KR20190015095A - Low power driving system and timing controller for display apparatus - Google Patents

Abstract

According to the present invention, disclosed are a low power driving system and a timing controller of a display apparatus. The low power driving system of a display apparatus capable of reducing the power consumption of a source driver comprises: a timing controller transmitting a packet to which at least one of first option information corresponding to a static pattern and second option information corresponding to a dynamic pattern is applied; and a source driver receiving the packet and performing a low power mode corresponding to the static pattern according to the first option information or performing adaptive charge sharing corresponding to the dynamic pattern according to the second option information.

Description

[0001] LOW POWER DRIVING SYSTEM AND TIMING CONTROLLER FOR DISPLAY APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a low power driving technique, and more particularly, to a low power driving system and a timing controller of a display device.

The display device includes a timing controller, a source driver, and a display panel, and the timing controller can be designed to provide the source driver with display data, control data, and clock for display in packets, and the source driver receives the display data A source signal corresponding to the display data is provided to the display panel, and the display panel displays a screen corresponding to the source signal.

The above-described display device is required to employ a technique for reducing power consumption in various elements, and adoption of a technique for reducing power consumption at a timing controller and a source driver level has been actively studied.

The present invention provides a low power driving system, method and timing controller for a display device capable of reducing power consumption of a source driver by recognizing a display pattern in a timing controller and transmitting option information that recognizes a display pattern to a source driver .

In addition, the present invention provides a packet including option information capable of reducing power consumption corresponding to a display pattern, performs charge sharing control on output according to option information, or controls output buffer, gamma buffer, and intermediate drive voltage HVDD) buffers to reduce power consumption by controlling the currents of at least one of the first, second, third, fourth, and fifth HVDD buffers.

According to an aspect of the present invention, there is provided a low-power driving system for a display device, the display device including: a display device for dividing a display pattern into a static pattern and a dynamic pattern based on a difference between previous line data and current line data, A timing controller for transmitting a packet to which one of the option information and the second option information corresponding to the dynamic pattern is applied; And a controller for receiving the packet and performing a low power mode corresponding to the static pattern according to the first option information or a source for performing adaptive charge sharing corresponding to the dynamic pattern according to the second option information. And a driver.

The timing controller of the display apparatus of the present invention includes: a pixel value storage unit for storing previous line data and current line data, respectively, for mapping; Wherein the calculation of the power gain amount and the power loss due to the charge sharing for the current line data or the calculation of the output of the source driver applying charge sharing to the current line data, A first maximum change amount and a second maximum change amount of the source driver output in which charge sharing is not added to the current line data; And if the display pattern is a dynamic pattern, second option information on whether charge sharing is applied to the current line data is provided with reference to whether charge-sharing is applied to the previous line data or a comparison result between the power gain amount and the power loss amount And if the display pattern is a static pattern, providing the selected one as the first option information in accordance with the charge sharing of the previous line data among the first maximum change amount and the second maximum change amount when the display pattern is a static pattern .

The present invention has the effect of reducing the power consumption of the source driver by recognizing the display pattern in the timing controller and transmitting the option information that recognizes the display pattern to the source driver.

Further, the present invention performs consumption sharing by performing control of charge sharing with respect to the output of the source driver or current control with respect to at least one of the output buffer, the gamma buffer, and the intermediate drive voltage (HVDD) buffer according to the option information corresponding to the display pattern There is an effect that power can be reduced.

1 is a block diagram illustrating a low power drive system of a display device of the present invention.
2 is a flow chart illustrating a low power driving method according to the embodiment of FIG.
3 is a block diagram of the timing controller of Fig.
4 is a flow chart illustrating an adaptive charge sharing control operation;
Figures 5 and 6 illustrate exemplary panel structures.
FIG. 7 is a block diagram for explaining a unique charge sharing connection applied to the present invention; FIG.
FIGS. 8 and 9 are waveform diagrams for explaining power saving and power consumption according to charge sharing; FIG.
10 is a flow chart illustrating a low power mode control operation;
11 is a waveform diagram for explaining a low power mode control operation according to an output level of a source driver;
12 is a graph illustrating an output change slope of a source driver according to time corresponding to option information;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the terminology used herein is for the purpose of description and should not be interpreted as limiting the scope of the present invention.

The embodiments described in the present specification and the configurations shown in the drawings are preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention and thus various equivalents and modifications Can be.

The low power driving system of the display device of the present invention can be illustrated as in Fig.

Referring to FIG. 1, a timing controller 10, a source driver 20, and a display panel 30 are illustrated.

The timing controller 10 is configured to configure externally received display data into a packet (PKT) and provide the packet (PKT) to the source driver 20. [

Here, the timing controller 10 may configure a packet (PKT) including display data and control data, and the control data may include various option information for distinguishing the power control mode.

The power control mode can be classified into a low power mode control operation and an adaptive charge sharing control operation. The option information represents low power mode control or adaptive charge sharing control, has a value according to a predetermined protocol, and can be applied to the packet (PKT) by being included in the control data.

The source driver 20 receives the packet PKT transmitted from the timing controller 10 and outputs the source signal Sout corresponding to the display data to the display panel 30. [ Here, the source driver 20 may be configured to perform a power control mode corresponding to the option information of the control data in the process of converting the display data into the source signal Sout and outputting the source signal Sout .

The source driver 20 may include a latch, a shift register, a digital-to-analog converter, and an output buffer for conversion of display data. The source driver 20 may include a gamma buffer for providing a gamma voltage to the digital-to-analog converter, and an intermediate drive voltage (HVDD) buffer for providing a drive voltage to the output buffer.

The latches, shift registers, digital-to-analog converters, output buffers, gamma buffers, and intermediate drive voltage buffers described above are components that are commonly used in the source driver 20, so detailed illustration and description thereof will be omitted.

The display panel 30 may be a flat panel display panel and may include, for example, an organic light emitting diode (OLED), a light emitting diode (LED), or a liquid crystal display have.

1, the low power driving system of the display device of the present invention is embodied to include the timing controller 10 and the source driver 20. [

The operation of the low power driving system of the display device will be described with reference to FIG.

First, the timing controller 10 divides the display pattern into a static pattern and a dynamic pattern based on the difference between the previous line data and the current line data, and outputs the first option information corresponding to the static pattern And transmits a packet (PKT) to which one of the second option information corresponding to the dynamic pattern is applied.

The timing controller 10 performs a control process, and the control process includes performing a pattern recognition and providing a packet (PKT) including control data having first option information or second option information according to pattern recognition (S10).

The source driver 20 can receive the packet PKT and recognize the power control mode by the first option information or the second option information. More specifically, the source driver 20 performs a low power mode operation corresponding to the static pattern according to the first option information or performs an adaptive charge sharing operation corresponding to the dynamic pattern according to the second option information .

That is, the source driver 20 performs the driving process according to the power control mode recognition, and the driving process recognizes the power control mode according to the display pattern (S20). If the display pattern is a static pattern, (Step S22), and performing adaptive charge sharing when the display pattern is a dynamic pattern (step S23).

The display pattern can be determined as either a static pattern or a dynamic pattern by comparing the previous line data with the current line data.

The criterion for distinguishing between the static pattern and the dynamic pattern may be set as a data variation amount between the previous line data and the current line data, and the criterion of the data variation amount for distinguishing between the static pattern and the dynamic pattern may vary Can be set.

Among them, the static pattern may be defined as a case where the source data Sout, which is the output of the source driver 20, is kept constant because the amount of data change between the previous line data and the current line data is small.

The dynamic pattern can be defined as a case where the source signals Sout, which is the output of the source driver 20, swings due to a large amount of data change between the previous line data and the current line data.

The embodiment of the present invention provides first option information for the timing controller 10 to determine that the power control mode is a low power mode control operation when the display pattern is a static pattern, Power mode in which power consumption is reduced by reducing the amount of current that maintains output to the current line data.

The embodiment of the present invention also provides second option information for the timing controller 10 to determine that the power control mode is an adaptive charge sharing control operation when the display pattern is a dynamic pattern, And perform adaptive charge sharing in which power consumption is reduced by providing a current required to be charged by the load capacitor of the display panel by carrying out charge sharing with respect to the output of the current line data corresponding to the option information.

The timing controller 10 provides a packet (PKT) containing the first option information or the second option information in the control data to reduce the power consumption of the source driver 20. For this purpose, . The second option information may be determined and provided by the adaptive charge sharing control operation of FIG. 4, and the first option information may be determined and provided by the low power mode control operation of FIG. The adaptive charge sharing control operation of FIG. 4 and the low power mode control operation of FIG. 10 provide a packet (PKT) containing control data having first option information or second option information according to the pattern recognition and pattern recognition of FIG. 2 It can be understood that it is included in step S10.

3, the timing controller 10 includes a data receiving unit 11, a packet configuring unit 12, a packet output unit 13, and an option information configuring unit 15.

Here, the data receiving unit 11 transmits externally received display data to the packet configuring unit 12, and the packet configuring unit 12 converts display data, control data, and clock for configuring the packet PKT into parallel And supplies the data to the packet output unit 13. The packet output unit 13 converts the parallel data into serial data according to a predetermined protocol and transmits the serial data as the packet PKT to the source driver 20. [

In the above configuration, the packet configuration unit 12 receives the first option information or the second option information provided by the option information configuration unit 15 and operates so that the first option information or the second option information is included in the control data .

The option information construction unit 15 is configured to provide the first option information or the second option information as a result of comparing the previous line data and the current line data. For this purpose, the option information construction unit 15 includes a pixel value storage unit 16, a calculation unit 17, And an option information providing unit 18.

The pixel value storage unit 16 may comprise a memory for storing display data transmitted from the data receiving unit 11 to the packet forming unit 12 on a line-by-line basis. The pixel value storage unit 16 is preferably configured to have at least a capacity capable of storing and providing at least the previous line data and the current line data, respectively, for mapping. The pixel value storage unit 16 stores the display data on a line basis and provides the stored previous line data and the current line data for mapping in synchronization with the control and operation of the option information providing unit 18 Lt; / RTI >

The arithmetic unit 17 receives the previous line data and the current line data of the pixel value storage unit 16 and maps them, thereby calculating a data change amount between the previous line data and the current line data, and judging the display pattern with reference to the data change amount An operation for calculating the power gain amount Ps and the power loss amount Pw due to the charge sharing of the current line data, an operation for comparing the power gain amount Ps and the power loss amount Pw, An operation of detecting the maximum amount of change (Lpeak_cs, Lpeak_ncs) of each source driver output in the case of applying or not applying the sharing can be performed. The operation unit 17 can perform a selected operation among the operations according to the display pattern and provides the operation result to the option information providing unit 18.

The option information providing unit 18 can control the operation unit 17 to select an operation to be performed in accordance with the display pattern, receive the operation result to determine option information corresponding to the display pattern, And supplies it to the configuration unit 12. [

That is, the above-described option information configuration unit 15 determines the second option information obtained by performing the adaptive charge sharing control operation of FIG. 4 or the first option information obtained by performing the low power mode control operation of FIG. 10, The first option information or the second option information may be provided to the packet configuring unit 12. [

The adaptive charge sharing operation of FIG. 4 is performed when the display pattern corresponds to a dynamic pattern.

The adaptive charge sharing operation is briefly summarized. The previous line data and the current line data are mapped and compared. The power gain amount Ps and the power loss amount Pw due to the charge sharing for the current line data are respectively calculated, It is determined whether charge sharing is applied to the current line data by referring to the comparison result of the amount Ps and the power loss amount Pw and whether charge sharing is applied to the previous line data.

That is, the second option information according to the adaptive charge sharing control process can be understood as information indicating whether charge sharing is performed on the source signal corresponding to the current line data.

The low power mode control operation of FIG. 10 is performed when the display pattern corresponds to a static pattern.

In summary, the low-power mode control operation is performed such that the previous line data and the current line data are mapped and compared, the first maximum change amount of the output of the source driver 20 applying the charge sharing for the current line data is detected, The change amount is selected as the first option level. In addition, the previous line data and the current line data are mapped and compared, and the second maximum change amount of the output of the source driver 20 which has not applied the charge sharing for the current line data is detected, and the second maximum change amount is detected as the second option level .

Thereafter, either the first option level or the second option level is selected as the first option information to be applied to the packet depending on whether charge sharing is applied to the previous line data.

In the above, the adaptive charge sharing control operation will be described in detail with reference to FIG.

First, when the display pattern is a dynamic pattern, the timing controller 10 stores the previous line data (N-1 Line) and the current line data (N line) in the pixel value storage section 16 to determine whether charge- (S30), and the arithmetic unit 17 maps the previous line data (N-1 Line) and the current line data (N line) (S32).

On the other hand, the display panel 30 is composed of pixels in different formats depending on the type. Illustratively, FIG. 5 illustrates the arrangement of the pixels of the display panel 30 in the case of the normal type, and FIG. 6 illustrates the arrangement of the pixels of the display panel 30 in the case of the Z-inversion type. 5 and 6, the Rx series pixel is a red pixel, the Bx series pixel is a blue pixel, the Gx series pixel is a green pixel, and the Du pixel is a dummy pixel.

The timing controller 10 arranges display data differently depending on the arrangement of red pixels, blue pixels, and green pixels on a line-by-line basis according to the type of the display panel 30 to form a packet PKT.

Therefore, the timing controller 10 calls information for confirming the specification of the display panel 30 for comparison between the previous line data (N-1 Line) and the current line data (N line) (N-1 Line) and the current line data (N Line) in accordance with the specification of FIG.

Thereafter, the timing controller 10 compares the previous line data with the current line data in the operation unit 17, and calculates the power gain amount Ps and the power loss amount Pw due to the charge sharing with respect to the current line data ( S34). The above-described power gain amount Ps and the power loss amount Pw can be calculated by a calculation formula preset in the timing controller 10. [

The source driver 20 of the present invention can be configured to perform charge sharing for all channels by a unique charge sharing connection as shown in FIG. The source driver 20 has a plurality of channels for outputting the source signal Sout. Unique charge sharing refers to grouping all the channels into a certain number of units and performing charge sharing on a group basis. 7, the switching between the channels for charge sharing can be implemented using a plurality of MOS transistors, and the configuration of the plurality of MOS transistors can be variously performed according to the intention of the manufacturer, so a detailed description thereof will be omitted.

FIG. 7 illustrates that six channels (CH1 to CH6) are grouped into a unique structure. In this case, among the six channels CH1 to CH6, the charge sharing connection is configured between the high output buffers VH and the charge sharing connection can be configured between the low output buffers VL. In the above-described unique structure, the charge sharing voltage may be determined as a level to which an average of connected channels is applied.

Referring to FIGS. 8 and 9, each channel is driven to be polarity-converted based on the intermediate drive voltage HVDD, and carries out charge sharing in the middle of driving in a line unit.

The high output buffer VH can drive the output in the range of the intermediate drive voltage HVDD and the drive voltage VDD and the low output buffer VL can drive the output in the range of the ground voltage VSS and the intermediate drive voltage HVDD To drive the output. At this time, the intermediate driving voltage HVDD may be set to a voltage of a level corresponding to 1/2 of the driving voltage VDD and the ground voltage VSS. The charge sharing voltage V _{CS_VH} for the high output buffer VH can be set to have a level between the intermediate drive voltage HVDD and the drive voltage VDD, The sharing voltage V _{CS_VL} may be set to have a level between the intermediate drive voltage HVDD and the ground voltage VSS.

Each channel can be repeatedly driven and charge-shared corresponding to pixel data that is changed in a line unit.

In the process of repeating the driving and the charge sharing, power saving and power consumption can be performed according to the change of the voltage of the channels.

From the viewpoint of power consumption, it can be understood that the decrease in the voltage level corresponds to the case where the display panel, that is, the load capacitor is discharged, so that there is no power consumption.

However, when the voltage level rises to the charge sharing level (V _{CS_VH} , V _{CS_VL} ), it can be understood that the power saving is performed because it corresponds to the case of charging using the discharging current. That is, in this case, the power saving can be used for calculating the power gain amount Ps due to the charge sharing.

It can also be understood that power consumption occurs when the voltage level rises as in the case where the voltage level rises at the charge sharing levels V _{CS_VH} and V _{CS_VL} . In this case, the power consumption can be used for calculating the power loss amount Pw due to charge sharing.

The timing controller 10 compares the previous line data and the current line data with respect to all the channels that are uniquely charge-shared connected in the arithmetic unit 17 and compares the power gain amount Ps due to charge sharing with the current line data and the power loss amount Pw (Step S34).

When the power gain amount Ps and the power loss amount Pw are respectively calculated, the option information providing unit 18 of the timing controller 10 confirms whether charge sharing is applied to the previous line data (S36) (Step S38). If the power gain amount Ps is greater than the power loss amount Pw,

Illustratively, step S38 of ascertaining whether the power gain amount Ps is greater than the power loss amount Pw may be configured to determine whether the power gain amount Ps is greater than or equal to the power loss amount Pw and a preset offset level .

If the charge sharing is not applied to the previous line data or the power gain amount Ps is smaller than the power loss amount Pw, the option information providing unit 18 of the timing controller 10 performs charge sharing on the current line data (OFF) (S42), defines second option information corresponding thereto, and provides the second option information to the packet configuring unit 12. The packet configuration unit 12 determines whether to apply the charge sharing OFF (OFF). Accordingly, the packet configuring unit 12 constructs a packet (PKT) to which the second option information is applied to express that the charge sharing is not applied to the current line data (S44).

Alternatively, when charge sharing is applied to the previous line and the power gain amount Ps is greater than the power loss amount Pw, the option information providing unit 18 of the timing controller 10 applies charge sharing to the current line data (S40), defines the second option information corresponding to the selected option information, and provides the second option information to the packet configuring unit 12. [ Accordingly, the packet configuring unit 12 constructs a packet PKT to which the second option information representing the application of charge sharing to the current line data is applied (S44).

As described above, when the display pattern is a dynamic pattern, the timing controller 10 determines whether or not to apply charge sharing to the source signal corresponding to the current line data through the adaptive charge- And provides the source driver 20 with a packet PKT to which the second option information is applied.

The source driver 20 performs adaptive charge sharing on the source signal in order to reduce power consumption corresponding to the second option information defined as charge sharing, and in response to the second option information defined as not charge- And outputs the source signal normally without carrying out charge sharing.

On the other hand, the low power mode control operation will be described in detail with reference to FIG.

The timing controller 10 may perform the low power mode control operation as shown in FIG. 10 to reduce the power consumption by controlling the amount of current for the output of the source driver 20 when the display pattern is a static pattern.

First, when the display pattern is a static pattern, the timing controller 10 performs a low power mode control process for determining the first option information corresponding to the maximum change amount by confirming the change amount of the output of the source driver 20 with respect to the current line data do.

Referring to FIG. 11, the first option information is represented by PWRC and can be changed as "HHH", "LHH", "LLL".

The first option information can be determined so as to control the amount of current in such a range that the output of the source driver 20 can be maintained in correspondence with the line data of the static pattern.

As shown in FIG. 12, the first option information may be determined to be included in a range that satisfies the necessary time and minimum level of screen driving, and may be set in units of line data so that the amount of current is reduced. That is, the first option information may be determined corresponding to the current line data so as to reduce the amount of current in a range that maintains the output voltage corresponding to the previous line data.

To this end, the timing controller 10 compares the previous line data stored in the pixel value storage section 16 with the current line data in the arithmetic operation section 17.

The operation unit 17 of the timing controller 10 compares the previous line data with the current line data and detects the first maximum change amount Lpeak_cs of the output of the source driver 20 to which charge sharing is applied for the current line data as an absolute value And compares the previous line data with the current line data to detect the second maximum change amount Lpeak_ncs of the output of the source driver 20 that has not been subjected to charge sharing with respect to the current line data as an absolute value (S74). At this time, the first maximum change amount Lpeak_cs and the second maximum change amount Lpeak_ncs may be stored as the largest value among all channels that are unique charge-sharing connected.

The operation unit 17 of the timing controller 10 selects the first maximum change amount Lpeak_cs and the second maximum change amount Lpeak_ncs detected as described above as the first option level and the second option level, And control options PWRCcs and PWRCncs corresponding to the second option level are determined (S76).

Thereafter, the option information provider 18 of the timing controller 10 checks whether charge sharing is applied to the previous line data (S78).

The option information provider 18 of the timing controller 10 selects the control option PWRCcs as the first option information PWRC in step S80 and provides the control option PWRCcs to the packet configuring part 12 if charge sharing is applied to the previous line , The packet PKT may be configured by applying the first option information PWRC described above (S84). Alternatively, if the charge sharing is not applied to the previous line, the option information providing unit 18 of the timing controller 10 selects the control option PWRCncs as the first option information PWRC (S82) 12, and the packet PKT may be configured by applying the first option information PWRC described above (S84).

The timing controller 10 performs control for reducing power consumption by controlling the amount of current for the output of the source driver 20 when the display pattern is a static pattern by the low power mode control operation.

The timing controller 10 can perform the adaptive charge sharing control operation of FIG. 3 and the low power mode control operation of FIG. 9 on a line-by-line basis and reduce the power consumption of the source driver 20. FIG.

Meanwhile, the timing controller 10 may perform the low power mode control process described above in consideration of the output buffer, the gamma buffer, and the intermediate driving voltage buffer, and may separately control the output buffer, the gamma buffer, Option information can be generated and applied to the packet (PKT).

Accordingly, the source driver 20 can be controlled to reduce the overall current consumption by controlling the output buffer, the gamma buffer, and the intermediate drive voltage buffer corresponding to each option information.

According to the above-described configuration and operation, the present invention recognizes the display pattern in the timing controller 10 and transmits the option information corresponding to the recognition of the display pattern to the source driver 20, thereby reducing the power consumption of the source driver 20 .

The present invention also provides a method of controlling charge sharing for an output of a source driver 20 according to option information corresponding to a display pattern or for controlling current sharing of at least one of an output buffer, a gamma buffer, and an intermediate drive voltage (HVDD) The power consumption can be reduced.

Claims (16)

A method for dividing a display pattern into a static pattern and a dynamic pattern based on a difference between previous line data and current line data and generating a first packet by applying one of the first option information corresponding to the static pattern and the second option information corresponding to the dynamic pattern A timing controller for transmitting the signal; And
A source driver for receiving the packet, performing a low power mode corresponding to the static pattern according to the first option information, or performing adaptive charge sharing corresponding to the dynamic pattern according to the second option information, And a low-power driving system for a display device. The method according to claim 1,
Wherein the timing controller provides the second option information on whether charge sharing is applied to the current line data to the source driver through the packet in response to a result of comparing the previous line data and the current line data, A low power drive system of a display device for controlling the adaptive charge sharing of a driver. 3. The apparatus according to claim 2,
Calculates a power gain amount and a power loss amount due to charge sharing for the current line data with respect to a result of comparing the previous line data and the current line data,
A low power operation system of the display device for providing the second option information on whether charge sharing is applied to the current line data with reference to whether charge sharing is applied to the previous line data and a comparison result between the power gain amount and the power loss amount, . 4. The timing controller according to claim 3,
Providing the second option information for charge sharing off for the current line data when charge sharing is not applied to the previous line data or when the power gain amount is less than the power loss amount,
And provides the second option information for charge sharing ON for the current line data when charge sharing is applied to the previous line data and the power gain amount is greater than the power loss amount. 4. The timing controller according to claim 3,
The power consumption amount and the power loss amount due to charge sharing for the current line data by comparing the previous line data and the current line data with respect to all channels connected to unique charge sharing of the source driver, Drive system. 4. The apparatus of claim 3,
And the timing controller performs the adaptive charge sharing to selectively perform charge sharing of the source signal with respect to the current line data in accordance with the second option information. The apparatus according to claim 1,
A first maximum change amount of an output of the source driver to which charge sharing is applied to the current line data and a second maximum change amount of an output of the source driver that does not apply charge sharing to the current line data in response to a result of comparing the previous line data and the current line data, The second maximum change amount of the output is obtained,
And provides the selected one as the first option information according to the charge sharing of the previous line data among the first maximum change amount and the second maximum change amount. 8. The timing controller according to claim 7,
When charge sharing is applied to the previous line data, providing the first maximum change amount as the first option information,
And provides the second maximum change amount as the second option information when charge sharing is not applied to the previous line data. 8. The method of claim 7,
Wherein the timing controller stores a largest one of all channels connected uniquely by charge-sharing as the first maximum change amount and the second maximum change amount. 8. The apparatus of claim 7,
A low power mode of the display device performing the low power mode in which the amount of current for holding the output of the current line data is reduced based on one of the first maximum change amount and the second maximum change amount provided as the first option information system. The method according to claim 1,
Wherein the timing controller provides the first option information to include information identifying an output buffer, a gamma buffer, and an intermediate drive voltage buffer,
Wherein the source driver performs the low power mode for the one selected by the first option information among the output buffer, the gamma buffer, and the intermediate drive voltage buffer. A pixel value storage unit for storing the previous line data and the current line data, respectively, for providing for mapping;
Wherein the calculation of the power gain amount and the power loss due to the charge sharing for the current line data or the calculation of the output of the source driver applying charge sharing to the current line data, A first maximum change amount and a second maximum change amount of the source driver output in which charge sharing is not added to the current line data; And
If the display pattern is a dynamic pattern, second option information on whether charge sharing is applied to the current line data is provided with reference to whether charge sharing is applied to the previous line data or a comparison result between the power gain amount and the power loss amount And providing the selected one as the first option information according to the charge sharing of the previous line data among the first maximum change amount and the second maximum change amount when the display pattern is a static pattern The timing controller of the display device. 13. The method of claim 12,
Further comprising a packet forming unit that forms a packet including display data and control data,
Wherein the packer comprises a first selector for adaptive charge sharing to select charge sharing for the current line data or the first option information for a low power mode to reduce the amount of current holding the output of the source driver for the current line data. 2 option information to the control data. 13. The image processing apparatus according to claim 12,
A second calculation for calculating a power gain amount and a power loss amount due to charge sharing of the current line data, a second calculation for calculating a data change amount between the previous line data and the current line data, The first maximum change amount of the source driver output for the third operation and the charge sharing application of the current line data and the second maximum change amount of the source driver output for the case where charge sharing is not performed for the current line data The fourth operation is selectively performed,
Sequentially executing the first calculation, the second calculation and the third calculation corresponding to the dynamic pattern,
And sequentially performs the first operation and the fourth operation corresponding to the static pattern. 13. The apparatus according to claim 12,
When the display pattern is a dynamic pattern,
Providing the second option information for charge sharing off for the current line data when charge sharing is not applied to the previous line data or when the power gain amount is less than the power loss amount,
And provides the second option information for charge sharing on (ON) the current line data when charge sharing is applied to the previous line data and the power gain amount is greater than the power loss amount. 13. The apparatus according to claim 12,
When charge sharing is applied to the previous line data, providing the first maximum change amount as the first option information,
And provides the second maximum change amount as the second option information when charge sharing is not applied to the previous line data.

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