CN108520224B - Display panel and display device - Google Patents

Abstract

Embodiments of the present invention disclose a display panel and a display device. The display panel includes: the array substrate includes a base substrate, a driving function layer and a light-emitting function layer, and the driving function layer is used to drive the light-emitting function layer to emit light; the fingerprint identification module includes at least one fingerprint identification unit; The main body is reflected to the fingerprint identification unit for fingerprint identification; at least one of the fingerprint identification module and the fingerprint identification light source is located on the side of the base substrate away from the driving function layer; the driving function layer includes a plurality of driving units arranged in an array, and a plurality of driving The unit includes at least one first driving unit, the first driving unit includes a light-transmitting area and a wiring area, the area of the first driving unit is S0, the area of the light-transmitting area is S, and the value range of S/S0=d, d is d≥10%; the vertical projection of the fingerprint identification unit on the array substrate at least partially overlaps with the light-transmitting area of a first driving unit. The solution of the embodiment of the present invention improves the fingerprint identification accuracy.

Description

A display panel and display device

technical field

Embodiments of the present invention relate to display technologies, and in particular, to a display panel and a display device.

Background technique

Because fingerprints are inherent to each person and are unique. With the development of technology, a variety of display devices with fingerprint recognition functions have appeared on the market, such as mobile phones, tablet computers, and smart wearable devices. In this way, before operating the display device with the fingerprint identification function, the user only needs to touch the fingerprint identification sensor of the display device with a finger to perform authorization verification, which simplifies the authorization verification process.

In the existing display device, the fingerprint recognition sensor is directly arranged in the display area of the display panel, and the fingerprint recognition sensor performs fingerprint recognition by receiving the reflected light of the fingerprint. problem.

SUMMARY OF THE INVENTION

The present invention provides a display panel and a display device to improve fingerprint identification accuracy.

In a first aspect, an embodiment of the present invention provides a display panel, the display panel includes:

an array substrate, the array substrate includes a base substrate, a driving function layer and a light-emitting function layer, and the driving function layer is used to drive the light-emitting function layer to emit light;

a fingerprint identification module, the fingerprint identification module includes at least one fingerprint identification unit; a fingerprint identification light source, the light emitted by the fingerprint identification light source is reflected to the fingerprint identification unit through the touch body to perform fingerprint identification;

At least one of the fingerprint identification module and the fingerprint identification light source is located on the side of the base substrate away from the driving function layer;

Wherein, the driving function layer includes a plurality of driving units arranged in an array, the plurality of driving units include at least one first driving unit, the first driving unit includes a light-transmitting area and a wiring area, the first driving unit The area of the driving unit is S0, the area of the light-transmitting area is S, S/S0=d, and the value range of d is d≥10%; the vertical projection of the fingerprint identification unit on the array substrate is related to a The light-transmitting regions of the first driving unit at least partially overlap.

In a second aspect, an embodiment of the present invention further provides a display device, where the display device includes the display panel described in any embodiment of the present invention.

In the embodiment of the present invention, the driving function layer includes at least one first driving unit, and the ratio of the area S of the light-transmitting area of the first driving unit to the area S0 of the first driving unit is greater than or equal to 10%; so that the first driving unit has A preferably set light-transmitting area increases the light intensity irradiated by the fingerprint identification light source to the finger and the light intensity of the fingerprint reflected light entering the fingerprint identification unit, thereby improving the fingerprint identification accuracy.

Description of drawings

1 is a cross-sectional view of a display panel according to an embodiment of the present invention;

2 is a schematic top view of a driving function layer provided by an embodiment of the present invention;

3 is a schematic top view of another display panel provided by an embodiment of the present invention;

4 is a schematic top view of another display panel provided by an embodiment of the present invention;

5 is a schematic top view of another display panel provided by an embodiment of the present invention;

6 is a schematic top view of another display panel provided by an embodiment of the present invention;

7 is a cross-sectional view of another display panel provided by an embodiment of the present invention;

8 is a cross-sectional view of another display panel provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a display device according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

FIG. 1 is a cross-sectional view of a display panel provided by an embodiment of the present invention, and FIG. 2 is a schematic top view of a driving function layer provided by an embodiment of the present invention. This embodiment provides a display panel, see FIG. 1 and FIG. 2 , the display panel includes:

The array substrate 10 includes a base substrate 11, a driving functional layer 12 and a light-emitting functional layer 13, and the driving functional layer 12 is used to drive the light-emitting functional layer 13 to emit light;

The fingerprint identification module 14, the fingerprint identification module 14 includes at least one fingerprint identification unit 141;

The fingerprint identification light source 15, the light emitted by the fingerprint identification light source 15 is reflected to the fingerprint identification unit through the touch body for fingerprint identification;

At least one of the fingerprint identification module 14 and the fingerprint identification light source 15 is located on the side of the base substrate 11 away from the driving function layer 12;

The driving functional layer 12 includes a plurality of driving units arranged in an array, the plurality of driving units include at least one first driving unit 121, the first driving unit 121 includes a light-transmitting area 1211 and a wiring area 1212, and the first driving unit 121 is S ₀ , the area of the light-transmitting region 1211 is S, S/S ₀ =d, and the value range of d is d≥10%; the vertical projection of the fingerprint recognition unit 141 on the array substrate 10 is related to a first driving unit The light-transmitting regions 1211 of 121 at least partially overlap.

It should be noted that the fingerprint identification unit 141 of the present application may be set in a one-to-one correspondence with the first driving unit 121, or only part of the first driving unit 121 may be set corresponding to the fingerprint identification unit 141, which is not limited in this application , depending on the situation.

The driving function layer 12 includes a plurality of signal lines 60 intersecting each other, such as scan lines, data lines, reference voltage lines and power lines, etc. The plurality of intersecting signal lines 60 define a plurality of driving units arranged in a matrix. The wiring area 1212 of the first driving unit 121 refers to a region where driving circuit devices are provided, for example, a region where signal wirings, vias, thin film transistors, capacitors, and the like are provided. The light-transmitting area 1211 refers to an area other than the wiring area 1212, and the light-transmitting area 1211 is a continuous area. It should be understood by those skilled in the art that the drawings in the present application only schematically show the distribution and positional relationship between the wiring area and the light-transmitting area. Specifically, the shapes of the wiring area and the light-transmitting area in the present application can be based on the actual panel. The layout needs to be designed, and the outline shape of the wiring area and the light-transmitting area is not specifically limited in this application.

Specifically, at least one of the fingerprint identification module 14 and the fingerprint identification light source 15 is located on the side of the base substrate 11 away from the driving function layer 12 , and when the fingerprint identification light source 15 is located at the side of the base substrate 11 away from the drive function layer 12 , The light emitted by the fingerprint recognition light source 15 needs to pass through the light-transmitting area of the driving functional layer 12 to irradiate the finger (touch body), and the light reflected by the finger enters the fingerprint recognition unit 141 to perform fingerprint recognition; when the fingerprint recognition unit 211 is located in the substrate substrate When the 11 is away from the side of the driving function layer 12, the light reflected by the finger needs to enter the fingerprint recognition unit 141 through the light-transmitting area of the driving function layer 12, so as to perform fingerprint recognition; when the fingerprint recognition unit 141 and the fingerprint recognition light source 15 are both located on the substrate When the substrate 11 is away from the side of the driving function layer 12 (refer to FIG. 1 ), the light emitted by the fingerprint recognition light source 15 needs to pass through the light-transmitting area of the driving function layer 12 to reach the finger, and the light reflected by the finger needs to pass through the driving function layer 12. Only the light-transmitting area can enter the fingerprint identification unit 141 for fingerprint identification. Therefore, the light transmission performance of each film layer of the display panel directly affects the light intensity that finally enters the fingerprint identification unit 141, thereby affecting the accuracy of fingerprint identification.

Table 1

d Display panel performance 2% Difference 6% Difference 10% good 20% excellent 30% excellent 40% excellent 50% good 60% middle 70% middle 80% middle 90% middle

In view of the above technical difficulties, the inventor has provided a feasible solution through in-depth research to improve the fingerprint recognition accuracy of the display panel integrated with the fingerprint touch technology. Specifically, please continue to refer to the first embodiment shown in FIG. 1 and FIG. 2 , by setting the driving function layer 12 to include at least one first driving unit 121 , and the area S of the light-transmitting region 1211 of the first driving unit 121 The ratio to the area S0 of the first driving unit 121 is greater than or equal to 10%; the light intensity irradiated to the finger by the fingerprint identification light source 15 and the light intensity of the fingerprint reflected light entering the fingerprint identification unit 141 are increased, thereby improving the fingerprint identification accuracy .

Specifically, please refer to Table 1, which shows the influence of the value range of d on the performance of the display panel. It can be seen that when the value of d ranges from 10% to 50%, the display panel has relatively good display performance. This arrangement ensures that the light-transmitting area 1211 has a larger area and improves the fingerprint recognition accuracy, and on the other hand, that the wiring area 1212 has a sufficient area to install the driving circuit devices, and ensures that the display panel has high display performance.

Optionally, the value range of d is 20%-40%. This arrangement further ensures that the light-transmitting area 1211 has a larger area, improves the fingerprint recognition accuracy, and that the wiring area has a sufficient area for arranging the driving circuit devices, so as to ensure that the display panel has high display performance. Among them, the display panel performance is the comprehensive performance index of fingerprint recognition performance and display performance.

It should be noted that when the fingerprint recognition module 14 is located on the side of the base substrate 11 away from the driving functional layer 12, the fingerprint recognition light source 15 may be an external light source, or may be the light-emitting functional layer 13, that is, the light-emitting functional layer 13 complex Used as a fingerprint identification light source 15. When the fingerprint identification module 14 is located on the side of the driving function layer 12 away from the base substrate 11 , the fingerprint identification light source 14 is an external light source located at the side of the base substrate 11 away from the drive function layer 12 . In addition, the light-emitting functional layer 13 of the existing display panel includes a reflective electrode, and the reflective electrode is made of opaque metal. However, the reflective electrode is smaller than the wiring area in the driving functional layer 12, and the reflective electrode is in the driving functional layer 12. The projection is usually located in the wiring area, so in this embodiment, the light-transmitting area of the driving functional layer 12 is equivalent to the light-transmitting area of the display panel. Multiple larger light-transmitting areas, thus improving the fingerprint recognition accuracy.

FIG. 3 is a schematic top view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 3 , the driving function layer 12 includes at least one first driving unit group 30 , and the first driving unit group 30 includes two first driving unit groups 30 . For a driving unit 121 , the light-transmitting regions 1211 of the two first driving units 121 are adjacent to each other. In this way, the driving function layer 12 has a better light-transmitting area setting, which further improves the fingerprint identification accuracy.

FIG. 4 is a schematic top view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 4 , the first driving unit 121 includes a plurality of sub-driving units 20 , and the light-transmitting area 1211 is located in one sub-driving unit 20 or at least one sub-driving unit 20 . Two adjacent sub-drive units 20 . Wherein, a plurality of intersecting signal lines 60 define a plurality of sub-driving units 20, and each first driving unit 121 may include a plurality of sub-driving units 20. Since each sub-driving unit 20 has a certain light-transmitting area, the The light-transmitting area is small. By moving the wiring areas of multiple sub-driving units 20, the relatively small light-transmitting areas can be combined into a continuous light-transmitting area 1211, so that the first driving unit 121 has a better light-transmitting area. By setting the fingerprint identification unit in the area corresponding to the light-transmitting area 1211, the fingerprint identification accuracy can be improved.

Optionally, referring to FIG. 4 , the first driving unit 121 includes a first sub-driving unit 21, a second sub-driving unit 22 and a third sub-driving unit 23 arranged along the first direction X; the first sub-driving unit 21, The shapes of the second sub-driving unit 22 and the third sub-driving unit 23 are approximately rectangular; in the first direction X, the dimensions of the first sub-driving unit 21 , the second sub-driving unit 22 and the third sub-driving unit 23 are X ₁ , X ₂ and X ₃ , in the second direction Y, the sizes of the first sub-driving unit 21 , the second sub-driving unit 22 and the third sub-driving unit 23 are Y ₁ , Y ₂ and Y ₃ in sequence, wherein , Y ₁ =Y ₂ =Y ₃ , the first direction X is perpendicular to the second direction Y.

Specifically, the light-transmitting area 1211 may be provided in any one of the first sub-driving unit 22 , the second sub-driving unit 22 and the third sub-driving unit 23 , or may be provided in any two sub-driving units.

It should be noted that this embodiment only exemplarily shows the case where the first direction is perpendicular to the second direction, and the shapes of the first sub-driving unit, the second sub-driving unit and the third sub-driving unit are approximately rectangular, which are not relevant to the present invention. In other embodiments, the first direction and the second direction may not be perpendicular, and the shapes of the first sub-driving unit, the second sub-driving unit and the third sub-driving unit may be other quadrilaterals or polygons.

Optionally, referring to FIG. 4 , the light-transmitting area 1211 is located in the first sub-driving unit 21 , and X ₁ >X ₂ =X ₃ .

Specifically, in the existing display panel, each sub-driving unit has a small light-transmitting area. In this embodiment, by compressing the second sub-driving unit 22 and the third sub-driving unit 23 in the first direction X, The wiring areas of one sub-driving unit 21 , the second sub-driving unit 22 and the third sub-driving unit 23 all move toward the third sub-driving unit 23 , so that the light-transmitting area 1211 of the entire first driving unit 121 is concentrated in the first sub-driving unit 23 . unit 21, so as to obtain a preferably set light-transmitting area 1211. By arranging the fingerprint identification unit in the light-transmitting area 1211, the fingerprint identification accuracy is improved.

FIG. 5 is a schematic top view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 5 , the light-transmitting area 1211 is located in the first sub-driving unit 21 and the second sub-driving unit 22 , X ₁ =X ₂ >X ₃ .

In this embodiment, the wiring area of the second sub-driving unit 22 and the wiring area of the third sub-driving unit 23 is moved by moving the wiring area of the first sub-driving unit 21 away from the second sub-driving unit 22 in the first direction X. They all move toward the third sub-driving unit 23 , so that the light-transmitting area 1211 of the entire first driving unit 121 is concentrated in the first sub-driving unit 21 and the second sub-driving unit 22 , so as to obtain a better-configured light-transmitting area 1211 . By arranging the fingerprint identification unit in the light-transmitting area 1211, the fingerprint identification accuracy is improved.

Optionally, referring to FIG. 5 , the display panel includes a touch area 40 and a non-touch area 50 , the first driving unit 121 is only located in the touch area 40 , the non-touch area 50 includes a second driving unit 122 , and the second driving unit 122 includes three fourth sub-driving units 24 arranged along the first direction X; in the first direction X, the size of the fourth sub-driving unit 24 is X ₄ , in the second direction Y, the fourth sub-driving unit 24 The dimensions of 24 are Y ₄ , 3X ₄ =X ₁ +X ₂ +X ₃ , Y ₄ =Y ₁ =Y ₂ =Y ₃ .

Specifically, by setting the total size of the first driving unit 121 and the second driving unit 122 along the first direction X and the total size along the second direction Y to be equal, the first sub-driving unit 121 can be set in a light transmittance with a better setting. On the premise of the area 1211, it is ensured that the touch area 40 and the non-touch area 50 can be provided with the same number of driving units per unit area, which ensures that the entire panel has a higher pixel density and thus higher image display quality.

Optionally, referring to FIG. 5 , the display panel includes a plurality of first metal lines 61 extending along the second direction Y; the line width of the first metal lines 61 corresponding to the first driving unit 121 is smaller than that of the A metal line 61 has a line width, and the first metal line 61 includes a data line and a power line.

Specifically, the line width of the first metal line 61, that is, the width of the first metal line 61 along the first direction X, is further increased by reducing the line width of the first metal line 60 corresponding to the first driving unit 121. The size of the light-transmitting area 1211 of the driving unit 121 along the first direction X further increases the area of the light-transmitting area 1211 and further improves the fingerprint recognition accuracy.

It should be noted that, FIG. 5 only exemplarily shows the position of the first metal line 61 , and does not show the line width of the first metal line 61 , which is not a limitation of the present invention.

6 is a schematic top view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 6 , the first driving unit 121 includes a fifth sub-driving unit 25 and a sixth sub-driving unit arranged along the third direction P In the unit 26 , the light-transmitting area 1211 is located in the fifth sub-driving unit 25 .

Specifically, this embodiment only exemplarily shows that the light-transmitting area 1211 is located in the fifth sub-driving unit 25 . In other embodiments, the light-transmitting area 1211 may also be located in the sixth sub-driving unit, or part of the first driving unit 121 . The light-transmitting area 1211 is located in the fifth sub-driving unit 25 , and another part of the light-transmitting area 1211 of the first driving unit 121 is located in the sixth sub-driving unit 26 , which is not limited in this embodiment.

Optionally, the shapes of the fifth sub-driving unit 25 and the sixth sub-driving unit 26 are approximately rectangular; in the third direction P, the sizes of the fifth sub-driving unit 25 and the sixth sub-driving unit 26 are Y ₅ and Y ₆ , in the fourth direction Q, the sizes of the fifth sub-driving unit 25 and the sixth sub-driving unit 26 are X ₅ and X ₆ in sequence, wherein Y ₅ >Y ₆ , X ₅ =X ₆ , the third direction P is perpendicular to the fourth direction Q.

In this embodiment, the sixth sub-driving unit 26 is compressed in the third direction P, that is, the wiring areas of the fifth sub-driving unit 25 and the sixth sub-driving unit 26 are both moved toward the sixth sub-driving unit 26, so that the entire first driving The light-transmitting regions 1211 of the unit 121 are concentrated in the fifth sub-driving unit 25 , so that the light-transmitting regions 1211 are preferably arranged. By arranging the fingerprint identification unit in the light-transmitting area 1211, the fingerprint identification accuracy is improved.

It should be noted that the third direction may be the same direction as the second direction, and the fourth direction may be the same direction as the first direction. This embodiment exemplarily shows the case where the third direction is perpendicular to the fourth direction, and the shapes of the fifth sub-driving unit and the sixth sub-driving unit are approximately rectangular, which is not a limitation of the present invention. In other embodiments, the third The direction and the fourth direction may not be perpendicular, and the shapes of the fifth sub-driving unit and the sixth sub-driving unit may be other quadrilaterals or polygons.

Optionally, referring to FIG. 6 , the display panel includes a touch area 40 and a non-touch area 50 , the first driving unit 121 is only located in the touch area 40 , and the non-touch area 50 includes a third driving unit 123 ; the third driving unit 123 includes two seventh sub-driving units 27 arranged along the third direction P, in which the size of the seventh sub-driving unit 27 is Y ₇ , and in the fourth direction Q, the seventh sub-driving unit 27 The dimensions are X ₇ , X ₅ =X ₆ =X ₇ , and 2Y ₇ =Y ₅ +Y ₆ .

Specifically, by setting the total size of the first driving unit 121 and the third driving unit 123 along the third direction P and the total size along the fourth direction Q to be the same, the first sub-driving unit 121 can be set in the optimal setting. Under the premise of the light-transmitting area, it is ensured that the touch area 40 and the non-touch area 50 can be provided with the same number of driving units in a unit area, which ensures that the entire panel has a high pixel density and thus has a high image display quality. .

Optionally, referring to FIG. 6 , the display panel includes a plurality of second metal lines 70 extending along the fourth direction Q; the line width of the second metal lines 70 corresponding to the first driving unit 121 is smaller than that of the The line widths of the second metal lines 70 include scan lines.

Specifically, by reducing the line width of the second metal line 70 corresponding to the first driving unit 121, the area of the light-transmitting region 1211 of the first driving unit 121 is further increased, and the fingerprint recognition accuracy is further improved. It should be noted that FIG. 6 only exemplarily shows the position of the second metal line 62 , and does not show the line width of the second metal line 62 , which is not a limitation of the present invention.

It should be noted that, in the design of the light-transmitting area of the present application, in addition to the above-mentioned ways of moving related driving elements, wiring layouts, and reducing line widths such as data lines and scan lines, the layout of the driving units can also be changed, and the driving unit layout can be changed. The shape design and the avoidance design of the driving function layer by reducing the size and spacing of all signal traces, driving components, vias, etc. Apply the required light transmission area settings. The specific can be determined according to the actual situation, which is not limited in this application.

7 is a cross-sectional view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 7 , the light-emitting functional layer 13 includes a red light-emitting functional layer 131, a green light-emitting functional layer 132 and a blue light-emitting functional layer 133, The light-transmitting area is disposed in the area where the red light-emitting functional layer 131 and/or the green light-emitting functional layer 132 are located.

Specifically, due to the low transmittance of blue light and high transmittance of red light and green light, the red light-emitting functional layer can be used by setting the light-transmitting area in the area where the red light-emitting functional layer 131 and the green light-emitting functional layer 132 are located. One or both of the 131 and the green light-emitting functional layer 132 are used as the fingerprint identification light source, which further increases the fingerprint reflected light received by the fingerprint identification unit 141, thereby further improving the fingerprint identification accuracy.

8 is a cross-sectional view of another display panel provided by an embodiment of the present invention. Optionally, referring to FIG. 8 , the fingerprint identification module 14 is disposed on the side of the driving function layer 12 away from the base substrate 11, and the fingerprint identification light source 15 It is an external light source, and is disposed on the side of the base substrate 11 away from the driving function layer 12 .

The fingerprint identification light source 15 can use a collimated light source. Compared with using a surface light source, the use of a collimated light source can reduce the crosstalk of fingerprint scattered light between different fingerprint identification units 141 and improve the accuracy of fingerprint identification.

Optionally, referring to FIG. 8 , the fingerprint identification module 14 includes a fingerprint identification panel 142 , and the fingerprint identification panel 142 is attached to the side of the driving function layer 12 away from the base substrate 11 .

The fingerprint identification panel 142 may be a transparent substrate, the fingerprint identification unit 141 is disposed on the fingerprint identification panel 142, and the fingerprint identification panel 142 is attached to the display panel, exemplarily, may be attached to the packaging cover of the display panel.

Optionally, referring to FIG. 1 , the fingerprint identification module 14 is disposed on the side of the base substrate 11 away from the driving function layer 12 , and the fingerprint identification light source 15 is located at the side of the driving function layer 12 away from the fingerprint identification module 14 ; The functional layer 13 is multiplexed as a fingerprint recognition light source.

Specifically, by arranging the fingerprint identification module 14 on the side of the base substrate 11 away from the driving function layer 12, it is ensured that the fingerprint identification module 14 will not block the light emitted by the light-emitting function layer 13, that is, the fingerprint identification module Group 14 does not affect the viewing angle of the display panel. In addition, if the light-emitting functional layer 13 provides a light source for the fingerprint identification unit 141 , no additional light source is required for the fingerprint identification unit 141 , which reduces the thickness of the display panel and conforms to the development trend of thinner and lighter display panels.

FIG. 9 is a schematic diagram of a display device according to an embodiment of the present invention. Referring to FIG. 9 , the display device 100 includes the display panel 200 according to any embodiment of the present invention. The display device 100 may be an electronic device such as a mobile phone or a tablet computer.

The display device provided in this embodiment includes at least one first driving unit by setting the driving function layer, and the ratio of the area S of the light-transmitting area of the first driving unit to the area S ₀ of the first driving unit is greater than or equal to 10%; A driving unit has a better light-transmitting area, which increases the light intensity irradiated by the fingerprint recognition light source to the finger and the light intensity of the fingerprint reflected light entering the fingerprint recognition unit, thereby improving the fingerprint recognition accuracy.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (18)

1. A display panel, comprising:

the array substrate comprises a substrate, a driving functional layer and a light-emitting functional layer, wherein the driving functional layer is used for driving the light-emitting functional layer to emit light;

the fingerprint identification module comprises at least one fingerprint identification unit;

the fingerprint identification light source reflects light rays emitted by the fingerprint identification light source to the fingerprint identification unit through the touch main body so as to perform fingerprint identification;

at least one of the fingerprint identification module and the fingerprint identification light source is positioned on one side of the substrate far away from the driving function layer;

the driving function layer comprises a plurality of driving units arranged in an array, the driving units comprise at least one first driving unit, the first driving unit comprises a light transmitting area and a wiring area, and the area of the first driving unit is S₀The area of the light-transmitting area is S, S/S₀D is equal to or more than 10 percent; the vertical projection of the fingerprint identification unit on the array substrate is at least partially overlapped with a light-transmitting area of the first driving unit; the first driving unit comprises a plurality of sub-driving units, and the light-transmitting area is positioned in one sub-driving unit or at least two adjacent sub-driving units.

2. The display panel according to claim 1, characterized in that:

the value range of d is 10-50%.

3. The display panel according to claim 2, characterized in that:

the value range of d is 20-40%.

4. The display panel according to claim 1, characterized in that:

the driving function layer comprises at least one first driving unit group, the first driving unit group comprises two first driving units, and the light transmitting areas of the two first driving units are adjacent.

5. The display panel according to claim 1, characterized in that:

the first driving unit comprises a first sub-driving unit, a second sub-driving unit and a third sub-driving unit which are arranged along a first direction; the first sub-driving unit, the second sub-driving unit and the third sub-driving unit are approximately rectangular in shape;

in the first direction, the sizes of the first sub-driving unit, the second sub-driving unit and the third sub-driving unit are X in sequence₁、X₂And X₃，

In a second direction, the first sub-driving unit, the second sub-driving unit and the third sub-driving unit have a size of Y₁、Y₂And Y₃，

Wherein, Y₁＝Y₂＝Y₃The first direction is perpendicular to the second direction.

6. The display panel according to claim 5, wherein:

the light-transmitting region is located in the first sub-driving unit, X₁>X₂＝X₃。

7. The display panel according to claim 5, wherein:

the light-transmitting region is located in the first sub-driving unit and the second sub-driving unit, X₁＝X₂＞X₃。

8. The display panel according to claim 5, wherein:

the display panel comprises a touch area and a non-touch area, the first driving unit is only located in the touch area, the non-touch area comprises a second driving unit, and the second driving unit comprises three fourth sub-driving units arranged along a first direction;

the fourth sub driving unit has a size of X in the first direction₄In the second direction, the fourth sub-driving unit has a size of Y₄，

3X₄＝X₁+X₂+X₃，Y₄＝Y₁＝Y₂＝Y₃。

9. The display panel according to claim 8, wherein:

the display panel comprises a plurality of first metal wires extending along the second direction; the line width of the first metal line corresponding to the first driving unit is smaller than the line width of the first metal line corresponding to the second driving unit,

the first metal line includes a data line and a power line.

10. The display panel according to claim 1, characterized in that:

the first driving unit comprises a fifth sub-driving unit and a sixth sub-driving unit which are arranged along a third direction, and the light-transmitting area is located in the fifth sub-driving unit.

11. The display panel according to claim 10, wherein:

the fifth sub-driving unit and the sixth sub-driving unit are approximately rectangular in shape;

in the third direction, the sizes of the fifth sub-driving unit and the sixth sub-driving unit are Y in sequence₅And Y₆，

In the fourth direction, the sizes of the fifth sub-driving unit and the sixth sub-driving unit are X in sequence₅And X₆，

Wherein, Y₅>Y₆，X₅＝X₆The third direction is perpendicular to the fourth direction.

12. The display panel according to claim 11, wherein:

the display panel comprises a touch area and a non-touch area, the first driving unit is only positioned in the touch area, and the non-touch area comprises a third driving unit;

the third driving unit comprises two seventh sub-driving units arranged along a third direction, and the size of the seventh sub-driving unit is Y in the third direction₇In the fourth direction, the seventh sub driving unit has a size of X₇，

X₅＝X₆＝X₇，2Y₇＝Y₅+Y₆。

13. The display panel according to claim 12, wherein:

the display panel comprises a plurality of second metal wires extending along a fourth direction; the line width of the second metal line corresponding to the first driving unit is smaller than the line width of the second metal line corresponding to the third driving unit,

the second metal line includes a scan line.

14. The display panel according to claim 1, characterized in that:

the light-emitting functional layer comprises a red light-emitting functional layer, a green light-emitting functional layer and a blue light-emitting functional layer, and the light-transmitting area is arranged in an area where the red light-emitting functional layer and/or the green light-emitting functional layer are/is located.

15. The display panel according to claim 1, characterized in that:

the fingerprint identification module is arranged on one side of the driving function layer far away from the substrate base plate,

the fingerprint identification light source is an externally hung light source and is arranged on one side, far away from the driving function layer, of the substrate base plate.

16. The display panel according to claim 15, wherein:

the fingerprint identification module contains the fingerprint identification panel, the fingerprint identification panel laminate in the drive functional layer is kept away from one side of substrate base plate.

17. The display panel according to claim 1, characterized in that:

the fingerprint identification module is arranged on one side of the substrate far away from the driving function layer,

the fingerprint identification light source is positioned on one side of the driving function layer, which is far away from the fingerprint identification module; or, the light-emitting functional layer is multiplexed as the fingerprint identification light source.

18. A display device characterized by comprising the display panel according to any one of claims 1 to 17.

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