+

WO2009021358A1 - Procédé de commande d'afficheur électrophorétique à initiative - Google Patents

Procédé de commande d'afficheur électrophorétique à initiative Download PDF

Info

Publication number
WO2009021358A1
WO2009021358A1 PCT/CN2007/002433 CN2007002433W WO2009021358A1 WO 2009021358 A1 WO2009021358 A1 WO 2009021358A1 CN 2007002433 W CN2007002433 W CN 2007002433W WO 2009021358 A1 WO2009021358 A1 WO 2009021358A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrophoretic display
driving
gray
pixels
driving method
Prior art date
Application number
PCT/CN2007/002433
Other languages
English (en)
Chinese (zh)
Inventor
Chunyu Chen
Hsinchung Chen
Yaoching Huang
Original Assignee
Prime View International Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prime View International Co., Ltd. filed Critical Prime View International Co., Ltd.
Priority to PCT/CN2007/002433 priority Critical patent/WO2009021358A1/fr
Publication of WO2009021358A1 publication Critical patent/WO2009021358A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices

Definitions

  • the present invention relates to an active electrophoretic display driving method, and more particularly to a technique for reducing the reaction time of an update screen of an electrophoretic display, thereby accelerating the screen display speed of the electrophoretic display.
  • electrophoretic display unlike our common general fiber paper, is a "conductive" "polymer” material containing many "microspheres” (capsules) (1), its appearance and characteristics and general paper. The same quality, soft and repeatable display.
  • the size of a tiny sphere represents the size of the display pixel (Pixel), where the tiny sphere is characterized by being driven by an external voltage to change its state.
  • An electronic ink display as mentioned in U.S. Patent Publication No. 20060050050.
  • the characteristic of electronic paper conduction is that it can be changed by the external driving voltage. Therefore, the material needs to be an electric conductor.
  • the electronic paper uses a polymer material to emphasize its flexible characteristics, so it can be scratched like a normal paper. song.
  • the above electrophoretic display (electronic paper) has the advantages that the brightness can reach 3 to 6 times that of the reflective color LCD, which is more convenient to read; can also be browsed in a dark place and in direct sunlight; the contrast is higher than the newspaper; Which angle can be read, just like a document printed on paper.
  • the aforementioned electrophoretic display can display a picture even after the power of the display is turned off. This is advantageous for extending the battery life of the portable device. It is usually not required to turn on the backlight when using it, and the standard power consumption can be lower than 1/1000 of the notebook monitor.
  • electrophoretic display is displayed like a writing on ink on paper, eye fatigue can be alleviated.
  • electrophoretic displays are thinner and lighter.
  • the microcapsules used in the second generation of electrophoretic display technology contain two kinds of black and white pigments (called E-Ink), and the inside carries a transparent fluid, wherein the top of the microcapsule is transparent glass, below Confirm this
  • the electrode (5), ⁇ square is the upper electrode (4).
  • the pigment moves up and down according to the positive and negative of the electrode, which in turn causes black and white color development. It is characterized by replacing the conventional pellet with microcapsules, and filling the capsule with charged black particles (3) and charged white particles (2), and moving the white particles (2) upward by the control of the external electric field.
  • the black particles (3) go up (close to the reader), then the black pixels appear, when the black particles (3) go down (when away from the reader), the white pixels are colored. colour.
  • black and white paint at the same time is that it increases the resolution.
  • the same capsule can be driven by both positive and negative electrodes, that is, one capsule can display two colors. Since the basic modules of this E-Ink electronic paper are very simple, the company emphasizes that the technology can be applied to carriers of different surface materials, including plastic, glass and even woven fabrics.
  • Electrophoretic displays are more portable, reusable, faster to update, less expensive, and even have handwritten input. Therefore, the advantages of using electronic paper technology will bring revolutionary challenges to the future publishing industry. A large number of reading materials, even paper and printers can be carried with you. You can read and read the latest newspapers and edit documents at any time and any place. This scenario will be due to electronic paper technology. The development has quietly come to us. And most importantly, e-paper allows us to protect forests more effectively and protect the global environment. At present, the world consumes more than 200 million tons of paper per year, and a large number of trees need to be cut. The emergence of electronic paper has made an important contribution to maintaining ecological balance.
  • electrophoretic displays electrophoretic paper
  • the Japanese communications department announced that it will use the broadband network to transmit the main domestic newspapers to the users' computers with digital signals, and users can see the news using the unique software. If you have e-paper, you can download the contents of these newspapers or send them over the wireless network. Of course, you can also download blogs and online content, and read them anytime, anywhere. McQueen, an analyst at Forrest Research in the United States, said that if the electronic paper product can leapfrog to technologies such as color and video display, it will replace the cheap and popular LCD display, and at the same time set off a revolution in changing reading concepts.
  • An object of the present invention is to provide an active electrophoretic display driving method, which aims to reduce the electrophoretic display Update the response time of the screen to accelerate the screen display speed of the electrophoretic display.
  • the active electrophoretic display driving method of the present invention is:
  • the active electrophoretic display has a plurality of sub-pixels arranged in a matrix form to sequentially drive a single pixel or a plurality of pixels, and the method comprises the following steps: Input a graph to know the gray value of each pixel, serially drive several pixels; the first serial drive, for all pixels on the panel, drive voltage to convert all pixels into two extreme gray One of the values; according to the defined resolution bit, multiple sequential drive, for all the pixels below the gray level value on the panel, plus the first level of gray value converted to the next level of gray value Drive time and required drive voltage.
  • multiple sequence driving for all the pixels below the gray level value on the panel, plus the driving time required to convert the first level gray value into the next gray value and the required time Drive voltage. This in turn accelerates the display of the screen of the electrophoretic display.
  • the active electrophoretic display driving method of the present invention utilizes the length of time for applying voltage, thereby controlling the screen display time required for the electrophoretic display, and the total driving time of the method of the present invention is the sum of all black pixel driving times plus initial whitening.
  • the time so that its performance is higher than the prior art, reduces the display time of the update screen of the electrophoretic display, and accelerates the screen display speed of the electrophoretic display.
  • Figure 1 is a schematic view of a microsphere (capsule);
  • Figure 2 is a schematic diagram of a sequential drive
  • Figure 3 is a 4-bit grayscale pixel display
  • 5 is a flow chart of an active electrophoretic display driving method
  • Figure 5a is a pixel diagram of an active electrophoretic display driving method
  • Figure 5b is a second pixel diagram of an active electrophoretic display driving method
  • Figure 5c is a third pixel diagram of an active electrophoretic display driving method
  • Figure 5d is a fourth pixel diagram of an active electrophoretic display driving method
  • FIG. 6 is an additional driving time diagram control pixel waveform diagram
  • FIG. 7 is a waveform diagram of a 4-bit gray scale active electrophoretic display driving method.
  • the source driver IC (12) When the gate driver IC (11) turns on or off a column of transistors, the source driver IC (12) inputs the column according to the signal of the control IC. The required voltage is to form a pixel (13). With the serially driven source driver IC (12), multiple pixels (13) can be driven simultaneously.
  • the invention provides an active electrophoretic display driving method.
  • the first serial driving is controlled by a control circuit (15) to control a gate driving IC (11) and a source driving IC (12) for all pixels on the panel. Drive, converts all pixels into one of two extreme gray values.
  • a plurality of different gray values can be distinguished between the two extreme gray values, and the gray value can be 2 bits, 4 bits, 6 bits, 8 bits, 16 Bit or 32 bit and so on.
  • the gray value can be 2 bits, 4 bits, 6 bits, 8 bits, 16 Bit or 32 bit and so on.
  • two bits and four gray levels are taken as an example.
  • the defined black is zero gray (GO)
  • white is three gray (G3)
  • Gl defines non-black and white
  • the other two gray scales, from dark gray to light gray, are referred to herein as Gl, G2.
  • black is G0, followed by dark gray (Gl), followed by light gray (G2), and finally white (G3).
  • the driving voltage required to define the two extreme gray values is set.
  • setting -V is the required driving voltage
  • the pigment in the microcapsule can be moved up and down. Shows white.
  • the +V drive voltage the pigment in the microcapsules can be moved up and down to show black.
  • the driving time required for their driving under the +V voltage is respectively, the time for converting white (G3) to light gray (G2) is dl, and the time for converting light gray (G2) to dark gray (G1) is d2.
  • the time to convert dark gray (G1) to black (GO) is d3.
  • the time to convert any gray to white (G3) is d0.
  • the conversion time dl, d2, d3 or d0 can be of different lengths depending on the time required to convert different gradations.
  • the first step (20) of the flow chart of an active electrophoretic display driving method Enter a graphic and know the gray value of each pixel, as shown in Figure 5, the first step (20) of the flow chart of an active electrophoretic display driving method.
  • the first pixel is white (G3)
  • the second pixel is light gray (G2)
  • the third pixel is dark gray (Gl)
  • the fourth pixel is black (GO).
  • the drive voltage (-V) and the required drive time do convert all pixels into one of the two extreme gray values, see Figure 5a .
  • it is white (G3).
  • all pixels are white (G3), see Figure 5b.
  • the third step (22) of the flow chart of an active electrophoretic display driving method shown in FIG. The second sequential drive (tl to t2), for all light gray (G2) pixels on the panel, including light gray (G2), dark gray (Gl), black (GO) pixels, with white (G3) conversion
  • all pixels above the light gray (G2) are light gray (G2), see Figure 5d.
  • the fourth step (23) of the flow chart of an active electrophoretic display driving method shown in FIG. The third serial drive (t2 to t3), for all dark gray (Gl) pixels above the panel, this includes dark gray (G1) and black (G0) pixels, and light gray (G2) to dark gray (G1) The required drive time d2, and the required drive voltage (+V), see Figure 5e. After the third sequential drive, all dark gray (G1) and above pixels are dark gray (G1), see Figure 5f.
  • the fifth step (24) of the flow chart of an active electrophoretic display driving method shown in FIG. The 4th serial drive (t3 to t4), the drive time d3 required to convert the dark gray (G1) to black (G0) for all black (GO) pixels on the panel, and the required drive voltage (+V) ), see Figure 5g.
  • all black (G0) pixels become black (G0), see Figure 5h.
  • multiple sequence driving for all the pixels below the gray level value on the panel, the driving time required to convert the gray value of the previous level into the gray value of the next level and the required Drive voltage. This in turn accelerates the display of the screen of the electrophoretic display.
  • the overall image of the active electrophoretic display is gradually displayed from shallow to deep, thereby accelerating the display of the electrophoretic display.
  • the present invention provides an active electrophoretic display driving method capable of converting all pixels into black (G3) by the first sequential driving in the second step, driving voltage and required driving time.
  • an active electrophoretic display driving method capable of converting all pixels into black (G3) by the first sequential driving in the second step, driving voltage and required driving time.
  • multiple sequence driving for all the pixels below the gray level value on the panel, plus the driving time required to convert the first level gray value into the next level gray value and the required Drive voltage. This in turn accelerates the display of the screen of the electrophoretic display.
  • the overall image of the active electrophoretic display is gradually displayed from deep to shallow, thereby accelerating the display of the electrophoretic display.
  • the driving time required for the additional driving time to different gradation values is increased or decreased, which is advantageous for controlling the screen display of each gradation value. See Figure 6. Different additional drive times are added to the sequential drive times of different phases. In the second sequential drive ( tl to t2), the extra drive time (el) is reduced from the originally required drive time (dl) as a screen display for controlling pixels above the light gray (G2).
  • the extra drive time (e2) is added from the originally required drive time (d3) as a screen display for controlling black (GO) pixels.
  • the invention provides an active electrophoretic display driving method, which can distinguish many different gray values between two extreme gray values, and the gray value can be 4 bits and 16 gray values.
  • Figure 7. GO to G15 has a total of 16 gray values. For all gray levels (GO ... G15) on the panel, apply the required drive time (f0 ... fl5) and the required drive voltage (+V). The drive time (f0 ... ⁇ 5) can be for different lengths of time, depending on the time required to convert different gradations. Referring to the embodiment of Fig.
  • the driving time ⁇ is longer than the driving time f2, which means that the time required to convert the G14 gradation to the G13 gradation needs to be less than the conversion of the G15 gradation to the G14 gradation to achieve the desired gradation value.
  • the driving time required for the additional driving time to different gradation values is increased or decreased, which is advantageous for controlling the screen display of each gradation value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

L'invention concerne un procédé de commande d'afficheur électrophorétique à initiative. L'afficheur électrophorétique à initiative contient une pluralité de pixels agencés en une matrice, de manière à commander un pixel ou plusieurs pixels séquentiellement. Le procédé comprend les étapes consistant à entrer un graphe, obtenir la valeur de niveau de gris de chaque pixel et commander les pixels séquentiellement. La première commande séquentielle dans le temps sert à appliquer une tension de commande à tous les pixels sur le panneau pour la transition vers l'une des deux valeurs de niveau de gris extrêmes. En fonction du chiffre défini de la résolution, les multiples commandes séquentielles dans le temps servent à appliquer le temps et la tension de commande nécessaires pour la transition du niveau supérieur suivant au niveau inférieur suivant à tous les pixels avec une valeur de niveau de gris supérieure à celle du niveau suivant.
PCT/CN2007/002433 2007-08-14 2007-08-14 Procédé de commande d'afficheur électrophorétique à initiative WO2009021358A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002433 WO2009021358A1 (fr) 2007-08-14 2007-08-14 Procédé de commande d'afficheur électrophorétique à initiative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002433 WO2009021358A1 (fr) 2007-08-14 2007-08-14 Procédé de commande d'afficheur électrophorétique à initiative

Publications (1)

Publication Number Publication Date
WO2009021358A1 true WO2009021358A1 (fr) 2009-02-19

Family

ID=40350340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002433 WO2009021358A1 (fr) 2007-08-14 2007-08-14 Procédé de commande d'afficheur électrophorétique à initiative

Country Status (1)

Country Link
WO (1) WO2009021358A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011120307A1 (fr) * 2010-04-01 2011-10-06 广州奥熠电子科技有限公司 Dispositif d'affichage électrophorétique et son procédé de pilotage
CN106548754A (zh) * 2015-09-17 2017-03-29 达意科技股份有限公司 彩色电泳式显示装置及其显示驱动方法
CN111611192A (zh) * 2020-05-20 2020-09-01 掌阅科技股份有限公司 彩屏阅读器的刷新方法、彩屏阅读器及计算机存储介质

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1839421A (zh) * 2003-08-22 2006-09-27 皇家飞利浦电子股份有限公司 电泳显示板
CN1860514A (zh) * 2003-09-29 2006-11-08 皇家飞利浦电子股份有限公司 具有精确的灰度与自然的图像更新的双稳态显示器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1839421A (zh) * 2003-08-22 2006-09-27 皇家飞利浦电子股份有限公司 电泳显示板
CN1860514A (zh) * 2003-09-29 2006-11-08 皇家飞利浦电子股份有限公司 具有精确的灰度与自然的图像更新的双稳态显示器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011120307A1 (fr) * 2010-04-01 2011-10-06 广州奥熠电子科技有限公司 Dispositif d'affichage électrophorétique et son procédé de pilotage
US9318059B2 (en) 2010-04-01 2016-04-19 Guangzhou Oed Technologies Co., Ltd. Electrophoretic display and drive method thereof
CN106548754A (zh) * 2015-09-17 2017-03-29 达意科技股份有限公司 彩色电泳式显示装置及其显示驱动方法
CN111611192A (zh) * 2020-05-20 2020-09-01 掌阅科技股份有限公司 彩屏阅读器的刷新方法、彩屏阅读器及计算机存储介质

Similar Documents

Publication Publication Date Title
CN1197044C (zh) 显示装置及显示装置的驱动方法
JP5079494B2 (ja) 高速描画モード波形を有する電気泳動ディスプレイ
JP5382528B2 (ja) 画像表示制御装置、画像表示装置、画像表示制御方法、及び画像表示制御プログラム
JP4790623B2 (ja) 電気光学ディスプレイおよびドライブ方法
TWI360096B (en) Flat-panel display with hybrid imaging technology
CN105705991A (zh) 显示系统和方法
WO2018118651A1 (fr) Système de commande pour un dispositif d'affichage à électro-mouillage
US8878880B2 (en) Method of driving electrophoretic display device capable of displaying image data approximated to original image data, electrophoretic display device, and electronic apparatus
WO2018118656A1 (fr) Système de commande pour dispositif d'affichage à électro-mouillage à moteur de rendu
JP5131284B2 (ja) 表示装置
TWI415065B (zh) 雙穩態顯示器及其面板的驅動方法
US8508516B2 (en) Active matrix type display device and portable machine comprising the same
CN101364381A (zh) 主动式电泳显示器驱动方法
WO2009021358A1 (fr) Procédé de commande d'afficheur électrophorétique à initiative
JP5668771B2 (ja) 電気泳動表示装置の制御方法、電気泳動表示装置の制御装置、電気泳動表示装置および電子機器
US20090207128A1 (en) Digital Electrophoretic Display Panel Driving Method and Apparatus
US20090096744A1 (en) Display device and gamma data adjusting method thereof
TW200905635A (en) Driving method of active electrophoretic display
CN101527117B (zh) 数字式电泳显示器面板驱动装置及方法
TWI858677B (zh) 構造成轉換rgb影像資料以在先進彩色電子紙上顯示的彩色顯示器
US9159274B2 (en) Driver for page transitions in an electronic paper device
US20120026141A1 (en) Bistable display apparatus and driving method
Zhou et al. Perspectives and challenges of electrophoretic displays
CN101055679A (zh) 可电子式改变外观的装置
JP5509953B2 (ja) 表示装置

Legal Events

Date Code Title Description
DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07785334

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07785334

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载