TWI748245B - Touch screen system and chip thereof - Google Patents

Touch screen system and chip thereof Download PDF

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TWI748245B
TWI748245B TW108134228A TW108134228A TWI748245B TW I748245 B TWI748245 B TW I748245B TW 108134228 A TW108134228 A TW 108134228A TW 108134228 A TW108134228 A TW 108134228A TW I748245 B TWI748245 B TW I748245B
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chip
image
sensing
touch panel
touch
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TW202113566A (en
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王人傑
曾玄文
林嘉興
陶逸欣
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義隆電子股份有限公司
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Priority to CN202010138941.7A priority patent/CN111538194A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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

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  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

A touch screen system is applied to an e-paper display with a touch panel. The touch screen system includes a first chip, which has an analog circuit for sensing the touch panel to generate a plurality of sensing values and an analog to digital converter converting the plurality of sensing values into sensing information, and a second chip connected to the first chip and configured to receive the sensing information and a first picture. The second chip includes a controller for controlling the e-paper display to show the first picture, controlling the first chip to sense the touch panel, and generating a touch coordinates according to the sensing information. The processing of the second chip is higher than the processing of the first chip.

Description

觸控顯示系統及其晶片Touch display system and its chip

本發明是有關一種電子紙顯示器，特別是關於一種具有觸控功能的電子紙顯示器。The present invention relates to an electronic paper display, in particular to an electronic paper display with touch function.

電子紙顯示器廣泛的被用在閱讀電子書或新聞。圖1顯示一具有電子紙顯示器的電子裝置A。電子裝置A包括一主機10、一時序控制積體電路(integrated circuit; IC)12以及一電子紙顯示器14。電子紙顯示器14連接時序控制IC 12。主機10係例如中央處理單元(central processing unit; CPU)，其傳送多張圖像Sid給時序控制IC 12。時序控制IC 12包含控制器121以及一快閃記憶體122用以儲存程式。控制器121可以用微控制器(microcontroller; MCU)來實現。控制器121執行儲存在快閃記憶體122中的程式以控制電子紙顯示器14顯示圖像Sid。E-paper displays are widely used to read e-books or news. Figure 1 shows an electronic device A with an electronic paper display. The electronic device A includes a host 10, a timing integrated circuit (IC) 12 and an electronic paper display 14. The electronic paper display 14 is connected to the timing control IC 12. The host 10 is, for example, a central processing unit (CPU), which transmits multiple images Sid to the timing control IC 12. The timing control IC 12 includes a controller 121 and a flash memory 122 for storing programs. The controller 121 can be implemented by a microcontroller (MCU). The controller 121 executes a program stored in the flash memory 122 to control the electronic paper display 14 to display the image Sid.

本發明的目的之一，在於提出一種具有觸控功能的電子紙顯示器。One of the objectives of the present invention is to provide an electronic paper display with touch function.

本發明的目的之一，在於提出一種應用在具有觸控功能的電子紙顯示器的觸控顯示系統。One of the objectives of the present invention is to provide a touch display system applied to an electronic paper display with touch function.

一種觸控顯示系統，應用於具有觸控面板的電子紙顯示器，該觸控顯示系統包括：一第一晶片，包括一類比電路用以感測該觸控面板而產生多個感應量，以及一類比數位轉換器將該多個感應量轉換成一感應資訊；以及一第二晶片，連接該第一晶片，接收該感應資訊以及接收一第一圖像。該第二晶片包括一控制器，用以控制該電子紙顯示器顯示該第一圖像，控制該第一晶片感測該觸控面板，以及根據該感應資訊產生一接觸座標。其中，該第二晶片的製程較第一晶片的製程先進。A touch display system applied to an electronic paper display with a touch panel. The touch display system includes: a first chip, including an analog circuit for sensing the touch panel to generate a plurality of sensing quantities, and a The analog-to-digital converter converts the plurality of sensing quantities into sensing information; and a second chip, connected to the first chip, receives the sensing information and receives a first image. The second chip includes a controller for controlling the electronic paper display to display the first image, controlling the first chip to sense the touch panel, and generating a contact coordinate based on the sensing information. Wherein, the manufacturing process of the second wafer is more advanced than the manufacturing process of the first wafer.

一種晶片，應用於具有觸控面板的電子紙顯示器，該晶片包括：一控制器，控制該電子紙顯示器顯示一第一圖像，控制對該觸控面板的感測，以及根據該觸控面板的感測結果產生一接觸座標。A chip applied to an electronic paper display with a touch panel, the chip comprising: a controller for controlling the electronic paper display to display a first image, controlling the sensing of the touch panel, and according to the touch panel The result of sensing produces a contact coordinate.

請參閱圖2，一電子裝置B包括一主機20、一具有觸控面板的電子紙顯示器22以及一根據本發明的觸控顯示系統S。電子裝置B可以是例如平板電腦。主機20可以是例如該電子裝置B的中央處理器，主控該電子裝置B的操作。電子紙顯示器22包括一觸控面板221與一顯示模組222，在一實施例中，觸控面板221是一電容式觸控面板，包括多條X方向電極X1~X4與Y方向電極Y1~Y5，在圖2中，X方向電極與Y方向電極的數量僅為說明本發明的實施例，並無意限制本發明。顯示模組222用以顯示影像。在圖2的實施例中，觸控面板221是疊加在顯示模組222之上。在其他的實施例中，將觸控面板221整合至顯示模組222中亦是可能的。觸控顯示系統S包括一第一晶片24與一第二晶片26。第一晶片24包括一類比電路241與一類比數位轉換器242。該類比電路241是由一驅動電路2411與一感測電路2412組成，用以感測觸控面板221產生多個感應量。驅動電路2411與感測電路2412耦接到觸控面板221的X方向電極與/或Y方向電極，驅動電路2411用以提供驅動信號Sdr給觸控面板221，感測電路2412量測觸控面板522產生多個感應量。類比數位轉換器242連接感測電路2412，用於將該類比電路241輸出的多個感應量轉換成一感應資訊Std，該感應資訊Std包括多個數位值，代表觸控面板221的各個位置的感應量。第二晶片26接收主機20傳送的圖像Sid以及第一晶片24輸出的感應資訊Std。第二晶片26包含控制器261以及記憶體262。控制器261連接記憶體262。記憶體262可以是例如快閃記憶體(Flash Memory)，用以儲存供該控制器261執行的程式。控制器261可以用微控制器(Micro-Controller Unit；MCU)來實現，其中包括一數位電路用以根據第一晶片24輸出的感應資訊Std計算接觸座標。控制器261執行儲存在記憶體262中的程式以控制顯示模組222顯示圖像Sid、控制第一晶片24感測觸控面板221，以及根據第一晶片24輸出的感應資訊Std進行運算以產生一接觸座標Stc。控制器261產生接觸座標Stc後傳送給主機20。Please refer to FIG. 2, an electronic device B includes a host 20, an electronic paper display 22 with a touch panel, and a touch display system S according to the present invention. The electronic device B may be, for example, a tablet computer. The host 20 may be, for example, the central processing unit of the electronic device B, which controls the operation of the electronic device B. The electronic paper display 22 includes a touch panel 221 and a display module 222. In one embodiment, the touch panel 221 is a capacitive touch panel including a plurality of X-direction electrodes X1~X4 and Y-direction electrodes Y1~ Y5, in FIG. 2, the number of X-direction electrodes and Y-direction electrodes is only an embodiment of the present invention, and is not intended to limit the present invention. The display module 222 is used for displaying images. In the embodiment of FIG. 2, the touch panel 221 is superimposed on the display module 222. In other embodiments, it is also possible to integrate the touch panel 221 into the display module 222. The touch display system S includes a first chip 24 and a second chip 26. The first chip 24 includes an analog circuit 241 and an analog-to-digital converter 242. The analog circuit 241 is composed of a driving circuit 2411 and a sensing circuit 2412 for sensing the touch panel 221 to generate a plurality of sensing quantities. The driving circuit 2411 and the sensing circuit 2412 are coupled to the X-direction electrodes and/or the Y-direction electrodes of the touch panel 221. The driving circuit 2411 is used to provide a driving signal Sdr to the touch panel 221, and the sensing circuit 2412 measures the touch panel 522 generates multiple induction quantities. The analog-to-digital converter 242 is connected to the sensing circuit 2412, and is used to convert the plurality of sensing quantities output by the analog circuit 241 into a sensing information Std. The sensing information Std includes a plurality of digital values representing the sensing of each position of the touch panel 221 quantity. The second chip 26 receives the image Sid transmitted by the host 20 and the sensing information Std output by the first chip 24. The second chip 26 includes a controller 261 and a memory 262. The controller 261 is connected to the memory 262. The memory 262 may be, for example, a flash memory (Flash Memory) for storing programs for the controller 261 to execute. The controller 261 can be implemented by a Micro-Controller Unit (MCU), which includes a digital circuit for calculating the contact coordinates based on the sensing information Std output by the first chip 24. The controller 261 executes the program stored in the memory 262 to control the display module 222 to display the image Sid, control the first chip 24 to sense the touch panel 221, and perform calculations based on the sensing information Std output by the first chip 24 to generate One touch coordinate Stc. The controller 261 generates the contact coordinate Stc and transmits it to the host 20.

在本發明中，第一晶片24主要用於感測觸控面板221並產生感測資訊Std輸出給第二晶片26，其中並不具有用於計算接觸座標的數位電路，換言之，第一晶片24並不具有計算接觸座標的能力。而第二晶片26的功能，相當於是一個具有計算接觸座標功能的時序控制積體電路，分時進行控制顯示模組222顯示影像以及根據感測資訊Std產生接觸座標Stc。在本發明中，第二晶片26的製程較第一晶片24的製程先進。熟習半導體製程之人士當了解，較為先進的製程意謂著具有較小的線寬與線距。也就是說，第二晶片26的線寬與/或線距小於第一晶片24的線寬/或線距。In the present invention, the first chip 24 is mainly used to sense the touch panel 221 and generate the sensing information Std to output to the second chip 26. There is no digital circuit for calculating the contact coordinates. In other words, the first chip 24 Does not have the ability to calculate contact coordinates. The function of the second chip 26 is equivalent to a timing control integrated circuit with the function of calculating contact coordinates, and time-sharing controls the display module 222 to display images and generate contact coordinates Stc based on the sensing information Std. In the present invention, the manufacturing process of the second wafer 26 is more advanced than the manufacturing process of the first wafer 24. Those who are familiar with semiconductor manufacturing processes should understand that a more advanced manufacturing process means a smaller line width and line spacing. In other words, the line width and/or line pitch of the second wafer 26 is smaller than the line width and/or line pitch of the first wafer 24.

一般來說，用於感測觸控面板221的類比電路與用於計算接觸座標的數位電路會設置在同一個晶片中。本發明中刻意只將用於感測觸控面板221的類比電路241設置在第一晶片24中，並且將計算座標所需的數位電路整合到第二晶片26中。由於類比電路241對製程的要求較低，因此可以使用較低階的製程，如此一來，第一晶片24的成本可以降低。第二晶片26包括計算接觸座標所需的數位電路，使用較先進的製程來製作第二晶片26，有利於第二晶片26的運作速度及工作效率。Generally speaking, the analog circuit for sensing the touch panel 221 and the digital circuit for calculating the contact coordinates are arranged in the same chip. In the present invention, only the analog circuit 241 for sensing the touch panel 221 is disposed in the first chip 24, and the digital circuit required for calculating the coordinates is integrated into the second chip 26. Since the analog circuit 241 has lower manufacturing process requirements, a lower-level manufacturing process can be used. As a result, the cost of the first chip 24 can be reduced. The second chip 26 includes a digital circuit for calculating contact coordinates. The second chip 26 is fabricated by a more advanced process, which is beneficial to the operation speed and work efficiency of the second chip 26.

一般來說，用於感測觸控面板的觸控晶片具有一微控制器，用以控制驅動電路與感測電路的運作，以及根據感測電路的輸出計算接觸座標。如果直接搭配如圖1的時序控制積體電路12來實現觸控與顯示的控制功能，總共會需要兩個微控制器。而在圖2的觸控顯示系統S中，第一晶片24並不具有微控制器，第一晶片24的運作，例如驅動電路2411進行驅動、感測電路2412進行量測，以及類比數位轉換器242進行類比數位轉換，是由第二晶片26的控制器261所控制。換言之，觸控顯示系統S實現了觸控與顯示的控制功能，但只需要一個微控制器，因此，觸控顯示系統S的成本可以降低。Generally, the touch chip used for sensing the touch panel has a microcontroller for controlling the operation of the driving circuit and the sensing circuit, and calculating the contact coordinates based on the output of the sensing circuit. If it is directly matched with the timing control integrated circuit 12 shown in FIG. 1 to realize the control function of touch and display, a total of two microcontrollers will be required. In the touch display system S of FIG. 2, the first chip 24 does not have a microcontroller. The operation of the first chip 24, such as the driving circuit 2411 for driving, the sensing circuit 2412 for measuring, and the analog-to-digital converter 242 performs analog-to-digital conversion and is controlled by the controller 261 of the second chip 26. In other words, the touch display system S realizes the control functions of touch and display, but only requires a microcontroller. Therefore, the cost of the touch display system S can be reduced.

電子紙顯示器22通常是應用在較靜態圖像的場合，例如電子書或閱讀新聞。主機20提供前後二個圖像Sid可能只會有一小部分有變化，如圖3所示，第一圖像30顯示文字“A”、“B”及“C”，而第二圖像32顯示文字“A”、“B”、“C”及“D”，前後二張圖像的差別只在文字“D”的部分，根據本發明，可以只局部更新文字“D”的部分。具體而言，第二晶片26的控制器261在控制顯示模組222顯示第一圖像30時，同時將第一圖像30儲存在暫存器(圖中未示出)。在控制器261收到下一張圖像，也就是第二圖像32時，控制器261比對第一圖像30與第二圖像32決定一差異區域322包括文字”D”，然後只根據該差異區域322的位置及畫素資訊，更新顯示模組222中對應該差異區域322的畫素(pixel)，其他畫素則不更新，使得顯示模組222顯示的畫面等同於第二圖像32。換言之，控制器261係根據第一圖像30與第二圖像32之間的差異，局部更新電子紙顯示器22的畫面。這樣作的優點是更新速度較快。The electronic paper display 22 is usually used in relatively static images, such as e-books or reading news. The host 20 may provide only a small part of the two images Sid before and after it is provided. As shown in FIG. 3, the first image 30 displays the words "A", "B" and "C", and the second image 32 displays For the characters "A", "B", "C" and "D", the difference between the two images is only in the "D" part. According to the present invention, only the part of the character "D" can be updated. Specifically, when the controller 261 of the second chip 26 controls the display module 222 to display the first image 30, it also stores the first image 30 in the register (not shown in the figure). When the controller 261 receives the next image, that is, the second image 32, the controller 261 compares the first image 30 with the second image 32 to determine that a difference area 322 includes the text "D", and then only According to the position and pixel information of the difference area 322, the pixels corresponding to the difference area 322 in the display module 222 are updated, and other pixels are not updated, so that the screen displayed by the display module 222 is equivalent to the second image Like 32. In other words, the controller 261 locally updates the screen of the electronic paper display 22 according to the difference between the first image 30 and the second image 32. The advantage of doing this is that the update speed is faster.

圖4顯示另一種局部更新的實施例，可以支援觸控筆40。觸控筆40可以是主動式或被動式觸控筆。當使用者用手指或觸控筆40於電子紙顯示器22上移動以輸入文字或圖案(例如線條)時，控制器261將計算出來的接觸座標Stc傳送至主機20，主機20會根據座標資料Stc提供包含主動筆40的移動軌跡的圖像52(如圖5所示)給第二晶片26。在圖5中，圖像50就是圖4中電子紙顯示器22正在顯示的圖像。從圖5可以看出，圖像52與圖像50的差異主要就是觸控筆40造成的筆跡522。控制器261可根據圖像52與圖像50的差異(即筆跡522)，以及最新獲得的一個或多個座標資料Stc產生筆跡，局部更新電子紙顯示器22的畫面。換言之，第二晶片26是將觸控筆40最新的筆跡更新到電子紙顯示器22的畫面，相較於由主機20將畫面加入筆跡再顯示在電子紙顯示器22上，本發明能夠更為即時的反應觸控筆40的操作，提供較佳的使用體驗。FIG. 4 shows another embodiment of partial update, which can support the stylus 40. The stylus 40 may be an active or passive stylus. When the user uses a finger or stylus 40 to move on the electronic paper display 22 to input text or patterns (such as lines), the controller 261 transmits the calculated contact coordinates Stc to the host 20, and the host 20 will use the coordinate data Stc An image 52 (as shown in FIG. 5) containing the movement track of the active pen 40 is provided to the second chip 26. In FIG. 5, the image 50 is the image being displayed on the electronic paper display 22 in FIG. It can be seen from FIG. 5 that the difference between the image 52 and the image 50 is mainly the handwriting 522 caused by the stylus 40. The controller 261 can generate the handwriting based on the difference between the image 52 and the image 50 (ie, the handwriting 522) and the newly obtained one or more coordinate data Stc, and locally update the screen of the electronic paper display 22. In other words, the second chip 26 updates the latest handwriting of the stylus 40 to the screen of the electronic paper display 22. Compared with the host 20 adding the handwriting to the screen and then displaying it on the electronic paper display 22, the present invention can be more immediate It responds to the operation of the stylus 40 and provides a better user experience.

本發明的第二晶片26具有觸控及顯示控制的功能，可以搭配第一晶片24以支援具有觸控功能的電子紙顯示器22，也能支援無觸控功能的電子紙顯示器，因此本發明的第二晶片26可以應用到較多的場合，有助於簡化物料的管理。The second chip 26 of the present invention has the functions of touch control and display control. It can be matched with the first chip 24 to support the electronic paper display 22 with touch function, and can also support the electronic paper display without touch function. Therefore, the present invention The second chip 26 can be applied to many occasions, which helps to simplify the management of materials.

以上對於本發明之較佳實施例所作的敘述係為闡明之目的，而無意限定本發明精確地為所揭露的形式，基於以上的教導或從本發明的實施例學習而作修改或變化是可能的，實施例係為解說本發明的原理以及讓熟習該項技術者以各種實施例利用本發明在實際應用上而選擇及敘述，本發明的技術思想企圖由之後的申請專利範圍及其均等來決定。The above description of the preferred embodiments of the present invention is for the purpose of clarification, and is not intended to limit the present invention to the disclosed form accurately. Modifications or changes are possible based on the above teaching or learning from the embodiments of the present invention Yes, the embodiments are selected and described in order to explain the principles of the present invention and allow those familiar with the technology to use the present invention in various embodiments in practical applications. The technical ideas of the present invention are intended to be derived from the scope of subsequent patent applications and their equality. Decide.

A:電子裝置 10:主機 12:時序控制積體電路 121:控制器 122:快閃記憶體 14:電子紙顯示器 B:電子裝置 20:主機 22:電子紙顯示器 221:觸控面板 222:顯示模組 24:第一晶片 241:類比電路 2411:驅動電路 2412:感測電路 242:類比數位轉換器 26:第二晶片 261:控制器 262:記憶體 30:第一圖像 32:第二圖像 322:差異區域 40:觸控筆 50:圖像 52:圖像 522:筆跡A: Electronic device 10: Host 12: Timing control integrated circuit 121: Controller 122: flash memory 14: Electronic paper display B: Electronic device 20: host 22: Electronic paper display 221: Touch Panel 222: display module 24: The first chip 241: Analog Circuit 2411: drive circuit 2412: Sensing circuit 242: Analog-to-digital converter 26: second chip 261: Controller 262: memory 30: The first image 32: second image 322: Difference Area 40: Stylus 50: image 52: image 522: handwriting

圖1顯示一具有電子紙顯示器的電子裝置。 圖2顯示本發明應用於具有觸控面板的電子紙顯示器的觸控顯示系統。 圖3顯示局部更新的實施例。 圖4顯示另一種局部更新的實施例。 圖5顯示將觸控筆的筆跡更新到電子紙顯示器的畫面的實施例。Figure 1 shows an electronic device with an electronic paper display. FIG. 2 shows the application of the present invention to a touch display system of an electronic paper display with a touch panel. Figure 3 shows an example of a partial update. Figure 4 shows another partial update embodiment. FIG. 5 shows an embodiment of updating the handwriting of the stylus to the screen of the electronic paper display.

B:電子裝置B: Electronic device

20:主機20: host

22:電子紙顯示器22: Electronic paper display

221:觸控面板221: Touch Panel

222:顯示模組222: display module

24:第一晶片24: The first chip

241:類比電路241: Analog Circuit

2411:驅動電路2411: drive circuit

2412:感測電路2412: Sensing circuit

242:類比數位轉換器242: Analog-to-digital converter

26:第二晶片26: second chip

261:控制器261: Controller

262:記憶體262: memory

Claims (5)

一種觸控顯示系統，應用於具有觸控面板的電子紙顯示器，該觸控顯示系統包括：一第一晶片，包括一類比電路用以感測該觸控面板而產生多個感應量，以及一類比數位轉換器將該多個感應量轉換成一感應資訊；以及一第二晶片，連接該第一晶片，接收該感應資訊以及接收一第一圖像，該第二晶片包括：一控制器，用以控制該電子紙顯示器顯示該第一圖像，控制該第一晶片感測該觸控面板，以及根據該感應資訊產生一接觸座標；其中，該第二晶片的製程較第一晶片的製程先進。 A touch display system applied to an electronic paper display with a touch panel. The touch display system includes: a first chip, including an analog circuit for sensing the touch panel to generate a plurality of sensing quantities, and a The analog-to-digital converter converts the plurality of sensing quantities into sensing information; and a second chip connected to the first chip, receiving the sensing information and receiving a first image, the second chip including: a controller, To control the electronic paper display to display the first image, control the first chip to sense the touch panel, and generate a contact coordinate based on the sensing information; wherein the process of the second chip is more advanced than that of the first chip . 如請求項1之觸控顯示系統，其中該類比電路包括：一驅動電路，用於提供驅動信號給該觸控面板；以及一感測電路，用以量測該觸控面板獲得該多個感應量。 The touch display system of claim 1, wherein the analog circuit includes: a driving circuit for providing a driving signal to the touch panel; and a sensing circuit for measuring the touch panel to obtain the plurality of sensing quantity. 如請求項1之觸控顯示系統，其中該控制器根據該第一圖像與一第二圖像的差異，局部更新該電子紙顯示器的畫面。 For example, the touch display system of claim 1, wherein the controller locally updates the screen of the electronic paper display according to the difference between the first image and the second image. 如請求項1之觸控顯示系統，其中該控制器根據該第一圖像與一第二圖像的差異以及該接觸座標局部更新該電子紙顯示器的畫面。 For example, the touch display system of claim 1, wherein the controller locally updates the screen of the electronic paper display according to the difference between the first image and the second image and the contact coordinates. 一種晶片，應用於具有觸控面板的電子紙顯示器，該晶片包括：一控制器，用於控制該電子紙顯示器顯示一第一圖像，控制另一晶片對該觸控面板進行感測，以及根據該觸控面板的感測結果產生一接觸座標；一記憶體，連接該控制器，用以儲存供該控制器執行的程式； 其中，該控制器更用於根據該第一圖像與一第二圖像的差異以及該接觸座標局部更新該電子紙顯示器的畫面。 A chip applied to an electronic paper display with a touch panel, the chip comprising: a controller for controlling the electronic paper display to display a first image, controlling another chip to sense the touch panel, and Generate a touch coordinate according to the sensing result of the touch panel; a memory connected to the controller for storing programs for the controller to execute; Wherein, the controller is further used to locally update the screen of the electronic paper display according to the difference between the first image and the second image and the contact coordinates.
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