201135339 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種電子紙顯示裝置，尤其涉及一種具有觸 摸功能的電子紙顯示裝置。 【先前技術】 [0002] 因為具有低功耗、可彎曲性、厚度薄等優點，電子紙顯 示器被廣泛應用在手機、電子書、電腦、個人數位助理 等電子產品中作為顯示幕幕使用。 Q [0003] 電子紙顯示器的結構通常包括上基板、下基板、電泳顯 示媒質層，上基板下表面設有公共ITO電極，下基板上表 面設有TFT畫素電極，電泳顯示媒質層緊密貼合在公共 ITO電極和TFT晝素電極之間。現有帶觸摸功能的電子紙 顯示器的結構通常是電子紙顯示幕的表面覆蓋一獨立的 觸摸屏，通常觸摸屏通過一黏合層直接黏附在電子紙顯 示器的上基板上表面。所用觸摸屏通常由玻璃或者薄膜 底板以及ITO層組成，由於光線通過玻璃會有一個折射與 Q 反射的過程，到達電子紙的光線會有較大的衰減，尤其 電子紙是反射型顯示幕，本身不具備背光裝置，觸摸屏 所造成的光線損失非常明顯。另外，電子紙顯示幕與觸 摸屏是通過黏合劑層黏結而成，在組裝製造的過程中需 要無塵的條件，對環境要求比較苛刻，增加了製造的成 本，否則很容易引入“内污”，增加顯示裝置在製造過 程中的不良率。 【發明内容】 [0004] 有鑒於此，本發明提供一種帶觸摸功能的電子紙顯示裝 099111006 表單編號A0I01 第3頁/共18頁 0992019320-0 201135339 置，減小觸摸屏造成的光線損失，簡化生產工序、並減 少内污的產生。 [0005] 一種具有觸摸功能的電子紙顯示裝置，該電子紙顯示裝 置依次包括：複合透明電極層，與複合透明電極層接觸 的電泳顯示媒質層，及晝素電極層；所述複合透明電極 層包括至少一層透明觸摸電極層，所述透明觸摸電極層 中的一層透明觸摸電極層，與畫素電極層及電泳顯示媒 質層構成顯示裝置的顯示層；該電子紙顯示裝置還包括 電源和驅動電路，所述驅動電路用於檢測所述複合透明 電極層的被觸摸位置和驅動顯示層進行畫面顯示。 [0006] 在電泳顯示媒質層上直接形成複合透明電極層作為顯示 裝置的觸摸電極層，同時複合透明電極層包含有一公共 透明電極層，該公共電極層與畫素電極層之間施加驅動 電壓對電泳顯示媒質進行畫面刷新。因為複合透明電極 層的使用省去了觸摸屏的玻璃底板和電子紙的上基板， 也就減少了光線的反射與折射過程，顯示幕整體顯示效 果變好，不會產生流動環等光學干涉；也減少了整個產 品的原材料以及顯示幕的生產工序，降低成本；同時組 裝過程中不會引入“内污”。 【實施方式】 [0007] 下面參照附圖來詳細說明本發明的具體結構和技術方案 〇 [0008] 圖1是本發明第一實施方式的電子紙顯示裝置的結構示意 圖。電子紙顯示裝置10 0依次包括保護層10、複合透明電 極層2 0、電泳顯示媒質層3 0以及畫素電極層4 0。 099111006 表單編號 A0101 第 4 頁/共 18 頁 0992019320-0 201135339 [0009] [0010] Ο [0011]201135339 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an electronic paper display device, and more particularly to an electronic paper display device having a touch function. [Prior Art] [0002] Because of its low power consumption, flexibility, and thin thickness, electronic paper displays are widely used as display screens in electronic products such as mobile phones, e-books, computers, and personal digital assistants. Q [0003] The structure of the electronic paper display generally comprises an upper substrate, a lower substrate, an electrophoretic display medium layer, a common ITO electrode is disposed on the lower surface of the upper substrate, a TFT pixel electrode is disposed on the upper surface of the lower substrate, and the electrophoretic display medium layer is closely adhered Between the common ITO electrode and the TFT halogen electrode. The existing electronic paper display with touch function is usually constructed such that the surface of the electronic paper display screen covers a separate touch screen. Usually, the touch screen is directly adhered to the upper surface of the upper substrate of the electronic paper display through an adhesive layer. The touch screen used usually consists of a glass or film substrate and an ITO layer. Since the light passes through the glass, there is a process of refraction and Q reflection. The light reaching the electronic paper will be greatly attenuated, especially the electronic paper is a reflective display screen. With a backlight, the loss of light caused by the touch screen is very obvious. In addition, the electronic paper display screen and the touch screen are bonded by a layer of adhesive. In the process of assembly and manufacturing, dust-free conditions are required, the environment is more demanding, and the manufacturing cost is increased, otherwise it is easy to introduce "internal pollution". Increasing the defect rate of the display device during the manufacturing process. SUMMARY OF THE INVENTION [0004] In view of this, the present invention provides an electronic paper display device with a touch function 099111006 Form No. A0I01 Page 3 / 18 pages 0992019320-0 201135339, reduce the light loss caused by the touch screen, simplify production Process and reduce the generation of internal pollution. [0005] An electronic paper display device with a touch function, the electronic paper display device comprises: a composite transparent electrode layer, an electrophoretic display medium layer in contact with the composite transparent electrode layer, and a halogen electrode layer; the composite transparent electrode layer Including at least one transparent touch electrode layer, one transparent touch electrode layer in the transparent touch electrode layer, and a pixel layer and an electrophoretic display medium layer constituting a display layer of the display device; the electronic paper display device further includes a power source and a driving circuit The driving circuit is configured to detect a touched position of the composite transparent electrode layer and drive the display layer to perform screen display. [0006] directly forming a composite transparent electrode layer on the electrophoretic display medium layer as a touch electrode layer of the display device, and the composite transparent electrode layer includes a common transparent electrode layer, and a driving voltage pair is applied between the common electrode layer and the pixel electrode layer. The electrophoresis display medium is used to refresh the screen. Because the use of the composite transparent electrode layer eliminates the glass substrate of the touch screen and the upper substrate of the electronic paper, the reflection and refraction process of the light is reduced, the overall display effect of the display screen is improved, and optical interference such as a flow ring is not generated; The raw materials of the whole product and the production process of the display screen are reduced, and the cost is reduced; at the same time, "internal pollution" is not introduced in the assembly process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0007] The following is a detailed description of the structure and technical solutions of the present invention with reference to the accompanying drawings. [0008] FIG. 1 is a schematic view showing the configuration of an electronic paper display device according to a first embodiment of the present invention. The electronic paper display device 100 sequentially includes a protective layer 10, a composite transparent electrode layer 20, an electrophoretic display medium layer 30, and a pixel electrode layer 40. 099111006 Form No. A0101 Page 4 of 18 0992019320-0 201135339 [0009] [0010] Ο [0011]
[0012] 保護層10設在電子紙顯示裝置100的外表面，用來保護螢 幕不被劃傷或者污染，通常保護層10是塗布的一層絕緣 油墨或者是一層高透過率的塑膠膜。 複合透明電極層20包括第一透明觸摸電極層201、第二透 明觸摸電極層202、設置於第一透明觸摸電極層201和第 二透明觸摸電極層202之間的透明間隔物203。第一透明 觸摸電極層201和第二透明觸摸電極層202通常選用I TO 薄膜，透明間隔物203為絕緣的透明阻隔物，尺寸約為10 微米到40微米之間。複合透明電極層20在觸摸模式下， 當電子紙顯示裝置100被觸摸時，處於觸摸位置的第一透 明觸摸電極層201會發生彈性形變，並與第二透明觸摸電 極層202接觸，第一透明觸摸電極層201和第二透明觸摸 電極層202上的電流會發生變化，從而產生觸摸信號。 第二透明觸摸電極層202還與電泳顯示媒質層30相接觸， 並作為公共透明電極層，與電泳顯示媒質層30和畫素電 極層40構成顯示層56。複合透明電極層2 0在驅動定址模 式下，通過改變電泳顯示媒質層30的光學狀態來刷新該 電子紙顯示裝置100顯示的畫面。 電泳顯示媒質層30是雙穩態的電子墨水顯示媒質。在第 一實施方式中，電泳顯示媒質層30採用微膠囊式電泳顯 示媒質，該電泳顯示媒介層包括多個微膠囊301，每一微 膠囊301中封裝有若干第一電泳粒子302和第二電泳粒子 303。晝素電極層40包括多個薄膜電晶體（Thin-Film Transistor，TFT)電極，畫素電極層40與電泳顯示媒 質層30之間通過黏合劑接合。 099111006 表單編號A0101 第5頁/共18頁 0992019320-0 201135339 [0013] [0014] [0015] [0016] 请一併結合圖2，其為本發明第一實施方式的電子紙顯示 裝置的功能模組圖。電子紙顯示裝置1〇〇包括複合透明電 極層20、顯示層56、電源57、以及驅動電路5〇。驅動電 路5 0用於檢測複合透明電極層2 〇被觸摸位置和驅動顯示 層56進行顯示。 驅動電路so包括有觸摸控制模組52、中央控制單元53、 電極切換模組55以及電子紙控制模組54。觸摸控制模組 52連接在複合透明電極層2〇和中央控制單元53之間，電 子紙控制模組5 4連接在顯示層5 6和中央控制單元5 3之間 ，電極切換模組55與中央控制單元53、複合透明電極層 20、顯示層56電連接。 該電極切換模組55用於斷開和接通複合透爾電極層2〇或 顯示層56與電源57的電連接《第一實施方式中，電極切 換模組55是由若干MOS開關管組成的電子開關電路。 觸摸控制模組5 2包括電信號檢測單元5 21和觸摸位置偵測 單元522，該電信號檢測單元521與複合透明電極層20電 連接。電源57在第一透明觸摸電極層201和第二透明觸摸 電極層202上施加有電場，也就是，在第一實施方式中電 子紙顯示裝置1〇〇採用電阻式觸摸屏實現觸摸功能。當複 合透明電極層20被觸摸時，處於觸摸位置的第一透明觸 摸電極層201會發生彈性形變，並與第二透明觸摸電極層 202電接觸，第一透明觸摸電極層2〇1和第二透明觸摸電 極層202上的電流會發生變化，該電信號檢測單元521偵 測和採集複合透明電極層20的電信號變化資訊，並將複 合透明電極層20的電信號變化資訊發送至觸摸位置偵測 099111006 表單編號A0101 第6頁/共18頁 0992019320-0 201135339 單元522。觸摸位置_單元奶根據所述電信號變化資 訊確定複合透明電極層2G上的職位置，並將觸摸位置 的資訊輸出至中央控制單元5 3。 [0017] 中央控制單it53根據觸摸位置的資訊判斷電子紙顯示裝 置100顯示的畫面資tfl是否需要更新。例如，該觸摸位置 顯示返回上-級功能表的操作按㈣，電子紙顯示裝置 100需要顯示上-級功能表的顯示頁面，或者觸撰位置顯 Ο [0018] 示檔夾的圖示時，電子紙顯示裝置100需要顯示該檔夾的 具體内容。 若電子紙顯示裝置1〇〇晝面資訊需要更新，中央控制單元 53>發出第一切換指令至電極切換模組55，並根據需要更 新的畫面資訊發出驅動信號至電子紙控制模組54 ;若電 子紙顯示裝置100畫面資訊不需要更新，中央控制單元53 不發出任何指令’電信號檢測單元521繼續债測和採集複 合透明電極層2 0上的電信號彎此資訊:。 ''M：·.； ': ....：：； [0019] Ο 電極切換模組55接收到中矣控制單走各3發出的第—切換 指令時，斷開電源57與複合透南電；&層2〇的電連接，從 而斷開施加在第一透明觸摸電極層201和第二透明觸模電 極層202上的電場’進而退出所述觸摸模式。同時， Z电 極切換模組55控制電源與顯示層56進行電連接，電源5了 在第二透明觸摸電極層202和畫素電極層4〇之間施加無動 電壓，複合透明電極層20從觸摸狀態切換為驅動定址模 式’從而更新該電子紙顯示裝置100顯示的畫面。 [0020] 電子紙控制模組54接收到中央控制單元53發出的驅動信 099111006 表單編號A0101 0992019320 201135339 號控制施加在第二透明觸摸電極層202和畫素電極層40之 間的驅動電壓，改變電泳顯示媒質層30的光學狀態，從 而控制電子紙顯示裝置1 0 0從當前畫面資訊更新到下一畫 面資訊。 [0021] 當電子紙顯示裝置100顯示的畫面資訊更新完畢後，電子 紙控制模組54輸出一切換信號至中央控制單元5 3，中央 控制單元5 3根據所述切換信號發出第二切換指令至電極 切換模組5 5。電極切換模組5 5接收到中央控制單元5 3發 出的第二切換指令，斷開電源57與顯示層56的電連接， 從而斷開施加在第二透明觸摸電極層202和畫素電極層40 之間的驅動電壓，進而退出所述驅動定址模式。同時， 該電極切換模組55控制電源57與複合透明電極層20進行 連接，電源57在第一透明觸摸電極層201和第二透明觸摸 電極層202上施加電場，複合透明電極層20從驅動定址狀 態切換為觸摸模式，從而偵測該電子紙顯示裝置100的被 觸摸位置。 [0022] 請參閱圖3，其為本發明第一實施方式的電子紙顯示裝置 的控制流程圖，包括如下步驟： [0023] 步驟S61，採集複合透明電極層20的電信號變化資訊。電 信號檢測單元521偵測複合透明電極層20的電信號，採集 複合透明電極層的電信號變化資訊，並將採集到的電信 號變化資訊輸出至觸摸位置偵測單元522。 [0024] 步驟S62，根據所述電信號變化資訊確定觸摸位置。觸摸 位置偵測單元522根據採集到的所述電信號變化資訊，確 099111006 表單編號A0101 第8頁/共18頁 0992019320-0 201135339 [0025] ❹ [0026] [0027] ❹ [0028] [0029] 定複合透明電極層的觸摸位置，並將所述觸摸位置的資 訊輸出至中央控制單元53。 步驟S63，根據所述觸摸位置判斷是否需要更新畫面，並 發出第一切換指令和驅動信號。中央控制單元53根據觸 摸位置的資訊判斷是否需要更新顯示晝面，不需要更新 電子紙顯示裝置100的晝面資訊則返回步驟S61，如果需 要更新電子紙顯示裝置100的晝面資訊則中央控制單元53 發出第一切換指令至電極切換模組55以及驅動信號至電 子紙控制模組54。 步驟S64，複合透明電極層20從觸摸狀態切換為驅動定址 狀態。電極切換模組5 5根據第一切換指令，將複合透明 電極層20從觸摸狀態切換為驅動定址狀態。 步驟S6 5，更新電子紙顯示裝置100畫面資訊。電子紙控 制模組54根據驅動信號，改變電泳顯示媒質層30的光學 狀態，控制電子紙顯示裝置100更新到下一畫面資訊。 步驟S66，發出切換信號。電子紙顯示裝置100畫面資訊 更新完畢後，電子紙控制模組54輸出切換信號至中央控 制單元53。 步驟S67，根據所述切換信號發出第二切換指令。中央控 制單元53接收到切換信號，輸出第二切換指令至電極切 換模組5 5。 步驟S68，複合透明電極層20從驅動定址狀態切換為觸摸 狀態。電極切換模組55根據第二切換指令，將複合透明 電極層20從驅動定址狀態切換為觸摸狀態，返回步驟S61 099111006 表單編號Α0101 第9頁/共18頁 0992019320-0 [0030] 201135339 [0031] 圖4是本發明第二實施方式的電子紙顯示裝置的結構示意 圖。電子紙顯示裝置102依次包括保護層12、複合透明電 極層22、電泳顯示媒質層32以及畫素電極層42。第二實 施方式中，電子紙顯示裝置102的功能模組以及控制流程 與第一實施方式相同。第二實施方式的電子紙顯示裝置 102的結構與第一實施方式中的相似，其不同在於複合透 明電極層22僅有一層透明觸摸電極層221，該複合透明電 極層22為一表面式電容觸摸屏的觸摸電極。通常該透明 觸摸電極層221的周邊會加上線性化的金屬電極，來減小 角落/邊緣效應對電場的影響。與第一實施方式中相同， 該複合透明電極層22在觸摸狀態下，當電子紙顯示裝置 102表面被手指觸摸時，透明觸摸電極層221表面就會有 一定的電荷轉移到人體，為了恢復這些電荷損失，電荷 會從透明觸摸電極層221的四角補充過來，透明觸摸電極 層2 21上的電流發生改變且各方向補充的電荷量和觸摸點 的距離成比例。 [0032] 該透明觸摸電極層221也作為公共透明電極層，其在驅動 定址狀態下，透明觸摸電極層221與畫素電極層42施加有 驅動電壓，電泳顯示媒質層32回應該驅動電壓而改變自 身的光學狀態，從而刷新該電子紙顯示裝置102顯示的晝 面。 [0033] 本技術領域的普通技術人員應當認識到，以上的實施方 式僅是用來說明本發明，而並非用作為對本發明的限定 ，只要在本發明的實質精神範圍之内，對以上實施例所 099111006 表單編號A0101 第10頁/共18頁 0992019320-0 201135339 作的適當改變和變化都落在本發明要求保護的範圍之内 〇 [0034] 【圖式簡單說明】 圖1為本發明第一實施方式的電子紙顯示裝置結構示意圖 0 [0035] 圖2為本發明第一實施方式的電子紙顯示裝置的模組圖。 [0036] 圖3為本發明第一實施方式的電子紙顯示裝置的控制流程 圖。 〇 [0037] 圖4為本發明第二實施方式的電子紙顯示裝置結構示意圖 〇 [0038] 【主要元件符號說明】 電子紙顯示裝置：100、102 [0039] 保護層：10、12 [0040] 複合透明電極層：20、22 羡、 [0041] Ο 電泳顯示媒質層：30 ' 32 [0042] 晝素電極層：40、42 [0043] 第一透明觸摸電極層：201 [0044] 第二透明觸摸電極層：202 [0045] 透明觸摸電極層：221 [0046] 透明間隔物：203 [0047] 微膠囊：301 099111006 表單編號Α0101 第11頁/共18頁 0992019320-0 201135339 [0048] 第一電泳粒子：302 [0049] 第二電泳粒子：30 3 [0050] 驅動電路：5 0 [0051] 觸摸控制模組：52 [0052] 電信號檢測單元：521 [0053] 觸摸位置偵測單元：522 [0054] 中央控制單元：5 3 [0055] 電子紙控制模組：54 [0056] 電極切換模組：55 [0057] 顯示層：56 [0058] 電源：57 [0059] 步驟：S61、S62、S63、S64、S65、S66、S67、S68、 S69 099111006 表單編號A0101 第12頁/共18頁 0992019320-0[0012] The protective layer 10 is disposed on the outer surface of the electronic paper display device 100 for protecting the screen from scratches or contamination. Generally, the protective layer 10 is a coated insulating ink or a high transmittance plastic film. The composite transparent electrode layer 20 includes a first transparent touch electrode layer 201, a second transparent touch electrode layer 202, and a transparent spacer 203 disposed between the first transparent touch electrode layer 201 and the second transparent touch electrode layer 202. The first transparent touch electrode layer 201 and the second transparent touch electrode layer 202 are generally selected from an I TO film, and the transparent spacer 203 is an insulating transparent barrier having a size of between about 10 micrometers and 40 micrometers. In the touch mode, when the electronic paper display device 100 is touched, the first transparent touch electrode layer 201 at the touch position is elastically deformed and is in contact with the second transparent touch electrode layer 202, the first transparent The current on the touch electrode layer 201 and the second transparent touch electrode layer 202 changes to generate a touch signal. The second transparent touch electrode layer 202 is also in contact with the electrophoretic display medium layer 30, and serves as a common transparent electrode layer, and constitutes the display layer 56 with the electrophoretic display medium layer 30 and the pixel electrode layer 40. The composite transparent electrode layer 20 refreshes the screen displayed by the electronic paper display device 100 by changing the optical state of the electrophoretic display medium layer 30 in the drive addressing mode. The electrophoretic display medium layer 30 is a bistable electronic ink display medium. In the first embodiment, the electrophoretic display medium layer 30 adopts a microcapsule electrophoretic display medium, and the electrophoretic display medium layer includes a plurality of microcapsules 301, and each of the microcapsules 301 is packaged with a plurality of first electrophoretic particles 302 and a second electrophoresis. Particle 303. The halogen electrode layer 40 includes a plurality of thin film transistor (TFT) electrodes, and the pixel electrode layer 40 and the electrophoretic display medium layer 30 are bonded by an adhesive. 099111006 Form No. A0101 Page 5 / 18 pages 0992019320-0 201135339 [0015] [0016] [0016] Please also refer to FIG. 2, which is a functional model of the electronic paper display device according to the first embodiment of the present invention. Group picture. The electronic paper display device 1A includes a composite transparent electrode layer 20, a display layer 56, a power source 57, and a drive circuit 5A. The driving circuit 50 is for detecting that the composite transparent electrode layer 2 is displayed by the touched position and the driving display layer 56. The driving circuit so includes a touch control module 52, a central control unit 53, an electrode switching module 55, and an electronic paper control module 54. The touch control module 52 is connected between the composite transparent electrode layer 2 and the central control unit 53. The electronic paper control module 54 is connected between the display layer 56 and the central control unit 53. The electrode switching module 55 and the center are connected. The control unit 53, the composite transparent electrode layer 20, and the display layer 56 are electrically connected. The electrode switching module 55 is configured to open and close the electrical connection between the composite barrier electrode layer 2 or the display layer 56 and the power source 57. In the first embodiment, the electrode switching module 55 is composed of a plurality of MOS switch tubes. Electronic switch circuit. The touch control module 52 includes an electrical signal detecting unit 521 and a touch position detecting unit 522, and the electrical signal detecting unit 521 is electrically connected to the composite transparent electrode layer 20. The power source 57 applies an electric field to the first transparent touch electrode layer 201 and the second transparent touch electrode layer 202. That is, in the first embodiment, the electronic paper display device 1 uses a resistive touch panel to implement a touch function. When the composite transparent electrode layer 20 is touched, the first transparent touch electrode layer 201 at the touch position is elastically deformed and electrically contacts the second transparent touch electrode layer 202, and the first transparent touch electrode layer 2〇1 and the second The current on the transparent touch electrode layer 202 is changed. The electrical signal detecting unit 521 detects and collects the electrical signal change information of the composite transparent electrode layer 20, and sends the electrical signal change information of the composite transparent electrode layer 20 to the touch position detection. 099111006 Form No. A0101 Page 6 of 18 0992019320-0 201135339 Unit 522. The touch position_unit milk determines the position on the composite transparent electrode layer 2G based on the electrical signal change information, and outputs the information of the touch position to the central control unit 53. [0017] The central control unit it53 determines whether the screen resource tfl displayed by the electronic paper display device 100 needs to be updated based on the information of the touched position. For example, the touch position display returns to the operation of the upper-level function table (4), and the electronic paper display device 100 needs to display the display page of the upper-level function table, or the touch position display [0018] when the icon of the display folder is displayed, The electronic paper display device 100 needs to display the specific contents of the folder. If the information of the electronic paper display device 1 needs to be updated, the central control unit 53 sends a first switching command to the electrode switching module 55, and sends a driving signal to the electronic paper control module 54 according to the screen information to be updated; The electronic paper display device 100 does not need to update the screen information, and the central control unit 53 does not issue any command. The electrical signal detecting unit 521 continues the debt measurement and collects the electrical signal on the composite transparent electrode layer 20 to bend this information: ''M:·.; ': ....::; [0019] 电极 When the electrode switching module 55 receives the first switching command issued by each of the three control commands, the power supply 57 is disconnected from the composite The electrical connection of the <layer 2 turns, thereby breaking the electric field applied to the first transparent touch electrode layer 201 and the second transparent contact electrode layer 202, thereby exiting the touch mode. At the same time, the Z electrode switching module 55 controls the power supply to be electrically connected to the display layer 56. The power source 5 applies a non-moving voltage between the second transparent touch electrode layer 202 and the pixel electrode layer 4, and the composite transparent electrode layer 20 is The touch state is switched to the drive address mode 'to update the screen displayed by the electronic paper display device 100. [0020] The electronic paper control module 54 receives the drive letter 099111006 issued by the central control unit 53. Form No. A0101 0992019320 201135339 controls the driving voltage applied between the second transparent touch electrode layer 202 and the pixel electrode layer 40 to change the electrophoresis. The optical state of the medium layer 30 is displayed, thereby controlling the electronic paper display device 100 to update from the current screen information to the next screen information. [0021] After the screen information displayed by the electronic paper display device 100 is updated, the electronic paper control module 54 outputs a switching signal to the central control unit 53, and the central control unit 53 issues a second switching command according to the switching signal to Electrode switching module 55. The electrode switching module 55 receives the second switching command from the central control unit 53 and disconnects the electrical connection between the power source 57 and the display layer 56, thereby opening the second transparent touch electrode layer 202 and the pixel electrode layer 40. The driving voltage between them exits the drive addressing mode. At the same time, the electrode switching module 55 controls the power source 57 to be connected to the composite transparent electrode layer 20. The power source 57 applies an electric field on the first transparent touch electrode layer 201 and the second transparent touch electrode layer 202, and the composite transparent electrode layer 20 is driven from the address. The state is switched to the touch mode to detect the touched position of the electronic paper display device 100. Please refer to FIG. 3, which is a control flowchart of the electronic paper display device according to the first embodiment of the present invention, including the following steps: [0023] Step S61, collecting electrical signal change information of the composite transparent electrode layer 20. The electrical signal detecting unit 521 detects the electrical signal of the composite transparent electrode layer 20, collects the electrical signal change information of the composite transparent electrode layer, and outputs the collected electrical signal change information to the touch position detecting unit 522. [0024] Step S62, determining a touch location according to the electrical signal change information. The touch position detecting unit 522 determines the information according to the collected electrical signal, and confirms that the number is 99111006, the form number A0101, the eighth page, the total number of pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, the number of the pages, The touch position of the composite transparent electrode layer is set, and the information of the touch position is output to the central control unit 53. Step S63, determining whether the screen needs to be updated according to the touch position, and issuing a first switching instruction and a driving signal. The central control unit 53 determines whether it is necessary to update the display surface based on the information of the touched position, and does not need to update the facet information of the electronic paper display device 100 to return to step S61. If the face information of the electronic paper display device 100 needs to be updated, the central control unit 53 sends a first switching command to the electrode switching module 55 and the driving signal to the electronic paper control module 54. In step S64, the composite transparent electrode layer 20 is switched from the touch state to the drive address state. The electrode switching module 55 switches the composite transparent electrode layer 20 from the touch state to the drive address state in accordance with the first switching command. In step S6 5, the screen information of the electronic paper display device 100 is updated. The electronic paper control module 54 changes the optical state of the electrophoretic display medium layer 30 based on the drive signal, and controls the electronic paper display device 100 to update to the next screen information. In step S66, a switching signal is issued. After the electronic paper display device 100 screen information is updated, the electronic paper control module 54 outputs a switching signal to the central control unit 53. Step S67, issuing a second switching instruction according to the switching signal. The central control unit 53 receives the switching signal and outputs a second switching command to the electrode switching module 55. In step S68, the composite transparent electrode layer 20 is switched from the drive address state to the touch state. The electrode switching module 55 switches the composite transparent electrode layer 20 from the driving address state to the touch state according to the second switching instruction, and returns to step S61 099111006 Form No. 1010101 Page 9/18 pages 0992019320-0 [0030] 201135339 [0031] 4 is a schematic structural view of an electronic paper display device according to a second embodiment of the present invention. The electronic paper display device 102 includes a protective layer 12, a composite transparent electrode layer 22, an electrophoretic display medium layer 32, and a pixel electrode layer 42 in this order. In the second embodiment, the functional modules and control flow of the electronic paper display device 102 are the same as those of the first embodiment. The structure of the electronic paper display device 102 of the second embodiment is similar to that of the first embodiment, except that the composite transparent electrode layer 22 has only one transparent touch electrode layer 221, and the composite transparent electrode layer 22 is a surface capacitive touch screen. Touch electrode. Typically, a linearized metal electrode is applied to the periphery of the transparent touch electrode layer 221 to reduce the effect of the corner/edge effect on the electric field. As in the first embodiment, when the composite transparent electrode layer 22 is in a touch state, when the surface of the electronic paper display device 102 is touched by a finger, a certain amount of charge is transferred to the human body on the surface of the transparent touch electrode layer 221, in order to restore these. The charge is lost, the charge is replenished from the four corners of the transparent touch electrode layer 221, the current on the transparent touch electrode layer 21 is changed, and the amount of charge replenished in each direction is proportional to the distance of the touch point. [0032] The transparent touch electrode layer 221 also functions as a common transparent electrode layer. In the driving address state, the transparent touch electrode layer 221 and the pixel electrode layer 42 are applied with a driving voltage, and the electrophoretic display medium layer 32 is changed by the driving voltage. Its own optical state, thereby refreshing the face displayed by the electronic paper display device 102. The above embodiments are merely illustrative of the invention and are not intended to limit the invention, as long as it is within the spirit of the invention, the above embodiments. 099111006 Form No. A0101 Page 10 / Total 18 Page 0992019320-0 201135339 Appropriate changes and changes are within the scope of the claimed invention [0034] [Simple Description of the Drawings] Figure 1 is the first of the present invention FIG. 2 is a block diagram of an electronic paper display device according to a first embodiment of the present invention. FIG. 3 is a control flow chart of the electronic paper display device according to the first embodiment of the present invention. 4 is a schematic structural view of an electronic paper display device according to a second embodiment of the present invention [0038] [Description of main component symbols] Electronic paper display device: 100, 102 [0039] Protective layer: 10, 12 [0040] Composite transparent electrode layer: 20, 22 羡, [0041] 电泳 Electrophoretic display medium layer: 30 ' 32 [0042] Alizarin electrode layer: 40, 42 [0043] First transparent touch electrode layer: 201 [0044] Second transparent Touch electrode layer: 202 [0045] Transparent touch electrode layer: 221 [0046] Transparent spacer: 203 [0047] Microcapsule: 301 099111006 Form number Α 0101 Page 11 / 18 pages 0992019320-0 201135339 [0048] First electrophoresis Particle: 302 [0049] Second electrophoretic particle: 30 3 [0050] Drive circuit: 5 0 [0051] Touch control module: 52 [0052] Electrical signal detection unit: 521 [0053] Touch position detection unit: 522 [ 0054] Central Control Unit: 5 3 [0055] Electronic Paper Control Module: 54 [0056] Electrode Switching Module: 55 [0057] Display Layer: 56 [0058] Power Supply: 57 [0059] Steps: S61, S62, S63 , S64, S65, S66, S67, S68, S69 099111006 Form No. A0101 Page 12 / 18 0992019320-0