TWI780962B - Touch handwriting board - Google Patents

Touch handwriting board Download PDF

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TWI780962B
TWI780962B TW110139652A TW110139652A TWI780962B TW I780962 B TWI780962 B TW I780962B TW 110139652 A TW110139652 A TW 110139652A TW 110139652 A TW110139652 A TW 110139652A TW I780962 B TWI780962 B TW I780962B
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touch
solar cell
film solar
substrate
thin film
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TW110139652A
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TW202318164A (en
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黃志騰
韓心瑜
向怡璇
羅康銘
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凌巨科技股份有限公司
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Priority to CN202111402528.8A priority patent/CN116027916A/en
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Publication of TW202318164A publication Critical patent/TW202318164A/en

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

A touch handwriting board including a touch display panel, a touch erase module and a thin film solar cell is provided. The touch display panel has a touch display region. The touch erase module is electrically coupled to the touch display panel, and is used to erase at least one touch trajectory. The thin film solar cell overlaps the touch display region, and is located on one side of a display surface of the touch display panel. The transmittance of the thin film solar cell is greater than or equal to 50%. The thin film solar cell is electrically coupled to the touch erase module, and is used to provide the electric power required to erase the at least one touch trajectory.

Description

觸控手寫板touch tablet

本發明是有關於一種輸入裝置，且特別是有關於一種觸控手寫板。The present invention relates to an input device, and in particular to a touch tablet.

電子手寫板具有無紙化且可重複書寫的特性，常用於會議討論、教學、記事等場合。近年來，液晶手寫板因具有低功耗以及高解析的顯示效果而逐漸受市場青睞。此外，潔淨能源的蓬勃發展更帶動了在不同領域的應用可能。例如：利用太陽能電池來作為手寫板的操作電源。一般來說，這類手寫板會將太陽能電池設置在手寫板的背蓋或模組邊框上。然而，這樣的作法會阻礙手寫板的輕薄化。另一方面，現行的電子手寫板雖然具有消除手寫筆跡的功能，但卻無法針對局部的手寫區域進行消除，造成使用上的不便。The electronic writing board has the characteristics of paperless and repeatable writing, and is often used in conference discussions, teaching, note-taking and other occasions. In recent years, liquid crystal writing tablets have gradually become popular in the market due to their low power consumption and high-resolution display effects. In addition, the vigorous development of clean energy has further promoted the possibility of application in different fields. For example: using solar cells as the operating power of the tablet. Generally speaking, this type of tablet will have a solar cell installed on the back cover of the tablet or on the frame of the module. However, such an approach will hinder the thinning and lightening of the tablet. On the other hand, although the current electronic tablet has the function of eliminating handwriting, it cannot eliminate the local handwriting area, which causes inconvenience in use.

本發明提供一種整合薄膜太陽能電池來消除觸控軌跡的觸控手寫板，其外觀極為輕薄。The invention provides a touch tablet which integrates thin-film solar cells to eliminate touch traces, and has an extremely light and thin appearance.

本發明的觸控手寫板，包括觸控顯示面板、觸控消除模組以及薄膜太陽能電池。觸控顯示面板具有觸控顯示區。觸控消除模組電性耦接觸控顯示面板，且用於消除觸控顯示區內的至少一觸控軌跡。薄膜太陽能電池重疊設置於觸控顯示區，且位於觸控顯示面板的顯示面的一側。薄膜太陽能電池的光穿透率大於等於50%。薄膜太陽能電池電性耦接觸控消除模組，且用以提供消除至少一觸控軌跡所需的電力。The touch tablet of the present invention includes a touch display panel, a touch elimination module and a thin film solar cell. The touch display panel has a touch display area. The touch elimination module is electrically coupled to the touch display panel, and is used for eliminating at least one touch trace in the touch display area. The thin-film solar cells are overlapped on the touch display area and located on one side of the display surface of the touch display panel. The light transmittance of thin film solar cells is greater than or equal to 50%. The thin-film solar cell is electrically coupled to the touch canceling module, and is used to provide power required for canceling at least one touch track.

在本發明的一實施例中，上述的觸控手寫板更包括儲存單元。儲存單元電性耦接觸控顯示面板，且用於儲存至少一觸控軌跡。In an embodiment of the present invention, the above-mentioned touch tablet further includes a storage unit. The storage unit is electrically coupled to the touch-control display panel and used for storing at least one touch track.

在本發明的一實施例中，上述的觸控手寫板的觸控消除模組具有電性耦接觸控顯示面板與薄膜太陽能電池的儲電元件。In an embodiment of the present invention, the above-mentioned touch cancellation module of the touch tablet has an electric storage element electrically coupled to the touch display panel and the thin film solar cell.

在本發明的一實施例中，上述的觸控手寫板的觸控消除模組具有電性耦接觸控顯示面板的區域控制單元。區域控制單元用於定義觸控顯示區內進行部分的至少一觸控軌跡消除步驟的局部區域。In an embodiment of the present invention, the above-mentioned touch cancellation module of the touch tablet has an area control unit electrically coupled to the touch display panel. The area control unit is used for defining a partial area in which at least one touch track elimination step is performed in the touch display area.

在本發明的一實施例中，上述的觸控手寫板的觸控顯示面板包括第一基板、第二基板、液晶層以及電極層。第二基板與第一基板相對設置，且第二基板背離第一基板的表面定義顯示面。液晶層設置在第一基板與第二基板之間。電極層設置在液晶層與第一基板之間。薄膜太陽能電池設置在第二基板上，並且電性耦接電極層。In an embodiment of the present invention, the touch display panel of the touch tablet includes a first substrate, a second substrate, a liquid crystal layer and an electrode layer. The second substrate is arranged opposite to the first substrate, and the surface of the second substrate facing away from the first substrate defines a display surface. The liquid crystal layer is disposed between the first substrate and the second substrate. The electrode layer is arranged between the liquid crystal layer and the first substrate. The thin film solar cell is disposed on the second substrate and electrically coupled to the electrode layer.

在本發明的一實施例中，上述的觸控手寫板的液晶層為膽固醇型液晶層。In an embodiment of the present invention, the liquid crystal layer of the above-mentioned touch tablet is a cholesteric liquid crystal layer.

在本發明的一實施例中，上述的觸控手寫板的薄膜太陽能電池設置在觸控顯示面板的顯示面上。薄膜太陽能電池背離顯示面的一側設有覆蓋薄膜太陽能電池的保護層。In an embodiment of the present invention, the thin-film solar cell of the above-mentioned touch tablet is disposed on the display surface of the touch display panel. The side of the thin film solar cell facing away from the display surface is provided with a protective layer covering the thin film solar cell.

在本發明的一實施例中，上述的觸控手寫板的薄膜太陽能電池內嵌於第二基板內。In an embodiment of the present invention, the thin-film solar cell of the above-mentioned touch tablet is embedded in the second substrate.

在本發明的一實施例中，上述的觸控手寫板的觸控顯示區具有中央區域以及位於中央區域四周的周圍區域。薄膜太陽能電池為多條太陽能電池走線。這些太陽能電池走線設置在周圍區域內，且不重疊於中央區域。In an embodiment of the present invention, the touch display area of the above-mentioned touch tablet has a central area and surrounding areas located around the central area. Thin film solar cells are multiple solar cell wires. These solar battery traces are arranged in the surrounding area and do not overlap with the central area.

基於上述，在本發明的一實施例的觸控手寫板中，薄膜太陽能電池可以為觸控顯示面板提供所需的電力來消除觸控軌跡。透過將薄膜太陽能電池設置在觸控顯示區內且位於顯示面的一側，除了能增加薄膜太陽能電池的收光面積外，還能實現窄邊框設計，有助於觸控手寫板的輕薄化。Based on the above, in the touch tablet according to an embodiment of the present invention, the thin film solar cell can provide the required power for the touch display panel to eliminate the touch track. By arranging the thin-film solar cell in the touch display area and on one side of the display surface, in addition to increasing the light-receiving area of the thin-film solar cell, a narrow frame design can be realized, which is helpful for thinning the touch tablet.

有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之一較佳實施例的詳細說明中，將可清楚的呈現。以下實施例中所提到的方向用語，例如：上、下、左、右、前或後等，僅是參考附加圖式的方向。因此，使用的方向用語是用來說明並非用來限制本發明。The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

圖1是依照本發明的一實施例的觸控手寫板的俯視示意圖。圖2是圖1的觸控手寫板的剖視示意圖。圖3是圖2的太陽能電池走線的剖視示意圖。圖4是圖1的觸控手寫板的方塊圖。圖2對應於圖1的剖線A-A’。請參照圖1、圖2及圖4，觸控手寫板10包括觸控顯示面板100、觸控消除模組200和薄膜太陽能電池300。觸控顯示面板100具有觸控顯示區TDR以及觸控顯示區TDR以外的周邊區PR。FIG. 1 is a schematic top view of a touch tablet according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the touch tablet shown in FIG. 1 . FIG. 3 is a schematic cross-sectional view of the wiring of the solar cell in FIG. 2 . FIG. 4 is a block diagram of the touch tablet in FIG. 1 . Fig. 2 corresponds to the section line A-A' of Fig. 1 . Please refer to FIG. 1 , FIG. 2 and FIG. 4 , the touch tablet 10 includes a touch display panel 100 , a touch cancellation module 200 and a thin film solar cell 300 . The touch display panel 100 has a touch display region TDR and a peripheral region PR other than the touch display region TDR.

在本實施例中，觸控顯示面板100包括第一基板101、第二基板102、液晶層LCL、電極層EL1和電極層EL2。第二基板102與第一基板101相對設置，且第二基板102背離第一基板101的表面102s可定義出觸控顯示面板100的顯示面DS。基板的材質可包括玻璃、石英、高分子材料（例如聚醯亞胺、聚碳酸酯）、或其他合適的基板材料。液晶層LCL設置在第一基板101與第二基板102之間，並且包括多個液晶分子LC。電極層EL1設置在第一基板101上，且位於液晶層LCL與第一基板101之間。電極層EL2設置在第二基板102上且位於液晶層LCL與第二基板102之間。In this embodiment, the touch display panel 100 includes a first substrate 101 , a second substrate 102 , a liquid crystal layer LCL, an electrode layer EL1 and an electrode layer EL2 . The second substrate 102 is disposed opposite to the first substrate 101 , and the surface 102 s of the second substrate 102 facing away from the first substrate 101 can define a display surface DS of the touch display panel 100 . The material of the substrate may include glass, quartz, polymer material (such as polyimide, polycarbonate), or other suitable substrate materials. The liquid crystal layer LCL is disposed between the first substrate 101 and the second substrate 102, and includes a plurality of liquid crystal molecules LC. The electrode layer EL1 is disposed on the first substrate 101 and located between the liquid crystal layer LCL and the first substrate 101 . The electrode layer EL2 is disposed on the second substrate 102 and located between the liquid crystal layer LCL and the second substrate 102 .

舉例來說，電極層EL1可具有彼此電性分離的多個畫素電極PE，且這些畫素電極PE可定義出觸控顯示面板100的多個顯示畫素。電極層EL1與第一基板101之間可設有與這些畫素電極PE電性連接的畫素電路層110。畫素電路層110例如包括多個主動元件（未繪示）、多條資料線（未繪示）和多條掃描線（未繪示），每一個主動元件可電性連接對應的一個畫素電極PE、一條資料線和一條掃描線。在本實施例中，電極層EL2可以是整面性地分布在第二基板102上的非圖案化電極。亦即，電極層EL2可以是這些顯示畫素的共電極。For example, the electrode layer EL1 can have a plurality of pixel electrodes PE electrically separated from each other, and these pixel electrodes PE can define a plurality of display pixels of the touch display panel 100 . A pixel circuit layer 110 electrically connected to these pixel electrodes PE may be disposed between the electrode layer EL1 and the first substrate 101 . The pixel circuit layer 110 includes, for example, a plurality of active elements (not shown), a plurality of data lines (not shown) and a plurality of scanning lines (not shown), and each active element can be electrically connected to a corresponding pixel electrode PE, a data line and a scanning line. In this embodiment, the electrode layer EL2 may be a non-patterned electrode distributed on the second substrate 102 over the entire surface. That is, the electrode layer EL2 may be a common electrode of these display pixels.

需說明的是，本發明並不加以限制觸控顯示面板100的電極配置方式。在其他實施例中，電極層的配置方式和組成當可根據實際液晶層LCL的操作模式而調整。It should be noted that the present invention does not limit the electrode configuration of the touch display panel 100 . In other embodiments, the arrangement and composition of the electrode layers can be adjusted according to the actual operation mode of the liquid crystal layer LCL.

在本實施例中，液晶層LCL例如是具有雙穩態（bistable state）的膽固醇型液晶（cholesteric liquid crystal）層。當膽固醇型液晶層受外力按壓時，會產生排列狀態的改變，進而使被按壓處的顯示狀態由暗態轉變為亮態。也就是說，本實施例的觸控顯示面板100可藉由手寫筆或手指的按壓書寫來產生手寫軌跡。In this embodiment, the liquid crystal layer LCL is, for example, a cholesteric liquid crystal layer having a bistable state. When the cholesteric liquid crystal layer is pressed by an external force, the alignment state will be changed, and the display state at the pressed position will change from a dark state to a bright state. That is to say, the touch display panel 100 of the present embodiment can generate a handwriting trace by pressing and writing with a stylus or a finger.

然而，本發明不以此為限。在其他實施例中，觸控顯示面板100也可以是內嵌式電容觸控（in-cell touch）顯示面板，且液晶層LCL的材料不限於膽固醇型液晶，例如也可以是向列型液晶（nematic liquid crystal）。However, the present invention is not limited thereto. In other embodiments, the touch display panel 100 may also be an in-cell touch display panel, and the material of the liquid crystal layer LCL is not limited to cholesteric liquid crystal, for example, it may also be a nematic liquid crystal ( nematic liquid crystal).

在本實施例中，觸控消除模組200電性耦接觸控顯示面板100，且用於消除觸控顯示區TDR內的觸控軌跡。舉例來說，觸控消除模組200可包括消除開關元件210、儲電元件230和區域控制單元250。消除開關元件210電性耦接儲電元件230和區域控制單元250，且用來觸發位於觸控顯示區TDR內的觸控（或手寫）軌跡的消除動作。在本實施例中，消除開關元件210可選擇性地設置在觸控顯示面板100的周邊區PR，但不以此為限。在其他實施例中，消除開關元件210也可以人機介面的虛擬按鈕來呈現。例如：利用觸控顯示面板100的顯示區內的周圍區域來顯示此虛擬按鈕，但不以此為限。In this embodiment, the touch elimination module 200 is electrically coupled to the touch display panel 100 and used for eliminating touch traces in the touch display region TDR. For example, the touch cancellation module 200 may include a cancellation switch element 210 , a power storage element 230 and an area control unit 250 . The erasing switch element 210 is electrically coupled to the power storage element 230 and the area control unit 250 , and is used for triggering an erasing action of the touch (or handwriting) track located in the touch display area TDR. In this embodiment, the cancel switch element 210 can be selectively disposed on the peripheral region PR of the touch display panel 100 , but not limited thereto. In other embodiments, the cancel switch element 210 can also be presented as a virtual button of the man-machine interface. For example: using the surrounding area in the display area of the touch display panel 100 to display the virtual button, but not limited thereto.

儲電元件230電性耦接觸控顯示面板100，且適於儲存用來消除觸控軌跡所需的電力。更具體地說，儲電元件230可電性耦接至電極層EL1的多個畫素電極PE。The power storage element 230 is electrically coupled to the touch-control display panel 100 and is suitable for storing power required for erasing touch traces. More specifically, the power storage element 230 can be electrically coupled to a plurality of pixel electrodes PE of the electrode layer EL1.

特別注意的是，電性耦接觸控顯示面板100的區域控制單元250可用於定義觸控顯示區TDR內欲進行觸控軌跡消除步驟的區域範圍。使用者可視操作狀況並經由區域控制單元250設定欲清除軌跡的區域範圍（例如局部區域I）。也就是說，使用者可針對部分的觸控軌跡（例如局部區域I內的觸控軌跡TR2）進行清除，而保留另一部分的觸控軌跡（例如觸控軌跡TR1）。亦即，本實施例的觸控手寫板10具有觸控軌跡的局部消除功能。It should be noted that the area control unit 250 electrically coupled to the touch display panel 100 can be used to define the range of the area within the touch display area TDR where the step of removing touch traces is to be performed. The user can set the area range (such as the local area I) of the track to be cleared through the area control unit 250 according to the operation status. That is to say, the user can clear part of the touch track (for example, the touch track TR2 in the local area I), and keep another part of the touch track (for example, the touch track TR1 ). That is to say, the touch tablet 10 of this embodiment has the function of partially erasing the touch track.

薄膜太陽能電池300電性耦接觸控消除模組200的儲電元件230，且用以提供消除觸控軌跡所需的電力。在本實施例中，薄膜太陽能電池300所產生的電力可儲存在觸控消除模組200的儲電元件230中。由於本實施例的觸控顯示面板100是採用膽固醇型液晶來作為觸控顯示層，其所需的重置（reset）電壓並不高，因此適合以薄膜太陽能電池作為電力來源。亦即，本實施例的觸控顯示面板100具有低功耗的操作電性。The thin film solar cell 300 is electrically coupled to the power storage element 230 of the touch cancellation module 200 and is used to provide the power needed to cancel the touch track. In this embodiment, the power generated by the thin film solar cell 300 can be stored in the power storage element 230 of the touch cancellation module 200 . Since the touch display panel 100 of this embodiment uses cholesteric liquid crystal as the touch display layer, the required reset voltage is not high, so it is suitable to use thin film solar cells as the power source. That is to say, the touch display panel 100 of this embodiment has low power consumption operation electrical properties.

特別注意的是，由於薄膜太陽能電池300的光穿透率大於等於50%，因此可將薄膜太陽能電池300重疊設置於觸控顯示區TDR，且位於觸控顯示面板100的顯示面DS的一側。除了能增加薄膜太陽能電池300的收光面積外，還能實現窄邊框設計，有助於觸控手寫版的輕薄化。此處的重疊關係是指兩構件沿著方向Z的投影相重疊。以下若未特別提及，則任兩構件的重疊關係都是以相同的方式來界定，便不再贅述。It should be noted that since the light transmittance of the thin-film solar cell 300 is greater than or equal to 50%, the thin-film solar cell 300 can be stacked on the touch display region TDR and located on one side of the display surface DS of the touch display panel 100 . In addition to increasing the light-receiving area of the thin-film solar cell 300 , it can also achieve a narrow frame design, which is conducive to thinning and lightening the touch-sensitive handwriting plate. The overlapping relationship here means that the projections of the two components along the direction Z overlap. If there is no special mention below, the overlapping relationship between any two components is defined in the same way, and will not be repeated here.

在本實施例中，薄膜太陽能電池300例如是多條太陽能電池走線310的組合，且這些太陽能電池走線310內嵌於第二基板102內，但不以此為限。這些太陽能電池走線310可沿著方向X排列並且沿著方向Y跨越整個觸控顯示區TDR，但不以此為限。In this embodiment, the thin film solar cell 300 is, for example, a combination of a plurality of solar cell wires 310 , and these solar cell wires 310 are embedded in the second substrate 102 , but it is not limited thereto. The solar cell traces 310 may be arranged along the direction X and span the entire touch display region TDR along the direction Y, but not limited thereto.

請同時參照圖3，舉例來說，太陽能電池走線310可包括第一電極E1、第二電極E2、第一非本徵半導體層311、本徵半導體層312和第二非本徵半導體層313。第一非本徵半導體層311具有第一摻雜類型，第二非本徵半導體層313具有第二摻雜類型，且第一摻雜類型與第二摻雜類型各自為P型與N型中的一者。在本實施例中，第一非本徵半導體層311可以是P型半導體層，而第二非本徵半導體層313可以是N型半導體層。Please refer to FIG. 3 at the same time. For example, the solar cell wiring 310 may include a first electrode E1, a second electrode E2, a first extrinsic semiconductor layer 311, an intrinsic semiconductor layer 312, and a second extrinsic semiconductor layer 313. . The first extrinsic semiconductor layer 311 has a first doping type, the second extrinsic semiconductor layer 313 has a second doping type, and the first doping type and the second doping type are respectively P-type and N-type. one of. In this embodiment, the first extrinsic semiconductor layer 311 may be a P-type semiconductor layer, and the second extrinsic semiconductor layer 313 may be an N-type semiconductor layer.

另一方面，由於薄膜太陽能電池300適於從第二基板102的表面102s的一側接收來自外部的環境光線（例如陽光），因此第一電極E1與第二電極E2分別為透光電極與反射電極。透光電極的材質包括金屬氧化物，例如：銦錫氧化物、銦鋅氧化物、鋁錫氧化物、鋁鋅氧化物、或其它合適的氧化物、或者是上述至少兩者之堆疊層。反射電極的材質包括鋁、銀、鉻、上述的合金、上述的組合、或其他具有高反射率的金屬材料。On the other hand, since the thin film solar cell 300 is suitable for receiving ambient light (such as sunlight) from the side of the surface 102s of the second substrate 102, the first electrode E1 and the second electrode E2 are light-transmitting electrodes and reflective electrodes respectively. electrode. The material of the light-transmitting electrode includes metal oxides, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, or other suitable oxides, or a stacked layer of at least two of the above. The material of the reflective electrode includes aluminum, silver, chromium, the above alloys, the above combinations, or other metal materials with high reflectivity.

進一步而言，為了將欲消除的觸控軌跡進行保存，觸控手寫板10還可選擇性地包括儲存單元130。儲存單元130電性耦接觸控顯示面板100，且適於儲存來自觸控顯示面板100上的觸控軌跡資訊。應可理解的是，觸控顯示面板100也適於從儲存單元130提取先前已被消除的觸控軌跡並重新顯示在觸控顯示面板100的觸控顯示區TDR中。據此，可增加觸控手寫板10的操作彈性。Furthermore, in order to save the touch track to be deleted, the touch tablet 10 can also optionally include a storage unit 130 . The storage unit 130 is electrically coupled to the touch display panel 100 and is suitable for storing touch track information from the touch display panel 100 . It should be understood that the touch display panel 100 is also suitable for extracting previously deleted touch traces from the storage unit 130 and displaying them again in the touch display region TDR of the touch display panel 100 . Accordingly, the operating flexibility of the touch tablet 10 can be increased.

以下將列舉另一些實施例以詳細說明本揭露，其中相同的構件將標示相同的符號，並且省略相同技術內容的說明，省略部分請參考前述實施例，以下不再贅述。Some other embodiments will be listed below to describe the present disclosure in detail, wherein the same components will be marked with the same symbols, and the description of the same technical content will be omitted.

圖5是依照本發明的另一實施例的觸控手寫板的俯視示意圖。請參照圖5，本實施例的觸控手寫板10A與圖1的觸控手寫板10的差異在於：薄膜太陽能電池的配置方式不同。具體而言，觸控手寫板10A的薄膜太陽能電池300A僅設置在觸控顯示區TDR的部分區域內。舉例來說，觸控顯示區TDR具有中央區域TDRc以及位於中央區域TDRc四周的周圍區域TDRp。薄膜太陽能電池300A的多條太陽能電池走線310A設置在周圍區域TDRp內，且不重疊於中央區域TDRc。據此，可增加觸控顯示面板100和太陽能電池310A間的電路設計彈性。例如：在中央區域TDRc的電極層設計無須考量與太陽能電池走線310A間的電性耦合效應。FIG. 5 is a schematic top view of a touch tablet according to another embodiment of the present invention. Please refer to FIG. 5 , the difference between the touch tablet 10A of this embodiment and the touch tablet 10 in FIG. 1 lies in the configuration of the thin film solar cells. Specifically, the thin film solar cell 300A of the touch tablet 10A is only disposed in a partial area of the touch display region TDR. For example, the touch display region TDR has a central region TDRc and a peripheral region TDRp located around the central region TDRc. The plurality of solar cell traces 310A of the thin film solar cell 300A are disposed in the peripheral region TDRp and do not overlap the central region TDRc. Accordingly, the flexibility of circuit design between the touch display panel 100 and the solar cell 310A can be increased. For example, the design of the electrode layer in the central region TDRc does not need to consider the electrical coupling effect with the solar cell wiring 310A.

圖6是依照本發明的又一實施例的觸控手寫板的剖視示意圖。請參照圖6，本實施例的觸控手寫板10B與圖2的觸控手寫板10的差異在於：薄膜太陽能電池的配置方式不同。在本實施例中，薄膜太陽能電池300B的多條太陽能電池走線310B是設置在觸控顯示面板100A的第二基板102A的表面102s（或顯示面DS）上，且薄膜太陽能電池300B背離顯示面DS的一側設有覆蓋這些太陽能電池走線310的保護層150。更具體地說，本實施例的薄膜太陽能電池300B和圖2的薄膜太陽能電池300的製程可不同。舉例來說，在本實施例中，薄膜太陽能電池300B的製作可在觸控顯示面板100A組立後才進行。據此，可增加觸控手寫板10B的製程彈性。FIG. 6 is a schematic cross-sectional view of a touch tablet according to another embodiment of the present invention. Please refer to FIG. 6 , the difference between the touch tablet 10B of this embodiment and the touch tablet 10 in FIG. 2 lies in the arrangement of the thin film solar cells. In this embodiment, the multiple solar cell wires 310B of the thin film solar cell 300B are arranged on the surface 102s (or display surface DS) of the second substrate 102A of the touch display panel 100A, and the thin film solar cell 300B faces away from the display surface One side of the DS is provided with a protection layer 150 covering these solar cell wirings 310 . More specifically, the manufacturing processes of the thin film solar cell 300B of this embodiment and the thin film solar cell 300 of FIG. 2 may be different. For example, in this embodiment, the thin film solar cell 300B can be fabricated after the touch display panel 100A is assembled. Accordingly, the process flexibility of the touch tablet 10B can be increased.

保護層150的材質可以是無機材料（例如：氮化矽、二氧化矽或三氧化二鋁）、有機材料（例如：並五苯、二乙二醇二甲醚或聚醯亞胺）、或上述的組合、或其他合適的透光材料。舉例來說，當保護層150的材質為無機材料時，其可具有隔絕水氧的能力以及減少漏電的優點；當保護層150的材質為有機材料時，其可具有較小的寄生電容以及較佳的平坦度。The protective layer 150 can be made of inorganic materials (such as silicon nitride, silicon dioxide or aluminum oxide), organic materials (such as pentacene, diglyme or polyimide), or The combination of the above, or other suitable light-transmitting materials. For example, when the material of the protective layer 150 is an inorganic material, it can have the advantages of isolating water and oxygen and reducing electric leakage; when the material of the protective layer 150 is an organic material, it can have a smaller parasitic capacitance and a smaller Excellent flatness.

綜上所述，在本發明的一實施例的觸控手寫板中，薄膜太陽能電池可以為觸控顯示面板提供所需的電力來消除觸控軌跡。透過將薄膜太陽能電池設置在觸控顯示區內且位於顯示面的一側，除了能增加薄膜太陽能電池的收光面積外，還能實現窄邊框設計，有助於觸控手寫板的輕薄化。To sum up, in the touch tablet according to an embodiment of the present invention, the thin film solar cell can provide the required power for the touch display panel to eliminate the touch track. By arranging the thin-film solar cell in the touch display area and on one side of the display surface, in addition to increasing the light-receiving area of the thin-film solar cell, a narrow frame design can be realized, which is helpful for thinning the touch tablet.

10、10A、10B:觸控手寫板 100、100A:觸控顯示面板 101:第一基板 102、102A:第二基板 102s:表面 110:畫素電路層 130:儲存單元 150:保護層 200:觸控消除模組 210:消除開關元件 230:儲電元件 250:區域控制單元 300、300A、300B:薄膜太陽能電池 310、310A、310B:太陽能電池走線 311:第一非本徵半導體層 312:本徵半導體層 313:第二非本徵半導體層 DS:顯示面 E1:第一電極 E2:第二電極 EL1、EL2:電極層 LC:液晶分子 LCL:液晶層 PE:畫素電極 PR:周邊區 TDR:觸控顯示區 TDRc:中央區域 TDRp:周圍區域 TR1、TR2:觸控軌跡 X、Y、Z:方向 A-A’:剖線 I:局部區域 10, 10A, 10B: touch tablet 100, 100A: touch display panel 101: The first substrate 102, 102A: second substrate 102s: surface 110:Pixel circuit layer 130: storage unit 150: protective layer 200:Touch elimination module 210: Eliminate switching elements 230: electric storage element 250:Zone control unit 300, 300A, 300B: thin film solar cells 310, 310A, 310B: solar cell wiring 311: the first extrinsic semiconductor layer 312: Intrinsic semiconductor layer 313: the second extrinsic semiconductor layer DS: display surface E1: first electrode E2: second electrode EL1, EL2: electrode layer LC: liquid crystal molecules LCL: liquid crystal layer PE: pixel electrode PR: Peripheral District TDR: touch display area TDRc: Central Region TDRp: surrounding area TR1, TR2: touch track X, Y, Z: direction A-A': section line I: local area

圖1是依照本發明的一實施例的觸控手寫板的俯視示意圖。 圖2是圖1的觸控手寫板的剖視示意圖。 圖3是圖2的太陽能電池走線的剖視示意圖。 圖4是圖1的觸控手寫板的方塊圖。 圖5是依照本發明的另一實施例的觸控手寫板的俯視示意圖。 圖6是依照本發明的又一實施例的觸控手寫板的剖視示意圖。 FIG. 1 is a schematic top view of a touch tablet according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the touch tablet shown in FIG. 1 . FIG. 3 is a schematic cross-sectional view of the wiring of the solar cell in FIG. 2 . FIG. 4 is a block diagram of the touch tablet in FIG. 1 . FIG. 5 is a schematic top view of a touch tablet according to another embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a touch tablet according to another embodiment of the present invention.

10:觸控手寫板 10:Touch tablet

100:觸控顯示面板 100: Touch display panel

130:儲存單元 130: storage unit

200:觸控消除模組 200:Touch elimination module

210:消除開關元件 210: Eliminate switching elements

300:薄膜太陽能電池 300: thin film solar cells

310:太陽能電池走線 310: Solar cell wiring

PR:周邊區 PR: Peripheral District

TDR:觸控顯示區 TDR: touch display area

TR1、TR2:觸控軌跡 TR1, TR2: touch track

X、Y、Z:方向 X, Y, Z: direction

A-A’:剖線 A-A': section line

I:局部區域 I: local area

Claims (8)

一種觸控手寫板，包括：一觸控顯示面板，具有一觸控顯示區；一觸控消除模組，電性耦接該觸控顯示面板，且用於消除該觸控顯示區內的至少一觸控軌跡；以及一薄膜太陽能電池，重疊設置於該觸控顯示區，且位於該觸控顯示面板的一顯示面的一側，該薄膜太陽能電池的光穿透率大於等於50%，該薄膜太陽能電池電性耦接該觸控消除模組，且用以提供消除該至少一觸控軌跡所需的電力，其中該觸控顯示面板包括一第一基板、一第二基板、一液晶層以及一電極層，該第二基板與該第一基板相對設置，該第二基板背離該第一基板的一表面定義該顯示面，該液晶層設置在該第一基板與該第二基板之間，該電極層設置在該液晶層與該第一基板之間，該薄膜太陽能電池設置在該第二基板上，並且電性耦接該電極層。 A touch tablet, comprising: a touch display panel, with a touch display area; a touch elimination module, electrically coupled to the touch display panel, and used to eliminate at least A touch track; and a thin film solar cell, which is overlapped on the touch display area and located on one side of a display surface of the touch display panel, the light transmittance of the thin film solar cell is greater than or equal to 50%, the The thin-film solar cell is electrically coupled to the touch elimination module, and is used to provide the power required to eliminate the at least one touch track, wherein the touch display panel includes a first substrate, a second substrate, and a liquid crystal layer and an electrode layer, the second substrate is arranged opposite to the first substrate, a surface of the second substrate facing away from the first substrate defines the display surface, and the liquid crystal layer is arranged between the first substrate and the second substrate , the electrode layer is disposed between the liquid crystal layer and the first substrate, and the thin film solar cell is disposed on the second substrate and is electrically coupled to the electrode layer. 如請求項1所述的觸控手寫板，更包括：一儲存單元，電性耦接該觸控顯示面板，且用於儲存該至少一觸控軌跡。 The touch tablet according to claim 1 further includes: a storage unit electrically coupled to the touch display panel and used for storing the at least one touch track. 如請求項1所述的觸控手寫板，其中該觸控消除模組具有一儲電元件，電性耦接該觸控顯示面板與該薄膜太陽能電池。 The touch tablet according to claim 1, wherein the touch cancellation module has a power storage element electrically coupled to the touch display panel and the thin film solar cell. 如請求項1所述的觸控手寫板，其中該觸控消除模組具有電性耦接該觸控顯示面板的一區域控制單元，該區域控制 單元用於定義該觸控顯示區內進行部分該至少一觸控軌跡消除步驟的一局部區域。 The touch tablet as described in claim 1, wherein the touch elimination module has an area control unit electrically coupled to the touch display panel, the area control The unit is used to define a local area in the touch display area for performing part of the at least one touch track erasing step. 如請求項1所述的觸控手寫板，其中該液晶層為一膽固醇型液晶層。 The touch tablet according to claim 1, wherein the liquid crystal layer is a cholesteric liquid crystal layer. 如請求項1所述的觸控手寫板，其中該薄膜太陽能電池設置在該觸控顯示面板的該顯示面上，該薄膜太陽能電池背離該顯示面的一側設有覆蓋該薄膜太陽能電池的一保護層。 The touch tablet as described in claim 1, wherein the thin film solar cell is arranged on the display surface of the touch display panel, and the side of the thin film solar cell facing away from the display surface is provided with a cover covering the thin film solar cell The protective layer. 如請求項1所述的觸控手寫板，其中該薄膜太陽能電池內嵌於該第二基板內。 The touch tablet according to claim 1, wherein the thin film solar cell is embedded in the second substrate. 如請求項1所述的觸控手寫板，其中該觸控顯示區具有一中央區域以及位於該中央區域四周的一周圍區域，該薄膜太陽能電池為多條太陽能電池走線，該些太陽能電池走線設置在該周圍區域內，且不重疊於該中央區域。 The touch tablet as described in claim 1, wherein the touch display area has a central area and a peripheral area located around the central area, the thin film solar cell is a plurality of solar cell lines, and the solar cell lines Lines are disposed within the surrounding area and do not overlap the central area.
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