TWI450139B - Touch-control device and hand-writing input system - Google Patents
Touch-control device and hand-writing input system Download PDFInfo
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Description
本發明涉及一種觸控裝置及應用該觸控裝置之手寫輸入系統。 The invention relates to a touch device and a handwriting input system using the touch device.
隨著社會之發展及科技之進步，介面更人性化、輸入更簡便之帶有觸摸屏之顯示器被廣泛地應用於個人電腦、移動電話、電視、攝影機、測量儀器等顯示器上，尤其係具有高畫質、空間利用效率高、低消耗功率、無輻射等優越特性之薄膜電晶體液晶顯示器(Thin Film Transistor Liquid Crystal Display，TFT LCD)已逐漸成為市場之主流。 With the development of society and the advancement of technology, the interface with more user-friendly and simpler input is widely used in personal computers, mobile phones, televisions, cameras, measuring instruments and other displays, especially with high painting. Thin Film Transistor Liquid Crystal Display (TFT LCD), which has superior properties such as high quality, low power consumption, and no radiation, has gradually become the mainstream of the market.
帶有觸摸屏之顯示器通常包括顯示面板及設置於顯示面板上方之觸控屏。觸摸屏根據所用之介質以及工作原理，可分為電阻式、電容式、紅外線式與表面聲波式多種。目前較為常用之為電阻式及電容式兩種，但其均需要在面板上設置多條交叉排列之感應線路，結構及製程較為複雜。另外，先前之手寫板也具有多條交叉排列之感應線路，結構及製程也較複雜。 A display with a touch screen typically includes a display panel and a touch screen disposed above the display panel. According to the medium used and the working principle, the touch screen can be divided into resistive, capacitive, infrared and surface acoustic wave types. At present, two types of resistive and capacitive types are commonly used, but all of them need to be provided with a plurality of cross-arranged sensing lines on the panel, and the structure and the process are complicated. In addition, the previous tablet also has a plurality of cross-arranged sensing lines, and the structure and process are also complicated.
有鑒於此，有必要提供一種結構及製程簡單之觸控裝置及手寫輸入系統。 In view of this, it is necessary to provide a touch device and a handwriting input system that are simple in structure and process.
一種觸控裝置，其包括一顯示面板、設置於該顯示面板之出光表 面之第一偏振片、一第一透明基板、液晶層及一影像攝取模組。該顯示面板發出之光經過該第一偏振片後形成一偏振光，該第一透明基板與該第一偏振片相對設置，該液晶層設置於該第一偏振片與該第一透明基板之間，該液晶層內液晶分子具有一預定配向方向。該影像攝取模組正對該第一透明基板且攝取範圍為該第一透明基板表面，該影像攝取模組具有一第二偏振片，該液晶層使得經過該第一偏振片之偏振光之偏振方向與該第二偏振片之偏振方向垂直。該影像攝取模組用於攝取一觸壓物觸壓第一透明基板表面時觸壓處出射之與該第二偏振片之偏振方向平行之光線。 A touch device includes a display panel and a light guide disposed on the display panel a first polarizing plate, a first transparent substrate, a liquid crystal layer and an image capturing module. The light emitted by the display panel passes through the first polarizing plate to form a polarized light. The first transparent substrate is disposed opposite to the first polarizing plate, and the liquid crystal layer is disposed between the first polarizing plate and the first transparent substrate. The liquid crystal molecules in the liquid crystal layer have a predetermined alignment direction. The image capturing module is facing the first transparent substrate and the pickup range is the surface of the first transparent substrate. The image capturing module has a second polarizing plate, and the liquid crystal layer causes polarization of polarized light passing through the first polarizing plate. The direction is perpendicular to the polarization direction of the second polarizer. The image capturing module is configured to ingest a light that is emitted from a contact point when the touch object touches the surface of the first transparent substrate and is parallel to a polarization direction of the second polarizing plate.
一種手寫輸入系統，其包括一上述之觸控裝置，及與該觸控裝置電連接之輸出裝置，該輸出裝置用於輸出該影像攝取模組攝取之該觸壓物之按壓劃動軌跡。 A handwriting input system includes the above-mentioned touch device and an output device electrically connected to the touch device, and the output device is configured to output a touch stroke track of the touch object taken by the image capture module.
所述之觸控裝置僅需在顯示面板附加一液晶層及一透明基板，在顯示面板之出光側設置一影像攝取裝置，無需設置交叉排列之複雜之感應線路，結構及製程均比較簡單。 The touch device only needs to add a liquid crystal layer and a transparent substrate to the display panel, and an image capturing device is disposed on the light emitting side of the display panel, and the complicated sensing circuit of the cross arrangement is not required, and the structure and the process are relatively simple.
所述之手寫輸入系統僅需在面光源表面附加一偏振片、一液晶層及一透明基板，在面光源之出光側設置一影像攝取裝置，無需設置交叉排列之複雜之感應線路，結構及製程均比較簡單。 The handwriting input system only needs to add a polarizing plate, a liquid crystal layer and a transparent substrate to the surface of the surface light source, and an image capturing device is disposed on the light emitting side of the surface light source, without complicated cross-arrangement of sensing lines, structure and process. They are relatively simple.
100、200、300、400、500‧‧‧觸控裝置 100, 200, 300, 400, 500‧‧‧ touch devices
12‧‧‧顯示面板 12‧‧‧ display panel
16‧‧‧影像攝取模組 16‧‧‧Image capture module
130‧‧‧第一偏振片 130‧‧‧First polarizer
168‧‧‧第二偏振片 168‧‧‧Second polarizer
130A、132A、168A‧‧‧偏振方向 130A, 132A, 168A‧‧‧ polarization direction
122‧‧‧第三透明基板 122‧‧‧ Third transparent substrate
120‧‧‧第四透明基板 120‧‧‧4th transparent substrate
142A、144A、242A、244A‧‧‧配向層 142A, 144A, 242A, 244A‧‧‧ Alignment layer
14‧‧‧第一液晶盒 14‧‧‧First LCD case
144‧‧‧第一透明基板 144‧‧‧First transparent substrate
142‧‧‧第二透明基板 142‧‧‧Second transparent substrate
124‧‧‧第一電極 124‧‧‧First electrode
126‧‧‧第二電極 126‧‧‧second electrode
128、146、246、346‧‧‧液晶層 128, 146, 246, 346‧‧‧ liquid crystal layer
134‧‧‧彩色濾光片 134‧‧‧Color filters
136‧‧‧背光模組 136‧‧‧Backlight module
162‧‧‧鏡筒 162‧‧‧Mirror tube
164‧‧‧鏡座 164‧‧‧ mirror base
166‧‧‧鏡片組 166‧‧‧ lens group
168‧‧‧第二偏振片 168‧‧‧Second polarizer
170‧‧‧圖像感測器 170‧‧‧Image Sensor
1442、1302‧‧‧表面 1442, 1302‧‧‧ surface
18‧‧‧觸按物 18‧‧‧Touch
24‧‧‧第二液晶盒 24‧‧‧Second liquid crystal cell
242‧‧‧第五透明基板 242‧‧‧ Fifth transparent substrate
244‧‧‧第六透明基板 244‧‧‧6th transparent substrate
52‧‧‧面光源 52‧‧‧ surface light source
54‧‧‧第四偏振片 54‧‧‧4th polarizer
34‧‧‧第三液晶盒 34‧‧‧ third liquid crystal cell
342‧‧‧第七透明基板 342‧‧‧ seventh transparent substrate
344‧‧‧第八透明基板 344‧‧‧ eighth transparent substrate
600‧‧‧手寫輸入系統 600‧‧‧Handwriting Input System
62‧‧‧輸出裝置 62‧‧‧ Output device
64‧‧‧裝置主體 64‧‧‧Device body
66‧‧‧顯示屏 66‧‧‧Display
68‧‧‧數據線 68‧‧‧Data line
圖1係本發明第一實施例觸控裝置之部分立體截面示意圖。 1 is a partial perspective cross-sectional view of a touch device according to a first embodiment of the present invention.
圖2係本發明圖1中之觸控裝置之截面示意圖。 2 is a schematic cross-sectional view of the touch device of FIG. 1 of the present invention.
圖3係一觸按物對圖1中之觸控裝置之表面按壓之示意圖。 FIG. 3 is a schematic view showing the surface of the touch device of FIG. 1 pressed by a touch object.
圖4係當觸按物按壓觸控裝置表面時液晶分子之排列受擾動時之 示意圖。 Figure 4 is when the alignment of the liquid crystal molecules is disturbed when the touch object presses the surface of the touch device schematic diagram.
圖5係本發明第二實施例之觸控裝置之立體示意圖。 FIG. 5 is a perspective view of a touch device according to a second embodiment of the present invention.
圖6係本發明第三實施例之觸控裝置之部分立體截面示意圖。 6 is a partial perspective cross-sectional view of a touch device according to a third embodiment of the present invention.
圖7係本發明第四實施例之觸控裝置之立體示意圖。 FIG. 7 is a perspective view of a touch device according to a fourth embodiment of the present invention.
圖8係本發明第五實施例之觸控裝置之立體示意圖。 FIG. 8 is a perspective view of a touch device according to a fifth embodiment of the present invention.
圖9係本發明第六實施例之手寫輸入系統之立體示意圖。 Figure 9 is a perspective view of a handwriting input system in accordance with a sixth embodiment of the present invention.
下面將結合附圖對本發明作進一步詳細說明。 The invention will now be described in further detail with reference to the accompanying drawings.
請參閱圖1及圖2，本發明第一實施例提供一種觸控裝置100，其包括一顯示面板12、一液晶盒14及一影像攝取模組16。 Referring to FIG. 1 and FIG. 2 , a first embodiment of the present invention provides a touch device 100 including a display panel 12 , a liquid crystal cell 14 , and an image capturing module 16 .
本實施中，該顯示面板12為一液晶顯示面板，其包括一第三透明基板122、一第四透明基板120、設置於第三透明基板122和第四透明基板120之間且分別與第三透明基板122和第四透明基板120相鄰設置之第一電極124和第二電極126，該第一電極124和第二電極126之間填充有液晶層128。本實施例中，該液晶層128為扭曲向列相(twisted nematic,TN)液晶。在第一電極124和第二電極126之與液晶層相鄰之表面分別形成有配向層(圖未示)，且兩個配向層配向方向相互垂直。本實施例中，第一電極124表面之配向層之配向方向為沿X軸方向，第二電極126表面之配向層之配向方向沿Y軸方向，靠近第一電極124和第二電極126之液晶分子分別沿第一電極124表面配向層和第二電極126表面配向層之配向方向排列，從而使液晶層128之液晶分子長軸方向沿X軸方向 自第一電極124至第二電極126連續扭轉90度，形成一TN型液晶層。 In this embodiment, the display panel 12 is a liquid crystal display panel, and includes a third transparent substrate 122, a fourth transparent substrate 120, and is disposed between the third transparent substrate 122 and the fourth transparent substrate 120 and respectively respectively. The first electrode 124 and the second electrode 126 are disposed adjacent to the transparent substrate 122 and the fourth transparent substrate 120, and the liquid crystal layer 128 is filled between the first electrode 124 and the second electrode 126. In this embodiment, the liquid crystal layer 128 is a twisted nematic (TN) liquid crystal. An alignment layer (not shown) is formed on a surface of the first electrode 124 and the second electrode 126 adjacent to the liquid crystal layer, and the alignment directions of the two alignment layers are perpendicular to each other. In this embodiment, the alignment direction of the alignment layer on the surface of the first electrode 124 is in the X-axis direction, and the alignment direction of the alignment layer on the surface of the second electrode 126 is in the Y-axis direction, and the liquid crystal is adjacent to the first electrode 124 and the second electrode 126. The molecules are respectively arranged along the alignment direction of the surface alignment layer of the first electrode 124 and the surface alignment layer of the second electrode 126, so that the long-axis direction of the liquid crystal molecules of the liquid crystal layer 128 is along the X-axis direction. The first electrode 124 to the second electrode 126 are continuously twisted by 90 degrees to form a TN type liquid crystal layer.
該顯示面板12進一步包括一第一偏振片130、第三偏振片132、一彩色濾光片134及一背光模組136，該第一偏振片130及第三偏振片132分別形成於第四透明基板120和第三透明基板122之外側表面。第一偏振片130之偏振方向與第三偏振片132之偏振方向相互垂直，本實施例中，以雙向箭頭線表示偏振片之偏振方向，第一偏振片130之偏振方向130A與X軸方向平行，第三偏振片132之偏振方向132A與Y軸方向平行。可以理解，第一偏振片130與第三偏振片132之偏振方向也可以相互平行，並不限於本實施例。該彩色濾光片134設置於第四透明基板120及第一電極124之間，用於使顯示面板12形成彩色顯示。該背光模組136設置於第三偏振片132之外側，用於提供顯示所需之光線。該顯示面板12用於顯示彩色圖像、視頻等，其顯示原理與常用之液晶顯示面板之顯示原理相同，這裏不再贅述。 The display panel 12 further includes a first polarizer 130, a third polarizer 132, a color filter 134, and a backlight module 136. The first polarizer 130 and the third polarizer 132 are respectively formed in the fourth transparent layer. The outer surface of the substrate 120 and the third transparent substrate 122. The polarization direction of the first polarizer 130 is perpendicular to the polarization direction of the third polarizer 132. In this embodiment, the polarization direction of the polarizer is indicated by a double-headed arrow line, and the polarization direction 130A of the first polarizer 130 is parallel to the X-axis direction. The polarization direction 132A of the third polarizer 132 is parallel to the Y-axis direction. It can be understood that the polarization directions of the first polarizing plate 130 and the third polarizing plate 132 may also be parallel to each other, and are not limited to the embodiment. The color filter 134 is disposed between the fourth transparent substrate 120 and the first electrode 124 for forming the display panel 12 in a color display. The backlight module 136 is disposed on the outer side of the third polarizing plate 132 for providing light required for display. The display panel 12 is used for displaying color images, videos, and the like, and the display principle thereof is the same as that of the conventional liquid crystal display panel, and details are not described herein again.
本實施例中，顯示面板12為TN型液晶顯示面板，可以理解，顯示面板12還可以為STN型液晶顯示面板、TFT型液晶顯示面板等。同樣可以理解，顯示面板12還可以為反射式液晶顯示面板或半穿透半反射式液晶顯示面板，並不限於本實施例之透射式液晶顯示面板。 In this embodiment, the display panel 12 is a TN-type liquid crystal display panel. It can be understood that the display panel 12 can also be an STN-type liquid crystal display panel, a TFT-type liquid crystal display panel, or the like. It can also be understood that the display panel 12 can also be a reflective liquid crystal display panel or a transflective liquid crystal display panel, and is not limited to the transmissive liquid crystal display panel of the embodiment.
該第一液晶盒14形成於第一偏振片130之外側面，第一液晶盒14包括一第二透明基板142、一第一透明基板144及設置於第二透明基板142與第一透明基板144之間之液晶層146。該第二透明基板142貼附於第一偏振片130之表面，第二透明基板142之內側形成 有配向層142A，本實施例中，配向層142A之配向方向與第一偏振片130之偏振方向130A平行。第一透明基板144之內側形成有配向層144A，且配向層144A之配向方向與配向層142A之配向方向相互垂直。本實施例中，該液晶層146為TN型液晶，即沿Z軸方向液晶層146之液晶分子之長軸方向自第二透明基板142向第一透明基板144連續扭轉90度。該第二、第一透明基板142、144與第四透明基板120及第三透明基板122可以為同種材料，如玻璃或塑膠材料等。 The first liquid crystal cell 14 is formed on the outer surface of the first polarizing plate 130. The first liquid crystal cell 14 includes a second transparent substrate 142, a first transparent substrate 144, and a second transparent substrate 142 and a first transparent substrate 144. The liquid crystal layer 146 is between. The second transparent substrate 142 is attached to the surface of the first polarizing plate 130, and the inner side of the second transparent substrate 142 is formed. There is an alignment layer 142A. In this embodiment, the alignment direction of the alignment layer 142A is parallel to the polarization direction 130A of the first polarizer 130. An alignment layer 144A is formed on the inner side of the first transparent substrate 144, and the alignment direction of the alignment layer 144A and the alignment direction of the alignment layer 142A are perpendicular to each other. In this embodiment, the liquid crystal layer 146 is a TN-type liquid crystal, that is, the long-axis direction of the liquid crystal molecules of the liquid crystal layer 146 along the Z-axis direction is continuously twisted by 90 degrees from the second transparent substrate 142 to the first transparent substrate 144. The second and first transparent substrates 142 and 144 and the fourth transparent substrate 120 and the third transparent substrate 122 may be of the same material, such as glass or plastic materials.
該影像攝取模組16包括一鏡筒162、一鏡座164、一鏡片組166、一第二偏振片168及一圖像感測器170。本實施例中，鏡筒162與鏡座164相互螺紋連接，鏡片組166收容於鏡筒162內。該圖像感測器170設置於鏡座164內，且與鏡片組166光學耦合。第二偏振片168收容於鏡筒162內且位於鏡片組166與圖像感測器170之間。鏡片組166與第一液晶盒14之第一透明基板144之表面正對，使得影像攝取模組16之攝取範圍為第一透明基板144之整個表面1442，第二偏振片168之偏振方向168A與第一偏振片130之偏振方向130A相互平行，即第二偏振片168之偏振方向168A與X軸方向平行。可以理解，該第二偏振片168之位置也可以位於鏡片組166之與圖像感測器170相背離之另一側，或位於鏡片組166內之鏡片之間，或位於鏡座164內。另外，該第二偏振片168還可以為形成於圖像感測器170或鏡片組166之某一鏡片表面之偏振膜層結構，並不限於本實施例。 The image capturing module 16 includes a lens barrel 162, a lens holder 164, a lens group 166, a second polarizing film 168, and an image sensor 170. In this embodiment, the lens barrel 162 and the lens holder 164 are screwed to each other, and the lens group 166 is received in the lens barrel 162. The image sensor 170 is disposed within the lens mount 164 and is optically coupled to the lens set 166. The second polarizer 168 is received in the lens barrel 162 and located between the lens group 166 and the image sensor 170. The lens group 166 is opposite to the surface of the first transparent substrate 144 of the first liquid crystal cell 14 such that the image capturing module 16 has an ingested range of the entire surface 1442 of the first transparent substrate 144, and the polarization direction 168A of the second polarizing plate 168 is The polarization directions 130A of the first polarizer 130 are parallel to each other, that is, the polarization direction 168A of the second polarizer 168 is parallel to the X-axis direction. It can be understood that the position of the second polarizer 168 can also be located on the other side of the lens set 166 that faces away from the image sensor 170, or between the lenses in the lens set 166, or within the lens mount 164. In addition, the second polarizing plate 168 may also be a polarizing film layer structure formed on one of the lens surfaces of the image sensor 170 or the lens group 166, and is not limited to the embodiment.
請一併參閱圖3及圖4，觸控裝置100之觸控原理如下：調整影像攝取裝置16之攝取範圍為整個第一透明基板144之表面 1442，並確定表面1442各處與影像攝取模組16之攝取範圍之間之座標位置關係。如通過一處理晶片將第一透明基板144之表面1442之四個角落處之已確認座標位置之點與影像攝取模組16之攝取範圍比較分析，以確定第一透明基板144之表面1442各點與影像攝取模組16之攝取範圍之座標位置關係。 Referring to FIG. 3 and FIG. 4 , the touch principle of the touch device 100 is as follows: adjusting the pickup range of the image capturing device 16 to the surface of the entire first transparent substrate 144 1442, and determining a coordinate positional relationship between the surface 1442 and the ingestion range of the image capturing module 16. The point of the confirmed coordinate position at the four corners of the surface 1442 of the first transparent substrate 144 is compared with the ingestion range of the image capturing module 16 by a processing wafer to determine the surface 1442 of the first transparent substrate 144. The coordinate position relationship with the ingestion range of the image capturing module 16.
此時，由於自顯示面板12之第一偏振片130出射之光線具有與X軸平行之偏振方向，而第一液晶盒14之液晶層146具有將光線之偏振方向旋轉90度之作用，因此，自第一透明基板144出射之光線之偏振方向與Y軸平行，即與影像攝取模組16內之第二偏振片168之偏振方向相垂直，因此，自第一透明基板144出射之光線被第二偏振片168所阻隔，不能被圖像感測器170所感測。 At this time, since the light emitted from the first polarizing plate 130 of the display panel 12 has a polarization direction parallel to the X axis, and the liquid crystal layer 146 of the first liquid crystal cell 14 has a function of rotating the polarization direction of the light by 90 degrees, The polarization direction of the light emitted from the first transparent substrate 144 is parallel to the Y axis, that is, perpendicular to the polarization direction of the second polarizing plate 168 in the image capturing module 16, and therefore, the light emitted from the first transparent substrate 144 is The two polarizers 168 are blocked from being sensed by the image sensor 170.
利用一觸按物18如一手寫筆觸按第一透明基板144之表面1442，此時，第一透明基板144被按壓之部分會發生變形，液晶層146對應於觸按物18所按壓之部分由於第一透明基板144之變形而擠壓液晶分子，使對應於觸按物18所按壓部分之液晶分子沿Z軸方向連續90度之排列被打亂，形成雜亂排列之液晶分子，因此，由第一透明基板144之表面1442被按壓部分出射之一部分光線之偏振方向與X軸方向平行，可以通過第二偏振片168而被圖像感測器170感測到，再根據第一透明基板144各點與影像攝取模組16之攝取範圍之座標位置關係加以分析，確認觸按物18按壓在第一透明基板144之表面1442之座標位置。 The surface 1442 of the first transparent substrate 144 is touched by a touch object 18 such as a stylus. At this time, the pressed portion of the first transparent substrate 144 is deformed, and the liquid crystal layer 146 corresponds to the portion pressed by the touch object 18 due to the The deformation of a transparent substrate 144 squeezes the liquid crystal molecules, so that the liquid crystal molecules corresponding to the pressed portion of the touch object 18 are disordered by 90 degrees in the Z-axis direction, thereby forming disorderly aligned liquid crystal molecules, and thus, by the first The surface 1442 of the transparent substrate 144 is polarized by the pressing portion to be parallel to the X-axis direction, and can be sensed by the image sensor 170 through the second polarizing plate 168, and then according to the first transparent substrate 144. The coordinate positional relationship with the ingestion range of the image capturing module 16 is analyzed to confirm that the touch object 18 is pressed against the coordinate position of the surface 1442 of the first transparent substrate 144.
由於第一液晶盒14貼附於顯示面板12之表面，因此第一透明基板144之表面1442可與顯示面板12之顯示表面相對應，即第一透明基板144之表面1442之座標位置可與顯示面板12之顯示表面之座 標位置一一對應，即影像攝取模組16可感測到觸按物18按壓處對應於顯示面板12之顯示表面之座標位置。 Since the first liquid crystal cell 14 is attached to the surface of the display panel 12, the surface 1442 of the first transparent substrate 144 can correspond to the display surface of the display panel 12, that is, the coordinate position of the surface 1442 of the first transparent substrate 144 can be displayed. The display surface of the panel 12 The image position module 16 can sense the coordinate position of the touch surface 18 corresponding to the display surface of the display panel 12.
可以理解，顯示面板12並不限於液晶面板，其還可以為其他形式之顯示面板，如發光二極體顯示面板，場發射顯示面板等，只需在其表面再附加一層偏振方向與第二偏振片168之偏振方向相平行之偏振片即可。 It can be understood that the display panel 12 is not limited to the liquid crystal panel, and may also be other types of display panels, such as a light emitting diode display panel, a field emission display panel, etc., and only need to add a polarization direction and a second polarization to the surface thereof. The polarizing plate of the sheet 168 whose polarization directions are parallel may be used.
本實施例之觸控裝置100之顯示側具有第一偏振片130，僅需在顯示面板12附加一第一液晶盒14及顯示面板12之一顯示側設置一偏振影像攝取模組16，無需設置交叉排列之複雜之感應線路，結構及製程均比較簡單。 The display side of the touch device 100 of the present embodiment has a first polarizing plate 130, and only one display of the first liquid crystal cell 14 and the display panel 12 is provided with a polarized image capturing module 16 on the display side of the display panel 12. The complex sensing lines, structures and processes that are arranged in a cross are relatively simple.
請參閱圖5，本發明第二實施例提供一種觸控裝置200。該觸控裝置200與第一實施例之觸控裝置100之結構相類似，不同之處在於，觸控裝置200省去了第一實施例之觸控裝置100之第三透明基板142，將原第三透明基板142表面之配向層形成在第一偏振片130之表面，將液晶層146填充於第一透明基板144與第一偏振片130之間。觸控裝置200之觸控原理與觸控裝置100之觸控原理相同，這裏不再贅述。 Referring to FIG. 5 , a second embodiment of the present invention provides a touch device 200 . The touch device 200 is similar to the structure of the touch device 100 of the first embodiment. The difference is that the touch device 200 eliminates the third transparent substrate 142 of the touch device 100 of the first embodiment. An alignment layer on the surface of the third transparent substrate 142 is formed on the surface of the first polarizing plate 130, and the liquid crystal layer 146 is filled between the first transparent substrate 144 and the first polarizing plate 130. The touch principle of the touch device 200 is the same as that of the touch device 100, and details are not described herein.
請參閱圖6，本發明第三實施例提供一種觸控裝置300。該觸控裝置300與第一實施例之觸控裝置100之結構相類似，不同之處在於，觸控裝置300包括一第二液晶盒24，該第二液晶盒24取代在第一實施例中第一液晶盒14之位置。 Referring to FIG. 6 , a third embodiment of the present invention provides a touch device 300 . The touch device 300 is similar in structure to the touch device 100 of the first embodiment, except that the touch device 300 includes a second liquid crystal cell 24, which is replaced in the first embodiment. The position of the first liquid crystal cell 14.
該第二液晶盒24包括一第五透明基板242、一第六透明基板244及設置於第五透明基板242與第六透明基板244之間之液晶層246， 其中第五透明基板242貼附該第一偏振片130，該第六透明基板244與影像攝取模組16相對。本實施例中，該液晶層246之液晶分子排列為平行型方式，即液晶層246內之液晶分子之長軸方向相互平行且與顯示面板12之第一偏振片130平行；另外，液晶層246內之液晶分子之長軸方向與該第一偏振片130之偏振方向130A相垂直。液晶層246內液晶分子排列之實現方式如下：該第五透明基板242和第六透明基板244之內表面分別形成配向方向與第一偏振片130之偏振方向相垂直之配向層242A和244A，在第五透明基板242和第六透明基板244之間填充液晶材料，可使液晶分子沿配向層242A和244A之方向排列，從而形成液晶層246。 The second liquid crystal cell 24 includes a fifth transparent substrate 242, a sixth transparent substrate 244, and a liquid crystal layer 246 disposed between the fifth transparent substrate 242 and the sixth transparent substrate 244. The fifth transparent substrate 242 is attached to the first polarizing plate 130 , and the sixth transparent substrate 244 is opposite to the image capturing module 16 . In this embodiment, the liquid crystal molecules of the liquid crystal layer 246 are arranged in a parallel manner, that is, the long-axis directions of the liquid crystal molecules in the liquid crystal layer 246 are parallel to each other and parallel to the first polarizing plate 130 of the display panel 12; in addition, the liquid crystal layer 246 The long axis direction of the liquid crystal molecules inside is perpendicular to the polarization direction 130A of the first polarizing plate 130. The arrangement of the liquid crystal molecules in the liquid crystal layer 246 is implemented as follows: the inner surfaces of the fifth transparent substrate 242 and the sixth transparent substrate 244 respectively form alignment layers 242A and 244A whose alignment directions are perpendicular to the polarization direction of the first polarizer 130, The liquid crystal material is filled between the fifth transparent substrate 242 and the sixth transparent substrate 244, so that liquid crystal molecules can be aligned in the direction of the alignment layers 242A and 244A, thereby forming the liquid crystal layer 246.
光線自該第一偏振片130出射後，形成偏振光，進入該第二液晶盒24，液晶層246可近似為一光軸方向與液晶分子長軸方向平行之單軸雙折射晶體，因此自該第一偏振片130出射之線偏振光經過第二液晶盒24後，形成一橢圓偏振光，該橢圓偏振光之長軸與短軸比值大於三，且長軸方向與該第一偏振片130之偏振方向垂直，因此，此橢圓偏振光可近似為一線偏振光，且偏振方向與該第一偏振片130之偏振方向130A垂直，即液晶層246近似將自第一偏振片130之偏振方向扭轉90度。本實施例觸控裝置300之觸控原理與第一實施例之觸控裝置100之觸控原理相似，這裏不再贅述。 After the light is emitted from the first polarizing plate 130, polarized light is formed and enters the second liquid crystal cell 24. The liquid crystal layer 246 can be approximately a uniaxial birefringent crystal whose optical axis direction is parallel to the long axis direction of the liquid crystal molecules. The linearly polarized light emitted from the first polarizing plate 130 passes through the second liquid crystal cell 24 to form an elliptically polarized light having a major axis to short axis ratio greater than three, and the long axis direction and the first polarizing plate 130 The polarization direction is vertical. Therefore, the elliptically polarized light can be approximately linearly polarized, and the polarization direction is perpendicular to the polarization direction 130A of the first polarizer 130, that is, the liquid crystal layer 246 is approximately twisted from the polarization direction of the first polarizer 130. degree. The touch principle of the touch device 300 of the present embodiment is similar to that of the touch device 100 of the first embodiment, and details are not described herein again.
請參閱圖7，本發明第四實施例提供一種觸控裝置400。該觸控裝置400與第一實施例之觸控裝置100之結構相類似，不同之處在於，觸控裝置400包括一第三液晶盒34，該第三液晶盒34取代第一實施例之第一液晶盒14之位置，且影像攝取模組16之第二偏振片 168之偏振方向168A與第一偏振片130之偏振方向130A相互垂直。 Referring to FIG. 7 , a fourth embodiment of the present invention provides a touch device 400 . The touch device 400 is similar in structure to the touch device 100 of the first embodiment, except that the touch device 400 includes a third liquid crystal cell 34, which replaces the first embodiment. a position of a liquid crystal cell 14 and a second polarizing film of the image capturing module 16 The polarization direction 168A of 168 is perpendicular to the polarization direction 130A of the first polarizer 130.
第三液晶盒34包括一第七透明基板342、一第八透明基板344及填充於第七透明基板342與第八透明基板344之間之液晶層346，其中第七透明基板342貼附該第一偏振片130，該第八透明基板344與影像攝取模組16相對。本實施例中，該第三液晶盒34內之液晶分子為垂直配向，即液晶分子之長軸方向基本垂直於第七透明基板342和第八透明基板344，其液晶分子之配向採用常用之垂直配向方式，這裏不再贅述。由於液晶層346內之液晶分子垂直配向，自第一偏振片130之線偏振光經過第三液晶盒34後，偏振方向不會發生改變，此時，因為第二偏振片168之偏振方向與第一偏振片130之偏振方向130A相互垂直，所以，自該第三液晶盒34出射之光線被該影像攝取模組16之第二偏振片168(如圖2所示)阻隔。當採用觸按物如一手寫筆第八透明基板344之表面觸按時，第八透明基板344發生變形，並使第三液晶盒34內觸按處之液晶分子受到擾動而發生液晶分子長軸方向發生改變，從而使自第三液晶盒34出射之光線之偏振方向發生改變，一部分偏振方向與第二偏振片168平行之光線出射後入射至影像攝取模組16，被圖像感測器170感測到。觸控裝置400之觸控原理與第一實施例之觸控裝置100相似，這裏不再贅述。 The third liquid crystal cell 34 includes a seventh transparent substrate 342, an eighth transparent substrate 344, and a liquid crystal layer 346 filled between the seventh transparent substrate 342 and the eighth transparent substrate 344. The seventh transparent substrate 342 is attached to the first liquid crystal layer 342. A polarizing plate 130, the eighth transparent substrate 344 is opposite to the image capturing module 16. In this embodiment, the liquid crystal molecules in the third liquid crystal cell 34 are vertically aligned, that is, the long axis direction of the liquid crystal molecules is substantially perpendicular to the seventh transparent substrate 342 and the eighth transparent substrate 344, and the alignment of the liquid crystal molecules is generally vertical. The alignment method will not be described here. Since the liquid crystal molecules in the liquid crystal layer 346 are vertically aligned, the polarization direction of the second polarizing film 130 does not change after passing through the third liquid crystal cell 34. At this time, because of the polarization direction of the second polarizing plate 168 The polarization direction 130A of a polarizing plate 130 is perpendicular to each other. Therefore, the light emitted from the third liquid crystal cell 34 is blocked by the second polarizing plate 168 (shown in FIG. 2) of the image capturing module 16. When the surface of the eighth transparent substrate 344 is touched by a touch object such as a stylus, the eighth transparent substrate 344 is deformed, and the liquid crystal molecules in the contact portion of the third liquid crystal cell 34 are disturbed to generate a long axis direction of the liquid crystal molecules. A change occurs, so that the polarization direction of the light emitted from the third liquid crystal cell 34 is changed, and a part of the light having a polarization direction parallel to the second polarizing plate 168 is emitted and then incident on the image capturing module 16 to be sensed by the image sensor 170. Measured. The touch principle of the touch device 400 is similar to that of the touch device 100 of the first embodiment, and details are not described herein again.
上述之液晶盒除了第一、三及四實施例項所述之形式之外，還可以為其他形式，如超扭曲向列相液晶盒(super twisted nematic,STN)等，只要通過觸按液晶盒表面可以造成出射光之偏振狀態變化並且該變化可被影像攝取模組16識別即可，並不以本實施例為限。 The above liquid crystal cell may have other forms besides the forms described in the first, third and fourth embodiments, such as a super twisted nematic (STN), etc., as long as the liquid crystal cell is touched. The surface may cause a change in the polarization state of the emitted light and the change may be recognized by the image capture module 16, and is not limited to this embodiment.
請參閱圖8，本發明第五實施例提供一種觸控裝置500。該觸控裝置500為一手寫板。該觸控裝置500包括一面光源52、一貼附於面光源52之第四偏振片54、一第一液晶盒14及一影像攝取模組16。第一液晶盒14貼附於第四偏振片54之表面，該影像攝取模組16正對該第一液晶盒14之第一透明基板144之表面設置，且第四偏振片54之偏振方向與影像攝取模組16內之第二偏振片168之偏振方向平行。 Referring to FIG. 8 , a fifth embodiment of the present invention provides a touch device 500 . The touch device 500 is a tablet. The touch device 500 includes a light source 52 , a fourth polarizer 54 attached to the surface light source 52 , a first liquid crystal cell 14 , and an image capturing module 16 . The first liquid crystal cell 14 is attached to the surface of the fourth polarizing film 54. The image capturing module 16 is disposed on the surface of the first transparent substrate 144 of the first liquid crystal cell 14, and the polarization direction of the fourth polarizing plate 54 is The polarization directions of the second polarizing plates 168 in the image capturing module 16 are parallel.
當面光源52啟動，一觸按物如一手寫筆在第一透明基板144之表面按預定軌跡劃動時，由第一實施例之觸控原理可知，影像攝取模組16可即時感測觸按物按壓之位置，當按照一預定頻率連續攝取觸按物之按壓位置，即可將觸按物之劃動軌跡記錄下來，將影像攝取模組16之攝取資訊通過一輸出裝置如液晶顯示器進行顯示，即可實現手寫輸入功能。 When the surface light source 52 is activated, and a touch object such as a stylus is swiped on the surface of the first transparent substrate 144 according to a predetermined trajectory, the touch sensing principle of the first embodiment can be used to instantly sense the touch object. Pressing the position, when the pressing position of the touch object is continuously taken at a predetermined frequency, the stroke of the touch object can be recorded, and the ingestion information of the image capturing module 16 is displayed through an output device such as a liquid crystal display. The handwriting input function can be realized.
可以理解，觸控裝置500中第一液晶盒14之第三透明基板142也可以省略，而將第三透明基板142表面之配向層形成於第四偏振片54之表面，使液晶層146填充於第一透明基板144與第四偏振片54所形成之收容空間內。同樣可以理解，本實施例之第一液晶盒14還可以被第三、四實施例之第二液晶盒24、第三液晶盒34或STN液晶盒等所取代，此時，第四偏振片54之偏振方向與第二偏振片168偏振方向之關係應相應改變。 It can be understood that the third transparent substrate 142 of the first liquid crystal cell 14 in the touch device 500 can also be omitted, and the alignment layer on the surface of the third transparent substrate 142 is formed on the surface of the fourth polarizing plate 54 to fill the liquid crystal layer 146. The first transparent substrate 144 and the fourth polarizing film 54 are formed in the housing space. It can also be understood that the first liquid crystal cell 14 of the present embodiment can also be replaced by the second liquid crystal cell 24, the third liquid crystal cell 34 or the STN liquid crystal cell of the third and fourth embodiments. At this time, the fourth polarizing plate 54 The relationship between the polarization direction and the polarization direction of the second polarizing plate 168 should be changed accordingly.
請參閱圖9，本發明第六實施例提供一種手寫輸入系統600。該手寫輸入系統600包括如第五實施例之觸控裝置500及一輸出裝置62。 Referring to FIG. 9, a sixth embodiment of the present invention provides a handwriting input system 600. The handwriting input system 600 includes a touch device 500 and an output device 62 as in the fifth embodiment.
該輸出裝置62為包括一裝置主體64及一顯示屏66，本實施例中， 該輸出裝置為一電腦，裝置主體64為一電腦主機。該裝置主體64通過數據線68與該影像攝取模組16電連接，將影像攝取模組16攝取之觸壓物之劃動軌跡輸出至顯示屏66上。該手寫輸入系統600還可以採用實施例一至四中之任意一個輸入裝置作為手寫板，不限於觸控裝置500。 The output device 62 includes a device body 64 and a display screen 66. In this embodiment, The output device is a computer, and the device body 64 is a computer host. The device body 64 is electrically connected to the image capturing module 16 via the data line 68, and outputs the tracking track of the touch object taken by the image capturing module 16 to the display screen 66. The handwriting input system 600 can also use any one of the embodiments 1 to 4 as a tablet, and is not limited to the touch device 500.
綜上所述，本發明確已符合發明專利之要件，遂依法提出專利申請。惟，以上所述者僅為本發明之較佳實施方式，自不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝之人士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下申請專利範圍內。 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.
100‧‧‧觸控裝置 100‧‧‧ touch device
12‧‧‧顯示面板 12‧‧‧ display panel
16‧‧‧影像攝取模組 16‧‧‧Image capture module
130‧‧‧第一偏振片 130‧‧‧First polarizer
132‧‧‧第二偏振片 132‧‧‧Second polarizer
130A、132A、168A‧‧‧偏振方向 130A, 132A, 168A‧‧‧ polarization direction
142‧‧‧第三透明基板 142‧‧‧ Third transparent substrate
144‧‧‧第四透明基板 144‧‧‧4th transparent substrate
142A、144A‧‧‧配向層 142A, 144A‧‧‧ Alignment layer
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|---|---|---|---|---|
| TWI493230B (en) * | 2013-01-30 | 2015-07-21 | Tera Xtal Technology Corp | A Polarization Conversion Mechanism and Method |
| TWI611326B (en) * | 2016-07-26 | 2018-01-11 | Interactive display and reading system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286424A (en) * | 1999-08-31 | 2001-03-07 | 大赛璐化学工业株式会社 | Touch screen and display device using said touch screen |
| US20030053020A1 (en) * | 2001-09-19 | 2003-03-20 | Hiroyuki Okada | Liquid crystal display device |
| US20040246434A1 (en) * | 2001-10-16 | 2004-12-09 | Mitsuo Ohashi | Liquid crystal display and its correcting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286424A (en) * | 1999-08-31 | 2001-03-07 | 大赛璐化学工业株式会社 | Touch screen and display device using said touch screen |
| EP1081633A2 (en) * | 1999-08-31 | 2001-03-07 | Daicel Chemical Industries, Ltd. | Touch panel and display device using the same |
| US20030053020A1 (en) * | 2001-09-19 | 2003-03-20 | Hiroyuki Okada | Liquid crystal display device |
| US20040246434A1 (en) * | 2001-10-16 | 2004-12-09 | Mitsuo Ohashi | Liquid crystal display and its correcting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI664565B (en) * | 2018-04-03 | 2019-07-01 | 元太科技工業股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201106217A (en) | 2011-02-16 |
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