TWI539202B - Liquid crystal display with touch panel - Google Patents
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本發明涉及一種液晶顯示屏，尤其涉及一種觸摸式液晶屏。 The present invention relates to a liquid crystal display, and more particularly to a touch type liquid crystal display.
液晶顯示因為低功耗、小型化及高品質的顯示效果，成為最佳的顯示方式之一。目前較為常用的液晶顯示屏為TN(扭曲向列相)模式的液晶顯示屏(TN-LCD)。對於TN-LCD，當電極上未施加電壓時，液晶顯示屏處於“OFF”狀態，光能透過液晶顯示屏呈通光狀態；當在電極上施加一定電壓時，液晶顯示屏處於“ON”態，液晶分子長軸方向沿電場方向排列，光不能透過液晶顯示屏，故呈遮光狀態。有選擇地在電極上施加電壓，可顯示出不同的圖案。 The liquid crystal display is one of the best display modes because of its low power consumption, miniaturization, and high-quality display. At present, the more commonly used liquid crystal display is a TN (Twisted Nematic) mode liquid crystal display (TN-LCD). For the TN-LCD, when no voltage is applied to the electrode, the liquid crystal display is in the "OFF" state, and the light energy is transmitted through the liquid crystal display; when a certain voltage is applied to the electrode, the liquid crystal display is in the "ON" state. The long axis direction of the liquid crystal molecules is arranged in the direction of the electric field, and the light cannot pass through the liquid crystal display, so that the light is blocked. Optionally applying a voltage across the electrodes reveals a different pattern.
近年來，伴隨著行動電話、觸摸導航系統、集成式電腦監視器及互動電視等各種電子設備的高性能化和多樣化的發展，在液晶顯示屏的顯示面安裝透光性的觸摸屏的電子設備逐漸增加。電子設備的使用者藉由觸摸屏，一邊對位於觸摸屏背面的液晶顯示屏的顯示內容進行視覺確認，一邊利用手指或筆等方式按壓觸摸屏來進行操作。由此，可操作使用該液晶顯示屏的電子設備的各種功能。所述觸摸屏可根據其工作原理和傳輸介質的不同，通常分為四種類型，分別為電阻式、電容感應式、紅外線式以及表面聲波 式。其中電容式觸摸屏結構簡單、成本低廉及耐用等優點被廣泛應用。 In recent years, with the development of high-performance and diversified electronic devices such as mobile phones, touch navigation systems, integrated computer monitors, and interactive TVs, electronic devices with translucent touch screens are mounted on the display surface of liquid crystal displays. gradually increase. The user of the electronic device visually confirms the display content of the liquid crystal display located on the back of the touch screen by the touch screen, and presses the touch screen to operate by using a finger or a pen. Thereby, various functions of the electronic device using the liquid crystal display can be operated. The touch screen can be generally divided into four types according to the working principle and the transmission medium, which are resistive, capacitive inductive, infrared, and surface acoustic waves. formula. Among them, the capacitive touch screen has the advantages of simple structure, low cost and durability.
然，將觸摸屏集成在液晶顯示屏中必然會增加液晶顯示屏的厚度，不利於液晶顯示屏及應用液晶顯示屏的電子設備的小型化和薄型化的發展。 However, integrating the touch screen into the liquid crystal display will inevitably increase the thickness of the liquid crystal display, which is disadvantageous for the miniaturization and thinning of the liquid crystal display and the electronic device using the liquid crystal display.
有鑒於此，提供一種具有較薄厚度的觸摸式液晶屏實為必要。 In view of this, it is necessary to provide a touch type liquid crystal panel having a thin thickness.
一種觸摸式液晶屏，其包括：一觸摸屏以及一液晶顯示屏，所述觸摸屏包括：一公共基板；一第一透明導電層，具導電異向性，該第一透明導電層設置於該公共基板的上表面；複數相互間隔的第一電極，該複數第一電極沿第一方向排列設置於該第一透明導電層的一側，並與該第一透明導電層電連接；一第二透明導電層，具導電異向性，該第二透明導電層設置於該公共基板的下表面；以及複數相互間隔的第二電極，該複數第二電極沿第二方向排列設置於該第二透明導電層的一側，並與該第二透明導電層電連接；其中，該第一透明導電層在第二方向的電導率大於在其他方向的電導率，該第二透明導電層在第一方向的電導率大於在其他方向的電導率，所述液晶顯示屏從上至下依次包括：一上基板；一上電極；一第一偏光層；一第一配向層；一液晶層；一第二配向層；一薄膜電晶體面板；以及一第二偏光層，其中，所述上基板為所述觸摸屏的公共基板，所述上電極為所述觸摸屏的第二透明導電層。 A touch screen LCD, comprising: a touch screen and a liquid crystal display, the touch screen comprising: a common substrate; a first transparent conductive layer having conductive anisotropy, the first transparent conductive layer being disposed on the common substrate a plurality of first electrodes spaced apart from each other, the plurality of first electrodes being arranged in a first direction on one side of the first transparent conductive layer and electrically connected to the first transparent conductive layer; a second transparent conductive a layer having conductive anisotropy, the second transparent conductive layer being disposed on a lower surface of the common substrate; and a plurality of second electrodes spaced apart from each other, the plurality of second electrodes being arranged in the second direction on the second transparent conductive layer One side of the first transparent conductive layer is electrically connected to the second transparent conductive layer; wherein the conductivity of the first transparent conductive layer in the second direction is greater than the conductivity in the other direction, and the conductance of the second transparent conductive layer in the first direction The ratio is greater than the conductivity in other directions. The liquid crystal display includes, in order from top to bottom, an upper substrate, an upper electrode, a first polarizing layer, a first alignment layer, and a liquid crystal layer. Two alignment layer; a thin film transistor panel; and a second polarizing layer, wherein the upper substrate is a common substrate of the touch screen, the upper electrode of the touch screen of the second transparent conductive layer.
一種觸摸式液晶屏，其從上至下依次包括：一觸摸屏；一第一偏 光層；一第一配向層；一液晶層；一第二配向層；一薄膜電晶體面板；以及一第二偏光層，其中，所述觸摸屏進一步包括：一公共基板；一第一透明導電層，具導電異向性，該透明導電層設置於該公共基板的上表面；複數相互間隔的第一電極，該複數第一電極沿第一方向排列設置於該第一透明導電層的一側，並與該第一透明導電層電連接；一第二透明導電層，具導電異向性，該第二透明導電層設置於該公共基板的下表面，所述第一偏光層設置於所述第二透明導電層的下表面；以及複數相互間隔的第二電極，該複數第二電極沿第二方向排列設置於該第二透明導電層的一側，並與該第二透明導電層電連接；其中，該第一透明導電層在第二方向的導電率大於在其他方向的導電率，該第二透明導電層在第一方向的導電率大於在其他方向的導電率。 A touch type liquid crystal screen, which includes, in order from top to bottom, a touch screen; a first partial a first alignment layer; a liquid crystal layer; a second alignment layer; a thin film transistor panel; and a second polarizing layer, wherein the touch screen further comprises: a common substrate; a first transparent conductive layer Conductive anisotropy, the transparent conductive layer is disposed on the upper surface of the common substrate; the plurality of first electrodes are spaced apart from each other, and the plurality of first electrodes are arranged on one side of the first transparent conductive layer along the first direction, And electrically connected to the first transparent conductive layer; a second transparent conductive layer having a conductive anisotropy, the second transparent conductive layer being disposed on a lower surface of the common substrate, wherein the first polarizing layer is disposed on the first a second transparent conductive layer; and a plurality of second electrodes spaced apart from each other, the plurality of second electrodes are arranged in a second direction on one side of the second transparent conductive layer, and electrically connected to the second transparent conductive layer; The conductivity of the first transparent conductive layer in the second direction is greater than the conductivity in the other direction, and the conductivity of the second transparent conductive layer in the first direction is greater than the conductivity in the other direction.
相較於先前技術，所述觸摸式液晶屏中的觸摸屏與液晶顯示屏共用公共基板，故具有較薄的厚度和簡單的結構，簡化了製造工藝，降低了製造成本，提高背光源的利用率，改善顯示品質。 Compared with the prior art, the touch screen in the touch liquid crystal screen shares a common substrate with the liquid crystal display screen, so the thinner thickness and simple structure simplify the manufacturing process, reduce the manufacturing cost, and improve the utilization rate of the backlight. Improve display quality.
10‧‧‧觸摸式液晶屏 10‧‧‧Touch LCD screen
102‧‧‧第一透明導電層 102‧‧‧First transparent conductive layer
104‧‧‧第二透明導電層 104‧‧‧Second transparent conductive layer
106‧‧‧第一電極 106‧‧‧First electrode
108‧‧‧第二電極 108‧‧‧second electrode
110‧‧‧公共基板 110‧‧‧Common substrate
112‧‧‧第一配向層 112‧‧‧First alignment layer
114‧‧‧第一偏光層 114‧‧‧First polarizing layer
130‧‧‧液晶層 130‧‧‧Liquid layer
122‧‧‧第二配向層 122‧‧‧Second alignment layer
120‧‧‧薄膜電晶體面板 120‧‧‧Thin-film transistor panel
124‧‧‧第二偏光層 124‧‧‧Second polarizing layer
140‧‧‧透明保護膜 140‧‧‧Transparent protective film
143‧‧‧奈米碳管片段 143‧‧‧Nano carbon nanotube fragments
145‧‧‧奈米碳管 145‧‧・Nano carbon tube
150‧‧‧觸摸感應區域 150‧‧‧Touch sensing area
圖1是本技術方案實施例觸摸式液晶屏的剖視結構示意圖。 1 is a cross-sectional structural view of a touch liquid crystal panel according to an embodiment of the present technical solution.
圖2是本技術方案實施例觸摸式液晶屏中上基板的俯視示意圖。 2 is a top plan view of an upper substrate in a touch type liquid crystal panel according to an embodiment of the present technical solution.
圖3是本技術方案實施例觸摸式液晶屏中奈米碳管拉膜的掃描電鏡照片。 3 is a scanning electron micrograph of a carbon nanotube film in a touch liquid crystal panel according to an embodiment of the present technology.
圖4是圖3的奈米碳管拉膜中奈米碳管片段的結構示意圖。 4 is a schematic view showing the structure of a carbon nanotube segment in the carbon nanotube film of FIG.
以下將結合附圖詳細說明本技術方案的觸摸式液晶屏。 The touch liquid crystal panel of the present technical solution will be described in detail below with reference to the accompanying drawings.
請參閱圖1並結合圖2，本技術方案實施例提供一種觸摸式液晶屏10，其包括一多點電容式觸摸屏以及一與該觸摸屏共用基板的液晶顯示屏。 Referring to FIG. 1 and FIG. 2 , the embodiment of the present disclosure provides a touch-type liquid crystal panel 10 including a multi-point capacitive touch screen and a liquid crystal display screen sharing the substrate with the touch screen.
該多點電容式觸摸屏包括一公共基板110，一具導電異向性的第一透明導電層102，複數第一電極106，一具導電異向性的第二透明導電層104以及複數第二電極108。該第一透明導電層設置於該公共基板110的上表面，該第二透明導電層設置於該公共基板110的下表面。定義“上”為靠近觸控表面的方向，“下”為遠離觸控表面的方向。在該第一透明導電層102的一側週邊上，該複數第一電極106沿第一方向如X方向設置並相互間隔，並與該第一透明導電層102電連接。在該第二透明導電層104的一側週邊上，該複數第二電極108沿第二方向如Y方向設置並相互間隔，並與該第二透明導電層104電連接。優選地，該第一方向與第二方向垂直。可以理解，該第一方向與第二方向不限於垂直，只需具有一交叉角度即可。定義垂直於所述公共基板110上表面的方向為第三方向如Z方向，該第三方向與第一方向及第二方向垂直。該第一透明導電層102與第二透明導電層104在第三方向上重合形成一觸摸感應區域150。該第一透明導電層102與第二透明導電層104均具有較好的透光度。 The multi-point capacitive touch screen includes a common substrate 110, a conductive transparent anisotropic first transparent conductive layer 102, a plurality of first electrodes 106, a conductive anisotropic second transparent conductive layer 104, and a plurality of second electrodes. 108. The first transparent conductive layer is disposed on an upper surface of the common substrate 110, and the second transparent conductive layer is disposed on a lower surface of the common substrate 110. The definition "up" is the direction close to the touch surface, and the "down" is the direction away from the touch surface. On a side of one side of the first transparent conductive layer 102, the plurality of first electrodes 106 are disposed along the first direction, such as the X direction, and are spaced apart from each other, and are electrically connected to the first transparent conductive layer 102. On a side of one side of the second transparent conductive layer 104, the plurality of second electrodes 108 are disposed along the second direction, such as the Y direction, and spaced apart from each other, and are electrically connected to the second transparent conductive layer 104. Preferably, the first direction is perpendicular to the second direction. It can be understood that the first direction and the second direction are not limited to being vertical, and only need to have an intersection angle. The direction perpendicular to the upper surface of the common substrate 110 is defined as a third direction such as a Z direction, which is perpendicular to the first direction and the second direction. The first transparent conductive layer 102 and the second transparent conductive layer 104 overlap in a third direction to form a touch sensing area 150. Both the first transparent conductive layer 102 and the second transparent conductive layer 104 have good transmittance.
該液晶顯示屏與該觸摸屏共用所述公共基板110及所述第二透明導電層104，並從上至下進一步包括一第一偏光層114，一第一配向層112，一液晶層130，一第二配向層122，一薄膜電晶體面板 120以及一第二偏光層124。 The liquid crystal display screen shares the common substrate 110 and the second transparent conductive layer 104 with the touch screen, and further includes a first polarizing layer 114, a first alignment layer 112, and a liquid crystal layer 130, from top to bottom. Second alignment layer 122, a thin film transistor panel 120 and a second polarizing layer 124.
該第一偏光層114設置於所述第二透明導電層104的下表面。該第一配向層112設置於該第一偏光層114下表面。該第二配向層122設置於所述薄膜電晶體面板120上表面並與該第一配向層112相對。該液晶層130設置於該第一配向層112與該第二配向層122之間。該第二偏光層124設置於所述薄膜電晶體面板120下表面。可以理解，根據各種功能的需求，前述各層之間還可選擇性地***額外的其他層。 The first polarizing layer 114 is disposed on a lower surface of the second transparent conductive layer 104. The first alignment layer 112 is disposed on a lower surface of the first polarizing layer 114. The second alignment layer 122 is disposed on the upper surface of the thin film transistor panel 120 and opposite to the first alignment layer 112. The liquid crystal layer 130 is disposed between the first alignment layer 112 and the second alignment layer 122. The second polarizing layer 124 is disposed on a lower surface of the thin film transistor panel 120. It will be appreciated that additional layers may be selectively inserted between the aforementioned layers depending on the requirements of the various functions.
該公共基板110既是所述觸摸屏的基板，又是所述液晶顯示屏的上基板。該第二透明導電層104既是所述觸摸屏中的一個透明導電層，起到感應觸摸位置的作用，又是所述液晶顯示屏的上電極，起到給液晶層130施加配向電壓的作用。因此，所述觸摸式液晶屏10具有較薄的厚度和簡單的結構，簡化了製造工藝，降低了製造成本，提高背光源的利用率，改善顯示品質。 The common substrate 110 is both a substrate of the touch screen and an upper substrate of the liquid crystal display. The second transparent conductive layer 104 is not only a transparent conductive layer in the touch screen, but also functions as an inductive touch position, and is also an upper electrode of the liquid crystal display, and functions to apply an alignment voltage to the liquid crystal layer 130. Therefore, the touch type liquid crystal panel 10 has a thin thickness and a simple structure, simplifies the manufacturing process, reduces the manufacturing cost, improves the utilization ratio of the backlight, and improves the display quality.
可以理解，該液晶顯示屏的具體結構並不限於前述第一實施例的結構，只要該液晶顯示屏與所述觸摸屏共用所述公共基板110及第二透明導電層104即在本發明保護範圍內。 It is to be understood that the specific structure of the liquid crystal display is not limited to the structure of the foregoing first embodiment, as long as the liquid crystal display and the touch screen share the common substrate 110 and the second transparent conductive layer 104 within the protection scope of the present invention. .
具體地，該第一透明導電層102可為一第一奈米碳管層，該第二透明導電層104可為一第二奈米碳管層。 Specifically, the first transparent conductive layer 102 can be a first carbon nanotube layer, and the second transparent conductive layer 104 can be a second carbon nanotube layer.
在所述觸摸屏中，該第一奈米碳管層及第二奈米碳管層均為一導電異向性膜，且均包括複數奈米碳管。該第一奈米碳管層中的奈米碳管均基本沿第二方向擇優取向延伸。該第二奈米碳管層中的 奈米碳管均基本沿第一方向擇優取向延伸。從而使該第一奈米碳管層在第二方向的電導率大於在其他方向的電導率，該第二奈米碳管層在第一方向的電導率大於在其他方向的電導率。優選地，該第一奈米碳管層及第二奈米碳管層為由奈米碳管組成的純奈米碳管層，從而能夠提高觸摸屏的透光度。 In the touch screen, the first carbon nanotube layer and the second carbon nanotube layer are both an electrically conductive anisotropic film, and each comprises a plurality of carbon nanotubes. The carbon nanotubes in the first carbon nanotube layer all extend in a preferred orientation along the second direction. In the second carbon nanotube layer The carbon nanotubes all extend in a preferred orientation along the first direction. Thereby, the conductivity of the first carbon nanotube layer in the second direction is greater than the conductivity in the other direction, and the conductivity of the second carbon nanotube layer in the first direction is greater than the conductivity in the other direction. Preferably, the first carbon nanotube layer and the second carbon nanotube layer are pure carbon nanotube layers composed of carbon nanotubes, thereby improving the transmittance of the touch screen.
為實現該第一奈米碳管層與該第二奈米碳管層的導電異向性，優選地，該第一奈米碳管層與該第二奈米碳管層可分別包括一個或複數奈米碳管拉膜。該奈米碳管拉膜是從一奈米碳管陣列中拉取獲得。 In order to achieve the conductive anisotropy of the first carbon nanotube layer and the second carbon nanotube layer, preferably, the first carbon nanotube layer and the second carbon nanotube layer may respectively include one or Multiple carbon nanotubes are pulled. The carbon nanotube film is drawn from an array of carbon nanotubes.
請參閱圖3，所述奈米碳管拉膜是由若干奈米碳管組成的自支撐結構。所述若干奈米碳管為沿同一方向擇優取向延伸。所述擇優取向是指在奈米碳管拉膜中大多數奈米碳管的整體延伸方向基本朝同一方向。而且，所述大多數奈米碳管的整體延伸方向基本平行於奈米碳管拉膜的表面。進一步地，所述奈米碳管拉膜中多數奈米碳管係藉由凡德瓦力首尾相連。具體地，所述奈米碳管拉膜中基本朝同一方向延伸的大多數奈米碳管中每一奈米碳管與在延伸方向上相鄰的奈米碳管藉由凡德瓦力首尾相連。當然，所述奈米碳管拉膜中存在少數隨機排列的奈米碳管，該等奈米碳管不會對奈米碳管拉膜中大多數奈米碳管的整體取向排列構成明顯影響。所述自支撐為奈米碳管拉膜不需要大面積的載體支撐，而只要相對兩邊提供支撐力即能整體上懸空而保持自身膜狀狀態，即將該奈米碳管拉膜置於(或固定於)間隔一定距離設置的兩個支撐體上時，位於兩個支撐體之間的奈米碳管拉膜能夠懸空保持自身 膜狀狀態。所述自支撐主要藉由奈米碳管拉膜中存在連續的藉由凡德瓦力首尾相連延伸排列的奈米碳管而實現。 Referring to FIG. 3, the carbon nanotube film is a self-supporting structure composed of a plurality of carbon nanotubes. The plurality of carbon nanotubes extend in a preferred orientation along the same direction. The preferred orientation means that the overall extension direction of most of the carbon nanotubes in the carbon nanotube film is substantially in the same direction. Moreover, the overall extension direction of the majority of the carbon nanotubes is substantially parallel to the surface of the carbon nanotube film. Further, most of the carbon nanotubes in the carbon nanotube film are connected end to end by van der Waals force. Specifically, each of the carbon nanotubes in the majority of the carbon nanotubes extending in the same direction in the carbon nanotube film and the carbon nanotubes adjacent in the extending direction are end to end by van der Waals force Connected. Of course, there are a small number of randomly arranged carbon nanotubes in the carbon nanotube film, and the carbon nanotubes do not significantly affect the overall orientation of most of the carbon nanotubes in the carbon nanotube film. . The self-supporting carbon nanotube film does not require a large-area carrier support, and as long as the support force is provided on both sides, it can be suspended in the whole to maintain its own film state, that is, the carbon nanotube film is placed (or When fixed on two supports arranged at a certain distance, the carbon nanotube film between the two supports can be suspended to maintain itself Membrane state. The self-supporting is mainly achieved by the presence of continuous carbon nanotubes arranged in an end-to-end manner by van der Waals force in the carbon nanotube film.
具體地，所述奈米碳管拉膜中基本朝同一方向延伸的多數奈米碳管，並非絕對的直線狀，可適當的彎曲；或者並非完全按照延伸方向上排列，可適當的偏離延伸方向。因此，不能排除奈米碳管拉膜的基本朝同一方向延伸的多數奈米碳管中並列的奈米碳管之間可能存在部分接觸。 Specifically, the plurality of carbon nanotubes extending substantially in the same direction in the carbon nanotube film are not absolutely linear and may be appropriately bent; or are not completely aligned in the extending direction, and may be appropriately deviated from the extending direction. . Therefore, it is not possible to exclude partial contact between the carbon nanotubes juxtaposed in the majority of the carbon nanotubes extending substantially in the same direction of the carbon nanotube film.
請參閱圖4，具體地，所述奈米碳管拉膜包括複數連續且定向排列的奈米碳管片段143。該複數奈米碳管片段143藉由凡德瓦力首尾相連。每一奈米碳管片段143包括複數相互平行的奈米碳管145，該複數相互平行的奈米碳管145藉由凡德瓦力緊密結合。該奈米碳管片段143具有任意的長度、厚度、均勻性及形狀。該奈米碳管拉膜中的奈米碳管145沿同一方向擇優取向排列。 Referring to FIG. 4, in particular, the carbon nanotube film comprises a plurality of continuous and aligned carbon nanotube segments 143. The plurality of carbon nanotube segments 143 are connected end to end by Van der Waals force. Each of the carbon nanotube segments 143 includes a plurality of carbon nanotubes 145 that are parallel to each other, and the plurality of parallel carbon nanotubes 145 are tightly coupled by van der Waals force. The carbon nanotube segments 143 have any length, thickness, uniformity, and shape. The carbon nanotubes 145 in the carbon nanotube film are arranged in a preferred orientation in the same direction.
從奈米碳管陣列中拉取獲得所述奈米碳管拉膜的具體方法包括：(a)從所述奈米碳管陣列中選定一奈米碳管片段143，本實施例優選為採用具有一定寬度的膠帶或黏性基條接觸該奈米碳管陣列以選定具有一定寬度的一奈米碳管片段143；(b)藉由移動該拉伸工具，以一定速度拉取該選定的奈米碳管片段143，從而首尾相連的拉出複數奈米碳管片段143，進而形成一連續的奈米碳管拉膜。該複數奈米碳管相互併排使該奈米碳管片段143具有一定寬度。當該被選定的奈米碳管片段143在拉力作用下沿拉取方向逐漸脫離奈米碳管陣列的生長基底的同時，由於凡德瓦力作用，與該選定的奈米碳管片段143相鄰的其他奈米碳管片段143首尾相 連地相繼地被拉出，從而形成一連續、均勻且具有一定寬度和擇優取向的奈米碳管拉膜。 A specific method for extracting the carbon nanotube film from the carbon nanotube array includes: (a) selecting a carbon nanotube segment 143 from the carbon nanotube array, which is preferably employed in this embodiment. a tape or viscous strip having a width contacting the array of carbon nanotubes to select a carbon nanotube segment 143 having a width; (b) pulling the selected piece at a certain speed by moving the stretching tool The carbon nanotube segment 143, thereby pulling the plurality of carbon nanotube segments 143 end to end, forms a continuous carbon nanotube film. The plurality of carbon nanotubes are arranged side by side such that the carbon nanotube segments 143 have a certain width. When the selected carbon nanotube segment 143 is gradually separated from the growth substrate of the carbon nanotube array in the pulling direction under the pulling force, the selected carbon nanotube segment 143 is phased due to the van der Waals force. Neighboring other carbon nanotube fragments 143 The ground is successively pulled out to form a continuous, uniform carbon nanotube film having a certain width and a preferred orientation.
所述奈米碳管拉膜在拉伸方向具有最小的電阻抗，而在垂直於拉伸方向具有最大電阻抗，故具備電阻抗異向性，即導電異向性。 The carbon nanotube film has a minimum electrical resistance in the tensile direction and a maximum electrical resistance in a direction perpendicular to the stretching direction, so that it has an electrical anisotropy, that is, an anisotropic conductivity.
當該第一奈米碳管層包括複數所述奈米碳管拉膜時，可將該複數奈米碳管拉膜沿第二方向併排或層疊設置，從而使該複數奈米碳管拉膜中的奈米碳管基本沿第二方向擇優取向排列。當該第二奈米碳管層包括複數所述奈米碳管拉膜時，可將該複數奈米碳管拉膜沿第一方向併排或層疊設置，從而使該複數奈米碳管拉膜中的奈米碳管基本沿第一方向擇優取向排列。由於該複數奈米碳管拉膜可相互層疊或併排設置，故，前述第一奈米碳管層與第二奈米碳管層的長度和寬度不限，可根據實際需要設置。另，該奈米碳管拉膜具有一理想的透光度(單層奈米碳管拉膜的可見光透過率大於85%)，該第一奈米碳管層與第二奈米碳管層中奈米碳管拉膜的層數不限，只要能夠具有理想的透光度即可。 When the first carbon nanotube layer comprises a plurality of the carbon nanotube film, the plurality of carbon nanotube film may be arranged side by side or stacked in the second direction, thereby pulling the plurality of carbon nanotubes The carbon nanotubes in the middle are arranged in a preferred orientation along the second direction. When the second carbon nanotube layer comprises a plurality of the carbon nanotube film, the plurality of carbon nanotube film may be arranged side by side or stacked in the first direction, thereby pulling the plurality of carbon nanotubes The carbon nanotubes in the middle are arranged in a preferred orientation along the first direction. Since the plurality of carbon nanotube film can be stacked on each other or arranged side by side, the length and width of the first carbon nanotube layer and the second carbon nanotube layer are not limited, and can be set according to actual needs. In addition, the carbon nanotube film has an ideal transmittance (the visible light transmittance of the single-layer carbon nanotube film is more than 85%), the first carbon nanotube layer and the second carbon nanotube layer The number of layers of the medium carbon nanotube film is not limited as long as it has an ideal light transmittance.
進一步地，所述第一奈米碳管層與第二奈米碳管層可包括所述奈米碳管拉膜與一高分子材料組成的複合膜。所述高分子材料均勻分佈於所述奈米碳管拉膜中奈米碳管之間的間隙中。所述高分子材料為一透明高分子材料，其具體材料不限，包括聚苯乙烯、聚乙烯、聚碳酸酯、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)、對苯二甲酸乙二醇酯(PET)、苯丙環丁烯(BCB)、聚環烯烴等。如，所述第一奈米碳管層與第二奈米碳管層各為一層奈米碳管拉膜與PMMA組成的複合薄膜。所述奈米碳管複合薄膜的厚度為 0.5奈米~100微米。 Further, the first carbon nanotube layer and the second carbon nanotube layer may include a composite film composed of the carbon nanotube film and a polymer material. The polymer material is uniformly distributed in a gap between the carbon nanotubes in the carbon nanotube film. The polymer material is a transparent polymer material, and the specific material thereof is not limited, and includes polystyrene, polyethylene, polycarbonate, polymethyl methacrylate (PMMA), polycarbonate (PC), and terephthalic acid. Ethylene glycolate (PET), phenylcyclobutene (BCB), polycycloolefin, and the like. For example, the first carbon nanotube layer and the second carbon nanotube layer are each a composite film composed of a carbon nanotube film and a PMMA. The thickness of the carbon nanotube composite film is 0.5 nm ~ 100 microns.
進一步地，所述第一奈米碳管層與第二奈米碳管層可包括經過蝕刻或雷射處理的奈米碳管拉膜。藉由雷射處理，可在該奈米碳管拉膜表面形成複數雷射切割線，從而進一步分別增強第一奈米碳管層與第二奈米碳管層的導電異向性。具體地，所述第一奈米碳管層的表面可具有複數沿第二方向的雷射切割線，所述第二奈米碳管層的表面可具有複數沿第一方向的雷射切割線。 Further, the first carbon nanotube layer and the second carbon nanotube layer may include an etched or laser treated carbon nanotube film. By laser treatment, a plurality of laser cutting lines can be formed on the surface of the carbon nanotube film to further enhance the conductive anisotropy of the first carbon nanotube layer and the second carbon nanotube layer, respectively. Specifically, the surface of the first carbon nanotube layer may have a plurality of laser cutting lines along a second direction, and the surface of the second carbon nanotube layer may have a plurality of laser cutting lines along the first direction .
可以理解，所述第一奈米碳管層與第二奈米碳管層還可採用其他具有導電異向性的奈米碳管透明導電膜，只需確保所述奈米碳管透明導電膜在一個方向的導電率大於在其他方向的導電率即可。所有具有導電異向性的透明導電層都應在本發明保護範圍內。 It can be understood that the first carbon nanotube layer and the second carbon nanotube layer can also adopt other carbon nanotube transparent conductive films with conductive anisotropy, and only need to ensure the transparent conductive film of the carbon nanotubes. The conductivity in one direction is greater than the conductivity in the other direction. All transparent conductive layers having conductive anisotropy are within the scope of the present invention.
所述公共基板110為透明的薄板，公共基板110的材料可為玻璃、石英、金剛石、塑膠或樹脂。該公共基板110的厚度為1毫米~1厘米。本實施例中，該公共基板110的材料為PET，厚度為2毫米。可以理解，形成所述公共基板110的材料並不限於前述列舉的材料，只要能起到支撐的作用，並具有較好的透明度的材料，都在本發明保護的範圍內。 The common substrate 110 is a transparent thin plate, and the material of the common substrate 110 may be glass, quartz, diamond, plastic or resin. The common substrate 110 has a thickness of 1 mm to 1 cm. In this embodiment, the material of the common substrate 110 is PET and has a thickness of 2 mm. It is to be understood that the material forming the common substrate 110 is not limited to the materials listed above, and any material that can serve as a support and has a good transparency is within the scope of the present invention.
所述觸摸屏的複數第一電極106與複數第二電極108由導電材料形成，具體可選擇為金屬層、導電聚合物層或奈米碳管層。所述金屬層的材料可選擇為金、銀或銅等導電性好的金屬。所述導電聚合物層的材料可選擇為聚乙炔、聚對苯撐、聚苯胺、聚咪吩、聚毗咯、聚噻吩等。本實施例中，該複數第一電極106與複數第二 電極108為藉由絲網印刷分別形成在所述公共基板110上下表面的導電銀漿條。 The plurality of first electrodes 106 and the plurality of second electrodes 108 of the touch screen are formed of a conductive material, and may be selected as a metal layer, a conductive polymer layer or a carbon nanotube layer. The material of the metal layer may be selected from a metal having good conductivity such as gold, silver or copper. The material of the conductive polymer layer may be selected from the group consisting of polyacetylene, polyparaphenylene, polyaniline, polyimibe, polypyrrole, polythiophene and the like. In this embodiment, the plurality of first electrodes 106 and the second plurality The electrodes 108 are conductive silver paste strips respectively formed on the upper and lower surfaces of the common substrate 110 by screen printing.
另，該第一透明導電層102的上表面進一步可設置一透明保護膜140。所述透明保護膜140。可藉由黏結劑直接黏結在第一透明導電層102上表面，也可採用熱壓法，與第一透明導電層102壓合在一起。該透明保護膜140可採用一層表面硬化處理、光滑防刮的塑膠層或樹脂層，該樹脂層可由苯丙環丁烯(BCB)、聚酯以及丙烯酸樹脂等材料形成。本實施例中，形成該透明保護膜140的材料為PET，用於保護第一透明導電層102，提高耐用性。該透明保護膜140可用以提供一些附加功能，如可減少眩光或降低反射。 In addition, a transparent protective film 140 may further be disposed on the upper surface of the first transparent conductive layer 102. The transparent protective film 140. It may be directly bonded to the upper surface of the first transparent conductive layer 102 by a bonding agent, or may be pressed together with the first transparent conductive layer 102 by a hot pressing method. The transparent protective film 140 may be a surface hardened, smooth scratch-resistant plastic layer or a resin layer formed of a material such as phenylcyclobutene (BCB), polyester, or acrylic resin. In this embodiment, the material of the transparent protective film 140 is made of PET for protecting the first transparent conductive layer 102, thereby improving durability. The transparent protective film 140 can be used to provide some additional functions such as reducing glare or reducing reflection.
由於該第一透明導電層102在第二方向上具有很好的導電異向性，將複數第一電極106沿第一方向相互間隔地設置於該第一透明導電層102一側時該第一透明導電層102可看作形成複數相互間隔並與第二方向平行的導電帶，該複數導電帶與該複數第一電極106分別導通。同理，該第二透明導電層104在第一方向上具有很好的導電異向性，該第二透明導電層104可看作形成複數相互間隔並與第一方向平行的導電帶，該複數導電帶與該複數第二電極108分別導通。故，該第一透明導電層102及第二透明導電層104可看作複數正交鋪設的導電帶。由於該第一透明導電層102及第二透明導電層104之間藉由所述公共基板110間隔，在所述複數導電帶相互交叉的複數交叉位置處形成複數電容。該複數電容可藉由與該第一電極106及第二電極108電連接的外部電路測得。當手指等觸摸物靠近一個或複數交叉位置時，該交叉位置的電容發生 變化，所述外部電路檢測到該變化的電容，從而得到該觸摸位置的座標。 Since the first transparent conductive layer 102 has a good conductive anisotropy in the second direction, the first plurality of first electrodes 106 are spaced apart from each other in the first direction on the side of the first transparent conductive layer 102. The transparent conductive layer 102 can be regarded as forming a plurality of conductive strips spaced apart from each other and parallel to the second direction, and the plurality of conductive strips are electrically connected to the plurality of first electrodes 106, respectively. Similarly, the second transparent conductive layer 104 has a good conductive anisotropy in the first direction, and the second transparent conductive layer 104 can be regarded as forming a plurality of conductive strips spaced apart from each other and parallel to the first direction. The conductive strips are electrically connected to the plurality of second electrodes 108, respectively. Therefore, the first transparent conductive layer 102 and the second transparent conductive layer 104 can be regarded as a plurality of orthogonally laid conductive strips. Since the first transparent conductive layer 102 and the second transparent conductive layer 104 are separated by the common substrate 110, a complex capacitance is formed at a plurality of intersections where the plurality of conductive strips cross each other. The complex capacitor can be measured by an external circuit electrically coupled to the first electrode 106 and the second electrode 108. When a touch object such as a finger approaches one or a plurality of intersecting positions, the capacitance at the intersection occurs Varying, the external circuit detects the changed capacitance, thereby obtaining the coordinates of the touch location.
在所述液晶顯示屏中，所述第一偏光層114的材料可為先前技術中常用的偏光材料，如二向色性有機高分子材料，具體可為碘系材料或染料材料等。所述第二偏光層124的材料可與第一偏光層114的材料相同。所述第二偏光層124的作用為將從設置於觸摸式液晶屏10下表面的導光板發出的光進行起偏，從而得到沿單一方向偏振的光線。所述第二偏光層124的偏振方向與第一偏光層114的偏振方向垂直。 In the liquid crystal display, the material of the first polarizing layer 114 may be a polarizing material commonly used in the prior art, such as a dichroic organic polymer material, and specifically may be an iodine-based material or a dye material. The material of the second polarizing layer 124 may be the same as the material of the first polarizing layer 114. The second polarizing layer 124 functions to polarize light emitted from the light guide plate disposed on the lower surface of the touch liquid crystal panel 10 to obtain light that is polarized in a single direction. The polarization direction of the second polarizing layer 124 is perpendicular to the polarization direction of the first polarizing layer 114.
所述第一配向層112的下表面可包括複數平行的第一溝槽，所述第二配向層122的上表面可包括複數平行的第二溝槽，從而可使液晶分子定向排列。所述第一配向層112的第一溝槽的排列方向與第二配向層122的第二溝槽的排列方向垂直，故第一配向層112與第二配向層122之間的液晶分子在兩個配向層之間的排列角度產生90度旋轉，從而起到旋光的作用，將第二偏光層124起偏後的光線的偏振方向旋轉90度。所述第一配向層112及第二配向層122的材料可為聚苯乙烯及其衍生物、聚醯亞胺、聚乙烯醇、聚酯、環氧樹脂、聚胺酯、聚矽烷等。所述第一溝槽及第二溝槽可採用先前技術的膜磨擦法，傾斜蒸鍍SiOx膜法和對膜進行微溝槽處理法等方法形成。本實施例中，所述第一配向層112及第二配向層122的材料為聚醯亞胺，厚度為1~50微米。 The lower surface of the first alignment layer 112 may include a plurality of parallel first trenches, and the upper surface of the second alignment layer 122 may include a plurality of parallel second trenches to align liquid crystal molecules. The arrangement direction of the first trenches of the first alignment layer 112 is perpendicular to the alignment direction of the second trenches of the second alignment layer 122, so the liquid crystal molecules between the first alignment layer 112 and the second alignment layer 122 are in two The alignment angle between the alignment layers produces a 90-degree rotation, thereby functioning as an optical rotation, and the polarization direction of the polarized light of the second polarizing layer 124 is rotated by 90 degrees. The material of the first alignment layer 112 and the second alignment layer 122 may be polystyrene and its derivatives, polyimine, polyvinyl alcohol, polyester, epoxy resin, polyurethane, polydecane, and the like. The first trench and the second trench may be formed by a prior art film rubbing method, a tilted vapor deposition SiO x film method, and a micro trench treatment method on the film. In this embodiment, the first alignment layer 112 and the second alignment layer 122 are made of polyimide and have a thickness of 1 to 50 micrometers.
所述液晶層130包括複數長棒狀的液晶分子。所述液晶層130的液晶材料為先前技術中常用的液晶材料。所述液晶層130的厚度為 1~50微米，本實施例中，液晶層130的厚度為5微米。 The liquid crystal layer 130 includes a plurality of long rod-shaped liquid crystal molecules. The liquid crystal material of the liquid crystal layer 130 is a liquid crystal material commonly used in the prior art. The thickness of the liquid crystal layer 130 is 1 to 50 μm, in the present embodiment, the thickness of the liquid crystal layer 130 is 5 μm.
所述薄膜電晶體面板120內部的具體結構未在圖1中示出，但本領域技術人員可得知該薄膜電晶體面板120可進一步包括一透明的下基板，形成於該下基板上表面的複數薄膜電晶體、複數圖元電極及一顯示屏驅動電路。所述複數薄膜電晶體與圖元電極一一對應連接，所述複數薄膜電晶體藉由源極線與柵極線與顯示屏驅動電路電連接。該圖元電極在薄膜電晶體的控制下與所述第二透明導電層104配合，為該液晶層130施加配向電場，從而使液晶層130中的液晶分子定向排列。該複數圖元電極與所述觸摸感應區域150相對。 The specific structure inside the thin film transistor panel 120 is not shown in FIG. 1, but those skilled in the art may know that the thin film transistor panel 120 may further include a transparent lower substrate formed on the upper surface of the lower substrate. A plurality of thin film transistors, a plurality of pixel electrodes, and a display driving circuit. The plurality of thin film transistors are connected in one-to-one correspondence with the pixel electrodes, and the plurality of thin film transistors are electrically connected to the display driving circuit by the source lines and the gate lines. The pixel electrode is coupled to the second transparent conductive layer 104 under the control of the thin film transistor, and an alignment electric field is applied to the liquid crystal layer 130 to align the liquid crystal molecules in the liquid crystal layer 130. The complex primitive electrode is opposite the touch sensing area 150.
本技術方案實施例提供的觸摸式液晶屏中的觸摸屏與液晶顯示屏共用公共基板，故具有較薄的厚度和簡單的結構，簡化了製造工藝，降低了製造成本，提高背光源的利用率，改善顯示品質。 The touch screen in the touch liquid crystal screen provided by the embodiment of the technical solution shares a common substrate with the liquid crystal display screen, so the thinner thickness and the simple structure simplify the manufacturing process, reduce the manufacturing cost, and improve the utilization ratio of the backlight. Improve display quality.
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例，自不能以此限制本案之申請專利範圍。舉凡習知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 those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.
10‧‧‧觸摸式液晶屏 10‧‧‧Touch LCD screen
102‧‧‧第一透明導電層 102‧‧‧First transparent conductive layer
104‧‧‧第二透明導電層 104‧‧‧Second transparent conductive layer
110‧‧‧公共基板 110‧‧‧Common substrate
112‧‧‧第一配向層 112‧‧‧First alignment layer
114‧‧‧第一偏光層 114‧‧‧First polarizing layer
130‧‧‧液晶層 130‧‧‧Liquid layer
122‧‧‧第二配向層 122‧‧‧Second alignment layer
120‧‧‧薄膜電晶體面板 120‧‧‧Thin-film transistor panel
124‧‧‧第二偏光層 124‧‧‧Second polarizing layer
140‧‧‧透明保護膜 140‧‧‧Transparent protective film
Claims (11)
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| TW099116877A TWI539202B (en) | 2010-05-26 | 2010-05-26 | Liquid crystal display with touch panel |
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| TW099116877A TWI539202B (en) | 2010-05-26 | 2010-05-26 | Liquid crystal display with touch panel |
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| TW201142412A TW201142412A (en) | 2011-12-01 |
| TWI539202B true TWI539202B (en) | 2016-06-21 |
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| CN103576351A (en) * | 2012-07-23 | 2014-02-12 | 天津富纳源创科技有限公司 | Liquid crystal module having touch function |
| CN103576356A (en) * | 2012-07-23 | 2014-02-12 | 天津富纳源创科技有限公司 | Production method for liquid crystal module having touch function |
| CN103576352A (en) * | 2012-07-23 | 2014-02-12 | 天津富纳源创科技有限公司 | LCD (Liquid Crystal Display) module with touch function |
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