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TWI684046B - Liquid crystal display device with touch panel - Google Patents

Liquid crystal display device with touch panel Download PDF

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Publication number
TWI684046B
TWI684046B TW105114444A TW105114444A TWI684046B TW I684046 B TWI684046 B TW I684046B TW 105114444 A TW105114444 A TW 105114444A TW 105114444 A TW105114444 A TW 105114444A TW I684046 B TWI684046 B TW I684046B
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touch panel
liquid crystal
polarizing plate
layer
crystal display
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TW105114444A
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TW201708901A (en
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高橋裕司
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日商捷客斯能源股份有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)

Abstract

一種附觸控面板的液晶顯示裝置，具備：背面側偏光板；配置成與該背面側偏光板對向的前面側偏光板；配置於該前面側偏光板與前述背面側偏光板之間的液晶層；配置於該液晶層與前述前面側偏光板之間，且具有負C性的透明聚醯亞胺基板觸控面板；相鄰該觸控面板配置的正C層。 A liquid crystal display device with a touch panel, comprising: a back-side polarizing plate; a front-side polarizing plate arranged to face the back-side polarizing plate; a liquid crystal arranged between the front-side polarizing plate and the back-side polarizing plate A layer; a transparent polyimide substrate touch panel with a negative C property disposed between the liquid crystal layer and the front-side polarizer; a positive C layer adjacent to the touch panel.

Description

附觸控面板的液晶顯示裝置 Liquid crystal display device with touch panel

本發明係有關具備觸控面板的液晶顯示裝置。 The invention relates to a liquid crystal display device provided with a touch panel.

作為習知的附觸控面板的液晶顯示裝置，廣為人知的有在液晶顯示裝置上配置觸控面板的外接式觸控面板(例如，JP2012-230491A(專利文獻1))。該外接式附觸控面板的液晶顯示裝置，因為是在液晶顯示裝置上重疊設置觸控面板，不只厚度會變厚，也會看到觸控面板的感測器圖案，就是所謂的圖形可視現象。 As a conventional liquid crystal display device with a touch panel, an external touch panel in which a touch panel is arranged on the liquid crystal display device is widely known (for example, JP2012-230491A (Patent Document 1)). The externally connected liquid crystal display device with a touch panel, because the touch panel is superimposed on the liquid crystal display device, not only will the thickness become thicker, but also the sensor pattern of the touch panel will be seen, which is the so-called graphic visual phenomenon .

因此，為了防止這種圖形可視現象，因此提案有在液晶顯示裝置的前面側偏光板與液晶層之間配置觸控面板之內嵌式附觸控面板的液晶顯示裝置(例如，JP H8-161116A(專利文獻2))。在這種內嵌式附觸控面板的液晶顯示裝置中，因為在比前面側偏光板還要更內側(液晶層側)配置觸控面板，對於觸控面板用基板必須要求光等向性。所以，因為用於外接式附觸控面板的液晶顯示裝置之 聚對苯二甲酸基板，具有高雙折射性(光等向性低)，無法適用於內嵌式的附觸控面板的液晶顯示裝置。因此，在內嵌式附觸控面板的液晶顯示裝置中，作為觸控面板用基板，必須使用環烯烴系聚合物基板等雙折射性小(具有光等向性)的樹脂所構成的基板。 Therefore, in order to prevent such a visible phenomenon of graphics, a liquid crystal display device with a touch panel embedded in which a touch panel is arranged between the polarizing plate on the front side of the liquid crystal display device and the liquid crystal layer is proposed (for example, JP H8-161116A (Patent Literature 2)). In such a built-in liquid crystal display device with a touch panel, since the touch panel is arranged on the inner side (liquid crystal layer side) than the front side polarizing plate, the optical isotropy must be required for the touch panel substrate. Therefore, because it is used for an external LCD device with a touch panel Polyterephthalic acid substrates have high birefringence (low optical isotropy) and cannot be applied to in-cell liquid crystal display devices with touch panels. Therefore, in a liquid crystal display device with a built-in touch panel, as a substrate for a touch panel, a substrate composed of a resin having low birefringence (having optical isotropy) such as a cycloolefin-based polymer substrate must be used.

不過，因為環烯烴系聚合物的耐熱性低，在環烯烴系聚合物基板的表面形成透明電極時，無法進行高溫的加熱處理，會有透明電極的導電性變低的問題。因此，環烯烴系聚合物基板，不適合作為用於大畫面的內嵌式附觸控面板的液晶顯示裝置中的觸控面板用基板。 However, because the cycloolefin-based polymer has low heat resistance, when a transparent electrode is formed on the surface of the cycloolefin-based polymer substrate, high-temperature heat treatment cannot be performed, and there is a problem that the conductivity of the transparent electrode becomes low. Therefore, the cycloolefin-based polymer substrate is not suitable as a substrate for a touch panel in an in-cell touch panel-equipped liquid crystal display device used for a large screen.

[先前技術文獻] [Prior Technical Literature] [專利文獻] [Patent Literature]

[專利文獻1]JP 2012-230491 A [Patent Literature 1] JP 2012-230491 A

[專利文獻1]JP H8-161116 A [Patent Literature 1] JP H8-161116 A

本發明鑑於以上習知技術的問題，目的為提供一種內嵌式附觸控面板的液晶顯示裝置，具備：具有良好導電性透明電極的觸控面板。 In view of the above problems of the prior art, the present invention aims to provide an in-cell liquid crystal display device with a touch panel, including: a touch panel with a transparent electrode with good conductivity.

本發明的發明者們，為了達成上述目的，經 過努力研究的結果，著目在聚醯亞胺的良好耐熱性上，發現藉由作為觸控面板用基板用的透明聚醯亞胺基板，在形成透明電極時能夠以高溫進行加熱處理，可以得到具有良好導電性透明電極觸控面板。 The inventors of the present invention have achieved As a result of intensive research, focusing on the good heat resistance of polyimide, it was found that the transparent polyimide substrate used as a substrate for touch panels can be heat-treated at a high temperature when forming a transparent electrode. A transparent electrode touch panel with good conductivity is obtained.

不過，因為透明聚醯亞胺基板具有負C性雙折射性，若直接作為內嵌式附觸控面板的液晶顯示裝置用基板來使用的話，會有顯示混亂的問題。 However, because the transparent polyimide substrate has negative C-type birefringence, if it is used directly as a substrate for a liquid crystal display device with an embedded touch panel, there is a problem of display confusion.

因此，本發明的發明者們發現，藉由組合這種負C性的透明聚醯亞胺基板與具有垂直配向性的層(正C層)，前述透明聚醯亞胺基板的負C性會藉由前述正C層來做光學補償，能改善顯示混亂，因此完成本發明。 Therefore, the inventors of the present invention have found that by combining such a negative polyimide transparent polyimide substrate with a layer having a vertical alignment (positive C layer), the negative polyimide substrate has a negative C property. The optical compensation by the aforementioned positive C layer can improve the display disorder, and thus the present invention has been completed.

也就是說，本發明的附觸控面板的液晶顯示裝置，具備：背面側偏光板；配置成與該背面側偏光板對向的前面側偏光板；配置於該前面側偏光板與前述背面側偏光板之間的液晶層；配置於該液晶層與前述前面側偏光板之間，且具有負C性的透明聚醯亞胺基板觸控面板；相鄰該觸控面板配置的正C層。 That is, the liquid crystal display device with a touch panel of the present invention includes: a rear polarizer; a front polarizer arranged to face the rear polarizer; and a polarizer arranged on the front side and the back side A liquid crystal layer between the polarizing plates; a transparent polyimide substrate touch panel with a negative C property disposed between the liquid crystal layer and the front-side polarizing plate; a positive C layer adjacent to the touch panel.

這種本發明的附觸控面板的液晶顯示裝置中，前述正C層可以配置於前述前面側偏光板與前述觸控面板之間，或著，配置於前述液晶層與前述觸控面板之間也可以。此外，前述觸控面板為在：前述負C性的透明聚 醯亞胺基板上具備ITO透明電極之物也可以。 In the liquid crystal display device with a touch panel of the present invention, the positive C layer may be disposed between the front polarizing plate and the touch panel, or may be disposed between the liquid crystal layer and the touch panel Can also. In addition, the touch panel is composed of: It is also possible to have an ITO transparent electrode on the imide substrate.

根據本發明，能夠得到一種內嵌式附觸控面板的液晶顯示裝置，具備：具有良好導電性透明電極的觸控面板。 According to the present invention, it is possible to obtain an in-cell touch panel-equipped liquid crystal display device including a touch panel having a transparent electrode with good conductivity.

1‧‧‧背光 1‧‧‧Backlight

2‧‧‧背面側偏光板 2‧‧‧Back side polarizer

3‧‧‧液晶層(液晶顯示元件) 3‧‧‧Liquid crystal layer (liquid crystal display element)

4‧‧‧具有負C性透明聚醯亞胺基板的觸控面板 4‧‧‧ Touch panel with negative C transparent polyimide substrate

5‧‧‧正C層 5‧‧‧C floor

6‧‧‧前面側偏光板 6‧‧‧Front side polarizer

7‧‧‧保護玻璃 7‧‧‧Protective glass

[圖1]表示本發明的附觸控面板的液晶顯示裝置之實施形態的一例之模式圖。 1 is a schematic diagram showing an example of an embodiment of a liquid crystal display device with a touch panel of the present invention.

[圖2]表示本發明的附觸控面板的液晶顯示裝置之其他的實施形態的一例之模式圖。 2 is a schematic diagram showing an example of another embodiment of the liquid crystal display device with a touch panel of the present invention.

[實施形態] [Embodiment]

本發明的附觸控面板的液晶顯示裝置為，具備：背面側偏光板；配置成與該背面側偏光板對向的前面側偏光板；配置於該前面側偏光板與前述背面側偏光板之間的液晶層；配置於該液晶層與前述前面側偏光板之間，且具有負C性的透明聚醯亞胺基板觸控面板； 相鄰該觸控面板配置的正C層的內嵌式附觸控面板的液晶顯示裝置。 The liquid crystal display device with a touch panel of the present invention includes: a back-side polarizing plate; a front-side polarizing plate arranged to face the back-side polarizing plate; and a front-side polarizing plate and the back-side polarizing plate A liquid crystal layer between the liquid crystal layer and a transparent polyimide substrate touch panel having a negative C property and disposed between the liquid crystal layer and the front polarizing plate; An in-cell liquid crystal display device with a touch panel and a positive C layer disposed adjacent to the touch panel.

以下，參照圖式詳細說明本發明最佳的實施形態，但本發明不限於前述圖式所揭示的內容。此外，以下的說明及圖式中，同一或相當的要素以同一符號來標示，省略重覆的說明。 Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the contents disclosed in the aforementioned drawings. In the following description and drawings, the same or corresponding elements are denoted by the same symbols, and repeated explanations are omitted.

如圖1及圖2所示，本發明的附觸控面板的液晶顯示裝置，具備：背光1、背面側偏光板2、液晶層(液晶顯示元件)3、具有負C性透明聚醯亞胺基板的觸控面板4、正C層5、前面側偏光板6、及保護玻璃7。 As shown in FIGS. 1 and 2, the liquid crystal display device with a touch panel of the present invention includes: a backlight 1, a back side polarizing plate 2, a liquid crystal layer (liquid crystal display element) 3, and a transparent polyimide with negative C properties The touch panel 4 of the substrate, the positive C layer 5, the front polarizing plate 6, and the protective glass 7.

於本發明的附觸控面板的液晶顯示裝置中，背光1與保護玻璃7以互相對向的方式配置，在其之間以互相對向的方式配置背面側偏光板2與前面側偏光板6。液晶層3配置於背面側偏光板2與前面側偏光板6之間，觸控面板4及正C層5以互相相鄰的狀態，配置於液晶層3與前面側偏光板6之間。因此，於本發明的附觸控面板的液晶顯示裝置中，因為觸控面板4及正C層5以於互相相鄰的狀態配置，構成觸控面板4的透明聚醯亞胺基板的負C性藉由正C層5做光學補償，改善顯示混亂。 In the liquid crystal display device with a touch panel of the present invention, the backlight 1 and the cover glass 7 are arranged to face each other, and the back side polarizing plate 2 and the front side polarizing plate 6 are arranged so as to face each other . The liquid crystal layer 3 is disposed between the back-side polarizing plate 2 and the front-side polarizing plate 6, and the touch panel 4 and the positive C layer 5 are disposed adjacent to each other between the liquid crystal layer 3 and the front-side polarizing plate 6. Therefore, in the liquid crystal display device with a touch panel of the present invention, since the touch panel 4 and the positive C layer 5 are arranged adjacent to each other, the negative C of the transparent polyimide substrate constituting the touch panel 4 The optical compensation by the positive C layer 5 improves the display chaos.

此外，於本發明的附觸控面板的液晶顯示裝置中，正C層如圖1所示，可以配置在觸控面板4與前面側偏光板6之間，也就是相鄰於觸控面板4的前面側，也可以如圖2所示，配置於液晶層3與觸控面板4之間，也就是相鄰於觸控面板4的液晶層側。 In addition, in the liquid crystal display device with a touch panel of the present invention, as shown in FIG. 1, the positive C layer may be disposed between the touch panel 4 and the front polarizing plate 6, that is, adjacent to the touch panel 4 As shown in FIG. 2, the front side of the front panel may be disposed between the liquid crystal layer 3 and the touch panel 4, that is, adjacent to the liquid crystal layer side of the touch panel 4.

再來，於本發明的附觸控面板的液晶顯示裝置中，觸控面板4可以是1層透明聚醯亞胺基板(圖1及圖2)，也可是2層(圖未示)。透明聚醯亞胺基板為2層時，一方的透明聚醯亞胺基板，如果與正C層一起配置在液晶層3與前面側偏光板6之間的話，另一方的透明聚醯亞胺基板，也可以與正C層一起配置於液晶層3與前面側偏光板6之間，也可以配置於前面側偏光板6與保護玻璃7之間(後者的情形中，正C層配置於任意方都可以)。 Furthermore, in the liquid crystal display device with a touch panel of the present invention, the touch panel 4 may be a transparent polyimide substrate with one layer (FIGS. 1 and 2) or two layers (not shown). When the transparent polyimide substrate has two layers, if one transparent polyimide substrate is arranged between the liquid crystal layer 3 and the front polarizing plate 6 together with the positive C layer, the other transparent polyimide substrate , May be arranged between the liquid crystal layer 3 and the front polarizer 6 together with the positive C layer, or may be arranged between the front polarizer 6 and the cover glass 7 (in the latter case, the positive C layer is arranged on any side Can be).

於本發明中，觸控面板4雖然不特別限定為具有負C性的透明聚醯亞胺基板之物，但通常會在透明聚醯亞胺基板的表面配置透明電極(圖未示透明電極)。作為前述透明電極並沒有特別限制，從充分活用作為觸控面板用基板所使用的負C性的透明聚醯亞胺基板的優點這種觀點來看，ITO透明電極較佳。如以上所述，於本發明中，因為將有良好耐熱性的透明聚醯亞胺基板作為觸控面板用基板使用，在透明聚醯亞胺基板的表面形成透明電極時，可以進行高溫(較佳為180℃以上)的加熱處理，也能夠形成導電性良好的透明電極。此外，前述負C性透明聚醯亞胺基板滿足以下式子所表示的折射率特性：nz<ny≦nx(式中，nx為對於波長550nm的光之負C性的透明聚醯亞胺基板的面內最大主折射率，ny為與具有對於波長550nm的光之負C性的透明聚醯亞胺基板的面內最大主折射率的方向垂直的方向之主折射率，nz為對於波長550nm 的光之負C性的透明聚醯亞胺基板的厚度方向之主折射率)。 In the present invention, the touch panel 4 is not particularly limited to a transparent polyimide substrate having negative C properties, but usually a transparent electrode is arranged on the surface of the transparent polyimide substrate (the transparent electrode is not shown) . The transparent electrode is not particularly limited, but from the viewpoint of making full use of the advantages of the negative-C transparent polyimide substrate used as a substrate for a touch panel, an ITO transparent electrode is preferable. As described above, in the present invention, because a transparent polyimide substrate having good heat resistance is used as a substrate for a touch panel, when a transparent electrode is formed on the surface of the transparent polyimide substrate, high temperature Preferably, the heat treatment at 180° C. or higher can also form a transparent electrode with good conductivity. In addition, the aforementioned negative-C transparent polyimide substrate satisfies the refractive index characteristic represented by the following formula: nz<ny≦nx (where nx is a negative-C transparent polyimide substrate for light having a wavelength of 550 nm The maximum principal refractive index in the plane, ny is the principal refractive index in the direction perpendicular to the direction of the maximum principal refractive index in the plane of the transparent polyimide substrate with negative C for light at a wavelength of 550 nm, and nz is the wavelength at 550 nm The main refractive index in the thickness direction of the transparent polyimide substrate with negative C of light.

此外，於本發明中，對於波長550nm的光，構成觸控面板4的負C性的透明聚醯亞胺基板的厚度方向的延遲Rth(PI)及正C層5的厚度方向的延遲Rth(pC)滿足以下式子所表示的折射率特性：-10nm<Rth(PI)+Rth(pC)<+10nm。 In the present invention, for light with a wavelength of 550 nm, the thickness-wise retardation Rth(PI) of the negative-C transparent polyimide substrate constituting the touch panel 4 and the thickness-wise retardation Rth(PI) of the positive C layer 5 ( pC) satisfies the refractive index characteristic expressed by the following formula: -10nm<Rth(PI)+Rth(pC)<+10nm.

藉此，透明聚醯亞胺基板的負C性藉由正C層5做充分的光學補償，改善顯示混亂。 In this way, the negative C property of the transparent polyimide substrate is sufficiently optically compensated by the positive C layer 5 to improve the display disorder.

再來，在本發明中，正C層滿足以下式子所表示的折射率特性：ny≦nx<nz(式中，nx為對於波長550nm的光之正C層的面內最大主折射率，ny為與具有對於波長550nm的光之正C層的面內最大主折射率的方向垂直的方向之主折射率，nz為對於波長550nm的光之正C層的厚度方向之主折射率)。 Furthermore, in the present invention, the positive C layer satisfies the refractive index characteristic expressed by the following formula: ny≦nx<nz (where nx is the in-plane maximum principal refractive index of the positive C layer for light having a wavelength of 550 nm, ny is the principal refractive index in a direction perpendicular to the direction of the in-plane maximum principal refractive index of the positive C layer for light having a wavelength of 550 nm, and nz is the principal refractive index in the thickness direction of the positive C layer for light having a wavelength of 550 nm).

此外，正C層對於波長550nm的光，面內延遲Re及厚度方向的延遲Rth為滿足以下式子所表示的折射率特性：0nm≦Re≦20nm -500nm≦Rth≦-30nm。 In addition, in the positive C layer, for the light with a wavelength of 550 nm, the in-plane retardation Re and the thickness direction retardation Rth satisfy the refractive index characteristics expressed by the following formula: 0 nm≦Re≦20 nm -500 nm≦Rth≦-30 nm.

藉此，透明聚醯亞胺基板的負C性藉由正C層5做充分的光學補償，有更加改善顯示混亂的傾向。 As a result, the negative C property of the transparent polyimide substrate is sufficiently optically compensated by the positive C layer 5 to further improve the display disorder.

作為本發明所用的透明聚醯亞胺基板，若具 有負C性的話不會有特別的限制，但例如可以是JP 2006-137881 A所記載的由可溶性聚醯亞胺所形的基板、JP 2014-156584 A所記載的由聚醯亞胺所形成的基板、或JP 2014-173071 A所記載的由聚醯亞胺薄膜等。 As the transparent polyimide substrate used in the present invention, if There is no particular limitation if it has negative C property, but for example, it may be a substrate formed of soluble polyimide described in JP 2006-137881 A, or formed of polyimide described in JP 2014-156584 A Substrate, or polyimide film described in JP 2014-173071 A.

此外，作為本發明所用的正C層，若具有正C性層的話不會有特別的限制，但例如可以是JP 2006-337575 A所記載的利用垂直配向液晶薄膜(正C型相位差薄膜)所形成的層等。 In addition, the positive C layer used in the present invention is not particularly limited if it has a positive C layer, but for example, it may be a vertical alignment liquid crystal film (positive C type retardation film) described in JP 2006-337575 A The formed layer, etc.

作為本發明所使用的背光1、背面側偏光板2、液晶層3、前面側偏光板6、及保護玻璃7並沒有特別的限制，可以適宜選用習知的用於內嵌式附觸控面板的液晶顯示裝置之物。 The backlight 1, back polarizer 2, liquid crystal layer 3, front polarizer 6, and protective glass 7 used in the present invention are not particularly limited, and conventionally used in-cell touch panels can be suitably selected Of the LCD device.

於本發明的附觸控面板的液晶顯示裝置中，觸控面板4與正C層5較佳為直接鄰接(不隔著其他層)，但也可以隔著具有習知光等向性的層來做鄰接。 In the liquid crystal display device with a touch panel of the present invention, the touch panel 4 and the positive C layer 5 are preferably directly adjacent to each other (without intervening other layers), but can also be done through a layer having conventional light isotropy Adjacent.

此外，於本發明的附觸控面板的液晶顯示裝置中，也可以在背光1與背面側偏光板2之間，背面側偏光板2與液晶層3之間，液晶層3與觸控面板4之間，正C層5與前面側偏光板6之間，前面側偏光板6與保護玻璃7之間，配置其他的層。作為這些其他的層，若是用於習知的內嵌式附觸控面板的液晶顯示裝置之層的話，並沒有特別的限制。 In addition, in the liquid crystal display device with a touch panel of the present invention, between the backlight 1 and the back-side polarizing plate 2, between the back-side polarizing plate 2 and the liquid crystal layer 3, the liquid crystal layer 3 and the touch panel 4 Between the positive C layer 5 and the front-side polarizing plate 6, and between the front-side polarizing plate 6 and the cover glass 7, other layers are arranged. As these other layers, if it is a layer used for the conventional in-cell type liquid crystal display device with a touch panel, it is not specifically limited.

這種本發明的附觸控面板的液晶顯示裝置，例如，可以使用以下的方法來製造。若是圖1所示的本發 明之附觸控面板的液晶顯示裝置的情況，首先於液晶層(液晶顯示元件)3的背面側貼附背面側偏光板2，於前面側貼附觸控面板4(預先在表面形成有透明電極的負C性的透明聚醯亞胺基板)。接著，在觸控面板4的前面側配置正C層5及前面側偏光板6。此時，可以將預先貼附前面側偏光板6的正C層5，在觸控面板4的前面側，貼附正C層5於與觸控面板4互相鄰接的位置，也可以在觸控面板4的前面側形成正C層5之後，於正C層5的前面側貼附前面側偏光板6。之後，在前面側偏光板6的前面貼附保護玻璃7，在背面側偏光板2的背面安裝背光1。 Such a liquid crystal display device with a touch panel of the present invention can be manufactured using the following method, for example. If it is the present shown in Figure 1 In the case of a liquid crystal display device with a touch panel, first, the back side polarizing plate 2 is attached to the back side of the liquid crystal layer (liquid crystal display element) 3, and the touch panel 4 is attached to the front side (a transparent electrode is formed on the surface in advance) The negative C transparent polyimide substrate). Next, the positive C layer 5 and the front polarizing plate 6 are arranged on the front side of the touch panel 4. At this time, the positive C layer 5 attached to the front polarizer 6 in advance may be attached to the front side of the touch panel 4 at a position adjacent to the touch panel 4 or at the touch After the front C side 5 is formed on the front side of the panel 4, the front side polarizing plate 6 is attached to the front side of the front C layer 5. Thereafter, a protective glass 7 is attached to the front of the front polarizing plate 6, and the backlight 1 is attached to the back of the rear polarizing plate 2.

此外，若是圖2所示的本發明之附觸控面板的液晶顯示裝置的情況，首先，於液晶層(液晶顯示元件)3的背面側貼附背面側偏光板2，於前面側形成正C層5。接著，於正C層5的前面形成附觸控面板4(預先在表面形成有透明電極的負C型的透明聚醯亞胺基板)之後，在觸控面板4的前面側貼附前面側偏光板6。之後，在前面側偏光板6的前面貼附保護玻璃7，在背面側偏光板2的背面安裝背光1。 In addition, in the case of the liquid crystal display device with a touch panel of the present invention shown in FIG. 2, first, the back side polarizing plate 2 is attached to the back side of the liquid crystal layer (liquid crystal display element) 3 to form a positive C on the front side Layer 5. Next, after forming a touch panel 4 (a negative C-type transparent polyimide substrate with a transparent electrode formed on the surface in advance) on the front surface of the positive C layer 5, the front side polarized light is attached to the front side of the touch panel 4 Plate 6. Thereafter, a protective glass 7 is attached to the front of the front polarizing plate 6, and the backlight 1 is attached to the back of the rear polarizing plate 2.

[產業上的利用可能性] [Industry use possibility]

如同以上所說明的，根據本發明，能夠得到一種內嵌式附觸控面板的液晶顯示裝置，具備：具有良好導電性透明電極的觸控面板。 As described above, according to the present invention, an in-cell liquid crystal display device with a touch panel can be obtained, including: a touch panel having transparent electrodes with good conductivity.

接著，本發明的附觸控面板的液晶顯示裝 置，因為具有良好導電性透明電極的觸控面板，可以適用於大畫面的附觸控面板的液晶顯示裝置等。 Next, the liquid crystal display device with a touch panel of the present invention Because the touch panel with transparent electrodes with good conductivity can be applied to a large-screen liquid crystal display device with a touch panel.

1‧‧‧背光 1‧‧‧Backlight

2‧‧‧背面側偏光板 2‧‧‧Back side polarizer

3‧‧‧液晶層(液晶顯示元件) 3‧‧‧Liquid crystal layer (liquid crystal display element)

4‧‧‧具有負C性透明聚醯亞胺基板的觸控面板 4‧‧‧ Touch panel with negative C transparent polyimide substrate

5‧‧‧正C層 5‧‧‧C floor

6‧‧‧前面側偏光板 6‧‧‧Front side polarizer

7‧‧‧保護玻璃 7‧‧‧Protective glass

Claims (2)

一種附觸控面板的液晶顯示裝置，具備：背面側偏光板；配置成與該背面側偏光板對向的前面側偏光板；配置於該前面側偏光板與前述背面側偏光板之間的液晶層；配置於該液晶層與前述前面側偏光板之間，且具有負C性的透明聚醯亞胺基板及配置於該透明聚醯亞胺基板的表面的透明電極的觸控面板；配置於前述液晶層與前述觸控面板之間的正C層。 A liquid crystal display device with a touch panel, comprising: a back-side polarizing plate; a front-side polarizing plate arranged to face the back-side polarizing plate; a liquid crystal arranged between the front-side polarizing plate and the back-side polarizing plate A touch panel arranged between the liquid crystal layer and the front-side polarizing plate, and having a negative C transparent polyimide substrate and a transparent electrode arranged on the surface of the transparent polyimide substrate; A positive C layer between the liquid crystal layer and the touch panel. 如請求項1所記載之附觸控面板的液晶顯示裝置，其中，前述透明電極為ITO透明電極。 The liquid crystal display device with a touch panel as recited in claim 1, wherein the transparent electrode is an ITO transparent electrode.
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Families Citing this family (3)

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KR20210002489A (en) * 2018-04-27 2021-01-08 닛토덴코 가부시키가이샤 Liquid crystal display
WO2019216273A1 (en) * 2018-05-07 2019-11-14 株式会社コイネックス Transparent touch pad, production method thereof, and electronic device using same
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011257610A (en) * 2010-06-09 2011-12-22 Hayashi Technical Kenkyusho:Kk On-vehicle display device
US20120306777A1 (en) * 2011-06-01 2012-12-06 Samsung Mobile Display Co., Ltd. Flexible touch screen panel
JP2013161343A (en) * 2012-02-07 2013-08-19 Dainippon Printing Co Ltd Liquid crystal display with touch panel
TW201504696A (en) * 2013-07-23 2015-02-01 Dongwoo Fine Chem Co Ltd Anti-reflective polarizing plate and image display device including the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3542838B2 (en) 1994-12-01 2004-07-14 藤森工業株式会社 Transparent conductive sheet for transparent touch panel
US20020192445A1 (en) * 2001-05-03 2002-12-19 Ezzell Stephen A. Plastic substrate for display applications
CN102279662A (en) * 2010-06-13 2011-12-14 明兴光电股份有限公司 Touch display panel and color filter touch substrate
JP2012230491A (en) 2011-04-25 2012-11-22 Nitto Denko Corp Transparent conductive film for touch panel, and image display device
US20140320777A1 (en) * 2011-11-29 2014-10-30 Sharp Kabushiki Kaisha Display device substrate and display device including the same
JP6136527B2 (en) * 2012-10-29 2017-05-31 大日本印刷株式会社 Optical laminate for front surface of in-cell touch panel liquid crystal element and in-cell touch panel type liquid crystal display device using the same
KR102151205B1 (en) * 2013-05-21 2020-09-03 삼성디스플레이 주식회사 Display device
CN104423715B (en) * 2013-09-11 2019-07-23 Lg伊诺特有限公司 Touch window and the display including the touch window
CN104808864A (en) * 2015-05-22 2015-07-29 京东方科技集团股份有限公司 Touch control display panel and display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011257610A (en) * 2010-06-09 2011-12-22 Hayashi Technical Kenkyusho:Kk On-vehicle display device
US20120306777A1 (en) * 2011-06-01 2012-12-06 Samsung Mobile Display Co., Ltd. Flexible touch screen panel
JP2013161343A (en) * 2012-02-07 2013-08-19 Dainippon Printing Co Ltd Liquid crystal display with touch panel
TW201504696A (en) * 2013-07-23 2015-02-01 Dongwoo Fine Chem Co Ltd Anti-reflective polarizing plate and image display device including the same

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