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Liquid crystal display device with touch panel and method for manufacturing such liquid crystal display device

A liquid crystal display device, touch panel technology, applied in the input/output process of data processing, instruments, polarizing elements, etc., can solve the problem of inability to obtain front contrast, and achieve the effect of excellent front contrast

Active Publication Date: 2018-01-02
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The inventors of the present invention combined the above-mentioned so-called mid-cell type or built-in polarizer-integrated touch panel module with a VA mode liquid crystal display unit. The improvement effect of frontal contrast

Method used

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  • Liquid crystal display device with touch panel and method for manufacturing such liquid crystal display device
  • Liquid crystal display device with touch panel and method for manufacturing such liquid crystal display device
  • Liquid crystal display device with touch panel and method for manufacturing such liquid crystal display device

Examples

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preparation example Construction

[0324] The thickness of the film can be prepared by adjusting the solid concentration contained in the dope, the slit gap of the nozzle of the die, the extrusion pressure from the die, the speed of the metal support, etc. so as to obtain a desired thickness. The width of the transparent resin film obtained as described above is preferably in the range of 0.5 to 4 m, more preferably in the range of 0.6 to 3 m, and even more preferably in the range of 0.8 to 2.5 m. The length is preferably wound in the range of 100 to 10,000 m per roll, more preferably in the range of 500 to 9,000 m, and still more preferably in the range of 1,000 to 8,000 m.

[0325] The optical compensation film involved in the present invention can achieve desired optical properties by properly adjusting the process conditions such as the polymer structure used, the type and amount of additives, stretching ratio, and residual volatile components during peeling.

[0326] The optical compensation film according...

Embodiment 1

[0433] As the cellulose ester-based resin, cycloolefin-based resin, polyimide-based resin, polyarylate-based resin, and acrylic resin used in Examples, resins listed below were used.

[0434] [resin]

[0435] Cycloolefin-based resin (COP): ARTON G7810, manufactured by JSR Corporation

[0436] Cellulose acetate propionate (CAP): acetyl substitution degree 1.5, propionyl substitution degree 1.0, total acyl substitution degree 2.5, weight average molecular weight 250,000)

[0437] Polyimide-based resin (PI): A polyimide-based resin was synthesized by the following method.

[0438]

[0439] (polymerization of polyimide precursor)

[0440] Production of polyamic acid using a reactor equipped with a stainless steel separable flask as a reaction vessel, 2 paddle fins as a stirring device in the separable flask, and a device with a cooling capacity of 20.9 kJ / min as a cooling device . During the polymerization reaction, in order to prevent the incorporation of moisture, nitrogen...

Embodiment 2

[0561]

[0562] One side of the optical compensation films 104, 110, 112 and 114 related to the present invention made in Example 1 is formed with an ITO film as a transparent conductive layer with a thickness of 20 nm by the sputtering method, and forms the first layer in the X direction by etching. 1 electrode pattern.

[0563] Next, as an insulating layer arranged between the electrode patterns, SiO 2 A film was formed, an ITO film was formed thereon by sputtering so as to have a thickness of 20 nm, and a second electrode pattern was formed in the Y direction by etching. Furthermore, SiO was sputtered to a thickness of 200nm 2 Formed into a film as an insulating layer. Next, heat treatment (annealing) was performed at 150° C. for 30 minutes to lower the resistance value, and optical compensation films 201 to 204 having transparent conductive layers corresponding to optical compensation films 104 , 110 , 112 , and 114 were produced.

[0564] Image 6 >

[0565] The pol...

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Abstract

The problem to be solved by the present invention is to provide: a liquid crystal display device with a touch panel, equipped with a vertical alignment (VA) mode liquid crystal cell and having outstanding frontal contrast; and a method for manufacturing such display device. This liquid crystal display device with a touch panel is equipped, on the visible side of a VA mode liquid crystal cell, witha touch panel module with an integrated polarizing plate having a transparent conductive layer, and is characterized in that the touch panel module with the integrated polarizing plate having the transparent conductive layer comprises, in order from the VA mode liquid crystal cell to the visible side, an optical compensation film having a transparent conductive layer on at least one surface thereof, a polarizer, and a protective film, and in that the glass transition temperature Tg of the optical compensation film is in the range 155-250 DEG C.

Description

technical field [0001] The invention relates to a liquid crystal display device with a touch panel and a manufacturing method thereof. In more detail, it is related with the liquid crystal display device with a touch panel excellent in front contrast, and its manufacturing method. Background technique [0002] In recent years, the popularity of liquid crystal display devices equipped with touch panels has been increasing, and it is expected to continue to increase in the future. [0003] For example, in a capacitive touch panel module used in a touch panel, an X electrode pattern extending in the X direction using a transparent conductive layer (also referred to as a transparent electrode) is formed on a transparent substrate, and an X electrode pattern using another transparent conductive layer is formed. A Y electrode pattern extending in the Y direction. When the surface of the touch panel is touched with a finger, the X electrode pattern comes into contact with the Y e...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02B5/30G02F1/1335G02F1/13363G06F3/041G06F3/044
CPCG02F1/1333G02F1/1335G02F1/13363G02B5/30G06F3/041G06F3/0445G06F2203/04103
Inventor 森井里志
Owner KONICA MINOLTA INC
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