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Touch-panel-equipped 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 problems such as cracks in electrode patterns, and achieve the effect of preventing cracks

Active Publication Date: 2014-12-17
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, it is required to secure space for further weight reduction and battery capacity, and the capacitive touch panel module disclosed in Patent Document 2 includes a pair of transparent conductive films in directions perpendicular to each other and uses a glass substrate as a touch surface. Use only 1 glass substrate
Therefore, it has the advantage of being thinner as a whole, but there is a problem that cracks may occur in the ITO electrode pattern due to the force applied in the manufacturing process when only one glass substrate is used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0388]

[0389] An ITO film was formed on tempered glass with a thickness of 20 nm by a sputtering method, and a first electrode pattern in the X direction was formed by etching.

[0390] Next, as an insulating layer arranged between the electrode patterns, SiO2 is formed into a film with a thickness of 200 nm by sputtering, and an ITO film is formed on top of it with a thickness of 20 nm by sputtering, and a grid pattern is formed by etching. A second electrode pattern in the Y direction is formed. Then, as an insulating layer, SiO was sputtered 2 Film formation was performed with a thickness of 200 nm.

[0391] It was connected to a control circuit via lead wires prepared by coating and firing Ag paste on the formed ITO electrode patterns in the X direction and Y direction, respectively.

[0392] Next, the glass-scattering prevention film (cellulose ester film A1) produced under the following conditions was cut out, and it bonded on the 2nd electrode pattern via the adhe...

Embodiment 2

[0477]

[0478] On the respective surfaces of the cellulose ester films A1 to A5, COP films, PC films, and PET films prepared above, the following hard coat composition 1 was coated with a 0.4 μm pore size film using an extrusion coater. The solution filtered through a polypropylene filter was dried at a temperature of 80°C, and then cleaned with nitrogen so that the oxygen concentration was 1.0% by volume or less, and the illuminance of the irradiated part was 100mW / cm using an ultraviolet lamp. 2 , so that the irradiation dose is 0.25J / cm 2 Then, the coating layer was cured to form a hard coat layer 1 having a dry film thickness of 3 μm, and was wound up to produce roll-shaped hard coat films A1H to A5H, COP film H, PC film H, and PET film H.

[0479]

[0480] The following materials were stirred and mixed to form a hard coat coating composition 1 .

[0481] pentaerythritol tri / tetraacrylate

[0482] (NK Ester A-TMM-3L, manufactured by Shin-Nakamura Chemical Industry C...

Embodiment 3

[0493] Using the liquid crystal display devices 1 to 13 with a touch panel prepared in Example 1, the liquid crystal display parts were observed without wearing polarized sunglasses. As a result, there was no problem at all levels, especially in terms of visibility.

[0494] Wearing polarized sunglasses to observe the liquid crystal display part, as a result, the liquid crystal display devices 11-13 with touch panels of the comparative examples have poor visibility, and the liquid crystal display devices 1, 2, 6-10 with touch panels of the present invention Since the retardation value of the anti-glass scattering film is within a preferable range, and it is bonded to a liquid crystal display panel at a preferable angle, there is no defect in the image and the visibility is good. In the liquid crystal display devices 3 to 5 with a touch panel according to the present invention, the retardation value of the glass scatter prevention film was insufficient, which may be the result o...

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Abstract

The objective of the present invention is to provide: a touch-panel-equipped liquid crystal display device that has a shatterproof function with respect to glass substrate breakage and in which the occurrence of cracks in ITO electrodes is prevented; and a touch-panel-equipped liquid crystal display device that has excellent viewability even when the display is observed through polarizing sunglasses. This touch-panel-equipped liquid crystal display device is a touch-panel-equipped liquid crystal display device comprising a touch panel module and a liquid crystal display panel, and being characterized in that: the touch panel module includes a glass substrate on the outermost surface, a pair of transparent electroconductive films formed in a grid pattern in an X direction and a Y direction orthogonal thereto, and a glass shatterproofing film provided on the upper surface of the transparent electroconductive films; and the direction of the maximum elasticity modulus of the glass shatterproofing film is in a direction oblique to the X direction or the Y direction of said pair of transparent electroconductive films formed in a grid pattern.

Description

technical field [0001] The invention relates to a liquid crystal display device with a touch panel used in mobile phones and signs. In more detail, it is related with the liquid crystal display device with a touch panel which prevents the crack generation|occurrence|production of the anti-scatter with respect to the crack of a glass substrate, and ITO electrode. Background technique [0002] In recent years, as various electronic devices such as mobile phones, portable terminals, and personal computers have become more sophisticated and diversified, touch panels have been actively used as one of input means to these electronic devices. There are various types of touch panels, but there is a capacitive touch panel module that is translucent and can be mounted via an adhesive layer on the front of a liquid crystal display panel of an electronic device. [0003] Conventionally, a plastic sheet with high translucency has been used on the surface of the information display porti...

Claims

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Application Information

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IPC IPC(8): G06F3/041G02B1/10G02B5/30G02F1/1333G02F1/1335G06F3/044
CPCG02B1/11G02F1/13338G02F2201/503G02F1/133331
Inventor 别宫启史梅田博纪
Owner KONICA MINOLTA INC
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