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Display device

A technology for display devices and display functions, applied in optics, instruments, electrical digital data processing, etc., can solve problems such as noise reduction, insufficient noise generation, difficulty in providing high-sensitivity touch sensing technology, etc., to reduce noise and simplify Effect of Wiring Construction

Active Publication Date: 2018-12-21
TOPPAN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The techniques disclosed in Patent Document 1 to Patent Document 8 do not sufficiently consider means for reducing noise caused by source wirings to which video signals for displaying individual video images are provided, and it is difficult to provide high-sensitivity touch sensing technology.
Moreover, it is insufficient in suppressing noise generation related to liquid crystal driving

Method used

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no. 2 Embodiment approach

[0321] use Figure 20 to Figure 25 A liquid crystal display device LCD2 of the second embodiment will be described. The same reference numerals are assigned to the same components as in the above-mentioned first embodiment, and description thereof will be omitted or simplified.

[0322] Figure 20 It is a plan view partially showing the array substrate 200 constituting the liquid crystal display device LCD2 according to the second embodiment of the present invention, and is a plan view viewed from the observer side.

[0323] Figure 21 It is a cross-sectional view partially showing the array substrate 200 constituting the liquid crystal display device LCD2 according to the second embodiment of the present invention, along the Figure 20 Sectional view of line D-D' shown.

[0324] Figure 22 It is a plan view partially showing a liquid crystal display device LCD2 according to the second embodiment of the present invention, and is a plan view showing a structure in which a ...

no. 3 Embodiment approach

[0344] use Figure 27 to Figure 29 The liquid crystal display device LCD3 of the third embodiment will be described.

[0345] The same reference numerals are assigned to the same components as in the above-mentioned first embodiment, and description thereof will be omitted or simplified.

[0346] Figure 27 It is a plan view partially showing the array substrate of the liquid crystal display device according to the third embodiment of the present invention. Figure 28 It is a plan view partially showing a display device according to a third embodiment of the present invention, and is a plan view showing a structure in which a display device substrate including color filters and touch sensor wiring is laminated on an array substrate via a liquid crystal layer, viewed from A top view from the side of the observer. Figure 29 It is a cross-sectional view partially showing the array substrate constituting the display device according to the third embodiment of the present inven...

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Abstract

A liquid-crystal display device (LCD1, LCD2, LCD3) according to the present invention includes: a display-device substrate (100); an array substrate (200); a display function layer (300) sandwiched between the display-device substrate (100) and the array substrate (200); and a control unit (120). The display-device substrate (100) includes touch sensing wiring lines (3). The array substrate (200)includes a common electrode (17) having one or more electrode sections (17A) provided individually at a plurality of pixel openings (18); conductive wiring lines (30) electrically connected to the common electrode (17) and crossing the plurality of pixel openings (18) under a second insulating layer (12); active elements (28) implemented by thin-film transistors having a top-gate structure, the active elements (28) being provided under a third insulating layer (13) and electrically connected to pixel electrodes (20); gate wiring lines (10) having the same layer configuration as the conductivewiring lines (30), formed between the second insulating layer and the third insulating layer at the same positions as the conductive wiring lines (30), and extending in a second direction in plan viewso as to be electrically linked with the active element; and contact holes (H) provided at the centers in the lengthwise direction of the patterns of the electrode sections (17A) and electrically interconnecting the common electrode (17) and the conductive wiring lines (30). The touch sensing wiring lines (3) and the common electrode (17) face each other in an oblique direction inclined relativeto the thickness direction of the display function layer (300).

Description

technical field [0001] The present invention relates to a display device capable of stable touch sensing and having high touch sensing sensitivity. Background technique [0002] Display devices equipped with a display function layer are used in large displays such as televisions, tablet PCs, and smartphones. A liquid crystal display device using liquid crystal as a display function layer often has a structure in which a liquid crystal layer is sandwiched between two transparent substrates such as glass. The main liquid crystal driving methods in such liquid crystal display devices can be roughly classified into VA (Vertical Alignment) mode known as the vertical electric field method, IPS (In-Plane Switching) mode known as the horizontal electric field method, or fringe field switching FFS. (Fringe Field Switching) mode. [0003] An organic EL device (OLED: Organic Light Emitting Diode) using an organic light emitting diode as a display function layer has attracted attentio...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02F1/1368G06F3/041G06F3/044
CPCG02F1/1333G02F1/1368G06F3/041G06F3/0446G06F3/0445G02F1/13338
Inventor 木村幸弘福吉健蔵伊藤大
Owner TOPPAN PRINTING CO LTD
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