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display device

A display device and display function technology, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of noise reduction, insufficient noise generation, difficulty in providing high-sensitivity touch sensing technology, etc., to reduce noise, simplify The effect of wiring construction

Active Publication Date: 2021-10-01
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

The liquid crystal display device (LCD1, LCD2, LCD3) of the present invention comprises a display device substrate (100), an array substrate (200), and a display function layer (300) sandwiched between the display device substrate (100) and the array substrate (200). ), and the control unit (120). The display device substrate (100) includes touch sensor wiring (3). The array substrate (200) is equipped with: a common electrode (17), which is arranged in each of the plurality of pixel openings (18), and has more than one electrode portion (17A); a conductive wiring (30), on the second insulating layer (12 ) is electrically connected to the common electrode (17) and crosses a plurality of pixel openings (18); the active element (28), which is a thin film transistor with a top gate structure, is arranged under the third insulating layer (13), and The pixel electrode (20) is electrically connected; the gate wiring (10) has the same layer structure as the conductive wiring (30), and is formed at the same position as the conductive wiring (30) between the second insulating layer and the third insulating layer , and extend along the second direction when viewed from above, and electrically interlock with the active element; and the contact hole (H) is arranged in the center of the longitudinal direction of the pattern of the electrode portion (17A), and the common electrode (17A) ) is electrically connected to the conductive wiring (30). The touch sensing wiring (3) and the common electrode (17) face each other in an oblique direction relative to the thickness direction of the display function layer (30).

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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Patent Type & Authority Patents(China)
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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