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Touch screen, touch panel, and display device including the same

A touch screen, touch panel technology, applied in the input/output process of data processing, instruments, electrical digital data processing and other directions, can solve the problems of difficult to produce the electric field change of the column wiring for detection, low touch detection sensitivity, etc., to reduce wiring inter-capacitance, reducing the effect of crossover

Active Publication Date: 2013-08-14
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, in a structure in which the capacitance (electric field coupling) between the wiring harnesses in the column direction and the wiring harness in the row direction is large, such as the structure in which the detection method disclosed in Patent Document 3 is applied to the touch screen disclosed in Patent Document 2, it is difficult to generate Changes in the electric field between the column wires for detection and the row wires for detection in response to a touch by a pointer such as a finger, that is, changes in capacitance between row and column wires
Therefore, when the mutual capacitance detection method is applied to such a structure, there is a problem that the detection sensitivity of the touch is low.

Method used

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  • Touch screen, touch panel, and display device including the same
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Examples

Experimental program
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Embodiment approach 1

[0079] figure 1 It is a plan view schematically showing the configuration of the touch screen 1 included in the touch panel according to Embodiment 1 of the present invention. Below, refer to figure 1 The configuration and the like of the touch panel 1 according to the present embodiment will be described below. In addition, the reference signs attached|subjected to the structural element demonstrated in this embodiment are attached|subjected to the same or similar structural element as the said structural element also in Embodiment 2,3.

[0080] Such as figure 1 As shown, the touch screen 1 includes: a base substrate 12 as a transparent substrate made of transparent glass material or transparent resin; (1) in the column direction (equivalent to figure 1 A plurality of detection column wirings 2 extending in the y direction); (2) in the row direction (equivalent to figure 1 A plurality of detection row wirings 3 extending in the x direction). Furthermore, a plurality of d...

Embodiment approach 2

[0152] Embodiment 2 of the present invention differs from Embodiment 1 in the shapes of column wiring 2 for detection and row wiring 3 for detection provided in block regions C1 , C2 , R1 , and R2 .

[0153] Figure 15 It is an enlarged view around the grid A in this embodiment. Here, similarly to Embodiment 1, a plurality (here, four) of square-shaped block regions C1 , C2 , R1 , and R2 obtained by dividing the grid A are defined. Only the column wiring 2 for detection is provided in each of one block region), and only the row wiring 3 for detection is provided in each of the block regions R1 and R2 (second block region). In addition, the block regions C1 and C2 provided with the column wires 2 for detection and the block regions R1 and R2 provided with the row wires 3 for detection are alternately arranged in the column direction y and the row direction x as a whole to form a checkered pattern.

[0154] Furthermore, as in Embodiment 1, in one grid A, only the Figure 16 O...

Embodiment approach 3

[0183] In Embodiments 1 and 2 above, the detection column wiring 2 provided in each block area C1, C2 constituting the grid A includes two sets of first and second zigzag wiring 2a, 2b. The detection row wiring 3 provided in each block region R1, R2 of A includes two sets of fifth and sixth meander wirings 3a, 3b. However, the set of these zigzag wirings included in each block area is not limited to two sets, and it can be implemented in the same way even if it is three or more sets. Therefore, in this embodiment, a description will be given of the configuration of groups including odd groups (three groups in this case) of these zigzag wirings.

[0184] Figure 25 It is an enlarged view around the grid A in this embodiment. Here, similarly to Embodiments 1 and 2, a plurality of (here, four) quadrangular block regions C1 , C2 , R1 , and R2 obtained by dividing the grid A are defined, and the block regions C1 , C2 Only the column wiring 2 for detection is provided in each (fi...

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Abstract

The invention relates to a touch screen, a touch panel, and a display device including the same that can reduce a capacitance between a column direction wire bunch and a row direction wire bunch in the touch panel, thereby further reducing dummy row direction wire bunches and broken lines of the dummy row direction wire bunches. In a touch screen 1, the number of dummy column block region patterns is made smaller than the number of plurality of detection block region patterns. The plurality of detection block region pattern are obtained as a result of dividing a crossing region A where a column direction wire bunch 6 and a row direction wire bunch 7 cross each other. The dummy column block region patterns are obtained as a result of dividing a crossing region where a dummy column direction wire bunch 23 and a row direction wire bunch 7 cross each other.

Description

technical field [0001] The present invention relates to a touch screen, a touch panel, and a display device including the same. Background technique [0002] Conventionally, a touch panel that detects the touch of a pointing body such as a finger and specifies the coordinates of the touched position has attracted attention as a superior interface unit. For this touch panel, various methods such as a resistive film method and a capacitive method have been proposed and commercialized. [0003] As one of such capacitive touch panels, a projected capacitive touch panel disclosed in Patent Document 1 is known. In this projected capacitive touch panel, even if the front side of the touch screen incorporating the touch sensor is covered with a protective plate such as a glass plate about several millimeters thick, it is possible to detect a touch of a finger or the like on the protective plate. Such a touch panel has advantages such as superior robustness, detection of a touch ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/044G06F2203/04111G06F3/0445G06F3/0446G06F3/0448
Inventor 今村卓司中村达也森成一郎宫山隆上里将史中川直纪大野岳
Owner MITSUBISHI ELECTRIC CORP
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