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Display device and electronic device with touch detection function

A touch detection and display device technology, applied in electrical digital data processing, the input/output process of data processing, instruments, etc., can solve the problem of the edge of the display area becoming larger, and achieve the effect of suppressing connection resistance

Inactive Publication Date: 2017-04-12
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the selection switch is increased, there is a possibility that the margin that does not affect the display area becomes larger

Method used

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  • Display device and electronic device with touch detection function
  • Display device and electronic device with touch detection function
  • Display device and electronic device with touch detection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] [configuration example]

[0066] (Overall configuration example)

[0067] figure 1 It is a block diagram showing a configuration example of the display device with a touch detection function according to the first embodiment. The display device 1 with a touch detection function includes a display unit 10 with a touch detection function, a control unit 11 , a gate driver 12 , a source driver 13 , a source selector unit 13S, a drive electrode driver 14 , and a touch detection unit 40 . The display device 1 with a touch detection function is a display device in which a display unit 10 with a touch detection function incorporates a touch detection function. The display unit 10 with a touch detection function is a so-called In-cell (touch panel function is embedded liquid crystal pixel) type device. In addition, the display unit 10 with a touch detection function may be a so-called on-cell (touch panel function) in which a capacitive touch detection device 30 is mounted ...

Embodiment approach 2

[0162]Next, the display device 1 with a touch detection function according to Embodiment 2 will be described. Figure 23 It is a diagram showing an example of the control device of the display device with a touch detection function according to the second embodiment. Figure 24 It is a block diagram showing the drive unit of the drive electrode driver according to the second embodiment. Figure 25 It is a block diagram showing an arrangement example of selection switches for driving electrode drivers according to the second embodiment. In addition, the same code|symbol is attached|subjected to the same component as what was demonstrated in the said 1st Embodiment, and repeated description is abbreviate|omitted. Figure 25 as well as Figure 26 Although the configuration of the first gate driver 12A side has been described, the configuration of the second gate driver 12B is also the same.

[0163] Such as Figure 23 As shown, the pixel substrate 2 is located on the surface ...

Embodiment approach 3

[0171] Next, the display device 1 with a touch detection function according to Embodiment 3 will be described. Figure 26 It is a block diagram showing the drive unit of the drive electrode driver according to the third embodiment. Figure 27 It is a block diagram showing an arrangement example of selection switches for driving electrode drivers according to the third embodiment. In addition, the same reference numerals are assigned to the same constituent elements as those described in the above-mentioned first embodiment and second embodiment, and repeated descriptions are omitted. Figure 25 as well as Figure 26 Although the driving electrode driver on the side of the first gate driver 12A has been described, the configuration of the second gate driver 12B is also the same.

[0172] Such as Figure 23 As shown, in the third embodiment, the pixel substrate 2 is also located on the surface of the TFT substrate 21 of the transparent insulating substrate (such as a glass su...

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Abstract

The present invention provides a display device and electronic equipment with a touch detection function capable of suppressing the connection resistance of a selection switch for selecting a drive electrode to which a drive signal is applied and narrowing the edge. A display device with a touch detection function includes a touch detection electrode facing a drive electrode and forming an electrostatic capacitance therebetween, and detects the position of an approaching object based on a detection signal from the touch detection electrode. The display device with touch detection function includes: a plurality of switch groups arranged corresponding to the driving electrodes, each including a plurality of selection switches, and the plurality of switch groups select the driving electrodes connected to the touch wiring according to the selection signal of the control device. A plurality of selection switches for each driving electrode are connected in parallel between the touch wiring and the driving electrodes, and operate corresponding to each driving electrode according to a selection signal, thereby connecting the touch wiring and the driving electrodes, and applying a touch driving signal.

Description

technical field [0001] The present invention relates to a display device and an electronic device capable of detecting an external approaching object, and more particularly, to a display device and an electronic device with a touch detection function capable of detecting an external approaching object approaching the outside based on a change in electrostatic capacitance. Background technique [0002] In recent years, a touch detection device capable of detecting an external approaching object called a touch panel has attracted attention. The touch panel is used in a display device with a touch detection function in which a touch detection device is mounted on or integrated with a display device such as a liquid crystal display device. In addition, the display device with a touch detection function can display various button images and the like on the display device, so that information input can be performed using a touch panel instead of normal mechanical buttons. Since s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/04164G06F3/04166G06F3/0445G06F3/0446G06F3/04184
Inventor 福岛俊明
Owner JAPAN DISPLAY INC
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