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Touch substrate, driving method thereof, and display device

A substrate and touch technology, which is applied in the fields of instruments, computing, and electrical digital data processing, etc., can solve the problems of high power consumption and low anti-counterfeiting characteristics of devices, and achieve the effect of reducing power consumption and improving anti-counterfeiting

Active Publication Date: 2019-11-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a touch substrate, a driving method thereof, and a display device to solve the problem of relatively low anti-counterfeiting characteristics of the optical fingerprint recognition device itself in the prior art. And full-screen fingerprint scanning will inevitably bring about a big problem with the power consumption of the device.

Method used

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  • Touch substrate, driving method thereof, and display device
  • Touch substrate, driving method thereof, and display device
  • Touch substrate, driving method thereof, and display device

Examples

Experimental program
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Embodiment 1

[0031] to combine figure 1 and 2 As shown, the present embodiment provides a touch control substrate, which includes: a base, a plurality of drive signal lines GATE, a plurality of signal read lines Read Line arranged on the base; a plurality of drive signal lines GATE and a plurality of signal read lines The lines ReadLine are intersected, and a fingerprint sensing module is arranged in the area defined by the crossing position; each fingerprint sensing module includes a switch unit 1 and a fingerprint sensing device 2; wherein, the fingerprint sensing module in each fingerprint sensing module The first electrode 21 of the detection device 2 is connected to the switch unit 1, and the second electrode 22 of the fingerprint sensing device 2 in the same row is connected to the same common electrode line VD; each switch unit 1 is connected to the corresponding driving signal line GATE and signal The read line Read Line; the second electrode 22 of the fingerprint sensing device 2...

Embodiment 2

[0042] This embodiment provides a method for driving a touch substrate, and the touch substrate may be any one of the touch substrates in Embodiment 1. The driving method includes a touch control phase and a fingerprint scanning phase.

[0043] Among them, the touch stage: the second electrode 22 of the fingerprint sensing device 2 connected to it provides a touch scanning signal through the common electrode line VD; The feedback signal output by the two electrodes 22 is used to determine the position of the touch point.

[0044] Fingerprint identification stage: input the working level signal to the driving signal line GATE, so that the corresponding switch unit 1 is opened, and the second electrode 22 of the fingerprint sensing device 2 connected thereto is provided with a common voltage signal through the common electrode line VD; and according to The sensing signal on the first electrode 21 connected to the first electrode 21 through the switch unit 1 read by the line is ...

Embodiment 3

[0050] to combine Figure 4 As shown, this embodiment provides a display device, which includes the touch substrate in Embodiment 1.

[0051] Wherein, the display device is preferably an organic electroluminescent display device, which includes an organic electroluminescent backplane 4 disposed opposite to the touch substrate. Among them, the organic electroluminescent backplane 4 generally includes a substrate and an organic electroluminescent device 41 arranged on the substrate, any two adjacent light-emitting units are separated by a barrier wall 42, and the organic electroluminescent device 42 is set in the peripheral area. The encapsulation layer 5 is used to seal the organic electroluminescent device, so as to prevent the organic electroluminescent device 42 from being polluted by external air and moisture.

[0052] Wherein, the fingerprint sensing module on the touch substrate is arranged on the side of the touch substrate close to the organic electroluminescent backpl...

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Abstract

The invention provides a touch substrate, a driving method thereof and a display device and belongs to the technical field of display. The problem that an optical fingerprint recognizer itself is comparatively low in anti-fake performance and the problem that full-screen fingerprint scanning inevitably brings high power consumption to devices in the prior art. The touch substrate comprises a base, multiple driving signal lines and multiple signal reading lines, the driving signal lines and the signal reading lines are arranged on the base in a crossed manner, and fingerprint sensing modules are arranged in areas limited by crossed positions; each fingerprint sensing module comprises a switch unit and a fingerprint sensing device, each switch unit is connected with the corresponding driving signal line and the corresponding signal reading line, second electrodes of fingerprint sensing devices positioned in a same row are multiplexed as touch driving electrodes at a touch stage, and the signal reading lines are multiplexed as touch sensing electrodes at the touch stage.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a touch substrate, a driving method thereof, and a display device. Background technique [0002] Due to the uniqueness and lifelong invariant characteristics of human fingerprints, fingerprint recognition technology has become one of the most important and common applications in biometrics. Nowadays, fingerprint recognition has become the standard equipment of mobile display devices. Most of the fingerprint recognition on existing mobile display devices adopts capacitive recognition technology. Due to the limited distance, most of the fingerprint modules of the existing devices use the opening or thinning of the display device mold, so that the existing technology can only realize the identification of a single point fixed position, which greatly limits people's experience. [0003] Therefore, a series of improved recognition distances and fingerprint recognition te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/042
CPCG06F3/0416G06F3/0423
Inventor 刘伟董学吕敬王海生吴俊纬丁小梁刘英明许睿李昌峰贾亚楠赵利军韩艳玲王鹏鹏曹学友郭玉珍
Owner BOE TECH GRP CO LTD
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