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Display panel, driving method thereof and display device

A technology of display panel and driving circuit, applied in printing image acquisition, instrument, calculation, etc., can solve the problems of affecting the accuracy of fingerprints, poor anti-noise interference ability, and long wiring.

Active Publication Date: 2020-05-12
XIAMEN TIANMA MICRO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing photoelectric detection unit includes a selection switch and a light-sensitive fingerprint sensor, which is called a passive detection circuit. Although its structure is simple, its anti-noise ability is poor, especially when it is integrated behind the display panel. Problems such as crosstalk between traces make the final input to the driver chip more noisy, which affects the accuracy of fingerprint detection
Moreover, integrating the photoelectric detection unit in the display panel will increase the number of pins of the driver chip, which is not conducive to narrowing the frame of the display panel.

Method used

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  • Display panel, driving method thereof and display device
  • Display panel, driving method thereof and display device
  • Display panel, driving method thereof and display device

Examples

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Embodiment Construction

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0028] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0029] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a display panel, a driving method thereof and a display device, and relates to the technical field of display; and the display panel comprises a plurality of first signal output lines, a plurality of first signal input lines, a plurality of fingerprint recognition units arranged in an array, a plurality of touch electrodes arranged in an array and a driving circuit, and onetouch electrode corresponds to at least two fingerprint recognition units; one touch electrode is electrically connected with at least one first signal input line; the fingerprint identification unitcomprises a photodiode, a first electrode and a switch module, the first electrode of the photodiode is electrically connected with the switch module, the second electrode of the photodiode is electrically connected with the corresponding touch electrode, each switch module is electrically connected with one first signal output line, and the first electrode is electrically connected with the first electrode of the photodiode. According to the invention, wiring in the display panel can be reduced, the correct rate of fingerprint identification can be improved, and the narrow bezel of the display panel can be realized.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a display panel, a driving method thereof, and a display device. Background technique [0002] Fingerprints are inherent to everyone. With the development of technology, a variety of display devices with fingerprint recognition functions have appeared on the market, such as mobile phones, tablet computers, and smart wearable devices. Before operating a display device with a fingerprint recognition function, the user only needs to touch the display device with a finger to perform authorization verification, which simplifies the authorization verification process. Moreover, with the gradual increase in the application scenarios of the fingerprint recognition function, the fingerprint recognition area is gradually changed from Some areas have evolved into full-screen recognition. [0003] In the existing display devices based on optical fingerprint recognition tec...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/0416G06F3/044G06F3/041661G06F3/0443G06F3/0421G06F2203/04106G06F3/04164G06V40/1318G06F3/04144G06F3/0446G06V40/1306
Inventor 黄敏孙莹许育民
Owner XIAMEN TIANMA MICRO ELECTRONICS
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