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Display panel, driving method and display device

A display panel, light-sensing technology, applied in static indicators, character and pattern recognition, print image acquisition, etc., can solve the problem of low sensitivity of light-sensing detection circuits, and achieve the effect of improving sensitivity

Active Publication Date: 2021-12-28
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current photosensitive detection circuit used for fingerprint recognition has low sensitivity

Method used

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

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless th...

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Abstract

Embodiments of the present invention provide a display panel, a driving method, and a display device, which relate to the field of display technology and can improve the sensitivity of a photodetection circuit. The driving method is used in a photosensitive detection circuit, the photosensitive detection circuit includes a photosensitive unit, and the photosensitive unit includes: a first transistor, a second transistor, a third transistor, a photodiode and a first capacitor, a first reading period, and a reset The control terminal provides a cut-off level to control the first transistor to be cut off, and the read control terminal provides a conduction level to control the third transistor to be turned on. The second transistor generates a leakage current under the control of the second node and transmits it to the transistor through the third transistor. Data reading end; from the first reading period to the second reading period, if the first pole of the photodiode is the anode, and the second pole of the photodiode is the cathode, then the potential of the first node will gradually decrease, if the first pole of the photodiode The pole of the photodiode is the cathode, and the second pole of the photodiode is the anode, so the potential of the first node increases gradually.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel, a driving method and a display device. Background technique [0002] In recent years, with the continuous development of display technology, more and more display devices adopt fingerprint recognition to realize user privacy protection. When a user operates a display device with a fingerprint identification function, he only needs to touch the display screen with his finger to realize authority verification, and the operation is simple. [0003] However, the sensitivity of the photosensitive detection circuit currently used for fingerprint recognition is low. Contents of the invention [0004] Embodiments of the present invention provide a display panel, a driving method and a display device, which can improve the sensitivity of a photodetection circuit. [0005] On the one hand, an embodiment of the present invention provides a display panel, includ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G09G3/20
CPCG09G3/20G06V40/1318
Inventor 卢峰马从华
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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