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Display panel and display device

A technology of display panel and electrode plate, which is used in identification devices, static indicators, instruments, etc., can solve the problems of high pixel circuit density and low quality of fingerprint imaging under the screen.

Active Publication Date: 2020-06-16
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with the continuous improvement of display requirements, the pixel density (Pixels Per Inch, PPI for short) and pixel circuit density of the display panel are relatively high, which causes the light reflected to the fingerprint recognition unit to be blocked during fingerprint recognition, and the fingerprint recognition under the screen is blocked. Overall image quality is poor

Method used

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  • Display panel and display device
  • Display panel and display device
  • Display panel and display device

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Embodiment Construction

[0027] 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 only some 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 making creative efforts belong to the protection scope of the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these feat...

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Abstract

The invention provides a display panel and a display device. The fingerprint identification area of ​​the display panel includes a substrate layer and a pixel circuit; the pixel circuit includes a DTFT unit, a source wire, a drain wire and a capacitor unit arranged on the substrate layer. ; The source region of the DTFT unit is connected to the source line, the drain region of the DTFT unit is connected to the drain line, and the channel region of the DTFT unit and the drain line are light-transmitting regions; wherein, the channel region of the DTFT unit is in the The projection of the substrate layer, close to the projection of the source wiring on the substrate layer, reduces the gap width between the channel region and the source wiring of the DTFT unit, and increases the gap between the channel region and the drain wiring of the DTFT unit. The distance between them increases the light-transmitting area of ​​a single light-transmitting region; the projection of the capacitor unit on the substrate layer covers the projection of the channel region on the substrate layer, thereby reducing the traces between the channel region and the source electrode The diffraction between the gaps improves the image quality of fingerprints under the screen.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. Background technique [0002] With the development of display technology, in order to improve user experience, the fingerprint recognition under the screen can be realized by multiplexing the display area of ​​the display panel as a fingerprint recognition area. When a user performs a fingerprint recognition operation on a display device with an under-screen fingerprint recognition function, he only needs to touch the fingerprint recognition area of ​​the display screen with his finger, and the display device can detect the user's fingerprint information. [0003] The way in which the display panel in the prior art realizes the fingerprint identification under the screen is usually to embed the fingerprint identification unit in the substrate of the display panel. When performing fingerprint identification, the user's finger touches...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/20G06K9/22G06K9/24G09F9/00G09G3/20G06V10/12G06V10/147
CPCG09G3/20G09F9/00G06V10/17G06V10/12G06V10/147H01L27/14678G06V40/1318H01L27/1222H01L27/124H10K59/1216H10K59/131H01L25/167H01L27/1218H01L27/1255H01L27/156
Inventor 秦旭宋艳芹李威龙张露
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD