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Display device

A technology for display devices and display functions, which is applied in the directions of identification devices, instruments, and acquisition/organization of fingerprints/palmprints, etc., and can solve problems such as uneven display of display panels

Active Publication Date: 2021-02-02
YUNGU GUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing display devices for photosensitive fingerprint recognition, there is a problem of uneven display on the display panel.

Method used

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0030] As mentioned in the background, in the existing display devices for optical fingerprint recognition, there is a problem of non-uniform display on the display panel. The inventors have found through research that the reason for the above problems is that the existing display devices for light-sensitive fingerprint recognition usually include a display function layer for display, and the display function layer usually includes a pixel circuit for driving a light-emitting device to emit light. The circuit incl...

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Abstract

The embodiment of the invention discloses a display device, and the display device comprises: a display function layer which comprises a thin film transistor array; the light sensing device that is located in the fingerprint identification area; the optical collimation structure layer that comprises an optical collimation structure, and the optical collimation structure comprises an optical wave plate; the optical wave plate is used for reducing the intensity difference of light emitted to the film layer on the side, away from the light-emitting device layer, of the thin film transistor arrayand reflected to the display function layer on the unit area of the fingerprint recognition area and the non-fingerprint recognition area. After the light reflected by the finger reaches the optical wave plate, energy loss occurs at the optical wave plate, and the intensity of the light reflected by the optical wave plate is weaker than that of incident light, so that the intensity difference of light reflected by a film layer on the side, away from a light-emitting device layer, of a thin film transistor array on the unit area of a fingerprint recognition area and a non-fingerprint recognition area can be reduced, and then the display uniformity of the display panel is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technologies, and in particular, to a display device. Background technique [0002] With the development of display technology, under-screen recognition technology has become one of the main fingerprint recognition technologies. [0003] Among the existing under-screen fingerprint recognition technologies, light-sensitive fingerprint recognition technology is the main means of implementation. This technology relies on the local strong light emitted by the display screen to transmit the user's fingerprint information to the fingerprint optical sensor located under the display module, and the sensor converts the optical signal with fingerprint information into an electrical signal for identification. [0004] However, in the existing display devices for photosensitive fingerprint recognition, there is a problem of non-uniform display on the display panel. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G09F9/30G09F9/33H01L27/32
CPCG09F9/30G09F9/33G06V40/13G06V40/1318H10K59/00H10K59/12
Inventor 赵东方
Owner YUNGU GUAN TECH CO LTD