Display device

A display device and display panel technology, applied in print image acquisition, instrumentation, computing, etc., can solve the problems of fingerprint line interference and reduce the accuracy of fingerprint recognition, so as to improve accuracy, reduce the probability of reflected light, and improve mutual recognition. interference effect

Active Publication Date: 2020-04-03
XIAMEN TIANMA MICRO ELECTRONICS
View PDF24 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to increase the viewing angle of the display device, the divergence angle of the backlight is large, that is, a certain position of the fingerprint will reflect the backlight at a large angle, so that the fingerprint recognition sensor hopes to judge the position only based on the reflected light at a certain position When the shape of the fingerprint is different, for example, it will receive the reflected light at the position of adjacent fingerprint lines at the same time, resulting in mutual interference between different fingerprint line positions, thereby reducing the accuracy of fingerprint recognition

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Display device
  • Display device
  • Display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms, unless the context c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to view more

Abstract

A display device provided by the embodiment of the invention relates to the technical field of display, and can reduce a backlight divergence angle of a fingerprint identification area, thereby improving the accuracy of fingerprint identification. The display device comprises a display panel and a backlight module, the backlight module comprises a light gathering film, and the light gathering filmis used for enabling an emergent light divergence angle to be smaller than an incident light divergence angle. The incident light divergence angle is an acute angle between the light from the side, deviating from the display panel, of the gathering film and a vertical line, the emergent light divergence angle is an acute angle between the light emitted to the side close to the display panel and the vertical line, and the vertical line is a straight line perpendicular to the plane where the display panel is located. In the direction perpendicular to the plane where the display panel is located, the orthographic projection of the light gathering film is overlapped with the orthographic projection of the fingerprint identification area, and the orthographic projection of the light gatheringfilm is not overlapped with the orthographic projection of a non-fingerprint identification area.

Description

Technical field [0001] This application relates to the field of display technology, and in particular to a display device. Background technique [0002] In the liquid crystal display device, in order to realize fingerprint recognition under the screen, a fingerprint recognition sensor is set in the display area. When the backlight reaches the surface fingerprint of the display device, it will reflect back to the fingerprint recognition sensor in it. The fingerprint recognition sensor is determined by the intensity of the reflected light. To determine whether the fingerprint corresponding to the position is a ridge or a valley, multiple fingerprint identification sensors work together to identify the fingerprint identification function. However, in order to increase the viewing angle of the display device, the divergence angle of the backlight is large, that is, a certain position of the fingerprint will reflect the backlight at a large angle, which causes the fingerprint recognit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G06K9/00
CPCG02F1/133615G06V40/1324G06V40/1318
Inventor 张军苏高佳陈国照
Owner XIAMEN TIANMA MICRO ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap