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Backlight module and display device

A backlight module and display device technology, applied in optics, nonlinear optics, instruments, etc., can solve the problem of low fingerprint recognition accuracy and achieve the effect of improving penetration ability and fingerprint recognition accuracy

Active Publication Date: 2020-09-11
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fingerprint recognition accuracy is proportional to the light intensity received by the fingerprint recognition module. If the light guide plate has low penetration ability to infrared light, the fingerprint recognition accuracy will not be high.

Method used

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  • Backlight module and display device
  • Backlight module and display device
  • Backlight module and display device

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Embodiment Construction

[0022] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation...

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Abstract

The invention discloses a backlight module and a display device. The backlight module comprises a fingerprint recognition area and a non-fingerprint recognition area. The backlight module comprises alight guide plate, the light guide plate comprises a light emitting surface and a bottom surface which are oppositely arranged, the bottom surface is provided with first protrusions and second protrusions, the multiple first protrusions are located in the fingerprint recognition area, the multiple second protrusions are located in the non-fingerprint recognition area, and the duty ratio of the first protrusions distributed in the unit area is smaller than that of the second protrusions distributed in the unit area. According to the embodiment of the invention, the penetration capability of thefingerprint recognition area of the light guide plate to red light can be improved, so that the fingerprint recognition precision is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] In recent years, with the popularity of mobile display products, information security has attracted much attention from consumers. Fingerprint recognition is unique and difficult to copy, and is widely used in unlocking of mobile display products, payment confirmation, etc. [0003] The display panel in the liquid crystal display cannot emit light, and the light source provided by the backlight module is needed to realize the display function. A backlight module usually includes a light source and a light guide plate. The fingerprint identification module can be arranged on the side of the light guide plate facing away from the display panel, and the infrared light reflected by the finger passes through the light guide plate to reach the fingerprint identification module. The fingerprint recognition accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133606
Inventor 陈星
Owner XIAMEN TIANMA MICRO ELECTRONICS