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Fingerprint identification module under LCD screen, LCD device and terminal device

A fingerprint identification module and technology of the module, applied in the field of fingerprint identification, can solve the problems affecting the integrity of the fingerprint image and the difficulty in completing the fingerprint identification process, and achieve the effect of promoting the smooth completion and ensuring the integrity.

Active Publication Date: 2019-06-07
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the existence of the prism film, the fingerprint image will be divided from the middle, which affects the integrity of the fingerprint image and makes the fingerprint identification process difficult to complete

Method used

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  • Fingerprint identification module under LCD screen, LCD device and terminal device
  • Fingerprint identification module under LCD screen, LCD device and terminal device
  • Fingerprint identification module under LCD screen, LCD device and terminal device

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Embodiment Construction

[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0039]The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances su...

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Abstract

The invention provides a fingerprint identification module under an LCD screen. wherein a backlight module is arranged above the LCD screen lower fingerprint recognition module, the backlight module comprises a first prism film, the LCD screen lower fingerprint recognition module comprises a first optical sensor and a first lens, and the projection of the first lens in the vertical direction is located in the edge area of the first optical sensor; The first lens is used for receiving reflected light generated by fingerprints and focusing the reflected light to the first optical sensor, the first optical sensor is used for converting the reflected light into electric signals, and the electric signals are used for generating fingerprint images. Therefore, the integrity of the fingerprint image is ensured, and the fingerprint identification process is promoted to be smoothly completed.

Description

technical field [0001] The present application relates to the technical field of fingerprint identification, and in particular to an under-LCD fingerprint identification module, an LCD device and a terminal device. Background technique [0002] Fingerprint recognition technology is often used in the display screens of smart terminals such as mobile phones and tablet computers. In the future, Liquid Crystal Display (LCD) screens will occupy a place in the field of display screens. [0003] Among them, the LCD screen includes from top to bottom: a glass plate, a liquid crystal layer, a backlight module, and a fingerprint recognition module under the LCD screen. From top to bottom, it includes: prism film, uniform light film, light guide plate, reflective film and steel plate. The function of the prism film is to use the principle of refraction and total reflection to concentrate the dispersed light at a certain angle and emit it from the backlight. The fingerprint identific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G02F1/1333
CPCG02F1/1333
Inventor 张玮周飞李顺展
Owner SHENZHEN GOODIX TECH CO LTD
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