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Display equipment for fingerprint identification

A fingerprint identification and display technology, applied in the field of communication, can solve the problems of target feedback optical signal loss, optical noise pollution, non-directional scattering, etc., achieve the recognition and display effect of fingerprint identification functions in the screen, and maintain luminous brightness and uniformity , Improve the effect of utilization and brightness

Inactive Publication Date: 2020-03-31
SHENZHEN LONGLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the optical signal used to collect biological fingerprint information passes through the traditional brightness enhancement film, especially the prism structure of the traditional brightness enhancement film, it will cause aggregation and non-directional scattering, resulting in the loss of the target feedback optical signal or serious optical noise pollution.

Method used

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  • Display equipment for fingerprint identification
  • Display equipment for fingerprint identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First, please refer to Figure 4-6 , the display of Embodiment 1 of the present invention will be described. According to the display of Embodiment 1 of the present invention, it includes an LCD display module and a fingerprint identification device 13 to identify optical signals of biological fingerprints; wherein, the LCD display module includes an LCD display screen 11 and a backlight module 12; the backlight module includes a light source 124, the light guide plate 123 arranged on one side of the light source 124, the reflection sheet 125 arranged below the light guide plate 123, the diffusion sheet 122 arranged above the light guide plate 123, and the Brightening sheet 121.

[0035] The brightness enhancement film 121 of the display for fingerprint identification in this embodiment has a high transmittance for single-sided incident light without a prism structure, effectively increases the diffusion of visible light, and makes the light produce a collimation effec...

Embodiment 2

[0041] Please refer to Figure 7 , is a cross-sectional view of a multilayer structure graded-refractive-index brightness enhancement film of a display for fingerprint identification according to Embodiment 2 of the present invention. The similarities and differences between Embodiment 2 and Embodiment 1 will be described below. figure 2 The structure of the multilayer optical film comprises five layers of positive refractive index microlayers 201, 202, 203, 205, 206 and one layer of negative refractive index microlayers 204. The upper surface of the positive refractive index microlayer 201 is the first One surface, the lower surface of the positive refractive index microlayer 206 is the second surface. In Example 2 of the present invention, the effect of light passing through a multi-layer laminate with different positive refractive index microlayers and negative refractive index microlayers is as follows: Figure 5 shown. The negative index microlayer 204 exhibits a refr...

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Abstract

The invention discloses a display for fingerprint identification. The display comprises an LCD display module and a fingerprint identification device. The LCD display module comprises an LCD display screen and a backlight module; the backlight module comprises a light source, a light guide plate arranged on one side of the light source, a reflector plate arranged below the light guide plate, a diffusion sheet arranged above the light guide plate, and a brightness enhancement film arranged above the diffusion sheet, wherein the brightness enhancement film is an optical film with a multi-layer structure, the brightness enhancement film comprises a first surface, a second surface on the opposite side and N stacks of positive refractive index micro-layers, the first surface and the second surface are arranged in parallel, the stacks of the positive refractive index micro-layers are arranged between the first surface and the second surface and are arranged as adjacent micro-layers, the refractive indexes of the N positive refractive index microlayers from the first surface to the second surface are sequentially decreased progressively, and the first surface is provided with infrared transparent diffusion particles, so that the brightness enhancement film has high transmittance for visible light emitted from the second surface to the first surface.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a display device and an electronic device for fingerprint recognition in an LCD screen. Background technique [0002] Fingerprint sensing and matching is a reliable and widely used technology. A common method of fingerprint identification involves scanning a sample fingerprint or an image thereof and storing the image and / or unique characteristics of the fingerprint image, the characteristics of the sample fingerprint can be compared with information from reference fingerprints already present in a database to determine the correct identification of the user , for example for verification purposes. In particular, in-display fingerprint recognition is currently becoming more and more popular due to its ease of operation and versatility, and its suitability for compact portable electronic devices. [0003] Currently, in-screen fingerprint recognition display devices mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/13357G02B6/00G06K9/00
CPCG02F1/13338G02F1/133615G02B6/0051G02B6/0053G06V40/13
Inventor 张小齐彭益曾晓虎
Owner SHENZHEN LONGLI TECH CO LTD
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