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A display device with a built-in fingerprint recognition sensor

A fingerprint recognition and display device technology, applied in recognition devices, character and pattern recognition, instruments, etc., can solve the problem of reducing the effective aperture of the collimating hole, reducing the sensitivity of the fingerprint recognition sensor, and reducing the amount of light received by the fingerprint recognition sensor, etc. problem, to achieve the effect of improving sensitivity and increasing the amount of light received

Active Publication Date: 2021-01-26
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The collimation hole is formed by setting a light-transmitting hole in the multi-layer light-shielding layer. When the misalignment of the light-shielding layer occurs during patterning, the effective aperture of the collimation hole will be reduced, which in turn will reduce the amount of light received by the fingerprint recognition sensor. Reduced the sensitivity of the fingerprint recognition sensor

Method used

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  • A display device with a built-in fingerprint recognition sensor
  • A display device with a built-in fingerprint recognition sensor
  • A display device with a built-in fingerprint recognition sensor

Examples

Experimental program
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Embodiment 1

[0019] Please refer to figure 1 , is a schematic diagram of a display device with a built-in fingerprint recognition sensor provided in Embodiment 1 of the present invention, as shown in the figure, including a substrate 10, a plurality of light-shielding layers 11 disposed on the substrate 10, and a plurality of light-shielding layers 11 disposed on the plurality of light-shielding layers 11 The transparent layer 12 in between. Each light-shielding layer 11 is provided with a light-transmitting hole, and a plurality of light-transmitting holes form an alignment hole 13 , and also includes a fingerprint recognition sensor 14 corresponding to the alignment hole 13 .

[0020] A first light-transmitting material 15 and a second light-transmitting material 16 are arranged in the collimation hole 13, the first light-transmitting material 15 is located on the side of the second light-transmitting material 16 closer to the fingerprint recognition sensor 14, and the first light-transm...

Embodiment 2

[0031] Please refer to image 3 , image 3A schematic diagram of a display device with a built-in fingerprint recognition sensor provided in Embodiment 2 of the present invention, as shown in the figure, the display device 20 with a built-in fingerprint recognition sensor includes a first substrate 201 and a second substrate 202 disposed opposite to each other. A light-transmitting intermediate layer 26 is disposed between the first substrate 201 and the second substrate 202, and the light-transmitting intermediate layer 26 is equivalent to a light-transmitting layer between the light-shielding layers.

[0032] The plurality of light shielding layers include a first light shielding layer 211 disposed on the first substrate 201 and a second light shielding layer 212 disposed on the second substrate 202 . The first light-shielding layer 211 is provided with a first light-transmitting hole, and the second light-shielding layer 212 is provided with a second light-transmitting hol...

Embodiment 3

[0044] Figure 5 A schematic diagram of a display device with a built-in fingerprint recognition sensor provided for Embodiment 3, as shown in Figure 5 As shown, the display device 30 includes: a first substrate 301 and a second substrate 302 disposed opposite to each other, and a display material layer 303 is disposed between the first substrate 301 and the second substrate 302 . The first substrate 301 is provided with at least one first light-shielding layer 311, the first light-shielding layer 311 is provided with a first light-transmitting hole, and the second substrate 302 is provided with at least one second light-shielding layer 312, the second light-shielding layer 312 is provided with a second light-transmitting hole. The first light transmission hole and the second light transmission hole constitute the collimation hole 33 . It also includes a fingerprint identification sensor 34 arranged on the second substrate 302 corresponding to the alignment hole 33, specifi...

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Abstract

An embodiment of the present invention provides a display device with a built-in fingerprint recognition sensor, including a plurality of light-shielding layers and a light-transmitting layer arranged between the plurality of light-shielding layers; each light-shielding layer is provided with a light-transmitting hole, and a plurality of light-shielding layers The light hole forms a collimation hole; it also includes a fingerprint identification sensor set corresponding to the collimation hole; a first light-transmitting material and a second light-transmitting material are arranged in the collimating hole, and the first light-transmitting material is compared with the second light-transmitting material The optical material is closer to the side of the fingerprint recognition sensor, and the refractive index of the first light-transmitting material is greater than that of the second light-transmitting material, so that the light incident into the collimation hole is polarized, thereby increasing the misalignment of the light-transmitting hole. The amount of light received by the fingerprint recognition sensor increases the sensitivity of the fingerprint recognition sensor.

Description

【Technical field】 [0001] The invention relates to the technical field of fingerprint identification, in particular to a display device with a built-in fingerprint identification sensor. 【Background technique】 [0002] For the display panel with fingerprint recognition function, in order to better realize the full screen design and avoid the fingerprint recognition area occupying the space of the non-display area, the display area can be reused as the fingerprint recognition area by using the under-screen fingerprint recognition technology. [0003] The under-display fingerprint recognition structure generally includes a collimation hole and a fingerprint recognition sensor disposed below the collimation hole. The collimation hole is formed by setting a light-transmitting hole in the multi-layer light-shielding layer. When the misalignment of the light-shielding layer occurs during patterning, the effective aperture of the collimation hole will be reduced, which in turn will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/30G09F9/35G02F1/1333G02F1/1335G06K9/00
CPCG09F9/30G09F9/35G02F1/1333G02F1/133512G06V40/13
Inventor 林艳
Owner XIAMEN TIANMA MICRO ELECTRONICS
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