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Display panel and preparation method thereof and display device

A display panel and display device technology, applied in semiconductor/solid-state device manufacturing, instruments, fingerprint/palmprint acquisition/organization, etc., can solve problems such as complicated process and electrical interference of the light-shielding layer, so as to avoid electrical interference, Facilitate the identification of fingerprints and reduce the difficulty and complexity of the manufacturing process

Inactive Publication Date: 2019-09-24
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a display panel, its preparation method, and a display device, which are used to solve the complex process of the under-screen fingerprint recognition device used for pinhole imaging and the electrical interference of the light-shielding layer made of accessory metal.

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  • Display panel and preparation method thereof and display device
  • Display panel and preparation method thereof and display device
  • Display panel and preparation method thereof and display device

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Embodiment Construction

[0039] The existing light-sensitive fingerprint recognition panel emits light through display pixels or an external light source, and the signal light reflected after illuminating the finger passes through the entire display module and reaches the fingerprint recognition device below the module to be received, thereby detecting fingerprints. Such as figure 1 As shown, it is one of the existing structures for realizing light perception under the screen, which is mainly achieved by adding a light-shielding layer 101 in the driving array (TFT array) film layer of the driving backplane 1 and opening a small hole area 101a for penetration. Light, forming a small hole imaging; where the small hole area 101a and the light-emitting area 102 and the metal film layer shielding area ( figure 1 Not shown in) are not covered.

[0040] Due to the existing under-screen fingerprint device used for small hole imaging, a light-shielding layer 101 is added to the driving array film layer, generally ...

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Abstract

The invention provides a display panel and a preparation method thereof and a display device. A light shielding layer and a display device which realize the hole imaging function are respectively arranged on the two opposite surfaces of an underlying substrate, and a photosensitive image sensor is arranged under the light shielding layer. The light shielding layer is trepanned so that the hole imaging function can be realized and the fingerprint identification function under the screen can be achieved. The position of the light shielding layer for hole imaging is changed and the light shielding layer is arranged on the back surface of the underlying substrate away from the display device, so that the display device can be away from the light shielding layer, and the electrical interference of the light shielding layer won the display device can be avoided. The display device and the light shielding layer are manufactured on different surfaces of the underlying substrate and the difficulty and the complexity of the manufacturing process can be reduced. The light shielding layer for realizing the hole imaging is arranged on the back surface of the underlying substrate so that the hole of the light shielding layer is closer to the photosensitive sensor, the signal intensity received by the photosensitive image sensor can be improved and the photosensitive image sensor is more favorable for accurately and quickly identifying the fingerprints.

Description

Technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a preparation method thereof and a display device. Background technique [0002] The existing light-sensitive fingerprint identification panel emits light through display pixels or an external light source, and the signal light reflected after illuminating the finger passes through the entire display module and reaches the fingerprint identification device below the module to be received, thereby detecting fingerprints. A light-shielding layer is added to the drive array film layer of the drive backplane of the display panel, and a small hole area is opened in the drive array film to transmit light, forming a small hole imaging, which is one of the existing structures for realizing under-screen light perception . [0003] Because the existing under-screen fingerprint device for small hole imaging adds a light-shielding layer to the driving array film layer, the light-...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L21/77G06K9/00
CPCG06V40/1318H10K59/65H10K59/126H10K59/1201
Inventor 陈娴韩立静
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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