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Display panel and display device for fingerprint identification

A display panel, fingerprint recognition technology, applied in character and pattern recognition, input/output process of data processing, instruments, etc., can solve the problem of large pixel circuit drive load, capacitive coupling, etc., to avoid parasitic capacitance and thickness increase , the effect of reducing the driving load

Active Publication Date: 2019-07-09
YUNGU GUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above two arrangements, the conductive light-shielding layer and the circuit on the array substrate are prone to capacitive coupling, which leads to a large driving load of the pixel circuit.

Method used

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  • Display panel and display device for fingerprint identification
  • Display panel and display device for fingerprint identification
  • Display panel and display device for fingerprint identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Figure 1A It is a schematic cross-sectional structure diagram of a display panel for fingerprint recognition provided by Embodiment 1 of the present invention, Figure 1B It is a schematic top view structural diagram of the conductive light-shielding layer in the display panel for fingerprint identification provided by Embodiment 1 of the present invention, Figure 1C Another schematic cross-sectional structure diagram of a display panel for fingerprint identification provided by Embodiment 1 of the present invention.

[0047] The inventor of the present invention found in the actual research process that there is a problem that the pixel circuit driving load is relatively large in the current fingerprint recognition display device, and the inventor found that the reason for this problem lies in: the existing fingerprint recognition display device , the metal light-shielding layer is often arranged on the PI layer in the array substrate or one of the metal layers in th...

Embodiment 2

[0068] Figure 2A It is a schematic cross-sectional structure diagram of a display panel for fingerprint identification provided by Embodiment 2 of the present invention, Figure 2B It is a schematic top view structure diagram of the conductive light-shielding layer in the display panel for fingerprint identification provided by Embodiment 2 of the present invention, Figure 2C Another schematic cross-sectional structure diagram of a display panel for fingerprint identification provided by Embodiment 2 of the present invention.

[0069] The display panel used for fingerprint identification provided by this embodiment is as follows: Figure 2A and Figure 2B As shown, the display panel includes an array substrate and several light emitting units 50 disposed on the array substrate, wherein the array substrate includes a substrate 10 and a thin film transistor (Thin Film Transistor, TFT for short) layer disposed on the substrate 10, wherein For the structure of the thin film t...

Embodiment 3

[0085] image 3 It is a schematic cross-sectional structure diagram of a display panel and a fingerprint recognition module in a display device provided by Embodiment 3 of the present invention.

[0086] Embodiment 3 of the present invention provides a display device. The display device can be an OLED display device and any product with a display function such as a TV, a digital camera, a mobile phone, a tablet computer, a smart watch, an e-book, a navigator, or the like that includes an OLED display device. part.

[0087] Wherein, in this embodiment, the display device includes a fingerprint identification module 60 and the display panel described in any of the above-mentioned embodiments. In this embodiment, the structure, function and realization of the display panel can refer to the specific description in the above-mentioned embodiments. No more details here, wherein, the fingerprint recognition module 60 is located below the display panel and corresponds to the imaging ...

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Abstract

The invention provides a display panel and a display device for fingerprint identification. The display panel comprises an array substrate and a plurality of light-emitting units arranged on the arraysubstrate. The array substrate comprises a substrate body and a thin film transistor layer arranged on the substrate body. The substrate comprises at least two organic film layers which are arrangedin a laminated manner. A conductive shading layer is arranged between the at least two organic film layers. The conductive shading layer is divided into a plurality of pressure-sensitive electrodes which are arranged at intervals. According to the display panel provided by the invention, the problem that the driving load of a pixel circuit is large due to the fact that capacitive coupling easily occurs between a conductive shading layer and the circuit in an existing under-screen fingerprint identification device is solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel and a display device for fingerprint identification. Background technique [0002] Fingerprint identification technology refers to the technology of collecting fingerprints on the front of the display screen through the fingerprint identification device set on the back of the display screen to complete fingerprint identification. Among them, fingerprint identification technology mainly includes ultrasonic fingerprint identification and optical fingerprint identification, optical fingerprint identification technology Specifically, a light-shielding layer is added to the array substrate of the display screen, and an imaging hole is opened in the light-shielding layer. Through the principle of small hole imaging, the fingerprint is imaged on the fingerprint sensor under the OLED module to complete fingerprint recognition. [0003] At present, there are mainly two wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06K9/00
CPCG06F3/0414G06F3/0412G06V40/1324
Inventor 杜凌霄史文杰王明玺
Owner YUNGU GUAN TECH CO LTD
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