Display panel, manufacturing method thereof, and display device

A display panel and substrate substrate technology, which is applied in the direction of instruments, acquisition/arrangement of fingerprints/palmprints, electric solid devices, etc., can solve the problem that fingerprint imaging is not clear enough to achieve fingerprint sensing and recognition functions, uniform electric field distribution, Solve the effect of dark state current rise

Active Publication Date: 2022-01-18
BOE TECH GRP CO LTD
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  • Claims
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Problems solved by technology

[0003] The invention discloses a display panel, a preparation method thereof, and a display device, and aims to provide an OLED display panel embedded with a fingerprint identification function, and improve the problem that the fingerprint imaging of the embedded fingerprint identification function is not clear enough

Method used

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  • Display panel, manufacturing method thereof, and display device
  • Display panel, manufacturing method thereof, and display device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a display panel, including a base substrate 1, and a thin film transistor array (including TFT 2 distributed in an array) and a photodiode array (including a distributed TFT array) located on the substrate 1 in turn. The PIN photodiode 3) also includes a first passivation layer 41, a first planarization layer positioned between the TFT array and the photodiode arr...

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Abstract

The invention relates to the field of display technology, and discloses a display panel, a preparation method thereof, and a display device. Wherein, the display panel includes a base substrate, a thin film transistor array and a photodiode array located on the base substrate in turn, and also includes a thin film transistor array located between the thin film transistor array and the photosensitive diode array The first passivation layer, the first planarization layer and the second passivation layer arranged sequentially from the array to the photodiode array direction; the first passivation layer, the first planarization layer and the second passivation layer are provided with There are via holes, and the photosensitive diode array is electrically connected with the thin film transistor array through the via holes. The above-mentioned display panel is integrated with a photodiode array structure layer, which can realize fingerprint sensing and recognition functions in the display area, and the dark state current of the photodiode structure is low, and the contrast of fingerprint imaging is high, and the image is clearer.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] Currently, the integration of the optical fingerprint recognition sensor and the display screen is realized mainly by bonding a separate optical fingerprint recognition sensor to the display screen. The integration of optical fingerprint recognition sensors (In Cell integration form) in OLED displays is still in the stage of technology development. Specifically, the optical fingerprint recognition sensor is integrated in the OLED display in the form of In Cell. The specific principle is to use the same preparation process to form a light-emitting structure layer and a fingerprint recognition structure layer on the substrate, so as to organically integrate the fingerprint recognition structure layer into the display substrate. In this way, the fingerprint identification function ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32G06K9/00
CPCG06V40/1318H10K59/60H10K59/12
Inventor 邸云萍
Owner BOE TECH GRP CO LTD
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