Display panel, preparation method thereof and display device

A technology for display panels and substrate substrates, which is applied in the direction of instruments, electrical components, circuits, etc., and can solve problems such as fingerprint imaging is not clear enough

Active Publication Date: 2020-02-18
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • 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 f

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

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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] Such as figure 1 with 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 array-distributed TFT 2) and a photodiode array (including array-distributed The PIN photodiode 3) further includes a first passivation layer 41 and a first planarization layer located between the TFT array and the photodiode array and arranged in sequ...

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Abstract

The invention relates to the technical field of display, and discloses a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a thin film transistor array and a photosensitive diode array located on the substrate in sequence, and also comprises a first passivation layer, a first planarization layer and a second passivation layer located betweenthe thin film transistor array and the photosensitive diode array and sequentially arranged in the direction from the thin film transistor array to the photosensitive diode array. Via holes are formed in the first passivation layer, the first planarization layer and the second passivation layer, and the photosensitive diode array is electrically connected with the thin film transistor array through the via holes. According to the display panel, the photosensitive diode array structure layer is integrated, the fingerprint induction and recognition functions of the display area can be achieved,the dark-state current of the photosensitive diode structure is low, the contrast ratio of fingerprint imaging is high, and imaging is clear.

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 ...

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Application Information

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