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Display panel and display device

A display panel and display area technology, applied in the direction of instruments, acquisition/organization of fingerprints/palmprints, electric solid-state devices, etc., can solve the problems of increasing process complexity and signal influence, so as to avoid light loss and increase the amount of light , Improving the effect of fingerprint recognition accuracy

Active Publication Date: 2019-11-05
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology

However, after the light-shielding layer 3' is added, coupling capacitance will be generated between the light-shielding layer 3' and the metal layer in the pixel circuit, such as the gate layer 5' and the source-drain layer 6', which will cause damage to the signal transmitted on the metal layer. Therefore, the original process needs to be re-evaluated, which increases the complexity of the process

Method used

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Embodiment Construction

[0031] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be understood that the term "an...

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Abstract

The embodiment of the invention provides a display panel and a display device, which relates to the technical field of display and does not need to reevaluate the manufacturing process and does not increase the complexity of the manufacturing process under the premise of improving the fingerprint identification accuracy. The display panel comprises a display area, a light emitting element and a light sensing element, wherein the display area includes an opening area and a non-opening area, and at least part of the display area is reused as a fingerprint identification area; the light emittingelement is located in the display area and comprises an anode layer, a light emitting layer and a cathode layer, and the light emitting layer is located in the opening area; the cathode layer in the fingerprint identification area includes a first film layer part and a second film layer part, at least part of the first film layer part is located in the opening area, the second film layer part is located in the non-opening area and provided with a plurality of holes, the light transmittance of the second film layer part is less than that of the first film layer part; and the light sensing element is located in the fingerprint identification area, and the light sensing element is located at the side, which is back to the light emitting surface of the display panel, of the holes.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. 【Background technique】 [0002] For the display panel with fingerprint identification function, such as figure 1 as shown, figure 1 It is a partial cross-sectional view of a display panel in the prior art. When a finger touches the display panel, the light emitted by the light-emitting element 1' is reflected by the finger and enters the photosensitive element 2', and then according to the intensity of the reflected light received by the photosensitive element 2', The light intensity identifies the valleys and ridges of the fingerprint. In the prior art, in order to improve the accuracy of fingerprint identification, a light-shielding layer 3' is usually added to the display panel. By opening a small hole 4' on the light-shielding layer 3', based on the principle of small hole imaging, the incident light to the photosensitive ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32G06K9/00
CPCG06V40/1318H10K59/00H10K59/65
Inventor 方月婷韩立静陈娴
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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