IP Library › Granted Patent US 12701874
Granted Patent B2
US 12701874 · App. 17/771,543 · Granted Aug 4, 2026

Display panel and display device

Inventor: Huatang Cai (Wuhan, CN)
Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
H10K59/126H10K59/80521H10D86/441H10D86/60H10K59/1213
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12701874
App. No.
17/771,543
Granted
Aug 4, 2026
Kind
B2
Abstract

A display panel and a display device are disposed. The display panel includes a first substrate, a first light shielding layer, a second light shielding layer, a first electrode layer, a light emitting layer, and a second electrode layer. The second electrode layer is provided with a light transmitting opening in the first display area. The first light shielding layer and the second light shielding layer are respectively provided with a first opening and a second opening corresponding to the light transmitting opening in the first display area. This prevents a part of the second electrode layer corresponding to first sub-pixels from being lasered away and improves a laser precision.

Claims (88)

1 . A display panel comprising a first display area and a second display area, wherein a light transmittance of the first display area is greater than a light transmittance of the second display area, the display panel comprises:

a first substrate;

a first light shielding layer disposed on a side of the first substrate, the first light shielding layer being provided in the first display area and the second display area;

a second light shielding layer disposed on a side of the first light shielding layer away from the first substrate, the second light shielding layer being provided in the first display area but absent from the second display area, wherein a thickness of a light shielding layer formed by superposition of the first light shielding layer and the second light shielding layer in the first display area is greater than a thickness of the first light shielding layer in the second display area;

a first electrode layer disposed on a side of the second light shielding layer away from the first substrate;

a light emitting layer disposed on a side of the first electrode layer away from the first substrate, wherein the light emitting layer comprises a plurality of first sub-pixels disposed in the first display area and a plurality of second sub-pixels disposed in the second display area; and

a second electrode layer disposed on a side of the light emitting layer away from the first substrate, wherein the second electrode layer is provided with a light transmitting opening between at least part of adjacent ones of the first sub-pixels in the first display area;

wherein the first light shielding layer is provided with a first opening corresponding to the light transmitting opening in the first display area, and the second light shielding layer is provided with a second opening corresponding to the light transmitting opening in the first display area;

wherein the first light shielding layer comprises:

first shielding sub-sections corresponding to the first sub-pixels;

a third shielding sub-section disposed around the first shielding sub-sections;

second shielding sub-sections each connecting two adjacent ones of the first shielding sub-sections or connecting adjacent ones of the first shielding sub-sections and the third shielding sub-section;

wherein each of the first shielding sub-sections is in shape of a closed graph, and the first shielding sub-sections are indirectly connected to each other; the second shielding sub-sections are serpentine traces;

wherein an orthographic projection of the first opening on the first substrate is located within an orthographic projection of the light transmitting opening on the first substrate; and an orthographic projection of the second opening on the first substrate is located within the orthographic projection of the light transmitting opening on the first substrate;

wherein a planar area of the first opening is smaller than that of the light transmitting opening, and a planar area of the second opening is smaller than that of the light transmitting opening;

wherein the first electrode layer comprises a plurality of first electrodes located in the first display area, and an orthographic projection of each first shielding sub-section on the first substrate covers an orthographic projection of a corresponding first electrode of the first electrodes on the first substrate; and

wherein the second light shielding layer covers edge portions of the first shielding sub-sections, the second shielding sub-sections, and the third shielding sub-section that surround the first opening.

2 . The display panel of claim 1 , wherein the first opening is provided in the first light shielding layer and in the first display area, the first opening being surrounded by the adjacent ones of the first shielding sub-sections and the second shielding sub-sections and/or surrounded by the adjacent ones of the first shielding sub-sections, the second shielding sub-sections, and the third shielding sub-section.

3 . The display panel of claim 2 , wherein a distance between an orthographic projection of one of the first shielding sub-sections on the first substrate and an orthographic projection of the first electrode layer on the first substrate ranges from 0.5 micrometers to 1.5 micrometers.

4 . The display panel of claim 2 , wherein the first display area comprises a display light transmitting area and a display transition area disposed between the display light transmitting area and the second display area, and the third shielding sub-section is disposed corresponding to an edge of the display light transmitting area.

5 . The display panel of claim 4 , wherein the display panel further comprises:

a driving circuit layer disposed between the first light shielding layer and the first electrode layer, wherein the driving circuit layer comprises:

a semiconductor layer,

a first insulating layer disposed on a side of the semiconductor layer away from the first substrate;

a first gate metal layer disposed on a side of the first insulating layer away from the first substrate;

a second insulating layer disposed on a side of the first gate metal layer away from the first substrate;

a second gate metal layer disposed on a side of the second insulating layer away from the first substrate;

a third insulating layer disposed on a side of the second gate metal layer away from the first substrate; and

a source and drain metal layer disposed on a side of the third insulating layer away from the first substrate;

wherein the second light shielding layer and the first gate metal layer are disposed in a same layer, the second light shielding layer and the second gate metal layer are disposed in a same layer, or the second light shielding layer and the source and drain metal layer are disposed in a same layer.

6 . A display panel comprising a first display area and a second display area, wherein the display panel comprises:

a first substrate;

a first light shielding layer disposed on a side of the first substrate, the first light shielding layer being provided in the first display area and the second display area;

a second light shielding layer disposed on a side of the first light shielding layer away from the first substrate, the second light shielding layer being provided in the first display area but absent from the second display area, wherein a thickness of a light shielding layer formed by superposition of the first light shielding layer and the second light shielding layer in the first display area is greater than a thickness of the first light shielding layer in the second display area;

a first electrode layer disposed on a side of the second light shielding layer away from the first substrate;

a light emitting layer disposed on a side of the first electrode layer away from the first substrate, wherein the light emitting layer comprises a plurality of first sub-pixels disposed in the first display area and a plurality of second sub-pixels disposed in the second display area; and

a second electrode layer disposed on a side of the light emitting layer away from the first substrate, wherein the second electrode layer is provided with a light transmitting opening between at least part of adjacent ones of the first sub-pixels in the first display area;

wherein the first light shielding layer is provided with a first opening corresponding to the light transmitting opening in the first display area, and the second light shielding layer is provided with a second opening corresponding to the light transmitting opening in the first display area;

wherein the first light shielding layer comprises:

first shielding sub-sections corresponding to the first sub-pixels;

a third shielding sub-section disposed around the first shielding sub-sections;

second shielding sub-sections each connecting two adjacent ones of the first shielding sub-sections or connecting adjacent ones of the first shielding sub-sections and the third shielding sub-section;

wherein each of the first shielding sub-sections is in shape of a closed graph, and the first shielding sub-sections are indirectly connected to each other; the second shielding sub-sections are serpentine traces;

wherein an orthographic projection of the first opening on the first substrate is located within an orthographic projection of the light transmitting opening on the first substrate; and an orthographic projection of the second opening on the first substrate is located within the orthographic projection of the light transmitting opening on the first substrate;

wherein a planar area of the first opening is smaller than that of the light transmitting opening, and a planar area of the second opening is smaller than that of the light transmitting opening;

wherein the first electrode layer comprises a plurality of first electrodes located in the first display area, and an orthographic projection of each first shielding sub-section on the first substrate covers an orthographic projection of a corresponding first electrode of the first electrodes on the first substrate; and

wherein the second light shielding layer covers edge portions of the first shielding sub-sections, the second shielding sub-sections, and the third shielding sub-section that surround the first opening.

7 . The display panel of claim 6 , wherein the first opening is provided in the first light shielding layer and in the first display area, the first opening being surrounded by the adjacent ones of the first shielding sub-sections and the second shielding sub-sections and/or surrounded by the adjacent ones of the first shielding sub-sections, the second shielding sub-sections, and the third shielding sub-section.

8 . The display panel of claim 7 , wherein a distance between an orthographic projection of one of the first shielding sub-sections on the first substrate and an orthographic projection of the first electrode layer on the first substrate ranges from 0.5 micrometers to 1.5 micrometers.

9 . The display panel of claim 7 , wherein the first display area comprises a display light transmitting area and a display transition area disposed between the display light transmitting area and the second display area, and the third shielding sub-section is disposed corresponding to an edge of the display light transmitting area.

10 . The display panel of claim 9 , wherein the display panel further comprises:

a driving circuit layer disposed between the first light shielding layer and the first electrode layer, wherein the driving circuit layer comprises:

a semiconductor layer,

a first insulating layer disposed on a side of the semiconductor layer away from the first substrate;

a first gate metal layer disposed on a side of the first insulating layer away from the first substrate;

a second insulating layer disposed on a side of the first gate metal layer away from the first substrate;

a second gate metal layer disposed on a side of the second insulating layer away from the first substrate;

a third insulating layer disposed on a side of the second gate metal layer away from the first substrate; and

a source and drain metal layer disposed on a side of the third insulating layer away from the first substrate;

wherein the second light shielding layer and the first gate metal layer are disposed in a same layer, the second light shielding layer and the second gate metal layer are disposed in a same layer, or the second light shielding layer and the source and drain metal layer are disposed in a same layer.

11 . The display panel of claim 6 , wherein at least in the first display area, a surface of the second light shielding layer close to a side of the first substrate is in direct contact with a surface of the first light shielding layer away from the side of the first substrate.

12 . The display panel of claim 11 , wherein a thickness of the first light shielding layer ranges from 500 angstroms to 5000 angstroms, and a total thickness of the first light shielding layer and the second light shielding layer ranges from 1000 angstroms to 7500 angstroms.

13 . The display panel of claim 6 , wherein the display panel further comprises:

a first inorganic insulating layer disposed between the first light shielding layer and the second light shielding layer; and

a driving circuit layer disposed between the second light shielding layer and the first electrode layer.

14 . The display panel of claim 13 , wherein the display panel further comprises a second substrate and a second inorganic insulating layer;

wherein the first light shielding layer is disposed on a side of the first substrate; the first inorganic insulating layer is disposed between the second substrate and the first light shielding layer; the second light shielding layer is disposed on a side of the second substrate away from the first substrate; and the second inorganic insulating layer is disposed between the second light shielding layer and the driving circuit layer.

15 . The display panel of claim 6 , wherein a pixel density of the first display area is equal to a pixel density of the second display area.

16 . A display device, comprising:

a display panel; and

a photosensor disposed on a side of the display panel and located in a first display area;

wherein the display panel comprises the first display area and a second display area, and the display panel comprises:

a first substrate;

a first light shielding layer disposed on a side of the first substrate, the first light shielding layer being provided in the first display area and the second display area;

a second light shielding layer disposed on a side of the first light shielding layer away from the first substrate, the second light shielding layer being provided in the first display area but absent from the second display area, wherein a thickness of a light shielding layer formed by superposition of the first light shielding layer and the second light shielding layer in the first display area is greater than a thickness of the first light shielding layer in the second display area;

a first electrode layer disposed on a side of the second light shielding layer away from the first substrate;

a light emitting layer disposed on a side of the first electrode layer away from the first substrate, wherein the light emitting layer comprises a plurality of first sub-pixels disposed in the first display area and a plurality of second sub-pixels disposed in the second display area; and

a second electrode layer disposed on a side of the light emitting layer away from the first substrate, wherein the second electrode layer is provided with a light transmitting opening between at least part of adjacent ones of the first sub-pixels in the first display area;

wherein the first light shielding layer is provided with a first opening corresponding to the light transmitting opening in the first display area, and the second light shielding layer is provided with a second opening corresponding to the light transmitting opening in the first display area;

wherein the first light shielding layer comprises:

first shielding sub-sections corresponding to the first sub-pixels;

a third shielding sub-section disposed around the first shielding sub-sections;

second shielding sub-sections each connecting two adjacent ones of the first shielding sub-sections or connecting adjacent ones of the first shielding sub-sections and the third shielding sub-section;

wherein each of the first shielding sub-sections is in shape of a closed graph, and the first shielding sub-sections are indirectly connected to each other; the second shielding sub-sections are serpentine traces;

wherein an orthographic projection of the first opening on the first substrate is located within an orthographic projection of the light transmitting opening on the first substrate; and an orthographic projection of the second opening on the first substrate is located within the orthographic projection of the light transmitting opening on the first substrate;

wherein a planar area of the first opening is smaller than that of the light transmitting opening, and a planar area of the second opening is smaller than that of the light transmitting opening;

wherein the first electrode layer comprises a plurality of first electrodes located in the first display area, and an orthographic projection of each first shielding sub-section on the first substrate covers an orthographic projection of a corresponding first electrode of the first electrodes on the first substrate; and

wherein the second light shielding layer covers edge portions of the first shielding sub-sections, the second shielding sub-sections, and the third shielding sub-section that surround the first opening.