US-20260130030-A1 - DISPLAY PANEL AND DISPLAY DEVICE

US20260130030A1US 20260130030 A1US20260130030 A1US 20260130030A1US-20260130030-A1

Abstract

The disclosure provides a display panel and a display device. The display panel includes a base substrate; an active layer located on one side of the base substrate; multiple metal layers located on a side of the active layer away from the base substrate, the multiple metal layers including a first metal layer and a second metal layer, the first metal layer including a physical part and a plurality of openings, the second metal layer including a physical part and a plurality of openings; and a first shielding area, where at least a portion of the active layer is located in the first shielding area, and in a direction perpendicular to a plane where the base substrate is located, at least one of the physical part of the first metal layer and the physical part of the second metal layer covers the first shielding area.

Inventors

Fanqing MENG
Zhenyu JIA
Bo Yang

Assignees

Tianma Advanced Display Technology Institute (Xiamen) Co.,Ltd.

Dates

Publication Date: 20260507
Application Date: 20250107
Priority Date: 20241101

Claims (20)

1 . A display panel, comprising: a base substrate; an active layer located on one side of the base substrate; multiple metal layers located on a side of the active layer away from the base substrate, the multiple metal layers including a first metal layer and a second metal layer, the first metal layer including a physical part and a plurality of openings, the second metal layer including a physical part and a plurality of openings; and a first shielding area, wherein at least a portion of the active layer is located in the first shielding area, and in a direction perpendicular to a plane where the base substrate is located, at least one of the physical part of the first metal layer and the physical part of the second metal layer covers the first shielding area.
2 . The display panel according to claim 1 , further comprising a plurality of pixel circuits, wherein the active layer includes a first active portion, a pixel circuit includes the first active portion, and the first active portion is located in the first shielding area.
3 . The display panel according to claim 2 , wherein: the physical part of the first metal layer includes a first power supply structure; the physical part of the second metal layer includes a second power supply structure; and the display panel includes a plurality of light emitting diodes, the first power supply structure is electrically connected to the pixel circuit, the pixel circuit is electrically connected to a first electrode of a light emitting diode, and the second power supply structure is electrically connected to a second electrode of the light emitting diode.
4 . The display panel according to claim 3 , wherein the pixel circuit includes a pulse width module and an amplitude module, and the first power supply structure is electrically connected to the amplitude module of the pixel circuit.
5 . The display panel according to claim 3 , wherein: at least two pixel circuits form a pixel circuit group, and first active portions of the pixel circuit group are located in the first shielding area; the pixel circuit group is arranged in rows along a first direction, and a plurality of rows of pixel circuit groups are arranged along a second direction, the first direction and the second direction intersect, and the first direction and the second direction are parallel to the plane where the base substrate is located; in the direction perpendicular to the plane where the base substrate is located, the first power supply structure at least partially overlaps with four pixel circuit groups including two adjacent rows of pixel circuit groups and two adjacent columns of pixel circuit groups; and in the direction perpendicular to the plane where the base substrate is located, the second power supply structure at least partially overlaps with the four pixel circuit groups including two adjacent rows of pixel circuit groups and two adjacent columns of pixel circuit groups.
6 . The display panel according to claim 5 , wherein: the openings of the first metal layer include a plurality of first openings, and the openings of the second metal layer include a plurality of second openings; and in the first shielding area, in the direction perpendicular to the plane where the base substrate is located, the first openings and the second openings do not overlap.
7 . The display panel according to claim 6 , wherein: in at least a portion of the first shielding area, first openings are arranged in columns along the second direction, a plurality of columns of first openings are arranged along the first direction, first openings in alternate columns overlap along the first direction, and first openings in adjacent columns overlap along the first direction or first openings in adjacent columns at least partially do not overlap along the first direction; and/or in at least a portion of the first shielding area, second openings are arranged in columns along the second direction, a plurality of columns of the second openings are arranged along the first direction, second openings in alternate columns overlap along the first direction, and second openings in adjacent columns overlap along the first direction or second openings in adjacent columns at least partially do not overlap along the first direction.
8 . The display panel according to claim 6 , wherein: the physical part of the second metal layer further includes a first auxiliary electrode, and a third opening is provided between the first auxiliary electrode and the second power structure; the first auxiliary electrode is electrically connected to the pixel circuit, and the first auxiliary electrode is electrically connected to the first electrode of the light emitting diode; and the first auxiliary electrode and a second power structure between two adjacent first auxiliary electrodes are provided with a plurality of fourth openings, and an area of a fourth opening is smaller than an area of a second opening.
9 . The display panel according to claim 8 , wherein: in the direction perpendicular to the plane where the base substrate is located, a plurality of fifth openings are provided at a portion where the first power structure overlaps with the first auxiliary electrode and the second power structure between two adjacent first auxiliary electrodes; the fifth openings are arranged in columns along the second direction, a plurality of columns of fifth openings are arranged along the first direction, fifth openings in adjacent columns overlap along the first direction, and fifth openings in alternate columns overlap along the first direction; and orthographic projections of the fourth openings on the first metal layer are alternately arranged with the fifth openings along the second direction.
10 . The display panel according to claim 8 , wherein: the physical part of the first metal layer further includes a second auxiliary electrode, and a sixth opening is provided between the second auxiliary electrode and the first power structure; in the direction perpendicular to the plane where the base substrate is located, the first auxiliary electrode and the second auxiliary electrode at least partially overlap, the first auxiliary electrode and the second auxiliary electrode are electrically connected, and the second auxiliary electrode is electrically connected to the pixel circuit; the display panel includes a plurality of light emitting diodes, at least two light emitting diodes form a light emitting element group, and one pixel circuit group is electrically connected to one light emitting element group; in the direction perpendicular to the plane where the base substrate is located, a pixel circuit group and an electrically connected light emitting element group at least partially do not overlap along the second direction; and in the direction perpendicular to the plane where the base substrate is located, the first auxiliary electrode and the second auxiliary electrode overlap in the first shielding area, the second auxiliary electrode and the sixth opening are at least partially located outside the first shielding area, and the sixth opening does not overlap with the active layer; or the sixth opening is located outside the first shielding area; or the sixth opening is located in the first shielding area, and in the direction perpendicular to the plane where the substrate is located, the sixth opening does not overlap with the active layer.
11 . The display panel according to claim 3 , wherein: the first power structure includes a first connection portion, and the first connection portion is electrically connected to the pixel circuit; and at least a portion of the first connecting portion protrudes toward an opening of the first metal layer.
12 . The display panel according to claim 1 , wherein in the first shielding area, a minimum distance d between an orthographic projection of an opening of the second metal layer on the first metal layer and an opening of the first metal layer satisfies: d ≥ X ⁢ 1 + X ⁢ 2 2 + Y 2 + H 2 wherein, X 1 is a line width difference between a design pattern and an actual production pattern of the first metal layer, X 2 is a line width difference between a design pattern and an actual production pattern of the second metal layer, Y is a fitting accuracy between the first metal layer and the second metal layer, and H is a thickness of the insulating layer between the first metal layer and the second metal layer.
13 . The display panel according to claim 6 , wherein: a wiring area is provided on at least one side of the pixel circuit group along the first direction, and the wiring area includes a signal line extending along the second direction; the openings of the first metal layer further include a plurality of seventh openings, and an area of a seventh opening is greater than an area of a first opening; and in the wiring area, the seventh openings are arranged along the second direction.
14 . The display panel according to claim 13 , wherein: along the second direction, the plurality of seventh openings and the plurality of first openings are alternatingly arranged; and along the first direction and/or the second direction, a seventh opening overlaps with multiple first openings.
15 . The display panel according to claim 6 , wherein: a wiring area is provided on at least one side of the pixel circuit group along the first direction, and the wiring area includes a signal line extending along the second direction; the openings of the second metal layer further include a plurality of eighth openings, and an area of an eighth opening is greater than an area of a second opening; and in the wiring area, the plurality of eighth openings are arranged along the second direction.
16 . The display panel according to claim 15 , wherein: along the second direction, the plurality of eighth openings and the plurality of the second openings are alternatingly arranged; and along the first direction and/or the second direction, an eighth opening overlaps with multiple second openings.
17 . The display panel according to claim 6 , wherein: a wiring area is provided on at least one side of the pixel circuit group along the first direction, and the wiring area includes a signal line extending along the second direction; the openings of the first metal layer further include a plurality of seventh openings, and an area of a seventh opening is greater than an area of a first opening; in the wiring area, the plurality of seventh openings are arranged along the second direction; the openings of the second metal layer further include a plurality of eighth openings, an area of an eighth opening is greater than an area of a second opening; in the wiring area, the plurality of eighth openings are arranged along the second direction; and orthographic projections of the plurality of eighth openings on the first metal layer and the plurality of seventh openings are alternatingly arranged along the second direction.
18 . The display panel according to claim 17 , wherein: along the second direction, the plurality of seventh openings and the plurality of first openings are alternatingly arranged; along the second direction, the plurality of eighth openings and the plurality of the second openings are alternatingly arranged; and an orthographic projection of an eighth opening on the first metal layer overlaps with multiple first openings between two adjacent seventh openings, and/or an orthographic projection of a seventh opening on the second metal layer overlaps with multiple second openings between two adjacent eighth openings.
19 . The display panel according to claim 1 , wherein: the display panel includes a driving circuit, and the driving circuit includes a multi-stage cascaded shift register circuit; and the active layer includes a second active portion, the shift register circuit includes the second active portion, and the second active portion is located in the first shielding area.
20 . A display device, comprising a display panel, wherein the display panel includes: a base substrate; an active layer located on one side of the base substrate; multiple metal layers located on a side of the active layer away from the base substrate, the multiple metal layers including a first metal layer and a second metal layer, the first metal layer including a physical part and a plurality of openings, the second metal layer including a physical part and a plurality of openings; and a first shielding area, wherein at least a portion of the active layer is located in the first shielding area, and in a direction perpendicular to a plane where the base substrate is located, at least one of the physical part of the first metal layer and the physical part of the second metal layer covers the first shielding area.

Description

CROSS-REFERENCE TO RELATED DISCLOSURE This application claims priority of Chinese Patent Application No. 202411554497.1 filed on Nov. 1, 2024, the entire content of which is hereby incorporated by reference. TECHNICAL FIELD The application relates to the field of display technology, and in particular to a display panel and a display device. BACKGROUND Light emitting diode (LED) display panels, such as micro-LED display panels and mini-LED display panels, have many advantages such as self-luminescence, low driving voltage, high luminous efficiency, short response time, high clarity and contrast, etc. LED display panels thus have gradually become a research hotspot in the field of display technology. When preparing a light emitting diode display panel, a light emitting diode needs to be fixed to the array substrate by laser bonding technology. However, the array substrate includes an active layer, and when laser bonding the light emitting diode, it is easy to affect at least part of the active layer, thereby affecting the performance of a thin film transistor that includes at least part of the active layer. SUMMARY To solve the above technical problems, the embodiments of the present disclosure provide a display panel and a display device to avoid affecting at least part of the active layer in the array substrate when laser bonding light emitting diodes, thereby avoiding affecting the performance of a thin film transistor that includes at least part of the active layer. In one aspect, an embodiment of the present disclosure provides a display panel, the display panel including a base substrate; an active layer located on one side of the substrate base; multiple metal layers located on a side of the active layer away from the substrate, the multiple metal layers including a first metal layer and a second metal layer, the first metal layer including a physical part and a plurality of openings, the second metal layer including a physical part and a plurality of openings; and a first shielding area, where at least a part of the active layer is located in the first shielding area, and in a direction perpendicular to a plane where the base substrate is located, at least one of the physical part of the first metal layer and the physical part of the second metal layer covers the first shielding area. In another aspect, an embodiment of the present disclosure provides a display device, where the display device includes a display panel, and the display panel includes a base substrate; an active layer located on one side of the substrate base; multiple metal layers located on a side of the active layer away from the substrate, the multiple metal layers including a first metal layer and a second metal layer, the first metal layer including a physical part and a plurality of openings, the second metal layer including a physical part and a plurality of openings; and a first shielding area, where at least a part of the active layer is located in the first shielding area, and in a direction perpendicular to a plane where the base substrate is located, at least one of the physical part of the first metal layer and the physical part of the second metal layer covers the first shielding area. Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solution in the embodiments of the present disclosure or in the existing technologies, the drawings essential to understanding the disclosed embodiments or the description of the existing technologies will be briefly introduced below. Apparently, the drawings provided below are only some embodiments of the present disclosure. For a person skilled in the art, other drawings may be obtained based on these drawings without making creative efforts. FIG. 1 is a schematic diagram of a partial cross-sectional structure of an array substrate in a display panel, in accordance with an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a partial layout structure of a display panel, in accordance with an embodiment of the present disclosure; FIG. 3 is a schematic diagram of the layout structure of the active layer q in FIG. 2; FIG. 4 is a schematic diagram of the layout structure of the first metal layer M3 in FIG. 2; FIG. 5 is a schematic diagram of the layout structure of the second metal layer M4 in FIG. 2; FIG. 6 is a schematic diagram showing a short circuit between the first metal layer M3 and the second metal layer M4 caused by damage to the insulating layer PLN between the two metal layers; FIG. 7 is a schematic diagram of a circuit structure of a pixel circuit 110 in a display panel, in accordance with an embodiment of the present disclosure; FIG. 8 is a timing diagram of the pixel circuit 110 shown in FIG. 7; FIG. 9 is a sc