US-12628425-B2 - Display panel and spliced display device

US12628425B2US 12628425 B2US12628425 B2US 12628425B2US-12628425-B2

Abstract

Provided are a display panel and a spliced display device. The display panel includes first and second edges, first and second pixel rows, and first spacing regions. The first pixel row is adjacent to the first edge and includes first sub-pixels and each including a first light-emitting device and a first pixel circuit. The second pixel row includes second sub-pixels and each including a second light-emitting device and a second pixel circuit. The first spacing region is located at a side of the second pixel row close to the first edge. The second pixel rows include a second A pixel row adjacent to the first pixel row. The first pixel circuit is located in the first spacing region corresponding to the second A pixel row, and the second pixel circuit is located at a side of the second light-emitting device close to the first edge.

Inventors

Tenggang Lou
Yiran ZHU

Assignees

Shanghai Tianma Micro-electronics Co., Ltd.

Dates

Publication Date: 20260512
Application Date: 20230329
Priority Date: 20221107

Claims (20)

1 . A display panel, comprising: a first edge and a second edge that are opposite to each other along a first direction; pixel rows arranged along the first direction and comprising a first pixel row and second pixel rows, wherein the first pixel row is adjacent to the first edge and comprises first sub-pixels arranged along a second direction, and each of the first sub-pixels comprises a first light-emitting device and a first pixel circuit that are electrically connected to each other; and wherein each of the second pixel rows comprises second sub-pixels arranged along the second direction, and each of the second sub-pixels comprises a second light-emitting device and a second pixel circuit that are electrically connected to each other, and wherein the second direction intersects with the first direction; and first spacing regions corresponding to the second pixel rows in a one-to-one correspondence, wherein each first spacing region of the first spacing regions is adjacent to a corresponding second pixel row of the second pixel rows corresponding to the first spacing region, and wherein the first spacing region is located at a side of the corresponding second pixel row adjacent to the first edge, wherein the second pixel rows comprise a second A pixel row adjacent to the first pixel row, the first pixel circuit is located at a side of the first light-emitting device away from the first edge, the first pixel circuit is located in the first spacing region corresponding to the second A pixel row, and the second pixel circuit is located at a side of the second light-emitting device adjacent to the first edge, wherein the first light-emitting device comprises an anode electrically connected to the first pixel circuit through a first connection part, and a cathode electrically connected to a first negative power supply signal line; and wherein the anode of the first light-emitting device is located at a side of the cathode of the first light-emitting device away from the first pixel circuit.
2 . The display panel according to claim 1 , wherein a distance L 1 between the first edge and an edge of the first light-emitting device and a distance L 2 between the second edge and an edge of the second light-emitting device that is closest to the second edge satisfy: L 2 >L 1 .
3 . The display panel according to claim 1 , further comprising: a pin adjacent to the second edge and electrically connected to a first end of a side line, wherein the side line is bent to a backlight side of the display panel and comprises a second end electrically connected to a circuit board.
4 . The display panel according to claim 1 , further comprising: a first driver signal line electrically connected to the first pixel circuit, wherein the first driver signal line extends along the second direction and is located in the first spacing region corresponding to the second A pixel row.
5 . The display panel according to claim 4 , wherein the first pixel circuit is electrically connected to a scanning signal line, a first positive power supply signal line, a reset signal line, and a light-emitting control signal line; and wherein the first driver signal line comprises at least one of the scanning signal line, the first positive power supply signal line, the reset signal line, or the light-emitting control signal line.
6 . The display panel according to claim 1 , wherein a first connection line is provided between the first connection part and the first pixel circuit and connects the first connection part and the first pixel circuit, and the first connection line comprises a first line segment and a second line segment that are connected to each other, and wherein an end of the first line segment is electrically connected to the first connection part, at least part of the first line segment extends along the second direction, and the second line segment extends at a side of the first light-emitting device along the second direction.
7 . The display panel according to claim 6 , wherein the first line segment extends along the second direction, and the first connection part is located at a side of the anode of the first light-emitting device in the second direction.
8 . The display panel according to claim 1 , further comprising an electrostatic protection circuit located between two adjacent first light-emitting devices in the second A pixel row.
9 . The display panel according to claim 1 , wherein the first pixel circuit is in mirror symmetry with the second pixel circuit in the first A pixel row in the first direction.
10 . The display panel according to claim 1 , wherein a distance d 1 between an edge of the first light-emitting device and an edge of the second light-emitting device in the second A pixel row and a distance d 2 between edges of second light-emitting devices respectively located in two adjacent second pixel rows satisfy: d 1 =d 2 .
11 . The display panel according to claim 10 , further comprising cascaded shift registers located in at least one of the first spacing regions.
12 . The display panel according to claim 10 , wherein the second light-emitting device has an anode electrically connected to the second pixel circuit and a cathode electrically connected to a third negative power supply signal line, and the third negative power supply signal line is located in the first spacing region located at a side of the second light-emitting device away from the first pixel row.
13 . The display panel according to claim 1 , wherein the first light-emitting device has an anode electrically connected to the first pixel circuit and a cathode electrically connected to a first negative power supply signal line, and the first negative power supply signal line extends along the second direction; and wherein the first negative power supply signal line overlaps with the first light-emitting device in a direction perpendicular to a plane of the display panel.
14 . The display panel according to claim 13 , further comprising cascaded shift registers located in at least one of the first spacing regions, wherein the first pixel circuit has a size r 1 in the first direction, one of the shift registers has a size r 2 in the first direction, r 1 <r 2 , and, a part of the first light-emitting device is located in the first spacing region corresponding to the second A pixel row.
15 . The display panel according to claim 1 , further comprising cascaded shift registers located in at least one of the first spacing regions that is located at a side of the second A pixel row away from the first pixel row.
16 . The display panel according to claim 15 , wherein the second pixel rows comprise a second B pixel row adjacent to the second A pixel row; and wherein the shift registers comprise a first shift register electrically connected to the first pixel row and a second shift register electrically connected to the second A pixel row, and each of the first shift register and the second shift register are located in the first spacing region corresponding to the second B pixel row.
17 . The display panel according to claim 1 , further comprising cascaded shift registers, wherein the second pixel rows comprise a second C pixel row adjacent to the second edge, and the shift registers are located in at least one of the first spacing regions that is at a side of the second C pixel row away from the second edge.
18 . The display panel according to claim 1 , further comprising gate circuits electrically connected to the first sub-pixel and the second sub-pixel through data lines, wherein the second pixel rows comprise a second C pixel row adjacent to the second edge, and the gate circuits are located in at least one of the first spacing regions that is located at a side of the second C pixel row away from the second edge.
19 . The display panel according to claim 1 , wherein a distance L 1 between the first edge and an edge of the first light-emitting device, a distance L 2 between the second edge and an edge of the second light-emitting device closest to the second edge, and a distance L between edges of the second light-emitting devices respectively located in two adjacent second pixel rows satisfy: L 1 +L 2 ≤L.
20 . The display panel according to claim 1 , further comprising a pin adjacent to the second edge, wherein the second pixel rows comprise a second C pixel row adjacent to the second edge, wherein the second C pixel row comprises pixel units arranged along the second direction, and wherein the pixel units comprise the second sub-pixels arranged along the second direction; wherein the second C pixel row comprises a second spacing region located between two adjacent pixel units of the pixel units; wherein the pin overlaps with the second spacing region in the first direction; and wherein a part of the pin is located in the second spacing region.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application claims priority to Chinese Patent Application No. 202211387563.1, filed on Nov. 7, 2022, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the display technical field, and particularly, to a display panel and a spliced display device. BACKGROUND When a display panel having a bezel is applied in a large-sized spliced display device, the light-emitting regions of adjacent display panels will be separated by a distance of widths of at least two bezels, resulting in an obvious splicing gap formed when the spliced display device displays images, thereby negatively affecting the display effect. SUMMARY In a first aspect, the present disclosure provides a display panel, including: a first edge and a second edge that are opposite to each other along a first direction; pixel rows arranged along the first direction and including a first pixel row and second pixel rows; and first spacing regions corresponding to the second pixel rows in a one-to-one correspondence. In an embodiment, the first pixel row is adjacent to the first edge and includes first sub-pixels arranged along a second direction, and each of the first sub-pixels includes a first light-emitting device and a first pixel circuit that are electrically connected to each other. In an embodiment, each of the second pixel rows includes second sub-pixels arranged along the second direction, and each of the second sub-pixels includes a second light-emitting device and a second pixel circuit that are electrically connected to each other. In an embodiment, the second direction intersects with the first direction. In an embodiment, each of the first spacing regions is adjacent to a corresponding one second pixel row of the second pixel rows corresponding to the first spacing region, and is located at a side of the corresponding one second pixel row close to the first edge. In an embodiment, the second pixel rows include a second A pixel row adjacent to the first pixel row, the first pixel circuit is located at a side of the first light-emitting device away from the first edge, the first pixel circuit is located in the first spacing region corresponding to the second A pixel row, and the second pixel circuit is located at a side of the second light-emitting device close to the first edge. In a second aspect, the present disclosure provides a spliced display device including at least two display panels. In an embodiment, each of the at least two display panels is the display panel provided in the first aspect, and the at least two display panels are spliced together along the first direction. BRIEF DESCRIPTION OF DRAWINGS For clearly describing embodiments of the present disclosure and embodiments in related art, accompanying drawings necessary for illustrating these embodiments are briefly introduced as below. The accompanying drawings described below illustrate only some embodiments of the present disclosure. Based on these drawings, those skilled in the art can obtain other drawings without creative efforts. FIG. 1 is a top view of a display panel provided in related art; FIG. 2 is a top view of a spliced display device provided in related art; FIG. 3 is a top view of a display panel provided by some embodiments of the present disclosure; FIG. 4 is a layer schematic diagram of a display panel provided by some embodiments of the present disclosure; FIG. 5 is a top view of a spliced display device provided by some embodiments of the present disclosure; FIG. 6 is a schematic diagram showing connection between a display panel and a circuit board provided by some embodiments of the present disclosure; and FIG. 7 is another schematic diagram showing connection between a display panel and a circuit board provided by some embodiments of the present disclosure; and FIG. 8 is a circuit schematic diagram of a first sub-pixel provided by some embodiments of the present disclosure FIG. 9 is a layer schematic diagram of a first sub-pixel provided by some embodiments of the present disclosure; FIG. 10 is a timing sequence corresponding to a first pixel circuit provided by some embodiments of the present disclosure; FIG. 11 is another top view of a display panel provided by some embodiments of the present disclosure; FIG. 12 is another layer schematic diagram of a first sub-pixel provided by some embodiments of the present disclosure; FIG. 13 is another layer schematic diagram of a first sub-pixel provided by some embodiments of the present disclosure; FIG. 14 is another top view of a display panel provided by some embodiments of the present disclosure; FIG. 15 is a schematic diagram showing a position of a shift register provided by some embodiments of the present disclosure; FIG. 16 is a sectional view along A1-A2 shown in FIG. 12 according to an embodiment of the present disclosure; FIG. 17 is another top view of a display panel provided by