US-12620351-B2 - Display panel and display device

US12620351B2US 12620351 B2US12620351 B2US 12620351B2US-12620351-B2

Abstract

A display panel includes a display region and a non-display region connected to the display region. The display panel also includes a base, multiple light-emitting devices, an isolation layer, a bank, and a power wire. A light-emitting device includes a first electrode, a light-emitting function layer, and a second electrode stacked on the base. The isolation layer includes multiple isolation openings. The light-emitting function layer is located in a corresponding isolation opening. The bank is disposed in the non-display region. The projection of the bank on the base surrounds the display region. The power wire is electrically connected to the second electrode. The non-display region includes a first bezel region. The first bezel region includes a first side circuit region located between the bank and the display region. The power wire is disposed in at least part of the non-display region excluding the first side circuit region.

Inventors

Yuan Yao
Yiming Xiao
Zhengkui DONG
Liusong NI
Zhenhai Yue
Yuting Fu

Assignees

Hefei Visionox Technology Co., Ltd.

Dates

Publication Date: 20260505
Application Date: 20240419
Priority Date: 20230626

Claims (19)

1 . A display panel, comprising a display region and a non-display region connected to the display region; the display panel further comprises: a base; a plurality of light-emitting devices, the light-emitting device comprising a first electrode, a light-emitting function layer, and a second electrode stacked on the base; an isolation layer, comprising a plurality of isolation openings, wherein the light-emitting function layer is located in a corresponding isolation opening of the plurality of isolation openings; a bank, disposed in the non-display region, the bank and the isolation layer being located on a same side of the base, wherein a projection of the bank on the base surrounds the display region; and a power wire, electrically connected to the second electrode, wherein the non-display region comprises a first bezel region, the first bezel region comprises a first side circuit region located between the bank and the display region, and the power wire is disposed in at least part of the non-display region excluding the first side circuit region; wherein the isolation layer further comprises an isolation structure, the power wire and the isolation structure are made of a same material and disposed in a same layer and are prepared simultaneously by using a same process.
2 . The display panel according to claim 1 , wherein the first electrode is an anode of the one light-emitting device, and the second electrode is a cathode of the one light-emitting device.
3 . The display panel according to claim 1 , wherein the isolation layer further comprises a pixel defining layer; and the pixel defining layer is disposed on a side of the base of the display panel, and the isolation structure is disposed on a side of the pixel defining layer facing away from the base; the isolation structure is enclosed to form a first opening, the pixel defining layer is enclosed to form a second opening, and an orthographic projection of the second opening on the base is in an orthographic projection of the first opening on the base; one of the plurality of isolation openings comprises the first opening and the second opening; and the light-emitting function layer is at least partially located in the second opening.
4 . The display panel according to claim 3 , wherein second electrodes of at least part of the plurality of light-emitting devices are connected to the isolation structure, and the isolation structure is electrically conductive.
5 . The display panel according to claim 1 , further comprising a thin-film encapsulation layer at least covering the plurality of light-emitting devices, wherein the thin-film encapsulation layer at least comprises an organic encapsulation layer, and the bank is configured to block the organic encapsulation layer.
6 . The display panel according to claim 1 , further comprising a scan line and a data line, wherein the scan line extends in a first direction, the data line extends in a second direction intersecting with the first direction; the non-display region comprises two first bezel regions opposite to each other in the first direction; and the non-display region further comprises a second bezel region, and in the second direction, the second bezel region is located on a side of the display region; and the power wire is at least partially disposed in the second bezel region.
7 . The display panel according to claim 6 , wherein the second bezel region comprises a second side circuit region between the bank and the display region, the power wire is at least partially disposed in the second side circuit region, and the second bezel region is further provided with a driver chip for providing a data signal.
8 . The display panel according to claim 6 , wherein the first side circuit region is provided with a gate driver circuit, and the gate driver circuit comprises at least one of the following: a scan circuit configured to generate a scan signal, a light-emitting control circuit configured to generate a light-emitting control signal.
9 . The display panel according to claim 6 , wherein the non-display region further comprises a third bezel region opposite to the second bezel region in the second direction.
10 . The display panel according to claim 6 , wherein a bezel width corresponding to the first bezel region in the display panel is equal to a sum of a distance between the bank and the display region, a bezel width occupied by the bank, and a distance between the bank and an edge of the display panel.
11 . The display panel according to claim 6 , wherein in the first bezel region, the power wire comprises a first wire portion disposed between the bank and the base; and an orthographic projection of the first wire portion on the base is covered by an orthographic projection of the bank on the base; and the power wire further comprises a second wire portion disposed in the second bezel region, and the first wire portion is connected to the second electrode through the second wire portion.
12 . The display panel according to claim 11 , wherein a distance between an edge of the first wire portion facing away from the display region and an edge of the bank facing away from the display region is greater than 0.
13 . The display panel according to claim 3 , wherein an orthographic projection of the isolation structure on the pixel defining layer is located between adjacent second openings; the isolation structure comprises a support portion and a blocking portion, and the support portion is located between the blocking portion and the pixel defining layer; an orthographic projection of the blocking portion on the pixel defining layer covers an orthographic projection of the support portion on the pixel defining layer; and a second electrode of a light-emitting device on at least one side of the isolation structure is connected to the support portion of the isolation structure, and the support portion is electrically conductive.
14 . The display panel according to claim 13 , wherein in a direction of a connecting line of the two adjacent second openings on opposite sides of the isolation structure, at a position in which the support portion is connected to the blocking portion, a size of the support portion is smaller than a size of the blocking portion.
15 . The display panel according to claim 13 , wherein a thickness of the support portion is greater than a thickness of the second electrode.
16 . The display panel according to claim 15 , wherein a thickness of the support portion is greater than or equal to 5000 angstroms.
17 . The display panel according to claim 3 , wherein in the display region, an orthographic projection of the isolation structure on the base overlaps an orthographic projection of the pixel defining layer on the base.
18 . The display panel according to claim 17 , wherein a distance between adjacent second openings is greater than or equal to 3 microns.
19 . A display panel, comprising a display region and a non-display region connected to the display region; the display panel further comprises: a base; a plurality of light-emitting devices, the light-emitting device comprising a first electrode, a light-emitting function layer, and a second electrode stacked on the base; an isolation layer, comprising a plurality of isolation openings, wherein the light-emitting function layer is located in a corresponding isolation opening of the plurality of isolation openings; a bank, disposed in the non-display region, the bank and the isolation layer being located on a same side of the base, wherein a projection of the bank on the base surrounds the display region; and a power wire, electrically connected to the second electrode, wherein the non-display region comprises a first bezel region, the first bezel region comprises a first side circuit region located between the bank and the display region, and the power wire is disposed in at least part of the non-display region excluding the first side circuit region; wherein the isolation layer further comprises a pixel defining layer and an isolation structure; and the pixel defining layer is disposed on a side of the base of the display panel, and the isolation structure is disposed on a side of the pixel defining layer facing away from the base; the isolation structure is enclosed to form a first opening, the pixel defining layer is enclosed to form a second opening, and an orthographic projection of the second opening on the base is in an orthographic projection of the first opening on the base; one of the plurality of isolation openings comprises the first opening and the second opening; and the light-emitting function layer is at least partially located in the second opening; wherein an orthographic projection of the isolation structure on the pixel defining layer is located between adjacent second openings; the isolation structure comprises a support portion and a blocking portion, and the support portion is located between the blocking portion and the pixel defining layer; an orthographic projection of the blocking portion on the pixel defining layer covers an orthographic projection of the support portion on the pixel defining layer; and a second electrode of a light-emitting device on at least one side of the isolation structure is connected to the support portion of the isolation structure, and the support portion is electrically conductive; wherein a thickness of the support portion is greater than a thickness of the second electrode, and the thickness of the support portion is greater than or equal to 5000 angstroms.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN2024/079801, filed on Mar. 4, 2024, which claims priority to Chinese Patent Application No. 202310771124.9 filed on Jun. 26, 2023, disclosures of both of which are incorporated herein by reference in their entireties. TECHNICAL FIELD Embodiments of the present application relate to the field of display technology, for example, a display panel and a display device. BACKGROUND With the development of display technology, narrow bezels become a development trend. In the related art, a bezel circuit and multiple signal lines are disposed in the bezels of a display panel. The bezel circuit includes a gate driver circuit. The signal lines include cathode power signal lines, clock signal lines and so on. The cathode power signal lines are disposed around a display region. However, in the existing display panel, it is difficult to implement a narrow bezel, and the screen-to-body ratio is relatively small. SUMMARY The present application provides a display panel and a display device. In a first aspect, an embodiment of the present application provides a display panel. The display panel includes a display region and a non-display region connected to the display region. The display panel also includes a base, multiple light-emitting devices, an isolation layer, a bank, and a power wire. A light-emitting device includes a first electrode, a light-emitting function layer, and a second electrode stacked on the base. The isolation layer includes multiple isolation openings. The light-emitting function layer is located in a corresponding isolation opening. The bank and the isolation layer are disposed in the non-display region and located on the same side of the base. The projection of the bank on the base surrounds the display region. The power wire is electrically connected to the second electrode. The non-display region includes a first bezel region. The first bezel region includes a first side circuit region located between the bank and the display region. The power wire is disposed in at least part of the non-display region excluding the first side circuit region. In a second aspect, an embodiment of the present application provides a display device. The display device includes the display panel according to the first aspect. In the display panel and the display device provided by embodiments of the present application, the isolation layer is disposed in the display region. The isolation layer includes multiple isolation openings. The light-emitting function layer is located in an isolation opening. Thus, the isolation layer blocks the light-emitting function layers of adjacent light-emitting devices to ensure that crosstalk does not occur between the light-emitting devices. Moreover, the power wire is disposed in at least part of the non-display region excluding the first side circuit region, that is, the power wire is not disposed in the first side circuit region. Thus, the distance between the bank and the display region does not include the bezel width occupied by the power wire. Compared with the display panel of the related art, the distance between the bank and the display region may be reduced, so that the width of the first bezel region is reduced, thereby facilitating the implementation of a narrow bezel and increasing the screen-to-body ratio. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating the structure of the bezel on a side of a display panel in the related art. FIG. 2 is a top view of a display panel according to an embodiment of the present application. FIG. 3 is a section view of a display panel according to an embodiment of the present application. FIG. 4 is a section view of another display panel according to an embodiment of the present application. FIG. 5 is a section view of another display panel according to an embodiment of the present application. FIG. 6 is a section view of another display panel according to an embodiment of the present application. FIG. 7 is a top view of another display panel according to an embodiment of the present application. FIG. 8 is an enlarged view of an isolation structure according to an embodiment of the present application. FIG. 9 is a diagram illustrating the structure of a display device according to an embodiment of the present application. DETAILED DESCRIPTION In the existing display panel, it is difficult to implement a narrow bezel, and the screen-to-body ratio is relatively small. The existing display panel includes multiple light-emitting devices, each of the light-emitting devices includes an anode, a light-emitting layer, and a cathode that are stacked, the cathodes of the multiple light-emitting devices are connected to each other to form a cathode layer, and the cathode layer is a whole surface structure. When the display panel is manufactured, after the light-emitting layer is formed, the cathode layer is laid on the