CN-115996609-B - Display panel and display device

CN115996609BCN 115996609 BCN115996609 BCN 115996609BCN-115996609-B

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate, a plurality of signal lines positioned on one side of the substrate, a plurality of light-emitting elements positioned on one side of the signal lines away from the substrate, wherein the signal lines comprise overlapping parts, the orthographic projection of the overlapping parts on the substrate is positioned in the orthographic projection of the light-emitting elements on the substrate in the direction perpendicular to the display panel, the light-emitting layers overlap with N overlapping parts in the direction perpendicular to the display panel, N is larger than or equal to 2, N is an integer, and at least two overlapping parts are different in shape. The invention can weaken the influence of the scattered light of the light-emitting element on the display effect and improve the display quality.

Inventors

GUO LINSHAN
CAI XIANG
YUAN YONG
Kuang Yaqi

Assignees

湖北长江新型显示产业创新中心有限公司

Dates

Publication Date: 20260508
Application Date: 20201230

Claims (6)

1. A display panel, the display panel comprising: A substrate; A plurality of signal lines located at one side of the substrate; A plurality of light emitting elements located at a side of the signal line away from the substrate, wherein, The signal line comprises an overlapping part, and in the direction perpendicular to the display panel, the orthographic projection of the overlapping part on the substrate is positioned in the orthographic projection of the light-emitting element on the substrate; In the direction perpendicular to the display panel, the light-emitting element overlaps N overlapping parts, wherein N is more than or equal to 2, and N is an integer; The shape of at least two of the overlapping portions is different; The light emitting element comprises a first light emitting element and a second light emitting element adjacent to each other, wherein, The shape of the overlapping portion overlapping the first light emitting element and the shape of the overlapping portion overlapping the second light emitting element are different, and/or the width of the overlapping portion overlapping the first light emitting element and the width of the overlapping portion overlapping the second light emitting element are different, and/or the number of the overlapping portions overlapping the first light emitting element and the number of the overlapping portions overlapping the second light emitting element are different.
2. The display panel of claim 1, wherein the display panel comprises, The light emitting element includes a first electrode, a light emitting layer, and a second electrode stacked in this order, The orthographic projection of the overlapping part on the substrate is positioned in the orthographic projection of the light-emitting layer on the substrate.
3. The display panel of claim 1, wherein the display panel comprises, In the plane of the substrate, along the extending direction of the overlapping part, the orthographic projection of the overlapping part on the substrate at least has a first width and a second width, and the first width is unequal to the second width.
4. The display panel of claim 1, wherein the display panel comprises, The overlapping portion includes a first overlapping portion and a second overlapping portion in a direction perpendicular to the display panel; The display panel comprises a first metal layer and a second metal layer, wherein the first overlapping part is positioned on the first metal layer, the second overlapping part is positioned on the second metal layer, and the first overlapping part and the second overlapping part at least partially overlap in the direction perpendicular to the display panel.
5. The display panel of claim 1, wherein the display panel comprises, The display panel further comprises a first metal layer and a second metal layer, wherein the thickness of the second metal layer is larger than that of the first metal layer, The overlapping portion is located in the second metal layer.
6. A display device comprising the display panel according to any one of claims 1 to 5.

Description

Display panel and display device The application relates to a divisional application of application number 202011606057.8, application date 2020, 12 months and 30 days, and the application name of a display panel and a display device. Technical Field The present invention relates to the field of display technologies, and in particular, to a display panel and a display device. Background In the organic light emitting display technology, an organic light emitting diode is used as a light emitting device, and the organic light emitting diode includes an anode, a cathode, and an organic light emitting layer disposed between the anode and the cathode. After voltages are applied to the anode and the cathode of the light emitting diode, respectively, holes injected from the anode and electrons injected from the cathode combine in the organic light emitting layer to form excitons. The formed exciton emits light while falling from an excited state to a ground state, whereby an image can be displayed. Pixel circuits, which are typically used to drive organic light emitting diodes, are fabricated over a substrate, and then organic light emitting diodes are fabricated over the pixel circuits. And part of the signal lines in the pixel circuits are positioned right below the organic light emitting diodes. Since the signal line has a certain thickness and is uneven, the organic light emitting diode is fabricated on the uneven surface, and thus light generated from the organic light emitting layer is unevenly dispersed, which causes a dispersion problem of the display panel, affecting display quality. Disclosure of Invention The embodiment of the invention provides a display panel and a display device, which are used for solving the problem of display panel dispersion caused by scattering of a light-emitting element in the prior art. In a first aspect, an embodiment of the present invention provides a display panel, including: A substrate; A plurality of signal lines located at one side of the substrate; A plurality of light emitting elements located at a side of the signal line away from the substrate, wherein, The signal line comprises an overlapping part, and in the direction perpendicular to the display panel, the orthographic projection of the overlapping part on the substrate is positioned in the orthographic projection of the light-emitting element on the substrate; in the direction perpendicular to the display panel, the light-emitting layer is overlapped with N overlapped parts, wherein N is more than or equal to 2, and N is an integer; The shape of at least two of the overlapping portions is different. In a second aspect, an embodiment of the present invention provides a display device, including a display panel provided in any embodiment of the present invention. The display panel and the display device provided by the embodiment of the invention have the beneficial effects that the shape of the overlapping part overlapping with the light-emitting layer in the direction vertical to the display panel is designed so as to reduce the probability that scattered light emitted by the light-emitting element is captured by eyes of a user, weaken the influence of the scattered light of the light-emitting element on the display effect, weaken the dispersion problem of the display panel and improve the display quality. Drawings In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art. FIG. 1 is a schematic top view of a display panel according to the related art; FIG. 2 is a simplified schematic illustration of a cross-section taken at the location of line A-A' in FIG. 1; FIG. 3 is a schematic top view of a display panel according to an embodiment of the present invention; FIG. 4 is a simplified schematic illustration of a cross-section taken at the location of line B-B' in FIG. 3; FIG. 5 is a schematic top view of a portion of another display panel according to an embodiment of the invention; FIG. 6 is a schematic top view of a portion of another display panel according to an embodiment of the invention; FIG. 7 is a schematic top view of a portion of another display panel according to an embodiment of the invention; FIG. 8 is a schematic top view of a portion of another display panel according to an embodiment of the invention; FIG. 9 is a schematic top view of a portion of another display panel according to an embodiment of the invention; FIG. 10 is a schematic top view of a portion of another display panel according to an embodiment of the present invention; FIG. 11 is a schematic partial top view of another display panel according to a