CN-122003977-A - Display panel and display device

CN122003977ACN 122003977 ACN122003977 ACN 122003977ACN-122003977-A

Abstract

The present disclosure relates to the field of display technology, and provides a display panel and a display device, the display panel includes: the light emitting device comprises a substrate base plate, a plurality of light emitting units, a plurality of pixel driving circuits, an electrode layer and a pixel defining layer. The pixel driving circuit is used for driving the light-emitting units, a plurality of pixel driving circuits are distributed along a first direction and a second direction in an array mode, the first direction and the second direction are intersected, the pixel driving circuits form a plurality of pixel driving circuit line groups distributed in the second direction, each pixel driving circuit line group comprises two adjacent pixel driving circuit lines, each pixel driving circuit line comprises a plurality of pixel driving circuits distributed in the first direction, orthographic projections of two adjacent pixel driving circuit lines in the pixel driving circuit line groups on a substrate are arranged at least partially in a mirror symmetry mode along a first symmetry axis, the first symmetry axis is parallel to the first direction, each electrode layer comprises a plurality of electrode parts, each electrode part comprises a main body part and a connecting part, at least part of each main body part is used for forming a first electrode of the light-emitting unit, each connecting part is connected between the main body part and the pixel driving circuit, each pixel defining layer is arranged on one side of the substrate, each pixel defining layer is provided with a plurality of pixel openings, each pixel opening is correspondingly arranged on the pixel defining layer, orthographic projections of each pixel opening on the substrate are located on the main body part in the substrate corresponding electrode part, orthographic projections of the substrate are located in the substrate, each electrode part is used for forming a plurality of electrode parts in the same row in the first driving unit, each electrode part is used for forming a plurality of electrode part, each electrode part is electrically driven in the same as the first electrode part, and each electrode part is formed in the electrode part, and each electrode part is electrically connected in the electrode driving unit, the extension length of the orthographic projection of the connecting part connected with the first electrode part of the first pixel driving circuit on the substrate is larger than the extension length of the orthographic projection of the connecting part connected with the first electrode part of the second pixel driving circuit on the substrate, and the orthographic projection area of the main body part connected with the first electrode part of the first pixel driving circuit on the substrate is smaller than the orthographic projection area of the main body part connected with the first electrode part of the second pixel driving circuit on the substrate. The display panel has a good display effect.

Inventors

HU YAOYAO
ZHANG RUNXIN
WANG RUI
ZENG CHAO

Assignees

京东方科技集团股份有限公司
重庆京东方显示技术有限公司

Dates

Publication Date: 20260508
Application Date: 20240902

Claims (20)

A display panel, wherein the display panel comprises: a substrate base; A plurality of light emitting units; The pixel driving circuits are used for driving the light emitting units, and are distributed along a first direction and a second direction in an array mode, and the first direction and the second direction are intersected; The pixel driving circuits form a plurality of pixel driving circuit row groups distributed in a second direction, wherein each pixel driving circuit row group comprises two adjacent pixel driving circuit rows, and each pixel driving circuit row comprises a plurality of pixel driving circuits distributed in the first direction; orthographic projections of two adjacent pixel driving circuit rows in the pixel driving circuit row group on the substrate are at least partially arranged in a mirror symmetry mode along a first symmetry axis, and the first symmetry axis is parallel to the first direction; An electrode layer including a plurality of electrode parts including a main body part at least partially for forming a first electrode of the light emitting unit, and a connection part connected between the main body part and the pixel driving circuit; The pixel defining layer is positioned at one side of the electrode layer, which is away from the substrate, and a plurality of pixel openings are formed on the pixel defining layer, the pixel openings are correspondingly arranged with the electrode parts, and the orthographic projection of the pixel openings on the substrate is positioned in the orthographic projection of the main body part in the electrode part corresponding to the pixel openings on the substrate; The plurality of electrode parts comprise a plurality of first electrode parts which are used for respectively forming first electrodes of the same-color light emitting units; In the same pixel driving circuit row group, the pixel driving circuits in one pixel driving circuit row form a first pixel driving circuit, and the pixel driving circuits in the other pixel driving circuit row form a second pixel driving circuit; The length of the orthographic projection of the connecting part connected with the first electrode part of the first pixel driving circuit on the substrate is longer than that of the connecting part connected with the first electrode part of the second pixel driving circuit on the substrate, and the area of the orthographic projection of the main body part connected with the first electrode part of the first pixel driving circuit on the substrate is smaller than that of the main body part connected with the first electrode part of the second pixel driving circuit on the substrate.
The display panel of claim 1, wherein the main body portion includes a body portion and an extension portion, the extension portion disposed around the body portion, an orthographic projection of the pixel opening on the substrate coincident with an orthographic projection of the corresponding body portion on the substrate; the main body portion connected to the first electrode portion of the second pixel driving circuit further includes a first protruding portion connected to the extension portion.
The display panel of claim 1, wherein the main body portion includes a body portion and an extension portion, the extension portion disposed around the body portion, an orthographic projection of the pixel opening on the substrate coincident with an orthographic projection of the corresponding body portion on the substrate; a first missing portion is formed on an epitaxial portion of the first electrode portion connected to the first pixel driving circuit.
A display panel according to any one of claims 1-3, wherein the display panel comprises a green light emitting unit, a red light emitting unit, a blue light emitting unit; the first electrode part is used for forming a first electrode of the green light-emitting unit; or, the first electrode part is used for forming a first electrode of the red light emitting unit; or, the first electrode portion is used to form a first electrode of the blue light emitting unit.
The display panel of claim 2, wherein the display panel further comprises: the second source-drain layer is positioned between the substrate base plate and the electrode layer and at least comprises a data line; Wherein, the orthographic projection of the first protruding part on the substrate and the orthographic projection of the second source-drain layer on the substrate are overlapped at least partially.
The display panel of claim 2, wherein the pixel drive circuit comprises one or more transistors, an orthographic projection of the first boss on the substrate and an orthographic projection of at least a portion of a channel region of the transistor on the substrate overlap.
The display panel according to claim 2, wherein a length of an orthographic projection of an outer edge of the epitaxial portion on the substrate is L1, and an extension length of an orthographic projection of an intersection line between the first convex portion and the epitaxial portion on the substrate is L2, L2/L1 being 20% or more and 1 or less.
A display panel according to claim 3, wherein the first missing portion is provided around an outer periphery of the extension portion.
The display panel of claim 3, wherein the first missing portion is a notch or a through hole formed on the extension portion.
The display panel according to any one of claims 1 to 9, wherein the display panel comprises a green light emitting unit, a red light emitting unit, a blue light emitting unit; The plurality of electrode parts comprise a plurality of R electrode parts, a plurality of G electrode parts and a plurality of B electrode parts, wherein the R electrode parts are used for forming a first electrode of a red light emitting unit, the G electrode parts are used for forming a first electrode of a green light emitting unit, and the B electrode parts are used for forming a first electrode of a blue light emitting unit; The first direction is a row direction, the second direction is a column direction, and among a plurality of electrode parts connected to the same row of pixel driving circuits, orthographic projections of R electrode parts, G electrode parts, B electrode parts and G electrode parts on the substrate are alternately distributed in sequence in the row direction; In the adjacent two-column pixel driving circuits, the R electrode parts and the B electrode parts are connected to the same-column pixel driving circuit, orthographic projections of the R electrode parts and the B electrode parts connected to the same-column pixel driving circuit on the substrate are alternately distributed in sequence in the column direction, and the G electrode parts are connected to the other-column pixel driving circuit.
The display panel according to claim 10, wherein the pixel driving circuit row group includes a plurality of repeating units distributed in a first direction, the repeating units including two rows and four columns of the pixel driving circuits, the first electrode portion being a G electrode portion; in the same repeating unit, the two G electrode portions connected to the first pixel driving circuit respectively form a first G electrode portion and a second G electrode portion, an extension length of a front projection of a connection portion in the first G electrode portion on the substrate is greater than an extension length of a front projection of a connection portion in the second G electrode portion on the substrate, and an area of a front projection of a main body portion in the first G electrode portion on the substrate is smaller than an area of a front projection of a main body portion in the second G electrode portion on the substrate.
The display panel of claim 11, wherein the main body portion includes a body portion and an extension portion, the extension portion disposed around the body portion, an orthographic projection of the pixel opening on the substrate coincident with an orthographic projection of the corresponding body portion on the substrate; the main body of the second G electrode part further comprises a second protruding part, and the second protruding part is connected to the extension part; Or, a second missing portion is formed on the extension portion of the first G electrode portion.
The display panel according to any one of claims 1 to 12, wherein a difference between an area of orthographic projection of the first electrode portion connected to the first pixel driving circuit on the substrate and an area of orthographic projection of the first electrode portion connected to the second pixel driving circuit on the substrate is S1, and an area of orthographic projection of the first electrode portion connected to the first pixel driving circuit on the substrate is S2, S1/S2 is 0 or more and 5% or less.
The display panel according to any one of claims 1-12, wherein the second direction is a column direction, the pixel driving circuit comprises a plurality of transistors, and orthographic projections of channel regions of the same transistor on the substrate are arranged in mirror symmetry along the first symmetry axis in two pixel driving circuits of the same row group and the same column.
The display panel according to any one of claims 1 to 12, wherein the second direction is a column direction, the pixel driving circuit includes a seventh transistor having a first electrode connected to a second initial signal line and a second electrode connected to a first electrode of the light emitting unit; The display panel further includes: an active layer between the substrate and the electrode layer, the active layer including a seventh active portion and a twelfth active portion, the seventh active portion being configured to form a channel region of the seventh transistor, the two seventh active portions being connected by the twelfth active portion in two pixel driving circuits of a same row group and a same column of the pixel driving circuits; and the orthographic projection of the second initial signal line on the substrate base plate extends along the first direction, and the second initial signal line is connected with the twelfth active part through a via hole.
The display panel according to any one of claims 1 to 12, wherein the second direction is a column direction, the pixel driving circuit includes a driving transistor, an eighth transistor, a first pole of the eighth transistor being connected to a third initial signal line, a second pole of the eighth transistor being connected to the first pole of the driving transistor; The display panel further includes: An active layer located on one side of the substrate, the active layer including an eighth active portion and a tenth active portion, the eighth active portion being configured to form a channel region of the eighth transistor, the two eighth active portions being connected through the tenth active portion in two pixel driving circuits of a same row group and a same column of the pixel driving circuits; And the orthographic projection of the third initial signal line on the substrate base plate extends along the first direction, and the third initial signal line is connected with the tenth active part through a via hole.
The display panel according to any one of claims 1-12, wherein orthographic projections of two pixel driving circuits adjacent in the first direction on the substrate are arranged at least partially mirror-symmetrically along a second symmetry axis extending in the column direction.
The display panel of any one of claims 1-17, wherein the display panel further comprises: And a data line for supplying a data signal to the pixel driving circuit, the data line extending in a column direction.
The display panel of any one of claims 1-18, wherein the body portion comprises a body portion and an extension portion, the extension portion disposed around the body portion, an orthographic projection of the pixel opening onto the substrate coincident with an orthographic projection of the corresponding body portion onto the substrate; Orthographic projection of the epitaxial part on the substrate base plate forms an annular structure with equal width.
The display panel according to claim 19, wherein the plurality of electrode parts includes a plurality of R electrode parts for forming a first electrode of a red light emitting unit, a plurality of G electrode parts for forming a first electrode of a green light emitting unit, and a plurality of B electrode parts for forming a first electrode of a blue light emitting unit; The width of the equal-width annular structure formed by the extension part in the R electrode part, the width of the equal-width annular structure formed by the extension part in the G electrode part and the width of the equal-width annular structure formed by the extension part in the B electrode part are equal.

Description

Display panel and display device Technical Field The disclosure relates to the field of display technologies, and in particular, to a display panel and a display device. Background In the related art, there is a difference in the area of the electrode part in the display panel, thereby causing the display panel to have lateral stripes. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of Invention According to an aspect of the present disclosure, there is provided a display panel, wherein the display panel includes: a substrate base; A plurality of light emitting units; The pixel driving circuits are used for driving the light emitting units, and are distributed along a first direction and a second direction in an array mode, and the first direction and the second direction are intersected; The pixel driving circuits form a plurality of pixel driving circuit row groups distributed in a second direction, wherein each pixel driving circuit row group comprises two adjacent pixel driving circuit rows, and each pixel driving circuit row comprises a plurality of pixel driving circuits distributed in the first direction; orthographic projections of two adjacent pixel driving circuit rows in the pixel driving circuit row group on the substrate are at least partially arranged in a mirror symmetry mode along a first symmetry axis, and the first symmetry axis is parallel to the first direction; An electrode layer including a plurality of electrode parts including a main body part at least partially for forming a first electrode of the light emitting unit, and a connection part connected between the main body part and the pixel driving circuit; The pixel defining layer is positioned at one side of the electrode layer, which is away from the substrate, and a plurality of pixel openings are formed on the pixel defining layer, the pixel openings are correspondingly arranged with the electrode parts, and the orthographic projection of the pixel openings on the substrate is positioned in the orthographic projection of the main body part in the electrode part corresponding to the pixel openings on the substrate; The plurality of electrode parts comprise a plurality of first electrode parts which are used for respectively forming first electrodes of the same-color light emitting units; In the same pixel driving circuit row group, the pixel driving circuits in one pixel driving circuit row form a first pixel driving circuit, and the pixel driving circuits in the other pixel driving circuit row form a second pixel driving circuit; The length of the orthographic projection of the connecting part connected with the first electrode part of the first pixel driving circuit on the substrate is longer than that of the connecting part connected with the first electrode part of the second pixel driving circuit on the substrate, and the area of the orthographic projection of the main body part connected with the first electrode part of the first pixel driving circuit on the substrate is smaller than that of the main body part connected with the first electrode part of the second pixel driving circuit on the substrate. In one exemplary embodiment of the disclosure, the main body portion includes a body portion and an extension portion, the extension portion is disposed around the body portion, and an orthographic projection of the pixel opening on the substrate coincides with an orthographic projection of the corresponding body portion on the substrate; the main body portion connected to the first electrode portion of the second pixel driving circuit further includes a first protruding portion connected to the extension portion. In one exemplary embodiment of the disclosure, the main body portion includes a body portion and an extension portion, the extension portion is disposed around the body portion, and an orthographic projection of the pixel opening on the substrate coincides with an orthographic projection of the corresponding body portion on the substrate; a first missing portion is formed on an epitaxial portion of the first electrode portion connected to the first pixel driving circuit. In one exemplary embodiment of the present disclosure, the display panel includes a green light emitting unit, a red light emitting unit, a blue light emitting unit; the first electrode part is used for forming a first electrode of the green light-emitting unit; or, the first electrode part is used for forming a first electrode of the red light emitting unit; or, the first electrode portion is used to form a first electrode of the blue light emitting unit. In an exemplary embodiment of the present disclosure, the display panel further includes: the second source-drain layer is positioned between the substrate base p