Search

CN-121996088-A - Display panel and manufacturing method thereof

CN121996088ACN 121996088 ACN121996088 ACN 121996088ACN-121996088-A

Abstract

The application relates to a display panel and a manufacturing method of the display panel. The display panel comprises a substrate, a plurality of sub-pixels, a plurality of conductive structures, a plurality of touch electrodes and a plurality of isolation structures. The sub-pixels are arranged on the substrate at intervals and comprise a first electrode, a light-emitting part and a second electrode which are stacked along the direction away from the substrate. The touch electrode and the sub-pixel are arranged on the substrate at intervals, the touch electrode and the second electrode are arranged on the same layer, and the touch electrode is electrically connected with the corresponding conductive structure. The isolation structure is used for separating the adjacent second electrode from the adjacent touch electrode. The display panel can realize in-screen touch control, and is further beneficial to reducing the thickness of the display panel.

Inventors

  • XING RUBO

Assignees

  • 苏州国显创新科技有限公司

Dates

Publication Date
20260508
Application Date
20241031

Claims (10)

  1. 1. A display panel, comprising: a substrate; The display device comprises a substrate, a plurality of sub-pixels, a display device and a display device, wherein the sub-pixels are arranged on the substrate at intervals and comprise a first electrode, a light-emitting part and a second electrode which are stacked along a direction away from the substrate; The touch electrodes and the subpixels are arranged on the substrate at intervals and are arranged on the same layer as the second electrode, the touch electrodes correspond to the conductive structures and are electrically connected with the corresponding conductive structures, and The touch control device comprises a substrate, a plurality of isolation structures, at least one isolation structure, a plurality of touch control electrodes and a plurality of touch control electrodes, wherein the isolation structures are arranged on the substrate, each isolation structure is positioned between two adjacent sub-pixels, at least part of the isolation structures are orthographically projected on the substrate, orthographically projected on the substrate around the adjacent conductive structures, and the isolation structures are used for spacing the adjacent second electrodes from the adjacent touch control electrodes.
  2. 2. The display panel of claim 1, wherein the conductive structure is co-layer with the first electrode; Optionally, the conductive structure comprises a first conductive part extending along a first direction and a second conductive part extending along a second direction, wherein the first direction and the second direction intersect each other and are parallel to the substrate; Optionally, the first direction and the second direction are perpendicular to each other; Optionally, the conductive structure further includes a third conductive portion, where the third conductive portion is disposed at an intersection of the first conductive portion and the second conductive portion; Optionally, the third conductive portion has a dimension greater than the dimension of the first conductive portion in a first width direction, wherein the first width direction is perpendicular to the lengthwise direction of the first conductive portion and perpendicular to the thickness direction of the substrate, and/or the third conductive portion has a dimension greater than the dimension of the second conductive portion in a second width direction, wherein the second width direction is perpendicular to the lengthwise direction of the second conductive portion and perpendicular to the thickness direction of the substrate; optionally, an orthographic projection of the third conductive portion on the substrate is configured as at least one of a circle, a square, and a diamond; Optionally, the first conductive portion has a dimension of 3-18 microns in the first width direction, and/or The second conductive part has a size of 3-18 micrometers along the second width direction; Optionally, the orthographic projection of the touch electrode on the substrate covers the orthographic projection of the conductive structure on the substrate; optionally, the orthographic projection of the conductive structure on the substrate is configured as at least one of a cross-fork shape, a diagonal cross shape, a star shape and an I shape, and/or the orthographic projection of the touch electrode on the substrate is configured as at least one of a cross-fork shape, a diagonal cross shape, a star shape and an I shape; optionally, a plurality of the sub-pixels are arranged in rows along a third direction, and are arranged in columns along a fourth direction intersecting the third direction; The third direction is parallel to the first direction, the fourth direction is parallel to the second direction, or the first direction, the second direction, the third direction and the fourth direction are intersected pairwise and are parallel to the substrate; Optionally, the third direction is one of a length direction of the substrate and a width direction of the substrate, and the fourth direction is the other of the length direction of the substrate and the width direction of the substrate.
  3. 3. The display panel of claim 1, further comprising signal lines disposed on the substrate, the signal lines being electrically connected to the plurality of conductive structures, respectively; optionally, the conductive structure includes a first conductive portion and a second conductive portion that are cross-connected; Optionally, in the adjacent two conductive structures, the adjacent two first conductive portions are connected or the adjacent two second conductive portions are connected; Optionally, a plurality of the subpixels are arranged in rows and columns; The conductive structures of adjacent rows are connected to each other and/or the conductive structures of adjacent columns are connected to each other, the conductive structures of the same row are connected to each other and/or the conductive structures of the same column are connected to each other; optionally, the touch electrode includes two touch structures connected in a cross manner; Optionally, in the two adjacent touch electrodes, the two adjacent touch structures are connected; Optionally, the touch electrodes of adjacent rows are connected to each other, and/or the touch electrodes of adjacent columns are connected to each other, the touch electrodes of the same row are connected to each other, and/or the touch electrodes of the same column are connected to each other.
  4. 4. A display panel according to any one of claims 1 to 3, further comprising a virtual light emitting portion provided in the same layer as the light emitting portion, the virtual light emitting portion being located at least on a side of the conductive structure away from the substrate, the touch electrode covering the virtual light emitting portion, and a portion of the touch electrode covering and protruding from an edge of the virtual light emitting portion being electrically connected to the conductive structure; optionally, the front projection of the bottom surface of the isolation structure on the substrate is located in the front projection of the top surface of the isolation structure on the substrate; Optionally, the isolation structure includes a first isolation portion and a second isolation portion stacked in a direction away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located in an orthographic projection of the second isolation portion on the substrate.
  5. 5. The display panel according to claim 4, further comprising an electrical switching portion between the conductive structure and the dummy light emitting portion, wherein a portion of the touch electrode that covers and protrudes from an edge of the dummy light emitting portion is electrically connected to the corresponding conductive structure through the electrical switching portion; at least part of the isolation structure is arranged around the electric switching part; optionally, the display panel further includes a pixel defining layer disposed on the substrate, the pixel defining layer covering the first electrode and the conductive structure, and the electrical switching portion and the isolation structure are disposed on a side of the pixel defining layer away from the substrate; The pixel definition layer is provided with a first via hole connection structure, and the electric switching part is electrically connected with the conductive structure through the first via hole connection structure; The pixel definition layer is provided with a pixel opening for at least partially exposing the first electrode, and the light emitting part and the second electrode are stacked on the first electrode and positioned in the pixel opening; Optionally, the touch electrode comprises a first touch part arranged on one side of the virtual light-emitting part far away from the electric switching part and a second touch part positioned on the outer side of the first touch part, wherein the second touch part is electrically connected with the conductive structure through the electric switching part and is electrically contacted with the electric switching part; Optionally, the material of the electrical adapter includes one or more of titanium, aluminum, molybdenum, and copper.
  6. 6. The display panel according to claim 4, wherein at least part of the isolation structure is disposed around the conductive structure, and the portion of the touch electrode that covers and protrudes from the edge of the dummy light emitting portion is in electrical contact with the corresponding conductive structure.
  7. 7. The display panel according to claim 6, further comprising a pixel defining layer disposed on the substrate, wherein the pixel defining layer covers a portion of the first electrode and a portion of the conductive structure, and a pixel opening for exposing the first electrode is disposed on the pixel defining layer, and at least a portion of the light emitting portion and at least a portion of the second electrode layer are sequentially stacked on the first electrode and are disposed in the pixel opening; the touch electrode is contacted with the exposed conductive structure; Optionally, the touch electrode includes a first touch portion disposed at a side of the virtual light emitting portion away from the conductive structure, and a second touch portion disposed outside the first touch portion, where the second touch portion contacts with the exposed conductive structure; optionally, the virtual light emitting part includes a first sub light emitting part and a second sub light emitting part, the first sub light emitting part is arranged at one side of the conductive structure far away from the substrate, and the second sub light emitting part covers the isolation structure; the touch electrode further comprises a third touch control part connected with the second touch control part, and the third touch control part is arranged on one side, far away from the substrate, of the second sub-luminous part; at least part of the isolation structure is positioned on one side of the conductive structure away from the substrate, and a step difference exists between the isolation structure and the conductive structure; optionally, the pixel defining layer includes a first portion partially covering an inner sidewall of the isolation structure, the first portion covering a portion of the conductive structure and exposing another portion of the conductive structure; the virtual light-emitting part further comprises a third sub-light-emitting part connected between the first sub-light-emitting part and the second sub-light-emitting part, and the third sub-light-emitting part is arranged on one side of the first part far away from the isolation structure; the touch electrode further comprises a fourth touch control part, the fourth touch control part is connected between the second touch control part and the third touch control part, and the fourth touch control part is arranged on one side, far away from the first part, of the third sub-luminous part; Optionally, the first portion includes a first wall surface, and the third sub-light emitting portion and the fourth touch portion are stacked on the first wall surface; the first wall surface is arranged in an outward inclined manner from one side close to the substrate to one side far away from the substrate; Optionally, the distance from the side of the first portion away from the substrate to the substrate is greater than the distance from the side of the isolation structure away from the substrate to the substrate, and the first portion covers a portion of the isolation structure.
  8. 8. A display panel according to any one of claims 1-3, further comprising a pixel defining layer provided on the substrate, the pixel defining layer covering at least the first electrode and being provided with a pixel opening for at least partially exposing the first electrode, the light emitting portion and the second electrode being stacked on the first electrode and being located within the pixel opening; Optionally, the conductive structure is spaced from the adjacent pixel opening by a distance of 2-8 microns, and/or The distance between the touch electrode and the adjacent pixel opening is 2-8 micrometers.
  9. 9. The manufacturing method of the display panel is characterized by comprising the following steps of: Providing a substrate, wherein a plurality of first electrodes and a plurality of conductive structures are arranged on the substrate at intervals; forming a pixel defining layer and a plurality of isolation structures on the substrate, wherein a plurality of pixel openings for at least partially exposing the first electrode are arranged on the pixel defining layer; Forming a light emitting part covering the first electrode on the substrate, wherein at least part of the light emitting part is arranged in the pixel opening; Forming a second electrode covering the light-emitting part and a touch electrode arranged on the same layer as the second electrode on the substrate, wherein at least part of the second electrode is arranged in the pixel opening; Each isolation structure is positioned between two adjacent sub-pixels, at least part of the isolation structures are orthographic projected on the substrate, orthographic projection is arranged on the substrate around the adjacent conductive structures, the isolation structures are used for separating the adjacent second electrodes from the adjacent touch electrodes, and the touch electrodes are electrically connected with the corresponding conductive structures.
  10. 10. The method of manufacturing a display panel according to claim 9, wherein the isolation structure includes a first isolation portion and a second isolation portion stacked in a direction away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate; optionally, the forming a light emitting part covering the first electrode on the substrate specifically includes: Forming a light-emitting part covered on the first electrode and a virtual light-emitting part arranged on the same layer as the light-emitting part on the substrate at a first vapor deposition angle; the forming a second electrode covering the light emitting part on the substrate and a touch electrode arranged on the same layer as the second electrode specifically includes: Forming a second electrode covering the light-emitting part and a touch electrode covering the virtual light-emitting part on the substrate at a second evaporation angle, wherein the touch electrode is electrically connected with the exposed conductive structure, or, The display panel further comprises an electric switching part, wherein the electric switching part and the isolation structure are arranged on one side, far away from the substrate, of the pixel definition layer, a first via hole connection structure is arranged on the pixel definition layer, and the electric switching part is electrically connected with the conductive structure through the first via hole connection structure; the forming a light emitting portion covering the first electrode on the substrate specifically includes: forming a light-emitting part covered on the first electrode and a virtual light-emitting part arranged on the same layer as the light-emitting part on the substrate at a first vapor deposition angle, wherein the virtual light-emitting part covers one part of the electric switching part and exposes the other part of the electric switching part; the forming a second electrode covering the light emitting part on the substrate and a touch electrode arranged on the same layer as the second electrode specifically includes: forming a second electrode covering the light-emitting part on the substrate at a second evaporation angle, and forming a touch electrode covering the virtual light-emitting part; The touch electrode is electrically connected with the conductive structure through the exposed electric switching part; The second evaporation angle is larger than the first evaporation angle, the first evaporation angle is an included angle between a central axis of a first evaporation nozzle used for evaporating the light-emitting part and a target plane, the second evaporation angle is an included angle between the central axis of a second evaporation nozzle used for evaporating the second electrode and the target plane, and the target plane is a plane perpendicular to the thickness direction of the substrate.

Description

Display panel and manufacturing method thereof Technical Field The application relates to the technical field of display, in particular to a display panel and a manufacturing method of the display panel. Background Touch screens (English is called Touch Panel), also called Touch screens and Touch panels, are induction type display devices capable of receiving input signals such as contacts, and are widely applied to various electronic products. Along with the development of display technology, the conventional touch screen has been developed to a certain extent in light and thin aspects, so that how to reduce the thickness of the display panel becomes one of the future development trends of the display panel. Disclosure of Invention Accordingly, it is necessary to provide a display panel and a method for manufacturing the display panel, aiming at the problem of how to reduce the thickness of the display panel. According to a first aspect of the present application, there is provided a display panel comprising: a substrate; The display device comprises a substrate, a plurality of sub-pixels, a display device and a display device, wherein the sub-pixels are arranged on the substrate at intervals and comprise a first electrode, a light-emitting part and a second electrode which are stacked along a direction away from the substrate; The touch electrodes and the subpixels are arranged on the substrate at intervals and are arranged on the same layer as the second electrode, the touch electrodes correspond to the conductive structures and are electrically connected with the corresponding conductive structures, and The isolation structures are arranged on the substrate, each isolation structure is located between two adjacent sub-pixels, at least part of the isolation structures are orthographic projected on the substrate, orthographic projection is arranged on the substrate around the adjacent conductive structures, and the isolation structures are used for spacing the adjacent second electrodes from the adjacent touch electrodes. In one embodiment, the conductive structure is co-layer with the first electrode; Optionally, the conductive structure comprises a first conductive part extending along a first direction and a second conductive part extending along a second direction, wherein the first direction and the second direction intersect each other and are parallel to the substrate; Optionally, the first direction and the second direction are perpendicular to each other; Optionally, the conductive structure further includes a third conductive portion, where the third conductive portion is disposed at an intersection of the first conductive portion and the second conductive portion; Optionally, the third conductive portion has a dimension greater than the dimension of the first conductive portion in a first width direction, wherein the first width direction is perpendicular to the lengthwise direction of the first conductive portion and perpendicular to the thickness direction of the substrate, and/or the third conductive portion has a dimension greater than the dimension of the second conductive portion in a second width direction, wherein the second width direction is perpendicular to the lengthwise direction of the second conductive portion and perpendicular to the thickness direction of the substrate; optionally, an orthographic projection of the third conductive portion on the substrate is configured as at least one of a circle, a square, and a diamond; Optionally, the first conductive portion has a dimension of 3-18 microns in the first width direction, and/or The second conductive part has a size of 3-18 micrometers along the second width direction; Optionally, the orthographic projection of the touch electrode on the substrate covers the orthographic projection of the conductive structure on the substrate; Optionally, the orthographic projection of the conductive structure on the substrate is configured as at least one of a cross-fork shape, a diagonal cross shape, a star shape and an I shape, and/or the orthographic projection of the touch electrode on the substrate is configured as at least one of a cross-fork shape, a diagonal cross shape, a star shape or an I shape; optionally, a plurality of the sub-pixels are arranged in rows along a third direction, and are arranged in columns along a fourth direction intersecting the third direction; The third direction is parallel to the first direction, the fourth direction is parallel to the second direction, or the first direction, the second direction, the third direction and the fourth direction are intersected pairwise and are parallel to the substrate; Optionally, the third direction is one of a length direction of the substrate and a width direction of the substrate, and the fourth direction is the other of the length direction of the substrate and the width direction of the substrate. In one embodiment, the display panel further includes signal lines dis