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CN-122028611-A - Display panel, preparation method thereof and display device

CN122028611ACN 122028611 ACN122028611 ACN 122028611ACN-122028611-A

Abstract

The application provides a display panel, a preparation method thereof and a display device, wherein a substrate comprises a driving circuit, a light-emitting element is electrically connected with the driving circuit through a connecting via hole, a pixel limiting structure is arranged on one side of the substrate, the pixel limiting structure comprises a first groove, orthographic projection of the first groove on the substrate overlaps orthographic projection of the light-emitting element on the substrate, a blocking structure penetrates through at least part of the pixel limiting structure, orthographic projection of the blocking structure on the substrate surrounds orthographic projection of part of the light-emitting element on the substrate, a supporting layer is arranged on one side, far away from the substrate, of the pixel limiting structure, the connecting via hole comprises a first connecting via hole, orthographic projection of the first connecting via hole on the substrate is covered by orthographic projection of the first groove on the substrate, and the minimum distance between the first connecting via hole and the first groove in orthographic projection of the substrate is a, and a is more than 0. Therefore, the structure stability of the light-emitting element can be ensured, and the overall display effect of the display panel is ensured.

Inventors

  • OUYANG ZILIN

Assignees

  • 武汉天马微电子有限公司

Dates

Publication Date
20260512
Application Date
20260210

Claims (13)

  1. 1. A display panel, comprising; A substrate including a driving circuit including at least one transistor; a plurality of light emitting elements located on one side of the substrate base plate, the light emitting elements being electrically connected to the driving circuit through connection vias; The pixel limiting structure comprises a first groove, wherein the first groove penetrates through the pixel limiting structure, and the orthographic projection of the first groove on the substrate overlaps with the orthographic projection of the light-emitting element on the substrate; A blocking structure extending through at least a portion of the pixel defining structure, the orthographic projection of the blocking structure on the substrate surrounding the orthographic projection of a portion of the light emitting element on the substrate; The support layer is positioned on one side of the pixel limiting structure far away from the substrate base plate, the thickness of the support layer is h1 along the thickness direction of the substrate base plate, the thickness of the pixel limiting structure is h2, and the ratio of I h1 to h 2I/h 2 is less than or equal to 0.2; The connecting via hole comprises a first connecting via hole, the orthographic projection of the first groove on the substrate covers the orthographic projection of the first connecting via hole on the substrate, and in the orthographic projection of the substrate, the minimum distance between the first connecting via hole and the first groove is a, wherein a is more than 0.
  2. 2. The display panel according to claim 1, wherein a plurality of the light emitting elements are arranged in a first direction; In the orthographic projection of the substrate, the distances between the first connecting via hole and the first grooves on two sides are L1 and L2 respectively along the first direction, and the distance is L1-L2/L2 which is less than or equal to 20%, wherein the first direction is parallel to the plane of the substrate.
  3. 3. The display panel of claim 1, wherein an orthographic projection of the first connection via on the substrate coincides with an orthographic projection of a center of the first recess on the substrate.
  4. 4. The display panel of claim 1, wherein the connection via further comprises a second connection via; the orthographic projection of the first groove on the substrate and the orthographic projection of the second connecting via on the substrate are not overlapped.
  5. 5. The display panel according to claim 4, wherein the blocking structure includes a first blocking unit and a second blocking unit, the light emitting element surrounded by the first blocking unit is electrically connected to the driving circuit through the first connection via, and the light emitting element surrounded by the second blocking unit is electrically connected to the driving circuit through the second connection via; the second blocking unit comprises a first blocking subsection and a first fracture which are sequentially distributed around the light-emitting element, the orthographic projection of the second connecting via hole on the substrate is at least partially overlapped with the orthographic projection of the first fracture on the substrate, and the orthographic projection of the second connecting via hole on the substrate is not overlapped with the orthographic projection of the first blocking subsection on the substrate.
  6. 6. The display panel according to claim 4, wherein the blocking structure includes a first blocking unit and a second blocking unit, the light emitting element surrounded by the first blocking unit is electrically connected to the driving circuit through the first connection via, and the light emitting element surrounded by the second blocking unit is electrically connected to the driving circuit through the second connection via; the second blocking unit comprises a second blocking subsection and a second fracture which are sequentially distributed around the light-emitting element; The display panel further comprises an extension part which is respectively connected with the light-emitting element and the second connection via hole, the orthographic projection of the extension part on the substrate base plate and the orthographic projection of the second fracture on the substrate base plate are at least partially overlapped, and the orthographic projection of the extension part on the substrate base plate and the orthographic projection of the second blocking subsection on the substrate base plate are not overlapped; and on the projection of the substrate, the light-emitting element surrounded by the second blocking unit is positioned at one side of the second blocking unit away from the second connection via hole.
  7. 7. The display panel according to claim 4, wherein the light emitting element includes a first light emitting element and a second light emitting element, and wherein an outgoing light wavelength of the first light emitting element is smaller than an outgoing light wavelength of the second light emitting element; the blocking structure comprises a first blocking unit and a second blocking unit, the first light-emitting element surrounded by the first blocking unit is electrically connected with the driving circuit through the first connecting via hole, and the second light-emitting element surrounded by the second blocking unit is electrically connected with the driving circuit through the second connecting via hole; the first blocking unit comprises a third blocking subsection and a third fracture which are sequentially distributed around the first light-emitting element; the second blocking unit comprises a fourth blocking subsection and a fourth fracture which are sequentially distributed around the second light-emitting element; And the orthographic projection area of the third fracture on the substrate is smaller than that of the fourth fracture on the substrate.
  8. 8. The display panel of claim 1, wherein the blocking structure extends through the pixel defining structure.
  9. 9. The display panel according to claim 1, wherein the light-emitting element includes a first electrode layer, a second electrode layer, and a common light-emitting layer, the first electrode layer being located on a side of the common light-emitting layer close to the substrate, the common light-emitting layer being located on a side of the second electrode layer close to the first electrode layer; at least a portion of the pixel defining structure is located on a side of the first electrode layer remote from the substrate base plate.
  10. 10. The display panel of claim 9, wherein the common light emitting layer comprises at least two light emitting film layers.
  11. 11. The display panel of claim 1, wherein the display panel comprises, The light emitting elements comprise a first color light emitting element, a second color light emitting element and a third color light emitting element, wherein the first color light emitting element, the second color light emitting element and the third color light emitting element are one of a red light emitting element, a blue light emitting element and a green light emitting element and are different from each other; A plurality of the first color light emitting elements and the second color light emitting elements constitute a first virtual quadrangle, the first color light emitting elements are located at first vertexes of the first virtual quadrangle, centers of the second color light emitting elements are located at second vertexes of the first virtual quadrangle, the first vertexes and the second vertexes are alternately and spaced apart, and the third color light emitting elements are located inside the first virtual quadrangle; The plurality of third color light emitting elements form a second virtual quadrangle, centers of the plurality of third color light emitting elements are respectively positioned at vertexes of the second virtual quadrangle, and the first color light emitting element or the second color light emitting element is positioned inside the second virtual quadrangle.
  12. 12. A method for manufacturing a display panel, the method comprising: providing a substrate, wherein the substrate comprises a driving circuit, and the driving circuit comprises at least one transistor; Preparing a light emitting element and a pixel defining layer, wherein the light emitting element is positioned on one side of the substrate, and the light emitting element is electrically connected with the driving circuit through a connecting via hole; Etching the pixel defining layer by using a first mask plate and preparing a first groove and a blocking structure, wherein the first groove penetrates through the pixel defining structure, and the orthographic projection of the first groove on the substrate overlaps with the orthographic projection of the light emitting element on the substrate, the blocking structure penetrates through at least part of the pixel defining structure, and the orthographic projection of the blocking structure on the substrate surrounds the orthographic projection of part of the light emitting element on the substrate, the connecting via comprises a first connecting via, the orthographic projection of the first groove on the substrate covers the orthographic projection of the first connecting via on the substrate, and in the orthographic projection of the substrate, the minimum distance between the first connecting via and the first groove is a, wherein a >0; preparing a support film layer, wherein the support film layer is positioned on one side of the pixel limiting structure away from the substrate base plate; And etching the support film layer by using the first mask and adjusting the opening position of the first mask to form a support layer, wherein the thickness of the support layer is h1, and the thickness of the pixel limiting structure is h2 along the thickness direction of the substrate, wherein I h1-h 2I/h 2 is less than or equal to 0.2.
  13. 13. A display device comprising the display panel of any one of claims 1-11.

Description

Display panel, preparation method thereof and display device Technical Field The application relates to the technical field of display panels, in particular to a display panel, a preparation method thereof and a display device. Background With the continuous development of display technology, display panels have been widely used in the production and life of people. In order to better meet the demands of people, the display panel can be adjusted, for example, the film layer structure near the light-emitting element in the display panel is adjusted, so that the overall effect of the display panel is improved. Disclosure of Invention The embodiment of the application provides a display panel, a preparation method thereof and a display device, wherein the relative positions of a connecting via hole and a blocking structure are adaptively adjusted, so that the structural stability of a light-emitting element can be ensured, and the integral display effect of the display panel is ensured. In a first aspect, an embodiment of the present application provides a display panel, including; A substrate including a driving circuit including at least one transistor; a plurality of light emitting elements located on one side of the substrate base plate, the light emitting elements being electrically connected to the driving circuit through connection vias; The pixel limiting structure comprises a first groove, wherein the first groove penetrates through the pixel limiting structure, and the orthographic projection of the first groove on the substrate overlaps with the orthographic projection of the light-emitting element on the substrate; A blocking structure extending through at least a portion of the pixel defining structure, the orthographic projection of the blocking structure on the substrate surrounding the orthographic projection of a portion of the light emitting element on the substrate; The support layer is positioned on one side of the pixel limiting structure far away from the substrate base plate, the thickness of the support layer is h1 along the thickness direction of the substrate base plate, the thickness of the pixel limiting structure is h2, and the ratio of I h1 to h 2I/h 2 is less than or equal to 0.2; The connecting via hole comprises a first connecting via hole, the orthographic projection of the first groove on the substrate covers the orthographic projection of the first connecting via hole on the substrate, and in the orthographic projection of the substrate, the minimum distance between the first connecting via hole and the first groove is a, wherein a is more than 0. In a second aspect, an embodiment of the present application provides a method for manufacturing a display panel, including: providing a substrate, wherein the substrate comprises a driving circuit, and the driving circuit comprises at least one transistor; Preparing a light emitting element and a pixel defining layer, wherein the light emitting element is positioned on one side of the substrate, and the light emitting element is electrically connected with the driving circuit through a connecting via hole; Etching the pixel defining layer by using a first mask plate and preparing a first groove and a blocking structure, wherein the first groove penetrates through the pixel defining structure, and the orthographic projection of the first groove on the substrate overlaps with the orthographic projection of the light emitting element on the substrate, the blocking structure penetrates through at least part of the pixel defining structure, and the orthographic projection of the blocking structure on the substrate surrounds the orthographic projection of part of the light emitting element on the substrate, the connecting via comprises a first connecting via, the orthographic projection of the first groove on the substrate covers the orthographic projection of the first connecting via on the substrate, and in the orthographic projection of the substrate, the minimum distance between the first connecting via and the first groove is a, wherein a >0; preparing a support film layer, wherein the support film layer is positioned on one side of the pixel limiting structure away from the substrate base plate; And etching the support film layer by using the first mask and adjusting the opening position of the first mask to form a support layer, wherein the thickness of the support layer is h1, and the thickness of the pixel limiting structure is h2 along the thickness direction of the substrate, wherein I h1-h 2I/h 2 is less than or equal to 0.2. In a third aspect, an embodiment of the present application provides a display device, including the display panel according to any one of the first aspects. In summary, the embodiment of the application provides a display panel, which comprises a substrate, a plurality of light emitting elements and a pixel limiting structure, wherein the light emitting elements and the pixel limiting structure are pos