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CN-122018216-A - Display panel and display device

CN122018216ACN 122018216 ACN122018216 ACN 122018216ACN-122018216-A

Abstract

The application discloses a display panel and a display device, wherein a cofferdam is arranged between an array substrate and a counter substrate, the cofferdam is provided with a plurality of openings, the array substrate and the counter substrate squeeze the cofferdam, the cofferdam has elastic restoring force, and a sealing cavity is formed by the openings, the array substrate and the counter substrate. The electrophoretic particles are disposed in the sealed cavity. The display panel and the display device provided by the embodiment of the application adopt the elastic cofferdam to be arranged between the array substrate and the opposite substrate, the elastic cofferdam is extruded by the action of the array substrate and the opposite substrate in the process of forming the box, and the cofferdam is compressed to have elastic restoring force based on the compression of the cofferdam, so that the cofferdam is respectively in sealing contact with the array substrate and the opposite substrate, the gap between the array substrate or the opposite substrate and the cofferdam in the prior art is eliminated, the risk of flowing of electrophoretic particles through the gap is avoided, and the pressing uniformity and the display uniformity are improved.

Inventors

  • PU SHAN

Assignees

  • TCL华星光电技术有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (16)

  1. 1. A display panel, comprising: An array substrate; the opposite substrate is arranged opposite to the array substrate; The array substrate and the opposite substrate squeeze the cofferdam, the cofferdam has elastic restoring force, and the openings, the array substrate and the opposite substrate form a sealing cavity; And the electrophoresis particles are arranged in the sealing cavity.
  2. 2. The display panel of claim 1, wherein the dam has an elastic recovery of between 75% and 80%.
  3. 3. The display panel of claim 2, wherein the compression ratio of the bank is between 45% and 50%.
  4. 4. The display panel of claim 2, wherein the dam has an elastic modulus between 2 gigapascals and 3 gigapascals.
  5. 5. The display panel of claim 1, wherein the bank comprises a black material.
  6. 6. The display panel according to claim 1, wherein the array substrate includes a plurality of pixel electrodes with a gap between two adjacent pixel electrodes, the bank is disposed at the gap, and the electrophoretic particles are located in the region of the pixel electrodes.
  7. 7. The display panel according to claim 6, wherein the array substrate includes a first substrate and a metal electrode, the metal electrode is located at a side of the pixel electrode close to the first substrate, and the metal electrode and the pixel electrode are arranged in different layers; In the display panel in a top view, the bank is located outside the metal electrode.
  8. 8. The display panel according to claim 7, wherein the array substrate includes a thin film transistor disposed on the first substrate and a flat layer covering the thin film transistor, the metal electrode is disposed on a side of the flat layer away from the first substrate, and the flat layer includes a black material.
  9. 9. The display panel of claim 7, wherein the array substrate further comprises a light absorbing layer disposed on a side of the first substrate adjacent to the metal electrode or on a side of the first substrate remote from the metal electrode.
  10. 10. The display panel according to claim 6, wherein the array substrate includes a first substrate and a metal electrode, the metal electrode is located on a side of the pixel electrode close to the first substrate, the metal electrode and the pixel electrode are arranged in different layers, and the bank is at least partially overlapped with the metal electrode in a thickness direction of the display panel; The display panel comprises a black matrix layer, wherein the black matrix layer and the cofferdam are overlapped in the thickness direction of the display panel, and the black matrix layer is formed on the opposite substrate or the array substrate.
  11. 11. The display panel according to claim 6, wherein the array substrate includes a first substrate and a metal electrode, the metal electrode is located on a side of the pixel electrode close to the first substrate, the metal electrode and the pixel electrode are arranged in different layers, and the bank is at least partially overlapped with the metal electrode in a thickness direction of the display panel; the metal electrode is a ferrous metal.
  12. 12. The display panel according to claim 1, wherein the bank is formed in the counter substrate, a groove is formed in a side of the array substrate facing the counter substrate, and a side of the bank remote from the counter substrate is disposed in the groove.
  13. 13. The display panel according to claim 12, wherein the array substrate includes a first substrate, a thin film transistor, a flat layer, and a pixel electrode, the thin film transistor is disposed on the first substrate, the flat layer covers the thin film transistor, and the pixel electrode is disposed on a side of the flat layer away from the first substrate; the grooves are formed in the flat layer and are arranged at intervals with the pixel electrodes.
  14. 14. The display panel according to claim 1, wherein the bank is formed in the array substrate, a groove is formed in a side of the opposite substrate facing the array substrate, and a side of the bank away from the array substrate is disposed in the groove.
  15. 15. The display panel according to claim 14, wherein the counter substrate includes a second substrate, a cover layer and a common electrode layer, the cover layer is disposed on a side of the second substrate close to the array substrate, the cover layer is provided with hollowed-out openings corresponding to the regions of the cofferdam, the common electrode layer is disposed on a side of the cover layer away from the second substrate, and the common electrode layer covers the hollowed-out openings to form the grooves; the cofferdam abuts the common electrode layer in the groove.
  16. 16. A display device comprising a display panel as claimed in any one of claims 1-15.

Description

Display panel and display device Technical Field The present application relates to the field of display technologies, and in particular, to a display panel and a display device. Background In the existing electrophoretic electronic paper, the cofferdam is generally prepared from a material with higher rigidity. The rigidity based on the cofferdam is higher, and the cofferdam is easy to break after being pressed, so that the electronic ink can flow through the gap between the cofferdam and the opposite substrate, and the problem of uneven pressing is caused. Secondly, the height of the cofferdam is inconsistent due to instability in the process, the rigidity of the cofferdam is high, a gap exists between a shorter enclosing wall and the opposite substrate, and the electronic ink can flow through the gap between the cofferdam and the opposite substrate during pressing, so that the problem of uneven pressing is caused. Disclosure of Invention The embodiment of the application provides a display panel and a display device, which aim to at least partially solve the technical problems. In order to achieve the above object, according to a first aspect of the present application, there is provided a display panel comprising: An array substrate; the opposite substrate is arranged opposite to the array substrate; The array substrate and the opposite substrate squeeze the cofferdam, the cofferdam has elastic restoring force, and the openings, the array substrate and the opposite substrate form a sealing cavity; And the electrophoresis particles are arranged in the sealing cavity. Alternatively, in some embodiments of the application, the dam has an elastic recovery of between 75% and 80%. Alternatively, in some embodiments of the application, the cofferdam has a compressibility of between 45% and 50%. Alternatively, in some embodiments of the application, the cofferdam has a modulus of elasticity between 2 gigapascals and 3 gigapascals. Alternatively, in some embodiments of the application, the cofferdam comprises black material. Optionally, in some embodiments of the present application, the array substrate includes a plurality of pixel electrodes, a gap is provided between two adjacent pixel electrodes, the bank is disposed at the gap, and the electrophoretic particles are located in the region of the pixel electrodes. Optionally, in some embodiments of the present application, the array substrate includes a first substrate and a metal electrode, where the metal electrode is located on a side of the pixel electrode close to the first substrate, and the metal electrode and the pixel electrode are disposed in different layers; In the display panel in a top view, the bank is located outside the metal electrode. Alternatively, in some embodiments of the present application, the array substrate includes a thin film transistor disposed on the first substrate and a planarization layer covering the thin film transistor, the metal electrode is disposed on a side of the planarization layer away from the first substrate, and the planarization layer includes a black material. Optionally, in some embodiments of the present application, the array substrate further includes a light absorbing layer disposed on a side of the first substrate close to the metal electrode or on a side of the first substrate far from the first substrate. Optionally, in some embodiments of the present application, the array substrate includes a first substrate and a metal electrode, the metal electrode is located on a side of the pixel electrode close to the first substrate, the metal electrode and the pixel electrode are arranged in different layers, and the bank at least partially overlaps with the metal electrode in a thickness direction of the display panel; The display panel comprises a black matrix layer, wherein the black matrix layer and the cofferdam are overlapped in the thickness direction of the display panel, and the black matrix layer is formed on the opposite substrate or the array substrate. Optionally, in some embodiments of the present application, the array substrate includes a first substrate and a metal electrode, the metal electrode is located on a side of the pixel electrode close to the first substrate, the metal electrode and the pixel electrode are arranged in different layers, and the bank at least partially overlaps with the metal electrode in a thickness direction of the display panel; the metal electrode is a ferrous metal. Alternatively, in some embodiments of the present application, the bank is formed at the opposite substrate, a groove is formed at a side of the array substrate facing the opposite substrate, and a side of the bank remote from the opposite substrate is disposed in the groove. Optionally, in some embodiments of the present application, the array substrate includes a first substrate, a thin film transistor, a flat layer, and a pixel electrode, the thin film transistor is disposed on the first substrate, th