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US-12628322-B2 - Display panel and display device

US12628322B2US 12628322 B2US12628322 B2US 12628322B2US-12628322-B2

Abstract

Embodiments of the present disclosure are directed to a display panel and a display device. The display panel includes a display body, a first back plate, a second back plate and a buffer support structure. The buffer support structure is connected to the first back plate and the second back plate. At least one of the first back plate and the second back plate has a groove placed at one side facing the buffer support structure and the buffer support structure is partially placed in the groove. The distance between the first back plate and the second back plate is reduced and thus the bending radius of the bending part is reduced.

Inventors

  • Shaobo Sun

Assignees

  • WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.

Dates

Publication Date
20260512
Application Date
20220413
Priority Date
20220317

Claims (17)

  1. 1 . A display panel, comprising: a display body, comprising: a display part; a bonding part, placed oppositely to the display part; and a bending part, connected between the display part and the bonding part; a first back plate, placed at one side of the display part facing the bonding part; a second back plate, placed at one side of the bonding part facing the display part; and a buffer support structure, connected to the first back plate and the second back plate; wherein the buffer support structure comprises a buffer layer and a supporting layer orderly placed from the first back plate toward the second back plate; a first sub-groove is recessed from a surface of the second back plate facing the supporting layer into inside of the second back plate, to define a first bottom and a first side wall; a second sub-groove is recessed from a surface of the first back plate facing the buffer layer into inside of the first back plate, to define a second bottom and a second side wall; a part of the buffer layer close to the first back plate is placed in the second sub-groove, a top surface of the part of the buffer layer is contacted with the second bottom, sides of the part of the buffer layer are surrounded by the second side wall, and a part of the second side wall is positioned between the part of the buffer layer and the bending part; and a part of the supporting layer close to the second back plate is placed in the first sub-groove, a bottom surface of the part of the supporting layer is contacted with the first bottom, sides of the part of the supporting layer are surrounded by the first side wall, and a part of the first side wall is positioned between the part of the supporting layer and the bending part.
  2. 2 . The display panel of claim 1 , wherein the display part comprises a switch control layer and a light emitting layer electrically connected to the switch control layer.
  3. 3 . The display panel of claim 2 , further comprising a circuit board electrically connected to the switch control layer, wherein the bonding part is connected to the circuit board at a side of the display part away from the display part.
  4. 4 . The display panel of claim 1 , wherein the supporting layer comprises a first glue layer, a wave absorption layer and a second glue layer orderly placed from the first back plate toward the second back plate; and wherein the second glue layer is placed in the first sub-groove; or wherein the second glue layer and the wave absorption layer are placed in the first sub-groove.
  5. 5 . The display panel of claim 4 , wherein the first glue layer is adhered to the buffer layer, and the second glue layer is adhered to the second back plate.
  6. 6 . The display panel of claim 1 , wherein the supporting layer is wholly placed in the first sub-groove.
  7. 7 . The display panel of claim 1 , wherein an orthogonal projection of the second sub-groove on the buffer layer covers an orthogonal projection of the first sub-groove on the buffer layer.
  8. 8 . The display panel of claim 7 , wherein the buffer layer covers the supporting layer.
  9. 9 . The display panel of claim 1 , wherein the buffer layer is wholly placed in the second sub-groove.
  10. 10 . The display panel of claim 1 , wherein the first sub-groove extends along a direction of the bending part and passes through the first side wall away from the bending part.
  11. 11 . The display panel of claim 1 , wherein a first gap is defined between the supporting layer and the first side wall; and second gap is defined between the buffer layer and the second side wall.
  12. 12 . The display panel of claim 11 , wherein the second gap is smaller than the first gap.
  13. 13 . The display panel of claim 1 , wherein the buffer layer is made of a conductive foam.
  14. 14 . The display panel of claim 1 , wherein a bending diameter of the bending part of the display body is smaller than a sum of a thickness of the first back plate, a thickness of the second back plate and a thickness of the buffer support structure and is greater than a sum of the thickness of the first back plate and the thickness of the second back plate.
  15. 15 . The display panel of claim 1 , further comprising: a polarizer, placed at one side of the display part of the display body facing away the first back plate; an optical adhesive layer, placed above the polarizer; and a cover plate, placed above the optical adhesive layer.
  16. 16 . A display device, comprising a display panel of claim 1 .
  17. 17 . The display device of claim 16 , further comprising: a housing, connecting the display panel; and a control circuit, disposed within the housing and electrically connected to the display panel.

Description

FIELD OF THE DISCLOSURE The present disclosure relates to a display technology, and more particularly, to a display panel and a display device. BACKGROUND As the development progress of the display fields, a display tends to be thinner and have narrower side frame. A flexible display panel could reduce the size of the lower side frame by bending the display panel body. For better balancing the applied force of the bending wires, there is a higher demand for the bending technique of the display panel. However, the bending radius of the bending part of the conventional display panel is too long such that the minimum size of the side frame of the display panel is limited and thus the narrow side frame demand cannot be met. SUMMARY Technical Problem One objective of an embodiment of the present disclosure is to provide a display panel and a display device, to solve the above-mentioned issue of the long bending radius. Technical Solution According to an embodiment of the present disclosure, a display panel is disclosed. The display panel comprises: a display body, a first back plate, a second back plate and a buffer support structure. The display body comprises: a display part; a bonding part, placed oppositely to the display part; and a bending part, connected between the display part and the bonding part. The first back plate is placed at one side of the display part facing the bonding part. The second back plate is placed at one side of the bonding part facing the display part. The buffer support structure is connected to the first back plate and the second back plate. At least one of the first back plate and the second back plate has a groove placed at one side facing the buffer support structure and the buffer support structure is partially placed in the groove. Optionally, the display part comprises a switch control layer and a light emitting layer electrically connected to the switch control layer. Optionally, the display panel further comprises a circuit board electrically connected to the switch control layer. The bonding part is connected to the circuit board at a side of the display part away from the display part. Optionally, the buffer support structure comprises a buffer layer and a supporting layer orderly placed from the first back plate toward the second back plate. Optionally, a first sub-groove is placed at one side of the second back plate facing the supporting layer, and at least a part of the supporting layer is placed in the first sub-groove. Optionally, the supporting layer comprises a first glue layer, a wave absorption layer and a second glue layer orderly placed from the first back plate toward the second back plate. The second glue layer is placed in the first sub-groove. Optionally, the second glue layer and the wave absorption layer are placed in the first sub-groove. Optionally, the first glue layer is adhered to the buffer layer, and the second glue layer is adhered to the second back plate. Optionally, the supporting layer is wholly placed in the first sub-groove. Optionally, a second sub-groove is placed at one side of the first back plate facing the buffer layer, the second groove and the first groove are oppositely placed, and the buffer layer is partially placed in the second sub-groove. Optionally, an orthogonal projection of the second sub-groove on the buffer layer covers an orthogonal projection of the first sub-groove on the buffer layer. Optionally, the buffer layer covers the supporting layer. Optionally, the buffer layer is wholly placed in the second sub-groove. Optionally, the first sub-groove extends along a direction of the bending part and passes through a side surface of the second back plate facing away the bending part. The buffer layer is partially placed in the first sub-groove. Optionally, the supporting layer and a sidewall of the first sub-groove have a first gap in-between. The buffer layer and a sidewall of the second sub-groove have a second gap in-between. Optionally, the second gap between buffer layer and the sidewall of the second sub-groove is smaller than the first gap between the supporting layer and the sidewall of the first sub-groove. Optionally, the buffer layer is made of a conductive foam. Optionally, a bending diameter of the bending part of the display panel body is smaller than a sum of a thickness of the first back plate, a thickness of the second back plate and a thickness of the buffer support structure and is greater than a sum of the thickness of the first back plate and the thickness of the second back plate. Optionally, the display panel further includes a polarizer, an optical adhesive layer, and a cover plate. The polarizer is placed at one side of the display part of the display panel part facing away the first back plate. The optical adhesive layer is placed above the polarizer. The cover plate is placed above the optical adhesive layer. According to another embodiment of the present disclosure, a display device is disclosed.