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CN-121985663-A - Display panel and display device

CN121985663ACN 121985663 ACN121985663 ACN 121985663ACN-121985663-A

Abstract

The application relates to a display panel and a display device, which comprise a substrate, a light-emitting unit, at least one light blocking structure, at least one light shielding structure and at least one light shielding structure, wherein the substrate is at least arranged in a non-light-transmitting area, the light-emitting unit is arranged on one side of the substrate and is positioned in the non-light-transmitting area, the distance between the surface of one side of the light blocking structure, which faces the light-emitting unit, and the substrate is greater than the distance between the surface of one side of the light-emitting unit, which faces the substrate, and the light shielding structure is at least partially positioned on one side of the light-emitting unit, which faces the light-transmitting area, in orthographic projection of the substrate. According to the application, at least part of the light blocking structure is arranged on one side of the light emitting unit facing the light transmitting area, and the height of the light blocking structure along the direction away from the substrate is designed to be larger than that of the light emitting unit, so that the light blocking structure is positioned on the propagation path of large-view-angle light rays causing back light leakage as much as possible, most of the large-view-angle light rays are blocked, the light rays are blocked from entering the light transmitting area, and the problem of privacy leakage of information visible from the back is solved.

Inventors

  • LI MINGJUAN
  • ZHOU WENQI
  • HUO SITAO
  • WU TIANYI

Assignees

  • 天马新型显示技术研究院(厦门)有限公司

Dates

Publication Date
20260505
Application Date
20260226

Claims (20)

  1. 1. The display panel is characterized by comprising a light transmission area and a non-light transmission area, wherein the non-light transmission area is arranged on at least one side of the light transmission area, and the display panel comprises: The substrate is at least arranged in the non-light-transmitting area; the light-emitting unit is arranged on one side of the substrate and is positioned in the non-light-transmitting area; The light blocking structure is arranged on one side of the substrate facing the light emitting unit, and the distance between the surface of one side of the light blocking structure, which is away from the substrate, and the substrate is larger than the distance between the surface of one side of the light emitting unit, which is away from the substrate, and the substrate; And/or the light emitting unit comprises a plurality of light emitting devices, and the light blocking structure is arranged between at least two adjacent light emitting devices in the plurality of light emitting devices; and/or the light blocking structure is arranged at two opposite sides of the light emitting unit.
  2. 2. The display panel of claim 1, wherein an orthographic projection of the light blocking structure overlaps an orthographic projection portion of the light emitting unit in a direction in which the non-light transmitting region is directed toward the light transmitting region.
  3. 3. The display panel according to claim 1, wherein the light blocking structure includes a first end close to the substrate and a second end distant from the substrate, and a direction from the first end to the second end is parallel to a thickness direction of the substrate.
  4. 4. The display panel according to claim 1, wherein the light blocking structure includes a first end close to the substrate and a second end distant from the substrate, and a direction from the first end to the second end obliquely intersects a thickness direction of the substrate.
  5. 5. The display panel of claim 4, wherein a distance from the second end of the light blocking structure to the light transmitting region along a direction in which the non-light transmitting region is directed toward the light transmitting region is less than a distance from the first end of the light blocking structure to the light transmitting region.
  6. 6. The display panel of claim 4, wherein the light blocking structure is inclined toward the human eye from the direction in which the second end points toward the first end.
  7. 7. The display panel according to claim 1, wherein the light blocking structures located at opposite sides of the light emitting unit are inclined with respect to a thickness direction of the substrate, and the inclination directions are the same.
  8. 8. The display panel according to claim 1, wherein the light blocking structure includes a first light blocking portion and a second light blocking portion, the first light blocking portion and the second light blocking portion being located on opposite sides of the light emitting unit in a first direction, respectively, the first light blocking portion being consistent in an extending direction away from the substrate and the second light blocking portion being in an extending direction away from the substrate, the first direction being a direction in which the non-light transmitting region points to the light transmitting region.
  9. 9. The display panel of claim 1, wherein the display panel comprises a plurality of light emitting units having at least a portion of the light transmitting region therebetween, and wherein the light emitting units comprise a plurality of light emitting devices.
  10. 10. The display panel according to claim 1, wherein at least a partial region between the light emitting unit and the light transmitting region is provided with at least two layers of the light blocking structures, and the at least two layers of the light blocking structures are arranged at intervals along a direction in which the non-light transmitting region points to the light transmitting region.
  11. 11. The display panel according to claim 10, wherein a distance from an end of the at least two light blocking structures away from the substrate to the substrate increases gradually from the non-light transmitting region toward the light transmitting region.
  12. 12. The display panel according to claim 1, wherein the light blocking structure includes a third light blocking portion and a fourth light blocking portion, the third light blocking portion being located at least in a partial region between the light emitting unit and the light transmitting region; And the third light blocking part size is larger than the fourth light blocking part size along the direction that the non-light transmitting area points to the light transmitting area.
  13. 13. The display panel according to claim 1, wherein a dimension of the light blocking structure in a direction in which the non-light transmitting region points to the light transmitting region is smaller than a dimension of the light blocking structure in a thickness direction of the substrate.
  14. 14. The display panel according to claim 1, further comprising a protective layer provided on a side of the light emitting unit facing away from the substrate, wherein the protective layer is provided on both the light transmitting region and the light non-transmitting region; The light blocking structure is arranged in the protective layer.
  15. 15. The display panel of claim 14, wherein the protective layer comprises an encapsulation layer, an adhesive layer, and a cover sheet layer stacked in a direction away from the substrate; the light blocking structure is arranged between the substrate and the packaging layer; The light blocking structure is arranged between the bonding layer and the cover plate layer; Or the light blocking structure is arranged between the bonding layer and the packaging layer; or the cover plate layer is provided with a containing groove along the thickness direction of the substrate, and at least part of the light blocking structure is positioned in the containing groove; or the packaging layer is provided with an accommodating groove along the thickness direction of the substrate, and at least part of the light blocking structure is positioned in the accommodating groove.
  16. 16. The display panel of claim 14, wherein a portion of the light emitted by the light emitting unit is defined to have a critical angle α of total reflection at an interface of the protective layer away from the substrate; at least part of the light blocking structure is arranged on a transmission path of part of light rays with the total reflection critical angle alpha.
  17. 17. The display panel of claim 16, wherein one of the light emitting devices in the light emitting unit is defined to have a first height H in a thickness direction of the substrate and a width W in a direction of the non-light transmitting region toward the light transmitting region, and wherein the light blocking structure has a second height H2 in the thickness direction of the substrate, a distance from the substrate of the light blocking structure is H1, and a distance from the corresponding light emitting device is D, the light blocking structure satisfying: H2=H+W/tanα,H1=D/tanα。
  18. 18. The display panel of claim 1, wherein the substrate comprises a plurality of the light emitting units arranged along at least one of a row and a column, the light emitting units comprising a plurality of light emitting devices; at least part of the light-transmitting area is arranged between the adjacent light-emitting units.
  19. 19. The display panel of claim 18, wherein the same light-emitting unit is provided with a continuous light-blocking structure at its periphery, the light-blocking structure being annular in orthographic projection on the substrate.
  20. 20. The display panel of claim 1, wherein the light emitting unit comprises one of a micro light emitting diode, an organic light emitting diode, a quantum dot light emitting diode; and/or the material of the light blocking structure comprises at least one of resin matrix composite material, carbon black, metal oxide and gold black photoresist.

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 Along with the continuous development of display technology, various display devices have been widely applied to electronic products such as smart phones, tablet computers, notebook computers, intelligent wearable devices and the like, and become a core carrier for users to acquire visual information. The transparent display device is a display device that can provide a transparent display state for a user to watch the back view, and is commonly used in a demonstration board, a showcase, a vending machine, etc. The transparent display device is provided with a display area and a light transmission area, wherein the display area can provide a display picture for a user to watch, and the light transmission area is in a transparent state so that the user can watch a rear scene. Pixels are arranged in the display area to emit image light beams towards the display surface of the transparent display device so as to provide pictures. Disclosure of Invention Accordingly, there is a need for a display panel and a display device, which are capable of solving the problem of backside light leakage caused by that part of the image light beam is reflected back to the inside of the light transmission area at the interface between the display surface and the outside in the transparent display device in the related art. In a first aspect, an embodiment of the present application provides a display panel having a light-transmitting region and a light-non-transmitting region, where the light-non-transmitting region is disposed on at least one side of the light-transmitting region, the display panel including: The substrate is at least arranged in the non-light-transmitting area; the light-emitting unit is arranged on one side of the substrate and is positioned in the non-light-transmitting area; The light blocking structure is arranged on one side of the substrate facing the light emitting unit, and the distance between the surface of one side of the light blocking structure, which is away from the substrate, and the substrate is larger than the distance between the surface of one side of the light emitting unit, which is away from the substrate, and the substrate; And/or the light emitting unit comprises a plurality of light emitting devices, and the light blocking structure is arranged between at least two adjacent light emitting devices in the plurality of light emitting devices; and/or the light blocking structure is arranged at two opposite sides of the light emitting unit. In a second aspect, an embodiment of the present application further provides a display apparatus, where the display apparatus includes the display panel provided in the first aspect. According to the display panel provided by the embodiment of the application, at least part of the light blocking structure is arranged on one side of the light emitting unit facing the light transmitting area, and the height of the light blocking structure along the direction away from the substrate is designed to be larger than that of the light emitting unit, so that the light blocking structure is located on the propagation path of large-view-angle light rays causing back light leakage as much as possible, most of the large-view-angle light rays are blocked, the light rays are blocked from entering the light transmitting area, and the problem of privacy leakage of information visible from the back is solved. Drawings Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of another display panel according to an embodiment of the present application; FIG. 3 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; FIG. 4 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; FIG. 5 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; Fig. 6 is a schematic front view of a display panel according to an embodiment of the present application; FIG. 7 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; Fig. 8 is a schematic front view of another display panel according to an embodiment of the application; FIG. 9 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; FIG. 10 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; FIG. 11 is a schematic cross-sectional view of a display panel according to another embodiment of the present application; FIG. 12 is a schematic cross-sectional view of a display panel according to anothe