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EP-4447021-B1 - DISPLAY PANEL, MANUFACTURING METHOD FOR DISPLAY PANEL, AND DISPLAY APPARATUS

EP4447021B1EP 4447021 B1EP4447021 B1EP 4447021B1EP-4447021-B1

Inventors

  • Wang, Yanqiang
  • GAO, TAO
  • WANG, YUNHAO
  • XIA, WEI

Dates

Publication Date
20260506
Application Date
20220729

Claims (14)

  1. A display panel (20), comprising: a base substrate (21); a plurality of light-emitting units (22) disposed on the base substrate (21); a first light-transmitting layer (23) disposed on the base substrate (21) provided with the plurality of light-emitting units (22), wherein the first light-transmitting layer (23) comprises a plurality of holes (k), and an orthographic projection of a first light-emitting unit (221) in the plurality of light-emitting units (22) on the base substrate (21) is overlapped with an orthographic projection of a first hole (k1) in the plurality of holes (k) on the base substrate (21); and a light-transmitting pattern (24) disposed on the base substrate (21) provided with the first light-transmitting layer (23), wherein the light-transmitting pattern (24) comprises a plurality of light-transmitting structures (241), a first light-transmitting structure (241a) in the plurality of light-transmitting structures (241) covers the first hole (k1) and at least a portion of the first light-transmitting layer (23), and a refractive index of a material of the light-transmitting pattern (24) is greater than a refractive index of a material of the first light-transmitting layer (23); characterized in that : the display panel comprises an effective display region (AA) and a peripheral region outside the effective display region (AA); wherein the light-transmitting pattern (24) is within the effective display region (AA); and the display panel further comprises a target pattern (25) disposed on the base substrate (21) provided with the light-emitting units (22), wherein the target pattern (25) is within the peripheral region, and a refractive index of a material of the target pattern (25) is greater than the refractive index of the material of the first light-transmitting layer (23).
  2. The display panel (20) according to claim 1, wherein the first light-transmitting structure (241a) comprises a first portion (1a) covering the first light-transmitting layer (23) and a second portion (1b) within the first hole (k1), a height, in a first direction (f1) perpendicular to and away from the base substrate (21), of the first portion (1a) being greater than a height, in the first direction (f1), of the second portion (1b).
  3. The display panel (20) according to claim 2, wherein a top surface of the first portion (1a) of the first light-transmitting structure (241a) comprises a curved surface projecting toward a direction away from the base substrate (21).
  4. The display panel (20) according to claim 1, wherein a wall of the first hole (k1) in the first light-transmitting layer (23) is inclined toward a direction away from a center of the first hole (k1), and an inclination angle of the wall is greater than a total reflection critical angle of an interface of the light-transmitting pattern (24) and the first light-transmitting layer (23).
  5. The display panel (20) according to claim 1, wherein the target pattern (25) and the light-transmitting pattern (24) are disposed in a same layer.
  6. The display panel (20) according to claim 1, wherein the target pattern (25) comprises at least one block structure group (251), each of the at least one block structure group (251) comprising a plurality of block structures (2a) outside the effective display region (AA) and arranged along an edge of the effective display region (AA).
  7. The display panel (20) according to claim 1, wherein the target pattern (25) comprises a strip-shaped structure (252), the strip-shaped structure (252) being outside the effective display region (AA) and extending along an edge of the effective display region (AA); wherein the target pattern (25) comprises at least two strip-shaped structures (252), the at least two strip-shaped structures (252) being outside the effective display region (AA) and successively arranged along a direction away from a center of the display panel.
  8. The display panel (20) according to any one of claims 1 to 4, further comprising: a first protrusion structure (t1); wherein the first protrusion structure (t1) is within the hole (k) in the first light-transmitting layer (23); and a portion, covering the first protrusion structure (t1), of the first light-transmitting structure (241a) comprises a second protrusion structure (t2).
  9. The display panel (20) according to claim 1, further comprising: a barrier dam (26) disposed at an edge of the base substrate (21), wherein an orthographic projection of the target pattern (25) on the base substrate (21) is disposed on a side, proximal to a center of the display panel, of an orthographic projection of the barrier dam (26) on the base substrate (21).
  10. The display panel (20) according to claim 1, further comprising: a barrier dam (26) disposed at an edge of the base substrate (21), wherein the target pattern (25) covers the barrier dam (26).
  11. The display panel (20) according to any one of claims 1 to 4, wherein the light-transmitting structure (241) is a color film layer; and the display panel further comprises a black matrix pattern (26) disposed on the base substrate (21) provided with the light-transmitting pattern (24), wherein the black matrix pattern (26) comprises a cutout region (q3), and an orthographic projection of the first hole (k1) in the first light-transmitting layer (23) on the base substrate (21) is within an orthographic projection of the cutout region (q3) on the base substrate (21).
  12. The display panel (20) according to any one of claims 1 to 4, wherein the first light-transmitting layer (23) comprises a first region (x1) covered by the first light-transmitting structure (241a) and a second region (x2) not covered by the first light-transmitting structure (241a), a thickness of a portion, within the first region (x1), of the first light-transmitting layer (23) being greater than a thickness of a portion, within the second region (x2), of the first light-transmitting layer (23).
  13. A method for manufacturing a display panel (20), applicable to manufacturing the display panel (20) as defined in any one of claims 1 to 12, the method comprising: acquiring (1301) a base substrate (21); forming (1302) a plurality of light-emitting units (22) on the base substrate (21); forming (1303) a first light-transmitting layer (23) on the base substrate (21) on which the plurality of light-emitting units (22) are formed, wherein the first light-transmitting layer (23) comprises a plurality of holes (k), an orthographic projection of a first light-emitting unit (221) in the plurality of light-emitting units (22) on the base substrate (21) is overlapped with an orthographic projection of a first hole (k1) in the plurality of holes (k) on the base substrate (21); forming (1304) a light-transmitting material layer on the base substrate (21) on which the first light-transmitting layer (23) is formed, wherein a refractive index of a material of the light-transmitting material layer is greater than a refractive index of a material of the first light-transmitting layer (23); and acquiring (1305) a light-transmitting pattern (24) by processing the light-transmitting material layer by a patterning process, wherein the light-transmitting pattern (24) comprises a plurality of light-transmitting structures (241), a first light-transmitting structure (241a) in the plurality of light-transmitting structures (241) covering the first hole (k1) and at least a portion of the first light-transmitting layer (24); characterized in that : the display panel comprises an effective display region (AA) and a peripheral region outside the effective display region (AA); wherein the light-transmitting pattern (24) is within the effective display region (AA); and the display panel further comprises a target pattern (25) disposed on the base substrate (21) provided with the light-emitting units (22), wherein the target pattern (25) is within the peripheral region, and a refractive index of a material of the target pattern (25) is greater than the refractive index of the material of the first light-transmitting layer (23).
  14. A display device, comprising: the display panel (20) as defined in any of claims 1 to 12.

Description

TECHNICAL FIELD The present disclosure relates to the field of display technologies, and in particular, relates to a display panel, a method for manufacturing the same, and a display device. BACKGROUND Display panels are components capable of displaying images. CN217035670U describes a display panel and a display device. CN114068843A describes a display panel and a display device. SUMMARY Some embodiments of the present disclosure provide a display panel, a method for manufacturing the same, and a display device. The technical solutions are as follows. According to one aspect of the embodiments of the present disclosure, a display panel is provided. The display panel is as defined in claim 1. Optionally, the first light-transmitting structure includes a first portion covering the first light-transmitting layer and a second portion within the first hole, wherein a height, in a first direction perpendicular to and away from the base substrate, of the first portion is greater than a height, in the first direction, of the second portion. Optionally, a top surface of the first portion of the first light-transmitting structure includes a curved surface projecting toward a direction away from the base substrate. Optionally, a side surface of the first portion is a slope inclined toward a direction facing a center of the first hole, and an inclination angle of the side surface of the first portion is greater than or equal to 50 degrees. Optionally, the inclination angle of the side surface of the first portion ranges from 70 degrees to 80 degrees. Optionally, a wall of the first hole in the first light-transmitting layer is inclined toward a direction away from a center of the first hole, and an inclination angle of the wall is greater than a total reflection critical angle of an interface of the light-transmitting pattern and the first light-transmitting layer. Optionally, the target pattern and the light-transmitting pattern are disposed in a same layer. Optionally, the target pattern includes at least one block structure group, wherein each of the at least one block structure group includes a plurality of block structures outside the effective display region and arranged along an edge of the effective display region. Optionally, the target pattern includes at least two block structure groups, wherein the at least two block structure groups are successively arranged along a direction away from a center of the display panel. Optionally, the target pattern includes a strip-shaped structure, wherein the strip-shaped structure is outside the effective display region and extending along an edge of the effective display region. Optionally, the target pattern includes at least two strip-shaped structures, wherein the at least two strip-shaped structures are outside the effective display region and successively arranged along a direction away from a center of the display panel. Optionally, a size of each of the block structures is identical to a size of the light-transmitting structure. Optionally, the display panel further includes a first protrusion structure, wherein the first protrusion structure is within the hole in the first light-transmitting layer; and a portion, covering the first protrusion structure, of the first light-transmitting structure includes a second protrusion structure. Optionally, a width of the strip-shaped structure ranges from 50 microns to 500 microns. Optionally, the display panel further includes: a barrier dam disposed at an edge of the base substrate, wherein an orthographic projection of the target pattern on the base substrate is disposed on a side, proximal to a center of the display panel, of an orthographic projection of the barrier dam on the base substrate. Optionally, the display panel further includes: a barrier dam disposed at an edge of the base substrate, wherein the target pattern covers the barrier dam. Optionally, the light-transmitting structure is a color film layer; and the display panel further includes:a black matrix pattern disposed on the base substrate provided with the light-transmitting pattern, wherein the black matrix pattern includes a cutout region, and an orthographic projection of the first hole in the first light-transmitting layer on the base substrate is within an orthographic projection of the cutout region on the base substrate. Optionally, the first light-transmitting layer includes a first region covered by the first light-transmitting structure and a second region not covered by the first light-transmitting structure, wherein a thickness of a portion, within the first region, of the first light-transmitting layer is greater than a thickness of a portion, within the second region, of the first light-transmitting layer. According to another aspect of the embodiments of the present disclosure, a method for manufacturing a display panel is provided. The method is applicable to manufacturing the display panel as described above. The method is as defined in