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CN-121978858-A - Light source assembly, backlight module, display module and display device

CN121978858ACN 121978858 ACN121978858 ACN 121978858ACN-121978858-A

Abstract

The disclosure discloses a light source assembly, a backlight module, a display module and a display device. The light source assembly comprises a first driving plate and a light emitting assembly which is arranged on one side surface of the driving plate and is electrically connected with the driving plate and extends along a first direction, wherein the driving plate comprises a first substrate layer, a conductive layer connected with the light emitting assembly and a signal leading-out part electrically connected with the conductive layer, the signal leading-out part extends along a second direction perpendicular to the first direction, the light emitting assembly comprises a plurality of light emitting devices which are arranged along the first direction, the light source assembly further comprises a first bonding layer, the first bonding layer comprises a first edge part and a second edge part which extend along the first direction, the first edge part is far away from the signal leading-out part than the second edge part, the first bonding layer is provided with a first opening at the position of each light emitting device, the first opening comprises a first boundary and a second boundary which extend along the first direction, the first boundary is far away from the signal leading-out part than the second boundary, and the second boundary comprises a convex part far away from the first boundary direction.

Inventors

  • WANG YAODONG
  • LI BAOMAN
  • DING HONGXUE
  • ZHANG LUO
  • ZHENG YANGLI
  • ZHANG XIAOPING
  • LIU FANGYI
  • GAO XIAOJUAN
  • MA XIAO
  • WANG ZHIYUAN

Assignees

  • 京东方科技集团股份有限公司
  • 北京京东方显示技术有限公司

Dates

Publication Date
20260505
Application Date
20251031
Priority Date
20241031

Claims (20)

  1. 1. The light source assembly comprises a first driving plate and a light emitting assembly which is arranged on one side surface of the first driving plate and is electrically connected with the first driving plate and extends along a first direction, wherein the first driving plate comprises a first substrate layer with a first surface and a second surface, a conductive layer which is arranged on one side of the second surface and is connected with the light emitting assembly, and a signal extraction part which is electrically connected with the conductive layer, the signal extraction part extends in a second direction perpendicular to the first direction, the light emitting assembly is arranged on one side of the first surface and comprises a plurality of light emitting devices which are arranged along the first direction, the light source assembly further comprises a first adhesive layer which is arranged on one side of the first surface and comprises a first edge part and a second edge part which extend along the first direction, the first edge part is far away from the signal extraction part, the first adhesive layer is provided with a first opening at the position of each light emitting device, the first opening is projected on the front surface of the first surface and comprises a first projection part which is far away from the first edge part along the first direction, and the first projection part extends far away from the first edge part along the first direction.
  2. 2. The light source assembly of claim 1, wherein the closer to an edge position of the light emitting device in the first direction, the smaller the distance between a boundary of the light emitting device and the second boundary, the second boundary and the second edge having a space therebetween.
  3. 3. The light source assembly according to claim 2, wherein both end portions of the convex portion of the second boundary form a first fracture, a length of the first fracture in a first direction is equal to or less than a length of the light emitting device in the first direction, the first opening further includes a third boundary and a fourth boundary which are perpendicular to the first boundary and are disposed opposite to each other, a distance between the third boundary and the fourth boundary is greater than the length of the light emitting device in the first direction, and a length of the third boundary or the fourth boundary is greater than the length of the light emitting device in the second direction.
  4. 4. The light source assembly according to claim 2, wherein the first adhesive layer is provided with a second opening at a position of the second side portion corresponding to each of the light emitting devices, the second opening including a convex portion adjacent to the first side portion direction, a distance between an opening center line of the second opening parallel to the second direction and a light emitting device center line of the light emitting device parallel to the second direction being 1/10 or less of a length of the light emitting device in the first direction.
  5. 5. The light source assembly according to claim 4, wherein both ends of the convex portion of the second boundary form a first fracture, a length of the first fracture in the first direction is equal to or less than a length of the light emitting device in the first direction, and both ends of the convex portion of the second opening at a position corresponding to the second side form a second fracture, a length of the second fracture in the first direction is equal to or less than a length of the first fracture in the first direction.
  6. 6. The light source assembly of claim 5, wherein the second opening extends to the first opening and communicates with the first opening, wherein the second opening communicates with the first opening to form a first opening interface and a second opening interface, respectively, and wherein a spacing of the first opening interface and the second opening interface in the first direction is less than a length of the first fracture in the first direction.
  7. 7. The light source assembly of claim 6, wherein the light emitting device comprises a first light emitting device face attached to the first surface, a second light emitting device face opposite to the first light emitting device face, a light emitting device light emitting face perpendicular to the first light emitting device face, and a light emitting device non-light emitting face opposite to the light emitting device light emitting face, wherein a light emitting focal point is formed between the light emitting device non-light emitting face and a light emitting device center line of the light emitting device parallel to the second direction, wherein an included angle formed by the first opening interface and the light emitting focal point is less than or equal to 45 degrees, and wherein an included angle formed by the second opening interface and the light emitting focal point is less than or equal to 45 degrees.
  8. 8. The light source assembly according to any one of claims 1-7, wherein the first adhesive layer comprises a first substrate layer, a first adhesive layer, a second adhesive layer and a third adhesive layer, wherein the first substrate layer comprises a third surface and a fourth surface which are oppositely arranged, and the third surface is closer to the first surface than the fourth surface; at least a third surface of the first substrate layer is white, and at least a fourth surface of the first substrate layer is white; the first substrate layer is a white substrate, and/or the first bonding layer further comprises a first reflection enhancing layer arranged between the third surface and the first glue layer.
  9. 9. The light source assembly according to any one of claims 1-7, wherein the first substrate layer is a transparent substrate, the first substrate layer comprises a first silk-screen layer positioned between the first glue layer and the third surface, and a second silk-screen layer positioned between the second glue layer and the fourth surface, and the first silk-screen layer and the second silk-screen layer are made of silk-screen white oil.
  10. 10. The light source assembly of claim 9, wherein the first adhesive layer further comprises a second antireflective layer disposed between a first silk-screen layer and the first glue layer.
  11. 11. The light source assembly according to any one of claims 1-7, wherein the first adhesive layer comprises a first substrate layer, a first adhesive layer, a second adhesive layer and a third adhesive layer, wherein the first substrate layer comprises a third surface and a fourth surface which are oppositely arranged, and the third surface is closer to the first surface than the fourth surface; the first substrate layer comprises a plurality of substrate sub-layers which are arranged in a laminated way, wherein the refractive indexes of any two adjacent substrate sub-layers are different; The second glue layer comprises a glue base material and heat conducting particles.
  12. 12. The light source assembly of claim 11, wherein the thermally conductive particulate material is aluminum nitride; The mass percentage of the heat conduction particles is more than or equal to 30% and less than or equal to 60%, and the particle size of the heat conduction particles is more than or equal to 0.1 micron and less than or equal to 13 microns.
  13. 13. The light source assembly according to any one of claims 1-7, 10 and 12, wherein the first driving plate further comprises a coating layer, the coating layer is located between the first surface and the lamp group close to the first surface, and between the first surface and the first bonding layer close to the first surface, and an orthographic projection of the coating layer on the first substrate layer covers the first substrate layer, and/or the coating layer is light blue in color, has a wavelength range of 475-520 nm, or is white in color.
  14. 14. The light source assembly according to any one of claims 1-7, 10, 12, wherein the light source assembly further comprises a fluorescent layer on a light emitting device face of the light emitting device; at least part of the fluorescent layers corresponding to the light-emitting devices comprise red fluorescent powder or green fluorescent powder, and/or at least part of the fluorescent layers corresponding to the light-emitting devices comprise yellow fluorescent powder; The mass percentage of the red fluorescent powder in the fluorescent layer is more than or equal to 14% and less than or equal to 20%; the mass percentage of the green fluorescent powder in the fluorescent layer is more than or equal to 17% and less than or equal to 25%; The mass percentage of the yellow fluorescent powder in the fluorescent layer is more than or equal to 18% and less than or equal to 20%.
  15. 15. The backlight module comprises a back plate with a groove, a reflecting sheet arranged on the bottom wall, a light guide plate arranged on the reflecting sheet, a scattering film arranged on the light guide plate, and a light source assembly according to any one of claims 1-14, wherein a first bonding layer on one side of the light source assembly, which is far away from the signal extraction part, is fixed with the surface of the light guide plate, which is far away from the reflecting sheet, and a first bonding layer on one side of the light source assembly, which is close to the signal extraction part, is fixed with the side wall of the back plate, and the light emitting device light emitting surface of the light emitting device is bonded with the side wall surface of the light guide plate, which is perpendicular to the side wall.
  16. 16. The backlight module according to claim 15, wherein the light guide plate comprises a fifth surface near the back plate side and a sixth surface far from the back plate side; The light guide plate is divided into a first area corresponding to the display area and a second area positioned between the first area and the light emitting component; the fifth surface is provided with a dot structure in the first area, wherein the dot structure comprises a plurality of dots; the closer the dots in at least part of the dot structure are to the light emitting component, the smaller the orthographic projection area of the dots in the bottom wall is, and/or the smaller the dot depth of the dots in at least part of the dot structure is, the closer the dots in the light emitting component are.
  17. 17. The backlight module according to claim 16, wherein the dot structure comprises a first dot region, a second dot region and a third dot region arranged from the light source assembly toward the light guide plate, wherein a diameter and a depth of the first dot region are smaller than a diameter and a depth of the second dot region, and a diameter and a depth of the second dot region are smaller than a diameter and a depth of the third dot region.
  18. 18. The backlight module according to claim 16, wherein in the second direction, the length of the light guide plate is L, the distance from the dot to the edge of the light guide plate near the light emitting component is x, and the diameter d (x) of at least part of the dots satisfies: When 0< x is less than or equal to 1/3L, d (x) =23+4/11 x; When 1/3L < x≤2/3L, d (x) =43+1/11 (x-1/3L); when 2/3L < x≤L, d (x) =48+2/11 (x-2/3L).
  19. 19. The backlight module as claimed in claim 16, wherein in the second direction, the length of the light guide plate is L, the distance from the dots to the edge of the light guide plate near the light emitting component is x, and the depth H (x) of at least part of the dots satisfies: When 0< x is less than or equal to 1/3L, d (x) =1.0+4.2x/L; When 1/3L < x≤2/3L, d (x) =1.7+7.8 (x-L/3)/L; When 2/3L < x≤L, d (x) =1.0+12.0 (x-2L/3)/L.
  20. 20. The backlight module according to any one of claims 15-19, wherein a scattering structure is arranged on the sixth surface and in the first region, the scattering structure being a plurality of tooth-shaped protrusions from the fifth surface to the sixth surface, the plurality of tooth-shaped protrusions being arranged in an array along a first direction, each tooth-shaped protrusion extending along a second direction; And a first compensation lattice point is arranged on one side of the scattering structure, which is far away from the fifth surface, and the first compensation lattice point is distributed in a display area corresponding to the brightness of the light guide plate, which is smaller than the preset brightness.

Description

Light source assembly, backlight module, display module and display device Cross Reference to Related Applications The present disclosure claims priority from chinese patent application entitled "a light source module, backlight module, display module, and display device" filed on day 31 of 10 months 2024 by the national intellectual property agency of the people's republic of China, application number 202411547977.5, the entire contents of which are incorporated herein by reference. Technical Field The disclosure relates to the technical field of display, in particular to a light source assembly, a backlight module, a display module and a display device. Background The brightness of the related art OLED (organic light emitting diode) display module has reached more than 1000 nit (nit), the local instantaneous brightness peak value even reaches 2000nit, and the lcd (liquid crystal) display module needs to continuously increase the product brightness specification to reduce the brightness gap between the product and the OLED display product. Disclosure of Invention The embodiment of the disclosure provides a light source assembly, a backlight module, a display module and a display device, which are used for solving at least one of the problems existing in the prior art. The light source assembly comprises a first driving plate and a light emitting assembly, wherein the light emitting assembly is arranged on one side surface of the first driving plate and is electrically connected with the first driving plate and extends along a first direction, the first driving plate comprises a first substrate layer with a first surface and a second surface, a conducting layer is arranged on one side of the second surface and is connected with the light emitting assembly, a signal extraction part is electrically connected with the conducting layer and extends in a second direction perpendicular to the first direction, the light emitting assembly is arranged on one side of the first surface and comprises a plurality of light emitting devices which are arranged along the first direction, the light source assembly further comprises a first bonding layer arranged on one side of the first surface, the first bonding layer comprises a first edge and a second edge which extend along the first direction, the first edge is far away from the signal extraction part than the second edge, the first bonding layer is provided with a first opening at the position of each light emitting device, the front projection of the first opening on the first surface covers the front projection of the light emitting device on the first surface, the first opening comprises a first boundary and a second boundary which extend along the first direction, the first boundary and the second boundary is far away from the first boundary, and the first boundary is far from the first boundary. In an alternative embodiment, the closer to the edge position of the light emitting device in the first direction, the smaller the distance between the boundary of the light emitting device and the second boundary, the second boundary and the second edge portion have a space therebetween. In an alternative embodiment, the two ends of the convex portion of the second boundary form a first fracture, the length of the first fracture in the first direction is smaller than or equal to the length of the light emitting device in the first direction, the first opening further comprises a third boundary and a fourth boundary which are perpendicular to the first boundary and are oppositely arranged, the distance between the third boundary and the fourth boundary is larger than the length of the light emitting device in the first direction, and the length of the third boundary or the fourth boundary in the second direction is larger than the length of the light emitting device in the second direction. In an alternative embodiment, the first adhesive layer is provided with a second opening at a position of the second side portion corresponding to each light emitting device, the second opening comprises a convex portion close to the first side portion direction, and the distance between the center line of the opening of the second opening parallel to the second direction and the center line of the light emitting device parallel to the second direction is less than or equal to 1/10 of the length of the light emitting device in the first direction. In an alternative embodiment, the two ends of the convex portion of the second boundary form a first fracture, the length of the first fracture in the first direction is less than or equal to the length of the light emitting device in the first direction, and the two ends of the convex portion of the second opening, which correspond to the second edge position, form a second fracture, the length of the second fracture in the first direction is less than or equal to the length of the first fracture in the first direction. In an alternative embod