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CN-116909050-B - Display device

CN116909050BCN 116909050 BCN116909050 BCN 116909050BCN-116909050-B

Abstract

The utility model discloses a display device, including backlight unit, LCD panel and front bezel, LCD panel includes the light-emitting surface, the backlight unit range upon range of set up in LCD panel is kept away from one side of light-emitting surface, the backlight unit includes the first side center that is located the display device drive side, the front bezel includes the first front bezel lateral wall that is located the drive side, first front bezel lateral wall with first side center pass through fixed part fixed connection, display device still includes the flexible circuit board that is located the drive side, at least part of flexible circuit board is located between first side center and the first front bezel lateral wall, first front bezel lateral wall includes the opening, the opening is in the thickness direction of LCD panel compares the fixed part is closer to the light-emitting surface, and, the orthographic projection of opening on the light-emitting surface does not exist with the orthographic projection of fixed part on the light-emitting surface extension.

Inventors

  • WANG BEIBEI
  • SHI HAIJUN
  • SUN JIXING
  • HAN TIANYANG

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
20260512
Application Date
20230731

Claims (19)

  1. 1. The display device comprises a backlight module, a liquid crystal display panel and a front frame, wherein the liquid crystal display panel comprises a light emitting surface, and the backlight module is arranged on one side, far away from the light emitting surface, of the liquid crystal display panel in a stacked mode; the display device further comprises a flexible circuit board positioned on the driving side, wherein at least part of the flexible circuit board is positioned between the first side middle frame and the first front frame side wall; The first front frame side wall comprises an opening part, wherein the opening part is closer to the light-emitting surface extending surface than the fixing part in the thickness direction of the liquid crystal display panel, and the orthographic projection of the opening part on the light-emitting surface is not overlapped with the orthographic projection of the fixing part on the light-emitting surface extending surface; The flexible circuit board comprises a first connecting part, a second connecting part and a bending part which are connected, wherein the first connecting part is a part which is electrically connected with the liquid crystal display panel on the flexible circuit board, the second connecting part is a part which is positioned between the first side middle frame and the first front frame side wall and extends along the first front frame side wall to the side far away from the light-emitting surface, and the bending part is respectively connected with the first connecting part and the second connecting part; The liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged in a stacked mode, the liquid crystal layer is arranged between the first substrate and the second substrate, the light-emitting surface is located on one side, away from the second substrate, of the first substrate, the second substrate protrudes out of the first substrate on the driving side to form a protruding portion, a binding area is arranged on one side, facing the light-emitting surface, of the protruding portion, the flexible circuit board is electrically connected with the binding area, and is bent between the first side middle frame and the first front frame side wall and extends to the side away from the light-emitting surface along the first front frame side wall, the distance from the protruding portion to the light-emitting surface extending surface, facing one side surface of the light-emitting surface, is larger than the distance from the light-emitting surface extending surface, on the opening portion, and the distance from the protruding portion to the light-emitting surface facing one side surface of the light-emitting surface is smaller than the distance from the opening portion to the light-emitting surface extending surface.
  2. 2. The display device according to claim 1, wherein an orthographic projection on a reference surface of the flexible circuit board overlaps an orthographic projection of the opening portion on the reference surface, the reference surface being a plane parallel to the first front frame side wall.
  3. 3. The display device according to claim 1, wherein the orthographic projection of the upper edge of the opening portion on the reference surface and the orthographic projection of the lower edge of the opening portion on the reference surface are respectively located on opposite sides of the orthographic projection of the side surface of the projection portion facing the light-emitting-surface extending surface on the reference surface, and the reference surface is a plane parallel to the first front-frame side wall.
  4. 4. A display device according to any one of claims 1 to 3, wherein the opening upper edge and the opening lower edge are located on the same side of the light-emitting-surface extending surface.
  5. 5. A display device according to any one of claims 1 to 3, wherein a distance from a surface of the second substrate on a side away from the light-emitting surface to the light-emitting surface extension surface is smaller than a distance from the opening lower edge to the light-emitting surface extension surface.
  6. 6. The display device according to claim 1, wherein the number of the opening portions is plural, and orthographic projections of at least one of the fixing portions on the light-emitting-surface extending surface are located between orthographic projections of two adjacent opening portions on the light-emitting-surface extending surface.
  7. 7. The display device according to claim 6, wherein the openings on both sides of the same fixed portion are mirror-symmetrical.
  8. 8. The display device according to claim 1, wherein the flexible circuit board includes a first edge and a second edge arranged side by side in a width direction thereof; The front projection of the first edge on the reference plane is parallel to a part of the front projection of the second edge on the reference plane, and the part of the front projection of the second edge on the reference plane is positioned in the front projection range of the opening part on the reference plane, and the reference plane is a plane parallel to the side wall of the first front frame.
  9. 9. The display device of claim 8, wherein the orthographic projections of the first edge and the second edge of the same flexible circuit board on the reference plane overlap with the orthographic projections of the same opening on the reference plane, or Orthographic projections of a first edge and a second edge of the same flexible circuit board on the reference plane overlap orthographic projections of different opening portions on the reference plane respectively.
  10. 10. The display device according to claim 8, wherein at least one end of the opening portion exceeds the flexible circuit board in a length direction of the opening portion, and a length of the excess portion is greater than or equal to 2mm.
  11. 11. The display device according to claim 1, wherein a distance from an upper edge of the opening to a top end of the first front frame side wall is 1mm to 1.5mm, and the top end of the first front frame side wall is an end of the first front frame side wall near the upper edge of the opening.
  12. 12. The display device according to claim 1, wherein a dimension of the opening portion in a thickness direction of the liquid crystal display panel is between 1.5mm and 2mm.
  13. 13. The display device according to any one of claims 1 to 3, 6 to 12, wherein the opening portion includes a through hole penetrating through a side wall of the first front frame; Or the opening part comprises a plurality of slits penetrating through the side wall of the first front frame, and the slits are arranged along the thickness direction of the liquid crystal display panel; Or the opening part comprises a plurality of grooves arranged on one side of the side wall of the first front frame facing the first side middle frame and/or one side far away from the first side middle frame, wherein the depth of the grooves is smaller than the thickness of the side wall of the first front frame, and the grooves on the same side are arranged along the thickness direction of the backlight module.
  14. 14. The display device according to claim 13, wherein the opening portion includes a plurality of grooves provided on a side of the first front frame side wall facing the first side middle frame and a side remote from the first side middle frame, the grooves on both sides of the first front frame side wall being staggered in a thickness direction of the backlight unit.
  15. 15. The display device according to claim 13, wherein the opening portion includes a plurality of grooves, a depth of the grooves is less than or equal to 70% of a thickness of the first front frame side wall, and a distance between two adjacent grooves located on the same side as the first front frame side wall is greater than or equal to twice a width of the grooves.
  16. 16. A display device according to any one of claims 1 to 3, 6 to 12, wherein a plurality of the flexible circuit boards are provided at each of the driving sides, and the fixing portions are provided at both sides of each of the flexible circuit boards in the width direction thereof.
  17. 17. The display device according to any one of claims 1 to 3, 6 to 12, wherein the backlight module further comprises a back plate, the back plate comprises a back plate side wall and a back plate bottom wall which are connected, the first side middle frame is provided with an insertion slot, the insertion slot is provided with an opening facing to a plane of the bottom wall, and a part of the back plate side wall away from the back plate bottom wall is inserted into the insertion slot through the opening; The first side middle frame comprises a first sub middle frame positioned between the back plate side wall and the first front frame side wall, and the first front frame side wall is connected with the first sub middle frame and the back plate side wall through the fixing part.
  18. 18. The display device of claim 17, wherein the backlight module further comprises an optical film set, the first side middle frame supports the optical film set, and the liquid crystal display panel is located on a side of the optical film set away from the bottom wall of the back plate; and the backlight source is positioned between the bottom wall of the backboard and the optical film group.
  19. 19. The display device of any one of claims 1 to 3,6 to 12, wherein the backlight module further comprises a back plate, the front frame further comprises second front frame side walls on a non-driving side of the display device, each second front frame side wall being connected to each first front frame side wall and surrounding the back plate; the top end of the first front frame side wall and the top end of the second front frame side wall are bent to form a bending part which at least partially covers the non-display area of the liquid crystal display panel.

Description

Display device Technical Field The disclosure relates to the technical field of display, in particular to a display device. Background The liquid crystal display device comprises a liquid crystal display panel, a backlight module and a front frame, wherein the liquid crystal display panel is fixed on the light emitting side of the backlight module, the backlight module is used for providing a light source for the liquid crystal display panel, and the front frame is fixedly connected with the backlight module, so that the whole display device can be fixed and protected. Disclosure of Invention The display device comprises a backlight module, a liquid crystal display panel and a front frame, wherein the liquid crystal display panel comprises a light emitting surface, and the backlight module is arranged on one side, far away from the light emitting surface, of the liquid crystal display panel in a stacked mode; the display device further comprises a flexible circuit board positioned on the driving side, wherein at least part of the flexible circuit board is positioned between the first side middle frame and the first front frame side wall; The first front frame side wall comprises an opening part, the opening part is closer to the light-emitting surface extending surface than the fixing part in the thickness direction of the liquid crystal display panel, and the orthographic projection of the opening part on the light-emitting surface is not overlapped with the orthographic projection of the fixing part on the light-emitting surface extending surface. In some embodiments, the orthographic projection on the reference surface of the flexible circuit board overlaps with the orthographic projection of the opening on the reference surface, and the reference surface is a plane parallel to the side wall of the first front frame. In some embodiments, the flexible circuit board includes a first connection portion, a second connection portion and a bending portion, where the first connection portion is a portion of the flexible circuit board electrically connected to the liquid crystal display panel, the second connection portion is a portion located between the first side middle frame and the first front frame side wall and extending along the first front frame side wall toward a side far from the light-emitting surface, and the bending portion is connected to the first connection portion and the second connection portion respectively; the opening part comprises an opening part upper edge and an opening part lower edge, wherein the opening part upper edge is closer to the light-emitting surface than the opening part lower edge, the distance from the opening part upper edge to the light-emitting surface extending surface is smaller than the distance from the bending part to the light-emitting surface extending surface, and the distance from the opening part lower edge to the light-emitting surface extending surface is larger than the distance from the bending part to the light-emitting surface extending surface. In some embodiments, the liquid crystal display panel includes a first substrate and a second substrate that are stacked, and a liquid crystal layer between the first substrate and the second substrate, the light-emitting surface being located on a side of the first substrate away from the second substrate; the second substrate protrudes from the first substrate at the driving side to form a protruding part, a binding area is arranged at one side of the protruding part facing the light-emitting surface, the flexible circuit board is electrically connected with the binding area, and is bent between the first side middle frame and the first front frame side wall and extends along the first front frame side wall to the side far away from the light-emitting surface; The opening comprises an opening upper edge and an opening lower edge, the opening upper edge is closer to the light-emitting surface extending surface than the opening lower edge, wherein the distance from one side surface of the protruding portion towards the light-emitting surface extending surface to the light-emitting surface extending surface is larger than the distance from the opening upper edge to the light-emitting surface extending surface, and the distance from one side surface of the protruding portion towards the light-emitting surface to the light-emitting surface is smaller than the distance from the opening lower edge to the light-emitting surface extending surface. In some embodiments, the liquid crystal display panel includes a first substrate and a second substrate that are stacked, and a liquid crystal layer between the first substrate and the second substrate, the light-emitting surface being located on a side of the first substrate away from the second substrate; the second substrate protrudes from the first substrate at the driving side to form a protruding part, a binding area is arranged at one side of the protruding part facin