CN-224232075-U - Backlight module and display device

Abstract

The application provides a backlight module and a display device, wherein the backlight module comprises a back plate; the LED lamp comprises a back plate, a lamp panel, a reflecting piece, a positioning piece and a positioning piece, wherein the lamp panel is arranged on the back plate, the reflecting piece is arranged on the lamp panel, a positioning hole is formed in the reflecting piece, the positioning piece comprises a base and a positioning column, the base is fixed on the back plate or the lamp panel, the positioning column is detachably connected to the base, and the positioning column penetrates through the positioning hole of the reflecting piece to limit the assembly position of the reflecting piece. The positioning piece in the backlight module can give consideration to the accurate positioning of the reflecting piece and the display quality of the display device.

Inventors

• WANG HAO
• CAI QIFENG
• DONG XIAOXU
• LIU JINLONG

Assignees

• 惠州视维新技术有限公司

Dates

Publication Date

20260512

Application Date

20250509

Claims (10)

1. 1. A backlight module, comprising: A back plate; the lamp panel is arranged on the backboard; The reflecting piece is arranged on the lamp panel and is provided with a positioning hole; The locating piece comprises a base and a locating column, the base is fixed on the back plate or the lamp panel, the locating column is detachably connected to the base, and the locating column penetrates through the locating hole of the reflecting piece to limit the assembling position of the reflecting piece.
2. 2. A backlight module according to claim 1, wherein the base is provided with a threaded hole, one end of the positioning column is provided with an external thread, and the positioning column is in threaded fit connection with the threaded hole through the external thread.
3. 3. The backlight module according to claim 1, wherein the base is provided with a limiting groove, one end of the positioning column is provided with a clamping part matched with the limiting groove, and the clamping part is embedded into the limiting groove to form plug-in connection.
4. 4. A backlight module according to claim 3, wherein the limit groove is a cross groove, and a protruding structure is arranged on the periphery of the clamping portion, and the protruding structure is matched with the cross groove.
5. 5. The backlight module of claim 1, wherein the base and the positioning posts are integrally formed by a predetermined breaking area configured to break upon lateral force to effect separation of the base and the positioning posts.
6. 6. A backlight module according to any one of claims 1 to 5, wherein the reflecting member is formed by arranging a plurality of lamp cup units in an array, each lamp cup unit has a reflecting cavity, adjacent lamp cup units are connected to form a connecting ridge, and the positioning hole is formed in the connecting ridge.
7. 7. The backlight module according to claim 6, wherein the reflecting member further has a protrusion part having a hollow structure, the protrusion part is disposed on the connection ridge line, the protrusion part is disposed on a side of the reflecting member having the reflecting cavity, and the positioning hole is disposed on the protrusion part.
8. 8. The backlight module according to claim 7, wherein a guiding inclined plane is provided on an inner wall of the protruding portion, and an end of the positioning column away from the base is a tapered end, and the tapered end is matched with the guiding inclined plane.
9. 9. A backlight module according to any one of claims 1 to 5, wherein at least two of the positioning holes are provided, and the two positioning holes are spaced apart.
10. 10. A display device, comprising: A back panel module, the backlight module being the backlight module according to any one of claims 1 to 9; The display panel is arranged on the light emitting side of the backlight module.

Description

Backlight module and display device Technical Field The present utility model relates to the field of display technologies, and in particular, to a backlight module and a display device. Background In the development of optical systems of display devices, the positioning and assembly technology of reflecting elements is a key to influence the optical performance and control cost, and has been the focus of industry. The three-dimensional reflecting piece becomes a research hot spot in the optical technical field due to unique materials and well-designed three-dimensional modeling. In practical application, it can high-efficient reflection lamp pearl light, accurate regulation and control light propagation path optimizes light distribution uniformity, promotes TV picture luminance level and color accuracy that restores by a wide margin. Meanwhile, the three-dimensional structure can support the diaphragm or the diffusion plate, can replace a traditional lamp supporting structure, reduces the number of optical system parts and reduces the overall manufacturing cost. However, positioning and assembly present challenges when the three-dimensional reflector replaces a conventional lamp support. Because of its complex three-dimensional shape, conventional simple mechanical contact is difficult to accurately position. If the jig is used for positioning, the jig may jack up the membrane or the diffusion plate. The flatness of the membrane is critical to the picture display effect, and the jacking can change the light path, so that the problems of bright spots, dark areas, color cast, image distortion and the like are caused. Therefore, how to combine the precise positioning of the reflecting member with the guarantee of the display quality becomes a key problem to be solved currently. Disclosure of utility model The embodiment of the application provides a backlight module and a display device, wherein a positioning piece in the backlight module can give consideration to the accurate positioning of a reflecting piece and the display quality of the display device. The embodiment of the application provides a backlight module, which comprises: A back plate; the lamp panel is arranged on the backboard; The reflecting piece is arranged on the lamp panel and is provided with a positioning hole; The locating piece comprises a base and a locating column, the base is fixed on the back plate or the lamp panel, the locating column is detachably connected to the base, and the locating column penetrates through the locating hole of the reflecting piece to limit the assembling position of the reflecting piece. In some embodiments, the base is provided with a threaded hole, one end of the positioning column is provided with external threads, and the positioning column is in threaded fit connection with the threaded hole through the external threads. In some embodiments, the base is provided with a limiting groove, one end of the positioning column is provided with a clamping part matched with the limiting groove, and the clamping part is embedded into the limiting groove to form plug-in connection. In some embodiments, the limit groove is a cross groove, and a protruding structure is arranged on the periphery of the clamping portion, and the protruding structure is matched with the cross groove. In some embodiments, the base and the positioning column are integrally formed by a preset fracture zone configured to fracture upon lateral force to effect separation of the base and the positioning column. In some embodiments, the reflecting member is formed by arranging a plurality of lamp cup units in an array, each lamp cup unit is provided with a reflecting cavity, adjacent lamp cup units are connected to form a connecting ridge, and the positioning hole is formed in the connecting ridge. In some embodiments, the reflecting member further has a protrusion part having a hollow structure, the protrusion part is disposed on the connection ridge line, the protrusion part is disposed on a side of the reflecting member having the reflecting cavity, and the positioning hole is disposed on the protrusion part. In some embodiments, a guiding inclined plane is provided on the inner wall of the protruding portion, one end of the positioning column away from the base is a conical end, and the conical end is matched with the guiding inclined plane. In some embodiments, the number of the positioning holes is at least two, and the two positioning holes are spaced. The embodiment of the application also provides a display device, which comprises: the backlight module is provided with a back plate module; The display panel is arranged on the light emitting side of the backlight module. In the backlight module and the display device provided by the embodiment of the application, the backlight module comprises a back plate, a lamp panel, a reflecting piece and a positioning piece, wherein the reflecting piece is arranged on the lamp panel, and the ref