CN210348142U

CN210348142U - Backlight module with through hole

Info

Publication number: CN210348142U
Application number: CN201921349799.XU
Authority: CN
Inventors: 张小齐; 曾晓虎; 田嘉明
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-04-17
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses an establish backlight unit of through-hole, include: light source subassembly, light guide plate, chase and optics diaphragm subassembly, optics diaphragm subassembly includes: the light guide plate comprises a diffusion film arranged above the light guide plate, a prism sheet arranged above the diffusion film and a reflector plate arranged below the light guide plate, wherein a plurality of through holes are formed in one side, away from the light source assembly, of the optical film assembly, the iron frame is bent at the inner side of each through hole to form an annular supporting column, and a non-light-transmitting layer is arranged at the inner side of each through hole of the brightness enhancement film. The utility model discloses a set up non-euphotic layer in the inboard of prism piece through-hole, prevent to follow the light entering prism piece of annular pillar reflection to prism piece to prevent the production of ray problem, make backlight unit's demonstration luminance more even, the picture quality is more perfect.

Description

Backlight module with through hole

Technical Field

The utility model relates to a liquid crystal module field especially relates to an establish backlight unit of through-hole.

Background

Due to the pursuit of higher screen ratio, research and development on the aspects of narrow frames and full screens are rapidly developed, mobile terminal products such as full-screen mobile phones and tablet computers begin to appear in the market, and a rapidly increasing trend is shown.

In the prior art, a plurality of through holes are usually arranged on the backlight module to accommodate components such as a camera and a receiver, so as to achieve the purpose of improving the screen occupation ratio. A circle of annular support is arranged around the through hole, light on the light guide plate is emitted to the annular support and reflected to the prism sheet, and rays are formed by light rays emitted to the prism sheet in the direction perpendicular to the prism structure on the brightness enhancement film, so that the problem of rays is solved, and the display effect of the backlight module is influenced.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing an establish backlight unit of through-hole, solve ray problem to improve the homogeneity of backlight unit luminance.

The technical scheme of the utility model as follows: a backlight module with through holes is provided, which comprises: light source subassembly, light guide plate, chase and optics diaphragm subassembly, optics diaphragm subassembly includes: the light source module comprises a diffusion film arranged above the light guide plate, a prism sheet arranged above the diffusion film and a reflector plate arranged below the light guide plate, wherein a plurality of through holes are formed in one side, away from the light source module, of the optical film assembly, the iron frame is bent in the through holes to form annular pillars, and non-light-transmitting layers are arranged on the inner side wall positions of the prism sheet through holes.

Furthermore, a circle of first shading glue is arranged around the through hole.

Further, the non-light-transmitting layer is a white light-reflecting substance, and the white light-reflecting substance is white ink or white glue and a covering film.

Furthermore, a second shading layer is arranged on the light-emitting surface of the prism sheet close to the through hole.

Further, the non-light-transmitting layer is a dark light-shading substance, and the dark light-shading substance is black ink or light-shading glue.

Further, the non-light-transmitting layer extends from the inner side wall, close to the through hole, of the prism sheet to the light-emitting surface of the prism sheet.

Further, a rubber frame is arranged around the annular support.

Further, black substances are arranged around the annular support column, the black substances are black ink or black laser substances, and the black substances are generated through pad printing, laser etching or spraying processes.

Furthermore, the gray ink is silk-screened on the light incident surface, which is close to the through hole and one side of the light source component, on the diffusion film.

Furthermore, dark ink is silk-printed on the light incident surface at one end, far away from the light source assembly, of the diffusion film.

Adopt above-mentioned scheme, the utility model discloses a set up non-euphotic layer in the inboard of prism piece through-hole, prevent to get into the prism piece from the light that annular pillar reflection to prism piece to prevent the production of ray problem, make backlight unit's display brightness more even, the picture quality is more perfect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view at a-a in fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B in fig. 2.

Fig. 4 is a schematic structural view of a black material disposed on a ring pillar.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, the present invention provides a backlight module with through holes, including: light source subassembly 10, light guide plate 21, chase 40 and optics diaphragm subassembly 20, optics diaphragm subassembly 20 includes: the light source module comprises a diffusion film 22 arranged above the light guide plate 21, a prism sheet 23 arranged above the diffusion film 22, and a reflector sheet 24 arranged below the light guide plate 21, wherein a plurality of through holes 30 are formed in one side, away from the light source module 10, of the optical film module 20, the iron frame 40 is bent at the inner side of each through hole to form an annular support column 41, and a non-light-transmitting layer 24 is arranged at the position, corresponding to the inner side of each through hole 30, of the prism sheet 23. The non-light-transmitting layer 24 is disposed inside the through holes 30 of the prism sheet 23 to prevent the light reflected from the ring-shaped pillars 41 to the prism sheet 23 from entering the prism sheet 23, thereby preventing the occurrence of ray problems and making the display brightness of the backlight module more uniform. A circle of first shading glue 25 is arranged around the through hole 30, and the first shading glue 25 can absorb light rays at the through hole 30 to prevent bright edges from being generated at the through hole 30.

As an alternative first embodiment, the non-light-transmitting layer 24 is a white light-reflecting substance, the white light-reflecting substance is white ink or white glue, a covering film, etc., and the white light-reflecting substance can reflect the light reflected from the annular pillars 41 to the through holes and be absorbed by the first light-shielding glue 25, so that the light does not enter the prism sheet 23. The prism sheet 23 is provided with a second light shielding layer 251 on the light exit surface near the through hole 30, and the second light shielding layer 251 can further prevent the generation of bright edges because of the bright edge problem around the through hole 30. By providing the second light-shielding layer 251, a problem of generation of a bright edge at the edge of the through-hole 30 is prevented.

As an alternative second embodiment, the non-light-transmitting layer 24 is a dark-color light-shielding substance, which is black ink, a light-shielding glue, or the like, and the dark-color light-shielding substance can absorb light reflected from the annular pillars 41 so as not to enter the prism sheet 23. The non-transparent layer 24 extends from the inner sidewall of the prism sheet close to the through hole 30 to the light-emitting surface of the prism sheet 23. The non-transparent layer 24 is extended to the light-emitting surface of the prism sheet 23 to replace the second light-shielding layer 251, so that the bright edge problem is prevented, the processing procedures are reduced, the installation process is simplified, and the production efficiency is improved.

Referring to fig. 4, a rubber frame 50 or a black material 51 is disposed around the ring-shaped pillar 41. The annular support 41 provides support for the glue frame 50. According to the different materials or colors of the rubber frame 50, the light reflecting or buffering function can be respectively realized. The black material 51 is black ink or a black laser material. The black material 51 is generated by pad printing, laser etching or spraying process. When black ink is selected, the black ink may be attached to the annular pillars 41 by a pad printing process or a spraying process; when a black laser material is selected, laser burning can be performed through a laser etching process, and the black laser material is attached to the ring-shaped support 41. The black substance 51 generated by the above process can effectively absorb the light emitted from the light guide plate 21, thereby solving the problems of ray, light leakage and the like, and enabling the display effect of the backlight module to be more uniform and the image quality to be more perfect.

The gray ink 26 is silk-screened on the light incident surface of the diffusion film 22 close to the through hole 30 and the side close to the light source assembly 10, the gray ink 26 can play a certain role in shading, and the gray ink 26 is basically invisible when entering the view area, so that a black edge cannot be caused on the screen. The light incident surface of the diffusion film at the end far away from the light source assembly 10 is silk-screened with dark ink. By screen printing the gray ink 26 and the dark ink, the occurrence of the bright edge problem can be prevented.

To sum up, the utility model discloses an inboard at the prism piece through-hole sets up non-euphotic layer, prevents to get into the prism piece from the light that annular pillar reflection to prism piece to prevent the production of ray problem, make backlight unit's display brightness more even, the picture quality is more perfect.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an establish backlight unit of through-hole which characterized in that includes: light source subassembly, light guide plate, chase and optics diaphragm subassembly, optics diaphragm subassembly includes: the light source module comprises a diffusion film arranged above the light guide plate, a prism sheet arranged above the diffusion film and a reflector plate arranged below the light guide plate, wherein a plurality of through holes are formed in one side, away from the light source module, of the optical film assembly, the iron frame is bent at the inner side of each through hole to form an annular supporting column, and a non-light-transmitting layer is arranged at the position of the inner side wall of each prism sheet through hole.

2. The backlight module with through holes as claimed in claim 1, wherein a ring of the first light-shielding glue is disposed around the through holes.

3. The backlight module with through holes as claimed in claim 2, wherein the non-transparent layer is a white reflective material, and the white reflective material is white ink or white glue and a cover film.

4. The backlight module as claimed in claim 3, wherein the prism sheet has a second light shielding layer disposed on the light emergent surface thereof.

5. The backlight module with through holes as claimed in claim 1, wherein the non-transparent layer is a dark color light-shielding material, and the dark color light-shielding material is black ink or light-shielding glue.

6. The backlight module as claimed in claim 5, wherein the non-transparent layer extends from an inner sidewall of the prism sheet adjacent to the through hole to the light exit surface of the prism sheet.

7. The backlight module with through holes as claimed in claim 1, wherein a rubber frame is disposed around the ring-shaped support.

8. The backlight module with through holes as claimed in claim 1, wherein a black material is disposed around the ring-shaped support, the black material is black ink or black laser material, and the black material is formed by pad printing, laser etching or spraying.

9. The backlight module with through holes as claimed in claim 1, wherein the light incident surface of the diffusion film near the through holes and near the light source module is screen printed with gray ink.

10. The backlight module with through holes as claimed in claim 1, wherein the light incident surface of the diffusion film at the end away from the light source module is silk-printed with dark ink.