CN209946595U - Backlight module, display screen and mobile phone - Google Patents
Backlight module, display screen and mobile phone Download PDFInfo
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- CN209946595U CN209946595U CN201920657257.2U CN201920657257U CN209946595U CN 209946595 U CN209946595 U CN 209946595U CN 201920657257 U CN201920657257 U CN 201920657257U CN 209946595 U CN209946595 U CN 209946595U
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Abstract
The utility model relates to a backlight unit technical field discloses a backlight unit, display screen and cell-phone. The backlight module comprises a light guide plate and a frame, wherein the frame is provided with a boss, the light guide plate is provided with a light guide plate hole, and the light guide plate is sleeved on the boss through the light guide plate hole; the direction that the distance of the pore wall in the light guide plate hole is nearest to the edge of the light guide plate is the first direction, and the distance between the pore wall in the light guide plate hole and the protruding part in the first direction is larger than the distance between the pore wall in the light guide plate hole and the protruding part in the direction other than the first direction. The display screen comprises the backlight module, and the liquid crystal display screen is fixed at the top of the backlight module. The mobile phone comprises the display screen. The utility model discloses in through the improvement to light guide plate hole shape among the backlight unit, make the light guide plate be difficult for dragging the frame when cold and hot impact experiment, reduce the cracked risk of light guide plate.
Description
Technical Field
The utility model relates to a backlight unit technical field especially relates to a backlight unit, display screen and cell-phone.
Background
With the rapid development of full-screen mobile phones, the high screen ratio has become a major development direction for various current large mobile phone manufacturers. Due to the existence of elements such as a camera at the top of the mobile phone, the width of a frame of a mobile phone screen is reduced to the limit, and the width of a head cannot be reduced continuously. In order to further improve the screen ratio, mobile phone manufacturers set holes on the backlight module, and place the cameras in the holes of the backlight module. Through above-mentioned design, can hide the camera in backlight unit, reduce head frame width, make the screen account for than promoting by a wide margin, but also brought new problem thereupon. The light guide plate is usually sleeved on the raised part of the frame through the hole arranged on the light guide plate, and when the whole machine is subjected to a cold and heat shock experiment after production is finished, the light guide plate can pull the frame due to thermal expansion and cold contraction, so that the light guide plate is easy to break.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a backlight module, display screen and cell-phone through the improvement to backlight module well light guide plate hole shape, makes the light guide plate be difficult for dragging the frame when cold and hot impact experiment, reduces the cracked risk of light guide plate.
The utility model provides a technical scheme that its technical problem adopted is:
the light guide plate comprises a light guide plate and a frame, wherein a protruding part is arranged on the frame, a light guide plate hole is formed in the light guide plate, and the light guide plate is sleeved on the protruding part through the light guide plate hole; the direction that the distance between the hole wall of the light guide plate hole and the edge of the light guide plate is the closest is a first direction, and the distance between the hole wall of the light guide plate hole and the protruding part in the first direction is larger than the distance between the hole wall of the light guide plate hole and the protruding part in the direction other than the first direction.
As an improvement of the above technical solution, the light guide plate includes a first edge, a second edge, and a transition edge, the first edge is connected to the second edge through the transition edge, a distance between the light guide plate hole and the transition edge is smaller than a distance between the light guide plate hole and an edge other than the transition edge, and a distance between the hole wall of the light guide plate hole and the protrusion in a direction toward the transition edge is larger than a distance between the hole wall of the light guide plate hole and the protrusion in a direction other than the transition edge.
As an improvement of the above technical solution, the light guide plate includes a first edge, a second edge, a third edge and a fourth edge, the first edge and the third edge are parallel and are disposed opposite to each other, the second edge and the fourth edge are parallel and are disposed opposite to each other, the first edge extends along the width direction of the light guide plate, the first edge is connected to the second edge, a distance between the light guide plate hole and the first edge is smaller than a distance between the light guide plate hole and the third edge, and a distance between the hole wall of the light guide plate hole and the protruding portion in the direction toward the first edge is larger than a distance between the hole wall of the light guide plate hole and the protruding portion in the direction toward the third edge.
As a further improvement of the above technical solution, the light guide plate includes a first edge, a second edge, a third edge and a fourth edge, the first edge is parallel to and opposite to the third edge, the first edge extends along the length direction of the light guide plate, the second edge is parallel to and opposite to the fourth edge, the first edge is connected to the second edge, the distance between the light guide plate hole and the second edge is smaller than the distance between the light guide plate hole and the fourth edge, and the distance between the hole wall of the light guide plate hole and the protruding portion in the direction toward the second edge is larger than the distance between the hole wall of the light guide plate hole and the protruding portion in the direction toward the fourth edge.
As a further improvement of the above technical solution, the light guide plate includes a first edge, a second edge, a third edge and a fourth edge, the first edge and the third edge are parallel and opposite to each other, the second edge and the fourth edge are parallel and opposite to each other, the first edge is connected with the second edge, the distance between the light guide plate hole and the first edge is smaller than the distance between the light guide plate hole and the third edge, the distance between the light guide plate hole and the second edge is smaller than the distance between the light guide plate hole and the fourth edge, the distance between the hole wall of the light guide plate hole and the protrusion part in the direction towards the first side is larger than the distance between the hole wall of the light guide plate hole and the protrusion part in the direction towards the third side, the distance between the hole wall of the light guide plate hole and the protruding part in the direction towards the second side is larger than the distance between the hole wall of the light guide plate hole and the protruding part in the direction towards the fourth side.
As a further improvement of the technical scheme, the distance between the hole wall of the light guide plate hole and the convex part in the first direction is more than or equal to 0.4mm, and the distance in the direction other than the first direction is more than or equal to 0.25 mm.
As a further improvement of the above technical solution, the light guide plate further comprises a reflective film located at the bottom of the light guide plate, wherein a reflective film hole is formed in the reflective film, and the reflective film is sleeved on the protrusion part through the reflective film hole.
As a further improvement of the above technical solution, the light guide plate further comprises a diffusion film located at the top of the light guide plate, wherein the diffusion film is provided with a diffusion film hole, and the diffusion film is sleeved on the protrusion part through the diffusion film hole.
Still provide a display screen, including foretell backlight unit the top of backlight unit is fixed with liquid crystal display.
A mobile phone is also provided, which comprises the display screen.
The utility model has the advantages that: the utility model discloses in through the improvement to light guide plate hole shape among the backlight unit, make the light guide plate be difficult for dragging the frame when cold and hot impact experiment, reduce the cracked risk of light guide plate.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural view of a light guide plate and a frame according to a first embodiment of the present invention;
fig. 2 is an exploded view of the backlight module according to the first embodiment of the present invention;
FIG. 3 is a schematic structural view of a light guide plate and a frame according to a second embodiment of the present invention;
FIG. 4 is a schematic structural view of a light guide plate and a frame according to a third embodiment of the present invention;
fig. 5 is a schematic structural view of a light guide plate and a frame according to a fourth embodiment of the present invention.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, front, rear, etc. used in the present invention is only relative to the mutual position relationship of the components of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
Referring to fig. 1 to 2, a schematic structural diagram of a light guide plate and a frame and an exploded view of a backlight module according to an embodiment of the present invention are respectively shown. The backlight module in this embodiment includes a frame 1, a light guide plate 2, a diffusion film 3, a brightness enhancement film 4, a reflective film 5, and a light-shielding adhesive 6.
The light guide plate 2, the diffusion film 3, the brightness enhancement film 4, and the reflection film 5 are fixed inside the frame 1. The diffusion film 3 is positioned on top of the light guide plate 2, and the brightness enhancement film 4 is positioned on top of the diffusion film 3. The reflective film 5 is located at the bottom of the light guide plate 2, and a reflective protective film is further provided at the bottom of the reflective film 5. The light shading glue 6 is fixed above the bright enhancement film 4. Usually, there is a gap between the brightness enhancement film 4 and the inner sidewall of the frame 1, and the light-shielding glue 6 can cover the gap to prevent the light leakage of the backlight module and the bright edge on the display screen. In addition, the light shielding glue 6 also covers the edges of the hole positions of all the layers of film materials so as to prevent light leakage.
The frame 1 is provided with a protrusion 11, the light guide plate 2 is provided with a light guide plate hole 21, and the light guide plate 2 is fitted over the protrusion 11 through the light guide plate hole 21. An FPC board 22 with an LED is further fixed to the rear end of the light guide plate 2. The diffusion film 3 is provided with diffusion film holes 31, and the diffusion film 3 is fitted to the boss 11 through the diffusion film holes 31. The brightness enhancement film 4 is provided with a brightness enhancement film hole 41, and the brightness enhancement film 4 is fitted to the boss 11 through the brightness enhancement film hole 41. The reflective film 5 is provided with a reflective film hole 51, and the reflective film 5 is fitted to the boss 11 through the reflective film hole 51.
As shown in fig. 1, the light guide plate 2 includes a first side 22, a second side 23, a third side 24, and a fourth side 25. The first edge 22 is located at the head of the light guide plate 2, the third edge 24 is located at the tail of the light guide plate 2, the second edge 23 is located at the left side of the light guide plate 2, and the fourth edge 25 is located at the right side of the light guide plate 2. The first side 22 is parallel to the third side 24, the second side 23 is parallel to the fourth side 25, and the first side 22 and the second side 23 are connected by a transition side 26.
In the present embodiment, the distance between the hole wall of the light guide plate hole 21 and the transition edge 26 is the shortest, and when the projection 11 is pulled by the deformation of the light guide plate hole 21 due to thermal expansion and contraction in the cold and heat shock test, the hole is likely to be broken due to stress concentration. Therefore, in the present embodiment, the distance between the hole wall of the light guide plate hole 21 and the protruding portion 11 in the direction toward the transition edge 26 is set to be larger than the distance in the other direction. The distance between the hole wall of the light guide plate hole 21 and the protruding part 11 in the direction towards the transition edge 26 is not less than 0.4mm, and the distance between the hole wall and the protruding part in the other directions is not less than 0.25 mm. So design can make light guide plate can have sufficient deformation space in this department in the cold and hot impact experiment, is difficult for dragging the frame to reduce the fracture risk of light guide plate. And the distance towards the third side 24 is small, so that bright lines caused by slight light leakage can be prevented from entering the sight range of a user.
In addition, in this embodiment, all there are two hole sites on every layer of membrane material to the setting of two cameras of adaptation.
Referring to fig. 3, in another embodiment of the present invention, the light guide plate hole 21 is located on the central line of the second side 23 and the fourth side 25, and the distance between the hole wall of the light guide plate hole 21 and the first side 22 is smaller than the distance between the hole wall and the third side 24. Accordingly, the position of the boss 11 matches the position of the light guide plate hole 21. In the present embodiment, the distance between the hole wall of the light guide plate hole 21 and the protruding portion 11 in the direction toward the first side 22 is larger than the distance in the direction toward the third side 24.
Referring to fig. 4, in another embodiment of the present invention, the light guide plate hole 21 is located on the central line of the first edge 22 and the third edge 24, and the distance between the hole wall of the light guide plate hole 21 and the second edge 23 is smaller than the distance between the hole wall and the fourth edge 25. Accordingly, the position of the boss 11 matches the position of the light guide plate hole 21. In the present embodiment, the hole wall of the light guide plate hole 21 and the protruding portion 11 have a larger pitch in the direction toward the second side 23 than in the direction toward the fourth side 25.
Referring to fig. 5, in another embodiment of the present invention, the first edge 22 is directly connected to the second edge 23 without a transition edge. In this embodiment, the hole wall of the light guide plate hole 21 is closest to the first side 22 and the second side 23. The distance between the hole wall of the light guide plate hole 21 and the protruding portion 11 in the direction toward the first side 22 is greater than the distance in the direction toward the third side 24, and the distance between the hole wall of the light guide plate hole 21 and the protruding portion 11 in the direction toward the second side 23 is greater than the distance in the direction toward the fourth side 25.
Still provide a display screen including above-mentioned backlight unit, this display screen still includes the liquid crystal display who is fixed in above-mentioned backlight unit's top. Still provide a cell-phone, this cell-phone includes foretell display screen, places the camera in the through-hole that the hole site of each membrane material formed in above-mentioned backlight unit, can hide the camera to further improve the screen and account for the ratio.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A backlight module is characterized by comprising a light guide plate and a frame, wherein the frame is provided with a boss, the light guide plate is provided with a light guide plate hole, and the light guide plate is sleeved on the boss through the light guide plate hole; the direction that the distance between the hole wall of the light guide plate hole and the edge of the light guide plate is the closest is a first direction, and the distance between the hole wall of the light guide plate hole and the protruding part in the first direction is larger than the distance between the hole wall of the light guide plate hole and the protruding part in the direction other than the first direction.
2. The backlight module according to claim 1, wherein the light guide plate comprises a first edge, a second edge and a transition edge, the first edge is connected to the second edge via the transition edge, the distance between the light guide plate hole and the transition edge is smaller than the distance between the light guide plate hole and the edge other than the transition edge, and the distance between the hole wall of the light guide plate hole and the protrusion in the direction toward the transition edge is larger than the distance between the hole wall of the light guide plate hole and the protrusion in the direction other than the transition edge.
3. The backlight module according to claim 1, wherein the light guide plate comprises a first edge, a second edge, a third edge and a fourth edge, the first edge is parallel to and opposite to the third edge, the second edge is parallel to and opposite to the fourth edge, the first edge extends along a width direction of the light guide plate, the first edge is connected to the second edge, a distance between the light guide plate hole and the first edge is smaller than a distance between the light guide plate hole and the third edge, and a distance between the hole wall of the light guide plate hole and the protrusion towards the first edge is larger than a distance between the hole wall of the light guide plate hole and the protrusion towards the third edge.
4. The backlight module according to claim 1, wherein the light guide plate comprises a first edge, a second edge, a third edge and a fourth edge, the first edge is parallel to and opposite to the third edge, the second edge is parallel to and opposite to the fourth edge, the first edge extends along a length direction of the light guide plate, the first edge is connected to the second edge, a distance between the light guide plate hole and the second edge is smaller than a distance between the light guide plate hole and the fourth edge, and a distance between the hole wall of the light guide plate hole and the protrusion in a direction toward the second edge is larger than a distance between the hole wall of the light guide plate hole and the protrusion in a direction toward the fourth edge.
5. The backlight module according to claim 1, wherein the light guide plate comprises a first edge, a second edge, a third edge and a fourth edge, the first edge and the third edge are parallel and opposite to each other, the second edge and the fourth edge are parallel and opposite to each other, the first edge is connected with the second edge, the distance between the light guide plate hole and the first edge is smaller than the distance between the light guide plate hole and the third edge, the distance between the light guide plate hole and the second edge is smaller than the distance between the light guide plate hole and the fourth edge, the distance between the hole wall of the light guide plate hole and the protrusion part in the direction towards the first side is larger than the distance between the hole wall of the light guide plate hole and the protrusion part in the direction towards the third side, the distance between the hole wall of the light guide plate hole and the protruding part in the direction towards the second side is larger than the distance between the hole wall of the light guide plate hole and the protruding part in the direction towards the fourth side.
6. The backlight module according to any of claims 1-5, wherein the distance between the hole wall of the light guide plate hole and the protrusion in the first direction is greater than or equal to 0.4mm, and the distance in the direction other than the first direction is greater than or equal to 0.25 mm.
7. The backlight module according to any one of claims 1 to 5, further comprising a reflective film disposed at the bottom of the light guide plate, wherein the reflective film has a reflective film hole, and the reflective film is sleeved on the protrusion through the reflective film hole.
8. The backlight module according to any one of claims 1 to 5, further comprising a diffusion film disposed on the top of the light guide plate, wherein the diffusion film has a diffusion film hole, and the diffusion film is sleeved on the protrusion portion through the diffusion film hole.
9. A display screen, comprising the backlight module of any one of claims 1 to 8, wherein a liquid crystal display is fixed on the top of the backlight module.
10. A mobile phone comprising the display screen of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920657257.2U CN209946595U (en) | 2019-05-08 | 2019-05-08 | Backlight module, display screen and mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920657257.2U CN209946595U (en) | 2019-05-08 | 2019-05-08 | Backlight module, display screen and mobile phone |
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| Publication Number | Publication Date |
|---|---|
| CN209946595U true CN209946595U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920657257.2U Active CN209946595U (en) | 2019-05-08 | 2019-05-08 | Backlight module, display screen and mobile phone |
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| CN (1) | CN209946595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114153096A (en) * | 2022-01-18 | 2022-03-08 | 友达光电（昆山）有限公司 | Light guide plate, backlight module and display device |
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2019
- 2019-05-08 CN CN201920657257.2U patent/CN209946595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114153096A (en) * | 2022-01-18 | 2022-03-08 | 友达光电（昆山）有限公司 | Light guide plate, backlight module and display device |
| CN114153096B (en) * | 2022-01-18 | 2024-01-23 | 友达光电（昆山）有限公司 | Light guide plate, backlight module and display device |
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