CN213750586U

CN213750586U - Backlight module for high-screen-ratio LCD

Info

Publication number: CN213750586U
Application number: CN202021557149.7U
Authority: CN
Inventors: 曾晓虎; 彭益; 张小齐
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-07-20
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a backlight unit for high screen accounts for and compares LCD, the projection of its outline is the rounded rectangle including four fillets, and it includes: the LED backlight module comprises an iron frame, an LED light source and an optical film group, wherein the backlight module is provided with a through hole. The through hole penetrates through the optical diaphragm group and the iron frame. The iron frame at least covers a first round angle of the backlight side of the backlight module close to the through hole and is used for fixing the optical diaphragm. The mechanical strength of the fillet edge of the backlight module with the hollowed structure of the through hole is not lower than that of other positions of the backlight module by the iron frame, and light leakage or uneven light emitting caused by damage of an optical function layer due to deformation can be avoided in the assembling process. The utility model provides a backlight unit for high screen accounts for than LCD has realized the reinforcement to backlight unit's weight has been reduced.

Description

Backlight module for high-screen-ratio LCD

Technical Field

The utility model relates to a show technical field, especially relate to a backlight unit that is used for high screen to account for than LCD.

Background

With the continuous development of the full screen era of the mobile terminal, people cannot meet the screen proportion requirements of a bang (Notch) screen and a water drop screen, and in order to achieve higher screen proportion, the hole digging design is the development trend of the current mobile phone screen.

The hole that is used for leading the camera is dug to the design of digging hollow "on the display screen of mobile terminal such as cell-phone, has a hole of digging promptly on complete LCD display screen, and the camera subassembly is installed in should digging downtheholely, compares in Notch screen and water droplet screen, digs the concept that the hole screen is more close to the full screen in the face. For the backlight module of the LCD, a circular or irregular hole is required to be formed at the position of the light guide plate corresponding to the camera. The hole is close to the edge of the light guide plate, the stress near the edge of the hole is large after injection molding, the glue iron frame and the light guide plate are subjected to cyclic impact under the condition of cold and hot impact, and hole cracking can occur under cyclic impact load. Especially, the mechanical strength of the round edge of the backlight module close to the hollowed structure is lower than that of other positions of the backlight module, so that the optical function layer is damaged due to easier deformation in the assembling process, and light leakage or light emitting unevenness is caused.

Therefore, based on the implementation of high screen ratio LCDs, improvements in the ruggedized design of backlight modules are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a backlight unit who is used for high screen to account for than LCD, has realized the reinforcement to backlight unit's weight has been reduced.

In order to solve the technical problem, the utility model discloses a technical scheme be provide a backlight unit who is used for high screen to account for than LCD, the projection of its outline is the rounded rectangle including four fillets, and it includes: the LED backlight module comprises an iron frame, an LED light source and an optical film group, wherein the backlight module is provided with a through hole. The through hole penetrates through the optical diaphragm group and the iron frame. The iron frame at least covers a first round angle, close to the through hole, of the backlight side of the backlight module, and is used for fixing the optical diaphragm. The iron frame enables the mechanical strength of the round corner edge of the backlight module with the through hole in the hollow structure to be not lower than other positions of the backlight module, and light leakage or light emitting unevenness caused by damage of an optical function layer due to deformation can be avoided in the assembling process. Meanwhile, the iron frame partially covers the backlight module, so that thinning and weight reduction are realized.

In a preferred embodiment, the iron frame comprises an iron frame body and a cylindrical structure located at the position of the through hole, and the iron frame body extends along the inner wall of the through hole to form the cylindrical structure. The cylindrical structure further reinforces the structural strength of the backlight module on one hand, and on the other hand, the cylindrical structure blocks light rays outside the through hole to eliminate light leakage at the position of the through hole. The iron frame body and the cylindrical structure are integrally formed by the same material in the same process.

In a preferred embodiment, the backlight module further comprises a rubber frame disposed around the optical film group.

In a preferred embodiment, the rubber frame is integrally connected with the iron frame through injection molding.

In a preferred embodiment, the bezel is further adapted to fixedly mount a device within the through hole.

In a preferred embodiment, the chase covers a part of the edge of the through-hole.

Alternatively, the iron frame may be replaced with an aluminum alloy, resin, or other rigid material.

Drawings

The invention and its advantages will be better understood by studying the following non-limiting examples, and by studying the detailed description of specific embodiments shown in the appended drawings, in which:

fig. 1 is a plan view of a backlight module according to embodiment 1 of the present invention.

Fig. 2 is a cross-sectional view of a backlight module according to embodiment 1 of the present invention.

Fig. 3 is a perspective view of an iron frame of a backlight module according to embodiment 1 of the present invention.

Fig. 4 is a perspective view of an iron frame and a rubber frame of a backlight module according to embodiment 2 of the present invention.

Fig. 5 is an exploded view of the backlight module according to embodiment 2 of the present invention.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], refer to the directions of the attached drawings only. The directional or positional relationships indicated are those shown in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, configuration and operation in a particular orientation, and is therefore not to be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

First, a backlight module for a high screen ratio LCD according to embodiment 1 of the present invention will be described with reference to fig. 1 to 3. According to the backlight module 10 of embodiment 1 of the present invention, as shown in fig. 2, the projection of the outer contour is a rounded rectangle including four rounded corners 101, which includes: the backlight module comprises an iron frame 102, an LED light source 103 and an optical film group 200, wherein the backlight module is provided with a through hole 104. The through hole 104 penetrates through the optical film set 200 and the bezel 102. The bezel 102 covers at least a first rounded corner of the backlight side of the backlight module 10 near the through hole 104 for fixing the optical film. The bezel 102 makes the mechanical strength of the rounded edge of the backlight module with the hollowed structure of the through hole 104 not lower than that of other positions of the backlight module, and light leakage or light emission unevenness caused by the damage of the optical function layer due to deformation can be avoided in the assembling process. Meanwhile, the iron frame 102 partially covers the backlight module to realize thinning and weight reduction. The optical film set 200 includes a light guide plate 230 disposed on one side of the LED light source 103, a diffusion film 220 disposed above the light guide plate 230, a prism sheet 210 disposed above the diffusion film 220, and a reflective sheet 240 disposed below the light guide plate 230.

The iron frame 102 includes an iron frame body 1020 and a cylindrical structure 1021 at the position of the through hole 104, and the iron frame body extends along the inner wall of the through hole 104 to form the cylindrical structure 1021. On one hand, the cylindrical structure 1021 further reinforces the structural strength of the backlight module, and on the other hand, the cylindrical structure 1021 blocks light rays outside the through hole 104, so that light leakage at the position of the through hole 104 is eliminated. The iron frame body 1020 and the cylindrical structure 1021 are integrally formed by the same material in the same process.

The bezel 102 is also used to fixedly mount devices, including cameras and FACE ID infrared sensors, within the through-holes 104.

Alternatively, the chase 102 may be replaced with an aluminum alloy, resin, or other rigid material.

Example 2

Fig. 4-5 are exploded views of a backlight module according to embodiment 2 of the present invention. Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The backlight module further includes a rubber frame 105 disposed around the optical film set 200. The rubber frame 105 is integrally connected with the iron frame 102 through injection molding.

Example 3

Only the differences between embodiment 3 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The bezel 102 covers a portion of the edge of the through hole 104.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the description of such combinations is not exhaustive for reasons of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A backlight module for a high-screen-ratio LCD, the projection of its outer contour being a rounded rectangle comprising four rounded corners, comprising: the LED backlight module comprises an iron frame, an LED light source and an optical film group, and is characterized in that the backlight module is provided with a through hole; the through hole penetrates through the optical diaphragm group and the iron frame; the iron frame at least covers a first fillet of the backlight side of the backlight module, which is close to the through hole, and is used for fixing the optical diaphragm group.

2. The backlight module for a high screen ratio LCD according to claim 1, wherein: the iron frame comprises an iron frame body and a tubular structure located at the position of the through hole, wherein the iron frame body is formed by extending the inner wall of the through hole to form the tubular structure.

3. The backlight module for a high screen ratio LCD according to claim 2, wherein: the iron frame body and the cylindrical structure are integrally formed by the same material in the same process.

4. The backlight module for a high screen ratio LCD according to claim 1, wherein: the backlight module also comprises a rubber frame which is arranged around the optical diaphragm group.

5. The backlight module for high-screen-ratio LCD according to claim 4, characterized in that: the rubber frame is integrally connected with the iron frame through injection molding.

6. The backlight module for a high screen ratio LCD according to claim 1, wherein: the iron frame is also used for fixedly mounting devices in the through holes.

7. The backlight module for a high screen ratio LCD according to claim 1, wherein: the iron frame covers partial edges of the through hole.

8. The backlight module for a high screen ratio LCD according to any one of claims 1 to 7, wherein: and replacing the iron frame with aluminum alloy or resin.