CN220399762U

CN220399762U - Backlight module capable of enhancing corner brightness

Info

Publication number: CN220399762U
Application number: CN202322152188.9U
Authority: CN
Inventors: 杨磊; 樊劼; 阳耀启
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-01-26
Anticipated expiration: 2033-08-10

Abstract

The utility model discloses a backlight module for enhancing corner brightness, which is characterized in that: the LED lamp comprises an LED lamp group, a light guide plate and a frame, wherein the back of the light guide plate is fixedly connected to the frame, the bottom of the LED lamp group is fixedly connected to the inner side of the edge of the frame, the LED lamp group comprises a front LED lamp and an oblique LED lamp, the front LED lamp is located in the middle of the LED lamp group, the light-emitting part of the front LED lamp is opposite to the side edge of the light guide plate, the oblique LED lamp is located at two ends of the LED lamp group, and the light-emitting part of the oblique LED lamp is inclined outwards. In the utility model, the LED lamp group adopts a mode of combining the normal arrangement and the inclined arrangement, and the LED lamps positioned at the corners adopt the inclined arrangement design, so that the condition that the brightness of the corners is dark due to the fact that the light cannot be irradiated at the corners is avoided.

Description

Backlight module capable of enhancing corner brightness

Technical Field

The present utility model relates to backlight technology, and more particularly, to a backlight module for enhancing corner brightness.

Background

In recent years, LEDs have been widely used in the field of illumination due to their advantages such as no pollution, good color rendering, and energy saving, and LEDs have gradually replaced cold cathode fluorescent lamps as the main backlight source of liquid crystal displays in the field of applications of display devices such as liquid crystal televisions and notebook computer displays.

Generally, backlight modules are divided according to the distribution positions of light sources, and there are side-light type and bottom-backlight type. Wherein, the side light type is a backlight source which is made by arranging a linear or point light source on the side edge of a specially designed light guide plate. According to the actual use requirement, the device can be made into a double-sided type or even a three-sided type. However, due to the limitation of the structure, the side light type backlight module is positioned at the corner, and the situation that the brightness of the corner is dark is caused because the light cannot be irradiated, so that the overall brightness of the backlight module is uneven, and the display effect is affected.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and providing a backlight module for enhancing corner brightness.

In order to solve the technical problems, the utility model provides the following technical scheme:

a backlight module for enhancing corner brightness is characterized in that: the LED lamp comprises an LED lamp group, a light guide plate and a frame, wherein the back of the light guide plate is fixedly connected to the frame, the bottom of the LED lamp group is fixedly connected to the inner side of the edge of the frame, the LED lamp group comprises a front LED lamp and an oblique LED lamp, the front LED lamp is located in the middle of the LED lamp group, the light-emitting part of the front LED lamp is opposite to the side edge of the light guide plate, the oblique LED lamp is located at two ends of the LED lamp group, and the light-emitting part of the oblique LED lamp is inclined outwards.

Further, a fixing groove is formed in the inner side of the edge of the frame, and the LED lamp group is arranged in the fixing groove.

Further, fourteen front-mounted LED lamps are arranged in total.

Further, the inclined LED lamps are provided with two lamps.

Further, the inclined LED lamp is smaller than 90 degrees in inclination angle.

Further, the bottom of LED banks is connected with flexible circuit board.

Further, the LED lamp group comprises a reflecting sheet, wherein the reflecting sheet is fixedly connected to one end, close to the LED lamp group, of the light guide plate, and can shield and reflect light emitted by the LED lamp group.

Furthermore, the reflecting sheet and the light guide plate are connected by double-sided adhesive tape.

Further, a film material is arranged on the surface of the light guide plate.

Further, the frame is made of metal.

Compared with the prior art, the utility model has the beneficial effects that: in the utility model, the LED lamp group adopts a mode of combining the normal arrangement and the inclined arrangement, and the LED lamps positioned at the corners adopt the inclined arrangement design, so that the condition that the brightness of the corners is dark due to the fact that the light cannot be irradiated at the corners is avoided. Meanwhile, a strip-shaped reflecting sheet is added on the side face of the LED lamp set, light originally leaked from the gap is reflected back into the backlight, the light utilization rate is improved, and the backlight brightness is improved.

Drawings

FIG. 1 is a front view of a structure of an embodiment of the present utility model;

FIG. 2 is a side cross-sectional view of an embodiment of the present utility model;

wherein: the LED lamp comprises a 1-light guide plate, a 2-frame, a 3-front LED lamp, a 4-oblique LED lamp, a 5-fixing groove, a 6-flexible circuit board, a 7-reflecting sheet and an 8-film material.

Detailed Description

In order to enhance the understanding of the present utility model, the present utility model will be further described in detail with reference to the drawings, which are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 and 2 show a specific embodiment of a backlight module for enhancing corner brightness, which comprises an LED lamp set, a light guide plate 1 and a frame 2, wherein the back surface of the light guide plate 1 is fixedly connected to the frame 2, a fixing groove 5 is arranged on the inner side of the edge of the frame 2, and the LED lamp set is arranged in the fixing groove 5. Wherein, the LED banks includes fourteen overhead LED lamps 3 and two inclined LED lamps 4, and overhead LED lamps 3 are located the middle part of LED banks, and the luminous portion of overhead LED lamps 3 is just to the side of light guide plate 1, and inclined LED lamps 4 are located the both ends of LED banks, and the luminous portion of inclined LED lamps 4 inclines to the outside, and the inclination of inclined LED lamps 4 is less than 90.

Preferably, the bottom of the LED light group is connected with a flexible circuit board 6. The LED lamp group lamp also comprises a reflecting sheet 7, wherein the reflecting sheet 7 is fixedly connected to one end, close to the LED lamp group, of the light guide plate 1, and can shield and reflect light emitted by the LED lamp group. The reflecting sheet 7 is connected with the light guide plate 1 by double-sided adhesive tape. The surface of the light guide plate 1 is provided with a film material 8. The frame 2 is made of metal.

The LED lamp group adopts a mode of combining the normal arrangement and the inclined arrangement, and the LED lamps positioned at the corners adopt the inclined arrangement design, so that the condition that the brightness of the corners is dark due to the fact that the light cannot be irradiated at the corners is avoided. Meanwhile, a strip-shaped reflecting sheet 7 is added on the side face of the LED lamp set, light originally leaked from the gap is reflected back into the backlight, the light utilization rate is improved, and the backlight brightness is improved.

The foregoing detailed description will set forth only for the purposes of illustrating the general principles and features of the utility model, and is not meant to limit the scope of the utility model in any way, but rather should be construed in view of the appended claims.

Claims

1. A backlight module for enhancing corner brightness is characterized in that: including LED banks, light guide plate (1), frame (2), the back fixed connection of light guide plate (1) is in on frame (2), the bottom fixed connection of LED banks is inboard at the edge of frame (2), and the LED banks is including just putting LED lamp (3) and inclined LED lamp (4), just putting LED lamp (3) and being located the middle part of LED banks, just putting the luminous portion of LED lamp (3) just to the side of light guide plate (1), inclined LED lamp (4) are located the both ends of LED banks, and the luminous portion of inclined LED lamp (4) inclines to the outside.

2. The backlight module for enhancing corner brightness of claim 1, wherein: the LED lamp set is characterized in that a fixing groove (5) is formed in the inner side of the edge of the frame (2), and the LED lamp set is arranged in the fixing groove (5).

3. The backlight module for enhancing corner brightness of claim 1, wherein: fourteen front-mounted LED lamps (3) are arranged in total.

4. The backlight module for enhancing corner brightness of claim 1, wherein: the inclined LED lamps (4) are arranged in two.

5. The backlight module for enhancing corner brightness of claim 1, wherein: the inclination angle of the inclined LED lamp (4) is smaller than 90 degrees.

6. The backlight module for enhancing corner brightness of claim 1, wherein: the bottom of the LED lamp group is connected with a flexible circuit board (6).

7. The backlight module for enhancing corner brightness of claim 1, wherein: the LED lamp assembly further comprises a reflecting sheet (7), wherein the reflecting sheet (7) is fixedly connected to one end, close to the LED lamp assembly, of the light guide plate (1), and can shield and reflect light emitted by the LED lamp assembly.

8. The backlight module for enhancing corner brightness of claim 7, wherein: the reflecting sheet (7) is connected with the light guide plate (1) by double-sided adhesive tape.

9. The backlight module for enhancing corner brightness of claim 7, wherein: the surface of the light guide plate (1) is provided with a film material (8).

10. The backlight module for enhancing corner brightness of claim 1, wherein: the frame (2) is made of metal.