CN219225266U

CN219225266U - Backlight module capable of improving backlight brightness

Info

Publication number: CN219225266U
Application number: CN202223608546.4U
Authority: CN
Inventors: 卢本劲; 蔡育林
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-20
Anticipated expiration: 2032-12-30

Abstract

A backlight module for improving backlight brightness is characterized in that: including LED lamp, light guide plate, membrane material, center, back iron stand, reflector plate, one side fixed connection of light guide plate is in back iron stand is last, and the opposite side surface is provided with the membrane material, the LED lamp sets up in the light guide plate bottom, the center sets up in the outside of membrane material, the upper and lower both ends of center with back iron stand links to each other, reflector plate fixed connection is in the one end that the light guide plate is close to the LED lamp can shelter from and reflect the light that the LED lamp sent. According to the utility model, the strip-shaped reflecting sheet is added on the side surface of the LED lamp, so that the 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 side surface of the module of the middle rubber frame is provided with a protruding structure, and the reflecting sheet is further pressed from the side surface, so that the firmness of the reflecting sheet is further ensured.

Description

Backlight module capable of improving backlight brightness

Technical Field

The present utility model relates to the field of backlight technology, and in particular, to a backlight module capable of improving backlight 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.

For the backlight module, under the condition of high and low temperature, the membrane material in the backlight module can be expanded and contracted, so that the fixation of the membrane material cannot be pressed in a closed manner, and the problem of membrane wrinkling caused by insufficient expansion and contraction space of the membrane material is avoided.

For the backlight module with the middle rubber frame or the middle iron frame, in order to avoid the problem of film wrinkling, a certain gap is reserved between the middle rubber frame or the middle iron frame and the film material, so that the film material is prevented from being pressed. And a certain space is required to be reserved between the film material and the backlight appearance. Therefore, a certain opening exists above the LED backlight lamp strip, part of light can leak from the position, and the light utilization rate is reduced.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and provides a backlight module for improving the backlight brightness.

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

a backlight module for improving backlight brightness is characterized in that: including LED lamp, light guide plate, membrane material, center, back iron stand, reflector plate, one side fixed connection of light guide plate is in back iron stand is last, and the opposite side surface is provided with the membrane material, the LED lamp sets up in the light guide plate bottom, the center sets up in the outside of membrane material, the upper and lower both ends of center with back iron stand links to each other, reflector plate fixed connection is in the one end that the light guide plate is close to the LED lamp can shelter from and reflect the light that the LED lamp sent.

Further, a cavity is formed by surrounding the bottom of the rear iron frame, the light guide plate and the reflecting sheet, and the LED lamp is arranged at the bottom of the cavity.

Further, a flexible circuit board is arranged at the bottom of the LED lamp.

Further, the middle frame is a middle rubber frame, a protrusion is arranged at the bottom of the middle rubber frame, and the protrusion abuts against the reflecting sheet.

Further, the middle frame is a middle iron frame.

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

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the strip-shaped reflecting sheet is added on the side surface of the LED lamp, so that the 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 side surface of the module of the middle rubber frame is provided with a protruding structure, and the reflecting sheet is further pressed from the side surface, so that the firmness of the reflecting sheet is further ensured.

Drawings

FIG. 1 is a schematic diagram of a structure of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of the present utility model;

wherein: the LED lamp comprises a 1-LED lamp, a 2-light guide plate, a 3-film material, a 4-middle rubber frame, a 5-rear iron frame, a 6-reflecting sheet, a 7-chamber, an 8-flexible circuit board, a 9-bulge and a 10-middle iron frame.

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.

Example 1

Fig. 1 shows an embodiment 1 of a backlight module for improving backlight brightness, which comprises an LED lamp 1, a light guide plate 2, a film 3, a middle iron frame 10, a rear iron frame 5 and a reflecting sheet 6, wherein one side of the light guide plate 2 is fixedly connected to the rear iron frame 5, the film 3 is arranged on the surface of the other side, the middle iron frame 10 is arranged on the outer side of the film 3, the upper end and the lower end of the middle iron frame 10 are connected with the rear iron frame 5, the reflecting sheet 6 is fixedly connected to one end, close to the LED lamp 1, of the light guide plate 2, a cavity 7 is formed by surrounding the bottom of the rear iron frame 5, the light guide plate 2 and the reflecting sheet 6, and the LED lamp 1 is arranged at the bottom of the cavity 7 and can shield and reflect light emitted by the LED lamp 1.

Preferably, the bottom of the LED lamp 1 is provided with a flexible circuit board 8. The reflecting sheet 6 is connected with the light guide plate 2 by double-sided adhesive tape.

Example two

Fig. 2 shows a second embodiment of a backlight module for improving backlight brightness, in which a middle frame 4 is used as a middle frame, a protrusion 9 is disposed at the bottom of the middle frame 4, and the protrusion 9 abuts against a reflective sheet 6 to further press the reflective sheet 6, so as to ensure the firmness of the reflective sheet 6. The rest of the structure is the same as in the first embodiment.

When the embodiment works, the LED lamp 1 is enclosed in the formed cavity 7 by the strip-shaped reflecting sheet 6 added on the side surface of the LED lamp 1, and the reflecting sheet 6 can reflect the light originally leaked from the gap back into the cavity 7 inside the backlight, so that 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 improving backlight brightness is characterized in that: including LED lamp (1), light guide plate (2), membrane material (3), center, back iron stand (5), reflector plate (6), one side fixed connection of light guide plate (2) is in back iron stand (5), the opposite side surface is provided with membrane material (3), LED lamp (1) set up in light guide plate (2) bottom, the center sets up in the outside of membrane material (3), the upper and lower both ends of center with back iron stand (5) link to each other, reflector plate (6) fixed connection be in light guide plate (2) are close to the one end of LED lamp (1), can shelter from and reflect the light that LED lamp (1) sent.

2. The backlight module for improving backlight brightness according to claim 1, wherein: the bottom of the rear iron frame (5), the light guide plate (2) and the reflecting sheet (6) are surrounded to form a cavity (7), and the LED lamp (1) is arranged at the bottom of the cavity (7).

3. The backlight module for improving backlight brightness according to claim 2, wherein: the bottom of the LED lamp (1) is provided with a flexible circuit board (8).

4. The backlight module for improving backlight brightness according to claim 1, wherein: the middle frame is a middle rubber frame (4), a bulge (9) is arranged at the bottom of the middle rubber frame (4), and the bulge (9) is abutted against the reflecting sheet (6).

5. The backlight module for improving backlight brightness according to claim 1, wherein: the middle frame is a middle iron frame (10).

6. The backlight module for improving backlight brightness according to claim 1, wherein: the reflecting sheet (6) is connected with the light guide plate (2) by double-sided adhesive tape.