CN216248692U

CN216248692U - Display screen backlight module

Info

Publication number: CN216248692U
Application number: CN202122231673.6U
Authority: CN
Inventors: 王佳琳; 王佩
Original assignee: Dongguan Dongchen Electronics Co ltd
Current assignee: Dongguan Dongchen Electronics Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-08
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a display screen backlight module, which comprises a light guide plate, wherein a lamp groove is formed in the outer surface of the left end of the light guide plate, a reflector is connected to the outer surface of the left end of the light guide plate, baffle plates are fixedly arranged at the front end and the rear end of a module box, a clamping groove is formed in the middle of the outer surface of one side of each baffle plate, a lamp bar is arranged at the lower end of the outer surface of one side of each baffle plate, an insulating layer is covered on the outer surface of one side of each baffle plate, a light guide layer is fixedly covered on the outer surface of one side of each insulating layer, the number of the baffle plates is two, a bottom plate is fixedly arranged at the middle of the two baffle plates, a diffusion sheet is fixedly arranged on the outer surface of the upper end of the bottom plate, a brightness enhancement film covers the outer surface of the upper end of the diffusion sheet, and silica gel strips are fixedly arranged on the periphery of the upper end of the bottom plate. The utility model is convenient for increasing the functionality of the backlight module, can improve the use effect of the fabric backlight module and has practicability.

Description

Display screen backlight module

Technical Field

The utility model relates to the technical field of backlight modules, in particular to a display screen backlight module.

Background

Displays (displays) are also commonly referred to as monitors. The electronic document display tool is a display tool which displays a certain electronic document on a screen through a specific transmission device and reflects the electronic document to human eyes. Depending on the material of construction, they can be classified into cathode ray tube displays (CRT), plasma display PDPs, Liquid Crystal Displays (LCD), and the like. The display is an I/O device belonging to a computer, namely an input/output device. It can be classified into CRT, LCD, PDP, OLED, etc. The electronic document display tool is a display tool which displays a certain electronic document on a screen through a specific transmission device and reflects the electronic document to human eyes. The backlight module is one of the key components of the liquid crystal display panel. The function is to provide sufficient brightness and light source with uniform distribution, so that the image can be displayed normally. The backlight is a light source that provides the LCD panel. Mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like. With the development of liquid crystal display technology, the application field of liquid crystal displays, especially color liquid crystal displays, is also widening. Pulled by the market of liquid crystal displays and the backlight industry, the liquid crystal display displays a splendid scene.

But present display screen backlight unit has some defects in the use, display screen backlight unit's structure is comparatively single, when a small amount of LED lamp pearls in backlight unit damage, can cause the luminance of display screen to distribute inhomogeneous, the not clear condition of screen color development, and strong striking can cause droing of display screen backlight unit in the display screen backlight unit use, cause the scintillation of display screen, cause the influence to backlight unit's result of use, consequently, improve backlight unit now.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a display screen backlight module which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a display screen backlight module comprises a light guide plate, wherein a lamp groove is formed in the outer surface of the left end of the light guide plate, a reflector plate is connected to the outer surface of the left end of the light guide plate, lamp beads are arranged on the outer surface of the right end of the reflector plate, a module box is fixedly arranged on the outer surface of the left end of the reflector plate, a PCB circuit board is arranged in the middle of the interior of the module box, baffles are fixedly arranged at the front end and the rear end of the module box, a clamping groove is formed in the middle of the outer surface of one side of each baffle, a lamp bar is arranged at the lower end of the outer surface of one side of each baffle, an insulating layer covers the outer surface of one side of each baffle, a light guide layer covers the outer surface of one side of the insulating layer, the baffles are divided into two groups, a bottom plate is fixedly arranged at the middle positions of the two groups of baffles, a diffusion sheet is fixedly arranged on the outer surface of the upper end of the bottom plate, and a brightness enhancement film covers the outer surface of the upper end of the diffusion sheet, the LED lamp is characterized in that silica gel strips are fixedly mounted on the periphery of the upper end of the bottom plate, clamping bolts are fixedly mounted at the right side positions of the front end and the rear end of the light guide plate, a placing plate is fixedly mounted on the outer surface of the right end of the light guide plate, and toughened films cover the outer surfaces of the upper end and the lower end of the light guide plate.

Preferably, the size of the lamp beads is matched with the size of the lamp grooves, the number of the lamp beads and the number of the lamp grooves are a plurality of groups, the plurality of groups of the lamp beads are arranged at the right end of the reflector in an array mode, and the plurality of groups of the lamp grooves are arranged at the left end of the light guide plate in an array mode.

Preferably, a power panel is fixedly mounted on the outer surface of the left end of the module box, and a power supply is connected to the outer surface of one side of the power panel.

Preferably, the size of the clamping groove is matched with that of the clamping groove, and the light guide plate is connected with the baffle plate through the clamping bolt.

Preferably, the insulating layer is made of epoxy resin, and the length of the bottom plate is the same as that of the light guide plate.

Preferably, the silica gel strip is located in the middle of the bottom plate and the light guide plate, and the silica gel strip is located at the peripheral edge of the light guide plate.

Preferably, the baffle is located at the front side and the rear side of the light guide plate, and the length of the baffle is the same as that of the light guide plate.

Compared with the prior art, the utility model has the following beneficial effects:

1. through the arranged baffle, the lamp strip, the insulating layer, the light guide layer, the diffusion sheet and the brightness enhancement film, the insulating layer is convenient for increasing the insulating function of the baffle and improving the insulating property of the backlight module, the light strip is convenient for increasing the light sources at the front end and the rear end of the backlight module and increasing the display light source of the display screen, the light guide layer is convenient for improving the light guide effect of the lamp bead and the lamp strip, and the diffusion sheet and the brightness enhancement film are convenient for increasing the light source refraction effect of the bottom plate and improving the display effect of the display screen, so that the use effect of the backlight module is improved;

2. through the keeper that sets up, the baffle, the draw-in groove, bottom plate and silica gel strip, the keeper is convenient for the light guide plate to pass through the draw-in groove and is connected with the baffle for steady placing of light guide plate is used in the upper end of bottom plate, two sets of baffles and bottom plate are convenient for protect the four sides position of light guide plate and display screen module, make the connection stability of having increased each part of display screen backlight unit, the silica gel strip is convenient for increase the shock-absorbing function of bottom plate, improve the stability in use of light guide plate, thereby increase backlight unit's practicality.

Drawings

FIG. 1 is a schematic view of an overall structure of a backlight module of a display panel according to the present invention;

FIG. 2 is a schematic view of a light guide plate in a backlight module of a display panel according to the present invention;

FIG. 3 is a schematic diagram illustrating a partial structure of a baffle plate of a backlight module of a display panel according to the present invention;

FIG. 4 is a schematic diagram showing a partial structure of a bottom plate of a backlight module of a display panel according to the present invention;

fig. 5 is an exploded view of the structure of the baffle, the bottom plate and the module box in the backlight module of the display screen according to the present invention.

In the figure: 1 light guide plate, 2 lamp grooves, 3 reflector panels, 4 lamp beads, 5 module boxes, 6PCB circuit boards, 7 baffles, 8 clamping grooves, 9 insulating layers, 10 light guide layers, 11 bottom plates, 12 diffusion sheets, 13 brightness enhancement films, 14 silica gel strips, 15 lamp strips, 16 placing panels, 17 toughened films, 18 power panels and 19 clamping bolts.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means and features of the present invention can be easily understood.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the designated backlight module or element must have a specific orientation to be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, the terms "connected" may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. The connection stability of each part, the shock-absorbing function of bottom plate is convenient for increase by the silica gel strip.

As shown in fig. 1-5, a display screen backlight module comprises a light guide plate 1, a light groove 2 is arranged on the outer surface of the left end of the light guide plate 1, a reflector 3 is connected to the outer surface of the left end of the light guide plate 1, a lamp bead 4 is arranged on the outer surface of the right end of the reflector 3, a module box 5 is fixedly arranged on the outer surface of the left end of the reflector 3, a PCB circuit board 6 is arranged in the middle of the interior of the module box 5, baffles 7 are fixedly arranged at the front end and the rear end of the module box 5, a clamping groove 8 is arranged in the middle of the outer surface of one side of each baffle 7, a lamp bar 15 is arranged at the lower end of the outer surface of one side of each baffle 7, an insulating layer 9 is covered on the outer surface of one side of each insulating layer 9, light guide layers 10 are fixedly covered on the outer surfaces of one side of each baffle 7, two groups of baffles 7 are fixedly arranged on the middle positions of each baffle 7, a bottom plate 11 is fixedly arranged on the outer surface of the upper end of the bottom plate 11, the outer surface of the upper end of the diffusion sheet 12 is covered with a brightness enhancement film 13, the periphery of the upper end of the bottom plate 11 is fixedly provided with silica gel strips 14, the right positions of the front end and the rear end of the light guide plate 1 are fixedly provided with clamping bolts 19, the outer surface of the right end of the light guide plate 1 is fixedly provided with a placing plate 16, and the outer surfaces of the upper end and the lower end of the light guide plate 1 are covered with a toughening film 17.

Wherein, the size of lamp pearl 4 and the size phase-match of light trough 2, the quantity of lamp pearl 4 and light trough 2 is a plurality of groups, and a plurality of groups of lamp pearls 4 are located the right-hand member of reflector panel 3 and are the array formula and arrange, and a plurality of groups of light trough 2 are located the left end of light guide plate 1 and are the array formula and arrange, and backlight unit during operation is lighted the display screen of connecting through lamp pearl 4.

Wherein, the outer fixed surface of the left end of module box 5 installs power strip 18, and one side surface of power strip 18 is connected with the power, uses the electron technique of current display screen backlight unit work, through power to power strip 18 and PCB circuit board power supply for display screen backlight unit normally works.

Wherein, the size of draw-in groove 8 and the size phase-match of draw-in groove 8, light guide plate 1 is connected with baffle 7 through the gim peg 19, and baffle 7 is convenient for protect the front and back both ends of light guide plate 1, increases the firm in connection nature of each part in light guide plate 1 and the display screen backlight unit.

Wherein, the material of insulating layer 9 is epoxy, and the length of bottom plate 11 is the same with the length of light guide plate 1, and the epoxy of insulating layer 9 makes the insulating nature that increases baffle 7, improves the functionality at display screen backlight unit both ends.

The silica gel strip 14 is located between the bottom plate 11 and the light guide plate 1, the silica gel strip 14 is located at the peripheral edge of the light guide plate 1, and the silica gel elastic characteristics of the silica gel strip 14 increase the anti-vibration effect of the backlight module.

The baffle 7 is located at the front side and the rear side of the light guide plate 1, and the length of the baffle 7 is the same as that of the light guide plate 1, so that the front end and the rear end of the light guide plate 1 are protected by the baffle 7, and then the backlight module is reinforced.

It should be noted that, the present invention is a display backlight module, when in use, the light guide plate 1 is moved into the middle position between the module box 5 and the baffle 7 by using the existing display backlight module installation technology, the lamp beads 4 are connected with the light guide plate 1 by the lamp grooves 2, the light guide plate 1 is moved into the card groove 8 at one side of the baffle 7 by the card bolt 19, the power supply board 18 is connected with the power supply to transmit electricity to the PCB circuit board 6 in the module box 5, the lamp beads 4 and the lamp strips 15 are lighted by using the existing electrical technology PCB circuit board 6, the light source is irradiated at the left end of the light guide plate 1 by using the lamp beads 4 through the matching of the light reflecting board 3 and the lamp beads 4, the baffle 7 illuminates the front and back ends of the light guide plate 1 by using the light guide layer 10, the light received by the light guide plate 1 is transmitted above the light guide plate 1 by the bottom board 11 through the upper diffusion sheet 12, so that the light guide plate 1 works normally, the brightness enhancement film 13 that sets up is used for improving the leaded light effect that the bright luminance of receipt of light guide plate 1 improves light guide plate 1, insulating layer 9 is used for increasing the insulating nature of the insulating nature improvement display screen backlight unit both sides of baffle 7, silica gel strip 14 is used for increasing the shock-absorbing function improvement light guide plate 1's of bottom plate 11 use stationarity, tempering film 17 is used for carrying out the reinforcement to light guide plate 1 and handles, increase the hardness of light guide plate 1, avoid the damage of light guide plate 1, thereby the result of use of display screen backlight unit has been improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a display screen backlight unit, includes light guide plate (1), its characterized in that: the lamp groove (2) is formed in the outer surface of the left end of the light guide plate (1), the reflector plate (3) is connected to the outer surface of the left end of the light guide plate (1), lamp beads (4) are arranged on the outer surface of the right end of the reflector plate (3), the module box (5) is fixedly installed on the outer surface of the left end of the reflector plate (3), the PCB (6) is arranged in the middle of the interior of the module box (5), baffles (7) are fixedly installed at the front end and the rear end of the module box (5), a clamping groove (8) is formed in the middle of the outer surface of one side of each baffle (7), a lamp strip (15) is arranged at the lower end of the outer surface of one side of each baffle (7), an insulating layer (9) covers the outer surface of one side of each baffle (7), a light guide layer (10) covers the outer surface of one side of each insulating layer (9), and the baffles (7) are divided into two groups, two sets of the intermediate position fixed mounting of baffle (7) has bottom plate (11), the upper end surface fixed mounting of bottom plate (11) has diffusion piece (12), the upper end surface cover of diffusion piece (12) has brightness enhancement film (13), equal fixed mounting has silica gel strip (14) all around the upper end of bottom plate (11), the equal fixed mounting in right side position at both ends has draw-in bolt (19) around light guide plate (1), the right-hand member surface fixed mounting of light guide plate (1) has places board (16), the upper and lower both ends surface of light guide plate (1) all covers tempering film (17).

2. A display screen backlight module according to claim 1, wherein: the size of the lamp beads (4) is matched with that of the lamp grooves (2), the number of the lamp beads (4) and the number of the lamp grooves (2) are a plurality of groups, the right ends of the lamp beads (4) located on the reflecting plate (3) are arranged in an array mode, and the left ends of the lamp grooves (2) located on the light guide plate (1) are arranged in an array mode.

3. A display screen backlight module according to claim 1, wherein: the power panel (18) is fixedly installed on the outer surface of the left end of the module box (5), and a power supply is connected to the outer surface of one side of the power panel (18).

4. A display screen backlight module according to claim 1, wherein: the size of draw-in groove (8) and the size phase-match of draw-in groove (8), light guide plate (1) is connected with baffle (7) through gim peg (19).

5. A display screen backlight module according to claim 1, wherein: the insulating layer (9) is made of epoxy resin, and the length of the bottom plate (11) is the same as that of the light guide plate (1).

6. A display screen backlight module according to claim 1, wherein: the silica gel strip (14) is located in the middle of the bottom plate (11) and the light guide plate (1), and the silica gel strip (14) is located at the peripheral edge of the light guide plate (1).

7. A display screen backlight module according to claim 1, wherein: the baffle (7) is positioned at the front side and the rear side of the light guide plate (1), and the length of the baffle (7) is the same as that of the light guide plate (1).