CN205334017U - Backlight source - Google Patents

Abstract

The utility model discloses a backlight source, including frame and the light guide plate of setting in the frame, the frame side is provided with the light emitting source towards one side of light guide plate, the play plain noodles of light guide plate is provided with the diffusion barrier, one side that the light guide plate was perhaps kept away from near the one end of light emitting source in the one side towards the light guide plate to the diffusion barrier is provided with black printing ink layer. This backlight source sets up black printing ink layer through the surface that is close to light emitting source one end at the diffusion barrier, replaces the black blackfilled compound on the former diffusion barrier, plays shading effect, and FPC extends to former black blackfilled compound's position to the light guide plate, increases FPC pastes the double faced adhesive tape on the light guide plate area, strengthens backlight source's stability.

Description

a backlight

technical field

The utility model relates to the field of liquid crystal display, in particular to a backlight source.

Background technique

With the popularization of liquid crystal display devices, consumers have continuously increased requirements on the brightness of the backlight of the liquid crystal display module. Increasing the number of LED lights installed on the FPC in the backlight is the most direct and effective way to increase the brightness of the backlight, but with the increase in the number of LED lights, the area of double-sided tape pasted between adjacent LEDs will decrease. The number of existing backlight LED lights has caused that the space between adjacent LEDs cannot be pasted with double-sided tape or can only be partially pasted with double-sided tape, while the FPC light bar is completely fixed by double-sided tape, and the number of too many LEDs is reduced. The area where the double-sided adhesive is pasted on the FPC to fix it on the light guide plate is small, and the too small pasting area has affected the stability and consistency of the backlight.

Utility model content

In order to solve the deficiencies in the prior art above, the utility model provides a backlight source, which includes a frame and a light guide plate arranged in the frame, a light source is arranged on the side of the frame facing the light guide plate, and the light guide plate The light emitting surface is provided with a diffusion film, and the end of the diffusion film close to the light source is provided with a black ink layer on the side facing the light guide plate or the side away from the light guide plate. The backlight provides a black ink layer on the surface of the diffusion film near the light source to replace the black vinyl on the original diffusion film to achieve a light-shielding effect. The space of the original black vinyl can be used to increase the space for FPC to paste double-sided adhesive Area, enhance the stability of the backlight.

The technical problems to be solved by the utility model are realized through the following technical solutions:

A backlight source, comprising a frame and a light guide plate arranged in the frame, a light emitting source is provided on the side of the frame facing the light guide plate, a diffusion film is provided on the light emitting surface of the light guide plate, and the diffusion film is close to the light emitting One end of the light source is provided with a black ink layer on the side facing the light guide plate or on the side away from the light guide plate.

In the existing backlight source, in order to prevent light leakage and overflow at the end of the visible area close to the light source, the diffusion film is extended toward the light source, and black vinyl is pasted on the upper surface of the extension to achieve the purpose of shading. The black ink layer has a light-absorbing effect. Setting a black ink layer on the surface of the diffusion film near the light source can replace the light-absorbing effect of the black vinyl on the original backlight diffusion film, preventing the visible area from overflowing at the end close to the light source. The thickness of the black ink layer is so thin that it does not affect the thickness of the backlight.

Further, the light emitting source is connected with an FPC, and the FPC extends to the light guide plate and is pasted and fixed by a double-sided adhesive.

Setting a black ink layer on the diffusion film can reserve the space occupied by the original black vinyl. The FPC and double-sided tape are lengthened toward the viewing area, increasing the area where the FPC and the light guide plate are pasted and fixed with the double-sided tape, and improving the stability of the backlight bar. sex.

Further, a reflective sheet is provided on the side of the light guide plate away from the light-emitting surface.

Further, a light enhancing film is provided on a side of the diffusion film away from the light guide plate.

Further, a shading sheet is provided on the frame, and the shading sheet is black and black glue or black and white glue.

The utility model has the following beneficial effects: the backlight source is provided with a black ink layer on the surface of the diffusion film near the light source, replacing the black vinyl on the original diffusion film to achieve a light-shielding effect, and the space of the original black vinyl can be used In order to increase the area of FPC pasted with double-sided tape, and enhance the stability of the backlight.

Description of drawings

FIG. 1 is a structural diagram of a backlight source provided by the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in FIG. 1 , a backlight source includes a frame 1 and a light guide plate 2 arranged in the frame 1 , a light source 3 is arranged on a side of the frame 1 facing the light guide plate 2 , and the light guide plate 2 The light emitting surface is provided with a diffusion film 4, the end of the diffusion film 4 close to the light source 3 is provided with a black ink layer 6 on the side facing the light guide plate 2 (not shown in the figure) or on the side away from the light guide plate 2, so The side of the diffusion film 4 far away from the light guide plate 2 is provided with an upper light enhancement film 8 and a lower light enhancement film 7 in sequence, the frame 1 is provided with a light-shielding sheet 9, and the side of the light guide plate 2 away from the light-emitting surface is provided with a reflective sheet 11. Wherein, the light-shielding sheet 9 is black and black glue or black and white glue.

In the existing backlight source, in order to prevent light leakage and overflow phenomenon at the end of the visible area close to the light source 3, the diffusion film 4 will be extended to the light source 3, and black vinyl glue will be pasted on the upper surface of the extended part to play a light-shielding role. the goal of. The black ink layer 6 has a light-absorbing effect, and the black ink layer 6 arranged on the surface of the diffusion film 4 near the end of the light source 3 can replace the light-absorbing effect of the black vinyl on the original backlight diffusion film 4, preventing the visible area from approaching the light source 3 One end of the backlight produces overflow light, and the thickness of the black ink layer 6 is very thin, which will not affect the thickness of the backlight.

The light emitting source 3 is connected with an FPC5, and the FPC5 extends to the light guide plate 2 and is pasted and fixed by a double-sided adhesive tape 10 .

Setting the black ink layer 6 on the diffusion film 4 can reserve the space occupied by the original black vinyl, and the FPC5 and the double-sided adhesive tape 10 are lengthened toward the viewing area, increasing the area where the FPC5 and the light guide plate 2 are pasted and fixed to the double-sided adhesive tape 10, thereby improving the The stability of the backlight bar.

The above-mentioned embodiments only express the implementation manner of the present utility model, and its description is comparatively specific and detailed, but can not therefore be interpreted as the restriction to the patent scope of the present utility model, as long as adopt the form of equal replacement or equivalent transformation to obtain All technical solutions should fall within the protection scope of the present utility model.

Claims (6)

1. a backlight, including framework and the light guide plate being arranged in framework, described frame sides is provided with luminous source towards the side of light guide plate, the exiting surface of described light guide plate is provided with diffusion barrier, it is characterized in that, described diffusion barrier is provided with black ink layer near one end of luminous source in the side towards light guide plate or the side away from light guide plate。

2. backlight according to claim 1, it is characterised in that described luminous source is connected to FPC, and described FPC extends on light guide plate, pastes fixing。

3. backlight according to claim 2, it is characterised in that described FPC and light guide plate are fixed by sticking double faced adhesive tape。

4. backlight according to claim 1, it is characterised in that described light guide plate is provided with reflector plate away from the side of exiting surface。

5. backlight according to claim 1, it is characterised in that described diffusion barrier is provided with bright enhancement film away from the side of light guide plate。

6. backlight according to claim 1, it is characterised in that be provided with brake sack on described framework。