CN201174015Y

CN201174015Y - Backlight module component construction capable of avoiding front side light leakage

Info

Publication number: CN201174015Y
Application number: CNU2008200930674U
Authority: CN
Inventors: 李剑平; 李秀清
Original assignee: Shenzhen Techaser Technologies Co Ltd
Current assignee: Shenzhen Techaser Technologies Co Ltd
Priority date: 2008-04-01
Filing date: 2008-04-01
Publication date: 2008-12-31
Anticipated expiration: 2018-04-01

Abstract

The utility model discloses a backlight module component structure capable of avoiding front light leakage, comprising a plastic body, a light-proof glue film and a light guide plate and an LCD screen the circumferences of which are enclosed in the plastic body, wherein a plurality of grooves are arranged on the inner side edge of the plastic body; clamping positions corresponding to the grooves are arranged on the side edge of the light guide plate; and the clamping positions on the light guide plate are clamped and embedded into the grooves on the inner side edge of the plastic body. The backlight module component structure increases the effective light-proof area of the light-proof glue film and avoids the light leakage phenomenon and the local light concentration phenomenon of a visual luminous zone by shielding the clamping position of the light guide plate and the plastic body through a light-proof lug on the light-proof glue film.

Description

A kind of back light module group structure that can avoid the front light leak

Technical field:

The utility model relates to a kind of module backlight, particularly a kind of back light module group structure that is applied to can avoid in the liquid crystal indicator front light leak.

Background technology:

Existing module backlight as shown in Figure 1, it comprises: light source 405, reflector plate 407, diffusion sheet 403, light guide plate 404, plastic cement frame 406, prismatic lens 402, one or both sides have the parts such as shading glue film 401 of cementing agent.Wherein the major function of light source 405 provides light and penetrates in light guide plate 404, and reflector plate 407 functions that are positioned at light guide plate 404 belows are above projection light is so far reflexed to, to increase the utilization factor of light.Diffusion sheet 403 is positioned on the light guide plate 404, and its surface is provided with site (diffusion point), will make it to be discovered by positive apparent time the shape and the position of 404 times diffusions of light guide plate point via the equalizing light rays of diffusion point institute scattering.The major function of prismatic lens 402 is that the light of evenly diffusion is proofreaied and correct, and makes it the directive direction of visual lines, and luminance directions is concentrated, and is penetrated by shading glue film 401, and shading glue film 401 then limits the bright dipping zone.

As shown in Figure 2, in module backlight, mainly be that plastic cement frame 1 directly is connected with light guide plate 3 contacts with shading glue film 2, and plastic cement frame 1 and light guide plate 3 fit structures are as shown in Figure 3, wherein screens 301 is stuck in plastic cement frame 1 pivot connected slot 101 on the light guide plate 3, this structure is because shading glue film 2 is less than normal with the bond area of light guide plate 3 screens place at plastic cement frame 1, light leak or visual light-emitting zone occur in this screens place easily and the local optically focused brightness phenomenon that brightens occurs, and influences whole illumination effect.Cause assembling and non-luminous region occurs behind the LCD light phenomenon is arranged.

Summary of the invention:

For solving the problem that occurs light leak and local optically focused in the prior art easily in screens place, the purpose of this utility model is to provide a kind of back light module group structure that can avoid the front light leak, this structure is not being destroyed and is being influenced under the situation of module parts functions of use backlight, promptly guarantee the intensity that is connected of plastic cement frame and light guide plate, can prevent effectively that again non-luminous region light leak or visual light-emitting zone optically focused phenomenon from taking place.

For achieving the above object, the utility model mainly adopts following technical scheme:

A kind of back light module group structure that can avoid the front light leak, comprise plastic body, shading glue film and all around avris be enclosed in light guide plate and LCD screen in the plastic body, the plastic body inner side edge is provided with a plurality of grooves, the light guide plate avris is provided with the screens corresponding with above-mentioned groove, and the screens inlay card is in the groove of plastic body inner side edge on the described light guide plate.

Described shading glue film is bonded on the light guide plate, and its side is provided with the shading projection corresponding with the screens of light guide plate avris.

The utility model is by being placed in light guide plate in the plastic body, and light guide plate and plastic body access section are blocked by the shading projection on the shading glue film, thereby increased effective shading area of shading glue film, avoided the local optically focused phenomenon of light leakage phenomena and visual light-emitting zone.

Description of drawings:

Fig. 1 is existing back light module unit structure synoptic diagram.

Fig. 2 is existing module plastic cement frame backlight and shading glue film assembling synoptic diagram.

Fig. 3 is existing module plastic cement frame backlight and the light guide plate buckle synoptic diagram that is connected.

Fig. 4 is the utility model assembling synoptic diagram.

Fig. 5 is the structural representation of the utility model plastic body and shading glue assembly.

Identifier declaration among the figure: plastic body 1, pivot connected slot 101, groove 102, shading glue film 2, shading projection 201, light guide plate 3, buckle 301, shading glue film 401, prismatic lens 402, diffusion sheet 403, light guide plate 404, light source 405, plastic cement frame 406, reflector plate 407.

Embodiment:

For setting forth core concept of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.

As Fig. 4～shown in Figure 5, the utility model is a kind of back light module group structure that can avoid the front light leak, it mainly comprises plastic body 1, shading glue film 2 and all around avris be enclosed in light guide plate 3 in the plastic body and LCD screen, the inner side edge of wherein said plastic body 1 is provided with a plurality of grooves 102, the avris of light guide plate 3 is provided with the screens 301 corresponding with above-mentioned groove 102, screens 301 inlay cards are in the groove 102 of plastic body 1 inner side edge on the described light guide plate 3, here the LCD screen is between light guide plate 3 and plastic body 1, and inlay card is in plastic body 1, shading glue film 2 then is bonded on the light guide plate 3, and its side is provided with and the corresponding shading projection 201 of light guide plate 3 avris screens 301, by shading projection 201 light guide plate 3 and the access section of plastic body 1 are blocked, thereby increased effective shading area of shading glue film 2, avoided the local optically focused phenomenon of light leakage phenomena and visual light-emitting zone.

Described plastic body 1 is made for adopting the good polycarbonate resin plate (PC) of injection moulding processing characteristics with light guide plate 3, plastic body 1 dual-side respectively is provided with the pivot connected slot 101 of depression more than, the position of described pivot connected slot 101 is corresponding with the buckle of light guide plate 301, plastic body 1 is opened a groove 102 in the pivot connected slot 101 and the abutment wall inboard of light guide plate buckle 301 opposite positions, the inboard size to light guide plate 3 both sides of depth dimensions and width dimensions and abutment wall is suitable, the shading glue film 2 corresponding structures that are located at this place are complementary with plastic body 1 these place's groove 102 structures.

More than a kind of back light module group structure of front light leak of can avoiding provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1, a kind of back light module group structure that can avoid the front light leak, comprise plastic body (1), shading glue film (2) and all around avris be enclosed in light guide plate (3) and LCD screen in the plastic body, it is characterized in that: plastic body (1) inner side edge is provided with a plurality of grooves (102), light guide plate (3) avris is provided with the screens (301) corresponding with above-mentioned groove (102), and described light guide plate (3) goes up screens (301) inlay card in the groove (102) of plastic body (1) inner side edge.

2, the back light module group structure that can avoid the front light leak according to claim 1, it is characterized in that: described shading glue film (2) is bonded on the light guide plate (3), and its side is provided with the shading projection (201) corresponding with light guide plate (3) avris screens (301).