CN2544304Y

CN2544304Y - Light guiding board structure

Info

Publication number: CN2544304Y
Application number: CN 02231811
Authority: CN
Inventors: 郭恒晃
Original assignee: Sanhe Entpr Co ltd
Current assignee: Sanhe Entpr Co ltd
Priority date: 2002-05-28
Filing date: 2002-05-28
Publication date: 2003-04-09
Anticipated expiration: 2012-05-28

Abstract

The utility model provides a structure of a light guiding plate, comprising the light guiding plate, the left side and the right side of which are respectively provided with a groove one side of which is attached with a reflection component, a light emitting surface arranged on the light guiding plate, a back surface arranged at the back of the light guiding plate and provided with a plurality of dimpled grains, two light sources arranged respectively in the two grooves, and a lighttight component attached to the back and each side of the light guiding plate; the lighttight component stretches along the left side and the right side to be enclosed inside the two light sources, thus ensuring even brightness of the light emitting surface and achieving the effect of visual comfort.

Description

A kind of light conducting plate structure

Technical field

The utility model relates to the parts on a kind of liquid crystal screen display, relate in particular to a kind of light conducting plate structure, this light guide plate structure-improved can be used on the displays such as LCD screen, wherein the and arranged on left and right sides limit of this light guide plate respectively is provided with a groove, light source is placed in this groove, and add a reflection subassembly, make the concentrated side of light of this light source near this light guide plate exiting surface at the side of this groove, and make the exiting surface brightness of light guide plate device even, reach the vision required standard.

Background technology

Have the light guide plate (as shown in Figure 1) on the displays such as being used for LCD screen now, this light guide plate 2a is provided with an exiting surface 21a; One back side 22a, this back side 22a is provided with a plurality of dimpled grain 27a; This light guide plate 2a can place in the guiding device 1a (as shown in Figure 2), the other light source 3a that respectively is provided with of the left side limit 25a of this light guide plate 2a and a right edge 26a, one light tight assembly 4a is this back side 22a that is attached at this light guide plate 2a, one front side edge 23a, one back side edge 24a, this limit, left side 25a and this right edge 26a, and extend to this limit, left side 25a and this right edge 26a and to coat this two light source 3a in it, on this light guide plate 2a, form the state of a driving fit, in order to preventing light, and be used for reflecting light in this light guide plate 2a to increase the briliancy of this exiting surface 21a from other side dissipation.Light emits from this two light source 3a, and the synoptic diagram of opticpath (shown in Fig. 2 A), light refraction reflex to this exiting surface 21a to this dimpled grain 27a, makes this exiting surface 21a luminous, makes this light guide plate 2a have the effect of leaded light; But existing light conducting plate structure has the situation of brightness disproportionation to be taken place.

Take a broad view of above-mentioned existing light conducting plate structure, the exiting surface that this light guide plate can take place has the situation of brightness disproportionation to take place, edge is, improving of the present utility model people's thoughts the problems referred to above, be that the spy concentrates on studies and cooperates the utilization of scientific principle, propose a kind of reasonable in design and effectively improve the utility model of the problems referred to above.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of light conducting plate structure of improvement, light source is concentrated near this exiting surface, make the dimpled grain of light on can be via the back of the body fill a part reflection, and solve the problem of existing exiting surface brightness disproportionation, make the brightness of this exiting surface even.

To achieve these goals, the utility model provides a kind of light conducting plate structure, comprising: a light guide plate, and this light guide plate and arranged on left and right sides limit respectively is provided with a groove, and a side of this groove attaches a reflection subassembly; One exiting surface is located on this light guide plate; The back of this light guide plate is located at one back side, and this back side is provided with a plurality of dimpled grains; Two light sources are located at respectively in this two groove; And a light tight assembly, be attached at the back side of this light guide plate and each side and to the left and right sides the limit extend and coat this two light source in wherein.

Further specify specific embodiment of the utility model below in conjunction with accompanying drawing

Description of drawings

Fig. 1 is the light guide plate stereographic map of existing light conducting plate structure;

Fig. 2 is the cut-open view of existing light conducting plate structure;

Fig. 2 A is the part cutaway view Amplified image of existing light conducting plate structure, and it discloses the operating state of light guide plate and incident light source;

Fig. 3 is the structure improved light guide plate stereographic map of light guide plate of the present utility model;

Fig. 4 is the structure improved cut-open view of the utility model light guide plate;

Fig. 4 A is the structure improved part cutaway view Amplified image of the utility model light guide plate, and it discloses the operating state of light guide plate and incident light source.

Embodiment

Fig. 3 and shown in Figure 4 in, light conducting plate structure 1 of the present utility model comprises: light guide plate 2, exiting surface 21, the back side 22, front side edge 23, back side edge 24, limit, left side 25, dimpled grain 27, light source 3, light tight assembly 4, reflection subassembly 252, right edge 26,

groove

251 and 261, reflection subassembly 262.Wherein the limit, left side 25 of this light guide plate 2 is provided with a groove 251, this groove 251 is that the side for a L type groove and this groove 251 is to attach a reflection subassembly 252 (can be a reflective mirror), one light source 3 is to be located in this groove 251, the right edge 26 of this light guide plate 2 is provided with another groove 261, the side of this another groove 261 is to attach another reflection subassembly 262, this light source 3 is to be located in this another groove 261, light that can this light source 3 is emitted like this, concentrate the exiting surface 21 that is close to this light guide plate 2, and with this light refraction to a plurality of dimpled grains 27, because the angle in the V-type cross section of these a plurality of dimpled grains 27 is greater than 90 °, so can reach an effect (shown in Fig. 4 A) of filling part reflection, make on the exiting surface 21 brightness evenly and reach the effect of euphorosia.

The structure-improved of the utility model light guide plate in sum, can make light concentrate the exiting surface that is close to this light guide structure, make light can fill a part reflection via the dimpled grain on the back side, thus the problem of the brightness disproportionation of known light guide plate can be solved, to reach the standard that is used for display industry such as LCD screen.

Certainly; the above only is a preferred embodiment of the present utility model; it is not used to limit to practical range of the present utility model; anyly have the knack of this skill person and all should belong to scope of the present utility model in any modification of doing without prejudice to the spirit of this creation, therefore protection domain of the present utility model is when being as the criterion with the desired protection domain of claims.

Claims

1. a light conducting plate structure is characterized in that, comprising: a light guide plate, and this light guide plate left side, right dual-side respectively is provided with a groove, and a side of this groove attaches a reflection subassembly; One exiting surface is located on this light guide plate; The back of this light guide plate is located at one back side, and this back side is provided with a plurality of dimpled grains; Two light sources are located at respectively in this two groove; And a light tight assembly, be attached at the back side of this light guide plate and each side and to the left and right sides the limit extend and coat this two light source in wherein.

2. light conducting plate structure as claimed in claim 1 is characterized in that described groove is a L type groove.

3. light conducting plate structure as claimed in claim 1, the V-type cross section angle that it is characterized in that described dimpled grain is greater than 90 °.

4. light conducting plate structure as claimed in claim 1 is characterized in that described reflection subassembly is parallel with this exiting surface.

5. light conducting plate structure as claimed in claim 1 is characterized in that described reflection subassembly can be a reflective mirror.