CN201344469Y

CN201344469Y - Structure of light guide plate

Info

Publication number: CN201344469Y
Application number: CNU2008203036255U
Authority: CN
Inventors: 王千龙; 苗华凯
Original assignee: Kinpo Electronics Inc
Current assignee: Kinpo Electronics Inc
Priority date: 2008-12-23
Filing date: 2008-12-23
Publication date: 2009-11-11
Anticipated expiration: 2018-12-23

Abstract

A light guide plate structure at least includes a light incoming surface for light to be led in, and a light outgoing surface intersected with the light incoming surface, several diffusion reflection units capable of projecting or sinking on the surface are uniformly distributed on the surface side of the light outgoing surface, a light reflecting layer capable of reflecting light is arranged on the surface of each diffusion reflection unit, when the light emitted by the light guide plate is reflected to the surface of the light guide plate by an external component, the light reflected by the external component can be reflected outwards again by utilizing the projecting or sinking shape of the diffusion reflection unit and matching with the light reflecting characteristic of the light reflecting layer, thereby increasing the brightness of the related backlight module and improving the light illumination efficiency.

Description

Light conducting plate structure

Technical field

The relevant a kind of light conducting plate structure of the present invention is meant a kind of light illumination efficient, enhancement panel backlight illumination and inhomogeneity light conducting plate structure of promoting especially.

Background technology

Light conducting plate structure in the present common backlight module has many kinds of structures, as shown in Figure 1, it is that exiting surface 71 with LGP 7 is made as matsurface, then be provided with some parallel V-shaped grooves 72 in the bottom surface of exiting surface 71 offsides, when practical application, can establish a reflector 73 in addition in this bottom surface side, utilize this reflector 73 can reflect the light that this LGP 7 scatters, and import LGP 7 once more after making it via the scattering of V-shaped groove 72, use and reach even diffusion effect;

Other has structure as shown in Figure 2, it is to be respectively equipped with the optical texture that X, Y direction (vertical mutually) arrange in the exiting surface 701 of LGP 70 and bottom surface 702, and this optical texture can be V-arrangement, U-shaped, the T shape groove that is arranged parallel to each other, the groove that utilizes these two groups of different directions to extend in parallel can produce the light refraction effect of different directions, so that produce the even diffusion effect of expection by the light of LGP 70; And structure shown in Figure 3 then is to be provided with some circular-arc grooves 821 in the bottom surface 82 of LGP 8, and also is provided with some parallel straight flute 811 in exiting surface 81, and it also can produce the even diffusion effect that is similar to (even being better than) earlier figures 2 structures.

The structure of above-mentioned each embodiment of Fig. 1 to Fig. 3 all be utilize exiting surface, bottom surface that some (ditch) conduit is arranged at LGP at least one of them, use the light in the LGP is fully reflected the back outwards penetrate, reach the effect of even diffusion.

Moreover, structure is as shown in Figure 4 arranged again, it is that one of them is provided with some sites 92 in the relative exiting surface of LGP 9 two sides, bottom surface, then be provided with some parallel grooves 91 in another side, and this site 92 is for to be recessed in the shape on LGP 9 surfaces; Structure is as shown in Figure 5 arranged again, and it is based on aforementioned Fig. 4 structure, and its difference only is: some sites 902 of this LGP 90 for protrude from exiting surface, bottom surface one of them, all the other 91 of some parallel grooves are identical; Recessed (protruding) shape of these some sites 92 (902) of this kind structure utilization can produce the characteristic of irregular refraction to light, can reach further evenly diffusion effect.

Yet, above-mentioned each structure its all at the light of LGP inside how outwards evenly diffusion and design improved in addition, but in actual applications, the LGP periphery has many assemblies (for example: shell, button) that the characteristic of light reflection is all arranged, in the light reflected back LGP that can penetrate by this LGP, this part light is kind mostly at present adds utilization, and lets alone random diffusion, one of main cause that the light illumination efficient of formation backlight module can't effectively promote.

Because see that light conducting plate structure has above-mentioned shortcoming, the inventor is the road at those shortcoming research improvement, has the present invention to produce finally.

The utility model content

Technical problem to be solved in the utility model is, at the prior art deficiency, provides a kind of light conducting plate structure, and it can effectively utilize the light of all side assembly reflected back LGPs, promoting the illumination efficiency of light, and then promotes the backlight illumination of panel.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of light conducting plate structure, it comprises that one can import the incidence surface of this LGP inside for light, one exiting surface and this incidence surface intersect, and regional area is evenly equipped with some scattered reflections unit at least on this exiting surface, is provided with a reflector layer in the surface of this scattered reflection unit.

Further improvement of the utility model is, this scattered reflection unit is one to protrude from the convex surface of exiting surface.

Further improvement of the utility model is, this scattered reflection unit is one to protrude from the convex globoidal of exiting surface.

Further improvement of the utility model is, this scattered reflection unit is one to protrude from the hemisphere of exiting surface.

Further improvement of the utility model is, this scattered reflection unit is one to be depressed in the pit of exiting surface.

Further improvement of the utility model is, this scattered reflection unit is one to be depressed in the cancave cambered surface of exiting surface.

Further improvement of the utility model is, this scattered reflection unit is one to be depressed in the hemispherical shrinkage pool of exiting surface.

Compared with prior art, the beneficial effect that the utility model had is: when the utility model uses, utilize the scattered reflection unit to protrude from the cambered surface or the hemisphere shape on exiting surface surface, the reflection action that cooperates its surperficial reflector layer, the reflection again that can make the light on this reflected back LGP surface produce indefinite direction, by this, except making full use of light that the light source body produced to promote the light utilization ratio, also can make the more even diffusion of light, avoid whole generation brightness irregularities backlight or shade situation.

Description of drawings

Fig. 1 system has seen the light conducting plate structure first enforcement aspect schematic diagram.

Fig. 2 system has seen the light conducting plate structure second enforcement aspect schematic diagram.

Fig. 3 system has seen light conducting plate structure the 3rd enforcement aspect schematic diagram.

Fig. 4 system has seen light conducting plate structure the 4th enforcement aspect schematic diagram.

Fig. 5 system has seen light conducting plate structure the 5th enforcement aspect schematic diagram.

Fig. 6 be first embodiment of the invention structure and with relevant backlight assembly exploded view.

Fig. 6 A is the partial enlarged drawing of Fig. 6.

Fig. 7 is a first embodiment of the invention and the combination section of relevant backlight assembly.

Fig. 8 is the light scattering schematic diagram of first embodiment of the invention when practical application.

Fig. 9 be second embodiment of the invention structure and with relevant backlight assembly exploded view.

Fig. 9 A is the partial enlarged drawing of Fig. 9.

Figure 10 is a second embodiment of the invention and the combination section of relevant backlight assembly.

Figure 11 is the light scattering schematic diagram of second embodiment of the invention when practical application.

Label declaration

1,10.... LGP 3..... circuit board

11... incidence surface 31.... conducting contact Copper Foil

12... exiting surface 4..... conductive film

13... through hole 41.... elasticity support sector

14,104.. scattered reflection unit 5..... button

15,105.. reflector layer 6..... cap

2..... light source body

The specific embodiment

Please join Fig. 6, Fig. 6 A, Fig. 7, shown in Figure 8, obviously can find out, LGP 1 structure of first embodiment of the invention mainly comprises: the exiting surface 12 that an incidence surface 11 and intersects with this incidence surface 11 (vertical), and on LGP 1, can be provided with a plurality of through holes 13 according to need corresponding to each button 5, and on this exiting surface 12, be evenly equipped with some scattered reflections unit 14 in addition, in present embodiment, this scattered reflection unit 14 is for protruding from the convex surface on exiting surface 12 surfaces, convex globoidal or hemisphere, and be provided with a reflector layer 15 in these 14 surfaces, scattered reflection unit, this reflector layer 15 can be a reflecting coating layer;

Above-mentioned LGP 1 is applied to one of backlight module possible embodiments, be below this LGP 1, to be provided with a circuit board 3, be provided with each through hole 13 that some conducting contact Copper Foils 31 correspond respectively to LGP 1 in this circuit board 3, and be provided with some light source bodies 2 in incidence surface 11 sides of corresponding LGP 1 and (can be LED, CCFL or other illuminator), and between this circuit board 3 and LGP 1, be provided with a conductive film 4, be provided with the elasticity support sector 41 of some projectioies in this conductive film 4, correspond respectively to each through hole 13 (also the while is corresponding to each conducting contact Copper Foil 31 of circuit board 3) of LGP 1, make each elasticity support sector 41 can by each through hole 13 and with LGP 1 opposite side (top) corresponding key 5 inconsistent combinations, and in each elasticity support sector 41, accommodate one and lead contact (figure does not show), the elastic mechanism that this elasticity support sector 41 is had, system allows that this button 5 produces a deflection when being subjected to the external force operation, make this lead the contact and can contact the formation electrically conducting with the conducting contact Copper Foil 31 of circuit board 3, and when the external force of this operation push-button 5 disappears, utilize the elasticity of this elasticity support sector 41 distortion to order about to lead the contact and return back to original position, simultaneously, a cap 6 can be covered on each button 5 position in addition, LGP 1 top (as Fig. 6, Fig. 6 A, shown in Figure 7).

During use, after light that each light source body 2 is produced imports in these LGPs 1 via incidence surface 11, can in LGP 1, be guided diffusion, and make most of light can be by exiting surface 12 derivation, so, can on each button 5 all side and cap 6, form suitable effect backlight in the printing opacity position; Yet, the above-mentioned light that penetrates by LGP 1, it has the part can be by cap 6 inner surfaces or reflected back LGP 1 surface, button 5 below, at this moment, utilize this scattered reflection unit 14 to protrude from the cambered surface or the hemisphere shape on exiting surface 12 surfaces, the reflection action that cooperates its surperficial reflector layer 15, the reflection again that can make the light on this reflected back LGP 1 surface produce indefinite direction, by this, except making full use of light that light source body 2 produced to promote the light utilization ratio, also can make the more even diffusion of light, avoid whole generation brightness irregularities backlight or shade situation.

Please join Fig. 9 in addition, Fig. 9 A, Figure 10, Figure 11, the LGP 10 of the utility model second embodiment has the incidence surface 11 identical with the LGP 1 of aforementioned first embodiment as can be known, basic structures such as exiting surface 12 and through hole 13, its difference is to be: this LGP 10 evenly is laid with some scattered reflections unit 104 on exiting surface 12, in present embodiment, this scattered reflection unit 104 is the pit that is depressed in exiting surface 12 surfaces, cancave cambered surface or hemispherical shrinkage pool, and be provided with a reflector layer 105 in these 104 surfaces, scattered reflection unit, this reflector layer 105 can be a reflecting coating;

Above-mentioned LGP 10 can be uniformly set between conductive film 4 and each button 5 as first embodiment, and accept the light that light source body 2 is produced, after the light in the LGP 10 is penetrated by exiting surface 12, part light can be by cap 6 inner surfaces or reflected back LGP 10 surfaces, button 5 below, be depressed in the cancave cambered surface or the hemispherical shrinkage pool shape on exiting surface 12 surfaces this moment by this scattered reflection unit 104, the reflection action that cooperates reflector layer 105, the reflection again that can make the light on these reflected back LGP 10 surfaces produce indefinite direction is to reach reflection and the dispersion effect that is similar to first embodiment.

Comprehensive the above, light conducting plate structure of the present invention really can reach guarantee light backlight evenly, promote the effect of back lighting brightness, be the invention of a tool novelty and progressive in fact, patent of invention is filed an application in the whence in accordance with the law.

Claims

1. A light guide plate structure, characterized in that it includes a light incident surface for light to be introduced into the light guide plate, a light exit surface intersects with the light incident surface, and at least a partial area of the light exit surface is evenly distributed with a number of diffusion The reflective unit is provided with a reflective layer on the surface of the diffuse reflective unit.

2. The light guide plate structure according to claim 1, wherein the reflective layer is a reflective paint layer.

3. The light guide plate structure according to claim 2, wherein the diffuse reflection unit is a convex surface protruding from the light-emitting surface.

4. The light guide plate structure according to claim 2, wherein the diffuse reflection unit is a convex arc surface protruding from the light-emitting surface.

5 . The light guide plate structure according to claim 2 , wherein the diffuse reflection unit is a hemisphere protruding from the light emitting surface. 5 .

6 . The light guide plate structure according to claim 2 , wherein the diffuse reflection unit is a pit recessed on the light emitting surface. 6 .

7 . The light guide plate structure according to claim 2 , wherein the diffuse reflection unit is a concave arc surface depressed on the light emitting surface. 8 .

8 . The light guide plate structure according to claim 2 , wherein the diffuse reflection unit is a hemispherical concave hole depressed on the light emitting surface.

9 . The light guide plate structure according to claim 1 , wherein the light emitting surface intersects the light incident surface in a vertical manner.