CN201218849Y

CN201218849Y - Light guiding structure with multiple construction surfaces

Info

Publication number: CN201218849Y
Application number: CNU200820036855XU
Authority: CN
Inventors: 朱延专; 王勇智; 荒屋光夫; 王英夫
Original assignee: Radiant Opto Electronics Suzhou Co Ltd
Current assignee: Radiant Opto Electronics Suzhou Co Ltd
Priority date: 2008-05-21
Filing date: 2008-05-21
Publication date: 2009-04-08
Anticipated expiration: 2018-05-21

Abstract

The utility model relates to a light conducting construction having multiple reconstruction surfaces, comprising a light conducting board having an exit surface, a reflector surface proposed in opposite to the exit surface and at least one incidence surface connected with the exit surface and the reflector surface respectively. At least one of the exit surface and the reflector surface is equipped with a plurality of strip shaped light conductors which have sections in V shape, two oblique edge surfaces. An oblique end surface is formed on at least one lateral end of the strip shaped conductor, which inclines to the other lateral end. The light conducing board of the light conducting construction has high outcoming efficiency.

Description

Light guide structure with multiple structure face

Technical field

The present invention relates to a kind of light guide structure, relate in particular to shape and their distributions on light guide plate of strip light conductor, to strengthen the light extraction efficiency of light guide plate with multiple structure face.

Background technology

Light guide plate is an element very important in the module backlight, and it mainly exports module as the conduction of light source in the module with light source.

As shown in Figure 1, light guide plate (1) has the incidence surface (13) that exiting surface (11), the reflecting surface (12) relative with exiting surface (11) and at least one link to each other with reflecting surface (12) with exiting surface (11) respectively.Wherein, exiting surface (11) is used for light source-guide is left light guide plate (1), and reflecting surface (12) can reflect the light source that is mapped on it, thereby makes light source change direct of travel, directive exiting surface (11).Incidence surface (13) is used for receiving the light source from the lamp source, and with the lead inside of light guide plate (1) of light source.

For light source is utilized preferably, in the two at least one of exiting surface (11) or reflecting surface (12) is provided with a plurality of strip light conductors (14), the cross section of strip light conductor (14) is " V " shape, and be recessed into or protrude it face is set, when light source is penetrated and during strip light conductor (14), reflection and refraction take place by two skew back limits of strip light conductor (14) in light source, reach the optically focused purpose, thereby promote the bright dipping briliancy of light guide plate (1).

The application of above-mentioned strip light conductor (14) is the known technology of light conductor (1) practitioner already, in order to obtain the better application effect, many manufacturers set out and study by the spacing between design strip light conductor (14), strip light conductor (14) distribution density and the angle of inclination of the hypotenuse of light conductor (14) on light guide plate (1), but all can not satisfy the demand that it day by day improves.

Summary of the invention

Technical problem to be solved in the utility model is to overcome in the prior art strip light conductor to the effect deficiency of light source, can't make light source reach high brilliant degree and a kind of light guide structure with multiple structure face is provided.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of light guide structure with multiple structure face mainly is to be used for that light guide plate is increased and the interface of light source generation effect, with the increase light extraction efficiency, and then the homogeneity of the light source of lifting output; One side at least in the reflecting surface of light guide plate or the exiting surface is provided with a plurality of strip light conductors that are recessed into or protrude this face, the cross section of this strip light conductor is V-arrangement and has two hypotenuse faces, and at least one side therein forms the angled end-face to another side inclination, make light source can hypotenuse face effect via the dual-side of strip light conductor outside, more become angled end-face is arranged and light source is produced more to act on the interface, and then increase the light extraction efficiency of light guide plate by increasing this strip light conductor.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

At least one side of strip light conductor is formed with towards the angled end-face of another side inclination, and this angled end-face makes light source produce more effect interface, has improved the light extraction efficiency of light guide plate.

Description of drawings

Fig. 1 is the structural representation of light guide plate in the prior art;

Fig. 2 is the structural representation of light guide plate of the present utility model;

The light source motion synoptic diagram that Fig. 3 implements for the utility model;

Fig. 4 is the synoptic diagram of strip light conductor of the present utility model;

Fig. 5 is the synoptic diagram of the another embodiment of strip light conductor of the present utility model;

Fig. 6 is the synoptic diagram of an embodiment again of strip light conductor of the present utility model;

Fig. 7 is the distribution schematic diagram of strip light conductor in light guide plate;

Fig. 8 is the another distribution schematic diagram of strip light conductor in light guide plate;

Wherein:

1, light guide plate; 11, exiting surface; 12, reflecting surface; 13, incidence surface; 14, strip light conductor;

2, light guide plate; 21, exiting surface; 22, reflecting surface; 23, incidence surface; 24, strip light conductor; 241, hypotenuse face; 242, angled end-face.

Embodiment

Light guide structure according to the multiple structure face of having of present embodiment, at first, as shown in Figure 2, light guide plate 2 is made by the material with good light permeability, and it has the plane of incidence 23 that the relative reflecting surface 22 of an exiting surface 21, and exiting surface 21 and at least one link to each other with reflecting surface 22 with exiting surface 21 respectively.At least one is provided with a plurality of strip light conductors 24 in the two for exiting surface 21 and reflecting surface 22, and this strip light conductor 24 is recessed or protrude the surface that it is provided with face, the cross section of each strip light conductor 24 is a V-arrangement, it has two hypotenuse faces 241, the two hypotenuse faces 241 in the same strip light conductor 24 and the angle that is provided with between the face of this strip light conductor 24 can be identical or different, form angled end-face 242 at least one side of strip light conductor 24, this angled end-face 242 tilts towards another side of strip light conductor 24.

As shown in Figure 3, (outstanding to be arranged at exiting surface 21 be example with strip light conductor 24), after light source enters the inside of light guide plate 2 by the incidence surface 23 of light guide plate 2, another side towards light guide plate 2 transmits light source from incidence surface 23, when light source penetrate and reflecting surface 22 in strip light conductor 24 time, light source can produce reflection by the effect of two hypotenuse faces 241 of strip light conductor 24, and advances towards the direction of the exiting surface 21 of light guide plate 2.At this moment, except making the source reflection by two hypotenuse faces 241,242 of angled end-faces can be with the direction different with two hypotenuse faces 241 with source reflection, thereby light extraction efficiency is improved at the emission interface that increases 24 pairs of light sources of each strip light conductor.

As shown in Figure 4, in angled end-face 242 designs of strip light conductor 24 of the present utility model, when being formed with two angled end-faces 242 on each strip light conductor 24, two angled end-faces 242 can become identical or different angle of inclination, two angled end-faces 242 have identical or different area, thereby the both end sides of same strip light conductor 24 is identical or different to the effect of light source, and the effect difference to light source reaches the adjustment to light source whereby.

As shown in Figure 5, the extension that an angled end-face in the strip light conductor 24 is 242 one-tenth bigger and extend less angled end-face 242 with another and link to each other, even, as shown in Figure 6, one side of strip light conductor 24 does not have angled end-face 242, these strip light conductor 24 another sides then form bigger angled end-face 242, and this angled end-face 242 extends to another side of strip light conductor 24.So two sides of the strip light conductor 24 that is provided with can be bigger to the gap of the effect of light source, then bigger space can be arranged for the adjustment of the effect of light source.

As shown in Figure 7, strip light conductor 24 of the present utility model is set in light guide plate 2, can makes 24 one-tenth sparse or distributions closely of strip light conductor according to the difference of light guide plate 2 in the light intensity in diverse location zone.As near incidence surface 23 regional the time, light intensity is stronger, with strip light conductor 24 sparse distribution; Otherwise, away from incidence surface 23 regional the time, be tight distribution.In addition, as shown in Figure 8, strip optical conductor 24 also can be the local distribution shape, promptly in a certain zone of light guide plate 2, a greater number is set but the short strip light conductor 24 of length, like this, utilize the effect of 242 pairs of light source different directions of angled end-face also to strengthen relatively, help of the luminous energy compensation of this zone inner light source, light source is evenly distributed at different directions.

In sum, the utility model changes the strip light conductor structure of light guide plate, forms the light guide structure with multiple structure face, increases the area to the reflecting interface of light source effect, and then can increase light extraction efficiency.This has the light guide structure tool novelty and the progressive of multiple structure face.

Claims

1, a kind of light guide structure with multiple structure face, it comprises light guide plate, described light guide plate has exiting surface, be positioned at the incidence surface that the reflecting surface of described exiting surface relative position and at least one link to each other with described reflecting surface with described exiting surface respectively, described exiting surface, described reflecting surface at least one in the two is provided with a plurality of strip light conductors, the cross section of described strip light conductor is a V-arrangement, described strip light conductor has two hypotenuse faces, it is characterized in that: be formed with the angled end-face that tilts towards another side at least one side of described strip light conductor.

2, the light guide structure with multiple structure face according to claim 1, it is characterized in that: described strip light conductor is arranged with on described reflecting surface or described exiting surface, and perhaps described strip light conductor protrudes and is arranged on described reflecting surface or the described exiting surface.

3, the light guide structure with multiple structure face according to claim 1 is characterized in that: two hypotenuse faces of described strip light conductor and that the angle that is provided with between the face of described strip light conductor is set is identical or different.

4, the light guide structure with multiple structure face according to claim 1 is characterized in that: described strip light conductor is formed with described angled end-face respectively in its two side ends, and the angle of inclination of two described angled end-faces is identical or different.

5, the light guide structure with multiple structure face according to claim 1 is characterized in that: a side of described strip light conductor is formed with described angled end-face, and described angled end-face extends to another side of described strip optical conductor.

6, the light guide structure with multiple structure face according to claim 1 is characterized in that: described strip light conductor distributes more and more closely towards the direction away from the incidence surface of described light guide plate.

7, the light guide structure with multiple structure face according to claim 1, it is characterized in that: described strip light conductor extends along the length direction of described incidence surface, and in the subregion at least of light guide plate, a plurality of described strip optical conductors are local distribution.