CN201000493Y

CN201000493Y - Structure improvement for light conducting plate

Info

Publication number: CN201000493Y
Application number: CNU2007200031310U
Authority: CN
Inventors: 张庆辉
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2007-01-31
Filing date: 2007-01-31
Publication date: 2008-01-02
Anticipated expiration: 2017-01-31

Abstract

The utility model relates to a structure improvement for a light guiding plate, which at least comprises a light induction surface, a bottom surface intersected with the light induction surface, a light extraction surface opposite to the bottom surface, a first lateral surface and a second lateral surface intersected with the bottom surface and the light extraction surface, and a third lateral surface intersected with the bottom surface and the light extraction surface and opposite to the light induction surface; wherein a random lateral surface of the first lateral surface, the second lateral surface and the third lateral surface or two random lateral surfaces or three random lateral surfaces are provided with a group or more than a group of groove group, or formed an inclined surface part to destroy the light traveling path, to make the light ray of the light source enter into the light guiding plate from the light induction surface, and then the light ray passing by each lateral surface of the light guiding plate is refracted to the light extraction surface to increase the utilization ratio of the light source through the groove groups or the arrangement of the inclined surface.

Description

The structural improvement of light guide plate

Technical field

The utility model relates to a kind of light conducting plate structure improvement, aims to provide a kind of the improvement and practises the problem that light guide plate side light losing is arranged, and can effectively increase the light conducting plate structure improvement of light source utilization factor.

Background technology

Generally be applied in the LCD of massaging device, can be according to the demand of actual design, and select to utilize the backlight module framework of straight-down negative or side-light type; As shown in Figure 1, be the basic structure synoptic diagram of a side light type back light module framework, this light guide plate 1 includes bottom surface that incidence surface 11, intersects with this incidence surface 11 12, an exiting surface 13 relative with this bottom surface 12, two first and

second sides

14,15 of intersecting, and the 3rd crossing with bottom surface 12 and exiting surface 13 an and relative side 16 with incidence surface 11 with bottom surface 12 and exiting surface 13.

Wherein, this light source 21 is arranged at the incidence surface 11 of light guide plate 1, and light guide plate 1 below also is provided with a reflector plate 22, makes the light of light source 21 be able to inject from this incidence surface 11, and the exiting surface 12 by light guide plate 1 front penetrates again, to reach the effect that light source shows; Yet the part light of this light source 21 is injected first, second and

third side

14,15,16, and because of each side is straight structure, its light by each side 14, causes the loss of light easily.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of the improvement to practise the problem that each side light losing of light guide plate is arranged, and can effectively increase the light conducting plate structure improvement of light source utilization factor.

The structure improved solution of the utility model light guide plate, this light guide plate includes bottom surface that incidence surface, intersects with this incidence surface, an exiting surface relative with this bottom surface at least, two first and second sides of intersecting with bottom surface and exiting surface, and one with the bottom surface and exiting surface is crossing and three side relative with incidence surface; Wherein, this an arbitrary side, first, second and third side or a two sides or three sides are provided with a group or more groups of slots, perhaps form inclined plane part, to destroy the light travel path.

The beneficial effects of the utility model are: after the light of light source enters light guide plate by incidence surface, make light through each side of light guide plate via the setting on groups of slots or inclined-plane, refrangible is to the exiting surface place, to increase the light source utilization factor.

Description of drawings

Fig. 1 is a structural representation of commonly using light guide plate;

Fig. 2 is the structural perspective of light guide plate first embodiment in the utility model;

Fig. 3 is the structural representation of light guide plate first embodiment in the utility model;

Fig. 4 A, B are the structural representation of light guide plate second embodiment in the utility model;

Fig. 5 A, B are the structural representation of light guide plate the 3rd embodiment in the utility model;

Fig. 6 A, B are the structural representation of light guide plate the 4th embodiment in the utility model;

Fig. 7 is the structural perspective of light guide plate the 5th embodiment in the utility model;

Fig. 8 is the structural representation of light guide plate the 6th embodiment in the utility model;

Fig. 9 A, B are the structural representation of light guide plate the 7th embodiment in the utility model.

[figure number explanation]

1 light guide plate, 11 incidence surfaces

12 bottom surfaces, 13 exiting surfaces

15 second sides, 14 first sides

16 the 3rd sides, 21 light sources

22 reflector plates, 3 light guide plate

31 incidence surfaces, 32 bottom surfaces

33 exiting surfaces, 34 first sides

The 3rd side, 35 second sides 36

371 groups of slots, 372 groups of slots

373 grooves, 374 inclined plane parts

41 light sources

Embodiment

The structural improvement of the utility model light guide plate, be primarily aimed at that light guide plate is improved in the side light type back light module framework, as shown in Figure 2, its light guide plate 3 includes incidence surface 31 at least, one bottom surface 32 of intersecting with this incidence surface 31, one exiting surface 33 relative with this bottom surface 32, two with bottom surface 32 and exiting surface 33 intersect first, two side faces 34,35, and one intersect with bottom surface 32 and exiting surface 33 and three side 36 relative with incidence surface 31, and light source 41 is arranged at a side that should incidence surface 31, its light source 41 can be light emitting diode, make light be able to inject from this incidence surface 31, exiting surface 33 by light guide plate 3 fronts penetrates again, to reach the effect that light source shows.

Focusing on of this case: this is first years old, two, wherein arbitrary side, three sides is provided with a group or more groups of slots, among the embodiment as shown in Figure 2, be provided with one group of groups of slots 371 in the 3rd side 36, its groups of slots 371 is made up of some grooves 373, each groove 373 can be V-groove, and each groove 373 is horizontal (can also be homeotropic alignment certainly), when the light of light source 41 enters light guide plate 3 by incidence surface 31, this light can be via each groove 373, as shown in Figure 3, change the travel path of light, make light refraction, to increase the light source utilization factor to exiting surface 33 places; Certainly, also can wherein appoint two sides to be provided with a group or more groups of slots, perhaps be equipped with a group or more groups of slots in first, second and third side in first, second and third side.

Shown in Fig. 4 A, be second embodiment of the present utility model, this first side 34 is provided with one group of groups of slots 371, its groups of slots 371 is made up of some grooves 373, each groove 373 can be the arcuation groove, and each groove 373 is homeotropic alignment (certainly can also for horizontally), and 373 of each grooves have gap P, shown in Fig. 4 B.

Wherein arbitrary side is provided with first and second group groups of slots to the 3rd embodiment of the present utility model in first, second and third side, shown in Fig. 5 A, B, its the 3rd side 36 is provided with first and second group groups of slots 371,372, its first and second group groups of slots 371,372 is level, vertical direction is arranged, and first and second group groups of slots 371,372 is made up of some grooves 373 equally; Certainly, also can wherein appoint two sides to be provided with first and second group groups of slots, perhaps be equipped with first and second group groups of slots in first, second and third side in first, second and third side.

Moreover, wherein arbitrary side forms inclined plane part to the 4th embodiment of the present utility model in this first, second and third side, and as shown in Figure 6A, the 3rd side 36 forms inclined plane part 374, and be the inclined plane part 374 that expands outwardly downwards, also can be the inclined plane part 374 that upwards expands outwardly, shown in Fig. 6 B, when the light of light source 41 enters light guide plate 3 by incidence surface 31, this light can be via inclined plane part 374, change the travel path of light, make light refraction, to increase the light source utilization factor to exiting surface 33 places; Certainly, also can wherein appoint two sides to form inclined plane part (as shown in Figure 7 in first, second and third side, its first and

third side

34,36 forms inclined plane part 374), perhaps all form inclined plane part 374 in first, second and

third side

34,35,36, as shown in Figure 8, and its inclined plane part can be the form that expands outwardly or upwards expand outwardly downwards.

In addition, also can be provided with some grooves 373 in this inclined plane part 374, shown in Fig. 9 A, each groove 373 is a V-groove, can also be shown in Fig. 9 B, and each groove 373 is the arcuation groove, and 373 of each grooves can also have gap P.

What deserves to be mentioned is, above each embodiment of the utility model, it all forms several on the side of light guide plate can destroy the groove (including: V-type or arcuation groove) or the inclined plane part in light conduct path, improve the problem that light guide plate side light losing is arranged of practising, make groove or the inclined plane part of light by the side, refrangible is to the exiting surface place, to increase the light source utilization factor.

As mentioned above, the utility model provides the side light type back light module framework another preferable feasible light conducting plate structure, so offer the application of novel patent in accordance with the law; Yet, above implementation and graphic shown in, be the utility model preferred embodiment, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc., identical such as, all should belong to of the present utility model founding within purpose and the claim.

Claims

1, a kind of structural improvement of light guide plate, its light guide plate includes bottom surface that an incidence surface, intersects with this incidence surface, an exiting surface relative with this bottom surface, two and bottom surface and first and second crossing sides of exiting surface at least, and one with the bottom surface and exiting surface is crossing and three side relative with incidence surface; It is characterized in that:

Wherein arbitrary side, this first, second and third side is provided with a group or more groups of slots, and perhaps wherein arbitrary side, this first, second and third side forms inclined plane part.

2, the structural improvement of light guide plate according to claim 1 is characterized in that, wherein arbitrary side, this first, second and third side is provided with first and second group groups of slots, and its first and second group groups of slots is level, vertical direction is arranged.

3, the structural improvement of light guide plate according to claim 1 is characterized in that this first, second and third side wherein appoints two sides to be provided with a group or more groups of slots.

4, the structural improvement of light guide plate according to claim 1 is characterized in that, this first, second and third side wherein appoints two sides to be provided with first and second group groups of slots, and its first and second group groups of slots is level, vertical direction is arranged.

5, the structural improvement of light guide plate according to claim 1 is characterized in that this first, second and third side is equipped with a group or more groups of slots.

6, the structural improvement of light guide plate according to claim 1 is characterized in that, this first, second and third side is equipped with first and second group groups of slots, and its first and second group groups of slots is level, vertical direction is arranged.

7, the structural improvement of light guide plate according to claim 1 is characterized in that, wherein arbitrary side, this first, second and third side is to be to expand outwardly downwards or be the inclined plane part that upwards expands outwardly.

8, the structural improvement of light guide plate according to claim 1 is characterized in that, this first, second and third side wherein appoints two sides to form inclined plane part, and this inclined plane part is and expands outwardly downwards or be the structure that upwards expands outwardly.

9, the structural improvement of light guide plate according to claim 1 is characterized in that this first, second and third side all forms inclined plane part, and this inclined plane part is and expands outwardly downwards or be the structure that upwards expands outwardly.

10, as the structural improvement of light guide plate as described in the claim 1,7,8 or 9, it is characterized in that this inclined plane part is provided with some grooves.