CN102261619A

CN102261619A - Improved structure of light transmissible plate

Info

Publication number: CN102261619A
Application number: CN2010101819619A
Authority: CN
Inventors: 闫守广
Original assignee: Mitac Computer Kunshan Co Ltd
Current assignee: Mitac Computer Kunshan Co Ltd
Priority date: 2010-05-25
Filing date: 2010-05-25
Publication date: 2011-11-30

Abstract

An improved structure of a light transmissible plate is applied to a direct type backlight module. The improved structure of the light transmissible plate comprises a light incident surface and a light emergent surface corresponding to the light incident surface, wherein a light source is arranged on the lower side of the light incident surface; a plurality of groove arrays are formed on the light incident surface; and the groove arrays are groove arrays including continuous cambered grooves or cambered grooves combined with V-shaped grooves. The improved structure of the light transmissible plate of the invention is capable of dispersing the light source, thereby achieving even light distribution effect and effectively solving the hotspot phenomenon.

Description

The light-passing board structure-improved

[technical field]

The present invention relates to a kind of structure of light-passing board, be specifically related to a kind of light-passing board structure-improved that is used for down straight aphototropism mode set.

[background technology]

Liquid crystal indicator often uses the light emitting source of light emitting diode as down straight aphototropism mode set at present, and light-passing board is the communication media of light source, can accept light source, guiding scattering of light direction.See also shown in Figure 1, it illustrates the schematic diagram of the lamp bar that light emitting diode makes, the light-emitting area of light emitting diode 1 is all elongated or square framework substantially, the lamp bar 10 that use light emitting diode 1 is made is because frame for movement and electrode framework, can form intermittently as the light-emitting area as the dotted line, and light emitting diode 1 presents the optical field distribution of Lambertian (lambert's body) substantially, has stronger luminous intensity at forward, this luminous framework can cause the phenomenon of the viewing area luminance nonuniformity of contiguous lamp bar to take place, and this phenomenon is called focus (Hot Spot).

In view of this, be necessary to develop a kind of light-passing board structure-improved in fact, this light-passing board structure-improved can make light source disperse, and the effect that achieves an even light distribution efficiently solves hot spot phenomenon.

[summary of the invention]

Therefore, the purpose of this invention is to provide a kind of light-passing board structure-improved, this light-passing board structure-improved can make light source disperse the effect that achieves an even light distribution.

In order to achieve the above object, light-passing board structure-improved of the present invention, be applied in the down straight aphototropism mode set, this light-passing board structure-improved comprises: an incidence surface reaches and the corresponding exiting surface of this incidence surface, and light emitting diode is arranged at downside that should incidence surface, this incidence surface is provided with several groove arrays, and this groove array is the groove array that continuous arc groove or arc groove combine with v-depression.

Compared to prior art, light-passing board structure-improved of the present invention can make light source disperse, and the effect that achieves an even light distribution efficiently solves hot spot phenomenon.

[description of drawings]

Fig. 1 illustrates the schematic diagram of the lamp bar of being made by light emitting diode.

Fig. 2 illustrates the structure improved floor map of first embodiment of the invention light-passing board.

Fig. 3 illustrates the light path schematic diagram of first embodiment of the invention incident light.

Fig. 4 illustrates the structure improved floor map of second embodiment of the invention light-passing board.

[specific embodiment]

See also shown in Figure 2ly, it illustrates the structure improved floor map of first embodiment of the invention light-passing board.

Light-passing board structure-improved of the present invention, be applied in the down straight aphototropism mode set, this down straight aphototropism mode set comprises in order: reflecting element, light emitting source, light-passing board, blooming piece, in first embodiment, this light-passing board structure-improved 20 comprises: an incidence surface 21 reaches and the corresponding exiting surface 22 of this incidence surface, and light emitting source light emitting diode 30 is arranged at the downside of this incidence surface 21, this incidence surface 21 is provided with several groove arrays according to the linear distribution of light emitting diode 30, this groove array continuous distributed is on above-mentioned incidence surface 21, and this groove array is continuous arc groove 210 arrays.

See also shown in Figure 3ly, it illustrates the light path schematic diagram of first embodiment of the invention incident light.Because of light emitting diode 30 is a spot light, after spot light 301 emits beam, light shines directly on the light-passing board structure-improved 20, because the incidence surface 21 of light-passing board structure-improved 20 is continuous arc groove 210 concave surfaces, with the prior art light-passing board plane of incidence is that the incident light on plane 102 is compared, this incident light spreads more because of more leveling off to the normal of the plane of incidence 21, thereby the effect that achieves an even light distribution efficiently solves hot spot phenomenon.

See also shown in Figure 4ly, it illustrates the structure improved floor map of second embodiment of the invention light-passing board.In second embodiment, this light-passing board structure-improved 20 comprises: an incidence surface 21 reaches and these incidence surface 21 corresponding exiting surfaces 22, and light emitting source light emitting diode 30 is arranged at the downside of this incidence surface 21, this incidence surface 21 is provided with several groove arrays according to the linear distribution of light emitting diode, this groove array continuous distributed is on above-mentioned incidence surface 21, and this groove array is the groove array that arc groove 210 combines with v-depression 211.This second embodiment is the same with the principle of above-mentioned first embodiment, after light emitting diode 30 emits beam, light shines directly on the light-passing board structure-improved 20, because the concave surface that the incidence surface 21 of light-passing board structure-improved 20 combines with v-depression 211 for arc groove 210, with the prior art light-passing board plane of incidence is that the incident light on plane is compared, this incident light spreads more because of more leveling off to the normal of the plane of incidence 21, thereby the effect that achieves an even light distribution efficiently solves hot spot phenomenon.

Claims

1. light-passing board structure-improved, be applied in the down straight aphototropism mode set, it is characterized in that, this light-passing board structure-improved comprises that an incidence surface reaches and the corresponding exiting surface of this incidence surface, and the light emitting source light emitting diode is arranged at the downside of this incidence surface, this incidence surface is provided with several groove arrays, and this groove array is the groove array that continuous arc groove or arc groove combine with v-depression.