CN201007745Y

CN201007745Y - Inner scattering ultrathin light guide plate

Info

Publication number: CN201007745Y
Application number: CNU2007200007078U
Authority: CN
Inventors: 郭仲裕
Original assignee: Pontex Polyblend Co Ltd
Current assignee: Pontex Polyblend Co Ltd
Priority date: 2007-01-10
Filing date: 2007-01-10
Publication date: 2008-01-16
Anticipated expiration: 2017-01-10

Abstract

The utility model discloses an internal scattering ultra-thin light guide plate, which includes a light guide body, wherein a plurality of light guide particles having a refractive index greater than that of the light guide body are arranged inside the light guide body, so that a highly uniform surface light source can be generated after light is incident; in addition, the upper and lower sides of the light guide body can be respectively provided with a plurality of first V-shaped grooves and a plurality of second V-shaped grooves that intersect axially at approximately right angles, so as to enhance the central brightness of the light guide plate through the V-shaped structure of the plurality of first V-shaped grooves and the plurality of second V-shaped grooves; therefore, the light guide plate of the utility model can combine these two light guiding effects, so as to generate a surface light source with a relatively high and uniform central brightness, which can make the light guide plate of the utility model easy to be thinned, and can adopt light-emitting diodes as light sources, so as to be used as display light sources of liquid crystal displays, so as to have the advantages of being light and thin and energy-saving.

Description

The inscattering ultra-thin light guide board

Technical field

The utility model relates to a kind of light guide plate, especially relates to the light guide plate of slimming.

Background technology

LCD (Liquid crystal displayer; LCD) need backlight module (Backlight module) so that required display light source to be provided, backlight module comprises light source (Lightsource), light guide plate (Light guide plate), scattering film (Diffuser), prismatic lens (Prismsheet), reflecting plate (reflector) etc., wherein mainly be the light source that is pointolite or line source originally to be converted to area source by light guide plate, its purpose is to provide the center briliancy higher and uniform surface light source, with the display light source as LCD.

In order to provide the center briliancy higher and uniform surface light source, design has the microstructure of optics of all kinds site on the light guide plate, its purpose is light source is done the scattering and the guiding of appropriateness, improve the homogeneity of display light source on the one hand, increase the utilization ratio of light source on the other hand and promote the center briliancy, to provide LCD required display light source.

Aspect the LCD of mobile computer, with white light LEDs as light source, have frivolous and advantage power saving, compare with traditional CCFL backlight, LED-backlit source mobile computer plate thickness is about below half of CCFL backlight mobile computer plate thickness, aspect energy-conservation, the also comparable CCFL backlight of LED-backlit source mobile computer panel mobile computer panel is saved about 20%～30% electric power, how focusing on the thickness slimming of LED mobile computer backlight module exploitation at present, it is maximum to hinder for how original thickness is slim the turning to below the 0.8mm of light guide plate of 2mm.

In general, the briliancy of LCD and uniformity coefficient are all reached by the optics site design of light guide plate, and the thickness of light guide plate is thinner, its optics site design is difficult more, therefore development time is long more, need find out a kind of material, and itself characteristic can allow light source through repeatedly scattering-in, light requirement is not learned the site design and promptly can self be formed required uniformity coefficient, and can not reduce the utilization ratio of light source, even add specific V-type groove optically focused angle, can further improve the optics briliancy.

The utility model content

It is a kind of slim and uniform luminance and the higher light guide plate of center briliancy can be provided that fundamental purpose of the present utility model is to provide, so that LCD can adopt light emitting diode as display light source, and has frivolous and advantage power saving.

The utility model is a kind of inscattering ultra-thin light guide board, it comprises light guide body, this light guide body inside is provided with the leaded light particle of a plurality of refractive indexes greater than this light guide body, the upper and lower sides of this light guide body is respectively equipped with a plurality of first V-type grooves and a plurality of second V-type groove, and these a plurality of first V-type grooves intersect with the axially approximately rectangular of these a plurality of second V-type grooves.In addition, it can directly one-body molded upper and lower sides in this light guide body, perhaps at the upper and lower sides of this light guide body fit respectively first light-guide device and second light-guide device, on this first light-guide device and this second light-guide device, to form this a plurality of first V-type grooves and these a plurality of second V-type grooves.

Therefore, adopt light guide plate of the present utility model, by the inscattering effect of the inner leaded light particle of this light guide body, thereby the uniformity coefficient that tool is quite high, utilize the V-structure of upper and lower sides simultaneously, can improve light guide plate center briliancy, thereby can produce the higher and uniform surface light source of center briliancy.

Description of drawings

Fig. 1-the 1st, the outside drawing of inscattering ultra-thin light guide board of the present utility model;

Fig. 1-2 is the cut-open view along A-A line among Fig. 1-1 of inscattering ultra-thin light guide board of the present utility model;

Fig. 2 is the synoptic diagram in conjunction with light source of inscattering ultra-thin light guide board of the present utility model;

Fig. 3 is the size synoptic diagram of the V-type salient point of inscattering ultra-thin light guide board of the present utility model;

Fig. 4 is the outside drawing of another embodiment of the utility model; And

Fig. 5 is the synoptic diagram in conjunction with light source of another embodiment of the utility model.

Embodiment

In order further to understand feature of the present utility model, purpose and effect, now enumerate preferred embodiment and conjunction with figs. is described as follows:

Please refer to Fig. 1-1 with shown in Fig. 1-2, the inscattering ultra-thin light guide board of present embodiment comprises light guide body 10A, first light-guide device 20 and second light-guide device 30, wherein this light guide body 10A inside is provided with the leaded light particle 11 of a plurality of refractive indexes greater than this light guide body 10A, and this first light-guide device 20 is arranged on the side of this light guide body 10A, on the surface of this first light-guide device 20, be formed with a plurality of first V-type grooves 21, in addition, this second light-guide device 30 is arranged on the opposite side of this light guide body 10A, on these second light-guide device, 30 surfaces, also be provided with a plurality of second V-type grooves 31, and these a plurality of first V-type grooves 21 intersect with the axially approximately rectangular of these a plurality of second V-type grooves 31.

In addition, please refer to Fig. 2 and Fig. 3, the transverse sides of this light guide body 10A is that light is gone into side 12A, this light is gone into side 12A can be at least one light emitting diode 40 is set, and it is parallel that these a plurality of first V-type grooves 21 and this light are gone into side 12A, and these a plurality of first V-type grooves 21 are formed with a plurality of juts 50 on this first light-guide device 20, this jut 50 has first inclined-plane 51 and second inclined-plane 52 that is positioned at both sides, and side 12A is gone into than these second inclined-plane, 52 more close these light in this first inclined-plane 51, in addition, the length on this first inclined-plane 51 can be greater than this second inclined-plane 52 (promptly the gradient elevation angle on first inclined-plane 51 be less than the gradient elevation angle on this second inclined-plane 52), simultaneously the included angle A on this first inclined-plane 51 and second inclined-plane 52 between 90 spend between 110 degree for suitably.

Therefore, when light emitting diode 40 is launched light, it can pass through the inscattering of the leaded light particle 11 of this light guide body 10A inside, thereby the quite high uniformity coefficient of tool, simultaneously by a plurality of first V-type grooves 21 of upper and lower sides and the V-structure of a plurality of second V-type grooves 31, can improve light guide plate center briliancy, what deserves to be mentioned is herein, as shown in Figure 3, when a plurality of first V-type grooves 21 of the present utility model form these juts 50, and when allowing the length on first inclined-plane 51 of this jut 50 greater than second inclined-plane 52, it can cooperate the incident direction of light and allow the light that is guided be more prone to vertical ejaculation, that is, can increase the service efficiency of light.

In addition, referring again to Fig. 4 and shown in Figure 5, it is another embodiment of the present utility model, it comprises light guide body 10B, this light guide body 10B inside is provided with the leaded light particle 11 of a plurality of refractive indexes greater than this light guide body 10B, and the side of this light guide body 10B is one-body molded a plurality of first V-type grooves 13, and the opposite side of this light guide body 10B is then one-body molded a plurality of second V-type grooves 14, and these a plurality of first V-type grooves 13 and this a plurality of second V-type grooves 14 is axially roughly at right angles crossing.

Equally, in the present embodiment, the transverse sides of this light guide body 10B is that light is gone into side 12B, this light is gone into side 12B and is used to be provided with at least one light emitting diode 40, and it is parallel that these a plurality of first V-type grooves 13 and this light are gone into side 12B, and these a plurality of first V-type grooves 13 also are formed with a plurality of juts 60 on this light guide body 10B, this jut 60 has first inclined-plane 61 and second inclined-plane 62 that is positioned at both sides, and side 12B is gone into than these second inclined-plane, 62 more close these light in this first inclined-plane 61, the length on this first inclined-plane 61 can be greater than this second inclined-plane 62 (promptly the gradient elevation angle on first inclined-plane 61 be less than the gradient elevation angle on this second inclined-plane 62) in addition, and the angle on this first inclined-plane 61 and second inclined-plane 62 is also spent between 110 degree between 90.

Therefore, in the present embodiment, the light guide effect that not only has previous embodiment, also because the optical interface (between the light guide body 10A and first light-guide device 20, second light-guide device 30) that does not have previous embodiment to produce because of applying, therefore can further reduce the reflection and the loss of light, thereby improve the utilization ratio of light source once more.

As mentioned above, the utility model is by this light guide body 10A, the inscattering effect of the leaded light particle 11 of 10B inside, can not reduce the utilization ratio of light source, and light requirement is not learned the site design and promptly can self be formed the area source that generation has quite high uniformity coefficient, therefore the utility model slimming easily, and the light source of the light emitting diode 40 of can arranging in pairs or groups uses, the utility model utilizes the V-structure of upper and lower sides simultaneously, further improved light guide plate center briliancy, thereby can produce the higher and uniform surface light source of center briliancy, it is as the display light source of LCD, thereby can allow the LCD that adopts have frivolous and advantage power saving.

The above is a preferred embodiment of the present utility model only, is not limited to the utility model.In the above-described embodiments, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. A kind of internal scattering ultra-thin light guide plate, it is characterized in that, comprising:

A light guide body (10A, 10B), the light guide body (10A, 10B) is provided with a plurality of light guide particles (11) with a higher refractive index than the light guide body (10A, 10B), and the light guide body The upper and lower sides of (10A, 10B) are respectively provided with a plurality of first V-shaped grooves (13, 21) and a plurality of second V-shaped grooves (14, 31), and the plurality of first V-shaped grooves (13, 21) 21) Intersecting the axial directions of the plurality of second V-shaped grooves (14, 31) approximately at right angles.

2. The inner scattering ultra-thin light guide plate according to claim 1, further comprising a first light guide element (20) and a second light guide element (30), the first light guide element (20) It is arranged on one side of the light guide body (10A), the first light guide element (20) is formed with the plurality of first V-shaped grooves (21) on the surface, and the second light guide element ( 30) It is arranged on the other side of the light guiding body (10A), and the plurality of second V-shaped grooves (31) are formed on the surface of the second light guiding element (30).

3. The internal scattering ultra-thin light guide plate according to claim 2, characterized in that, the lateral side of the light guide body (10A) is a light-incoming side (12A), and the plurality of first V-shaped grooves (21) parallel to the light-incoming side surface (12A), and the plurality of first V-shaped grooves (21) are formed with a plurality of protrusions (50) on the first light guide element (20), so The protrusion (50) has a first slope (51) and a second slope (52) on both sides, and the first slope (51) is closer to the light entrance side than the second slope (52) (12A), and the length of the first slope (51) is greater than that of the second slope (52).

4. The inner scattering ultra-thin light guide plate according to claim 3, characterized in that, the angle (A) between the first slope (51) and the second slope (52) is between 90 degrees and 110 degrees between.

5. The internal scattering ultra-thin light guide plate according to claim 3, characterized in that, the light-incoming side surface (12A) is used for setting at least one light emitting diode (40).

6. The internal scattering ultra-thin light guide plate according to claim 1, characterized in that, the plurality of first V-shaped grooves (13) are integrally formed on one side of the light guide body (10B), the The other side of the light guide body (10B) is also integrally formed with the plurality of second V-shaped grooves (14).

7. The internal scattering ultra-thin light guide plate according to claim 6, characterized in that, the lateral side of the light guide body (10B) is a light-incoming side (12B), and the plurality of first V-shaped grooves (13) parallel to the light incident side (12B), and the plurality of first V-shaped grooves (13) are formed with a plurality of protrusions (60) on the light guide body (10B), the protrusions The portion (60) has a first slope (61) and a second slope (62) on both sides, and the first slope (61) is closer to the light-incoming side (12B) than the second slope (62) ), and the length of the first slope (61) is greater than that of the second slope (62).

8. The internal scattering ultra-thin light guide plate according to claim 7, characterized in that, the included angle between the first slope (61) and the second slope (62) is between 90 degrees and 110 degrees.

9. The internal scattering ultra-thin light guide plate according to claim 7, characterized in that, the light-incoming side surface (12B) is used for setting at least one light emitting diode (40).