CN2800320Y

CN2800320Y - Light-gathering sheet of prism

Info

Publication number: CN2800320Y
Application number: CN 200520018634
Authority: CN
Inventors: 庄誌伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-20
Filing date: 2005-05-20
Publication date: 2006-07-26
Anticipated expiration: 2015-05-20

Abstract

The utility model provides a light-gathering sheet of a prism, which comprises base material, a prism layer formed on a surface of the base material, wherein the prism layer is formed by the fact that a plurality of transversal prismatic micro structures and a plurality of vertical prismatic micro structures are combined as a whole through the relationship of cross and array so that the light-gathering sheet has simultaneously transversal and vertical light-gathering functions. In addition, the differences among the apical angles, the height and the shapes of the transversal prismatic micro structures and the vertical prismatic micro structure are utilized to obtain best horizontal and vertical view angles and meet requirements for the view angle specifications of liquid crystal display devices.

Description

The prism concentration piece

One, technical field

The utility model relates to eyeglass, relates in particular to a kind of LCD backlight module that is applied in, and has laterally and directly to light-focusing function, and can obtain meeting the optimization level of visual angle of liquid crystal display specification needs and the prism concentration piece of vertical angle of view.

Two, background technology

Existing LCD, be between liquid crystal panel and light guide plate, to be provided with a slice or two concentration pieces and diffusion sheet, make the emergent light of light guide plate concentrate on the concentration piece top, and optically focused is in the front of liquid crystal panel, to obtain preferable display brightness via diffusion sheet.

Consult shown in Figure 1, it is a kind of structure of existing concentration piece, it comprises: a base material 1 and be formed on the layers of prisms 2 on base material 1 surface, this layers of prisms 2 is made up of with the equidirectional line spread the prismatic microstructure 3 of the section triangle of several strips, the refraction principle of outgoing light-use light is concentrated to each prismatic microstructure top via light guide plate, diffusion sheet, thereby optically focused is in the display front.

In the practical application of concentration piece, concentration piece is in order to the screen brightness of direct raising display, because the congregational rate of emergent light can reduce the visual angle of display relatively, existing concentration piece is because of the structural limitations of its layers of prisms, usually only can meet the level of display or the specification demand of vertical angle of view one, truly have and treat improved space and necessity.

Therefore, how providing a kind of and can have the brightness that increases LCD fully concurrently, and make level and vertical angle of view all reach the prism concentration piece of display specification demand, is design motivation of the present utility model and design focal point.

Three, utility model content

Fundamental purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and a kind of prism concentration piece is provided, and it has laterally and simultaneously directly to light-focusing function, and can be beneficial to level and vertical angle of view be controlled at and meet visual angle of liquid crystal display specification demand.

The purpose of this utility model is realized by following technical scheme.

The utility model prism concentration piece comprises a base material and is formed on the layers of prisms of substrate surface; It is characterized in that, described layers of prisms by several horizontal prismatic microstructures and several directly to the prismatic microstructure, combined integrated and constitute with the Rankine-Hugoniot relations that crosses one another.

Aforesaid prism concentration piece, wherein prismatic microstructure inclined-plane is an arc surface.

Aforesaid prism concentration piece, wherein the top of prismatic microstructure or bottom are arc chord angle.

Aforesaid prism concentration piece, wherein the root edge spacing of prismatic microstructure is zero or zero above value.

Aforesaid prism concentration piece, wherein the drift angle of prismatic microstructure is that 1 degree is to the angle between 179 degree.

Aforesaid prism concentration piece, the wherein height of the height of prismatic microstructure for upwards protruding out along base-plates surface.

Aforesaid prism concentration piece, wherein the mutual intersecting angle of prismatic microstructure is that 1 degree is to the angle between 179 degree.

Aforesaid prism concentration piece, the wherein orientation of prismatic microstructure with respect to the concentration piece profile, is that 1 degree is to the angle between 179 degree.

Aforesaid prism concentration piece, wherein the layers of prisms of concentration piece is that material identical or inequality constitutes with base material.

Aforesaid prism concentration piece, wherein the concentration piece bottom is formed with the emergent light diffusion structure, and this diffusion structure is direct compression molding, or the coating diffusion material is one-body molded in the concentration piece bottom.

Aforesaid prism concentration piece, wherein concentration piece comprises the unitized construction of monolithic, multi-disc, the superimposed one of multi-disc.

The beneficial effects of the utility model are, because concentration piece influences the drift angle and height of the principal element of display viewing angles for its prismatic microstructure, therefore, when concentration piece laterally with directly to the drift angle of two prismatic microstructures, highly with shape when identical, the horizontal view angle of display is also identical with the vertical angle of view, and drift angle, height and shape are not simultaneously, and the visual angle of display also changes thereupon.Based on above-mentioned phenomenon, the technical scheme that prism concentration piece of the present utility model adopts is, comprise a base material and be formed on the layers of prisms of substrate surface, this layers of prisms directly is to the prismatic microstructure with several by several horizontal prismatic microstructures and intersects the permutation and combination one and constitute, like this, can make the prism concentration piece have simultaneously laterally with directly to light-focusing function, and by this laterally with directly to differences such as drift angles of two prismatic microstructures, height and shapes, obtain optimized level and vertical angle of view, reach the visual angle specification demand of LCD.

Four, description of drawings

Fig. 1 is existing concentration piece structural representation.

Fig. 2 is the utility model first embodiment perspective view.

Fig. 3 is the utility model first embodiment spatial structure schematic top plan view.

Fig. 4 is the utility model first embodiment partial structurtes enlarged diagram.

Fig. 5 looks squarely synoptic diagram for the utility model first embodiment end face structure.

Fig. 6 is the synoptic diagram of differing heights to the prismatic microstructure laterally and directly for the utility model.

Fig. 7 looks squarely synoptic diagram for end face shown in Figure 6.

Fig. 8 looks squarely synoptic diagram for the end face that the utility model prismatic microstructure drift angle can be different angles.

Fig. 9 looks squarely synoptic diagram for the end face of the utility model prismatic microstructure inclined-plane arc surface.

Figure 10 implements the state end face for the utility model prism concentration piece and looks squarely synoptic diagram.

Figure 11 looks squarely synoptic diagram for the end face that the utility model prism concentration piece bottom has diffusion function.

But Figure 12 is the utility model prism concentration piece stacked combination user mode synoptic diagram.

Figure 13 is another orientation synoptic diagram of prismatic microstructure of the utility model prism concentration piece.

The number in the figure explanation:

Prior art part: 1 base material, 2 layers of prisms, 3 prismatic microstructures;

The utility model: 10 prism concentration pieces, 11 base materials, 12 layers of prisms, 13 horizontal prismatic microstructures, 13a inclined-plane, 13b inclined-plane, 14 directly to prismatic microstructure, 14a inclined-plane, 14b inclined-plane, D intersecting angle, E drift angle angle, F prismatic microstructure root edge spacing, the horizontal prismatic microstructure height of h, h ' directly to prismatic microstructure height, R arc chord angle, 15 arc surfaces, 20 compression moldings, 21 diffusion materials.

Five, embodiment

Consult Fig. 2, shown in Figure 3, be first embodiment of the present utility model, its prism concentration piece 10, comprise a base material 11 and be formed on the layers of prisms 12 of substrate surface that it is combined integrated and constitute that this layers of prisms 12 directly is the Rankine-Hugoniot relations that crosses one another to prismatic microstructure 14 by several horizontal prismatic microstructures 13 and several.

Above-mentioned horizontal prismatic microstructure 13 be preferable with the right angle directly to two prismatic microstructures, 14 cross one another angle D, also can be 1 degree arbitrarily angled between 179 degree; Consult Fig. 4, shown in Figure 5, the

prismatic microstructure

13 and 14 of forming layers of prisms is along the section triangle of crest line both sides, top configuration by inclined-

plane

13a, 13b, 14a, 14b, make whole layers of prisms in each

prismatic microstructure

13,14 between adjacent four infalls, all be formed with a base cone shape light focusing unit of forming by four triangular ramps, make prism concentration piece 10 of the present utility model have simultaneously laterally with directly to light-focusing function.

Owing to the horizontal view angle of LCD can change with the different of shape along with drift angle, the height of prismatic microstructure with the vertical angle of view, therefore, as Fig. 6, shown in Figure 7, the utility model can make horizontal and straight height h, the h ' to two

prismatic microstructures

13,14 of layers of prisms, according to the specification demand of display viewing angles, form along the make progress value any identical or inequality of projection of base-plates surface; Perhaps, as shown in Figure 8, what make layers of prisms laterally with directly can be 1 to 179 angle any identical or inequality between spending to the drift angle of two

prismatic microstructures

13,14, obtains optimized level and vertical angle of view in view of the above simultaneously.

In above-mentioned preferred embodiment, the prismatic microstructure of forming layers of prisms, it is along the inclined-plane of crest line both sides, top configuration, also can select to use the inclined-plane of other geometric configuratioies, cooperation is consulted shown in Figure 9, wherein the inclined-plane of this

prismatic microstructure

13,14 can form the arc surface 15 of concave or convex, with the light-receiving area and the range of refractive of each

prismatic microstructure

13,14 of further expansion; Moreover, as Fig. 2, shown in Figure 3, the horizontal and straight orientation to

prismatic microstructure

13,14 on the concentration piece 10 is with respect to the concentration piece profile, also can be shown in Figure 13 between laterally with directly between arbitrarily angled, with the demand of cooperation display to various different directions visual angle specification.

Consult shown in Figure 10, the prism concentration piece in the preferred embodiment, its layers of prisms 12 can be that same material or material inequality constitute one with base material 11; Root edge spacing F between the

prismatic microstructure

13,14 can be zero or zero above numerical value any identical or inequality, and the top and bottom of each prismatic microstructure can constitute arc chord angle R.

Because adopting integrated method to reduce cost is a kind of trend, therefore, as shown in figure 11, the utility model prism concentration piece 10 bottoms can utilize direct compression molding 20, perhaps adopt the mode of coating diffusion material 21 one-body molded in the concentration piece bottom, make concentration piece have emergent light diffusion structure and function, the design of this diffusion structure can be according to general common convex lens principle or other existing diffusion technique, owing to being prior art, so give unnecessary details no longer in detail at this.

By above-mentioned each preferred embodiment explanation, prism concentration piece 10 of the present utility model as can be known, its major technique characteristics are, utilize layers of prisms 12 horizontal, that directly form to 13,14 cross arrangements of prismatic microstructure, can have simultaneously laterally with directly to light-focusing function, and then can utilize control this laterally, directly to drift angle of prismatic micro-architecture, height difference with shape, obtain the effect of optimized level and vertical angle of view; Therefore, the one-piece construction of the utility model prism concentration piece 10, under the condition of structure condition that does not break away from its layers of prisms and essence application, except can being the monolithic user mode described in aforementioned each preferred embodiment, also can also two (or more than two) prism concentration pieces 10 can be carried out overlapping or superimposed one and use as shown in figure 12.

In summary, prism concentration piece of the present utility model can reach design purpose really, it not only can be used for the industrialized implementation of new product, the more important thing is that it can effectively overcome the defective that existing concentration piece can't satisfy most of LCD level and vertical angle of view specification demand; In addition, technical characterstic of the present utility model had not seen preceding the disclosing of application yet, therefore had novelty and creativeness, so file an application in accordance with the law.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of prism concentration piece comprises a base material and is formed on the layers of prisms of substrate surface; It is characterized in that, described layers of prisms by several horizontal prismatic microstructures and several directly to the prismatic microstructure, combined integrated and constitute with the Rankine-Hugoniot relations that crosses one another.

2, prism concentration piece according to claim 1 is characterized in that, described prismatic microstructure inclined-plane is an arc surface.

3, prism concentration piece according to claim 1 is characterized in that, the top of described prismatic microstructure or bottom are arc chord angle.

4, prism concentration piece according to claim 1 is characterized in that, the root edge spacing of described prismatic microstructure is zero or zero above value.

5, prism concentration piece according to claim 1 is characterized in that, the drift angle of described prismatic microstructure is that 1 degree is to the angle between 179 degree.

6, prism concentration piece according to claim 1 is characterized in that, the height of the height of described prismatic microstructure for upwards protruding out along base-plates surface.

7, prism concentration piece according to claim 1 is characterized in that, the mutual intersecting angle of described prismatic microstructure is that 1 degree is to the angle between 179 degree.

8, prism concentration piece according to claim 1 is characterized in that, the orientation of described prismatic microstructure with respect to the concentration piece profile, is that 1 degree is to the angle between 179 degree.

9, prism concentration piece according to claim 1 is characterized in that, the layers of prisms of described concentration piece is that material identical or inequality constitutes with base material.

10, prism concentration piece according to claim 1 is characterized in that, described concentration piece bottom is formed with the emergent light diffusion structure, and this diffusion structure is direct compression molding, or the coating diffusion material is one-body molded in the concentration piece bottom.

11, prism concentration piece according to claim 1 is characterized in that, described concentration piece comprises the unitized construction of monolithic, multi-disc, the superimposed one of multi-disc.