CN203224640U

CN203224640U - Light guide plate with excellent light guiding properties

Info

Publication number: CN203224640U
Application number: CN 201320168838
Authority: CN
Inventors: 钟小雄; 钟莉
Original assignee: FOSHAN XINRONG NEW MATERIAL Co Ltd; CHONGQING LIGHT-TRANSFORM OPTOELECTRONICS Co Ltd
Current assignee: FOSHAN XINRONG NEW MATERIAL Co Ltd; CHONGQING LIGHT-TRANSFORM OPTOELECTRONICS Co Ltd
Priority date: 2013-03-22
Filing date: 2013-03-22
Publication date: 2013-10-02
Anticipated expiration: 2023-03-22

Abstract

The utility model relates to a light guide plate with excellent light guiding properties. The light guide plate is characterized in that the light guide plate is formed by extrusion and calendering of three layers of modified resin; a surface layer of the light guide plate is a light diffusion layer, and the light diffusion layer is a microstructure diffusion layer formed by closely and uniformly arranging a plurality of spheroids; an intermediate layer of the light guide plate is a silkscreen-free light guide layer, and the silkscreen-free light guide layer is also provided with a plurality of light guide particles; and a bottom layer of the light guide plate is a white highly-reflective layer. Compared with a conventional light guide plate formed by combining light guide plate materials with a reflective film/sheet, a prism sheet and a diffusion film/sheet, the light guide plate with excellent light guiding properties can effectively prevent undesirable phenomena such as warping, shadowing and the like caused by poor heat resistance or improper installation of the reflective film/sheet, the prism sheet and the diffusion film/sheet, and light guide plate with excellent light guiding properties also has the advantages of simple structure, excellent light guiding properties, good heat resistance, long service life and the like.

Description

The excellent light guide plate of a kind of leaded light performance

Technical field

The utility model relates to Liquid Crystal Module display device or flat LED lighting device technical field, particularly a kind of new type compound light guide plate for LCDs and flat LED lighting device.

Background technology

At present, in liquid crystal indicator, illumination instrument, lighting advertisement etc., used light guide plate in a large number, existing light conducting plate structure mostly is to extrude dull and stereotyped back at the bottom surface screen print lattice-point, the one side of tradition light guide plate is the smooth flat structure for the lattice point structure another side, its light source utilization factor is low, need use reflectance coating/sheet to come reflection source to improve brightness at the lattice point structure face, also need increase brightness at smooth exiting surface increase rhombus lens, diffusion sheet/plate, improve uniformity of light.And reflectance coating, diffusion barrier, rhombus lens in use often cause bad phenomenon such as shadow because poor heat resistance, installation question cause warpage, and complex process, cost height.

The utility model content

The purpose of this utility model is to address the above problem and is not enough, provides a kind of simple structure, production cost is low, the leaded light performance is excellent, good heat resistance, long service life, can realize the light guide plate of large-scale production.

The technical solution of the utility model is achieved in that

The excellent light guide plate of a kind of leaded light performance, its characteristics are that this light guide plate is formed by three layers of modified resin extrusion calendaring, and the surface layer of described light guide plate is for going out light diffusion layer, and this goes out light diffusion layer several sphericals of serving as reasons and evenly closely arranges the microstructure diffusion layer that forms; The middle layer of described light guide plate is for exempting from the silk-screen optical waveguide layer, and this exempts from also to be provided with in the silk-screen optical waveguide layer several leaded light particulates; The bottom of described light guide plate is white high reflection layer.

Further, describedly go out in the light diffusion layer also to be provided with several light diffusion particles, the described thickness W that goes out light diffusion layer is 0.1-2.0mm, and the described corrugation pitch L that goes out per two adjacent sphericals of light diffusion layer is 0.03-0.5mm, and the height H of each spherical is 0.015-0.1mm.

The utility model is owing to adopted technical scheme noted earlier, it is compared by leaded light sheet material and reflectance coating/sheet, rhombus lens, the diffusion barrier/sheet light guide plate that constitutes that combines with traditional, can avoid relatively poor or install and improperly cause bad phenomenon such as warpage, shadow because of the thermotolerance of reflectance coating/sheet, rhombus lens, diffusion barrier/sheet effectively, and also have advantages such as simple structure, leaded light performance are excellent, good heat resistance, long service life.In addition, product of the present utility model can pass through an extrusion calendaring moulding, and production technology is simple, cost is low, and then can realize large-scale production and apply.

Below in conjunction with accompanying drawing the utility model is further described:

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, the excellent light guide plate of a kind of leaded light performance described in the utility model, this light guide plate 1 is formed by three layers of modified resin extrusion calendaring, add man-hour, three kinds of modified resin are extruded by three single screw extrusion machines respectively, extrude through compound die head is compound then, through being designed to the running roller roll extrusion cooling forming of water chestnut mirror spherical structure.The surface layer of described light guide plate 1 is for going out light diffusion layer 2, and this goes out light diffusion layer 2 several sphericals 21 of serving as reasons and evenly closely arranges the microstructure diffusion layers that form, and this microstructure diffusion layer adopts extrudes the running roller roll forming.The middle layer of described light guide plate 1 is for exempting from silk-screen optical waveguide layer 3, and this exempts from also to be provided with in the silk-screen optical waveguide layer 3 several leaded light particulates 31; The bottom of described light guide plate 1 is white high reflection layer 4.

Light diffusing energy for further optimization light diffusion layer 2, as shown in Figure 1, describedly go out in the light diffusion layer 2 also to be provided with several light diffusion particles 22, each light diffusion particle 22 is evenly arranged in out in the light diffusion layer 2 with random, and described smooth diffusion particle 22 is made by diffusant.

In addition, in order performance and cost aspect to obtain balance rationally, and for example shown in Figure 1, the described thickness W control that goes out light diffusion layer 2 in the 0.1-2.0mm scope for well, and, for well, and the height H of each spherical 21 is controlled in the 0.015-0.1mm scope to well in the 0.03-0.5mm scope in the corrugation pitch L control of the described per two adjacent sphericals 21 that go out light diffusion layer 2.

In like manner, for well, the thickness F of described white high reflection layer 4 is controlled at 0.05-0.3mm in the 2-8mm scope in described thickness E control of exempting from silk-screen optical waveguide layer 3, reflectivity greater than 96% scope for well.

Light guide plate 1 of the present utility model can be by PMMA plastics or PC plastics or extrusion calendaring moulding such as MS plastics or PS plastics.

The concrete application implementation of light guide plate of the present utility model in Liquid Crystal Module display device or flat LED lighting device, basic identical with present existing light guide plate application scheme structure in Liquid Crystal Module display device or flat LED lighting device, belong to the prior art means, be not repeated in this description at this, those skilled in the art can obtain the technological guidance of this respect by consulting the correlation technique documents and materials.

Claims

1. light guide plate that the leaded light performance is excellent, it is characterized in that: this light guide plate (1) is formed by three layers of modified resin extrusion calendaring, the surface layer of described light guide plate (1) is for going out light diffusion layer (2), and this goes out light diffusion layer (2) several sphericals (21) of serving as reasons and evenly closely arranges the microstructure diffusion layer that forms; The middle layer of described light guide plate (1) is for exempting from silk-screen optical waveguide layer (3), and this exempts from also to be provided with in the silk-screen optical waveguide layer (3) several leaded light particulates (31); The bottom of described light guide plate (1) is white high reflection layer (4).

2. according to the excellent light guide plate of the described leaded light performance of claim 1, it is characterized in that: describedly go out in the light diffusion layer (2) also to be provided with several light diffusion particles (22).

3. according to the excellent light guide plate of the described leaded light performance of claim 2, it is characterized in that: the described thickness W that goes out light diffusion layer (2) is 0.1-2.0mm.

4. according to the excellent light guide plate of the described leaded light performance of claim 3, it is characterized in that: the described corrugation pitch L that goes out per two adjacent sphericals (21) of light diffusion layer (2) is 0.03-0.5mm, and the height H of each spherical (21) is 0.015-0.1mm.

5. according to the excellent light guide plate of the described leaded light performance of claim 1, it is characterized in that: the described thickness E of exempting from silk-screen optical waveguide layer (3) is 2-8mm.

6. according to the excellent light guide plate of the described leaded light performance of claim 1, it is characterized in that: the thickness F of described white high reflection layer (4) is 0.05-0.3mm, and reflectivity is greater than 96%.

7. according to the excellent light guide plate of the described leaded light performance of claim 1, it is characterized in that: described light guide plate (1) is by PMMA plastics or PC plastics or MS plastics or the moulding of PS plastics extrusion calendaring.