CN202710777U

CN202710777U - Light guide plate

Info

Publication number: CN202710777U
Application number: CN 201220305290
Authority: CN
Inventors: 左启群; 贾笑辉
Original assignee: SUZHOU JIAHONG PHOTOELECTRICITY CO Ltd
Current assignee: SUZHOU JIAHONG PHOTOELECTRICITY CO Ltd
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2013-01-30
Anticipated expiration: 2022-06-28

Abstract

The utility model discloses a light guide plate. The light guide plate includes a base material. A net-dot group is arranged on the base material, wherein the net-dots which are close to the light source are small, and the net-dots which are away from the light source are big; the space between neighboring net-dots which are close to the light source is large, and the space between neighboring net-dots which are away from the light source is small; the density of the net-dots which are close to the light source is about 150000 to 200000/square meter, and the density of the net-dots which are away from the light source is about 200000 to 250000/square meter. On the light guide plate of the utility model, the net-dots which are close to the light source are small and sparse, and the net-dots which are away from the light source are big and dense; the bigger and denser the net-dots are, the luminance of the net-dots is higher, and the smaller and sparser the net-dots are, the luminance of the net-dots is lower, so the short edge single side light incidence technology can be adopted, so that the number of used light emitting diodes LED is reduced, and the cost is reduced.

Description

A kind of light guide plate

Technical field

The utility model relates to a kind of light guide plate, and a kind of light guide plate from the minor face single-sided illumination that reduces the LED use amount, reduces cost particularly belongs to the component technology field of filming apparatus.

Background technology

The light guide plate design concept comes from the LCDs of notebook computer, is the high-tech product that line source is changed into area source.Be base material with optical grade acryl (PMMA)/PC, use the back light model setting technology of LCD display and notebook computer, see through the high light line conductivity of site (light guiding points), through computer site (light guiding points) calculated, make the light guide plate light refraction become the equal light state of area source to make moulding.Product adopts spectrophotometry to combine with digital UV printing technology and is made under constant temperature, constant humidity, dustless environmental baseline, have that ultra-thin, superbright, leaded light are even, energy-saving and environmental protection, no dark space, durable, be difficult for the advantages such as yellow, installation and maintenance simple and fast; Common light guide plate is used long limit single-sided illumination, and such light guide plate need to be used more LED, thereby cost is higher.

The utility model content

The utility model purpose is that a kind of light guide plate from the minor face single-sided illumination that reduces the LED use amount, reduces cost is provided in order to overcome the deficiencies in the prior art.

For achieving the above object, the technical solution adopted in the utility model is: a kind of light guide plate comprises base material; Be provided with the site group on the described base material, little near the site at light source place; Large away from site, light source place.

Preferably, the interval of the adjacent site at described close light source place is large; The interval of described adjacent site away from the light source place is little.

Preferably, the density near site, light source place is about 150000 to 200000/square metre; Density away from site, light source place is about 200000 to 250000/square metre.

Because the utilization of technique scheme, the utility model compared with prior art has following advantages:

On the light guide plate described in the utility model, little and sparse near the site at light source place, large and intensive away from the site at light source place; Because more large more intensive site, its briliancy is higher, and more little more sparse site, its briliancy is lower, therefore can adopt the minor face single-sided illumination, and then has reduced the usage quantity of LED, thereby reduces cost.

Description of drawings

Below in conjunction with accompanying drawing technical solutions of the utility model are described further:

Accompanying drawing 1 is the propagation path of light schematic diagram of light guide plate of the present utility model;

Accompanying drawing 2 is that the site of light guide plate of the present utility model is at the distribution plan at close light source place;

Accompanying drawing 3 is that the site of light guide plate of the present utility model is at the distribution plan away from the light source place;

Wherein: 1, site; 2, cold-cathode tube; 3, acrylic; 4, diffusion sheet; 5, prismatic lens; 6, reflector plate.

Embodiment

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Shown in accompanying drawing 2,3, light guide plate of the present utility model comprises base material; Be provided with the site group on the described base material, little near the site 1 at light source place; Large away from site 1, light source place; Described base material is acrylic 3.The interval of the adjacent site 1 at described close light source place is large; The interval of described adjacent site 1 away from the light source place is little; Described density near site, light source place 1 is about 150000/square metre; Described density away from site, light source place 1 is about 200000/square metre.

As shown in Figure 1, the application example of light guide plate described in the utility model comprises cold-cathode tube 2, acrylic 3, diffusion sheet 4, prismatic lens 5, reflector plate 6, and described cold-cathode tube 2 is arranged on the minor face place of acrylic 3; Described diffusion sheet 4 is arranged on the top of acrylic 3; Described prismatic lens 5 is arranged on the top of diffusion sheet 4; Described reflector plate 6 is arranged on the below of acrylic 3; The lower surface of described acrylic 3 is printed with the site group; Less in the site 1 near described cold-cathode tube 2 places, and comparatively sparse, and density is about 150000/square metre; Larger away from the site 1 at described cold-cathode tube 2 places, and comparatively intensive, and density is about 200000/square metre.

As shown in Figure 1, when cold-cathode tube 2 was luminous, light entered in the acrylic 3, and a part of light passes the upper surface of acrylic 3 and produces refracted rays and spread out of through diffusion sheet 4, prismatic lens 5; Another part light produces reflection ray by site 1 or the reflector plate 6 of acrylic 3 lower surfaces, and the upper surface from acrylic 3 spreads out of again.

Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the utility model rights protection scope.

Claims

1. a light guide plate comprises base material; Be provided with the site group on the described base material, it is characterized in that: the site (1) near the light source place is little; Large away from site, light source place (1).

2. described light guide plate according to claim 1 is characterized in that: the interval of described adjacent site (1) near the light source place is large; The interval of described adjacent site (1) away from the light source place is little.

3. according to claim 2 described light guide plate, it is characterized in that: the density near light source place site (1) is about 150000 to 200000/square metre; Density away from site, light source place (1) is about 200000 to 250000/square metre.