WO2012031451A1

WO2012031451A1 - Light guide plate manufactured by employing offset printing and manufacturing method thereof

Info

Publication number: WO2012031451A1
Application number: PCT/CN2011/001434
Authority: WO
Inventors: 刘锡
Original assignee: 深圳安嵘光电产品有限公司
Priority date: 2010-09-10
Filing date: 2011-08-26
Publication date: 2012-03-15
Also published as: CN101950042A

Abstract

A light guide plate (1) manufactured by employing offset printing and a manufacturing method thereof. One side of the light guide plate (1) is provided with light guide screen dots (2, 3) of different shapes, different sizes, or different densities by employing offset printing. The light guide screen dots (2, 3) combine to form different patterns and texts. Offset printing may be employed again on top of parts of the light guide screen dots (2, 3) of the light guide plate (1), forming large and thick light guide screen dots (2, 3) through an overlapping arrangement. The light guide plate (1) of the present invention can solve the glare problem without using diffusive, reflective materials, and enables direct emission of light, thereby reducing power consumption, improving light efficiency, reducing costs and resulting in wide use.

Description

Light guide plate made by offset printing method and manufacturing method thereof

The present invention relates to a light-conducting device, and more particularly to a light guide plate made of an offset printing method suitable for various types of lighting, art lighting and decorative lighting, decorative materials, window, cabinet rejection, display stand, etc. and manufacturing method thereof . Background technique

The design principle of the light guide plate is derived from the liquid crystal display of the notebook computer. The light guide plate uses fluorescent lamps,

The CCFL and the LED light source convert the line light source or the point light source into a surface light source through the light guiding point or the light guiding groove calculated by the optical principle, under the action of the reflective film (reflecting plate) and the diffusion film. In order to make the light guide plate emit light uniformly, it is necessary to pass various light-tight and different-sized light guiding points to ensure that the light is reflected in all directions with the same efficiency. The purpose of the reflective sheet (reflector) is to reflect the light emitted from the bottom surface of the light guide back into the light guide plate to improve the efficiency of light use and increase the brightness. The role of the diffuser film is to make the light more uniform and softer. Light guides are used in a wide range of applications, such as TV backlights, lighting, decoration, advertising, signage, and more. The dot design of the existing light guide plate is full layout, monotonous and non-variable, and the shape does not change much. Summary of the invention

In order to solve the technical problem that the dot design of the existing light guide plate is full layout, monotonous and non-variable, and the shape also changes little, a light guide plate manufactured by the offset printing method and a manufacturing method thereof are proposed.

In order to solve the above technical problem, the light guide plate manufactured by the offset printing method of the present invention comprises a light guide plate, and one side of the light guide plate is provided with light guide dots of different shapes, different sizes or different density distributions by offset printing. The combination of light guiding dots of different shapes, different sizes or different density distributions constitutes various pictures. ,

According to another aspect of the present invention, offset printing may be used again on a part of the light guiding dots of the light guide plate, and overlapping and arranged to form a large and thick light guiding dot.

Wherein, the graphic is any one of Chinese characters, letters or patterns or any combination of Chinese characters, patterns and letters.

The light guide plate may constitute a three-dimensional component of different shapes.

The method for manufacturing a light guide plate by offset printing proposed by the present invention has the following steps:

First design the pattern that needs to be printed, and design the light guide dot according to the requirements of the pattern. Plate making

Then, according to the requirements, the offset printing is performed on at least one light guiding dot on one side of the light guiding plate by the offset printing method.

Among them, according to the design of the pattern, after printing the dots of the light guiding dots, the offset printing is performed again on the part of the light guiding dots, and the large and thick light guiding dots are formed by overlapping.

Advantages of this patent compared to the prior art:

(1) The existing light guide plate has a narrow application range and is also limited in design. The use of materials must be accompanied by diffusion materials and reflective materials to solve various glare problems. The invention can solve the glare problem without using diffusion and reflection materials at all, and after the diffusion material is removed, the light can be directly emitted from the light guide plate, thereby reducing energy consumption and improving light efficiency (since the transmittance of the diffusion material is generally <90%, itself Will absorb some of the light), reducing costs (reducing material costs such as light source and diffusion);

(2) The invention is more widely used and has an artistic appreciation value, and can be used not only for lighting but also for decorations, handicrafts and the like. The light is even and soft, the shape is vivid and beautiful, the shape is ever-changing, the stereoscopic effect is stronger, and the light guide plate product line is energy-saving and environmentally friendly. Products are widely used in various types of lighting, art lighting, decorative lighting, crafts, art, furniture lighting, decorative materials, window, cabinets, display stands, exit signs, guide cards, advertising light boxes and other fields. DRAWINGS

Figure 1a and Figure 1b are respectively a front view and a cross-sectional view of a first embodiment of a light guide plate of the present invention; Figures 2a and 2b are respectively a front view and a cross-sectional view of a second embodiment of the present invention;

Figure 3 is a schematic view of the first step of the offset printing plate of the present invention;

Figure 4 is a schematic illustration of the second step of the offset printing process of the present invention. detailed description

Figures la and lb show the basic structure of the first embodiment of the present invention. The light guide plate manufactured by the offset printing method comprises a light guide plate 1 and a light source 4 disposed on two sides of the light guide plate. One side of the light guide plate is provided with a light guide dot of different shapes, different sizes or different density distributions by an offset printing method. In this embodiment, the light guide dots 3 of the larger cylinder and the relatively small rectangular light guide dots 2 form a grid pattern of different brightness and darkness. The light guiding dots can be of any shape, such as a circular shape, a flat shape, a cross shape, and a star shape. These light-guide dots 2, 3 of different shapes, different sizes or different density distributions form various pictures. The graphic text can be any of Chinese characters, letters or patterns, or any combination of Chinese characters, patterns, and letters.

2a and 2b show the basic structure of a second embodiment of the present invention. The basic structure of this embodiment is the same as that of the first embodiment, except that: according to the needs of the pattern, after printing the dots of the first light guiding dot, the offset printing may be performed on the partial light guiding dots again, and the overlapping arrangement is formed. Large and thick light guide dots 5. It is possible to apply offset printing on the local light guiding dots multiple times, so that the light guiding dots are overlapped, so that ' Obtain a larger and thicker light guide dot.

The light guide plate of the present invention is not only a flat plate shape, but may be provided as a different shape of a vertical member such as a cylinder, a polygonal cylinder or the like as needed. Light guiding dots of different shapes, different sizes or different density distributions are disposed on the surfaces of various three-dimensional components.

The method for fabricating the light guide plate of the present invention has the following steps:

Step 1: First design the pattern to be printed, and carry out the art design plate of the light guiding dot according to the requirements of the pattern: as shown in Fig. 3, the printing plate for making the offset printing grid pattern, first in the area where printing is required, cloth A circular light guide dot 2 is selected according to the design requirements. Then according to the design needs of the pattern, remove some of the dots and leave a space 6, as shown in Figure 4. Re-send the thin rectangular light guide dot 3 in the space 6 to complete the production of the printing plate, see Figure la.

Step 2: Performing the printing of the first light guiding dot on one side of the light guide plate 1 by offset printing, and the light guiding dot 3 of the larger cylinder and the relatively small rectangular light guiding dot 2 constitute a network of different brightness and darkness. A grid pattern is used to produce a light guide plate 1 with a grid pattern. As shown in Figure la and Figure lb.

According to the requirements, the printing of the light guiding dots can be performed again on the light guide plate 1, as shown in FIG. 2a and FIG. 2b, according to the design of the pattern, after the printing point of the first light guiding dot 3, the partial light guiding The offset printing is performed again on the dots, and the large and thick light guiding dots 5 are formed by overlapping. The light guiding dots of these reprinted portions are larger than those of the first printing, and the position of the light guiding dots is brighter. Generally, the light guiding dots of the reprinted portion will be correspondingly thicker and the thickness of the light guiding dot of the reprinted portion is increased, and the light emission of the portion is also increased correspondingly, and the three-dimensional feeling of the pattern is also increased, and more layers of Ke can be designed according to needs. Printing cloth points. These light guiding dots may be light guiding dots of different shapes, different sizes or different density distributions.

The invention generates various patterns by using the offset design of the light guiding dots, and adopts one or more printing dot grading methods to form different patterns, and can form different patterns on various shapes (including three-dimensional shapes) and different sizes of light guide plates and/or Or text, the pattern can be designed in a 3D shape, and can be designed by various densities, dot shapes, different lighting area requirements, and the like. When inputting various light sources (light sources of multiple colors), different light-emitting patterns may be generated on the surface of the light guide plate under the different effects of the incident light and the light-guiding mesh point, which may be single-sided illumination (if increased) The reflective film will be more effective, the surface brightness will be improved), or it can be double-sided (can also be seen in the absence of light), using the eco-guide dot design and offset printing to make the pattern Light-emitting dots of different brightness and brightness are formed (various dyeing materials, self-luminous materials may also be added). The portion of the light guiding dot is the light emitting region, and the larger the light guiding dot is, the brighter the light is. When different light sources are input, the entire illuminating area forms different light and dark illuminating, resulting in a variety of different stereo and planar patterns.

Claims

Claim

A light guide plate produced by an offset printing method, comprising a light guide plate (1), wherein one side of the light guide plate is provided with a guide of different shapes, different sizes or different density distributions by an offset printing method. The optical network points (2, 3), the light guiding dots (2, 3) of different shapes, different sizes or different density distributions constitute various pictures.

The light guide plate according to claim 1, wherein a part of the light guiding screen of the light guiding plate (1) is offset by offset printing, and a large and thick light guiding dot (5) is formed in an overlapping manner.

The light guide plate according to claim 2, wherein the light guide plate (1) constitutes a three-dimensional assembly of different shapes.

The light guide plate according to claim 1 or 2 or 3, wherein the graphic is any one of a Chinese character, a letter or a pattern, or any combination of a Chinese character, a pattern, and a letter.

5. A method for fabricating a light guide plate by offset printing, the steps of which are as follows:

First design the pattern that needs to be printed, and perform the art design of the light guide dot according to the requirements of the pattern;

Then, according to the requirement, the offset printing of the light guiding dots is performed on one side of the light guiding plate by the offset printing method.

6. The method according to claim 5, wherein the pattern design requires that, after printing the dots of the light guiding dots, the offset printing is performed again on the part of the light guiding dots, and the overlapping arrangement is formed to be large and thick. Light guides.

7. The method according to claim 6, wherein the light guiding dots on the offset printing are light guiding dots of different shapes, different sizes or different density distributions.