CN201892756U - Light guide plate manufactured by means of offset printing - Google Patents

Abstract

The utility model discloses a light guide plate manufactured by means of offset printing, which comprises a light guide plate. Different sizes of light guide screen dots in different shapes or different density distribution are arranged on a lateral surface of the light guide plate by means of offset printing and combined to form various image-texts. The utility model further discloses a manufacturing method of the light guide plate. The different sizes of light guide screen dots in different shapes or different density distribution are combined to form various image-texts on the light guide plate, so that the problem of glare can be solved without diffusion materials, light can be directly emitted, energy consumption and cost are reduced, and lighting effect is improved. The light guide plate manufactured by means of offset printing is wider in application and further has artistic appreciation value.

Description

Light guide plate made by offset printing method

technical field

The utility model relates to a light transmission device, in particular to a light guide plate made by an offset printing method which is suitable for various types of lighting, artistic lighting and decorative lighting, decorative materials, showcases, cabinets, display stands and the like.

Background technique

The design principle of the light guide plate is derived from the liquid crystal display screen of the notebook computer. The light guide plate uses fluorescent lamps, CCFL, and LED light sources to pass through the light guide point or light guide groove calculated according to the optical principle, and under the action of the reflective film (reflector) and the diffusion film, the line light source or point light source is transformed into a surface light source. In order for the light guide plate to emit light evenly, it must pass through various light guide points of different densities and sizes to ensure that the efficiency of light reflection in all directions is basically the same. The purpose of the reflective sheet (reflective plate) is to reflect the light revealed from the bottom surface of the light guide plate back into the light guide plate, so as to improve the efficiency of light use and increase the brightness. The function of the diffusion film is to make the light more uniform and softer. The light guide plate has a wide range of applications, such as TV backlight, lighting, decoration, advertisement, signage and so on. The dot design of the existing light guide plate is full-scale dots, monotonous and unchanged, and the shape does not change much.

Contents of the invention

In order to solve the technical problem that the dot design of the existing light guide plate is full-page dots, monotonous and non-variable, and the shape does not change much, the utility model proposes a light guide plate made by offset printing method.

In order to solve the above technical problems, the utility model proposes a light guide plate made by offset printing, including a light guide plate. One side of the light guide plate is provided with light guide dots by offset printing, and the light guide dots are combined to form various pictures and texts.

In another solution of the present invention, according to needs, offset printing can be used again on some of the light guide dots of the light guide plate, and overlapping arrangements are made to form large and thick light guide dots.

Wherein, the pictures and texts are any one of Chinese characters, letters or patterns or any combination of Chinese characters, patterns and letters.

The light guide plate can form three-dimensional components of different shapes.

Compared with the prior art, the advantages of this patent:

(1) The application range of the existing light guide plate is relatively narrow, and there are many restrictions on the design. The use of materials must be combined with diffusing materials, reflecting materials, etc. to solve various glare problems. The utility model can completely solve the glare problem without using diffusion and reflection materials, and after canceling the diffusion material, the light can be directly emitted from the light guide plate, which reduces energy consumption and improves light efficiency (because the light transmittance of the diffusion material is generally <90%, itself Will absorb part of the light), reduce costs (reduce material costs such as light sources and diffusion);

(2) The utility model is more widely used and has artistic appreciation value, not only can be used for lighting, but also can be used for decorations, handicrafts and the like. The light is uniform and soft, the appearance is vivid and beautiful, the shape is ever-changing, the three-dimensional effect is stronger, the product line of the light guide plate is extended, energy saving and environmental protection. Products are widely used in various lighting, artistic lighting, decorative lighting, handicrafts, artworks, furniture lighting, decorative materials, windows, cabinets, display stands, exit signs, guide signs, advertising light boxes and other fields.

Description of drawings

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

Fig. 2a, Fig. 2b are respectively the front view and the sectional view of the second embodiment of the utility model;

Fig. 3 is the schematic diagram of the first step of offset printing plate making of the present utility model;

Fig. 4 is a schematic diagram of the second step of offset printing plate making of the utility model.

Detailed ways

Fig. 1a and Fig. 1b show the basic structure of the first embodiment of the utility model. The light guide plate manufactured by offset printing includes a light guide plate 1 and light sources 4 arranged on both sides of the light guide plate. One side of the light guide plate is provided with light guide dots of different shapes, sizes or density distributions by means of offset printing. In this embodiment, the larger cylindrical light guide dots 3 and the smaller rectangular light guide dots 2 form grid patterns with different shades. Light guide points can be in any shape, such as circular, straight, cross and star. These light guide dots 2 and 3 with different shapes, sizes or density distributions are combined to form various graphics and texts. Graphics and texts can be any one of Chinese characters, letters or patterns, or any combination of Chinese characters, patterns, and letters.

Fig. 2a and Fig. 2b show the basic structure of the second embodiment of the present utility model. The basic structure of this embodiment is the same as that of the first embodiment, the difference is: according to the needs of the pattern, after the first printing of the light guide dots, offset printing can be done on some of the light guide dots again, and the overlap is formed. Large and thick light guide dots5. It can be offset-printed on local light-guiding dots multiple times, and the light-guiding dots can be overlapped so as to obtain larger and thicker light-guiding dots.

The light guide plate of the utility model is not only flat, but also can be arranged into three-dimensional components of different shapes, such as cylinders, polygonal cylinders, etc., as required. Light-guiding dots of different shapes, sizes or density distributions are arranged on the surfaces of various three-dimensional components.

The manufacturing method of the light guide plate of the present utility model, its steps are as follows:

Step 1: Design the pattern that needs to be printed first, and then carry out the art design and plate making of the light guide dots according to the requirements of the pattern: as shown in Figure 3, to make the printing plate of the offset printing grid pattern, first place the printing area on the required printing area, and cover it with Circular light guide dots 2 selected according to design requirements. Then, according to the design requirements of the pattern, some dots are removed, leaving a space 6, as shown in Figure 4. Re-distribute thinner rectangular light guide dots 3 in the space 6 to complete the production of the printing plate, see Figure 1a.

Step 2: Use offset printing to do the first distribution printing of the light guide dots on one side of the light guide plate 1, and the larger cylindrical light guide dots 3 and the smaller rectangular light guide dots 2 form nets of different shades grid pattern to produce a light guide plate 1 with a grid pattern. As shown in Figure 1a and Figure 1b.

According to requirements, it is also possible to print the dots of the light guide dots on the light guide plate 1 again, as shown in Figure 2a and Figure 2b. According to the needs of pattern design, after the first printing of the light guide dots 3, some light guide dots Offset printing is carried out again on the dots, and large and thick light guide dots 5 are formed by overlapping. The light guide dots of these reprinted parts are larger than those of the first printing, and the light guide dots are brighter. Generally, the light guide dots in the reprinted part will be thicker and thicker, and the thickness of the light guide dots in the reprinted part will be increased accordingly, and the luminescence of this part will be increased accordingly, and the three-dimensional effect of the pattern will also be increased. According to needs, more layers of Ke can also be designed. Printing dots. These light guide grid points can be light guide grid points with different shapes, different sizes or different density distributions.

The utility model generates various patterns through the offset design of the light guide dots by using one or more times of printing, and can form different patterns and patterns on the light guide plates of various shapes (including three-dimensional shapes) and different sizes. /or text, patterns can be designed into 3D three-dimensional shapes, and can be designed through various densities, shapes of dots, and requirements for different light-emitting areas. When various light sources (multi-color light sources) are input, under the influence of the incident light and the light guide network points, various light-emitting patterns will be produced on the surface of the light guide plate, which can be single-sided light emission (if added The effect of the reflective film will be better, and the brightness of the surface will be improved), and it can also be double-sided luminous (offset patterns can also be seen when there is no light incident), using the offset light guide dot design and offset printing method to make the pattern Form luminous dots with different luminances (various dyeing materials and self-luminous materials can also be added). The light guide dot part is the light-emitting area, the larger and denser the light guide dot, the brighter the light. When different light sources are input, the entire light-emitting area forms different light and dark lights, thereby producing various three-dimensional and planar patterns.

Claims (3)

1. A light guide plate made by offset printing, comprising a light guide plate (1), characterized in that one side of the light guide plate is provided with light guide dots (2, 3) by offset printing, the light guide plate Optical grid points (2, 3) are combined to form various graphics and texts. 2. The light guide plate according to claim 1, characterized in that, some of the light guide dots of the light guide plate (1) are offset-printed again, and are overlapped to form large and thick light guide dots (5). 3. The light guide plate according to claim 2, characterized in that the light guide plate (1) constitutes three-dimensional components of different shapes. the

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