Apheliotropic board structure having implantation type LED and preparation method thereof

Abstract

The invention discloses an embedding type LED backlight plate structure and a method of manufacturing the same. The LED backlight plate structure comprises a printed circuit board which is provided with a plurality of arc-shaped concave cups and also a circuit required by the backlight plate; the surfaces of the printed circuit board and the arc-shaped concave cups are coated with a layer of nano gold through sputtering technique, LED luminous crystal grains are embedded in each arc-shaped concave cup, and the LED luminous crystal grains are fixed in the center of each arc-shaped concave cup through high frequency alloying; the LED luminous crystal grains are covered by fluorescent powder glue made of mixture of fluorescent powder and silica gel, and the surface of each arc-shaped concave cup and the surface of the printed circuit board on the periphery of each arc-shaped concave cup are coated with a transparent layer made of transparent silica gel. The invention can improve product yield and luminance with good manufacturability and convenient maintenance.

Description

technical field [0001] The invention relates to an electronic light-emitting display device and a manufacturing method thereof. Background technique [0002] The current LCD backlight panels are mainly based on white CCFL (cold cathode lamp tubes). The CCFL is placed behind the LCD, and then the light is projected onto the light guide plate, diffusion sheet, and brightness enhancement sheet, and then the light is projected on the LCD. The above screen is displayed. As the size of the LCD becomes larger and larger, the required CCFLs and their driving circuits must also increase. To achieve the backlighting function of a large-size LCD, multiple CCFLs must be connected in series / parallel. However, due to inherent factors, CCFLs have the following disadvantages: [0003] 1. The brightness of CCFL is uneven. Even if multiple CCFLs are connected in series / parallel, within the size range of the LCD, the brightness that can be obtained is still uneven, especially for large-size ...

AI Technical Summary

Problems solved by technology

[0003] 1. The brightness of CCFL is uneven. Even if multiple CCFLs are connected in series / parallel, within the size range of the LCD, the brightness that can be obtained is still uneven, especially for large-size LCDs;

[0004] 2. The service life of CCFL is short, and the brightness will begin to decay after about 4000-6000 hours of use, and it is not easy to replace, resulting in a significant shortening of the service life of LCD;

[0005] 3. The color saturation of CCFL is insufficient, and its color temperature is about 4800K, so it can only achieve about 80% of the color gamut specified by NTSC, especially for red light, which cannot meet high-standard color requirements, such as facing Under the conditions of instrument measurement and specific color performance environment, the lack of color can be clearly found;

[0006] 4. The use of CCFL consumes more power, and the harmful substance "mercury" is contained in the production process, which is undoubtedly a kind of harm to environmental protection. Therefore, the Kyoto Protocol stipulates that its use will be banned from July 1, 2006.

[0007] 5. When CCFL is used, it will produce ultraviolet rays, which will cause serious damage to human eyes under long-term use

[0012] Furthermore, any of the aforementioned LCD devices cannot be replaced individually when some components of the backlight are damaged, but must be replaced as a whole, which is very costly

And for large-size LCD, it must be eliminated only because a single component is damaged, which is not only wasteful, but also increases the burden on environmental protection.

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