Light guide plate and preparation method thereof

Abstract

The invention discloses a light guide plate and a preparation method thereof. The light guide plate includes a light emitting surface, a back surface and side surfaces; the light emitting surface is opposite to the back surface; the side surfaces are connected to the light emitting surface and the back surface, wherein at least one side surface is provided with a light incident layer; and a portion other than the light incident layer of the light guide plate is a PS layer. The light incident layer material is composed of the following parts by weight: polyethylene glycol terephthalate, ultrafine modified alumina, n-propyl silicate, hydroxypropyl methylcellulose, ultrafine active silicon micro-powder, dimethyl silicone oil, polyetherimide resin, lauryl sodium sulfate, vinyl methyl ether, ethylene bis stearic acid amide, stearate, dibutyl phthalate, hexamethyldisilane, thermoplastic polyurethane elastomer, calcium hydrogen phosphate, dioctyl ester, stabilizer and composite antioxidant; the light guide plate is prepared by mixing various components; and the light guide plate has strong stability and good light transmittance, and can reduce light loss.

Description

technical field [0001] The invention belongs to the technical field of light guide plates, and in particular relates to a light guide plate and a preparation method thereof. Background technique [0002] The light guide plate uses the optical-grade acrylic plate to absorb the light emitted from the lamp to stay on the surface of the optical-grade acrylic plate. When the light hits each light guide point, the reflected light will spread to all angles, and then destroy the reflection condition and be emitted from the front of the light guide plate. . Through light guide points of various densities and sizes, the light guide plate can be made to emit light evenly. [0003] The light panel design principle originates from the LCD screen of a laptop computer, and is a high-tech product that transforms a line light source into a surface light source. Optical-grade acrylic (PMMA) / PC is used as the base material, and the backlight module technology of LCD display and notebook comp...

AI Technical Summary

Problems solved by technology

However, due to the uneven distribution of the thickness of the light guide plate in the traditional light guide plate, the dispersion of the material in the light guide plate is large, the texture is uneven, and the toughness is poor during use, and the damage rate is high. The existing light guide plate cannot It makes the light refract, reflect and scatter well to play the role of soft light, and in the long-term use process, the light transmission performance will deteriorate, which will increase the loss of light energy, and the problem of light uniformity and light transmission cannot be well achieved.

Images