The light guide plate of the backlight module, the application and function introduction of the light guide plate in the backlight module.
The light guide plate is mainly used in side-light backlight modules. It is an important component that affects light efficiency. The wedge-shaped plate with a smooth surface is pressed from acrylic by injection molding, and then a material with high reflectivity and no light absorption is used. The bottom surface of the bare board is printed with circular or square diffused dots by screen printing. The main function of the light guide plate is to guide the direction of the light line to improve the brightness of the panel and control the uniformity of brightness. The cold-cathode tube is located on the end face of the thick side of the light guide plate. The light emitted by the cold-cathode tube enters the light guide plate in the form of end-face illumination. Most of the light is transmitted to the thin end by total reflection. When the light hits the microstructure on the bottom surface, it is emitted from the front. , the use of microstructure pattern design with different densities and sizes can make the surface of the light guide plate emit light evenly.The light guide plate is mainly used in side-light backlight modules. It is an important component that affects light efficiency. The wedge-shaped plate with a smooth surface is pressed from acrylic by injection molding, and then a material with high reflectivity and no light absorption is used. The bottom surface of the bare board is printed with circular or square diffused dots by screen printing. The main function of the light guide plate is to guide the direction of the light line to improve the brightness of the panel and control the uniformity of brightness. The cold-cathode tube is located on the end face of the thick side of the light guide plate. The light emitted by the cold-cathode tube enters the light guide plate in the form of end-face illumination. Most of the light is transmitted to the thin end by total reflection. When the light hits the microstructure on the bottom surface, it is emitted from the front. , the use of microstructure pattern design with different densities and sizes can make the surface of the light guide plate emit light evenly.
In terms of appearance, it is divided into: 1. Wedge plate. 2. Flat plate. Generally, notebook computers use wedge-shaped boards due to space considerations, while LCD monitors and LCD TVs mainly use flat-panel boards. the
Material: PMMA---optical acrylic plate, that is, plexiglass
Features: low surface roughness and good optical properties
Function: accept the light source and guide the scattering direction of light
Type: Printing (diffused dots are printed by screen printing), non-printing (made with molds with dots or textures set)
Non-printing includes machining, etching and thin plate replacement
Direct type (light source is on the back of LGP), side light type (light source is on the side)
Rectangle, wedge, arc, etc.
The introduction to the light guide plate of the backlight module is roughly here today, and there are other supplementary materials that we will update one after another. Welcome customers who need it to pay attention.