Diffusion Film for LED Backlight You May Not Know
The Theory and Function of Diffusion Film The diffusion film is the spread material that transforms the linear light source of CCFL or the point light source of LED into a uniform surface light source in the LCD module. The theory of LCD diffusion film is that making the light pass through the medium of […]
Brightness Enhancement Film for LED Backlkight
BEF which is abbreviated for Brightness Enhancement Film and is also called Prism Sheet. It is the key component of backlight module and occupy the highest proportion of the cost in the backlight module. It not only can concentrate the scattering light within a 70-degree angle in the front, but also can make the light […]
What is Color Temperature
The color temperature is that human eyes see the variation of the color when light waves are in different energy. We regard Kelvin as the unit for color temperature, and the radiation of object is 0°and Kelvin is -273° C as the starting point of calculation. When the object is heated, the color temperature will […]
LED Backlight Has Replaced CCFL Backlight
1. LED Backlight is dominating the market while CCFL Backlight is disappearing The power consumption of LED backlight is much lower than CCFL backlight’s in the same amount of brightness. For example: the power consumption of 12 inch LED backlight laptop computer is less than 3 watt, but traditional CCFL backlight’s is between 3.5-4 watt. […]
What is Light Guide Plate
1. Introduction of Light Guide Plate The main material of light guide plate is an optical acrylic sheet whose chemical name is polymethyl methacrylate (PMMA) and its weight is 1190 KG per cubic meter. Transparent acrylic sheet is widely used because of its high light transmittance and strong impact resistance. The acrylic sheets in the […]
Backlight Bleeding
1. What is backlight bleeding? It is a very common phenomenon that liquid crystal display panel and the frame are not tight enough that some lights are transmittance out. It is inevitable to some extent and only a matter of how serious it is. Low-end display panels are more serious, meanwhile, high-end display panels are […]
LED Serial Connection vs LED Parallel Connection
1. The LED lamps connection arrangement directly affect the backlight performance There are two main ways of LED backlight technology applied in liquid crystal television: bottom LED backlight source and edge LED backlight source. Although each has its own merits, edge LED backlight module is becoming a major in the market because of its relatively low cost. The design of […]
The Basic Structure and Features of LED Backlight
1. The Basic Structure of LED Backlight LED backlight can be divided into several important parts. Light guide plate: It is divided into printed type and non-printed type by the production method of light guide points. Non-printed type of light guide plate: An excellent mold has to be produced before the process begins. Light guide plate […]
8 Advantages of LED When It’s Used as a Light Source
Mankind has entered the age of brightness since Thomas Edison invented carbon-filament incandescent lamp in 1879. When we look back on the history of lighting, new light sources emerged in an endless stream, for example, fluorescent lamp, mercury lamp, high/low-voltage sodium lamp, metal halide lamp, compact fluorescent lamp, high-frequency energy-saving fluorescent lamp, microwave lamp and so on. […]
7 Technical Parameters of LCD
As we know, the state of matter that people familiar with is gas, liquid, solid, ion and liquid crystal. Liquid crystal is the combination of molecules with special structure. It is liquid in a certain temperature range and crystal in a lower temperature. It not only has special physical property of flowing, but also has […]