TFL-LCD Auto Color Coordinates Adjustment System

In recent years,With the rapid development of the mobile phone market,Smart phone account for most of the cell phone market.At the same time,That also promoted the rapid development in the field of mobile phone screen,Mobile phone screen is bigger thinner and more high resolution,The development process,TFT-LCD(Thin Film Transistor Liquid Crystal Display)is no doubt that it owns the mainstream panel market.With the popularity of smart phones,People's demands for mobile phone display are also constantly improve,That is no longer just focus on the screen size and higher resolution,People require the better display effect for cell phone.For instance,Brightness,perspective,contrast,saturation,flickr,excessive gray-scale and color temperature of the human eye is more comfortable.The conventional color temperature adjustment method,The stability and precision of that is hard to meet the requirements of customers for high-end display screen,As a result,In this paper,the automatic temperature control system of research and application,To improve the TFT-LCD display effect is of great significance.The article content includes the TFT-LCD drive principle,the principle of optical,color temperature adjustment principle.I analysis the key elements of influence TFT-LCD color temperature,Developed a complete set of automatic temperature control system,Including the system development based on ARM and FPGA,PC human-computer interaction interface development,Optical dispersion instrument selection,Color temperature adjustment algorithm research,and so on.The core of this program is focused on looking for a the method of high controlling accuracy,good stability,short process time.This plan debug and research on base of OPPO5.5 HD display.After repeated algorithm optimization,Final conclusion,This system can guarantee the TFT-LCD color coordinates x,y precision error is less than 0.004,Adjust the time less than 30 seconds,Mass production of defective rate less than 0.1%.This Can satisfy customer and production requirements,And import the batch production.