In general the brightness of the TFT LCD display screen, according to the specifications of different TFT panel parameters, TN screen and IPS screen transmittance main different, at present, the market LCD display screen brightness is basically in the 200cd/m²-450cd/m², with the modern people use the display device more than the previous application more and more, therefore, before the brightness has been unable to meet the current demand for products. The requirement of increasing the brightness of TFT is getting higher and higher, subject to the limitation of TFT panel process and cost consideration, the way to increase the brightness is most easily realized in the backlight component, which can reach 900cd/m²-1100cd/m², HONGCAI company has a lot of successful and rich design and manufacturing experience in increasing the brightness to satisfy the customer’s demand of the brightness of the product.
1.Backlight
1.1 Increase LED brightness: Use higher brightness LEDs, according to the different brightness levels of LEDs, the brightness is increased, and the color of LEDs will be changed accordingly, in terms of brightness, about 3% increase in brightness.
1.2 Increase the number of LEDs to enhance the overall brightness output, increase the number of different to greatly improve the brightness by 13%.
1.3 Dual-chip LEDs to improve brightness, which requires the use of more current in the current, about 10% increase in brightness.
2.Optimize the backlight process:
2.1 Improve the design of optical materials of light guide plate, diffusion film, lightening film to improve the efficiency of light utilization, about 1-5% brightness.
3.Improve the TFT liquid crystal panel transmittance (limited by the material, basically can not change)
3.1 Improvement of liquid crystal materials: the choice of liquid crystal materials with higher transmittance.
3.2 Optimize the liquid crystal arrangement: through a more reasonable molecular arrangement and process design to reduce light loss.
Konica Minolta CA310 Test Brightness and Color Instruments
4.Brightening polarizer
4.1 Increase the polarizer POL coated by 3M company, theoretically it can increase the brightness by about 20%-30%.
5.Brightening technology of backlight material
5.1 Add brightening film RP: Reduce the light loss and enhance the output brightness by adding brightening film, which can theoretically increase the brightness by about 5%-10%.
5.2 Reduce surface reflection: use anti-reflective coating to reduce external light interference, improve the display effect.
5.3 Increase ESR material produced by 3M, about 3%-5% improvement.
The above programs provide improvement measures at different levels from hardware to materials, which can be selected according to specific application scenarios and budgets. Improvements can be synthesized to achieve desired results based on actual needs and cost factors. It is worth noting that the actual effect of each method may vary depending on the specific product and technical conditions, so a thorough evaluation should be conducted before implementation. In addition, considering the service life of the display, it is not recommended to set the brightness too high.
