LED electronic display drive chip has three major problems

Time:2018-11-29 Views:132

Since LED screen is known as the fourth screen of the city, it seems that the cities with developed global economy are covered by LED electronic screen overnight, so LED electronic screen is so popular that it can become popular all over the world overnight!Let‘s say he has the world‘s third most advanced light source technology!So in the process of using LED screen or the drive of LED screen ability, is there any problem that has not been solved?

LED electronic display driver chip problems exist in three major problems

Power consumption and heating problems

Due to the large output current, the power consumption and heat of LED display chip has been the first factor that impedes the development of drive chip.In the future, this problem will become particularly prominent in the driving mode of handheld LED screens.With the improvement of LED device manufacturing technology and the decrease of driving current, the problem will be solved step by step.

2. Application cost

A mainstream 16-bit steady current LED display driver chip can only drive 16 LED devices.An LED display with a resolution of 1 024 x 768 requires multiple driver chips to achieve the desired effect, which makes the material cost higher.If the driver chip itself is scanned, then a mainstream driver chip can drive multi-channel LED devices at a time, which will reduce the application cost a lot.

3 summary

According to the product structure of these LED drive chip manufacturers, the current mainstream chips are mainly divided into three levels.The first level is chips with grayscale mechanism. Such chips have PWM function inside, which can generate grayscale according to the input data. It is easier to form deep grayscale and display high-quality images.The second level is the output open circuit detection (LOD), temperature overheating protection (TSD), brightness regulation function of the chip, these chips have additional functions and more suitable for specific occasions, such as for variable intelligence board, the chip is required to have LED error detection energy.The third stage is constant-current source chip without any additional functions. Such chip only provides constant-current source for LED to ensure good screen quality.