CHIPLUS

Description

The brightness uniformity and the output current accuracy are the most critical issues in the LED display application. To achieve these requirements, Chiplus develops the "self-auto adjust" technology, which enables each output channel to fine-tune its driving current individually, so that the bit-to bit variation could be precisely controlled. In addition, the-IC-to-IC variation could be well controlled consequently with the strict process control during manufacturing and testing. Moreover, to overcome the intrinsic luminosity deviation existing within LEDs on the display panel, Chiplus also develop the "programmable-output-gain" function in the LED driver ICs. By this designed-in feature, user only needs to send a set of digital code into the driver-chip, which would be decoded and transferred into **6 steps current level for each output channel, and has the positive feedback to compensate the luminosity deviation between each LED. Chiplus also design the "error-detection" feature in LED Driver ICs to fulfill this requirement. It is convinient for user to apply this feature by directly reading the detected data from the serial-out pin. To improve the color processing ability, Chiplus develops the "auto count PWM" technology. Through the innovative design technology, our chips could provide widely gray-level range, which let users more convenient to achieve the white-balance demand as well as the fully colored capability in their LED Display products.