Micro-LED Pixel Circuit

μ-LED Pixel Circuit

 

 

 

 

  μ-LED is in the spotlight as a next-generation display device. μ-LED is an ultra-small device with a size of 100μm and has many advantages such as long lifetime due to low power consumption, fast response speed, high resolution, ultra-lightweight, and a wide viewing angle as a self-luminous display. These advantages make it easy to implement AR/VR, wearables, extra large, and bezel-less. μ-LED displays have a problem that they have a wavelength shift of the emitted lights according to the current densities flowing through the μ-LEDs. Therefore, unlike AMLCD and AMOLEDs products that using PAM pixel circuit, μ-LED displays need to apply the pixel circuit with a pulse width modulation(PWM) for the grayscale control to overcome the problem.

  In our lab, we research various circuits related to Display Driver IC (DDI). Based on a-Si TFT, IGZO TFT, and LTPS TFT, we design pixel circuits, scan driver circuits, and emission driver circuits. Also, we use simulation tools to conduct research for verifying various display integrated circuits. Through these studies, our lab has published many papers in each field of pixel circuits, scan driver circuits, and emission driver circuits.