关键词: LED, 驱动芯片, 柔性透明屏

Abstract: With the increasing popularity of the light emitting diode (LED) display driver market, the demand for display effect is becoming more and more strict, and a variety of heterosexual screens have gradually become the mainstream application products. Aiming at the problems of single function, low number of cascades, unadjustable current and low gray level of flexible transparent screen driver in the market, a LED display driver chip for flexible transparent screen is designed by using the technology of scrambled pulse with modulation (SPWM). Compared with the traditional flexible transparent screen products, the chip has added new breakpoint transmission and full-color display functions; the maximum number of cascades is increased by 50%, reaching 1024 chips; the global current and R/G/B monochrome current adjustment functions are added, with a wide range of adjustment; the gray level can reach up to 16 bit; the power consumption is reduced by 300%, and the minimum is 0.5 mA. The simulation and experimental results show that the design is correct and reasonable.

Key words: LED, driverIC, flexible-transparentdisplay