P‐19: A Design and application of MIP special driving system for low power Glass‐based products

Abstract

In this paper, a design and application of low power handwritten tablet is proposed. Based on glass‐based MIP low power LCD technology for a 8‐inch product , the multi‐lane SPI series parallel decoding circuit is used to improve the decoding speed of image data transmission, At the same time, it can be refreshed in units of 1 line for partial refresh by means of address decoding. Because the communication and decoding interface of MIP LCD technology is a non‐general interface, an adaptive dedicated driving system is proposed simultaneously, including SOC, MCU, MIP LCD screen, stylus and touch sensor processing. In this driving system, SOC is transmitted to MCU through USB HS, and MCU drives MIP display by customized SPI interface. It can realize the global refresh, partial refresh and stylus touch through data processing which matching the unique data requirements of MIP and adopting multi‐buffer and thread separation. The low‐ power handwritten tablet solution proposed in this paper can significantly reduce power consumption with static power consumption of 25uW and full‐screen refresh rate reach 25Hz while partial refresh rate (100 lines) can be up to 300Hz. Combined with 8color display and stylus partial refresh application, the display content is richer and the response speed is increased by 42.8%, user experience is greatly improved.