Research And Implementation Of A Driving Method To Improve The Resolution Of Microdisplay

With the rapid development of the mobile Internet and the Internet of Things,augmented reality(AR)and virtual reality(VR)technologies are beginning to penetrate people's lives.The micro display chip as the image display source is the core technology of AR and VR.Its application scenarios require it to have the characteristics of small size,high resolution,high frame rate,low latency and low power consumption.The focus of the development of micro-display chips is how to make the resolution higher under the condition that the screen size is small.At present,there has been a technical bottleneck in the method of reducing the physical pixel pitch of the microdisplay.In view of the above problems,this article starts with the driving of the micro display chip,analyzes the visual characteristics of the human eye,and proposes a dynamic sub-pixel combination display method based on the persistence of the human eye vision.This method can be applied to drive control of micro display chips such as LCoS,OLED,Micro-LED,etc.to improve the display resolution.The basic principle is to decompose the high-resolution image into four sub-images lower than the original image resolution,and then display the different sub-images on the display according to different sub-pixel combinations,and increase the display frame rate.The display screen is displayed with an effect higher than its physical resolution,and the display pixel density of the micro display screen is increased,thereby improving the quality of the displayed image.On the basis of proving that this method is feasible to improve the display resolution of micro-display,a display driving scheme is designed,and the circuit design of each module is carried out using Verilog language.Build a functional simulation platform and use the NC-Verilog tool to verify the design.Use the logic synthesis tool Design Compiler to translate,optimize and map the circuit.The display driving scheme is verified by FPGA,and the micro display with a physical pixel resolution of 960 × 540 is lit on the hardware,showing the image display effect of 1920 × 1080,the display frame rate is increased from 60 Hz to 240 Hz,and the display resolution Increased by 3 times.At present,the screen size of the silicon-based OLED microdisplay with RGB 2.5K × 2.5K resolution on the market is about 1.03 inches.If this method is used as the driver,under the same subpixel area,the RGBG 2.5K × 2.5K The size of the resolution-based silicon OLED microdisplay can be controlled within 0.58 inches,and the size will be reduced by 43%.