Design And Research Of OLED Micro-display Based On Human Visual Properties

With the development of virtual reality technology,consumers have higher requirements for display resolution and refresh rate of micro-display devices in order to obtain better visual experience.In the process of human-computer interaction of virtual reality,whether it is the data acquisition of the external scene or the scene display in the display device,a large amount of image data transmission is required.In the process of data transmission,data compression and progressive transmission are often performed due to the limitation of data transmission bandwidth.It rarely applies the characteristics of the spatial region change rate to the data transmission process,while the traditional data compression method considers the limitations of the human visual characteristics on color.Aiming at the high data bandwidth problem in the virtual reality applications,this dissertation presents a multi-resolution hybrid coding algorithm based on the human eye visual perception characteristic,which applies the characteristics of spatial change rate of human visual region to the process of data transmission.An OLED-on-silicon micro-display based on human visual characteristics is designed.FPGA is used as the core drive controller to realize real-time video codec,and the video effects are displayed on OLED micro-displays.The main work and contributions are as follows:1.A multi-resolution hybrid coding algorithm based on human visual characteristics is proposed.Combining with the high degree of non-uniformity of human eye cell distribution,the characteristics of the spatial change rate of the visual region are applied to the process of data transmission,and the multi-layer texture pyramid is used to simulate the human eye gaze effect.The proposed method has good rendering quality,which meets the visual perception of the human eye.2.Participate in the design of the OLED on silicon micro-display of the research group,and the basic design simulation work of the micro-display chip drive circuit is completed.To implement the algorithm above,a kind of video codec real-time controller system is designed,which uses FPGA as the processor,including the video input,line buffer,gaussian filtering,hybrid coding,image scaling and other modules.It can be implemented for real-time codec transmission processing of 1600?1600@60 Hz video images.3.A FPGA verification platform is built to verify the correctness of the OLED-onsilicon micro-display system based on visual characteristics.The experimental results show that the multi-resolution hybrid algorithm based on human visual characteristics has the good data compression ratio,which can effectively reduce the transmission bandwidth of video data.It also meets the transmission demand of real-time rendering data of the OLED-on-silicon micro-display system in virtual reality embedded environment.