• Semiconductor Optoelectronics
  • Vol. 42, Issue 5, 741 (2021)
ZHANG Lin1, HU Danfeng1, ZHU Pengfei2, PU Donglin3, XU Jie1, and WANG Jiajun1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: 10.16818/j.issn1001-5868.2021062401 Cite this Article
    ZHANG Lin, HU Danfeng, ZHU Pengfei, PU Donglin, XU Jie, WANG Jiajun. Design and Improvement of DMD Control Methods in Direct Laser Writing System[J]. Semiconductor Optoelectronics, 2021, 42(5): 741 Copy Citation Text show less

    Abstract

    In order to solve the problems of scrolling grayscale images of a vertical pixel count higher than 768 using digital micromirror device (DMD) in direct laser writing system, the data transmission and storage and display driving technology of the control circuit was studied. The improvement in image data transmission mode was realized based on the rich logic resources in the FPGA which were used to split the data and convert the bit-width through shift registers. In addition, an interval storage method was proposed to realize the storage of large-size image data. Based on this method, the data can be read during the scrolling display of grayscale images. The workflow of the DMD display device was simplified and the efficiency was promoted by saving the operations of bit-plane splits and images segment in the upper computer. The experimental results show that the system can complete the scrolling display of grayscale image with 419.6Hz.
    ZHANG Lin, HU Danfeng, ZHU Pengfei, PU Donglin, XU Jie, WANG Jiajun. Design and Improvement of DMD Control Methods in Direct Laser Writing System[J]. Semiconductor Optoelectronics, 2021, 42(5): 741
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