P‐77: A Novel Frequency Doubling Technology with Adaptive Dither

• Published in: SID International Symposium Digest of technical papers 2024-06, Vol.55 (1), p.1676-1679
• Main Authors: Wang, Qian, Zhai, Simin, Guo, Yaoming, Liao, Weipeng, Tang, Yuzhou, Lin, Qiqi, Su, Xintian, Jin, Yufeng, Wang, Kai, Liu, Jinfeng, Wu, Yu, Yuan, Jianfeng, Li, Zhifu, Zhao, Bin
• Format: Article
• Language: English
• Subjects: Adaptive algorithms; frequency doubling; Hardware; Image quality; inter-frame adaptive dither algorithm; odd and even frame interlaced compensation; Second harmonic generation; Technology assessment
• ISSN: 0097-966X; 2168-0159
• DOI: 10.1002/sdtp.17890

In this paper, in order to improve the refresh rate of large‐size LCD displays, a new optimized driving scheme combined with new GOA timing is implemented in hardware platform, which is called adaptive scanning for frequency multiplication (ASF) technology, and it can be applied to TV, MNT, NB and other fields. Firstly, this paper introduces the basic principle of Dual Line Gate technology (DLG), which is widely used, and analyzes its advantages and disadvantages. And then ASF technology is proposed to solve the disadvantages of DLG technology. The new optimized driving scheme mainly applied inter‐frame adaptive dither algorithm(ADA), odd and even frame interlaced compensation algorithm(OEC) and application mode for intelligent detection of pictures. A prototype driving circuit was fabricated, and various detection tests have been implemented. The results show the refresh rate is doubled without increasing hardware resources, and this technology avoids the loss of image quality.