半导体光子学与技术, 2007, 13 (3): 225, 网络出版: 2011-08-18
Electroluminescence Gray Scale Display Driving Method and Circuit
Electroluminescence Gray Scale Display Driving Method and Circuit
摘要
Abstract
The increasing use of color terminals for personal computers has raised a demand for video graphic adapter(VGA)-format panel displays. Since only monochrome(ZnS∶Mn) electroluminescence(EL) displays of suitable size and speed are available, lack of colors has to be replaced by grayscale in the first place. There are two basic driving methods to achieve grayscale in thin-film EL displays: pulse amplitude modulation(PAM) method and pulse width modulation(PWM) method. But there are serious disadvantages of the two traditional methods. For the former method, the high voltage PAM ICs are too expensive to produce the grayscale EL display in bulks and the driver integrated circuit(IC) is complex. Though the PWM method has good grayscale display quality, the hardware implementation is too complex. A new driving method with which the width and the amplitude of the pulse can be modulated and simultaneously the challenge can be solved efficaciously is presented.
KANG Hao, LI Rong-yu, YANG Xin. Electroluminescence Gray Scale Display Driving Method and Circuit[J]. 半导体光子学与技术, 2007, 13(3): 225. KANG Hao, LI Rong-yu, YANG Xin. Electroluminescence Gray Scale Display Driving Method and Circuit[J]. Semiconductor Photonics and Technology, 2007, 13(3): 225.