发明名称 |
Electrophoretic display device and method of driving an electrophoretic display device |
摘要 |
A method of driving an electrophoretic display device displays an image during an image frame divided into a plurality of sub-frames. Sub-frame periods of the plurality of sub-frames are determined based on a predetermined resolution of the image. The plurality of sub-frames have sub-frame periods that differ from one another. A plurality of unit pixels are initialized by applying a common voltage to a common electrode and by applying a first voltage to a plurality of pixel electrodes. Each pixel electrode corresponds to a respective one of the plurality of unit pixels. Gray levels of the plurality of unit pixels are controlled by selectively applying one of the common voltage and a second voltage to each pixel electrode during each sub-frame. |
申请公布号 |
US8854351(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US201213361139 |
申请日期 |
2012.01.30 |
申请人 |
Samsung Electronics Co., Ltd. |
发明人 |
Kim Do-Yeon;Kwon Sun-Cheol |
分类号 |
G09G3/34;G09G3/20 |
主分类号 |
G09G3/34 |
代理机构 |
F. Chau & Associates, LLC |
代理人 |
F. Chau & Associates, LLC |
主权项 |
1. A method of driving an electrophoretic display device displaying an image during an image frame divided into a plurality of sub-frames, the method comprising:
determining sub-frame periods of the plurality of sub-frames based on a predetermined resolution of the image, the plurality of sub-frames having sub-frame periods that differ from one another; initializing a plurality of unit pixels included in the electrophoretic display device by applying a common voltage to a common electrode and by applying a first voltage to a plurality of pixel electrodes, each pixel electrode corresponding to a respective one of the plurality of unit pixels; and controlling gray levels of the plurality of unit pixels by selectively applying one of the common voltage and a second voltage to each pixel electrode during each sub-frame, wherein the plurality of sub-frames include first through n-th sub-frames, where n is a natural number>=two, and wherein a sub-frame period of a k-th sub-frame is greater than a sub-frame period of a (k−1)-th sub-frame, where k is a natural number>=two and <=n; and wherein a first unit pixel of the plurality of unit pixels has a darkest gray level when the second voltage is applied to a first pixel electrode corresponding to the first unit pixel during an entire period of the first sub-frame through the n-th sub-frame, and wherein a second unit pixel of the plurality of unit pixels has a lightest gray level when the common voltage is applied to a second pixel electrode corresponding to the second unit pixel during the entire period of the first sub-frame through the n-th sub-frame. |
地址 |
Suwon-Si, Gyeonggi-Do KR |