公开(公告)号：US20140002435A1

公开(公告)日：2014-01-02

申请号：US13842600

申请日：2013-03-15

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Shih-Hung HUANG ,  Feng-Ting PAI

IPC: G09G3/00

CPC classification number: G09G3/00 ,  G09G3/344 ,  G09G2310/0275 ,  G09G2310/06

Abstract: A data driver for an electrophoretic display (EPD) includes multiple driver sub-circuits. Each of the driver sub-circuits includes first and second latches, first and second capacitors, a multiplexer and a comparator. The first and second latches respectively provide updated latch image data and current latch image data in response to original image data. When the updated and current latch image data correspond to different levels, the comparator controls the multiplexer in a first period to selectively couple one of the first and second capacitors to a driver end, so as to recycle charges at pixels, and controls the multiplexer in a second period to selectively couple the other of the first and second capacitors to the driver end to pre-charge the pixels with the charges.

Abstract translation: 用于电泳显示器（EPD）的数据驱动器包括多个驱动器子电路。 每个驱动器子电路包括第一和第二锁存器，第一和第二电容器，多路复用器和比较器。 第一和第二锁存器响应于原始图像数据分别提供更新的锁存图像数据和当前锁存图像数据。 当更新的和当前的锁存图像数据对应于不同的电平时，比较器在第一周期内控制多路复用器以选择性地将第一和第二电容器中的一个耦合到驱动器端，以便在像素处再循环电荷，并且控制多路复用器 选择性地将所述第一和第二电容器中的另一个电容器耦合到所述驱动器端的第二周期，以对所述电荷对所述像素预充电。