公开(公告)号：EP1538596B1

公开(公告)日：2013-07-17

申请号：EP04028541.3

申请日：2004-12-02

Applicant: STMicroelectronics International N.V. ,  STMicroelectronics GmbH

Inventor： Khurana, Jatin ,  Gourdou, Yvon

IPC: G09G3/36

CPC classification number: G09G3/3622 ,  G09G3/18 ,  G09G3/2014 ,  G09G3/2018 ,  G09G3/3614 ,  G09G2310/06 ,  G09G2320/0204 ,  G09G2320/0626 ,  G09G2320/066

公开(公告)号：EP1538596A3

公开(公告)日：2008-07-09

申请号：EP04028541.3

申请日：2004-12-02

Applicant: STMicroelectronics Pvt. Ltd. ,  STMicroelectronics GmbH

Inventor： Khurana, Jatin ,  Gourdou, Yvon

IPC: G09G3/36

CPC classification number: G09G3/3622 ,  G09G3/18 ,  G09G3/2014 ,  G09G3/2018 ,  G09G3/3614 ,  G09G2310/06 ,  G09G2320/0204 ,  G09G2320/0626 ,  G09G2320/066

Abstract: An LCD display driver providing adjustable contrast independently of multiplexing requirements by generating each COM signal in a time slot of a repeating signal frame, each COM signal containing one or more active periods and one or more inactive periods, the relative time proportions of which are adjustable, and corresponding SEGMENT signals turn on/off required segments while maintaining an essentially zero DC component, the logic levels and the relative active time and inactive times of the COM and segment signals being adjustable for increasing or decreasing the RMS voltage levels across the LCD element as desired.

公开(公告)号：EP1538596A2

公开(公告)日：2005-06-08

申请号：EP04028541.3

申请日：2004-12-02

Applicant: STMicroelectronics Pvt. Ltd. ,  STMicroelectronics GmbH

Inventor： Khurana, Jatin ,  Gourdou, Yvon

IPC: G09G3/36

CPC classification number: G09G3/3622 ,  G09G3/18 ,  G09G3/2014 ,  G09G3/2018 ,  G09G3/3614 ,  G09G2310/06 ,  G09G2320/0204 ,  G09G2320/0626 ,  G09G2320/066

Abstract: An LCD display driver providing adjustable contrast independently of multiplexing requirements by generating each COM signal in a time slot of a repeating signal frame, each COM signal containing one or more active periods and one or more inactive periods, the relative time proportions of which are adjustable, and corresponding SEGMENT signals turn on/off required segments while maintaining an essentially zero DC component, the logic levels and the relative active time and inactive times of the COM and segment signals being adjustable for increasing or decreasing the RMS voltage levels across the LCD element as desired.

Abstract translation: 一种LCD显示驱动器，通过在重复信号帧的时隙中产生每个COM信号来提供独立于复用要求的可调对比度，每个COM信号包含一个或多个有效周期和一个或多个非活动时段，其相对时间比例可调 ，并且相应的SEGMENT信号打开/关闭所需的段，同时保持基本为零的DC分量，COM和段信号的逻辑电平和相对有效时间和无效时间是可调节的，用于增加或减少跨越LCD元件的RMS电压电平 如预期的。