基本信息:
- 专利标题： Electric field discharge display device and its driving method
- 专利标题（中）：电场放电显示装置及其驱动方法
- 申请号：JP2004068540 申请日：2004-03-11
- 公开(公告)号：JP2005107478A 公开(公告)日：2005-04-21
- 发明人： KANG MUN-SEOK
- 申请人： Samsung Sdi Co Ltd , 三星エスディアイ株式会社
- 专利权人： Samsung Sdi Co Ltd,三星エスディアイ株式会社
- 当前专利权人： Samsung Sdi Co Ltd,三星エスディアイ株式会社
- 优先权： KR20030068358 2003-10-01
- 主分类号： H04N5/68
- IPC分类号： H04N5/68 ; B41J2/355 ; G09G3/20 ; G09G3/22 ; H01J1/30 ; H01J31/12
摘要：
PROBLEM TO BE SOLVED: To provide an electric field light emission display device whose PWM clock cycles can actively be varied with luminance of inputted video data and its driving method.
SOLUTION: Provided are an arithmetic part 205 that calculates the luminance level of a video signal by unit pictures to know the extent of lightness of the whole screen, a frame memory 250 as a storage part which stores the video signal by unit pictures, a comparison part 230 which calculates a PWM clock condition signal according to the luminance level calculated by an arithmetic part 205, a PWM clock generation part 260 which generates a PWM clock from the PWM clock condition signal and outputs it to a driving part, and a driving part 270 which modulates the pulse width of driving pulses with the PWM clock to adjust the luminance, thereby representing gradations having certain luminance differences with screen information inputted when actual video is realized.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要（中）：
SOLUTION: Provided are an arithmetic part 205 that calculates the luminance level of a video signal by unit pictures to know the extent of lightness of the whole screen, a frame memory 250 as a storage part which stores the video signal by unit pictures, a comparison part 230 which calculates a PWM clock condition signal according to the luminance level calculated by an arithmetic part 205, a PWM clock generation part 260 which generates a PWM clock from the PWM clock condition signal and outputs it to a driving part, and a driving part 270 which modulates the pulse width of driving pulses with the PWM clock to adjust the luminance, thereby representing gradations having certain luminance differences with screen information inputted when actual video is realized.
COPYRIGHT: (C)2005,JPO&NCIPI
要解决的问题：提供一种电场发光显示装置，其PWM时钟周期可以主动地随输入的视频数据的亮度及其驱动方法而变化。 解决方案：提供了一种算术部件205，其通过单位图像计算视频信号的亮度级，以了解整个屏幕的亮度程度;作为存储部件的帧存储器250，其通过单位图像存储视频信号 ，根据由运算部205计算出的亮度等级的PWM时钟条件信号的比较部230，从PWM时钟条件信号生成PWM时钟并将其输出到驱动部的PWM时钟生成部260，以及 驱动部分270，其利用PWM时钟调制驱动脉冲的脉冲宽度，以调节亮度，从而表示在实现实际视频时输入的屏幕信息具有一定亮度差的灰度。 版权所有（C）2005，JPO＆NCIPI