会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Method and apparatus for driving a liquid crystal display panel
    • 用于驱动液晶显示面板的方法和装置
    • US5307084A
    • 1994-04-26
    • US863379
    • 1992-04-03
    • Hisashi YamaguchiYoshiya KanekoMunehiro HaraguchiHiroshi MurakamiTakayuki HoshiyaTetsuya KobayashiKazuhiro Takahara
    • Hisashi YamaguchiYoshiya KanekoMunehiro HaraguchiHiroshi MurakamiTakayuki HoshiyaTetsuya KobayashiKazuhiro Takahara
    • G09G3/36
    • G09G3/3696G09G3/3622G09G2320/0209
    • In a driver circuit of direct drive matrix type LCD panel, a quantity of ON-STATE cells (or OFF-STATE cells) displayed on the just previous scan electrode is counted and a quantity of ON-STATE cells (or OFF-STATE cells) to be displayed on a present scan electrode is also counted. A compensation voltage is generated according to a predetermined relation based on a difference of the two above-counted quantities, and is superposed onto drive voltages of unselected scan electrodes or of each of data electrodes, in a polarity that an undesirable spike voltage induced on unselected cell voltage is cancelled, in synchronization with selection of the present scan electrode. The compensation voltage may be generated according to a digital difference of the two quantities or to a change in an analog voltage representing the counted quantity. The above-described relation of the compensation voltage versus the counted quantity difference may be proportional or may be given with a predetermined specific relation to meet the panel characteristics. The compensation voltage may be a flat voltage during the period for selecting the single scan electrode or may be of a spike waveform. Amplitude of this spike is determined by the above-described predetermined relation. An irregular panel brightness caused from spike voltages induced from data electrode voltage application is cancelled.
    • 在直接驱动矩阵型LCD面板的驱动电路中,对刚刚扫描电极上显示的一定数量的ON状态单元(或OFF状态单元)进行计数,并将ON状态单元(或OFF-STATE单元) 也显示在当前扫描电极上。 基于两个上述计数量的差异,根据预定关系产生补偿电压,并以非选择的扫描电极或每个数据电极的驱动电压叠加在非选择的不期望的尖峰电压的极性 与当前扫描电极的选择同步地消除电池电压。 补偿电压可以根据两个数量的数字差或与表示计数量的模拟电压的变化产生。 补偿电压与计数量差的上述关系可以是成比例的或者可以以预定的特定关系给出以满足面板特性。 在用于选择单个扫描电极的周期期间,补偿电压可以是平坦的电压,或者可以是尖峰波形。 该尖峰的幅度由上述预定关系决定。 由数据电极电压施加引起的尖峰电压导致的不规则面板亮度被取消。
    • 9. 发明授权
    • Method and a system for driving a display panel of matrix type
    • 用于驱动矩阵型显示面板的方法和系统
    • US5517207A
    • 1996-05-14
    • US301436
    • 1994-09-08
    • Toyoshi KawadaTetsuya KobayashiHisashi YamaguchiTetsuo AokiHiroyuki Miyata
    • Toyoshi KawadaTetsuya KobayashiHisashi YamaguchiTetsuo AokiHiroyuki Miyata
    • G09G3/30
    • G09G3/30G09G2310/0267G09G2310/0275G09G2310/06
    • A method and a system for driving an electro-luminescence display panel of a matrix type has a compensation pulse applied to all the cells prior to or in the front of a pedestal pulse on every frame cycle. The level of the compensation pulse is higher than the pedestal pulse but low enough not to light the cells by itself. The duration of the compensation pulse is long enough to saturate charge polarization in the EL material of the cell, as a dielectric, at the applied voltage. Therefore, brightness of the lighted cell is kept constant regardless of the number of lighted cells on the same data electrode. Each of two power-receiving terminals of push-pull scan drivers is connected to a pulse generator respectively. One of the two power-receiving terminals may be floated from the pulse generator while data pulse is applied to the data electrodes. This configuration prevents damage of the CMOS drivers by latch-up caused therein, as well as reducing power consumption produced by charging current of the data pulses into non-lighted cells.
    • 用于驱动矩阵型电致发光显示面板的方法和系统具有对每个帧周期的基准脉冲之前或之前的所有单元施加的补偿脉冲。 补偿脉冲的电平高于基座脉冲,但足够低,不能自己点亮单元。 在施加的电压下,补偿脉冲的持续时间足够长以使电池的EL材料中的电荷极化作为电介质饱和。 因此,与同一数据电极上的点亮单元数量无关地,点亮单元的亮度保持恒定。 推挽扫描驱动器的两个受电端子中的每一个分别连接到脉冲发生器。 两个电力接收终端中的一个可以从脉冲发生器浮起,而数据脉冲被施加到数据电极。 这种配置防止CMOS驱动器由于其中引起的闩锁而损坏,以及减少由数据脉冲的充电电流产生的功率消耗到非点亮的单元。