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    • 5. 发明公开
    • 액정 표시 장치 제어기
    • 液晶显示控制器
    • KR1020020013715A
    • 2002-02-21
    • KR1020010045246
    • 2001-07-26
    • 가부시키가이샤 히타치세이사쿠쇼
    • 구도야스유끼후루하시쯔또무요꼬따요시까즈마쯔도도시미쯔히가아쯔히로
    • G09G3/36
    • G09G3/3696G09G3/2014G09G3/2022G09G3/3611G09G2330/021
    • PURPOSE: A liquid crystal display controller is provided to obtain a full and/or partial display with good display quality and/or low power consumption based on the scanning period for an active scan line being dependent upon a number of reference clock pulses. CONSTITUTION: A liquid crystal display controller(101) includes an external device(101) provided with a CPU(101a), a memory(101b) and a bus connecting the CPU(101a) and the memory(101b). The external device(101) is connected to a liquid crystal display(LCD) apparatus controller(102) provided with a system interface(104), a control register(105), a reference clock generator(106), a timing generator(107), an address decoder(108), a display memory(109), a data line driver(110), a scanning line driver(111) and a driving voltage generator(112). The liquid crystal display controller(101) includes one or more of the following features: keeping the frequency substantially constant for different numbers of active scan lines, allowing change of the frequency due to characteristics of the LCD, displaying gradation with near linear effective voltage characteristics, displaying gradation data with lower power or displaying a partial or full screen in a mobile device, for example, a cell phone.
    • 目的:提供一种液晶显示控制器,用于根据参考时钟脉冲的数量,基于扫描期间获得具有良好显示质量和/或低功耗的全部和/或部分显示。 构成:液晶显示控制器(101)包括设置有CPU(101a)的外部设备(101),存储器(101b)和连接CPU(101a)和存储器(101b)的总线。 外部设备(101)连接到具有系统接口(104),控制寄存器(105),参考时钟发生器(106),定时发生器(107)的液晶显示器(LCD)设备控制器 ),地址解码器(108),显示存储器(109),数据线驱动器(110),扫描线驱动器(111)和驱动电压发生器(112)。 液晶显示控制器(101)包括以下特征中的一个或多个:对于不同数量的有源扫描线,保持频率基本恒定,允许由于LCD的特性而改变频率,显示具有接近线性有效电压特性的灰度 以较低功率显示灰度数据,或者在移动设备(例如,手机)中显示部分或全屏。
    • 7. 发明授权
    • 액정 표시 장치 및 그 구동 방법
    • 액정표시장치및그구동방법
    • KR100405014B1
    • 2003-11-07
    • KR1020000053684
    • 2000-09-09
    • 가부시키가이샤 히타치세이사쿠쇼
    • 구도야스유끼후루하시쯔또무미야자와도시오미까미요시로아끼모또하지메만바노리오
    • G02F1/136
    • G09G3/3688G09G3/2014G09G3/3648G09G3/3655G09G2310/0259
    • An active matrix type liquid crystal display apparatus includes a display pixel unit including a plurality of pixels arranged in a matrix; a data signal driving circuit for outputting a gray-scale voltage control signal to the pixels and having a pulse width in accordance with gray-scale information of display data, a scan signal driving circuit for outputting at least one of an active voltage and inactive voltage to the pixels, and a gray-scale voltage selecting circuit for outputting a gray-scale voltage to the pixels. The gray-scale voltage in increased and decreased in accordance with time. Each of the pixels includes a liquid crystal cell and a switching element having a drain terminal, a common terminal and a gate terminal. The gate terminal is connected to the data signal driving circuit through a gate electrode, the common terminal is connected to the scan signal driving circuit through a common electrode, and the drain terminal is connected to the gray-scale voltage selecting circuit through a drain electrode.
    • 有源矩阵型液晶显示装置包括:显示像素单元,包括排列成矩阵的多个像素; 数据信号驱动电路,用于向像素输出灰度电压控制信号,并且具有与显示数据的灰度信息相应的脉冲宽度;扫描信号驱动电路,用于输出有效电压和无效电压中的至少一个 以及用于向像素输出灰阶电压的灰阶电压选择电路。 灰度电压随时间增加和减少。 每个像素包括液晶单元和具有漏极端子,公共端子和栅极端子的开关元件。 栅极端通过栅极连接数据信号驱动电路,公共端通过公共电极连接扫描信号驱动电路,漏极端通过漏极连接灰阶电压选择电路 。