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    • 115. 发明授权
    • Matrix type image display device
    • 矩阵式图像显示装置
    • US06559824B1
    • 2003-05-06
    • US09666376
    • 2000-09-20
    • Yasushi KubotaHajime WashioKazuhiro MaedaGraham Andrew CairnsMichael James Brownlow
    • Yasushi KubotaHajime WashioKazuhiro MaedaGraham Andrew CairnsMichael James Brownlow
    • G09G336
    • G09G3/3688G09G3/20G09G3/3677G09G2300/0408G09G2310/0232G09G2310/0248G09G2310/0289G09G2330/021
    • A matrix type image display device has a structure in which the internal states of all of shift registers (the outputs of flip-flops included in the shift registers) in a scanning signal line drive circuit and data signal line drive circuit are made inactive by the use of an initializing signal generated by a NAND gate based on a combination of signals, which do not affect a displayed image, from a control circuit. With this structure, since the shift registers are initialized when power is supplied, it is possible to prevent an indefinite state when power is supplied. Therefore, by selectively inputting signals (such as clock signals) for controlling the shift registers, it is possible to prevent an excessive increase in the signal line load. Consequently, the operation of the image display device can be stabilized. Moreover, it is not necessary to improve the drive ability of an external IC incorporating the control circuit and the supply ability of a power supply circuit, thereby achieving a reduction in the cost and power consumption of the external IC.
    • 矩阵型图像显示装置具有这样的结构,其中扫描信号线驱动电路和数据信号线驱动电路中的所有移位寄存器(包括在移位寄存器中的触发器的输出)的内部状态由 基于不影响显示图像的信号的组合,从NAND门产生的初始化信号从控制电路使用。 利用这种结构,由于在供电时初始化了移位寄存器,所以可以在供电时防止不确定的状态。 因此,通过选择性地输入用于控制移位寄存器的信号(例如时钟信号),可以防止信号线负载的过度增加。 因此,能够使图像显示装置的动作稳定。 此外,不需要提高包含控制电路的外部IC的驱动能力和电源电路的供给能力,从而实现了外部IC的成本和功耗的降低。
    • 117. 发明授权
    • Active matrix type liquid crystal display device using driver circuits which latch-in data during horizontal blanking period
    • 使用在水平消隐期间锁存数据的驱动电路的有源矩阵型液晶显示装置
    • US06335778B1
    • 2002-01-01
    • US08901649
    • 1997-07-28
    • Yasushi KubotaIchiro ShirakiTamotsu Sakai
    • Yasushi KubotaIchiro ShirakiTamotsu Sakai
    • G02F11345
    • G09G3/3648G02F1/13454G09G3/2074G09G2300/0408G09G2310/027
    • An active matrix type liquid crystal display device carries out half-tone display with an area gray scale display method, according to which a pixel is composed of a plurality of subpixels and the area of display regions is changed by an image signal that is a binary signal. The amplitude of an opposite electrode is optimized by configuring a data signal line driving circuit with a scanning circuit, latch-in circuits and outputting circuits. This eliminates the needs to externally input an analogue signal and an intermediate voltage, and enables the driving circuit to be configured only with digital circuits. The driving circuit is integrated to prevent increases in cost of the driving circuit and of mounting the driving circuit that are caused by an increase in the number of data signal lines as a result of the adoption of the area gray scale display method. Consequently, it becomes possible to make an attempt to reduce the cost, power consumption and non-defective ratio of the entire system.
    • 有源矩阵型液晶显示装置利用区域灰度显示方法进行半色调显示,根据该方式,像素由多个子像素构成,显示区域的区域由二进制图像信号改变 信号。 通过配置具有扫描电路,锁存电路和输出电路的数据信号线驱动电路来优化对置电极的振幅。 这消除了外部输入模拟信号和中间电压的需要,并且使得驱动电路仅被配置为数字电路。 集成了驱动电路,以防止由于采用区域灰度显示方法而导致数据信号线的数量增加而导致的驱动电路的成本增加和驱动电路的安装。 因此,可以尝试降低整个系统的成本,功耗和无缺陷率。
    • 119. 发明授权
    • Image display device
    • 图像显示装置
    • US06288699B1
    • 2001-09-11
    • US09349379
    • 1999-07-09
    • Yasushi KubotaIchiro ShirakiTamotsu SakaiHiroshi YonedaNobuhiro Kuwabara
    • Yasushi KubotaIchiro ShirakiTamotsu SakaiHiroshi YonedaNobuhiro Kuwabara
    • G09G336
    • G09G5/008G09G3/20G09G3/3648G09G3/3688G09G2310/08H03L7/00
    • A delay detecting section detects the phase difference between a first detection signal as a reference and a second detection signal produced by delaying the first detection signal with part of a data signal line driving circuit itself or part of a circuit formed by the same process as the data signal line driving circuit. A phase adjusting section presumes an internal delay of the data signal line driving circuit, and adjusts the phase difference between a clock signal and start signal, and a video signal so that the data signal line driving circuit samples the video signal at an appropriate timing. These structures prevent a lowering of the image quality due to a difference in the timings of the video signal and sampling signal, and provide an image display device capable of displaying a good-quality image with a simple circuit structure.
    • 延迟检测部分检测作为基准的第一检测信号和通过用数据信号线驱动电路本身的一部分延迟第一检测信号而产生的第二检测信号或通过与第一检测信号相同的处理形成的电路的一部分来产生的第二检测信号 数据信号线驱动电路。 相位调整部分假设数据信号线驱动电路的内部延迟,并且调整时钟信号和起始信号之间的相位差和视频信号,使得数据信号线驱动电路在适当的定时对视频信号进行采样。 这些结构防止由于视频信号和采样信号的定时的差异导致的图像质量的降低,并且提供能够以简单的电路结构显示优质图像的图像显示装置。
    • 120. 发明授权
    • Driving circuit of liquid crystal display device
    • 液晶显示装置的驱动电路
    • US06281865B1
    • 2001-08-28
    • US09150933
    • 1998-09-10
    • Jun KoyamaYukio TanakaYasushi KubotaTamotsu Sakai
    • Jun KoyamaYukio TanakaYasushi KubotaTamotsu Sakai
    • G09G336
    • H01L27/124G02F1/1362G02F2001/13629G09G3/3685G09G2300/0426G09G2320/0209G09G2320/0223
    • A driving circuit of a liquid crystal display device including a first insulating substrate on which a plurality of signal lines and a plurality of scan lines are disposed, and pixel transistors made of thin film transistors are disposed in matrix at intersection points of those lines; a second insulating substrate opposite to the first insulating substrate; and a liquid crystal held between the first and second insulating substrates, in which the driving circuit is disposed on the first insulating substrate; each of clock lines or base portions of the clock lines for supplying clock signals to the driving circuit is made of a two-layer structure of the same wiring material as a gate electrode of the thin film transistor and the same wiring material as a source electrode or drain electrode of the thin film transistor; and a wiring line crossing the clock lines or the base portions of the clock lines is made of a wiring line in the same layer as a black matrix covering the pixel transistors.
    • 一种液晶显示装置的驱动电路,包括:第一绝缘基板,多个信号线和多个扫描线被配置在其上;以及由薄膜晶体管制成的像素晶体管,以这些线的交点为矩阵; 与所述第一绝缘基板相对的第二绝缘基板; 以及保持在第一和第二绝缘基板之间的液晶,其中驱动电路设置在第一绝缘基板上; 用于向驱动电路提供时钟信号的时钟线的每个时钟线或基极部分由与薄膜晶体管的栅电极相同的布线材料和与源电极相同的布线材料的两层结构 或漏极电极; 并且与时钟线的时钟线或基极部分交叉的布线由与覆盖像素晶体管的黑矩阵相同的层中的布线构成。