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    • 33. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US5926234A
    • 1999-07-20
    • US877567
    • 1997-06-17
    • Ichiro ShirakiYasushi KubotaHiroshi Yoneda
    • Ichiro ShirakiYasushi KubotaHiroshi Yoneda
    • G02F1/136G02F1/133G02F1/1362G02F1/1368G09G3/36H01L29/78H01L29/786G02F1/1333G02F1/1345H01L23/62
    • G02F1/13454G02F1/136204G02F2001/136254G09G3/3611H01L2924/0002
    • Picture elements and driving circuits for driving respective picture elements are monolithically formed on an insulating substrate. A protective circuit is provided for allowing input-output terminals of a driving circuit to conduct when a potential difference of not less than a predetermined value is generated. The protective circuit includes an MOS transistor, and a turn-on voltage thereof is set according to a thickness of a gate insulating layer. The protective circuit is formed on the insulating substrate simultaneously when forming the driving circuits. In this arrangement, because the turn-on voltage is set according to the thickness of the gate insulating layer and the thickness can be easily adjusted, an accurate turn-on voltage can be achieved. Since the arrangement prevents an increase in manufacturing cost, the driving circuits, etc., can be surely protected against static electricity generated in the manufacturing process and the input surge in the normal operation.
    • 用于驱动各个像素的图像元件和驱动电路单片地形成在绝缘基板上。 提供保护电路,用于当产生不小于预定值的电位差时允许驱动电路的输入输出端子导通。 保护电路包括MOS晶体管,并且其导通电压根据栅绝缘层的厚度设定。 当形成驱动电路时,保护电路同时形成在绝缘基板上。 在这种布置中,由于根据栅极绝缘层的厚度设定导通电压并且可以容易地调节厚度,所以可以实现准确的导通电压。 由于该装置防止制造成本的增加,因此可以可靠地保护驱动电路等,以免在制造过程中产生的静电和正常操作中的输入浪涌。
    • 38. 发明授权
    • Voltage output circuit and image display device
    • 电压输出电路和图像显示装置
    • US6067066A
    • 2000-05-23
    • US712644
    • 1996-09-11
    • Yasushi KubotaOsamu SasakiHiroshi Yoneda
    • Yasushi KubotaOsamu SasakiHiroshi Yoneda
    • G09G3/20G09G3/36
    • G09G3/3688G09G3/2011G09G3/3655G09G2310/0259G09G2310/027G09G2310/0297
    • A voltage output circuit has decoders, a selecting circuit, a logical circuit and an output circuit in order to select one of plural gradation power source lines for a prescribed period based upon k bits and m bits of an n-bit digital signal. The k bits of the digital signal are converting into 2.sup.k decoded signals by one decoder, and another m bits are converted into 2.sup.m decoded signals by the other decoder. The selecting circuit generates a signal for selecting one of periods which were obtained by dividing one horizontal scanning period into 2.sup.k based upon k-numbered timing signals by using the 2.sup.k decoded signals. The logical circuit generates 2.sup.n signals composed of combinations of the signals from the selecting circuit and the 2.sup.m decoded signals. Moreover, one of the 2.sup.m gradation power source lines is selected by an output switch by using the signal from the logical circuit. As a result, in an image display device using a digital signal as an input video signal, a number of gradation power source lines is reduced and the arrangement of driving circuits is simplified without deteriorating display quality. As a result, a cost of the image display device can be lowered.
    • 电压输出电路具有解码器,选择电路,逻辑电路和输出电路,以便基于n比特数字信号的k比特和m比特来选择多个灰度级电源线中的一个规定时段。 数字信号的k位由一个解码器转换成2k个解码信号,另一个m位由另一个解码器转换成2m个解码信号。 选择电路通过使用2k个解码信号,生成用于选择通过基于k个编号的定时信号将一个水平扫描周期分成2k而获得的周期之一的信号。 逻辑电路产生由来自选择电路的信号和2m个解码信号的组合组成的2n个信号。 此外,通过使用来自逻辑电路的信号,由输出开关选择2m级的电源线之一。 结果,在使用数字信号作为输入视频信号的图像显示装置中,减少了多个灰度电源线,并且简化了驱动电路的布置,而不会降低显示质量。 结果,可以降低图像显示装置的成本。
    • 40. 发明授权
    • Image display device and driving method thereof
    • 图像显示装置及其驱动方法
    • US08325170B2
    • 2012-12-04
    • US12639049
    • 2009-12-16
    • Yukio TanakaMunehiro AzamiYasushi KubotaHajime Washio
    • Yukio TanakaMunehiro AzamiYasushi KubotaHajime Washio
    • G09G5/00G06F3/038
    • G09G3/3688G09G2310/027G09G2310/0297
    • An occupying area of a digital system signal line driver circuit in an image display device is large and this hinders the miniaturization of the display device. A memory circuit and a D/A converter circuit in the signal line driver circuit are commonly used for n (“n” is a natural number equal to or larger than 2) signal lines. One horizontal scanning period is divided into n periods and the memory circuit and the D/A converter circuit each perform processing for different signal lines during each of the divided periods. Thus, all the signal lines can be driven. Therefore, the number of memory circuits and the number of D/A converter circuits in the signal line driver circuit can be reduced to one n-th in a conventional case.
    • 图像显示装置中的数字系统信号线驱动电路的占有面积大,妨碍显示装置的小型化。 信号线驱动电路中的存储电路和D / A转换电路通常用于n(n为等于或大于2的自然数)信号线。 一个水平扫描周期被分为n个周期,并且存储器电路和D / A转换器电路在每个分割周期期间各自执行不同信号线的处理。 因此,可以驱动所有的信号线。 因此,在常规情况下,信号线驱动电路中的存储电路数量和D / A转换电路的数量可以减少到1 / n。