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    • 11. 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。
    • 14. 发明授权
    • Data signal output circuit for an image display device
    • 用于图像显示装置的数据信号输出电路
    • US5977944A
    • 1999-11-02
    • US909481
    • 1997-08-11
    • Yasushi KubotaKenichi KatohIchiro Shiraki
    • Yasushi KubotaKenichi KatohIchiro Shiraki
    • G02F1/133G09G3/20G09G3/36G11C19/00H03K17/00
    • G09G3/3688G09G3/3648G09G3/2074
    • A data signal output circuit is divided into a plurality of blocks, each having its own supply circuit. In each block, a plurality of shift register sections, constituting a shift register, output pulse signals which have been shifted according to clock signals. Driving sections sample a digital image signal in synchronism with the pulse signal, and output data signals corresponding to the image signal thus sampled to a plurality of output lines. Each supply circuit provided in the blocks receives the image signal when the image signal should be sampled by the driving sections, thereby supplying the image signal only to the minimum number of blocks to be operated. In this manner, the image signal is selectively supplied to the block so as to reduce the effective load on the image signal. As a result, the power consumption generated in the image signal lines can be reduced.
    • 数据信号输出电路被分成多个块,每个块具有其自己的供电电路。 在每个块中,构成移位寄存器的多个移位寄存器部分输出根据时钟信号被移位的脉冲信号。 驱动部分与脉冲信号同步地采样数字图像信号,并且将与所采样的图像信号对应的数据信号输出到多条输出线。 当图像信号被驱动部分采样时,在块中提供的每个供给电路接收图像信号,从而仅将图像信号提供给要被操作的最小数量的块。 以这种方式,图像信号被选择性地提供给块,以便减小对图像信号的有效负载。 结果,可以减少图像信号线中产生的功率消耗。
    • 18. 发明授权
    • Series connected multi-stage linear FET amplifier circuit
    • 串联多级线性FET放大电路
    • US06225866B1
    • 2001-05-01
    • US09594439
    • 2000-06-14
    • Yasushi KubotaIchiro Shiraki
    • Yasushi KubotaIchiro Shiraki
    • H03F368
    • G09G3/3688H03F3/345
    • A sampling circuit is arranged so that source voltages VDD and VEE, which are to be applied to two inverters at the latter stages in a signal path on the p-channel transistor side, are shifted to the positive side with respect to source voltages VCC and VSS that are applied to the other inverters. With such a power supply construction, video signals on the low-potential side in a video signal line are picked up by the n-channel transistor and video signals on the high-potential side are picked up by the p-channel transistor, and the resulting signals are supplied to a data signal line. This arrangement makes it possible to reduce the gate input voltage upon conduction of the sampling switch. Moreover, by shifting the levels of the source voltages as described above, it becomes possible to ensure writing and holding operations even in the case of having signals with a small amplitude. Therefore, even in the case when devices having low withstand voltage are used, no damage is caused on the circuit characteristics.
    • 采样电路被布置成使得要施加到p沟道晶体管侧的信号路径中的后级的两个反相器的源极电压VDD和VEE相对于源极电压VCC和 VSS应用于其他逆变器。 通过这样的电源结构,视频信号线的低电位侧的视频信号由n沟道晶体管拾取,高电位侧的视频信号被p沟道晶体管拾取, 产生的信号被提供给数据信号线。 这种布置使得可以在采样开关导通时降低栅极输入电压。 此外,通过如上所述移动源电压的电平,即使在具有小幅度的信号的情况下也可以确保写入和保持操作。 因此,即使在使用耐压低的装置的情况下,也不会对电路特性造成损害。
    • 19. 发明授权
    • Image display device
    • 图像显示装置
    • US5754155A
    • 1998-05-19
    • US591281
    • 1996-01-25
    • Yasushi KubotaIchiro Shiraki
    • Yasushi KubotaIchiro Shiraki
    • G02F1/133G09G3/20G09G3/36
    • G09G3/3688G09G3/3648G09G3/3696G09G2300/0408G09G2320/041G09G2330/02G09G3/2011
    • In an image display device, a reference voltage generating circuit of a power supply circuit, which applies power supply voltages V.sub.GH and V.sub.GL to a scan signal line driving circuit, is formed on a substrate where picture elements for display are formed, and a transistor which composes the reference voltage generating circuit has the approximately same threshold voltage as a picture element transistor TR.sub.(PIX) which composes the picture elements for display. As a result, the power supply voltages V.sub.GH and V.sub.GL to the scan signal line driving circuit automatically obtain which is optimized for a characteristic of the transistor TR(PIX) which composes the picture elements for display. Therefore, the power supply voltages V.sub.GH and V.sub.GL do not require adjustment per picture element array or every time when the usage environment is changed. As a result, the cost of adjustment is reduced and convenience of the usage is improved.
    • 在图像显示装置中,在扫描信号线驱动电路上施加电源电压VGH,VGL的电源电路的基准电压产生电路形成在形成有显示用象素的基板上, 组成参考电压产生电路具有与组成用于显示的像素的像素晶体管TR(PIX)大致相同的阈值电压。 结果,扫描信号线驱动电路的电源电压VGH和VGL自动获得针对组成用于显示的像素的晶体管TR(PIX)的特性而被优化。 因此,电源电压VGH和VGL不需要对每个图像元素阵列进行调整,或者每当使用环境改变时。 结果,降低了调整成本,提高了使用的便利性。