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    • 32. 发明授权
    • Display device
    • 显示设备
    • US06300927B1
    • 2001-10-09
    • US08932246
    • 1997-09-17
    • Yasushi KubotaKenichi KatohJun Koyama
    • Yasushi KubotaKenichi KatohJun Koyama
    • G09G336
    • G09G3/3648G02F1/13454G09G2300/0408G09G2310/0289
    • There is disclosed an active matrix liquid crystal display that receives input signals having small amplitudes and needs no externally attached level-shifting circuit. The active matrix liquid crystal display has a level-shifting circuit for amplifying various input signals, such as control signals, a clock signal, and a start pulse signal, and supplying the amplified signals to peripheral driver circuits. These peripheral driver circuits drive an active matrix circuit. The level-shifting circuit is made of a differential amplifier consisting of polysilicon TFTs. This amplifier is an analog amplifier. This level-shifting circuit is fabricated on the same substrate as the active matrix circuit and the peripheral driver circuits. If the amplitudes of the input signals are small, level-shifting operations can be performed well. Since any externally attached level-shifting circuit is dispensed with, the cost can be curtailed.
    • 公开了一种有源矩阵液晶显示器,其接收具有小振幅的输入信号,并且不需要外部附接的电平移位电路。 有源矩阵液晶显示器具有电平移位电路,用于放大诸如控制信号,时钟信号和起始脉冲信号的各种输入信号,并将放大的信号提供给外围驱动器电路。 这些外围驱动电路驱动有源矩阵电路。 电平移位电路由由多晶硅TFT组成的差分放大器构成。 该放大器是模拟放大器。 该电平移位电路制造在与有源矩阵电路和外围驱动电路相同的衬底上。 如果输入信号的幅度较小,则可以很好地执行电平转换操作。 由于省去了任何外部附加的电平转换电路,所以可以减少成本。
    • 35. 发明授权
    • Scanning circuit and image display apparatus
    • 扫描电路和图像显示装置
    • US5892495A
    • 1999-04-06
    • US725314
    • 1996-10-02
    • Tamotsu SakaiKenichi KatohYasushi Kubota
    • Tamotsu SakaiKenichi KatohYasushi Kubota
    • G02F1/133G09G3/20G09G3/36G09G5/00
    • G09G3/3677G09G3/3688G09G2310/06G09G3/3648
    • A scanning circuit is provided with a plurality of address lines and AND circuits. The address lines respectively supply bit signals constituting an address signal and inverted bit signals, and each AND circuit conducts a logical operation on a predetermined number of bit signals and inverted bit signals selected from the bit signals and inverted bit signals supplied from the address lines. The AND circuits are connected to the address lines so that only one bit is switched when the address signal carries. Furthermore, a frequency of the least significant bit of the address signal is set to 1/4 of the dot frequency, while the two bits at the high end are set to have the same frequency and a phase difference of 90.degree. each other. With the described arrangement, a phase shift is prevented from occurring to an outputted signal when the address signal carries. Furthermore, the arrangement ensures that the scanning circuit can be realized in a simple circuit arrangement and operates at low frequencies, thereby ensuring a decrease in power consumption.
    • 扫描电路设有多个地址线和“与”电路。 地址线分别提供构成地址信号和反相位信号的位信号,并且每个AND电路根据从地址线提供的位信号和反转位信号中选择的预定数量的位信号和反相位信号进行逻辑运算。 AND电路连接到地址线,使得只有一个位在地址信号传输时被切换。 此外,地址信号的最低有效位的频率被设置为点频的+ E,fra 1/4 + EE,而高端的两位被设置为具有相同的频率和相位差 90°对方。 利用所述的布置,当地址信号携带时,防止对输出信号发生相移。 此外,该布置确保了扫描电路可以以简单的电路布置实现并且在低频下操作,从而确保功耗的降低。