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    • 9. 发明授权
    • Liquid crystal display apparatus having level conversion circuit
    • 具有电平转换电路的液晶显示装置
    • US06392625B1
    • 2002-05-21
    • US09337260
    • 1999-06-22
    • Hideo SatoYoshiro MikamiHiroshi KageyamaTatsuya Ohkubo
    • Hideo SatoYoshiro MikamiHiroshi KageyamaTatsuya Ohkubo
    • G09G336
    • G09G5/006G09G3/3611G09G3/3674G09G3/3685G09G2310/0289H03K3/356147H03K19/018521
    • A liquid crystal display apparatus including a level conversion circuit in which a high speed operation can be attained and also a small transistor capacity can be obtained. In the liquid crystal display apparatus, a signal circuit for driving pixel elements of a display unit and a scanning circuit are provided. The level conversion circuit is constituted of first and second transistors 111 and 112, the respective gate electrodes of which are connected to a first bias voltage power supply, and third and fourth transistors 121 and 122, the respective gate electrodes of which are connected to a second bias voltage power supply and the respective source electrodes of which are connected to a power supply. The drain electrodes of the first and the second transistors 111 and 112 are connected to the respective drain electrodes of the third and the fourth transistors 121 and 122. To the respective source electrodes of the first and the second transistors 111 and 112, signals having a mutually different polarity and a low amplitude are inputted and from the respective drain electrodes of the first and the second transistors 111 and 112, signals having a mutually different polarity and a high amplitude are taken out.
    • 一种液晶显示装置,包括能够获得高速运转并且还能获得小的晶体管容量的电平转换电路。 在液晶显示装置中,设置有用于驱动显示单元和扫描电路的像素元件的信号电路。 电平转换电路由第一晶体管111和第二晶体管112构成,其各自的栅电极连接到第一偏置电压电源,第三和第四晶体管121和122,其各自的栅电极连接到 第二偏压电源,其各自的源电极连接到电源。 第一晶体管111和第二晶体管112的漏极连接到第三晶体管121和第四晶体管122的各个漏电极。对于第一晶体管111和第二晶体管112的各个源极, 输入相互不同的极性和低振幅,并且从第一和第二晶体管111和112的各个漏极引出具有相互不同的极性和高振幅的信号。
    • 10. 发明授权
    • Liquid crystal display apparatus
    • 液晶显示装置
    • US06825826B1
    • 2004-11-30
    • US09511160
    • 2000-02-23
    • Yoshiro MikamiHideo SatoHiroshi KageyamaKazuhito Masuda
    • Yoshiro MikamiHideo SatoHiroshi KageyamaKazuhito Masuda
    • G09G336
    • G09G3/3688G09G3/3611G09G2310/0218G09G2310/027G09G2370/08
    • A liquid crystal display apparatus includes: one of a pair of substrates being transparent and a liquid crystal layer sandwiched between the pair of substrates; the one substrate including a plurality of scanning wirings, a plurality of signal wirings, a plurality of thin film semiconductor devices formed on intersections of the scanning wirings and the signal wirings, and a display electrode; and the other substrate including an opposed electrode. The apparatus further includes: first relay buses extended continuously over a width of said signal wirings, and second relay buses divided the width of signal wirings into a plurality of blocks; a relay circuit formed between the first and second relay buses for each of the blocks; a data latch read the display data in sequence through the second relay buses to latch the display data of one block amount; a memory circuit which reads out the display data of the one block amount simultaneously; a level shifter circuit which reads out a content of the memory circuit to change a logical voltage; and a D/A circuit which converts an output from the level shifter circuit into an analog voltage to drive the signal wirings.
    • 液晶显示装置包括:一对基板中的一个是透明的,夹在一对基板之间的液晶层; 所述一个基板包括多个扫描布线,多个信号布线,形成在扫描布线和信号布线的交点上的多个薄膜半导体器件和显示电极; 并且另一个基板包括相对的电极。 该装置还包括:在所述信号布线的宽度上连续延伸的第一中继总线,以及第二中继总线将信号布线的宽度分成多个块; 在每个块的第一和第二中继总线之间形成的继电器电路; 数据锁存器通过第二中继总线依次读取显示数据以锁存一个块数量的显示数据; 存储电路,同时读出一个块数量的显示数据; 读出存储电路的内容以改变逻辑电压的电平移位器电路; 以及将电平移位器电路的输出转换为模拟电压以驱动信号布线的D / A电路。