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    • 14. 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。
    • 15. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US06646637B1
    • 2003-11-11
    • US09709434
    • 2000-11-13
    • Hiroshi KageyamaHideo SatoYoshiro Mikami
    • Hiroshi KageyamaHideo SatoYoshiro Mikami
    • G09G500
    • G09G3/2011G09G3/3688G09G2310/0248G09G2310/0251G09G2310/027
    • Each of a plurality of D/A conversion circuits DA1˜DA4 is constituted by a plurality of switching thin film transistors (TFTs), each having substantially the same ON resistance, and a control circuit performing ON and OFF control of the switching TFTs in such a manner that, during a D/A conversion operation a predetermined same plural number of switching TFTs are turned ON for any digital input signal representing gradations to be displayed, thereby, the output resistance of each of the D/A conversion circuits is kept substantially constant. Accordingly, multi-gradation and high resolution of a liquid display device are easily achieved and the image quality thereof is improved.
    • 多个D / A转换电路DA1〜DA4中的每一个由多个开关薄膜晶体管(TFT)构成,每个开关薄膜晶体管具有基本上相同的导通电阻,以及控制电路,其执行开关TFT的ON和OFF控制 在D / A转换操作期间,对于要表示所显示的等级的任何数字输入信号,预定相同数量的开关TFT导通,从而每个D / A转换电路的输出电阻基本上保持 不变。 因此,易于实现液晶显示装置的多层次化和高分辨率,并提高其图像质量。
    • 17. 发明授权
    • Drive circuit and image display apparatus
    • 驱动电路和图像显示装置
    • US07116300B2
    • 2006-10-03
    • US09938614
    • 2001-08-27
    • Hiroshi KageyamaYoshiro MikamiHajime Akimoto
    • Hiroshi KageyamaYoshiro MikamiHajime Akimoto
    • G09G3/36
    • G09G3/32G09G2300/08G09G2310/027G09G2310/0275
    • Specified thin-film transistors 26 and 27 are caused to conduct by a gradation signal inputted in control circuits 24 and 25, and resistors with a conduction resistance of activated transistors are inserted between any of reference voltages V0, V2, and V4 and an output terminal T1 or between any of reference voltages V1 and V3 and an output terminal T2, and a pair of thin-film transistors 29 in a sampling circuit 23 are caused to conduct simultaneously in sync with the gradation signal. If a signal line SL1 is selected, reference voltages V0, V2, or V4 and V1 or V3 are applied to the signal line SL1, either as they are or as divided by the conduction resistance of the activated thin-film transistors, by using a junction point between the sampling circuit 23 and signal line SL1 as a voltage dividing point.
    • 使指定的薄膜晶体管26和27通过输入到控制电路24和25中的灰度信号导通,并且将具有激活的晶体管的导通电阻的电阻器插入到参考电压V 0,V 2和V 4中的任一个之间,以及 使输出端子T1或参考电压V 1和V 3中的任一个以及输出端子T 2以及采样电路23中的一对薄膜晶体管29与灰度信号同步地导通。 如果选择了信号线SL 1,则将参考电压V 0,V 2或V 4和V 1或V 3按原样施加到信号线SL 1,或者被激活的薄片的导通电阻除 通过使用采样电路23和信号线SL 1之间的连接点作为分压点。
    • 20. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US07567327B2
    • 2009-07-28
    • US11013196
    • 2004-12-16
    • Genshiro KawachiHideo SatoToshio MiyazawaYoshiro MikamiKatsumi Kondo
    • Genshiro KawachiHideo SatoToshio MiyazawaYoshiro MikamiKatsumi Kondo
    • G02F1/1343G02F1/1335
    • G02F1/134363
    • A liquid crystal display device of low power consumption which exhibits high image quality is realized. To each liquid-crystal-side pixel region of one substrate out of respective substrates which are arranged while sandwiching liquid crystal therebetween, a first switching element and a second switching element which are operated in response to a scanning signal from a gate signal line, a pixel electrode to which a video signal is supplied from the drain signal line through the first switching element, and a counter electrode to which a reference voltage signal is supplied from a reference voltage signal line through the second switching element, and the pixel electrode and the counter electrode are respectively formed of strip-like transparent conductive layers and are substantially alternately arranged in the inside of the pixel region.
    • 实现了具有高图像质量的低功耗液晶显示装置。 在夹着液晶的各个基板之间的一个基板的各液晶侧像素区域之间,分别响应于来自栅极信号线的扫描信号而操作的第一开关元件和第二开关元件, 通过第一开关元件从漏极信号线向其提供视频信号的像素电极,以及通过第二开关元件从参考电压信号线向基准电压信号提供参考电压信号的对电极,以及像素电极和 反电极分别由条状透明导电层形成,并且基本上交替地布置在像素区域的内部。