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    • 4. 发明授权
    • Scanning circuit and image display device
    • 扫描电路和图像显示装置
    • US07746338B2
    • 2010-06-29
    • US11491120
    • 2006-07-24
    • Kenji ShinoTadashi AokiAoji IsonoKazuhiko Murayama
    • Kenji ShinoTadashi AokiAoji IsonoKazuhiko Murayama
    • G09G5/00
    • G09G3/22G09G2300/06G09G2310/0267G09G2320/0223
    • A scanning circuit and an image display device in which the influence of losses in a signal path to scanning wiring and a scanning signal output circuit can be reduced. By considering matrix drive in which one row is driven at a time and two or more of the rows are not simultaneously driven, the 480 rows are divided into six modules and one feedback circuit is provided in correspondence with each module to perform feedback control of the output buffers corresponding to 80 rows. An output from a switch is amplified by an operational amplifier and is input as a compensation signal to all the output buffers by an output voltage compensation circuit. Compensation for a voltage drop is made by using the compensation signal for an increase in voltage such that the apparent voltage drop due to the output current is limited to a small value.
    • 扫描电路和图像显示装置,其中可以减少信号路径中对扫描布线和扫描信号输出电路的损耗的影响。 通过考虑其中一行被驱动并且两个或更多个行不被同时驱动的矩阵驱动,将480行分成六个模块,并且与每个模块对应地提供一个反馈电路以执行对 输出缓冲区对应80行。 开关的输出由运算放大器放大,并通过输出电压补偿电路作为补偿信号输入到所有的输出缓冲器。 通过使用补偿信号来提高电压降的补偿,使得由于输出电流引起的视在电压降被限制在较小的值。