【摘要】 作为液晶显示主要部分之一的电源电路，直接控制提供给液晶驱动芯片的偏压。电源电路提供的液晶偏置电压在液晶显示对比度和显示灰度的控制中起着重要的作用。Ｓ－８３３０／８３３１系列芯片是日本ＳＥＩＫＯ公司生产的用于提供液晶偏压的电源芯片。其内部有８位移位寄存器，用数字方式调整输出电压。Ｓ－８３３０／８３３１系列芯片的小体积、低功耗、高集成度等特点使其适用于电池供电的便携式设备中。更多还原

【Abstract】 LCD has been widely applied to display system. As a main part of LCD, the supply circuit directly controls the driving circuit level of LCD. The level of supply affects the contrast and grey of LCD. The application of 8-8330 in LCD is introduced. It has a electric volume system which include 8-bit shift register and 8-bit latch for digital adjustment of the output voltage. As a result, it is convenient to adjust the output voltage using software. 8-8330 offers high-level integration to save space, reduce power consumption, and increase battery life, which make it an excellent choice for battery powered portable equipment.更多还原