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CURRENT DRIVE CIRCUIT AND DISPLAY COMPRISING THE SAME, PIXEL CIRCUIT, AND DRIVE METHOD

机译:电流驱动电路和显示,包括相同,像素电路和驱动方法

摘要

A display device including a current drive circuit capable of stably and correctly supplying an intended current to a light emitting element of each pixel without being affected by variations in characteristics of an active element inside the pixel and as a result capable of displaying a high quality image, wherein each pixel comprises a receiving use transistor (TFT3) for fetching a signal current (Iw) from a data line (DATA) when a scanning line (SCAN-A) is selected, a conversion use transistor (TFT1) for once converting a current level of a fetched signal current (Iw) to a voltage level and holding the same, and a drive use transistor (TFT2) for passing a drive current having a current level in accordance with the held voltage level through a light emitting element (OLED). The conversion use thin film transistor (TFT1) generates a converted voltage level at its own gate by passing the signal current (Iw) fetched by the (TFT3) through its own channel. A capacitor (C) holds the voltage level created at the gate of the (TFT1). The (TFT2) passes the drive current having a current level in accordance with the held voltage level through the light emitting element (OLED). IMAGE
机译:一种显示装置,包括电流驱动电路,该电流驱动电路能够稳定且正确地向每个像素的发光元件提供预期的电流,而不受像素内部有源元件的特性变化的影响,从而能够显示高质量的图像,其中每个像素包括用于选择扫描线(SCAN-A)时从数据线(DATA)提取信号电流(Iw)的接收用晶体管(TFT3),用于一次转换像素的转换用晶体管(TFT1)所获取的信号电流(Iw)的电流电平保持为电压电平,并且驱动用晶体管(TFT2)用于使具有与保持的电压电平相对应的电流电平的驱动电流通过发光元件(OLED) )。转换用薄膜晶体管(TFT1)通过将由(TFT3)获取的信号电流(Iw)通过其自身的通道,在其自身的栅极处产生转换的电压电平。电容器(C)保持在(TFT1)的栅极产生的电压电平。 (TFT2)使具有与保持的电压电平相对应的电流电平的驱动电流通过发光元件(OLED)。 <图像>

著录项

  • 公开/公告号KR100861756B1

    专利类型

  • 公开/公告日2008-10-06

    原文格式PDF

  • 申请/专利权人

    申请/专利号KR20017003207

  • 发明设计人 유모토아키라;

    申请日2001-03-13

  • 分类号G09G3/30;

  • 国家 KR

  • 入库时间 2022-08-21 19:51:34

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