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公开(公告)号:US20080266276A1
公开(公告)日:2008-10-30
申请号:US12109288
申请日:2008-04-24
申请人: Sung-Pil CHOI , Do-Youn KIM , Jae-Wook KWON , Ki-Won SEO
发明人: Sung-Pil CHOI , Do-Youn KIM , Jae-Wook KWON , Ki-Won SEO
IPC分类号: G06F3/038
CPC分类号: G09G3/3685 , G09G3/3696 , G09G2310/027 , G09G2320/0233
摘要: A display apparatus including a display driver. The data driver includes a converter to receive and convert image data in digital form into data voltages in analog form, and to provide the data voltages to output buffers. The output buffers receive and buffer the data voltages based on bias voltages generated as part of a feedback path between a bias voltage control circuit and the output buffers. The data voltages are provided to a display part. Before the data voltages output from the output buffers are provided to the display part, the bias voltage control part receives data voltage from the output buffers to count a slew rate of the data voltage, and varies the voltage level of the bias voltage based on the counted result of the slew rate, thereby providing feedback to the output buffers. Accordingly, differences of the slew rate between the data voltages output from the output buffers may be decreased.
摘要翻译: 一种显示装置,包括显示驱动器。 数据驱动器包括用于以数字形式接收图像数据并以模拟形式将其转换为数据电压的转换器,并将数据电压提供给输出缓冲器。 输出缓冲器基于作为偏置电压控制电路和输出缓冲器之间的反馈路径的一部分而产生的偏置电压来接收和缓冲数据电压。 数据电压被提供给显示部分。 在从输出缓冲器输出的数据电压被提供给显示部分之前,偏置电压控制部分从输出缓冲器接收数据电压以对数据电压的转换速率进行计数,并且基于该偏置电压来改变偏置电压的电压电平 计算转换速率的结果,从而向输出缓冲器提供反馈。 因此,可以减小从输出缓冲器输出的数据电压之间的转换速率的差异。