Method of overdriving LCD device and overdriving circuit for LCD device
    11.
    发明申请
    Method of overdriving LCD device and overdriving circuit for LCD device 审中-公开
    LCD装置过驱动方法及LCD驱动电路

    公开(公告)号:US20060290642A1

    公开(公告)日:2006-12-28

    申请号:US11475023

    申请日:2006-06-27

    IPC分类号: G09G3/36

    摘要: An overdriving circuit for a liquid crystal display device, includes a system signal treating unit configured to treat an image data to generate a present frame data, a frame memory configured to store a former frame data used for treating the image data in the system signal treating unit, an overdriving unit configured to modulate the present frame data using the frame memory and a modulation data of a look-up table, and a liquid crystal panel configured to receive the modulated frame data and to display images.

    摘要翻译: 一种用于液晶显示装置的过驱动电路,包括:系统信号处理单元,被配置为处理图像数据以产生当前帧数据;帧存储器,被配置为存储用于处理系统信号处理中的图像数据的前一帧数据 单元,被配置为使用帧存储器调制当前帧数据和查找表的调制数据的过驱动单元和被配置为接收调制帧数据并显示图像的液晶面板。

    Method for dividing display area for local dimming, liquid crystal display device using the same, and method for driving the liquid crystal display device
    12.
    发明授权
    Method for dividing display area for local dimming, liquid crystal display device using the same, and method for driving the liquid crystal display device 有权
    用于分割局部调光的显示区域的方法,使用其的液晶显示装置以及用于驱动液晶显示装置的方法

    公开(公告)号:US08570349B2

    公开(公告)日:2013-10-29

    申请号:US12827537

    申请日:2010-06-30

    IPC分类号: G09G5/10 G09G3/36

    摘要: A method for dividing a display area for local dimming of LCD is disclosed. The method includes determining an initial number of pixels per data analysis area and a total number of residual pixels, calculating a first residual pixel sum of a current data analysis area using the total number of residual pixels and a second residual pixel sum of a previous data analysis area, determining whether to assign a residual pixel to the current data analysis area using the first residual pixel sum and the total number of data analysis areas, calculating a second residual sum of the current data analysis area whether to assign a residual pixel, and repeating the calculation above until the data analysis area index is a last data analysis area index.

    摘要翻译: 公开了一种用于划分LCD的局部调光显示区域的方法。 该方法包括:确定每个数据分析区域的像素的初始数目和残余像素的总数,使用剩余像素的总数和先前数据的第二残差像素和来计算当前数据分析区域的第一残差像素和 分析区域,使用第一残差像素和数据分析区域的总数确定是否向当前数据分析区域分配残差像素,计算当前数据分析区域是否分配残差像素的第二残差和,以及 重复上述计算直到数据分析区域索引为最后数据分析区域索引。

    Method of driving liquid crystal display device

    公开(公告)号:US08363003B2

    公开(公告)日:2013-01-29

    申请号:US12289212

    申请日:2008-10-22

    IPC分类号: G09G3/36

    摘要: A method of driving a liquid crystal display device includes inputting source image data, each of which has one of m gray level values, wherein m is a natural number, defining T error data from the source image data, wherein the error data have top k gray level values, and T and k are a natural number, generating conversion image data having larger gray level values than the source image data using one having a largest gray level value from the source image data excluding the error data, inputting the conversion image data to a liquid crystal panel, controlling a brightness of a backlight unit in accordance with the conversion image data, forming a bitmap corresponding to the conversion image data, wherein the bitmap shows positional distribution of pixels with the error data, counting error areas by scanning the bitmap, wherein each of the error areas includes the predetermined number of the pixels having the error data, and controlling the T according to the number of the error.

    LOCAL DIMMING DRIVING METHOD AND DEVICE OF LIQUID CRYSTAL DISPLAY DEVICE
    14.
    发明申请
    LOCAL DIMMING DRIVING METHOD AND DEVICE OF LIQUID CRYSTAL DISPLAY DEVICE 有权
    本地调光驱动方法和液晶显示装置的装置

    公开(公告)号:US20110141166A1

    公开(公告)日:2011-06-16

    申请号:US12962710

    申请日:2010-12-08

    IPC分类号: G09G3/36 G09G5/10

    摘要: Disclosed herein is a local dimming driving method and device of a Liquid Crystal Display (LCD) device, which is capable of preventing color change due to gray scale saturation when data is compensated while enabling local dimming. The local dimming driving method of the LCD device includes detecting maximum values per pixel from input image data, analyzing the maximum values per pixel on a block-by-block basis, and determining local dimming values per block according to the analysis result, calculating a first gain value using the local dimming values per block, calculating a maximum gain value per pixel using the maximum value per pixel as a second gain value, selecting a smaller value of the first and second gain values as a final gain value, compensating the input image data using the final gain value, and controlling luminance of a backlight unit on the block-by-block basis using the local dimming value per block.

    摘要翻译: 这里公开了一种液晶显示器(LCD)器件的局部调光驱动方法和装置,其能够在数据被补偿同时实现局部调光的同时防止灰度饱和引起的颜色变化。 LCD装置的局部调光驱动方法包括从输入图像数据检测每像素的最大值,逐块分析每像素的最大值,并根据分析结果确定每个块的局部调光值,计算 使用每块的局部调光值计算第一增益值,使用每像素的最大值计算每像素的最大增益值作为第二增益值,将第一和第二增益值的较小值选择为最终增益值,补偿输入 使用最终增益值的图像数据,并且使用每个块的局部调光值逐块地控制背光单元的亮度。

    Local dimming driving method and device of liquid crystal display device
    15.
    发明授权
    Local dimming driving method and device of liquid crystal display device 有权
    液晶显示装置的局部调光驱动方法及装置

    公开(公告)号:US09087485B2

    公开(公告)日:2015-07-21

    申请号:US12962710

    申请日:2010-12-08

    IPC分类号: G09G3/36 G09G3/34

    摘要: Disclosed herein is a local dimming driving method and device of a Liquid Crystal Display (LCD) device, which is capable of preventing color change due to gray scale saturation when data is compensated while enabling local dimming. The local dimming driving method of the LCD device includes detecting maximum values per pixel from input image data, analyzing the maximum values per pixel on a block-by-block basis, and determining local dimming values per block according to the analysis result, calculating a first gain value using the local dimming values per block, calculating a maximum gain value per pixel using the maximum value per pixel as a second gain value, selecting a smaller value of the first and second gain values as a final gain value, compensating the input image data using the final gain value, and controlling luminance of a backlight unit on the block-by-block basis using the local dimming value per block.

    摘要翻译: 这里公开了一种液晶显示器(LCD)器件的局部调光驱动方法和装置,其能够在数据被补偿同时实现局部调光的同时防止灰度饱和引起的颜色变化。 LCD装置的局部调光驱动方法包括从输入图像数据检测每像素的最大值,逐块分析每像素的最大值,并根据分析结果确定每个块的局部调光值,计算 使用每块的局部调光值计算第一增益值,使用每像素的最大值计算每像素的最大增益值作为第二增益值,将第一和第二增益值的较小值选择为最终增益值,补偿输入 使用最终增益值的图像数据,并且使用每个块的局部调光值逐块地控制背光单元的亮度。

    Method of driving liquid crystal display device
    16.
    发明申请
    Method of driving liquid crystal display device 有权
    驱动液晶显示装置的方法

    公开(公告)号:US20090109170A1

    公开(公告)日:2009-04-30

    申请号:US12289212

    申请日:2008-10-22

    IPC分类号: G09G3/36

    摘要: A method of driving a liquid crystal display device includes inputting source image data, each of which has one of m gray level values, wherein m is a natural number, defining T error data from the source image data, wherein the error data have top k gray level values, and T and k are a natural number, generating conversion image data having larger gray level values than the source image data using one having a largest gray level value from the source image data excluding the error data, inputting the conversion image data to a liquid crystal panel, controlling a brightness of a backlight unit in accordance with the conversion image data, forming a bitmap corresponding to the conversion image data, wherein the bitmap shows positional distribution of pixels with the error data, counting error areas by scanning the bitmap, wherein each of the error areas includes the predetermined number of the pixels having the error data, and controlling the T according to the number of the error.

    摘要翻译: 驱动液晶显示装置的方法包括输入源图像数据,每个源图像数据具有m个灰度值中的一个,其中m是自然数,其中源自源图像数据定义了T个误差数据,其中误差数据具有顶部k 灰度值,T和k是自然数,使用来自除了错误数据的源图像数据具有最大灰度值的一个,生成具有比源图像数据更大灰度值的转换图像数据,输入转换图像数据 根据转换图像数据控制背光单元的亮度,形成与转换图像数据相对应的位图,其中位图显示具有误差数据的像素的位置分布,通过扫描来计算误差区域 位图,其中每个错误区域包括具有错误数据的预定数量的像素,并且根据错误的数量来控制T。