公开(公告)号：US09940879B2

公开(公告)日：2018-04-10

申请号：US13253739

申请日：2011-10-05

申请人： Shawn Robert Gettemy ,  Joshua Grey Wurzel ,  Jean-Pierre Simon Guillou ,  Ming Xu ,  David Andrew Doyle

发明人： Shawn Robert Gettemy ,  Joshua Grey Wurzel ,  Jean-Pierre Simon Guillou ,  Ming Xu ,  David Andrew Doyle

IPC分类号： G09G3/36 ,  G09G3/34

CPC分类号： G09G3/3406 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/145

摘要： The present disclosure generally relates to systems and techniques for calibrating displays to improve the white point uniformity between similar type devices. In one embodiment, a backlight includes multiple strings of LEDs, where each string is driven by a separate driver, or driver channel. Each string may be separately tested at a base current to determine its emitted chromaticity, and values indicative of the emitted chromaticities may be stored within the backlight as calibration values. The calibration values may then be used to determine the driving strength for each string that allows the display to produce the target white point when the light from the strings is mixed. Further, in certain embodiments, adjustments also may be made to the LCD panel based on the emitted chromaticities at the base current.

公开(公告)号：US20130088522A1

公开(公告)日：2013-04-11

申请号：US13253739

申请日：2011-10-05

申请人： Shawn Robert Gettemy ,  Joshua Grey Wurzel ,  Jean-Pierre Simon Guillou ,  Ming Xu ,  David Andrew Doyle

发明人： Shawn Robert Gettemy ,  Joshua Grey Wurzel ,  Jean-Pierre Simon Guillou ,  Ming Xu ,  David Andrew Doyle

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3406 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/145

摘要： The present disclosure generally relates to systems and techniques for calibrating displays to improve the white point uniformity between similar type devices. In one embodiment, a backlight includes multiple strings of LEDs, where each string is driven by a separate driver, or driver channel. Each string may be separately tested at a base current to determine its emitted chromaticity, and values indicative of the emitted chromaticities may be stored within the backlight as calibration values. The calibration values may then be used to determine the driving strength for each string that allows the display to produce the target white point when the light from the strings is mixed. Further, in certain embodiments, adjustments also may be made to the LCD panel based on the emitted chromaticities at the base current.

摘要翻译： 本公开通常涉及用于校准显示器以改善类似类型设备之间的白点均匀性的系统和技术。 在一个实施例中，背光源包括多个LED串，其中每个串由单独的驱动器或驱动器通道驱动。 每个串可以在基极电流下单独测试以确定其发射的色度，并且指示发射的色度的值可以作为校准值存储在背光中。 然后可以使用校准值来确定当来自弦的光被混合时允许显示器产生目标白点的每个串的驱动强度。 此外，在某些实施例中，也可以基于基极电流处的发射色度来调整LCD面板。