公开(公告)号：US08570269B2

公开(公告)日：2013-10-29

申请号：US12003628

申请日：2007-12-28

申请人： Hyeon-Seung Kim ,  Jong-Ho Lim

发明人： Hyeon-Seung Kim ,  Jong-Ho Lim

IPC分类号： G09G3/36

CPC分类号： G09G3/342 ,  G09G3/2014 ,  G09G2310/024 ,  G09G2320/0646 ,  G09G2320/066

摘要： Disclosed is a technology for implementing a high contrast ratio that cannot be implemented by only an analog dimming or burst dimming method, by selectively turning off lamps on the LCD device, comprising: a control unit outputting control signals and video data for controlling a driving of a gate driving unit and a data driving unit, and brightness control signals; the gate driving unit for supplying scan signals to gate lines on a liquid crystal panel by controlling of the control unit and the data driving unit for supplying a data voltage to data lines; the liquid crystal panel having liquid crystal cells arranged in a matrix type and thin film transistors formed at each intersection between the data lines and the gate lines; a backlight driving unit for controlling an optical amount by controlling a tube current supplied to lamps on a backlight unit and for selectively turning off the lamps when the brightness control signals are inputted; and the backlight unit for implementing a high brightness with respect to a dark area by irradiating a backlight having a brightness corresponding to light from the lamps emitted by the backlight driving unit toward the liquid crystal panel, and turning off some of the lamps.

摘要翻译： 公开了通过选择性地关闭LCD装置上的灯来实现不能仅通过模拟调光或脉冲串调光方式实现的高对比度的技术，包括：控制单元，其输出用于控制驱动的控制信号和视频数据 门驱动单元和数据驱动单元，以及亮度控制信号; 栅极驱动单元，用于通过控制控制单元和用于向数据线提供数据电压的数据驱动单元向液晶面板上的栅极线提供扫描信号; 具有以矩阵型排列的液晶单元的液晶面板和形成在数据线与栅极线之间的每个交点处的薄膜晶体管; 背光驱动单元，用于通过控制提供给背光单元上的灯的管电流并且当输入亮度控制信号时选择性地关闭灯来控制光量; 以及背光单元，用于通过将具有与由背光驱动单元发射的灯的光相对应的亮度的背光照射到液晶面板，并且关闭一些灯来实现相对于暗区域的高亮度。

公开(公告)号：US20080238859A1

公开(公告)日：2008-10-02

申请号：US12003628

申请日：2007-12-28

申请人： Hyeon-Seung Kim ,  Jong-Ho Lim

发明人： Hyeon-Seung Kim ,  Jong-Ho Lim

IPC分类号： G09G3/36

CPC分类号： G09G3/342 ,  G09G3/2014 ,  G09G2310/024 ,  G09G2320/0646 ,  G09G2320/066

摘要： Disclosed is a technology for implementing a high contrast ratio that cannot be implemented by only an analog dimming or burst dimming method, by selectively turning off lamps on the LCD device, comprising: a control unit outputting control signals and video data for controlling a driving of a gate driving unit and a data driving unit, and brightness control signals; the gate driving unit for supplying scan signals to gate lines on a liquid crystal panel by controlling of the control unit and the data driving unit for supplying a data voltage to data lines; the liquid crystal panel having liquid crystal cells arranged in a matrix type and thin film transistors formed at each intersection between the data lines and the gate lines; a backlight driving unit for controlling an optical amount by controlling a tube current supplied to lamps on a backlight unit and for selectively turning off the lamps when the brightness control signals are inputted; and the backlight unit for implementing a high brightness with respect to a dark area by irradiating a backlight having a brightness corresponding to light from the lamps emitted by the backlight driving unit toward the liquid crystal panel, and turning off some of the lamps.

摘要翻译： 公开了通过选择性地关闭LCD装置上的灯来实现仅通过模拟调光或脉冲调制方式不能实现的高对比度的技术，包括：控制单元，其输出用于控制驱动的控制信号和视频数据 门驱动单元和数据驱动单元，以及亮度控制信号; 栅极驱动单元，用于通过控制控制单元和用于向数据线提供数据电压的数据驱动单元向液晶面板上的栅极线提供扫描信号; 具有以矩阵型排列的液晶单元的液晶面板和形成在数据线与栅极线之间的每个交点处的薄膜晶体管; 背光驱动单元，用于通过控制提供给背光单元上的灯的管电流并且当输入亮度控制信号时选择性地关闭灯来控制光量; 以及背光单元，用于通过将具有与由背光驱动单元发射的灯的光相对应的亮度的背光照射到液晶面板，并且关闭一些灯来实现相对于暗区域的高亮度。