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    • 1. 发明授权
    • Image display device, image display panel, panel drive device, and method of driving image display panel
    • 图像显示装置,图像显示面板,面板驱动装置以及驱动图像显示面板的方法
    • US07773084B2
    • 2010-08-10
    • US10568538
    • 2004-08-20
    • Naoyuki ItakuraHiroaki IchikawaToshikazu Maekawa
    • Naoyuki ItakuraHiroaki IchikawaToshikazu Maekawa
    • G06G3/038
    • G09G3/2011G09G3/2074G09G3/3607G09G3/3648G09G3/3677G09G3/3688G09G2310/0251G09G2310/0297G09G2320/0223
    • In the present invention, during an 1H period excluding a blanking period (1HB) constituting a line display period, pixel data pulses of RGB (61B to 61R) are successively supplied for each color to corresponding signal lines for the color display of one pixel line. A control circuit (40) of select switches connected to the signal lines (6-1 to 6-n) supplies permission pulses (63B to 63R) for the supply of data to signal lines when displaying one color among RGB to select switches (TMG), and turns on the select switch (TMG) of the signal line corresponding to another color to be displayed later in the same line display period during the period of this application by a precharge pulse (62G or 62R) having a time duration shorter than the supply time of the pixel data of the other color (T2 or T3) to previously precharge the signal line of the other color to the predetermined potential. Due to this, sufficient precharging of a signal line, which became difficult due to an increase of a load capacitance of the signal line due to higher definition of the image display device and an increase in the speed of a drive clock thereof, can be achieved.
    • 在本发明中,除了构成行显示期间的消隐期间(1HB)以外的1H期间内,依次向每个颜色的像素数据脉冲供给各色用于一个像素线的彩色显示的相应信号线 。 连接到信号线(6-1至6-n)的选择开关的控制电路(40)提供允许脉冲(63B至63R),用于在RGB之间显示一种颜色以选择开关(TMG ),并且在该应用期间的相同行显示周期中,通过具有时间短于的持续时间的预充电脉冲(62G或62R),打开与其他颜色相对应的信号线的选择开关(TMG) 其他颜色(T2或T3)的像素数据的供给时间预先将另一种颜色的信号线预充电到预定电位。 由此,可以实现由于图像显示装置的更高清晰度而导致的由于信号线的负载电容的增加而导致的信号线的充分的预充电以及其驱动时钟的速度的增加。 。
    • 2. 发明申请
    • Image Display Device, Image Display Panel, Panel Drive Device, and Method of Driving Image Display Panel
    • 图像显示装置,图像显示面板,面板驱动装置以及驱动图像显示面板的方法
    • US20080136810A1
    • 2008-06-12
    • US10568538
    • 2004-08-20
    • Naoyuki ItakuraHiroaki IchikawaToshikazu Maekawa
    • Naoyuki ItakuraHiroaki IchikawaToshikazu Maekawa
    • G06F3/038
    • G09G3/2011G09G3/2074G09G3/3607G09G3/3648G09G3/3677G09G3/3688G09G2310/0251G09G2310/0297G09G2320/0223
    • In the present invention, during a 1H period excluding a blanking period (1HB) constituting a line display period, pixel data pulses of RGB (61B to 61R) are successively supplied for each color to corresponding signal lines for color display of one pixel line. A control circuit (40) of select switches connected to the signal lines (6-1 to 6-n) supplies permission pulses (63B to 63R) for supply of data to signal lines when displaying one color among RGB to select switches (TMG), and turns on the select switch (TMG) of the signal line corresponding to another color to be displayed later in the same line display period during the period of this application by a precharge pulse (62G or 62R) having a time duration shorter than the supply time of the pixel data of the other color (T2 or T3) to previously precharge the signal line of the other color to the predetermined potential. Due to this, sufficient precharging of a signal line which became difficult due to an increase of a load capacitance of the signal line due to higher definition of the image display device and increase in speed of a drive clock thereof can be achieved.
    • 在本发明中,除了构成行显示期间的消隐期间(1HB)以外的1HH期间内,依次向每个颜色的RGB(61B〜61R)的像素数据脉冲供给相应的信号线, 一个像素线。 连接到信号线(6-1至6-n)的选择开关的控制电路(40)提供允许脉冲(63B至63R),用于在RGB之间显示一种颜色以选择开关时向信号线提供数据 TMG),并且在该应用期间,在具有时间的预充电脉冲(62G或62R)的同一行显示周期中,打开与其他颜色对应的信号线的选择开关(TMG) 持续时间短于其他颜色(T 2或T 3)的像素数据的供给时间,以预先将另一种颜色的信号线预充电到预定电位。 由此,可以实现由于图像显示装置的高清晰度和驱动时钟的速度的增加而导致由于信号线的负载电容的增加而变得困难的信号线的充分的预充电。
    • 5. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US06795050B1
    • 2004-09-21
    • US09383923
    • 1999-08-26
    • Masumitsu InoToshikazu MaekawaYoshiharu NakajimaHiroaki Ichikawa
    • Masumitsu InoToshikazu MaekawaYoshiharu NakajimaHiroaki Ichikawa
    • G09G336
    • G09G3/3688G09G3/3614G09G3/3648G09G2310/0297G09G2320/0209
    • An active-matrix-type liquid crystal display device supplies signal potentials to signal lines of a liquid crystal display panel according to a time-division drive method using time-division switches. The low-level potential of select pulses to be supplied from a select pulse generating circuit to CMOS analog switches of the time-division switches is set to be lower than the low-level potential of a signal potential output from a horizontal drive circuit. With this arrangement, even if the signal potential of a non-selected signal line is decreased due to the crosstalk of a signal potential from a selected signal line to the non-selected signal line, the generation of insufficient contrast and non-uniformity of the luminance in the horizontal direction can be prevented. As a consequence, a high image quality is maintained.
    • 根据使用时分开关的时分驱动方法,有源矩阵型液晶显示装置向液晶显示面板的信号线提供信号电位。 将从选择脉冲发生电路提供的选择脉冲的低电平电位设置为低于从水平驱动电路输出的信号电位的低电位电位。 利用这种布置,即使由于从所选择的信号线到未选择的信号线的信号电位的串扰,未被选择的信号线的信号电位降低,产生不足的对比度和不均匀性 可以防止水平方向的亮度。 因此,保持高图像质量。
    • 10. 发明申请
    • Apparatus and method for driving backlight unit
    • 用于驱动背光单元的装置和方法
    • US20090021178A1
    • 2009-01-22
    • US10571278
    • 2005-07-08
    • Norimasa FurukawaHiroaki IchikawaKenichi Kikuchi
    • Norimasa FurukawaHiroaki IchikawaKenichi Kikuchi
    • H05B41/30
    • H05B33/0815G09G3/3413G09G3/342G09G2320/041G09G2320/0633G09G2320/064G09G2360/145H05B33/0818H05B33/0857H05B33/0872
    • The present invention is directed to a drive apparatus for a backlight unit (20) in which plural LED (Light Emitting Diode) elements are cascade-connected every three primary colors, which comprises a signal generating unit (44) for generating a signal having an arbitrary amplitude, an adjustment unit (50) for adjusting light emission quantities of groups of LED elements (30) on the basis of the signal which has been generated by the signal generating unit (44), a voltage applying unit (41) for applying a predetermined voltage every the groups of LED elements (30), light emission quantity detecting units (33) for detecting quantities of rays of light which have been emitted from the groups of LED elements (30), calorific value detecting units (32) for detecting calorific values emitted from the groups of LED elements in accordance with the voltage which has been applied to the voltage applying unit (41), and a control unit (50) for controlling the signal generating unit (44) on the basis of light emission quantities which have been detected by the light emission quantity detecting units (33) and calorific values which have been detected by the calorific value detecting units (32).
    • 本发明涉及一种用于背光单元(20)的驱动装置,其中多个LED(发光二极管)元件每三原色级联连接,该信号产生单元(44)用于产生具有 根据由信号生成部(44)生成的信号,调整LED元件组(30)的发光量的调整部(50),施加电压施加部(41) 每组LED元件(30)中的预定电压,用于检测从LED元件组(30)发射的光线的光量的发光量检测单元(33),用于 根据施加到电压施加单元(41)的电压来检测从LED元件组发射的发热值;以及控制单元(50),用于控制在基座上的信号产生单元(44) 由发光量检测单元(33)检测出的发光量和由发热量检测单元(32)检测出的发热量。