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    • 4. 发明申请
    • TEMPERATURE BASED WHITE POINT CONTROL IN BACKLIGHTS
    • 背光温度基于白点控制
    • US20100244701A1
    • 2010-09-30
    • US12410164
    • 2009-03-24
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • H01J61/52
    • G02F1/133603G09G3/3413G09G3/3426G09G2320/041G09G2320/048G09G2320/0626G09G2320/0666G09G2360/145
    • Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode based backlight. In one embodiment, the backlight may include two or more strings of light emitting diodes, each driven at a respective driving strength. Each string may include light emitting diodes from a different color bin, and the respective driving strengths may be adjusted, for example, through pulse width modulation or amplitude modulation, to maintain the target white point. In certain embodiments, the driving strengths may be adjusted to compensate for shifts in the white point that may occur due to temperature or aging. A controller may adjust the driving strengths based on feedback from a temperature sensor, from an optical sensor, from a user input, or from calibration data included within the backlight or system.
    • 提供了用于在基于发光二极管的背光源上维持目标白点的系统,方法和装置。 在一个实施例中,背光源可以包括两个或更多个发光二极管串,每个发光二极管以相应的驱动强度驱动。 每个串可以包括来自不同颜色仓的发光二极管,并且可以例如通过脉冲宽度调制或幅度调制来调整相应的驱动强度,以维持目标白点。 在某些实施例中,可以调整驱动强度以补偿由于温度或老化而可能发生的白点偏移。 控制器可以基于来自温度传感器的反馈,来自光学传感器,来自用户输入的反馈或来自包括在背光或系统内的校准数据来调整驱动强度。
    • 7. 发明授权
    • Temperature based white point control in backlights
    • 背光中基于温度的白点控制
    • US08575865B2
    • 2013-11-05
    • US12410164
    • 2009-03-24
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • H05B37/02
    • G02F1/133603G09G3/3413G09G3/3426G09G2320/041G09G2320/048G09G2320/0626G09G2320/0666G09G2360/145
    • Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode based backlight. In one embodiment, the backlight may include two or more strings of light emitting diodes, each driven at a respective driving strength. Each string may include light emitting diodes from a different color bin, and the respective driving strengths may be adjusted, for example, through pulse width modulation or amplitude modulation, to maintain the target white point. In certain embodiments, the driving strengths may be adjusted to compensate for shifts in the white point that may occur due to temperature or aging. A controller may adjust the driving strengths based on feedback from a temperature sensor, from an optical sensor, from a user input, or from calibration data included within the backlight or system.
    • 提供了用于在基于发光二极管的背光源上维持目标白点的系统,方法和装置。 在一个实施例中,背光源可以包括两个或更多个发光二极管串,每个发光二极管以相应的驱动强度驱动。 每个串可以包括来自不同颜色仓的发光二极管,并且可以例如通过脉冲宽度调制或幅度调制来调整相应的驱动强度,以维持目标白点。 在某些实施例中,可以调整驱动强度以补偿由于温度或老化而可能发生的白点偏移。 控制器可以基于来自温度传感器的反馈,来自光学传感器,来自用户输入的反馈或来自包括在背光或系统内的校准数据来调整驱动强度。
    • 8. 发明授权
    • Aging based white point control in backlights
    • 背光老化的白点控制
    • US08390562B2
    • 2013-03-05
    • US12410204
    • 2009-03-24
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • Cheng ChenJun QiJohn Z. ZhongVictor H. YinWei Chen
    • G09G3/36
    • G09G3/3413G09G3/3426G09G2320/0242G09G2320/041G09G2320/043G09G2320/0606G09G2320/064G09G2320/0666G09G2360/145
    • Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode based backlight. In one embodiment, the backlight may include two or more strings of light emitting diodes, each driven at a respective driving strength. Each string may include light emitting diodes from a different color bin, and the respective driving strengths may be adjusted, for example, through pulse width modulation or amplitude modulation, to maintain the target white point. In certain embodiments, the driving strengths may be adjusted to compensate for shifts in the white point that may occur due to temperature or aging. A controller may adjust the driving strengths based on feedback from a temperature sensor, from an optical sensor, from a user input, or from calibration data included within the backlight or system.
    • 提供了用于在基于发光二极管的背光源上维持目标白点的系统,方法和装置。 在一个实施例中,背光源可以包括两个或更多个发光二极管串,每个发光二极管以相应的驱动强度驱动。 每个串可以包括来自不同颜色仓的发光二极管,并且可以例如通过脉冲宽度调制或幅度调制来调整相应的驱动强度,以维持目标白点。 在某些实施例中,可以调整驱动强度以补偿由于温度或老化而可能发生的白点偏移。 控制器可以基于来自温度传感器的反馈,来自光学传感器,来自用户输入的反馈或来自包括在背光或系统内的校准数据来调整驱动强度。