会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • LCD BACKLIGHT DRIVER
    • 液晶背光驱动器
    • US20070182342A1
    • 2007-08-09
    • US11461808
    • 2006-08-02
    • Mark HagenEric Oettinger
    • Mark HagenEric Oettinger
    • H05B41/16
    • H05B41/2858
    • Three example inverter designs are described that can be tailored to drive from one to dozens of lamps of a backlight for a liquid crystal display. For each design the lamps are driven by a 40 kHz to 60 kHz sine wave. The lamp voltage is ˜1200V to “strike” the lamps and ˜600V to produce the optimal 5 mA in each lamp. The designs are: a Royer linear oscillator driven by a buck converter stage, a push-pull inverter that drives the high voltage transformer directly, and a class-D amplifier that produces the drive sine wave using a pulse width modulation technique.
    • 描述了三个示例性的逆变器设计,其可以被定制为从一个到数十个用于液晶显示器的背光灯。 对于每个设计,灯由40 kHz至60 kHz的正弦波驱动。 灯电压为〜1200V,以“击打”灯和〜600V,以在每个灯中产生最佳5mA。 设计是:由降压转换器级驱动的罗耶线性振荡器,直接驱动高压变压器的推挽式逆变器,以及使用脉宽调制技术产生驱动正弦波的D类放大器。
    • 2. 发明申请
    • SYSTEMS AND METHODS FOR BACKLIGHT DRIVING
    • 用于背光驱动的系统和方法
    • US20070103093A1
    • 2007-05-10
    • US11552697
    • 2006-10-25
    • Mark HagenEric Oettinger
    • Mark HagenEric Oettinger
    • H05B41/36
    • H05B41/2828H05B41/2824H05B41/382
    • Various systems and methods for LCD backlight control are disclosed herein. For example, some embodiments of the present invention provide an LCD backlight circuit with an analog inverter circuit that provides a drive voltage to a lamp. A current traversing the lamp is sensed and provided to a digital control circuit. Based on the sensed current, the digital control circuit generates a control signal that is fed back to the analog inverter circuit. In some cases, the digital control circuit is used to cause a gradual increase in voltage applied to the lamp to achieve ignition of the lamp. In other cases, the digital control is used to provide a pre-distorted sine wave that attenuates one or more harmonics introduced into the system by the non-linearities of the lamp.
    • 本文公开了用于LCD背光控制的各种系统和方法。 例如,本发明的一些实施例提供了具有向灯提供驱动电压的模拟反相器电路的LCD背光电路。 检测到穿过灯的电流并将其提供给数字控制电路。 基于感测电流,数字控制电路产生反馈到模拟反相器电路的控制信号。 在一些情况下,数字控制电路用于使灯施加的电压逐渐增加以实现灯的点燃。 在其他情况下,数字控制用于提供预失真的正弦波,其通过灯的非线性衰减引入到系统中的一个或多个谐波。