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    • 1. 发明授权
    • Method of supplying power, power supply apparatus for performing the method and display apparatus having the apparatus
    • 供电方法,用于执行该方法的电源装置和具有该装置的显示装置
    • US08625310B2
    • 2014-01-07
    • US12574232
    • 2009-10-06
    • Hyeon-Yong Jang
    • Hyeon-Yong Jang
    • H02M3/335H02M7/537
    • H02M1/4241G09G3/3696H02M1/4258Y02B70/126
    • A power supply apparatus includes an AC-DC rectifier, a transformer, a feedback inductor, a resonant unit, and a primary and auxiliary switch. The AC-DC rectifier rectifies an input voltage. The transformer includes a primary coil having a first primary coil and an isolated second primary coil, and transforms a first voltage of the primary coil into a second voltage of the secondary coil. The feedback inductor is connected to a tap between the first primary coil and second primary coil and an output of the AC-DC rectifier. The resonance unit is connected in parallel with the secondary coil and is configured to output an output voltage by rectifying the second voltage provided from the secondary coil. The primary switch and secondary switch are connected in parallel between the transformer and AC-DC rectifier.
    • 电源装置包括AC-DC整流器,变压器,反馈电感器,谐振单元以及初级和辅助开关。 AC-DC整流器整流输入电压。 变压器包括具有第一初级线圈和隔离的第二初级线圈的初级线圈,并将初级线圈的第一电压转换成次级线圈的第二电压。 反馈电感器连接到第一初级线圈和第二初级线圈之间的抽头以及AC-DC整流器的输出端。 谐振单元与次级线圈并联连接,并且被配置为通过对从次级线圈提供的第二电压进行整流来输出输出电压。 变压器和AC-DC整流器之间并联连接主开关和二次开关。
    • 4. 发明授权
    • Backlight driver, display apparatus having the same and method of driving backlight
    • 背光驱动器,具有相同的显示装置和驱动背光的方法
    • US07903081B2
    • 2011-03-08
    • US11846655
    • 2007-08-29
    • Hyeon-Yong JangSeong-Sik Choi
    • Hyeon-Yong JangSeong-Sik Choi
    • G09G3/36
    • G09G3/3406G09G3/2011G09G3/2014G09G3/2081G09G2320/0252
    • A backlight driver includes an inverter controller, a dimming signal compensator and an inverter. The inverter controller generates a pulse width modulation signal in response to a control signal and outputs a first dimming signal that represents a duty ratio of the pulse width modulation signal and a second dimming signal that represents an amplitude of the pulse width modulation signal. The dimming signal compensator receives the first and second dimming signals, compares the first dimming signal with a predetermined reference duty ratio and compensates the second dimming signal in accordance with the compared result to generate a third dimming signal. The inverter outputs a driving voltage to drive the backlight and varies a voltage level of the driving voltage in response to the first and third dimming signals to control a brightness of the backlight.
    • 背光驱动器包括逆变器控制器,调光信号补偿器和逆变器。 逆变器控制器响应于控制信号产生脉宽调制信号,并输出表示脉宽调制信号的占空比的第一调光信号和表示脉宽调制信号的幅度的第二调光信号。 调光信号补偿器接收第一和第二调光信号,将第一调光信号与预定的参考占空比进行比较,并根据比较结果补偿第二调光信号,以产生第三调光信号。 逆变器输出驱动电压以驱动背光,并且响应于第一和第三调光信号改变驱动电压的电压电平以控制背光的亮度。
    • 6. 发明授权
    • Display device and driving device for a light source
    • 用于光源的显示装置和驱动装置
    • US07595785B2
    • 2009-09-29
    • US11187480
    • 2005-07-22
    • Hyeon-Yong Jang
    • Hyeon-Yong Jang
    • G09G3/36
    • H05B41/2858G09G3/3406G09G3/3648G09G2320/041G09G2330/04Y02B20/186
    • A light source portion for a liquid crystal display (LCD) device may prevent reduction of the life span of the multiple lamps (LPs) when a surrounding temperature of the multiple LPs is less than a predetermined temperature of the LCD device. The LCD device comprises first and second brightness control portions receiving a brightness control signal, a temperature sensor, a signal output portion connected to the first and second brightness control portions and the temperature sensor, and an inverter portion turning on or turning off the multiple LPs based on the control signal from the signal output portion. When the temperature sensed by the temperature sensor is less than the predetermined temperature of the LCD device, the signal output portion switches the brightness control signal from a high level to a low level, and makes the multiple LPs maintain the high level until the surrounding temperature becomes more than the predetermined temperature.
    • 当多个LP的周围温度小于LCD装置的预定温度时,用于液晶显示器(LCD)装置的光源部分可以防止多个灯(LP)的使用寿命的减少。 LCD装置包括接收亮度控制信号的第一和第二亮度控制部分,温度传感器,连接到第一和第二亮度控制部分的信号输出部分和温度传感器,以及反转器部分打开或关闭多个LP 基于来自信号输出部分的控制信号。 当温度传感器感测到的温度低于LCD装置的预定温度时,信号输出部分将亮度控制信号从高电平切换到低电平,并使多个LP保持高电平,直到周围温度 变得超过预定温度。
    • 10. 发明申请
    • DEVICE FOR DRIVING A BACKLIGHT, BACKLIGHT ASSEMBLY, LCD APPARATUS HAVING THE SAME AND METHOD FOR DRIVING A BACKLIGHT
    • 用于驱动背光的装置,背光组件,具有其的LCD装置和用于驱动背光的方法
    • US20070091057A1
    • 2007-04-26
    • US11552544
    • 2006-10-25
    • Sang-Gil LEEHyeon-Yong JANGMun-Soo PARK
    • Sang-Gil LEEHyeon-Yong JANGMun-Soo PARK
    • G09G3/36
    • G09G3/3413G09G2320/0633G09G2320/064G09G2320/0666G09G2360/145
    • A liquid crystal display apparatus includes a backlight assembly which includes a device for driving the backlight including a light emitting diode (“LED”) used as a light source, which has a high efficiency and a high reliability for controlling brightness of each color light. The driving device drives a first, second and third LED unit emitting a first, second and third light, respectively. The driving device includes a first driving part emitting the first light in response to a brightness control signal and outputting a reference control signal in response to a first brightness of the first light, a second driving part driving the second LED units generating the second light of which second brightness is controlled in response to the reference control signal, and a third driving part driving the third LED units generating the third light of which third brightness is controlled in response to the reference control signal.
    • 液晶显示装置包括背光组件,其包括用于驱动背光的装置,其包括用作光源的发光二极管(“LED”),其具有用于控制每种颜色光的亮度的高效率和高可靠性。 驱动装置驱动分别发射第一,第二和第三光的第一,第二和第三LED单元。 驱动装置包括响应于亮度控制信号发射第一光并响应于第一光的第一亮度而输出参考控制信号的第一驱动部分,驱动产生第二光的第二光的第二驱动部 所述第二亮度响应于所述参考控制信号而被控制;以及第三驱动部分,驱动所述第三LED单元,其响应于所述参考控制信号而产生其第三亮度被控制的第三光。