公开(公告)号：US08421369B2

公开(公告)日：2013-04-16

申请号：US12606800

申请日：2009-10-27

Applicant: Jeong In Cheon ,  Byoung Own Min ,  Yu Jin Jang ,  Seung Kon Kong

Inventor： Jeong In Cheon ,  Byoung Own Min ,  Yu Jin Jang ,  Seung Kon Kong

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  Y02B20/341 ,  Y02B20/346

Abstract: The present invention relates to a light emitting diode driver having a protection function that activates hiccup mode for a predetermined period of time when a light emitting diode performs an abnormal operation to thereby protect the light emitting diode. A light emitting diode driver having a protection function according to an aspect of the invention may include: a light emitting unit emitting light; a reference signal generating unit generating a reference signal having pulses with a predetermined period when the light emitting unit performs an abnormal operation; a control unit controlling operating time in hiccup mode according to the reference signal from the reference signal generating unit, the hiccup mode where output is switched on and off at a predetermined period; and a driving unit driving the light emitting unit in the hiccup mode for the operating time determined by the control unit.

Abstract translation: 本发明涉及具有保护功能的发光二极管驱动器，该保护功能在发光二极管执行异常操作从而保护发光二极管时，在预定时间段内激活打嗝模式。 根据本发明的一个方面的具有保护功能的发光二极管驱动器可以包括：发光单元; 参考信号产生单元，当所述发光单元执行异常操作时，产生具有预定周期的脉冲的参考信号; 控制单元，根据来自基准信号生成单元的基准信号控制打嗝模式的动作时间，以预定时间段接通和断开输出的打嗝模式; 以及驱动单元，在由所述控制单元确定的所述操作时间的情况下，以所述打嗝模式驱动所述发光单元。

公开(公告)号：US20120229042A1

公开(公告)日：2012-09-13

申请号：US13212836

申请日：2011-08-18

Applicant: Yu Jin JANG

Inventor： Yu Jin JANG

IPC: H05B37/02

CPC classification number: H05B41/2828

Abstract: There is provided an inverter for controlling a backlight using a variable frequency oscillator, the inverter including: a variable frequency oscillator generating a reference waveform having a variable frequency through voltage charged in a first capacitor and voltage discharged therefrom by a current; and a main switching signal generator generating a switching signal for driving a plurality of lamps based on a first error voltage between output voltages corresponding to currents flowing in the lamps and a first reference voltage and the reference waveform, whereby damage of circuit elements such as the lamps, or the like, may be prevented and the brightness of the lamps may be constantly maintained.

Abstract translation: 提供了一种用于使用可变频率振荡器控制背光的逆变器，所述逆变器包括：产生具有在第一电容器中充电的可变频率通过电压的参考波形的可变频率振荡器和通过电流从其放电的电压; 以及主开关信号发生器，其基于在对应于在灯中流动的电流的输出电压和第一参考电压和参考波形之间的第一误差电压产生用于驱动多个灯的开关信号，由此损坏电路元件，例如 灯等，可以防止灯的亮度持续保持。

公开(公告)号：US07902932B2

公开(公告)日：2011-03-08

申请号：US12166885

申请日：2008-07-02

Applicant: Yu Jin Jang ,  Byoung Own Min ,  Seung Kon Kong ,  Sang Cheol Shin ,  Jung Chul Gong

Inventor： Yu Jin Jang ,  Byoung Own Min ,  Seung Kon Kong ,  Sang Cheol Shin ,  Jung Chul Gong

IPC: H03K3/233 ,  H03K3/37

CPC classification number: H03K4/502

Abstract: There is provided a frequency-variable oscillator that varies, even when a frequency of an input signal is varied, a frequency of an oscillation signal according to the varied frequency of the input signal. The frequency-variable oscillator includes: a voltage-to-current converter circuit for converting a voltage level of an input signal into a current level within a predetermined range; and an oscillator circuit for varying a frequency according to the current level from the voltage-to-current converter circuit and oscillating the varied frequency.

Abstract translation: 提供了一种变频振荡器，即使输入信号的频率发生变化，也可根据输入信号的频率变化振荡信号的频率。 变频振荡器包括：电压 - 电流转换器电路，用于将输入信号的电压电平转换成预定范围内的电流电平; 以及用于根据来自电压 - 电流转换器电路的电流电平改变频率并振荡变化的频率的振荡器电路。

公开(公告)号：US20100141300A1

公开(公告)日：2010-06-10

申请号：US12437713

申请日：2009-05-08

Applicant: Bo Hyun Hwang ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang ,  Seung Kon Kong ,  Sang Cheol Shin

Inventor： Bo Hyun Hwang ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang ,  Seung Kon Kong ,  Sang Cheol Shin

IPC: H03K19/0175

CPC classification number: H05B33/0818 ,  G09G3/3406 ,  G09G2330/04 ,  H05B33/0848 ,  H05B33/0887 ,  H05B41/2828 ,  H05B41/2855 ,  Y02B20/346

Abstract: An inverter driver integrated circuit (IC) includes a control signal generator generating a first control signal and a second control signal by use of a pulse width modulation oscillator signal, a comparator comparing a half-wave rectified signal of a lamp feedback signal fed back from a lamp with a preset reference signal to output a lamp state signal, a first sensor receiving the lamp state signal and the second control signal to output a first sensing signal, and a second sensor receiving the first sensing signal and the first control signal to output a second sensing signal.

Abstract translation: 逆变器驱动器集成电路（IC）包括通过使用脉冲宽度调制振荡器信号产生第一控制信号和第二控制信号的控制信号发生器，比较将反馈信号反馈的灯反馈信号的半波整流信号 具有预置参考信号以输出灯状态信号的灯，接收灯状态信号的第一传感器和第二控制信号以输出第一感测信号，以及接收第一感测信号和第一控制信号的第二传感器，以输出 第二感测信号。

公开(公告)号：US20090128055A1

公开(公告)日：2009-05-21

申请号：US12254520

申请日：2008-10-20

Applicant: Sang Cheol SHIN ,  Byoung Own MIN ,  Jung Chul GONG ,  Yu Jin JANG ,  Seung Kon KONG

Inventor： Sang Cheol SHIN ,  Byoung Own MIN ,  Jung Chul GONG ,  Yu Jin JANG ,  Seung Kon KONG

IPC: H05B37/02

CPC classification number: H05B33/0818

Abstract: Provided is an apparatus for driving a light emitting element. The apparatus includes a power unit, a light emitting element array, a constant-current circuit unit, and a voltage limiting circuit unit. The power unit supplies driving power. The light emitting element array includes a plurality of light emitting elements connected in series between an anode terminal connected to the power unit and a cathode terminal. The constant-current circuit unit maintains a constant current flowing through the light emitting element array according to a first tuning voltage. The voltage limiting circuit unit is connected between the cathode terminal of the light emitting element array and the constant-current circuit unit, and divides a total voltage applied between the cathode terminal of the light emitting element array and a ground according to a second tuning voltage to limit a voltage applied to the constant-current circuit unit below a predetermined voltage.

Abstract translation: 提供一种驱动发光元件的装置。 该装置包括功率单元，发光元件阵列，恒流电路单元和电压限制电路单元。 电源单元提供驱动电源。 发光元件阵列包括串联连接到电源单元的阳极端子和阴极端子之间的多个发光元件。 恒流电路单元根据第一调谐电压维持流过发光元件阵列的恒定电流。 电压限制电路单元连接在发光元件阵列的阴极端子和恒流电路单元之间，并且根据第二调谐电压将施加在发光元件阵列的阴极端子与地之间的总电压分压 以将施加到恒流电路单元的电压限制在预定电压以下。

公开(公告)号：US07443111B2

公开(公告)日：2008-10-28

申请号：US11812554

申请日：2007-06-20

Applicant: Yu Jin Jang ,  Byoung Own Min ,  Sang Cheol Shin ,  Jung Chul Gong

Inventor： Yu Jin Jang ,  Byoung Own Min ,  Sang Cheol Shin ,  Jung Chul Gong

IPC: H05B37/02 ,  G09G3/38

CPC classification number: H05B41/2855

Abstract: A liquid crystal display backlight inverter including a first error amplifying unit receiving and comparing a first detection voltage corresponding to a current flowing through a lamp with a first preset reference voltage and outputting a first error voltage corresponding to an error therebetween; a second error amplifying unit receiving and comparing a second detection voltage corresponding to a voltage applied to the lamp with a second preset reference voltage and outputting a second error voltage corresponding to an error therebetween; a feedback selector selecting one of the outputs of the first and second error amplifying unit according to an error between the second detection voltage and a third preset reference voltage; and a lamp control pulse generator generating a pulse signal having a duty controlled according to one of the first error voltage and second error voltage.

Abstract translation: 一种液晶显示器背光逆变器，包括：第一误差放大单元，接收和比较与流过灯的电流相对应的第一检测电压与第一预设参考电压，并输出与其间的误差对应的第一误差电压; 第二误差放大单元，接收和比较与施加到所述灯的电压相对应的第二检测电压与第二预设参考电压，并输出与其之间的误差对应的第二误差电压; 反馈选择器，根据第二检测电压和第三预置参考电压之间的误差来选择第一和第二误差放大单元的输出之一; 以及灯控制脉冲发生器，其产生具有根据第一误差电压和第二误差电压之一控制的占空比的脉冲信号。

公开(公告)号：US20070182699A1

公开(公告)日：2007-08-09

申请号：US11566505

申请日：2006-12-04

Applicant: Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

Inventor： Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC: G09G3/36

CPC classification number: G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

Abstract: In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

Abstract translation: 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US08643587B2

公开(公告)日：2014-02-04

申请号：US11566505

申请日：2006-12-04

Applicant: Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

Inventor： Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC: G09G3/36

CPC classification number: G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

Abstract: In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

Abstract translation: 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US08289091B2

公开(公告)日：2012-10-16

申请号：US13005054

申请日：2011-01-12

Applicant: Jeong Mo Yang ,  Changsik Yoo ,  Young Jin Moon ,  Yong Seong Roh ,  Joong Ho Choi ,  Jae Shin Lee ,  Jung Chul Gong ,  Yu Jin Jang

Inventor： Jeong Mo Yang ,  Changsik Yoo ,  Young Jin Moon ,  Yong Seong Roh ,  Joong Ho Choi ,  Jae Shin Lee ,  Jung Chul Gong ,  Yu Jin Jang

IPC: H03K3/26

CPC classification number: H03K3/354 ,  H03K3/0231 ,  H03K3/03 ,  H03K5/1534

Abstract: A relaxation oscillator includes a ramp wave generator configured to generate a ramp wave by complementary first capacitor module charged and discharged according to a first switching signal and second capacitor module charged and discharged according to a second switching signal, a negative feedback circuit unit configured to generate a compensation voltage for compensating an error between the ramp wave and a reference voltage through a feedback of the ramp wave, and a switching signal generator configured to generate the first switching signal and the second switching signal from the compensation voltage and the ramp wave, including a peak voltage storage unit configured to store a peak voltage of the ramp wave that is controlled to be equal to the reference voltage based on the compensation voltage and a peak voltage transfer unit configured to transfer the peak voltage of the ramp wave to the negative feedback unit.

Abstract translation: 张弛振荡器包括：斜波发生器，被配置为根据第一开关信号进行充放电的互补第一电容器模块和根据第二开关信号充放电的第二电容器模块产生斜波;负反馈电路单元，被配置为产生 补偿电压，用于通过斜坡波的反馈补偿斜坡波与参考电压之间的误差;以及切换信号发生器，被配置为从补偿电压和斜波产生第一切换信号和第二切换信号，包括 峰值电压存储单元，被配置为基于补偿电压来存储被控制为等于参考电压的斜波的峰值电压;以及峰值电压传送单元，其被配置为将斜波的峰值电压传递到负反馈 单元。

公开(公告)号：US20120087160A1

公开(公告)日：2012-04-12

申请号：US13162793

申请日：2011-06-17

Applicant: Jeong Mo YANG ,  Chang Sik YOO ,  Yung Jin MOON ,  Yong Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

Inventor： Jeong Mo YANG ,  Chang Sik YOO ,  Yung Jin MOON ,  Yong Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

IPC: H02M1/12

CPC classification number: H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

Abstract: There is provided a power factor correction circuit capable of correcting a power factor of a power converting module through increasing an input current by switching a main switching element of a power converting module on the basis of a first reference wave having a slope based on a first signal and an error voltage, in particular, by limiting a switching frequency on the basis of a first reference wave having a slope based on a second signal lower than a first signal and an error voltage when the switching frequency of the main switching element increases because an input voltage of the power converting module is low.

Abstract translation: 提供了一种功率因数校正电路，其能够通过增加输入电流来校正功率转换模块的功率因数，所述功率因数校正电路通过基于第一参考波来切换功率转换模块的主开关元件，所述第一基准波具有基于第一 信号和误差电压，特别是通过基于具有基于低于第一信号的第二信号的斜率的第一参考波和当主开关元件的开关频率增加时的误差电压来限制开关频率，因为 电力转换模块的输入电压低。