公开(公告)号：US08247993B2

公开(公告)日：2012-08-21

申请号：US12560915

申请日：2009-09-16

申请人： Jung Chul Gong ,  Byoung Own Min ,  Bon Ahm Goo ,  Sang Cheol Shin

发明人： Jung Chul Gong ,  Byoung Own Min ,  Bon Ahm Goo ,  Sang Cheol Shin

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  G09G3/342 ,  G09G2330/12

摘要： An apparatus for driving multi-light emitting devices that drives a multi-channel light emitting unit having a plurality of light emitting channels connected in parallel with each other, each of which has a plurality of light emitting devices connected in series with each other according to an aspect of the invention may include: a DC/DC converter generating a driving voltage; a current control unit having a plurality of current sources connected between cathodes of the plurality of light emitting channels and a ground; a minimum voltage selection unit detecting a minimum detection voltage among the plurality of detected voltages at the cathodes of the plurality of light emitting channels; a first error detection unit detecting an error voltage determined by the difference between the minimum detection voltage and a predetermined first reference voltage; and a feedback coupling unit supplying the input voltage according to the error voltage and the driving voltage.

摘要翻译： 一种用于驱动多发光器件的装置，其驱动具有彼此并联连接的多个发光通道的多通道发光单元，每个发光单元具有多个根据 本发明的一个方面可以包括：产生驱动电压的DC / DC转换器; 电流控制单元，其具有连接在所述多个发光通道的阴极和地之间的多个电流源; 最小电压选择单元，检测多个发光通道的阴极处的多个检测电压中的最小检测电压; 第一误差检测单元，检测由所述最小检测电压和预定的第一参考电压之间的差确定的误差电压; 以及反馈耦合单元，根据误差电压和驱动电压提供输入电压。

公开(公告)号：US20100102756A1

公开(公告)日：2010-04-29

申请号：US12578823

申请日：2009-10-14

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

IPC分类号： H05B41/36

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/341 ,  Y02B20/347

摘要： An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit.

摘要翻译： 根据本发明的一个方面的用于驱动发光器件的装置可以包括：DC / DC转换器单元，其基于输入电压产生驱动电力并将所产生的驱动功率提供给包括发光单元的发光单元的阳极 多个发光装置; 电流源，用于保持电流流过所述发光单元恒定; 检测所述发光单元的阴极处的电压的反馈电路单元; 以及反馈耦合电路单元，其将反馈电路单元的输出和DC / DC转换器单元的输入耦合，以根据由反馈电路单元检测到的电压和DC / DC转换器单元的输出电压来提供DC / DC转换器单元的输入电压 的DC / DC转换器单元。

公开(公告)号：US08269429B2

公开(公告)日：2012-09-18

申请号：US12578823

申请日：2009-10-14

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

IPC分类号： H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B37/00 ,  H05B39/00 ,  H05B41/00

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/341 ,  Y02B20/347

摘要： An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit.

摘要翻译： 根据本发明的一个方面的用于驱动发光器件的装置可以包括：DC / DC转换器单元，其基于输入电压产生驱动电力并将所产生的驱动功率提供给包括发光单元的发光单元的阳极 多个发光装置; 电流源，用于保持电流流过所述发光单元恒定; 检测所述发光单元的阴极处的电压的反馈电路单元; 以及反馈耦合电路单元，其将反馈电路单元的输出和DC / DC转换器单元的输入耦合，以根据由反馈电路单元检测到的电压和DC / DC转换器单元的输出电压来提供DC / DC转换器单元的输入电压 的DC / DC转换器单元。

公开(公告)号：US07746318B2

公开(公告)日：2010-06-29

申请号：US11695222

申请日：2007-04-02

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Chang Woo Ha ,  Jung Chul Gong

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Chang Woo Ha ,  Jung Chul Gong

IPC分类号： G09G3/36

CPC分类号： H05B41/386

摘要： An LCD backlight inverter includes a soft starter for generating a soft-start reference voltage gradually increasing as the driving power begins to be supplied. The LCD backlight inverter also includes a first error detector for receiving a first feedback voltage indicating the magnitude of driving current of the lamp and for comparing a smaller value out of a predetermined first reference voltage and the soft-start reference voltage with the first feedback voltage to generate a first error signal corresponding to the difference between the smaller value and the soft-start reference voltage. The LCD backlight inverter further includes a pulse width modulation comparator for comparing the first error signal and a triangle wave oscillation signal to output the pulse width modulation control signal with a predetermined duty ratio. The LCD backlight inverter prevents application of over-current and over-voltage to the LCD backlight to prolong the lifetime of the backlight.

摘要翻译： LCD背光逆变器包括软起动器，用于随着驱动电力开始供给而产生逐渐增加的软启动基准电压。 LCD背光逆变器还包括第一误差检测器，用于接收指示灯的驱动电流的大小的第一反馈电压，并且用于将预定的第一参考电压和软启动参考电压之间的较小值与第一反馈电压进行比较 以产生对应于较小值和软启动参考电压之间的差的第一误差信号。 LCD背光反相器还包括脉冲宽度调制比较器，用于比较第一误差信号和三角波振荡信号，以预定占空比输出脉宽调制控制信号。 LCD背光逆变器可防止对LCD背光产生过电流和过电压，延长背光源的使用寿命。

公开(公告)号：US07515004B2

公开(公告)日：2009-04-07

申请号：US11458577

申请日：2006-07-19

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Chang Woo Ha ,  Jung Chul Gong

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Chang Woo Ha ,  Jung Chul Gong

IPC分类号： H03B27/00

CPC分类号： H03K5/1565 ,  H03K3/0322 ,  H03K5/133 ,  H03K2005/00208 ,  H03L7/0995

摘要： A voltage controlled oscillator (VCO) for generating a clock of a 50% duty includes a VCO unit and a duty correction unit. The VCO unit generates first and second signals having a 180° phase difference to each other with an oscillation frequency according to a control voltage to output the first and second signals through first and second oscillation output terminals. The duty correction unit generates a clock signal of a 50% duty according to the first and second signals through the first and second oscillation terminals.

摘要翻译： 用于产生50％占空比的时钟的压控振荡器（VCO）包括VCO单元和占空比校正单元。 VCO单元根据控制电压产生具有振荡频率的180°相位差的第一和第二信号，以通过第一和第二振荡输出端输出第一和第二信号。 占空比校正单元通过第一和第二振荡端子根据第一和第二信号产生50％占空比的时钟信号。

公开(公告)号：US20080042627A1

公开(公告)日：2008-02-21

申请号：US11819571

申请日：2007-06-28

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

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

IPC分类号： G05F1/10

CPC分类号： H05B41/282 ,  G09G3/3406 ,  H05B41/2822 ,  H05B41/2855 ,  Y02B20/183

摘要： A voltage feedback circuit for a liquid crystal display backlight inverter including a plurality of first and second transformers driven oppositely to each other, the voltage feedback circuit including: a first voltage detector detecting a first drive voltage from a first transformer; a second voltage detector detecting a second drive voltage from a second transformer; a peak detector detecting a peak of a voltage detected at a detection connection node at which an output end of the first voltage detector and an output end of the second voltage detector are connected; a voltage adjustor adjusting a peak voltage from the peak detector according to a predetermined voltage ratio; and anerror detector detecting a difference voltage between the detected voltage from the voltage adjustor and a predetermined reference voltage.

摘要翻译： 一种用于液晶显示器背光源逆变器的电压反馈电路，包括彼此相对驱动的多个第一和第二变压器，所述电压反馈电路包括：第一电压检测器，检测来自第一变压器的第一驱动电压; 第二电压检测器，检测来自第二变压器的第二驱动电压; 检测在第一电压检测器的输出端和第二电压检测器的输出端连接的检测连接节点处检测到的电压的峰值的峰值检测器; 电压调节器，根据预定电压比调整来自峰值检测器的峰值电压; 和检测来自电压调节器的检测电压与预定参考电压之间的差分电压的异常检测器。

公开(公告)号：US20070285381A1

公开(公告)日：2007-12-13

申请号：US11808161

申请日：2007-06-07

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

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

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： H05B41/2828 ,  G09G3/3406 ,  Y02B20/186

摘要： An inverter driving circuit for an LCD is switched on/off more stably to improve heating radiation characteristics and drive efficiency. In the driving circuit, a controller supplies a first driving signal. A level shifter provides a second driving signal. A first delay circuit delays a rising section of the first driving signal to provide the first driving signal. A second delay circuit delays a falling section of the second driving signal to provide the second driving signal. Also, a power switching circuit is provided. The inverter driving circuit for the LCD, when a switching device thereof is turned off, has less current flowing in the switching device, thereby generating less heat. In addition, the inverter driving circuit prevents heat generation caused by current flowing reversely in the switching device, thereby enhancing drive efficiency.

摘要翻译： 用于LCD的逆变器驱动电路更稳定地接通/断开以提高加热辐射特性和驱动效率。 在驱动电路中，控制器提供第一驱动信号。 电平移位器提供第二驱动信号。 第一延迟电路延迟第一驱动信号的上升部分以提供第一驱动信号。 第二延迟电路延迟第二驱动信号的下降部分以提供第二驱动信号。 另外，还提供了电源开关电路。 用于LCD的逆变器驱动电路当其开关装置关闭时，在开关装置中流动的电流较少，从而产生较少的热量。 此外，逆变器驱动电路防止在开关装置中逆流流动的热量产生，从而提高驱动效率。

公开(公告)号：US07834711B2

公开(公告)日：2010-11-16

申请号：US12166885

申请日：2008-07-02

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

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

IPC分类号： H03K3/233 ,  H03K3/37

摘要： 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.

公开(公告)号：US07777527B2

公开(公告)日：2010-08-17

申请号：US12200031

申请日：2008-08-28

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

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

IPC分类号： G01R29/00 ,  H03D3/00 ,  H03D9/00

CPC分类号： H03D13/003

摘要： There is provided a phase detection apparatus that can accurately detect a phase difference between an input signal and a reference signal even when the input signal and the reference signal have different duty cycles. A phase detection apparatus according to an aspect of the invention may include: a pulse generation unit generating a first pulse signal on an edge of an input pulse signal, and a second pulse signal based on an edge of a reference pulse signal having a predetermined phase; and a detection unit detecting a phase difference between the first pulse signal and the second pulse signal from the pulse generation unit.

摘要翻译： 提供了即使在输入信号和参考信号具有不同的占空比的情况下，也可以精确地检测输入信号和参考信号之间的相位差的相位检测装置。 根据本发明的一个方面的相位检测装置可以包括：脉冲产生单元，其在输入脉冲信号的边缘上产生第一脉冲信号，以及基于具有预定相位的参考脉冲信号的边沿的第二脉冲信号 ; 以及检测单元，其从所述脉冲发生单元检测所述第一脉冲信号和所述第二脉冲信号之间的相位差。

公开(公告)号：US08022638B2

公开(公告)日：2011-09-20

申请号：US12437692

申请日：2009-05-08

申请人： Yu Jin Jang ,  Byoung Own Min ,  Jung Chul Gong ,  Sang Cheol Shin ,  Jeong In Cheon

发明人： Yu Jin Jang ,  Byoung Own Min ,  Jung Chul Gong ,  Sang Cheol Shin ,  Jeong In Cheon

IPC分类号： H05B41/292

CPC分类号： H05B41/2855

摘要： Disclosed is a liquid crystal display (LCD) backlight inverter. The LCD backlight inverter includes a lamp open detection unit outputting a first open detection voltage for a preset time period when it is determined that a predetermined lamp is open, based on a current voltage corresponding to the current of the predetermined lamp of a plurality of lamps, a first open determination unit outputting an open detection signal when the first open detection voltage is input, a second open determination unit outputting a protection signal when it is determined that all of the plurality of lamps are open based on detection voltages of the plurality of lamps, a temporary protection determination unit outputting a frequency change signal when both the open detection signal and the protection signal are input, and an operating frequency control unit changing an operating frequency to a preset protective frequency according to the frequency change.

摘要翻译： 公开了一种液晶显示（LCD）背光逆变器。 LCD背光逆变器包括：灯开路检测单元，基于与多个灯的预定灯的电流相对应的电流电压，当确定预定灯打开时，将预定时间段的第一开路检测电压输出 第一开路判定单元，当输入第一开路检测电压时，输出开路检测信号;第二开路判定单元，基于多个灯的检测电压确定多个灯全部断开时，输出保护信号 灯，当输入开放检测信号和保护信号时输出频率变化信号的临时保护判定单元，以及根据频率变化将工作频率改变为预设保护频率的工作频率控制单元。