-
1.发明授权公开(公告)号：US10321529B2
公开(公告)日：2019-06-11
申请号：US15475003
申请日：2017-03-30
发明人： Young Do Jung , Sung Ho Jin , Sang Wook Han , Hye Man Jung
摘要： An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.
-
公开(公告)号：US11109461B2
公开(公告)日：2021-08-31
申请号：US16890271
申请日：2020-06-02
发明人： Keith Hopwood , Sung Ho Jin , Hyung Jin Lee , Sang Wook Han
IPC分类号： H05B45/395 , H05B45/20 , H05B45/44 , F21V23/04
摘要： An LED lighting apparatus capable of color temperature control includes a color temperature controller to receive a color temperature selection signal and output first and second control signals; a LED driver connected a plurality of LED groups; and a LED selection circuit including a first switch connected to a first node to which a rectified voltage is applied and receiving the first control signal, a first LED group selectively connected to the first node by the first switch, a second LED group connected in scales with the first LED group, a third LED group selectively connected to the first node by the first switch, a fourth LED group connected in series with the third LED group, and a second switch for selectively connecting the output terminal of the second LED group or the fourth LED group to the LED driver by receiving the second control signal.
-
公开(公告)号：US20190053346A1
公开(公告)日：2019-02-14
申请号：US16044515
申请日：2018-07-25
发明人： Keith Hopwood , Sung Ho Jin , Hyung Jin Lee , Sang Wook Han
摘要： An LED lighting apparatus capable of color temperature control includes a color temperature controller to receive a color temperature selection signal and output first and second control signals; a LED driver connected a plurality of LED groups; and a LED selection circuit including a first switch connected to a first node to which a rectified voltage is applied and receiving the first control signal, a first LED group selectively connected to the first node by the first switch, a second LED group connected in series with the first LED group, a third LED group selectively connected to the first node by the first switch, a fourth LED group connected in series with the third LED group, and a second switch for selectively connecting the output terminal of the second LED group or the fourth LED group to the LED driver by receiving the second control signal.
-
4.发明授权LED driving circuit for continuously driving LED, LED lighting device comprising same and driving method 有权LED驱动电路，用于连续驱动LED，LED照明装置及其驱动方法公开(公告)号：US09585214B2
公开(公告)日：2017-02-28
申请号：US14753612
申请日：2015-06-29
发明人： Hye Man Jung , Hyun Gu Kang , Sang Wook Han
IPC分类号： H05B33/08
CPC分类号： H05B33/083 , H05B33/0824 , H05B33/0842 , H05B33/089
摘要： An exemplary embodiment discloses a light-emitting diode (LED) driving circuit including an LED driving module configured to provide a first driving voltage to an LED light emitting module including a first LED group to an n-th LED group, n is an integer which is equal to or larger than 2, and sequentially drive the first LED group to the n-th LED group depending on a voltage level of the first driving voltage and a second driving voltage providing module configured to store some of the first driving voltage and selectively provide a second driving voltage to some of the LED groups other than at least the first LED group to an m-th LED group among the LED groups in a Vfm compensation section, 1≦m≦n−1, according to a control of the LED driving module.
摘要翻译： 示例性实施例公开了一种发光二极管（LED）驱动电路，其包括LED驱动模块，其被配置为向包括第一LED组的LED发光模块提供第一驱动电压至第n个LED组，n为整数， 等于或大于2，并且根据第一驱动电压的电压电平依次驱动第一LED组到第n LED组，以及第二驱动电压提供模块，其被配置为存储第一驱动电压中的一些，并且选择性地 在Vfm补偿部分中的LED组中的至少第一LED组至第一LED组之间的一些LED组提供第二驱动电压，即1≤m≤n-1，根据 LED驱动模块
-
5.发明授权公开(公告)号：US09357605B2
公开(公告)日：2016-05-31
申请号：US14434031
申请日：2013-10-07
发明人： Hye Man Jung , Hyun Gu Kang , Sang Wook Han
CPC分类号： H05B33/083 , H05B33/0812 , H05B33/0824
摘要： Disclosed herein are a light emitting diode (LED) driving apparatus and driving method for continuously driving an LED. According to the present invention, an LED driving apparatus and driving method for continuously driving an LED capable of compensating for a light output of an LED lighting using an energy chargeable and dischargeable element and/or circuit are proposed.
摘要翻译： 这里公开了一种用于连续驱动LED的发光二极管（LED）驱动装置和驱动方法。 根据本发明，提出了一种LED驱动装置和驱动方法，用于使用能量可充放电元件和/或电路连续驱动能够补偿LED照明的光输出的LED。
-
公开(公告)号：US10757781B2
公开(公告)日：2020-08-25
申请号：US16368875
申请日：2019-03-29
发明人： Keith Hopwood , Hyung Jin Lee , Sung Ho Jin , Sang Wook Han , In Seok Baek
摘要： A lighting apparatus including an LED circuit including a plurality of serially connected stages configured to receive a modulated rectified voltage, each of the stages including a first path including a first resistor and a first LED connected in series, and a second path connected to the first path in parallel and including a second LED configured to emit light having a color temperature different from that emitted from the first LED, and a driving current controller configured to adjust an intensity of light output from the LED circuit by adjusting currents applied to driving nodes connected to the stages, depending on a dimming signal associated with a dimming level of the rectified voltage, in which a threshold voltage of the first LED is lower than that of the second LED.
-
7.发明授权公开(公告)号：US10187945B2
公开(公告)日：2019-01-22
申请号：US15322005
申请日：2015-12-01
发明人： Young Do Jung , Sung Ho Jin , Sang Wook Han , Hye Man Jung
摘要： An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.
-
公开(公告)号：US10080267B2
公开(公告)日：2018-09-18
申请号：US15317737
申请日：2015-06-04
发明人： Hyung Jin Lee , Hyun Gu Kang , Sang Wook Han
IPC分类号： H05B33/08
摘要： An AC-driven LED lighting apparatus includes: a triac dimmer to generate a modulated AC voltage by modulating a phase of AC power according to a selected level of dimming; a rectifying circuit to generate drive voltage by full-wave-rectifying the AC voltage having the phase modulated by the triac dimmer; a dimming level detector to detect a dimming level according to the drive voltage; a phase cut reference setting unit for setting a phase cut reference value; and a LED driving module for constant-current-controlling a plurality of LED groups by comparing the detected dimming level with the phase cut reference value, wherein the light emitting element driving module comprises a LED current blocking unit for blocking a drive current supplied to the plurality of LED groups when the dimming level is lower than the phase cut reference value.
-
公开(公告)号：US10356865B2
公开(公告)日：2019-07-16
申请号：US16039345
申请日：2018-07-19
发明人： Kwang Bea Lim , Sung Ho Jin , Sang Wook Han , Young Do Jong
摘要： A lighting apparatus including a light emitting diode connected to a dimmer configured to modulate an input AC voltage depending on a selected dimming level, a rectifier configured to full-wave rectify the modulated AC voltage output from the dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level, and select one of three driving modes of a stop mode, a resistance driving mode, and a sequential driving mode depending on the detected dimming level, and a plurality of light emitting diode groups configured to emit light depending on a control of the driving module.
-
公开(公告)号：US10342080B2
公开(公告)日：2019-07-02
申请号：US15847821
申请日：2017-12-19
发明人： Sung Ho Jin , Sang Wook Han , Hyung Jin Lee
IPC分类号： H05B33/08 , F21S2/00 , F28F3/02 , F28F3/08 , F21V29/71 , F21V29/80 , H01L23/367 , H01L23/498 , H01L25/065 , B23P15/26 , F21Y115/10
摘要： A light-emitting diode (LED) lighting apparatus including at least one LED group including a plurality of LEDs, a rectifier configured to rectify an alternating current (AC) voltage and generate a driving voltage for the at least one LED group, and a system-in-package (SIP) configured to drive and control the at least one LED group, in which the SIP is connected to the at least one LED group and the rectifier, and includes a driving module, a functional module, and a first resistor disposed on a single substrate.
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.02 秒)
