公开(公告)号：US08847933B2

公开(公告)日：2014-09-30

申请号：US13687744

申请日：2012-11-28

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Kouhei Toyotaka

IPC分类号： G09G5/00 ,  G09G3/30

CPC分类号： G09G3/30 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2320/043 ,  G09G2330/021 ,  G11C19/28 ,  Y02B20/343 ,  Y02B20/346

摘要： To reduce power consumption of a display device including a scan line driver circuit formed using either n-channel transistors or p-channel transistors when the scan line driver circuit outputs, to one of two kinds of scan lines, inverted or substantially inverted signals of signals output to the other of the two kinds of scan lines. The display device includes a plurality of pulse output circuits each of which outputs a signal to one of two kinds of scan lines and a plurality of inverted pulse output circuits each of which outputs, to the other of the two kinds of scan lines, an inverted or substantially inverted signal output from the each of the pulse output circuits. The plurality of inverted pulse output circuits operate with signals used for the operation of the plurality of pulse output circuits. Thus, through current generated in the inverted pulse output circuits can be reduced.

摘要翻译： 为了降低显示装置的功耗，包括当扫描线驱动电路输出时，使用n沟道晶体管或p沟道晶体管形成的扫描线驱动电路，将两个扫描线中的一个扫描线反转或基本上反相的信号信号 输出到两种扫描线中的另一条。 显示装置包括多个脉冲输出电路，每个脉冲输出电路向两种扫描线之一输出信号，多个反相脉冲输出电路分别向两条扫描线中的另一条输出反相 或基本上反相的信号从每个脉冲输出电路输出。 多个反相脉冲输出电路与用于多个脉冲输出电路的操作的信号一起工作。 因此，可以减少在反相脉冲输出电路中产生的电流。

公开(公告)号：US20140285103A1

公开(公告)日：2014-09-25

申请号：US14357626

申请日：2012-08-30

申请人： Kaustuva Acharya ,  Raman Nair Harish Gopala Pillai ,  Yimin Chen ,  Ajay Tripathi

发明人： Kaustuva Acharya ,  Raman Nair Harish Gopala Pillai ,  Yimin Chen ,  Ajay Tripathi

IPC分类号： H05B33/08

CPC分类号： H05B33/08 ,  H05B33/0812 ,  Y02B20/343

摘要： A programmable driver for driving a solid state lighting device includes a processing circuit, a voltage feedback loop and a power stage. The processing circuit is configured to determine a voltage reference signal based on a nominal current setting and a predetermined power limit. The voltage feedback loop is configured to receive the voltage reference signal and to determine a difference between a reference voltage indicated by the voltage reference signal and a drive voltage of the solid state lighting device. The power stage is configured to limit maximum output voltage for driving the solid state lighting device based at least in part on the determined difference between the reference voltage and the drive voltage of the solid state lighting device provided by the voltage feedback loop.

摘要翻译： 用于驱动固态照明装置的可编程驱动器包括处理电路，电压反馈回路和功率级。 处理电路被配置为基于标称电流设置和预定功率限制来确定电压参考信号。 电压反馈回路被配置为接收电压参考信号并且确定由电压参考信号指示的参考电压与固态照明装置的驱动电压之间的差。 功率级被配置为至少部分地基于由电压反馈回路提供的固态照明装置的参考电压和驱动电压之间的确定的差异来限制用于驱动固态照明装置的最大输出电压。

公开(公告)号：US20140197747A1

公开(公告)日：2014-07-17

申请号：US14154367

申请日：2014-01-14

申请人： STMicroelectronics S.r.l.

发明人： Marco Martini ,  Salvatore Pantano

IPC分类号： H05B33/08 ,  H02M1/36

CPC分类号： H05B33/0815 ,  H02M1/36 ,  H05B33/0812 ,  H05B33/0848 ,  Y02B20/343

摘要： A current driver for a string of LEDs includes a first series connection of a first transistor and a first resistance and a second series connection of a second transistor and a second resistance. The first and second series connections are coupled in parallel between the string of LEDs and a voltage reference. An operational amplifier selectively drives the first and second transistors in response to a clock signal. A switch device driven by the clock signal alternately applies a reference voltage and a respective one of the voltages across the first and second resistances to inverting and non-inverting inputs of the operational amplifier in response to the clock signal. A storage circuit is coupled to the output of the operational amplifier to store the drive signals for the first and second transistors for application to the first and second transistors in the absence of output from the operational amplifier.

摘要翻译： 用于一串LED的电流驱动器包括第一晶体管和第一电阻的第一串联连接以及第二晶体管和第二电阻的第二串联连接。 第一和第二串联连接并联在LED串和电压基准之间。 运算放大器响应于时钟信号选择性地驱动第一和第二晶体管。 由时钟信号驱动的开关装置响应于时钟信号交替地将参考电压和跨第一和第二电阻的电压中的相应电压施加到运算放大器的反相和非反相输入。 在没有来自运算放大器的输出的情况下，存储电路耦合到运算放大器的输出端以存储用于第一和第二晶体管的驱动信号，以用于第一和第二晶体管。

公开(公告)号：US08749140B2

公开(公告)日：2014-06-10

申请号：US13708910

申请日：2012-12-07

申请人： GIO Optoelectronics Corp.

发明人： Wu-Chang Yang

IPC分类号： H01J7/44

CPC分类号： F21V25/00 ,  F21K9/27 ,  F21V25/04 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/0809 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0884 ,  Y02B20/343 ,  Y02B20/346 ,  Y02B20/383

摘要： A light emitting apparatus receives an external power. A switching unit is electrically connected with a light emitting unit to form a serial circuit. A first electrical connection element is electrically connected with the external power and the light emitting unit. A second electrical connection element is electrically connected with the external power and the switching unit. A sensing unit is electrically connected with the first electrical connection element, the second electrical connection element and the switching unit. When filament currents flow between two electrical input terminals of the first electrical connection element and between two electrical input terminals of the second electrical connection element, the sensing unit controls the switching unit to turn on to enable the light emitting unit to receive the external power and start to emit light. Thus, users can avoid the risk of electric shock when installing the light emitting apparatus.

摘要翻译： 发光装置接收外部电力。 开关单元与发光单元电连接以形成串行电路。 第一电连接元件与外部电源和发光单元电连接。 第二电连接元件与外部电源和开关单元电连接。 感测单元与第一电连接元件，第二电连接元件和开关单元电连接。 当灯丝电流在第一电连接元件的两个电输入端之间和第二电连接元件的两个电输入端之间流动时，感测单元控制开关单元导通以使得发光单元能够接收外部电力， 开始发光。 因此，用户在安装发光装置时可以避免触电的风险。

公开(公告)号：US20140139108A1

公开(公告)日：2014-05-22

申请号：US14083334

申请日：2013-11-18

申请人： Permlight Products, Inc.

发明人： Kamran Sarmadi ,  Tom Brooks

IPC分类号： H05B33/08 ,  F21K99/00

CPC分类号： F21V7/00 ,  F21K9/00 ,  F21S8/06 ,  F21V3/049 ,  F21V5/04 ,  F21V7/0016 ,  F21V7/05 ,  F21V7/22 ,  F21V9/30 ,  F21V13/12 ,  F21V17/12 ,  F21V23/008 ,  F21V25/10 ,  F21V29/713 ,  F21V29/87 ,  F21V29/89 ,  F21Y2101/00 ,  F21Y2105/10 ,  F21Y2115/10 ,  H05B33/0803 ,  H05B33/0812 ,  Y02B20/343

摘要： An LED-based luminaire is configured to direct light from an LED source downwardly. However, a portion of the luminaire intentially reflects part of the light upwardly toward a ceiling of a structure. A control circuit of an LED-based luminaire enables the luminaire to be dimmed by an off-the-shelf dimmer. The control circuit also determines when a temperature of the LED-based luminaire exceeds a desired temperature range, and employs a feedback circuit to reduce power delivery to the LEDs until the temperature is again within the desired temperature range.

摘要翻译： 基于LED的照明器被配置为向下引导来自LED源的光。 然而，照明器的一部分将部分光线向上朝向结构的天花板反射。 基于LED的照明器的控制电路使照明器能够通过现成的调光器变暗。 控制电路还确定基于LED的照明器的温度何时超过期望的温度范围，并且采用反馈电路来减少对LED的功率输送，直到温度再次在期望的温度范围内。

公开(公告)号：US20130265017A1

公开(公告)日：2013-10-10

申请号：US13828535

申请日：2013-03-14

申请人： STMICROELECTRONICS S.R.L

发明人： Roberto La Rosa ,  Massimo Michele Antonio Sorbera

IPC分类号： G05F1/46 ,  H05B33/08

CPC分类号： G05F1/46 ,  H05B33/0812 ,  H05B33/0821 ,  Y02B20/343 ,  Y02B20/345

摘要： An embodiment of a driving device is proposed for supplying at least one regulated global output current to a load. The driving device includes programming means for programming a value of the global output current within a global current range. Reference means are provided for supplying a reference voltage, which has a value corresponding to the value of the global output current. Conversion means are then used for converting the reference voltage into the global output current. The conversion means may further include a plurality of conversion units for corresponding partial current ranges, which partition the global current range.

摘要翻译： 提出了一种驱动装置的实施例，用于向负载提供至少一个调节的全局输出电流。 驱动装置包括用于在全局电流范围内编程全局输出电流的值的编程装置。 提供用于提供参考电压的参考装置，其具有对应于全局输出电流的值的值。 然后使用转换装置将参考电压转换成全局输出电流。 转换装置还可以包括用于对应的局部电流范围的多个转换单元，其分割全局电流范围。

公开(公告)号：US20130187470A1

公开(公告)日：2013-07-25

申请号：US13355044

申请日：2012-01-20

申请人： Alex Huang ,  Qiusheng Chen

发明人： Alex Huang ,  Qiusheng Chen

IPC分类号： H02J9/00

CPC分类号： H02J9/065 ,  H05B33/0812 ,  H05B33/0842 ,  Y02B20/343 ,  Y10T307/625

摘要： Emergency lighting with a charging indicator circuitry comprises a power source module, a lighting circuit, a battery circuit, and an emergency switch circuit. The battery circuit includes charging indicator circuitry and a battery module; the power source module is connected with the battery module via the charging indicator circuitry. When the utility power is interrupted or a test switch is pressed, the light of the charging indicator circuitry goes out to indicate that the emergency lighting is in discharging status. When the utility power is supplied normally, if a battery within the battery module is in disconnected state, the light of the indicating circuitry goes out to indicate that the emergency lighting is in disconnected state. The charging indicator circuitry may be a simple light-emitting indicating circuit, has no need for much modification to the original circuit during manufacture and design, and may be simple and quickly-responsive.

摘要翻译： 具有充电指示器电路的紧急照明包括电源模块，照明电路，电池电路和紧急开关电路。 电池电路包括充电指示器电路和电池模块; 电源模块通过充电指示器电路与电池模块连接。 当公用电源中断或按下测试开关时，充电指示灯电路的指示灯熄灭，表示应急照明处于放电状态。 当公用电源正常供电时，如果电池模块内的电池处于断开状态，指示电路的指示灯熄灭，表示应急照明处于断开状态。 充电指示器电路可以是简单的发光指示电路，在制造和设计期间不需要对原始电路进行太多的修改，并且可以是简单和快速响应的。

公开(公告)号：US08487545B2

公开(公告)日：2013-07-16

申请号：US11464166

申请日：2005-02-11

申请人： Peter Bhagat

发明人： Peter Bhagat

IPC分类号： H05B37/02

CPC分类号： H05B33/0812 ,  H05B33/0887 ,  H05B33/0893 ,  Y02B20/343 ,  Y02B20/345

摘要： A lighting controller arranged to drive one or more light emitting semiconductors, the controller comprising a current source and/or a voltage source and a current and/or voltage sensor wherein the controller is arranged to drive the or each light emitting semiconductor using a substantially constant current or voltage and further arranged to either monitor the actual current passing through the light emitting semiconductor and the controller being arranged to monitor the voltage such that the disconnection or occurrence of faults within the or each light emitting semiconductor can be detected; or monitor the actual voltage across the light emitting semiconductor and the controller being arranged to monitor the current such that the disconnection or occurrence of faults within the or each light emitting semiconductor can be detected.

摘要翻译： 布置成驱动一个或多个发光半导体的照明控制器，所述控制器包括电流源和/或电压源以及电流和/或电压传感器，其中所述控制器布置成使用基本恒定的驱动所述或每个发光半导体 电流或电压，并且进一步布置成监视通过发光半导体的实际电流，并且控制器被布置成监视电压，使得可以检测在该或每个发光半导体内的故障的断开或发生; 或者监视发光半导体两端的实际电压，并且控制器被布置成监测电流，使得可以检测到在该或每个发光半导体内的故障的断开或发生。

公开(公告)号：US20130169160A1

公开(公告)日：2013-07-04

申请号：US13693620

申请日：2012-12-04

申请人： Hyun-jung KIM ,  Young-gi RYU

发明人： Hyun-jung KIM ,  Young-gi RYU

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0812 ,  H05B33/083 ,  Y02B20/343 ,  Y02B20/345

摘要： A light-emitting diode (LED) driver circuit and a light apparatus including the LED driver circuit are provided. The light apparatus includes an LED array, an input unit, a rectifier, and a control circuit. The LED array includes LED devices connected to one another in series. The input unit receives an alternating current (AC) power source. The rectifier circuit full-wave rectifies the received AC power source signal and supplies the full-wave rectified AC power source signal to the LED array. The control circuit selectively lights the LED devices according to a voltage level of the full-wave rectified AC power source signal. The control circuit includes switching elements and comparators. The switching elements selectively force nodes between the LED devices to be grounded. The comparators turn-on one of the switching elements according to the voltage level of the full-wave rectified AC power source signal.

摘要翻译： 提供了一种发光二极管（LED）驱动电路和包括该LED驱动电路的光装置。 光装置包括LED阵列，输入单元，整流器和控制电路。 LED阵列包括串联连接的LED装置。 输入单元接收交流（AC）电源。 整流电路全波整流接收到的交流电源信号，并将全波整流交流电源信号提供给LED阵列。 控制电路根据全波整流的AC电源信号的电压电平有选择地点亮LED器件。 控制电路包括开关元件和比较器。 开关元件选择性地迫使LED器件之间的节点接地。 比较器根据全波整流交流电源信号的电压电平接通开关元件之一。

公开(公告)号：US20130147350A1

公开(公告)日：2013-06-13

申请号：US13708910

申请日：2012-12-07

申请人： GIO OPTOELECTRONICS CORP.

发明人： WU-CHANG YANG

IPC分类号： F21V25/00

CPC分类号： F21V25/00 ,  F21K9/27 ,  F21V25/04 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/0809 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0884 ,  Y02B20/343 ,  Y02B20/346 ,  Y02B20/383

摘要： A light emitting apparatus receives an external power. A switching unit is electrically connected with a light emitting unit to form a serial circuit. A first electrical connection element is electrically connected with the external power and the light emitting unit. A second electrical connection element is electrically connected with the external power and the switching unit. A sensing unit is electrically connected with the first electrical connection element, the second electrical connection element and the switching unit. When filament currents flow between two electrical input terminals of the first electrical connection element and between two electrical input terminals of the second electrical connection element, the sensing unit controls the switching unit to turn on to enable the light emitting unit to receive the external power and start to emit light. Thus, users can avoid the risk of electric shock when installing the light emitting apparatus.

摘要翻译： 发光装置接收外部电力。 开关单元与发光单元电连接以形成串行电路。 第一电连接元件与外部电源和发光单元电连接。 第二电连接元件与外部电源和开关单元电连接。 感测单元与第一电连接元件，第二电连接元件和开关单元电连接。 当灯丝电流在第一电连接元件的两个电输入端之间和第二电连接元件的两个电输入端之间流动时，感测单元控制开关单元导通以使发光单元能够接收外部电力， 开始发光。 因此，用户在安装发光装置时可以避免触电的风险。