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1. 发明授权

US09955542B2 Apparatus and method for driving LED display panel 有权
公开(公告)号：US09955542B2
公开(公告)日：2018-04-24
申请号：US15237040
申请日：2016-08-15
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Lei Shen , Yi Zhang , Yutao Chen , Shahnad Nadershahi
IPC分类号： H05B33/00 , H05B33/08 , G09G3/32
CPC分类号： H05B33/0845 , G09G3/32 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , H05B33/0815 , H05B33/086
摘要： The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.

2. 发明授权

US09704430B2 LED display device and method for operating the same 有权
公开(公告)号：US09704430B2
公开(公告)日：2017-07-11
申请号：US15370712
申请日：2016-12-06
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Juinn-Yan Chen , Shean-Yih Chiou , Shang-Kuan Tang
IPC分类号： G09G3/32 , G09G5/00 , G09G3/3208 , G09G5/393 , G09G5/395
CPC分类号： G09G3/32 , G06F3/1446 , G09G3/3208 , G09G5/006 , G09G5/393 , G09G5/395 , G09G2300/026 , G09G2352/00 , G09G2370/02 , G09G2370/04 , G09G2370/042 , G09G2370/10 , G09G2370/14
摘要： This disclosure describes an LED display device. The LED display device includes a transmitter, a plurality of first receivers coupled to the transmitter, a plurality of second receiver modules, wherein each of the second receiver modules is coupled to at least one of the first receivers and comprises a plurality of second receivers, a plurality of LED driver groups, each of the LED driver groups coupled to at least one of the second receivers and having a plurality of LED drivers, and a transformerless wire link connecting the plurality of first receivers to the plurality of second receiver modules, or the transformerless wire link connecting adjacent receivers of the plurality of second receivers therebetween.

3. 发明授权

US09671609B2 Display device and method for reducing moiré effects using the same 有权
公开(公告)号：US09671609B2
公开(公告)日：2017-06-06
申请号：US14490879
申请日：2014-09-19
申请人： SCT TECHNOLOGY, LTD.
发明人： Shahnad Nadershahi , Kjetil Osa Edvardsen
IPC分类号： G09F13/08 , G02B27/00 , G02F1/1335
CPC分类号： G02B27/00 , G02F1/133603 , G02F1/133606 , G02F1/133611
摘要： A display device includes a printed circuit board (PCB) having a plurality of light emitting members, an anti-moiré member spaced away from the plurality of light emitting members at about a first distance (d), and a frame member receiving the PCB such that the PCB is interposed between the anti-moiré and the frame member. The anti-moiré member includes a first layer disposed to face the PCB and having a first foil with a randomized pattern surface. The first distance (d) equals L/(2*tan (α)). The second distance (L) is a shortest distance between two adjacent light emitting members. Each of the array of light emitting members has a radiation angle α.

4. 发明申请

US20170084253A1 LED DISPLAY DEVICE AND METHOD FOR OPERATING THE SAME 有权
公开(公告)号：US20170084253A1
公开(公告)日：2017-03-23
申请号：US15370786
申请日：2016-12-06
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric LI , Juinn-Yan Chen , Shean-Yih CHIOU , Shang-Kuan TANG
IPC分类号： G09G5/395 , G09G5/393
CPC分类号： G09G5/395 , G09G3/32 , G09G3/3208 , G09G5/006 , G09G5/393 , G09G2300/026 , G09G2352/00 , G09G2370/02 , G09G2370/04 , G09G2370/042 , G09G2370/10 , G09G2370/14
摘要： This disclosure describes an LED display device. The LED display device includes a transmitter having a memory and a pixel mapping table, a plurality of first receivers coupled to the transmitter, a plurality of second receiver modules, and a plurality of LED driver groups. A unique address is assigned to a data packet with a use of the pixel mapping table. The data packet has a set of field information and the set of field information includes the unique address. Each of the second receiver modules is coupled to at least one of the first receivers and includes a plurality of second receivers. None of the plurality of second receivers comprises a pixel mapping memory. Each of the LED driver groups is coupled to one of the plurality of second receivers and includes a plurality of LED drivers.

5. 发明授权

US09485827B2 Apparatus and method for driving LED display panel 有权
标题翻译： LED显示面板驱动装置及方法
公开(公告)号：US09485827B2
公开(公告)日：2016-11-01
申请号：US13684197
申请日：2012-11-22
申请人： SCT Technology, Ltd.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Lei Shen , Yi Zhang , Yutao Chen , Shahnad Nadershahi
IPC分类号： H05B37/02 , H05B33/08 , G09G3/32
CPC分类号： H05B33/0845 , G09G3/32 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , H05B33/0815 , H05B33/086
摘要： The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.
摘要翻译：本公开提供用于驱动LED显示面板的装置，电路和方法，以便确保以最小灰度级递送相等的全局电荷。在一个示例中，本公开的电路包括电流源，检测模块和测量模块。电流源被配置为产生LED的电流信号。检测模块被配置为响应于施加到LED的低电流来检测LED的正向电压。检测模块还被配置为保持检测到的正向电压。测量模块被配置成响应于施加到LED的显示电流，测量LED的阳极电压的时间周期上升到检测到的正向电压。

6. 发明授权

US09336704B2 Apparatus and method for powering LED driver 有权
标题翻译：为LED驱动器供电的装置和方法
公开(公告)号：US09336704B2
公开(公告)日：2016-05-10
申请号：US14058210
申请日：2013-10-18
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Yi Zhang
IPC分类号： G09G3/32 , G09G3/34 , H05B33/08
CPC分类号： G09G3/32 , G09G3/3426 , G09G2310/0264 , H05B33/0809
摘要： A driver circuit for an LED display panel has a first constant current driver to drive green LEDs, a second constant current driver to drive blue LEDs, and a third constant current driver to drive red LEDs. The driver circuit also has an analog power module electrically coupled to the first, the second, and the third constant current drivers. The analog power module has two or more power sources. The driver circuit further includes a digital controller for transmitting digital control signals to the analog driver. The digital controller is powered by a digital power module.
摘要翻译：用于LED显示面板的驱动器电路具有用于驱动绿色LED的第一恒定电流驱动器，用于驱动蓝色LED的第二恒定电流驱动器和用于驱动红色LED的第三恒定电流驱动器。驱动器电路还具有电耦合到第一，第二和第三恒定电流驱动器的模拟功率模块。模拟电源模块有两个或多个电源。驱动器电路还包括用于向模拟驱动器发送数字控制信号的数字控制器。数字控制器由数字电源模块供电。

7. 发明申请

US20160027385A1 APPARATUS AND METHOD FOR CONTROLLING LED DISPLAY 有权
标题翻译：用于控制LED显示器的装置和方法
公开(公告)号：US20160027385A1
公开(公告)日：2016-01-28
申请号：US14340410
申请日：2014-07-24
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric LI , Shang-Kuan TANG , Wenjie YANG , Yutao CHEN , Tianqi QIU , Jun TIAN , Hui LI
IPC分类号： G09G3/34 , G09G3/32
CPC分类号： G09G3/32 , G09G3/2014
摘要： The current disclosure provides an LED display control circuit. The control circuit has a device configured to separate a first PWM data into LSB data and MSB data. The control circuit also comprises a LSB circuit coupled to a plurality of LED channels. The LSB circuit is configured to supply LSB data to each of the plurality of LED channels.
摘要翻译：本公开提供了一种LED显示控制电路。控制电路具有被配置为将第一PWM数据分离成LSB数据和MSB数据的装置。控制电路还包括耦合到多个LED通道的LSB电路。 LSB电路被配置为向多个LED通道中的每一个提供LSB数据。

8. 发明授权

US09058762B2 Apparatus and method for driving LED display 有权
标题翻译： LED显示屏驱动装置及方法
公开(公告)号：US09058762B2
公开(公告)日：2015-06-16
申请号：US14082841
申请日：2013-11-18
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Shen Lei , Yi Zhang
IPC分类号： H05B37/02 , G09G3/32 , G09G5/10
CPC分类号： G09G5/10 , G09G3/3283 , G09G2320/064 , G09G2330/12 , H03K2005/00202
摘要： This disclosure provides an output stage for a LED driver circuit. The output stage has an input module, a regulator module for maintaining a constant internal voltage, and an output module for generating output signals.
摘要翻译：本公开提供了用于LED驱动器电路的输出级。输出级具有输入模块，用于维持恒定的内部电压的调节器模块和用于产生输出信号的输出模块。

9. 发明申请

US20150109281A1 APPARATUS AND METHOD FOR DRIVING LED DISPLAY 有权
标题翻译：用于驱动LED显示器的装置和方法
公开(公告)号：US20150109281A1
公开(公告)日：2015-04-23
申请号：US14056742
申请日：2013-10-17
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric LI , Shean-Yih CHIOU , Shang-Kuan TANG , Xinchao PENG
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2310/0216 , G09G2310/0245 , G09G2310/08 , G09G2320/0233 , G09G2330/06 , H03L7/1974
摘要： An apparatus for driving LED display includes a plurality of phase locked loop circuits. Each of the phase locked loop circuits includes a divider configured to receive the voltage controlled output signal and generate the feedback signal, a memory configured to generate a modulation profile codes and a sigma delta block. The divider receives a randomized numbers so as to change a dividing ratio over a modulation period. The sigma delta block includes at least one sigma delta modulator and at least one gain block. The sigma delta block is configured to receive the modulation profile codes and generate the randomized numbers to the divider. Each of the at least one gain block is configured to generate a value that is multiplied to at least one of the at least one sigma delta modulator so as to change a spread spectrum modulation depth.
摘要翻译：用于驱动LED显示器的装置包括多个锁相环电路。每个锁相环电路包括被配置为接收压控输出信号并产生反馈信号的分频器，被配置为产生调制分布码和Σ-Δ块的存储器。分频器接收随机数，以便在调制周期上改变分频比。 Σ-Δ块包括至少一个Σ-Δ调制器和至少一个增益块。 Σ-Δ块被配置为接收调制分布码，并将该随机化的数字产生到分频器。所述至少一个增益块中的每一个被配置为生成与所述至少一个Σ-Δ调制器中的至少一个相乘的值，以便改变扩频调制深度。

10. 发明授权

US10566508B2 Molded surface mount device LED display module 有权
公开(公告)号：US10566508B2
公开(公告)日：2020-02-18
申请号：US15984017
申请日：2018-05-18
申请人： SCT TECHNOLOGY, LTD.
发明人： Chang Hung Pan , Heng Liu , Eric Li , Shihfeng Shao
IPC分类号： H01L33/00 , H01L33/56 , H01L27/15 , H01L33/62 , H01L33/54 , H01L33/48
摘要： A light emitting diode (LED) display module includes an array of surface-mount devices (SMDs) arranged in rows and columns on a substrate. Each SMD has red, green, and blue LED chips connected to the substrate and a first transparent resin portion molded around the LED chips; a black resin portion molded around each SMD in a manner to fill spaces between SMDs so as to block light emitted from a sidewall of each SMD; and a second transparent resin portion molded on the first transparent resin portion and the black resin portion.

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