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公开(公告)号：US20210080767A1
公开(公告)日：2021-03-18
申请号：US16308477
申请日：2018-09-13
Inventor： Bingjei Liao , Yuhua Chang , Anle Hu
IPC: G02F1/1347 , G02F1/1368 , G02F1/1335 , G09G3/36 , G09G3/34
Abstract: The present invention teaches a LCD device, including a backlight module, a first LCD panel disposed on top of the backlight module, and a second LCD panel disposed on top of the first LCD panel. The first LCD panel divides the light from the backlight module into n×m partitions, where n×m is the first LCD panel. Therefore the number of backlight partitions is significantly increased. The first LCD panel does not have a CF substrate, and therefore the first LCD panel functions like a monoc screen, controlling the transmittance of each partition and providing to the backlight partition by partition. The backlight, after being adjusted partition-wise by the first LCD panel, is then incident into the second LCD panel for color display, thereby achieving better contrast, improved display effect, and enhanced display quality.
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2.发明申请公开(公告)号：US20180108315A1
公开(公告)日：2018-04-19
申请号：US15105567
申请日：2016-04-12
Inventor： Yinhung Chen , Yu Wu , Anle Hu
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G3/36 , G09G3/3674 , G09G2310/0251 , G09G2320/0223 , G09G2320/0233 , G09G2320/0257
Abstract: The present invention provides a drive method of a liquid crystal display panel and a drive system, in which a sequence controller (3) comprises a counter (31), a TFT activation voltage calculation module (32) and an I2C instruction module (33), and the counter (31) adds 1 as outputting the display data of each row, and as adding to i×M/N, the TFT activation voltage calculation module (32) operates to obtain the target TFT activation voltage of the i+1th gate drive IC (GD(i+1)) and transmits the same to the I2C instruction module (33), and the I2C instruction module (33) controls the PWM IC (2) correspondingly output the corresponding target TFT activation voltage to the i+1th gate drive IC (GD(i+1)), which can adjust the TFT activation voltage in real time so that the TFT activation voltages, which the respective gate drive ICs actually receive are consistent.
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公开(公告)号：US08890417B2
公开(公告)日：2014-11-18
申请号：US13806807
申请日：2012-11-23
CPC classification number: H05B33/0851
Abstract: A light emitting diode (LED) backlight driving circuit includes an LED lightbar, and a constant current chip that controls current flowing through the LED lightbar. The LED backlight driving circuit further includes a comparison module that receives an output voltage of the LED lightbar. When the output voltage of the LED lightbar is greater than the preset reference voltage, the comparison module controls the constant current chip to switch off the current of the LED lightbar.
Abstract translation: 发光二极管（LED）背光驱动电路包括LED灯条和控制流过LED灯条的电流的恒流芯片。 LED背光驱动电路还包括接收LED灯条的输出电压的比较模块。 当LED灯条的输出电压大于预设参考电压时，比较模块控制恒流芯片关闭LED灯条的电流。
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公开(公告)号：US09230490B2
公开(公告)日：2016-01-05
申请号：US13809448
申请日：2012-12-26
Inventor： Anle Hu , Xiang Yang
IPC: G09G3/34
CPC classification number: G09G3/3426 , G09G2330/02
Abstract: A light emitting diode (LED) backlight driver circuit includes an LED lightbar and a driver module of the LED lightbar. The driver module includes a backlight driver integrated chip (IC) regulating an output voltage of the driver module, and the backlight driver IC includes a first comparator correcting the output voltage of the driver module. The output end of each LED lightbar is coupled to an inverting input end of the first comparator, and a non-inverting input end of the first comparator is coupled to a protection module. The protection module includes a detection unit detecting an output current of the driver module. When the output current of the driver module detected by the detection unit is greater than a preset first current, the protection module outputs a first reference voltage to the non-inverting input end of the first comparator. When the output current of the driver module detected by the detection unit is lower than the preset first current, the protection module outputs a second reference voltage, which is lower than the first reference voltage, to the non-inverting input end of the first comparator.
Abstract translation: 发光二极管（LED）背光驱动电路包括LED灯条和LED灯条的驱动器模块。 驱动器模块包括调节驱动器模块的输出电压的背光驱动器集成芯片（IC），并且背光驱动器IC包括校正驱动器模块的输出电压的第一比较器。 每个LED灯条的输出端耦合到第一比较器的反相输入端，第一比较器的非反相输入端耦合到保护模块。 保护模块包括检测驱动器模块的输出电流的检测单元。 当由检测单元检测到的驱动器模块的输出电流大于预设的第一电流时，保护模块将第一参考电压输出到第一比较器的非反相输入端。 当由检测单元检测到的驱动器模块的输出电流低于预设的第一电流时，保护模块将低于第一参考电压的第二参考电压输出到第一比较器的非反相输入端 。
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公开(公告)号：US09058776B2
公开(公告)日：2015-06-16
申请号：US14006315
申请日：2013-08-08
CPC classification number: G09G3/3406 , G09G2330/00 , H05B33/0827 , H05B33/0887 , Y02B20/341
Abstract: A LED backlight source and a liquid crystal device are disclosed. The LED backlight source includes: a boost circuit for boosting an input DC voltage and for outputting the boosted DC voltage; a plurality of LED strings connected in parallel, wherein each of the LED strings comprises a plurality of serially connected LEDs and a first resistor, and each of the LED strings receives the boosted DC voltage from the boost circuit; an over-current protection circuit for controlling an output power of the boost circuit according to a detected resistance; and a short-connection protection circuit for adjusting the resistance detected by the over-current protection circuit according to a voltage at two ends of the first resistor.
Abstract translation: 公开了一种LED背光源和液晶装置。 LED背光源包括：升压电路，用于升压输入直流电压并输出升压的直流电压; 并联连接的多个LED串，其中每个所述LED串包括多个串联LED和第一电阻器，并且每个所述LED串从所述升压电路接收升压的DC电压; 用于根据检测到的电阻来控制升压电路的输出功率的过电流保护电路; 以及短路保护电路，用于根据第一电阻器两端的电压来调节由过电流保护电路检测到的电阻。
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Patent Agency Ranking
6.发明申请BACKLIGHT DRIVING CIRCUIT, LCD DEVICE, AND METHOD FOR DRIVING BACKLIGHT DRIVING CIRCUIT 有权背光驱动电路，液晶显示装置及驱动背光驱动电路的方法公开(公告)号：US20140292200A1
公开(公告)日：2014-10-02
申请号：US13880742
申请日：2013-04-07
Inventor： Anle Hu , Xianming Zhang
IPC: H05B33/08
CPC classification number: H05B33/0887 , H05B33/0815 , H05B33/0827 , H05B33/0848 , Y02B20/341
Abstract: A backlight driving circuit includes a power module and a constant current driver chip. The power module includes a first controllable switch. An adjustable load is connected between the first controllable switch and a round terminal of the backlight driving circuit, and the adjustable load includes a switching module controlling a resistance value of the adjustable load, a switching mode signal of the backlight driving circuit is sent to a control end of the switching module. A first end of the adjustable load that is connected to the first controllable switch is coupled to an over current protection (O(P) port of the constant current driver chip,
Abstract translation: 背光驱动电路包括电源模块和恒流驱动芯片。 功率模块包括第一可控开关。 在第一可控开关和背光驱动电路的圆形端子之间连接有可调节的负载，并且可调负载包括控制可调节负载的电阻值的开关模块，背光驱动电路的开关模式信号被发送到 开关模块的控制端。 连接到第一可控开关的可调负载的第一端耦合到恒流驱动器芯片的过电流保护（O（P））端口，
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公开(公告)号：US20140139110A1
公开(公告)日：2014-05-22
申请号：US13806807
申请日：2012-11-23
IPC: H05B33/08
CPC classification number: H05B33/0851
Abstract: A light emitting diode (LED) backlight driving circuit includes an LED lightbar, and a constant current chip that controls current flowing through the LED lightbar. The LED backlight driving circuit further includes a comparison module that receives an output voltage of the LED lightbar. When the output voltage of the LED lightbar is greater than the preset reference voltage, the comparison module controls the constant current chip to switch off the current of the LED lightbar.
Abstract translation: 发光二极管（LED）背光驱动电路包括LED灯条和控制流过LED灯条的电流的恒流芯片。 LED背光驱动电路还包括接收LED灯条的输出电压的比较模块。 当LED灯条的输出电压大于预设参考电压时，比较模块控制恒流芯片关闭LED灯条的电流。
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公开(公告)号：US20180102100A1
公开(公告)日：2018-04-12
申请号：US15105568
申请日：2016-04-08
Inventor： Yinhung Chen , Yu Wu , Anle Hu
CPC classification number: G09G3/3644 , G09G3/2014 , G09G3/2074 , G09G3/36 , G09G3/3674 , G09G2310/067
Abstract: The present invention provides a drive method of a liquid crystal display panel, in which the counter (21), and the pulse modulation module (22) are located in the sequence controller (2), and the counter (21) in the sequence controller (2) pluses 1 as the sequence controller (2) outputs the display data of each row, and as the counter (21) in the sequence controller (2) pluses to i×M/N, the pulse modulation module (22) in the sequence controller (2) sends one pulse control signal (CS) to the i+1th gate drive IC correspondingly driving the i+1th pixel display region (Zone(i+1)) to control the i+1th gate drive IC (GD(i+1)) to output the target TFT activation voltage corresponding to the i+1th gate drive IC (GD(i+1)) after the internal calculation and the conversion, and thus the TFT activation voltage can be dynamically adjusted in real time.
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公开(公告)号：US20150160666A1
公开(公告)日：2015-06-11
申请号：US14240377
申请日：2014-01-21
IPC: G05F1/56
Abstract: The present invention relates to a circuit and method for optimizing an input voltage range of an IC chip. In the circuit, a pull-up unit, receives an input voltage and then outputs a corresponding voltage level; a trigger unit compares the voltage level output by the pull-up unit with a given threshold voltage, and outputs an enabling signal of corresponding level to an enabling end of the IC chip based on the comparison result, so as to control the IC chip to start/stop; and a voltage stabilizing unit receives the voltage levels output by the pull-up unit and the trigger unit, and then outputs a voltage of corresponding level to the pull-up unit based on the voltage levels output by the pull-up unit and the trigger unit, so that the voltage level output by the pull-up unit is higher than or equal to the threshold voltage and thereby the IC chip starts operation, or so that the voltage level output by the pull-up unit is maintained to be higher than or equal to the threshold voltage and thereby the operation of the IC chip is not affected by variations of the input voltage. The present invention can ensure that when the input voltage is changed within a certain range the IC still can work in a normal manner.
Abstract translation: 本发明涉及一种用于优化IC芯片的输入电压范围的电路和方法。 在该电路中，上拉单元接收输入电压，然后输出相应的电压电平; 触发单元将上拉单元输出的电压电平与给定的阈值电压进行比较，并根据比较结果将相应电平的使能信号输出到IC芯片的使能端，以便将IC芯片 开始/停止 并且电压稳定单元接收上拉单元和触发单元输出的电压电平，然后基于上拉单元和触发器输出的电压电平向上拉单元输出相应电平的电压 单元，使得上拉单元输出的电压电平高于或等于阈值电压，从而IC芯片开始运行，或者使得上拉单元输出的电压电平维持为高于 或等于阈值电压，从而IC芯片的操作不受输入电压变化的影响。 本发明可以确保当输入电压在一定范围内变化时，IC仍能以正常的方式工作。
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公开(公告)号：US20150042925A1
公开(公告)日：2015-02-12
申请号：US14006315
申请日：2013-08-08
CPC classification number: G09G3/3406 , G09G2330/00 , H05B33/0827 , H05B33/0887 , Y02B20/341
Abstract: A LED backlight source and a liquid crystal device are disclosed. The LED backlight source includes: a boost circuit for boosting an input DC voltage and for outputting the boosted DC voltage; a plurality of LED strings connected in parallel, wherein each of the LED strings comprises a plurality of serially connected LEDs and a first resistor, and each of the LED strings receives the boosted DC voltage from the boost circuit; an over-current protection circuit for controlling an output power of the boost circuit according to a detected resistance; and a short-connection protection circuit for adjusting the resistance detected by the over-current protection circuit according to a voltage at two ends of the first resistor.
Abstract translation: 公开了一种LED背光源和液晶装置。 LED背光源包括：升压电路，用于升压输入直流电压并输出升压的直流电压; 并联连接的多个LED串，其中每个所述LED串包括多个串联LED和第一电阻器，并且每个所述LED串从所述升压电路接收升压的DC电压; 用于根据检测到的电阻来控制升压电路的输出功率的过电流保护电路; 以及短路保护电路，用于根据第一电阻器两端的电压来调节由过电流保护电路检测到的电阻。
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