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1. 发明授权

US08212749B2 AMOLED drive circuit using transient current feedback and active matrix driving method using the same 有权
标题翻译： AMOLED驱动电路采用瞬态电流反馈和有源矩阵驱动方式使用
公开(公告)号：US08212749B2
公开(公告)日：2012-07-03
申请号：US11693819
申请日：2007-03-30
申请人： Gyu-Hyeong Cho , Young-Suk Son , Sang-Kyung Kim , Jin-Yong Jeon , Gun-Ho Lee
发明人： Gyu-Hyeong Cho , Young-Suk Son , Sang-Kyung Kim , Jin-Yong Jeon , Gun-Ho Lee
IPC分类号： G09G3/32
CPC分类号： G09G3/3283 , G09G3/3241 , G09G2300/043 , G09G2310/0248 , G09G2320/0223 , G09G2320/0252
摘要： Disclosed herein is an Active Matrix Organic Light-Emitting-Diode (AMOLED) drive circuit using transient current feedback. The AMOLED drive circuit includes a current Digital-to-Analog Converter (DAC), a data line drive transistor, a constant current source, a variable current source, a differential amplifier, and a transient charging current control unit. The DAC generates current corresponding to input digital data. The data line drive transistor is configured such that the drain terminal thereof is connected to the output node of the current DAC. The constant current source is connected between the source terminal of the data line drive transistor and a ground. The variable current source is connected between both the output node of the current DAC and the drain terminal of the drive transistor, and a voltage source. The differential amplifier is configured to input the output voltage thereof to the gate terminal of the drive transistor. The transient charging current control unit is configured to increase or decrease the bias current of the variable current source depending on variation in the voltage of the output node of the current DAC.
摘要翻译：本文公开了使用瞬态电流反馈的有源矩阵有机发光二极管（AMOLED）驱动电路。 AMOLED驱动电路包括当前的数模转换器（DAC），数据线驱动晶体管，恒流源，可变电流源，差分放大器和瞬态充电电流控制单元。 DAC产生对应于输入数字数据的电流。数据线驱动晶体管被配置成使得其漏极端子连接到电流DAC的输出节点。恒流源连接在数据线驱动晶体管的源极端子和地之间。可变电流源连接在电流DAC的输出节点和驱动晶体管的漏极端子和电压源之间。差分放大器被配置为将其输出电压输入到驱动晶体管的栅极端子。瞬态充电电流控制单元被配置为根据当前DAC的输出节点的电压变化来增加或减小可变电流源的偏置电流。

2. 发明申请

US20110298769A1 LIQUID CRYSTAL DISPLAY DRIVING CIRCUIT WITH LESS CURRENT CONSUMPTION 有权
标题翻译：液晶显示驱动电路，消耗电流不足
公开(公告)号：US20110298769A1
公开(公告)日：2011-12-08
申请号：US13201989
申请日：2010-01-29
申请人： Hyun Ho Cho , Young Icc Jung , Young Suk Son , Joon Ho Na , Hyung Seog Oh , Dae Seong Kim , Dae Keun Han
发明人： Hyun Ho Cho , Young Icc Jung , Young Suk Son , Joon Ho Na , Hyung Seog Oh , Dae Seong Kim , Dae Keun Han
IPC分类号： G09G3/36 , G09G5/00
CPC分类号： G09G3/3688 , G09G3/3614 , G09G2330/021
摘要： An LCD driving circuit includes a first buffer configured to have a terminal for a first voltage, a terminal for a second voltage and a terminal for an intermediate voltage between the first voltage and the second voltage, and be driven in a range from the first voltage to the intermediate voltage; and a second buffer configured to have a terminal for the first voltage, a terminal for the second voltage and a terminal for the intermediate voltage, and be driven in a range from the intermediate voltage to the second voltage. The terminal for the intermediate voltage of the first buffer and the terminal for the intermediate voltage of the second buffer are connected with each other, and the first voltage is a highest voltage, the second voltage is a lowest voltage, and the intermediate voltage is in a range from the first voltage to the second voltage.
摘要翻译： LCD驱动电路包括：第一缓冲器，被配置为具有用于第一电压的端子，用于第二电压的端子和用于第一电压和第二电压之间的中间电压的端子，并且在从第一电压到中间电压; 以及第二缓冲器，被配置为具有用于第一电压的端子，用于第二电压的端子和用于中间电压的端子，并且在从中间电压到第二电压的范围内被驱动。第一缓冲器的中间电压的端子和第二缓冲器的中间电压的端子彼此连接，第一电压为最高电压，第二电压为最低电压，中间电压为从第一电压到第二电压的范围。

3. 发明申请

US20110199821A1 POWER MANAGEMENT CHIP FURNISHED WITH VOLTAGE CONTROLLER 审中-公开
标题翻译：电源管理芯片带电压控制器
公开(公告)号：US20110199821A1
公开(公告)日：2011-08-18
申请号：US13124825
申请日：2009-10-13
申请人： Young Suk Son , Yong Sung Ahn , Hyun Ja Cho , Hyung Seog Oh , Dae Keun Han
发明人： Young Suk Son , Yong Sung Ahn , Hyun Ja Cho , Hyung Seog Oh , Dae Keun Han
IPC分类号： G11C16/06
CPC分类号： G11C16/30 , G09G3/3648 , G09G3/3696 , G09G2330/02 , G09G2330/021 , G11C5/145
摘要： A power management IC includes a first IC having a boost converter IC which generates a second voltage using a first voltage supplied from an outside and supplies the second voltages to a charge pump, a reference voltage generation circuit, and an EEPROM; and a second IC configured to be inputted with a third voltage and a fourth voltage as outputs of the charge pump and output a fifth voltage and a sixth voltage. The second IC has a voltage regulator which regulates the third voltage and the fourth voltage or the fifth voltage and the sixth voltage and generates an eighth voltage and a ninth voltage as voltages required for programming operation or erasing operation of the EEPROM.
摘要翻译：电源管理IC包括具有升压转换器IC的第一IC，其使用从外部提供的第一电压产生第二电压，并将第二电压提供给电荷泵，参考电压产生电路和EEPROM; 以及第二IC，被配置为输入第三电压和第四电压作为电荷泵的输出，并输出第五电压和第六电压。第二IC具有调节第三电压和第四电压或第五电压和第六电压的电压调节器，并且产生作为EEPROM的编程操作或擦除操作所需的电压的第八电压和第九电压。

4. 发明授权

US07605792B2 Driving method and circuit for automatic voltage output of active matrix organic light emitting device and data drive circuit using the same 失效
标题翻译：有源矩阵有机发光器件的自动电压输出的驱动方法和电路及使用其的数据驱动电路
公开(公告)号：US07605792B2
公开(公告)日：2009-10-20
申请号：US11367864
申请日：2006-03-03
申请人： Young-Suk Son , Sang-Kyung Kim , Gyu-Hyeong Cho
发明人： Young-Suk Son , Sang-Kyung Kim , Gyu-Hyeong Cho
IPC分类号： G09G3/36
CPC分类号： G09G3/3233 , G09G3/2014 , G09G2300/0857 , G09G2310/066
摘要： Disclosed herein is a driving method and circuit for the automatic voltage output of an active matrix organic light emitting device, which is capable of resolving the non-uniformity of brightness between pixels. The circuit of the present invention includes timing generation means for generating a data drive start signal; sweep voltage generation means for generating a sweep voltage signal in response to output of the timing generation means; current level detection means for sensing an amount of current, which flows into pixels, based on output of the sweep voltage generation means, and outputting a sensing result to a data line; comparison means for comparing output of the current level detection means with a reference signal that determines stop timing for data writing, and outputting a comparison result; and data writing start/end control signal generation means for starting to operate in response to the output of the timing generation means, and generating data writing start and end control signals to a program stop line of a display panel. The invention can shorten data writing time and improve the precision of data writing. Furthermore, the present invention can simplify a data drive circuit and achieve the uniformity of brightness between pixels.
摘要翻译：这里公开了一种用于有源矩阵有机发光器件的自动电压输出的驱动方法和电路，其能够解决像素之间的亮度的不均匀性。本发明的电路包括用于产生数据驱动开始信号的定时产生装置; 扫描电压产生装置，用于响应于定时产生装置的输出产生扫描电压信号; 电流电平检测装置，用于基于扫描电压产生装置的输出来感测流入像素的电流量，并将感测结果输出到数据线; 比较装置，用于将电流电平检测装置的输出与确定数据写入的停止定时的参考信号进行比较，并输出比较结果; 以及数据写入开始/结束控制信号发生装置，用于响应于定时产生装置的输出开始工作，并且向显示面板的程序停止线产生数据写入开始和结束控制信号。本发明可以缩短数据写入时间，提高数据写入精度。此外，本发明可以简化数据驱动电路并实现像素之间的亮度的均匀性。

5. 发明申请

US20070290911A1 Digital-To-Analog Converter 失效
标题翻译：数模转换器
公开(公告)号：US20070290911A1
公开(公告)日：2007-12-20
申请号：US11754431
申请日：2007-05-29
申请人： Gyu Hyeong Cho , Yong-Joon Jeon , Young-Suk Son , Sang Kyung Kim , Jin Yong Jeon , Gun Ho Lee
发明人： Gyu Hyeong Cho , Yong-Joon Jeon , Young-Suk Son , Sang Kyung Kim , Jin Yong Jeon , Gun Ho Lee
IPC分类号： H03M1/66
CPC分类号： H03M1/745
摘要： A digital-to-analog converter comprises a current supplier, a current divider dividing current supplied from the current supplier into certain amounts, an inverter outputting inverted signals of input signals and non-inverted signals, a switch controlling a flow of the current divided into the certain amounts by the current divider according to the inverted signals and the non-inverted signals, and a current output block adding up the current divided into the certain amounts according to the non-inverted signals to output an analog signal. The digital-to-analog converter can be implemented on a small chip area with desired resolution.
摘要翻译：一个数模转换器包括一个当前供应商，一个分流器，从当前供应商提供一定的电流，反相器输出反相信号的输入信号和非反相信号;一个开关控制电流分流根据反相信号和非反相信号通过电流除法器确定一定量，以及根据非反相信号将分成一定量的电流相加的电流输出块，以输出模拟信号。数模转换器可以在具有所需分辨率的小芯片区域上实现。

6. 发明授权

US08717338B2 Display drive circuit 有权
标题翻译：显示驱动电路
公开(公告)号：US08717338B2
公开(公告)日：2014-05-06
申请号：US13063539
申请日：2009-09-04
申请人： Young-Suk Son , Hyun-Min Song , Hyun-Ja Cho , Yong-Sung Ahn , Hyung-Seog Oh , Dae-Keun Han
发明人： Young-Suk Son , Hyun-Min Song , Hyun-Ja Cho , Yong-Sung Ahn , Hyung-Seog Oh , Dae-Keun Han
IPC分类号： G06F3/038
CPC分类号： G09G3/3614 , G09G3/3688 , G09G2310/0248 , G09G2310/0297 , G09G2330/021
摘要： A display driving circuit includes a buffer section, an N-dot switch circuit, a charge sharing switch circuit, and a sharing voltage level control switch circuit. The buffer section buffers a plurality of pixel driving signals outputted from a plurality of DACs. The N-dot switch circuit selects paths of the plurality of pixel driving signals outputted from the buffer section in response to a first path selecting signal or a second path selecting signal that is determined depending upon a dot inversion method, and switches the paths to a plurality of output terminals. The charge sharing switch circuit shares charges among the plurality of output terminals in response to a charge sharing control signal. The sharing voltage level control switch circuit controls charge sharing between the plurality of output terminals and a voltage level upon charge sharing, in response to a sharing voltage level control signal.
摘要翻译：显示驱动电路包括缓冲器部分，N点开关电路，电荷共享开关电路和共享电压电平控制开关电路。缓冲器部分缓冲从多个DAC输出的多个像素驱动信号。 N点开关电路响应于根据点反转方法确定的第一路径选择信号或第二路径选择信号，选择从缓冲器部分输出的多个像素驱动信号的路径，并将路径切换到多个输出端子。电荷共享开关电路响应于电荷共享控制信号而在多个输出端子之间共享电荷。响应于共享电压电平控制信号，共享电压电平控制开关电路控制多个输出端子之间的电荷共享和电荷共享时的电压电平。

7. 发明申请

US20110157129A1 SOURCE DRIVER CIRCUIT OF LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
标题翻译：液晶显示装置的源驱动电路
公开(公告)号：US20110157129A1
公开(公告)日：2011-06-30
申请号：US12974584
申请日：2010-12-21
申请人： Hyun-Min SONG , Young-Suk Son , Ji-Hum Kim , Joon-Ho Na
发明人： Hyun-Min SONG , Young-Suk Son , Ji-Hum Kim , Joon-Ho Na
IPC分类号： G09G3/36 , G09G5/00
CPC分类号： G09G3/36 , G09G3/3685 , G09G3/3696 , G09G2300/0408 , G09G2320/0252
摘要： A source driver circuit of a liquid crystal display device including a gamma buffer. The gamma buffer includes a differential amplification section configured to differentially amplify an input signal; a current mirror section configured to operate as a current mirror; an enable section configured to convert the differential amplification section from a standby mode to an enable mode by a bias voltage; a power drop speed improvement section configured to respectively connect drains of the two PMOS transistors of the current mirror section and drains of the two NMOS transistors of the differential amplification section through two diode coupling type MOS transistors, and shorten a recovery time after a power drop; and an output section configured to be determined in a bias level thereof by the bias voltage and generate an output voltage according to a voltage of a downstream node on one side of the current mirror section.
摘要翻译：一种包括伽马缓冲器的液晶显示装置的源极驱动电路。伽马缓冲器包括被配置为差分放大输入信号的差分放大部分; 配置为作为电流镜操作的电流镜部; 使能部分，被配置为通过偏置电压将差分放大部分从待机模式转换为使能模式; 功率下降速度改善部分，被配置为通过两个二极管耦合型MOS晶体管分别连接电流镜部分的两个PMOS晶体管的漏极和差分放大部分的两个NMOS晶体管的漏极，并且在掉电之后缩短恢复时间 ; 以及输出部，被配置为通过偏置电压在其偏置电平中确定，并且根据当前镜部的一侧上的下游节点的电压产生输出电压。

8. 发明授权

US07609234B2 Pixel circuit and driving method for active matrix organic light-emitting diodes, and display using the same 失效
标题翻译：有源矩阵有机发光二极管的像素电路和驱动方法，并使用相同的显示器
公开(公告)号：US07609234B2
公开(公告)日：2009-10-27
申请号：US11232819
申请日：2005-09-22
申请人： Gyu-Hyeong Cho , Young-Suk Son , Sang-Kyung Kim , Min-Chul Lee
发明人： Gyu-Hyeong Cho , Young-Suk Son , Sang-Kyung Kim , Min-Chul Lee
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/2014 , G09G3/3258 , G09G2300/0842 , G09G2300/0861 , G09G2310/0259 , G09G2310/0297 , G09G2310/066 , G09G2320/0233
摘要： Disclosed herein are a pixel circuit and driving method for active matrix Organic Light-emitting Diodes (OLEDs), and a display using the same. The pixel circuit includes a Voltage Control Current Source (VCCS), a high gain amplifier, a storage capacitor, and first and second switches. The VCCS is configured to drive OLEDs. The high gain amplifier is configured such that the control input signal of the VCCS causes the VCCS to be placed in an ON or OFF state. The storage capacitor is located between the input terminal of the high gain amplifier and a data line so as to assign the ON-time of the VCCS. The first and second switches are configured to be controlled through a scan line so as to store voltage in the storage capacitor and control the light-emitting time of the OLEDs, and are formed the input terminal of the high gain amplifier and the input terminal of the VCCS, respectively.
摘要翻译：这里公开了用于有源矩阵有机发光二极管（OLED）的像素电路和驱动方法以及使用其的显示器。像素电路包括电压控制电流源（VCCS），高增益放大器，存储电容器以及第一和第二开关。 VCCS配置为驱动OLED。高增益放大器配置为使得VCCS的控制输入信号使VCCS置于ON或OFF状态。存储电容器位于高增益放大器的输入端和数据线之间，以分配VCCS的导通时间。第一和第二开关被配置为通过扫描线进行控制，以将电压存储在存储电容器中并控制OLED的发光时间，并且形成高增益放大器的输入端和输入端 VCCS。

9. 发明授权

US07515081B2 High resolution digital-to-analog converter 失效
标题翻译：高分辨率数模转换器
公开(公告)号：US07515081B2
公开(公告)日：2009-04-07
申请号：US11754431
申请日：2007-05-29
申请人： Gyu Hyeong Cho , Yong-Joon Jeon , Young-Suk Son , Sang Kyung Kim , Jin Yong Jeon , Gun Ho Lee
发明人： Gyu Hyeong Cho , Yong-Joon Jeon , Young-Suk Son , Sang Kyung Kim , Jin Yong Jeon , Gun Ho Lee
IPC分类号： H03M1/66
CPC分类号： H03M1/745
摘要： A digital-to-analog converter comprises a current supplier, a current divider dividing current supplied from the current supplier into certain amounts, an inverter outputting inverted signals of input signals and non-inverted signals, a switch controlling a flow of the current divided into the certain amounts by the current divider according to the inverted signals and the non-inverted signals, and a current output block adding up the current divided into the certain amounts according to the non-inverted signals to output an analog signal. The digital-to-analog converter can be implemented on a small chip area with desired resolution.
摘要翻译：一个数模转换器包括一个当前供应商，一个分流器，从当前供应商提供一定的电流，反相器输出反相信号的输入信号和非反相信号;一个开关控制电流分流根据反相信号和非反相信号通过电流除法器确定一定量，以及根据非反相信号将分成一定量的电流相加的电流输出块，以输出模拟信号。数模转换器可以在具有所需分辨率的小芯片区域上实现。

10. 发明授权

US07339511B2 Time division sampling digital to analog converter for driving flat panel display, method of implementing the same, and data driver circuit using the same 失效
标题翻译：用于驱动平板显示器的时分采样数模转换器，其实现方法和使用其的数据驱动电路
公开(公告)号：US07339511B2
公开(公告)日：2008-03-04
申请号：US11367865
申请日：2006-03-03
申请人： Young-Suk Son , Sang-Kyung Kim , Gyu-Hyeong Cho
发明人： Young-Suk Son , Sang-Kyung Kim , Gyu-Hyeong Cho
IPC分类号： H03M1/66
CPC分类号： H03M1/682 , G09G3/20 , G09G3/2011 , G09G2310/027 , G09G2310/0272 , G09G2310/08 , G09G2320/0276
摘要： Disclosed herein are a time division sampling digital to analog converter for a flat panel display, a method of implementing the digital to analog converter, and a data driver circuit using the digital to analog converter. The time division sampling digital to analog converter includes a timing signal generation means for generating timing signals, a data selection means for receiving n-bit digital data, dividing the n-bit digital data into k groups, and outputting the divided digital input data; k reference signal generation means for each outputting 2n/k analog reference signals; a reference signal selection means for receiving the outputs of the reference signal generation means and outputting only 2n/k analog reference signals selected according to a timing signal from the timing signal generation means; a multiplexer for outputting one of reference signals from the reference signal selection means using the n/k-bit digital data from the data selection means as a control input; and a sampling mode analog addition means for sampling and storing the output of the multiplexer according to a timing signal from the timing signal generation means.
摘要翻译：这里公开了用于平板显示器的时分采样数模转换器，实现数模转换器的方法和使用数模转换器的数据驱动器电路。时分采样数模转换器包括用于产生定时信号的定时信号产生装置，用于接收n位数字数据的数据选择装置，将n位数字数据分成k组，并输出分割数字输入数据; k个参考信号产生装置，用于每个输出2个/ k个模拟参考信号; 参考信号选择装置，用于接收参考信号产生装置的输出，并且仅输出根据来自定时信号产生装置的定时信号选择的2个/ n / k个模拟参考信号; 多路复用器，用于使用来自数据选择装置的n / k位数字数据作为控制输入，从参考信号选择装置输出参考信号之一; 以及采样模式加法装置，用于根据来自定时信号产生装置的定时信号对多路复用器的输出进行采样和存储。

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