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    • 4. 发明申请
    • ORGANIC ELECTROLUMINESCENCE DISPLAY
    • 有机电致发光显示
    • US20110316825A1
    • 2011-12-29
    • US12917230
    • 2010-11-01
    • Sang Hyun CHAYoun Joong LEEJae Shin LEE
    • Sang Hyun CHAYoun Joong LEEJae Shin LEE
    • G09G5/00G09G3/30
    • G09G3/3241G09G2320/0223G09G2320/0233
    • Disclosed herein is an organic electroluminescence display. The organic electroluminescence display includes: a plurality of pixels arranged in a matrix format on a display panel and configured of first to N+K-th rows; a plurality of first data lines connected to pixels each in the same column of pixels in the first to N-th rows; a plurality of second data lines connected to pixels each in the same column of pixels in the k+1-th to N+K-th rows; and a plurality of pixel driving buffers sensing time constants of the second data lines and compensating for data currents according to the number of sensed time constants to drive the respective corresponding first data lines with the compensated data currents. The organic electroluminescence display can reduce operation deviation between the pixels according to parasitic components of the data lines.
    • 本文公开了一种有机电致发光显示器。 有机电致发光显示器包括:以矩阵形式排列在显示面板上并由第一至第N + K行构成的多个像素; 连接到第一至第N行的同一列像素中的像素的多个第一数据线; 连接到第k + 1至第N + K行的同一列像素中的像素的多个第二数据线; 以及多个像素驱动缓冲器,用于检测第二数据线的时间常数,并且根据所感测的时间常数的数量补偿数据电流,以用补偿的数据电流来驱动相应的对应的第一数据线。 有机电致发光显示器可以根据数据线的寄生分量来减少像素之间的操作偏差。
    • 5. 发明申请
    • CURRENT DRIVING CIRCUIT AND LIGHT STORAGE SYSTEM HAVING THE SAME
    • 具有相同功能的电流驱动电路和光存储系统
    • US20110317536A1
    • 2011-12-29
    • US12915537
    • 2010-10-29
    • Sang Hyun CHADeuk Hee PARKJae Shin LEE
    • Sang Hyun CHADeuk Hee PARKJae Shin LEE
    • G11B7/00H03K3/00
    • G11B7/126G11B2220/2537
    • Disclosed herein are a current driving circuit and a light storage system having the same. The current driving circuit includes a plurality of channel circuits that include a first transistor into which the input current flows, a second transistor generating the output current by mirroring the input current, a plurality of switches connected between the first and second transistors in parallel and optionally electrically connecting the first and second transistors in response to the control signals, a controller optionally activating the control signals each corresponding to the switches according to the magnitude of the input current; and an adder that adds output currents of the channel circuits to generate driving current. The current driving circuit can stably supply the driving current while preventing a delay in the driving current.
    • 这里公开了一种电流驱动电路和具有该驱动电路的光存储系统。 电流驱动电路包括多个沟道电路,其包括输入电流流入的第一晶体管,通过镜像输入电流产生输出电流的第二晶体管,并联连接在第一和第二晶体管之间的多个开关, 响应于所述控制信号电连接所述第一和第二晶体管,控制器根据所述输入电流的大小可选地启动每个对应于所述开关的控制信号; 以及加法器,其增加通道电路的输出电流以产生驱动电流。 电流驱动电路可以稳定地提供驱动电流,同时防止驱动电流的延迟。
    • 8. 发明申请
    • LED DRIVING APPARATUS AND METHOD
    • LED驱动装置和方法
    • US20120306396A1
    • 2012-12-06
    • US13220041
    • 2011-08-29
    • Change Seok LEEYeun Joong LEEDeuk Hee PARKSang Hyun CHAJae Shin LEE
    • Change Seok LEEYeun Joong LEEDeuk Hee PARKSang Hyun CHAJae Shin LEE
    • H05B37/02
    • H05B33/0815
    • There are provided an LED driving apparatus and an LED driving method thereof. The LED driving apparatus includes: a light emitting unit including one or more LEDs, a rectifying unit rectifying an input signal to generate a first signal; a signal conversion unit inverting a waveform of a first signal to generate a second signal; and an operation unit arithmetically operating the first and second signals. A plurality of AC signals each having a different waveform are arithmetically operated to generate a signal having a small amount of a ripple component, and an LED is driven by the signal, thus preventing a lifespan of the LED from being shortened by omitting a smoothing electrolytic capacitor, one of main causes shortening the lifespan of an LED driving circuit.
    • 提供了LED驱动装置及其LED驱动方法。 LED驱动装置包括:发光单元,包括一个或多个LED;整流单元对输入信号进行整流以产生第一信号; 信号转换单元,反转第一信号的波形以产生第二信号; 以及操作单元,算术地操作第一和第二信号。 每个具有不同波形的多个AC信号被算术运算以产生具有少量纹波分量的信号,并且由信号驱动LED,从而通过省略平滑电解而防止LED的寿命缩短 电容器,主要原因之一是缩短了LED驱动电路的使用寿命。
    • 10. 发明申请
    • APPARATUS FOR DRIVING LIGHT EMITTING DIVICE USING PULSE-WIDTH MODULATOIN
    • 使用脉冲宽度调制器驱动发光灯的装置
    • US20110140627A1
    • 2011-06-16
    • US12770953
    • 2010-04-30
    • Seung Kon KONGJae Shin LEEJung Hyun KIMJung Sun KWONBo Hyun HWANG
    • Seung Kon KONGJae Shin LEEJung Hyun KIMJung Sun KWONBo Hyun HWANG
    • H05B37/02
    • H05B33/0827H05B33/0818
    • An apparatus for driving a light emitting device (LED) is provided. The apparatus for driving the LED includes a first driving control element, a first current detection unit, a first effective value detection unit, a first reference signal generation unit, and a first comparison unit. The first driving control element controls a current flowing through a first LED channel, in response to a first pulse-width modulated control signal. The first current detection unit detects the current flowing through the first LED channel. The first effective value detection unit detects an effective value of the current detected by the first current detection unit. The first reference signal generation unit generates a preset reference signal having a sawtooth waveform. The first comparison unit compares the reference signal from the first reference signal generation unit with the effective value from the first effective value detection unit.
    • 提供了一种用于驱动发光器件(LED)的装置。 用于驱动LED的装置包括第一驱动控制元件,第一电流检测单元,第一有效值检测单元,第一参考信号生成单元和第一比较单元。 响应于第一脉冲宽度调制控制信号,第一驱动控制元件控制流过第一LED通道的电流。 第一电流检测单元检测流过第一LED通道的电流。 第一有效值检测单元检测由第一电流检测单元检测到的电流的有效值。 第一参考信号产生单元产生具有锯齿波形的预设参考信号。 第一比较单元将来自第一参考信号生成单元的参考信号与来自第一有效值检测单元的有效值进行比较。