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    METHOD FOR DETERMINING A REFRESH FREQUENCY FOR A MATRIX OF OLED ACTIVE PIXELS AND CORRESPONDING DEVICE
    2.
    发明申请
    METHOD FOR DETERMINING A REFRESH FREQUENCY FOR A MATRIX OF OLED ACTIVE PIXELS AND CORRESPONDING DEVICE 有权
    用于确定OLED有源像素和相应器件的矩阵的刷新频率的方法

    公开(公告)号：US20160078815A1

    公开(公告)日：2016-03-17

    申请号：US14797354

    申请日：2015-07-13

    Applicant: STMicroelectronics International N.V.

    Inventor： Jerome Nebon ,  Jean-Marie Permezel

    IPC: G09G3/32

    CPC classification number: G09G3/3258 ,  G09G3/3225 ,  G09G2300/0413 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/043 ,  G09G2340/0435 ,  G09G2360/147

    Abstract: A device includes an OLED pixel and a control circuit controlled at a refresh rate thereof. The device includes first and second dummy control circuits having similar operating characteristics to the control circuit. A controller and logic circuit switch on the first and second dummy control circuits and apply an input voltage so the first and second dummy control circuits output first and second output voltages. At a first time, the controller and logic circuit switch off the second dummy control circuit so a leakage current flows through the second dummy control circuit to ground, causing the second output voltage to reduce. Comparison circuitry determines a second time at which, due to the reduction of the second output voltage, a difference between the first and second output voltages is greater than a threshold. Determination circuitry determines the refresh frequency based upon elapsed time between the first and second times.

    Abstract translation: 一种器件包括OLED像素和以其刷新率控制的控制电路。 该装置包括具有与控制电路相似的工作特性的第一和第二虚拟控制电路。 控制器和逻辑电路在第一和第二虚拟控制电路上开关并施加输入电压，使得第一和第二虚拟控制电路输出第一和第二输出电压。 第一次，控制器和逻辑电路关闭第二虚拟控制电路，使得漏电流通过第二虚拟控制电路流到地，从而使第二输出电压降低。 比较电路确定第二时间，由于第二输出电压的减小，第一和第二输出电压之间的差大于阈值。 确定电路基于第一次和第二次之间的经过时间来确定刷新频率。

    DEVICE WITH OLED MATRIX OF ACTIVE PIXELS WITH CATHODE VOLTAGE REGULATION, AND CORRESPONDING METHOD
    3.
    发明申请
    DEVICE WITH OLED MATRIX OF ACTIVE PIXELS WITH CATHODE VOLTAGE REGULATION, AND CORRESPONDING METHOD 有权
    具有阴极电压调节的有源像素的OLED矩阵的器件和相应的方法

    公开(公告)号：US20160012767A1

    公开(公告)日：2016-01-14

    申请号：US14730928

    申请日：2015-06-04

    Applicant: STMicroelectronics International N.V.

    Inventor： Jerome Nebon ,  Jean-Marie Permezel

    IPC: G09G3/32

    CPC classification number: G09G3/325 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0413 ,  G09G2300/08 ,  G09G2300/0866 ,  G09G2320/041

    Abstract: A device includes a matrix of active pixels, with each active pixel having an OLED diode having a cathode to receive a cathode voltage, and a control circuit coupled to an anode of the OLED diode. The device also includes at least one dummy pixel having a dummy OLED diode having a cathode to receive the cathode voltage, and an anode, and a dummy control circuit coupled to the anode of the OLED diode and having a power supply terminal. The dummy OLED diode and the dummy control circuit are substantially similar to the OLED diode and the control circuit. First regulation circuitry is configured to deliver a reference current to the power supply terminal to thereby generate a voltage, and second regulation circuitry is configured to regulate the cathode voltage so as to maintain the voltage at the power supply terminal at a given level.

    Abstract translation: 器件包括有源像素矩阵，每个有源像素具有OLED二极管，其具有用于接收阴极电压的阴极，以及耦合到OLED二极管的阳极的控制电路。 该装置还包括至少一个虚拟像素，具有用于接收阴极电压的阴极的虚拟OLED二极管，以及耦合到OLED二极管的阳极并具有电源端子的阳极和虚拟控制电路。 虚拟OLED二极管和虚拟控制电路基本上类似于OLED二极管和控制电路。 第一调节电路被配置为将参考电流传送到电源端子从而产生电压，并且第二调节电路被配置为调节阴极电压，以便将电源端子处的电压保持在给定水平。

    Device with OLED matrix of active pixels with cathode voltage regulation, and corresponding method
    4.
    发明授权
    Device with OLED matrix of active pixels with cathode voltage regulation, and corresponding method 有权

    公开(公告)号：US10482819B2

    公开(公告)日：2019-11-19

    申请号：US15809007

    申请日：2017-11-10

    Applicant: STMicroelectronics International N.V.

    Inventor： Jerome Nebon ,  Jean-Marie Permezel

    IPC: G09G3/325 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275

    Abstract: A device includes a matrix of active pixels, with each active pixel having an OLED diode having a cathode to receive a cathode voltage, and a control circuit coupled to an anode of the OLED diode. The device also includes at least one dummy pixel having a dummy OLED diode having a cathode to receive the cathode voltage, and an anode, and a dummy control circuit coupled to the anode of the OLED diode and having a power supply terminal. The dummy OLED diode and the dummy control circuit are substantially similar to the OLED diode and the control circuit. First regulation circuitry is configured to deliver a reference current to the power supply terminal to thereby generate a voltage, and second regulation circuitry is configured to regulate the cathode voltage so as to maintain the voltage at the power supply terminal at a given level.

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