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    DEVICE WITH OLED MATRIX OF ACTIVE PIXELS WITH CATHODE VOLTAGE REGULATION, AND CORRESPONDING METHOD
    1.
    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
    2.
    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.

    Integrated device comprising a matrix of OLED active pixels with improved dynamic range
    8.
    发明授权
    Integrated device comprising a matrix of OLED active pixels with improved dynamic range 有权
    包括具有改进的动态范围的OLED有源像素矩阵的集成器件

    公开(公告)号：US09521723B2

    公开(公告)日：2016-12-13

    申请号：US14723942

    申请日：2015-05-28

    Applicant: STMicroelectronics International N.V.

    Inventor： Jerome Nebon ,  Christophe Forel

    IPC: H01L27/32 ,  H05B33/08 ,  G09G3/32

    CPC classification number: H05B33/0896 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2320/0247 ,  G09G2320/045

    Abstract: An integrated device includes a semiconducting substrate having a matrix of active pixels formed therein. Each active pixel includes an OLED diode, a first nMOS transistor having its source coupled to an anode of the OLED diode, and a refresh circuit coupled to a gate of the first nMOS transistor. The first nMOS transistor has its source and its substrate coupled together. The first nMOS transistor is situated in and on a first part of the semiconductor substrate, and the refresh circuit is situated in and on a second part of the semiconductor substrate, with the first part and the second part being electrically insulated from one another.

    Abstract translation: 集成器件包括其中形成有有源像素的矩阵的半导体衬底。 每个有源像素包括OLED二极管，其源极耦合到OLED二极管的阳极的第一nMOS晶体管，以及耦合到第一nMOS晶体管的栅极的刷新电路。 第一个nMOS晶体管具有其源极及其衬底耦合在一起。 第一nMOS晶体管位于半导体衬底的第一部分中并且位于半导体衬底的第一部分上，并且刷新电路位于半导体衬底的第二部分中并位于半导体衬底的第二部分上，其中第一部分和第二部分彼此电绝缘。

    METHOD FOR DETERMINING A REFRESH FREQUENCY FOR A MATRIX OF OLED ACTIVE PIXELS AND CORRESPONDING DEVICE
    9.
    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。

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