Driving circuit for organic thin film EL elements
    71.
    发明授权
    Driving circuit for organic thin film EL elements 有权
    有机薄膜EL元件的驱动电路

    公开(公告)号:US06545651B2

    公开(公告)日:2003-04-08

    申请号:US09923989

    申请日:2001-08-07

    IPC分类号: G09G330

    摘要: A pulse generator 1 creates a pulse in synchronization with a driving pulse 26. A charging circuit 2 charges EL elements 20 only for a period which is determined by an output from the pulse generator 1. The charging time is determined by resistance of a switching element 3 in its on condition and a junction capacity of the EL elements 20.

    摘要翻译: 脉冲发生器1与驱动脉冲26同步地产生脉冲。充电电路2仅对来自脉冲发生器1的输出所确定的周期充电EL元件20.充电时间由开关元件的电阻 3处于其开启状态和EL元件20的结电容。

    Active matrix electroluminescent display device

    公开(公告)号:US06542138B1

    公开(公告)日:2003-04-01

    申请号:US09658925

    申请日:2000-09-11

    IPC分类号: G09G330

    摘要: An active matrix electroluminescent display device in which the drive current through an electroluminescent display element (20) in each pixel (10) in a drive period is controlled by a driving device (22) based on a drive signal applied during a preceding address period and stored as a voltage on an associated storage capacitor (36). In order to counteract the effects of display element ageing, through which the light output for a given drive signal level diminishes over time, the pixel includes electro-optic discharging means (40) coupled to the storage capacitor and responsive to the display element's light output to leak stored charge and to control the integrated light output of the display element in the drive period. For improved control, the discharging means is arranged to rapidly discharge the capacitor at a controlled point in the drive period, upon the drive of the display element falling to a low level. A photoresponsive transistor can conveniently be utilised for this purpose.

    Active driving circuit for display panel
    73.
    发明授权
    Active driving circuit for display panel 有权
    显示面板主动驱动电路

    公开(公告)号:US06535185B2

    公开(公告)日:2003-03-18

    申请号:US09797957

    申请日:2001-03-05

    IPC分类号: G09G330

    摘要: An active driving circuit for a display panel includes first to fourth transistors, a capacitor, a constant current source, and a capacitor. The first transistor is connected with a positive power source. The second transistor has a common gate terminal together with the first transistor and a mirror circuit against the first transistor. Also, the second transistor is turned on by a common gate signal applied to the common gate terminal to supply the positive power source to a display device. The third transistor sets a saturated threshold voltage for the common gate terminal by allowing the first transistor and the second transistor to constitute a mirror circuit against each other in accordance with a scan line signal. The constant current source supplies a current with a ground one side and controlled by a gray signal of a data line. The fourth transistor sets the common gate voltage corresponding to the controlled current of the constant current source by the scan line signal. The capacitor accumulates charges corresponding to the difference between the positive power source and the common gate voltage.

    摘要翻译: 用于显示面板的主动驱动电路包括第一至第四晶体管,电容器,恒流源和电容器。 第一晶体管与正电源连接。 第二晶体管具有与第一晶体管一起的公共栅极端子和抵抗第一晶体管的反射镜电路。 此外,第二晶体管由施加到公共栅极端子的公共栅极信号导通,以将正电源提供给显示装置。 第三晶体管通过允许第一晶体管和第二晶体管根据扫描线信号彼此构成反射镜电路,来设置公共栅极端子的饱和阈值电压。 恒流源为地电一侧提供电流,并由数据线的灰度信号控制。 第四晶体管将与恒流源的受控电流对应的公共栅极电压设置为扫描线信号。 电容器累积对应于正电源和公共栅极电压之间的差的电荷。

    Liquid crystal apparatus
    74.
    发明授权
    Liquid crystal apparatus 失效
    液晶装置

    公开(公告)号:US06496170B1

    公开(公告)日:2002-12-17

    申请号:US09301575

    申请日:1999-04-29

    IPC分类号: G09G330

    摘要: A liquid crystal apparatus comprises: a liquid crystal device including a liquid crystal having a spontaneous polarization and causing a state change accompanied with a polarity inversion thereof within a response time. Drive means sequentially selects scanning signal lines each in a scanning selection period and applies data signal voltages to the pixels along an associated scanning signal line, wherein the scanning selection period for a scanning signal line is shorter than the response time for the liquid crystal at a pixel on the scanning signal line thus being liable to leave a remaining portion of polarity inversion to reach a desired state change, and the data signal voltage applied to the pixel is set to include a compensation voltage for compensating for a voltage decrease caused by the remaining portion of polarity inversion.

    摘要翻译: 液晶装置包括:液晶装置,其包括具有自发极化的液晶,并且在响应时间内引起伴随其极性反转的状态变化。 驱动装置在扫描选择期间依次选择扫描信号线,并沿着相关联的扫描信号线向像素施加数据信号电压,其中扫描信号线的扫描选择期间比液晶的响应时间短 因此扫描信号线上的像素易于留下极性反转的剩余部分以达到期望的状态变化,并且施加到像素的数据信号电压被设置为包括用于补偿由剩余的电压引起的电压降低的补偿电压 部分极性反转。

    Semiconductor display device having a display portion and a sensor portion

    公开(公告)号:US06424326B1

    公开(公告)日:2002-07-23

    申请号:US09753708

    申请日:2001-01-04

    IPC分类号: G09G330

    摘要: To provide a semiconductor display device capable of displaying an image having clarity and a desired color, even when the speed of deterioration of an EL layer is influenced by its environment. Display pixels and sensor pixels of an EL display each have and EL element, and the sensor pixels each have a light receiving diode or a sensor TFT. The luminance of the EL elements of each in the display pixels is controlled in accordance with the amount of electric current flowing in each of the light receiving diodes or sensor TFTs.

    Active matrix electroluminescent display device
    77.
    发明授权
    Active matrix electroluminescent display device 有权
    有源矩阵电致发光显示装置

    公开(公告)号:US06400348B1

    公开(公告)日:2002-06-04

    申请号:US09584814

    申请日:2000-05-31

    申请人: Nigel D. Young

    发明人: Nigel D. Young

    IPC分类号: G09G330

    摘要: An active matrix electroluminescent display device comprises an array of display pixels 30 arranged in rows and columns with each row of pixels sharing a common line, and with currents through the display elements of a row of pixels passing along the common line. Error values (e) are generated to correct the drive signals (V) for each pixel in a row of pixels, to correct for the different voltages appearing on the common line. These different voltages give rise to horizontal cross talk. The error values (e) are derived by modelling a row of pixels, taking into account the drive signals applied to all pixels of the row. The error values result in updated drive signals (V′).

    摘要翻译: 有源矩阵电致发光显示装置包括排列成行和列的显示像素阵列,每行像素共享公共线,并且具有通过沿着公共线通过的一行像素的显示元件的电流。 产生误差值(e)以校正像素行中的每个像素的驱动信号(V),以校正公共线上出现的不同电压。 这些不同的电压引起水平串扰。 考虑到施加到行的所有像素的驱动信号,通过对像素行进行建模来导出误差值(e)。 错误值导致更新的驱动信号(V')。

    EL display device with dielectric breakdown inhibiting feature
    79.
    发明授权
    EL display device with dielectric breakdown inhibiting feature 有权
    具有绝缘击穿抑制特性的EL显示装置

    公开(公告)号:US06317107B1

    公开(公告)日:2001-11-13

    申请号:US09276498

    申请日:1999-03-25

    IPC分类号: G09G330

    摘要: An EL display in which expansion of dielectric breakdown occurring at any one of EL elements is inhibited. Scan electrodes are arranged to receive an offset voltage Vm at those instances other than during application of a scanning voltage thereto in a positive field, while a predetermined voltage is applied to data electrodes to prevent voltage from being applied to EL elements immediately after application of the scan voltage. Accordingly, even where dielectric breakdown occurs at any one of the EL elements due to application of a light emission driving pulse voltage, it is possible to inhibit current flow between the scan electrodes and the data electrodes to thereby inhibit further subsequent dielectric breakdown.

    摘要翻译: 在EL元件的任何一个处发生电介质击穿的膨胀被抑制的EL显示器。 扫描电极布置成在正电场施加扫描电压之外的那些情况下接收偏移电压Vm,同时将预定电压施加到数据电极,以防止电压施加到EL元件之后立即施加 扫描电压。 因此,即使由于施加发光驱动脉冲电压而在任何一个EL元件处发生电介质击穿,也可以抑制扫描电极和数据电极之间的电流流动从而抑制进一步的继电介质击穿。

    Driving circuit for organic thin film EL elements
    80.
    发明授权
    Driving circuit for organic thin film EL elements 失效
    有机薄膜EL元件的驱动电路

    公开(公告)号:US06310589B1

    公开(公告)日:2001-10-30

    申请号:US09085731

    申请日:1998-05-27

    IPC分类号: G09G330

    摘要: A pulse generator 1 creates a pulse in synchronization with a driving pulse 26. A charging circuit 2 charges EL elements 20 only for a period which is determined by an output from the pulse generator 1. The charging time is determined by resistance of a switching element 3 in its on condition and a junction capacity of the EL elements 20.

    摘要翻译: 脉冲发生器1与驱动脉冲26同步地产生脉冲。充电电路2仅对来自脉冲发生器1的输出所确定的周期充电EL元件20.充电时间由开关元件的电阻 3处于其开启状态和EL元件20的结电容。