Selection system for matrix displays requiring AC drive waveforms
    1.
    发明授权
    Selection system for matrix displays requiring AC drive waveforms 失效
    需要交流驱动波形的矩阵显示器选型系统

    公开(公告)号:US3911421A

    公开(公告)日:1975-10-07

    申请号:US42945973

    申请日:1973-12-28

    Applicant: IBM

    CPC classification number: H04N3/127

    Abstract: Alternating drive waveforms with zero direct voltage content for matrix or multiplexed displays are produced using low voltage, binary-level switching in the selection drive circuitry. Selection drive circuitry, and the breakdown voltage requirements thereof, are minimized by synthesizing the required high voltage waveforms applied to both the X and Y axes of display from lower amplitude components.

    Abstract translation: 在选择驱动电路中使用低电压二进制电平切换产生用于矩阵或多路复用显示器的零直流电压内容的交替驱动波形。 选择驱动电路及其击穿电压要求通过从低振幅分量合成施加到显示器的X和Y轴的所需高电压波形来最小化。

    5.
    发明专利
    未知

    公开(公告)号:DE3751111T2

    公开(公告)日:1995-09-14

    申请号:DE3751111

    申请日:1987-12-01

    Applicant: IBM

    Inventor: ALT PAUL MATTHEW

    Abstract: An array of thin film transistor (TFT) devices is provided with a conductive region, such as a strip, for temporarily coupling a floating pel electrode of each of the plurality of TFT devices to a conductor on an underlying substrate. The conductor may be a row or column metalization line associated with an adjacent row or column of the array. The conductive strip may therefore be utilized, in conjunction with appropriate voltage potentials and test circuitry, to test each of the TFT devices prior to the final fabrication of the TFT array into a completed flat panel display. Thus, nonfunctioning or out of specification arrays may be identified at an early point in the manufacturing cycle of the display. The strip may be comprised of amorphous silicon which is illuminated during the test in order to reduce the intrinsic resistance of the strip. The strip may also be comprised of a layer of metalization, which layer is removed from the array at the completion of the test.

    9.
    发明专利
    未知

    公开(公告)号:DE69714644T2

    公开(公告)日:2003-05-28

    申请号:DE69714644

    申请日:1997-04-22

    Applicant: IBM

    Abstract: A matrix addressed display system designed so as to enable data line (22) repair by electronic mechanisms which is efficient and low in cost and thus increases yield. Such active data line (22) repair utilizes additional data driver (36) outputs, a defect map memory (48) in the TFT/LCD module and modification of the data stream to the data drivers (36) by additional circuits (42) between the display and the display adapter. A bus configuration on the display substrate is utilized which combines repair flexibility, low parasitic capacitance, and the ability to easily make the necessary interconnections. The number of interconnections is kept to a minimum, the connections are reliable, and the connections may be made with conventional wire bond or laser bond technology, or disk bond technology.

    10.
    发明专利
    未知

    公开(公告)号:DE69714644D1

    公开(公告)日:2002-09-19

    申请号:DE69714644

    申请日:1997-04-22

    Applicant: IBM

    Abstract: A matrix addressed display system designed so as to enable data line (22) repair by electronic mechanisms which is efficient and low in cost and thus increases yield. Such active data line (22) repair utilizes additional data driver (36) outputs, a defect map memory (48) in the TFT/LCD module and modification of the data stream to the data drivers (36) by additional circuits (42) between the display and the display adapter. A bus configuration on the display substrate is utilized which combines repair flexibility, low parasitic capacitance, and the ability to easily make the necessary interconnections. The number of interconnections is kept to a minimum, the connections are reliable, and the connections may be made with conventional wire bond or laser bond technology, or disk bond technology.

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