Single pixel tester for field emission displays

Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device

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Details

3151693, 3151692, 345185, 345204, G09G 310

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active

060344792

ABSTRACT:
A single pixel driving circuit generates a time sequence signal necessary to turn on a single pixel at a time in a field emission display device wherein an anode current measuring circuit for measuring the anode current for each single pixel is connected between the high voltage supply line and the field emission display anode. The anode current measuring circuit is synchronized with the display driving circuits such that a computer controls each of the drive and measuring circuits. Moreover, by way of computer control of the driving circuits and a clock generator for synchronizing the drive and measurement circuits, both high speed production mode testing and relatively slow speed engineering mode testing can be conducted. The measured anode current values for each single pixel are thereafter stored as to their value or waveform, as well as the location of the respective pixels.

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patent: 5387844 (1995-02-01), Browning
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patent: 5410218 (1995-04-01), Hush
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patent: 5605483 (1997-02-01), Takeda et al.
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patent: 5748167 (1998-05-01), Watanabe et al.
patent: 5751262 (1998-05-01), Browning et al.
patent: 5940052 (1999-08-01), Xia et al.
Browning, "Field Emission Display Development and Testing", Eighth International Vacuum Microelectronics Conference, Jul. 30-Aug. 3, 1995.

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