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A data acquisition and analysis system for voltage versus luminous intensity transfer characteristic measurements in flat panel displays

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1 Author(s)
Laverty, S.J. ; Dept. of Electr. & Electron. Eng., Ulster Univ., Newtownabbey

In this study the time domain transfer function h(t ) of luminescent display panels has been determined for the first time by the cross-correlation technique. The signature of the impulse response is immediately useful as a research tool and has potential application in the control of manufacturing process parameters. A prototype data acquisition and analysis system was designed and constructed. The system was interfaced to a Thorn EMI 9813 photomultiplier. The primary application of the system, in this case, was to measure the forward transfer characteristics of ZnS:Mn,Cu DCEL (DC electroluminescence) pixels. The system employs cross-correlation techniques based on a 1023, PRBS (pseudo random binary sequence) maximal length sequence with a bit rate of 50 kHz. The digitized luminous output is temporarily stored in static RAM. The data is subsequently transferred to a microcomputer where h(t) is derived by a cross-correlation algorithm

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Instrumentation and Measurement, IEEE Transactions on  (Volume:40 ,  Issue: 3 )