Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1991-09-26
1993-01-12
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313506, 3151693, H05B 3314, H01L 3300
Patent
active
051793164
ABSTRACT:
An electroluminescent display device including a semiconductor substrate having a phosphor layer on one face thereof, and a space charge removing means in the semiconductor substrate. The space charge removing means continuously removes carriers, typically electrons, from the space charge barrier region formed during device operation, to thereby reduce space charge barrier related brightness limitations. The space charge removing means may comprise a doped region in the semiconductor substrate adjacent the phosphor layer, which is DC biased to continuously remove electrons from the space charge region. Alternatively, the doped region in the substrate adjacent the phosphor layer may inject electrons into the phosphor layer, with space charge removal being accomplished by a DC biased substrate contact. The space charge region in the substrate is reduced or eliminated thereby increasing the maximum number of electrons which can be injected into the electroluminescent layer and increasing the brightness of the display device.
REFERENCES:
patent: 3806759 (1974-04-01), Kabaservice et al.
patent: 4486499 (1984-12-01), Morimoto
patent: 4554485 (1985-11-01), Yamada
patent: 4603280 (1986-07-01), Pankove
patent: 4613793 (1986-09-01), Panicker et al.
patent: 4720432 (1988-01-01), VanSlyke et al.
patent: 4751427 (1988-06-01), Barrow et al.
patent: 5107318 (1992-04-01), Makiuchi et al.
Evaluation Technology of VLSI Reliability Using Hot Carrier Luminescence, Y. Uraoka et al., IEEE Transactions on Semiconductor Manufacturing, vol. 4, No. 3, Aug. 1991, pp. 183-192.
MCNC
O'Shea Sandra L.
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