Organic electroluminescent element with uniform display segment

Details Organic electroluminescent element with uniform display segment Organic electroluminescent element with uniform display segment

1997-05-28

1999-04-27

Pascal, Robert

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

345 45, H05B 3326

Patent

active

058982760

ABSTRACT:
The voltage to be applied to fixed display segments are made to be substantially the same to prevent irregular luminance distribution so as to improve display quality. In consideration of allowable voltage drop occurring attributable to the levels of electric currents which flow in electric lines of fixed display segments, the same voltage is applied to the fixed display segments by determining the resistance values by changing the pattern shapes (the lengths, the widths, the thicknesses and the line) of electric lines of the fixed display segments. If the fixed display segments have the same display area, the widths of the electric lines of the fixed display segments are determined to correspond to the ratios of lengths of electric lines of the fixed display segments in order to cause the fixed display segments to be applied with the same voltage.

REFERENCES:
patent: 4985663 (1991-01-01), Nakatani
patent: 5445711 (1995-08-01), Tanski et al.
patent: 5684365 (1997-11-01), Tang et al.

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