アクティブマトリクスエレクトロルミネッセンス表示装置及びその製造方法

Japanese Patent JP4700915

B2

Physical barriers (210) are presented between neighbouring pixels (200) on a circuit substrate (100) of an active-matrix electroluminescent display device, particularly with LEDs (25) of organic semiconductor materials. The invention forms these barriers (210) with metal or other electrically-conductive material (240), that is insulated (40) from the LEDs but connected to the circuitry within the substrate (100). This conductive barrier material (240) backs-up or replaces at least a part of the drive supply line (140, 240) to which the LEDs are connected by a drive element T1. This transfers the problem of line resistance and associated voltage drop from within the circuit substrate (100), where it is severely constrained, to the much freer environment of the pixel barriers (210) on the substrate (100) where the conductive barrier material (240) can provide much lower resistance. Very large displays can be made with low voltage drops along this composite drive supply line (140, 240). Furthermore, the structure can be optimised to form a smoothing capacitor (Cs) between this drive supply line (140, 240) with its conductive barrier material (240) and the further supply line (230) of the LED upper electrodes (23) extending on an insulating coating (40) over the top of the conductive barrier material (240).

Hector, Jason Earl
Young, Nigel Dee
Fish, david a
Childs, Mark Jay

JP2003577338A

June 15, 2011

March 19, 2003

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Koninklijke Philips Electronics N.V.

H05B33/22; G09F9/30; G09G3/10; H01L27/00; H01L27/32; H01L29/786; H01L51/50; H05B33/10; H05B33/12; H05B33/14

JP11024604A
JP11339970A
JP10247588A
JP2001148291A
JP2003536115A

WO1998012689A1
WO2001063975A1
WO2001099191A1

Tadahiko Ito
Shinsuke Onuki
Tadashige Ito

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