Light-emitting display device with substrate having surface...

Details Light-emitting display device with substrate having surface... Light-emitting display device with substrate having surface...

2005-10-11

2005-10-11

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S500000, C313S505000, C313S506000, C313S292000

Reexamination Certificate

active

06954031

ABSTRACT:
A light-emitting display device includes a substrate and light-emitting layers constituting pixels on a surface of the substrate in which light emission is electrically controlled for every pixel. The light-emitting display device further includes barriers delimiting at least one side of each pixel. On the surface of the substrate, at least part of a region that corresponds to each pixel has irregularities for light scattering. The difference between the maximum height and the minimum height of the irregularities is at least 0.4 μm. The barriers and the irregularities are formed by sandblasting the surface of the substrate. The irregularities reduce attenuation of light by total reflection in the interior of the substrate and improve brightness of the device.

REFERENCES:
patent: 4774435 (1988-09-01), Levinson
patent: 969699 (2000-01-01), None
patent: 61156691 (1986-07-01), None
patent: 01105987 (1989-04-01), None

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