Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2008-01-29
2008-01-29
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000, C313S506000
Reexamination Certificate
active
07323816
ABSTRACT:
The invention relates to a thick film dielectric electroluminescent display having a patterned layer. The patterned layer is patterned using a laser ablation method including selecting a wavelength of laser radiation, a laser pulse length, a laser energy density and a sufficient number of laser pulses to pattern the layer without substantial ablation of or damage to other layers, whereby the wavelength of laser radiation is such that the laser radiation is substantially absorbed by the layer with minimal absorption by other layers, the laser pulse length is sufficiently short that during the duration of the laser pulse there is minimal heat flow from the layer to other layers, and the laser energy density and the sufficient number of laser pulses is sufficiently high that energy is deposited in layer, whereby at least a portion of the layer is ablated and the luminance of an unablated area of the display is comparable to the luminance of an equivalent area of an unpatterned but otherwise identical display.
REFERENCES:
patent: 5302423 (1994-04-01), Tran et al.
patent: 5432015 (1995-07-01), Wu et al.
patent: 5824374 (1998-10-01), Bradley, Jr. et al.
patent: 6114183 (2000-09-01), Hamada et al.
patent: 6771019 (2004-08-01), Wu et al.
patent: 2002/0063517 (2002-05-01), Hosokawa
patent: 2002/0094451 (2002-07-01), Li et al.
patent: 2003/0087129 (2003-05-01), Miura et al.
patent: 09274989 (1997-10-01), None
patent: WO 98/33359 (1998-07-01), None
patent: WO 00/70917 (2000-11-01), None
Liu et al., P-50: Investigation of Rare-Earth Doped Thiogallates as Potential Phosphors for TDEL Displays,1998 SID International Symposium Digest of Technical Papers, Aneheim, CA, May 1998, V. 29, pp. 648-651.
Hunt Terry
Lovell Dave
Fay Sharpe LLP
Ifire Technology Corp
Williams Joseph
Won Bumsuk
LandOfFree
Thick film dielectric electroluminescent display having... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thick film dielectric electroluminescent display having..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thick film dielectric electroluminescent display having... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2757293