Mechanism for maintaining pressure of helium in channels of a palc display panel

(19)

(11)

EP 1 059 655 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	21.08.2002 Bulletin 2002/34

(43)	Date of publication A2:
	13.12.2000 Bulletin 2000/50

(21)	Application number: 00303363.6

(22)	Date of filing: 20.04.2000

(51)	International Patent Classification (IPC)⁷: H01J 17/26, H01J 17/48

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

03.05.1999 US 132157 P

(71)	Applicant: Technical Visions, Inc.
	Beaverton, OR 97077 (US)

(72)	Inventors:
	Ilcisin, Kevin J. Beaverton, Oregon 97007 (US) Buzak, Thomas S. Beaverton, Oregon 97007 (US)

(74)	Representative: Burke, Steven David et al
	R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)

(54)	Mechanism for maintaining pressure of helium in channels of a palc display panel

(57) A channel surface of a glass channel substrate for a PALC panel is loaded with helium to a sufficient partial pressure that when the channel substrate is used in a PALC panel with helium as ionizable gas, helium is depleted from the channel at a substantially lower rate than if the channel surface had not been loaded with helium.

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