Substrate glass for liquid crystal displays

Details Substrate glass for liquid crystal displays Substrate glass for liquid crystal displays

1987-11-09

1989-04-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 67, C03C 3091, C03C 3093

Patent

active

048248088

ABSTRACT:
Glass compositions suitable for the manufacture of sheet glass for liquid crystal display (LCD) devices are disclosed, such glasses consisting essentially, in cation percent, of about 52-58% SiO.sub.2, 12.5-18% Al.sub.2 O.sub.3, 20-23% B.sub.2 O.sub.3, 0-4% MgO, 0-6% CaO, 0-6% SrO, 1-9% BaO, 8-12% MgO+CaO+Sro+BaO, -3% ZnO, and 0-1% of fining agents. These glasses have a strain point in excess of 625.degree. C., an average linear coefficient of thermal expansion in the range of about 20-60.times.10.sup.-7 /.degree.C. over the range 25.degree.-300.degree. C., an internal liquidus temperature not exceeding about 1050.degree. C., and chemical durability sufficient to exhibit a weight loss in 5% HCl at 95.degree. C. not exceeding about 10 mg/cm.sup.2 in a 24 hour period, and so offer the glass stability necessary for overflow downdraw sheet forming and the high strain point and chemical durability needed for LCD manufacture.

REFERENCES:
patent: 2393449 (1946-01-01), Amistead
patent: 2834738 (1958-05-01), Vincent
patent: 3310413 (1967-03-01), Harrington
patent: 3338696 (1964-05-01), Dockerty
patent: 3978362 (1976-08-01), Dumbaugh et al.
patent: 4302250 (1981-11-01), Danielson
patent: 4394453 (1983-07-01), Dumbaugh
patent: 4409337 (1983-10-01), Dumbaugh
patent: 4634683 (1987-01-01), Dumbaugh
patent: 4666867 (1987-05-01), Beall et al.

Affiliated with

Also associated with

Rating

Substrate glass for liquid crystal displays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Substrate glass for liquid crystal displays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substrate glass for liquid crystal displays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1195757