Abuttable light-emitting device modules for graphic display assemblies
CA 1082378 A · Owner: Litton Industries, Inc. · Inventors: Groves, Henry T.; Brown, Thomas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-contained display module of light-emitting diodes (LEDs) is disclosed which has an array of LEDs in a four-edgeabuttable pattern on one surface of a substrate while refresh, memory and row and column driving circuitry for the LEDs are adjacent the opposite surface of the substrate. Visual display assemblies capable of alphanumeric and/or graphic display may conveniently be constructed from a matrix of these modules when, assembled on a common backplane.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.