Method and structure for minimizing shadowing during photo-curing of sealing material by making shadow-producing pattern transparent
AssigneeInternational Business Machines Corporation
InventorsJames H. Glownia, Shui-Chih Alan Lien, Robert Jacob von Gutfeld
Life of this patent
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Abstract
A structure (and method for forming the structure) includes an electrically conducting pattern on at least one of two substrates to be combined with the other of the two substrates via a seal. The conducting pattern in a region of the seal for attaching the two substrates is at least transmissive to radiation for curing the seal under the pattern to affix the two substrates.
Claims24
A structure, comprising:
- an electrically conducting pattern on at least one of two substrates to be combined with the other of the two substrates via a seal,
- said electrically conducting pattern comprising an array of electrically conducting lines alternating with open spaces, said conducting lines being opaque to optical radiation, each of said conducting lines being open in a specified region and reconnected by a separate deposit overlapping both ends of said electrically conducting lines,
- said deposit comprising optically transparent or partially transparent electrically conducting material that restores electrical continuity of said conducting lines and such that
- said conducting pattern in a region of the seal for attaching the two substrates is at least partially transmissive to radiation required for curing said seal under said pattern to affix said two substrates,
- wherein said array of electrically conducting lines includes metal lines leading from a transistor to a peripheral region of one of said substrates at which said seal is applied, and
- wherein said electrically conducting lines are reconnected by said deposit in a fan-out region.
A liquid crystal display (LCD) panel, comprising:
- first and second substrates coupled together by a seal;
- a liquid crystal material formed between said first and second substrates;
- and
- an electrically conducting pattern formed on at least one of said first and second substrates, said electrically conducting pattern comprising an array of electrically conducting lines alternating with open spaces, said conducting lines being opaque to optical radiation, each of said conducting lines being open in a specified region and reconnected by a separate deposit overlapping both ends of said electrically conducting lines,
- said deposit comprising optically transparent or partially transparent electrically conducting material that restores electrical continuity of.said conducting lines and such that said conducting pattern in a region of said seal comprises a material at least transmissive to radiation for curing said seal under said pattern, in at least the region of the seal, to couple said first and second substrates together,
- wherein said array of electrically conducting lines includes metal lines leading from a transistor to a peripheral region of one of said first and second substrates at which said seal is applied, and
- wherein said electrically conducting lines are reconnected by said deposit in a fan-out region.
A method of forming a liquid crystal display panel, comprising:
- forming an electrically conducting pattern on at least one of first and second substrates to be coupled together;
- forming a liquid crystal material between said first and second substrates;
- coupling together said first and second substrates with a seal;
- curing said seal with radiation,
- wherein said electrically conducting pattern comprises an array of electrically conducting lines alternating with open spaces, said conducting lines being opaque to optical radiation, each of said conducting lines being open in a specified region and reconnected by a separate deposit overlapping both ends of said electrical lines,
- said deposit being at least partially optically transparent electrically conducting material that restores electrical continuity of said conducting lines,
- wherein said array of electrically conducting lines includes metal lines leading from a transistor to a peripheral region of one of said first and second substrates at which said seal is applied, and
- wherein said electrically conducting lines are reconnected by said deposit in a fan-out region.
An electrically conducting pattern on at least one of two substrates to be combined with the other of the two substrates via a seal, said pattern comprises:
- an array of electrically conducting lines alternating with open spaces, each conducting line of said array of electrically conducting lines being opaque to optical radiation and open in a specified region;
- and
- a deposit overlapping both ends of said electrically conducting lines in said specified region to reconnect said each conducting line, said deposit comprising an optically transparent electrically conducting material that restores electrical continuity of said conducting lines and is at least partially transmissive to radiation required for curing said seal to affix said two substrates,
- wherein said array of electrically conducting lines includes metal lines leading from a transistor to a peripheral region of one of said substrates at which said seal is applied, and
- wherein each of said electrically conducting lines open in said specified region comprise fan-out lines in a fan-out region.
Dependencies are inferred from the claim text.