Method of manufacturing liquid crystal display panel
AssigneeNEC Corporation
InventorsTetsuroh Asakura, Takeshi Sasaki
Life of this patent
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Abstract
Provided is a method of manufacturing a liquid crystal display panel of high quality without wasting liquid crystal material. In a step for pressing both of transparent glass substrates against each other, liquid crystal spreads and air bubbles are exhausted through notch portions. A sealing material is crushed before the liquid crystal reaches the notch portions, and the notch portions are blocked. Accordingly, a gap between the transparent glass substrates is sealed in a state where the liquid crystal is filled therein. Moreover, at the same time, both of the transparent glass substrates are compressively attached to each other with the sealing material interposed therebetween.
Claims18
A method of manufacturing a liquid crystal display panel in which liquid crystal is held between a pair of panel substrates facing each other, on which an electrode is formed, comprising:
- a step for coating a sealing material on a plane of at least one of said panel substrates, on which the electrode is formed, with a predetermined coating pattern having a notch portion;
- a step for dropping the liquid crystal on said plane of at least one of said panel substrates, on which said electrode is formed, with a predetermined dropping pattern;
- a step for superposing both of said panel substrates upon another while sandwiching said sealing material and said liquid crystal between said both of said panel substrates;
- and
- a step for pressing said both of said panel substrates against each other,
- wherein in said sealing material coating step, a notch width of said notch portion is set to a value so that said notch portion is blocked after said both of said panel substrates are pressed against each other in said substrate pressing step.
A method of manufacturing a liquid crystal display panel in which liquid crystal is held between a pair of panel substrates facing each other, on which an electrode is formed, comprising:
- a step for coating a sealing material on a plane of at least one of said panel substrates, on which said electrode is formed, with a predetermined coating pattern having a notch portion;
- a step for dropping said liquid crystal on said plane of at least one of said panel substrates, on which said electrode is formed, with a predetermined dropping pattern;
- a step for superposing both of said panel substrates upon another while sandwiching said sealing material and said liquid crystal between said both of said panel substrates;
- and
- a step for pressing said both of said panel substrates against each other,
- wherein in said sealing material coating step, said sealing material surrounding a display area and a small non-display area is coated outside said display area used for displaying, which is said plane of said panel substrate where said electrode is formed, so that said small non-display area which continues to said display area is formed and a notch portion is formed on an outer periphery of said small non-display area, and in said substrate pressing step, an air bubble accommodation portion for accommodating residual gas is formed in said small non-display area after said panel substrates are superposed upon another.
Dependencies are inferred from the claim text.