Varnish for photo alignment film and liquid crystal display device
AssigneeJapan Display Inc.
InventorsHidehiro Sonoda, Takenori Hirota, Yasushi Tomioka, Noboru Kunimatsu
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Abstract
According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group.
Claims8
A varnish for a photo alignment film which is provided by imidizing and radiating the varnish applied on a substrate of a lateral electric field type liquid crystal display device with UV light, comprising an organic solvent, a first polyamic acid-based compound, and an imidization promotor for promoting dehydration and cyclization reaction to the first polyamic acid-based compound, the first polyamic acid-based compound being a polyamic acid or a polyamic acid ester,
- wherein
- the imidization promotor has skeleton containing neither a primary amino group nor a secondary amino group,
- the imidization promotor is a pyridine-based compound, a quinoline-based compound, an isoquinoline-based compound, an imidazole-based compound, a benzimidazole-based compound or a tertiary amine, and
- the first polyamic acid-based compound has terminal skeletons containing no primary amino group.
Dependencies are inferred from the claim text.