Dai Nippon Printing Co., Ltd.

Kounosuke Tanaka

Toshihiko Takeda

Yozo Kosaka

Katsuhiko Mizuno

Nobuaki Kimura

Sakurako Hatori

Takeshi Nakamura

The invention relates to a transfer sheet suitable for the formation of electrode patterns, dielectric layers, barrier layers, etc. in plasma display panels (PDPs), field emission displays (FEDS), liquid crystal displays (LCDS), fluorescent displays, hybrid integrated circuits, etc. The transfer sheet comprises a base film and a transfer layer releasably provided on the base film, optionally with a protective film provided on the transfer layer. The transfer layer comprises an inorganic component including a glass frit and an organic component removable by firing, optionally with an electrically conductive powder. By specifying the surface roughness and surface gloss of the transfer layer, the releasability of the transfer layer with respect to the base or protective film, and the residual solvent content of the transfer layer, it is possible to form, with high accuracy, primer layers, dielectric layers on front or back panel plates, photosensitive black matrix layers, and photosensitive rib layers for use with PDPs, and form high-definition electrode patterns as well.

Transfer sheet

The invention relates to a transfer sheet suitable for the formation of electrode patterns, dielectric layers, barrier layers, etc. in plasma display panels (PDPs), field emission displays (FEDS), liquid crystal displays (LCDs), fluorescent displays, hybrid integrated circuits, etc. The transfer sheet comprises a base film and a transfer layer releasably provided on the base film, optionally with a protective film provided on the transfer layer. The transfer layer comprises an inorganic component including a glass frit and an organic component removable by firing, optionally with an electrically conductive powder. By specifying the surface roughness and surface gloss of the transfer layer, the releasability of the transfer layer with respect to the base or protective film, and the residual solvent content of the transfer layer, it is possible to form, with high accuracy, primer layers, dielectric layers on front or back panel plates, photosensitive black matrix layers, and photosensitive rib layers for use with PDPS, and form high-definition electrode patterns as well.

A transfer sheet and a pattern-forming method suitable for forming high-precision patterns for layers such as electrode layers, dielectric layers and barrier layers in the process of producing plasma display panels, image display devices, thermal heads, integrated circuits, etc., and capable of forming patterns having superior surface smoothness, a uniform thickness and high profile precision in a reduced period of time and in high yields. The transfer sheet has an ink layer over a base film. The ink layer consists essentially of an inorganic component containing at least a glass frit, and a thermoplastic resin. The ink layer contains from 3 parts to 50 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the inorganic component. According to the pattern-forming method, a pattern is transferred onto a substrate by using the transfer sheet, and then firing is carried out, thereby forming a high-precision pattern, e.g. an electrode layer, a dielectric layer, a barrier layer, etc.

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Tokyo, Japan

Kounosuke Tanaka