Optische Folie, Planare Lichtquellenvorrichtung und Anzeigevorrichtung

Details

Veröffentlichungs-Nr.

EP4729993

Anmeldetag

14. Mai 2024

Veröffentlichung

28. November 2024

Rechtsraum

EP

Abstract

The present disclosure provides an optical sheet comprising a substrate layer, and an optical functional layer stacked on one surface of the substrate layer, wherein the optical sheet has a rectangular shape including a pair of first sides extending in a first direction and a pair of second sides extending in a second direction in a plan view; the optical functional layer includes a plurality of light transmitting portions having a predetermined cross-section and extending in one direction, and a light absorbing portion formed between the adjacent light transmitting portions; the predetermined cross-section of the light transmitting portion is a trapezoid, with a shorter upper base being a light-incident side; when a light transmittance in a third direction perpendicular to the first direction and the second direction is regarded as 100%, a relative transmittance, that is a ratio of a light transmittance in a direction ±30° inclined toward the first direction with respect to the third direction, is 1% or less; and an extending direction of the light transmitting portion has an angle of 5° or more and 20° or less, with respect to the second direction.

Anmelder

Firma

Dai Nippon Printing Co., Ltd.

Land

🇯🇵 Japan