Asahi Kasei Kabushiki Kaisha

Asahi Kasei E-materials Corporation

Masaharu Sugimura

Takashi Ono

Yasuyuki Kawazu

Masaru Sugiyama

Hirotaka Kakizaki

Shinichiro Tachibana

A glass cloth comprising a glass yarn woven together, the glass yarn comprising multiple glass filaments, wherein an amount of BOin a composition of the glass filaments is 15% by mass to 30% by mass, an amount of SiOin the composition thereof is 45% by mass to 60% by mass, and an amount of POin the composition thereof is 2% by mass to 8% by mass, and loss on ignition (LOI) of the glass cloth is 0.90% by mass to 2.0% by mass.

Glass cloth, prepreg and printed wiring board

A wire grid polarizing plate () has a substrate () having a concavo-convex structure extending in a particular direction on its surface, and a conductive material () provided to be distributed on one side surface () of a convex portion () of the concavo-convex structure. Further, in the wire grid polarizing plate (), in a cross-sectional view in the perpendicular direction to the extension direction of the concavo-convex structure, a pitch Pthat is a distance between two adjacent convex portions () is set at 120 nm or less, and a convex-portion height (H) that is a difference in height between a highest portion () of the convex portion () and a lowest portion () of a concave portion () is set at 0.8 time to 1.3 time the pitch P. With the wire grid polarizing plate () in a liquid crystal display device, high image quality can be achieved.

Wire grid polarizing plate and projection type image display device

Growing community of inventors

Tokyo, Japan

Masaharu Sugimura