Nippon Sheet Glass Company, Limited

Naoki Kinugasa

Akio Takigawa

Yuichi Yano

Masahiro Ikadai

Hirohiko Iwase

A glass substrate for a reflective mirror of a rear projection television (RPTV) which ensures display quality by quantitative control, and can reduce control cost and manufacture cost is provided. A reflective mirrorof the rear projection television (RPTV) includes a float glass plate (glass substrate)formed to have a plate thickness of 3 mm by a float process, and a reflection enhancing filmconstituted of aluminum (Al) formed on one surfaceof the glass substrateby a sputtering method. In the measurement condition of a cut-off value of 0.8 to 8 mm, the maximum amplitude of a filtered waviness curve is 0.1 &#x3bc;m or less, the maximum value of a viewability index value &#x3b3; (=A/D) in a range of spatial frequencies 2 to 500/mm by spectral analysis of the filtered waviness curve is 0.02 (/m) or less, and an integral value of the viewability index value &#x3b3; is 2.0 (/m) or less.

Glass substrate for reflective mirror, reflective mirror including the glass substrate, glass substrate for liquid crystal panel, and liquid crystal panel including the glass substrate

Disclosed is a liquid crystal device comprising a pair of transparent substrates, transparent conductive films respectively disposed on the inner surfaces of the transparent substrates, and containment means containing a liquid crystal material in gaps interposed between the transparent conductive films, wherein an average refractive index (n.sub.a) of the liquid crystal material, a refractive index (n.sub.b) of the containment means, a total surface quantity (S) [.mu.m.sup.-1 ] of the gaps, and a distance (t) [.mu.m] between the transparent conductive films satisfy the following equation,

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Tokyo, Japan

Naoki Kinugasa