Glass substrate molding method

摘要

A glass substrate molding method includes: preparing a rotatable or wheelable molding die having a die surface and contacting the die surface with one of a pair of principal surfaces of a glass substrate made of a glass material containing an alkali metal oxide, the die having conductivity; keeping the one of principal surfaces contacted with the die surface at a temperature over 100° C. and equal to or lower than Tg+50° C.; applying direct-current voltage to the substrate to be higher voltage on the contacted one of principal surfaces than voltage on an opposite surface of the contacted one of principal surfaces; and rotating or wheeling the die and simultaneously moving the die or the substrate in a direction parallel to the contacted one of principal surfaces in conformity with rotation or wheeling speed of the die, to mold the contacted one of principal surfaces of the substrate.

主权项

1. A glass substrate molding method, comprising:
preparing a rotatable or wheelable molding die having a die surface and contacting the die surface with one of a pair of principal surfaces of a glass substrate made of a glass material containing an alkali metal oxide, the molding die having conductivity at least on the die surface; keeping the one of the pair of principal surfaces of the glass substrate contacted with the die surface at a temperature over 100° C. and equal to or lower than Tg+50° C., where Tg indicates a glass transition temperature of the glass material; applying a direct-current voltage to the glass substrate so as to be higher voltage on the contacted one of the pair of principal surfaces than voltage on an opposite surface of the contacted one of the pair of principal surfaces; and rotating or wheeling the molding die and simultaneously moving the molding die or the glass substrate in a direction parallel to the contacted one of the pair of principal surfaces of the glass substrate in conformity with a rotation speed or a wheeling speed of the molding die, to mold the contacted one of the pair of principal surfaces of the glass substrate.