Patent ID: 9598310
Date: 2017-03-21
CPC Classifications: B08B,B24B,C03C,G01B,H01L

Claim:
1. An apparatus for etching a glass substrate, the apparatus comprising: a vessel configured to contain an etchant; a first plate in the vessel and configured to receive a horizontally placed glass substrate thereon; a circulating unit in the vessel facing the first plate, the circulating unit comprising a sensor on a sidewall of the vessel and adjacent to the first plate and configured to measure a thickness of the glass substrate and generate a signal corresponding to the measured thickness; and a control unit configured to receive the signal corresponding to the measured thickness from the sensor and provide a driving signal to the driving unit, wherein the driving unit is configured to be moved horizontally with respect to the first plate, from one end of the vessel to an opposite end of the vessel, and configured to be vertically moved and horizontally moved with respect to the first plate in response to the driving signal, to adjust an etching rate of the glass substrate.