Device and method for removing contaminant particle from optical disk
AssigneeLG Electronics Inc.
InventorYoung Joo Yee
Life of this patent
Estimating the term…
Abstract
Device and method for removing contaminant particles from an optical disk, the optical disk having an optical disk substrate, a reflective layer on the disk substrate, a first insulating layer on the reflective layer, a recording layer on the first insulating layer for recording/reproducing a data thereon/therefrom, and a second insulating layer on the recording layer, the device including an electrode pattern of a plurality of concentric circles on the optical disk except the recording layer, a third insulating layer on the electrode pattern to expose a region of the electrode pattern, and a number of connection electrodes in contact with the exposed electrode pattern for applying dust collecting voltages to the electrode pattern.
Claims16
A device for removing contaminant particles from an optical disk having an optical disk substrate, a reflective layer on the disk substrate, a first insulating layer on the reflective layer, a recording layer on the first insulating layer for recording/reproducing a data thereon/therefrom, and a second insulating layer on the recording layer, the device comprising:
- an electrode pattern of a plurality of concentric circles on the optical disk except the recording layer;
- a third insulating layer on the electrode pattern to expose a region of the electrode pattern;
- and
- a number of connection electrodes in contact with the exposed electrode pattern for applying dust collecting voltages to the electrode pattern.
A method for removing a contaminant particle from an optical disk, comprising the step of electrically collecting the contaminant particle from a surface of an optical disc in a direction of a hub or an edge of the disc by applying driving voltages to an electrode pattern of the optical disc through connection electrodes, wherein the electrode pattern electrically connected to the connection electrode and dielectrically connected to a recording layer of the disc is concentrically formed on the recording layer.
Dependencies are inferred from the claim text.