Apparatus for fabricating flat panel display, and apparatus and method for detecting quantity of static electricity thereof
View Patent ↗A fabricating apparatus of a flat panel display device includes lift pins for lifting a substrate, a susceptor through which the lift pins pass, and a static electricity quantity detector for detecting a quantity of static electricity on the substrate by sensing when the susceptor separates from the substrate by sensing a traveled distance of the susceptor when the susceptor is separated from the substrate.
1. A fabricating apparatus of a flat panel display device, comprising:
lift pins for lifting a substrate;
a susceptor through which the lift pins pass;
a light emitter for transmitting light to a space between the susceptor and the substrate during descent of the susceptor;
a light receiver for receiving the transmitted light;
a traveled-distance sensing part for sensing the traveled distance of the susceptor;
a controller for automatically determining whether the substrate is separated from the susceptor by use of a sensed traveled-distance value from the traveled-distance sensing part and a detected light amount from the light receiver, storing the sensed traveled-distance value when a detected light amount is greater than a pre-set reference light amount value, and determining a quantity of static electricity charge by linking one pre-set static electricity charge value corresponding to the stored sensed traveled-distance in a lookup table in a memory; and
a display part for displaying the quantity of static electricity charge determined by the controller, for determining an application time of a radio frequency (RF) power to counter the static electricity charge.
2. The fabricating apparatus according to claim 1 , wherein the lift pins are deployed to lift a substrate as the susceptor descends.
3. An apparatus fabricating a flat panel display device, comprising:
a light emitter for transmitting light through a space between the susceptor and a substrate during descent of the susceptor;
a light receiver for receiving the transmitted light;
a traveled-distance sensing part for sensing a traveled distance of the susceptor;
a controller for automatically determining whether the substrate is separated from the susceptor by use of a sensed traveled-distance value and a detected light amount from the light receiver, storing the sensed traveled-distance value when a detected light amount is greater than a pre-set reference light amount value, and determining a quantity of static electricity charge by linking one pre-set static electricity charge value corresponding to the stored sensed traveled-distance in a lookup table in a memory; and
a display part for displaying the quantity of static electricity charge detected by the controller, for determining an application time of a radio frequency (RF) power to counter the static electricity charge.
4. The apparatus according to claim 3 , wherein the traveled distance is the traveled distance of the susceptor.
5. A fabricating apparatus of a flat panel display device, comprising:
lift pins for lifting a substrate, the lift pins being able to ascend and descend;
a susceptor through which the lift pins pass;
a light emitter for transmitting light to a space between the susceptor and the substrate during ascent of the lift pins;
a light receiver for receiving the transmitted light;
a traveled-distance sensing part for sensing the traveled distance of the lift pins;
a controller for automatically determining whether the substrate is separated from the susceptor by use of a sensed traveled-distance value and a detected light amount from the light receiver part, storing the sensed traveled-distance value when a detected light amount is greater than a pre-set reference light amount value, and determining a quantity of static electricity charge by linking one pre-set static electricity charge value corresponding to the stored sensed traveled-distance in a lookup table in a memory; and
a display part for displaying the quantity of the static electricity determined by the controller, for determining an application time of a radio frequency (RF) power to counter the static electricity charge.