| 摘要 |
PROBLEM TO BE SOLVED: To stabilize the polishing quantity in a stage difference part of a PDP to be generated due to unevenness of cutting accuracy and attaching accuracy of glass boards. SOLUTION: The PDP 6 having a stage difference part between a front board 1 and a rear board 2 formed into a different size and attached to each other is set in a polishing part, and one end surface of the peripheral edge of the PDP 6 is made to abut on two reference pins 3 for positioning, and an end surface polishing grinding wheel 5 and a stage difference part polishing grinding wheel 4 are fed along the positioned one end surface, and edge polishing is performed to the end surface 8 and the stage difference part 7 at the same time, and the four sides are polished in order. In this PDP end surface polishing method, before setting the PDP in the polishing part, each stage difference part width is previously measured by a measurer 10 in a throw-in part at two positions, and a mean value of the two positions is taken into an amplifier 11 as a reference value when feeding the stage difference part of each side, and a start position of the stage difference part polishing grinding wheel 4 per each side of the polishing part is decided on the basis of the reference value. COPYRIGHT: (C)2003,JPO
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