| 摘要 |
A SHADOW MASK HAS A RECTANGULAR MASK BODY (12) OPPOSED TO THE PHOSPHOR SCREENOF A PANEL, AND A RECTANGULAR MASK FRAME (13) ATTACHED TO A PERIPHERAL PORTION OF THE MASK BODY, AND IS SUPPORTED ON THE PANEL BY THREE MASK HOLDERS (30) SUCH THAT IT CAN MOVE RELATIVE TO THE PANEL. EACH MASK HOLDER HAS A FIXED PORTION (34) FIXED TO THE MASK FRAME, AN ENGAGEMENT PORTION ENGAGED WITH SIDE WALLS OF THE PANEL, AND A SLOPE PORTION (36) CONNECTING THE FIXED PORTION TO THE ENGAGEMENT PORTION WITH A DISTANCE INTERPOSED BETWEEN THEM. THE SLOPE PORTION OF EACH MASK HOLDER HAS A CROSS SECTION SMALLER AT ITS FIXED-PORTION SIDE THAN AT ITS ENGAGEMENT-PORTION SIDE, AND ALSO HAS A RESPONSIVE-NESS TO A DISPLACEMENT IN THE MASK FRAME DUE TO THERMAL EXPANSION THEREOF. THIS RESPONSIVENESS IS HINGER AT THE FIXED-PORTION SIDE THAN AT THE ENGAGEMENT-PORTION SIDE. (FIG. 5)
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