Patent ID: 6417613
Filing Date: 2002-07-09
Classification: H01J

Abstract:
A glass panel for cathode ray tube comprising:a face portion of substantially rectangular shape; and a skirt portion connected with a periphery of the face portion via a blend R portion and having a seal edge surface for sealing with a funnel, wherein an effective screen diameter D(mm) of the glass panel along a diagonal axis thereof is in the range of 500&lE;D<650; an average radius of curvature of an outer surface of the face portion is more than or equal to 10,000 mm in any radial direction passing the center of the face portion; and a distance h(mm) along a tube axis from a contact between an effective screen end of an inner surface of the glass panel and the blend R portion to the seal edge surface at least in a short axis of the glass panel, and a glass wall thickness t (mm) of the seal edge surface satisfy the relationships of: 0.07D&lE;h&lE;0.11D, 0.015D&lE;t&lE;0.025D and (D/25.4)2&lE;tÃ—h&lE;(D/25.4+3)2.