Cathode ray tube having a fag with spring holder

• US 6,271,624 B1
• Filed: 09/15/1993
• Issued: 08/07/2001
• Est. Priority Date: 09/17/1992
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kawase, Mitsuhiro, Takayanagi, Kenichiro, Taguchi, Hiromichi
• Primary Examiner(s): Patel, Ashok
• Application Number:
  US08/121,365
• Time in Patent Office: 2,883 Days
• Field of Search: 313/402, 313/403, 313/404, 313/405, 313/406, 313/407, 313/408
• US Class Current: 313/402
• CPC Class Codes: H01J 2229/0711 Spring and plate (clip) type
• CPC Class Codes: H01J 29/073 Mounting arrangements associated with shadow masks

Abstract

A color selecting electrode of a cathode ray tube is prevented from being twisted to thereby suppress an electron beam from a mislanding. A metal thin plate (6) having vertically striped opening portions (6a) is supported by frame members (7a), (7b) under a proper tension. The frame member (7a) welded to the metal thin plate (6) is joined with a supporting member (8) extended in the longitudinal direction and the frame member (7b) welded to the frame member (7a) is joined with a supporting member (9) extended in the direction (Z-axis direction) perpendicular to a plane formed of the frame members (7a, 7b). The supporting member (9) is fixed to substantially a central portion of the frame member (7b).

Claims

1. A cathode ray tube comprising:

a) a planar face plate panel having a plurality of pins;

b) a rectangular frame having four side members;

c) a color selecting electrode mounted on said frame; and

d) four supporting members being engaged with said pins, each supporting member comprising a holder portion and a spring portion;

each supporting member joining a central portion of one of said side members of said frame, at least two opposed spring portions of said supporting members extending away from said frame in a direction perpendicular to the plane of said face plate panel, wherein the distance between the middle point of said side member of said frame and a point where said supporting member is joined with said frame is less than one-sixth of such side frame.

2. A cathode ray tube comprising:

a) a planar plate panel having a plurality of pins;

b) a rectangular frame having four side members;

c) a color selecting electrode mounted on said frame; and

d) four supporting members being engaged with said pins, each supporting member comprising a holder portion and a spring portion, and each supporting member joining with said frame, at least two opposed spring portions of said supporting members extending away from said frame in a direction perpendicular to the plane of said plate panel, wherein said supporting members are provided at the middle point of each of said four sides of said frame.