Formed type flat panel for use in a cathode ray tube
AssigneeSamsung Corning Co., Ltd.
InventorsSuck Young Kim, Kyoung Mun Choo
Life of this patent
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Abstract
The present invention provides a formed type flat panel made of tinted glass, which is capable of satisfying the UL standard for implosion resistance thereof. The formed type flat panel of the present invention includes a substantially rectangular faceplate having an substantially flat external surface and a curved inner surface; a skirt portion extending backward from a periphery of the faceplate; a corner portion joining the faceplate and the skirt portion. The faceplate has a specially tailored thickness distribution so at to accomplish aforementioned capability.
Claims8
A formed type flat panel made of tinted glass, comprising:
- a substantially rectangular faceplate including an effective picture plane, an external surface having a radius of curvature of R being equal to or greater than 10,000 mm and a curved inner surface having a radius of curvature R1, R1 being smaller than R;
- a skirt portion extending backward from a periphery of the faceplate;
- a corner portion joining the faceplate and the skirt portion;
- wherein a diagonal length D of the effective picture plane is equal to or greater than 700 mm, or equal to or greater than 550 mm but less than 665 mm, and
- 0.03D−5≦T1≦0.039D+15/(D0.5−1.5)+2.54
- 0.0185D−6.5≦T2≦0.0204D
- 1.3≦T1/T2≦2.1
- wherein
- T1 is a periphery thickness of the faceplate, and
- T2 is a center thickness of the faceplate.
A formed type flat panel made of tinted glass, comprising:
- a substantially rectangular faceplate including an effective picture plane, an external surface having a radius of curvature of R being equal to or greater than 10,000 mm and a curved inner surface having a radius of curvature R1, R1 being smaller than R;
- a skirt portion extending backward from a periphery of the faceplate;
- a corner portion joining the faceplate and the skirt portion;
- wherein a diagonal length D of the effective picture plane is equal to or greater than 665 mm but less than 700 mm, and
- 0.03D−5≦T1≦0.039D+15/(D0.5−1.5)+2.54
- 0.0185D−6.5≦T2≦0.0204D
- 1.3≦T1/T2≦1.97
- wherein
- T1 is a periphery thickness of the faceplate, and
- T2 is a center thickness of the faceplate.
A formed type flat panel made of tinted glass, comprising:
- a substantially rectangular faceplate including an effective picture plane, an external surface having a radius of curvature of R being equal to or greater than 10,000 mm and a curved inner surface having a radius of curvature R1, R1 being smaller than R;
- a skirt portion extending backward from a periphery of the faceplate;
- a corner portion joining the faceplate and the skirt portion;
- wherein an diagonal length D of the effective picture plane is equal to or greater than 500 mm but less than 550 mm, and
- 0.03D−((0.003D)2−2.54)−5≦T1≦0.07D−((0.004D)4−2.54)−1.2
- 0.031D−(0.004D)2≦T2≦0.056D−(0.007D)2−0.254
- 1.3≦T1/T2≦2.1
- wherein
- T1 is a periphery thickness of the faceplate, and
- T2 is a center thickness of the faceplate.
A formed type flat panel made of tinted glass, comprising:
- a substantially rectangular faceplate including an effective picture plane, an external surface having a radius of curvature of R being equal to or greater than 10,000 mm and a curved inner surface having a radius of curvature R1, R1 being smaller than R;
- a skirt portion extending backward from a periphery of the faceplate;
- a corner portion joining the faceplate and the skirt portion;
- wherein a diagonal length D of the effective picture plane is less than 500 mm, and
- 0.035D−((0.003D)2−2.54)−5≦T1≦0.07D−((0.004D)4−2.54)
- 0.031D−(0.004D)2−3.5≦T2≦0.056D−(0.007D)2+1.5
- 1.3≦T1/T2≦2.1
- wherein
- T1 is a periphery thickness of the faceplate, and
- T2 is a center thickness of the faceplate.
Dependencies are inferred from the claim text.