Shadow mask of cathode ray tube and manufacturing method thereof
AssigneeLG Electronics Inc.
InventorsNo Jin Park, Myung Hoon Oh, Sang Mun Kim
Life of this patent
Estimating the term…
Abstract
In a color cathode ray tube, a shadow mask has a shadow mask thin plate that includes Fe—Ni. The shadow mask thin plate has a volume ratio, FR of γ-FIBER to a crystal face having {100}<001> cube orientation between 0.5 and 5.0. The volume ratio, FR, is determined according to equations (1), (2) and (3): FR = f ( g ) γ - FIBER ValueMean f ( g ) { 100 } < 001 > ( 1 ) f ( g ) γ - FIBER ValueMean = f ( g ) { 111 } < 110 > + f ( g ) { 111 } < 112 > + f ( g ) { 111 } < 123 > 3 ( 2 ) f ( g ) { hkl } [ uvw ] = ⅆ V ( g ) { hkl } [ uvw ] / V ⅆ g { hkl } [ uvw ] ( 3 ) wherein g={hkl}[uvw], and V=volume fraction.
Claims2
In a color cathode ray tube, a shadow mask, comprising:
- a shadow mask thin plate including Fe—Ni,
- wherein said shadow mask thin plate has a volume ratio of a γ-FIBER assembling structure component including {111}<110> crystal orientation, {111}<123> crystal orientation and {111}<112> crystal orientation,
- wherein said volume ratio to a crystal face having {100}<001> cube orientation is between 0.5 and 5.0, and
- wherein said volume ratio, FR, is determined according to equations (1), (2) and (3) FR = f ( g ) γ - FIBER ValueMean f ( g ) { 100 } < 001 > ( 1 ) f ( g ) γ - FIBER ValueMean = f ( g ) { 111 } < 110 > + f ( g ) { 111 } < 112 > + f ( g ) { 111 } < 123 > 3 ( 2 ) f ( g ) { hkl } [ uvw ] = ⅆ V ( g ) { hkl } [ uvw ] / V ⅆ g { hkl } [ uvw ] ( 3 )
- wherein g={hkl}[uvw] and V=volume of fraction.
Dependencies are inferred from the claim text.