Patent ID: 6130501
Filing Date: 2000-10-10
Classification: H01J

Abstract:
An arrangement for attaching a shadow mask to a glass envelope of a color cathode ray tube (CRT) having a longitudinal Z-axis, wherein said CRT further includes a display screen disposed on a front portion of said glass envelope and aligned generally perpendicular to said Z-axis and having a plurality of spaced phosphor deposits thereon, said arrangement comprising:a shadow mask having a generally planar, inner portion with plural apertures and a skirt disposed about and attached to said inner portion, wherein plural electron beams are directed onto said shadow mask and through the plural apertures therein causing said shadow mask to undergo thermal deformation;plural retaining structures attached to and disposed in a spaced manner about an inner portion of the CRT's glass envelope; andplural resilient holders attached to the skirt of said shadow mask and disposed about said shadow mask in a spaced manner, wherein heat is transferred to said resilient holders from the shadow mask and thermal deformation occurs in said resilient holders, and wherein each resilient holder is a unitary metallic member and has a longitudinal axis aligned with the Z-axis of the CRT and undergoes thermal deformation along it longitudinal axis so as to urge the shadow mask in a direction parallel to the CRT's Z-axis to maintain alignment of the shadow mask apertures with the phosphor deposits on the CRT's display screen.