Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1995-01-18
1996-09-17
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313406, 313407, H01J 2981
Patent
active
055571620
ABSTRACT:
The present invention is directed to a color cathode ray tube comprising an evacuated envelope with a tube axis including a face panel having an inside wall with stud pins, a funnel connected to the panel and a neck extending from the funnel; a shadow mask assembly including a shadow mask facing the face panel, and a mask frame for supporting the shadow mask; a plurality of support members for suspending the shadow mask assembly to the stud pins, each of the support members comprising a first arm portion coupled to the study pin, a second arm portion connected to the mask frame and a folded portion connecting the first and second arm portions with each other; and a control member for controlling a deformation of each the support members, the control member connecting the folded portion to the mask frame, whereby the rotation of the shadow mask assembly caused by a deformation of the support member by an irregular inside wall of the face panel or by a thermal expansion of the shadow mask assembly can be prevented.
REFERENCES:
patent: 3803436 (1974-04-01), Morrell
patent: 4827180 (1989-05-01), Sone et al.
patent: 4916357 (1990-04-01), Nakamura et al.
patent: 5347195 (1994-09-01), Seo
Esserman Matthew J.
O'Shea Sandra L.
Samsung Display Devices Co. Ltd.
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