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Application filed by Samsung Electron Devices Co LtdfiledCriticalSamsung Electron Devices Co Ltd
Publication of MY105194ApublicationCriticalpatent/MY105194A/en
Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes
(AREA)
Abstract
A SHADOW MASK FRAME FOR PREVENTION OF HALATION IN A COLOR PICTURE TUBE IS DISCLOSED WHICH IS CHARACTERIZED IN THAT A BENT END PORTION (9) IS PROVIDED AROUND THE PERIPHERY OF AN OPENING PORTION OF THE FRAME (4) IN A PREDETERMINED INCLINATION ANGLE (ALPHA) RELATIVE TO THE PLANE OF THE FRAME (4), THE BENDING BEING FORMED TOWARD THE PANEL (1) OF THE PICTURE TUBE. ACCORDING TO THE DEVICE OF THE PRESENT INVENTION, THE INEFFECTIVELY OVERSCANNED ELECTRON BEAMS ARE POSITIVELY REFLECTED AWAY TOWARD THE OPPOSITE SIDE OF THE LUMINESCENT SCREEN (2), WITH THE RESULT THAT NOT ONLY THE HALATION PREVENTION EFFECT BECOMES SUPERIOR, BUT ALSO THERE IS NO DIFFICULTY IN THE MANUFACTURING ASSEMBLING. (FIG. 3)
MYPI90000096A1988-10-251990-01-19Shadow mask frame for prevention of halation
MY105194A
(en)
Shadow masks for color cathode ray tubes with holes arranged at variable array pitches not monotonically reduced, and color cathode ray tubes with this shadow mask