Cathode ray tube

Abstract

A cathode ray tube comprising a panel of which an outer surface is substantially flat; a shadow mask installed with a certain interval from an inner surface of the panel, having a plurality of apertures through which electron beams pass, and formed as a pin-cushion shape in which long and short sides of the shadow mask are inwardly concaved; and the mask frame for fixing and supporting the shadow mask, wherein long and short sides of the mask frame are slanted from ends toward centers thereof in order to maintain a predetermined interval with the long and short sides of the shadow mask. According to this, a strength of the shadow mask is increased and an influence of a magnetic field is reduced thus to obtain an optimum quality.

Description

technical field [0001] The present invention relates to cathode ray tubes, and more particularly to cathode ray tubes capable of improved performance by optimizing the shape of the shadow mask and the shadow mask frame. Background technique [0002] A cathode ray tube is a device that converts electrical signals into electron beams and emits the electron beams to a fluorescent screen to generate images. Cathode ray tubes are widely used in conventional technology due to the ability to obtain good display quality at an affordable price. [0003] Now, a cathode ray tube will be explained with reference to the drawings. figure 1 is a schematic diagram illustrating an example of a conventional art cathode ray tube. Such as figure 1 As shown in , the cathode ray tube includes: a panel 201 made of front glass; a funnel-shaped device 202 made of rear glass engaged with the panel 201 for forming a vacuum space; a fluorescent screen 213, which is placed on the panel 201 and used ...

AI Technical Summary

Problems solved by technology

However, in this case, the impact resistance and the anti-squeak characteristic of the shadow mask 208 cannot be fundamentally improved.

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