Multiple-gun large-screen flate color CRT

A cathode ray and large screen technology, applied in the direction of cathode ray tubes/electron beam tubes, discharge tubes, electrical components, etc., can solve problems such as difficulties in making shadow masks, inability to make larger screens, and excessive weight

Inactive Publication Date: 2003-11-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applicant Liu Luo once proposed a utility model patent in 971221, the patent number is: 97242678.7, and the name is: large-screen cathode ray flat display. There are still some shortcomings in this patent, such as: the front screen is thick, so that it is too heavy ; There is no support, which makes it impossible to further enlarge the screen; and it is difficult to make a shadow mask, because of thermal expansion factors, it is difficult to fix the shadow mask when it is enlarged

Method used

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  • Multiple-gun large-screen flate color CRT
  • Multiple-gun large-screen flate color CRT
  • Multiple-gun large-screen flate color CRT

Examples

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Embodiment Construction

[0010] Such as figure 1 As shown, the large screen of the present invention is formed by arranging and combining a plurality of sub-display parts, and each sub-display part is made up of a display area of ​​the front screen length × width part, plus a single back cone, and each sub-display part has Its own shadow mask, combined with an in-line three-beam electron gun and a color deflection coil, independently forms a color tube corresponding to the size of the specification, and a large number of orderly arranged sub-displays form a large-screen color display. The width and height of the display The ratio can be 4:3, widescreen 16:9 or other ratios. Such as figure 2 , image 3 As shown, a metal support 3 is set in the slot 2 at the bottom of the partition frame 1, and the metal support 3 is filled along the length direction of the slot 2 at the bottom of the partition frame 1. The surface is in good contact after being sealed under the action of gravity, which plays a role...

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Abstract

A flat multigun color cathod ray tube with large screen has metal support in narrow groove at the bottom of the isolation frame. The metal supports fill the groove in the longiduinal direction and is connected one section by one section.

Description

technical field [0001] The invention relates to a color tube, in particular to a multi-gun large-screen flat cathode ray color tube, which belongs to the field of color TV sets. Background technique [0002] The vast majority of household TVs at home and abroad today use cathode ray color tubes, and their specifications range from 14, 18, 21, 25, 29, 34, and 38 inches. There is no 38-inch domestic color TV, but there is no ideal solution for the large-screen color screen (65 inches) required by the imminent digital high-definition television receiver. The size of the traditional cathode ray tube (CRT) color TV has reached the limit of 38 inches. No matter how large the size is, its weight and volume are unacceptable to users. It is extremely difficult or even impossible to carry it into the house. Therefore, it is necessary to seek a large-screen, flat-type, light-weight color screen to meet the requirements of color TVs to further develop into large screens and high-defini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/02
Inventor 刘洛
Owner SHANGHAI JIAO TONG UNIV
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