Unlock instant, AI-driven research and patent intelligence for your innovation.

Cathode ray tube

A technology for cathode ray tubes and shadow masks, which is applied in the manufacture of cathode ray tubes/electron beam tubes, cathode ray/electron beam tube shells/containers, and cold cathodes, and can solve problems such as screen vibration and excellent purity reduction

Inactive Publication Date: 2006-02-15
LG PHILIPS DISPLAY KOREA CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a cathode ray tube using a frame having an existing structure as in frame 6 exhibits excellent purity reduction due to a microphonic phenomenon, and exhibits severe screen vibration due to a resonance phenomenon

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cathode ray tube
  • Cathode ray tube
  • Cathode ray tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Next, a cathode ray tube according to the present invention will be described with reference to the drawings. In the following description, the same elements are referred to by the same names and denoted by the same reference numerals.

[0039] Fig. 2 is a sectional view illustrating a part of a cathode ray tube according to the present invention.

[0040] As shown in FIG. 2, electron beams emitted from an electron gun are vertically and horizontally deflected toward a faceplate 1 of a cathode ray tube by predetermined vertical and horizontal angles by a deflection yoke installed near a funnel neck. The point at which the electron beam deflection starts is called the deflection center n.

[0041] After being deflected at the deflection center n, the electron beams pass through desired slots of the shadow mask 3 and then reach desired portions of the phosphor surface 4 coated on the inner surface of the panel 1 . Portions of the fluorescent surface 4 are illuminated by...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A cathode ray tube including a frame, wherein the frame includes a side wall, to which the shadow mask is welded, and a bottom wall extending from the side wall in a state of being bent inwardly of the frame, and the frame has a side wall height and a bottom wall width defined in a cross section of the frame taken along the longer axis (x), to satisfy a condition ''1.29<=FW_x / FH_x<=1.90'' where ''FW_x'' represents the side wall height in the cross section of the frame taken along the longer axis (x), and ''FH_x'' represents the bottom wall width in the cross section of the frame taken along the longer axis (x). In accordance with this frame structure, it is possible to increase the intrinsic frequency of the frame, and thus, to prevent a degradation in color purity caused by a howling phenomenon.

Description

technical field [0001] The present invention relates to a cathode ray tube, and more particularly, to a cathode ray tube comprising a frame having side walls with an optimal height and a bottom wall with an optimal width to solve problems caused by the microphonic phenomenon. problems, such as reduced color purity of images reproduced by cathode ray tubes. Background technique [0002] A conventional cathode ray tube will be described below with reference to FIG. 1. FIG. [0003] FIG. 1 is a cross-sectional view illustrating the structure of a conventional cathode ray tube. As shown in FIG. 1 , an existing cathode ray tube includes a panel 1 , a funnel 2 , a shadow mask 3 , a fluorescent surface 4 , a deflection coil 5 , a frame 6 , a spring 7 and an inner shield 8 . [0004] The operation of the cathode ray tube having the above-mentioned structure will now be described. The electron beam emitted from the electron gun propagates toward the panel, and is then deflected ve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/02H01J29/07
CPCH01J2229/8626H01J29/861H01J9/142H01J29/07H01J29/073H01J2229/0722H01J2229/862
Inventor 金星勋
Owner LG PHILIPS DISPLAY KOREA CO LTD