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Color cathode ray tube apparatus

A technology of cathode ray tube and main coil, applied in the direction of cathode ray tube/electron beam tube, electrode device and related components, discharge tube, etc. And other issues

Inactive Publication Date: 2005-08-31
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Conventionally, in the case of using a bendless coil in this way to reduce power consumption, it has been difficult to reduce the deformation of the beam spot while maintaining satisfactory focusing characteristics, making it impossible to display an image at a satisfactory level of display quality

Method used

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  • Color cathode ray tube apparatus
  • Color cathode ray tube apparatus
  • Color cathode ray tube apparatus

Examples

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Embodiment Construction

[0040] Best Mode for Carrying Out the Invention

[0041] A color cathode ray tube device according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0042] let as figure 1 As shown, the linear self-converging color cathode ray tube device includes a color cathode ray tube 11 matched with a deflection yoke 12 . The color cathode ray tube 11 has a glass vacuum envelope 10 . The vacuum housing 10 is composed of a substantially rectangular face plate 13 , a cone 14 connected to the face plate 13 , and a cylindrical neck 15 connected to the small diameter portion of the end of the cone 14 . The outer surface of the panel 13 is shaped as a plane having a horizontal axis (H-axis) and a vertical axis (V-axis) passing through the tube axis (Z-axis) and extending at right angles to each other. Equipped on the inner surface of the panel 13 is a fluorescent screen 16 having stripe-shaped three-color fluorescent lay...

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PUM

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Abstract

A cathode ray tube apparatus comprises the deflection yoke including a horizontal deflecting coil for deflecting the electron beams in a horizontal direction. The horizontal deflecting coil has a main coil portion located along the direction of a tube axis, a flange portion located on the phosphor-screen side of the main coil portion, and a bendless flange portion located on the neck side of the main coil portion. The maximum coil thickness of the neck-side flange portion is greater than the maximum coil thickness of the main coil portion near the neck-side flange portion.

Description

technical field [0001] The present invention relates to a color cathode ray tube device for use in a high quality color television or high resolution display, and more particularly to a color cathode improved in focusing characteristics resulting from problems associated with planarization of the screen and its depth reduction X-ray tube device. Background technique [0002] In general, a linear self-converging color cathode ray tube device includes a linear electron gun structure and a deflection yoke. The electron gun structure emits three electron beams, which are arranged in a straight line and include a central beam and a pair of side beams passing through the same horizontal plane. The deflection yoke generates an inhomogeneous deflection magnetic field consisting of a pincushion-shaped horizontal deflection magnetic field and a barrel-shaped vertical deflection magnetic field. [0003] However, the linear self-converging color cathode ray tube device has the followi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/76
CPCH01J29/76H01J2229/7032H01J29/762
Inventor 佐野雄一
Owner KK TOSHIBA