Method for realizing non-shadow mask high clear colorful visualization

Abstract

The invention provides a implement method of the non shadow mask high clear colored raster display, it includes: the 1st step, the electron gun produced the electron beam; The 2nd step, electron beams after electrostatic deflection of the deflection coil project on the fluorescence starch noodles in the fluorescent screen inside; the 3rd step, fluorescence powder produces the corresponding color in the fluorescent screen inside to form the color display. The fluorescent screen inside equipped with luminous powder level which has red, green, the blue three primary color as red, green, blue vertical strip, and the periodic gap distribution to form certain strip luminous powder; paints the certain width black strip between each strip luminous powder, the electron gun carries on the sharp focusing to the electron beam and keeps the horizontal diameter of the electron beam not bigger than two times of the black strip width. The invention has abbreviated the shade housing plate on the original technology foundation, realized the high clear demonstration on the foundation of enhancing the product qualified rate and reducing the cost.

Description

technical field [0001] The invention relates to a method for realizing a color picture tube, in particular to a method for realizing a high-definition color display without a shadow mask. Background technique [0002] The color picture tubes on the existing market are all shadow mask picture tubes. The color display is achieved by emitting electron beams through electron guns, passing through the mesh holes on the shadow mask plate, and hitting phosphors showing different colors respectively. The shadow mask is full of small holes to ensure that each electron beam hits only one color of phosphor. Therefore, the shadow mask plays the role of color selection and is an important component of the shadow mask picture tube. During the working process of the picture tube, the shadow mask is always under the bombardment of the electron beam. Since the area of ​​the mesh on the shadow mask is less than 20% of the area of ​​the shadow mask, more than 70% of the electrons hit the shado...

AI Technical Summary

Problems solved by technology

During the working process of the picture tube, the shadow mask is always under the bombardment of the electron beam. Since the area of ​​the mesh on the shadow mask is less than 20% of the area of ​​the shadow mask, more than 70% of the electrons hit the shadow mask. Cause heat generation, deformation and magnetization of the shadow mask, low electron beam utilization rate, lower image brightness and increase energy consumption

Images