H01J31/20 - CPC Classification Index

ClassID:

205117 ⎘

H01J31/20 - CPC Classification

Classification description:

Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored; Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours

Sub-classes:

H01J31/201 » {using a colour-selection electrode} 0
H01J31/208 » {using variable penetration depth of the electron beam in the luminescent layer, e.g. penetrons} 0

Recent Application in this class:

20230020025

2023-01-19

DISPLAY ASSEMBLY FOR AN ELECTRONIC DEVICE THAT INCLUDES A BLUE LIGHT PROTECTIVE TRANSPARENCY

20160172147

2016-06-16

Display device and cooking appliance having the same