H01J31/12 - CPC Classification Index

ClassID:

205104 ⎘

H01J31/12 - 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 with luminescent screen

Sub-classes:

H01J31/121 » {tubes for oscillography } 0
H01J31/122 » {Direct viewing storage tubes without storage grid } 0
H01J31/123 » {Flat display tubes} 162
H01J31/128 » {provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digitally controlled display tubes } 0
H01J31/14 » Magic-eye or analogous tuning indicators 0
H01J31/15 » with ray or beam selectively directed to luminescent anode segments 7
H01J31/16 » with mask carrying a number of selectively displayable signs, e.g. charactron, numeroscope 1
H01J31/18 » with image written by a ray or beam on a grid-like charge-accumulating screen, and with a ray or beam passing through and influenced by this screen before striking the luminescent screen, e.g. direct-view storage tube 0

Recent Application in this class:

20240395489

SEMI-TRANSPARENT DETECTOR ARRAY FOR UV/NEAR-UV DETECTION

20230139708

Semi-transparent detector array for UV/near-UV detection

20170076693

Display device with better contrast

20150206699

Electron emission device and electron emission display

20150206697

Electron emission device and electron emission display

20150206696

Electron emission device and electron emission display

20150206695

Electron emission source and method for making the same

20150206694

Electron emission device and electron emission display

20150206693

Electron emission source

20150206691

Electron emission device and electron emission display

20100117515

Fluorescent display tube

20080290782

Field emission display having an improved emitter structure

20080007153

Field emission device with two light-permeable sides

20070018560

Image forming apparatus provided with resistive-coated spacers contacting protruding sections of wiring elements

20060211324

Image display device and manufacturing method for image display device

20060202642

Cathode-ray tube display apparatus

20060077626

Flat image display device

20050280348

Structure and method for fabricating multi-directional field-emission display and multi-directional electron emission source

20050116612

Field emission display having an improved emitter structure

20050059311

Flexible display panel method

20050046333

Image display device and manufacturing method for image display device

15829325

Structure for controlling flashover in MEMS devices