CN1062700C - Cathode ray tube and method for driving same - Google Patents
Cathode ray tube and method for driving same Download PDFInfo
- Publication number
- CN1062700C CN1062700C CN95102911A CN95102911A CN1062700C CN 1062700 C CN1062700 C CN 1062700C CN 95102911 A CN95102911 A CN 95102911A CN 95102911 A CN95102911 A CN 95102911A CN 1062700 C CN1062700 C CN 1062700C
- Authority
- CN
- China
- Prior art keywords
- electron gun
- electron
- crt
- ray tube
- cathode ray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000010894 electron beam technology Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 210000001367 artery Anatomy 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 8
- 230000002950 deficient Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 101100385296 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CRT10 gene Proteins 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 101100112083 Arabidopsis thaliana CRT1 gene Proteins 0.000 description 3
- 101100238301 Arabidopsis thaliana MORC1 gene Proteins 0.000 description 3
- 101100519629 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PEX2 gene Proteins 0.000 description 3
- 101100468521 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RFX1 gene Proteins 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 239000012671 ceramic insulating material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012771 pancakes Nutrition 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
- G09G1/04—Deflection circuits ; Constructional details not otherwise provided for
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
- G09G1/002—Intensity circuits
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
To perform effective brightness control by a CRT having an FEC in an electron gun. A CRT 10 has an electron gun 12 having a field emission cathode(FEC), a deflection electrode 4 and a brightness control circuit 30 to control these. Analog gradation data is converted into digital data by an A/D converting part 31, and is inputted to an image memory 32. A CRT controller 33 scans the deflection electrode 4 by a deflection electrode control signal, and gives an address designating signal changing in synchronism with the deflection electrode control signal to the image memory 32, and outputs a gradation clock signal to a pulse width modulating circuit 34. Gradation data in the address-designated image memory 32 is inputted to the pulse width modulating circuit 34, and becomes a pulse width-modulated image signal, and is given to a gate of the electron gun in synchronism with the deflection electrode control signal. Electron emitting time in the FEC of the electron gun 12 is controlled with every picture element being scanned of a panel part, and brightness is adjusted.High gradation brightness control immune a noise and excellent in linearity can be performed.
Description
The present invention relates to cathode ray tube (hereinafter referred to as " CRT ") and driving method thereof, the CRT and the driving method thereof of the electron gun that comprises the field-transmitting cathode that is used as electron source particularly is set.
The general structure of common CRT as shown in Figure 8.Particularly, the CRT of numeral 1 indicated general design comprises that inside is provided with the neck part 3 of electron gun 2 among Fig. 8, inside is provided for deflection by the funnel shaped part 5 of the deflecting electrode 4 of neck part 3 electrons emitted bundles be deposited with on it with electron beam excitation and the screen assembly 6 of luminescent fluorescent powder.
The typical structure of the electron gun 2 that comprises among the CRT1 of above-mentioned general design as shown in Figure 9.Electron gun 2 comprises a cathodes heated indirectly by an el 7, and the oxide layer of cathodes heated indirectly by an el 7 is by hot device heating, an extraction electrode 8 and a focusing electrode 9.
In the CRT1 of above-mentioned formation, the electron gun 2 electrons emitted bundles of neck part 3 are focused on by focusing electrode 9, and the directed deflecting electrode that pass through funnel shaped part 54, arrive the precalculated position of fluorescent screen part 6, fluorescent material are encouraged and luminous.
But the described here common CRT with electron gun has following defective.
A defective is that because the negative electrode of electron gun is an indirectly heated cathode, therefore, electron gun need provide electrical power to add hot heater.
Another defective of common CRT is that after the heater energized, needing after a while, electron gun could produce electron beam.
CRT also has a defective to be, because the lost of life of the heater of electron gun can not increase the life-span of CRT.
Common CRT also has a defective to be, the electron beam that its electron source can not emission have increased.
Common CRT also exists a defective to be, constitutes several millimeters big diameter because electron gun produces the part of electronics, thereby requires with electron lens at preset range inner focusing electron beam.Yet this focusing can cause the beam shapes distortion, and the electron density in beam diameter is tending towards inhomogeneous.
For overcoming above-mentioned defective, suggestion constitutes CRT with the electron emission part of field-transmitting cathode (hereinafter referred to as " FEC ") as electron gun.In the time of CRT that exploitation is advised, should utilize the miniaturization of FEC, and not have the current density that any heater and having has increased.
Compare with common thermionic cathode, among the FEC, the relation between drive signal and the electronics emission presents non-linear, and therefore, the included here CRT with FEC can cause and be difficult to control brightness in fact.
Japanese Patent Application Publication discloses a kind of another kind of common CRT with FEC for No. 272638/1992, and it has the many groups of FEC element groups that dual relationships is arranged each other, and driven quantity is also different in different mutually combinations, has produced different brightness thus.Regrettably, a plurality of FEC are divided into a lot of groups according to the gray scale number, and this just causes production cost to increase, and requiring has very big difficulty in subfractionation control brightness, comes down to impossible in other words.
For overcoming above-mentioned defective of the prior art the present invention has been proposed.
Therefore, the objective of the invention is, a kind of cathode ray tube is provided, uses FEC as electronics generation part, it can control brightness and simple in structure effectively.
Another object of the present invention is that a kind of method that drives this cathode ray tube is provided.
According to an aspect of the present invention, a kind of cathode ray tube is provided, comprises: electron gun comprises a plurality of field-transmitting cathodes, each field-transmitting cathode comprises a plurality of emitters and a grid and is used as electron source: electron beam deflecting electrode is used for deflection from described electron gun electrons emitted bundle; And screen portions, being deposited with fluorescent material on it, described fluorescent material is luminous because electron beam clashes on it, it is characterized in that,
Described cathode ray tube is provided with brightness controlling device, and described brightness controlling device comprises: video memory wherein stores image darkness grade data; And pulse width modulation circuit, the control signal that is used for pulse width modulating signal that the described image darkness grade data according to described video memory are produced and the described deflecting electrode described grid of each described field-transmitting cathode of synchronously feeding.
According to another aspect of the present invention, provide a kind of method that drives cathode ray tube, described cathode ray tube comprises: electron gun, comprise a plurality of field-transmitting cathodes, and each field-transmitting cathode comprises a plurality of emitters and a grid and is used as electron source; Electron beam deflecting electrode is used for deflection from described electron gun electrons emitted bundle; And screen portions, being deposited with fluorescent material on it, described fluorescent material is luminous because electron beam clashes on it, it is characterized in that,
The brightness of the described cathode ray tube of following control: synchronously the feed described grid of each described field-transmitting cathode of the pulse width modulating signal that will produce according to the image darkness grade data of storing in the video memory and the control signal of described deflecting electrode.
In the present invention of said structure, pulse width modulation circuit is provided with brightness controlling device, it produces pulse width modulating signal according to the image darkness grade data of storage device, and the control signal of it and deflecting electrode synchronously is fed to the grid of each FEC.The time cycle of controlling and driving field-transmitting cathode,, regulate its brightness thus to scan each pixel.
The image darkness grade control circuit that is provided with brightness controlling device produces the electric pressure control signal according to the image darkness grade data of the image darkness grade control circuit of storage device, and the control signal of it and deflecting electrode synchronously is fed to the grid of each field-transmitting cathode.
The following detailed description of being done in conjunction with the drawings, these purposes of the present invention and other purposes will realize easily that the of the present invention many advantages that thereupon show are had better understanding similarly, identical part is used same numeral in the accompanying drawings.
Fig. 1 is the cutaway view of the electron gun among first embodiment of cathode ray tube of the present invention;
Fig. 2 is the partial enlarged drawing of the electron gun major part among Fig. 1;
Fig. 3 is the block diagram of intednsity circuit among first embodiment of cathode ray tube of the present invention;
Fig. 4 is the time plot of the driving time of intednsity circuit shown in Figure 3;
Fig. 5 is the block diagram by intednsity circuit among second embodiment of cathode ray tube of the present invention;
Fig. 6 is the time plot of the driving time of intednsity circuit shown in Figure 5;
Fig. 7 is by the gate voltage of FEC and the graph of relation between the emission current among second embodiment of CRT of the present invention;
Fig. 8 is the general cutaway view of common CRT;
Fig. 9 is the cutaway view of ordinary electronic rifle.
Describe CRT of the present invention in detail below in conjunction with accompanying drawing.
At first, referring to Fig. 1 to 4, they show an embodiment by CRT of the present invention.
The general construction of the CRT of the embodiment of numeral 10 indications is identical with the structure of above-mentioned common CRT1 of digital 1 indication among Fig. 8 basically.Particularly, the CRT10 in the illustrative examples comprises the glass bulb 11 that is provided with neck part 11a, at this electron gun 12 is installed.Then, electron beam is struck be installed on the fluorescent material of the screen assembly on glass bulb 11 front inner surface, make fluorescent material excitation and luminous, finished required image thus to show, among the CRT10 of illustrative examples, electron gun 12 itself is to constitute with the different modes with common CRT.Electron gun 12 comprises FEC20, and it is as electron source and second beam-focusing electrode 25 and 26.
Now describe the structure of electron gun 12 below in detail.
Electron gun 12 comprises ceramic substrate 13, and the substrate of being made by the insulating material of for example glass and so on 14 is arranged on it.Substrate 14 is provided with the elongated shape FEC20 of a plurality of diameter ranges in 0.5 to 0.6mm.Particularly on substrate 14, form the cathode conductor 15 of conductive film, then, on cathode conductor 15, form insulating barrier 16 and grid 17, repeatedly put in order.Make insulating barrier 16 and 17 usefulness photoetching processes form a plurality of both general through holes 18.Then, in each through hole 18, taper emitter 19 is set with vacuum deposition, and is arranged on the cathode conductor 15.
In illustrative examples, emitter 19 is Spindt types.Can replace Spindt emitter with the vertical shape field emitter that etching method forms with sedimentation formation.And, as long as it has good directivity, also can use pancake field emitter easily.
Therefore, the cathode conductor 15 of each FEC20 that is constituted is connected to the cathode column 21 that is arranged on the substrate 13.Cathode column 21 is outwards drawn the neck 11a of glass bulb 11.
Make core of grid 17 connections of FEC20 form porose plate shape conductor 22.End of a stake in two stakes 23 of the projection with passing ceramic substrate 13 of the end in the two ends of conductor 22 is connected, one side the linking to each other of the other end of conductor 22 and FEC20.The protruding neck part 11a that passes glass bulb 11 of the other end of at least one stake 23.
CRT10 in the illustrative examples comprises that the voltage with pre-sizing is added to the circuit on each electrode of electron gun 12.In the illustrative examples, emitter 19 ground connection, grid 17 is added with 30 to 150 volts voltage, and first beam-focusing electrode 25 is added with 0 to 150 volt voltage, and second beam-focusing electrode 28 is added with 200 to 500 volts voltage.
On the other hand, illustrative examples can also be added to above-mentioned voltage on each electrode, and grid keeps ground connection.Electron gun 12 as mentioned above, comprises FEC20 and first and second beam-focusing electrode 25 and 28.It can also comprise third and fourth beam-focusing electrode if desired.
And the CRT10 of illustrative examples as shown in Figure 3, also comprises the intednsity circuit 30 as brightness controlling device, and in the illustrative examples, image darkness grade data to be shown are provided with the analogue data form.Intednsity circuit 30 comprises and converts analogue data to A/D conversion portion 31 that digital data exports then and as the video memory 32 of storage device.And digital data is input to memory 32.Video memory 32 is stored by the image darkness grade data after A/D converter 31 digitlizations, and according to the external command dateout.
Being input to pulse width modulation circuit 34 by the level data in the video memory 32 of CRT controller 33 addressings.Therefore, calculate the level data that inputs to pulse width modulation circuit 34 on above-mentioned grade clock signal basis, therefore, pulse width modulation circuit 34 produces the modulated picture signal of pulse duration, output signal subsequently.Suppose that picture signal is expressed as the n level in the grade among Fig. 4, corresponding to the picture signal of a pixel of deflecting electrode control signal is that pulse combined by the 1/n in modulation period constitutes, and picture signal and the deflection electronic control signal that is fed to the deflecting electrode of CRT10 are presented the grid 17 to electron gun 12 synchronously.
Give the grid 17 feed-in picture signals in the electron gun 12, control is used to scan time cycle of institute's electrons emitted of each pixel of screen assembly, regulates the brightness of pixel thus.This structure of illustrative examples allows control to be used to scan the electronics launch time of each pixel, and this must not finish in the common electron gun of making electron source with filament.
The level data of supposing storage in the video memory 32 is 8 a binary data, allows to be expressed as 256 grades of level data of 0 to 255 grade in the illustrative examples.And illustrative examples adopts the pulse width modulation based on digital data, has realized high level brilliance control thus, and its antimierophonic ability has improved and had a gratifying linearity.
Referring now to Fig. 5,, another embodiment of CRT of the present invention is described.Illustrative examples CRT comprises the intednsity circuit 30 as brightness controlling device, as shown in Figure 5.In the illustrative examples, the level data of image to be shown is with the feed-in of analogue data form.Then, convert analogue data to digital data, subsequently, be defeated by video memory 32 as storage device with A/D conversion portion (not shown).Therefore, deposit digitized visual level data in the video memory in, and export according to external command.
By the digital level data in the video memory 32 of CRT controller 33 addressing, as shown in Figure 5, be input to then in the D/A change-over circuit 134 as the grade control circuit.D/A change-over circuit 134 is equivalent to the grade control signal of the voltage of digital level data with the output of picture intelligence form.Picture intelligence is a this analog signal form shown in Figure 6.The deflecting electrode control signal of picture intelligence and feed-in deflecting electrode 4 is the grid 17 of feed-in electron gun 12 synchronously.
Grid 17 feed-ins in the electron gun 12 picture intelligence, control is used to scan the electron emission current or the electron emission amount of fluoroscopic each pixel, regulates the brightness of pixel thus.This structure of illustrative examples, the electron emission amount that allows each picture element scan of control to use, this is with ordinary electronic rifle absolutely not finish of filament as electron source.
With the linear zone in gate electrode shown in Fig. 7 and the emission current characteristic, the picture intelligence (grade control signal) by above-mentioned analogue data form is realized the control to the emission current of each FEC emission.For example, when the gate voltage scope A in stipulating Fig. 7 is control range, can make the voltage swing of picture intelligence and FEC amount of electrons emitted each other in direct ratio.The picture intelligence voltage of grid of feeding is reduced to and equals threshold voltage (V
TH) or CRT is ended when comprising the more low-voltage of OV.
As what see from described, CRT of the present invention is with the electron source of FEC as electron gun, and the control signal of the picture intelligence that uses pulse width modulation and the deflecting electrode of the feeding grid of each FEC of feed-in synchronously, controls the brightness of CRT thus.This structure of the present invention has effectively realized the brilliance control of any desirable grade progression, and it can increase noise resisting ability and have the gratifying linearity, and has simplified the structure of CRT.Therefore, should be noted that the present invention has made things convenient for the use of FEC in the electron gun that CRT uses widely, and improved the functional of CRT thus.
And, among the CRT of the present invention, depend on synchronously the feed grid of each FEC of the analog signal of voltage of level data and deflecting electrode control signal, control thus by its electrons emitted emission measure, the result has controlled the brightness of CRT.Therefore, the use of FEC in the electron gun that CRT uses that the present invention is more convenient.
And, make the electron beam that electrostatic lens formation that electron source among the CRT of the present invention only allowed with a designs simplification has uniform electronic density with FEC, and by the control between grid and the emitter having been realized control to the electron beam emission, thereby electron gun can not need any additional control electrode and make its designs simplification.
With reference to the accompanying drawings the preferred embodiments of the present invention have been done detailed description to a certain degree, have various remodeling and variation apparently according to above-mentioned instruction, these remodeling and variation all should be considered as in the application's claim scope, and validity of the present invention need not to specify.
Claims (2)
1, a kind of cathode ray tube comprises: electron gun, comprise a plurality of field-transmitting cathodes, and each field-transmitting cathode comprises a plurality of emitters and a grid and is used as electron source; Electron beam deflecting electrode is used for deflection from described electron gun electrons emitted bundle; And screen portions, being deposited with fluorescent material on it, described fluorescent material is luminous because electron beam clashes on it, it is characterized in that,
Described cathode ray tube is provided with brightness controlling device, and described brightness controlling device comprises: video memory wherein stores image darkness grade data; And pulse width modulation circuit, the control signal that is used for pulse width modulating signal that the described image darkness grade data according to described video memory are produced and the described deflecting electrode described grid of each described field-transmitting cathode of synchronously feeding.
2, a kind of method that drives cathode ray tube, described cathode ray tube comprises: electron gun, comprise a plurality of field-transmitting cathodes, each field-transmitting cathode comprises a plurality of emitters and a grid and is used as electron source; Electron beam deflecting electrode is used for deflection from described electron gun electrons emitted bundle; And screen portions, being deposited with fluorescent material on it, described fluorescent material is luminous because electron beam clashes on it, it is characterized in that,
The brightness of the described cathode ray tube of following control: the control signal of bandwidth modulation signals and the described deflecting electrode described grid of each described field-transmitting cathode of synchronously feeding in the arteries and veins that will produce according to the image darkness grade data of storing in the video memory.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP013418/94 | 1994-02-07 | ||
| JP013418/1994 | 1994-02-07 | ||
| JP6013417A JP2776235B2 (en) | 1994-02-07 | 1994-02-07 | Cathode ray tube and driving method of cathode ray tube |
| JP013417/94 | 1994-02-07 | ||
| JP013417/1994 | 1994-02-07 | ||
| JP6013418A JP2776236B2 (en) | 1994-02-07 | 1994-02-07 | Cathode ray tube and driving method of cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1113030A CN1113030A (en) | 1995-12-06 |
| CN1062700C true CN1062700C (en) | 2001-02-28 |
Family
ID=26349220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102911A Expired - Fee Related CN1062700C (en) | 1994-02-07 | 1995-02-07 | Cathode ray tube and method for driving same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100285941B1 (en) |
| CN (1) | CN1062700C (en) |
| TW (1) | TW256925B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2982719B2 (en) | 1996-11-11 | 1999-11-29 | 日本電気株式会社 | Image output control method of image display device and image display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068579A (en) * | 1989-05-19 | 1991-11-26 | Matsushita Electric Industrial Co., Ltd. | Flat configuration color crt display apparatus with scanning correction for component positioning error |
| US5103144A (en) * | 1990-10-01 | 1992-04-07 | Raytheon Company | Brightness control for flat panel display |
| JPH05343000A (en) * | 1992-06-05 | 1993-12-24 | Futaba Corp | Electron gun and cathode-ray tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103145A (en) * | 1990-09-05 | 1992-04-07 | Raytheon Company | Luminance control for cathode-ray tube having field emission cathode |
-
1995
- 1995-01-26 TW TW084100684A patent/TW256925B/zh active
- 1995-02-03 KR KR1019950001914A patent/KR100285941B1/en not_active IP Right Cessation
- 1995-02-07 CN CN95102911A patent/CN1062700C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068579A (en) * | 1989-05-19 | 1991-11-26 | Matsushita Electric Industrial Co., Ltd. | Flat configuration color crt display apparatus with scanning correction for component positioning error |
| US5103144A (en) * | 1990-10-01 | 1992-04-07 | Raytheon Company | Brightness control for flat panel display |
| JPH05343000A (en) * | 1992-06-05 | 1993-12-24 | Futaba Corp | Electron gun and cathode-ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950034380A (en) | 1995-12-28 |
| TW256925B (en) | 1995-09-11 |
| CN1113030A (en) | 1995-12-06 |
| KR100285941B1 (en) | 2001-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1104020C (en) | Cathode body, electron gun, and cathode ray tube employing ferroelectric emitter | |
| US20010043172A1 (en) | Field emission display | |
| CN1932932A (en) | Electron emission display device and method of driving the same | |
| GB2403089A (en) | More uniform luminance correction | |
| CN1062700C (en) | Cathode ray tube and method for driving same | |
| CN1071488C (en) | Electron beam-generating apparatus, image-forming apparatus, and driving methods thereof | |
| KR0184536B1 (en) | Crt electron gun with luminance controlled by a minimum spot diameter aggregate of field emission cathodes | |
| CN1298011C (en) | Electron emission device | |
| CN1174462C (en) | Cathode and its manufacture method, and kinescope using the cathode | |
| JPH0693162B2 (en) | Image display device | |
| JP2776236B2 (en) | Cathode ray tube and driving method of cathode ray tube | |
| JP2776235B2 (en) | Cathode ray tube and driving method of cathode ray tube | |
| JP2778448B2 (en) | Driving method of electron gun and cathode ray tube | |
| CN1021675C (en) | Colour picture tube means | |
| US20060267518A1 (en) | Electron emission display device and method of controlling brightness thereof | |
| CN1219748A (en) | Electron gun for cathode ray tube | |
| CN1863270A (en) | Procede de controle de la vitesse de balayage d'un faisceau electronique dans un tube cathodique et dispositif de controle correspondant | |
| CN1163473A (en) | Electronic gun for colour cathode ray tube | |
| CN1211810A (en) | Cathode ray tube for realizing high-brghtness picture images | |
| CN1145688A (en) | Method and device of matrix display | |
| CN1110835C (en) | Capacitor-stored field-assisted thermal electron-emitting panel display and its drive method | |
| CN1206695C (en) | Electdronic gun of colour cathode-ray tube | |
| US5144198A (en) | Electron feeder for flat-type luminous device | |
| CN1348600A (en) | Colour display device | |
| JPH07245065A (en) | Electron gun, and cathode-ray tube and its driving method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |