CN1053320A - Thin-type image display device - Google Patents
Thin-type image display device Download PDFInfo
- Publication number
- CN1053320A CN1053320A CN91100134A CN91100134A CN1053320A CN 1053320 A CN1053320 A CN 1053320A CN 91100134 A CN91100134 A CN 91100134A CN 91100134 A CN91100134 A CN 91100134A CN 1053320 A CN1053320 A CN 1053320A
- Authority
- CN
- China
- Prior art keywords
- electron
- wall
- display
- electronics
- screen
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/124—Flat display tubes using electron beam scanning
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
The vacuum envelope of image diplay has within it that side supports fluoroscopic antetheca and apart from its nearer rear wall, front and rear wall is connected by sidewall.The juxtaposed localized electron passage that this shell holds the electron source of a plurality of vicinities and matches with it, this electron channel have to have and are suitable for the wall of electron flow form by the basic electrical insulating material of the secondary emissionratio of the vacuum transmission electronics that produced.The device that each electron stream is transmitted along the specific wall of its electron channel substantially is provided, and each electron stream has been taken out and guided into phosphor screen to produce the device of the image of being made up of pixel in the precalculated position from passage.
Description
The present invention relates to a kind of vacuum envelope that has, be used to show the image diplay of the image of forming by pixel on the phosphor screen, more particularly, relate to a kind of thin image diplay (image diplay that promptly has little " size from front to back "), it and existing display have tangible difference.
The typical prior art close with thin-type image display device is the display with a transparent panel and back plate, panel is interconnected by dividing plate with the back plate, inboard at panel scribbles phosphor pattern, and the one side scribbles conductive layer (this combination also is referred to as phosphor screen).If (being controlled by vision signal) electronics is mapped on the phosphor screen, then form a visible image in front side by panel.This panel can be the plane, if desired, also can be crooked (for example, sphere or cylinder).
A kind of particular type of thin-type image display device is to use a branch of or the multibeam electron bundle, these electron beams begin to be arranged essentially parallel to the display screen plane and extend, thereby bend towards subsequently that display screen makes electron beam direct or by means of for example selecting lattice structure to drop on desirable zone on the phosphor screen.(described electron beam is interpreted as that the path that refers to intrafascicular electronics is substantially parallel, promptly has only a low-angle ground to extend mutually, and electronics is arranged along its principal direction that moves), the display of the controlled electron beam work of above-mentioned usefulness especially needs complicated electro-optical structure.
And, if big slightly (channel plate) matrix type electron multiplier that needs a complexity usually of single electronic beam type image diplay screen dimensions.
In view of the foregoing, an object of the present invention is to provide a kind of thin-type image display device that does not have the aforementioned display device shortcoming basically.
According to the present invention, has vacuum envelope, be used to show that the image diplay of the image of being made up of pixel on the phosphor screen contains a plurality of juxtaposed electron production source, basically the localized electronic passage of being made up of electrical insulating material with interactional its wall of electron source (secondary emissionratio of this insulating material is suitable for form with electron stream by the vacuum transmission electronics that produced) and in order to every beam electrons stream is pulled out from its passage precalculated position (particular order) and the device of the image that the phosphor screen that leads is made up of pixel in order to generation, electron channel has electrode assembly and is used for generation axial electric field Ey and transverse electric field Ex in working order.
The method that the invention provides thin-type image display device is based on such discovery, if promptly at interval vertically add enough strong electric field (for example applying electrical potential difference) at the interval longitudinal component, when making electronic impact, find that it is possible that electronics transmits to when being the wall portion in the determined elongated chamber of finding time of wall (so-called layout) formed of electrical insulating material (for example glass or plastics) basically.Impingement of electrons produces secondary electron by interacting with wall, and these secondary electrons attracted to farther wall portion and then produce secondary electron by interacting with wall.As will be described further, environment (the secondary emissionratio δ of the resistance of electric field strength, wall, wall) will be selected like this, even the vacuum current at interval is constant.
By pulling out electronics and make it, thereby on phosphor screen, form image towards phosphor screen from the desirable position of a plurality of adjacent electron streams.It is important making electronics in the passage not have too high speed in this case.If a plurality of electronics speed when transmitting by electron channel is too high, this will cause shielding the image loss contrast.Speed is too high to be because with the elastic collision (back scattering) of wall or because the low electronics of initial velocity contact with wall or the suitable distance of having moved (greater than several millimeters), and obtains behind the increasing energy ability on the way and meet with wall and take place.For avoiding it, electron channel according to the present invention has electrode assembly and is used for producing in working order axial electric field (Ey) and transverse electric field (Ex).Thereby reach the purpose of every beam electrons flow restriction at the longitudinal region of pressing close to conduit wall.We can say that electronics " jumping " in transmission is crossed described wall, reaches the expectation effect.
First embodiment of display is characterised in that according to the present invention, electron channel is made of the determined elongate cavity of basic electrical insulating material wall with secondary emissionratio δ, provides many extraction aperture so that all extraction aperture are formed the arrangement of row and column together at each cavity towards fluorescence screen side.In this case, δ and E have and can make the value of electric transmission by cavity.By using rows of electrodes sequentially to provide extraction aperture to obtain a choice device, described these electrodes are executed electricity by means of first (just) voltage (pulse) electron stream are taken out from cavity by delegation's extraction aperture, if perhaps do not have electronics certain zone from cavity to take out then this electrode is executed by second (lower) voltage.The electronics of pulling out from cavity by this choice device points to screen by applying an accelerating voltage.Electrode assembly also can be used to provide electromotive force that (substantially linear) from screen to (back) wall increases and one similarly (linearity) increase but lower electromotive force at (preceding) wall towards screen.Electric field Ey produces like this.For example, the rear wall electromotive force can accurately be determined by means of the high-ohmic resistance layer that adds thereon.This resistive layer can have tortuous or zigzag pattern to increase resistance.A kind of available method is to select such material to make in electronic transmission process the application to the rear wall electric charge that produced become possibility for rear wall.The electromotive force of antetheca can be adjusted, and for example, by providing many parallel for example banded electrodes in screen the electron channel here, these electrodes give the electromotive force that an approximately linear increases in working order.These electrodes also can be used for promoting by extraction aperture for example being provided in these electrodes and they being connected in order to provide (positive) selection voltage to select (image) line.
These electrodes for the purpose of satisfied definition and contrast further can be multiplet and (perhaps) they have to screen and extend and the electrode assembly coaxial with extraction aperture.
All electron streams that produced by electron source should be guided through the part of phosphor screen top edge at least or lower limb height in electron channel.For this purpose, can provide delegation's electron source or multirow parallel electron source.
Each electron source can be placed on and make it in the electron channel to match, but preferably each electron source is placed on the outside that faces the electron channel inlet that makes it to match.
By apply enough big positive potential difference between electron source and electron channel inlet, the electronics that is penetrated by electron source accelerates to electron channel, and they produce secondary electron by means of the interaction with wall in electron channel subsequently.
Suitable electric potential forces electronics " jumping " to cross wall in the demonstration that is proposed.When launching, can reach number of electrons at a high speed owing to the effect that its direction at wall is subjected to electrostatic force is limited with this pattern.
In electron channel, the speed that electronics to increase, in electronics and the approaching speed that is equivalent to the 30eV energy of the moment of wall collision, this equals secondary emissionratio and equals the energy that possessed at 1 o'clock.The electronics admission passage that has than macro-energy may cause the contrast problem, and this is to have macro-energy like this to selecting electrode and shield to move so that they can overcome opposite direction (Ex) and arrive to shield to go up undesirable position after back scattering on the wall because of them.
According to the feature of a most preferred embodiment of display of the present invention be each electron source with and its electron channel inlet portion of matching between placed speed limiting device, guarantee that in some sense emitting electrons must pass electron channel with any wall collision.
By for example with electronic emitter with respect to the wall arrangement of electron channel at angle then electronics be impossible with the high speed admission passage.When their admission passages collide once with wall at least immediately.Set up " electronics crafty plot " (" electron chicane ") by this way.An embodiment based on this thought is characterised in that speed limiting device comprises a wall part, and it is to settle like this: make emitting electrons and its collision and make the secondary electron that produces in the collision and the wall of electron channel collides.
Another kind of electric scheme is that the electronic emitter that matches with drive electrode is arranged, and they settle and execute electricity by this way, even electronics is towards the wall emission of the inlet portion of electron channel.
Another kind of magnetic scheme is that electronic emitter is matched with magnetic field generation device, and this device produces magnetic field and makes the wall of emitting electrons deflection electron channel inlet portion.
A kind of (line) that is parallel to a plurality of electronic emitters of phosphor screen (limit) arranged and can be used to make in electron channel the electron stream of generation to pass vacuum.Hot cathode and cold cathode such as field emission device all are suitable for this purpose.
The electronics of pulling out with the line order from electron channel can make electronics quicken (as bundle) directive phosphor screen by add enough big electrical potential difference (for example 3KV) between electron channel and screen.Can write a picture lines simultaneously like this.Form with for example pulse width modulation presents vision signal (gray scale).Distance to screen can be very little so that image point is little.By the positioning of beam structure example can make extraction as the version with level and/or vertical wall between electron channel and phosphor screen the acceleration single positioning of beam towards screen is provided.
Importance of the present invention is if electron channel has sidewall, and these sidewalls also are used as the inner space and support, and therefore (for example＜10mm) compare and will approach by gross thickness with those known thin-type image display devices for the front and rear wall of image diplay of the present invention.The embodiment of Lian Jieing is characterised in that the vacuum sealing shell comprises that a fluoroscopic transparent panel of its medial support and one are placed in the back plate with panel close proximity place like this, interconnect by means of the dividing plate front and rear panel, panel and the back space between plate holds the inner space to be supported, and it is that sidewall by electron channel constitutes that part supports.Another part that the space is supported can be made of the positioning of beam wall system, and this system is provided between the wall of panel and electron channel, and wall and electron channel are at angle.
Another embodiment is characterised in that the space is supported and is made up of the option board of the electrical insulating material with extraction aperture, the electron channel wall keep option board and afterwards plate be separated.Option board can be to fill out the slab that is placed between electron channel wall and panel.Perhaps, this option board can approach, and the positioning of beam wall that makes panel and option board keep being separated can be between option board and panel.In this case the positioning of beam wall can be for example laterally and/or be parallel to the electron channel wall and extend.
To be described in more detail with reference to the accompanying drawing some embodiments of the present invention, label identical in the accompanying drawing is used for components identical.
Fig. 1 is the schematic perspective view according to image diplay part-structure of the present invention, and part is cut open, and its element is not drawn in proportion;
Figure 1A is the side cutaway view of Fig. 1 structure, illustrates general operation of the present invention;
Figure 1B has shown (selection) electrode arrangement that is used in Fig. 1 structure;
Demonstration is used for operation and the voltage pattern of the specific electron passage of Fig. 1 structure for " vertical " cross section to Fig. 2 A with 2B;
Fig. 3 has shown that this is characteristics of the present invention as the curve of the function of original electron ENERGY E p, wall material secondary emissionratio δ;
Fig. 4 is part-structure " vertically " sectional view of another program of Fig. 2 A structure;
Fig. 5 has shown the large-area planar panel type display of being made up of a plurality of display modules of the pattern according to the present invention; And
Fig. 7 has schematically shown the image diplay according to another kind of scheme of the present invention.
Fig. 1 and 1A representative are according to thin-type image display device 1 of the present invention, and it has a display floater (window) 3 rear wall 4 relative with described panel with its position.An electron source apparatus 5 for example provides the filamentary cathode of a large amount of electronic emitters (for example 600) or the separation reflector of similar number by means of electrode, and in the place near wall 2, wall 2 connects panel 3 and rear walls 4.Each reflector provides relatively little electric current, thereby the negative electrode of many types (cold-peace hot cathode) all is suitable for as reflector.Launch and preferably control by vision signal.Another program is that video information is put on the gating structure that is positioned at behind the electron source apparatus (electron source apparatus can be a filamentary cathode in this case).Electron source apparatus 5 is placed in the opposite of the basic passage hand-hole that extends in parallel with screen of delegation, this passage by at interval 6,6 ', 6 " ... wait formation, in this case an at interval corresponding electron source.These be separated with the cavity 11,11 determined by wall ', 11 " ....Each has at least a wall (preferably rear wall) to constitute (for example ceramic material, glass, synthetic material-plated film or do not have plated film) and these materials and all have secondary emissionratio δ＞1(in given original electron energy range and see Fig. 3 by having suitable high-resistance material for the purposes of the present invention at interval).The resistance of wall material has such value so that the field intensity in the needed interval in order to electric transmission (Ey) is 100 under the situation of hundreds of volt/cm orders of magnitude, and total current that might minimum in the wall is passed through.In practical embodiments, realized little electric current to 1 microampere.By apply one tens voltage (magnitude of voltage is determined by environment) to hundreds of voltage magnitude at electron source capable 5 and at interval 6,6 ', 6 " between, quicken towards septal direction from the electronics of electron source, subsequently they in the interval with the wall generation secondary electron that collides.
The present invention is based on such understanding, if promptly at interval vertically add an enough strong electric field (Ey) in the interval of determining by basic electrical insulating material wall the vacuum electronic transmission be possible.Electric field is adapted with inciding Electron energy distribution and spatial distribution at interval, make the effective secondary emissionratio δ of spaced walls eff average out to 1 at work.Whenever entering an electronics (on average) in this case just has an electronics to leave, in other words, and the constant and approaching electron stream that equals to enter by electron stream at interval.If the wall material resistance is high (for all almost untreated glass and kapton, bakelite and ceramic material) enough, even wall at interval can not produce or absorb any pure electron stream so that the electron stream that this electron stream equals to enter in very approximate situation.If electric field is greater than for obtaining the needed minimum value of δ eff=1, below thing will take place.In case δ eff is a bit larger tham 1, wall is positively charged (because very little this electric charge of conductivity can not exhaust) anisotropically then.As a result, electronics on average arrives wall in the time of will be than this positive charge not ahead of time, call by name and talk about, in the average energy that vertically from electric field, absorbs with smaller thereby oneself adjust to the state of δ eff=1.This is a superior aspect, because the exact value of electric field is not very important, it is supplied with one greater than above-mentioned minimum value.
Another advantage is at δ eff ≈ 1 state, and at interval the electron stream in is constant and can be by measuring and feedback or each electron stream in is at interval equated satisfactorily by electron stream control, thereby can realize image uniformly on the phosphor screen.
Spaced walls towards phosphor screen 7 is made of option board 10 in the embodiment in figure 1, and phosphor screen 7 is placed on the inwall of panel 3 (seeing Figure 1A).Option board 10 have extraction aperture 8,8 ', 8 " ... etc.If do a concrete structure, when using the negative electrode of non-discrete driving, can from the hole of hope, electron stream " be drawn " with " gating " structure.Yet, preferably use with by select voltage execute parallel, the poroid bar shaped selection electrode of electricity (9,9 ", 9 " ' ...) negative electrode of the individual drive that cooperates.These select electrode can be arranged in towards the surface of the plate 10 of rear wall 4, or two surfaces.At latter event, relative (poroid) selects electrode preferably by hole 8,8 ", 8 " ' be electrically connected mutually.The electron beam located lateral that " level " wall 12 makes plate 10 and panel 3 apart and guarantees to extract.If will select electrode arrangement at plate 10 towards screen 7 surface, then be favourable (for example Figure 1A) if they cover the zone that this surface is positioned at 12 on wall fully.Can realize selecting on visual wire ground electrode 9,9 ", 9 " ' ..., for example the mode of representing among Figure 1B (have with hole 8,8 ', 8 " ... " level " electrode in coaxial hole).Hole in the electrode generally at least with hole 8,8 ', 8 " ... equally big, if they are big slightly, then to point easily.By means of single negative electrode and select electrode 9,9 ', 9 " ... (matrix) drive and can on screen 7, seek desirable position.The voltage that substantially linear is increased (from negative electrode one side) be added to select electrode 9,9 ', 9 " ... on.When a picture lines must be driven, promptly must a pulsating voltage △ U be added on the voltage own when crossing row at surface current thereafter and to the electron stream of arranging, take out when electronics by the hole of a Kong Hangzhong.Owing to have relative low speed with the collision of its wall, △ U can lower (for example 100V be to the order of magnitude of 200V) in view of the electronics in the interval.Obtain electrical potential difference Va in whole interval height under this situation, this electrical potential difference Va is too little so that can not pull out electronics from the hole.This is by applying a line options pulse generation that this right value is positive.
By " jumping " later the thought of wall 4 transmission electronics in Fig. 2 A, specifically illustrate, Fig. 2 A is another kind of structure " vertically " cross section." jumping over " phenomenon takes place when longitudinal electric field Ey being arranged and make electronic impact insulator (rear wall 4).By making the insulator charging produce transverse electric field Ex.If use random insulating material, then can not determine the electric field gesture and can not suitably control " jumping over ".Can on insulator, provide a low resistance layer so that determine electromotive force better.Yet this needs very high-power when driving display.An actual solution is that a high-ohmic resistance layer is provided on rear wall.And, preferably with rows of electrodes 46,46 ' ... be placed on the wall of rear wall 4.The electromotive force of a linear growth is added on these electrodes, and this electromotive force is lower than the reverse potential on the rear wall 4.This rear wall electromotive force can be regulated by the high-ohmic resistance layer on it is applied voltage.Not only produce axial electric field Ey by this way but also produced transverse electric field Ex.Short of electrode 46,46 ' ... in apply voltage on any, to avoid a lot of electronics to obtain high-speed thereby electric field Ex provides a sensing rear wall 4 to act on electric power on the electronics.This has contribution to contrast." virtual " electrode is provided for and produces energization electric field Ex in the inlet portion 16 of the electron channel of adjacent cathodes 5, and this electric field makes emitting electrons towards rear wall 4.Electrode 46,46 ' ... have big relatively hole to this cylinder 47,47 ' ... or thereby the bar shaped electric conductor can be connected and avoids pulling at the electronics that extracts the charging problem in screen 7 space.By applying an enough big positive pulse voltage (selection voltage) to desirable electrode 46, can reach the electron detachment spaced cavities that makes these positions towards the purpose of screen 7.Shown in Fig. 2 A, in these positions, electric field Ex changes direction.For example the plate shape spacer structure of visible its horizontal wall 12 can be placed in the cavity 11 that is separated by wall 49 and shields between 7 in Fig. 2 A.The hole of this plate structure simply mode hold have cylinder 47,47 ' ... strip electrode 46,46 ' ...Another program of this diaphragm structure be have its hole and strip electrode 46,46 ' ... in the coaxial thick flat board in hole.
As previously mentioned, the electron stream of contiguous rear wall 4 can mechanically be realized located lateral by using (vertically) dividing plate (" sidewall ") between spaced cavities, this dividing plate also supports as the inner space, but mode that also can electricity consumption realizes located lateral, for example, by means of on the rear wall that is applied with suitable electromotive force or vertically-guided device wherein.
Having got rid of in the structure shown in Fig. 2 A provides the electric insulation that has aperture to select dull and stereotyped 10(Fig. 1,1A) necessity.Replace and make thin metal electrode band porose, this is a kind of simple technology.Hole in these electrode strips should equate mutually on the other hand.Yet also there is identical requirement in the hole in the electric current shadow mask plate of TV, and this problem has obtained satisfied solving in low-cost mode.
For the structure applications shown in the key-drawing 2A, Fig. 2 A has shown the part of the rear wall 4 that has high resistance measurement layer 48 in this case, simultaneously electrode 46,46 is selected in many bar shapeds " ... be placed in the opposite of this part.Passing in the work shown in the rear wall 4 partly has for example electrical potential difference of 200V, changes to downside 300V from upside 500V.High resistance measurement layer 48 guarantees that change in voltage is stable.Structure on the rear wall also has the advantage of structure shown in Figure 1 like this.Same electrical potential difference 200V appear at selection electrode group 46,46 in the face of rear wall 4 parts ' ... in, but this is to be condition with opposite that the selection electrode that will transmit a low voltage (being lower than 100V in this case) etc. is placed in position on the rear wall that transmits 500V voltage.For example 300V selects potential pulse of electrode so that this voltage fully surpasses the voltage of rear wall to face portion by give transmitting, then " jumpings " the electronics of cavity 11 rear walls be drawn out in the position of above-mentioned selection electrode hole.In this case, the Continuous Selection electrode is applied continuously select the voltage device that applies of potential pulse to be used for scanning the line parallel with the hole row.Can be used on the picture lines of scanning, selecting pixel with the cavity 11 crew-served devices that are used for single modulation transmitter emission.
The method of making above-mentioned high resistance measurement layer is as follows:
Glass plate is coated with the uniform powder layer that last layer is made up of vitreous enamel particle and RuOx particle or particle-like.Can give the structure of a bending of this powder bed by means of for example delineation, photoetching silk screen printing, the glass plate that will have powder bed then is heated to and makes this resistive layer reach desirable resistance.In this way can realize the resistance of megohm magnitude.In the actual display of correlation type, in this way obtain 10 at the rear wall height
7To 10
10The resistance of ohm.But also application examples such as In
2O
3, SnOx, indium tin oxide (ITO) or antimony tin oxide (ATO) the thin hyaline layer as far as possible of semi-conducting material, also can obtain desirable resistance value.So resistive layer also can be used as and the voltage divider of selecting electrode to link to each other.
The material that is used for the electron channel wall must have high resistance and at least at the certain limit E of original electron ENERGY E p
I-E
IIMiddle secondary emissionratio δ＞1(sees Fig. 3).E
IPreferably low as far as possible, for example one times or times over 10eV.Especially, the glass (E of particular type
IBe about 30eV), ceramic material, bakelite and kapton meet this requirement.Having the material that for example suitable coating (for example MgO) do not satisfy this requirement also can use.
Resistance depends on the gain (part or length overall) that whether needs electric transmission and electron channel and allow to be connected with great total current in the wall relevant with power dissipation.
Using the pattern of electric transmission is unique the best.Resistance between levels is 10 at interval
6With 10
15Between ohm.As another kind of scheme at least the negative electrode sidepiece of electron channel low relatively resistance can be arranged, for example 10K Ω between the 100M Ω with guarantee the gain.Power demand is not higher than 100W in the value of mentioning in the above.
In a given example, by applying the voltage of 3.5KV at its two ends, be measured as at the resistance of the whole length of long 17cm internal diameter 1mm(＞10
15Ω) realized electric transmission in the lead glass interval.
Be furthermore noted that conduit wall is made of the electrical insulating material with conformation function and Secondary Emission function.In addition, they can be made of (for example synthetic material) the electrical insulating material with conformation function, and the coating that one deck has the Secondary Emission function (for example quartz or glass or such as the ceramic material of MgO) is provided on this material.
The voltage at the electron channel two ends that electric transmission is required increases along with the length of passage.Yet, can reduce this voltage to replace being placed in display " end " portion's (see figure 1) by electron source arrangement (line) being placed in central authorities.For example the electrical potential difference of 3KV can be put between passage central authorities and its top with electron stream is drawn " on ", same electrical potential difference can be added in subsequently between central authorities and the bottom so that electron stream is drawn D score, thereby substitute the electrical potential difference that when electron source is placed in display " bottom " whole height will apply 6KV.Use many parallel electron sources capable even more useful in this respect.
The electronics that the selected electrode in hole from electron channel is pulled out (with the form of " bundle ") is once write a picture lines towards phosphor screen 7 on screen 7.Can use video information, for example with the pulse-width modulation form.For example the negative electrode that matches with electron channel is executed time or the weak point or the length of electricity.For producing a white pixel, for example in this case whole line in the cycle target execute.Under the another kind of situation whole line in the cycle target execute.Another scheme is to execute electricity and control its emission level in that whole line cycle target is constant.When using with reference to Fig. 2 A and 2B described " jumping over " pattern, suitable electromotive force forces electronics to skip specific conduit wall.When with this mode activated, can reach electron number at a high speed and be restricted owing to electronics is subjected to the effect of wall direction electrostatic force.
Electronics obtains ever-increasing speed in electron channel, with moment of wall collision near energy corresponding to 30eV, this equals secondary emissionratio is 1 energy.With macro-energy is that energy equals the electronics that Gz electromotive force (greater than 30eV) enters electron channel 11 cause the contrast problem after back scattering.
As shown in Figure 4, the inlet portion 16 of electron channel 11 has the wall 15 of the inclination of an electric insulation or electrical conductor material, this wall target 5 and drive electrode G1 and G2.This makes the electronics of launching impossible with the high speed admission passage.Electronics is incited somebody to action directly and the inclined wall behind the G2 15 bumps against.Wall 15 is placed in such a manner and is forced inlet portion to enter hole 14 towards electron channel 11.Thereby produce a speed limit " electronics crafty plot ".
Also can produce crafty plot like this by diverse ways, for example, finish the structure of drive electrode G1 and G2 in the passage that does not have inclined wall part 15 in such a manner or execute electricity to them in such a manner so that in the inlet portion 16 total the and wall of negative electrode 5 electrons emitted collide.Another kind may be that orthogonal negative electrode 5 and drive electrode G1 and G2 axis of no-feathering are extended at angle with the axle with inlet portion 16.The inlet portion here is interpreted as the electron channel part with extraction aperture.
By hole 8(Fig. 1) electron beam that extracts can be for example by means of " level " wall 12(Fig. 1), " vertically " wall 18(Fig. 5) or locate by means of plate shape wall construction (Fig. 2 A).In the situation that all inner spaces are supported front and rear wall can be approach (≤1mm) so that image diplay itself is in light weight.And this image diplay is to the very little for example 1cm of horizontal external dimensions (thickness) of screen.This just provides the possibility of widely applying, in following report illustrated:
Pixel/size 575 picture lines 1000 figure linea angulatas are used
600 pixels/line HDTV screen dimensions
Screen dimensions
233 * 1000 μ m 40cm * 50cm 69cm * 118cm living room
1 * 3mm 1.72m * 2m 3m * 5.3m drama institute
3.3 * 13mm 5.75m * 6.6m 10m * 17m is large-scale in the open
Sports ground
Because it is in light weight and (side) wall thin, display according to the present invention also offers a kind of perfect solution of unitization structure of " large-area planar screen ".In other words, as shown in Figure 6, large-area planar screen display 57 can be formed (being connected to form the module with desired display size) by many displays 58 according to adjacency of the present invention.Distance between the pixel of these modules (=picture element) size, pixel pitch and pixel rows can be relative more greatly.Specifically, pixel pitch and line-spacing make from a module continuous in continual substantially mode to another block of pixels figure can for value like this.
Such module can have simple structure.Fig. 7 has shown the example of the part of a possibility structure.Figure has shown the dull and stereotyped 50(rear wall of two delineates) and the 51(antetheca), the side that they are drawn laterally is placed on it mutually.Some sizes have been provided among the figure as an example.Dull and stereotyped 50 and 51 can be made by ceramic material or glass, and desirable contour shape provides in the mill.For example, plate material can have adhesive and with its injection moulding.Subsequently, with this adhesive heating and sintering.In addition, this flat board can be made by sol-gel process, for example SiO
2Gel forms colloid in mould.After taking-up and drying then is sintering process.
Form electron channel in the space 52 between the wall of on dull and stereotyped 50, holding up.In order to guide electronics on the phosphor screen 53 that is placed in dull and stereotyped 51 inner surfaces desirable position from passage 52, this flat board 51 forms the selection track 54,55,56 with electrical conductor material ..., they can be driven in pairs.
If necessary, it is that purpose of the present invention has sufficient secondary emission material that high resistance measurement layer 60 is coated with last layer, for example MgO can be provided at dull and stereotyped 50 inner surface.In this connection, be that as the advantage of the metal oxide layer that comprises glass enamel of high resistance measurement layer the Secondary Emission of this layer own is just fully high for purpose of the present invention usually.
Have only dull and stereotyped 50 or dull and stereotyped 51 can form, and the method that the other part of this display can be other form with above-mentioned method.
Claims (11)
1, a kind of vacuum-packed image diplay that is used to show the image of forming by pixel on the phosphor screen, it contains:
A plurality of juxtaposed sources that are used to produce electronics,
The localized electron passage that matches with the source, it has the wall of the vacuum of being adapted to pass through with the basic electrical insulating material of the secondary emissionratio of the electron flow form transmission electronics that produced,
Be used for taking out each electron stream and it guided into the fluoroscopic device that produces the image of being made up of pixel from the passage precalculated position,
Described electron channel has the electrode assembly that is used for producing in working order axial electric field Ey and transverse electric field Ex.
2, display as claimed in claim 1, it is characterized in that described electron channel is made of the determined elongate cavity of wall of the basic electrical insulating material with secondary emissionratio δ, the side of each cavity is facing to the phosphor screen with many extraction aperture, and all these extraction aperture connect and compose the arrangement of row and column.
3, display as claimed in claim 1, it is characterized in that being equipped with described electrode assembly in order to provide one by away from the ever-increasing electromotive force of the conduit wall of screen and one by in the face of the similar growth of wall of screen but low slightly electromotive force.
4, display as claimed in claim 3 is characterized in that providing the low potential slightly that increases under a plurality of parallel poles of arrangement are with the situation of linking first loop in the electron channel of screen side.
5, display as claimed in claim 4 is characterized in that described electrode has Kong Bingke and is connected to second loop to provide one to select voltage.
6, display as claimed in claim 1, it is characterized in that speed limiting device is installed in electron source and electron channel (inlet) part that matches with it between, then can not pass electron channel with the electronics of guaranteeing to launch with the wall collision.
7, display as claimed in claim 6 is characterized in that described restraint device comprises the wall portion of arrangement like this so that emitting electrons collides with it and produce secondary electron in colliding with the electron channel wall.
8, display as claimed in claim 1, it is characterized in that vacuum envelope contains a fluoroscopic transparent panel of its medial support and the very near back plate of the arrangement described panel of distance, they are interconnected by dividing plate, are holding the inner space support that is formed by the electron channel wall to small part in the space between panel and back plate.
9, display as claimed in claim 8 is characterized in that the support of described space contains the selection flat board of the electrical insulating material with extraction aperture, and the wall of electron channel makes to be selected dull and stereotyped and back plate maintenance apart.
10, display as claimed in claim 9 is characterized in that selecting flat board that two interareas are arranged, and at least one support has with the bar shaped in the coaxial hole of extraction aperture selects the parallel row of electrode.
11, have the large-area planar screen display of many adjacent image diplays as claimed in claim 1, described image diplay is connected to form the array with desired display size.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9000060A NL9000060A (en) | 1989-06-01 | 1990-01-10 | IMAGE DISPLAY DEVICE OF THE THIN TYPE. |
| NL9000060 | 1990-01-10 | ||
| NL9001266 | 1990-06-05 | ||
| NL9001266A NL9001266A (en) | 1990-01-10 | 1990-06-05 | Thin type picture display device - has individually ducted parallel electron currents deflected at predetermined locations from their ducts to luminescent screen |
| NL9002566A NL9002566A (en) | 1990-11-26 | 1990-11-26 | Thin type picture vacuum envelope display device - has front wall supporting luminescent screen at inner side rear wall short distance accommodating adjacent electron sources |
| NL9002566 | 1990-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1053320A true CN1053320A (en) | 1991-07-24 |
| CN1082242C CN1082242C (en) | 2002-04-03 |
Family
ID=27352335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91100134A Expired - Fee Related CN1082242C (en) | 1990-01-10 | 1991-01-07 | Thin-type image display device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0436997B1 (en) |
| JP (1) | JP3068653B2 (en) |
| KR (1) | KR910014989A (en) |
| CN (1) | CN1082242C (en) |
| DE (1) | DE69026233T2 (en) |
| ES (1) | ES2086365T3 (en) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614781A (en) * | 1992-04-10 | 1997-03-25 | Candescent Technologies Corporation | Structure and operation of high voltage supports |
| US5675212A (en) * | 1992-04-10 | 1997-10-07 | Candescent Technologies Corporation | Spacer structures for use in flat panel displays and methods for forming same |
| US5557296A (en) * | 1989-06-01 | 1996-09-17 | U.S. Philips Corporation | Flat-panel type picture display device with insulating electron-propagation ducts |
| US5903094A (en) * | 1990-05-24 | 1999-05-11 | U.S. Philips Corporation | Flat-panel type picture display device with electron propagation ducts |
| US5525873A (en) * | 1990-05-24 | 1996-06-11 | U.S. Philips Corporation | Picture display device comprising a flat-panel type display unit |
| US5625253A (en) * | 1990-05-24 | 1997-04-29 | U.S. Philips Corporation | Flat-panel type picture display device |
| US5489815A (en) * | 1990-05-24 | 1996-02-06 | U.S. Philips Corporation | Flat-panel type picture display device with electron transport ducts and a double selection structure |
| US5701134A (en) * | 1990-05-24 | 1997-12-23 | U.S. Philips Corporation | Picture display device with uniformity correction of electron supply |
| US5621271A (en) * | 1990-05-24 | 1997-04-15 | U.S. Philips Corporation | Display device of the flat-panel type comprising an electron transport duct and a segmented filament |
| BE1007259A3 (en) * | 1993-07-01 | 1995-05-02 | Philips Electronics Nv | A display device comprising a display UNIT OF A FLAT PANEL TYPE. |
| US5986627A (en) * | 1990-05-24 | 1999-11-16 | U.S. Philips Corporation | Flat-panel type picture display device with electron propagation ducts |
| EP0550103B1 (en) * | 1992-01-03 | 1998-04-15 | Koninklijke Philips Electronics N.V. | Flat-panel type picture display device with electron transport ducts and a double selection structure |
| US5532548A (en) * | 1992-04-10 | 1996-07-02 | Silicon Video Corporation | Field forming electrodes on high voltage spacers |
| US5424605A (en) * | 1992-04-10 | 1995-06-13 | Silicon Video Corporation | Self supporting flat video display |
| US5477105A (en) * | 1992-04-10 | 1995-12-19 | Silicon Video Corporation | Structure of light-emitting device with raised black matrix for use in optical devices such as flat-panel cathode-ray tubes |
| US5742117A (en) * | 1992-04-10 | 1998-04-21 | Candescent Technologies Corporation | Metallized high voltage spacers |
| JPH0777949A (en) * | 1993-05-28 | 1995-03-20 | Philips Electron Nv | Image display device as well as selective drive circuit and integrated drive circuit used in image display device |
| US5598054A (en) * | 1993-06-02 | 1997-01-28 | U.S. Philips Corporation | Display device of the flat-panel type comprising an electron transport duct and a segmented filament |
| KR950703204A (en) * | 1993-06-08 | 1995-08-23 | 프레데릭 얀 스미트 | Flat-panel type picture display device |
| WO1995027997A1 (en) * | 1994-04-08 | 1995-10-19 | Philips Electronics N.V. | Display device |
| EP0727081A1 (en) * | 1994-09-07 | 1996-08-21 | Koninklijke Philips Electronics N.V. | Colour display device |
| DE69527701T2 (en) * | 1994-09-21 | 2003-07-03 | Koninklijke Philips Electronics N.V., Eindhoven | WIRE-SHAPED CATHODE OF AN INDICATOR DEVICE WITH SHELL |
| JPH09507953A (en) * | 1994-10-31 | 1997-08-12 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Image display device provided with internal vacuum support and exhaust connection |
| US5543683A (en) * | 1994-11-21 | 1996-08-06 | Silicon Video Corporation | Faceplate for field emission display including wall gripper structures |
| US5578899A (en) * | 1994-11-21 | 1996-11-26 | Silicon Video Corporation | Field emission device with internal structure for aligning phosphor pixels with corresponding field emitters |
| US5650690A (en) * | 1994-11-21 | 1997-07-22 | Candescent Technologies, Inc. | Backplate of field emission device with self aligned focus structure and spacer wall locators |
| WO1996026514A1 (en) * | 1995-02-23 | 1996-08-29 | Philips Electronics N.V. | Picture display device |
| JPH11500859A (en) * | 1995-11-08 | 1999-01-19 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Vacuum tube with linear getter |
| US6049165A (en) * | 1996-07-17 | 2000-04-11 | Candescent Technologies Corporation | Structure and fabrication of flat panel display with specially arranged spacer |
| US5859502A (en) * | 1996-07-17 | 1999-01-12 | Candescent Technologies Corporation | Spacer locator design for three-dimensional focusing structures in a flat panel display |
| US6278066B1 (en) | 1996-12-20 | 2001-08-21 | Candescent Technologies Corporation | Self-standing spacer wall structures |
| US6414428B1 (en) | 1998-07-07 | 2002-07-02 | Candescent Technologies Corporation | Flat-panel display with intensity control to reduce light-centroid shifting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069439A (en) * | 1977-02-02 | 1978-01-17 | Rca Corporation | Flat panel display with beam injection cleanup |
| GB2110465A (en) * | 1981-11-09 | 1983-06-15 | Philips Electronic Associated | Flat panel display tube |
| US4719388A (en) * | 1985-08-13 | 1988-01-12 | Source Technology Corporation | Flat electron control device utilizing a uniform space-charge cloud of free electrons as a virtual cathode |
-
1990
- 1990-12-21 DE DE69026233T patent/DE69026233T2/en not_active Expired - Fee Related
- 1990-12-21 ES ES90203471T patent/ES2086365T3/en not_active Expired - Lifetime
- 1990-12-21 EP EP90203471A patent/EP0436997B1/en not_active Expired - Lifetime
-
1991
- 1991-01-07 CN CN91100134A patent/CN1082242C/en not_active Expired - Fee Related
- 1991-01-08 KR KR1019910000152A patent/KR910014989A/en active IP Right Grant
- 1991-01-09 JP JP3012772A patent/JP3068653B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1082242C (en) | 2002-04-03 |
| JPH04212245A (en) | 1992-08-03 |
| KR910014989A (en) | 1991-08-31 |
| JP3068653B2 (en) | 2000-07-24 |
| EP0436997B1 (en) | 1996-03-27 |
| DE69026233T2 (en) | 1996-10-10 |
| ES2086365T3 (en) | 1996-07-01 |
| EP0436997A1 (en) | 1991-07-17 |
| DE69026233D1 (en) | 1996-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1082242C (en) | Thin-type image display device | |
| CN1027933C (en) | Thin-type picture display device | |
| CN1675734A (en) | Use of printing and other technology for micro-component placement | |
| CN1128461C (en) | Two-plate type flat field emission display | |
| US5347199A (en) | Thin-type picture display device with means for effecting electron transport by secondard emission | |
| KR100859685B1 (en) | Field emission display device having emitter formed of carbon material | |
| JP3060655B2 (en) | Flat panel display | |
| US4387322A (en) | Display arrangements | |
| CN1058297A (en) | Thin type image display | |
| JPS61502151A (en) | Flat panel display with a series of field emission cathodes arranged in rows | |
| KR100863952B1 (en) | Field emission display device having emitter formed of carbon material | |
| CN1913089A (en) | Electron emission device, electron emission type backlight unit and flat display apparatus having the same | |
| US4801850A (en) | High brightness vacuum fluorescent display (VFD) devices | |
| CN1525524A (en) | Flat panel display device | |
| CN1030630C (en) | Flat-panel picture display device | |
| WO1997023862A1 (en) | Flat-panel matrix-type light emissive display | |
| KR20030063000A (en) | Construction for CNT cold cathode of flat type CRT | |
| KR100284539B1 (en) | KAIST Field Emitter Display | |
| CN1691267A (en) | field emission display | |
| CN101552172B (en) | Electron beam display | |
| CN1286491A (en) | Vacuum fluorescent display device | |
| US5144198A (en) | Electron feeder for flat-type luminous device | |
| KR100545713B1 (en) | Flat CRT structure | |
| JPS6310434A (en) | Plane type display device | |
| CN1145688A (en) | Method and device of matrix display |
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 |