CN1012856B - Display devices and display elements thereof - Google Patents

Abstract

A light reflective display element comprises sets (10, 20, 30, 40) of vanes of which corresponding vanes, e.g. the group (12, 22, 32, 42), have the same colour, at least one of the groups being slidable by a rod (110) between positions in which the group is visible and in which the group is hidden behind another group. To provide shading the movable group can also occupy intermediate positions; in addition or alternatively the group may be oscillated at a frequency too high to be observed by the human eye. When four groups of vanes are provided corresponding to black and three primary colours, secondary colours of varying degrees of brightness may be simulated, to reproduce the effects of a colour television set. The elements may be combined to form alpha-numeric displays or large picture arrays.

Description

Display devices and display elements thereof

The present invention relates to a kind of display element and a kind of display device that comprises many this elements, particularly relate to a kind of light reflection display element that can control reflective character that has, described display element refers to a fraction of " point " that only constitutes in the display device in the whole picture area.

For example large scale image apparatus in sports ground and the display device such as arabic numeral display device in airport and railway station have many shortcomings.For example as the photoemissive color monitor that shows of three looks only the sub-fraction of surface area be used to produce every kind of color.On device,, only used useful surface area less than 1/3rd in order to show " blueness " with the color TV principle.For the device of using colored electric lamp bulb, even only used the more surface area of fraction.Use the display of the mechanical light reflection display device of baffle plate or turnover panel, can only do quite slow conversion; And this baffle plate or visible, diminishing the direct-view profile of display in this case, or be hidden in after fixing the covering, this has just reduced the useful area of display.

The objective of the invention is to manage to overcome or reduce above-mentioned one or more shortcomings.

Disclose a kind of display device in Fig. 6 of French Patent (FRP) FR2229332, it has the V sheet of many a kind of colors, and the front that the V sheet can rotate to the stator G of second look selectively enters sight line.The shortcoming of this structure is: can only pivot rather slowly, for fear of the collision between V sheet and the G sheet, need a bigger radius that pivots.In addition, in order to hide stator fully, movable plate must be installed prejudicially.And, can both see simultaneously from best angle for not every.Also have, the exhibiting high surface of this device of French Patent (FRP) FR2229332 is made up of fixing shell.

Therefore, first purpose of the present invention is to provide display device, and it comprises a plurality of display elements, and they form the matrix that covers an area, also comprise the control device that each element characteristic is set, thereby the information of expectation is shown on this area.Characteristics of the present invention are that this element has two in many covers or multi-disc, and one of the sheet of each cover of visible its front surface is followed on another ground, back and arranged from the front.These sheets in every cover are placed in the closely adjacent parallel surface, and these covers also are parallel, but arrange front and back.Display device also comprises the drive unit of each group that respective flap in the every cover that is used for driving except that the foremost forms, so that the front of sheet can be seen selectively, every group of sheet has the color that is different from other group separately.An advantage of this device is that color demonstration very flexibly can be provided.

Second purpose of the present invention provides a kind of display device, and wherein all groups (except that top) that formed by respective flap in every cover all can be divided, thereby can see the front of sheet selectively; Drive unit can be to the sheet location of each group in two extreme positions and the discrete location between them.

The advantage of this structure is that the response time of display element can be very short, for example little to 10 milliseconds or still less.Because all these sheets are parallel, avoided the contact between them, the conversion that contact can be slowed down and be shown, so that cause damage.Another advantage is many such elements can be assembled into a display device, and all basically surface areas all help to show in this device.Basically there is not shadow region because of the display area of fixed housing or the formation of invalid viewing area.

Preferably each movable group is installed on the corresponding support component, for example a pull bar or the plate that is parallel to the blade movement plane that vertically moves.Because the supporting construction of a low inertia is provided and has reduced air resistance, this just helps to drive soon display element.

Sheet in each group has same color, and every group can show by the utmost point when high speed operation neatly.Four groups that are equivalent to black and three primary colors are arranged here, the effect that is similar to color TV can be provided.

In an optimal operations method, these sheets are with fast that human eye be cannot see monochromatic speed vibration.This has an advantage, promptly allows to show secondary colour with any desirable brightness in wide scope, can see demonstration from point blank, primary colours and can not perceive.

In one embodiment, the display element in all sheets and the bracing or strutting arrangement of these groups are made on the workpiece, then bracing or strutting arrangement are connected with the drive unit of each group.Cut off the connection between each bracing or strutting arrangement of organizing after this.

In one embodiment, make one group of sheet earlier as seen, coat required color in its front then, all the other every group all is to handle successively.

Now only with method for example and better embodiment with reference to the accompanying drawings to describe the present invention:

Fig. 1 represents the bottom perspective view of the display element of first embodiment of the present invention.

Fig. 2 and Fig. 3 represent the display element side view of the of the present invention second and the 3rd embodiment.

Fig. 4 a and 4b use the visual angle of diagram display element of the present invention.

Fig. 5 represents the display element side view of the 4th embodiment of the present invention.

Fig. 6 represents the 5th embodiment display element top perspective of the present invention.

Fig. 7 a represents to comprise the side sectional view of display device of three display elements of type shown in Fig. 1.

Fig. 7 b and 7c represent to make up by Fig. 6 the side sectional view of two display device of display element formation.

Fig. 8 a, 8b and 8c represent to constitute with a plurality of display elements according to the present invention the method step of chip module.

Fig. 9 a-9f represents to be used for six drive unit synoptic diagram of display element of the present invention.

Fig. 1 represents display element 100 of the present invention, and this element can be used separately, but forms big display device with the array that is right after the element 100 that adjoins that is arranged in rows and columns usually.This element comprises that there is the shell 101 of a transparent window 102 front, near in the shell of window many rectangular slabs or sheet is set, and arranges every cover by quadruplet 10,20,30,40 and comprises two.The front surface of respective flap forms a sheet group with same colors staining in each cover.For example 11,21,31,41 groups may be dyed black; This group is called the front surface of A1,12,22,32,42 groups and dyes second kind of color, and for example white, this group is called A2.

As shown in the figure, the sheet of A1 group is fixed with respect to shell 101, and the sheet of A2 group is installed on the plate 130, this plate be contained in order again can axially movable tie-strut 110 on.Electromagnetic actuator device 120 can make pull bar reciprocating in direction shown in the double-head arrow 111.In structure preferably, the armature of pull bar 110 constituent apparatus 120 own.A2 group is the position at D score in Fig. 1, and here it is hidden fully, and is complete black so that an observer in angular range X shows when seeing this element.Organize when pull bar 110 drives A2 " on " the position time, the A2 group is to reveal fully, thereby demonstrates white fully.If the application discrete component, the part of black anter 11 or shell 101 may be still as seen; If use the row that a plurality of elements 100 form display device, can adjust the back side that anter 11 is hidden in the sheet 42 of next display element.

Except above-mentioned extreme position, pull bar 110 can move on to any centre position, and like this, display can be represented all color mixtures of black and white, and in common sighting distance, it can manifest all gray tone.

The advantage of the foregoing description is can high speed operation.The response time of drive unit 120,110 may be hanged down and be reached several milliseconds, and as in the TV, this can work display under the speed that is fit to true-time operation.Reduce the distance that each sheet and support member need move by the tricks that increases sheet in each display element, so operating speed can increase further.All motions are carried out in a direction, and this also helps high speed operation, particularly the cross-sectional area of all moving components on direction of motion made as much as possible little, to reduce air resistance.

These sheets can be placed on the vertical line of location of displays decision to become on the position of any angle, and this display is high-visible in wide angular field of view.The side that hides sheet is opaque outer or fixing bar or be that the display element of adjacency obstructs the view in the same delegation of an array.This structure has improved the horizontal view angle.

Both made under very high situation, also guaranteed to have high contrast.Because do not need hinge and cam etc., this display element is highly reliable, and long working life.The manufacturing of display element is simple and cheap, and its energy consumption is low, and operating voltage range is variable, does not need high voltage.

Figure 2 shows that a kind of display element 200 of the present invention.Shell 201 has a transparent front 202 and a support member 205 and an electromagnetic actuator device 220 that is used for fixing sheet is housed, and this drive unit moves the support member 225 of the movable plate that is connected with drive unit 220 by the pull bar 210 that can vertically move.These sheets are arranged to 10,20,30,40 quadruplets as shown in Figure 1, but in this embodiment, every cover comprises four.The anter of these covers is that the A1 that also forms together that fixes organizes, and the A1 group can be dyed black.Second of these covers has different colours, for example green, and forms second group of A2 together.A2 is assembled on the support member 225, and drive unit 220 drives.The 3rd of these covers has another different color, for example red, and forms the 3rd group of A3.The 4th of these covers, promptly last a slice also has different colours, and is for example blue, and forms the 4th group of A4.A3 and each group of A4 group have its corresponding support member, pull bar and electromagnetic actuator device (not shown) respectively, and they can move independently like this.

With A2, A3, the difference of the pull bar amount of movement of A4 group just can obtain any color mixture of wanting of these colors, and in common viewing distance, can obtain any desired tone that obtains.In addition, as seen an adjustment fixedly special part of black-film keeps, and available brightness range is just wide.

In addition, except the advantage of first embodiment, also the change further advantage of color of Fig. 2 embodiment, its mode are only each display element of each primary colors to be added single drive unit.

Fig. 3 represents display element 300 of the present invention, and it has the support member 305 of stator and the support member 325 of each group operation strip.Remove in Fig. 3 when armature pull bar 310 when disembarking the motion of electromagnetic actuator device 320 directions, it is outside moving downward that each of operation strip organized, the embodiment of Fig. 2 and Fig. 3 is similar.Shown this special construction has the advantage of permission display element with another kind of stacking method; In addition, the xsect of this shell can be rectangle basically.

Fig. 4 a and 4b represent the side view of the cover 10,20 of display element, and illustrate the visual angle of this display element.As shown in Figs. 4a and 4b, these sheets normally upwards and forwards tilt in this structure, are observed from the lower left because this shows usually, so cannot see sheet edge or the interval between sheet.Like this, can obtain low background luminance rank and higher contrast.Though also can be to other direction pitch angle, for example resemble among Fig. 5 display element 500 downwards and turn forward, unless observe from the upper left side, otherwise contrast is poor.

For adapting to different application, can elect to the number of sheet, big low height and thickness.With reference to Fig. 4 a, optimal viewing angle " a " be horizontal line and one the cover in the terminal line of sheet when minimum or maximum displacement between angle.Best at this angle display performance, and contrast is maximum.During fabrication, this angle " a " general available relevant group evolution is each other mutually controlled, shown in Fig. 4 b.In other words, the pitch angle of these display elements is adjustable.

The 5th display element 600 of the present invention as shown in Figure 6, it comprises the group A1 of stator 11,21,31 and the group A2 of movable sheet 12,22,32 in itself plane.These sheets are configured in 10,20,30 3 covers.The operation strip of group A2 is connected on the armature 610 of electromagnetic actuator device 620, and the stator of group A1 is connected on the chassis 607.Fully as seen or hiding fully upwards and move down, its displacement is limited by the last lower limb 608,609 of opening armature in the opening 614 that is parallel to plate plane, and opening is as setting element, guarantees that thus operation strip.Setting element also works to reduce armature vibration and swing.

The sheet of group A2 is connected on the armature 610 with the support member 625 of similar framework.

Fig. 7 a is the side view of display device 700; This device comprise the three row display elements 100 that are similar to element 100 or 200 '.

Fig. 7 b and 7c are the side views of display device 720,740, they respectively comprise three row be similar to the display element 600 of element 600 '.The sheet of adjusting these three devices is on different directions.This depends on the desired visual angle that has.

These devices have transparent protecgulum 702,722,742.If use single display element 600, as seen from Figure 6, stator 11 all the time as seen, this has just reduced the dirigibility of display.But wherein a plurality of display elements are configured to delegation, because the operation strip at the display element top of this configuration covers the bottom stator of display element near its top selectively, avoid or have reduced this shortcoming at least to a great extent.In 703,723,743 positions, the wall of shell can be transparent or opaque, if they are transparent, when the operation strip of front portion during in the D score position, the stator in its back is clearly visible.If they are opaque, just make them identical with the color of stator.As the another kind configuration, a plurality of elements can all take the transparency cover of a common shell and front, in this case, can save the wall of 703,723,743 positions.

An advantage of Fig. 7 a, 7b and 7c display device is that their all display areas are effective basically.Another advantage is that these sheets can any desirable angle tilt, makes to reach optimal viewing angle; Owing to transparency cover 702,722,742 is arranged, does not exist rainwater or dust to enter the danger in space between sheet.

Fig. 8 a, 8b and 8c illustrate a kind of appropriate method of making assembling display element sheet of the present invention.These sheets are contained on the feet 801, see Fig. 8 a of a cover 10 of diagram.Pin 801 is connected respectively to plate (F ', G ', R ', B ') as follows.Each sheet respectively has two pin in stator group A1, and these two angles are connected on the chassis with fixed head F '.Each sheet in second group of A2 has independent pin to be connected to (for green) on the plate G '.

Equally, the sheet of the 3rd group and the 4th group A3, A4 is connected respectively on plate R ' (for red) and the B ' (for blue).Plate F ', G ', R ', B ' are connected respectively to pull bar F, G, R, on the B, they are interconnected with middle transverse rod 803.All these sheet 11-44, pin 801, plate F ', G ', R ', B ', pull bar F, G, R, B and cross bar 803 the most handy casting, compacting, injection molding or machining are made a monoblock, and this accurately arranges them at the very start.After the manufacturing, this integrated package is fixed on three electromagnetic actuator devices by following step.Two pull bar F are fixed on the chassis, and pull bar G, R and B are respectively fixed to mutually electromagnetic actuator device 820G, 820R fixed to one another, on the armature of 820B.Sever cross bar 803 then,, each component of sheet is opened, make them movable separately as with machining or cut.Above-mentioned technology can expand to from the monolithic assembling and make a plurality of display elements simultaneously.

Making respectively and assembling under the situation of sheet subsequently, these sheets can japanning before assembling.When making these sheets together, as leading portion described, be useful at the direction spray paint of optimal viewing angle " a ".Coat these colors successively.Encourage an Electromagnetic Drive to put fully, manifest single group, then required color is sprayed on the display element.Electromagnetic Drive is removed de-energisation, repeats this successively and is coated with other color in proper order.When all Electromagnetic Drive are all removed de-energisation, be sprayed on the display element at last with background colour (being generally black).

The electromagnetic actuator device of above-mentioned display element can be all kinds.They may be monostable (spring that for example has a stable state load armature), polarization or bistable state (at this, but the armature magnetic latch is on any one position of two positions).On the other hand, also can use the multistable electromagnetic actuator device, so that these sheets can appear on the centre position.

Fig. 9 a represents a three-stable state electromagnetic actuator device 920, and it comprises yoke 925 and 927, electrode slice 921, and spring washer 929, fixing permanent magnet 922 and solenoid coil 924, this coil has an armature 926, and another permanent magnet 928 is housed on armature.When solenoid coil 924 encourages when getting up repulsive magnets 928 fully, just overcome the attractive force of magnet 922, armature is moved to left fully.When solenoid coil 924 encourages when getting up to attract magnet 928 fully, armature moves to right fully.If this armature is in its farthest right position, and wish that it moves to the 3rd position, i.e. centre position, coil 924 is energized, be used for being enough to make magnet 928 to move to repulsive magnets 928 in time cycle of desired location, aim at magnet 922 and no longer mobile at this position upper magnet 928.Because the power of magnet 922 makes magnet 928 remain on the centre position.

Fig. 9 b represents an armature 906 that is similar to four stable state electromagnetic actuator devices 900 of device 920, but has two groups of permanent magnets 902,903, interacts with permanent magnet 908, except that two terminal positions.Give two stable centre positions.In Fig. 9 a and 9b, fixed permanent magnet 922,902,903 can replace with impermanent magnetized magnetic cell.

Fig. 9 c represents a multistable drive unit 910 with freely-suspended cylindrical shape magnetic core 912.Magnetic core is supported on the undulating springs sheet 916, and armature 914 constitutes the active pull rod of sheet group or is connected with the active pull rod of sheet group.The movable element of device 910 is connected on the spring leaf 916 securely, prevents the axle rotation of element around them.Magnetic core can be located on any desirable position with simulation or continuation mode, this is the reasonable excitation by solenoid coil 918, changes promptly that the amount of the curtage by coil or change of load recycle ratio (duty cycle ratio) determine.

Fig. 9 d represents a kind of electromagnetic actuator device 930, and it makes calutron 931,932, and one and then one of 933 energy are not that the limit is provided with keeping to the side.These devices have armature 935,936 and 937 respectively.At least installing 932 and 933 must be tubulose, and the armature of back device can be by the center of pipe like this.As shown in the figure, these armatures also are tubuloses, but they also can dispose abreast.The configuration of Fig. 9 d makes display element very closely to combine.Calutron 931,932 and 933 preferably each other magnetic shielding get up.

Fig. 9 e is depicted as a kind of electromagnetic actuator device 940, and it has two solenoids, and one of them is 942, and it is contained in another is on 941 the armature.This just constitutes one four attitude device.Combine with the solenoid of similar field engineering, to obtain desirable state number arbitrary number.

Can do the analogue type operation with the arbitrary electromagnet that has the several damping units as the spring, i.e. displacement has a successive scope basically.All these grades can be by changing the excitation duty cycle than obtaining, and an example is a voice coil type electromagnet, as at 950 as shown in Fig. 9 f.This is the electromagnet apparatus that is similar to Fig. 9 c.The combination of voice coil type electromagnet and lightweight sheet provides a demonstration of work fast.Shown undulating springs sheet 951 is preferably by the light material manufacturing.Also can provide undulating springs sheet 952 above one to resist the tendency of any transversal displacement.Outside simulation or continuation mode work, electromagnet can adopt discrete state, promptly works digitally.

Can select the rigidity of undulating springs sheet 951 to make it only when another state changes at a high speed, need whole power from a state.Need only keep a state that has reached with the part of whole power.

Can do many conversion to the foregoing description.

These sheets may carry out static state or dynamic duty.Each operation strip is metastable in long time between twice motion in static type.Between at a time, encourage an electromagnet, only show the color that is connected to these sheets on the electromagnet.By encouraging more than one electromagnet simultaneously, just show two or more primary colors, concerning human eye,, promptly produced secondary colour if viewing distance is long enough to two primary colors are mixed into a secondary colour.It is three that secondary colour requires the minimal amount of electromagnet state, because intermediateness shows that to part these sheets are necessary.

Except upgrading continuously these colors with speed too fast for tracing of human eye, dynamically type work and static type are similar.This is similar to the work of color TV, and frequency of operation may be 25 to 60 hertz.In dynamic type, regulate (duty cycle modulation) with the duty cycle of suitable electromagnetic actuator device and may obtain more intermediate grade number.For example, suppose that the stator group is a black, and three groups of corresponding three primary colors of operation strip group.Show a primary colors by appearing respective flap, appearing the time depends on the desirable intensity of this color, and multiplicity is per second 25-60 time.If appear these sheets in the whole cycle, color is strong, if appear the short period, produces the lower brightness degree of this color.If appear more than one primary colors in this cycle, the color that eyes will be seen is that representative excites the total secondary colour that effectively exposes of primary colors.In order to show yellow, as long as the red and green sheet of quick successively repeat actuation.Human eye will be seen yellow rather than the redness of separating and green, and yellow tone depends on the relative number of times that appears of red and green sheet.This " vibration " (flutter) technology may be widely used in display element.

If the frequency of driving pulse or signal surpass the response time of drive unit, display element is returned to resting state, and this moment, the position of operation strip was corresponding with the mean value of used signal.

The speed of display element of the present invention can further increase by working in a vacuum.Though only in Fig. 6, described setting element, also can in the drive unit of other embodiment, provide setting element, these sheets are located and the minimizing vibration fast and accurately.

One or more groups of these sheets fluoresces or phosphorescence, is particularly useful for night.These sheets can have different shapes (for example not on the same group sheet upper edge different directions open parallel slot), or different polished surface (as lacklustre or glossiness).Rather than the conversion of color; Or these sheets do not have different shapes or different polished surfaces except the colorful one difference.

In all above-mentioned embodiment, every surface is uniform basically.But these sheets can have each detailed part of a required figure in the group, and then the array of display element or display element just produces a complete image.This advertisement that is specially adapted to repeated transformation shows.Another possible application is to change traffic signals, as by a pedestrian's walking or the traffic signals that image constituted of standing.There is not the display graphics of power supply drive unit to represent " safety ", in the promptly above-mentioned example, the image that the people is standing; Like this, if electric power supply is interrupted, this device just loses safety.This signal with common application bulb or other light emitting devices has been compared sizable advantage.

Another form of applicable electromagnetic actuator device is a small machine that drives a guide rod, is twisting a nut that links to each other with the sheet group on guide rod.The displacement of these sheets is controlled with the anglec of rotation of motor shaft and the pitch of guide rod and nut.This motor can provide a continuous output, perhaps may be a stepper motor that discontinuous or digital output are provided.

In all embodiment of the present invention, between each electromagnetic actuator device, shield, to reduce the danger of stray magnetic field and electric field effects and these sheet maloperations.

Available static, piezoelectricity, hydraulic pressure, pneumatic or any other suitable drive mechanism replacement electromagnetic actuator device.

The operation of all display elements in big display device of available computers control, this display device comprises the row and column that display element is a large amount of.Computing machine also can be used for controlling brightness or contrast, selection color and concerning the optimal viewing angle the observer of particular location.In addition, can also store the image that will show, gather return message, and gather and the relevant data of any mistake of appearance.In static state showed, computing machine was controlled brightness by the displacement of controlling these sheets.In dynamically showing, the time that computer control displacement and this displacement are kept; Be that brightness is relevant with the product of the averaging time that appears with the displaying area of sheet.These two amounts can be regulated (duty cycle modulation) directly control by duty cycle, but it should be noted that the response of demonstration may not be linear.The computing machine that comprises ROM (read-only memory) can be used for measuring accurately duty cycle than (duty cycle ratio).The demonstration of a relevant typical display element respond different property information or in a big array or screen the demonstration response characteristic information of each element, can be stored in the computing machine.Desirable brightness degree rank is constantly sent into computing machine, and computing machine goes out duty cycle ratio accurately according to the property calculation of element.These characteristics may need to proofread and correct during display life.The response time of armature, i.e. the time of mobile maximum displacement, may be very short, for example little of several milliseconds or still less; This can make computing machine being adapted to this display device of operation under the speed of true-time operation, as TV.

Can arrange different partly the forming of display element by one seven part characteristic display unit, rather than a basic continuous demonstration.The also available single reflecting surface of dot matrix type display unit is formed, and these sheets are square, circular, rectangle or honeycombed.

When being used to form large screen display device, can produce the high-quality image that is similar to color TV, each display element shows a point of whole image.Large screen display is specially adapted to outdoor, and the strong daylight or the sunlight of there are big advantages, are shortcomings and do not resemble for many existing display device.If necessary, can illuminate display with lamp night.The application that can estimate is a billboard, and information shows, the scoreboard of sports ground, cinema and the TV of giant-screen very.

In the embodiment of Fig. 6, the terminal pivot of arm 610 movably is installed in the inside of electromagnetic actuator device 620.It is slightly curved that the meaning is that these operation strip move.These sheets may be crooked slightly around transverse axis, to keep equidistant separation between them.Follow in another back and place because overlap 10,20,30 one of sheet,, do not need the driving of off-centre or any other complexity as long as simple drive unit is just enough.Each sheet is placed on its concentric ring.

In all embodiment of the present invention, these sheets can be around a Z-axis bending, to improve the horizontal view angle.

In the embodiment of all descriptions of the present invention, there is a sheet group to fix, still, if necessary, all organize all movable.

It is contemplated that a display element of the present invention may only comprise a nest plate.

Color display element is preferably used four groups corresponding to black and three primary colors.In a conversion pattern, there are five groups, in above-mentioned color, add white.Therefore, can provide since two groups to any group of wishing number, available secondary colour and/or have different graphic or the sheet of different surfaces smooth finish adds primary colors or replacement primary colors again.In addition, each display element can have the cover of any number; For the display element of an intended size, to overlap manyly more, the displacement that needs is more little, and it is just fast more to drive these sheets.

Each all can be equipped with a switch by the armature displacement drive these display elements.Such switch provides convenience to confirming details such as display message, is particularly suitable for bank and stock exchange and uses the also available relay-type of this switch contact.

Display element of the present invention is quite cheap, and makes simple, reliable and durable.

Claims (18)

1, a kind of display device, it comprises a plurality of display elements, they form the matrix that covers an area, also comprise the control device that is used for being provided with each element characteristic, thereby desired information is shown on this area; It is characterized in that: this element has two in many covers or multi-disc, each cover from the front one of the sheet of visible its front surface follow in another back and arranging, these sheets in every cover are placed in the closely adjacent parallel plane, and these covers also are parallel, but arrange front and back, display device also comprises the drive unit of each group that respective flap forms in the every cover that is used for driving except that the foremost, thereby the front of sheet can be seen selectively; Every group of sheet has the color separately that is different from other group.

2, the described display device of claim 1 wherein has a plurality of four covers, and three each that movably organize all scribble the monochrome that is different from other group.

3, claim 1 or 2 display device, color wherein is a primary colors.

4, the display device of claim 1, but wherein each driving chip group is installed on separately the support component, and support component can move along the plane of motion of sheet and the direction of its axial plane.

5, the display device of claim 1, but wherein each driving chip group is installed on separately the support component, and support component can be along sheet plane of motion parallel direction sidesway.

6, the display device of claim 5, support component wherein are rotatable at a segment distance place of leaving sheet.

7, claim 1,2,4,5 or 6 display device, wherein the sheet that each can the driving group can occupy two extreme positions, and can be by the drive unit continuous drive to any centre position.

8, claim 1,2,4,5 or 6 display device, but the wherein speed vibration that can driving group driven device can't follow the tracks of with fast human eye of each of sheet.

9, claim 1,2,4,5 or 6 display device, wherein the sheet that each can the driving group can occupy two extreme positions and more than one discrete centre position.

10, claim 1,2,4,5 or 6 display device, wherein each of sheet can the driving group be driven by an electromagnetic actuator device.

11, claim 1,2,4,5 or 6 display device, wherein a slice of at least one display element stashes one of an adjacent display element at least in part.

12, claim 1,2,4,5 or 6 display device, wherein said area forms a plane, and the front surface of sheet this face relatively acutangulates.

13, a kind of light reflection display element, it has the cover of a plurality of two or multi-discs, arrange before and after them, the positive of every cover can be seen in the past, these sheets in every cover are located in the near parallel surface of close next-door neighbour, these overlap abreast but ground, front and back is arranged, the group that respective flap forms in all these every covers, except that top, but individual drive all, so that can see the front of sheet from the front selectively, each group scribbles primary colors separately, and drive unit can be to the sheet location that each in the discrete centre position can the driving group more than in two extreme positions.

14, the display element of claim 13, it has a plurality of 4 covers, movably organizes for three and scribbles the monochrome that is different from other group.

15, claim 13 or 14 display element, frequency look wherein is a primary colors.

16, a kind of light reflection element, it has a plurality of two or three covers, arrange before and after them, the front can be met personally in the past, and the sheet in every cover is located in the closely adjacent parallel surface, these covers are also ground, front and back arrangement abreast also, the group that respective flap forms in all these each covers, except that top, but individual drive, thereby can see its front selectively, the sheet of each group scribbles the monochrome that is different from other group separately.

17, a kind of method of making the element that shows in claim 13 or 14, wherein the bracing or strutting arrangement of the sheet of all display elements and group all is made on the workpiece, then bracing or strutting arrangement is connected on each drive unit of each group, cuts off not the connection between the bracing or strutting arrangement on the same group after this.

18, as seen a kind of method that display element in claim 13 or 14 is tinted wherein makes one group of sheet, coats desirable color then from the front, order colouring in this way then.

Images