CN101295461B - Cathode driving method of field transmitting display equipment and structure thereof - Google Patents
Cathode driving method of field transmitting display equipment and structure thereof Download PDFInfo
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- CN101295461B CN101295461B CN2007100977469A CN200710097746A CN101295461B CN 101295461 B CN101295461 B CN 101295461B CN 2007100977469 A CN2007100977469 A CN 2007100977469A CN 200710097746 A CN200710097746 A CN 200710097746A CN 101295461 B CN101295461 B CN 101295461B
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Abstract
The invention relates to a field emission display cathode driving method and mechanism. The display comprises a cathode board and an anode board, and an anode unit is arranged on the anode board. Two coplanar electrodes corresponding to the same anode unit are separately arranged on the cathode board, and a cathode electronic emission source is arranged on the two electrodes, and anti-phase voltage is brought to the two electrodes alternatively to cause the alternation of positive voltage and negative voltage between two electrodes and to further lead the two electrodes to work as a gate and an emitter alternatively according to the alternation of positive voltage and negative voltage so as to lead the cathode electronic emission sources arranged on the coplanar electrodes to generate electron beam alternatively.
Description
Technical field
The present invention relates to a kind of field emission type flat display, particularly a kind of minus plate type of drive and structure thereof with coplanar structure.
Background technology
In recent years, flat-panel monitor (Flat Panel Display) is owing to have light with thin characteristics, even resolution and brightness also all surpass traditional tv, and be widely used in the demonstration demand of different size, little of mobile phone screen, big billboard to the open air all can be seen the application of flat-panel monitor, and this makes flat-panel monitor luxuriant on market is agitation.
Therefore various dissimilar flat-panel monitors are constantly released on market, comprising LCD (LCD), plasma display (PDP), organic light emitting diode display (OLED) and field emission type display (FED) etc.Field emission type display (FED) particularly, flat-panel monitor for a kind of emerging development in recent years, its principle is to utilize the set cathode electronics emissive source of inner structure to produce electron beam, produce light to clash into pairing fluorescence coating, thereby provide enough brightness to be used as the luminous source of flat-panel screens.
With regard to known technology, field emission type display is to utilize a kind of three-stage structure, it comprises positive plate and minus plate, between positive plate and minus plate, be provided with eyelid retractor, it is except as the support between positive plate and the minus plate, also form the vacuum area interval between positive plate and the minus plate, with the space of moving as electronics.Positive plate comprises anode substrate, is provided with conductive layer on substrate, and conductive layer is provided with fluorescence coating.Minus plate comprises cathode base, be provided with conductive layer at substrate, conductive layer is provided with the cathode electronics emissive source, and gate layer, wherein gate layer provides potential difference (PD) and makes the cathode electronics emissive source produce electronics, and provide high voltage by anode conductive layer, so that the acceleration kinetic energy of electronics to be provided, thus the fluorescence coating on the impinge anode substrate and produce light.
Though yet above-mentioned known configurations can provide field emission type display normal luminous effect, but owing to directly being located between cathode electronics emissive source and the anode of gate layer, and face and be connected on the cathode electronics emissive source, comparatively complexity and cost are higher on making thereby make minus plate.Therefore, known technology afterwards is in order to reduce cost and to improve the defective of said structure on making, develop a kind of cathode electronics emissive source and gate and be located at cathode construction on the copline, this structure is not only comparatively simple on technology, but also can reduce its cost of manufacture.
Though adopt coplanar structure cathode electronics emissive source and gate are formed on the cathode base, to reduce cost and technologic complicacy, but its coplanar design must take bigger plane space, except can't being applied to undersized needs, also can't provide high-order high-resolution needs, and the light-emitting area homogeneity also is restricted, thereby must add reflection horizon or diffuser plate, makes coplanar structure still have shortcoming like this.
Summary of the invention
At above-mentioned defective, fundamental purpose of the present invention is to provide a kind of negative electrode driving method and structure thereof of utilizing reverse voltage to produce the Field Emission Display of electron beam, it is improved known minus plate coplanar structure, copline and the corresponding a plurality of electrodes that separate are set on minus plate, and on corresponding mutually a plurality of electrodes, provide alternating voltage, so that corresponding electrode according to generating positive and negative voltage and respectively as gate and emitter, clashes into corresponding positive plate to produce electronics.
For achieving the above object, the invention provides a kind of negative electrode driving method and structure thereof of Field Emission Display, described display comprises minus plate and positive plate, positive plate is provided with anode unit, the copline setting is separated from each other and two electrodes of common corresponding same anode unit on cathode base, on two electrodes, be provided with the cathode electronics emissive source, and on two electrodes the staggered reverse voltage that applies, produce generating positive and negative voltage between two electrodes alternately, and two electrodes are interlocked as gate and emitter according to the generating positive and negative voltage that is applied, the cathode electronics emissive source of being located on the coplanar electrodes is interlocked produce electron beam in turn, luminous to clash into pairing positive plate.
Compared with prior art, the negative electrode driving method of Field Emission Display of the present invention and structure thereof are easy to realize, cost of manufacture is low, but also can improve the life-span and the efficient of minus plate.
Description of drawings
Fig. 1 is a structure cut-open view of the present invention;
Fig. 2 is an operation chart of the present invention;
Fig. 3 is a voltage cycle oscillogram of the present invention; And
Fig. 4 is another voltage cycle oscillogram of the present invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
Minus plate 1 cathode base 11
Electrode 12a, 12b cathode electronics emissive source 13a, 13b
Anode conductive layer 22 fluorescence coatings 23
Embodiment
Referring now to accompanying drawing the present invention is described.
Fig. 1 is a structure cut-open view of the present invention.As shown in the figure, the cathode construction of display module comprises minus plate 1.Minus plate 1 comprises cathode base 11, is provided with a plurality of coplines and position corresponding mutually electrode 12a and 12b on cathode base 11.Electrode 12a and 12b are provided with cathode electronics emissive source 13a and 13b, the fluorescence coating 23 (as shown in Figure 2) that the common corresponding positive plate of cathode electronics emissive source 13a and 13b 2 is set.Cathode electronics emissive source 13a and 13b and electrode 12a and 12b form and are electrically connected, provide relative generating positive and negative voltage poor via electrode 12a and 12b, with guiding cathode electronics emissive source 13a and 13b generation electronics and clash into pairing positive plate 2 (as shown in Figure 2).
Fig. 2 is an operation chart of the present invention.As shown in the figure, minus plate 1 corresponding positive plate 2, positive plate 2 has anode substrate 21, is provided with anode conductive layer 22 on anode substrate 21, then is provided with fluorescence coating 23 on conductive layer 22.In addition, provide type of drive to control copline and be separated from each other corresponding electrode 12a and 12b, utilize periodic reverse voltage to cause corresponding electrode 12a and 12b to produce voltage difference, respectively as gate and emitter, make the cathode electronics emissive source 13a and the 13b that are located at respectively on electrode 12a and the 12b produce electron beam under the different voltage difference conditions according to the relative generating positive and negative voltage that produces to clash into the fluorescence coating 23 on the corresponding positive plate 2.For example, cooperate shown in Figure 3, on electrode 12a and 12b, apply an oscillator signal, it is the reverse voltage of π for phase differential, be to be 50% in the cycle, make electrode 12a have relative high voltage, and electrode 12b is low relatively high pressure, have high-tension relatively electrode 12a as gate this moment, and the electrode 12b with relative low-voltage is as emitter, the cathode electronics emissive source 13b that the voltage difference guiding that causes between electrode 12a and the 12b to be produced is located on the electrode 12b discharges electronics and forms electron beam, and is luminous to clash into pairing fluorescence coating 23.When the voltage reversal that applied, electrode 12a has relative low-voltage, and electrode 12b has relative high voltage, and as gate, electrode 12a is as emitter by electrode 12b, and the cathode electronics emissive source 13a that is located on the electrode 12a with guiding discharges electronics.
Fig. 4 is another voltage cycle oscillogram of the present invention.As shown in the figure, on electrode 12a and 12b, apply an oscillation signal, it is the reverse voltage of π/4 for phase differential, be to be 25% in the cycle, make electrode 12a when having relative high voltage, electrode 12b has low relatively high pressure, and have high-tension relatively electrode 12a as gate this moment, electrode 12b with relative low-voltage is as emitter, so that cathode electronics emissive source 13b produces electron beam.Otherwise when electrode 12b had relative high voltage, electrode 12a had low relatively high pressure, thereby makes electrode 12b as gate, and electrode 12a makes cathode electronics emissive source 13a produce the pairing positive plate 2 of electron impact as emitter.
In addition, on type of drive, for the electronics that is produced, also can be via for example arteries and veins (dashing) wide (degree) modulation (pulse width modulation, PWM) amount of electrons of coming control cathode electron emission source 13 to be produced, keep the corresponding intermittent driving of electrode, improve the life-span and the efficient of minus plate 1.
The above is the preferred embodiments of the present invention only, is not so promptly limits practical range of the present invention, and every equivalence of doing according to instructions of the present invention and claims changes or modifies, and all should be included in the claim of the present invention.
Claims (3)
1. the negative electrode driving method of a Field Emission Display comprises:
A) being provided with two on same coplanar minus plate is separated from each other and symmetrical electrode;
B) apply staggered reverse voltage on described two electrodes, the voltage of described two electrodes is one high and one low at one time, exchanges high low-voltage in another time exchange.
2. the negative electrode driving method of Field Emission Display as claimed in claim 1 wherein provides periodic reverse voltage in the b step.
3. the negative electrode drives structure of a Field Emission Display, it is in order to corresponding positive plate, described drives structure comprises minus plate, described minus plate has cathode base, described cathode base is provided with a plurality of coplines and is separated from each other the symmetrical electrode in position, the common corresponding described positive plate of described electrode; Whereby for described a plurality of electrodes provide reverse voltage, make described a plurality of electrode according to its generating positive and negative voltage and respectively as gate and emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100977469A CN101295461B (en) | 2007-04-28 | 2007-04-28 | Cathode driving method of field transmitting display equipment and structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100977469A CN101295461B (en) | 2007-04-28 | 2007-04-28 | Cathode driving method of field transmitting display equipment and structure thereof |
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| Publication Number | Publication Date |
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| CN101295461A CN101295461A (en) | 2008-10-29 |
| CN101295461B true CN101295461B (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100977469A Expired - Fee Related CN101295461B (en) | 2007-04-28 | 2007-04-28 | Cathode driving method of field transmitting display equipment and structure thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720856A (en) * | 1970-07-29 | 1973-03-13 | Westinghouse Electric Corp | Binary material field emitter structure |
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- 2007-04-28 CN CN2007100977469A patent/CN101295461B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720856A (en) * | 1970-07-29 | 1973-03-13 | Westinghouse Electric Corp | Binary material field emitter structure |
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| CN101295461A (en) | 2008-10-29 |
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Granted publication date: 20100922 Termination date: 20120428 |