CN103943441B - A kind of field emission excited gas discharge display and driving method thereof - Google Patents
A kind of field emission excited gas discharge display and driving method thereof Download PDFInfo
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- CN103943441B CN103943441B CN201410194803.5A CN201410194803A CN103943441B CN 103943441 B CN103943441 B CN 103943441B CN 201410194803 A CN201410194803 A CN 201410194803A CN 103943441 B CN103943441 B CN 103943441B
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Abstract
The present invention relates to a kind of field emission excited gas discharge display and driving method thereof, described field emission excited gas discharge display comprises a front glass substrate, and described front glass substrate lower surface is provided with an anode, on described anode, is provided with fluorescent material; With a rear glass substrate, be oppositely arranged with described front glass substrate, described rear glass substrate upper surface interval and the parallel strip negative electrode that is provided with, on described strip negative electrode, be coated with an insulating barrier, described insulating barrier interval, top and the parallel strip grid that is provided with, and described strip negative electrode and vertical setting of described strip grid, the crosspoint place of described strip grid and described strip negative electrode is provided with nano material. In the present invention, gas discharge is that a large amount of electronics of launching by cloudy grid-control field emission electron source processed are realized, and can greatly reduce device driving voltage, improves luminous efficiency.
Description
Technical field
The present invention relates to display fabrication techniques field, especially a kind of field emission excited gas discharge display and driving method thereof.
Background technology
Along with the development of information display technology, display has become Main Means global, real-time information interchange. From cathode-ray tube display to liquid crystal display, field-emitter display, display of organic electroluminescence, Electronic Paper and 3 D stereo demonstration etc., the just and then paces of modern science and technology of Display Technique, are presented on people at the moment by the bright and colourful world.
The classification of field emission excited gas electric discharge display structure, can distinguish according to the combination of field emission electron source and gas discharge display device PDP structure. Can be divided into CNT-ACPDP type FGD and MIM-DCPDP type FGD; in CNT-ACPDP type FGD structure, adopt medium protective layer; on the surface electrode of surface discharge type interchange PDP, increase electron emission source CNT; this structure can prevent the decline of the electron source emitting performance of gas atom vulnerable to pollution; adopt to exchange and drive; electrode is made up of X, Y electrode and addressing electrode, improves gas discharge efficiency by the secondary that strengthens MgO. Y electrode and addressing electrode are responsible for scanning addressing, and between X electrode and Y electrode, sustain discharge shows. MIM-DCPDP type FGD adopts the strong electron source MIM of contamination resistance; there is no medium protective layer structure; therefore adopt direct drive; on the upper/lower electrode of MIM and anode, apply suitable drive waveforms; by Waveform Control, MIM launches electronics; electronics bumps and causes gas discharge towards anode movement and gas atom, and excited gas produces ultraviolet ray, and fluorescent material is by ultraviolet ray exited luminous.
CNT-ACPDP type FGD manufacture craft is simpler, but drives complicated. Maintain gas discharge because drive circuit comprises DC control Field Electron Emission with exchanging, when increasing component difficulty, improved design cost, in research application, there is significant limitation. FGD is simple in structure for MIM-DCPDP type, is easy to realize, and adopts the method for direct drive that the design difficulty driving is reduced, and cost-saving, MIM electron source has advantages of that driving voltage is low simultaneously, so research is more extensive.
Effective emitting area of tradition MIM negative electrode is limited to pixel size, this attribute has limited current emission density conversely, electronics is because of the scattering through insulating barrier, top electrode simultaneously, and various trap effects and degradedness, cause finally only having few electronics to cross surface potential barrier and be transmitted in vacuum and absorbed by anode, electronic transmitting efficiency low become the shortcoming of MIM maximum. At present, the maximum current emission density of MIM negative electrode is 50 μ A/cm2, well below the requirement of FED. In order to address this problem, propose to change the method for electrode material or thickness of insulating layer, these operations can effectively increase emission. Replace the regulation and control grid of metal film electrode as device using nano material, thin and continuous nano material film, electronics easily passes and is easy to and controls, and possesses equally stronger contamination resistance, and when can making electron emission characteristic degradation speed be slowed down, FGD is increased device lifetime.
Summary of the invention
In view of this, the object of this invention is to provide a kind of field emission excited gas discharge display and driving method thereof.
The present invention adopts following scheme to realize: a kind of field emission excited gas discharge display, is characterized in that: comprise
One front glass substrate, described front glass substrate lower surface is provided with an anode, on described anode, is provided with fluorescent material; With
One rear glass substrate, be oppositely arranged with described front glass substrate, described rear glass substrate upper surface interval and the parallel strip negative electrode that is provided with, on described strip negative electrode, be coated with an insulating barrier, described insulating barrier interval, top and the parallel strip grid that is provided with, and described strip negative electrode and vertical setting of described strip grid, the crosspoint place of described strip grid and described strip negative electrode is provided with nano material.
In an embodiment of the present invention, between described front glass substrate and described rear glass substrate, be sealed with inert gas.
In an embodiment of the present invention, described nano material is CNT or Graphene.
The present invention also provides a kind of driving method of described field emission excited gas discharge display, it is characterized in that:
Excite while demonstration, in the unit showing at needs, negative electrode applies scanning impulse, the data-signal applying with grid forms voltage difference, and not needing in the unit showing, the voltage applying between negative electrode and grid is backward voltage, can electron emission, scan synchronizing signal of rear generation; If the synchronizing signal of detecting, anode applies write pulse, and voltage difference excited gas radiation ultraviolet ray between grid, ultraviolet ray excited light-emitting phosphor;
Maintain while demonstration, negative electrode applies the negative value voltage lower than scanning voltage, the voltage difference forming with grid maintains electron emission, and the voltage difference between grid and anode is not enough to remotivate gas atom and but can maintains the atom continuation radiation ultraviolet ray having excited simultaneously, reaches the object that maintains demonstration.
In an embodiment of the present invention, provide one drive circuit, described drive circuit comprises prime control circuit module and rear class drive system module; Described prime control circuit module comprises video acquisition processor, Data Buffer Memory and FPGA control module, and described rear class drive system module comprises the driving of anode gray modulation, grid Data driver and negative electrode turntable driving.
In an embodiment of the present invention, described video acquisition processor comprises video reception module, video a/d modular converter and Data Format Transform module.
The present invention has the following advantages: 1. than CNT-ACPDP type FGD, manufacturing process and the drive circuit of MIN-DCPDP type FGD are fairly simple, can reduce production costs. 2. in field emission excited gas discharge display of the present invention, gas discharge is that a large amount of electronics of launching by cloudy grid-control field emission electron source processed are realized, and can greatly reduce device driving voltage, improves luminous efficiency. 3. the field emission excited gas discharge display electron source in the present invention adopts MIN cathode construction, by seeing through between the easier gap that must interweave from nano material of electronic energy of coming in bottom electrode tunnelling, greatly reduce scattering and the trap effect of top electrode to electronics, thereby improve electronic transmitting efficiency. 4. scan and maintain the drive waveforms separating, the voltage when between the cloudy grid of not selecteed display unit is backward voltage, can electron emission, thus improve contrast and can effectively reduce and crosstalk, possess memory function simultaneously.
For making object of the present invention, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the present invention be described in further detail.
Brief description of the drawings
Fig. 1 is field emission excited gas discharge display structural representation of the present invention.
Fig. 2 is that the present invention scans and maintains the drive waveforms figure separating.
Fig. 3 is field emission excited gas discharge display drive system theory diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, the invention provides a kind of field emission excited gas discharge display, comprise
One front glass substrate 1, described front glass substrate 1 lower surface is provided with a planar anode 2, on described anode 2, is provided with fluorescent material 3; With
One rear glass substrate 8, be oppositely arranged (assembling) with described front glass substrate 1, described rear glass substrate 8 upper surface intervals and the parallel strip negative electrode 7 that is provided with, on described strip negative electrode 7, be coated with a planar insulating barrier 6, described insulating barrier 6 intervals, top and the parallel strip grid 5 that is provided with, and the setting vertical with described strip grid 7 of described strip negative electrode 5, described strip grid 7 is provided with nano material 4 with the crosspoint place of described strip negative electrode 5.
What electron emission source adopted is metal-insulator layer-nano material, it is MIN structure, wherein the metal level of electron emission source is as the negative electrode of device, nano material is as grid, the cathode grid of electron emission source regulates the launch time of controlling electronics, voltage between anode and grid strengthens the collision of electronics and gas atom, the radiation ultraviolet ray that whether is excited of decision gas atom. On grid, apply high voltage, apply low-voltage on negative electrode, negative electrode is divergent bundle under the regulation and control of grid, and anode applies high pressure, and grid applies low pressure, and display unit is the ultraviolet ray excited light-emitting phosphor of gas discharge radiation under the control of anode and grid.
Preferably, between described front glass substrate 1 and described rear glass substrate 8, be sealed with inert gas, described nano material is CNT or Graphene etc.
As shown in Figure 2, the present invention also provides a kind of driving method of described field emission excited gas discharge display,
The pulse voltage low level that anode applies represents 0V, and high level is positive voltage; The pulse voltage high level that grid applies is 0V, and low level is negative voltage; Negative electrode has three kinds of magnitudes of voltage, and high level is 0V, and low level is two kinds of different negative value voltages. On the upper/lower electrode of adopting at electron emission source and anode, apply suitable drive waveforms, by Waveform Control electron source launch energy lower than the ionization energy of gas atom but higher than the electronics of its excitation energy, when so electronics is towards anode movement, cause that the collision between gas atom does not cause gas ionization, but can produce ultraviolet ray by excited gas, then fluorescent material is by ultraviolet ray exited luminous.
Excite while demonstration, in the unit showing at needs, negative electrode applies scanning impulse, the data-signal applying with grid forms voltage difference, and not needing in the unit showing, the voltage applying between negative electrode and grid is backward voltage, can electron emission, scan synchronizing signal of rear generation; If the synchronizing signal of detecting, anode applies write pulse, and voltage difference excited gas radiation ultraviolet ray between grid, ultraviolet ray excited light-emitting phosphor;
Maintain while demonstration, negative electrode applies the negative value voltage lower than scanning voltage, the voltage difference forming with grid maintains electron emission source electron emission, voltage difference between grid and anode is not enough to remotivate gas atom and but can maintains the atom continuation radiation ultraviolet ray having excited simultaneously, reaches the object that maintains demonstration.
As shown in Figure 3, provide one drive circuit, described drive circuit comprises prime control circuit module and rear class drive system module; Display in system, after prime control circuit resume module, is delivered in rear class drive system module, thereby drives and show on display screen; Described prime control circuit module comprises video acquisition processor, Data Buffer Memory and FPGA control module, and described rear class drive system module comprises the driving of anode gray modulation, grid Data driver and negative electrode turntable driving.
Wherein, described video acquisition processor comprises video reception module, video a/d modular converter and Data Format Transform module; Video acquisition processor receiving video signals source, video reception part adopts at present popular on the market receiving interface, has VGA interface, S-VIDEO interface, DVI interface etc., coordinate the control chip of each interface to design, and correctly gather various vision signals. This part is to realize the reception of TV signal, VCD signal, DVD signal, the pal mode analog video image signals of input is sent into video a/d (analog/digital) conversion portion, the A/D that carries out video in this unit gathers, be transformed to data image signal, output to Data Format Transform part, then the resolution requirement requiring according to FED display screen, do respective handling, the data format that output FGD requires finally deposits Data Buffer Memory under the control of data buffer storage write address generator in FPGA control module unit. FPGA control module produces Data Buffer Memory, the driving of anode gray modulation, grid Data driver, negative electrode turntable driving and anode writes the control signal of synchronizing signal etc., and be sent to that corresponding Data Buffer Memory, anode gray modulation drive, the reception I/O mouth of grid Data driver and negative electrode turntable driving etc., realize the control transmission of image video signal.
It is that input data are directly modulated into the grey scale signal that pulsewidth represents that anode gray modulation drives with grid Data driver, and carries out power amplification, between them, controls work schedule by synchronizing signal. It is to adopt FPGA control technology that anode gray modulation drives with grid Data driver, the design desired control signal of HV632PG (SC, CC, LC, BL etc.). The video clock of design specialized, adopt FPGA phaselocked loop to carry out frequency division and processing, produce the required counting clock CC(4MHz of HV632PG) and shift clock SC(5MHz), other signals are generated according to row synchronizing signal etc. by FPGA respectively, adopt bus design mode to be transferred to each control signal end of every a slice HV632PG. The data-signal that the control signal of same FPGA output and its mainboard send need to be undertaken processing every disturbing by high speed photo coupling circuit, pass through again driver chip, improve load capacity, and then flow to HV632PG chip and carry out gray scale processing, HV632PG output high drive gray modulation signal loading is to show electrode, under column scan pulse control, realize acquisition of image data and show screen display at FED. The addressing Technology design of FPGA is that to utilize the row electrode of the corresponding driving of signal output institute of HV632PG chip I/O pin on strake be not according to the order of FED display screen arrange electrode, meet FED by Software for Design and show the driving address requiring, deposit the look-up table unit of fpga chip in, corresponding address is found out in the position that will show according to display screen in the time that data-signal is wanted output display in look-up table, take out data, be transported to successively more corresponding driving chip and carry out gray modulation, and then output on show electrode and show. In the present invention, single row driver element has adopted three triodes to be in series, and this driver element is withstand voltage can reach 500V.
The design philosophy of negative electrode turntable driving is to utilize existing FPGA designing technique, carries row synchronizing signal, the clock signal etc. of coming to complete the design that row is driven to the required control signal of chip in prime control circuit module. Negative electrode turntable driving is for column scan pulse signal being carried out to decoding and completing the circuit of power gain, and this circuit module is completing voltage, current amplitude and realize in amplifying the parameter matching of drive circuit and FGD display screen. The high-voltage pulse signal of scanning of its output is to deliver to the FGD display screen electrode drive that goes between accordingly to show. Negative electrode scan drive circuit unit has played the function of lining by line scan, and sets high position at a certain row of gating, and all the other each row set low position. Gating line by line, shows line by line. Realizing the code of addressing function has write by VerilogHDL language.
Signal in system is after prime control circuit resume module, by synchronizing signal control, the anode gray modulation of delivering to respectively in rear class drive system module drives and grid Data driver, under the unit effect of negative electrode scan drive circuit, thereby drives and shows on display screen. Toward transport picture data on the grid of display, carry out addressing line by line by target, apply high voltage at the grid of choosing, all the other apply low-voltage, by synchronizing signal, apply the pulse corresponding with required demonstration image on anode; Realize gray scale demonstration by pulse width or the number controlled on anode; When cathode potential is during higher than grid potential, negative electrode field emission cut-off.
Generally, the field emission of grid control cathode, grid applies the pulse choice display unit electron emission corresponding with required demonstration image on extremely, and anode applies write pulse and realizes gas discharge luminescence display. And in the present invention, the processing of vision signal process prime control circuit module, then be applied on the grid of display screen by rear class drive system module; The sweep signal that scan drive circuit produces is applied on negative electrode, carries out addressing; Negative electrode is electron emission under the regulation and control of grid, and the electronics of transmitting is the ultraviolet ray excited light-emitting phosphor of excited gas radiation under the control of anode write pulse.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; institute is understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a field emission excited gas discharge display, is characterized in that: comprise
One front glass substrate, described front glass substrate lower surface is provided with an anode, on described anode, is provided with fluorescent material; With
One rear glass substrate, be oppositely arranged with described front glass substrate, described rear glass substrate upper surface interval and the parallel strip negative electrode that is provided with, on described strip negative electrode, be coated with an insulating barrier, described insulating barrier interval, top and the parallel strip grid that is provided with, and described strip negative electrode and vertical setting of described strip grid, the crosspoint place of described strip grid and described strip negative electrode is provided with nano material;
The driving method of wherein said field emission excited gas discharge display is:
Excite while demonstration, in the unit showing at needs, negative electrode applies scanning impulse, the data-signal applying with grid forms voltage difference, and not needing in the unit showing, the voltage applying between negative electrode and grid is backward voltage, can electron emission, scan synchronizing signal of rear generation; If the synchronizing signal of detecting, anode applies write pulse, and voltage difference excited gas radiation ultraviolet ray between grid, ultraviolet ray excited light-emitting phosphor;
Maintain while demonstration, negative electrode applies the negative value voltage lower than scanning voltage, the voltage difference forming with grid maintains electron emission, and the voltage difference between grid and anode is not enough to remotivate gas atom and but can maintains the atom continuation radiation ultraviolet ray having excited simultaneously, reaches the object that maintains demonstration.
2. a kind of field emission excited gas discharge display according to claim 1, is characterized in that: between described front glass substrate and described rear glass substrate, be sealed with inert gas.
3. a kind of field emission excited gas discharge display according to claim 1, is characterized in that: described nano material is CNT or Graphene.
4. a kind of field emission excited gas discharge display according to claim 1, is characterized in that: one drive circuit is provided, and described drive circuit comprises prime control circuit module and rear class drive system module; Described prime control circuit module comprises video acquisition processor, Data Buffer Memory and FPGA control module, and described rear class drive system module comprises the driving of anode gray modulation, grid Data driver and negative electrode turntable driving.
5. a kind of field emission excited gas discharge display according to claim 4, is characterized in that: described video acquisition processor comprises video reception module, video a/d modular converter and Data Format Transform module.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598999A (en) * | 2003-08-27 | 2005-03-23 | 韩国电子通信研究院 | Field emission device |
| CN1707727A (en) * | 2004-05-22 | 2005-12-14 | 三星Sdi株式会社 | Field emission device and field emission display using the same |
| CN101625946A (en) * | 2008-07-09 | 2010-01-13 | 清华大学 | Electronic emission device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3451048B2 (en) * | 1999-11-24 | 2003-09-29 | シャープ株式会社 | Cold cathode and method of manufacturing the same |
| KR100480773B1 (en) * | 2000-01-07 | 2005-04-06 | 삼성에스디아이 주식회사 | Method for fabricating triode-structure carbon nanotube field emitter array |
| TW518632B (en) * | 2001-10-08 | 2003-01-21 | Ind Tech Res Inst | Manufacturing process of cathode plate for nano carbon tube field emission display |
| JP4219724B2 (en) * | 2003-04-08 | 2009-02-04 | 三菱電機株式会社 | Method for manufacturing cold cathode light emitting device |
| CN102339699B (en) * | 2011-09-30 | 2014-03-12 | 东南大学 | Field emission triode structure based on graphene |
| CN104769698B (en) * | 2011-12-29 | 2017-03-08 | 埃尔瓦有限公司 | The performance optimization of field emission apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1598999A (en) * | 2003-08-27 | 2005-03-23 | 韩国电子通信研究院 | Field emission device |
| CN1707727A (en) * | 2004-05-22 | 2005-12-14 | 三星Sdi株式会社 | Field emission device and field emission display using the same |
| CN101625946A (en) * | 2008-07-09 | 2010-01-13 | 清华大学 | Electronic emission device |
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