CN101556894B - Field emission display module for super-large spliced display screen and preparation method thereof - Google Patents
Field emission display module for super-large spliced display screen and preparation method thereof Download PDFInfo
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- CN101556894B CN101556894B CN2009100509716A CN200910050971A CN101556894B CN 101556894 B CN101556894 B CN 101556894B CN 2009100509716 A CN2009100509716 A CN 2009100509716A CN 200910050971 A CN200910050971 A CN 200910050971A CN 101556894 B CN101556894 B CN 101556894B
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Abstract
The invention relates to the technical field of field emission display, in particular to a field emission display module for a super-large spliced display screen and a preparation method thereof. The field emission display module comprises an anode glass substrate, a cathode glass substrate, sealing edges, fluorescence powder, isolators and a cathode transmitter, and is characterized in that the anode glass substrate and the cathode glass substrate are arranged in parallel up and down; the isolators which are arranged in grid shape are arranged between the anode glass substrate and the cathodeglass substrate; and sealing edges with width of 1/2 pixel space are reserved on the left side edge and the right side edge of the anode glass substrate and the cathode glass substrate. Compared with the prior art, the preparation process is simpler than LED by adopting a thick film process with low cost, the device follows the process of a vacuum fluorescent display tube with investment and manu facturing cost far lower than the LED; and the spliced large screen based on the field emission display unit module has the advantages of low manufacture cost, high brightness, good stability, long service life, low power consumption, high response speed, full color display, good compatibility to environment and the like.
Description
[technical field]
The present invention relates to field emission Display Technique field, relate in particular to field emission display module of a kind of super-large spliced display screen and preparation method thereof.
[background technology]
Along with popularizing and the quickening of IT application process of network, super large, true to nature, multi-functionally the common pursuits of people have been become to multimedia display terminal, realize that jumbotron shows, be that size is more than 100 inches, general by video wall, projection, three kinds of forms of LED, wherein, the greatest drawback of video wall is to be formed by a plurality of television splicings, and splicing line can become complete picture segmentation how much piece; And projection can only be used for indoor and can not be under natural daylight normally use.
The main product of realizing large scale display at present is LED, it has been widely used in the information display screen at airport, harbour, station, big assembly, physical culture and variety show net cast and information show, civil and military Dispatch and Command Center information shows, fields such as stock exchange, postal service, telecommunications, commerce, exhibition and advertising message demonstration.Though domestic enterprise has almost reached absolutely in the occupation rate of market of China LED large-screen, but the important materials of full-color screen: blue light and pure green light LED be dependence on import almost completely, backwardness technically makes domestic large-screen market be in a kind of more passive status always, hold at high price, seriously limited the development in domestic large-screen market.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, utilize the principle of field emission, promptly pass through at cold-cathode material, add that as surfaces such as CNT (carbon nano-tube), zinc oxide nano fiber, silicon Nano pointed cones a highfield makes electronics generation tunnelling emission back impact fluorescence powder luminous, and employing is less than the sealing-in limit of 1/2 pixel, contact conductor is walked the structure that the side lead-in wire back of the body is drawn simultaneously, realizes the seamless assembly knot of module, and a kind of field emission display module of design.
For achieving the above object, the present invention proposes a kind of field emission display module of super-large spliced display screen, comprise the anode glass substrate, cathode glass substrate, the sealing-in limit, fluorescent material, separaant, cathode emitter, it is characterized in that: anode glass substrate and cathode glass substrate are up and down and are arranged in parallel, be provided with between anode glass substrate and the cathode glass substrate and be the separaant that lattice-shaped is arranged, reserve the sealing-in limit of width 1/2 pel spacing at the edge, the left and right sides of anode glass substrate and cathode glass substrate, lower surface at the anode glass substrate is provided with the strip anode electrode, be provided with phosphor powder layer at strip anode electrode lower surface, both sides are provided with the anode-side lead-in wire before and after the anode glass substrate at place, corresponding strip anode electrode two ends, be provided with the corresponding strip phosphor powder layer of strip cathode electrode at the cathode glass substrate upper surface, be covered with one deck cold cathode emitter in the strip cathode electrode surface, be provided with back electrode at the cathode glass substrate back side, back electrode adopts the cathode side lead-in wire to be connected with the two ends of strip cathode electrode, and described cathode glass substrate is provided with a steam vent.
A kind of preparation method of field emission display module of super-large spliced display screen, it is characterized in that comprising following technological process: negative electrode preparation, anode preparation, anode and cathode encapsulation, described negative electrode preparation comprises following technology: (1) cathode glass substrate is prepared: the cathode glass substrate cutting, the side polishing, the middle steam vent of reserving cleans; (2) cathode electrode and back electrode preparation: adopt printing or evaporation or sputtering method to prepare metal or conductive oxide film at the cathode glass substrate tow sides, adopt lithography corrosion technology to make cathode electrode and back electrode graphical again; (3) cathode electrode and back electrode line: adopt spraying method to spray electrocondution slurry and go between, and make cathode electrode and back electrode conducting as cathode side in the zone of corresponding cathode electrode in a side of cathode glass substrate and back electrode; (5) cold cathode emitter preparation: adopt growth or method of printing on cathode electrode, to prepare the cold cathode emitter; Described anode preparation comprises following technology: (1) anode glass substrate is prepared: the anode glass substrate cut, and the side polishing is cleaned; (2) transparent anode electrode prepares: adopt vacuum moulding machine such as PVD, CVD, or adopt the thin film-forming method of silk screen printing, prepare the transparent conductive film layer at the anode glass upper surface of base plate, adopt lithography corrosion technology, make anode electrode graphical; (3) anode electrode side is drawn: adopt spraying method to spray electrocondution slurry in the zone of the corresponding anode electrode in a side of anode glass substrate and go between as anode-side, anode electrode is drawn by the anode glass substrate side surfaces; (4) phosphor anode preparation: adopt printing or electrophoresis method that fluorescent material is transferred on the transparent anode electrode; Described anode and cathode is encapsulated as: (1) will have the anode glass edge precoating glass powder with low melting point slurry of above-mentioned preparation; (2) glass powder with low melting point slurry pre-burning; (3) separaant is placed: adopt silicon dioxide bead that the automatically dropping glue machine places 100 μ m (this parameter can be provided with a scope) on anode substrate as separaant; (4) anode and cathode glass assembling sintering: after anode and cathode glass assembled, under nitrogen protection with 450 ℃ of high temperature sintering 30min; (6) device exhaust, sealed-off:, adopt the vacuum exhaust platform to be vented to 5 * 10 by the steam vent of the basic glass substrate of the moon
-4Pa to 1 * 10
-5Pa sealed-off and activated degasser; (7) anode-side lead-in wire and cathode glass substrate back electrode line: adopt spraying process to spray the silver slurry once more in cathode and anode glass substrate side lead-in wire zone, anode ITO electrode is communicated with back electrode, and the side lead-in wire that negative electrode and anode are drawn by the side is all assembled at the back side of cathode glass substrate regional as signal of telecommunication introducing.
Described metal is Ag or Al or Cu or Cr or Ni, or adopts conductive oxide ZnO:Al or ITO or SnO
2
Described electrocondution slurry is silver slurry or electrically conductive graphite slurry.
Adopt growth or method of printing on cathode electrode, to prepare the cold cathode emitter, be to adopt the method for printing preparation on cathode electrode in carbon nano-tube slurry or zinc oxide nano fiber, or the method for carbon nano-tube slurry or zinc oxide nano fiber or silicon Nano pointed cone employing oriented growth is prepared on cathode electrode.
The aperture of described steam vent is less than pel spacing.
The present invention compares with prior art, and preparation technology is simpler than LED, can adopt thick-film technique preparation cheaply, device is continued to use the technology of vaccum fluorescent tube (VFD), investment and production cost will be far below LED, and by conservative estimation, the price of large screen display is about 40% of LED large-screen; Based on the splicing large screen of field emission display unit module have that cost of manufacture is low, brightness is high, good stability, the life-span is long, low in energy consumption, response speed is fast, full-color demonstration and to advantage such as the compatibility of environment is good, possess potentiality fully with the LED challenge, the field emission display cell module that can prepare all size size, and be used to realize the mosaic display screen of size arbitrarily, be a kind of very promising large scale display new technology.
[description of drawings]
Fig. 1 structural representation of the present invention.
Fig. 2 is the front schematic view of negative electrode in the embodiment of the invention.
Fig. 3 is the schematic rear view of negative electrode in the embodiment of the invention.
Fig. 4 is the front schematic view of anode in the embodiment of the invention.
Fig. 5 is preparation technology's flow chart of the present invention.
Referring to accompanying drawing 1-Fig. 4,2 is the strip cathode electrode; 3 is steam vent; 4 are the cathode side lead-in wire; 5 are back of the body lead-in wire; 6 is the strip anode electrode, is transparence; 7 is the anode glass substrate; 8 is cathode glass substrate; 9 are the sealing-in limit; 10 is phosphor powder layer; 11 is separaant; 12 is the cold cathode emitter; 41 are the anode-side lead-in wire.
[specific embodiment]
The invention will be further described below in conjunction with example, do not limit content of the present invention.
Design 16 * 16 single character display modules, and can be used for the large-screen splicing demonstration; Glass substrate size 96mm * 96mm, single Pixel Dimensions 4mm * 4mm, pel spacing 2mm reserves sealing-in limit size 1mm; Adopt full thick-film technique preparation, cathode material adopts carbon nano-tube, and concrete processing step is as follows:
1, cathode base glass-cutting; Glass edge-grinding machine polishing, chamfering are adopted in the side; Center of glass is beaten the hole of 2mm diameter as steam vent; Acetone, alcohol, deionized water ultrasonic cleaning;
2, the silver of printed patternization slurry conductive layer with 200 ℃, is dried 10min as cathode electrode on cathode glass substrate;
3, at the patterned silver slurry of cathode glass substrate back up back electrode, with 200 ℃ of oven dry 10min;
4, adopt spraying process to spray silver-colored slurry everywhere, cathode conductive layer is communicated with, with back electrode with 530 ℃ of high temperature sintering 20min at cathode glass substrate side connection silver slurry conductive layer and silver slurry back electrode;
5, cathode electrode surface printed carbon nanotube slurry is with 120 ℃ of oven dry 20min, again with 350 ℃ of sintering 20min;
6, anode ito glass cutting; Glass edge-grinding machine polishing, chamfering are adopted in the side; Acetone, alcohol, deionized water ultrasonic cleaning;
7, photoetching process realizes the ITO electrode patternization;
8, adopt spraying process at the corresponding ITO electrode zone spraying of anode glass substrate side surfaces silver slurry, make anode ITO electrode cause the side, and with 450 ℃ of sintering 20min;
9, anode ITO conductive layer surface printing fluorescent powder paste material, and with 120 ℃ of oven dry 20min;
10, anode adopts the automatically dropping glue machine to be coated with the glass powder with low melting point slurry in reservation sealing-in edge regions;
11, the anode glass powder with low melting point is with 450 ℃ of pre-burning 20min;
12, adopt silicon dioxide bead that the automatically dropping glue machine places 100 μ m on anode substrate as separaant;
13, cathode base and anode substrate assembling is under nitrogen protection, with 450 ℃ of high temperature sintering 30min;
14, adopt the vacuum exhaust platform, the steam vent of reserving by cathode glass substrate is vented to 5 * 10
-5About Pa, sealed-off and activated degasser then.
15, adopt spraying process at the zone of cathode and anode glass substrate side counter electrode spraying silver slurry, anode ITO electrode is communicated with back electrode, and with 300 ℃ of sintering 30min, just obtain being used for the field emission display module of super-large spliced display screen, then according to splicing design needs, the sealing-in limit of reserving by module edge is spliced into 16 * 16 large-screen.
The field emission display module is the large-screen splicing components and parts of a kind of desirable alternative LED, because its principle of luminosity and cathode-ray tube CRT are just the same, be understood that therefore it has the display quality of high brightness, high-contrast, high-resolution, pure and beautiful the bests such as color reproduction; The cold cathode emission that is otherwise known as of field emission does not simultaneously have thermal dissipation, electromagnetic-radiation-free, energy conversion efficiency height, can realize panelized, is a kind of desirable flat-panel display device.
Claims (6)
1. the field emission display module of a super-large spliced display screen, comprise the anode glass substrate, cathode glass substrate, the sealing-in limit, fluorescent material, separaant, cathode emitter, it is characterized in that: anode glass substrate (7) and cathode glass substrate (8) are up and down and are arranged in parallel, be provided with between anode glass substrate (7) and the cathode glass substrate (8) and be the separaant (11) that lattice-shaped is arranged, reserve the sealing-in limit (9) of width 1/2 pel spacing at the anode glass substrate (7) and the edge, the left and right sides of cathode glass substrate (8), lower surface at anode glass substrate (7) is provided with strip anode electrode (6), be provided with phosphor powder layer (10) at strip anode electrode (6) lower surface, both sides are provided with anode-side lead-in wire (41) before and after the anode glass substrate at place, corresponding strip anode electrode two ends, be provided with the corresponding strip phosphor powder layer of strip cathode electrode (2) (10) at cathode glass substrate (8) upper surface, be covered with one deck cold cathode emitter (12) on strip cathode electrode (2) surface, be provided with back electrode (5) at cathode glass substrate (8) back side, back electrode (5) adopts cathode side lead-in wire (4) to be connected with the two ends of strip cathode electrode (2), and described cathode glass substrate (8) is provided with a steam vent (3).
2. the preparation method of the field emission display module of a super-large spliced display screen, it is characterized in that comprising following technological process: negative electrode preparation, anode preparation, anode and cathode encapsulation, described negative electrode preparation comprises following technology: (1) cathode glass substrate is prepared: the cathode glass substrate cutting, the side polishing, the middle steam vent of reserving cleans; (2) cathode electrode and back electrode preparation: adopt printing or evaporation or sputtering method to prepare metal or conductive oxide film at the cathode glass substrate tow sides, adopt the photoetching corrosion method to make cathode electrode and back electrode graphical again; (3) cathode electrode and back electrode line: adopt spraying method to spray electrocondution slurry and go between, and make cathode electrode and back electrode conducting as cathode side in the zone of corresponding cathode electrode in a side of cathode glass substrate and back electrode; (5) cold cathode emitter preparation: adopt growth or method of printing on cathode electrode, to prepare the cold cathode emitter; Described anode preparation comprises following technology: (1) anode glass substrate is prepared: the anode glass substrate cut, and the side polishing is cleaned; (2) transparent anode electrode prepares: adopt the thin film-forming method of vacuum moulding machine or silk screen printing, prepare the transparent conductive film layer at the anode glass upper surface of base plate, adopt lithography corrosion technology, make anode electrode graphical; (3) anode electrode side is drawn: adopt spraying method to spray electrocondution slurry in the zone of the corresponding anode electrode in a side of anode glass substrate and go between as anode-side, anode electrode is drawn by the anode glass substrate side surfaces; (4) phosphor anode preparation: adopt printing or electrophoresis method that fluorescent material is transferred on the transparent anode electrode; Described anode and cathode is encapsulated as: (1) will be by the anode glass edge precoating glass powder with low melting point slurry of above-mentioned preparation; (2) glass powder with low melting point slurry pre-burning; (3) separaant is placed: adopt silicon dioxide bead that the automatically dropping glue machine places 50-200 μ m on anode substrate as separaant; (4) anode and cathode glass assembling sintering: after anode and cathode glass assembled, under nitrogen protection with 450 ℃ of high temperature sinterings 30 minutes; (6) device exhaust, sealed-off:, adopt the vacuum exhaust platform to be vented to 5 * 10 by the steam vent of the basic glass substrate of the moon
-4Pa～1 * 10
-5Pa, sealed-off and activated degasser; (7) anode-side lead-in wire and cathode glass substrate back electrode line: adopt spraying process to spray the silver slurry once more in cathode and anode glass substrate side lead-in wire zone, anode ITO electrode is communicated with back electrode, and the side lead-in wire that negative electrode and anode are drawn by the side is all assembled at the back side of cathode glass substrate regional as signal of telecommunication introducing.
3. the preparation method of the field emission display module of a kind of super-large spliced display screen as claimed in claim 2, it is characterized in that: described metal is Ag or Al or Cu or Cr or Ni, or adopts conductive oxide ZnO:Al or ITO or SnO
2
4. the preparation method of the field emission display module of a kind of super-large spliced display screen as claimed in claim 2 is characterized in that: described electrocondution slurry is silver slurry or electrically conductive graphite slurry.
5. the preparation method of the field emission display module of a kind of super-large spliced display screen as claimed in claim 2, it is characterized in that: adopt growth or method of printing on cathode electrode, to prepare the cold cathode emitter, be to adopt the method for printing preparation on cathode electrode in carbon nano-tube slurry or zinc oxide nano fiber, or with carbon nano-tube slurry or zinc oxide nano fiber or silicon Nano pointed cone, the method preparation of adopting oriented growth is on cathode electrode.
6. as the field emission display module of a kind of super-large spliced display screen as described in the claim 2, it is characterized in that: the aperture of described steam vent is less than pel spacing.
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| CN2009100509716A CN101556894B (en) | 2009-05-11 | 2009-05-11 | Field emission display module for super-large spliced display screen and preparation method thereof |
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|---|---|---|---|
| CN2009100509716A CN101556894B (en) | 2009-05-11 | 2009-05-11 | Field emission display module for super-large spliced display screen and preparation method thereof |
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| CN101556894A CN101556894A (en) | 2009-10-14 |
| CN101556894B true CN101556894B (en) | 2011-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680337A (en) * | 2013-11-15 | 2014-03-26 | 北京维信诺科技有限公司 | PMOLED screen splicing structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10439106B2 (en) | 2015-06-30 | 2019-10-08 | International Business Machines Corporation | Light emitting diode with ZnO emitter |
| CN105554933A (en) * | 2016-02-04 | 2016-05-04 | 重庆墨希科技有限公司 | Flexible graphene cold light board |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291353A (en) * | 1998-02-17 | 2001-04-11 | 萨尔诺夫公司 | Tiled electronic display structure |
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2009
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291353A (en) * | 1998-02-17 | 2001-04-11 | 萨尔诺夫公司 | Tiled electronic display structure |
Non-Patent Citations (4)
| Title |
|---|
| .2009,第15卷(第1期), * |
| JOURNAL OF FUNCTIONAL MATERIALS AND DEVICES> * |
| LIN Li-feng,et al..Fabrication of diode-type field emission display module with carbon nanotube cathode.< * |
| LIN Li-feng,et al..Fabrication of diode-type field emission display module with carbon nanotube cathode.<JOURNAL OF FUNCTIONAL MATERIALS AND DEVICES>.2009,第15卷(第1期), |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680337A (en) * | 2013-11-15 | 2014-03-26 | 北京维信诺科技有限公司 | PMOLED screen splicing structure |
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Effective date of registration: 20170725 Address after: 200062 science building, No. 3663, Putuo District, Shanghai, Zhongshan North Road A607 Patentee after: Najing Science & Technology Co., Ltd., Shanghai Address before: 200062 Zhongshan North Road, Shanghai, No. 3663 Co-patentee before: Najing Science & Technology Co., Ltd., Shanghai Patentee before: East China Normal University |
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Granted publication date: 20110727 Termination date: 20210511 |