CN1260014C - Coating method for earthing anti-static coating layer of information displaying panel - Google Patents
Coating method for earthing anti-static coating layer of information displaying panel Download PDFInfo
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- CN1260014C CN1260014C CN 01124235 CN01124235A CN1260014C CN 1260014 C CN1260014 C CN 1260014C CN 01124235 CN01124235 CN 01124235 CN 01124235 A CN01124235 A CN 01124235A CN 1260014 C CN1260014 C CN 1260014C
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Abstract
The present invention relates to a coating method for making an antistatic coating layer of a display panel of an information display grounded. The coating method comprises the steps that the ineffective edge of the display panel of the information display is coated with electrically conductive material, and the coating range extends from the ineffective edge to an explosion-proof belt arranged on the lateral edge of the information display; the display panel is coated with the antistatic coating layer, and the antistatic coating layer is exactly engaged with the electrically conductive material; the antistatic coating layer is coated with an antireflection coating layer. In this way, after coating processing is completed, the antistatic coating layer can form a path with the explosion-proof belt through the electrically conductive material, and static voltage accumulated on the display panel is smoothly guided to a grounded end; thus, harmful effects caused by the static voltage to the information display are thoroughly eliminated.
Description
Technical field
The present invention relates to the manufacturing technology of information display panel, especially a kind of coating process that makes the antistatic coating layer ground connection of information display panel.
Background technology
The intensity of reflected light on the cathode ray tube (CRT) surface of general video display, the 4%-8% that is about incident light, described reverberation is for the user of long-time use, very easily cause eye fatigue and injury, and can reduce due resolution and color contrast on the video display, in addition, in the High Resolution and high image quality display (as: CRT) popularized day by day now, because its driving voltage is general all up to 25KW, very easily on display surface, form electrostatic pressure, cause that micro dust particle is adsorbed on its surface in the atmosphere, destroyed the image quality of display, and when in the low humidity zone, using this kind display, also make the user get shocked easily.So be generally and address the above problem, make video display meet relevant quality requirements, all can be on the display floater outer wall surface of cathode-ray tube, carry out anti-dazzle (Anti-Glare), antireflection (Anti-Reflection) and antistatic surface treatments such as (Anti-Static), antistatic and the reflection coating layer by coating multiple, with effective minimizing light source reflex to the harmful effect that video image was caused, and the electrostatic pressure that significantly reduces on it to be accumulated.
At present, general traditional color cathode ray tube 10, consult shown in Figure 1, mainly comprise a sealed glass body (sealed glass envelope) 12, this body 12 is provided with a display floater (faceplate) 14, pars infundibularis (intermediate funnel portion) 16 in the middle of one tube neck (neck portion) 18 and, the inner wall surface of this display floater 14 scribbles fluorescence coating (phosphor screen) 24, this fluorescence coating 24 comprises a plurality of unit and fluorescence units that can distribute fluorescence respectively, in the tube neck 18 of sealing canals of stilling 12, then be provided with a plurality of electron guns that are arranged in a linear 20, in order to produce three-color electron beam 22, described electron beam 22 is through the control of a magnetic deflection scanning yoke (magnetic deflection yoke), can be along level and vertical direction deviation, and Jiao gathers on fluorescence coating 24, the three-color electron beam 22 that is produced when this color cathode ray tube 10, when Jiao gathers respectively this unit and fluorescence unit on this display floater 14 inner wall surface, described unit will give out coloured light, to show video image on this display floater 14.
On the traditional color cathode ray tube 10 of this kind, consult shown in Figure 2, the inner wall surface of its display floater 14 is coated with a fluorescence coating 142, its outer wall surface then is coated with a coating layer 144, this coating layer 144 comprises the antistatic coating layer 146 and outer field antireflection (and/or the anti-dazzle) coating layer 148 of internal layer, this antistatic coating layer 146 also is equipped with a conductive aluminum foil 50, should be connected to earth terminal by antistatic coating layer 146 by this conductive aluminum foil 50, the electrostatic charge of being accumulated with these display floater 14 outer wall surface of effective removal; 148 of this antireflection (and/or anti-dazzle) coating layers are in order to reduce this display floater 14 outer wall surface environment reflection of light or dropping fire to external world, to make on this display floater 14 to present video image more clearly.
At present, the manufacturer of video display is after finish antistatic to these display floater 14 outer wall surface and antireflection (and/or anti-dazzle) etc. is coated with processing, consult Fig. 2 and shown in Figure 3 again, be this conductive aluminum foil to be linked two lateral margins that are connected to this display floater 14 by an adhesive tape 60 respectively, make this antistatic coating layer 146 be connected with a set explosion-proof band (tension band) 70 on these display floater 14 peripheral surface, consult shown in Figure 3, explosion-proofly be with 70 to be connected to earth terminal by this, the electrostatic charge of being accumulated with these display floater 14 outer wall surface of effective removal.General speech, the manufacturer of video display now, in order to remove the method for the electrostatic charge that these display floater 14 outer wall surface accumulate, the difference according to its coating method can generally be divided into following two kinds:
(1) wet type rubbing method: be to adopt spraying (spray) or rotary coating modes such as (spin coating), the display floater 14 of target ray tube 10 carries out antistatic and the antireflection coating, because in aforementioned coating method, coating material is with the packing of molecules form, be coated on this display floater 14, its intermolecular linkage is apart from bigger, cause between formed this antistatic coating layer and reflection coating layer, diffusion phenomena (diffusion) will take place, consult shown in Figure 4, the electroconductive molecule 51 that causes in the antistatic coating layer diffuses in this reflection coating layer and the surface, so after finishing antistatic/antireflection coating processing, the outer surface of its coating layer 52 has 10
4-10
6Ω/MM
2Conductive characteristic, so can this conductive aluminum foil 50 be connected to the outer surface of this coating layer 52 by this adhesive tape 60, to be with 70 to be connected by this conductive aluminum foil 50 and this are explosion-proof, the electrostatic charge of being accumulated with these display floater 14 outer surfaces of effective removal, however employed conductive aluminum foil 50 costs of this mode are comparatively expensive.
(2) dry type rubbing method: be to utilize sputter coating modes such as (sputter coating), the display floater 14 of target ray tube 10 carries out antistatic/antireflection coating respectively, because in the described coating method, coating material is with the atom packing form, be coated on this display floater 14, its arrangement is tightr, so can clearly distinguish this antistatic coating layer 146 and reflection coating layer 148, consult shown in Figure 5, general speech, film (as: ITO, TiO that this antistatic coating layer 146 is a tool conductive characteristic
2Material such as Ti and TiN), 148 of this reflection coating layers are a silicon dioxide film, because this silicon dioxide film 148 covers on this conductive film 146, and be a dielectric film, cause the insulating surface of this this silicon dioxide film 148 can't make this conductive aluminum foil 50 be connected with this conductive film 146, so in above-mentioned dry type rubbing method, for making this conductive aluminum foil 50 can successfully be connected on this antistatic coating layer 146, the manufacturer ASAHI GLASS COMPANY of one display floater, be after finishing antistatic to display floater and antireflection coating handles, with ultrasonic spot welding mode (sunbonder), consult shown in Figure 6, two lateral margin positions in this display floater 14, destroy the reflection coating layer 148 of this silica, and form a conductor 55 in this position, this conductive aluminum foil 50 is connected to this conductor 55 by this adhesive tape 60, make this antistatic coating layer 146 can pass through this conductor 55 and conductive aluminum foil 50 in regular turn, and explosion-proofly be with 70 to be connected with this, to remove the electrostatic charge that these display floater 14 outer wall surface are accumulated.
Because, in the processing procedure of aforementioned wet type coating, respectively this quantity for spray and uniformity antistatic and the anti-reflective coating cloth material, more wayward, so its antireflection and antistatic effect are also unstable, can't effectively promote the video signal quality of video display, and its coating material easily causes problems such as reclaiming difficulty and environmental pollution.And in the processing procedure of above-mentioned dry type coating, then that this conductive aluminum foil 50 is connected to this antistatic coating layer 146 is explosion-proof with 70 processing procedure with this, comparatively loaded down with trivial details because of it, so also not satisfactory.
Summary of the invention
Because many shortcomings of applied antistatic and antireflection coating on the aforementioned conventional video display, special the coating process that makes the antistatic coating layer ground connection of information display panel of the present invention proposed.By this method, order on information display panel, form antistatic and antireflection (and/or anti-dazzle) coating layer after, the electrostatic pressure that the surface of its antistatic coating layer is accumulated, can guide to an earth terminal smoothly, effectively remove the electrostatic charge that this display floater outer wall surface is accumulated.
Main purpose of the present invention, it is elder generation invalid edge on the display floater of an information display, be coated with an electric conductivity black wood charcoal, make its coating scope by this invalid edge, extend to the set explosion-proof band of this information display lateral margin, on this display floater, be coated with an antistatic coating layer again, this antistatic coating layer just can be connected mutually with this electric conductivity black wood charcoal, then, on this antistatic coating layer, be coated with a reflection coating layer again, so, after finishing described coating processing, this antistatic coating layer can directly pass through this electric conductivity black wood charcoal, and form path with this explosion-proof band, with the electrostatic pressure of being accumulated on this display floater, guide to an earth terminal smoothly, thoroughly eliminate electrostatic pressure to harmful effect that this video display caused.
Description of drawings
Fig. 1 is the vertical section schematic diagram of a conventional color cathode ray tube;
Fig. 2 is the partial cutaway schematic on the display floater that antistatic coating layer and reflection coating layer is applied to conventional color cathode ray tube;
Fig. 3 is the schematic perspective view of conventional color cathode ray tube;
Fig. 4 is the partial cutaway schematic of the display floater of the color cathode ray tube of traditional wet coating;
Fig. 5 is the partial cutaway schematic of the display floater of the color cathode ray tube of conventional dry coating;
Fig. 6 utilizes the partial cutaway schematic of display floater of the color cathode ray tube of conventional dry rubbing method made for ASAHI GLASS COMPANY;
Fig. 7 carries out the surface-treated partial cutaway schematic for the present invention to the display floater of color cathode ray tube;
Fig. 8 carries out the surface-treated partial cutaway schematic for the present invention to the display floater of color cathode ray tube.
The figure number explanation of accompanying drawing:
Canals of stilling ... ... 12 display floaters ... ... 14
Tube neck ... ... 18 pars infundibularises ... ... 16
Electron gun ... ... 20 fluorescence coatings ... ... 24
Antistatic coating layer ... ... 146 reflection coating layers ... ... 148
Conductive aluminum foil ... ... 50 adhesive tapes ... ... 60
Explosion-proof band ... ... 70
The specific embodiment
The present invention mainly is a kind of coating process that makes the antistatic coating layer ground connection of information display panel, especially refer to invalid edge on this information display panel (this invalid edge is meant that display floater four lateral margins are shown the position that the device housing is coated) and extend between the set explosion-proof band position of this information display lateral margin, finish conductive material coating earlier, pass through again by various surface preparations, coating one antistatic coating layer on this display floater, this antistatic coating layer just can be connected mutually with this conductive material, then, on this antistatic coating layer, be coated with a reflection coating layer again, so, after finishing described coating processing, this antistatic coating layer can directly pass through this conductive material, and form path with this explosion-proof band, by the electrostatic pressure that will be accumulated on it, guide to an earth terminal smoothly, effectively remove the electrostatic charge that this display floater outer wall surface is accumulated.In the present invention, described surface preparation can be respectively spraying process (spray), ion beam sputtering deposition method (sputter) or chemical vapor deposition method (chemical Vapor Deposition is called for short CVD) etc.
In a most preferred embodiment of the present invention, consult shown in Figure 7, this rubbing method is the invalid edge D on this display floater 14 of elder generation, be coated with this conductive material 80 (in the present invention, this conductive material 80 is an electric conductivity black wood charcoal), make its coating scope by this invalid edge D, extend to these display floater 14 lateral margins set one explosion-proofly be with 70, and explosion-proofly be with 70 to be connected with this, on this display floater 14, be coated with this antistatic coating layer 146 then, this antistatic coating layer 146 just can be connected mutually with this conductive material 80, at last, on this antistatic coating layer 146, be coated with this reflection coating layer 148 again, so, after finishing this antistatic and antireflection coating and handling, this antistatic coating layer 146 can directly pass through this conductive material 80, and explosion-proofly be with 70 to form paths with this, with the electrostatic pressure of being accumulated on the display floater 14, be directed to this smoothly by this antistatic coating layer 146 and explosion-proofly be with 70, and explosion-proofly be with 70 to be directed to an earth terminal (not shown) by this, effectively remove the electrostatic charge that these display floater 14 outer wall surface are accumulated.
In another most preferred embodiment of the present invention, consult shown in Figure 8, for avoiding when being coated with this conductive material 80, can't make its coating scope extend to set explosion-proof of these display floater 14 lateral margins and be with 70 by this invalid edge D, so can be after the coating of finishing this conductive material 80, by an adhesive tape 60, make an end of a conductive aluminum foil 50 directly be attached to the position of this conductive material 80, its in addition end then be connected to this and explosion-proofly be with 70, by this conductive aluminum foil 50, make that this conductive material 80 and this are explosion-proof is with 70 to be connected, form conducting state, then, on this display floater 14, be coated with this antistatic coating layer 146 again, this antistatic coating layer 146 just can be connected mutually with this conductive material 80, at last, on this antistatic coating layer 146, be coated with this reflection coating layer 148 again, and after finishing above-mentioned coating processing, can make the explosion-proof 70 formation paths of being with of this antistatic coating layer 146 and this, make by this conductive aluminum foil 50 electrostatic pressure of being accumulated on this display floater 14, be directed to this and explosion-proofly be with 70, explosion-proofly be with 70 to be released into an earth terminal by this again, with the electrostatic charge that these display floater 14 outer wall surface of effective removal are accumulated, thoroughly eliminate electrostatic pressure to harmful effect that this video display caused.
The above; it only is preferred embodiment of the present invention; but the interest field that the present invention advocated; be not limited to the application on the display floater of color cathode ray tube; press all this skill personages that is familiar with; according to the disclosed technology contents of the present invention, on the display floater of other video display (as: plasma display or LCD), can think easily and equivalent application, all should belong to and not break away from protection category of the present invention.
Claims (2)
1, a kind of coating process that makes the antistatic coating layer ground connection of information display panel, it is characterized in that: this method mainly is elder generation invalid edge on the display floater of an information display, be coated with an electric conductivity black wood charcoal, make its coating scope by this invalid edge, extend to the set explosion-proof band of this information display lateral margin, on this display floater, be coated with an antistatic coating layer again, this antistatic coating layer just can be connected mutually with this electric conductivity black wood charcoal, then, on this antistatic coating layer, be coated with a reflection coating layer again, make after finishing described coating processing, this antistatic coating layer can directly pass through this electric conductivity black wood charcoal, and forms path with this explosion-proof band.
2, the coating process that makes the antistatic coating layer ground connection of information display panel as claimed in claim 1, it is characterized in that: for avoiding when being coated with this electric conductivity black wood charcoal, can't make its coating scope extend to the set explosion-proof band of this display floater lateral margin by this invalid edge, can be after the coating of finishing this electric conductivity black wood charcoal, by by an adhesive tape, make an end of a conductive aluminum foil directly be attached to the position of this electric conductivity black wood charcoal, it is held in addition and then is connected to this explosion-proof band, and after finishing this antistatic and antireflection coating and handling, can make this antistatic coating layer with should explosion-proof band formation path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01124235 CN1260014C (en) | 2001-08-16 | 2001-08-16 | Coating method for earthing anti-static coating layer of information displaying panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01124235 CN1260014C (en) | 2001-08-16 | 2001-08-16 | Coating method for earthing anti-static coating layer of information displaying panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1404929A CN1404929A (en) | 2003-03-26 |
| CN1260014C true CN1260014C (en) | 2006-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01124235 Expired - Fee Related CN1260014C (en) | 2001-08-16 | 2001-08-16 | Coating method for earthing anti-static coating layer of information displaying panel |
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| CN (1) | CN1260014C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10194514B2 (en) * | 2015-11-11 | 2019-01-29 | Rockwell Automation Technologies, Inc. | Electrostatic charge grounding for human machine interface equipment |
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2001
- 2001-08-16 CN CN 01124235 patent/CN1260014C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1404929A (en) | 2003-03-26 |
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Granted publication date: 20060621 Termination date: 20130816 |