CN1139290A - Coating process of antistatic and antireflective coating for video information display panel - Google Patents
Coating process of antistatic and antireflective coating for video information display panel Download PDFInfo
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- CN1139290A CN1139290A CN 95108141 CN95108141A CN1139290A CN 1139290 A CN1139290 A CN 1139290A CN 95108141 CN95108141 CN 95108141 CN 95108141 A CN95108141 A CN 95108141A CN 1139290 A CN1139290 A CN 1139290A
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Abstract
On the display panel, a thin layer of antistatic coating containing tin dioxide is coated and heated to infiltrate in the panel so that the outer surface has high conductivity for preventing static electricity and for electromagnetic shielding via earthing. Then, one coating of high-refraction coefficient material and one coating of low-refraction coefficient material are coated successively, and the second coating has the thickness of quarter wave to suppress optical reflection.
Description
The present invention relates to the antistatic of a kind of video information display panel and anti-reflecting layer coating process, be particularly related to and be coated with thinly on the conventional video information display panel that one deck is phosphorous to be oozed tin oxide (P (Phosphor)-doped) or fluorine ooze the anti-static coating material of tin oxide compositions such as (F (Fluorine)-doped tinoxide), and by this display floater to one high temperature of heating, so that oozing tin oxide (doped tin oxide) coating material, this infiltrates in (diffuse into) this display floater, make the outer surface of this display floater have high conductivity (highlyconductive), thereafter, on the antistatic coating layer of this display floater, be coated with the antireflection material that one deck has high index of refraction and has low refraction coefficient (light refraciton) more respectively, and make thickness relationship between this second and the 3rd reflection coating layer satisfy the antireflection standard of 1/4 wavelength, to suppress the most serious situation of light reflection, make this panel possess high-caliber video information image quality and antistatic effect.
The cathode ray tube (CRT) of general information display is under high-voltage state and works, very easily on the glass matter face-plate of a cathode-ray tube, accumulate electrostatic charge, form electrostatic effect, this electrostatic effect will make very easily adsorbs dust and airborne dirt on the panels outside of this cathode ray tube, like this, the quality of this face-plate of a cathode-ray tube video image will be reduced.In addition, when the user touches the panel of this cathode ray tube, the user will produce the uncomfortable sensation that is shocked by electricity because of accumulating the discharge process of electrostatic charge on the panel.If when the discharge process of this electrostatic charge occurs in the production line operation, will have influence on operating personnel's job morale and production quality.In addition, in the out of Memory display on the employed display screen, as: plasma discharge display screen (plasma discharge screen, be called for short PDP), vacuum fluorescent display screen (vacuum florescent screen) and gas panel (gas dischargescreen) etc. are also just like preceding described problem.
On the display screen of general information display, not only, and, cause the video image quality that has reduced this conventional information display floater significantly because this panel is easy to cause the reflection of light because the non-conductive characteristic of its glass matter panel easily causes electrostatic charges accumulatedly.For many years, though the researcher once researched and developed out some solutions at this point, still can't effectively improve these defectives.Traditional anti-static coating material is mainly semiconductor type coating material (as: antimony oozes tin oxide antimony doped tin oxide), a water and an organic solvent (organicsolvent, as ethanol ethanol or isopropyl alcohol isopropanol) mix, yet, unfortunately, be coated with the made information display of this kind anti-static coating material, but face many problems during fabrication, mainly due to this kind anti-static coating material for the dirt on the panel of information display unit (and when cleaning this panel residual brush body dirt) sensitivity as dust, very easily adsorb such dirt, for example, when making and assembling this panel of information display unit, though this panel cleans, the still frequent remaining greasy dirt washmarking (water mark) that has on this panel.Remain in dirt on this panel of information display unit (and when cleaning this panel residual brush body dirt), will reduce the video image quality of this panel as greasy dirt, washmarking, dust.In addition, because the formed coating layer of traditional anti-reflecting layer coating process generally all is porous and comparatively fragile applying structure, so, the mechanical wiping when frequent wiping and manufacturing, very easily make this reflection coating layer destroyed, and then make the antistatic coating layer of its internal layer also therefore destroyed.
In view of accumulating electrostatic charge on the aforementioned conventional information display display screen panel, very easily after cleaning, still frequent residual dirt (and when cleaning this panel residual brush body dirt) as greasy dirt, washmarking, dust, reduce the video image quality of this panel, and in design and making, derive problems, the present invention has been proposed.
The objective of the invention is to propose the coating process of the antistatic and anti-reflecting layer of a kind of video information display pannel, easily adsorb dirt and easy ruined problem to solve traditional antistatic coating layer.
Another object of the present invention is to propose the coating process of the antistatic and anti-reflecting layer of a kind of video information display pannel,, improve the quality of shown image to eliminate catoptrical effect.
For achieving the above object, the antistatic and anti-reflecting layer coating process of a kind of video information display panel of the present invention comprises step: be coated with earlier the first antistatic coating layer on video information display panel thinly; Secondly, this display floater is heated to a suitable high temperature, the coating material of this first antistatic coating layer is infiltrated in this display floater, make the outer surface of this display floater have high conductivity; At last, coating second reflection coating layer on this first antistatic coating layer.
Fig. 1 is the vertical section schematic diagram that according to the present invention the antistatic of video information display panel and anti-reflecting layer coating process is applied on a kind of face-plate of a cathode-ray tube;
Fig. 2 is the partial cutaway schematic that according to the present invention the antistatic of video information display panel and anti-reflecting layer coating process is applied on a kind of smooth display floater of information display;
Fig. 3 is the steps flow chart schematic diagram that according to the present invention the antistatic of video information display panel and anti-reflecting layer coating process is applied on a kind of information display panel.
Figure 1 shows that a kind of cathode ray tube, this cathode ray tube 10 mainly comprises a sealed glass body 12, this body 12 is provided with a front panel, or title display screen 14, pars infundibularis 16 in the middle of one tube neck 18 and, the inner surface of this face glass 14 is coated with fluorescence coating 24, but this fluorescence coating 24 comprises the fluorescence picture point of a plurality of difference emitting fluorescences, when the color electric bundle focuses on fluorescence picture point on these face glass 14 inner surfaces, this picture point will have been sent coloured light, with display video frame on this display screen 14, in the tube neck 18 of the seal glass body 12 of this cathode ray tube 10, be provided with a plurality of electron guns 20 that are linear array, to produce a plurality of electron beams 22 that focus on these face glass 12 fluorescence coatings 24, this electron beam 22 along level and vertical direction deflection, and focuses on this fluorescence coating 24 behind magnetic deflection coil (magnetic deflection yoke).
Figure 2 shows that the partial cutaway schematic on the information display display floater, the section of this glass display panel 40 is planar-shaped (or can be arc surfaced), the fluorescence coating 42 that is coated with on the inner surface of this glass display panel 40, for a plurality of each intervals and be point-like (dots) or fluorescence coating that banded (stripes) distributes, then be coated with the antistatic and reflection coating layer 44 of multilayer on the outer surface of this glass display panel 40.Antistatic and reflection coating layer of the present invention is not limited to be applied on the display screen of cathode ray tube, also can be applied in the out of Memory display on the employed display screen, as: field effect emission display screen (fieldemission display, between claim FED), LCDs (liquid crystaldisplay, be called for short LCD), plasma discharge display screen (plasma dischargescreen is called for short PDP), on the outer surface of vacuum fluorescent display screen (vacuum florescent screen) and gas panel (gas discharge screen) etc.Antistatic and the reflection coating layer 44 of this multilayer comprises the first antistatic coating layer 46 of an internal layer, this coating layer 46 mainly is to be heated to Celsius 500～600 when spending at this glass display panel 40, to comprise phosphorus oozes tin oxide (coating material that P (Phosphor)-doped) or fluorine ooze tin oxide compositions such as (F (Fluorine)-doped tin oxide) directly is coated on the outer surface of this glass display panel 40, form the antistatic coating layer 46 of skim, and heat the antistatic coating layer 46 of this glass display panel 40 and outer surface thereof with the temperature of 500～600 degree Celsius, this anti-static coating material is infiltrated through in the outer surface of this glass display panel 40, form the antistatic permeable formation 46a of skim (as shown in phantom in Figure 2), the thickness of this permeable formation 46a is about 0.5～1 μ m, also have antistatic property, the electrical conductivity of these glass display panel 40 outer surfaces through permeating can be up to being about 10～10
3Ohm-cm on it and be equipped with a conducting element 52, is connected to earth terminal by this conducting element with this glass display panel 40, makes this glass display panel 40 have the characteristic of antistatic and electromagnetic shielding.
In addition; the present invention makes this glass display panel 40 have the characteristic of antireflection protection simultaneously; antistatic and the reflection coating layer 44 of this multilayer also comprises second reflection coating layer 48 in an intermediate layer; this coating layer 48 is mainly and will comprises as tin oxide (tin oxide); tantalum stannum oxide (tantalum oxide); titanium (titanium); antimony oozes tin oxide (antimony-doped tin oxide) etc. and has high index of refraction (light refraction; as: antireflection material 1.8～2.2); directly coat on first antistatic coating layer 46 outer surfaces of this internal layer; form second reflection coating layer 48 in this intermediate layer; the thickness of this second reflection coating layer 48 is main according to deciding suppressing the ray refraction rate; for example; for the light that will make wavelength 550nm produces minimal reflection; the thickness of this second reflection coating layer 48 is about 1/4 of this optical wavelength, or is about 137～138nm.
In addition; the present invention is for strengthening the antireflection protective feature of this glass display panel 40; antistatic and the reflection coating layer 44 of this multilayer also comprises outer field the 3rd reflection coating layer 50; this coating layer 50 is mainly and will has low refraction coefficient (light refraction; as: antireflection material 1.2～1.45); as silica (silicon oxide); magnesium fluoride (mag-nesium fluoride) and other antireflecting optics coating material etc.; directly be coated on these second antistatic coating layer 48 outer surfaces; form this outer field the 3rd reflection coating layer 50; the thickness of the 3rd reflection coating layer 50 mainly is that foundation is decided suppressing the ray refraction rate, and its thickness is about will suppress 1/4 of wavelength of light.
Another embodiment of the present invention, be to omit aforementioned this outer field the 3rd reflection coating layer 50, the meaning i.e. antistatic and reflection coating layer 44 of this multilayer only comprises the first antistatic coating layer 46 of an internal layer and second reflection coating layer 48 in intermediate layer, this first antistatic coating layer 46 mainly comprises phosphorus and oozes that (P (Phosphor)-doped) tin oxide or fluorine ooze the coating material of tin oxide compositions such as (F (Fluo-rine)-doped tin oxide), and this material must have the antireflective properties greater than 1.8 refraction coefficient, as silica (silicon oxide), magnesium fluoride (magnesium fluoride) and other antireflective optical coating material etc.
Shown in Figure 3, for the present invention is antistatic and reflection coating layer are applied to operation process chart on the glass matter display floater, the first step 58 of this coating operation, be to be coated with thinly on video information display panel earlier that one deck is phosphorous and to ooze that (P (Phosphor)-doped) tin oxide or fluorine ooze the antistatic coating layer of tin oxide compositions such as (F (Fluorine)-doped tin oxide), and the thickness of this antistatic coating layer is the best with 0.3 μ m.Second step 60, be when this antistatic coating layer of coating, this display floater is heated to the high temperature of 500～600 degree Celsius approximately, described tin oxide (the doped tin oxide) coating material that oozes can be penetrated in (diffuse into) this display floater, make the outer surface tool high conductivity (highly conductive) of this display floater, at this moment, again with the edge ground connection of this display floater, can make it have the characteristic of antistatic and electromagnetic shielding.In the third step 62 of this coating operation, with one embodiment of the invention is example, be on the antistatic coating layer 46 of this display floater, to be coated with one deck again to have the low refraction coefficient antireflection material of (being about 1.2～1.4), as silica (silicon oxide), magnesium fluoride (magnesium fluoride) etc., form second reflection coating layer 48, this moment, the coating material of this first antistatic coating layer 46 must have antireflective properties greater than 1.8 refraction coefficient, and the thickness of this second reflection coating layer 48 need satisfy the antireflection standard of 1/4 wavelength.To suppress the most serious situation of light reflection, make this panel possess high-caliber video image quality and antistatic effect.
In another embodiment of the present invention, the third step 64 of this coating operation, be on the antistatic coating layer of the ground floor of this display floater, to be coated with one deck again to have the high index of refraction antireflection material of (being about 1.8～2.2), as: tin oxide (tin oxide), tantalum oxide (tantalum oxide), titanium (titanium), antimony oozes tin oxide (antimony-dopedtin oxide) etc., form second reflection coating layer 48, the final step 66 of this coating operation, be that coating one deck has the low refraction coefficient antireflection material of (being about 1.2～1.45) on second reflection coating layer 48 of this display floater, as: silica (siliconoxide), magnesium fluoride (magnesium fluoride) etc., form the 3rd reflection coating layer 50, the essential antireflection standard that satisfies 1/4 wavelength of thickness relationship between this second and the 3rd reflection coating layer, to suppress the most serious situation of light reflection, make this panel possess high-caliber video image quality and antistatic effect.
This anti-static coating material of the present invention is behind the outer surface that infiltrates through this glass display panel 40, the antistatic permeable formation 46a (as shown in phantom in Figure 2) of skim will be formed, the thickness of this permeable formation 46a is 0.5～1 μ m, have antistatic property, and the electrical conductivity (conductivity) of these glass display panel 40 outer surfaces through permeating is because can be up to 10～10
3Ohm-cm; so not only provide good antistatic protection for this glass display panel 40; and provide static and electromagnetic shielding (electrostatic and electromagnetic shielding) protection; in addition; this antistatic permeable formation 46a infiltrates through the osmosis (penetration) of these glass display panel 40 outer surfaces; also make this antistatic coating layer when being cleared up, have higher anti-scratch anti-wear (the scratchand wear resistance) characteristic that undermines in the wiping mode.After reflection coating layer of the present invention is coated on the display floater, owing to satisfy 1/4 wavelength antireflection standard, so have anti-reflection effect preferably.
The above only is preferred embodiment of the present invention, claim scope proposed by the invention; be not limited thereto, allly be familiar with the person skilled in art, according to the disclosed technology contents of the present invention; other equivalence that can expect easily changes, and all should belong to and not break away from protection category of the present invention.
Claims (11)
1, a kind of antistatic and anti-reflecting layer coating process of video information display panel comprises step:
On video information display panel, be coated with earlier the first antistatic coating layer thinly;
Secondly, this display floater is heated to a suitable high temperature, the coating material of this first antistatic coating layer is infiltrated in this display floater, make the outer surface of this display floater have high conductivity;
At last, coating second reflection coating layer on this first antistatic coating layer.
2, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 1 is characterized in that, the described first antistatic coating layer comprises the anti-static coating material that oozes tin oxide (doped tin oxide) composition.
3, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 2, it is characterized in that the described first antistatic coating layer comprises phosphorus and oozes tin oxide (P (Phosphor)-doped) or fluorine ooze the anti-static coating material of tin oxide compositions such as (F (Fluorine)-doped tin oxide).
4, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 3 is characterized in that, the described display floater and the described first antistatic coating layer are heated to the above high temperature of 500 degree Celsius approximately.
5, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 1 is characterized in that, the thickness of described second reflection coating layer is about 1/4 value that will suppress wavelength of light.
6, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 5 is characterized in that, described second reflection coating layer has about 1.8～2.2 high index of refraction.
7, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 6, it is characterized in that described second reflection coating layer comprises tin oxide, ooze tin oxide (tin oxide, doped tin oxide), tantalum stannum oxide (tantalumoxide), titanium (titanium) or antimony oozes tin oxide or arsenic oozes the antireflection material that tin oxide (antimony-or arsenic-doped tin oxide) etc. has high index of refraction.
8, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 6 is characterized in that, described method also is included in the step of coating the 3rd reflection coating layer on second reflection coating layer of described display floater.
9, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 8 is characterized in that, described the 3rd reflection coating layer has about 1.2～1.45 low refraction coefficient.
10, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 9, it is characterized in that described the 3rd reflection coating layer comprises the anti-reflective coating cloth material that silica (silicon oxide), magnesium fluoride (magnesium fluoride) etc. have low refraction coefficient.
11, the antistatic and anti-reflecting layer coating process of a kind of video information display panel according to claim 10 is characterized in that, the thickness of described the 3rd reflection coating layer is about 1/4 value that will suppress wavelength of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95108141A CN1061777C (en) | 1995-06-29 | 1995-06-29 | Coating process of antistatic and antireflective coating for video information display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95108141A CN1061777C (en) | 1995-06-29 | 1995-06-29 | Coating process of antistatic and antireflective coating for video information display panel |
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| Publication Number | Publication Date |
|---|---|
| CN1139290A true CN1139290A (en) | 1997-01-01 |
| CN1061777C CN1061777C (en) | 2001-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN95108141A Expired - Fee Related CN1061777C (en) | 1995-06-29 | 1995-06-29 | Coating process of antistatic and antireflective coating for video information display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403134C (en) * | 2002-08-02 | 2008-07-16 | 奇美电子股份有限公司 | Liquid-crystal display devices |
| CN106045331A (en) * | 2016-07-22 | 2016-10-26 | 苏州奥科飞光电科技有限公司 | Glass with sunlight readability and electromagnetic shielding property |
| CN108205167A (en) * | 2017-12-18 | 2018-06-26 | 信利光电股份有限公司 | A kind of method for improving electronic product cover board colour stability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69309814T2 (en) * | 1992-08-31 | 1997-10-16 | Sumitomo Cement Co | Antireflective and antistatic clothing layer for an electron beam tube |
-
1995
- 1995-06-29 CN CN95108141A patent/CN1061777C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403134C (en) * | 2002-08-02 | 2008-07-16 | 奇美电子股份有限公司 | Liquid-crystal display devices |
| CN106045331A (en) * | 2016-07-22 | 2016-10-26 | 苏州奥科飞光电科技有限公司 | Glass with sunlight readability and electromagnetic shielding property |
| CN108205167A (en) * | 2017-12-18 | 2018-06-26 | 信利光电股份有限公司 | A kind of method for improving electronic product cover board colour stability |
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| Publication number | Publication date |
|---|---|
| CN1061777C (en) | 2001-02-07 |
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Assignee: CPT (Fuzhou) Co., Ltd. Assignor: CPT (Bermuda) Co., Ltd. Contract fulfillment period: In October 31, 2007, 5 years Contract record no.: 200210156 Denomination of invention: Antistatic and antireflective coating method for video information display panel Granted publication date: 20010207 License type: Jiao Cha Record date: 20021231 |
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Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.10.31, 5 YEARS Name of requester: CHUNGHWA PICTURE TUBES (FUZHOU) CO., LTD. Effective date: 20021231 |
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Granted publication date: 20010207 Termination date: 20100629 |