CN105242432A - Touch-control display device and manufacture method thereof - Google Patents
Touch-control display device and manufacture method thereof Download PDFInfo
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- CN105242432A CN105242432A CN201510688523.4A CN201510688523A CN105242432A CN 105242432 A CN105242432 A CN 105242432A CN 201510688523 A CN201510688523 A CN 201510688523A CN 105242432 A CN105242432 A CN 105242432A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention relates to a touch-control display device and a manufacture method thereof. A touch-control induction layer is formed on the surface of a thin film transistor substrate. A high-resistive layer is formed on the surface of a color filter substrate and is electrically connected with the touch-control induction layer in order to form a touch-control module. The touch-control display device and the manufacture method thereof have following beneficial effects: due to the fact that the high-resistive layer is directly formed on the surface of the color filter substrate, a glass-bearing high-resistive layer is not required; compared with a conventional touch-control device, a layer of ITO glass and an optical adhesive are reduced so that the above-mentioned touch-control display device is thinner; and in addition, material of the high-resistive layer comprises graphite oxide, stannic oxide, a surfactant and a cross-linking agent so that the effect of eliminating static electricity is achieved and flexibility of touch control is improved.
Description
Technical field
The present invention relates to display device field, particularly a kind of touch control display apparatus and preparation method thereof.
Background technology
Touch screen is the important component part of the electronic installations such as electronic installation such as touch screen mobile phone, panel computer, e-book.Traditional touch screen generally comprises display module and touch module, and touch module generally includes the ito glass of two-layer laminate, and two-layer ito glass is bonded together by optical cement.
But along with people are to the lightening pursuit of electronic product, current touch screen at least comprises two-layer ito glass and is used for the optical cement that bonds, and thickness is thicker, limits the development of touch screen.
Summary of the invention
Based on this, be necessary touch control display apparatus that a kind of thinner thickness is provided and preparation method thereof.
A kind of touch control display apparatus, comprise thin film transistor base plate, liquid crystal layer, colored filter substrate, touch-control sensing layer and resistive formation, described touch-control sensing layer is formed at described thin film transistor base plate surface, described liquid crystal layer is formed at the surface of described colored filter substrate towards described thin film transistor base plate, described resistive formation is formed at the surface of described colored filter substrate away from described thin film transistor base plate, described touch-control sensing layer is electrically connected with described resistive formation, and the material of described resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical.
Wherein in an embodiment, described touch-control sensing layer is formed at the surface of described thin film transistor base plate towards described colored filter substrate.
Wherein in an embodiment, the material of described resistive formation comprises the graphite oxide of 3 parts ~ 6 parts according to weight parts, the tin oxide of 1.5 parts ~ 4.5 parts, the surfactant of 25 parts ~ 35 parts and the crosslinking chemical of 20 parts ~ 30 parts.
Wherein in an embodiment, the thickness of described resistive formation is 30nm ~ 50nm.
Wherein in an embodiment, the material of described touch-control sensing layer is ITO.
The preparation method of above-mentioned touch control display apparatus, comprises the steps:
Thin film transistor base plate is provided, forms touch-control sensing layer on described thin film transistor base plate surface;
There is provided colored filter substrate, at the surface formation resistive formation of described colored filter substrate away from described thin film transistor base plate, the material of described resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical;
At the surface formation liquid crystal layer of described colored filter substrate towards described thin film transistor base plate, and
Described touch-control sensing layer is electrically connected with described resistive formation, obtains touch control display apparatus.
Wherein in an embodiment, being operating as of resistive formation is formed away from the surface of described thin film transistor base plate: by the mode of serigraphy, slurry is coated to the surface of described colored filter substrate away from described thin film transistor base plate at described colored filter substrate, described slurry comprises graphite oxide, tin oxide, surfactant, crosslinking chemical and solvent, print speed printing speed is 5.5m/min ~ 7m/min, temperature is 19 DEG C ~ 25 DEG C, and humidity is 30% ~ 50%.
Wherein in an embodiment, described slurry according to mass percentage meter comprise 3% ~ 6% graphite oxide, 1.5% ~ 4.5% tin oxide, the surfactant of 25% ~ 35%, the crosslinking chemical of 20% ~ 30% and 35% ~ 45% solvent.
Wherein in an embodiment, formed after resistive formation on the surface of described colored filter substrate away from described thin film transistor base plate, also comprise and dry and toast process, the described colored filter substrate forming resistive formation is dried 10min ~ 15min naturally, at 97 DEG C ~ 103 DEG C, toasts 25min ~ 33min.
Wherein in an embodiment, formed before resistive formation on the surface of described colored filter substrate away from described thin film transistor base plate, comprise and cleaning treatment, dry process and electrostatic dissipation process are carried out successively to described colored filter substrate, the operation of described cleaning treatment comprises carries out pure water cleaning, caustic dip, two fluid cleaning showers, ultrapure water cleaning showers and high pressure cleaning showers successively, and described drying process comprises carries out cold air drying and heated-air drying successively.
Above-mentioned touch control display apparatus, by forming touch-control sensing layer on thin film transistor base plate surface, and form resistive formation on the colored filter substrate surface of thin film transistor (TFT), resistive formation is electrically connected with touch-control sensing layer and forms touch module.Because resistive formation is formed directly into colored filter substrate surface, without the need to re-using one deck glass carrying resistive formation, compare traditional touch control display apparatus, decrease one deck ito glass and be used for the optical cement that bonds, thus above-mentioned touch control display apparatus is thinner.In addition, the material of resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical, can play the effect eliminating electrostatic, improves the sensitivity of touch-control.
Accompanying drawing explanation
Fig. 1 is the structural representation of the touch control display apparatus of an embodiment;
Fig. 2 is the process flow diagram of the preparation method of the touch control display apparatus of an embodiment.
Embodiment
Mainly in conjunction with concrete drawings and the specific embodiments, touch control display apparatus and preparation method thereof is described in further detail below.
Refer to Fig. 1, the touch control display apparatus 100 of an embodiment, comprise thin film transistor base plate 10, liquid crystal layer 20, colored filter substrate 30, touch-control sensing layer 40 and resistive formation 50.
Liquid crystal layer 20 is positioned between thin film transistor (TFT) (TFT) substrate 10 and colored filter substrate 30, and liquid crystal layer 20 is formed at the surface of colored filter substrate 30 towards thin film transistor base plate 10.Touch-control sensing layer 40 is formed at thin film transistor base plate 10 surface, and resistive formation 50 is formed at the surface of described colored filter substrate 30 away from thin film transistor base plate 10, and touch-control sensing layer 40 is electrically connected with resistive formation 50.Concrete, touch-control sensing layer 40 and resistive formation 50 are electrically connected and are connected by going between.
Thin film transistor base plate 10, colored filter substrate 30 and liquid crystal layer 20 composition display module, touch-control sensing layer 40 is electrically connected with resistive formation 50 and forms touch module.
Concrete, touch-control sensing layer 40 can be formed at the surface of thin film transistor base plate 10 towards colored filter substrate 30, also can be formed at the surface of thin film transistor base plate 10 away from colored filter substrate 30.
Specifically in the present embodiment, touch-control sensing layer 40 is formed at the surface of thin film transistor base plate 10 towards colored filter substrate 30, liquid crystal layer 20 is formed at the surface of colored filter substrate 30 towards thin film transistor base plate 10, and resistive formation 50 is formed at the surface of colored filter substrate 30 away from thin film transistor base plate 10.Touch-control sensing layer 40 can be embedded into liquid crystal layer 20, makes touch panel function be embedded in liquid crystal pixel, embeds touch sensor function, form the touch control display apparatus of In-Cell type, make screen more frivolous in display screen inside.
Certainly, touch control display apparatus 100 also comprises other elements such as electrode, polaroid, cover plate, does not repeat at this.
Concrete, the material of resistive formation 50 comprises graphite oxide, tin oxide, surfactant and crosslinking chemical.
Graphite oxide (Graphiteoxide, GO) is a kind of Novel carbon material, has excellent absorption property.Tin oxide (SnO
2) be a kind of activating oxide, there is characteristic of semiconductor.The compound substance that after the mixing of graphite oxide, tin oxide, surfactant and crosslinking chemical, available can be excellent.Tin oxide can change the surface nature of graphite oxide, and the feature of graphite oxide high porosity, high surface area can promote again the dispersiveness of tin oxide.Various component synergy causes resistive formation 50 to have excellent absorption property and electrology characteristic.
Preferably, the material of resistive formation comprises the graphite oxide of 3 parts ~ 6 parts according to weight parts, the tin oxide of 1.5 parts ~ 4.5 parts, the surfactant of 25 parts ~ 35 parts and the crosslinking chemical of 20 parts ~ 30 parts.
Preferably, the thickness of resistive formation 50 is 30nm ~ 50nm.
Preferably, transmittance >=95% of resistive formation 50, transmittance refers to the ratio that colored filter substrate 30 surface forms the rear transmittance with being formed before resistive formation 50 of resistive formation 50 herein.
Preferably, the material of touch-control sensing layer 40 is ITO, and certainly, the material of touch-control sensing layer 40 is not limited to ITO, also can be that other conductive materials are as AZO etc.
Above-mentioned touch control display apparatus, by forming touch-control sensing layer on thin film transistor base plate surface, and form resistive formation on the colored filter substrate surface of thin film transistor (TFT), resistive formation is electrically connected with touch-control sensing layer and forms touch module.Because resistive formation is formed directly into colored filter substrate surface, without the need to re-using one deck glass carrying resistive formation.The material of resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical, there is excellent absorption property, bond without the need to using optical cement, compare traditional touch control display apparatus, decrease one deck ito glass and be used for the optical cement that bonds, thus above-mentioned touch control display apparatus is thinner, light transmission is better.In addition, the potpourri of graphite oxide and tin oxide, can play the effect eliminating electrostatic, improves the sensitivity of touch-control.
The preparation method of above-mentioned touch control display apparatus as shown in Figure 2, comprises the steps:
S10, provide thin film transistor base plate, form touch-control sensing layer on thin film transistor base plate surface.
The material of touch-control sensing layer 40 is ITO, and certainly, the material of touch-control sensing layer 40 is not limited to ITO, also can be that other conductive materials are as AZO etc.
Concrete, by the mode of stencil or vacuum magnetic-control sputtering at thin film transistor base plate surface coating, and adopt chemical method for etching to carry out patterning, obtain touch-control sensing layer.
Specifically in the present embodiment, at the surface formation touch-control sensing layer of thin film transistor base plate towards colored filter substrate.
S20, provide colored filter substrate, form resistive formation at colored filter substrate away from the surface of thin film transistor base plate, the material of resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical.
Resistive formation is formed on colored filter substrate surface by the mode such as serigraphy, vacuum magnetic-control sputtering.
Slurry is coated to the surface of colored filter substrate away from thin film transistor base plate by the mode of serigraphy by present embodiment, forms resistive formation.Slurry comprises graphite oxide, tin oxide, surfactant and crosslinking chemical, and adds a certain amount of solvent adjustment to slurry viscosity between 25cP ~ 30cP.Solvent can be water or organic solvent etc.
Preferably, slurry according to mass percentage meter comprise 3% ~ 6% graphite oxide, 1.5% ~ 4.5% tin oxide, the surfactant of 25% ~ 35%, the crosslinking chemical of 20% ~ 30% and 35% ~ 45% solvent.
Concrete, surfactant can be stearic acid, neopelex, quaternary ammonium compound, lecithin, fatty glyceride, fatty acid sorb smooth (sapn), polysorbate (tween) etc.
Crosslinking chemical can be tygon, Polyvinylchloride, polyacrylate, polyalkyl acrylate, styrene, vinyl cyanide, acrylic acid, methacrylic acid, glyoxal, aziridine etc.
Specifically in the present embodiment, surfactant is the low bubble bulb-less surface activity agent (PQ-122H) that Shenzhen Rong Qiang Science and Technology Ltd. produces.Crosslinking chemical is the trifunctional aziridine crosslinker (HD-100) that Jiangsu Kangle New Materials Technology Co., Ltd. produces.
Serigraphy operating environment is dustless space (hundred grades).Concrete, serigraphy speed is 5.5m/min ~ 7m/min, and temperature is 19 DEG C ~ 25 DEG C, and humidity is 30% ~ 50%.
Specifically in the present embodiment, by conveyer, substrate is sent on Full automatic flat glass sheet printer table face, and automatically locate, then slurry is printed on colored filter substrate, form one deck resistive formation.
Preferably, formed after resistive formation on the surface of colored filter substrate away from thin film transistor base plate, also comprise and dry and toast process.The colored filter substrate being coated with slurry is dried 10min ~ 15min naturally, then at 97 DEG C ~ 103 DEG C, toasts 25min ~ 33min.Naturally resistive formation is obtained after cooling.
Dry and toast the drying that process can accelerate slurry, each component of resistive formation formed is more evenly distributed.
Preferably, formed before resistive formation on the surface of colored filter substrate away from thin film transistor base plate, colored filter substrate can be carried out successively cleaning treatment, dry process and electrostatic dissipation process, the operation of cleaning treatment comprises carries out pure water cleaning, caustic dip, two fluid cleaning showers, ultrapure water cleaning showers and high pressure cleaning showers successively.Alkali lye can be clean-out system, as the solution containing potassium hydroxide or NaOH.Two fluid spray refer to that make gases at high pressure and cleaning fluid form drop by nozzle and spray at a high speed, cleaning of objects is surperficial by high-pressure gaseous fluid if air and fluid liquid are as after water mixes.Ultrapure water sprays, and pure water refers to the water of resistivity >=8 megaohm.Dry process comprises carries out cold air drying and heated-air drying successively.It should be noted that, if colored filter substrate itself is clean, without dirty and dust, then this step can be omitted.
S30, colored filter substrate towards thin film transistor base plate surface formed liquid crystal layer.
The material of liquid crystal layer can be the organism such as aliphatics, aromatic series, stearic acid.Perfusion liquid crystal method can be adopted between thin film transistor base plate and colored filter substrate to form liquid crystal layer, by thin film transistor base plate and colored filter substrate to after group, adopt capillary principle to be sucked by liquid crystal and form liquid crystal layer.Or adopt formula Liquid crystal pour method of dripping, first liquid crystal is directly dropped on colored filter substrate, and then thin film transistor base plate and colored filter substrate are carried out group.
S40, touch-control sensing layer to be electrically connected with resistive formation, to obtain touch control display apparatus.
Concrete, by lead-in wire, touch-control sensing layer is electrically connected with resistive formation.Form touch module after touch-control sensing layer is electrically connected with resistive formation, the display module of thin film transistor base plate, liquid crystal layer and colored filter substrate composition, touch module forms touch control display apparatus jointly with display module.
It should be noted that, the step of the preparation method of above-mentioned touch control display apparatus is not limited to take said sequence, also can adjust as required.
The preparation method of above-mentioned touch control display apparatus, by forming touch-control sensing layer on thin film transistor base plate surface, and form resistive formation on the colored filter substrate surface of thin film transistor (TFT), resistive formation is electrically connected with touch-control sensing layer and forms touch module.The material of resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical, has excellent absorption property, and without the need to using optical cement to bond, processing step is comparatively simple.The touch control display apparatus thinner thickness prepared by said method, light transmission is better, and has the effect of electrostatic prevention, touch-control highly sensitive.
Be described in detail below in conjunction with specific embodiment.
In following examples, if no special instructions, the experimental technique of unreceipted actual conditions, usually conveniently condition.
Instrument: screen printing machine, cleaning machine, high resistant instrument, film thickness gauge, spectrometer etc.
Reagent: surfactant is the low bubble bulb-less surface activity agent (PQ-122H) that Shenzhen Rong Qiang Science and Technology Ltd. produces, crosslinking chemical is the trifunctional aziridine crosslinker (HD-100) that Jiangsu Kangle New Materials Technology Co., Ltd. produces.
Embodiment 1
Form resistive formation on colored filter substrate surface, comprise the following steps:
(1) use that cleaning machine carries out pure water, alkali lye, two fluid spray, ultrapure water spray to touch control display apparatus colored filter substrate, high-pressure spraying cleans successively, substrate surface is dirty and dust cleans up, through cold wind, heated-air drying, electrostatic dissipation, inspection surface, without dirty and dust, is waited to be coated.
(2) screen process press plated film is used, by conveyer, substrate is sent on Full automatic flat glass sheet printer table face, and automatically locate, then slurry is printed on colored filter substrate, slurry according to mass percentage meter comprise 4.5% graphite oxide, 3.5% tin oxide, the surfactant of 30%, the crosslinking chemical of 28% and 36% solvent.Operating environment is dustless space (hundred grades), and serigraphy speed is 6m/min, and temperature is 23 DEG C, and humidity is 42%.Be completed for printing and naturally dry 10min ~ 15min afterwards, then put into baking box 97 DEG C ~ 103 DEG C baking 25min ~ 33min, after cooling, obtain resistive formation.
The thickness adopting film thickness gauge test resistive formation is 19nm.
The transmittance adopting spectrometer test resistive formation is 96.8%.
Film hardness is 6H.
Certainly, prepare the preparation that touch control display apparatus also comprises cover plate, Polarizer, lead-in wire, adopt common method in the industry, do not limit at this.
The resistance adopting resistance instrument test resistive formation is 5 × 10
8Ω/cm
2.Adopt climatic chamber at 90 DEG C, 60% humidity 240 hours baking experiment, the resistance change rate of resistive formation is 22%.Alcohol-pickled 5 minutes, the resistance change rate of resistive formation was 24%.Baking box cushioning 60 DEG C baking 240 hours, change in resistance is 7%.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a touch control display apparatus, it is characterized in that, comprise thin film transistor base plate, liquid crystal layer, colored filter substrate, touch-control sensing layer and resistive formation, described touch-control sensing layer is formed at described thin film transistor base plate surface, described liquid crystal layer is formed at the surface of described colored filter substrate towards described thin film transistor base plate, described resistive formation is formed at the surface of described colored filter substrate away from described thin film transistor base plate, described touch-control sensing layer is electrically connected with described resistive formation, the material of described resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical.
2. touch control display apparatus according to claim 1, is characterized in that, described touch-control sensing layer is formed at the surface of described thin film transistor base plate towards described colored filter substrate.
3. touch control display apparatus according to claim 1, it is characterized in that, the material of described resistive formation comprises the graphite oxide of 3 parts ~ 6 parts according to weight parts, the tin oxide of 1.5 parts ~ 4.5 parts, the surfactant of 25 parts ~ 35 parts and the crosslinking chemical of 20 parts ~ 30 parts.
4. touch control display apparatus according to claim 1, is characterized in that, the thickness of described resistive formation is 30nm ~ 50nm.
5. touch control display apparatus according to claim 1, is characterized in that, the material of described touch-control sensing layer is ITO.
6. a preparation method for the touch control display apparatus according to any one of Claims 1 to 5, is characterized in that, comprises the steps:
Thin film transistor base plate is provided, forms touch-control sensing layer on described thin film transistor base plate surface;
There is provided colored filter substrate, at the surface formation resistive formation of described colored filter substrate away from described thin film transistor base plate, the material of described resistive formation comprises graphite oxide, tin oxide, surfactant and crosslinking chemical;
At the surface formation liquid crystal layer of described colored filter substrate towards described thin film transistor base plate, and
Described touch-control sensing layer is electrically connected with described resistive formation, obtains touch control display apparatus.
7. the preparation method of touch control display apparatus according to claim 6, it is characterized in that, being operating as of resistive formation is formed away from the surface of described thin film transistor base plate: by the mode of serigraphy, slurry is coated to the surface of described colored filter substrate away from described thin film transistor base plate at described colored filter substrate, described slurry comprises graphite oxide, tin oxide, surfactant, crosslinking chemical and solvent, print speed printing speed is 5.5m/mim ~ 7m/min, temperature is 19 DEG C ~ 25 DEG C, and humidity is 30% ~ 50%.
8. the preparation method of touch control display apparatus according to claim 7, it is characterized in that, described slurry according to mass percentage meter comprise 3% ~ 6% graphite oxide, 1.5% ~ 4.5% tin oxide, the surfactant of 25% ~ 35%, the crosslinking chemical of 20% ~ 30% and 35% ~ 45% solvent.
9. the preparation method of touch control display apparatus according to claim 6, it is characterized in that, formed after resistive formation on the surface of described colored filter substrate away from described thin film transistor base plate, comprise and dry and toast process, the described colored filter substrate forming resistive formation is dried 10min ~ 15min naturally, at 97 DEG C ~ 103 DEG C, toasts 25min ~ 33min.
10. the preparation method of touch control display apparatus according to claim 6, it is characterized in that, formed before resistive formation on the surface of described colored filter substrate away from described thin film transistor base plate, comprise and cleaning treatment, dry process and electrostatic dissipation process are carried out successively to described colored filter substrate, the operation of described cleaning treatment comprises carries out pure water cleaning, caustic dip, two fluid cleaning showers, ultrapure water cleaning showers and high pressure cleaning showers successively, and described drying process comprises carries out cold air drying and heated-air drying successively.
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| CN114437391A (en) * | 2020-11-06 | 2022-05-06 | 湖南七点钟文化科技有限公司 | Tin-based large-resistance film coating liquid, preparation method thereof and preparation method of tin-based large-resistance film |
| CN114437393A (en) * | 2020-11-06 | 2022-05-06 | 湖南七点钟文化科技有限公司 | Zinc-based high-resistance film coating liquid, preparation method thereof and preparation method of zinc-based high-resistance film |
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| CN114437393A (en) * | 2020-11-06 | 2022-05-06 | 湖南七点钟文化科技有限公司 | Zinc-based high-resistance film coating liquid, preparation method thereof and preparation method of zinc-based high-resistance film |
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Application publication date: 20160113 |
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