CN115340302A - Display substrate processing method and display screen - Google Patents
Display substrate processing method and display screen Download PDFInfo
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- CN115340302A CN115340302A CN202210970271.4A CN202210970271A CN115340302A CN 115340302 A CN115340302 A CN 115340302A CN 202210970271 A CN202210970271 A CN 202210970271A CN 115340302 A CN115340302 A CN 115340302A
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0005—Other surface treatment of glass not in the form of fibres or filaments by irradiation
- C03C23/006—Other surface treatment of glass not in the form of fibres or filaments by irradiation by plasma or corona discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/34—Printing on other surfaces than ordinary paper on glass or ceramic surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/42—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/40—Screen printing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
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- Ceramic Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application provides a display substrate processing method and a display screen, and belongs to the field of display processing. The method comprises the following steps: selecting a glass substrate with the thickness of 3.0-10.0 mm, and carrying out physical strengthening on the glass substrate sequentially comprises heating and air cooling, wherein the heating condition comprises: synchronously heating the upper surface and the lower surface of the glass substrate, wherein the heating temperature of the upper surface of the glass substrate is 650-750 ℃, the heating temperature of the lower surface of the glass substrate is 640-740 ℃, the heating temperature of the upper surface is 2-15 ℃ higher than that of the lower surface, and the heating time is 120-400 s; the air cooling sequentially comprises a first cooling step and a second cooling step, wherein the first cooling step comprises cooling by using cooling air with first air pressure of 4.0-10 Kpa, and the first air cooling time is 100-250 s; the second cooling comprises cooling with cooling air with a second wind pressure of 2.0-4.0 Kpa, the second wind cooling time is 50-250 s, and the first wind pressure is 2.0-6.0Kpa higher than the second wind pressure; and carrying out post-treatment on the glass substrate after physical strengthening to obtain the display substrate. The invention can increase the impact resistance, the anti-pollution capability and the infrared ray resistance of the display substrate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate processing method and a display screen.
Background
As an important port of intelligent interaction, the novel commercial display becomes an important support and foundation for bearing emerging industries such as ultra-high definition videos, internet of things and virtual reality. The display substrate is an important part of a commercial display, and at least the following problems exist in the prior art: under extreme outdoor environments such as typhoons, hailstones, collision and extrusion of foreign objects and the like, the conditions such as breakage and the like are easy to occur; under the use condition of external sunlight, the display effect can be reduced, and the service life of the product can be also reduced; if the antifouling ability and the scratch-proof ability are not enough, under the conditions of dirt, dust, rain and snow in the external environment, friction of foreign objects and the like, the dirt can be remained on the surface of the display substrate, the scratch is bad, and the integral using effect is further influenced.
Disclosure of Invention
An object of embodiments of the present invention is to provide a display substrate processing method and a display panel, which can solve at least partially or completely the above existing technical problems.
In order to achieve the above object, an embodiment of the present invention provides a method for processing a display substrate, including: selecting a glass substrate with the thickness of 3.0-10.0 mm; carrying out physical strengthening on the glass substrate, wherein the physical strengthening sequentially comprises heating and air cooling, and the heating condition comprises the following steps: synchronously heating the upper surface and the lower surface of the glass substrate, wherein the heating temperature of the upper surface of the glass substrate is 650-750 ℃, the heating temperature of the lower surface of the glass substrate is 640-740 ℃, the heating temperature of the upper surface is 2-15 ℃ higher than that of the lower surface, and the heating time is 120-400 s; the air cooling sequentially comprises a first cooling and a second cooling, wherein the first cooling condition comprises cooling by cooling air with first air pressure, the first air pressure is 4.0-10 Kpa, and the first air cooling time is 100s-250s; the second cooling condition comprises cooling with cooling air at a second wind pressure of 2.0-4.0 Kpa, wind cooling time of 50s-250s, second wind pressure of 2.0-4.0 Kpa, and first wind pressure higher than second wind pressure by 2.0-6.0Kpa; and carrying out post-treatment on the glass substrate after physical strengthening to obtain the display substrate.
Optionally, the heating temperature of the upper surface of the glass substrate is 680-700 ℃, the heating temperature of the lower surface of the glass substrate is 670-690 ℃, the heating temperature of the upper surface is 5-10 ℃ higher than the heating temperature of the lower surface, and the heating time is 200-300s.
Optionally, the air cooling is performed through a flat air grid, and the flat air grid is located 3-6mm above the glass substrate.
Optionally, the post-processing further comprises a printing step and a coating step, wherein in the printing step, an ink layer and a window area are formed on the lower surface of the glass substrate by a screen printing process through printing ink; the plating step of forming an AR/IR film on the upper surface of the glass substrate and forming an AF film on the surface of the AR/IR film includes: the first layer of the target material is Nb through magnetron sputtering 2 O 5 The second layer is made of SiO 2 Sequentially stacking for 2-5 times to form a layer with the thickness of 700-900 nmThe AR/IR film of (1); and cleaning the surface of the AR/IR film by plasma, spraying AF liquid medicine on the AR/IR film, and curing by an oven to form the AF film.
Optionally, the printing step further comprises surface drying and baking the printed ink layer, wherein the surface drying temperature is 140-180 ℃, and the surface drying time is 2-10 min; the temperature of the solid baking is 140-190 ℃, and the time of the solid baking is 20-60 min.
Optionally, the temperature required for the solid baking is 150-170 ℃, and the duration is 15-30 min.
Optionally, the ink layers include a first ink layer and a second ink layer, the second ink layer is on the first ink layer, and the first ink layer and the second ink layer have the same thickness; the window area comprises a first window area and a second window area, the other areas of the first ink layer form the first window area, and the other areas of the second ink layer form the second window area; the first ink layer is positioned on the first surface of the glass substrate; the thickness of the first ink layer and the second ink layer is 4-7 um; the second window area is 0.4-2.0 mm larger than the first window area.
Optionally, the glass substrate is at least one of soda lime glass, alkali-free glass, and aluminosilicate glass.
On the other hand, the invention also provides a display screen, and the display screen is manufactured by the method.
Through the technical scheme, the thickness selection of the substrate and the physical strengthening process are combined, so that the safety performance of the display substrate can be improved, and the impact resistance can be improved; by spraying the AR/IR film, the visible light transmittance is increased, and the infrared absorption capability of the substrate is reduced, so that low heat absorption is achieved, the service lives of electronic circuits and electronic components inside the display substrate are effectively protected, the service life of the whole product is prolonged, the visibility is increased, and the outdoor use impression effect is improved; by the process of spraying the AF nano coating on the AR/IR film, the anti-fouling capability and the scratch resistance of the display substrate are improved, the transmissivity of visible light is increased, and the effect of shielding infrared rays is improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and do not limit the embodiments. In the drawings:
FIG. 1 is a flow chart illustrating a method of processing a display substrate according to one embodiment of the present invention;
FIG. 2 is a diagram of a display substrate according to an embodiment of the invention;
FIG. 3A is a graph of strength test data for a display substrate at different temperatures according to one embodiment of the present invention;
FIG. 3B is an impact IK protection rating corresponding to standard EN 62262;
FIG. 3C is a top view of impact points of a falling ball in an impact resistance IK protection level test;
fig. 3D is a sectional view showing a mounting position at the time of substrate testing;
FIG. 4 is strength test data for comparative example 1;
FIG. 5 is strength test data for comparative example 2;
fig. 6 is strength test data for comparative example 3.
Description of the reference numerals
201-1 first transparent protective film 201-2 second transparent protective film
202 AF film 203 AR/IR film
204. Glass substrate 205-1 first ink layer
205-2 first ink layer 206-1 second ink layer
206-2 second ink layer
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 shows a flow chart of a display substrate processing method according to an embodiment of the present invention, in which a glass substrate 204 with a thickness of 3.0 to 10.0mm is selected first, and in the embodiment of the present invention, the glass substrate 204 with a thickness of 5.0mm is taken as an example for processing, but it is needless to say that glass substrates with different thicknesses may be selected for processing according to need, and the glass substrate is at least one of soda lime glass, alkali-free glass, and aluminosilicate glass.
Selecting a proper glass substrate, and then processing the appearance CNC of the glass substrate 204 into a required size, wherein the embodiment of the invention is mainly used for large-scale commercial display substrates, and the display substrates have the size of more than 1200mm × 700mm in length and width; the processed glass substrate 204 is subjected to physical strengthening, wherein the physical strengthening sequentially comprises heating and air cooling, and the heating conditions comprise: the upper surface and the lower surface of the glass substrate 204 are synchronously heated, the heating temperature of the upper surface of the glass substrate 204 is 650-750 ℃, the heating temperature of the lower surface of the glass substrate 204 is 640-740 ℃, the heating temperature of the upper surface is 2-15 ℃ higher than that of the lower surface, the heating time is 120-400 s, and a physical toughening furnace is adopted for heating treatment.
The air cooling comprises a first cooling and a second cooling in sequence, the air cooling is carried out through a flat air grid, the flat air grid is located 3-6mm above the glass substrate, and the air cooling is preferably 4mm in the embodiment. The first cooling is quenching, the second cooling is conventional cooling, the glass substrate 204 after the heating treatment is rapidly subjected to the first cooling and the second cooling, and as the temperature of the glass substrate is gradually reduced, the surface layer which is firstly cooled can restrict the furling of the interior, and tensile stress is generated in the glass, so that the strength of the glass substrate is increased. Wherein the first wind pressure is 4.0-10 Kpa, and the first air cooling time is 100-250 s; the second cooling condition comprises cooling with cooling air of second wind pressure, the second wind pressure is 2.0-4.0 Kpa, the second wind cooling time is 50s-250s, the second wind pressure is 2.0-4.0 Kpa, and the first wind pressure is 2.0-6.0Kpa higher than the second wind pressure; and performing post-treatment on the glass substrate 204 after the physical strengthening to obtain the display substrate.
By combining the thickness of the glass substrate 204 and the physical strengthening process, the strength of the glass substrate 204 is increased by 3-5 times from the impact strength of the existing display substrate, and the IK10 grade (20J impact energy) is satisfied.
Preferably, in order to meet the requirement of the processing technology and save energy, the heating temperature of the upper surface of the glass substrate 204 can be set to 680-700 ℃, the heating temperature of the lower surface of the glass substrate 204 can be set to 670-690 ℃, the heating temperature of the upper surface is 5-10 ℃ higher than the heating temperature of the lower surface, and the heating time is 200-300s.
The strength of the glass substrate is enhanced through the process, and the post-treatment further comprises a printing step and a coating step in order to increase the visible light transmittance, reduce the infrared transmittance and prevent pollution. In the printing step, an ink layer and a window area are formed on the lower surface of the glass substrate by a screen printing process, fig. 2 shows a structure diagram of a display substrate according to an embodiment of the present invention, as shown in the figure, the first ink layer is composed of a first ink layer 205-1 and a first ink layer 205-2 which are bilaterally symmetrical, and the other area except the ink layer is the first window area. The second ink layer is composed of a second ink layer 206-1 and a second ink layer 206-2 which are bilaterally symmetrical, and other areas of the second ink layers 206-1 and 206-2 form a second window area; the first ink layers 205-1 and 205-2 are located on the first side of the glass substrate 204; the thicknesses of the first ink layers 205-1 and 205-2 and the second ink layers 206-1 and 206-2 are respectively 4-7 um; the second window area is 0.4-2.0 mm larger than the first window area. The screen mesh number adopted by ink printing is 100T-165T, and the printed ink layer is subjected to surface drying and solid baking, wherein the surface drying temperature is 140-180 ℃, and the surface drying time is 2-10 min; the temperature of the solid baking is 140-190 ℃, and the time of the solid baking is 20-60 min.
The ink layer plays a role in decoration and is used for hiding electronic components and circuits which are uneven on the back of the display substrate; in addition, since the processed glass substrate and the LCM (display module) need to be completely attached to each other, and the display effect is finally achieved, the first ink layer 205 and the second ink layer 206 are staggered, so that the situation that the ink layers are completely overlapped and too high in thickness and bubbles are formed by attaching the LCM (display module) and the glass substrate is avoided.
In many cases, the display substrate needs to be operated outdoors, and outdoor light easily affects the sight of people, so in order to make the display substrate clearly seen outdoors, an AR/IR film is formed on the upper surface of the glass substrate 204 by plating, that is, a composite film of the AR film and the IR film, so that on one hand, the AR film can reduce reflected light, enhance incident light to play a role in reflection enhancement, and make the display effect clearer; on the other hand, the IR film reduces the transmittance of the infrared band, thereby achieving a low heat absorption effect and further effectively protecting the service life of electronic circuits and electronic components inside the display substrate.
Specifically, the coating step includes coating an AR/IR film 203 on the upper surface of the glass substrate, including: the first layer of the target material is formed by Nb through magnetron sputtering 2 O 5 The second layer is made of SiO 2 And stacking for 2-5 times in sequence to form the AR/IR film 203 with the thickness of 700-900 nm, and designing a spectral curve by using any one of TFC, OPTI and MACLEOD by using film system design software. The formed antireflection 203 can reduce the transmittance of an IR infrared band and enhance the transmittance of visible light, the transmittance of the infrared band is below 85% in 780-1000 nm band, the transmittance of the infrared band is about 40% in 1000nm band, the transmittance of the visible light is kept between 80% and 94% in 380-780 nm band, and the transmittance of the visible light is more than 93% in 550nm band, so that the display visibility under outdoor light is improved, and meanwhile, the absorption capacity of the substrate to solar light is effectively reduced, so that the low heat absorption effect is achieved, the service lives of electronic circuits and electronic components in the display device are further effectively protected, excessive heat absorption and overhigh temperature are effectively prevented, the deterioration of the operating environment is prevented, and the service life cycle of the display substrate caused by the aging of each component is shortened.
Further, because outdoor display substrate is often blown by the wind and is shone, especially meets rain, snow and sand dirt weather, very easily causes the dirty influence visibility of display screen, therefore this application embodiment still include form AF membrane 202 on the surface of AR/IR membrane 203, can effectively prevent the grease proofing dust of fingerprint, have very high luminousness again. A process of forming the AF film 202, comprising the steps of:
(a) Cleaning: after the alkaline cleaning agent and the RO water are matched in a proper proportion, cleaning by adopting groove type or flat plate type ultrasonic waves for removing dirt and foreign matter attachments on the surface of the glass substrate;
(b) Removing water: removing the cleaned glass substrate;
(c) Ion source cleaning: subjecting the surface of the AR/IR film 203 to Plasma cleaning;
(d) Spraying AF liquid medicine: adopting AF liquid medicine on the AR/IR film 203, and carrying out high-pressure atomization by using a precision spraying device, wherein the AF liquid medicine is composed of 20-40% of perfluoropolyether (PFPE) polymer as a main agent and 60-70% of perfluorocyclic ether as a diluent;
(e) And (3) curing: and curing the mixture in an oven to form the AF film, wherein the temperature required by curing is 150-170 ℃, and the duration is 15-30 min.
The formed AF film 202 has the functions of hydrophobicity, oil drainage, stain resistance, insulation, acid resistance and fingerprint resistance, the scratch resistance of the surface can be improved, the pencil hardness can reach 9H, and the hardness evaluation method comprises the following steps: and (3) marking 5 lines by using a Mitsubishi pencil with the hardness of H-9H under the load of 1000g, observing whether the optical hard coating layer is scratched or not, and judging that the grade of the test pencil is met if the number of the scratched lines is less than 3. The friction resistance can also be improved, and the specific determination method is to use #0000 steel wool, a 1 multiplied by 1cm pressure head and a load of 1000g to rub the surface of the hard coating film back and forth more than 3000 times at a speed of 60 times per minute and a stroke of 40mm, and the dynamic friction coefficient is less than 0.03.
Cleaning the processed display substrate, and cleaning the display substrate by using special cleaning equipment such as a flat tunnel type ultrasonic cleaner or a groove type ultrasonic cleaner and adding a neutral cleaning agent and RO water, so that the cleanliness is increased, and the inspection and assembly use requirements are met; the appearance of the display substrate is checked and judged to determine whether the appearance inspection standard is met. Packaging the display substrate qualified by inspection, covering a first transparent protective film 201-1 on the AF film 202 and covering a second transparent protective film 201-2 below the second ink layers 206-1 and 206-2, wherein the transparent protective film can be any one of a PE film, a PVC film or a PET film, and the embodiment is not limited in particular, and the purpose of covering the transparent protective film is to protect the product, so that the operations of dust prevention, pollution prevention, convenient assembly and the like are achieved.
FIG. 3A is the strength test data of the display substrate at different temperatures according to one embodiment of the present invention, in which the glass substrate is, for example, sodium-calcium, the thickness of the glass substrate is preferably 5.0mm, the first cooling air distance is 4.0mm, the second cooling air distance is 4.0mm, the first cooling air pressure is 6Kpa, and the second cooling air pressure is 2Kpa, so that it can be seen that the impact resistance is affected by the simultaneous increase or decrease of the upper surface temperature and the lower surface temperature of the glass substrate with the same thickness; FIG. 3B shows the falling ball impact energy standard EN62262 protection level of impact-resistant IK, which corresponds to IK 1-IK 11; fig. 3C is a top view of the impact point positions of the falling balls in the protection level test, which corresponds to the schematic diagram of the impact point positions of the falling balls at different point positions in fig. 3A, and the impact point positions of the falling balls are sequentially a center, R1, R2, R3 and R4; FIG. 3D is a cross-sectional view showing the mounting position of the substrate during ball drop impact test, showing the substrate placed on the supporting jig; the above experimental data show that the impact resistance of the substrate can reach IK 09-IK 10.
Accordingly, fig. 4 is the test data of comparative example 1, which is different from the inventive example in that the temperatures of the upper surface and the lower surface in the heating process are reduced, and when the upper surface temperature is less than 650 ℃ and the lower surface temperature is less than 645 ℃, the impact resistance IK protection grade cannot reach IK10; fig. 5 is test data of comparative example 2, which is different from the example of the present invention in that temperatures of the upper surface and the lower surface in the heating process are increased, and when the upper surface temperature is 720 to 750 ℃ and the lower surface temperature is higher than 715 to 745 ℃, although the impact IK rating can reach IK10, poor appearance is easily occurred, and thus it is preferable that the upper surface heating temperature is 680 to 700 ℃, the lower surface heating temperature is 670 to 690 ℃, the upper surface heating temperature is 5 to 10 ℃ higher than the lower surface heating temperature, and the heating time is 200 to 300s. Fig. 6 shows the test data of comparative example 3, and the difference between comparative example 3 and the embodiment of the present invention is that the first wind pressure and the second wind pressure are gradually decreased, and the impact IK protection level of the display substrate is gradually decreased, which does not satisfy the purpose of increasing the impact IK protection level of the display substrate. The test methods of comparative example 1, comparative example 2 and comparative example 3 among them, on the display substrate, were consistent with the test methods of the examples of this application, as shown in fig. 3B and 3C.
Correspondingly, the invention also comprises a display screen, wherein the display screen is prepared by the method, and the specific preparation method is not repeated herein.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for processing a display substrate, the method comprising:
selecting a glass substrate with the thickness of 3.0-10.0 mm;
and carrying out physical strengthening on the glass substrate, wherein the physical strengthening sequentially comprises heating and air cooling, and the heating conditions comprise: synchronously heating the upper surface and the lower surface of the glass substrate, wherein the heating temperature of the upper surface of the glass substrate is 650-750 ℃, the heating temperature of the lower surface of the glass substrate is 640-740 ℃, the heating temperature of the upper surface is 2-15 ℃ higher than that of the lower surface, and the heating time is 120-400 s;
the air cooling sequentially comprises a first cooling and a second cooling, wherein the first cooling condition comprises cooling by cooling air with first air pressure, the first air pressure is 4.0-10 Kpa, and the first air cooling time is 100s-250s; the second cooling condition comprises cooling with cooling air of second wind pressure, the second wind pressure is 2.0-4.0 Kpa, the second wind cooling time is 50-250 s, the second wind pressure is 2.0-4.0 Kpa, and the first wind pressure is 2.0-6.0Kpa higher than the second wind pressure;
and carrying out post-treatment on the glass substrate after physical strengthening to obtain the display substrate.
2. The method for processing the display substrate according to claim 1, wherein the heating temperature of the upper surface of the glass substrate is 680 ℃ to 700 ℃, the heating temperature of the lower surface of the glass substrate is 670 ℃ to 690 ℃, the heating temperature of the upper surface is 5 ℃ to 10 ℃ higher than the heating temperature of the lower surface, and the heating time is 200 s to 300s.
3. The method of claim 1, wherein the air cooling is performed by a flat air grid, the flat air grid being located 3-6mm above the glass substrate.
4. The display substrate processing method according to any one of claims 1 to 3, wherein the post-treatment further comprises a printing step and a plating step, wherein,
the printing step, printing ink on the lower surface of the glass substrate by a screen printing process to form an ink layer and a window area;
the plating step of forming an AR/IR film on the upper surface of the glass substrate and forming an AF film on the surface of the AR/IR film includes:
the first layer of the target material is formed by Nb through magnetron sputtering 2 O 5 The second layer is made of SiO 2 In succession 2-5 stacks forming an AR-An IR film;
and cleaning the surface of the AR/IR film by plasma, spraying AF liquid medicine on the AR/IR film, and curing by an oven to form the AF film.
5. The method as claimed in claim 4, wherein the printing step further comprises surface drying and baking the printed ink layer, wherein
The surface drying temperature is 140-180 ℃, and the surface drying time is 2-10 min;
the temperature of the solid baking is 140-190 ℃, and the time of the solid baking is 20-60 min.
6. The method of claim 4, wherein the curing is carried out at a temperature of 150 ℃ to 170 ℃ for a time of 15 to 30min.
7. The method for processing the display substrate according to claim 4, wherein the ink layer comprises a first ink layer and a second ink layer, the second ink layer is on the first ink layer, and the first ink layer and the second ink layer have the same thickness;
the window area comprises a first window area and a second window area, the other areas of the first ink layer form the first window area, and the other areas of the second ink layer form the second window area;
the first ink layer is located on the first surface of the glass substrate.
8. The method for processing a display substrate according to claim 7, wherein the thicknesses of the first ink layer and the second ink layer are respectively 4-7 um;
the second window area is 0.4-2.0 mm larger than the first window area.
9. The method of processing a display substrate according to claim 1, wherein the glass substrate is at least one of soda lime glass, alkali-free glass, and aluminosilicate glass.
10. A display screen, characterized in that it is manufactured by the method of any one of claims 1-9.
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Application publication date: 20221115 |