CN111710236A - U-shaped surrounding curved screen and spraying exposure method thereof - Google Patents
U-shaped surrounding curved screen and spraying exposure method thereof Download PDFInfo
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- CN111710236A CN111710236A CN202010332830.XA CN202010332830A CN111710236A CN 111710236 A CN111710236 A CN 111710236A CN 202010332830 A CN202010332830 A CN 202010332830A CN 111710236 A CN111710236 A CN 111710236A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to the field of electronic equipment, and particularly discloses a U-shaped surrounding curved screen and a spraying exposure method thereof, wherein the U-shaped surrounding curved screen comprises a U-shaped surrounding curved screen panel; a light resistance layer is arranged on the edge of the U-shaped surrounding curved surface screen panel; the light resistance layer comprises a first light resistance layer and a second light resistance layer, the first light resistance layer is arranged on the U-shaped surrounding curved face screen panel, and the second light resistance layer is arranged on the first light resistance layer. The spraying exposure process of the invention uniformly coats the photoresist on the glass panel of the display area through a rotating angle spraying machine and a high-precision spray gun, and uses plasma for cleaning to increase the adhesion firmness degree between the photoresist and the glass panel, and uses an exposure machine for exposure to form patterns on the photoresist layer; in the whole process, two times of spraying exposure are adopted, the technical bottleneck that the U-shaped surrounding curved screen cannot be printed and processed in parallel exposure in the industry is overcome, and the technical blank of the industry is filled.
Description
Technical Field
The invention belongs to the field of electronic equipment, and particularly relates to a U-shaped surrounding curved screen and a spraying exposure method thereof.
Background
The display screen of electronic equipment (mobile phones, flat panels, etc.) is generally a glass panel, which plays a role in protecting the equipment. The edge of the glass panel is a light-blocking area, and the middle area surrounded by the light-blocking area is a display area. With the popularization of planar smart phones, more and more manufacturers take a curved screen as a new trend direction of the smart phones, the manufacturers generally adopt curved glass as an outer screen of the smart phones, in the manufacturing process, the working procedure of printing a light blocking agent on the curved glass screen is generally involved, and the printing difficulty is increased due to the curved modeling of the glass.
Disclosure of Invention
The invention provides a U-shaped surrounding curved screen and a spraying exposure method thereof, which can print a light-resisting agent on the U-shaped surrounding curved screen and solve the technical problem that the U-shaped surrounding curved screen cannot be printed and subjected to parallel exposure processing in the industry.
The technical scheme of the invention is realized as follows:
a wrap around screen for a U-shaped ring, comprising:
u-shaped surrounding curved screen panel;
a light resistance layer is arranged on the edge of the U-shaped surrounding curved surface screen panel;
the surrounding screen panel comprises a first panel, a second panel and a curved plate; the first panel is arranged above the second panel; one end of the curved plate is connected with the first panel, and the other end of the curved plate is connected with the second panel;
the first panel comprises a visual panel and an arc-shaped plate which are connected with the curved plate, and the arc-shaped plate is bent downwards;
the photoresist layer is arranged on the lower surface of the first panel, the upper surface of the second panel and the inner surface of the curved plate; the photoresist layers on the first panel, the curved panel and the second panel form a closed loop;
the light resistance layer comprises a first light resistance layer and a second light resistance layer, the first light resistance layer is arranged on the U-shaped surrounding curved face screen panel, and the second light resistance layer is arranged on the first light resistance layer.
Furthermore, the curved plate is a semicircular panel, one end of the curved plate is tangent to the bottom surface of the first panel, and the other end of the curved plate is tangent to the top surface of the second panel.
Further, the length of the first panel is greater than the length of the second panel.
Furthermore, one end of the first panel far away from the curved plate is a bent end, and a photoresist layer is arranged on the lower surface of the bent end.
The invention also provides a spraying exposure process for the U-shaped surrounding curved screen, which comprises the following steps:
1) cleaning the U-shaped surrounding curved screen panel with ultrapure water for 2-4 times in sequence, cleaning with ethanol for 1-3 times, and drying for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) and then placing the photoresist into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist into an exposure device for exposure treatment, and taking down the covering object to obtain the U-shaped surrounding curved screen.
Furthermore, the negative photoresist comprises the following raw materials, by weight, 20-30 parts of hydroxyacrylic resin, 20-30 parts of epoxy acrylic resin, 20-30 parts of trimethylolpropane triacrylate, 2-4 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 4-7 parts of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, 10-15 parts of nano titanium dioxide, 2-4 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one and 100-150 parts of propylene glycol monomethyl ether acetate.
Furthermore, the thickness of the first photoresist layer is 2-3 μm, and the thickness of the second photoresist layer is 3-4 μm.
The invention provides a U-shaped surrounding curved screen and a spraying exposure method thereof, which have the following advantages;
1) the edge of the U-shaped surrounding curved-surface screen panel is a light resistance layer, the region surrounded by the light resistance layer is a display region, and the light resistance layer is used as a non-display region, so that the frame of the electronic equipment can be shielded, the frame range is visually reduced, and the appearance effect of the electronic equipment is improved. The light resistance layer is designed into two layers, namely a first light resistance layer and a second light resistance layer, so that the shading effect of the light resistance layer can be improved, and the U-shaped surrounding curved screen has a good optical effect.
2) Uniformly coating a photoresist on a glass panel in a display area by a rotating angle spraying machine and a high-precision spray gun, cleaning by using plasma to increase the adhesion firmness degree between the photoresist and the glass panel, and exposing by using an exposure machine to form a pattern on the photoresist layer; in the whole process, two times of spraying exposure are adopted, the technical bottleneck that the U-shaped surrounding curved screen cannot be printed and processed in parallel exposure in the industry is overcome, and the technical blank of the industry is filled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a U-shaped wrap-around screen according to the present invention;
fig. 2 is a top view of fig. 1.
In the figure:
1. u-shaped surrounding curved screen panel; 2. a first panel; 3. a second panel; 4. a curved plate; 5. and (4) a photoresist layer.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-2, the present invention provides a screen for U-shaped surround curves, comprising:
u-shaped surrounding curved screen panel;
a light resistance layer is arranged on the edge of the U-shaped surrounding curved surface screen panel;
the surrounding screen panel comprises a first panel, a second panel and a curved plate; the first panel is arranged above the second panel; one end of the curved plate is connected with the first panel, the other end is connected with the second panel,
the first panel comprises a visual panel and an arc-shaped plate which are connected with the curved plate, and the arc-shaped plate is bent downwards;
the photoresist layer is arranged on the upper surface of the first panel, the lower surface of the lower panel and the outer surface of the curved plate; the photoresist layers on the first panel, the curved panel and the second panel form a closed loop;
the light resistance layer comprises a first light resistance layer and a second light resistance layer, the first light resistance layer is arranged on the U-shaped surrounding curved face screen panel, and the second light resistance layer is arranged on the first light resistance layer.
The edge of the U-shaped surrounding curved-surface screen panel is the light resistance layer, the region surrounded by the light resistance layer is the display region, and the light resistance layer is used as the non-display region, so that the frame of the electronic equipment can be shielded, the frame range is visually reduced, and the appearance effect of the electronic equipment is improved. The light resistance layer is designed into two layers, namely a first light resistance layer and a second light resistance layer, so that the shading effect of the light resistance layer can be improved, and the U-shaped surrounding curved screen has a good optical effect.
It should be noted that the curved plate is a semicircular panel, and one end of the curved plate is tangent to the bottom surface of the first panel, and the other end is tangent to the top surface of the second panel. Wherein the length of the first panel is greater than the length of the second panel.
The invention also provides a spraying exposure process for the U-shaped surrounding curved screen, which comprises the following steps:
1) cleaning the U-shaped surrounding curved screen panel with ultrapure water for 2-4 times in sequence, cleaning with ethanol for 1-3 times, and drying for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) and then placing the photoresist into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist into an exposure device for exposure treatment, and taking down the covering object to obtain the U-shaped surrounding curved screen.
Uniformly coating the photoresist on the glass panel in the display area by a high-precision spray gun of a rotating angle spraying machine, cleaning by using plasma to increase the adhesion firmness degree between the photoresist and the glass panel, and exposing by using an exposure machine to form a pattern on the photoresist layer; in the whole process, two times of spraying exposure are adopted, the technical bottleneck that the U-shaped surrounding curved screen cannot be printed and processed in parallel exposure in the industry is overcome, and the technical blank of the industry is filled.
In the embodiment of the invention, the negative photoresist comprises the following raw materials, by weight, 20-30 parts of hydroxyacrylic resin, 20-30 parts of epoxy acrylic resin, 20-30 parts of trimethylolpropane triacrylate, 2-4 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 4-7 parts of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, 10-15 parts of nano titanium dioxide, 2-4 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one and 100-150 parts of propylene glycol monomethyl ether acetate. The negative photoresist can increase the photoresist in the non-display area, and the negative photoresist has high adhesion and can increase the adhesion firmness with the U-shaped surrounding curved screen panel.
In the embodiment of the present invention, the thickness of the first photoresist layer is 2-3 μm, and the thickness of the second photoresist layer is 3-4 μm.
For further illustration of the present invention, the following description will be made in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
A U-shaped wrap around screen comprising:
u-shaped surrounding curved screen panel;
a light resistance layer is arranged on the edge of the U-shaped surrounding curved surface screen panel;
the surrounding screen panel comprises a first panel, a second panel and a curved plate; the first panel is arranged above the second panel; one end of the curved plate is connected with the first panel, the other end is connected with the second panel,
the first panel comprises a visual panel and an arc-shaped plate which are connected with the curved plate, and the arc-shaped plate is bent downwards;
the photoresist layer is arranged on the upper surface of the first panel, the lower surface of the lower panel and the outer surface of the curved plate; the photoresist layers on the first panel, the curved panel and the second panel form a closed loop;
the light resistance layer comprises a first light resistance layer and a second light resistance layer, the first light resistance layer is arranged on the U-shaped surrounding curved surface screen panel, and the second light resistance layer is arranged on the first light resistance layer;
the curved plate is a semicircular panel, one end of the curved plate is tangent to the bottom surface of the first panel, and the other end of the curved plate is tangent to the top surface of the second panel; the length of the first panel is greater than the length of the second panel.
Example 2
The spray exposure process for a U-shaped convoluted curved screen of embodiment 1, comprising the steps of:
1) cleaning the U-shaped surrounding curved surface screen panel for 2 times by adopting ultrapure water in sequence, cleaning the U-shaped surrounding curved surface screen panel for 3 times by adopting ethanol, and drying the cleaned U-shaped surrounding curved surface screen panel for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) placing the photoresist layer into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist layer into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist layer into an exposure device for exposure treatment, and taking down a covering object to obtain a U-shaped surrounding curved surface screen;
the negative photoresist comprises the following raw materials, by weight, 20 parts of hydroxyacrylic resin, 20 parts of epoxy acrylic resin, 20 parts of trimethylolpropane triacrylate, 2 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 4 parts of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, 10 parts of nano titanium dioxide, 2 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one, 3 parts of pigment and 100 parts of propylene glycol monomethyl ether acetate.
The thickness of the first photoresist layer is 2 μm, and the thickness of the second photoresist layer is 4 μm.
Example 3
The spray exposure process for a U-shaped convoluted curved screen of embodiment 1, comprising the steps of:
1) cleaning the U-shaped surrounding curved screen panel for 4 times by adopting ultrapure water in sequence, cleaning the U-shaped surrounding curved screen panel for 1 time by using ethanol, and drying the cleaned U-shaped surrounding curved screen panel for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) placing the photoresist layer into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist layer into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist layer into an exposure device for exposure treatment, and taking down a covering object to obtain a U-shaped surrounding curved surface screen;
the negative photoresist comprises the following raw materials of, by weight, 30 parts of hydroxyacrylic resin, 30 parts of epoxy acrylic resin, 30 parts of trimethylolpropane triacrylate, 4 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 7 parts of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, 15 parts of nano titanium dioxide, 4 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one, 5 parts of pigment and 150 parts of propylene glycol monomethyl ether acetate.
The thickness of the first photoresist layer is 3 μm, and the thickness of the second photoresist layer is 4 μm.
Example 4
The spray exposure process of the U-shaped wrap-around screen of example 1, comprising the steps of:
1) cleaning the U-shaped surrounding curved surface screen panel for 3 times by adopting ultrapure water in sequence, cleaning the U-shaped surrounding curved surface screen panel for 2 times by adopting ethanol, and drying the cleaned U-shaped surrounding curved surface screen panel for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) placing the photoresist layer into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist layer into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist layer into an exposure device for exposure treatment, and taking down a covering object to obtain a U-shaped surrounding curved surface screen;
the negative photoresist comprises the following raw materials of, by weight, 25 parts of hydroxyacrylic resin, 25 parts of epoxy acrylic resin, 25 parts of trimethylolpropane triacrylate, 3 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 5 parts of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, 12 parts of nano titanium dioxide, 3 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one, 4 parts of pigment and 120 parts of propylene glycol monomethyl ether acetate.
The thickness of the first photoresist layer is 3 μm, and the thickness of the second photoresist layer is 3 μm.
The U-shaped wrap-around screens obtained in examples 2 to 4 were subjected to reliability tests, and the results are shown in Table 1.
The reliability detection comprises an adhesion test, a hand sweat resistance test, a boiling test, an insulation resistance test, a dyne value, an opacity test and a chemical resistance test.
The adhesion test method is as follows:
1) detecting a sample to be detected, wherein the appearance is free from abnormal appearance;
2) using a sharp blade (the blade angle is 20-30 degrees, the blade thickness is 0.43 +/-0.03 mm) to cut 10 multiplied by 10 small grids of 1 multiplied by 1mm on the surface of the test sample;
3) brushing fragments in the test area with a brush; firmly sticking the tested small grid by using an adhesive tape with adhesive force of 3M610, and forcibly pressing the adhesive tape by using an eraser to remove air bubbles between the adhesive tape and the coating so as to increase the contact area and force between the adhesive tape and the tested area;
4) standing for 90 +/-30 seconds, grasping one end of the adhesive tape by a hand, pulling off the adhesive paper in the 60-degree direction within 0.5-1 second, and testing once;
5) after the test, the peeling condition of the paint coating is checked by using a 5-time magnifier.
Testing the tool: blade, 3M610 tape.
The hand perspiration resistance test method is as follows:
1) detecting a sample to be detected, wherein the appearance is free from abnormal appearance;
2) firstly, wiping the surface of a sample to be detected clean by using dust-free cloth;
3) wiping the surface of the sample to be detected for 2min by using dust-free cloth soaked by sweat;
4) standing for 2h in a normal temperature environment;
5) and visually detecting the appearance of the sample to be detected.
Testing the tool: artificial acid sweat and dust-free cloth.
The water boil test method is as follows:
1) visual inspection is carried out on a sample to be detected, and no abnormal phenomena such as scratching, scratches, falling and the like are ensured;
2) heating purified water and keeping the temperature at 80 +/-2 ℃;
3) completely putting a sample to be tested into hot water, boiling the sample in the hot water for 30min, taking out the sample, standing the sample at normal temperature for 2h, and cooling the sample to the room temperature;
4) and detecting that the surface of the sample to be detected is not abnormal, and carrying out an adhesion test according to an adhesion test method.
Testing the tool: a constant temperature water bath kettle.
The insulation resistance test method is as follows:
1) starting an insulation resistance tester, and adjusting a test gear to a 1000V gear;
2) wiping the surface of a photoresistance layer of a sample to be tested clean, wherein the distance between test surface pens is 10mm, and selecting 4 test points on the upper, lower, left and right sides of the surface of the photoresistance layer;
3) and putting a sample to be tested which is tested to be in accordance with the specification into 85 ℃, keeping the relative humidity at 85 percent for 240 hours, standing for 2 hours, and then recovering to 1) and 2) repeating the insulation resistance test.
Testing the tool: insulation resistance tester.
The dyne values were tested as follows:
placing a sample to be tested on a horizontal table, using a 34dyne or more test pen of Areateat, making a pen point and a test surface form a vertical 90-degree angle, and applying 0.5kgf to draw a 2-3cm long straight line within 2 seconds; and (5) after drawing a complete line for 5 seconds, observing the handwriting shrinkage condition, wherein the handwriting shrinkage condition is A, the handwriting shrinkage condition is B when the handwriting shrinkage condition is completely not shrunk, the handwriting shrinkage condition is C when the handwriting shrinkage condition reaches 70% of the original area, and the handwriting shrinkage condition is C when the handwriting shrinkage area is smaller than 70% of the original area.
Testing the tool: a dyne pen.
The opacity test method is to use a densitometer for testing.
The chemical resistance test method is as follows:
1) detecting a sample to be detected, wherein the appearance is free from abnormal appearance;
2) dipping absolute ethyl alcohol by using a surface stick, uniformly and continuously coating the absolute ethyl alcohol on the front surface and the back surface of a sample to be detected respectively on the principle of no dripping, and keeping for 15 min;
3) and (3) placing the sample to be detected at room temperature, and detecting the sample to be detected after 2 h.
Testing the tool: anhydrous ethanol.
TABLE 1 results of the experiment
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A screen for a U-shaped surround curve, comprising:
u-shaped surrounding curved screen panel;
a light resistance layer is arranged on the edge of the U-shaped surrounding curved surface screen panel;
the surrounding screen panel comprises a first panel, a second panel and a curved plate; the first panel is arranged above the second panel; one end of the curved plate is connected with the first panel, and the other end of the curved plate is connected with the second panel;
the first panel comprises a visual panel and an arc-shaped plate which are connected with the curved plate, and the arc-shaped plate is bent downwards;
the photoresist layer is arranged on the lower surface of the first panel, the upper surface of the second panel and the inner surface of the curved plate; the photoresist layers on the first panel, the curved panel and the second panel form a closed loop;
the light resistance layer comprises a first light resistance layer and a second light resistance layer, the first light resistance layer is arranged on the U-shaped surrounding curved face screen panel, and the second light resistance layer is arranged on the first light resistance layer.
2. The screen of claim 1, wherein the curved plate is a semicircular panel, and one end of the curved plate is tangent to the bottom surface of the first panel and the other end is tangent to the top surface of the second panel.
3. The screen of claim 1, wherein the length of the first panel is greater than the length of the second panel.
4. The screen of claim 1, wherein the end of the first panel distal from the curved plate is a curved end, and wherein a lower surface of the curved end is provided with a light blocking layer.
5. A spraying exposure process for a U-shaped surrounding curved screen is characterized by comprising the following steps:
1) cleaning the U-shaped surrounding curved screen panel with ultrapure water for 2-4 times in sequence, cleaning with ethanol for 1-3 times, and drying for later use;
2) covering a shelter in the display area of the U-shaped surrounding curved screen panel;
3) placing the U-shaped surrounding curved screen panel into a rotating angle spraying machine, performing primary spraying of a negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, cleaning the formed first photoresist layer by using a plasma cleaning machine, and then placing the cleaned first photoresist layer into an exposure device for exposure treatment;
4) and then placing the photoresist into a rotating angle spraying machine, carrying out secondary spraying on the negative photoresist by using a high-precision spray gun of the rotating angle spraying machine, placing the photoresist into a plasma cleaning machine for cleaning after a second photoresist layer is formed, then placing the photoresist into an exposure device for exposure treatment, and taking down the covering object to obtain the U-shaped surrounding curved screen.
6. The spray exposure process for a U-shaped curved screen as claimed in claim 5, wherein the negative photoresist comprises the following raw materials, by weight, 20-30 parts of hydroxyacrylic resin, 20-30 parts of epoxy acrylic resin, 20-30 parts of trimethylolpropane triacrylate, 2-4 parts of 2,4,6 (trimethylbenzoyl) diphenylphosphine oxide, 4-7 parts of γ - (2, 3-epoxypropoxy) propyltrimethoxysilane, 10-15 parts of nano titanium dioxide, 2-4 parts of 2-hydroxy-2-methyl-1-phenylpropyl-1-one, and 100-150 parts of propylene glycol monomethyl ether acetate.
7. The spray exposure process for a U-shaped convoluted curved panel of claim 5, wherein the thickness of the first photoresist layer is 2-3 μm and the thickness of the second photoresist layer is 3-4 μm.
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