CN111399102A - Foldable color filter and manufacturing method thereof - Google Patents

Foldable color filter and manufacturing method thereof Download PDF

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Publication number
CN111399102A
CN111399102A CN202010295365.7A CN202010295365A CN111399102A CN 111399102 A CN111399102 A CN 111399102A CN 202010295365 A CN202010295365 A CN 202010295365A CN 111399102 A CN111399102 A CN 111399102A
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ink
color filter
curing
filter film
blue
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CN202010295365.7A
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Chinese (zh)
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赖耀升
江建志
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Aeneq Co ltd
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Aeneq Co ltd
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Priority to CN202010295365.7A priority Critical patent/CN111399102A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)

Abstract

The invention relates to the technical field of display, and the technical scheme of the invention is as follows: a foldable color filter comprises an ultrathin glass substrate subjected to chemical toughening, wherein an explosion-proof film is arranged on the upper surface of the ultrathin glass substrate, a color filter film is printed on the lower surface of the ultrathin glass substrate, and the surface of the color filter film is plated with SiO2The protective layer is made of ultra-thin glass which is chemically tempered firstly, the tempered ultra-thin glass is used as a substrate of the color filter, the W _ O L ED display screen below the protective layer is effectively protected, the color W _ O L ED display panel is prevented from being crushed during touch operation, the Color Filter (CF) has an external light resistance function, a polaroid can be omitted, an attaching layer of the display screen is reduced, and the display screen is easier to bend.

Description

Foldable color filter and manufacturing method thereof
Technical Field
The invention relates to the technical field of display, in particular to a foldable color filter and a manufacturing method thereof.
Background
Currently, L G is used as a representative, namely, a W _ O L EDW (White-O L ED) technology is adopted, namely, a luminescent layer emits White light, and then the White-O L ED technology is used for filtering the White light through a color filter to emit light with different colors, so that the AMO L ED technology is mainly used for manufacturing medium and large panels such as television panels at present, and other manufacturers including samsung and domestic panel manufacturers mainly adopt an RGB-O L ED (Red Green Blue O L ED) technology, namely, the FMM (Fine Metal) precise Metal optical mask plate is used for evaporation, so that pixel points can respectively emit Red/Green/Blue three primary colors, and the Red/Green/Blue primary colors are superimposed into other colors through colored light, so that the AMO L ED technology is mainly used for manufacturing medium and small panels such as mobile phone panels at present.
The color filter, as an important device in L CD (L acquired Crystal Display) and W _ O L ED (white organic light emitting diode) Display structures, must also play an important role in the new generation of folding Display, however, the color filter in the current W _ O L ED technology is difficult to meet the requirement of folding a folding screen, and is not favorable for making a folding Display screen.
Disclosure of Invention
The invention aims to provide a foldable color filter and a manufacturing method thereof.
The technical purpose of the invention is realized by the following technical scheme:
the foldable color filter comprises an ultrathin glass substrate after chemical tempering, wherein an explosion-proof film is arranged on the upper surface of the ultrathin glass substrate, a color filter film is printed on the lower surface of the ultrathin glass substrate, and the surface of the color filter film is plated with SiO2And a protective layer.
The invention is further provided with: the thickness of the ultrathin glass substrate is 30-150 mu m.
The invention is further provided with: the color filter film is a three-color pixel filter film, the three-color pixels are respectively red, green and blue, the three-color pixels are arranged in an array mode, and BM ink layers are arranged at intervals.
The invention is further provided with: the color filter film is a four-color pixel filter film, the four-color pixels are respectively red, green, blue and transparent, the four-color pixels are arranged in an array, and BM ink layers are arranged at intervals.
A method for manufacturing a foldable color filter, which is used for manufacturing a three-color filter, comprises the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, after the ink is completely dried, coating SiO on the surface of the color filter coating layer by adopting a vacuum coating method of PVD or CVD2As a protective and insulating layer.
A method for manufacturing a foldable color filter, the four-color filter is manufactured by the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, printing blue ink in a transparent ink target area by adopting a pad printing device according to a preset transparent ink pattern template, and curing the transparent ink in a thermal curing or UV curing mode;
s7, after the ink is completely dried, coating SiO on the surface of the color filter coating layer by adopting a vacuum coating method of PVD or CVD2As a protective and insulating layer.
The foldable color filter is attached to the flexible W _ O L ED display panel to obtain the colorful foldable W _ O L ED display panel.
In conclusion, the invention has the following beneficial effects:
firstly, chemically toughening ultra-thin glass, wherein the toughened ultra-thin glass is used as a substrate of a color filter, so that a W _ O L ED display screen below the ultra-thin glass is effectively protected, the ultra-thin glass is prevented from being crushed during touch operation, and a colorful W _ O L ED display panel has foldability;
secondly, the Color Filter (CF) has the function of resisting external light, so that a polaroid can be omitted, an attaching layer of the display screen is reduced, and the display screen is easier to bend;
thirdly, the matched white light W _ O L ED display screen is simple in manufacturing process (no need of a precise metal mask plate FMM), low in cost and high in yield;
manufacturing CF in a gravure printing mode, so that the production speed is high, the material loss is low, the thickness of the printed color filter film is uniform, and the effect is good;
five, the surface of the color filter film layer is coated with SiO2The insulating layer is used as a protective and insulating layer and effectively isolates moisture and oxygen; so that the foldable color filter has a longer life.
Drawings
Fig. 1 is a schematic diagram of a structure of a foldable three-color filter.
Fig. 2 is a schematic structural diagram of a foldable four-color filter.
Fig. 3 is an operational view of the pad printing apparatus.
Fig. 4 is a schematic structural diagram of a color foldable W _ O L ED (white light + color filter) display panel.
The corresponding part names indicated by the numbers and letters in the drawings:
wherein: 1. an ink roller; 2. a gravure cylinder; 3. a pad printing roller; 4. cleaning the roller; 5. a scraper; 6. an ink bin; 7. a jig; 8. a workpiece; 10. an ultra-thin glass substrate; 20. an explosion-proof membrane; 30. a color filter film; 40. SiO22A protective layer; 50. and (4) an ink layer.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
Referring to fig. 1, the foldable color filter provided by the invention comprises an ultrathin glass substrate 10 after chemical tempering, wherein an explosion-proof film 20 is arranged on the upper surface of the ultrathin glass substrate 10, a color filter film 30 is printed on the lower surface of the ultrathin glass substrate 10, and a SiO2 protective layer 40 is plated on the surface of the color filter film 30; the thickness of the ultrathin glass substrate 10 is 30-150 μm; the color filter film 30 is a three-color pixel filter film, the three-color pixels are respectively red, green and blue, the three-color pixels are arranged in an array, and BM ink layers 50 are arranged at intervals.
The foldable color filter of the above technical scheme is a red, green and blue color filter, wherein the surface of the color filter film 30 is coated with SiO2The protective layer can be used as a protective and insulating layer and effectively isolate moisture and oxygen.
Referring to fig. 2, the foldable color filter provided by the invention comprises an ultrathin glass substrate 10 after chemical tempering, wherein an explosion-proof film 20 is arranged on the upper surface of the ultrathin glass substrate 10, a color filter film 30 is printed on the lower surface of the ultrathin glass substrate 10, and the surface of the color filter film 30 is plated with SiO2A protective layer 40; the thickness of the ultrathin glass substrate 10 is 30-150 μm; the color filter film 30 is a four-color pixelFour-color pixels of the filter film are respectively red, green, blue and transparent, the four-color pixels are arranged in an array, and BM ink layers 50 are arranged at intervals.
The foldable color filter of the above technical scheme is a red, green, blue and transparent four-color filter, wherein the surface of the color filter film 30 is plated with SiO2The protective layer can be used as a protective and insulating layer and effectively isolate moisture and oxygen.
A method for manufacturing a foldable color filter, which is used for manufacturing a three-color filter, comprises the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, after the ink is completely dried, coating SiO on the surface of the color filter coating layer by adopting a vacuum coating method such as PVD or CVD and the like2As a protective and insulating layer.
A method for manufacturing a foldable color filter, the four-color filter is manufactured by the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, printing blue ink in a transparent ink target area by adopting a pad printing device according to a preset transparent ink pattern template, and curing the transparent ink in a thermal curing or UV curing mode;
s7, after the ink is completely dried, SiO2 is plated on the surface of the color filter coating layer by a vacuum coating method such as PVD or CVD and the like to be used as a protective and insulating layer.
The ultrathin glass is ultrathin toughened glass with the thickness of 30-150 micrometers, preferably the ultrathin toughened glass with the thickness of about 50 micrometers, and the German Schottky company has started to supply flexible glass with the thickness of 25-100 micrometers in batches in 2013, the width of the flexible glass is about 50cm, the length of the flexible glass is hundreds of meters, the Japan Asahi glass company is made into the flexible glass SPOO L with the thickness of 0.05 millimeter by a float process in 2014, and Chinese patent CN104045221B discloses a preparation method of the flexible ultrathin glass.
In the above technical solution, the adopted gravure pad printing device is shown in fig. 3, and includes a frame, an ink cylinder 1, a gravure cylinder 2, a pad printing cylinder 3 and a cleaning cylinder 4 which are in contact with each other in sequence are provided in the frame, a scraper 5 is provided on a side surface of the gravure cylinder 2, a part of the ink cylinder 1 is immersed in an ink bin 6, a movable jig 7 is provided below the pad printing cylinder 3, a workpiece 8 to be printed is provided on the jig 7, and the specific structure of the gravure pad printing device can refer to patent No. 201920381009. X; 201920705690.9 and 201920705687.7.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A foldable color filter comprises an ultrathin glass substrate (10) after chemical toughening, and is characterized in that: the upper surface of ultra-thin glass substrate (10) is equipped with rupture membrane (20), the lower surface printing of ultra-thin glass substrate (10) has colored filter coating (30), colored filter coating (30) surface has been plated SiO2A protective layer (40).
2. The foldable color filter according to claim 1, wherein: the thickness of the ultrathin glass substrate (10) is 30-150 mu m.
3. The foldable color filter according to claim 1, wherein: the color filter film (30) is a three-color pixel filter film, the three-color pixels are respectively red, green and blue, the three-color pixels are arranged in an array, and BM ink layers (50) are arranged at intervals.
4. The foldable color filter according to claim 1, wherein: the color filter film (30) is a four-color pixel filter film, the four-color pixels are respectively red, green, blue and transparent, the four-color pixels are arranged in an array, and BM ink layers (50) are arranged at intervals.
5. A method for manufacturing a foldable color filter is characterized in that the method for manufacturing the three-color filter comprises the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, after the ink is completely dried, coating SiO on the surface of the color filter coating layer by adopting a vacuum coating method of PVD or CVD2As a protective and insulating layer.
6. A method for manufacturing a foldable color filter is characterized in that the method for manufacturing the four-color filter comprises the following steps:
s1, adopting the chemically tempered glass with the thickness of 30-150 mu m as a substrate of the color filter, then printing an explosion-proof film on the upper surface of the ultrathin glass substrate, turning over and entering the next step;
s2, printing BM ink patterns in a pixel region according to a preset BM pattern template by adopting gravure pad printing equipment, and carrying out thermal curing or UV curing on the BM ink;
s3, printing red ink in the red filter film area by adopting gravure pad printing equipment according to a preset red filter film pattern template, and carrying out thermal curing or UV curing on the red ink;
s4, printing green ink in the green filter film area by adopting gravure pad printing equipment according to a preset green filter film pattern template, and carrying out thermal curing or UV curing on the green ink;
s5, printing blue ink in the blue filter film area by adopting gravure pad printing equipment according to a preset blue filter film pattern template, and carrying out thermal curing or UV curing on the blue ink;
s6, printing blue ink in a transparent ink target area by adopting a pad printing device according to a preset transparent ink pattern template, and curing the transparent ink in a thermal curing or UV curing mode;
s7, after the ink is completely dried, coating SiO on the surface of the color filter coating layer by adopting a vacuum coating method of PVD or CVD2As a protective and insulating layer.
CN202010295365.7A 2020-04-15 2020-04-15 Foldable color filter and manufacturing method thereof Withdrawn CN111399102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010295365.7A CN111399102A (en) 2020-04-15 2020-04-15 Foldable color filter and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010295365.7A CN111399102A (en) 2020-04-15 2020-04-15 Foldable color filter and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN111399102A true CN111399102A (en) 2020-07-10

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CN202010295365.7A Withdrawn CN111399102A (en) 2020-04-15 2020-04-15 Foldable color filter and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN111399102A (en)

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Application publication date: 20200710