CN104407468B - 3D (three dimensional) printing-based method for preparing color filtering film - Google Patents
3D (three dimensional) printing-based method for preparing color filtering film Download PDFInfo
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- CN104407468B CN104407468B CN201410237599.0A CN201410237599A CN104407468B CN 104407468 B CN104407468 B CN 104407468B CN 201410237599 A CN201410237599 A CN 201410237599A CN 104407468 B CN104407468 B CN 104407468B
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
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- Optical Filters (AREA)
Abstract
The invention aims at providing a preparation method for forming a color filtering film by employing a 3D (three dimensional) printing technology. According to the method, the condition that the color filtering film is few in defects, high in accuracy and simple in preparation process can be ensured; the preparation method for achieving the technical problems comprises the following processes: firstly, printing a black matrix by adopting a 3D printing form of ultraviolet exposure, melting or laser sintering; secondly, printing a three primary color coloring layer by adopting the 3D printing form of ultraviolet exposure; finally, printing a protective layer and a transparent conductive electrode at one step by adopting the 3D printing form of ultraviolet exposure, melting or laser sintering.
Description
Technical field
The present invention relates to a kind of colour filter membrane preparation method based on 3D printing, it is applied to colour filter film preparation.
Background technology
Color filter is the core component that colored display realized by liquid crystal display, and it is determining the same of display pannel color characteristic
When, the quality of its quality also affects the contrast of display, brightness and surface reflection.Its structure mainly includes：Glass substrate, black
Matrix, three primary colours dyed layer, protective layer and transparent conductive electrode.At present, prepare the technical matters phase of color filter film
Work as maturation, but because the preparation cost of color filter film accounts for the 20%-30% of whole panel totle drilling cost, and current preparation work
There are a lot of shortcomings in skill.
The Main Function of black matrix is that incident light is covered, thus improving contrast and excitation, therefore it is required that black
Matrix has high light-proofness, antiradar reflectivity, low thickness and high-precision densification.Currently used as black matrix material be mainly crome metal,
Two layers of chromium film of crome metal/chromium oxide and resin carbon black.Wherein, the thickness of crome metal can control in 0.1 mm, but by
In its reflectivity up to more than 50%, it is not therefore preferable black matrix material.And two layers of chromium film of crome metal/chromium oxide are recognized
For being preferable antiradar reflectivity film, it is primarily due to its reflectivity 5% about and thickness can be controlled in 0.15 mm, but
The preparation of two membranes makes its technological process complicate.The reflectivity of resin carbon black is typically below 0.5%, but its thickness is but 1
Mm about.In addition, preparing resin carbon black at present generally adopt wet method photoetching technique, this technique is to pollution environment, complex steps, limit
Make the raising of volume production efficiency.
The preparation of three primary colours dyed layer is the key technology in color filter preparation process.The preparation method commonly used at present includes
Pigment dispersion method, decoration method, print process, electrodeposition process and spraying process etc., wherein pigment dispersion method are prevailing technology.Pigment disperses
Method and decoration method all need to adopt photoetching technique, therefore technical sophistication and relatively costly；And print process and electrodeposition process prepare
Color filter flatness poor, need to plane extruding or polishing so that its flatness is improved；The filter of spraying process preparation
Color film is relatively inaccessible to the requirement that flatness is high and primitive shape is homogeneous.
The effect of protective layer is to protect three primary colours dyed layer not contaminated, reduces the thickness change of color filter pattern, improves
Its physics and chemical stability, therefore it is required that protective layer has, planarization is good, the high feature of transmitance.At present, make protective layer
Method mainly include chromium shading method, combined method, electrodeposition process, resin B M method and back side lithography process, and these methods will be adopted
With photoetching technique, therefore technological process is complicated and relatively costly.
Transparent conductive electrode will have good electrical characteristics, the transparency and reliability.The main method of preparation includes at present
Vapour deposition method and sputtering method.The tack of the transparent conductive electrode of vapour deposition method preparation is poor and repeated bad, and two methods
Requirement to preparation condition is all higher.
Additionally, often there are a lot of defects using the color filter film of traditional handicraft preparation, wherein microcosmic point defect includes：
White point, colour mixture point, protrusion defect, light shield layer pattern anomalies and hole defect etc., this mainly due to traditional handicraft precision not
Enough height；Macroscopical planar defect mainly includes foreign matter defect, ito transparent electrode defect etc., and this is mainly due to the process of traditional handicraft
Complicated and be unable to reach the good requirement of each film interlayer physical plyability.3D printing technique has that processing step is simple, precision is high
Feature, also can make to reach good physics between each film layer and be combined, therefore can be used as the ideal technology preparing color filter film
Technology.
Content of the invention
It is an object of the invention to provide a kind of colour filter membrane preparation method based on 3D printing, contribute to solving traditional work at present
Under skill the problems such as colorized optical filtering film preparation defect.
Technical program of the present invention lies in：
A kind of colour filter membrane preparation method based on 3D printing it is characterised in that：Carry out as follows：
1）Write and meet black matrix 3D printing head, blue-colored layer 3D printing head, green colored layer 3D printing head and redness
Dyed layer 3D printing head, protective layer 3D printing head, transparent conductive electrode 3D printing head motion path program, to meet structure
Form needs to be defined；
2）From plate glass or organic plastics as substrate, put into after the cleaning process in 3D printer, using single
Or array black matrix 3D printing head prints the black matrix of fine pattern；
3）Between the black matrix of printing shaping, using blue-colored layer 3D printing head, green colored layer 3D printing
Head and the three primary colours dyed layer of red colored layer 3D printing head printing color filter；
4）On gap and the surface of the blue-colored layer, green colored layer and red colored layer of printing shaping, using protection
Layer 3D printing head prints protective layer；
5）On the protective layer of printing shaping, print transparency conductive electrode using transparency conductive electrode 3D printing head.
Wherein, step 2）The 3D printing form being adopted is one of uv-exposure, melting or laser sintered three kinds；
By software, array 3D printing head is controlled, prints the black matrix of suitable three primary colours dyed layer configuration；And control black
The thickness of matrix is 0.1 mm -2.0 mm, and width is 10 mm；The material selection crome metal of described black matrix, crome metal/
Chromium oxide, resin carbon black.
Step 3）The pigment or dyestuff that are used for three primary colours dyed layer are mixed in proportion with liquid photosensitive resin respectively,
It is added separately in blue pigment or dyestuff sap cavity, viridine green or dyestuff sap cavity and red pigment or dyestuff sap cavity；It is used in
The mixing material of the pigment of three primary colours dyed layer or dyestuff and liquid photosensitive resin is respectively from blue-colored layer 3D printing head, green
Dyed layer 3D printing head and red colored layer 3D printing head extrusion, then with wavelength be 325nm, intensity be 30mw ultraviolet lighting
The mixing material penetrating extrusion makes it solidify rapidly, forms blue-colored layer, green colored layer and red colored layer respectively；By soft
Part blue-colored layer 3D printing head, green colored layer 3D printing head and red colored layer 3D printing head are controlled so as to
After having printed a pixel, carry out the movement of two pixel units all around, thus completing the coloring of full wafer color filter three primary colours
The printing of layer；And the thickness of controllable three primary colours dyed layer is 1.0 mm -2.0 mm, width is respectively 100 mm；Described
The configuration mode of three primary colours dyed layer be triangle, square, linear, mosaic shape.
Step 4）The 3D printing form being adopted is one of uv-exposure, melting or laser sintered three kinds；Pass through
Software is controlled so as to carrying out all around and moving up and down to linear array formula protective layer 3D printing head, by protective layer
Be uniformly filled in the gap of blue-colored layer, green colored layer and red colored layer, and be equably laid in blue-colored layer,
Green colored layer and the surface of red colored layer, protect to three primary colours dyed layer；And by software, thickness is controlled,
Form the uniform cap layer that thickness is 0.5 mm -2.5 mm；The material that described protective layer is adopted can be acryl tree
The transparent materials such as fat, allyl resin, polyurethane resin, epoxy resin, polyamide, silicone resin.
Step 5）The 3D printing form being adopted is one of uv-exposure, melting or laser sintered three kinds；Pass through
Software is controlled to the movement of linear array formula transparency conductive electrode 3D printing head, makes position and the width of transparency conductive electrode
Corresponding with bottom electrode.
It is an advantage of the current invention that：
Preparation process is simple of the present invention, easy, fineness, yields, production efficiency and the fall of color filter can be effectively improved
Low cost.
Brief description
Fig. 1 is the color filter schematic diagram that three primary colours dyed layer configuration mode is triangle；
Fig. 2 is the printing equipment of the color filter being configured to triangle preparing three primary colours dyed layer using 3D printing technique
Schematic diagram；
Fig. 3 is the schematic diagram preparing black matrix using 3D printing technique；
Fig. 4 is the schematic diagram of the three primary colours dyed layer being configured to triangle using 3D printing technique preparation；
Fig. 5 is the schematic diagram preparing protective layer using 3D printing technique；
Fig. 6 is the schematic diagram preparing transparency conductive electrode using 3D printing technique.
Specific embodiment
It is that the features described above of the present invention and advantage can be become apparent, special embodiment below, make in detail in conjunction with accompanying drawing
It is described as follows.
Hereinafter by specific embodiment, the present invention will be described in further detail.Refering to Fig. 1, Fig. 2, Fig. 3, Fig. 4, figure
5 and Fig. 6, Fig. 1 are the color filter schematic diagram that three primary colours dyed layer configuration mode is triangle, and Fig. 2 is using 3D printing technique system
Standby three primary colours dyed layer is configured to the schematic diagram of the printing equipment of color filter of triangle, and Fig. 3 is using 3D printing technique preparation
The schematic diagram of black matrix, Fig. 4 is the schematic diagram of the three primary colours dyed layer being configured to triangle using 3D printing technique preparation, Fig. 5
It is the schematic diagram preparing protective layer using 3D printing technique, Fig. 6 is the signal preparing transparency conductive electrode using 3D printing technique
Figure.
Described three primary colours dyed layer configuration mode is that the color filter of triangle includes 111 plate glass, 121 metal chrome black
Matrix, 131 blue-colored layers, 132 green colored layer, 133 red colored layers, 141 acryl resin protective layers and 151ITO are saturating
Bright conductive electrode.Wherein, 131 blue-colored layers, 132 green colored layer and the configuration triangular in shape of 133 red colored layers, 121 gold medals
The micrographics belonging to chrome black matrix is corresponding with the triangular arrangement mode of three primary colours dyed layer.
Described is included using the printing equipment that 3D printing technique prepares color filter：211 crome metal melt chamber, 212 black squares
Battle array 3D printing head, 221 blue pigment sap cavities, 222 blue-colored layers of 3D printing head, 231 viridine green sap cavities, 232 green coloring
Layer 3D printing head, 241 red pigment sap cavities, 242 red colored layers of 3D printing head, 251 acryl resin melt chamber, 252 protection
Layer 3D printing head, 261 indium-tin oxide powder chamber chambeies, 262ITO transparency conductive electrode 3D printing head.Wherein, 222 blue-colored layers of 3D
Printhead, 232 green colored layer 3D printing heads and 242 red colored layers of 3D printing configuration triangular in shape, that is, with three primary colours
Configuration mode is consistent.Wherein, 212 black matrix 3D printing heads, 252 protective layer 3D printing heads and 262ITO transparency conductive electrode 3D are beaten
Print head linear array distribution.
The present invention is through the following steps that realizing：
1st, black matrix is printed by 3D printing technique
From plate glass 111 as substrate, put into after the cleaning process in 3D printer, using linear array formula 212
Black matrix 3D printing head prints the black matrix of fine pattern.
The 211 crome metal melt chamber that crome metal powder is added to 3D printer carry out fast thawing, control temperature at 1858 DEG C
It is at semi-cured state, solidify rapidly after 212 black matrix 3D printing head extrusions, form crome metal film.By software pair
Array 3D printing head is controlled, and prints 121 crome metal black matrix of suitable three primary colours dyed layer triangularity configuration.And
The thickness controlling 121 crome metal black matrix is 0.1 mm -2.0 mm, and width is 10 mm.
2nd, three primary colours dyed layer is printed by 3D printing technique
Between 121 crome metal black matrix of printing shaping, beaten using the 222 blue-colored layers of 3D configuring in triangle
The three primary colours dyed layer of print head, 232 green colored layer 3D printing heads and 242 red colored layers of 3D printing head printing color filter.
The pigment being used for three primary colours dyed layer is mixed in proportion with liquid photosensitive resin respectively, is added separately to
In 221 blue pigment sap cavities, 231 viridine green sap cavities and 241 red pigment sap cavities.Be used in the pigment of three primary colours dyed layer with
The mixing material of liquid photosensitive resin is respectively from 222 blue-colored layers of 3D printing head, 232 green colored layer 3D printing heads and 242
Red colored layer 3D printing head extrusion, then with wavelength be 325nm, intensity be 30mw ultraviolet light extrusion mixing material
So that it is solidified rapidly, form 131 blue-colored layers, 132 green colored layer and 133 red colored layers respectively.By software to being in
222 blue-colored layers of 3D printing head of triangular arrangement, 232 green colored layer 3D printing heads and 242 red colored layers of 3D printing
Head is controlled so as to after having printed a pixel, carry out the movement of two pixel units all around, thus completing full wafer
The printing of color filter three primary colours dyed layer.And the thickness of controllable three primary colours dyed layer is 1.0 mm -2.0 mm, width is respectively
For 100 mm about.
3rd, 3D printing technique prints protective layer
In gap and the surface of the 131 blue-colored layers, 132 green colored layer and 133 red colored layers of printing shaping, profit
Print protective layer with 252 protective layer 3D printing heads of linear array.
Acryl resin is added to 251 acryl resin melt chamber and carries out fast thawing, control temperature to be at 141 DEG C
Semi-cured state.When the acryl resin of semi-solid preparation solidifies rapidly after 252 protective layer 3D printing heads are extruded, in 131 bluenesss
The gap of chromatograph, 132 green colored layer and 133 red colored layers and surface solidify rapidly, form 141 acryl resin protections
Layer.By software, linear array formula 252 protective layer 3D printing head is controlled so as to carry out all around and on move down
Dynamic, 141 acryl resin protective layers are uniformly filled in 131 blue-colored layers, 132 green colored layer and 133 red colored
The gap of layer, and equably it is laid in the surface of 131 blue-colored layers, 132 green colored layer and 133 red colored layers, to three
Primary colours dyed layer is protected.And by software, thickness is controlled, form that thickness is 0.5 mm -2.5 mm uniform 141
Acryl resin protective layer.
4th, 3D printing technique prints transparent conductive electrode
On 141 acryl resin protective layers of printing shaping, using the 262ITO transparency conductive electrode of linear array
3D printing head prints transparent conductive electrode.
Indium-tin oxide powder is added in 261 indium-tin oxide powder chambeies, transparent to linear array formula 262ITO by software
The movement of conductive electrode 3D printing head is controlled so as to width is corresponding with bottom electrode width and position with path.In oxidation
Indium tin powder flow out from 261 indium-tin oxide powder chambeies after with wavelength be more than 1064nm laser irradiate indium-tin oxide powder so as to
Dissolve rapidly solidify afterwards shaping.Finally the excessive powder not having to solidify is removed, obtain 151ITO transparency conductive electrode.By soft
Part is controlled to the movement of linear array formula 262ITO transparency conductive electrode 3D printing head, makes the position of transparent conductive electrode
Put and width is corresponding with bottom electrode.
Depending on the configuration mode of above-mentioned black matrix is according to the configuration mode of three primary colours, if three primary colours are triangular arrangement,
Then black matrix also triangularity configuration；If three primary colours are square, linear or mosaic shape configuration, black matrix is latticed joining
Put.It is black that the material of 3D printing black matrix can select crome metal, crome metal/chromium oxide, resin carbon black or other can serve as
The material of matrix.
The 3D printing form of above-mentioned black matrix can print or linear or face for a printhead is quickly mobile
Shape array printing head printing speed.The printing path of printhead is configured according to the collocation form of black matrix, printhead
Array format is selected according to the collocation form of black matrix.Control translational speed and the motion direction control of printhead by software
The thickness of black matrix processed is 0.1 mm -2.0 mm, and width is 10 mm.
The configuration mode of above-mentioned three primary colours dyed layer can be triangle, square, linear, mosaic shape or other
Possible configuration mode.The material of 3D printing three primary colours dyed layer can be pigment can also be dyestuff.
The 3D printing form of above-mentioned three primary colours can print or patterned for a printhead is quickly mobile
Array printing head is quickly mobile to be printed.When the quickly mobile printing of a printhead, control the movement of printhead by software
Speed and motion direction, a kind of dyed layer of color are printed and after terminating, other colors are being printed.When patterned battle array
Column printhead quickly moves when printing, and the spread geometry of printhead is identical with the configuration mode of three primary colours, by software control
The translational speed of printhead, motion direction and displacement control the live width of three primary colours dyed layer be 70 mm about and thickness be 1
Mm about, and pigment particle size is controlled in 0.1 below mm.
The material that above-mentioned protective layer is adopted can be acryl resin, allyl resin, polyurethane resin, epoxy type tree
The transparent materials such as fat, polyamide, silicone resin.
The 3D printing form of above-mentioned protective layer can be that a printhead is quickly mobile to be printed or linear or face
The printhead of shape array is quickly mobile to be printed.When the quickly mobile printing of a printhead, printhead is controlled by software
Highly, translational speed prints uniform protective layer on the surface of three primary colours dyed layer and gap.When adopting array printing head, beat
Print head should be height distribution, so ensure that the surface of three primary colours dyed layer and gap print protective layer simultaneously, again by
The translational speed of software control array printing head and the protective layer that motion direction print thickness is 0.5 mm -2.5 mm.
Above-mentioned transparency conductive electrode becomes corresponding relation with pixel electrode, can be transparent conductive electrode or other
Transparency conductive electrode.
The 3D printing form of above-mentioned transparency conductive electrode can be that a printhead is quickly mobile to be printed or line
Property or the printhead of planar array quickly mobile print.The translational speed of printhead and motion direction is controlled to control by software
The thickness of black matrix is in 1.5 mm.
Above-mentioned 3D printing technique, when printing each construction, can one in front and one in back be carried out it is also possible to tie one simultaneously
Structure prints the printing carrying out next structure after terminating again.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (5)
1. a kind of colour filter membrane preparation method based on 3D printing it is characterised in that：Carry out as follows：
1）Write and meet black matrix 3D printing head, blue-colored layer 3D printing head, green colored layer 3D printing head and red colored
Layer 3D printing head, protective layer 3D printing head, transparent conductive electrode 3D printing head motion path program, are formed with meeting structure
Needs are defined；
2）From plate glass or organic plastics as substrate, put into after the cleaning process in 3D printer, using single or battle array
Column black matrix 3D printing head prints the black matrix of fine pattern；
3）Between the black matrix of printing shaping, using blue-colored layer 3D printing head, green colored layer 3D printing head and
Red colored layer 3D printing head prints the three primary colours dyed layer of color filter；
4）On gap and the surface of the blue-colored layer, green colored layer and red colored layer of printing shaping, using protective layer 3D
Printhead prints protective layer；
5）On the protective layer of printing shaping, print transparency conductive electrode using transparency conductive electrode 3D printing head.
2. a kind of colour filter membrane preparation method based on 3D printing according to claim 1 it is characterised in that：Step 2）Institute
Using 3D printing form be one of uv-exposure, melting or laser sintered three kinds；By software, array 3D is beaten
Print head is controlled, and prints the black matrix of suitable three primary colours dyed layer configuration；And control black matrix thickness be 0.1 mm-
2.0 mm, width is 10 mm；The material of described black matrix selects crome metal, chromium oxide or resin carbon black.
3. a kind of colour filter membrane preparation method based on 3D printing according to claim 1 it is characterised in that：Step 3）Will
Pigment for three primary colours dyed layer or dyestuff are mixed in proportion with liquid photosensitive resin respectively, are added separately to blue face
In material or dyestuff sap cavity, viridine green or dyestuff sap cavity and red pigment or dyestuff sap cavity；It is used in the face of three primary colours dyed layer
The mixing material of material or dyestuff and liquid photosensitive resin respectively from blue-colored layer 3D printing head, green colored layer 3D printing head and
Red colored layer 3D printing head extrusion, then with wavelength be 325nm, intensity be 30mw ultraviolet light extrusion mixing material
So that it is solidified rapidly, form blue-colored layer, green colored layer and red colored layer respectively；By software to blue-colored layer 3D
Printhead, green colored layer 3D printing head and red colored layer 3D printing head are controlled so as to after having printed a pixel,
Carry out the movement of two pixel units all around, thus completing the printing of full wafer color filter three primary colours dyed layer；And control three
The thickness of primary colours dyed layer is 1.0 mm-2.0 mm, and width is respectively 100 mm；The configuration mode of described three primary colours dyed layer
It is triangle, square, linear or mosaic shape.
4. a kind of colour filter membrane preparation method based on 3D printing according to claim 1 it is characterised in that：Step 4）Institute
Using 3D printing form be one of uv-exposure, melting or laser sintered three kinds；By software to linear array formula
Protective layer 3D printing head is controlled, so as to carrying out all around and moving up and down, protective layer being uniformly filled in blueness
The gap of dyed layer, green colored layer and red colored layer, and equably it is laid in blue-colored layer, green colored layer and redness
The surface of dyed layer, protects to three primary colours dyed layer；And by software, thickness is controlled, forming thickness is 0.5mm-
The uniform cap layer of 2.5 mm；The material that described protective layer is adopted be acryl resin, allyl resin, polyurethane resin,
Epoxy resin, polyamide or silicone resin transparent material.
5. a kind of colour filter membrane preparation method based on 3D printing according to claim 1 it is characterised in that：Step 5）Adopted
3D printing form is uv-exposure, one of melting or laser sintered three kinds；Saturating to linear array formula by software
The movement of bright conductive electrode 3D printing head is controlled, and makes the position of transparency conductive electrode and width corresponding with bottom electrode.
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| CN104723562B (en) * | 2015-04-05 | 2017-01-11 | 山东智慧生活数据系统有限公司 | Matrix type 3D printer |
| JP6991981B2 (en) * | 2016-02-24 | 2022-01-13 | マジック リープ， インコーポレイテッド | Thin interconnect for light emitters |
| CN105576099B (en) * | 2016-03-04 | 2019-01-11 | 太原理工大学 | Method based on 3D printing preparation LED component electrode |
| CN105957931B (en) * | 2016-06-07 | 2018-08-31 | 太原理工大学 | The method for preparing photon crystal structure LED based on 3D printing |
| CN106094358B (en) * | 2016-08-09 | 2018-10-30 | 深圳市华星光电技术有限公司 | The processing procedure of liquid crystal cell and its black matrix |
| CN107608179B (en) * | 2017-10-19 | 2020-11-13 | 京东方科技集团股份有限公司 | Color resistance material for color film substrate and preparation method of color resistance pattern of color film substrate |
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