CN108051944A - A kind of method and colored filter of the colored filter for preparing low segment difference - Google Patents
A kind of method and colored filter of the colored filter for preparing low segment difference Download PDFInfo
- Publication number
- CN108051944A CN108051944A CN201711482264.5A CN201711482264A CN108051944A CN 108051944 A CN108051944 A CN 108051944A CN 201711482264 A CN201711482264 A CN 201711482264A CN 108051944 A CN108051944 A CN 108051944A
- Authority
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- China
- Prior art keywords
- barricade
- colored filter
- ink layer
- black matrix
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000007641 inkjet printing Methods 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 230000009477 glass transition Effects 0.000 claims description 4
- 238000001723 curing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000013007 heat curing Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- G02F1/133512—Light shielding layers, e.g. black matrix
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Filters (AREA)
Abstract
The colored filter for providing a kind of method of colored filter for preparing low segment difference and being obtained by this method.It the described method comprises the following steps：Black matrix" separated from one another is formed on substrate；On black matrix" coat barricade material and perform it is exposed and developed, to form barricade, wherein, barricade material be residual film ratio be less than 50% material；Ink is sprayed in the gap of black matrix", so as to form ink layer by inkjet printing；High temperature process is performed to the substrate for being formed with ink layer, to remove the solvent in ink layer and cure ink layer, and barricade is made to carry out the gentle film contracting of hot-fluid, so as to form colored filter on substrate.
Description
Technical field
The present invention relates to a kind of colored filters of low segment difference, and in particular, to a kind of colorized optical filtering for preparing low segment difference
The method of piece and the colored filter obtained by this method.
Background technology
In recent years, inkjet printing technology is used to make colored filter.In general, it prevents from making using barricade
The ink colour mixture problem of the colors such as red, green and blue in journey.In red, green and blue ink, solvent composition account for the 60wt% of ink~
80wt%, therefore the thickness for curing cephacoria (red, green and blue film) is about 5 μm~6 μm, and with solvent volatilization when curing, it is remaining
The thickness of film (the red, green and blue film after curing) is about 1.0 μm~2.0 μm.Ink colour mixture during inkjet printing is asked in order to prevent
Topic, the height of barricade is usually arranged as 4 μm~6 μm, thus the segment difference between the RGB film and barricade after curing for 3.5 μm~
4.5μm。
The content of the invention
The present invention provides it is a kind of using inkjet printing technology make with low segment difference colored filter method, effectively
Solve the problems, such as that above-mentioned segment difference is higher.
The exemplary embodiment of the present invention provides a kind of methods for the colored filter for preparing low segment difference, and the method can
To comprise the following steps：Black matrix" separated from one another is formed on substrate；Barricade material is coated on black matrix" and is held
Row is exposed and developed, to form barricade, wherein, barricade material is the material that residual film ratio is less than 50%；In the gap of black matrix"
Middle spraying ink, so as to form ink layer by inkjet printing；High temperature process is performed to the substrate for being formed with ink layer, with removal
Solvent in ink layer simultaneously cures ink layer, and barricade is made to carry out the gentle film contracting of hot-fluid, colored so as to be formed on substrate
Optical filter.
Exemplary embodiment according to the present invention, the glass transition temperature of barricade material can 150 DEG C~200 DEG C it
Between.
Exemplary embodiment according to the present invention performs after developing on black matrix" and is performing inkjet printing
Before step, hard baking processing is not carried out to barricade.
Exemplary embodiment according to the present invention, can be by toasting 20 minutes~30 points of substrate at 200 DEG C~230 DEG C
Clock performs the high temperature process.
Exemplary embodiment according to the present invention, the thickness of barricade is 4 μm~5 μm before high temperature process, the thickness of barricade
Degree is 2.0 μm~2.5 μm after high temperature process, and the thickness of ink layer is 1 μm~2 μm after high temperature process.
Exemplary embodiment according to the present invention, the thickness of black matrix" is about 0.5 μm~1.5 μm.
Exemplary embodiment according to the present invention, the segment difference of the colored filter is 1.5 μm~2.0 μm.
Exemplary embodiment according to the present invention, the method further include：After high temperature process is performed, the shape on substrate
Into covering barricade and the upper coating of ink layer.
Exemplary embodiment according to the present invention, the thickness of the upper coating are 2.0 μm~2.5 μm, segment difference for 0.2 μm~
0.3μm。
The exemplary embodiment of the present invention provides a kind of colored filter of low segment difference, the segment differences of the colored filter
It can be 1.5 μm~2.0 μm.
The exemplary embodiment of the present invention provides a kind of colored filter of low segment difference, the segment differences of the colored filter
It can be 0.2 μm~0.3 μm.
Description of the drawings
Fig. 1 to Fig. 4 is cuing open for each step for the method that exemplary embodiment according to the present invention prepares colored filter
View.
Fig. 5 shows the sectional view of colored filter in accordance with an alternative illustrative embodiment of the present invention.
Fig. 6 is the sectional view of the colored filter prepared according to the prior art.
Specific embodiment
The present invention can be changed changeably and can have various embodiments, be will be illustrated in the drawings and retouched in detail
State the specific example of the present invention.It will be understood, however, that without departing from the scope and spirit of the present invention, the present invention
Specifically disclosed form is not limited to, but including all modifications, equivalent and replacement.
The embodiment of the present invention is reference will now be made in detail to now, the example of the embodiment is shown in the drawings, wherein, it is identical
Label refers to identical component always.It will illustrate the embodiment by referring to accompanying drawing below, to explain the present invention.
Fig. 1 to Fig. 4 is cuing open for each step for the method that exemplary embodiment according to the present invention prepares colored filter
View.
With reference to Fig. 1, the black matrix" 110 separated at a predetermined interval is formed on the substrate 100.Such as photoetching may be employed
Black matrix" 110 is formed etc. any suitable method.Exemplary embodiment according to the present invention, the thickness of black matrix" 110
It it is about 0.5 μm~1.5 μm, for example, can be preferably 1 μm.Substrate 100 can be glass substrate, quartz base plate or transparent tree
Aliphatic radical plate etc., the material of black matrix" 110 can be lighttight photoresist, for example, lighttight resin etc..However, this
Invent it is without being limited thereto, those skilled in the art can select under the teachings of the present invention suitable material be used as substrate and black square
Battle array.
With reference to Fig. 2, barricade (or being " block piece ") 120 is formed on black matrix" 110.It is according to the present invention exemplary
Barricade material can be coated on black matrix" 110, however development is exposed to it by embodiment first, so as in black
The barricade 120 of predetermined thickness is formed on matrix 110.As shown in Fig. 2, the barricade 120 formed has predetermined thickness (that is, barricade
120 height) t1, exemplary embodiment according to the present invention, the thickness t1 of barricade 120 can in the range of 4 μm~6 μm,
Preferably at 4 μm~5 μm.
Exemplary embodiment according to the present invention, barricade material are that residual film ratio (film thickness before film thickness ÷ cures after curing) is less than
50% material, also, the glass transition temperature (Tg) of barricade material is between 150 DEG C~200 DEG C, when temperature is higher than Tg
When, the mobility of barricade material is preferable.Barricade material can be any suitable material for meeting above-mentioned condition.
With reference to Fig. 3, after development is carried out to barricade material and forms barricade 120, sprayed in the gap of black matrix" 110
Ink (for example, conventional red, green and blue ink), to carry out inkjet printing, so as to be formed on the substrate 100 through barricade 120
The ink layer 130 separated.It is worth noting that, in this step, barricade material is carried out development formed barricade 120 it
Afterwards, the step of hard baking not being performed to barricade 120 and directly performing inkjet printing so that 120 He of barricade in subsequent high temperature processing procedure
Ink layer 130 cures simultaneously.Exemplary embodiment according to the present invention, the ink that execution inkjet printing is sprayed can be according to reality
It needs to make choice, however it is not limited to red, green and blue ink.
In figure 3, for clarity of illustration, an ink layer being located between two adjacent barricades is illustrated only
130, exemplary embodiment according to the present invention forms multiple ink layers between adjacent black matrix" 110 and barricade 120
(referring for example to shown in Fig. 5).The thickness t2 of the ink layer of inkjet printing is about 5 μm~6 μm, i.e., with the thickness of barricade and black square
The sum of the thickness of battle array approximately equal, but it is slightly less than the sum of the thickness of barricade and the thickness of black matrix".
With reference to Fig. 4, after inkjet printing completion, high temperature process is carried out to substrate 100.Specifically, 200 DEG C~230
The substrate 100 for being formed with barricade 120 and ink layer 130 is toasted 20 minutes~30 minutes at a temperature of DEG C, makes barricade 120 and oil
The heat cure together of layer of ink 130.Exemplary embodiment according to the present invention, high temperature process can remove the solvent in ink layer and make
It cures, and can make the gentle film contracting of 120 hot-fluid of barricade, i.e. makes barricade material solidification.Since the temperature of high temperature process is higher than
The glass transition temperature of barricade material, so the molecule segment motility of barricade material is preferable in high temperature process, barricade material
Material can the steady mulch contracting under levelling effect.Therefore, after high temperature process, the thickness t22 of the ink layer 130 after curing is
1 μm~2 μm, for example, it is preferred at 1.5 μm or so.The thickness t11 of barricade 120 after curing is 2.0 μm~2.5 μm, so that
The segment difference t3 obtained between finally formed ink layer 130 and barricade 120 can be contracted to 1.5 μm~2.0 μm.
Therefore, exemplary embodiment according to the present invention, by the way that material of the residual film ratio less than 50% is selected to be used as barricade, together
When do not perform after the display baking and innovated in technological process so that pass through inkjet printing technology formed colored filter
Segment difference be obviously reduced.
Fig. 5 shows colored filter in accordance with an alternative illustrative embodiment of the present invention.As shown in figure 5, in order into one
Step reduces segment difference, can be with the upper coating 140 of formation on the substrate 100 shown in Fig. 4 for being formed with colored filter.According to this hair
Bright exemplary embodiment, upper coating 140 can have 2.0 μm~2.5 μm of thickness and barricade 120 and oil are completely covered
Layer of ink 130.Therefore, the segment difference of gained colored filter can be contracted to 0.2 μm~0.3 μm.Since upper coating 140 uses levelling
Property good material, it is possible to segment difference is filled and led up in coating procedure, i.e. upper coating may be used as a kind of planarization layer.Upper painting
The material of layer 140 can be any suitable transparent resin.Can upper coating 140 be formed by coating and hard baking, it can also
Upper coating is formed by other suitable modes, the invention is not limited thereto.
Fig. 6 is the sectional view of the colored filter prepared according to the prior art.It is as shown in fig. 6, made according to the prior art
The segment difference t3 ' of standby colored filter is 3.5 μm~4.5 μm, it will influences the display quality of device.This is because according to existing
Technology prepare the method for colored filter caused by, according to prior art preparation method using general barricade material black
Barricade is formed in colour moment battle array and hard baking is carried out to barricade, the thickness of barricade is made to be fixed as 4 μm~5 μm, subsequent ink-jet printing ink
Layer of ink (for example, red, green and blue ink of spraying routine) simultaneously makes its heat cure, and the thickness of the ink layer after heat cure is 1.0 μm
~2.0 μm, so as to 3.5 μm~4.5 μm of segment difference occur.Also, even if the coating in the coating of this colorized optical filtering on piece, also can
Cause lateral light leak since the thickness of upper coating is too big, and increase the cost of manufacture of colored filter.
However, according to above-mentioned example embodiment and description it is known that the system of exemplary embodiment according to the present invention
The method of standby colored filter is less than 50% barricade material using residual film ratio, and ink-jet printing ink layer of ink simultaneously makes barricade and ink layer
Heat cure is carried out together, so as to obtain the colored filter of low segment difference (referring to figs. 1 to Fig. 4), is efficiently solved existing
The problems such as segment difference in technology is higher.In addition, as shown in figure 5, there is upper painting when prepared by exemplary embodiment according to the present invention
During the colored filter of layer, the segment difference of gained colored filter is only 0.2 μm~0.3 μm, is efficiently solved in the prior art
Segment difference it is higher the problem of and eliminate light leak.
The present invention selects the material of low residual film ratio to do barricade, and makes the heat cure together of barricade and ink layer, in technique
It is innovated in flow, successfully solves the higher problem of printing inkjet color optical filter segment difference.Colour according to the present invention
Optical filter can be applied to liquid crystal display or organic light emitting display etc..
Claims (10)
- A kind of 1. method for the colored filter for preparing low segment difference, which is characterized in that the described method comprises the following steps：Black matrix" separated from one another is formed on substrate；On black matrix" coat barricade material and perform it is exposed and developed, to form barricade, wherein, barricade material is residual film ratio Material less than 50%；Ink is sprayed in the gap of black matrix", so as to form ink layer by inkjet printing；High temperature process is performed to the substrate for being formed with ink layer, to remove the solvent in ink layer and cure ink layer, and Barricade is made to carry out the gentle film contracting of hot-fluid, so as to form colored filter on substrate.
- 2. according to the method described in claim 1, it is characterized in that, the glass transition temperature of barricade material is 150 DEG C~200 Between DEG C.
- 3. according to the method described in claim 1, it is characterized in that, on black matrix" perform development the step of after and Before the step of performing inkjet printing, hard baking processing is not carried out to barricade.
- 4. according to the method described in claim 1, it is characterized in that, by toasted at 200 DEG C~230 DEG C substrate 20 minutes~ Perform the high temperature process within 30 minutes.
- 5. according to the method described in claim 1, it is characterized in that, the thickness of barricade before high temperature process for 4 μm~5 μm, The thickness of barricade is 2.0 μm~2.5 μm after high temperature process, and the thickness of ink layer is 1 μm~2 μm after high temperature process.
- 6. according to the method described in claim 1, it is characterized in that, the thickness of black matrix" is 0.5 μm~1.5 μm.
- 7. according to the method described in claim 1, it is characterized in that, the segment difference of the colored filter is 1.5 μm~2.0 μm.
- 8. according to the method described in claim 1, it is characterized in that, the method further includes：After high temperature process is performed, The upper coating of covering barricade and ink layer is formed on substrate.
- 9. according to the method described in claim 8, it is characterized in that, the thickness of the upper coating be 2.0 μm~2.5 μm, segment difference For 0.2 μm~0.3 μm.
- 10. a kind of colored filter prepared by method according to claim 1 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711482264.5A CN108051944A (en) | 2017-12-29 | 2017-12-29 | A kind of method and colored filter of the colored filter for preparing low segment difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711482264.5A CN108051944A (en) | 2017-12-29 | 2017-12-29 | A kind of method and colored filter of the colored filter for preparing low segment difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108051944A true CN108051944A (en) | 2018-05-18 |
Family
ID=62128615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711482264.5A Pending CN108051944A (en) | 2017-12-29 | 2017-12-29 | A kind of method and colored filter of the colored filter for preparing low segment difference |
Country Status (1)
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| CN (1) | CN108051944A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877449A (en) * | 2005-06-10 | 2006-12-13 | 东进世美肯株式会社 | Negative light-sensitive resin composition |
| CN1880982A (en) * | 2005-06-17 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Color filter and preparation method thereof |
| CN101008733A (en) * | 2007-01-18 | 2007-08-01 | 友达光电股份有限公司 | Color filter and manufacture method therefor |
| KR20090010158A (en) * | 2006-05-18 | 2009-01-29 | 미쓰비시 가가꾸 가부시키가이샤 | Curable composition, hardened | cured material, a color filter, and a liquid crystal display device |
| CN101681103A (en) * | 2007-06-27 | 2010-03-24 | 三菱化学株式会社 | Photosensitive composition, method, cured product and liquid crystal display device |
-
2017
- 2017-12-29 CN CN201711482264.5A patent/CN108051944A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877449A (en) * | 2005-06-10 | 2006-12-13 | 东进世美肯株式会社 | Negative light-sensitive resin composition |
| CN1880982A (en) * | 2005-06-17 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Color filter and preparation method thereof |
| KR20090010158A (en) * | 2006-05-18 | 2009-01-29 | 미쓰비시 가가꾸 가부시키가이샤 | Curable composition, hardened | cured material, a color filter, and a liquid crystal display device |
| CN101008733A (en) * | 2007-01-18 | 2007-08-01 | 友达光电股份有限公司 | Color filter and manufacture method therefor |
| CN101681103A (en) * | 2007-06-27 | 2010-03-24 | 三菱化学株式会社 | Photosensitive composition, method, cured product and liquid crystal display device |
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Application publication date: 20180518 |