CN109031795B - Preparation method of conductive solution and manufacturing method of color film substrate - Google Patents
Preparation method of conductive solution and manufacturing method of color film substrate Download PDFInfo
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- CN109031795B CN109031795B CN201810934595.6A CN201810934595A CN109031795B CN 109031795 B CN109031795 B CN 109031795B CN 201810934595 A CN201810934595 A CN 201810934595A CN 109031795 B CN109031795 B CN 109031795B
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- 239000000758 substrate Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 41
- 239000004642 Polyimide Substances 0.000 claims abstract description 34
- 229920001721 polyimide Polymers 0.000 claims abstract description 34
- 239000003960 organic solvent Substances 0.000 claims abstract description 31
- 238000004873 anchoring Methods 0.000 claims abstract description 27
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims abstract 12
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 11
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical group CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000000379 polymerizing effect Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N trimethylxanthine Natural products CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 claims 6
- 229960001948 caffeine Drugs 0.000 claims 3
- 239000010408 film Substances 0.000 description 37
- 239000002904 solvent Substances 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 125000004093 cyano group Chemical group *C#N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011049 filling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- VWBWQOUWDOULQN-UHFFFAOYSA-N nmp n-methylpyrrolidone Chemical group CN1CCCC1=O.CN1CCCC1=O VWBWQOUWDOULQN-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133723—Polyimide, polyamide-imide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133796—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers having conducting property
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- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
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- Crystallography & Structural Chemistry (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention provides a preparation method of a conductive solution and a manufacturing method of a color film substrate, wherein the preparation method of the conductive solution comprises the following steps: mixing PEDOT and an organic solvent having a long chain for anchoring in polyimide; so that the PEDOT and the long chain for anchoring in the polyimide are subjected to polymerization reaction to obtain the conductive solution with alignment effect, wherein the conductive solution with alignment effect is used for forming the transparent conductive film with alignment effect. According to the preparation method of the conductive solution and the preparation method of the color film substrate, the problem that PEDOT is difficult to dissolve can be avoided, and the reliability and the alignment effect of the conductive film are improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a preparation method of a conductive solution and a manufacturing method of a color film substrate.
[ background of the invention ]
The ITO conductive film is an indispensable component of the liquid crystal display. In recent years, with the demand for low-cost and low-power products, various ITO-substituted materials have become a promising technological trend. However, PEDOT (a polymer of EDOT, a monomer of 3, 4-ethylenedioxythiophene) is not itself soluble, with the aid of PSS ((C) which is a good solvent8H7NaO3S)x) Is only soluble in the solvent, the presence of PSS affects the conductivity of PEDOT and, at the same time, causes a loss in its transmittance.
PI (polyimide) is an important factor affecting the display quality of liquid crystal displays. In the existing thin film transistor liquid crystal display, the main structure is to anchor the liquid crystal by using the PI film layer on the ITO film layer so as to achieve the aim of alignment in advance. When a voltage is applied to the ITO, the liquid crystal is deflected to achieve the purpose of display. When PEDOT and PSS are adopted to replace ITO, the organic solvent in the PI printing solution reacts with PEDOT and PSS, so that the reliability of PEDOT and PSS is reduced, and the alignment effect is reduced.
Therefore, it is necessary to provide a method for preparing a conductive solution and a method for manufacturing a color filter substrate, so as to solve the problems in the prior art.
[ summary of the invention ]
The invention aims to provide a preparation method of a conductive solution and a manufacturing method of a color film substrate, which can avoid the problem that PEDOT is difficult to dissolve and improve the reliability and alignment effect of a conductive film.
In order to solve the above technical problems, the present invention provides a method for preparing a conductive solution, comprising:
mixing PEDOT and an organic solvent having a long chain for anchoring in polyimide; so that the PEDOT and the long chain for anchoring in the polyimide are subjected to polymerization reaction to obtain the conductive solution with alignment effect, wherein the conductive solution with alignment effect is used for forming the transparent conductive film with alignment effect.
In the method for producing a conductive solution of the present invention, the organic solvent is N-methylpyrrolidone.
The present invention also provides a method for preparing a conductive solution, comprising:
mixing positively charged PEDOT and an organic solvent having a long chain for anchoring in polyimide and a compound having a CN group; and under the triggering of a compound with CN groups, the positively charged PEDOT and the long chain for anchoring in the polyimide are subjected to polymerization reaction to obtain the conductive solution with alignment effect.
In the method for producing a conductive solution of the present invention, the compound having a CN group is also used to balance electrons in the conductive solution.
In the method for preparing a conductive solution of the present invention, the positively charged PEDOT is obtained by oxidizing PEDOT.
In the method for producing a conductive solution of the present invention, the organic solvent is N-methylpyrrolidone.
In order to solve the technical problem, the invention provides a method for manufacturing a color film substrate, which comprises the following steps:
coating a conductive solution with an alignment effect on a color film substrate;
drying and curing the color film substrate coated with the conductive solution with the alignment effect to obtain a transparent conductive film with the alignment effect;
the conductive solution with the alignment function is obtained by polymerizing PEDOT and a long chain used for anchoring in polyimide in an organic solvent or polymerizing positively charged PEDOT and a compound used for anchoring in polyimide in an organic solvent and having a CN group.
In the manufacturing method of the color film substrate, the compound with the CN group is also used for balancing electrons in the conductive solution.
In the manufacturing method of the color film substrate, the organic solvent is N-methylpyrrolidone.
In the manufacturing method of the color film substrate, the curing temperature is 230 ℃, and the curing time is 30 minutes.
According to the preparation method of the conductive solution and the preparation method of the color film substrate, the PEDOT and the PI long chain which is very soluble in the solvent are polymerized together, so that the problem that the PEDOT is difficult to dissolve is avoided, the reliability and the alignment effect of the conductive film are improved, the risk of pollution of the alignment film can be reduced, and the production cost is reduced.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a first step of a manufacturing method of a color film substrate according to the present invention;
fig. 2 is a schematic structural diagram of a second step of the manufacturing method of the color film substrate according to the present invention;
fig. 3 is a schematic structural diagram of a color film substrate according to the present invention.
[ detailed description ] embodiments
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The preparation method of the conductive solution comprises the following steps:
s101, mixing PEDOT and an organic solvent with a long chain for anchoring in polyimide;
for example, B is dispersed in an organic solvent, which is very soluble in the organic solvent, and PEDOT (a polymer of EDOT monomer, 3, 4-ethylenedioxythiophene) and the organic solvent with B are mixed, wherein the organic solvent is NMP (N-methylpyrrolidone) solvent, and B is a long chain with an anchoring effect in polyimide, namely a long chain for anchoring.
The chemical formula of PEDOT is as follows:
the chemical formula of B is as follows:
the equivalent chemical formula of B is as follows:
wherein 101 is (CH2)nOr derivatives thereof, wherein 10>n>2, n is preferably 8 to 9.
And S102, carrying out polymerization reaction on PEDOT and the long chain for anchoring in the polyimide to obtain the conductive solution with the alignment effect.
For example, B in the organic solvent and PEDOT are subjected to polymerization reaction, namely the B and the PEDOT are polymerized together, and the B grows on the PEDOT to achieve alignment effect, so that the conductive solution D' with the alignment effect is obtained. The conductive solution is used for forming a transparent conductive film with an alignment effect.
D' has the following chemical formula:
the preparation method of the conductive solution of the second embodiment of the invention comprises the following steps:
s201, mixing the positively charged PEDOT, an organic solvent with a long chain for anchoring in polyimide and a compound with a CN group;
for example, B is dispersed in an organic solvent, B is very soluble in the organic solvent, PEDOT is oxidized to obtain positively charged PEDOT, and then a, the organic solvent having B, and C are mixed, wherein the organic solvent is N-methylpyrrolidone (N-methylpyrrolidone) solvent.
The chemical formula of A is as follows:
the chemical formula of B is as follows:
the chemical formula of C is as follows: R-CN, wherein R is any one group.
S202, under the triggering of a compound with CN groups, the positively charged PEDOT and the long chain for anchoring in the polyimide are subjected to polymerization reaction to obtain a conductive solution with an alignment effect.
Under the trigger of C, B and A in the organic solvent are subjected to polymerization reaction, namely B and A are polymerized together, and B grows on PEDOT to achieve the alignment effect; and obtaining the conductive solution D with the alignment effect. Wherein A is PEDOT which is positively charged after being oxidized; b is a long chain playing an anchoring role in Polyimide (PI); c is a compound with a CN (cyano) group, wherein C is used for initiating polymerization of the B chain on A and also plays a role in balancing electrons.
The chemical formula of D is as follows:
the invention also provides a manufacturing method of the color film substrate, which comprises the following steps:
s301, coating a conductive solution with an alignment effect on a color film substrate;
as shown in fig. 1, before the step of coating the color filter substrate 21 with the conductive solution 22 having an alignment effect, the method further includes:
s401, manufacturing a color resistance layer and a black matrix on a substrate;
s402, coating a conductive solution with an alignment effect on the color resistance layer and the black matrix.
That is, the color filter substrate 21 may include a color resist layer and a black matrix on the substrate base. The base substrate is, for example, a glass substrate.
The conductive solution with the alignment function is obtained by polymerizing PEDOT and a long chain used for anchoring in polyimide in an organic solvent or polymerizing positively charged PEDOT and a compound used for anchoring in polyimide in an organic solvent and having a CN group. The conductive solution with alignment effect is specifically referred to above.
Wherein the compound having a CN group is used to balance electrons.
Wherein the organic solvent is N-methyl pyrrolidone.
S302, drying and curing the color film substrate coated with the conductive solution with the alignment effect to obtain a transparent conductive film with the alignment effect;
as shown in fig. 2 and 3, for example, the color film substrate 21 coated with the conductive solution 22 having alignment effect is dried and cured (the drying and curing direction is shown by the arrow direction in the figure), so as to obtain a transparent conductive film 22' having alignment effect. Wherein the curing temperature is 230 ℃ and the curing time is 30 minutes.
And then, directly assembling the prepared color film substrate with an Array substrate, and filling liquid crystal after the assembly is finished, thereby forming a complete color film substrate.
Because PEDOT and PI long chain which is very soluble in solvent are polymerized together, PSS can be saved, and the problem that PEDOT is difficult to dissolve is effectively solved; the alignment film formed by the conductive solution plays the roles of conducting and aligning at the same time, namely the alignment film and the transparent conductive layer do not need to be manufactured separately, so that the manufacturing process is simplified, the production cost is reduced, the reliability of the conductive film is improved, the risk of pollution of the alignment film is avoided, and the alignment effect is improved.
According to the preparation method of the conductive solution and the preparation method of the color film substrate, the PEDOT and the PI long chain which is very soluble in the solvent are polymerized together, so that the problem that the PEDOT is difficult to dissolve is avoided, the reliability and the alignment effect of the conductive film are improved, the risk of pollution of the alignment film can be reduced, and the production cost is reduced.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A method of preparing a conductive solution, comprising:
mixing PEDOT and an organic solvent having a long chain for anchoring in polyimide; so that the PEDOT and the long chain for anchoring in the polyimide generate polymerization reaction to obtain a conductive solution with alignment effect, wherein the conductive solution with alignment effect is used for forming a transparent conductive film with alignment effect; the chemical formula of the long chain for anchoring in the polyimide is as follows:
wherein, in the
In (1),
is composed of
2. The method for producing a conductive solution according to claim 1, wherein the organic solvent is N-methylpyrrolidone.
3. A method of preparing a conductive solution, comprising:
mixing positively charged PEDOT and an organic solvent having a long chain for anchoring in polyimide and a compound having a CN group; under the triggering of a compound with CN groups, the positively charged PEDOT and the long chain for anchoring in the polyimide are subjected to polymerization reaction to obtain a conductive solution with an alignment effect; the chemical formula of the long chain for anchoring in the polyimide is as follows:
wherein, in the
In (1),
is composed of
4. The method for preparing a conductive solution according to claim 3, wherein the compound having a CN group is also used for balancing electrons in the conductive solution.
5. The method for preparing a conductive solution according to claim 3, wherein the positively charged PEDOT is obtained by oxidizing PEDOT.
6. The method for producing a conductive solution according to claim 3, wherein the organic solvent is N-methylpyrrolidone.
7. A manufacturing method of a color film substrate is characterized in that,
coating a conductive solution with an alignment effect on a color film substrate;
drying and curing the color film substrate coated with the conductive solution with the alignment effect to obtain a transparent conductive film with the alignment effect;
wherein the conductive solution with alignment effect is obtained by the polymerization reaction of PEDOT and long chain for anchoring in polyimide in an organic solvent; or
The conductive solution with the alignment effect is obtained by polymerizing positively charged PEDOT, an organic solvent with a long chain for anchoring in polyimide and a compound with a CN group, wherein the positively charged PEDOT and the long chain for anchoring in the polyimide are polymerized under the triggering of the compound with the CN group; the chemical formula of the long chain for anchoring in the polyimide is as follows:
wherein, in the
In (1),
is composed of
8. The method for manufacturing a color filter substrate according to claim 7, wherein the compound having a CN group is further used for balancing electrons in the conductive solution.
9. The method for manufacturing a color filter substrate according to claim 7, wherein the organic solvent is N-methylpyrrolidone.
10. The manufacturing method of the color filter substrate according to claim 7, wherein the curing temperature is 230 ℃, and the curing time is 30 minutes.
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