CN101435991B - Method for making colorful optical filter - Google Patents
Method for making colorful optical filter Download PDFInfo
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- CN101435991B CN101435991B CN2007101774245A CN200710177424A CN101435991B CN 101435991 B CN101435991 B CN 101435991B CN 2007101774245 A CN2007101774245 A CN 2007101774245A CN 200710177424 A CN200710177424 A CN 200710177424A CN 101435991 B CN101435991 B CN 101435991B
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Abstract
The invention relates to a method for manufacturing a colored filter. The method comprises: a step one of forming a black matrix on a substrate, wherein the black matrix defines at least one first pixel area, at least one second pixel area and at least one third pixel area; a step two of pressing a micro embossed pattern of an elastic stamp coated with a first color sol onto the first pixel area;a step three of printing the first color sol on the elastic stamp to the first pixel area to form a first color class; and a step four of forming a second color class in the second pixel area and forming a third color class in the third pixel area by repeating the step two and the step three. The method for manufacturing the colored filter replaces the comparatively trivial technology of micro-lithography and etching for manufacturing the color class in the prior art, has simpler processing steps, reduces cost, obtains the color class pattern with clear borders at the same time, and improves accuracy.
Description
Technical field
The present invention relates to a kind of manufacturing method of color filters, relate in particular to a kind of manufacturing method of color filters that adopts micro-contact-printing, belong to LCD and make the field.
Background technology
LCD (Liquid Crystal Display, hereinafter to be referred as: principle of work LCD) is to utilize the state of electric field controls liquid crystal molecule, thereby can the light that the control backlight produces pass through liquid crystal molecule, to reach the chiaroscuro effect on the display screen.Colored filter is one of primary element of LCD, forms by red, blue and green three kinds of color pixel, these three kinds of pixels with pattern or arranged in array mode on substrate, in order to reach the vision impression of colour.LCD has been widely used in various personal electronic devices at present, as mobile phone and personal digital assistant etc.
Along with the develop rapidly of patterned surface technology, soft lithography becomes the more extensive and more reliable non-photolithographic surface patterning techniques of application gradually.The basic thought of the micro-contact printing technology in the soft lithography is: utilize Elastic forming board seal and numerator self-assembly technique, form the nano graph structure of self assembled monolayer at substrate surface.This micro-contact printing technology can be processed large-area simple pattern, is applicable to the graphic making of micron to nano grade, and quality height and cost are low.
The manufacturing method of color filters that proposes in the prior art is: adopt system film, little shadow and etching method, form black matrix on substrate; Successively by decoration method, pigment dispersing method and electricity method on the substrate that forms black matrix, form colored colour cell.In this class manufacture method, need on substrate, make film, little shadow and etched processing procedure repeatedly, and little shadow and etched processing procedure are comparatively loaded down with trivial details, make cost increase greatly; And more and more the Pixel Dimensions of miniaturization further requires little shadow and etched precision, and this method machinery accuracy not high, film inhomogeneously, influenced precision and high-quality rate.
Also proposed some manufacturing method of color filters in the prior art, as print process and ink-jet method, wherein print process has the relatively poor shortcoming of precision; The coloured material that has throwed in the ink-jet method interpenetrates easily with the coloured material of its adjacent allochromatic colour and mixes, and has the color reproduction difference and the relatively poor shortcoming of display quality of chromatic image.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing method of color filters, can substitute the little shadow and the etching technics of the colored colour cell of manufacturing comparatively loaded down with trivial details in the prior art, make technology simple, with low cost, and guarantee precision.
The invention provides a kind of manufacturing method of color filters, comprising:
Step 1, form black matrix on substrate, this black matrix limits at least one first pixel region, at least one second pixel region and at least one the 3rd pixel region;
Step 4, repeating step 2 and step 3 form the second colored colour cell in second pixel region, form the 3rd colored colour cell in the 3rd pixel region.
Manufacturing method of color filters provided by the invention, the little embossed pattern that to be stained with the elastomeric stamp that is covered with corresponding colored colloidal sol is pressed on the corresponding pixel region, colored colloidal sol on the elastomeric stamp is transferred to corresponding pixel region forms corresponding colored colour cell, this step has substituted the little shadow and the etching technics of the comparatively loaded down with trivial details colored colour cell of manufacturing in the prior art, make processing step simpler, reduced cost; The colored colour cell pattern boundaries that obtains simultaneously is clear, has improved precision.
Description of drawings
Fig. 1 is the process flow diagram of manufacturing method of color filters one specific embodiment of the present invention;
Fig. 2 is for forming the synoptic diagram of the substrate of black matrix in manufacturing method of color filters one specific embodiment of the present invention;
Fig. 3 is stained with the synoptic diagram that covers red colloidal sol in manufacturing method of color filters one specific embodiment of the present invention on elastomeric stamp;
Fig. 4 is for forming the synoptic diagram of red colour cell on the substrate that is formed with black matrix in manufacturing method of color filters one specific embodiment of the present invention;
Fig. 5 is for making the process flow diagram of elastomeric stamp in manufacturing method of color filters one specific embodiment of the present invention;
Fig. 6 is for forming the synoptic diagram of red colour cell, blue colour cell and green colour cell successively in manufacturing method of color filters one specific embodiment of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, be the process flow diagram of manufacturing method of color filters one specific embodiment of the present invention, wherein carry out following steps:
Step 101, on substrate, form black matrix, should limit at least one first pixel region, at least one second pixel region and at least one the 3rd pixel region by black matrix, first pixel region of present embodiment is the red pixel district, and second pixel region is the blue pixel district, and the 3rd pixel region is the green pixel district;
Step 102, the little embossed pattern that will be stained with the elastomeric stamp that is covered with the first colored colloidal sol are pressed on described first pixel region, and the first colored colloidal sol is red colloidal sol;
Step 103, the first colored colloidal sol on the elastomeric stamp is transferred in first pixel region forms the first colored colour cell, the first colored colour cell is red colour cell;
Step 104, repeating step 102 and step 103 form the second colored colour cell in second pixel region, form the 3rd colored colour cell in the 3rd pixel region, promptly form blue colour cell in the blue pixel district, form green colour cell in the green pixel district.
As shown in Figure 2, for forming the synoptic diagram of the substrate of black matrix in the present embodiment.Deposition one deck resin generally comprises the carbon black or the organic pigment of low penetration degree, black content in this resin on substrate 1, or adopts sputtering method to deposit the unreflecting metal film of one deck on substrate 1; On the substrate of deposition resin or unreflecting metal film, apply photoresist; Adopt mask, and by little shadow and etching technics, form black matrix 2, this black matrix 2 limits red pixel district 11, blue pixel district 12 and green pixel district 13.
As shown in Figure 3, for on elastomeric stamp, being stained with the synoptic diagram that covers red colloidal sol in the present embodiment, have the little embossed pattern consistent on the elastomeric stamp 3 with the pattern of red colour cell, use external force that it is contacted a period of time in red colloidal sol 4, because intermolecular effect can be covered with a certain amount of red colloidal sol 4 on the elastomeric stamp 3.
As shown in Figure 4, on the substrate that is being formed with black matrix, forming the synoptic diagram of red colour cell in the present embodiment, will be covered with little embossed pattern of elastomeric stamp 3 of red colloidal sol with 0.2 * 10
5～1.0 * 10
5Pascal's pressure is pressed in the red pixel district 11, presses the duration of establishing to be 10～20 seconds; Under 50 ℃～100 ℃ temperature conditions, the red colloidal sol on the elastomeric stamp can be transferred to and form red colour cell 6 in the red pixel district 11.
Before step 102, can comprise the step of making elastomeric stamp, as shown in Figure 5,, specifically comprise the steps: for making the process flow diagram of elastomeric stamp in the present embodiment
Can adopt same elastomeric stamp when forming red colour cell, blue colour cell and green colour cell in the present embodiment, also can adopt different elastomeric stamps, said method can produce the elastomeric stamp that forms corresponding colored colour cell respectively in the employing present embodiment.
Can also comprise the step of making colored colloidal sol before step 102, this step is specially: be matrix with the resin oligomers, for example acrylic acid or polyvinyl alcohol are made the resin colloidal sol that formation has certain character to wherein adding solvent and adjuvant; The pigment that adds respective color in resin colloidal sol forms corresponding colored colloidal sol; The proportionate relationship of colored each component of colloidal sol is:
Resin oligomers is 30%～50%;
Solvent is 25%～50%;
Adjuvant is 5%～10%;
The pigment of respective color is 5%～35%.
Adopt said method can produce red colloidal sol, blue sol and green colloidal sol.
As shown in Figure 6, for forming the synoptic diagram of red colour cell, blue colour cell and green colour cell in the present embodiment successively, under the prerequisite of elastomeric stamp for preparing the shades of colour correspondence and colloidal sol of all kinds, (thickness of each colour cell layer is 100～2500nm), finally finishes the manufacture process of colored filter to form red colour cell 6, blue colour cell 7 and green colour cell 8 successively on the substrate 1 that is formed with black matrix 2.
Manufacturing method of color filters provided by the invention, the little embossed pattern that to be stained with the elastomeric stamp that is covered with corresponding colored colloidal sol is pressed on the corresponding pixel region, colored colloidal sol on the elastomeric stamp can be transferred to corresponding pixel region and form corresponding colored colour cell, this step has substituted the little shadow and the etching technics of the comparatively loaded down with trivial details colored colour cell of manufacturing in the prior art, make processing step simpler, reduced cost; The colored colour cell pattern boundaries that obtains simultaneously is clear, has improved precision.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a manufacturing method of color filters is characterized in that, comprising:
Step 1, form black matrix on substrate, this black matrix limits at least one first pixel region, at least one second pixel region and at least one the 3rd pixel region;
Step 2, the little embossed pattern that will be stained with the elastomeric stamp that is covered with the first colored colloidal sol are pressed on described first pixel region;
Step 3, the first colored colloidal sol on the elastomeric stamp is transferred in first pixel region forms the first colored colour cell;
Step 4, repeating step 2 and step 3 form the second colored colour cell in second pixel region, form the 3rd colored colour cell in the 3rd pixel region.
2. manufacturing method of color filters according to claim 1, it is characterized in that, describedly be specially forming black matrix on the substrate: deposition one deck resin or unreflecting metal film on substrate, apply photoresist again, forms on substrate by little shadow and etching technics and deceive matrix.
3. manufacturing method of color filters according to claim 1 is characterized in that, described step 2 is specially: the little embossed pattern that will be stained with the elastomeric stamp that is covered with the first colored colloidal sol is with 0.2 * 10
5～1.0 * 10
5Pascal's pressure is pressed on described first pixel region, and continues 10～20 seconds.
4. manufacturing method of color filters according to claim 3, it is characterized in that, the first colored colloidal sol on the elastomeric stamp is transferred in first pixel region forms the first colored colour cell and be specially: under 50 ℃～100 ℃ temperature conditions, the first colored colloidal sol on the elastomeric stamp is transferred to forms the first colored colour cell in first pixel region.
5. according to the arbitrary described manufacturing method of color filters of claim 1-4, it is characterized in that, before described step 2, also comprise being specially the step of making described elastomeric stamp:
The surface of silicon chip is handled;
Adopt the surface of electron beam or the described silicon chip of photoetching process etching, form the groove pattern of the rule consistent with the pattern of corresponding colored colour cell;
The liquid dimethyl radical siloxane is cast in the silicon chip surface that forms groove pattern,, forms elastomeric stamp with little embossed pattern at 65 ℃～150 ℃ following curing moldings.
6. according to the arbitrary described manufacturing method of color filters of claim 1-4, it is characterized in that, before described step 2, also comprise being specially the step of making described colored colloidal sol:
In resin oligomers, add solvent and adjuvant formation resin colloidal sol; The pigment that adds respective color in resin colloidal sol forms corresponding colored colloidal sol; The proportionate relationship of described colored each component of colloidal sol is:
Resin oligomers is 30%～50%;
Solvent is 25%～50%;
Adjuvant is 5%～10%;
The pigment of respective color is 5%～35%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101774245A CN101435991B (en) | 2007-11-15 | 2007-11-15 | Method for making colorful optical filter |
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|---|---|---|---|
| CN2007101774245A CN101435991B (en) | 2007-11-15 | 2007-11-15 | Method for making colorful optical filter |
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| CN101435991A CN101435991A (en) | 2009-05-20 |
| CN101435991B true CN101435991B (en) | 2011-10-12 |
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| CN108752825A (en) * | 2018-05-30 | 2018-11-06 | 深圳市华星光电技术有限公司 | Quantum dot hydrogel, quantum dot patterning and transfer method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683970A (en) * | 2004-04-13 | 2005-10-19 | Lg.菲利浦Lcd株式会社 | Liquid crystal display panel and its producing method |
| CN1725044A (en) * | 2004-01-19 | 2006-01-25 | 大日精化工业株式会社 | Fabrication process of color filters, inks, color filters, and image displays using the color filters |
| CN101029946A (en) * | 2007-04-11 | 2007-09-05 | 友达光电股份有限公司 | Manufacturing method of color filter |
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2007
- 2007-11-15 CN CN2007101774245A patent/CN101435991B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725044A (en) * | 2004-01-19 | 2006-01-25 | 大日精化工业株式会社 | Fabrication process of color filters, inks, color filters, and image displays using the color filters |
| CN1683970A (en) * | 2004-04-13 | 2005-10-19 | Lg.菲利浦Lcd株式会社 | Liquid crystal display panel and its producing method |
| CN101029946A (en) * | 2007-04-11 | 2007-09-05 | 友达光电股份有限公司 | Manufacturing method of color filter |
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| CN101435991A (en) | 2009-05-20 |
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Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20141128 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20141128 |
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Effective date of registration: 20141128 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
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