CN100410738C - Method for manufacturing liquid crystal display device - Google Patents
Method for manufacturing liquid crystal display device Download PDFInfo
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- CN100410738C CN100410738C CNB2005100751783A CN200510075178A CN100410738C CN 100410738 C CN100410738 C CN 100410738C CN B2005100751783 A CNB2005100751783 A CN B2005100751783A CN 200510075178 A CN200510075178 A CN 200510075178A CN 100410738 C CN100410738 C CN 100410738C
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Abstract
The present invention provides a manufacturing method for a liquid crystal display. A baseplate is provided and is provided with a first electrode layer, and a patternized protrusion structure is formed on the baseplate to divide the baseplate into a plurality of pixel areas; a liquid crystal layer is filled in each of the pixel areas; a monomer molecule layer is filled in each of the pixel areas and is on the liquid crystal layers; the monomer molecule layers are polymerized into a macromolecular material layer which is separated from the liquid crystal layers. The manufacturing method for a liquid crystal display of the present invention can achieve the effect of improving the display quality of a single baseplate structure and further manufactures a display with colorization, memory and softness.
Description
Technical field
The invention relates to a kind of manufacture method of LCD, be particularly to a kind of method of utilizing ink-jet method and phase detachment technique to make LCD.
Background technology
LCD (LCD) has many advantages, and for example volume is little, in light weight, low power consumption or the like.Therefore, LCD has been applied to hand-held computer, mobile phone or the like electronic product widely.That is LCD Technology is just towards field light, that approach, be easy to carry about with one.For example, Philip (Philips) company shows (the Society for Information Display of association in international information in 2004, SID) year club proposes, for reaching the flexible that promotes flexible display, the most important condition should be to reduce integral member thickness for considering, generally speaking, if component thickness reaches 400 μ m when above, the flexibility of display promptly becomes flexible (bendable) from flexibility (flexible).Present desire on the market reduces the method for component thickness, nothing more than the substrate and the blooming that approach for use, or uses the monobasal framework.
Fig. 1 shows that prior art forms the method synoptic diagram of polymer dispersion type liquid crystal display.One LCD panel places the cavity 32 of ultraviolet light (UV) irradiation devices.One power supply unit 30 is bestowed the upper and lower electrode 34,36 that is biased in the LCD panel.Liquid crystal layer 38 between the upper and lower electrode 34,36 comprises liquid crystal molecule and monomer molecule, when liquid crystal layer is subjected to ultraviolet (UV) photoirradiation, monomer molecule can aggregate into the continuity network, and in the polymerization process, makes the orientation (orientation) of liquid crystal molecule more tend to consistent.After the LCD panel is through ultraviolet light (UV) irradiation processing procedure or hot processing procedure, just form liquid crystal/high molecular being separated after the monomer molecule polymerization of the liquid crystal layer 38 between the upper and lower substrate.
WO 02/48282 discloses a kind of monobasal framework, utilizes liquid crystal/high molecular processing procedure that is separated to reach, and employed method utilizes coating or ink-jet method that this composite material is coated on the substrate at first liquid crystal being mixed with high polymer monomer again.And then the mode of utilizing irradiation with liquid crystal and fractionated polymer from, can be made into the LCD that can utilize transverse electric field drive pattern (IPS mode) to drive.Yet the prior art means are mixed liquid crystal earlier with high polymer monomer, utilize the mode of irradiation to be separated again, and the method causes too much macromolecule to residue in liquid crystal display area easily, and cause display quality to descend.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of manufacture method of LCD, by the selection of using the monobasal framework and the material that is separated, and reach the effect of the display quality that promotes the monobasal framework, and utilize the ink-jet processing procedure and produce with colorize, Memorability, soft display.
According to above-mentioned purpose, the invention provides a kind of manufacture method of LCD, comprising: a substrate is provided, has one first electrode layer on it; Form a patterning raised structures on this substrate, to separate into a plurality of pixel regions; Insert a liquid crystal layer in each pixel region; Insert a monomer molecule layer in each pixel region, and be positioned on this liquid crystal layer; And this monomer molecule layer of polymerization makes and becomes a polymer material layer, and forms with this liquid crystal layer and to be separated.
The manufacture method of LCD of the present invention, this substrate comprises glass substrate, metal substrate or plastic base.
The manufacture method of LCD of the present invention, this substrate comprises base plate of array in active mode.
The manufacture method of LCD of the present invention, this first electrode layer comprises organic conductive material or inorganic conductive material.
The manufacture method of LCD of the present invention, this first electrode layer comprise many parallel electrodes or refer to dredge the shape electrode, to form transverse electric field.
The manufacture method of LCD of the present invention more comprises forming a both alignment layers on this first electrode layer.
The manufacture method of LCD of the present invention, this both alignment layers comprises polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.
The manufacture method of LCD of the present invention, the step that forms this raised structures comprises with little shadow, printing or rubbing method formation.
The manufacture method of LCD of the present invention, the step that forms this liquid crystal layer comprise with ink-jet method and forming.
The manufacture method of LCD of the present invention, this liquid crystal layer comprise that stable twisted nematic, cholesterol type, stratose type, plate-like type or liquid are to type liquid crystal molecule material.
The manufacture method of LCD of the present invention, the scope of the proportion of the liquid crystal material in this liquid crystal layer is on the whole between 0.7-1.5g/cm
3
The manufacture method of LCD of the present invention, the step that forms this monomer molecule layer comprise with ink-jet method and forming.
The manufacture method of LCD of the present invention, the step of this monomer molecule layer of polymerization comprise irradiation polymerization, legal, the radical polymerization of hot polymerization.
The manufacture method of LCD of the present invention, the scope of the proportion of the unimolecule material in this monomer molecule layer is on the whole between 0.5-1.7g/cm
3
The manufacture method of LCD of the present invention more comprises forming a second electrode lay on this polymer material layer.
According to above-mentioned purpose, the present invention provides a kind of manufacture method of LCD in addition, comprising: a substrate is provided, has one first electrode layer on it; Form a both alignment layers on this this first electrode layer; Form a patterning raised structures, to separate into a plurality of pixel regions; Be coated with a liquid crystal layer in each pixel region with ink-jet method; Be coated with a monomer molecule layer in each pixel region with ink-jet method, and be positioned on this liquid crystal layer; This monomer molecule layer of polymerization makes and becomes a polymer material layer, and is separated with this liquid crystal layer formation; And form a second electrode lay on this polymer material layer.
The manufacture method of LCD of the present invention, this substrate comprises base plate of array in active mode.
The manufacture method of LCD of the present invention, this first electrode layer comprise many parallel electrodes or refer to dredge the shape electrode, to form transverse electric field.
The manufacture method of LCD of the present invention, this both alignment layers comprises polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.
The manufacture method of LCD of the present invention, the step that forms this raised structures comprises with little shadow, printing or rubbing method formation.
The manufacture method of LCD of the present invention, this liquid crystal layer comprise that stable twisted nematic, cholesterol type, stratose type, plate-like type or liquid are to type liquid crystal molecule material.
The manufacture method of LCD of the present invention, the scope of the proportion of the liquid crystal material in this liquid crystal layer is on the whole between 0.7-1.5g/cm
3
The manufacture method of LCD of the present invention, the step of this monomer molecule layer of polymerization comprise irradiation polymerization, legal, the radical polymerization of hot polymerization.
The manufacture method of LCD of the present invention, the scope of the proportion of the unimolecule material in this monomer molecule layer is on the whole between 0.5-1.7g/cm
3
The manufacture method of LCD of the present invention can reach the effect of the display quality that promotes the monobasal framework, and then produces with colorize, Memorability, soft display.
Description of drawings
Fig. 1 shows that prior art forms the method synoptic diagram of polymer dispersion type liquid crystal display device (PD-LCD);
Fig. 2 shows the LCD of the embodiment of the invention in conjunction with ink-jet method and liquid crystal/formed monobasal framework of macromolecule phase detachment technique;
Fig. 3 is the process flow diagram that shows the LCD manufacture method;
Fig. 4 to Fig. 6 is the diagrammatic cross-section of demonstration according to the manufacture method of the LCD of the embodiment of the invention.
Embodiment
Below cooperate graphic and preferred embodiment, to illustrate in greater detail the present invention.
Fig. 2 shows the LCD of the embodiment of the invention in conjunction with ink-jet method and liquid crystal/formed monobasal framework of macromolecule phase detachment technique.See also Fig. 2, the LCD 10 of a monobasal framework comprises a substrate 100, has one first electrode layer on it.One both alignment layers 102 is arranged on this substrate with first electrode layer 100.One patterning raised structures 110 is arranged on the substrate 100, to separate into a plurality of pixel regions 120.One liquid crystal layer 122 is filled in each pixel region 120.One polymer material layer 124 is arranged in each pixel region 120, and is positioned on the liquid crystal layer 122.
Fig. 3 is the process flow diagram that shows LCD 10 manufacture methods.At first, as step S10, provide a substrate with one first electrode layer.Then, as step S20, form a both alignment layers and have on the substrate of first electrode layer in this.This both alignment layers comprises polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.Then, as step S30, form a patterning raised structures on this substrate, to separate into a plurality of pixel regions.As step S40, in each pixel region, fill a liquid crystal layer.And then, as step S50, insert a monomer molecule layer in each pixel region, and be positioned on this liquid crystal layer.Then, as step S60, this monomer molecule layer of polymerization makes and becomes a polymer material layer, and is separated with this liquid crystal layer formation.As step S70,, for example after control circuit electrically connects or encapsulates, finish LCD 10 in successive process.
Fig. 4 to Fig. 6 is the diagrammatic cross-section of demonstration according to the manufacture method of the LCD of the embodiment of the invention.See also the 4th figure, a substrate 100 is provided, have one first electrode layer (not shown) on it.Substrate 100 can comprise glass substrate, metal substrate or transparent plastic substrate.On substrate 100, comprise the active matrix control element, for example thin film transistor (TFT).First electrode layer comprises organic conductive material or inorganic conductive material, and its form can be many parallel electrodes or refer to comb electrode, to form transverse electric field.Though the embodiment of the invention illustrates feature of the present invention with the LCD that transverse electric field drives, right non-in order to limit the present invention, the LCD that other form drives, for example reverse array type or cholesterol type LCD, can also utilize the disclosed manufacture method manufacturing of the embodiment of the invention.
Then, form a both alignment layers 102 on substrate 100 with first electrode layer.Both alignment layers 102 can comprise polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.One patterning raised structures 110 is formed on the substrate 100, to separate into a plurality of pixel regions 120.The formation method of patterning raised structures 110 comprises little shadow, printing or rubbing method.Then, insert a liquid crystal layer 122 in each pixel region 120.
The formation step of liquid crystal layer 122 comprises with ink-jet method and forming.By one being fluid ejection apparatus 130A, for example thermal drives ink gun or piezoelectric ink-jet head, with liquid crystal with drop 121 form sprays in each pixel region 120.According to the embodiment of the invention, liquid crystal material can be selected for use and comprise stable twisted nematic, cholesterol type, stratose type, plate-like type or liquid to type liquid crystal molecule material, and the scope of its proportion is on the whole between 0.7-1.5g/cm
3
The embodiment of the invention also can be inserted the liquid crystal material of different optical effect in the different pixel cells at the optical design of plurality of liquid crystals.For example, adopt the cholesterol liquid crystal of different reflected wavebands, produce colored cholesterin liquid-crystal display.
See also Fig. 5, insert a monomer molecule layer in each pixel region 120, and be positioned on the liquid crystal layer 122.The formation step of monomer molecule layer comprises with ink-jet method and forming.By one being fluid ejection apparatus 130B, for example thermal drives ink gun or piezoelectric ink-jet head, with monomer with drop 123 form sprays in each pixel region 120, and be positioned on the liquid crystal layer 122.According to the embodiment of the invention, the monomer material kind comprises double methacrylate (diacrylate) and mono acrylic ester (monoacrylate), or other has the monomer material of two keys, through after the optical excitation, is dissociated into radical form and forms polymkeric substance with other combined with radical.In addition, look the monomer material difference and whether can select to add initiator to help monomer polymerization.The scope of the proportion of the unimolecule material in the monomer molecule layer is on the whole between 0.5-1.7g/cm
3
Because liquid crystal layer 122 forms in different spray cloth steps with the monomer molecule layer, and has different proportion, therefore can form the phase of separation.According to another embodiment of the present invention, liquid crystal layer 122 and monomer molecule layer can be selected the material of opposed polarity for use, to form being separated of nature.
See also Fig. 6, the polymerization single polymerization monomer molecular layer makes becomes a polymer material layer 124, and is separated with these liquid crystal layer 122 formation.The polymerization procedure of monomer molecule layer comprises irradiation polymerization, legal, the radical polymerization of hot polymerization.For example, the substrate 100 that sprays cloth monomer molecule layer is placed the environment that is provided with ultraviolet light (UV) irradiation devices 150.The monomer molecule layer is again through forming polymer material layer 124 behind the ultraviolet light irradiation.According to another embodiment of the present invention, in the ultraviolet light irradiation process, can select to apply bias voltage, make its polymerization become polymer material layer 124.
Then, in successive process, can form the second electrode lay and chromatic filter layer (not shown) on polymer material layer 124.After control circuit electrically connects or encapsulates, finish LCD 10.
According to the embodiment of the invention, also the effect with prior art is different with the selection of material for the manufacture method of LCD 10.Employed phase separation method of past all mixes liquid crystal earlier with high polymer monomer, utilize the mode of irradiation to be separated again, and the method causes too much macromolecule to residue in liquid crystal display area easily, and causes display quality to descend.And mode of the present invention is earlier liquid crystal material to be sprayed in the middle of the pixel of definition, again will with the almost completely incompatible high polymer monomer material ink-jet of liquid crystal to liquid crystal layer, utilize in addition polymerization of outside resources at last.
Feature of the present invention and advantage:
The invention has the advantages that the manufacture method that a LCD is provided, use the monobasal framework, by the selection of the material that is separated, reach the effect of the display quality that promotes the monobasal framework, and then produce with colorize, Memorability, soft display.Manufacture method of the present invention has following several advantages:
(1) therefore single layer substrate framework has good bendability.
(2) pixel definition in response to the optical design of plurality of liquid crystals, is inserted the liquid crystal material of different optical effect in the different pixel cells, for example adopts the cholesterol liquid crystal of different reflected wavebands, produces colored cholesterin liquid-crystal display etc.
(3) twice coating, utilize the mode of twice coating, though increase the time that display is made since can select for use with the almost immiscible high polymer monomer of liquid crystal as encapsulated layer, therefore can significantly promote the purity of the liquid crystal region behind the processing procedure that is separated, optical quality is promoted.
(4) the height alternative of high polymer monomer, because traditional phase separation method, must consider liquid crystal and high molecular mutual solubility, therefore make the alternative of high polymer monomer descend, as design according to twice coating of the present invention, except that can increasing the high polymer monomer selectivity, even can make with the light alignment materials as encapsulated layer.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
30: power supply unit
32: cavity
34,36: upper and lower electrode
38: liquid crystal layer
UV: exposure light
10: LCD
100: substrate
102: both alignment layers
110: raised structures
120: pixel region
122: liquid crystal layer
130A, 130B: fluid ejection apparatus
121: liquid crystal droplet
123: the monomer molecule drop
124: polymer material layer
150: irradiation devices
S10-S70: the making step of LCD
Claims (24)
1. the manufacture method of a LCD, the manufacture method of described LCD comprises:
One substrate is provided, has one first electrode layer on it;
Form a patterning raised structures on this substrate, to separate into a plurality of pixel regions;
Insert a liquid crystal layer in each pixel region;
Insert a monomer molecule layer in each pixel region, and be positioned on this liquid crystal layer; And
This monomer molecule layer of polymerization makes and becomes a polymer material layer, and is separated with this liquid crystal layer formation.
2. the manufacture method of LCD according to claim 1, it is characterized in that: this substrate comprises glass substrate, metal substrate or plastic base.
3. the manufacture method of LCD according to claim 1, it is characterized in that: this substrate comprises base plate of array in active mode.
4. the manufacture method of LCD according to claim 1, it is characterized in that: this first electrode layer comprises organic conductive material or inorganic conductive material.
5. the manufacture method of LCD according to claim 1 is characterized in that: this first electrode layer comprises many parallel electrodes or refers to dredge the shape electrode, to form transverse electric field.
6. the manufacture method of LCD according to claim 1 is characterized in that: more comprise forming a both alignment layers on this first electrode layer.
7. the manufacture method of LCD according to claim 6, it is characterized in that: this both alignment layers comprises polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.
8. the manufacture method of LCD according to claim 1 is characterized in that: the step that forms this raised structures comprises with little shadow, printing or rubbing method and forming.
9. the manufacture method of LCD according to claim 1 is characterized in that: the step that forms this liquid crystal layer comprises with ink-jet method and forming.
10. the manufacture method of LCD according to claim 1, it is characterized in that: this liquid crystal layer comprises that stable twisted nematic, cholesterol type, stratose type, plate-like type or liquid are to type liquid crystal molecule material.
11. the manufacture method of LCD according to claim 1 is characterized in that: the scope of the proportion of the liquid crystal material in this liquid crystal layer is between 0.7-1.5g/cm
3
12. the manufacture method of LCD according to claim 1 is characterized in that: the step that forms this monomer molecule layer comprises with ink-jet method and forming.
13. the manufacture method of LCD according to claim 1 is characterized in that: the step of this monomer molecule layer of polymerization comprises irradiation polymerization, legal, the radical polymerization of hot polymerization.
14. the manufacture method of LCD according to claim 1 is characterized in that: the scope of the proportion of the unimolecule material in this monomer molecule layer is between 0.5-1.7g/cm
3
15. the manufacture method of LCD according to claim 1 is characterized in that: more comprise forming a second electrode lay on this polymer material layer.
16. the manufacture method of a LCD, the manufacture method of described LCD comprises:
One substrate is provided, has one first electrode layer on it;
Form a both alignment layers on this first electrode layer;
Form a patterning raised structures, to separate into a plurality of pixel regions;
Be coated with a liquid crystal layer in each pixel region with ink-jet method;
Be coated with a monomer molecule layer in each pixel region with ink-jet method, and be positioned on this liquid crystal layer;
This monomer molecule layer of polymerization makes and becomes a polymer material layer, and is separated with this liquid crystal layer formation; And
Form a second electrode lay on this polymer material layer.
17. the manufacture method of LCD according to claim 16 is characterized in that: this substrate comprises base plate of array in active mode.
18. the manufacture method of LCD according to claim 16 is characterized in that: this first electrode layer comprises many parallel electrodes or refers to dredge the shape electrode, to form transverse electric field.
19. the manufacture method of LCD according to claim 16 is characterized in that: this both alignment layers comprises polyvinyl alcohol (PVA), pi, polyamide, polyureas, nylon, silicon dioxide or lecithin.
20. the manufacture method of LCD according to claim 16 is characterized in that: the step that forms this raised structures comprises with little shadow, printing or rubbing method formation.
21. the manufacture method of LCD according to claim 16 is characterized in that: this liquid crystal layer comprises that stable twisted nematic, cholesterol type, stratose type, plate-like type or liquid are to type liquid crystal molecule material.
22. the manufacture method of LCD according to claim 16 is characterized in that: the scope of the proportion of the liquid crystal material in this liquid crystal layer is between 0.7-1.5g/cm
3
23. the manufacture method of LCD according to claim 16 is characterized in that: the step of this monomer molecule layer of polymerization comprises irradiation polymerization, legal, the radical polymerization of hot polymerization.
24. the manufacture method of LCD according to claim 16 is characterized in that: the scope of the proportion of the unimolecule material in this monomer molecule layer is between 0.5-1.7g/cm
3
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| CNB2005100751783A CN100410738C (en) | 2005-06-10 | 2005-06-10 | Method for manufacturing liquid crystal display device |
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| CNB2005100751783A CN100410738C (en) | 2005-06-10 | 2005-06-10 | Method for manufacturing liquid crystal display device |
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| CN100410738C true CN100410738C (en) | 2008-08-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101634789B (en) * | 2009-08-25 | 2013-06-12 | 友达光电股份有限公司 | Pixel structure and manufacture method thereof |
| CN102736304A (en) | 2012-06-21 | 2012-10-17 | 京东方科技集团股份有限公司 | Single-substrate display panel and manufacturing method thereof |
| CN105785627A (en) * | 2012-06-21 | 2016-07-20 | 京东方科技集团股份有限公司 | Single-substrate display panel and manufacturing method thereof |
| CN104375307A (en) * | 2014-11-11 | 2015-02-25 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and manufacturing method thereof |
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| JPH085994A (en) * | 1994-06-17 | 1996-01-12 | Mitsubishi Electric Corp | Polymer dispersion type liquid crystal display element |
| JPH11326911A (en) * | 1998-05-15 | 1999-11-26 | Fuji Xerox Co Ltd | Reflection type liquid crystal display element and its production |
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