CN103969889A - Method for forming liquid crystal alignment film, manufacturing method of display board and display board - Google Patents
Method for forming liquid crystal alignment film, manufacturing method of display board and display board Download PDFInfo
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- CN103969889A CN103969889A CN201310030920.3A CN201310030920A CN103969889A CN 103969889 A CN103969889 A CN 103969889A CN 201310030920 A CN201310030920 A CN 201310030920A CN 103969889 A CN103969889 A CN 103969889A
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Abstract
The invention discloses a method for forming a liquid crystal alignment film, which comprises the following steps of: firstly providing a substrate; then forming a bottom layer on the substrate; successively forming the first liquid crystal alignment film on the base layer, wherein the first liquid crystal alignment film contains a plurality of first organic molecules, and each first organic molecule comprises a first carboxyl group part and a first alkyl group part. The display board comprises the substrate, an opposite substrate, a liquid crystal layer and the first liquid crystal alignment film, wherein the substrate is oppositely arranged with the opposite substrate; the liquid crystal layer is arranged between the substrate and the opposite substrate; the first liquid crystal alignment film is arranged between the liquid crystal layer and the substrate.
Description
Technical field
The present invention relates to a kind of manufacture method and a kind of display board that forms the method for liquid crystal orienting film, a kind of display board, the organic molecule that particularly a kind of utilization has carboxyl and an alkyl form liquid crystal orienting film method, utilize this liquid crystal orienting film to form the manufacture method of display board and there is the display board of this liquid crystal orienting film.
Background technology
Because liquid crystal display has the advantages such as compact, widely be applied in various electronic product, such as mobile phone, individual Number code assistant (PDA) and notebook (notebook) etc., and along with the fast development of large scale liquid crystal display board technology, liquid crystal display becomes the main product of monitor market gradually.
In general liquid crystal display, the upper and lower surface that need contact at liquid crystal layer forms alignment film in order to control the tilt angle of liquid crystal molecule, the convenient arrangement situation of controlling liquid crystal molecule in the time driving and while driving.More common LCD alignment mode is first to form polyimide (polyimide, PI) film at present, and PI film is carried out rubbing and heats and admittedly bake, and uses so that liquid crystal molecule can be arranged along the upper direction that be rubbed of PI.But, because PI film need carry out the baking of higher temperatures (be generally about Celsius 180 degree more than), thus make to adopt cannot resistant to elevated temperatures plastic cement substrate or there is organic luminescent assembly substrate cannot form PI alignment film liquid crystal is carried out to orientation.In addition, also have at present develop utilize ultraviolet light (UV light) irradiate monomer-polymer in order to form the light orientation mode of vertical orientation copolymerization film.But this light orientation mode is while wanting to form alignment film in the substrate with organic luminescent assembly, is vulnerable to organic luminescent assembly and has influence on the light-struck homogeneity of UV and make orientation effect inconsistent.In addition, utilize in addition ion beam or superlaser to impact macromolecule membrane surface and reach in order to produce groove the effect of LCD alignment at special angle, destroy the problem of organic luminescent assembly but have while utilizing this mode to form alignment film in the substrate with organic luminescent assembly, and the equipment cost of this mode is expensive and be unfavorable for commercialization.
Summary of the invention
Object of the present invention is providing a kind of manufacture method and a kind of display board that forms the method for liquid crystal orienting film, a kind of display board, the organic molecule that utilization has carboxyl and alkyl at room temperature forms liquid crystal orienting film, reaches low temperature process and improves the effect of this liquid crystal orienting film range of application.
The invention provides a kind of method that forms liquid crystal orienting film, the method comprises the following steps.First, provide a substrate.Then, in substrate, form a bottom.Then, on bottom, form one first liquid crystal orienting film.The first liquid crystal orienting film comprises multiple the first organic molecules, and each the first organic molecule comprises one first carboxyl (carboxyl group ,-COOH) portion and one first alkyl (alkyl group, R) portion.
The invention provides a kind of manufacture method of display board, this manufacture method comprises the following steps.First, provide a substrate and a pair of basad.Then, in substrate, form a bottom.Then, on bottom, form one first liquid crystal orienting film.The first liquid crystal orienting film comprises multiple the first organic molecules, and each the first organic molecule comprises one first carboxyl portion and one first alkyl portion.Afterwards, in substrate and to forming a liquid crystal layer between basad.
The invention provides a kind of display board, comprise a substrate, a pair of basad a, liquid crystal layer and one first liquid crystal orienting film.Substrate is and is oppositely arranged basad.Liquid crystal layer is arranged on substrate and between basad.The first liquid crystal orienting film is arranged between liquid crystal layer and substrate.The first liquid crystal orienting film comprises multiple the first organic molecules, and each the first organic molecule comprises one first carboxyl portion and one first alkyl portion.
Brief description of the drawings
Figure 1 shows that the schematic diagram of the method for the formation liquid crystal orienting film of first preferred embodiment of the invention.
Figure 2 shows that the schematic flow sheet of the method for the formation liquid crystal orienting film of first preferred embodiment of the invention.Figure 3 shows that the schematic flow sheet of the method for the formation liquid crystal orienting film of second preferred embodiment of the invention.Figure 4 shows that the schematic diagram of the display board of third preferred embodiment of the invention.
Figure 5 shows that the schematic diagram of the display board of four preferred embodiment of the invention.
Wherein, description of reference numerals is as follows:
Embodiment
Can further understand the present invention for making to have the knack of those skilled in the art, below spy enumerates several preferred embodiment of the present invention, and coordinates accompanying drawing, describes constitution content of the present invention in detail.
Please refer to Fig. 1 and Fig. 2.Figure 1 shows that the schematic diagram of the method for the formation liquid crystal orienting film of first preferred embodiment of the invention.Figure 2 shows that the schematic flow sheet of the method for the formation liquid crystal orienting film of the present embodiment.For convenience of description, each accompanying drawing of the present invention is only for signal is in order to easy understanding the present invention, and its detailed ratio can be adjusted according to the demand of design.As shown in Figures 1 and 2, the first preferred embodiment of the present invention provides a kind of method that forms liquid crystal orienting film, and the method comprises the following steps.First, carry out step S110, a substrate 111 is provided.Substrate 111 can comprise the substrate that for example substrate of glass of hard substrate and ceramic bases or for example plastic cement substrate of bendable substrate (flexible substrate) or other applicable materials form.Then, carry out step S120, in substrate 111, form a bottom 121.The bottom 121 of the present embodiment can comprise metal for example aluminium, iron, nickel and titanium, metal oxide for example aluminium oxide, iron oxide, titania, tin indium oxide (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO), aluminum zinc oxide (aluminum zinc oxide, AZO) with indium oxide gallium zinc (indium gallium zinc oxide, IGZO) or other applicable materials.Then, on bottom 121, form one first liquid crystal orienting film 131.The first liquid crystal orienting film 131 comprises multiple the first organic molecule 131C, and each the first organic molecule 131C comprises one first carboxyl (the carboxyl group ,-COOH) S1 of portion and one first alkyl (alkyl group, the R) S2 of portion.
Furtherly, the method of the formation liquid crystal orienting film of the present embodiment can be carried out an evaporation process in order to form the first liquid crystal orienting film 131 on bottom 121 in step S131, and evaporation process can comprise a vapor deposition source (the present embodiment is stearic acid) is heated, with so that the first organic molecule 131C be formed on bottom 121 in a self assembly (self aligned) mode, but not as limit.The first S1 of carboxyl portion of each the first organic molecule 131C can form bond and the first S1 of carboxyl portion of each the first organic molecule 131C is connected with bottom 121 with the surface of bottom 121.Therefore, the surface that does not form bottom 121 in substrate 111 will be not can not form and be connected with the first organic molecule 131C, therefore can reach whereby above-mentioned self assembly mode and form the effect of the first liquid crystal orienting film 131.In addition, the first organic molecule 131C of the present embodiment is preferably monocarboxylic acid (carboxylic acid) molecule or other and has the molecule of carboxylate radical.Be connected with bottom 121 by the first S1 of carboxyl portion, therefore the first S2 of alkyl portion of each the first organic molecule 131C can extend towards the direction of substrate 111 dorsad, and the situation that each the first S2 of alkyl portion arranges towards consistent direction can be used to liquid crystal molecule (Fig. 1 and Fig. 2 do not show) to produce orientation effect.In other words, the first S1 of carboxyl portion is arranged between the first S2 of alkyl portion and bottom 121.What deserves to be explained is, the method of the formation liquid crystal orienting film providing due to the present embodiment does not need substrate 111 to carry out high-temperature heating and do not need yet substrate 111 is carried out to physical property contact failure, therefore can reach the demand that meets low temperature process and the object that improves liquid crystal orienting film 131 ranges of application.
Please refer to Fig. 3, and please also refer to Fig. 1.Figure 3 shows that the schematic flow sheet of the method for the formation liquid crystal orienting film of second preferred embodiment of the invention.As shown in Figures 1 and 3, the place that the method for the formation liquid crystal orienting film of the present embodiment is different from above-mentioned the first preferred embodiment is, the method of the formation liquid crystal orienting film of the present embodiment is after step S120, to carry out step S132, carries out an immersion plating technology in order to form the first liquid crystal orienting film 131 on bottom 121.The first liquid crystal orienting film 131 comprises multiple the first organic molecule 131C, and each the first organic molecule 131C comprises the first S1 of carboxyl portion and one first S2 of alkyl portion.In other words, the generation type of the first liquid crystal orienting film 131 of the present invention preferably includes evaporation process described in above-mentioned the first preferred embodiment or the immersion plating technology of the present embodiment, but the present invention is as limit, and in other preferred embodiments of the present invention, also can optionally otherwise form the first liquid crystal orienting film 131.In addition, the method for the formation liquid crystal orienting film that the present embodiment provides does not need substrate 111 to carry out high-temperature heating and physical property contact failure yet, therefore can reach the demand that meets low temperature process and the object that improves liquid crystal orienting film 131 ranges of application.
Please refer to Fig. 4.Figure 4 shows that the schematic diagram of the display board of third preferred embodiment of the invention.As shown in Figure 4, the present embodiment provides a kind of manufacture method of display board, and this manufacture method comprises the following steps.First, provide substrate 111 and a pair of basad 112.Then, in substrate 111, form bottom 121.Then, on bottom 121, form the first liquid crystal orienting film 131.The first liquid crystal orienting film 131 comprises multiple the first organic molecule 131C, and each the first organic molecule 131C comprises one first S1 of carboxyl portion and one first S1 of alkyl portion.Afterwards, form a liquid crystal layer 140 in substrate 111 and between to basad 112.Close and in above-mentioned the first preferred embodiment and the second preferred embodiment, describe in detail in generation type and the material characteristics of the first liquid crystal orienting film 131, therefore at this and repeat no more.What deserves to be explained is, the manufacture method of the display board of the present embodiment can also be included on basad 112 and form one second liquid crystal orienting film 132.The second liquid crystal orienting film 132 comprises multiple the second organic molecule 132C, and each the second organic molecule 132C comprises one second S3 of carboxyl portion and one second S4 of alkyl portion.Material composition and the generation type of the second liquid crystal orienting film 132 are preferably identical with the first liquid crystal orienting film 131, but not as limit.In other words, the second organic molecule 132C preferably has identical composition with the first organic molecule 131C, the second S3 of carboxyl portion and the second S4 of alkyl portion are preferably identical with the first S1 of carboxyl portion and the first S2 of alkyl portion respectively, but the present invention is not as limit, and in other preferred embodiments of the present invention, also can optionally change the composition of the second S4 of alkyl portion, make the second S4 of alkyl portion and the first S2 of alkyl portion different in order to reach required orientation effect.In addition, in other preferred embodiments of the present invention, also can optionally otherwise form the second liquid crystal orienting film 132, in other words the second liquid crystal orienting film 132 also can comprise polyimide (polyimide, a PI) alignment film or form orientation effect with other macromolecular materials by physics mode or light orientation mode.
The liquid crystal layer 140 that also note that the present embodiment comprises multiple liquid crystal molecule 140M, and each liquid crystal molecule 140M is preferred for a vertical orientation (vertical alignment, VA) type liquid crystal molecule, but not as limit.In addition, the substrate 111 of the present embodiment is preferred for an array substrate (array substrate), and is preferred for a colorized optical filtering substrate (color filter substrate) to basad 112, but not as limit.Therefore, before the manufacture method of the present embodiment can also be included in the second liquid crystal orienting film 132 formation, first on to basad 112, form a bottom 122, and utilize the material of bottom 122 to select to make the second S3 of carboxyl portion of each the second organic molecule 132C in the second liquid crystal orienting film 132 form bond with bottom 122.The bottom 122 of the present embodiment can be considered a common electrode, and bottom 122 preferably can comprise metal oxide for example aluminium oxide, iron oxide, titania, tin indium oxide, indium zinc oxide, aluminum zinc oxide and indium oxide gallium zinc, but not as limit.In addition, substrate 111 is preferred for an array substrate and can comprises such as thin film transistor (TFT) of switch module (not shown), and bottom 121 also can be pixel electrode in order to drive liquid crystal molecule 140M.In other words, the bottom 121 of the present embodiment can be used on the layer in advance that forms bond with the first organic molecule 131C, and bottom 121 also can be used as in display board 100 in order to drive the pixel electrode of liquid crystal molecule 140M.Therefore the manufacture method of the present embodiment does not need extra manufacturing process to form bottom 121 and can match with the manufacturing process of existing general LCD panel.
Can complete display board 100 as shown in Figure 4 by the manufacture method of above-mentioned display board.Display board 100 comprises substrate 111, to basad 112, liquid crystal layer 140, bottom 121, the first liquid crystal orienting film 131, bottom 122 and the second liquid crystal orienting film 132.Substrate 111 is and is oppositely arranged basad 112.Liquid crystal layer 140 is arranged on substrate 111 and between basad 112.The first liquid crystal orienting film 131 is arranged between liquid crystal layer 140 and substrate 111, the second liquid crystal orienting film 132 be arranged on to basad 112 and liquid crystal layer 140 between, bottom 121 is arranged between substrate 111 and the first liquid crystal orienting film 131, and bottom 122 is arranged on basad 112 and second between liquid crystal orienting film 132.What deserves to be explained is, the first S1 of carboxyl portion of each the first organic molecule 131C is connected with bottom 121, and the second S3 of carboxyl portion of each the second organic molecule 132C is connected with bottom 122.Therefore, the second S4 of alkyl portion of the first S2 of alkyl portion of each the first organic molecule 131C and each the second organic molecule 132C extends towards liquid crystal layer 140 respectively, therefore can produce a vertical orientation effect for liquid crystal molecule 140M.In other words, the display board 100 of the present embodiment can be considered a LCD panel, but not as limit.
Please refer to Fig. 5.Figure 5 shows that the schematic diagram of the display board of four preferred embodiment of the invention.As shown in Figure 5, the present embodiment provides a display board 200, and the places different from above-mentioned the 3rd preferred embodiment are, display board 200 also comprises an organic luminescent assembly 150 and a protective seam 170.Organic luminescent assembly 150 is arranged between substrate 111 and the first liquid crystal orienting film 131, and protective seam 170 is arranged between organic luminescent assembly 150 and the first liquid crystal orienting film 131.In other words; before the manufacture method of the display board of the present embodiment can also be included in bottom 121 formation; in substrate 111, form organic luminescent assembly 150 and protective seam 170, use so that protective seam 170 covers the organic luminescent assembly 150 in substrate 111 and reaches protection effect.Bottom 121 is arranged on protective seam 170, in order to auxiliary first liquid crystal orienting film 131 that forms.In addition; display board 200 can also comprise that a cathode electrode 160 is arranged between organic luminescent assembly 150 and protective seam 170; and the substrate 111 of the present embodiment is preferred for an array substrate and is preferred for a colour filter array (color filter on array, COA) substrate to basad 112.What deserves to be explained is, the display board 200 of the present embodiment can drive organic luminescent assembly 150 to present a display effect by the substrate of array substrate 111 and cathode electrode 160, and display board 200 also can drive liquid crystal layer to present an other display effect by bottom 121 and bottom 122.
The bottom 121 of the present embodiment can be considered a common electrode and bottom 122 can be considered a pixel electrode, but not as limit.In other words, the display board 200 of the present embodiment can be considered that one has the bimodulus display board of liquid crystal display and organic light emitting display function simultaneously, and can be if necessary in switching between liquid crystal display pattern and organic light emitting display pattern or collocation use mutually.For instance, when cathode electrode 160 is one while having the material of translucent effect, organic luminescent assembly 150 can be a white light organic luminous assembly and provides similar and arrange in pairs or groups showing basad 112 of liquid crystal layer 140 and colour filter array substrate in general white light effect backlight.And liquid crystal layer 140 can not driven yet and only with drive organic luminescent assembly 150 show.In addition, when cathode electrode 160 be one have light reflecting effect material time, organic luminescent assembly 150 can carry out downwards luminous with show, liquid crystal layer 140 can utilize cathode electrode 160 to form reflection type liquid crystal display effect.Also please note; because the formation method of the first liquid crystal orienting film 131 of the present invention does not need substrate 111 to carry out high-temperature heating and physical property contact failure, do not have therefore can form the first liquid crystal orienting film 131 on organic luminescent assembly 150 and protective seam 170 situation that has influence on organic luminescent assembly 150.
In sum, the present invention utilizes the mode of evaporation or immersion plating that the organic molecule with carboxyl and alkyl is at room temperature formed to liquid crystal orienting film, reaches low temperature process and improves the effect of liquid crystal orienting film range of application.In addition, the present invention also utilizes this mode that forms liquid crystal orienting film to make the bimodulus display board simultaneously with liquid crystal display and organic light emitting display function.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (23)
1. a method that forms liquid crystal orienting film, is characterized in that, comprising:
One substrate is provided;
In this substrate, form a bottom; And
On this bottom, form one first liquid crystal orienting film, wherein this first liquid crystal orienting film comprises multiple the first organic molecules, and respectively this first organic molecule comprises one first carboxyl portion and one first alkyl portion.
2. the method for formation liquid crystal orienting film according to claim 1, is characterized in that, the generation type of this first liquid crystal orienting film comprises an evaporation process or an immersion plating technology.
3. the method for formation liquid crystal orienting film according to claim 2, is characterized in that, this evaporation process comprises stearic acid is heated, with so that those first organic molecules be formed on this bottom in a self assembly mode.
4. the method for formation liquid crystal orienting film according to claim 1, is characterized in that, respectively this first carboxyl portion of this first organic molecule is connected with this bottom.
5. the method for formation liquid crystal orienting film according to claim 1, is characterized in that, this bottom comprises metal or metal oxide.
6. a manufacture method for display board, is characterized in that, comprising:
One substrate and a pair of basad is provided;
In this substrate, form a bottom;
On this bottom, form one first liquid crystal orienting film, wherein this first liquid crystal orienting film comprises multiple the first organic molecules, and respectively this first organic molecule comprises one first carboxyl portion and one first alkyl portion;
And
In this substrate and this is to forming a liquid crystal layer between basad.
7. the manufacture method of display board according to claim 6, is characterized in that, the generation type of this first liquid crystal orienting film comprises an evaporation process or an immersion plating technology.
8. the manufacture method of display board according to claim 7, is characterized in that, this evaporation process comprises stearic acid is heated, with so that those first organic molecules be formed on this bottom in a self assembly mode.
9. the manufacture method of display board according to claim 6, is characterized in that, respectively this first carboxyl portion of this first organic molecule is connected with this bottom.
10. the manufacture method of display board according to claim 6, is characterized in that, this bottom comprises metal or metal oxide.
The manufacture method of 11. display boards according to claim 6, is characterized in that, this liquid crystal layer comprises multiple vertical orientation type liquid crystal molecules.
The manufacture method of 12. display boards according to claim 6, is characterized in that, this substrate comprises an array substrate, and this comprises a colorized optical filtering substrate to basad.
The manufacture method of 13. display boards according to claim 6, it is characterized in that, also be included in this to basad upper formation one second liquid crystal orienting film, wherein this second liquid crystal orienting film comprises multiple the second organic molecules, and respectively this second organic molecule comprises one second carboxyl portion and one second alkyl portion.
The manufacture method of 14. display boards according to claim 6; it is characterized in that; also be included in this substrate and form an organic luminescent assembly and a protective seam, wherein this protective seam is to cover this suprabasil this organic luminescent assembly, and this bottom is to form after this protective seam.
15. 1 kinds of display boards, is characterized in that, comprising:
One substrate and one and this substrate be oppositely arranged to basad;
One liquid crystal layer, is arranged on this substrate and this is between basad; And
One first liquid crystal orienting film, is arranged between this liquid crystal layer and this substrate, and wherein this first liquid crystal orienting film comprises multiple the first organic molecules, and respectively this first organic molecule comprises one first carboxyl portion and one first alkyl portion.
16. display boards according to claim 15, is characterized in that, also comprise that a bottom is arranged between this substrate and this first liquid crystal orienting film, and this bottom comprise metal or metal oxide.
17. display boards according to claim 16, is characterized in that, respectively this first carboxyl portion of this first organic molecule is connected with this bottom.
18. display boards according to claim 15, is characterized in that, this liquid crystal layer comprises multiple vertical orientation type liquid crystal molecules.
19. display boards according to claim 15, is characterized in that, this substrate comprises an array substrate, and this comprises a colorized optical filtering substrate to basad.
20. display boards according to claim 15, is characterized in that, this substrate comprises an array substrate, and this comprises a colour filter array substrate to basad.
21. display boards according to claim 15, it is characterized in that, also comprise that one second liquid crystal orienting film is arranged on this between basad and this liquid crystal layer, wherein this second liquid crystal orienting film comprises multiple the second organic molecules, and respectively this second organic molecule comprises one second carboxyl portion and one second alkyl portion.
22. display boards according to claim 15, is characterized in that, also comprise that an organic luminescent assembly is arranged between this substrate and this first liquid crystal orienting film.
23. display boards according to claim 22, is characterized in that, also comprise that a protective seam is arranged between this organic luminescent assembly and this first liquid crystal orienting film.
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| CN201310030920.3A CN103969889A (en) | 2013-01-28 | 2013-01-28 | Method for forming liquid crystal alignment film, manufacturing method of display board and display board |
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| CN201310030920.3A CN103969889A (en) | 2013-01-28 | 2013-01-28 | Method for forming liquid crystal alignment film, manufacturing method of display board and display board |
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| CN104597661A (en) * | 2014-11-21 | 2015-05-06 | 深圳市华星光电技术有限公司 | Vertical alignment liquid crystal display and manufacturing method thereof |
| CN106405944A (en) * | 2016-08-16 | 2017-02-15 | 友达光电股份有限公司 | Liquid crystal display panel and liquid crystal alignment method thereof |
| CN108008569A (en) * | 2016-10-27 | 2018-05-08 | 三星显示有限公司 | Display device |
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Application publication date: 20140806 |