CN104102047A - Liquid crystal photo-alignment method - Google Patents
Liquid crystal photo-alignment method Download PDFInfo
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- CN104102047A CN104102047A CN201310143969.XA CN201310143969A CN104102047A CN 104102047 A CN104102047 A CN 104102047A CN 201310143969 A CN201310143969 A CN 201310143969A CN 104102047 A CN104102047 A CN 104102047A
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Abstract
一种液晶光配向方法，其包括如下步骤：提供第一基板及第二基板；于所述第一基板及第二基板上分别形成第一配向膜及第二配向膜；注入液晶以在第一配向膜及第二配向膜之间形成一液晶层；将超声波通入液晶层以消除静电。通过该液晶光配向方法能够清除液晶光配向过程中影响配向效果的多余静电，同时对液晶进行再次配向，提高配向的准确性。
A liquid crystal optical alignment method, which includes the following steps: providing a first substrate and a second substrate; forming a first alignment film and a second alignment film on the first substrate and the second substrate respectively; injecting liquid crystal to form a first alignment film on the first substrate and a second substrate; A liquid crystal layer is formed between the alignment film and the second alignment film; ultrasonic waves are passed into the liquid crystal layer to eliminate static electricity. This liquid crystal photo-alignment method can remove excess static electricity that affects the alignment effect during the liquid crystal photo-alignment process, and at the same time re-align the liquid crystal to improve the accuracy of alignment.
Description
Technical field
The present invention relates to the method for a kind of liquid crystal light orientation.
Background technology
Liquid crystal panel generally includes two piece substrates and is plugged in the liquid crystal layer between them, and liquid crystal panel produces electric field in liquid crystal layer by applying voltage, to determine the orientation of liquid crystal molecule in liquid crystal layer and to control the light transmission capacity of incident light, shows thereby produce image.
In a predetermined direction, light alignment method can form tilt angle to both alignment layers by irradiating ultraviolet light can to make in liquid crystal layer the initial orientation of liquid crystal molecule by the method for light orientation.But in the orientation of liquid crystal light, liquid crystal molecule can not be arranged according to predetermined direction often, affects the accuracy of orientation.
Summary of the invention
Given this, be necessary to provide a kind of liquid crystal light alignment method that can improve orientation accuracy.
The invention provides a kind of liquid crystal light alignment method, it comprises the steps: to provide first substrate and second substrate; On described first substrate and second substrate, form respectively the first alignment film and the second alignment film; Inject liquid crystal to form a liquid crystal layer between the first alignment film and the second alignment film; Ultrasound wave is passed into liquid crystal layer to eliminate static.
Another aspect of the present invention provides a kind of liquid crystal light alignment method, and it comprises the steps: to provide first substrate and second substrate; On described first substrate and second substrate, form respectively the first alignment film and the second alignment film; Between described the first alignment film and the second alignment film, inject liquid crystal and form a liquid crystal layer; Ultrasound wave is passed into liquid crystal layer and make at least part of liquid crystal be molten into liquid by liquid crystal and do not affect the orientation of the first alignment film and the second alignment film.
This method can be removed the unnecessary static that affects orientation effect in liquid crystal light process of alignment, liquid crystal is carried out to orientation again simultaneously, improves the accuracy of orientation.
Brief description of the drawings
Fig. 1 is the process flow diagram of liquid crystal light alignment method.
Fig. 2 is the structural representation of first substrate and second substrate.
Fig. 3 is the schematic diagram that uses orientation light to expose for the first time in light process of alignment.
Fig. 4 is the schematic diagram that after liquid crystal drip-injection, liquid crystal molecule is subject to electrostatic influence.
Fig. 5 uses hyperacoustic schematic diagram in light process of alignment.
Fig. 6 is the schematic diagram that uses orientation light to expose for the second time in light process of alignment.
Main element symbol description
| First substrate | 2 |
| The first alignment film | 21 |
| The first side chain | 211 |
| Liquid crystal layer | 3 |
| Liquid crystal molecule | 31 |
| Static | 33 |
| Second substrate | 4 |
| The second alignment film | 41 |
| The second side chain | 411 |
| Orientation light | 5 |
| Ultrasonic unit | 6 |
Following embodiment further illustrates the present invention in connection with described accompanying drawing.
Embodiment
In liquid crystal panel, liquid crystal molecule can not be arranged according to predetermined direction often completely, and the accuracy of orientation is not high.Find after deliberation, in the light alignment manufacture process of liquid crystal panel in the time that board carrying, laminating etc. operate owing to easily producing static in robotic arm activity, conveyer belt moving process, and liquid crystal molecule in liquid crystal panel can not be arranged according to the direction of expection under the interference of static, affect the accuracy of orientation.Therefore, can after processing at injection liquid crystal, eliminate static, to improve the accuracy rate of orientation.
The process flow diagram that is illustrated in figure 1 a kind of liquid crystal light alignment method that the specific embodiment of the invention provides, the method comprises the steps:
Step S201, as shown in Figure 2, provide first substrate 2 and second substrate 4, in the present embodiment, described first substrate 2 is thin-film transistor array base-plate (TFT Array Substrate), and described second substrate 4 is colored filter substrate (Color Filter Substrate).
Step S202 forms the first alignment film 21 on described first substrate 2, forms the second alignment film 41 on described second substrate 4.Described the first alignment film 21 and described the second alignment film 41 are light alignment film.In the present embodiment, described the first alignment film 21 and the second alignment film 41 are polyimide (Polyimide, PI) film.Described the first alignment film 21 comprises multiple the first side chains 211, described the second alignment film 41 comprises multiple the second side chains 411, thereby described the first side chain 211 and described the second side chain 411 are arranged adjacent with it liquid crystal molecule is arranged according to the direction identical with described the first side chain 211 and described the second side chain 411 along specific direction under the irradiation of orientation light.
Step S203, as shown in Figure 3, uses orientation light 5 to expose to the first alignment film 21 and the second alignment film 41.Particularly, described orientation light 5 is ultraviolet (Ultraviolet, UV) light.In the present embodiment, described orientation light 5 wavelength are no more than 400nm.Described orientation light 5 irradiates the first alignment film 21 and the second alignment film 41 with certain angle of inclination, and in described the first alignment film 21, in the first side chain 211 and described the second alignment film 41, the second side chain 411 collective under described orientation light 5 effects tilts to the angle identical with described orientation light 5 irradiating angles.
Step S204, as shown in Figure 4, carries out liquid crystal drip-injection after to be exposed.Particularly, liquid crystal drip-injection in described the second alignment film 41 surface and form a liquid crystal layer 3, is understandable that, liquid crystal also can instil in described the first alignment film 21 surfaces.Described liquid crystal layer 3 comprises that multiple liquid crystal molecules 31 and multiple form with doping are formed at the reactive monomer (Reactive Mesogen, RM) in liquid crystal layer 3, and described reactive monomer can polymerization under illumination effect and solidified to assist stable alignment.After completing, liquid crystal drip-injection first substrate 2 and second substrate 4 are carried out to pasting, the first alignment film 21 and second alignment film 41 of described second substrate 4 of described first substrate 2 are fitted face-to-face, thereby described liquid crystal layer 3 is located between described first substrate 2 and described second substrate 4.Clearer and more definite, described liquid crystal layer 3 is between described the first alignment film 21 and described the second alignment film 41.
Step S205, as shown in Figure 5, uses ultrasound wave melt crystal layer 3 to eliminate static.Particularly, by a ultrasonic unit 6, ultrasound wave is passed into described liquid crystal layer 3.The energy that utilizes the cavitation of ultrasound wave in liquid to produce heats up liquid crystal layer 3.Described the first alignment film 21 and described the second alignment film 41 are higher than uniform temperature, as 100 degrees Celsius, can there is reversible reaction described the first side chain 211 and described the second side chain 411 are reduced in time, but because liquid crystal melting temperature is conventionally in 70 degree left and right, there is needed temperature lower than described reversible reaction.Therefore, when liquid crystal temperature being controlled between liquid crystal melting temperature and the initial temperature of alignment film reversible reaction, as 70 degrees Celsius above and below 100 degrees Celsius, liquid crystal is molten into liquid by liquid crystal and does not affect the orientation of the first alignment film 21 and the second alignment film 41.Meanwhile, the static 33 of piling up on described first substrate 2 and second substrate 4 is removed from described liquid crystal layer 3 under hyperacoustic effect.Optimally, hyperacoustic frequency is no more than 5 megahertzes; In order to allow piled up static 33 reveal completely, continue ultrasound wave to pass into liquid crystal layer 3-10 minute.
Step S206, described liquid crystal is cooled to fusing point and again forms below liquid crystal, now because the static in described first substrate 2 and second substrate 4 is eliminated, liquid crystal molecule 31 proper alignment again under the effect of described the first side chain 211 and the second side chain 411.
As shown in Figure 6, reuse orientation light 5 described liquid crystal layer 3 is exposed, the reactive monomer in described liquid crystal layer 3 is polymerization curing under illumination effect, liquid crystal molecule 31 stable alignment in liquid crystal layer 3.
Be understandable that, can also comprise in the present embodiment the operation such as pre-treatment and sintering to the first alignment film 21 and the second alignment film 41, it is techniques well known, does not repeat them here.In the present invention, utilize ultrasound wave fusing liquid crystal to remove rapidly the static that affects LCD alignment, thereby can obtain stable LCD alignment.
Those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (18)
1. a liquid crystal light alignment method, it comprises the steps:
First substrate and second substrate are provided;
On described first substrate and second substrate, form respectively the first alignment film and the second alignment film;
Inject liquid crystal to form a liquid crystal layer between the first alignment film and the second alignment film;
Ultrasound wave is passed into liquid crystal layer to eliminate static.
2. liquid crystal light alignment method as claimed in claim 1, is characterized in that: described hyperacoustic frequency is no more than 5 megahertzes.
3. liquid crystal light alignment method as claimed in claim 2, is characterized in that: continue ultrasound wave to pass into liquid crystal layer 3 to 10 minutes.
4. liquid crystal light alignment method as claimed in claim 1, it is characterized in that: form respectively the first alignment film and the second alignment film on described first substrate and second substrate after and before injecting liquid crystal, use orientation light to expose to the first alignment film and the second alignment film.
5. liquid crystal light alignment method as claimed in claim 1, is characterized in that: in described ultrasound wave is passed into liquid crystal layer and static and is eliminated after, liquid crystal layer is cooled to normal temperature.
6. liquid crystal light alignment method as claimed in claim 5, is characterized in that: in liquid crystal layer is cooled to after normal temperature, use orientation light to expose to the first alignment film and the second alignment film.
7. liquid crystal light alignment method as claimed in claim 1, is characterized in that: described liquid crystal layer comprises multiple liquid crystal molecules and multiple reactive monomer, and described reactive monomer can polymerization curing under illumination effect.
8. liquid crystal light alignment method as claimed in claim 1, is characterized in that: described the first alignment film and described the second alignment film comprise polyimide film.
9. liquid crystal light alignment method as claimed in claim 1, is characterized in that: described orientation light is ultraviolet light, and described ultraviolet wavelength is no more than 400nm.
10. a liquid crystal light alignment method, it comprises the steps:
First substrate and second substrate are provided;
On described first substrate and second substrate, form respectively the first alignment film and the second alignment film;
Between described the first alignment film and the second alignment film, inject liquid crystal and form a liquid crystal layer;
Ultrasound wave is passed into liquid crystal layer and make at least part of liquid crystal be molten into liquid by liquid crystal and do not affect the orientation of the first alignment film and the second alignment film.
11. liquid crystal light alignment methods as claimed in claim 10, is characterized in that: described hyperacoustic frequency is no more than 5 megahertzes.
12. liquid crystal light alignment methods as claimed in claim 11, is characterized in that: continue ultrasound wave to pass into liquid crystal layer 3 to 10 minutes.
13. liquid crystal light alignment methods as claimed in claim 10, it is characterized in that: form respectively the first alignment film and the second alignment film on described first substrate and second substrate after and before injecting liquid crystal, use orientation light to expose to the first alignment film and the second alignment film.
14. liquid crystal light alignment methods as claimed in claim 10, is characterized in that: in stopping after ultrasound wave passes into that liquid crystal layer is cooled to normal temperature.
15. liquid crystal light alignment methods as claimed in claim 14, is characterized in that: in liquid crystal layer is cooled to after normal temperature, use orientation light to expose to the first alignment film and the second alignment film.
16. liquid crystal light alignment methods as claimed in claim 10, is characterized in that: described liquid crystal layer comprises multiple liquid crystal molecules and multiple reactive monomer, and described reactive monomer can polymerization curing under illumination effect.
17. liquid crystal light alignment methods as claimed in claim 10, is characterized in that: described the first alignment film and described the second alignment film comprise polyimide film.
18. liquid crystal light alignment methods as claimed in claim 10, is characterized in that: described orientation light is ultraviolet light, and described ultraviolet wavelength is no more than 400nm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102109387 | 2013-03-15 | ||
| TW102109387A TWI486691B (en) | 2013-03-15 | 2013-03-15 | A method of liquid crystal photo alignment |
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| Publication Number | Publication Date |
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| CN104102047A true CN104102047A (en) | 2014-10-15 |
| CN104102047B CN104102047B (en) | 2017-02-01 |
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| CN201310143969.XA Active CN104102047B (en) | 2013-03-15 | 2013-04-24 | Liquid crystal photo-alignment method |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05134254A (en) * | 1991-11-11 | 1993-05-28 | Matsushita Electric Ind Co Ltd | Orientation treatment and liquid crystal display using the treatment |
| KR100369778B1 (en) * | 2000-10-04 | 2003-01-29 | 삼성전자 주식회사 | Device for injecting a liquid crystal material, and Methods for manufacturing a liquid crystal panel using the same |
| CN101498865B (en) * | 2008-02-01 | 2011-05-04 | 清华大学 | LCD |
| CN102722052A (en) * | 2012-06-06 | 2012-10-10 | 深圳市华星光电技术有限公司 | Liquid crystal display panel, preparation process and display of liquid crystal display panel |
| CN102929023A (en) * | 2012-10-26 | 2013-02-13 | 南京华日液晶显示技术有限公司 | Method for manufacturing 2D/3D (two dimensional/three dimensional) display switchover parallax barrier grid by using LCD (Liquid Crystal Display) |
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2013
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| Publication number | Publication date |
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| CN104102047B (en) | 2017-02-01 |
| TW201435453A (en) | 2014-09-16 |
| TWI486691B (en) | 2015-06-01 |
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