CN103399431A - Photo-alignment exposure device of liquid crystal display - Google Patents
Photo-alignment exposure device of liquid crystal display Download PDFInfo
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- CN103399431A CN103399431A CN2013103690358A CN201310369035A CN103399431A CN 103399431 A CN103399431 A CN 103399431A CN 2013103690358 A CN2013103690358 A CN 2013103690358A CN 201310369035 A CN201310369035 A CN 201310369035A CN 103399431 A CN103399431 A CN 103399431A
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Abstract
The invention discloses a photo-alignment exposure device of a liquid crystal display, which is applied to a photo-alignment flow and comprises a refraction substrate, wherein the refraction substrate is arranged in parallel between a liquid crystal panel and an ultraviolet light illuminant, is molded integrally, and comprises a plurality of prism sheet units; the prism sheet units are triangular columnar bodies; first side surfaces of the prism sheet units are in the same shape, face upwards, and are arranged in lines to form an upper bottom surface of the refraction substrate; second side surfaces of the prism sheet units in the odd lines are positioned on the same side; and second side surfaces of the prism sheet units in the even lines are positioned on the same side in a reverse direction. With the adoption of the photo-alignment exposure device of the liquid crystal display, a procedure of rotating the ultraviolet light illuminant or the substrate and moving the ultraviolet light illuminant simultaneously in the traditional mode is avoided; a photomask in the traditional mode is omitted; a process of liquid crystal display photo-alignment is simplified; and the photo-alignment operation time is saved.
Description
Technical field
The present invention relates to the flat-panel screens field, specifically a kind of liquid crystal display light orientation exposure device.
Background technology
Along with social progress and development in science and technology, Thin Film Transistor-LCD (TFT-LCD) has become current era and has shown the main product in field, has played vital effect in commercial production, daily life, more and more is subject to people's favor.
At present, the common method for alignment of liquid crystal molecule is to the liquid crystal panel that scribbles alignment film 3 (PI) rub (Rubbing), this method is simple, convenient, yet but be difficult to avoid producing mechanical mark, pollution or static in friction process, affected the homogeneity of liquid crystal molecular orientation.Another light alignment method is a kind of liquid crystal panel 4 orientation new technologies that development in recent years is got up, namely by ultraviolet source 1 (UV) irradiation, photopolymerization, photic isomery or photic decomposition reaction occur in the alignment film 3 on initiation solution crystal panel 2, produce the anisotropy on surface, and then the method for the liquid crystal molecular orientation of induced liquid crystal layer 4, the method is a kind of non-contacting liquid crystal aligning technology, has overcome the shortcoming of friction orientation.Thereby the light alignment technique is a lot of than the friction orientation advanced technology.
In the light alignment technique, the macromolecule in alignment film 3 is coated on liquid crystal panel 2, this liquid crystal panel 2 is color membrane substrates or array base palte.As shown in Figures 2 and 3, the macromolecule in alignment film 3 is along with ultraviolet source 1 carries out multiple directions polarization UV exposure at x and y axle, and the exposure angle is 45 degree left and right approximately.As shown in Figure 4 and Figure 6, ultraviolet source 1 moves and rotates in x, y axle, and carry out different azimuth irradiation, allowing the composite force direction of liquid crystal molecule on x, y alignment direction of liquid crystal layer 4 do topples over, just can produce the design of multiple domain, (multi-domain), reduce liquid crystal display and change the variation that causes brightness with visual angle, reach without GTG counter-rotating and lower colour cast (color dispersion); And, in the situation that ultraviolet source 1 is fixing, for fear of the light orientation, interfere with each other, use photomask (Mask) that subregion is covered, do not cover zone this moment and will be subject to 1 irradiation of polarization ultraviolet source, so carry out light orientation meeting and spend the long time.
Summary of the invention
The objective of the invention is for the loaded down with trivial details problem consuming time of present liquid crystal display light process of alignment, provide and propose a kind of liquid crystal display light orientation exposure device that can expose simultaneously two or more direction light.
Technical scheme:
A kind of liquid crystal display light orientation exposure device, comprise
One luminescence unit comprises ultraviolet source and is positioned at the linear polarization mirror that its lower horizontal arranges that ultraviolet source sends initial light and change linearly polarized light into after the linear polarization mirror;
One light receiving unit, comprise liquid crystal panel, alignment film and liquid crystal layer, the parallel described linear polarization mirror below that is positioned at of liquid crystal panel, described alignment film is attached on liquid crystal panel, utilize light to change the lip-deep molecules align of alignment film to the irradiation of alignment film, so that the lip-deep molecule of alignment film presents multi-direction arrangement; Liquid crystal layer is arranged on alignment film, and liquid crystal molecule is subjected to inducing of alignment film and is orientated;
It also comprises a refraction substrate, and described refraction substrate is arranged in parallel between liquid crystal panel and ultraviolet source, the acceptance line polarizing light irradiation.Described refraction substrate is one-body molded, and it comprises a plurality of rhombus lens unit, and described rhombus lens unit is triangle column body.The first side surface direction level of described rhombus lens unit is arranged in ranks the upper bottom surface that forms described refraction substrate up, the second side of odd-numbered line rhombus lens unit is positioned at horizontal the same side, and the second side of even number line rhombus lens unit is positioned at horizontal opposite side.Linearly polarized light reflects during by the rhombus lens unit, and then at a certain angle according to liquid crystal and alignment film, carrying out the light orientation.
More excellent, described rhombus lens unit is the right-angle triangle column:
Its first right-angled side faces is the first side, and the direction level is arranged in ranks the upper bottom surface that forms described refraction substrate up;
Its second right-angled side faces is the second side, is also vertical plane, and the second right-angled side faces of odd-numbered line rhombus lens unit is positioned at the same side, and the second right-angled side faces of even number line rhombus lens unit is positioned at reverse the same side;
Its inclined edge surfaces is the 3rd side, and linearly polarized light reflects during by rhombus lens unit inclined edge surfaces, causes having specific angle according to the light to liquid crystal and alignment film, and this special angle is about 45 degree.
Further, the material of described refraction substrate is transparent material, as glass, acryl resin etc.
Further, the described refraction substrate that is comprised of the rhombus lens unit, the width of the every row in described rhombus lens unit are 1/4 ~ 1/2 of liquid crystal display neutron picture element length.
As a kind of embodiment, the shape of described rhombus lens unit is identical, and its 3rd side is consistent with the angle of the first side, and corner dimension is 45 degree.
As another kind of embodiment, the first side of described rhombus lens unit is identical, and its 3rd side is different from the angle of the first side, and corner dimension is 15 ~ 60 degree, and its angle guarantees that the ultraviolet light light that reflects and horizontal plane angle are 45 degree.
Described liquid crystal panel can be color film (CF) substrate or array (TFT) substrate.
Beneficial effect:
After adopting such liquid crystal display light orientation exposure device, linearly polarized light reflects when the 3rd side by the rhombus lens unit, according to the difference of the 3rd laterally inclined angle, controls the refract light angle.Due to the 3rd side of adjacent every row rhombus lens unit in the refraction substrate towards difference, cause refract light can expose the light of both direction simultaneously, rotation ultraviolet source or substrate and the operation of mobile ultraviolet source have simultaneously been avoided in the traditional approach, saved the photomask in the traditional approach (Mask), simplify the process of liquid crystal display light orientation, saved the light orientation activity duration.
Description of drawings
Fig. 1: the orientation of liquid crystal display light starts front light receiving unit schematic diagram
Fig. 2: Mask exposure schematic diagram in liquid crystal display light process of alignment in traditional approach
Fig. 3: light receiving unit schematic diagram after the orientation of liquid crystal display light finishes
Fig. 4: in traditional approach, the UV light source moves and the light process of alignment schematic diagram that rotates in the x axle
Fig. 5: in traditional approach, the UV light source moves and the light process of alignment schematic diagram that rotates in the y axle
Fig. 6: refraction base plate exposure schematic diagram in liquid crystal display light process of alignment of the present invention
Fig. 7: refraction substrate sectional view of the present invention
Fig. 8: the odd-numbered line rhombus lens unit exposure schematic diagram of composition refraction substrate of the present invention
Fig. 9: the even number line rhombus lens unit exposure schematic diagram of composition refraction substrate of the present invention
Figure 10: light receiving unit schematic diagram after liquid crystal display light orientation of the present invention finishes.
In figure, each label sign is as follows:
1: ultraviolet source, 2: liquid crystal panel, 3: alignment film, 4: liquid crystal layer, 5:Mask, 6: linear polarization mirror, 7: refraction substrate, 8: rhombus lens unit, 8-1: the first side, 8-2: the second side, 8-3: the 3rd side.
Embodiment:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
As shown in Fig. 6-10.A kind of liquid crystal display light orientation exposure device, comprise a luminescence unit, comprises ultraviolet source 1 and be positioned at the linear polarization mirror 6 that its lower horizontal arranges, and ultraviolet source 1 sends initial light and change linearly polarized light into after linear polarization mirror 6.This canted exposure device also comprises a light receiving unit, comprise liquid crystal panel 2, alignment film 3 and liquid crystal layer 4, parallel linear polarization mirror 6 belows that are positioned at of liquid crystal panel 2, has alignment film 3 on liquid crystal panel 2, by light, the irradiation of alignment film 3 is changed the lip-deep molecules align of alignment film 3, so that the lip-deep molecule of alignment film 3 presents multi-direction arrangement.Liquid crystal layer 4 is arranged on described alignment film 3, and the liquid crystal molecule of liquid crystal layer 4 is subjected to inducing of alignment film 3 and is orientated.
This canted exposure device also comprises a refraction substrate 7, and described refraction substrate 7 is arranged in parallel between liquid crystal panel 2 and ultraviolet source 1, the acceptance line polarizing light irradiation.Described refraction substrate 7 comprises a plurality of rhombus lens unit 8, and described rhombus lens unit 8 is triangle column body.The first side 8-1 direction level of described rhombus lens unit 8 is arranged in ranks the upper bottom surface that forms described refraction substrate 7 up, and the width of every row is that the width of the first side 8-1 of rhombus lens unit 8 is 1/4 of liquid crystal display neutron picture element length.The second side 8-2 of odd-numbered line rhombus lens unit 8 is positioned at horizontal the same side, and the second side 8-2 of even number line rhombus lens unit 8 is positioned at horizontal opposite side.Linearly polarized light reflects during by rhombus lens unit 8, and then at a certain angle according to alignment film 3, carrying out the light orientation.
The material of rhombus lens unit 8 is acryl resin.
In first embodiment, liquid crystal panel 2 is array base palte, and rhombus lens unit 8 is the identical right-angle triangle column of shape, and the angle of its inclined edge surfaces and the first right-angled side faces is 45 degree.
Its first right-angled side faces is the first side 8-1, and the direction level is arranged in ranks the upper bottom surface that forms described refraction substrate 7 up;
Its second right-angled side faces is the second side 8-2, and the second right-angled side faces of odd-numbered line rhombus lens unit 8 is positioned at the same side, and the second right-angled side faces of even number line rhombus lens unit 8 is positioned at reverse the same side;
Its inclined edge surfaces is the 3rd side 8-3, reflect during the inclined edge surfaces of linearly polarized light by rhombus lens unit 8, cause having specific angle according to the light to alignment film 3, towards the opposite due to the 3rd side 8-3 of odd-numbered line and even number line rhombus lens unit 8, therefore linearly polarized light is by after reflecting substrate, adjacent every row refract light, according to reverse at the component of surface level to the light of alignment film 3, can be completed the alignment manufacture process of liquid crystal molecule different directions simultaneously.And every row refract light do not interfere with each other, and need not to arrange photomask and carries out traditional shading operation.
In second embodiment, liquid crystal panel 2 is color membrane substrates, and rhombus lens unit 8 is variform right-angle triangle column, and the first right-angled side faces of rhombus lens unit 8 is identical, and its inclined edge surfaces is different from the angle of the first right-angled side faces.
Its first right-angled side faces is the first side 8-1, and the direction level is arranged in ranks the upper bottom surface that forms described refraction substrate 7 up;
Its second right-angled side faces is the second side 8-2, and the second right-angled side faces of odd-numbered line rhombus lens unit 8 is positioned at the same side, and the second right-angled side faces of even number line rhombus lens unit 8 is positioned at reverse the same side;
Its inclined edge surfaces is the 3rd side 8-3, reflects during the inclined edge surfaces of linearly polarized light by rhombus lens unit 8.Wherein, the 3rd side 8-3 is different from the angle of the first side 8-1, corner dimension is according to apart from this rhombus lens unit 8, apart from the position of ultraviolet source 1, adjusting, thereby meets ultraviolet light after these rhombus lens unit 8 refractions, and the angle of its emergent light and surface level is 45 °.
Towards the opposite due to the 3rd side 8-3 of odd-numbered line and even number line rhombus lens unit 8, therefore linearly polarized light is by after reflecting substrate, adjacent every row refract light, according to reverse at the component of surface level to the light of alignment film 3, can be completed the alignment manufacture process of liquid crystal molecule different directions simultaneously.And every row refract light do not interfere with each other, and need not to arrange photomask and carries out traditional shading operation.
Above embodiment is only for explanation the present invention's, it is not limitation of the present invention, in the ken that described technical field technician possesses, can also make various variations under the prerequisite that does not break away from aim of the present invention, the part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (6)
1. liquid crystal display light orientation exposure device comprises:
One luminescence unit, comprise ultraviolet source and be positioned at the linear polarization mirror that its lower horizontal arranges;
One light receiving unit, comprise liquid crystal panel, alignment film and liquid crystal layer, the parallel described linear polarization mirror below that is positioned at of liquid crystal panel, and alignment film is attached on liquid crystal panel, and liquid crystal layer is positioned on alignment film;
It is characterized in that it also comprises a refraction substrate, described refraction substrate is arranged in parallel between liquid crystal panel and ultraviolet source, described refraction substrate is one-body molded, it comprises a plurality of rhombus lens unit, described rhombus lens unit is triangle column body, the first side surface direction of described rhombus lens unit is arranged in ranks the upper bottom surface that forms described refraction substrate up, the second side of odd-numbered line rhombus lens unit is positioned at horizontal the same side, and the second side of even number line rhombus lens unit is positioned at horizontal opposite side.
2. a kind of liquid crystal display light orientation exposure device according to claim 1, is characterized in that described rhombus lens unit is the right-angle triangle column.
3. a kind of liquid crystal display light orientation exposure device according to claim 1, is characterized in that described refraction substrate is transparent material.
4. a kind of liquid crystal display light orientation exposure device according to claim 1 and 2, is characterized in that the described refraction substrate that is comprised of the rhombus lens unit, and the width of the every row in described rhombus lens unit is 1/4 ~ 1/2 of liquid crystal display neutron picture element length.
5. a kind of liquid crystal display light orientation exposure device according to claim 1, is characterized in that the shape of described rhombus lens unit is identical, and its 3rd side is consistent with the angle of the first side, and corner dimension is 45 degree.
6. a kind of liquid crystal display light orientation exposure device according to claim 1, the first side that it is characterized in that described rhombus lens unit is identical, its the 3rd side is different from the angle of the first side, corner dimension is 15 ~ 60 degree, and its angle guarantees that the ultraviolet light light that reflects and horizontal plane angle are 45 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310369035.8A CN103399431B (en) | 2013-08-22 | 2013-08-22 | A kind of liquid crystal display light orientation exposure device |
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| CN201310369035.8A CN103399431B (en) | 2013-08-22 | 2013-08-22 | A kind of liquid crystal display light orientation exposure device |
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| CN103399431B CN103399431B (en) | 2016-08-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105068329A (en) * | 2015-09-23 | 2015-11-18 | 深圳市华星光电技术有限公司 | Light alignment device and space light splitting prism sheet thereof |
| CN105259710A (en) * | 2015-11-12 | 2016-01-20 | 深圳市华星光电技术有限公司 | Optical alignment photomask |
| CN108345180A (en) * | 2017-01-25 | 2018-07-31 | 上海微电子装备（集团）股份有限公司 | A kind of device and its application method of exposure and light orientation one |
| WO2019100493A1 (en) * | 2017-11-22 | 2019-05-31 | 深圳市华星光电半导体显示技术有限公司 | Preparation method and preparation device of alignment film |
| US11099436B2 (en) | 2017-11-22 | 2021-08-24 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Method and apparatus for manufacturing an alignment film |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068329A (en) * | 2015-09-23 | 2015-11-18 | 深圳市华星光电技术有限公司 | Light alignment device and space light splitting prism sheet thereof |
| WO2017049705A1 (en) * | 2015-09-23 | 2017-03-30 | 深圳市华星光电技术有限公司 | Photo-alignment device and spatial splitting prism member thereof |
| US9897815B2 (en) | 2015-09-23 | 2018-02-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Optical alignment device and spatial beam splitting prism thereof |
| CN105259710A (en) * | 2015-11-12 | 2016-01-20 | 深圳市华星光电技术有限公司 | Optical alignment photomask |
| CN105259710B (en) * | 2015-11-12 | 2018-09-14 | 深圳市华星光电技术有限公司 | Light orientation light shield |
| CN108345180A (en) * | 2017-01-25 | 2018-07-31 | 上海微电子装备（集团）股份有限公司 | A kind of device and its application method of exposure and light orientation one |
| WO2019100493A1 (en) * | 2017-11-22 | 2019-05-31 | 深圳市华星光电半导体显示技术有限公司 | Preparation method and preparation device of alignment film |
| US11099436B2 (en) | 2017-11-22 | 2021-08-24 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Method and apparatus for manufacturing an alignment film |
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| CN103399431B (en) | 2016-08-10 |
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