CN108628016A - The production method of liquid crystal display panel - Google Patents
The production method of liquid crystal display panel Download PDFInfo
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- CN108628016A CN108628016A CN201810609574.7A CN201810609574A CN108628016A CN 108628016 A CN108628016 A CN 108628016A CN 201810609574 A CN201810609574 A CN 201810609574A CN 108628016 A CN108628016 A CN 108628016A
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- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention provides a kind of production method of liquid crystal display panel, by being respectively formed the first photochromatic layer and the second photochromatic layer in array substrate and color membrane substrates, to when the frame glue to be solidified between array substrate and color membrane substrates carries out UV solidifications, first photochromatic layer becomes black with the second photochromatic layer under the irradiation of ultraviolet light, it can stop the ultraviolet light liquid crystal layer, prevent liquid crystal layer abnormal because ultraviolet irradiation generates, compared with the prior art, it can be omitted one of UV light shield, therefore when making various sizes of liquid crystal display panel, UV light shields need not be replaced, it is effectively simplified processing procedure.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of production methods of liquid crystal display panel.
Background technology
With the development of display technology, the planes such as liquid crystal display (Liquid Crystal Display, LCD) display dress
It sets because having many advantages, such as that high image quality, power saving, fuselage is thin and has a wide range of application, and is widely used in mobile phone, TV, a number
The various consumer electrical products such as word assistant, digital camera, laptop, desktop computer, become the master in display device
Stream.
Liquid crystal display device on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and
Backlight module (backlight module).The operation principle of liquid crystal display panel is put in the parallel glass substrate of two panels
Liquid crystal molecule is set, there are many tiny electric wires vertically and horizontally for two panels glass substrate centre, and liquid crystal is controlled whether by being powered
The light refraction of backlight module is out generated picture by molecular changes direction.
Usual liquid crystal display panel is by color film (CF, Color Filter) substrate, thin film transistor (TFT) (TFT, Thin Film
Transistor) substrate, the liquid crystal (LC, Liquid Crystal) that is sandwiched between color membrane substrates and thin film transistor base plate and close
Sealing frame (Sealant) forms, and moulding process generally comprises：Leading portion array (Array) processing procedure (film, yellow light, etching and stripping
Film), stage casing is at box (Cell) processing procedure (TFT substrate is bonded with CF substrates) and back segment module group assembling processing procedure (drive integrated circult
(IC) it is pressed with printed circuit board).Wherein, leading portion Array processing procedures mainly form TFT substrate, in order to control liquid crystal molecule
Movement；Stage casing Cell processing procedures mainly add liquid crystal between TFT substrate and CF substrates；Back segment module group assembling processing procedure is mainly
The integration of IC pressing and printed circuit board is driven, and then drives liquid crystal molecule rotation, shows image.
In TFT-LCD manufacturing process, when liquid crystal drop process (ODF), must carry out sealant ultra-violet curing, heat cure, prevent
Only liquid crystal is contacted with sealant, and liquid crystal is caused to puncture, to cause product bad or scrap, when carrying out ultra-violet curing, in order to
It prevents effective display area from being irradiated by UV light and generates exception, UV light shields (Mask) is needed to be blocked, due to current design size crowd
More, corresponding sealant pattern must be also changed accordingly, and similarly the pattern of UV light shields must also do respective design, and switching is different
When sized products, need artificially to replace, process is risky.
Invention content
The purpose of the present invention is to provide a kind of production methods of liquid crystal display panel, can save one of UV light shield, have
Effect simplifies processing procedure.
To achieve the above object, the present invention provides a kind of production method of liquid crystal display panel, include the following steps：
Step S1, array substrate, color membrane substrates and alignment film material are provided, respectively in the array substrate and the coloured silk
Alignment film material is coated in ilm substrate, the alignment film material contains photochromic material；
Step S2, the array substrate and the alignment film material on the color membrane substrates are toasted, in the array
The first photochromatic layer and the first both alignment layers are sequentially formed on substrate, and it is photic that described second is sequentially formed on the color membrane substrates
Photochromic layer and the second both alignment layers；
Step S3, frame glue material and liquid crystal material are provided, first photochromatic layer is corresponded in the array substrate
Frame glue to be solidified is formed with the peripheral region coating frame glue material of the first both alignment layers, using liquid crystal drop process in the array base
Dispenser method material forms liquid crystal layer in first both alignment layers of plate；
Step S4, by the array substrate and the color membrane substrates to group being bonded；
Step S5, cure the frame glue shape to be solidified between the array substrate and the color membrane substrates by UV curing process
At frame glue, liquid crystal display panel is obtained.
In the step S1, the photochromic material is ultraviolet light induced discoloration reversible material.
The ultraviolet light induced discoloration reversible material is water white transparency, becomes black under ultraviolet light, stops ultraviolet light
Restore water white transparency after irradiation.
The ultraviolet light induced discoloration reversible material is 320nm~405nm in wavelength, and illumination is 90~200mW/cm2Purple
It is illuminated to partially change into black after outer light irradiation 5ms~200ms, it is small to place 6 hours~30 after stopping irradiation naturally in air
When after fade completely, become water white transparency again.
In the step S1, the alignment film material containing photochromic material include the first material, the second material and
Organic solvent, first material are polyimides and one kind in polyvinyl alcohol, and second material includes polyacrylamide
With more acid compounds.
More acid compounds are at least one of structure with Keggin phosphotungstic acid and structure with Keggin phosphomolybdic acid.
In the alignment film material containing photochromic material, the mass ratio of first material and second material
Example is 1：2~10.
The production method of the alignment film material containing photochromic material includes the following steps：
Step S11, first material, the second material and organic solvent are provided；
Step S12, first material is dissolved in the organic solvent, forms the first mixed solution；
Step S13, second material is dissolved in the organic solvent, forms the second mixed solution；
Step S14, first mixed solution and second mixed solution are uniformly mixed, are obtained containing photochromic
The alignment film material of material.
It is in water white transparency under first photochromatic layer and the second photochromatic layer normality；In the step S5,
UV curing process uses wavelength for the ultraviolet light of 320nm~405nm, and the illumination of the ultraviolet light is 90~200mW/cm2。
In the step S5, first photochromatic layer is with second photochromatic layer in the ultraviolet light
It is illuminated to partially change into black after 5ms~200ms, stop after being placed 6 hours~30 hours naturally in air after irradiating completely
It fades, becomes water white transparency again.
Beneficial effects of the present invention：The production method of a kind of liquid crystal display panel provided by the invention, by array base
It is respectively formed the first photochromatic layer and the second photochromatic layer on plate and color membrane substrates, to when array substrate and color film base
When frame glue to be solidified between plate carries out UV solidifications, the photograph of first photochromatic layer and the second photochromatic layer in ultraviolet light
Penetrating down becomes black, can stop the ultraviolet light liquid crystal layer, prevents liquid crystal layer abnormal because ultraviolet irradiation generates, phase
Than in the prior art, it is convenient to omit the cured light shields of one of UV, therefore when making various sizes of liquid crystal display panel, be not required to
UV light shields are replaced, processing procedure is effectively simplified.
Description of the drawings
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the flow chart of the production method of the liquid crystal display panel of the present invention；
Fig. 2-Fig. 3 is the schematic diagram of the step S1 of the production method of the liquid crystal display panel of the present invention；
Fig. 4-Fig. 5 is the schematic diagram of the step S2 of the production method of the liquid crystal display panel of the present invention；
Fig. 6 is the schematic diagram of the step S3 of the production method of the liquid crystal display panel of the present invention；
Fig. 7 is the schematic diagram of the step S4 of the production method of the liquid crystal display panel of the present invention；
Fig. 8 is the schematic diagram of the step S5 of the production method of the liquid crystal display panel of the present invention.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Referring to Fig. 1, the present invention provides a kind of production method of liquid crystal display panel, include the following steps：
Step S1, array substrate 10, color membrane substrates 20 and alignment film material are provided, respectively the array substrate 10 with
It is coated with alignment film material on the color membrane substrates 20；The alignment film material contains photochromic material.
Specifically, in the step S1, the array substrate 10 includes the first underlay substrate 11 and is served as a contrast set on described first
TFT layer 12 on substrate 11；The color membrane substrates 20 are including the second underlay substrate 21 and are set to second underlay substrate 21
On color blocking layer 22.Further, in the step S1, the side that TFT layer 12 is equipped in first underlay substrate 11 is coated with
Alignment film material, the side that color blocking layer 22 is equipped in second underlay substrate 21 are coated with alignment film material.
Specifically, in the step S1, the alignment film material includes alignment materials and photochromic material, the orientation
Material is polyimides (PI) or polyvinyl alcohol (PVA), and the photochromic material is ultraviolet light induced discoloration reversible material, described
Ultraviolet light induced discoloration reversible material is water white transparency, becomes black under ultraviolet light, restores nothing after stopping ultraviolet light
Color is transparent.
Specifically, the ultraviolet light induced discoloration reversible material is 320nm~405nm in wavelength, and illumination is 90~200mW/
cm2Ultraviolet light 5ms~200ms after, it is illuminated to partially change into black, stop after irradiation that placement 6 is small naturally in air
When~fade completely after 30 hours, become water white transparency again.Preferably, the ultraviolet light induced discoloration reversible material is in wavelength
The ultraviolet light of 365nm, illumination 110mW/cm2Become black after irradiation.
Specifically, the alignment film material containing photochromic material includes the first material, the second material and organic molten
Agent, the photochromic material include the second material, and first material is in polyimides (PI) and polyvinyl alcohol (PVA)
One kind, second material include polyacrylamide (PAM) and more acid compounds, the polyacrylamide and polyacid class chemical combination
Object can form donor-receiver charge transfer compound.Optionally, more acid compounds be structure with Keggin phosphotungstic acid and
At least one of structure with Keggin phosphomolybdic acid.Certainly, the material selection of the photochromic material is not limited to this, as long as energy
Ensure that the material of discoloration block ultraviolet may be selected.
Specifically, the production method of the alignment film material containing photochromic material includes the following steps：
Step S11, first material, the second material and organic solvent are provided；
Step S12, first material is dissolved in the organic solvent, forms the first mixed solution；
Step S13, second material is dissolved in the organic solvent, forms the second mixed solution；
Step S14, first mixed solution and second mixed solution are uniformly mixed, are obtained containing photochromic
The alignment film material of material.
Specifically, the organic solvent that the step S12 is used is identical as the organic solvent that the step S13 is used or not
Together.
Preferably, in the alignment film material containing photochromic material, first material and second material
Mass ratio be 1：2~10, certainly, according to the use of actual conditions, the ratio of first material and second material
It can be adjusted.
Step S2, the array substrate 10 and the alignment film material on the color membrane substrates 20 are toasted, described
The first photochromatic layer 13 and the first both alignment layers 14 are sequentially formed in array substrate 10, are sequentially formed on the color membrane substrates 20
Second photochromatic layer, 23 and second both alignment layers 24.
Specifically, in the step S2, to the alignment film material in the array substrate 10 and the color membrane substrates 20
When baking, for the alignment film material by thermally stratified layer, the photochromic material in the alignment film material is deposited on bottom, described to match
Alignment film material into membrane material is in top layer, and the photochromic material to be located at bottom in the alignment film material is distinguished
The first photochromatic layer 13 and the second photochromatic layer 23 are formed in the array substrate 10 and the color membrane substrates 20, it is described
Alignment film material in alignment film material positioned at top layer is photochromic in first photochromatic layer 13 and described second respectively
The first both alignment layers 14 and the second both alignment layers 24 are formed on layer 23.
Specifically, first photochromatic layer 13 is sequentially located at the array substrate 10 with first both alignment layers 14
On TFT layer 12, second photochromatic layer 23 is sequentially located at the color blocking of the color membrane substrates 20 with second both alignment layers 24
On layer 22.
Specifically, first photochromatic layer 13 and 23 normality of the second photochromatic layer are in water white transparency, in purple
Become black under the irradiation of outer light, water white transparency is become again after the irradiation for stopping ultraviolet light.
Step S3, frame glue material and liquid crystal material are provided, it is photochromic that described first is corresponded in the array substrate 10
The peripheral region of layer 13 and the first both alignment layers 14 coating frame glue material forms frame glue 41 to be solidified, using liquid crystal drop process in institute
It states dispenser method material in the first both alignment layers 14 of array substrate 10 and forms liquid crystal layer 30.
Specifically, in the step S3, the frame glue 41 to be solidified is formed in the array substrate with the liquid crystal layer 30
10 correspond to the side of first photochromatic layer 13 and first both alignment layers 14.
Step S4, by the array substrate 10 and the color membrane substrates 20 to group being bonded.
Specifically, in the step S4, by the array substrate 10 and the color membrane substrates 20 to group in vacuum environment
Fitting.
Specifically, in the step S4, the color membrane substrates 20 are matched equipped with the second photochromatic layer 23 and described second
To the side of layer 24 and the side for being equipped with the frame glue 41 to be solidified and the liquid crystal layer 30 of the array substrate 10 to a group patch
It closes.
Step S5, cure the frame to be solidified between the array substrate 10 and the color membrane substrates 20 by UV curing process
Glue 41 forms frame glue 40, obtains liquid crystal display panel.
Specifically, in the step S5, the frame glue to be solidified between the array substrate 10 and the color membrane substrates 20
41 when carrying out UV solidifications, the first photochromatic layer 13 of the array substrate 10 and the second of the color membrane substrates 20 photochromic
Layer 23 becomes black under the irradiation of ultraviolet light and is irradiated to liquid crystal layer 30 with block ultraviolet, prevents liquid crystal layer 30 because of ultraviolet light
Irradiation generates exception, can be omitted one of UV light shield based on this, and due to first photochromatic layer 13 and second light
Mutagens chromatograph 23 is formed simultaneously when forming the first both alignment layers 14 with the second both alignment layers 24, therefore need not be increased together
The processing procedure of photochromatic layer is made, therefore will not be had any impact to existing processing procedure.
Specifically, in the step S5, UV curing process uses wavelength for the ultraviolet light of 320nm~405nm, described ultraviolet
The illumination of light is 90~200mW/cm2, first photochromatic layer, 13 and second photochromatic layer 23 is in the ultraviolet light
It is illuminated to partially change into black after 5ms~200ms, stop after being placed 6 hours~30 hours naturally in air after irradiating completely
It fades, becomes water white transparency again.Preferably, the wavelength of the ultraviolet light is 365nm, illumination 110mW/cm2.According to actual conditions
Use, the wavelength and illumination of the ultraviolet light can also be selected beyond above range, as long as can guarantee liquid crystal display
It does not turn black i.e. under the irradiation of visible light of the first photochromatic layer 13 and the second photochromatic layer 23 of panel in nature
It can.
Specifically, in the step S5, liquid crystal display panel includes viewing area and is shown positioned at the non-of the non-display area
Show area, first photochromatic layer 13, the first both alignment layers 14, the second photochromatic layer 23, the second both alignment layers 24 and liquid crystal layer
30 are located at the periphery of the viewing area, i.e. institute in the projection of the array substrate 10 and the display area overlapping, the frame glue 40
Frame glue 40 is stated to be located in the non-display area.
It should be noted that liquid crystal display panel made from the production method of the liquid crystal display panel of the present invention includes opposite
The array substrate 10 and color membrane substrates 20 of setting and the liquid crystal between the array substrate 10 and the color membrane substrates 20
Layer 30 and frame glue 40, the array substrate 10 include the first photochromatic layer 13, and the color membrane substrates 20 include the second light-induced variable
Chromatograph 23, it is described when the frame glue to be solidified 41 between the array substrate 10 and the color membrane substrates 20 carries out UV solidifications
First photochromatic layer 13 can become with second photochromatic layer 23 in the case where the illumination of ultraviolet light is 90~200mW/cm2 irradiations
For black, to prevent ultraviolet light from causing exception to the irradiation of liquid crystal layer 30, and the liquid crystal display panel is during routine use,
It, will not be to first photochromatic layer 13 and second photochromatic layer 23 since the ultraviolet ray intensity in nature is too low
There are any influence, first photochromatic layer 13 not to become in the ultraviolet light of nature with second photochromatic layer 23
At black, therefore the normal use of user is not interfered with.
In conclusion the production method of the liquid crystal display panel of the present invention in array substrate and color membrane substrates by distinguishing
The first photochromatic layer and the second photochromatic layer are formed, to when the frame glue to be solidified between array substrate and color membrane substrates
When carrying out UV solidifications, first photochromatic layer becomes black with the second photochromatic layer under the irradiation of ultraviolet light, can
Stop the ultraviolet light liquid crystal layer, prevents liquid crystal layer abnormal because ultraviolet irradiation generates, it compared with the prior art, can be with
One of UV light shield is omitted, therefore when making various sizes of liquid crystal display panel, UV light shields need not be replaced, be effectively simplified
Processing procedure.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the claims in the present invention
Protection domain.
Claims (10)
1. a kind of production method of liquid crystal display panel, which is characterized in that include the following steps：
Step S1, array substrate (10), color membrane substrates (20) and alignment film material are provided, respectively in the array substrate (10)
With alignment film material is coated on the color membrane substrates (20), the alignment film material contains photochromic material；
Step S2, the array substrate (10) and the alignment film material on the color membrane substrates (20) are toasted, described
The first photochromatic layer (13) and the first both alignment layers (14) are sequentially formed in array substrate (10), on the color membrane substrates (20)
Sequentially form second photochromatic layer (23) and the second both alignment layers (24)；
Step S3, frame glue material and liquid crystal material are provided, first photochromatic layer is corresponded in the array substrate (10)
(13) frame glue to be solidified (41) is formed with the peripheral region of the first both alignment layers (14) coating frame glue material, using liquid crystal drop process
Dispenser method material forms liquid crystal layer (30) in the first both alignment layers (14) of the array substrate (10)；
Step S4, by the array substrate (10) and the color membrane substrates (20) to group being bonded；
Step S5, cure the frame to be solidified between the array substrate (10) and the color membrane substrates (20) by UV curing process
Glue (41) forms frame glue (40), obtains liquid crystal display panel.
2. the production method of liquid crystal display panel as described in claim 1, which is characterized in that in the step S1, the light
Cause off-color material is ultraviolet light induced discoloration reversible material.
3. the production method of liquid crystal display panel as claimed in claim 2, which is characterized in that the ultraviolet light induced discoloration is reversible
Material is water white transparency, becomes black under ultraviolet light, restores water white transparency after stopping ultraviolet light.
4. the production method of liquid crystal display panel as claimed in claim 3, which is characterized in that the ultraviolet light induced discoloration is reversible
Material is 320nm~405nm in wavelength, and illumination is 90~200mW/cm2Ultraviolet light 5ms~200ms after, illuminated portion
Dividing becomes black, stops fading completely after placing 6 hours~30 hours naturally in air after irradiating, becomes water white transparency again.
5. the production method of liquid crystal display panel as described in claim 1, which is characterized in that described to contain in the step S1
It includes the first material, the second material and organic solvent to have the alignment film material of photochromic material, and first material is polyamides
Imines and one kind in polyvinyl alcohol, second material includes polyacrylamide and more acid compounds.
6. the production method of liquid crystal display panel as claimed in claim 5, which is characterized in that more acid compounds are
At least one of structure with Keggin phosphotungstic acid and structure with Keggin phosphomolybdic acid.
7. the production method of liquid crystal display panel as claimed in claim 5, which is characterized in that described to contain photochromic material
Alignment film material in, the mass ratio of first material and second material is 1：2~10.
8. the production method of liquid crystal display panel as claimed in claim 5, which is characterized in that described to contain photochromic material
The production method of alignment film material include the following steps：
Step S11, first material, the second material and organic solvent are provided；
Step S12, first material is dissolved in the organic solvent, forms the first mixed solution；
Step S13, second material is dissolved in the organic solvent, forms the second mixed solution；
Step S14, first mixed solution and second mixed solution are uniformly mixed, are obtained containing photochromic material
Alignment film material.
9. the production method of liquid crystal display panel as described in claim 1, which is characterized in that first photochromatic layer
(13) and under the second photochromatic layer (23) normality it is in water white transparency；In the step S5, UV curing process uses wavelength
Illumination for the ultraviolet light of 320nm~405nm, the ultraviolet light is 90~200mW/cm2。
10. the production method of liquid crystal display panel as claimed in claim 9, which is characterized in that in the step S5, described
One photochromatic layer (13) and second photochromatic layer (23) are after the ultraviolet light 5ms~200ms, illuminated portion
Dividing becomes black, stops fading completely after placing 6 hours~30 hours naturally in air after irradiating, becomes water white transparency again.
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| CN201810609574.7A CN108628016A (en) | 2018-06-13 | 2018-06-13 | The production method of liquid crystal display panel |
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| CN201810609574.7A CN108628016A (en) | 2018-06-13 | 2018-06-13 | The production method of liquid crystal display panel |
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|---|---|---|---|---|
| US20100213423A1 (en) * | 2009-02-26 | 2010-08-26 | Au Optronics Corporation | Alignment material composition and alignment layer |
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| CN105038818A (en) * | 2014-04-25 | 2015-11-11 | 奇美实业股份有限公司 | Liquid crystal alignment agent and application thereof |
| CN105154059A (en) * | 2015-09-25 | 2015-12-16 | 冯威 | Photochromic material for laser printing and manufacturing method thereof and printing paper |
| CN108117873A (en) * | 2016-11-29 | 2018-06-05 | 京东方科技集团股份有限公司 | Oriented material composition, liquid crystal display panel and preparation method thereof, display device |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100213423A1 (en) * | 2009-02-26 | 2010-08-26 | Au Optronics Corporation | Alignment material composition and alignment layer |
| CN105038818A (en) * | 2014-04-25 | 2015-11-11 | 奇美实业股份有限公司 | Liquid crystal alignment agent and application thereof |
| CN104818653A (en) * | 2015-04-09 | 2015-08-05 | 李冠纯 | Ultraviolet photochromic repeatedly usable paper |
| CN105154059A (en) * | 2015-09-25 | 2015-12-16 | 冯威 | Photochromic material for laser printing and manufacturing method thereof and printing paper |
| CN108117873A (en) * | 2016-11-29 | 2018-06-05 | 京东方科技集团股份有限公司 | Oriented material composition, liquid crystal display panel and preparation method thereof, display device |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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Application publication date: 20181009 |