CN109031716A - Liquid crystal voltage-stabilizing controller - Google Patents
Liquid crystal voltage-stabilizing controller Download PDFInfo
- Publication number
- CN109031716A CN109031716A CN201810899121.2A CN201810899121A CN109031716A CN 109031716 A CN109031716 A CN 109031716A CN 201810899121 A CN201810899121 A CN 201810899121A CN 109031716 A CN109031716 A CN 109031716A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- voltage
- supply case
- adjuster
- pressure measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Abstract
The present invention provides a kind of liquid crystal voltage-stabilizing controller, comprising: liquid crystal supply case；Liquid crystal water dropper is set to the underface of the liquid crystal supply case, is connect by conduit with the liquid crystal supply case；Voltage-stabilization control system, use is so that negative pressure and amount of liquid crystal keep balance；Wherein, the voltage-stabilization control system includes: pressure measurement cell；Adjuster；Control valve is set on the liquid crystal supply case.The utility model has the advantages that the present invention is by setting voltage-stabilization control system, can equilibrium relation between feedback regulation negative pressure and amount of liquid crystal so that the discharge-amount of liquid crystal is in stable state, and then ensure that product quality during liquid crystal coating；In addition, the present invention is capable of detecting when in liquid crystal supply case by setting bubble detector with the presence or absence of bubble, and then Improving The Quality of Products.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of liquid crystal voltage-stabilizing controllers.
Background technique
Liquid crystal display is widely used to various electronic products, and liquid crystal display is mostly negative phototropism liquid crystal display,
It is made of liquid crystal display panel and backlight module.Wherein, liquid crystal display panel usually by array substrate, color membrane substrates and is sealed in array
Liquid crystal layer composition between substrate and color membrane substrates.
In the assembling process of liquid crystal display panel, liquid crystal is filled and sealed between array substrate and color membrane substrates.
In the prior art, liquid crystal be usually be sprayed on by the way of inkjet printing (Inkjet) array substrate coated with sealant or
On person's color membrane substrates, currently, drippage display can be eliminated not by having in the way of piezoelectric ceramics progress droplet liquid crystal coating
Uniformly (Drop mura), the advantage that gap of liquid crystal cell (Cell gap) is low, Production Time is short.It is carried out using piezoelectric ceramics
When coating, in order to guarantee the stability of each discharge-amount of liquid crystal, needs accurately to control the negative pressure of water dropper (Head), guarantee liquid crystal
There are enough amount of liquid crystal in water dropper.But currently, the negative pressure that uses of coating is all the certain parameter value of setting, entirely it is being coated with
Process will not be changed with the size of amount of liquid crystal, however, during liquid crystal coating, it may appear that in negative pressure value and liquid crystal water dropper
The unmatched situation of amount of liquid crystal, influence liquid crystal discharge stability.
In conclusion the prior art is during carrying out liquid crystal coating using piezoelectric ceramics, it may appear that in negative pressure and water dropper
Amount of liquid crystal the case where not matching that, cause liquid crystal discharge-amount unstable.
Summary of the invention
The present invention provides a kind of liquid crystal voltage-stabilizing controller, the equilibrium relation being able to maintain that between negative pressure and amount of liquid crystal, with
Existing technology is solved, when carrying out liquid crystal coating, will not be changed with amount of liquid crystal after being set due to negative pressure one, to occur
Amount of liquid crystal in negative pressure and liquid crystal water dropper mismatches, and causes liquid crystal discharge-amount unstable, and then influences the quality problems of product.
To solve the above problems, technical solution provided by the invention is as follows:
The present invention provides a kind of liquid crystal voltage-stabilizing controller, comprising:
A kind of liquid crystal voltage-stabilizing controller characterized by comprising
Liquid crystal supply case；
Liquid crystal water dropper is set to the underface of the liquid crystal supply case, is connect by conduit with the liquid crystal supply case；
Voltage-stabilization control system, comprising: pressure measurement cell；Adjuster；Control valve is set on the liquid crystal supply case；
The signal output end of the signal input part of the adjuster and the pressure measurement cell is electrically connected, the signal of the adjuster
The signal input part of output end and the control valve is electrically connected；
When the amount of liquid crystal variation in the liquid crystal supply case, pressure signal is transferred to described by the pressure measurement cell
Adjuster, the adjuster issue feedback adjustment signal, control liquid crystal by the control valve by being compared with setting value
The supply of amount.
According to one preferred embodiment of the present invention, the adjuster be draft regulator, to receive pressure measurement signal and
Export vacuum cavitations signal.
According to one preferred embodiment of the present invention, the control valve is negative pressure control valve, to adjust negative pressure value.
According to one preferred embodiment of the present invention, the adjuster be liquid crystal adjuster, to receive pressure measurement signal and
It exports amount of liquid crystal and controls signal.
According to one preferred embodiment of the present invention, the control valve is LCD Controlling valve, to adjust liquid crystal magnitude.
According to one preferred embodiment of the present invention, the pressure measurement cell is set to liquid crystal supply bottom portion, described
Pressure measurement cell is concordant with the inner surface in liquid crystal supply bottom portion.
According to one preferred embodiment of the present invention, the pressure measurement cell is set to the bottom of the liquid crystal water dropper, described
Pressure measurement cell is concordant with the inner surface of liquid crystal water dropper bottom.
According to one preferred embodiment of the present invention, the control valve is set to the top of the liquid crystal supply case.
According to one preferred embodiment of the present invention, the liquid crystal voltage-stabilizing controller further includes being set to the liquid crystal supply case
Interior bubble detector.
According to one preferred embodiment of the present invention, the bubble detector includes transmitter and receiver.
According to one preferred embodiment of the present invention, the bubble detector be ultrasonic detector, infrared light detection instrument or
One of other optical instruments.
The invention has the benefit that the present invention passes through setting voltage-stabilization control system, it being capable of feedback regulation negative pressure and liquid crystal
Equilibrium relation between amount, so that the discharge-amount of liquid crystal is in stable state, and then ensure that product during liquid crystal coating
Quality；In addition, the present invention is capable of detecting when in liquid crystal supply case by setting bubble detector with the presence or absence of bubble, Jin Erti
Rise product quality.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the liquid crystal voltage-stabilizing controller of the preferred embodiment of the present invention one；
Fig. 2 is that the signal of voltage-stabilization control system of the invention transmits block diagram；
Fig. 3 is the structural schematic diagram of the liquid crystal voltage-stabilizing controller of the preferred embodiment of the present invention two；
Fig. 4 is the structural schematic diagram of the liquid crystal voltage-stabilizing controller of the preferred embodiment of the present invention three.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention is directed to existing Liquid crystal bottle, due to after the negative one that liquid crystal coating uses is set fixed value, whole
In a coating process, negative pressure value will not change with the variation of amount of liquid crystal, to will appear the liquid crystal in negative pressure and liquid crystal water dropper
Unmatched situation is measured, influences the stability of liquid crystal discharge-amount, and then influence the quality problems of product, the present embodiment is able to solve
The defect.
Preferred embodiment one
As shown in Figure 1, the present invention provides a kind of liquid crystal voltage-stabilizing controller 10, comprising: liquid crystal supply case 11；Liquid crystal water dropper
12；Voltage-stabilization control system 13；Bubble detector.
Wherein, the voltage-stabilization control system 13 includes: pressure measurement cell 131；Adjuster 132；Control valve 133.
The signal output end of the signal input part of the adjuster 132 and the pressure measurement cell 131 is electrically connected, institute
The signal input part of the signal output end and the control valve 133 of stating adjuster 132 is electrically connected.
The bubble detector includes transmitter and 141 and receiver 142, and the bubble detector in the present embodiment is
Ultrasonic detector, the ultrasonic detector include ultrasonic transmitter 141 and ultrasonic receiver 142, the bubble detector
It may be infrared light detection instrument.
The liquid crystal water dropper 12 is set to the underface of the liquid crystal supply case 11, the liquid crystal water dropper 12 by conduit with
The liquid crystal supply case 11 connects, and it can also be other shapes that the sectional view of the liquid crystal water dropper 12, which can be generally rectangle,.
In coating of liquid crystalline, liquid crystal is flow in the liquid crystal water dropper 12 out of described liquid crystal supply case 11 via conduit, institute
Stating may be provided with multiple drip hole for coating of liquid crystalline on liquid crystal water dropper 12, the specific structure of the liquid crystal water dropper 12 can refer to existing
Some structure designs, which is not described herein again.
In the present embodiment, the control valve 133 is set to the top of the liquid crystal supply case 11；The pressure measurement list
Member 131 is set in the liquid crystal supply case 11.
Specifically, the pressure measurement cell 131 includes pressure sensor and pressure transmitter, is set to the liquid crystal and supplies
The bottom of case 11 is answered, the bottom of the liquid crystal supply case 11 has certain thickness, also, the bottom of the liquid crystal supply case 11
With a groove, the measuring unit can be accommodated, the pressure measurement cell 131 is embedded in the groove, the pressure
The upper surface of measuring unit 131 is concordant with the bottom interior surface 111 of the liquid crystal supply case.
The liquid crystal supply case 11, the pressure measurement cell 131, the adjuster 132, the control valve 133 and
The conducting wire for connecting all parts constitutes a feedback loop.
Real-time pressure value of the pressure measurement cell 131 to sense the liquid crystal in the liquid crystal supply case 131, passes through
The software systems of setting calculate current amount of liquid crystal, and data are passed through the feedback loop real-time Transmission to adjuster 132.
The adjuster 132 is draft regulator, and the draft regulator is received from the pressure measurement cell 131
Measuring signal is compared according to the relationship of current liquid crystal amount and negative pressure with setting value, is mended in real time to current negative pressure
Just, feedback control signal is issued.
The control valve 133 is negative pressure control valve, and the negative pressure control valve receives the control that the draft regulator issues
Signal automatically adjusts valve aperture, changes negative pressure value, adjusts the increment of liquid crystal, so that negative pressure and the liquid crystal supply
Amount of liquid crystal in case 11 is in equilibrium state, so that the amount of liquid crystal in the liquid crystal supply case 11 is in balance liquid level, avoids
Due to amount of liquid crystal deficiency, cause the liquid crystal discharge-amount of the liquid crystal water dropper 12 of lower section unstable.
When the amount of liquid crystal in the liquid crystal supply case 11 changes, the negative pressure in the liquid crystal supply case 11 is also therewith
It changes, therefore the adjuster 132 can control the liquid supplied into liquid crystal supply case 11 by the size of control negative pressure
Crystalline substance amount size.
The adjuster 132 can also be liquid crystal adjuster, control amount of liquid crystal, mended in real time to current amount of liquid crystal
Just, corresponding, the control valve 133 can also be LCD Controlling valve, and liquid crystal flow is controlled by controlling opening of valve.
As shown in Fig. 2, the voltage-stabilization control system 13 is negative feed back control system, the specific work of voltage-stabilization control system
Make process are as follows: when negative pressure or amount of liquid crystal deviate equilibrium state, when initial steady state value changes, the pressure measurement cell 131
The actual value of the amount of liquid crystal sensed is transmitted to the adjuster 132, inside the adjuster 132, by given value and reality
Actual value is compared, and obtains deviation, and control action methods of the adjuster 132 according to setting export a control signal,
Change the negative pressure value or liquid crystal flow in the liquid crystal supply case 11 by the control valve 133, so that the adjuster 132
Towards the direction change of deviation reduction, the pressure measurement cell 131 senses new measurement to be believed the negative pressure or amount of liquid crystal of control
Number, then the signal is transmitted to the adjuster 132, the repetitive cycling above process, finally make negative pressure or amount of liquid crystal return to
Near definite value or given value, so that system reaches a new equilibrium state, liquid crystal normally drips, if the voltage-stabilization control system
13 can not be adjusted, and equilibrium state is not achieved in negative pressure and amount of liquid crystal, then the stopping of liquid crystal water dropper 12 is dripped, and system is simultaneously reported
It is alert.
The ultrasonic detector is set in the liquid crystal supply case 11, specifically, the ultrasonic transmitter 141 is arranged
In the top of 11 inside of liquid crystal supply case, the ultrasonic receiver 142 is set to the bottom opposite with the top.
The sending of ultrasonic transmitter 141 ultrasonic signal, 142 received ultrasonic signal of ultrasonic receiver, according to
Acoustic signals variation generates to determine whether there is bubble, if it is determined that there is bubble generation, then the stopping of liquid crystal water dropper 12 is dripped, to
Bubble is discharged, is further continued for dripping later.
The installation site of the bubble detector is unlimited, may be mounted at bottom, the top of 11 inside of liquid crystal supply case
Portion or side wall, specific installation site can design according to actual needs；The setting number of the ultrasound measuring instrument is unrestricted
System can be configured according to actual needs there are two the ultrasonic detector settings in the present embodiment.
The installation site of the pressure measurement cell 131 is unrestricted, also mountable in 12 inside of the liquid crystal water dropper
Bottom position；The number of the pressure measurement cell 131 is unrestricted, can be for one or multiple, in the present embodiment
131 numbers of the pressure measurement cell are one.
Preferred embodiment two
As shown in figure 3, the difference is that, the adjuster 132 is liquid crystal adjuster, the control with above-described embodiment one
Valve 133 processed is LCD Controlling valve；The bubble detector is infrared light detection instrument.
When the amount of liquid crystal in the liquid crystal supply case 11 deviates balance liquid level, the pressure measurement cell 131 will be real-time
Amount of liquid crystal data be transmitted to the liquid crystal adjuster, maked corrections in real time by the liquid crystal adjuster to current amount of liquid crystal,
Output control signal, the LCD Controlling valve receive the control signal, automatically adjust valve aperture, change liquid crystal flow, so that
Negative pressure and amount of liquid crystal reach balance again.
The infrared light detection instrument includes infrared transmitter 141 and infrared remote receiver 142, and the infrared transmitter 141 is set
It is placed in the top in the liquid crystal supply case 11, the infrared remote receiver 142 is set to the bottom in the liquid crystal supply case 11,
The infrared transmitter 141 is oppositely arranged with the infrared remote receiver 142.
The infrared transmitter 141 issues infrared ray, and infrared ray passes through the liquid crystal in the liquid crystal supply case, described in arrival
Infrared remote receiver 142, the infrared remote receiver 142 determine whether there is bubble production by the variation of infra-red intensity or incidence angle
It is raw, if it is determined that there is bubble production, then stop dripping and carrying out row's bubble.
The number of the pressure measurement cell 131 in the present embodiment is two, and the number of the infrared light detection instrument is
One, the installation site of the pressure measurement cell 131 and the infrared light detection instrument can refer to above-described embodiment one, herein not
It repeats again.
Preferred embodiment three
As shown in figure 4, the present embodiment and embodiment one are the difference is that the position that the pressure measurement cell 131 is arranged
Set difference.
The measuring unit 131 is set to the bottom of the liquid crystal water dropper 12, the measuring unit 131 and the liquid crystal drop
The inner surface of first 12 bottom is concordant.
The measuring unit 131 calculates the liquid crystal drop to sense the real-time pressure in the liquid crystal water dropper 12
Amount of liquid crystal in first 12, sends data to the adjuster 132, and the adjuster 132 issues control signal, the control valve
133 automatic adjustment valve apertures, the feedback regulation effect reached are the same as example 1.
The utility model has the advantages that the present invention can be put down by setting voltage-stabilization control system between feedback regulation negative pressure and amount of liquid crystal
Weighing apparatus relationship, so that the discharge-amount of liquid crystal is in stable state, and then ensure that product quality during liquid crystal coating；In addition,
The present invention is capable of detecting when in liquid crystal supply case by setting bubble detector with the presence or absence of bubble, and then Improving The Quality of Products.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of liquid crystal voltage-stabilizing controller characterized by comprising
Liquid crystal supply case；
Liquid crystal water dropper is set to the underface of the liquid crystal supply case, is connect by conduit with the liquid crystal supply case；
Voltage-stabilization control system, comprising: pressure measurement cell；Adjuster；Control valve is set on the liquid crystal supply case；It is described
The signal output end of the signal input part of adjuster and the pressure measurement cell is electrically connected, the signal output of the adjuster
End and the signal input part of the control valve are electrically connected；
When the amount of liquid crystal variation in the liquid crystal supply case, pressure signal is transferred to the adjusting by the pressure measurement cell
Device, the adjuster issue feedback adjustment signal, control amount of liquid crystal by the control valve by being compared with setting value
Supply.
2. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the adjuster is draft regulator,
To receive pressure measurement signal and output vacuum cavitations signal.
3. liquid crystal voltage-stabilizing controller according to claim 2, which is characterized in that the control valve is negative pressure control valve,
To adjust negative pressure value.
4. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the adjuster is liquid crystal adjuster,
To receive pressure measurement signal and output amount of liquid crystal control signal.
5. liquid crystal voltage-stabilizing controller according to claim 4, which is characterized in that the control valve is LCD Controlling valve,
To adjust liquid crystal magnitude.
6. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the pressure measurement cell is set to institute
Liquid crystal supply bottom portion is stated, the pressure measurement cell is concordant with the inner surface in liquid crystal supply bottom portion.
7. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the pressure measurement cell is set to institute
The bottom of liquid crystal water dropper is stated, the pressure measurement cell is concordant with the inner surface of liquid crystal water dropper bottom.
8. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the control valve is set to the liquid crystal
The top of cassette for supplying.
9. liquid crystal voltage-stabilizing controller according to claim 1, which is characterized in that the liquid crystal voltage-stabilizing controller also wraps
Include the bubble detector being set in the liquid crystal supply case.
10. liquid crystal voltage-stabilizing controller according to claim 9, which is characterized in that the bubble detector is ultrasonic wave
One of detector, infrared light detection instrument or other optical instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899121.2A CN109031716A (en) | 2018-08-08 | 2018-08-08 | Liquid crystal voltage-stabilizing controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899121.2A CN109031716A (en) | 2018-08-08 | 2018-08-08 | Liquid crystal voltage-stabilizing controller |
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| Publication Number | Publication Date |
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| CN109031716A true CN109031716A (en) | 2018-12-18 |
Family
ID=64632399
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810899121.2A Pending CN109031716A (en) | 2018-08-08 | 2018-08-08 | Liquid crystal voltage-stabilizing controller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142616A (en) * | 1996-11-14 | 1998-05-29 | Ayumi Kogyo Kk | Liquid crystal injection method and liquid dispenser |
| KR100696938B1 (en) * | 2006-06-28 | 2007-03-20 | 주식회사 탑 엔지니어링 | Liquid crystal dispensing apparatus |
| CN101135814A (en) * | 2006-10-27 | 2008-03-05 | 塔工程有限公司 | Dispensing apparatus |
| CN101498868A (en) * | 2008-01-28 | 2009-08-05 | 塔工程有限公司 | Liquid crystal coating apparatus |
| CN102819150A (en) * | 2012-08-06 | 2012-12-12 | 深圳市华星光电技术有限公司 | Liquid crystal injection device and liquid crystal container |
-
2018
- 2018-08-08 CN CN201810899121.2A patent/CN109031716A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142616A (en) * | 1996-11-14 | 1998-05-29 | Ayumi Kogyo Kk | Liquid crystal injection method and liquid dispenser |
| KR100696938B1 (en) * | 2006-06-28 | 2007-03-20 | 주식회사 탑 엔지니어링 | Liquid crystal dispensing apparatus |
| CN101135814A (en) * | 2006-10-27 | 2008-03-05 | 塔工程有限公司 | Dispensing apparatus |
| CN101498868A (en) * | 2008-01-28 | 2009-08-05 | 塔工程有限公司 | Liquid crystal coating apparatus |
| CN102819150A (en) * | 2012-08-06 | 2012-12-12 | 深圳市华星光电技术有限公司 | Liquid crystal injection device and liquid crystal container |
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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: 20181218 |