CN106933412A - The manufacturing process of touch-screen - Google Patents
The manufacturing process of touch-screen Download PDFInfo
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- CN106933412A CN106933412A CN201710098054.XA CN201710098054A CN106933412A CN 106933412 A CN106933412 A CN 106933412A CN 201710098054 A CN201710098054 A CN 201710098054A CN 106933412 A CN106933412 A CN 106933412A
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- electrode
- thin film
- ito thin
- touch
- conductive
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000010409 thin film Substances 0.000 claims abstract description 58
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005530 etching Methods 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 33
- 239000010408 film Substances 0.000 claims description 25
- 239000004568 cement Substances 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses the manufacturing process of touch-screen, it is included on ito thin film and etches conductive electrode, insulating barrier, printed conductive layer and glass cover-plate of being fitted on ito thin film on ito thin film are printed on ito thin film；Conductive electrode includes a plurality of X electrode and a plurality of Y electrode of mutually insulated, and X electrode keeps continuous, and Y electrode disconnects in the region intersected with X electrode；Insulating barrier includes multiple insulative bridges at the areas of disconnection of Y electrode；Conductive layer includes a plurality of wire jumper and a plurality of lead-out wire, and each wire jumper is located in insulative bridge and turns on the Y electrode of corresponding areas of disconnection both sides, and each lead-out wire is located at the frame region of ito thin film；It is easy to process, materials are saved, operation is few, be conducive to improve production efficiency, improve yields and reduces cost, the circuit formed by etching, printing, the stability with precision and structure higher is realized lightening on the premise of the good visual performance and job stability of touch-screen is ensured.
Description
Technical field
The invention belongs to touch-screen field, and in particular to the manufacturing process of touch-screen.
Background technology
Capacitance touch screen is operated using the induced-current of human body, and certain point on screen is touched when finger
When, the touch-control IC controllers of touch-screen need to obtain the point respectively in X-direction and the current information of Y-direction, accurately to calculate
The position of touch point.Conventional capacitance touch screen, usually using the ITO electrode of double-layer structure, respectively as the electricity of X-direction
Pole and the electrode of Y direction, described two-layer ITO electrode are respectively deposited on two plate substrates, then two plate substrates are used up into glue
Bonding, then upper strata base material optical cement is Nian Jie with glass cover-plate, the ITO electrode of such X-direction and Y direction is respectively each
From layer on work.Due to making touch-screen using two-layer ITO conductive materials, two-layer optical cement, technique is cumbersome, the thickness of touch-screen
Degree is high；Conduction is larger with wire jumper line width, and wire jumper inevitably shows in viewing area, influences touch-screen display effect.
The content of the invention
A technical problem to be solved by this invention is that offer operation is few, can efficiently produce lightening touch-screen
The manufacturing process of touch-screen.
In order to solve the above technical problems, the technical scheme that the manufacturing process of inventive touch screen is used is：
The manufacturing process of touch-screen, including：
Conductive electrode is etched on ito thin film；The conductive electrode include it is a plurality of along X-direction extend X electrode and
The a plurality of Y electrode extended along Y direction, and mutually insulated between the X electrode and the Y electrode, the X electrode is in X-axis side
Keep continuous upwards, the Y electrode disconnects in the region intersected with the X electrode；
Insulating barrier is printed on the ito thin film；The insulating barrier includes multiple insulative bridges, and the insulative bridge correspondence is described
At the areas of disconnection of Y electrode and connect the Y electrode of corresponding areas of disconnection both sides；
The printed conductive layer on the ito thin film；The conductive layer includes a plurality of wire jumper and a plurality of lead-out wire, each jump
Line is located in the insulative bridge and turns on the Y electrode of corresponding areas of disconnection both sides, and it is thin that each lead-out wire is located at the ITO
The frame region of film, a part of lead-out wire is electrically connected with the X electrode, lead-out wire described in another part and the Y electrode
Electrical connection；
In the conductive side laminating glass cover-plate of the ito thin film.
Further, the conductive electrode also includes transition electrode, and the areas of disconnection of each Y electrode is to that should have two
Between the transition electrode, and the transition electrode and the X electrode keep open circuit, the transition electrode and the Y electrode it
Between keep open circuit, each insulative bridge connection is positioned at the transition electrode of corresponding areas of disconnection and positioned at corresponding areas of disconnection one
The Y electrode of side, the transition electrode and the Y electrode at the two ends connection correspondence insulative bridge two ends of the wire jumper.
Further, it is described to be the step of the conductive electrode is etched on ito thin film：
Prepare the ito thin film, the ito thin film includes base material and the ITO layer located at the base material side；
Fitted on the ito thin film dry film, the dry film covers the ITO layer；
Shape according to the conductive electrode is exposed to the dry film, and to exposure after the dry film show
Shadow, the dry film for reacting is protected to the ITO layer；
The ITO layer do not protected by the dry film is etched away using etching solution；
The dry film that stripping reacts.
Further, the step of printing the insulating barrier on the ito thin film includes：
One layer of photosensitive type insulating cement is printed on the ito thin film, and the insulating cement is dried, exposed and shown
Shadow.
Further, the step of printing the conductive layer on the ito thin film includes：
On the ito thin film print one layer of photosensitive type elargol, and the elargol is toasted, it is exposed and developed.
Further, include the step of the conductive side of the ito thin film sets the glass cover-plate：
In the conductive side laminating OCA optical cement layers of the ito thin film, then the glass cover-plate is fitted to described
The OCA optical cement layers side opposite with the ito thin film.
Further, constituting the conductive electrode portion of the Y electrode includes that multiple removes Rhombus diagonal up and down
Pole.
Further, each rhombus electrode one end close with another rhombus electrode has two projections, each institute
The top for stating projection is relative with the corresponding transition electrode.
Further, the transition electrode is in polygon, and the raised top is relative with the polygonal angle.
Further, the line width of the wire jumper is less than 5 μm.
The beneficial effect of manufacturing process of the touch-screen that the present invention is provided is：Need to only be etched on individual layer ito thin film
Conductive electrode, completes touch-screen sense of touch conducting wire, conductive overlap joint line and lead-out wire by republishing insulating barrier and conductive layer
Setting, the current information of touch point can be transferred to IC controllers using lead-out wire connection IC controllers and realize touch-control, subtract
The number of plies of touch-screen is lacked, with good flexural property, it is easy to process, has saved materials, operation is few, be conducive to improving production effect
Rate, raising yields and reduces cost, the circuit formed by etching, printing, the stability with precision and structure higher,
Can be realized on the premise of the good visual performance and job stability of touch-screen is ensured lightening.
Brief description of the drawings
Fig. 1 is the flow chart of the manufacturing process of touch-screen provided in an embodiment of the present invention；
Fig. 2 is the structural representation of touch-screen obtained in manufacturing process by the touch-screen of the embodiment of the present invention；
Fig. 3 is removal OCA optical cement layers in Fig. 2 and the structural representation after glass cover-plate；
Fig. 4 is the enlarged drawing in A portions in Fig. 3；
Fig. 5 is the enlarged drawing in B portions in Fig. 4；
Fig. 6 is the structural representation of the ito thin film in Fig. 5；
Wherein：1-ITO films, 11-X electrodes, 12-Y electrodes, 121- projections, 13- transition electrodes, 2- insulative bridges, 3- are jumped
Line, 4- lead-out wires, 5-OCA optical cement layers, 6- glass cover-plates.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.
As depicted in figs. 1 and 2, the manufacturing process of touch-screen provided in an embodiment of the present invention, is included on ito thin film 1 and loses
Carve conductive electrode, insulating barrier, printed conductive layer, the conductive side in ito thin film 1 on ito thin film 1 are printed on ito thin film 1
Laminating glass cover-plate 6；Wherein, as shown in figure 3, conductive electrode includes a plurality of X electrode 11 and a plurality of along Y extended along X-direction
The Y electrode 12 that direction of principal axis extends, and mutually insulated between X electrode 11 and Y electrode 12, the company of holding in the X-axis direction of X electrode 11
Continuous, Y electrode 12 disconnects in the region intersected with X electrode 11；As shown in figure 5, insulating barrier includes multiple insulative bridges 2, insulative bridge 2 pairs
Answer at the areas of disconnection of Y electrode 12 and connect the Y electrode 12 of corresponding areas of disconnection both sides；As shown in Figure 3 and Figure 5, conductive layer bag
A plurality of wire jumper 3 and a plurality of lead-out wire 4 are included, each wire jumper 3 is located in insulative bridge 2 and turns on the Y electrode 12 of corresponding areas of disconnection both sides,
Each lead-out wire 4 is located at the frame region of ito thin film 1, and a part of lead-out wire 4 is electrically connected with X electrode 11, another part lead-out wire 4
Electrically connected with Y electrode 12.
Only conductive electrode need to be etched on individual layer ito thin film 1, touch-screen is completed by republishing insulating barrier and conductive layer
The setting of sense of touch conducting wire, conductive overlap joint line and lead-out wire 4, can be by touch point using the connection IC of lead-out wire 4 controllers
Current information be transferred to IC controllers and realize touch-control, the number of plies of touch-screen is reduced, with good flexural property, it is easy to plus
Work, saves materials, and operation is few, is conducive to improve production efficiency, improves yields and reduces cost, is formed by etching, printing
Circuit, the stability with precision and structure higher, can ensure touch-screen good visual performance and working stability
Realized on the premise of property lightening.
Further, as seen in figs. 5-6, in embodiments of the present invention, the manufacturing process of touch-screen, conductive electrode also includes
Transition electrode 13, the areas of disconnection of each Y electrode 12 to that should have two transition electrodes 13, and transition electrode 13 and X electrode 11 it
Between keep open circuit, between transition electrode 13 and Y electrode 12 keep open circuit, each insulative bridge 2 connection positioned at corresponding areas of disconnection mistake
Cross electrode 13 and the Y electrode 12 positioned at corresponding areas of disconnection side, the transition at two ends connection correspondence insulative bridge 2 two ends of wire jumper 3
Electrode 13 and Y electrode 12.The single areas of disconnection of Y electrode 12 is corresponded to, there is provided two transition electrodes, 13, four insulative bridges 2
The conducting of the Y electrode 12 of areas of disconnection both sides is completed with four wire jumpers 3, simple structure neither influences the conveyance capacity of circuit,
Be conducive to the size reduction of wire jumper 3 to the sightless size of naked eyes again, to avoid wire jumper 3 from disturbing display, it is ensured that good is aobvious
Show effect.Certainly also multiple transition electrodes 13 can be set in the areas of disconnection of each Y electrode 12, such as passes through three Hes of transition electrode 13
Six wire jumpers 3 complete the conducting of the Y electrode 12 of areas of disconnection both sides.X electrode 11, Y electrode 12 and transition electrode 13 are in erosion
Carve what step was synchronously obtained, each tiny insulative bridge 2 between transition electrode 13 and Y electrode 12 can be in printing insulating barrier
Synchronously obtained in step, lead-out wire 4 be located at the tiny wire jumper 3 in tiny insulative bridge 2 can the step of printed conductive layer in it is same
Step is obtained, process is simple, it is easy to control size, positional precision, obtains the touch-screen with good visual performance.
Further, as shown in figure 1, in embodiments of the present invention, the step of etch conductive electrode on ito thin film 1
For：
Prepare ito thin film 1, ito thin film 1 includes base material and the ITO layer located at base material side；
Fitted on ito thin film 1 dry film, dry film covering ITO layer；
Shape according to conductive electrode is exposed to dry film, and the dry film after exposure is developed, and is reacted
Dry film is protected to ITO layer；
The ITO layer do not protected by dry film is etched away using etching solution；
The dry film that stripping reacts.
Using the image transfer function of dry film, synchronously completed on ito thin film 1 including X electrode 11, Y electrode 12 and transition
The conductive electrode etching of electrode 13 (if any setting), process is simple, it is ensured that the precision of conductive electrode improves yields.Ito thin film
1 includes base material and the ITO layer on base material, conductive electrode can be formed by way of etching ITO layer, with good clear
Property, it is ensured that good display effect.Specifically, base material can be PET (i.e. polyethylene terephthalate) film, wider
Within the temperature range of have excellent physical and mechanical properties, long-term use temperature is up to 120 DEG C, and electrical insulating property is excellent, creep resistant
Property, fatigue durability, rub resistance and dimensional stability are all fine, are suitable as the base material of touch screen structure, can guarantee that touch-screen
The stabilization of service behaviour.
Further, as shown in figure 1, in embodiments of the present invention, including the step of printing insulating barrier on ito thin film 1：
On ito thin film 1 print one layer of photosensitive type insulating cement, and insulating cement is dried, it is exposed and developed.
The synchronous of each insulative bridge 2 is completed using the sensitization function of photosensitive type insulating cement to set, process is simple, it is ensured that insulative bridge
2 orientation, dimensional accuracy, improves yields.
Further, as shown in figure 1, in embodiments of the present invention, including the step of printed conductive layer on ito thin film 1：
On ito thin film 1 print one layer of photosensitive type elargol, and elargol is toasted, it is exposed and developed.
The synchronization for completing lead-out wire 4 and the tiny wire jumper 3 in tiny insulative bridge 2 using the sensitization function of elargol sets
Put, process is simple, it is ensured that the wire jumper 3 of lead-out wire 4 and orientation, the dimensional accuracy of wire jumper 3 of insulative bridge 2, improve yields.And silver
Glue had not only had good electric conductivity but also had had linear resolution very high, was conducive to reducing the line-spacing of the line width of wire jumper 3 and lead-out wire 4,
With more preferable display effect.
Further, as shown in figure 1, in embodiments of the present invention, fitted glass cover-plate 6 in the conductive side of ito thin film 1
Step includes：In the conductive side laminating OCA optical cement layers 5 of ito thin film 1, then by glass cover-plate 6 fit to OCA optical cement layers 5 with
The opposite side of ito thin film 1.Process is simple, it is only necessary to which one layer of OCA optical cement layer 5 bonds ito thin film 1 with glass cover-plate 6, i.e.,
Can obtain touch-screen, it is ensured that touch-screen has good flexural property.
Further, as shown in fig. 6, in embodiments of the present invention, the conductive electrode portion for constituting Y electrode 12 includes multiple
Remove rhombus electrode diagonal up and down.The areas of disconnection for being Y electrode 12 diagonal up and down removed.Y electrode 12 selects rhombus
Electrode, is conducive to improving sense of touch sensitivity.Similarly, selection X electrode 11 includes that multiple rhombus electrodes that are connected with each other are also beneficial to carry
Sense of touch sensitivity high.Certainly, X electrode 11 and Y electrode 12 also may be selected other electrodes, such as square-shaped electrode.X electrode 11 and Y electrode
12 viewing area selection rhombus electrode, facilitates the setting of transition electrode 13, increases inductance capacitance, improves sense of touch sensitivity.
Further, as shown in fig. 6, in embodiments of the present invention, each rhombus electrode it is close with another rhombus electrode one
End is provided with two projections 121, and each raised 121 top is relative with corresponding transition electrode 13.Be conducive to increasing inductance capacitance, carry
Sense of touch sensitivity high.It is preferred that raised 121 is triangular structure, it is more favorable for improving sense of touch sensitivity.
Further, as shown in fig. 6, in embodiments of the present invention, transition electrode 13 is in polygon, increase is conducive to sense
Electric capacity, improves sense of touch sensitivity.It is preferred that top of the polygonal angle with raised 121 is relative, insulative bridge 2 is reduced to transition electricity
Pole 13 and the covering of Y electrode 12, are conducive to further increasing inductance capacitance, improve sense of touch sensitivity.Specifically, projection 121 can
Remove rhombus electrode it is diagonal up and down when formed.
Further, in embodiments of the present invention, the line width of wire jumper 3 is less than 5 μm, be ensure that less than 5 μm using tactile
Be invisible to the naked eye wire jumper 3 when touching screen, is prevented effectively from the interference display of wire jumper 3, with good display effect, transition electricity is provided with addition
Pole 13, the reduction of line width does not interfere with conveyance capacity, can ensure sense of touch sensitivity.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. the manufacturing process of touch-screen, it is characterised in that including：
Conductive electrode is etched on ito thin film；The conductive electrode includes a plurality of X electrode and a plurality of extended along X-direction
Along the Y electrode that Y direction extends, and mutually insulated between the X electrode and the Y electrode, the X electrode is in the X-axis direction
Keep continuous, the Y electrode disconnects in the region intersected with the X electrode；
Insulating barrier is printed on the ito thin film；The insulating barrier includes multiple insulative bridges, the insulative bridge correspondence Y electricity
At the areas of disconnection of pole and connect the Y electrode of corresponding areas of disconnection both sides；
The printed conductive layer on the ito thin film；The conductive layer includes a plurality of wire jumper and a plurality of lead-out wire, each wire jumper position
In in the insulative bridge and the Y electrode of corresponding areas of disconnection both sides is turned on, each lead-out wire is located at the ito thin film
Frame region, a part of lead-out wire is electrically connected with the X electrode, and lead-out wire described in another part is electrically connected with the Y electrode
Connect；
In the conductive side laminating glass cover-plate of the ito thin film.
2. the manufacturing process of touch-screen according to claim 1, it is characterised in that the conductive electrode also includes transition electricity
Pole, the areas of disconnection of each Y electrode to that should have two transition electrodes, and the transition electrode and the X electrode it
Between keep open circuit, keep open circuit between the transition electrode and the Y electrode, each insulative bridge connection is located at and corresponding disconnects area
The transition electrode in domain and the Y electrode positioned at corresponding areas of disconnection side, the two ends connection correspondence of the wire jumper are described
The transition electrode and the Y electrode at insulative bridge two ends.
3. the manufacturing process of touch-screen according to claim 1 and 2, it is characterised in that described to be etched on ito thin film
The step of conductive electrode is：
Prepare the ito thin film, the ito thin film includes base material and the ITO layer located at the base material side；
Fitted on the ito thin film dry film, the dry film covers the ITO layer；
Shape according to the conductive electrode is exposed to the dry film, and to exposure after the dry film develop, send out
The dry film of raw reaction is protected to the ITO layer；
The ITO layer do not protected by the dry film is etched away using etching solution；
The dry film that stripping reacts.
4. the manufacturing process of touch-screen according to claim 1 and 2, it is characterised in that institute is printed on the ito thin film
The step of stating insulating barrier includes：
On the ito thin film print one layer of photosensitive type insulating cement, and the insulating cement is dried, it is exposed and developed.
5. the manufacturing process of touch-screen according to claim 1 and 2, it is characterised in that institute is printed on the ito thin film
The step of stating conductive layer includes：
On the ito thin film print one layer of photosensitive type elargol, and the elargol is toasted, it is exposed and developed.
6. the manufacturing process of touch-screen according to claim 1 and 2, it is characterised in that in the conductive side of the ito thin film
The step of setting the glass cover-plate includes：
In the conductive side laminating OCA optical cement layers of the ito thin film, then the glass cover-plate is fitted into the OCA light
Learn the glue-line side opposite with the ito thin film.
7. the manufacturing process of touch-screen according to claim 2, it is characterised in that constitute the conduction of the Y electrode
Electrode portion point includes that multiple removes rhombus electrode diagonal up and down.
8. the manufacturing process of touch-screen according to claim 7, it is characterised in that each rhombus electrode is described with another
The close one end of rhombus electrode has two projections, and each raised top is relative with the corresponding transition electrode.
9. the manufacturing process of touch-screen according to claim 8, it is characterised in that the transition electrode is in polygon, and
The raised top is relative with the polygonal angle.
10. the manufacturing process of touch-screen according to claim 2, it is characterised in that the line width of the wire jumper is less than 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098054.XA CN106933412B (en) | 2017-02-23 | 2017-02-23 | Manufacturing process of touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098054.XA CN106933412B (en) | 2017-02-23 | 2017-02-23 | Manufacturing process of touch screen |
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| Publication Number | Publication Date |
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| CN106933412A true CN106933412A (en) | 2017-07-07 |
| CN106933412B CN106933412B (en) | 2021-03-12 |
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| CN201710098054.XA Active CN106933412B (en) | 2017-02-23 | 2017-02-23 | Manufacturing process of touch screen |
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Cited By (1)
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| CN107678587A (en) * | 2017-09-27 | 2018-02-09 | 深圳市骏达光电股份有限公司 | Touch sensitive layer and preparation method thereof |
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| CN106933412B (en) | 2021-03-12 |
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Effective date of registration: 20240329 Address after: 221000, 1st Floor, Da Health Industrial Park, Xiyi High tech Industrial Development Zone, Xinyi City, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Junda Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 518000 4-6 / F, building 4, yingrenshi Guanghui Electrical Industrial Park, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN JUNDA OPTOELECTRONICS Co.,Ltd. Country or region before: China |