CN106163077B - The cabling distribution method and cabling layout stracture in flexible print circuit board bending region - Google Patents
The cabling distribution method and cabling layout stracture in flexible print circuit board bending region Download PDFInfo
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- CN106163077B CN106163077B CN201510145598.8A CN201510145598A CN106163077B CN 106163077 B CN106163077 B CN 106163077B CN 201510145598 A CN201510145598 A CN 201510145598A CN 106163077 B CN106163077 B CN 106163077B
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Abstract
The invention discloses the cabling distribution method and cabling layout stracture in a kind of flexible print circuit board bending region, cabling distribution method includes：Flexible print circuit board substrate is provided, and in defining bending region on the flexible print circuit board substrate, the bending region has one to lay width threshold value；In laying cabling on the substrate；Judge whether the width of the cabling is greater than the laying width threshold value, and width is greater than the more branch lines that are partially separated into of the cabling for laying width threshold value in the bending region and is laid.The laying width threshold value that the present invention passes through the setting cabling in the bending region of flexible print circuit board substrate, to limit the laying width of the cabling in bending region, avoid as bending region interior cabling laying width it is larger and caused by bend more difficult problem, so that improved flexible print circuit board is convenient for bending, simplify operation, improves the production efficiency of flexible print circuit board.
Description
Technical field
The present invention relates to flexible print circuit board technology more particularly to a kind of flexible print circuit boards for needing bending to use
Bend the cabling distribution method and cabling layout stracture in region.
Background technique
Flexible print circuit board (FPC, Flexible Printed Circuit) be it is a kind of using polyimides (PI) or
Polyester film is the flexible wiring board of substrate.FPC and common printed wiring board (PCB, Printed Circuit
Board it) compares, with Distribution density is high, light-weight, thickness is thin, bending is good, assembles and can bear more convenient for solid after folding
Secondary dynamic have mercy on Qu Yundong the features such as.Due to the advantage of FPC itself, the nearly more than ten years disappear in mobile phone, laptop, PAD etc.
It is widely used in expense electronic product.FPC generally links together with PCB and realizes electric function.
Currently, in the mobile phone, it is most of to use flexible print circuit board as electrical connection medium, such as：Almost
It between all LCM single screen mould groups and mobile phone mainboard (mainboard is pcb board) is connect by FPC；LCM single screen and mould
It between the PCB of group is connected by FPC.Cabling is had on FPC, which is used in pair connected by FPC
Electrical connection is established between side to realize electric function.FPC and PCB welding after, FPC be usually all it is sweeping, FPC's
Bending region will generate stress.
Due to the limitation of installation space, the bending region of FPC is very short, if bending region design it is unreasonable, stress compared with
Greatly, it is easy rebound, the PCB of mould group is jacked up, influences the compactedness of LCM structure, and be not easy to operate, in some instances it may even be possible to will lead to
Due to bending region out-of-flatness, and cause assembling difficult, influences using function and yield is made.
As shown in fig.1, having the biggish power supply line 22 of width and the lesser letter of width simultaneously in the bending region 21 of FPC
Number line 23 passes through, and since the cupric of the biggish circuit pack of width is wide, so the hardness of 22 part of power supply line is larger, bending is relatively tired
It is difficult；And the cupric of the lesser circuit pack of width is thin, so 23 part of signal wire is relatively soft, bending is easier to, so not only not
Convenient for the bending of FPC, the overall wire bend folding out-of-flatness in bending region 21 is also resulted in, the assembling of FPC is influenced.
Therefore, thicker power supply line should be separated as far as possible, while keeps effective conductive area of power supply line not
Become.Make the bending for entirely bending region interior lines road relatively flat in this way, in the region that needs are bent, conducting wire is walked according to original
Line is by bending region.
Summary of the invention
It is smooth convenient for bending and bending region that technical problem to be solved by the invention is to provide one kind, convenient for assembling, mentions
The cabling distribution method and cabling layout stracture in the flexible print circuit board bending region of high yield quality.
In order to realize the above technical effect, the invention discloses a kind of cabling laying sides in flexible print circuit board bending region
Method, including：
Flexible print circuit board substrate is provided, and bends region, institute in defining on the flexible print circuit board substrate
Stating bending region has one to lay width threshold value；
In laying cabling on the substrate；
Judge whether the width of the cabling is greater than the laying width threshold value, and width is greater than the laying width threshold
The more branch lines that are partially separated into of the cabling of value in the bending region are laid.
The cabling distribution method in flexible print circuit board bending region, which further improves, to be, including：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > c > b；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into R root branch line of the power supply line in the bending region is laid, wherein it is upward that R is equal to a/c
It is rounded obtained integer；
The signal wire is laid into width on the flexible print circuit board substrate as b laying.
The cabling distribution method in flexible print circuit board bending region, which further improves, to be, including：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > c, b=c；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into Q root branch line of the power supply line in the bending region is laid, wherein it is upward that Q is equal to a/b
It is rounded obtained integer；
The signal wire is laid into width on the flexible print circuit board substrate as b laying.
The cabling distribution method in flexible print circuit board bending region, which further improves, to be, including：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > b > c；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into X root first branch line of the power supply line in the bending region is laid, wherein X is equal to a/c
The integer to round up；
By the signal wire in the overseas part in the bent area to lay width as b laying；
Be partially separated into Y root second branch line of the signal wire in the bending region is laid, wherein Y is equal to b/c
The integer to round up.
The invention also discloses a kind of cabling layout stractures in flexible print circuit board bending region, including flexible printing line
Road plate substrate and the cabling being laid on the flexible print circuit board substrate, defining on the flexible print circuit board substrate has
Region is bent, the bending region has one to lay width threshold value, and width is greater than the cabling for laying width threshold value described
More branch lines are partially separated into bending region.
The cabling layout stracture in flexible print circuit board bending region, which further improves, to be,
The cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > c > b；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into R root branch line in the bending region, wherein R is equal to a/c and rounds up
The integer arrived；
Laying width of the signal wire on the flexible print circuit board substrate is b.
The cabling layout stracture in flexible print circuit board bending region, which further improves, to be,
The cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > c, b=c；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into Q root branch line in the bending region, wherein Q is equal to a/b and rounds up
The integer arrived；
Laying width of the signal wire on the flexible print circuit board substrate is b.
The cabling layout stracture in flexible print circuit board bending region, which further improves, to be,
The cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > b > c；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into the first branch line of X root in the bending region, wherein X is equal to a/c and takes upwards
Whole obtained integer；
Laying width of the signal wire in the overseas part in the bent area is b；
The signal wire is partially separated into the second branch line of Y root in the bending region, and wherein Y is equal to b/c and takes upwards
Whole obtained integer.
The cabling layout stracture in flexible print circuit board bending region, which further improves, to be, the power supply line with
The signal wire is copper wire.
The present invention makes it have following beneficial effect due to using above technical scheme：
By setting the laying width threshold value of cabling in the bending region of flexible print circuit board substrate, and utilizing will be wide
Biggish cabling is spent using the method for being separated into more branch lines, and keep bending region interior cabling lays width no more than setting
The laying width threshold value of cabling, thus avoid as bending region interior cabling laying width it is larger and caused by bend it is more difficult
The problem of, convenient for bending, simplifies processing procedure, improve the producing efficiency of flexible print circuit board.
When the biggish power supply line of width and the lesser signal wire of width are laid on flexible print circuit board substrate simultaneously,
According to the width size of bending region interior power line and signal wire, the biggish power supply line of width is separated into bending region more
The root width power supply line branch line similar with signal wire, thus guarantee the equivalent width of the cabling in bending region, i.e., it is curved
Copper wire in the domain of folding area is evenly distributed, so that the pliability in bending region is consistent, convenient for bending, and improves the bending of bending region
Flatness afterwards becomes easier to the assembling of flexible print circuit board, reduces because after flexible print circuit board bending
Flatness problem and bring packing problem, improve the quality of product, reduce economic loss.
Detailed description of the invention
Fig. 1 is the schematic diagram of the cabling layout stracture in the bending region of existing flexible print circuit board.
Fig. 2 is the flow chart of the cabling distribution method in flexible print circuit board bending of the present invention region.
Fig. 3 is the schematic diagram of the cabling layout stracture in flexible print circuit board bending of the present invention region.
Fig. 4 is the signal of the cabling layout stracture in the flexible print circuit board bending region of a better embodiment of the invention
Figure.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Flexible print circuit board (Flexible Printed Circuit, abbreviation FPC) is used as a kind of flexible route
Plate has Distribution density is high, light-weight, thickness is thin, bending is good, assemble convenient for solid after folding and can bear repeatedly dynamic to have mercy on
It is the features such as Qu Yundong, wide in the consumer electronics products such as mobile phone, laptop, PAD as electrical connection medium
It applies generally.
There is bending region, and after welding, which can bend to bending, be bent on the substrate of FPC
Cheng Zhonghui generates stress, and the flatness after the bending difficulty in the bending region and brake forming influences whether the group of FPC substrate
Dress difficulty and assembling after use function and yield is made.
If the laying of bending region interior cabling is coarse and fine, then the stress that thicker cabling generates when bending can be larger,
Bending is more difficult, and the stress generated when the bending of thinner cabling can be smaller, and bending is easier to, and will lead to bent area domain in this way
The bending complexity of interior cabling is different, the bending region out-of-flatness after leading to bending afterwards, to cause FPC substrate mounting
Inconvenience causes the use function of FPC and that yield is made is bad.
Therefore, in order to ensure use the function after the smooth assembling and assembling of FPC and yield is made, reduction economic loss,
The width that cabling is controlled in FPC wiring, the flatness after ensuring to bend region bending afterwards.For this purpose, the present invention proposes
A kind of wiring method in new flexible print circuit board bending region, as shown in fig.2, the flexible print circuit board bent area
The cabling distribution method in domain mainly includes：
S001：Flexible print circuit board substrate is provided, and in defining bent area on the flexible print circuit board substrate
Domain, the bending region have one to lay width threshold value；
S002：In laying cabling on the substrate；
S003：Judge whether the width of the cabling is greater than the laying width threshold value, and width is greater than the laying
The more branch lines that are partially separated into of the cabling of width threshold value in the bending region are laid.
By setting the laying width threshold value of cabling in the bending region of flexible print circuit board substrate, and utilizing will be wide
Biggish cabling is spent using the method for being separated into more branch lines, and keep bending region interior cabling lays width no more than setting
The laying width threshold value of cabling, thus avoid as bending region interior cabling laying width it is larger and caused by bend it is more difficult
The problem of, and the width of conducting wire of the guarantee in bending region is more consistent, i.e., the copper wire in bending region is evenly distributed, so that
The pliability bent in region is consistent, convenient for bending, and improves the flatness after the bending of bending region.
Three embodiment works are provided below according to the cabling distribution method that above-mentioned flexible print circuit board bends region to have
Body explanation.
Embodiment 1：
As shown in fig.3, firstly, a flexible print circuit board substrate 11 is provided, and in the flexible print circuit board substrate
Bending region 14 is defined on 11, which has one of the laying width for limiting the cabling in bending region 14
Lay width threshold value；
Then, laying cabling is opened up on flexible print circuit board substrate 11, in the present embodiment 1, cabling includes power supply
Line 12 and signal wire 13, wherein
The width of power supply line 12 is a；
The width of signal wire 13 is b；
The laying width threshold value in definition bending region 14 is c (c is the upper limit for laying width threshold value), wherein a > c > b；
Then, the part by power supply line 12 outside bending region 14 is laid in flexible printed wiring to lay width as a
The two sides of plate substrate 11；
When power supply line 12 enters in bending region 14, judge whether the width a of power supply line 12 is greater than bending region 14
Width threshold value c is laid, due to a > c, power supply line 12 is partially separated into R root branch line 121 in bending region 14, then
It is laid using the R root branch line 121 after separation, wherein R is equal to the integer that a/c rounds up；
By signal wire 13 bending region 14 outside part with lay width be b and be laid in two sides power supply line 12 it
Between, and due to b < c, so, part of the signal wire 13 in bending region 14 is also laid with laying width as b, that is,
It says, signal wire 13 is all to lay width as b and lay on entire flexible print circuit board substrate 11；
The cabling for completing the flexible print circuit board bending region of embodiment 1 is laid.
Embodiment 2：
Still as shown in connection with fig. 3, firstly, providing a flexible print circuit board substrate 11, and in the flexible print circuit board
Bending region 14 is defined on substrate 11, which has the laying width for limiting the cabling in bending region 14
One lay width threshold value；
Then, start to lay cabling on flexible print circuit board substrate 11, in the present embodiment 2, cabling includes power supply
Line 12 and signal wire 13, wherein
The width of power supply line 12 is a；
The width of signal wire 13 is b；
The laying width threshold value in definition bending region 14 is c (c is the upper limit for laying width threshold value), wherein a > c, and b
=c；
Then, the part by power supply line 12 outside bending region 14 is laid in flexible printed wiring to lay width as a
The two sides of plate substrate 11；
When power supply line 12 enters in bending region 14, judge whether the width a of power supply line 12 is greater than in bending region 14
Laying width threshold value c, due to a > c, power supply line 12 is partially separated into R root branch line 121 in bending region 14,
It is laid again using the R root branch line 121 after separation, wherein R is equal to the integer that a/c rounds up；
By signal wire 13 bending region 14 outside part with lay width be b and be laid in two sides power supply line 12 it
Between, and due to b=c, so, part of the signal wire 13 in bending region 14 is also laid with laying width as b, that is,
It says, signal wire 13 is all to lay width as b and lay on entire flexible print circuit board substrate 11；
Due to the b=c in the present embodiment 2, so when power supply line 12 enters in bending region 14, by power supply line 12 curved
The R root branch line 121 that is partially separated into folding area domain 14 is laid (wherein, R is equal to the integer that a/c rounds up), that is,
By be partially separated into Q root branch line 121 laying of the power supply line 12 in bending region 14, (wherein, Q is equal to a/b and rounds up to obtain
Integer)；
The cabling for completing the flexible print circuit board bending region of embodiment 2 is laid.
Embodiment 3：
As shown in fig.4, firstly, a flexible print circuit board substrate 11 is provided, and in the flexible print circuit board substrate
Bending region 14 is defined on 11, which has one of the laying width for limiting the cabling in bending region 14
Lay width threshold value；
Then, start to lay cabling on flexible print circuit board 11, in the present embodiment 3, cabling includes power supply line 12
With signal wire 13, wherein
The width of power supply line 12 is a；
The width of signal wire 13 is b；
The laying width threshold value in definition bending region 14 is c (c is the upper limit for laying width threshold value), wherein a > b > c；
Then, the part by power supply line 12 outside bending region 14 is laid with laying width as a；
When power supply line 12 enters in bending region 14, judge to set the laying whether width value a is greater than bending region 14
Width threshold value c, due to a > c, power supply line 12 is partially separated into the first branch line of X root 121 in bending region 14, then
It is laid using the first branch line of X root 121 after separation, wherein X is equal to the integer that a/c rounds up；
Part of the signal wire 13 outside bending region 14 is laid with laying width as b, and due to b > c, so, it will
Signal wire 13 is partially separated into the second branch line of Y root 131 in bending region 14, then using the second branch line of Y root 131 after separation
It is laid, wherein Y is equal to the integer that b/c rounds up；
The cabling for completing to implement 3 flexible print circuit board bending region is laid.
Further, the power supply line 12 in the present invention and signal wire 13 are copper wire.
The cabling distribution method and cabling layout stracture in flexible print circuit board bending region of the invention pass through in flexibility
The laying width threshold value of setting cabling in the bending region 14 of printed wiring board substrate 11, to limit the cabling in bending region 14
Laying width, avoid as bending 14 interior cabling of region laying width it is larger and caused by bend more difficult problem, make
Improved flexible print circuit board is obtained convenient for bending, simplifies operation, improves the production efficiency of flexible print circuit board；
Meanwhile it is big according to the bending 14 interior power line 12 of region and the width of signal wire 13 of flexible print circuit board substrate 11
It is small, the biggish power supply line 12 of width is separated into more width power supply line branch similar with signal wire 13 in bending region 14
Line 121, to guarantee that the width of the cabling in bending region 14 is more consistent, i.e. copper wire distribution in bending region 14 is equal
It is even, so that the pliability in bending region 14 is consistent, convenient for bending, and the flatness after bending region 14 is bent is improved, made curved
The assembling of flexible print circuit board after folding becomes easier to, and reduces because the flatness after flexible print circuit board bending is asked
It inscribes and bring packing problem, improves the quality of product, reduce economic loss.
It is described the invention in detail above in conjunction with accompanying drawings and embodiments, those skilled in the art can basis
Above description makes many variations example to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention,
The present invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (3)
1. a kind of cabling distribution method in flexible print circuit board bending region, which is characterized in that including：
Flexible print circuit board substrate is provided, and bends region in defining on the flexible print circuit board substrate, it is described curved
Folding area domain has one to lay width threshold value；
In laying cabling on the substrate；
Judge whether the width of the cabling is greater than the laying width threshold value, and width is greater than the laying width threshold value
The more branch lines that are partially separated into of cabling in the bending region are laid；
Further, the cabling includes power supply line and signal wire；
The cabling distribution method in flexible print circuit board bending region includes：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > c > b；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into R root branch line of the power supply line in the bending region is laid, wherein R rounds up equal to a/c
Obtained integer；
The signal wire is laid into width on the flexible print circuit board substrate as b laying；
Alternatively, the cabling distribution method in flexible print circuit board bending region includes：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > c, b=c；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into Q root branch line of the power supply line in the bending region is laid, wherein Q rounds up equal to a/b
Obtained integer；
The signal wire is laid into width on the flexible print circuit board substrate as b laying；
Or the cabling distribution method in flexible print circuit board bending region includes：
Power supply line is provided, the width of the power supply line is a；
Signal wire is provided, the width of the signal wire is b；
The laying width threshold value in the bending region is set as c, and a > b > c；
By the power supply line in the overseas part in the bent area to lay width as a laying；
Be partially separated into X root first branch line of the power supply line in the bending region is laid, wherein it is upward that X is equal to a/c
It is rounded obtained integer；
By the signal wire in the overseas part in the bent area to lay width as b laying；
Be partially separated into Y root second branch line of the signal wire in the bending region is laid, wherein it is upward that Y is equal to b/c
It is rounded obtained integer.
2. a kind of cabling layout stracture in flexible print circuit board bending region, it is characterised in that：Including flexible print circuit board
Substrate and the cabling being laid on the flexible print circuit board substrate, definition has bending on the flexible print circuit board substrate
Region, the bending region have one to lay width threshold value, and width is greater than the cabling for laying width threshold value in the bending
More branch lines are partially separated into region；
Further, the cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > c > b；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into R root branch line in the bending region, wherein R is equal to what a/c rounded up
Integer；
Laying width of the signal wire on the flexible print circuit board substrate is b；
Alternatively, the cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > c, b=c；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into Q root branch line in the bending region, wherein Q is equal to what a/b rounded up
Integer；
Laying width of the signal wire on the flexible print circuit board substrate is b；
Or the cabling includes power supply line and signal wire；
The width of the power supply line is a；
The width of the signal wire is b；
The laying width threshold value in the bending region is c, and a > b > c；
Laying width of the power supply line in the overseas part in the bent area is a；
The power supply line is partially separated into the first branch line of X root in the bending region, wherein X is equal to a/c and rounds up
The integer arrived；
Laying width of the signal wire in the overseas part in the bent area is b；
The signal wire is partially separated into the second branch line of Y root in the bending region, wherein Y is equal to b/c and rounds up
The integer arrived.
3. the cabling layout stracture in flexible print circuit board bending as claimed in claim 2 region, it is characterised in that：The electricity
Source line and the signal wire are copper wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145598.8A CN106163077B (en) | 2015-03-31 | 2015-03-31 | The cabling distribution method and cabling layout stracture in flexible print circuit board bending region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145598.8A CN106163077B (en) | 2015-03-31 | 2015-03-31 | The cabling distribution method and cabling layout stracture in flexible print circuit board bending region |
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| CN106163077A CN106163077A (en) | 2016-11-23 |
| CN106163077B true CN106163077B (en) | 2018-11-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473699A (en) * | 2021-07-21 | 2021-10-01 | 北京梦之墨科技有限公司 | Deflection stress balanced FPC module and electronic device |
| CN115815896A (en) * | 2022-12-05 | 2023-03-21 | 平湖科谱激光科技有限公司 | Device for welding transceiver and circuit board assembly |
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| EP0454272A1 (en) * | 1990-04-27 | 1991-10-30 | E.I. Du Pont De Nemours And Company | Flexible circuit and device for holding the flexible circuit in the folded state |
| US5717556A (en) * | 1995-04-26 | 1998-02-10 | Nec Corporation | Printed-wiring board having plural parallel-connected interconnections |
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| CN104011634A (en) * | 2011-12-22 | 2014-08-27 | 富士胶片株式会社 | Conductive sheet and touch panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424983A (en) * | 1990-05-15 | 1992-01-28 | Nitto Denko Corp | Flexible printed board for bending |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454272A1 (en) * | 1990-04-27 | 1991-10-30 | E.I. Du Pont De Nemours And Company | Flexible circuit and device for holding the flexible circuit in the folded state |
| US5717556A (en) * | 1995-04-26 | 1998-02-10 | Nec Corporation | Printed-wiring board having plural parallel-connected interconnections |
| CN2426261Y (en) * | 2000-05-08 | 2001-04-04 | 英业达集团(上海)电子技术有限公司 | Flexible printed circuit board |
| CN104011634A (en) * | 2011-12-22 | 2014-08-27 | 富士胶片株式会社 | Conductive sheet and touch panel |
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Address after: 1568 Jiugong Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 201506 Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201508, building two, building 100, 1, Jinshan Industrial Road, 208, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
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