CN101900894A - Liquid crystal display module and flexible printed circuit board - Google Patents
Liquid crystal display module and flexible printed circuit board Download PDFInfo
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- CN101900894A CN101900894A CN2009101077546A CN200910107754A CN101900894A CN 101900894 A CN101900894 A CN 101900894A CN 2009101077546 A CN2009101077546 A CN 2009101077546A CN 200910107754 A CN200910107754 A CN 200910107754A CN 101900894 A CN101900894 A CN 101900894A
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Abstract
The invention discloses a liquid crystal display module, which comprises a liquid crystal display panel, a backlight unit and a flexible printed circuit board. The backlight unit is arranged opposite to the liquid crystal display panel and provides a light source for the liquid crystal display panel; and the flexible printed circuit board is connected with the liquid crystal display panel. The flexible printed circuit board comprises an interface region part, a first single-layer bending region part, a first double-layer wiring region part, a second single-layer bending region part and a second double-layer wiring region part, which are sequentially connected. The interface region part comprises at least one first terminal which is connected to the liquid crystal display panel; the first double-layer wiring region part comprises at least one double-layer wiring circuit network; and the second double-layer wiring region part comprises at least one second terminal which can be connected to an external device. By optimizing the circuit network, the circuit network is transferred from a component area region to the first double-layer wiring region part. Therefore, the area in the component region is saved, and a circuit which is favorable for improving the electrical performance reliability of the liquid crystal display module is increased in the component region.
Description
[technical field]
The invention belongs to field of liquid crystal display, relate in particular to a kind of liquid crystal display module and flexible print circuit board.
[background technology]
At first defined term related to the present invention here.With reference to Fig. 1, the front and the back side of liquid crystal display module is defined as follows.When the liquid crystal display module was placed, the face of seeing display message was the front of liquid crystal display module, with the front back to face be the back side of liquid crystal display module.
At present, the basic structure of available liquid crystal demonstration module as shown in Figure 1, comprising display panels 11, flexible print circuit board (Flexible Printed Circuit, be called for short FPC) 12 and back light unit 13, flexible print circuit board 12 1 ends are connected with the driving circuit 14 that nation fixes on the display panels 11, be placed on the back side of back light unit 13 after the other end bending, as the interface 15 of liquid crystal display module and other microprocessor.Simultaneously, flexible print circuit board also is the carrier of the peripheral circuit components and parts (such as resistance, electric capacity, diode or the like) of driving circuit 14 in the liquid crystal display module.
Please refer to shown in Fig. 2 A, 2B and 2C, be the basic structure of available liquid crystal demonstration module flexible print circuit board, its top is flexible print circuit board and display panels nation fixed (Film On Glass is called for short FOG) interface area 21; The centre is designed to individual layer bending district 22, purpose is to guarantee that flexible print circuit board has enough pliabilities when being folded into the liquid crystal display module back side, and being connected of protection flexible print circuit board and display panels, make liquid crystal module in use, be not easy to damage this connection; The bottom is two-layer wiring district 23, and the components and parts 24 on the flexible print circuit board are positioned over this zone, also is wiring zone main on the flexible print circuit board simultaneously.
When the liquid crystal display module during system, in most cases all is to adopt grooving on back light unit, form groove 31, as shown in Figure 3 in assembling.To be placed on the back side of back light unit after the flexible print circuit board bending then, and the components and parts on the flexible print circuit board are hidden in the groove of back light unit, as shown in Figure 4.If want to improve the reliability of liquid crystal display module aspect electrical property, often need on flexible print circuit board, increase, objectively will increase the grooving area on the liquid crystal display module back light unit such as other extra components and parts such as filter capacitor, voltage dependent resistor (VDR), current-limiting resistances.But, in this kind package assembly, it is limited being used to hide the groove area of putting components and parts on the flexible print circuit board on the back light unit, if the grooving area on the increase back light unit, can weaken on the one hand the physical strength of whole liquid crystal display module, make the liquid crystal display module occur display panels in the failtests easily and break doing to fall; Increase the grooving area on the other hand, can make the distance of effective viewing area of display panels and grooving backlight reduce, cause the too close effective viewing area of display panels of light supply apparatus in the back light unit, make whole liquid crystal display module occur the preceding hot spot of lamp easily, show that unequal optical effect is bad, will cause the optical effect intractability of back light unit to strengthen.
In addition, owing to be subjected to the restriction of cost and product structure, the area in the two-layer wiring district 23 on the flexible print circuit board is very limited often, and this causes some the important circuit networks on it often can not reach optimal wiring effect.
Therefore, how in limited grooving area backlight, as often as possible hiding the components and parts of putting on the flexible print circuit board, make the liquid crystal display module when improving the electrical property aspect, can take into account its physical strength and optical effect again, is problem demanding prompt solution.
[summary of the invention]
Technical matters to be solved by this invention provides a kind of liquid crystal display module, solution is in existing limited grooving area backlight, as often as possible hide the components and parts of putting on the flexible print circuit board, make the liquid crystal display module when improving the electrical property aspect, can take into account the problem of its physical strength and optical effect again.
The present invention is achieved by the following technical solutions:
A kind of liquid crystal display module comprises:
Display panels;
With the back light unit that described display panels is oppositely arranged, back light unit transports light in the described display panels;
Flexible print circuit board comprises:
The interface area part comprises that at least one the first terminal is connected to display panels;
First individual layer bending district part, described first individual layer bending district part is connected to described interface area part;
The first two-layer wiring district part, the described first two-layer wiring district part are connected to described first individual layer bending district part, and the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring;
Second individual layer bending district part, described second individual layer bending district part is connected to the described first two-layer wiring district part, when the liquid crystal display module is assembled, after partly bending along described second individual layer bending district, described interface flexible print circuit board is placed on the back of described back light unit;
The second two-layer wiring district part, an end of the described second two-layer wiring district part are connected to described second individual layer bending district part, and the described second two-layer wiring district part comprises that at least one can be connected to second terminal of external device (ED).
In the liquid crystal display module of the present invention, by in the individual layer bending district of existing flexible print circuit board, increasing by the first two-layer wiring district part, the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring, by circuit network is optimized adjustment, make circuit network in components and parts area district, transfer to the described first two-layer wiring district part, thereby saved the area in the components and parts district, its area can as often as possible be hidden the components and parts of putting on the flexible print circuit board, therefore can in the components and parts district, increase the circuit that helps improving liquid crystal display module electrical property reliability, make the liquid crystal display module when improving the electrical property aspect, taken into account its physical strength and optical effect again.
The present invention also provides a kind of flexible print circuit board, comprising:
Interface area part, described interface area comprise that partly at least one can be connected to the first terminal of external device (ED);
First individual layer bending district part, described first individual layer bending district part is connected to described interface area part;
The first two-layer wiring district part, the described first two-layer wiring district part are connected to described first individual layer bending district part, and the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring;
Second individual layer bending district part, described second individual layer bending district part is connected to the described first two-layer wiring district part;
The second two-layer wiring district part, the described second two-layer wiring district part are connected to described second individual layer bending district part, and the described second two-layer wiring district part comprises that at least one can be connected to second terminal of external device (ED).
Flexible print circuit board of the present invention increases by the first two-layer wiring district part, the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring, by circuit network is optimized adjustment, make circuit network in components and parts area district, transfer to the described first two-layer wiring district part, thereby saved the area in the components and parts district, its area can as often as possible be hidden the components and parts of putting on the flexible print circuit board, has improved the electrical property of flexible print circuit board.
Feature of the present invention and advantage will be elaborated by embodiment and accompanying drawing.
[description of drawings]
Fig. 1 is the basic structure synoptic diagram that available liquid crystal shows module.
Fig. 2 A is the front view that available liquid crystal shows the module flexible print circuit board.
Fig. 2 B is the side view cutaway drawing of D-D direction module flexible print circuit board among Fig. 2 A.
Fig. 2 C is the rear view that available liquid crystal shows the module flexible print circuit board.
Fig. 3 is the synoptic diagram that available liquid crystal shows grooving on the module group backlight unit.
Fig. 4 is the structural representation that existing flexible print circuit board is folded into the liquid crystal display module back side.
Fig. 5 is an existing flexible print circuit board individual layer bending district synoptic diagram in actual use.
Fig. 6 is the liquid crystal display module structural representation that provides in the embodiment of the invention.
Fig. 7 A is the flexible print circuit board front view that provides in the embodiment of the invention.
Fig. 7 B is the side view cutaway drawing of E-E direction module flexible print circuit board among Fig. 7 A.
Fig. 7 C is the flexible print circuit board rear view that provides in the embodiment of the invention.
[embodiment]
In order to make purpose of the present invention, technical scheme and advantage clearer, below will the present invention be further elaborated by embodiment and accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please refer to Fig. 5, this figure has illustrated existing flexible print circuit board individual layer to bend the relative position of district 51 on the liquid crystal display module, the inventor is through scrutinizing discovery, the individual layer bending district 51 of this basic structure flexible print circuit board is very wide, but be folded in the assembling process at the liquid crystal display module back side at flexible print circuit board, only be positioned at dotted line 52 and participated in actual bending operation, and dotted line 52 does not participate in actual bending operation with the individual layer bending district on top with the individual layer of lower part bending district.In view of reason shown in Figure 5, the above partial design of the individual layer of the present invention's conventional basic structure flexible print circuit board in Fig. 5 bending district's dotted line goes out a two-layer wiring zone.
Please refer to shown in Figure 6ly, a kind of liquid crystal display module 60 comprises display panels; With the back light unit that described display panels is oppositely arranged, back light unit transports light in the described display panels; Flexible print circuit board comprises interface area part 61, is connected to described display panels; First individual layer bending district part 62, described first individual layer bending district part 62 is connected to described interface area part 61; The first two-layer wiring district part 63, the described first two-layer wiring district part 63 are connected to described first individual layer bending district part 62, and the described first two-layer wiring district part 63 comprises the circuit network of at least one two-layer wiring; Second individual layer bending district part 64, described second individual layer bending district part 64 is connected to the described first two-layer wiring district part 63, when the liquid crystal display module was assembled, described interface flexible print circuit board was distinguished the back that is placed on described back light unit after part 64 bends along described second individual layer bending; The second two-layer wiring district part 65, one end of the described second two-layer wiring district part 65 is connected to described second individual layer bending district part 64, the described second two-layer wiring district part 65 comprises that at least one light supply apparatus is to transport light in the described back light unit, the other end of the described second two-layer wiring district part can be connected to external device (ED), described external device (ED) can be a cell phone mainboard, and other microprocessor.
The circuit network of described two-layer wiring comprises the electric power network VDD to the liquid crystal display panel drive circuit power supply.Liquid crystal display module driving circuit (IC) requires the power supply electrical level VDD of each several part circuit on its chip to equate in theory, but owing to can produce certain pressure drop on the electric power network circuit on the flexible print circuit board, thereby cause the power supply electrical level of liquid crystal display module driving circuit each several part circuit can produce certain deviation, when this deviation acquires a certain degree, will cause liquid crystal display module job insecurity.The effective way that reduces liquid crystal display module driving circuit each several part circuit supply level deviation is to make the access point of each several part circuit supply as close as possible, and circuit produces the influence that pressure drop causes on the flexible print circuit board to reduce.Adopt the flexible print circuit board of existing basic structure, the wiring of electric power network VDD tends to very complicated, its wiring mainly is distributed in the two-layer wiring district part of bottom, the power supply access point of driving circuit each several part circuit all will be from the interface section at top, through the two-layer wiring district part of individual layer bending district cabling to the bottom, be connected with the electric power network VDD in the bottom two-layer wiring district, cable run distance is often distant, and the distance of the power supply access point of each several part circuit differs bigger.
And flexible print circuit board of the present invention, because electric power network VDD is routed on the first two-layer wiring district part 63, the wiring of electric power network is fairly simple, as a kind of embodiment, electric power network wiring on the first two-layer wiring district part 63 is a straight line with certain width, then be connected with the electric power network wiring, through the second two-layer wiring district part 65 of second individual layer bending district part 64 cablings to the bottom by a circuit.Simultaneously, the power supply access point of each several part circuit is connected in the electric power network wiring, and the power supply access point of liquid crystal display module driving circuit each several part circuit is basic near electric power network VDD, and cable run distance is closer, the distance of power supply access point is basic identical, and it is satisfactory for result to power.
Further, the circuit network of described two-layer wiring comprises public electrode network VCOM.At present, nearly all thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT) on the liquid crystal display module circuit public electrode network VCOM is arranged all, the VCOM network generally is connected with the color membrane substrates of display panels, is to drive the necessary public electrode of display panels.The color membrane substrates of VCOM network and display panels forms a closed circuit, requires the area of this closed circuit the smaller the better in theory, because the closed circuit area is big more, and the easy more interference from outside signals that is subjected to.The flexible print circuit board of existing basic structure is owing to the two-layer wiring district of VCOM network cabling in the flexible print circuit board bottom, and promptly near the components and parts district, loop area is often bigger.And adopt flexible print circuit board structure of the present invention, can the VCOM network layout on the first two-layer wiring district part 63, be connected with VCOM by a circuit again, on second individual layer bending district part 64 cabling to the second two-layer wiring district parts 65.The VCOM network on the first two-layer wiring district part 63 circuit and the formed loop area of color membrane substrates of display panels diminish, the risk that the VCOM network is disturbed also can reduce.As a kind of concrete embodiment, in existing design, the loop area of VCOM network on flexible print circuit board is approximately 15 * 8.2=123 square millimeter, and in structure of the present invention, the loop area of VCOM network on flexible print circuit board only is approximately 15 * 3=45 square millimeter.
Because the wiring of electric power network VDD and public electrode network VCOM has been moved on on the first two-layer wiring district part 63, therefore adopt flexible print circuit board structure of the present invention, on the second identical two-layer wiring district part 65, promptly can hold more components and parts on the components and parts district area.As a kind of embodiment, can only put into 17 components and parts on the flexible print circuit board components and parts district area of existing basic structure, and the present invention can put into 18 components and parts on components identical district area, components and parts that increase are the resistor that is connected on the liquid crystal display module driving circuit reseting network RESET more, be used to increase the impedance of reseting network RESET, strengthen the antijamming capability of reseting network RESET.The resistance value of described resistor is 1K-10K ohm.
For the electrical property network of described wiring, except aforesaid electric power network VDD and public electrode network VCOM, can also be ground loop network G ND or other electrical property network, at this and be not used in limit can be other electrical property network may.
Liquid crystal display module among the present invention, by in the individual layer bending district of existing flexible print circuit board, increasing by the first two-layer wiring district part, the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring, by circuit network is optimized adjustment, make circuit network in components and parts area district, transfer to the described first two-layer wiring district part, thereby saved the area in the components and parts district, its area can as often as possible be hidden the components and parts of putting on the flexible print circuit board, therefore can in the components and parts district, increase the circuit that helps improving liquid crystal display module electrical property reliability, make the liquid crystal display module when improving the electrical property aspect, taken into account its physical strength and optical effect again.
Please refer to shown in Figure 7ly, the present invention also provides a kind of flexible print circuit board 70, comprises interface area part 71, and described interface area part 71 comprises that at least one can be connected to the first terminal of external device (ED); First individual layer bending district part 72, described first individual layer bending district part 72 is connected to described interface area part 71; The first two-layer wiring district part 73, the described first two-layer wiring district part 73 are connected to described first individual layer bending district part 72, and the described first two-layer wiring district part 73 comprises the circuit network of at least one two-layer wiring; Second individual layer bending district part 74, described second individual layer bending district part 74 is connected to the described first two-layer wiring district part 73; The second two-layer wiring district part 75, the described second two-layer wiring district part 75 are connected to described second individual layer bending district part 74, and the described second two-layer wiring district part 75 comprises that at least one can be connected to second terminal of external device (ED).
The circuit network of described two-layer wiring comprises the electric power network VDD of power supply, and perhaps public electrode network VCOM perhaps has electric power network VDD and public electrode network VCOM and other electrical property network simultaneously.
Flexible print circuit board of the present invention increases by the first two-layer wiring district part, the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring, by circuit network is optimized adjustment, make circuit network in components and parts area district, transfer to the described first two-layer wiring district part, thereby saved the area in the components and parts district, its area can as often as possible be hidden the components and parts of putting on the flexible print circuit board, has improved the electrical property of flexible print circuit board.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a liquid crystal display module is characterized in that, comprising:
Display panels;
With the back light unit that described display panels is oppositely arranged, back light unit transports light in the described display panels;
Flexible print circuit board comprises:
The interface area part comprises that at least one the first terminal is connected to display panels;
First individual layer bending district part, described first individual layer bending district part is connected to described interface area part;
The first two-layer wiring district part, the described first two-layer wiring district part are connected to described first individual layer bending district part, and the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring;
Second individual layer bending district part, described second individual layer bending district part is connected to the described first two-layer wiring district part;
The second two-layer wiring district part, an end of the described second two-layer wiring district part are connected to described second individual layer bending district part, and the described second two-layer wiring district part comprises that at least one can be connected to second terminal of external device (ED).
2. liquid crystal display module according to claim 1 is characterized in that, the circuit network of described two-layer wiring comprises the electric power network VDD to the liquid crystal display panel drive circuit power supply.
3. liquid crystal display module according to claim 2 is characterized in that, the power supply access point of described liquid crystal display module driving circuit each several part circuit is basic near electric power network VDD.
4. according to each described liquid crystal display module in the claim 1 to 3, it is characterized in that the circuit network of described two-layer wiring comprises public electrode network VCOM.
5. liquid crystal display module according to claim 4 is characterized in that, the color membrane substrates of described public electrode network VCOM and display panels forms a closed circuit.
6. liquid crystal display module according to claim 4 is characterized in that, described liquid crystal display module increases a resistor in the second two-layer wiring district part, connects with the reseting network RESET of driving circuit.
7. liquid crystal display module according to claim 6 is characterized in that, the resistance value of described resistor is 1K-10K ohm.
8. a flexible print circuit board is characterized in that, comprising:
Interface area part, described interface area comprise that partly at least one can be connected to the first terminal of external device (ED);
First individual layer bending district part, described first individual layer bending district part is connected to described interface area part;
The first two-layer wiring district part, the described first two-layer wiring district part are connected to described first individual layer bending district part, and the described first two-layer wiring district part comprises the circuit network of at least one two-layer wiring;
Second individual layer bending district part, described second individual layer bending district part is connected to the described first two-layer wiring district part;
The second two-layer wiring district part, the described second two-layer wiring district part are connected to described second individual layer bending district part, and the described second two-layer wiring district part comprises that at least one can be connected to second terminal of external device (ED).
9. flexible print circuit board according to claim 8 is characterized in that, the circuit network of described two-layer wiring comprises the electric power network VDD of power supply.
10. according to Claim 8 or 9 described flexible print circuit boards, it is characterized in that the circuit network of described two-layer wiring comprises public electrode network VCOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101077546A CN101900894B (en) | 2009-05-27 | 2009-05-27 | Liquid crystal display module and flexible printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101077546A CN101900894B (en) | 2009-05-27 | 2009-05-27 | Liquid crystal display module and flexible printed circuit board |
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| CN101900894A true CN101900894A (en) | 2010-12-01 |
| CN101900894B CN101900894B (en) | 2012-01-25 |
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| CN2009101077546A Active CN101900894B (en) | 2009-05-27 | 2009-05-27 | Liquid crystal display module and flexible printed circuit board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103489369A (en) * | 2013-06-14 | 2014-01-01 | 友达光电股份有限公司 | Display module |
| CN105158946A (en) * | 2015-09-10 | 2015-12-16 | 武汉华星光电技术有限公司 | Liquid crystal display module and manufacturing method thereof |
| CN105611714A (en) * | 2015-12-31 | 2016-05-25 | 武汉天马微电子有限公司 | Flexible printed circuit board and display device |
| CN106711172A (en) * | 2015-11-18 | 2017-05-24 | 三星显示有限公司 | Flexible display apparatus |
| CN108763662A (en) * | 2018-05-10 | 2018-11-06 | 北京华大九天软件有限公司 | It is a kind of abnormity domain in the multiple-layer overlapped wiring method based on track |
| WO2019104745A1 (en) * | 2017-11-30 | 2019-06-06 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and lower edge frame structure thereof |
| US10709010B1 (en) | 2019-06-12 | 2020-07-07 | Himax Technologies Limited | Flexible printed circuit and display module having flexible printed circuit |
Family Cites Families (5)
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| KR100864000B1 (en) * | 2002-11-28 | 2008-10-16 | 삼성전자주식회사 | Liquid crystal display module having flexible printed circuit board |
| KR20050035970A (en) * | 2003-10-14 | 2005-04-20 | 삼성전자주식회사 | Flexible printed circuit board and liquid crystal display device using the same |
| JP4805585B2 (en) * | 2004-02-25 | 2011-11-02 | 東芝モバイルディスプレイ株式会社 | Flat display device and manufacturing method thereof |
| KR101129436B1 (en) * | 2005-05-23 | 2012-03-26 | 삼성전자주식회사 | Display device |
| JP2007304306A (en) * | 2006-05-11 | 2007-11-22 | Citizen Miyota Co Ltd | Fixing structure of liquid crystal display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103489369A (en) * | 2013-06-14 | 2014-01-01 | 友达光电股份有限公司 | Display module |
| CN105158946A (en) * | 2015-09-10 | 2015-12-16 | 武汉华星光电技术有限公司 | Liquid crystal display module and manufacturing method thereof |
| CN105158946B (en) * | 2015-09-10 | 2019-01-15 | 武汉华星光电技术有限公司 | A kind of liquid crystal display die set and preparation method thereof |
| CN106711172A (en) * | 2015-11-18 | 2017-05-24 | 三星显示有限公司 | Flexible display apparatus |
| CN105611714A (en) * | 2015-12-31 | 2016-05-25 | 武汉天马微电子有限公司 | Flexible printed circuit board and display device |
| WO2019104745A1 (en) * | 2017-11-30 | 2019-06-06 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and lower edge frame structure thereof |
| US11064607B2 (en) | 2017-11-30 | 2021-07-13 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display panel and lower bezel structure thereof |
| CN108763662A (en) * | 2018-05-10 | 2018-11-06 | 北京华大九天软件有限公司 | It is a kind of abnormity domain in the multiple-layer overlapped wiring method based on track |
| CN108763662B (en) * | 2018-05-10 | 2020-05-12 | 北京华大九天软件有限公司 | Multi-layer overlapping wiring method based on track in special-shaped layout |
| US10709010B1 (en) | 2019-06-12 | 2020-07-07 | Himax Technologies Limited | Flexible printed circuit and display module having flexible printed circuit |
| TWI705739B (en) * | 2019-06-12 | 2020-09-21 | 奇景光電股份有限公司 | Flexible printed circuit and display module having flexible printed circuit |
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Effective date of registration: 20150910 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: 518118 Pingshan Road, Pingshan Town, Shenzhen, Guangdong, No. 3001, No. Patentee before: Biyadi Co., Ltd. |
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Effective date of registration: 20190711 Address after: 343800 two phase of Wan An County Industrial Park, Ji'an, Jiangxi Patentee after: Wan'an Helitai Technology Co., Ltd. Address before: 518119 Pilot Building of BYD Company, No. 1 Yan'an Road, Kuiyong Town, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen BYD Electronic Component Co., Ltd. |