CN107801360B - Large-size segment code liquid crystal instrument display device - Google Patents
Large-size segment code liquid crystal instrument display device Download PDFInfo
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- CN107801360B CN107801360B CN201711221138.4A CN201711221138A CN107801360B CN 107801360 B CN107801360 B CN 107801360B CN 201711221138 A CN201711221138 A CN 201711221138A CN 107801360 B CN107801360 B CN 107801360B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 72
- 230000017525 heat dissipation Effects 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 13
- 239000012792 core layer Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 101150006573 PAN1 gene Proteins 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- -1 can produce filth Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
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- B60K35/50—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Instrument Panels (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A large-size segment code liquid crystal instrument display device belongs to the technical field of automobile instrument display. The invention aims to solve the problems of large occupied space and high cost of independent installation and connection of the existing automobile instrument, navigation and the like. The invention comprises a bottom shell, an instrument module and a ventilation and heat dissipation device, wherein the instrument module is provided with a combined indicator light display area and a color liquid crystal display area, the bottom shell is provided with a mounting notch, the instrument module is embedded and mounted in the mounting notch of the bottom shell, and the ventilation and heat dissipation device is mounted at the rear end of the bottom shell through bolt fastening. The invention has the advantages of complete functions, compact structure, double-screen functional interaction, no need of looking aside by a driver, convenient grasping of vehicle conditions, road conditions and running directions, improvement of the comfort level of the use of the automobile, operation of the navigation part by the front passenger seat, and integral double-screen arrangement, so that the installation and maintenance are convenient and simple, the cost can be saved, and the benefit can be increased.
Description
Technical Field
The invention relates to a segment code liquid crystal instrument display device, and belongs to the technical field of automobile instrument display.
Background
The automobile instrument consists of various instruments and indicators, especially warning lamp alarm for driver, and provides the driver with required automobile running parameter information.
The automobile is generally provided with a tachometer, a speedometer, an oil meter and a water temperature meter on an instrument panel, and other devices with other functions such as navigation and sound equipment are provided and can only be displayed on a central control table board, so that a large amount of space is wasted by split setting, the function parts are scattered, people are familiar with the automobile in a long time, the independent installation and connection of the instruments and the navigation and the like not only occupy large space due to functional limitation, but also have high cost, and a plurality of inconveniences are brought to installation and maintenance, and once the instruments or the navigation fail, the instruments and the navigation must be timely repaired, otherwise, inconvenience in operation is caused, and accidents are easy to occur.
The application of the liquid crystal instrument on the automobile is gradually increased, the display function of the instrument is more and more powerful, the heat dissipation elements on the PCB are increased, the heat productivity of the backlight source is increased due to the use of the large liquid crystal screen, and the heat generated by the PCB and the liquid crystal backlight lamp cannot be timely emitted due to the fact that the liquid crystal instrument is designed into a closed space for dust prevention and electromagnetic interference resistance, so that the display effect of the instrument is affected due to the fact that the temperature of the instrument is too high, and therefore, the fact that the heat inside the instrument is rapidly emitted into the air is important; the existing instrument usually adopts a mode of processing vent holes on an instrument mounting shell or adopting a fan direct blowing structure to dissipate heat, and the vent holes are processed on the instrument mounting shell, so that the heat dissipation effect is not ideal and the heat dissipation effect is poor; the structure is well known that the inside of the instrument assembly is not a closed space, impurities such as filings and particles and the like can be generated in the instrument assembly in the automobile driving process, the impurities are rubbed with each other in the process that the fan is directly blown to a PCB (printed Circuit Board) control circuit board for controlling the instrument, static electricity is further generated, the PCB control circuit board is an electrifying circuit, and therefore, a plurality of filings and particles with static electricity are attached to the PCB control circuit board, and the normal operation of the instrument display device can be seriously influenced by adopting the heat dissipation mode.
Therefore, miniaturization, thinning, multifunction and use reliability of the instrument become primary problems.
Disclosure of Invention
The invention aims to solve the problems of large space occupation and high cost of independent installation and connection of the existing automobile instrument, navigation and the like, and further provides a large-size segment code liquid crystal instrument display device.
The technical scheme of the invention is as follows:
the large-size section code liquid crystal instrument display device comprises a bottom shell, an instrument module and a ventilation and heat dissipation device, wherein the instrument module is provided with a combined indicator light display area and a color liquid crystal screen display area, the bottom shell is provided with a mounting notch, the instrument module is embedded and mounted in the mounting notch of the bottom shell, and the ventilation and heat dissipation device is mounted at the rear end of the bottom shell through bolt fastening.
Preferably: the ventilating and radiating device comprises an end cover, radiating fins, a ventilating and radiating cover and a ventilating body, wherein radiating water pipes are embedded in the end cover, the radiating fins are fixedly installed on the end cover, the ventilating and radiating cover is matched with the end cover for installation, the ventilating body is arranged inside the ventilating and radiating cover and comprises a ventilating channel and air guide bodies arranged on the upper side and the lower side of the ventilating channel, a transverse ventilating channel and a corresponding longitudinal ventilating channel are arranged in the air guide body, the transverse ventilating channel and the longitudinal ventilating channel are uniformly distributed along the transverse direction and the longitudinal direction of the air guide body respectively, the transverse ventilating channel and the longitudinal ventilating channel are communicated with the ventilating channel after being communicated, the right end of the ventilating channel is closed, and a centrifugal fan is arranged in the left end installation diagram of the ventilating channel.
Preferably: the ventilation channel in be provided with the filter core layer, the cooling air that centrifugal fan produced gets into vertical air flue and horizontal air flue after filtering through the filter core layer.
Preferably: the air guide bodies arranged on the upper side and the lower side of the ventilation channel are provided with inclined end faces, and the inclined end faces form a horn mouth shape.
Preferably: the ventilation and heat dissipation cover is provided with a plurality of heat exchange holes.
Preferably: the cross sections of the transverse ventilating duct and the corresponding longitudinal ventilating duct which are arranged in the air guide body are all round.
Preferably: the cross sections of the transverse ventilating duct and the corresponding longitudinal ventilating duct which are arranged in the air guide body are diamond-shaped.
Preferably: the outer surface of the instrument module is adhered with a layer of visual angle compensation film.
The invention has the following beneficial effects:
1. according to the invention, the combined indicator light display and the color liquid crystal display are combined to form a comprehensive multifunctional instrument display group, and meanwhile, the indicator light display and the color liquid crystal display function carried by the bottom shell are used for the instrument, so that the cost of opening the mould of all parts is greatly reduced, and the practicability is enhanced;
2. according to the invention, the bottom shell, the instrument module and the ventilation and heat dissipation device are fixed by adopting the buckles, so that the assembly mode is simple, and the production efficiency is improved;
3. the invention adopts the double screens to be closely matched and arranged in the shell, thereby reducing the use space in the automobile;
4. the functions are complete, the structure is compact, the double-screen functions are interacted, the driver can look at the vehicle at night, the driver can grasp the condition, the road condition and the driving direction of the vehicle conveniently, the comfort level of the automobile is improved, and the navigation part can be operated by the front passenger seat;
5. the double screens are integrally arranged, so that the installation and maintenance are convenient and simple, the cost can be saved, and the benefit can be increased;
6. the invention can effectively solve the influence of the temperature generated in the running process of the automobile on the automobile instrument by the ventilation and heat dissipation structure, and provides structural basis for optimizing the ventilation and cooling of the instrument;
7. the invention forms an L-shaped ventilation loop type cooling structure by utilizing the transverse ventilating duct and the corresponding longitudinal ventilating duct which are arranged in the air guide body, and can ensure that the automobile instrument has a larger heat dissipation coefficient on the basis of not changing the original instrument module structure, thereby enhancing the ventilation and cooling effects of the automobile instrument and reducing the highest temperature of the automobile instrument and the control circuit board.
Drawings
FIG. 1 is an exploded mounting view of a large size segment code liquid crystal instrument display device;
FIG. 2 is a structural view of the meter module;
FIG. 3 is a structural view of a ventilation and heat dissipation device;
in the figure, the structure comprises a 1-bottom shell, a 2-instrument module, a 3-ventilation heat dissipation device, a 4-combination indicator light display area, a 5-color liquid crystal display area, a 6-installation notch, a 7-end cover, 8-radiating fins, a 9-ventilation heat dissipation cover, a 10-ventilation body, a 11-heat dissipation water pipe, a 12-ventilation channel, a 13-air guiding body, a 14-transverse ventilation channel, a 15-longitudinal ventilation channel, a 16-centrifugal fan, a 17-filter core layer, an 18-inclined end surface, a 19-heat exchange hole and a 20-visual angle compensation film.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The first embodiment is as follows: referring to fig. 1 to 3, the large-size segment code liquid crystal instrument display device of the present embodiment includes a bottom case 1, an instrument module 2 and a ventilation and heat dissipation device 3, the instrument module 2 has a combined indicator light display area 4 and a color liquid crystal display area 5, the bottom case 1 has a mounting notch 6, the instrument module 2 is embedded in the mounting notch 6 of the bottom case 1, and the ventilation and heat dissipation device 3 is mounted at the rear end of the bottom case 1 through bolt fastening. So set up, this liquid crystal instrument display device's instrument module 2 has combination pilot lamp display region 4 and color LCD display region 5, pilot lamp display region 4 adopts the section sign indicating number screen instrument display screen like this, color LCD display region 5 adopts the touch-sensitive display screen of functions such as GPS navigation, this kind of display device who gathers double-screen display, multiple functional, compact structure, double-screen function is interactive, driver's visual strabism alright be in a glance surplus, be convenient for master vehicle condition, road conditions and direction of traveling, improved the comfort level that the car was used, the passenger seat also can operate navigation portion simultaneously.
The second embodiment is as follows: referring to fig. 1 to 3, in the large-size segment code lcd instrument display device of this embodiment, the ventilation and heat dissipation device 3 includes an end cover 7, a heat dissipation fin 8, a ventilation and heat dissipation cover 9 and a ventilation body 10, the heat dissipation water pipe 11 is pre-buried in the end cover 7, the heat dissipation fin 8 is fixedly installed on the end cover 7, the ventilation and heat dissipation cover 9 and the end cover 7 are cooperatively installed, the ventilation body 10 is disposed inside the ventilation and heat dissipation cover 9, the ventilation body 10 includes a ventilation channel 12 and a wind guide body 13 disposed on the upper side and the lower side of the ventilation channel 12, a transverse ventilation channel 14 and a corresponding longitudinal ventilation channel 15 are disposed inside the wind guide body 13, the transverse ventilation channel 14 and the longitudinal ventilation channel 15 are uniformly distributed along the transverse direction and the longitudinal direction of the wind guide body 13, the transverse ventilation channel 14 and the longitudinal ventilation channel 15 are communicated with the ventilation channel 12 after establishing communication, the right end of the ventilation channel 12 is closed, and a centrifugal fan 16 is disposed on the left end of the ventilation channel 12. So set up, install ventilation heat abstractor at the rear end of drain pan 1, ventilation heat abstractor 3's end cover 7 and instrument module 2 install in drain pan 1 jointly inside, both do not take place to contact, when instrument module 2's control circuit board (PCB circuit board) produced heat, end cover 7 can absorb this part of heat, and heat part is taken away by the heat dissipation water pipe 11 that sets up in end cover 7, another part is conducted and is set up on the fin 8 of the other end of end cover 7, and still have centrifugal fan 16 in the space that fin 8 is located, wind-guiding body 13 inside horizontal air flue 14 and corresponding vertical air flue 15, under centrifugal fan 16's effect, the cold air is through horizontal air flue 14 and corresponding vertical air flue 15 effect on fin 8, avoided the cooling wind directly to blow on the PCB circuit board, under guaranteeing instrument module normal work, the radiating efficiency has been accelerated, and the ventilation of instrument module 2 has been realized.
And a third specific embodiment: referring to fig. 1 to 3, in the embodiment, a filter core layer 17 is disposed in the ventilation channel 12 of the large-size segment code lcd device according to the embodiment, and cooling air generated by the centrifugal fan 16 is filtered by the filter core layer 17 and then enters the longitudinal ventilation channel 15 and the transverse ventilation channel 14. So set up, the cooling air that centrifugal fan 16 produced gets into ventilation channel 12 to under the effect of filter core layer 17, filtered the inside impurity such as can produce filth, particulate matter of automobile travel process instrument assembly, solved the poor problem of current instrument ventilation radiating effect, also solved the static particulate matter that ordinary instrument ventilation radiating process produced simultaneously and attached to the PCB circuit board, influenced the normal use of instrument.
The specific embodiment IV is as follows: referring to fig. 1 to 3, in the large-size segment code lcd instrument display device according to the present embodiment, the air guide body 13 disposed on the upper and lower sides of the ventilation channel 12 is formed with an inclined end surface 18, and the inclined end surface 18 is formed in a bell mouth shape. So set up, loudspeaker form vent not only can be convenient for the heat dissipation of fin, can also provide an effectual direction for the cooling air after purifying for the cooling air directly acts on the end cover 7, improves the radiating effect of end cover.
Fifth embodiment: referring to fig. 1 to 3, a plurality of heat exchanging holes 19 are provided in the ventilation and heat dissipation cover 9 of the large-sized segment code lcd device according to the present embodiment. So set up, the hot air flow that produces in ventilation heat dissipation cover 9 inside can be along with the effluvium of more heat transfer hole 19, and ventilation fully dispels the heat conveniently like this, and ventilation heat dissipation cover is difficult for receiving the heat altered shape, and life is longer.
Specific embodiment six: referring to fig. 1 to 3, the cross sections of the transverse air duct 14 and the corresponding longitudinal air duct 15 provided in the air guide body 13 of the large-size segment code liquid crystal display device according to the present embodiment are circular. So set up, the cross-section of horizontal air flue 14 and corresponding vertical air flue 15 is circular vent, adopts circular vent, and the cooling air receives the deformation in wind channel little, and the cooling air velocity of flow is fast, has improved the radiating efficiency of radiating fin and end cover.
Seventh embodiment: referring to fig. 1 to 3, in the large-sized segment code lcd device according to the present embodiment, the cross sections of the transverse air duct 14 and the corresponding longitudinal air duct 15 formed in the air guide body 13 are diamond-shaped. So set up, the cross-section of horizontal air flue 14 and corresponding vertical air flue 15 is the rhombus vent, based on the characteristics of rhombus, and the rhombus structure is upper and lower two is little, and the intermediate level is big, gathers together in the middle of the wind direction of rhombus exit, and the cooling air flows along the intermediate level of rhombus, and the noise of this kind of flow effectively falls, can guarantee the size of air output simultaneously, also can ensure radiating fin and end cover effective heat dissipation.
Eighth embodiment: referring to fig. 1 to 3, a viewing angle compensation film 20 is attached to the outer surface of the meter module 2 of the large-size segment code lcd meter display device according to the present embodiment. Thus, the viewing angle compensation film can increase the viewing angle.
The present embodiment is only exemplary of the present patent, and does not limit the scope of protection thereof, and those skilled in the art may also change the part thereof, so long as the spirit of the present patent is not exceeded, and the present patent is within the scope of protection thereof.
Claims (7)
1. Large-size section code liquid crystal instrument display device, its characterized in that: the novel multifunctional intelligent instrument module comprises a bottom shell (1), an instrument module (2) and a ventilation and heat dissipation device (3), wherein the instrument module (2) is provided with a combined indicator light display area (4) and a color liquid crystal display area (5), the bottom shell (1) is provided with a mounting notch (6), the instrument module (2) is embedded and mounted in the mounting notch (6) of the bottom shell (1), and the ventilation and heat dissipation device (3) is mounted at the rear end of the bottom shell (1) through bolt fastening; the utility model provides a ventilation heat abstractor (3) include end cover (7), radiating fin (8), ventilation heat dissipation cover (9) and ventilation body (10), end cover (7) in pre-buried radiating water pipe (11), radiating fin (8) fixed mounting on end cover (7), ventilation heat dissipation cover (9) and end cover (7) cooperation installation, ventilation body (10) set up inside ventilation heat dissipation cover (9), ventilation body (10) include ventilation channel (12) and set up wind-guiding body (13) in ventilation channel (12) upper and lower both sides, wind-guiding body (13) are inside to be offered horizontal air flue (14) and corresponding vertical air flue (15), horizontal air flue (14) and vertical air flue (15) are arranged evenly along the horizontal and vertical of wind-guiding body (13) respectively, the left end that sets up intercommunication back and ventilation channel (12) are linked together transverse air flue (14) and vertical air flue (15), ventilation channel (12) right-hand member seal, ventilation channel (12)'s left end install centrifugal fan (16).
2. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: a filter core layer (17) is arranged in the ventilation channel (12), and cooling air generated by the centrifugal fan (16) enters the longitudinal ventilation channel (15) and the transverse ventilation channel (14) after being filtered by the filter core layer (17).
3. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: the air guide bodies (13) arranged on the upper side and the lower side of the ventilation channel (12) are provided with inclined end faces (18), and the inclined end faces (18) form a horn mouth shape.
4. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: the ventilation and heat dissipation cover (9) is provided with a plurality of heat exchange holes (19).
5. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: the cross sections of the transverse ventilating duct (14) and the corresponding longitudinal ventilating duct (15) which are arranged in the air guide body (13) are all round.
6. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: the cross sections of the transverse ventilating duct (14) and the corresponding longitudinal ventilating duct (15) which are arranged in the air guide body (13) are diamond-shaped.
7. The large-size segment code liquid crystal instrument display device according to claim 1, wherein: the outer surface of the instrument module (2) is coated with a layer of visual angle compensation film (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221138.4A CN107801360B (en) | 2017-11-28 | 2017-11-28 | Large-size segment code liquid crystal instrument display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221138.4A CN107801360B (en) | 2017-11-28 | 2017-11-28 | Large-size segment code liquid crystal instrument display device |
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| CN107801360A CN107801360A (en) | 2018-03-13 |
| CN107801360B true CN107801360B (en) | 2023-05-05 |
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| CN201711221138.4A Active CN107801360B (en) | 2017-11-28 | 2017-11-28 | Large-size segment code liquid crystal instrument display device |
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Families Citing this family (1)
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| CN108437797A (en) * | 2018-04-27 | 2018-08-24 | 张家港乐达汽车电器有限公司 | A kind of bus instrument board with light regulatory function |
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|---|---|---|---|---|
| US6198222B1 (en) * | 1998-06-15 | 2001-03-06 | Acer Display Technology, Inc. | Plasma display device with heat dissipation channels |
| CN203217891U (en) * | 2013-04-02 | 2013-09-25 | 湖北爱商光电股份有限公司 | Outdoor LED (light-emitting diode) display screen with fine heat dissipation effect |
| CN205645149U (en) * | 2016-05-04 | 2016-10-12 | 辽宁赛普瑞科技有限公司 | Liquid crystal concatenation screen |
| CN205720980U (en) * | 2016-04-29 | 2016-11-23 | 深圳市晶联讯电子有限公司 | A kind of LCDs cooling system |
| CN106740564A (en) * | 2017-01-09 | 2017-05-31 | 吕冬芳 | Double screen automobile instrument can be interacted |
| CN207427707U (en) * | 2017-11-28 | 2018-05-29 | 黑龙江天有为电子有限责任公司 | Large scale segment encode liquid crystal instrument display device |
-
2017
- 2017-11-28 CN CN201711221138.4A patent/CN107801360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198222B1 (en) * | 1998-06-15 | 2001-03-06 | Acer Display Technology, Inc. | Plasma display device with heat dissipation channels |
| CN203217891U (en) * | 2013-04-02 | 2013-09-25 | 湖北爱商光电股份有限公司 | Outdoor LED (light-emitting diode) display screen with fine heat dissipation effect |
| CN205720980U (en) * | 2016-04-29 | 2016-11-23 | 深圳市晶联讯电子有限公司 | A kind of LCDs cooling system |
| CN205645149U (en) * | 2016-05-04 | 2016-10-12 | 辽宁赛普瑞科技有限公司 | Liquid crystal concatenation screen |
| CN106740564A (en) * | 2017-01-09 | 2017-05-31 | 吕冬芳 | Double screen automobile instrument can be interacted |
| CN207427707U (en) * | 2017-11-28 | 2018-05-29 | 黑龙江天有为电子有限责任公司 | Large scale segment encode liquid crystal instrument display device |
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Address after: 152000 Economic Development Zone, Beilin District, Suihua City, Heilongjiang Province Applicant after: Heilongjiang tianyouwei Electronics Co.,Ltd. Address before: 152000 Economic Development Zone, Beilin District, Suihua City, Heilongjiang Province Applicant before: HEILONGJIANG TIANYOUWEI ELECTRONIC Co.,Ltd. |
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