CN102033337B - Detection equipment and method for liquid crystal display device - Google Patents
Detection equipment and method for liquid crystal display device Download PDFInfo
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- CN102033337B CN102033337B CN 200910093488 CN200910093488A CN102033337B CN 102033337 B CN102033337 B CN 102033337B CN 200910093488 CN200910093488 CN 200910093488 CN 200910093488 A CN200910093488 A CN 200910093488A CN 102033337 B CN102033337 B CN 102033337B
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- liquid crystal
- crystal indicator
- light guide
- guide plate
- supporting
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Abstract
The invention discloses detection equipment and a detection method for a liquid crystal display device. The detection equipment comprises a detection room, at least one supporting device and a supporting part, wherein the at least one supporting device is positioned in the detection room; the supporting part is placed on the supporting device; the detection room is used for detecting the liquid crystal display device; the supporting device is used for supporting the supporting part at a set angle; and the supporting part is used for supporting the liquid crystal display device. In the technical scheme provided by the embodiment of the invention, the supporting part is arranged on the supporting device and is used for supporting the liquid crystal display device, so that when the liquid crystal display device is detected, the supporting part applies an upward supporting force to a light guide plate in the liquid crystal display device, the supporting force can partially or completely counteract the gravity of the light guide plate, the bending degree of the light guide plate in the liquid crystal display device under the action of the gravity is effectively reduced, and the drape phenomena of an optical membrane layer caused by the bending of the light guide plate are effectively reduced.
Description
Technical field
The present invention relates to liquid crystal display and make field, particularly a kind of checkout equipment of liquid crystal indicator and detection method.
Background technology
Backlight module in the liquid crystal indicator comprises backlight, optical film, light guide plate and reflecting plate.Along with the thickness of various liquid crystal indicators towards the slimming future development, be subject to the constraint of liquid crystal indicator thickness, backlight module also only can adopt thin light guide plate.After the liquid crystal indicator assembling is finished, need to carry out reliability (THO) experiment to liquid crystal indicator, for example, liquid crystal indicator can be placed on temperature and be 50 ℃, humidity and be in 80% the environment 240 hours, with the Dependability Problem of prediction liquid crystal indicator.The method of in the prior art liquid crystal indicator being carried out reliability experiment is: the liquid crystal indicator of opening is placed on the bracing or strutting arrangement in the sensing chamber, observe the image quality of liquid crystal panel for the handled easily person, the angle that liquid crystal indicator is placed is 30 to 60 degree.
Because traditional liquid crystal indicator is not very high to the requirement of thickness, therefore backlight module adopts the thicker light guide plate of thickness usually, the above light guide plate of 4mm for example, and traditional liquid crystal indicator is provided with backboard, the material of this backboard is metal, hardness is larger, liquid crystal indicator is played the effect of support, can prevent effectively that the light guide plate of liquid crystal indicator from deformation occuring in vertical direction.After adopting the reliability experiment of method through certain hour of above-mentioned reliability experiment, the deformation phenomenon that the light guide plate of traditional liquid crystal indicator only can shrink in its plane and expand and other can't occur.
But, for slim liquid crystal indicator, because it is very high to thickness requirement, so backlight module adopts the light guide plate of thinner thickness usually, the light guide plate about 1mm to 2mm for example, even the thickness of light guide plate only is 0.4mm to 0.6mm in some novel liquid crystal indicators.And for reducing the thickness of backlight module, the back side of comparing light guide plate with traditional backlight module does not arrange backboard, and it is the reflecting plate of resin that only there is material in the back side of light guide plate, and this reflecting plate hardness is lower, is difficult to prevent that light guide plate from deformation occuring in vertical direction.Therefore, after the method that slim liquid crystal indicator is adopted above-mentioned reliability experiment was carried out the reliability experiment, the deformation phenomenon can appear in the light guide plate of backlight module.Particularly, slim liquid crystal indicator carries out the schematic diagram of reliability experiment can be referring to Fig. 1 and Fig. 2, Fig. 1 is a kind of schematic diagram that liquid crystal indicator carries out the reliability experiment in the prior art, Fig. 2 is the another kind of schematic diagram that liquid crystal indicator carries out the reliability experiment in the prior art, liquid crystal indicator comprises liquid crystal panel 51 and backlight module, for clearly expressing the change of shape of light guide plate, the backlight module among Fig. 1 and Fig. 2 only shows light guide plate 52.The liquid crystal indicator of opening is positioned on the bracing or strutting arrangement in the sensing chamber.This bracing or strutting arrangement comprises brace table 2 and support rail 3, and support rail 3 can be directly fixed on the inwall of sensing chamber, at this its lateral plan only is shown.Observe the image quality of liquid crystal panel for the handled easily person, the angle of liquid crystal indicator placement is set to 30 to 60 degree usually.Figure 1 shows that the state of liquid crystal indicator when beginning to carry out the reliability experiment, as can be seen from Figure 1, any deformation phenomenon does not occur in light guide plate 52; Figure 2 shows that the state that carries out reliability experiment liquid crystal indicator after 24 hours, as can be seen from Figure 2, be positioned over for a long time the light guide plate 52 in the hot and humid environment, be subjected to gravity can produce bending.
When slim liquid crystal indicator being adopted method of the prior art carry out the reliability experiment, long-time light guide plate of placing in the Chu hot and humid environment can bend by gravitate, the a plurality of optical films that cause being positioned on the light guide plate are equivalent to be placed on the bottom surface of a depression, therefore fold (wrinkle) phenomenon can occur on the optical film, thereby seriously influence the picture disply quality.
Summary of the invention
The objective of the invention is for the problems of the prior art, a kind of checkout equipment and detection method of liquid crystal indicator is provided.
For achieving the above object, the invention provides a kind of checkout equipment of liquid crystal indicator, comprising: sensing chamber, be positioned at described sensing chamber at least one bracing or strutting arrangement, be positioned over the support component on the described bracing or strutting arrangement and be arranged at regulating device on the trailing flank of described sensing chamber;
Described sensing chamber is used for liquid crystal indicator is detected;
Described bracing or strutting arrangement is used for supporting described support component with set angle; Described bracing or strutting arrangement comprises brace table and the support rail that is positioned at described brace table top, and described support rail is connected with described regulating device, and described brace table is used for supporting described support component;
Described support component is used for supporting described liquid crystal indicator;
Described regulating device is used for regulating described support rail and makes described support rail support described support component with described set angle.
For achieving the above object, the present invention also provides a kind of detection method of liquid crystal indicator, comprising:
Support component is positioned on the bracing or strutting arrangement in the sensing chamber, and described bracing or strutting arrangement supports described support component with set angle;
Liquid crystal indicator is positioned on the described support component;
Described liquid crystal indicator is detected.
In the technical scheme in the embodiment of the invention, at bracing or strutting arrangement one support component is set, by the support member supports liquid crystal indicator.Like this when liquid crystal indicator is detected, support component can produce anchorage force upwards to the light guide plate in the liquid crystal indicator, this anchorage force can be offset the gravity of light guide plate some or all ofly, therefore the degree that bends of the light guide plate gravitate in the liquid crystal indicator is effectively reduced, thereby has effectively reduced the fold phenomenon that causes optical film to occur because of bend of light conducting plate.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is a kind of schematic diagram that liquid crystal indicator carries out the reliability experiment in the prior art;
Fig. 2 is the another kind of schematic diagram that liquid crystal indicator carries out the reliability experiment in the prior art;
Fig. 3 is the schematic diagram of liquid crystal indicator experiment one of the present invention;
Fig. 4 is the schematic diagram of liquid crystal indicator experiment two of the present invention;
Fig. 5 is the schematic diagram of liquid crystal indicator experiment three of the present invention;
Fig. 6 is the schematic diagram of light guide plate of the present invention and optical film deformation;
The structural representation of the checkout equipment of a kind of liquid crystal indicator that Fig. 7 provides for the embodiment of the invention one;
Fig. 8 be among Fig. 7 A to view;
The structural representation of the checkout equipment of a kind of liquid crystal indicator that Fig. 9 provides for the embodiment of the invention two;
Figure 10 is the schematic rear view of liquid crystal indicator among Fig. 9;
Figure 11 is the floor map of bracing or strutting arrangement among Fig. 9;
The process flow diagram of the detection method of a kind of liquid crystal indicator that Figure 12 provides for the embodiment of the invention three.
Embodiment
The inventor produces crooked impact for understanding gravity to light guide plate in realizing process of the present invention, carried out repeatedly the reliability experiment.Before carrying out the reliability experiment, reliability is tested issuable result and is set to a plurality of horizontal grade L0 to L5, is specially:
L0: optical film corrugationless;
L1: few fold appears in optical film;
L2: a small amount of fold appears in optical film, but a small amount of fold that occurs is in the tolerance interval;
L3: the fold that optical film occurs can directly be observed out, reaches the level that can cause picture quality problems;
L4: serious fold phenomenon appears in optical film, causes liquid crystal indicator to sell;
L5: the most serious fold phenomenon appears in optical film.
The inventor has carried out following reliability experiment to liquid crystal indicator:
Experiment one: liquid crystal indicator is positioned on the bracing or strutting arrangement in the sensing chamber, make liquid crystal panel 51 be positioned at light guide plate 52 tops, this bracing or strutting arrangement comprises brace table 2 and support rail 3, regulating support rail 3 makes liquid crystal indicator place horizontal by 30 degree angles, as shown in Figure 3, Fig. 3 is the schematic diagram of liquid crystal indicator experiment one of the present invention.
Experiment two: liquid crystal indicator is positioned on the bracing or strutting arrangement in the sensing chamber, make liquid crystal panel 51 be positioned at light guide plate 52 tops, this bracing or strutting arrangement comprises brace table 2 and support rail 3, regulating support rail 3 makes liquid crystal indicator place horizontal by 70 degree angles, as shown in Figure 4, Fig. 4 is the schematic diagram of liquid crystal indicator experiment two of the present invention.
Experiment three: on the bracing or strutting arrangement that is positioned over behind the liquid crystal indicator Rotate 180 degree in the sensing chamber, this moment, liquid crystal panel 51 was positioned at light guide plate 52 belows, regulating support rail 3 makes liquid crystal indicator place horizontal by miter angle, as shown in Figure 5, Fig. 5 is the schematic diagram of liquid crystal indicator experiment three of the present invention.
Above-mentioned experiment one to experiment three under the environment of identical high temperature and high humidity, as shown in table 1 below through the result after 72 hours:
Table 1
| Experiment content | Experimental result | Comment |
| Experiment one | L3.5 | Experimental result be in L3 and L4 between |
| Experiment two | L2.5 | Experimental result be in L2 and L3 between |
| Experiment three | L0 |
By the experimental result of above-mentioned experiment one and experiment two as can be known, when liquid crystal indicator during horizontal by certain angle, the gravitate light guide plate can bend, angle between liquid crystal indicator and the surface level is less, the degree of crook of light guide plate is more serious, and the fold that produces on the optical film thus is also more serious.Because with liquid crystal indicator Rotate 180 degree, light guide plate is positioned on the liquid crystal panel in the experiment three, because light guide plate is subject to the effect of the anchorage force that liquid crystal panel makes progress and do not bend, so also do not occur fold on the optical film.In sum, when liquid crystal indicator horizontal by certain angle, and light guide plate is subject to the time spent of doing of the power opposite with gravity direction, light guide plate can not bend.
In above-mentioned experiment one and experiment two, if liquid crystal indicator is in the hot and humid environment for a long time, light guide plate 52 can produce deformation set, thereby deformation set also appears in the optical film 54 that causes being positioned on this light guide plate 52, as shown in Figure 6, Fig. 6 is the schematic diagram of light guide plate of the present invention and optical film deformation.Among Fig. 6, because fold appears in optical film 54, cause having occurred on the optical film 54 the inhomogeneous position 541 of many places printing opacity, non-uniform phenomenon appears in the light that the inhomogeneous position 541 of this printing opacity causes seeing through optical film 54.Even reappose liquid crystal indicator in normal temperature environment this moment, the fold phenomenon also can't disappear owing to the deformation set of optical film 54.
For solving the fold phenomenon that causes optical film to occur owing to bend of light conducting plate, the embodiment of the invention one provides a kind of checkout equipment of liquid crystal indicator, the structural representation of the checkout equipment of a kind of liquid crystal indicator that Fig. 7 provides for the embodiment of the invention one, Fig. 8 be among Fig. 7 A to view, as shown in Figure 7 and Figure 8, this equipment comprises sensing chamber 1, is positioned at least one bracing or strutting arrangement of sensing chamber 1 and is positioned over support component 4 on the bracing or strutting arrangement.
Sensing chamber 1 is used for liquid crystal indicator is detected.Particularly, the detection carried out of 1 pair of liquid crystal indicator of sensing chamber 5 can be tested for reliability.Liquid crystal indicator 5 comprises liquid crystal panel 51 and the backlight module that is positioned at liquid crystal panel 51 belows, and in the present embodiment, the structure of backlight module is only with light guide plate 52 expressions.
Bracing or strutting arrangement is used for set angle supported parts 4.Particularly, bracing or strutting arrangement can comprise brace table 2 and the support rail 3 that is positioned at brace table 2 tops.Further, the checkout equipment of liquid crystal indicator also comprises the regulating device 7 on the trailing flank 11 that is arranged at sensing chamber 1.These regulating device 7 parts are arranged at the inside of sensing chamber 1, and part is arranged at the outside of sensing chamber 1, and the position that is represented by dotted lines among Fig. 7 is the part that regulating device 7 is arranged at sensing chamber 1 outside.Support rail 3 is connected with regulating device 7.Brace table 2 is used for supported parts 4, and regulating device 7 is used for regulating support rail 3 makes support rail 3 with set angle supported parts 4.Particularly, can move up and down to reach the purpose that changes support rail 3 positions at trailing flank 11 by regulating and controlling device 7, thereby make support rail 3 with set angle supported parts 4.Regulating device 7 can drive by computer control and by motor, the purpose that moves up and down with the trailing flank 11 that reaches in sensing chamber 1; Perhaps regulating device 7 can be passed through manual control, by the operator regulating device 7 is regulated, and regulating device 7 is moved up and down at the trailing flank 11 of sensing chamber 1.In the present embodiment, set angle can for 30 the degree to 60 the degree, be preferably 45 the degree.Adopt above-mentioned set angle when liquid crystal indicator being carried out the reliability experiment, the person of being convenient to operation observes the image quality of liquid crystal indicator.When needs change set angle, can realize change to set angle by the position that regulating device 7 is adjusted support rails 3, implementation is simple.In the present embodiment, only as example describes, in the practical application a plurality of bracing or strutting arrangements can be set as required take a bracing or strutting arrangement (being brace table 2 and support rail 3).And each brace table 2 and support rail 3 can be used for supporting at least one liquid crystal indicator 5.Among Fig. 7 to support three liquid crystal indicators 5 as example.
As shown in Figure 8, when liquid crystal indicator being carried out the reliability experiment, support component 4 can produce anchorage force upwards to the light guide plate 52 in the liquid crystal indicator, this anchorage force can be offset the gravity of light guide plate 52 some or all ofly, therefore the degree that bends of light guide plate 52 gravitates in the liquid crystal indicator 5 is effectively reduced, thereby has effectively reduced the fold phenomenon that causes optical film to occur because of bend of light conducting plate.Particularly, when this anchorage force can all be offset the gravity of light guide plate 52, can effectively avoid the fold phenomenon that causes optical film to occur because of bend of light conducting plate.
The checkout equipment of the liquid crystal indicator in the present embodiment arranges a support component at bracing or strutting arrangement, by the support member supports liquid crystal indicator.When the checkout equipment of the liquid crystal indicator in adopting the present embodiment detects liquid crystal indicator like this, support component can produce anchorage force upwards to the light guide plate in the liquid crystal indicator, this anchorage force can be offset the gravity of light guide plate some or all ofly, therefore the degree that bends of the light guide plate gravitate in the liquid crystal indicator is effectively reduced, thereby has effectively reduced the fold phenomenon that causes optical film to occur because of bend of light conducting plate.Particularly, when this anchorage force can all be offset the gravity of light guide plate, can effectively avoid the fold phenomenon that causes optical film to occur because of bend of light conducting plate.Simultaneously, compared with prior art, the result that the checkout equipment of the liquid crystal indicator among employing the present invention draws when liquid crystal indicator is carried out the reliability experiment, more can react the duty of the liquid crystal indicator under the actual environment, thereby the client who makes this liquid crystal indicator of employing has avoided the product of the employing liquid crystal indicator of exploitation is carried out unnecessary design alteration, and the problems such as the cost that is caused by design alteration rising and development time prolongation.
The structural representation of the checkout equipment of a kind of liquid crystal indicator that Fig. 9 provides for the embodiment of the invention two, Figure 10 is the schematic rear view of liquid crystal indicator among Fig. 9, Figure 11 is the floor map of bracing or strutting arrangement among Fig. 9, such as Fig. 9, Figure 10 and shown in Figure 11, the present embodiment is on the basis of above-described embodiment one, be provided with groove 6 on the support component 4, groove 6 is corresponding with the cable connecting portion 53 of liquid crystal indicator 5, and is used for placing this cable connecting portion 53.Be positioned at the below of liquid crystal indicator 5 among Fig. 9 because of support component 4, so adopt the position of empty wire frame representation groove 6.
Particularly, as shown in figure 10, can there be cable connecting portion 53 in the back side of liquid crystal indicator 5, and this cable connecting portion 53 is raised position at the back side of liquid crystal indicator 5.Like this, when being positioned over liquid crystal indicator 5 on the bracing or strutting arrangement 4, the cable connecting portion 53 of projection can make liquid crystal indicator 5 can't lie on the bracing or strutting arrangement 4, thereby affect the support effect of 4 pairs of light guide plate 52 of bracing or strutting arrangement owing to there being certain thickness.
Therefore, can a groove 6 be set at bracing or strutting arrangement 4, as shown in figure 11, the shape of this groove 6 and size can arrange according to shape and the size of cable connecting portion 53.
When being positioned over liquid crystal indicator 5 on the bracing or strutting arrangement 4, the cable connecting portion 53 of liquid crystal indicator 5 can be positioned in the groove 6, thereby liquid crystal indicator 5 can be lain on the bracing or strutting arrangement 4, the problem of effectively avoiding the support effect of 4 pairs of light guide plate 52 of bracing or strutting arrangement that the existence owing to cable connecting portion 53 causes to reduce.
The present invention also provides a kind of detection method of liquid crystal indicator, this detection method can adopt the checkout equipment of above-mentioned liquid crystal indicator that liquid crystal indicator is detected, can be referring to the description among embodiment one or the embodiment two for concrete structure and the function thereof of the checkout equipment of liquid crystal indicator.
The process flow diagram of the detection method of a kind of liquid crystal indicator that Figure 12 provides for the embodiment of the invention three, as shown in figure 12, the method comprises:
In the present embodiment, for ease of the operator liquid crystal indicator is observed, set angle can for 30 the degree to 60 the degree.
In the present embodiment, the detection that liquid crystal indicator is carried out is the reliability experiment.
Further, can also comprise in the present embodiment: the step that the operator observes liquid crystal indicator.Because liquid crystal indicator is placed with set angle, so the operator can be directly the picture of liquid crystal indicator is checked.
In the detection method of the liquid crystal indicator of the present embodiment, place a support component at bracing or strutting arrangement, by the support member supports liquid crystal indicator.Like this when liquid crystal indicator is detected, support component can produce anchorage force upwards to the light guide plate in the liquid crystal indicator, this anchorage force can be offset the gravity of light guide plate some or all ofly, therefore the degree that bends of the light guide plate gravitate in the liquid crystal indicator is effectively reduced, thereby has effectively reduced the fold phenomenon that causes optical film to occur because of bend of light conducting plate.Particularly, when this anchorage force can all be offset the gravity of light guide plate, can effectively avoid the fold phenomenon that causes optical film to occur because of bend of light conducting plate.Simultaneously, compared with prior art, the result that the detection method of the liquid crystal indicator among employing the present invention draws when liquid crystal indicator is carried out the reliability experiment, more can react the duty of the liquid crystal indicator under the actual environment, thereby the client who makes this liquid crystal indicator of employing has avoided the product of the employing liquid crystal indicator of exploitation is carried out unnecessary design alteration, and the problems such as the cost that is caused by design alteration rising and development time prolongation.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (4)
1. the checkout equipment of a liquid crystal indicator, it is characterized in that, comprising: sensing chamber, be positioned at described sensing chamber at least one bracing or strutting arrangement, be positioned over the support component on the described bracing or strutting arrangement and be arranged at regulating device on the trailing flank of described sensing chamber;
Described sensing chamber is used for liquid crystal indicator is detected;
Described bracing or strutting arrangement is used for supporting described support component with set angle; Described bracing or strutting arrangement comprises brace table and the support rail that is positioned at described brace table top, and described support rail is connected with described regulating device, and described brace table is used for supporting described support component;
Described support component is used for supporting described liquid crystal indicator;
Described regulating device is used for regulating described support rail and makes described support rail support described support component with described set angle.
2. the checkout equipment of liquid crystal indicator according to claim 1 is characterized in that, is provided with the groove corresponding with the cable connecting portion of described liquid crystal indicator on the described support component, and described groove is used for placing described cable connecting portion.
3. the checkout equipment of liquid crystal indicator according to claim 1 and 2 is characterized in that, the material of described bracing or strutting arrangement comprises polymetylmethacrylate.
4. the checkout equipment of liquid crystal indicator according to claim 1 and 2 is characterized in that, described set angle comprises that 30 degree are to 60 degree.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093488 CN102033337B (en) | 2009-09-24 | 2009-09-24 | Detection equipment and method for liquid crystal display device |
| US12/886,906 US8816714B2 (en) | 2009-09-24 | 2010-09-21 | Testing apparatus and testing method for LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093488 CN102033337B (en) | 2009-09-24 | 2009-09-24 | Detection equipment and method for liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN102033337A CN102033337A (en) | 2011-04-27 |
| CN102033337B true CN102033337B (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910093488 Expired - Fee Related CN102033337B (en) | 2009-09-24 | 2009-09-24 | Detection equipment and method for liquid crystal display device |
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| CN (1) | CN102033337B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307940A (en) * | 2018-03-22 | 2019-02-05 | 苏州故善得电子科技有限公司 | A kind of fixation device when adjustable LCD liquid crystal display screen detects |
| CN109298552A (en) * | 2018-03-22 | 2019-02-01 | 苏州故善得电子科技有限公司 | A kind of fixation device detecting LCD liquid crystal display screen |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784970Y (en) * | 2005-03-26 | 2006-05-31 | 群康科技(深圳)有限公司 | Image-detecting equipment and its angel adjusting equipment |
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- 2009-09-24 CN CN 200910093488 patent/CN102033337B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784970Y (en) * | 2005-03-26 | 2006-05-31 | 群康科技(深圳)有限公司 | Image-detecting equipment and its angel adjusting equipment |
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| CN102033337A (en) | 2011-04-27 |
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Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150707 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150707 |
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Effective date of registration: 20150707 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE TECHNOLOGY GROUP Co.,Ltd. Patentee after: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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