CN104155192B - Light guide plate torsional test method - Google Patents
Light guide plate torsional test method Download PDFInfo
- Publication number
- CN104155192B CN104155192B CN201310174230.5A CN201310174230A CN104155192B CN 104155192 B CN104155192 B CN 104155192B CN 201310174230 A CN201310174230 A CN 201310174230A CN 104155192 B CN104155192 B CN 104155192B
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- described light
- test method
- torsional test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
nullA kind of light guide plate torsional test method，The method comprises the following steps: provide a light guide plate，Check that described light guide plate is the most normal，Light guide plate is cut into preset area，Light guide plate is carried out deflection test，Obtain the theory deformation amount of light guide plate，Two fixtures are provided，The two ends that two fixtures are respectively used to light guide plate is relative apply external force in opposite direction，Two ends relative for light guide plate are folded in two fixtures respectively，Light guide plate is made to form default twisted state，Keep the first Preset Time，Light guide plate is taken out from two fixtures，Under room temperature, light guide plate is stood at least the second Preset Time，Light guide plate is carried out deflection test，Obtain the practical distortion amount of light guide plate，When light guide plate is normal，Obtain the difference between the second deflection and the first deflection，When difference is in preset range，Judge that torsional rigidity and the antitorque toughness of light guide plate can meet life-time service requirement.This method of testing can filter out light guide plate effectively at the product that may come into question after life-time service.
Description
Technical field
The present invention relates to a kind of method of testing, particularly relate to a kind of light guide plate torsional test method.
Background technology
Light guide plate is widely used in the field such as back light model setting technology and Illuminative for sign.Its principle is to utilize optical grade
Acryl/PC sheet material, then with having the hitech materials of high reflectance and not extinction, in optical grade pressure gram
Power sheet material bottom surface UV screen printing technology stamps guide-lighting site.Utilize optical grade acryl sheet material draw from
The light that lamp issues is in the stop of optical grade acryl plate surface, when light is mapped to each light guiding points, instead
Penetrate light to spread toward all angles, then destroy conditioned reflex and penetrated by light guide plate front.Light guide plate is by line
Light source is changed into the high-tech product of area source, because of its different manufacturers different process, the most variant in quality.
But the detection method of existing light guide plate quality remain in guide-lighting site whether have stain, leak source,
Shortcoming, area source the most uniformly waits in the detection aspect of basis.Light guide plate after prolonged application, is by industry
The no light guide plate intensity deficiency that there will be causes light guide plate cracking, deformation etc. extremely to cause light guide plate light guide effect to become
Become, the uniformity of area source cannot meet use requirement, does not but have effective method of testing, it is impossible to verify
Light guide plate quality after life-time service.
Summary of the invention
It is an object of the invention to provide one and can test out light guide plate after life-time service, in fact it could happen that
Deformation, the light guide plate torsional test method of distortion problem.
In order to solve above-mentioned technical problem, the invention provides a kind of light guide plate torsional test method, the method
Comprise the following steps:
One light guide plate is provided；
Check that described light guide plate is the most normal, when described light guide plate is cracking, deform or surface is uneven
During unusual condition, it is determined that described light guide plate is abnormal, and record；
Described light guide plate is cut into preset area；
Described light guide plate is carried out deflection test, it is thus achieved that the theory deformation amount of described light guide plate, described theory
Deflection is the peak height of described light guide plate；
Thering is provided two fixtures, the two ends that fixture described in two is respectively used to described light guide plate is relative apply in opposite direction
External force；
Two ends relative for described light guide plate are folded in fixture described in two respectively, make described light guide plate be formed pre-
If twisted state, keep the first Preset Time；
Described light guide plate is taken out from fixture described in two, under room temperature, described light guide plate standing at least the second is preset
Time；
Described light guide plate is carried out deflection test, it is thus achieved that the practical distortion amount of described light guide plate, described reality
Deflection is the peak height of described light guide plate；
When described light guide plate is normal, obtain the difference between described practical distortion amount and described theory deformation amount,
When described difference is in preset range, it is determined that torsional rigidity and the antitorque toughness of described light guide plate can meet length
Phase uses requirement.
Wherein, in the step of described offer one light guide plate, the material of described light guide plate is acrylic.
Wherein, whether normal at the described light guide plate of described inspection, when described light guide plate is cracking, deformation or
During the uneven unusual condition in surface, it is determined that described light guide plate is abnormal, and in the step of record, by described
Light guide plate is placed in the environment that illumination is 200 lumens inspection.
Wherein, described, described light guide plate is cut in the step of preset area, by described light guide plate cutting
Become square, and described preset area is 100mm2。
Wherein, at described offer two fixture, fixture described in two is respectively used to the two ends relative to described light guide plate
Applying in the step of external force in opposite direction, the face that described fixture contacts with described light guide plate is provided with bolster,
Described bolster is used for preventing described light guide plate impaired.
Wherein, described bolster is plastic pad.
Wherein, described first Preset Time is 1 hour.
Wherein, described second Preset Time is 2 hours.
Wherein, the preset range of described difference is-1～1mm.
The light guide plate torsional test method that the present invention provides can test out used light guide plate to be made through for a long time
With rear, the problem such as deformation that light guide plate is likely to occur, distortion, select after life-time service for product development
The light guide plate occurring without the problems such as deformation, distortion provides foundation, makes the product can be after life-time service, still
Having higher quality level, meet the demand of client's life-time service, be also advantageous for improving product can simultaneously
By degree, produce the product being available for client's life-time service reliably.
Accompanying drawing explanation
In order to be illustrated more clearly that technical scheme, below by use required in embodiment
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Mode, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the light guide plate torsional test method that the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is entered
Row clearly and completely describes.
Refer to Fig. 1, a kind of light guide plate torsional test method that embodiment of the present invention provides.The method includes
Following steps:
Step 101 a: light guide plate is provided.In present embodiment, owing to the light guide plate of acrylic material is in application
In the most extensive, for more practical significance, the material of described light guide plate is acrylic.Certainly, real at other
Executing in example, the material of described light guide plate can also be Merlon (pc).
Step 103: check that described light guide plate is whether normal, when described light guide plate is cracking, deformation or surface
During uneven unusual condition, it is determined that described light guide plate is abnormal, and record.In the present embodiment mode, will
Described light guide plate is placed on the environment that illumination is 200 lumens, visually inspects whether described light guide plate has cracking, change
The uneven unusual condition of shape or surface, and record.This step is used for carrying out Ordinary fruit quality inspection, confirms institute
State situation before light guide plate test, it is ensured that test validity.
Step 105: described light guide plate is cut into preset area.This step is for cutting out described light guide plate
Cut.Described preset area determines according to the actual application of described light guide plate.In present embodiment, described default
Area is 100mm2Square.
Step 107: described light guide plate is carried out deflection test, it is thus achieved that the theory deformation amount of described light guide plate.
In present embodiment, described light guide plate is lain in and in marble platform, carries out light conducting board from deformation measurement examination, survey
Try the peak height of described light guide plate, it is thus achieved that theory deformation amount 0.1mm of described light guide plate.
Step 109: provide two fixtures, the two ends that fixture described in two is respectively used to described light guide plate is relative apply
External force in opposite direction.In present embodiment, described fixture includes the first clamping plate and the second clamping plate, described
The two ends of second splint are connected by screw respectively on the two ends of described first clamping plate, when described light guide plate to press from both sides
Tight in described fixture time, unclamp described screw, described light guide plate one end be placed in described first clamping plate and the
Between second splint, tighten described screw so that described light guide plate is clamped in described first clamping plate and described second
Between clamping plate.
Step 111: be folded in respectively in fixture described in two at two ends relative for described light guide plate, makes described leaded light
Plate forms default twisted state, keeps the first Preset Time.This step is buckling for described light guide plate
Can test, the test of described torsional resistance includes warping rigidity and distortion toughness test.Described first when presetting
Between determine according to the preset area of described light guide plate.In present embodiment, described first Preset Time is 1
Hour.Make fixture described in be fixed on along vertical direction at described marble platform 80mm, make another
Fixture described in one is fixed on along vertical direction at described marble platform 90mm, i.e. clamps described in two
Stepped, one on the other, and between be provided with spacing, this is smaller than 100mm, by described light guide plate one
End is folded in fixture described in, and the other end that described light guide plate is relative is folded in another described fixture, shape
Become a twisted state.The face that described fixture contacts with described light guide plate is provided with bolster, and described bolster is used
In preventing, described light guide plate is impaired.Specifically, this bolster is plastic pad.Certainly, in other embodiments,
Described bolster can also be other materials, such as rubber blanket.
Step 113: taken out from fixture described in two by described light guide plate, stands described light guide plate at least under room temperature
Second Preset Time.In present embodiment, described second Preset Time is 2 hours.
Step 115: described light guide plate is carried out deflection test, it is thus achieved that the practical distortion amount of described light guide plate.
In present embodiment, described light guide plate is lain in and in marble platform, carries out light conducting board from deformation measurement examination, survey
Try the peak height of described light guide plate, it is thus achieved that theory deformation amount 0.6mm of described light guide plate.
Step 117: when described light guide plate is normal, obtain described second deflection and described first deflection it
Between difference, when described difference is in preset range, it is determined that the torsional rigidity of described light guide plate and antitorque toughness
Life-time service requirement can be met.Whether this step conforms to for the torsional resistance testing described light guide plate
Ask.Described difference range rule of thumb depending on.In present embodiment, at the environment that illumination is 200 lumens,
Visually inspect that described light guide plate is the most cracking, the uneven unusual condition of deformation or surface, and record.
This step is for checking the accordance of light guide plate through light guide plate torsional resistance after testing.If it is normal, then
Obtaining the difference between described second deflection and described first deflection, concrete, this difference is 0.5mm,
Described difference range is-1～1mm, and this difference judges that the torsional rigidity of described light guide plate and antitorque toughness are permissible
Meet life-time service requirement.If cracking, the uneven unusual condition of deformation or surface, then reply is described
Light guide plate carries out torsional rigidity and the change in design of antitorque toughness, and after correcting this defect, then carry out described
Light guide plate torsional test method so that the product requirement of potential light guide plate torsional resistance existing defects is designed
Department rectifies and improves, it is ensured that described light guide plate torsional resistance can meet life-time service requirement.
The light guide plate torsional test method that the present invention provides can test out used light guide plate to be made through for a long time
With rear, the problem such as deformation that light guide plate is likely to occur, distortion, select after life-time service for product development
The light guide plate occurring without the problems such as deformation, distortion provides foundation, makes the product can be after life-time service, still
Having higher quality level, meet the demand of client's life-time service, be also advantageous for improving product can simultaneously
By degree, produce the product being available for client's life-time service reliably.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a light guide plate torsional test method, it is characterised in that the method comprises the following steps:
One light guide plate is provided；
Check that described light guide plate is the most normal, when described light guide plate is cracking, deform or surface is uneven
During unusual condition, it is determined that described light guide plate is abnormal, and record；
Described light guide plate is cut into preset area；
Described light guide plate is carried out deflection test, it is thus achieved that the theory deformation amount of described light guide plate, described theory
Deflection is the peak height of described light guide plate；
Thering is provided two fixtures, the two ends that fixture described in two is respectively used to described light guide plate is relative apply in opposite direction
External force；
Two ends relative for described light guide plate are folded in fixture described in two respectively, make described light guide plate be formed pre-
If twisted state, keep the first Preset Time；
Described light guide plate is taken out from fixture described in two, under room temperature, described light guide plate standing at least the second is preset
Time；
Described light guide plate is carried out deflection test, it is thus achieved that the practical distortion amount of described light guide plate, described reality
Deflection is the peak height of described light guide plate；
When described light guide plate is normal, obtain the difference between described practical distortion amount and described theory deformation amount,
When described difference is in preset range, it is determined that torsional rigidity and the antitorque toughness of described light guide plate can meet length
Phase uses requirement.
Light guide plate torsional test method the most according to claim 1, it is characterised in that in described offer
In the step of one light guide plate, the material of described light guide plate is acrylic.
Light guide plate torsional test method the most according to claim 1, it is characterised in that in described inspection
Whether described light guide plate is normal, when described light guide plate is cracking, the uneven unusual condition of deformation or surface
Time, it is determined that described light guide plate is abnormal, and in the step of record, it is 200 that described light guide plate is placed in illumination
The environment of lumen checks.
Light guide plate torsional test method the most according to claim 1, it is characterised in that described by institute
State light guide plate to be cut in the step of preset area, described light guide plate is cut into square, and described default
Area is 100mm2。
Light guide plate torsional test method the most according to claim 1, it is characterised in that in described offer
Two fixtures, the two ends that fixture described in two is respectively used to described light guide plate is relative apply external force in opposite direction
In step, the face that described fixture contacts with described light guide plate is provided with bolster, and described bolster is used for preventing
Described light guide plate is impaired.
Light guide plate torsional test method the most according to claim 5, it is characterised in that described bolster
For plastic pad.
Light guide plate torsional test method the most according to claim 5, it is characterised in that described bolster
For rubber blanket.
Light guide plate torsional test method the most according to claim 1, it is characterised in that described first pre-
If the time is 1 hour.
Light guide plate torsional test method the most according to claim 1, it is characterised in that described second pre-
If the time is 2 hours.
Light guide plate torsional test method the most according to claim 1, it is characterised in that described difference
Preset range is-1～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174230.5A CN104155192B (en) | 2013-05-13 | 2013-05-13 | Light guide plate torsional test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174230.5A CN104155192B (en) | 2013-05-13 | 2013-05-13 | Light guide plate torsional test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104155192A CN104155192A (en) | 2014-11-19 |
| CN104155192B true CN104155192B (en) | 2016-12-07 |
Family
ID=51880753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310174230.5A Expired - Fee Related CN104155192B (en) | 2013-05-13 | 2013-05-13 | Light guide plate torsional test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104155192B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551387B (en) * | 2020-05-27 | 2021-11-12 | 海信视像科技股份有限公司 | Clamp for measuring torsion resistance of complete television |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104258Y (en) * | 2007-05-31 | 2008-08-20 | 卡非科技股份有限公司 | Planeness testing apparatus of light conducting plate |
| CN201707271U (en) * | 2010-05-31 | 2011-01-12 | 宜特科技(昆山)电子有限公司 | PCB bending testing device |
| CN202720194U (en) * | 2012-05-31 | 2013-02-06 | 苏州市昶锦光电有限公司 | Light guide plate (LGP) detection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06337213A (en) * | 1993-05-28 | 1994-12-06 | Tanaka Kikinzoku Kogyo Kk | Measuring method for area of dot printing pattern of light guide plate |
| KR101708479B1 (en) * | 2009-12-31 | 2017-03-09 | 삼성디스플레이 주식회사 | Light guide panel, display device having the same, and fabrication method of the light guide panel |
| JP5455076B2 (en) * | 2011-09-19 | 2014-03-26 | ユアサシステム機器株式会社 | Planar torsion testing device |
-
2013
- 2013-05-13 CN CN201310174230.5A patent/CN104155192B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104258Y (en) * | 2007-05-31 | 2008-08-20 | 卡非科技股份有限公司 | Planeness testing apparatus of light conducting plate |
| CN201707271U (en) * | 2010-05-31 | 2011-01-12 | 宜特科技(昆山)电子有限公司 | PCB bending testing device |
| CN202720194U (en) * | 2012-05-31 | 2013-02-06 | 苏州市昶锦光电有限公司 | Light guide plate (LGP) detection device |
Non-Patent Citations (3)
| Title |
|---|
| Diffraction characteristics of a submicrometer grating for a light guide plate;Y. Ye et al.;《Applied Optics》;20070610;第46卷(第17期);第3396－3399页 * |
| 微特征结构对导光板翘曲变形的影响;蒋炳炎 等;《光学 精密工程》;20070228;第15卷(第2期);第180－185页 * |
| 注射工艺参数对超薄导光板翘曲影响的模拟;董鹏伟 等;《塑料》;20121231;第41卷(第1期);第98－100页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104155192A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5057491B2 (en) | Mask defect inspection system | |
| CN205749250U (en) | Curved surface outward appearance detection light-source system | |
| TW200734630A (en) | Defect inspection apparatus and defect inspection method | |
| CN104155192B (en) | Light guide plate torsional test method | |
| CN105092209A (en) | Bright spot detection equipment and method for filtering foreign matter noise | |
| CN211601864U (en) | Crankshaft threaded hole position degree checking fixture | |
| CN104483319A (en) | A sandwich biscuit defect detecting device and a method | |
| CN104056881A (en) | Metal plate bending device | |
| CN106345708B (en) | Polarisation film detection apparatus | |
| CN208537882U (en) | Bar shaped combined light source | |
| CN204503828U (en) | A kind of shape tube radian detects frock | |
| CN208780636U (en) | It is die cut membrane material quality inspection lamp case | |
| CN204735453U (en) | Two hole size automatic separation devices of chain link joint | |
| CN208537879U (en) | Corner coaxial light source | |
| CN208635683U (en) | A kind of tubular blank detection device | |
| CN207267139U (en) | Adjustable prefabricated group of split flange is to platform | |
| CN208795479U (en) | A kind of intensity detecting device of train components | |
| CN208334229U (en) | Printed IC board detection system | |
| CN203605934U (en) | Flat TV pedestal bottom plate angle detection tool | |
| CN210154517U (en) | Steel machined part detection equipment | |
| CN205487264U (en) | A platform device for detecting display screen panel quality | |
| TWI221520B (en) | Glass substrate inspection apparatus and its method | |
| CN209028004U (en) | A kind of simple diaphragm printing inspection fixture | |
| CN211697890U (en) | SMT real dress inspection auxiliary tool | |
| CN214702110U (en) | Quick bending degree checking tool for dimming screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |