CN103364290A - Hardness testing method for mesh points of light guide plate - Google Patents
Hardness testing method for mesh points of light guide plate Download PDFInfo
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- CN103364290A CN103364290A CN2012100952585A CN201210095258A CN103364290A CN 103364290 A CN103364290 A CN 103364290A CN 2012100952585 A CN2012100952585 A CN 2012100952585A CN 201210095258 A CN201210095258 A CN 201210095258A CN 103364290 A CN103364290 A CN 103364290A
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Abstract
The invention discloses a hardness testing method for mesh points of a light guide plate. The method comprises the following steps: providing a light guide plate printed with mesh points; checking whether the mesh points of the light guide plate are normal; putting the light guide plate in an incubator, and holding the temperature for a first preset time at a preset temperature; taking out the light guide plate from the incubator, and standing for at least a second preset time at normal temperature to ensure that the mesh points of the light guide plate recover the normal mechanism; providing a testing tool the hardness of which is equal to the hardness of 1B to 3B pencil leads, and fixing one end of the testing tool and a thrust meter together; selecting a plurality of mesh points at the middle part of the light guide plate as test mesh points; propping the end away from the thrust meter of the testing tool against the test mesh points for multiple times, keeping the testing tool and the surface of the light guide plate to form a preset angle at each time, and keeping a preset thrust on the testing tool through the thrust meter; and checking whether the mesh points of the light guide plate are normal. The testing method can be used for testing the hardness of the light guide plate after long-time use and effectively screening the mesh points of the light guide plate tending to generate problems after long-time use.
Description
Technical field
The present invention relates to a kind of method of testing, relate in particular to a kind of light guide plate mesh point hardness measuring method.
Background technology
Light guide plate is widely used in the fields 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 high reflectivity and the hitech materials of extinction not, stamps the leaded light site in optical grade acryl sheet material bottom surface with the UV screen printing technology.The light that utilizes optical grade acryl sheet material to draw to send from lamp is in the stop on optical grade acryl sheet material surface, and when light was mapped to each light guiding points, reflected light can toward all angles diffusion, then destroy conditioned reflex and penetrate by light guide plate is positive.Light guide plate is the high-tech product that line source is changed into area source, and the leaded light site plays key effect in that line source is changed in the area source process.
Yet the detection method of existing light guide plate quality still rests on the leaded light site whether stain, leak source, shortcoming are arranged, whether area source evenly waits on the basic detection aspect.Whether industry, light guide plate can occur and cause the homogeneity of light guide plate light guide effect variation, area source can't satisfy request for utilization because site hardness deficiency causes that light guide plate mesh point comes off through after the prolonged application light guide plate mesh point, does not but have effective method of testing.
Summary of the invention
The object of the present invention is to provide a kind of light guide plate mesh point of can testing through the method for testing of hardness after the prolonged application.
In order to solve the problems of the technologies described above, the invention provides a kind of light guide plate mesh point hardness measuring method, the method may further comprise the steps:
Provide one to be printed on the light guide plate of site;
Check whether described light guide plate mesh point is normal;
Described light guide plate is placed in the incubator, be incubated the first Preset Time with preset temperature;
Described light guide plate is taken out from described incubator, leave standstill at least the second Preset Time under the normal temperature, the site of the guaranteeing described light guide plate mechanism that returns to normal;
The testing tool that provides a hardness to equal 1B to 3B pencil-lead hardness, described testing tool one end and thrust meter are fixed;
Choose a plurality of sites as the test site at described light guide plate middle part;
Described testing tool repeatedly abutted to away from an end of described thrust meter describedly respectively test the site, and keep the surface of described testing tool and described light guide plate to be a predetermined angle at every turn, described thrust meter keeps a default thrust to described testing tool;
Check whether described light guide plate mesh point is normal.
Wherein, whether in the normal step, described light guide plate is placed on the environment that illumination is 200 lumens at the described light guide plate mesh point of described inspection, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming, and record.
Wherein, described light guide plate is being placed in the incubator, the step that is incubated the first Preset Time with preset temperature is before further comprising the steps of:
A plurality of hard cushion blocks and 1 counterweight are provided;
Described light guide plate is cut into the specimen of preset area;
Be positioned in the described incubator described specimen is smooth, adopt described hard cushion block with bed hedgehopping around the described specimen, the site on the described specimen arranges down;
At the described counterweight of described specimen central authorities' placement.
Wherein, the quantity of described hard cushion block is 4, and the size of described hard cushion block is 10mm * 10mm * 10mm, and described hard cushion block is padded on four jiaos of described specimen; The thickness of described light guide plate is 6mm, and the quality of described counterweight is 50 grams, and the preset area of described specimen is 100mm * 100mm; Described preset temperature is 60 ℃, and described the first Preset Time is 240 hours.
Wherein, described described light guide plate is taken out from described incubator, leave standstill the second Preset Time under the normal temperature, the site of guaranteeing described light guide plate returns to normal in the step of mechanism, and the site of described light guide plate is arranged up, and described the second Preset Time is 2 hours.
Wherein, at the described testing tool that provides a hardness to equal 1B to 3B pencil-lead hardness, in the step that described testing tool one end and thrust meter are fixed, described testing tool is pencil, and described testing tool is the pen core that exposes a preset length away from an end of described thrust meter.
Wherein, described testing tool is the Pencil with 2B hardness of 50mm length, and described testing tool is the pen core that exposes 5mm length away from an end of described thrust meter.
Wherein, choose in the step of a plurality of sites as the test site at described light guide plate middle part, described test site comprises baseline network and expansion site, described baseline network comprises apart from a nearest site of centre position, 50mm place, four edges of described specimen, apart from a nearest site of described specimen middle, described expansion site comprises each described baseline network 4 nearest sites on every side.
Wherein, described testing tool is repeatedly being abutted to the described site of respectively testing away from an end of described thrust meter, and the surface that at every turn keeps described testing tool and described light guide plate is a predetermined angle, described thrust meter keeps in the step of a default thrust to described testing tool, described predetermined angle is 30-60 °, and described default thrust is 8-14 newton.
Wherein, whether in the normal step, be the environment of 200 lumens in illumination at the described light guide plate mesh point of described inspection, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming, and record.
Method of testing provided by the invention can test out the hardness of light guide plate after long-term the use, effectively filter out light guide plate mesh point and after through long-term the use, may produce variation, cause the defective products such as product leaded light rate variance, the light by light guide plate be inhomogeneous, select the high-quality light guide plate for product development foundation is provided, make the product can be after through long-term the use, still has higher quality level, satisfy the long-term demand of using of client, simultaneously also be of value to the fiduciary level that improves product, producing reliably can be for the long-term product of client.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the below will do to introduce simply to the accompanying drawing of required use in the embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of light guide plate mesh point hardness measuring method provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
See also Fig. 1, a kind of light guide plate mesh point hardness measuring method that embodiment of the present invention provides.The method may further comprise the steps:
Step 101: provide one to be printed on the light guide plate of site.In the present embodiment, the thickness of described light guide plate is 6mm.
Step 103: check whether described light guide plate mesh point is normal.In the present embodiment, described light guide plate is placed on the environment that illumination is 200 lumens, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming etc. unusual, and record.This step is used for carrying out the Ordinary fruit quality inspection, confirms that described light guide plate tests front site situation, warranty test validity.
Step 105: a plurality of hard cushion blocks and 1 counterweight are provided.In the present embodiment, the described hard cushion block that 4 steel are provided, the size of described hard cushion block is 10mm * 10mm * 10mm.Certainly, in other embodiments, can also provide 6 or 8 hard cushion blocks, but in order to prevent that the hard cushion block from improving the hardness of described light guide plate indirectly, is preferably 4.
Step 107: the specimen that described light guide plate is cut into preset area.In the present embodiment, the preset area of described specimen is 100mm * 100mm.In other embodiments, also can be with the light guide plate of small volume without cutting direct test.
Step 109: be positioned in the described incubator described specimen is smooth, adopt described hard cushion block with bed hedgehopping around the described specimen, the site on the described specimen arranges down.In the present embodiment, adopt 4 described hard cushion blocks to be padded on four jiaos of described specimen.
Step 111: at the described counterweight of described specimen central authorities' placement.In the present embodiment, the quality of described counterweight is 50 grams.Utilizing hard cushion block and counterweight in described step 105, step 109 and described step 111 is in order to test the higher light guide plate of requirement of strength.In other embodiments, described hard cushion block and counterweight also can omit.
Step 113: described specimen is placed in the incubator, be incubated the first Preset Time with preset temperature.This step is used for the use procedure of simulation light guide plate.Can adopt existing high temperature ageing test mode.Described preset temperature is determined according to described light guide plate temperature resistant grade.Described the first Preset Time is according to determining the serviceable life of light guide plate.In the present embodiment, described preset temperature is 60 ℃, and described the first Preset Time is 240 hours.
Step 115: described specimen is taken out from described incubator, leave standstill at least the second Preset Time under the normal temperature, the site of the guaranteeing described light guide plate mechanism that returns to normal.In the present embodiment, the site of described specimen is fixed on the test platform up, described the second Preset Time is 2 hours.Be used for guaranteeing the light guide plate mesh point mechanism that returns to normal in this step, convenient follow-up test.
Step 117: the testing tool that provides a hardness to equal 1B to 3B pencil-lead hardness, described testing tool one end and thrust meter are fixed.In the present embodiment, described testing tool is pencil, and described testing tool is the pen core that exposes a preset length away from an end of described thrust meter.For convenient test, described testing tool is the Pencil with 2B hardness of 50mm length, and described testing tool is the pen core that exposes 5mm length away from an end of described thrust meter.Certainly, in other embodiments, the pencil that described testing tool adopts can be other length also, and the length of exposing pen core also can be other length.
Step 119: choose a plurality of sites as the test site at described specimen middle part.In the present embodiment, described test site comprises baseline network and expansion site, and described baseline network comprises apart from a nearest site of centre position, 50mm place, four edges of described specimen, a distance nearest site of described specimen middle, totally 5.Described expansion site comprises each described baseline network 4 nearest sites on every side, totally 20.This step is used for the selection of clear and definite testing tool and test point position.
Step 121: described testing tool is repeatedly abutted to the described site of respectively testing away from an end of described thrust meter, and the surface that at every turn keeps described testing tool and described light guide plate is a predetermined angle, and described thrust meter keeps a default thrust to described testing tool.Described predetermined angle is 30-60 °, and described default thrust is 8-14 newton.Preferably, described predetermined angle is 45 °, and described default thrust is 10 newton.
Step 123: check whether described light guide plate mesh point is normal.In the present embodiment, be the environment of 200 lumens in illumination, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming etc. unusual, and record.This step is used for checking afterwards in test the accordance of light guide plate mesh point.If normal, think that the hardness of this light guide plate mesh point meets standard, if it is unusual stain, leak source or shortcoming etc. to occur, think that then the hardness of this light guide plate mesh point can't satisfy standard.
Method of testing provided by the invention can test out the hardness of light guide plate after long-term the use, effectively filter out light guide plate mesh point and after through long-term the use, may produce variation, cause the defective products such as product leaded light rate variance, the light by light guide plate be inhomogeneous, select the high-quality light guide plate for product development foundation is provided, make the product can be after through long-term the use, still has higher quality level, satisfy the long-term demand of using of client, simultaneously also be of value to the fiduciary level that improves product, producing reliably can be for the long-term product of client.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (10)
1. light guide plate mesh point hardness measuring method is characterized in that the method may further comprise the steps:
Provide one to be printed on the light guide plate of site;
Check whether described light guide plate mesh point is normal;
Described light guide plate is placed in the incubator, be incubated the first Preset Time with preset temperature;
Described light guide plate is taken out from described incubator, leave standstill at least the second Preset Time under the normal temperature, the site of the guaranteeing described light guide plate mechanism that returns to normal;
The testing tool that provides a hardness to equal 1B to 3B pencil-lead hardness, described testing tool one end and thrust meter are fixed;
Choose a plurality of sites as the test site at described light guide plate middle part;
Described testing tool repeatedly abutted to away from an end of described thrust meter describedly respectively test the site, and keep the surface of described testing tool and described light guide plate to be a predetermined angle at every turn, described thrust meter keeps a default thrust to described testing tool;
Check whether described light guide plate mesh point is normal.
2. light guide plate mesh point hardness measuring method according to claim 1, it is characterized in that, at the described light guide plate mesh point of described inspection whether in the normal step, described light guide plate is placed on the environment that illumination is 200 lumens, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming, and record.
3. light guide plate mesh point hardness measuring method according to claim 2 is characterized in that, described light guide plate is being placed in the incubator, and the step that is incubated the first Preset Time with preset temperature is before further comprising the steps of:
A plurality of hard cushion blocks and 1 counterweight are provided;
Described light guide plate is cut into the specimen of preset area;
Be positioned in the described incubator described specimen is smooth, adopt described hard cushion block with bed hedgehopping around the described specimen, the site on the described specimen arranges down;
At the described counterweight of described specimen central authorities' placement.
4. light guide plate mesh point hardness measuring method according to claim 3 is characterized in that, the quantity of described hard cushion block is 4, and the size of described hard cushion block is 10mm * 10mm * 10mm, and described hard cushion block is padded on four jiaos of described specimen; The thickness of described light guide plate is 6mm, and the quality of described counterweight is 50 grams, and the preset area of described specimen is 100mm * 100mm; Described preset temperature is 60 ℃, and described the first Preset Time is 240 hours.
5. light guide plate mesh point hardness measuring method according to claim 1, it is characterized in that, described described light guide plate is taken out from described incubator, leave standstill the second Preset Time under the normal temperature, the site of guaranteeing described light guide plate returns to normal in the step of mechanism, the site of described light guide plate is arranged up, and described the second Preset Time is 2 hours.
6. light guide plate mesh point hardness measuring method according to claim 1, it is characterized in that, at the described testing tool that provides a hardness to equal 1B to 3B pencil-lead hardness, in the step that described testing tool one end and thrust meter are fixed, described testing tool is pencil, and described testing tool is the pen core that exposes a preset length away from an end of described thrust meter.
7. light guide plate mesh point hardness measuring method according to claim 6 is characterized in that, described testing tool is the Pencil with 2B hardness of 50mm length, and described testing tool is the pen core that exposes 5mm length away from an end of described thrust meter.
8. light guide plate mesh point hardness measuring method according to claim 4, it is characterized in that, choose in the step of a plurality of sites as the test site at described light guide plate middle part, described test site comprises baseline network and expansion site, described baseline network comprises apart from a nearest site of centre position, 50mm place, four edges of described specimen, apart from a nearest site of described specimen middle, described expansion site comprises each described baseline network 4 nearest sites on every side.
9. light guide plate mesh point hardness measuring method according to claim 8, it is characterized in that, described testing tool is repeatedly being abutted to the described site of respectively testing away from an end of described thrust meter, and the surface that at every turn keeps described testing tool and described light guide plate is a predetermined angle, described thrust meter keeps in the step of a default thrust to described testing tool, described predetermined angle is 30-60 °, and described default thrust is 8-14 newton.
10. light guide plate mesh point hardness measuring method according to claim 9, whether it is characterized in that, in the normal step, be the environment of 200 lumens in illumination at the described light guide plate mesh point of described inspection, whether the described light guide plate mesh point of visual examination has stain, leak source or shortcoming, and record.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100952585A CN103364290A (en) | 2012-03-31 | 2012-03-31 | Hardness testing method for mesh points of light guide plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100952585A CN103364290A (en) | 2012-03-31 | 2012-03-31 | Hardness testing method for mesh points of light guide plate |
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| CN2012100952585A Pending CN103364290A (en) | 2012-03-31 | 2012-03-31 | Hardness testing method for mesh points of light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597586A (en) * | 2017-02-10 | 2017-04-26 | 中新科技集团股份有限公司 | Manufacturing method of liquid crystal display diffusion plate |
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| JPH0392745A (en) * | 1989-09-05 | 1991-04-17 | Nippon Steel Corp | Indentation type hardness meter |
| JPH09318517A (en) * | 1996-05-27 | 1997-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Coating film hardness measuring equipment |
| CN101153926A (en) * | 2007-07-23 | 2008-04-02 | 长兴光学材料（苏州）有限公司 | Optical thin film with resin coating containing narrow particle size distributed organic particle |
| CN102353518A (en) * | 2011-10-14 | 2012-02-15 | 苏州富鑫林光电科技有限公司 | Device and method for detecting quality of lattice point of printed light guide plate |
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| CN106597586A (en) * | 2017-02-10 | 2017-04-26 | 中新科技集团股份有限公司 | Manufacturing method of liquid crystal display diffusion plate |
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Application publication date: 20131023 |