CN103021281A - Light-emitting diode (LED) display - Google Patents
Light-emitting diode (LED) display Download PDFInfo
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- CN103021281A CN103021281A CN2011103050386A CN201110305038A CN103021281A CN 103021281 A CN103021281 A CN 103021281A CN 2011103050386 A CN2011103050386 A CN 2011103050386A CN 201110305038 A CN201110305038 A CN 201110305038A CN 103021281 A CN103021281 A CN 103021281A
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- light
- emitting diode
- led
- shadow shield
- diode display
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Abstract
The invention provides a light-emitting diode (LED) display with higher brightness and uniform chromaticity. The display comprises a shading plate for LEDs. The shading plate is made of a shading material for the LEDs. According to the LED display provided by the invention, the shading material for the LEDs comprises polyphenylene oxide (PPO) and titanium dioxide (TiO2), wherein relative to PPO of 100 parts by weight, the content of TiO2 is 15-20 parts by weight. According to the LED display provided by the invention, even if the wall thickness of the shading plate for LEDs is reduced to 0.3mm, the LED display with the higher brightness and the uniform chromaticity also can be obtained, and therefore, the requirement of the surface mounting LED technology on the design is met.
Description
Technical field
The present invention relates to a kind of light-emitting diode display, relate in particular to a kind of have higher brightness and the uniform light-emitting diode display of colourity.
Background technology
The advantages such as light-emitting diode display is the display device that a kind of display mode by the control semiconductor light-emitting-diode is come the various information such as display text, figure, image, and it has the brightness height, power consumption is little, operating voltage is low, bright in luster.In recent years, light-emitting diode display is widely used in various consumer electronics products and the Automation Control Instruments.
In the various application of light-emitting diode display, people wish that light-emitting diode display has higher brightness and more uniform colourity, and the shaded effect of the shadow shield in the light-emitting diode display directly affects brightness and the colourity of light-emitting diode display.For obtaining to have higher brightness, the uniform light-emitting diode display of colourity, need its shadow shield to have higher shaded effect.And the shaded effect of shadow shield depends on its material and wall thickness (i.e. minor increment between two adjacent light holes).At present, polyphenylene oxide (PPO) is widely used as making the light screening material of LED usefulness shadow shield because of its higher light-proofness and deformation resistance, polyphenylene oxide (PPO) can satisfy the shading requirement of light-emitting diode display when the wall thickness of shadow shield is enough thick, thereby obtains light-emitting diode display with higher brightness and even color.
Along with the high speed development of high-density printed circuit board and large scale integrated circuit technology, surface mounting technology can improve the parts integrated level, improve the advantages such as transmission speed and replace just rapidly in the manufacturing that conventional art is widely used in light-emitting diode display because of it.When adopting surface mounting technology to make light-emitting diode display, people wish to arrange as much as possible larger LED with the reduction cost on the printed circuit board (PCB) that limits size, and this will certainly reduce the minor increment between the adjacent LED.Correspondingly, cooperate the wall thickness of the shadow shield of component also must reduce as LED.In the LED situation less with the wall thickness of shadow shield, traditional shadow shield of being made by polyphenylene oxide (PPO) can not satisfy the shading requirement of light-emitting diode display, thus the light-emitting diode display that can not obtain to have higher brightness and even color.Therefore, need the new light screening material of exploitation when LED has less wall thickness with shadow shield, also can obtain to have the light-emitting diode display of higher brightness and even color.
Summary of the invention
The object of the present invention is to provide a kind of new light-emitting diode display, even this display hour also has higher brightness and uniformity of chromaticity at LED with the wall thickness of shadow shield (i.e. minor increment between two adjacent light holes).
Light-emitting diode display according to the present invention comprises the LED shadow shield of being made with light screening material by LED.LED among the present invention comprises polyphenylene oxide (PPO) and TiO with light screening material
2, wherein, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.
Further, light screening material according to the present invention is by polyphenylene oxide (PPO) and TiO
2Form, wherein, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.
Light screening material of the present invention has preferably light-proofness and intensity, and light screening material according to the present invention is applicable to make the LED shadow shield.
TiO among the present invention
2Content be preferably 20 mass parts, at this moment, it is best that the light-proofness of light screening material reaches, and it has preferably intensity.
Light screening material of the present invention can optionally comprise other various adjuvants such as filler, antioxidant, processing aid etc.
The present invention is by using above-mentioned light screening material to make to have higher light-proofness, uniformity of chromaticity and the LED shadow shield of intensity preferably.The present invention uses used in sunshade board in light-emitting diode display by the LED that above-mentioned light screening material is made, and has obtained the new light-emitting diode display with higher brightness and even color.According to the present invention, even little during to 0.3mm with the wall thickness of shadow shield at LED, also can obtain to have the light-emitting diode display of higher brightness and even color, thereby satisfy surface mount LED technology needs in design.
Embodiment
For understanding better the present invention, the present invention is described in detail below in conjunction with embodiment and embodiment, but the present invention is not limited to this.
In an embodiment of the invention, light screening material of the present invention comprises polyphenylene oxide (PPO) and TiO
2, wherein, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.TiO among the present invention
2Content be preferably 20 mass parts, at this moment, it is best that the light-proofness of light screening material reaches, and it has preferably intensity.If the TiO in the light screening material
2Content be lower than 15 mass parts, the shaded effect of light screening material can be subject to the impact of the colourity of LED own and brightness so, the minor increment between adjacent LED hour uses that this light screening material can not obtain to have higher brightness, the uniform light-emitting diode display of colourity; If the TiO in the light screening material
2Content surpass 20 mass parts, the shaded effect of light screening material can be with TiO so
2Content increase and further improve, on the contrary, the intensity of light screening material trends towards variation, produces easily the problem of embrittlement.
In another embodiment of the present invention, light screening material of the present invention is by polyphenylene oxide (PPO) and TiO
2Form, wherein, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.At this moment, light screening material has preferably light-proofness and intensity.
In another embodiment of the present invention, light screening material of the present invention also can optionally comprise other various adjuvants such as filler, antioxidant, processing aid etc.
Filler among the present invention can use barium sulphate master batch, zirconium dioxide etc., and above-mentioned filler can be used singly or in combination.The barium sulphate master batch that uses among the present invention is the AE-250 of Sony Corporation, and zirconium dioxide is the zirconium dioxide (purity is 99.9%) that Hangzhou red-spotted stonecrop nanosecond science and technology company limited produces, and the addition of filler is preferably below 5 mass parts.By adding filler, can improve intensity and the processing stability of the light screening material among the present invention.
Antioxidant among the present invention can use phenolic antioxidant, phosphite ester kind antioxidant, amine antioxidants etc., and above-mentioned antioxidant can be used singly or in combination.The addition of antioxidant is preferably below 2 mass parts.By adding antioxidant, can improve light, the thermal stability of the light screening material among the present invention.
Processing aid among the present invention can use EBS (N, N '-ethylene bis stearamide) etc., and the addition of processing aid is preferably below 2 mass parts.By adding processing aid, can reduce the wearing and tearing of process equipment, and can make product have good outward appearance and gloss.
Embodiment 1
At first, in stirring machine, add the polyphenylene oxide powder of 100 mass parts and the TiO of 15 mass parts
2Powder, and mix and blend 8-10 minute; Then carry out extruding pelletization with double screw extrusion machine, processing temperature is: 280 ℃; Above-mentioned materiel machining being become wall thickness at last is the shadow shield of 0.3mm, and with this shadow shield and shape with it the corresponding LED that is mounted on the substrate combine, to form light-emitting diode display.
Embodiment 2
Adopt the method manufacturing light-emitting diode display identical with embodiment 1, difference is TiO
2Content change 18 mass parts into.
Embodiment 3
Adopt the method manufacturing light-emitting diode display identical with embodiment 1, difference is TiO
2Content change 20 mass parts into.
Embodiment 4
Adopt the method manufacturing light-emitting diode display identical with embodiment 1, difference is that the wall thickness of shadow shield changes 0.5mm into.
Reference examples 1
At first, add the polyphenylene oxide powder of 100 mass parts and stirring 8-10 minute in the stirring machine; Then carry out extruding pelletization with double screw extrusion machine, processing temperature is: 280 ℃; Above-mentioned materiel machining being become wall thickness at last is the shadow shield of 0.3mm, and with this shadow shield and shape with it the corresponding LED that is mounted on the substrate combine, to form light-emitting diode display.
Reference examples 2
Adopt the method manufacturing light-emitting diode display identical with reference examples 1, difference is that the wall thickness of shadow shield changes 0.5mm into.
Reference examples 3
Adopt the method manufacturing light-emitting diode display identical with embodiment 1, difference is TiO
2Content be 14 mass parts.
Reference examples 4
Adopt the method manufacturing light-emitting diode display identical with embodiment 1, difference is TiO
2Content be 21 mass parts.
Light-emitting diode display among embodiment 1-4 and the reference examples 1-4 is carried out the Performance Detection of obscurity (being the obscurity of its shadow shield), uniformity of chromaticity and intensity, and the result as shown in Table 1 and Table 2.
Table 1
| Form (mass percent) | Embodiment 1 | Embodiment 4 | Reference examples 1 | Reference examples 2 |
| Polyphenylene oxide | 100 | 100 | 100 | 100 |
| TiO 2 | 15 | 15 | 0 | 0 |
| The wall thickness of shadow shield (mm) | 0.3 | 0.5 | 0.3 | 0.5 |
| Obscurity (%) | 95.8 | 96 | 88.3 | 81.5 |
| Uniformity of chromaticity | Better | Better | Relatively poor | Relatively poor |
| Pulling strengrth (MPa) | 55.4 | 55.4 | 57.9 | 57.9 |
| Bending strength | 90 | 90 | 96.1 | 96.1 |
Table 1 shows: little during to 0.5mm at the wall thickness of shadow shield, the shadow shield of only being made by polyphenylene oxide in the reference examples 2 has relatively poor light-proofness, and when the wall thickness of shadow shield further is reduced to 0.3mm, the further variation of its light-proofness.The shadow shield that also is visually observed in addition among the reference examples 1-2 has relatively poor uniformity of chromaticity.1-2 compares with reference examples, has added 15 mass parts TiO
2Embodiments of the invention then when the wall thickness of shadow shield is 0.5mm, have higher light-proofness, and still has preferably light-proofness during to 0.3mm in that the wall thickness of shadow shield is little, and they all demonstrate preferably uniformity of chromaticity, in addition, the intensity of the shadow shield in the embodiments of the invention 1 and 4 also can satisfy light-emitting diode display to the requirement of strength of shadow shield.
Table 2
| Form (mass percent) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Reference examples 3 | Reference examples 4 |
| Polyphenylene oxide | 100 | 100 | 100 | 100 | 100 |
| TiO 2 | 15 | 18 | 20 | 14 | 21 |
| The wall thickness of shadow shield (mm) | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Obscurity (%) | 95.8 | 96.5 | 96.9 | 94.7 | 96.9 |
| Uniformity of chromaticity | Better | Better | Better | Relatively poor | Better |
| Pulling strengrth (MPa) | 55.4 | 53.9 | 52.6 | 55.2 | 48.7 |
| Bending strength (MPa) | 90 | 85 | 80 | 95 | 75 |
As shown in Table 2, little during to 0.3mm at the wall thickness of shadow shield, at TiO
2Content be among the embodiment 1-3 of 15-20 mass parts, its shadow shield still has preferably light-proofness, uniformity of chromaticity and intensity, wherein TiO
2Content be that shadow shield among the embodiment 2 of 20 mass parts has best light-proofness.On the contrary, at TiO
2Content be lower than in the reference examples 3 of 15 mass parts, the light-proofness of its light screening material is relatively poor; At TiO
2Content surpass in the reference examples 4 of 20 mass parts, the light-proofness of its light screening material is not with TiO
2Content increase and increase, on the contrary, its intensity descends.
Polyphenylene oxide and the TiO of the present invention by being used in combination certain content
2Obtained to have the light screening material of higher light-proofness and better intensity, light screening material according to the present invention is applicable to make the LED shadow shield.The present invention uses used in sunshade board in light-emitting diode display by the LED that above-mentioned light screening material is made, and has obtained the new light-emitting diode display with higher brightness and even color.According to the present invention, even little during to 0.3mm with the wall thickness of shadow shield at LED, also can obtain to have the light-emitting diode display of higher brightness and even color, thereby satisfy surface mount LED technology needs in design.
Above embodiment only is used for explaining the present invention, but technical scheme of the present invention is not limited to above-described embodiment.Those skilled in the art all should think protection scope of the present invention from the various distortion that above-mentioned disclosure of the present invention can directly derive or associate.
Claims (5)
1. light-emitting diode display, it comprises the LED shadow shield, it is characterized in that, and described shadow shield is made with light screening material by LED, and described light screening material comprises polyphenylene oxide and TiO
2, wherein with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.
2. light-emitting diode display, it comprises the LED shadow shield, it is characterized in that, and described shadow shield is made with light screening material by LED, and described light screening material is by polyphenylene oxide and TiO
2Form, wherein, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be the 15-20 mass parts.
3. light-emitting diode display as claimed in claim 1 or 2 is characterized in that, with respect to the polyphenylene oxide of 100 mass parts, TiO
2Content be 20 mass parts.
4. light-emitting diode display as claimed in claim 1 or 2 is characterized in that, the wall thickness of described shadow shield is more than the 0.3mm.
5. light-emitting diode display as claimed in claim 3 is characterized in that, the wall thickness of described shadow shield is more than the 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103050386A CN103021281A (en) | 2011-09-23 | 2011-09-23 | Light-emitting diode (LED) display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103050386A CN103021281A (en) | 2011-09-23 | 2011-09-23 | Light-emitting diode (LED) display |
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|---|---|
| CN103021281A true CN103021281A (en) | 2013-04-03 |
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ID=47969830
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|---|---|---|---|
| CN2011103050386A Pending CN103021281A (en) | 2011-09-23 | 2011-09-23 | Light-emitting diode (LED) display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004340A (en) * | 2013-12-05 | 2014-08-27 | 惠州市昌亿新材料有限公司 | Aging-resistant high-performance and high-light-shielding-degree PPO (Polyphenylene Oxide) polymer, and preparing method and application of aging-resistant high-performance and high-light-shielding-degree PPO polymer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1946806A (en) * | 2004-04-26 | 2007-04-11 | 出光兴产株式会社 | Thermoplastic resin composition and article molded therefrom |
| US20070194715A1 (en) * | 2006-02-17 | 2007-08-23 | Jun-Kyu Cha | Film type filter and plasma display apparatus comprising the same |
| CN101195704A (en) * | 2007-09-30 | 2008-06-11 | 佛山市顺德区瑞能科技有限公司 | Polyphenylene oxide composition for LED display |
| CN101215417A (en) * | 2007-12-28 | 2008-07-09 | 深圳市科聚新材料有限公司 | Hexamethylene diamine adipate fibre-adding modified engineering plastics and preparation method thereof |
| CN201233695Y (en) * | 2008-07-31 | 2009-05-06 | 杭州威利广科技有限公司 | Light shielding cover used by indoor LED display screen |
| JP2010008786A (en) * | 2008-06-27 | 2010-01-14 | Sumitomo Metal Mining Co Ltd | Film-like shading plate, and diaphragm, light quantity adjusting diaphragm device or shutter using film-like shading plate |
| KR20100011259A (en) * | 2008-07-24 | 2010-02-03 | 주식회사 엘지화학 | Anti-glare coating composition and anti-glare coating film prepared by using the same |
| US20100269813A1 (en) * | 2007-12-10 | 2010-10-28 | Nippon Electric Glass Co., Ltd. | Top plate for cooking appliance |
| CN101885907A (en) * | 2010-07-09 | 2010-11-17 | 深圳市科聚新材料有限公司 | Polycarbonate modified material used in sunshade board of LED lamp and preparation method thereof |
-
2011
- 2011-09-23 CN CN2011103050386A patent/CN103021281A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1946806A (en) * | 2004-04-26 | 2007-04-11 | 出光兴产株式会社 | Thermoplastic resin composition and article molded therefrom |
| US20070194715A1 (en) * | 2006-02-17 | 2007-08-23 | Jun-Kyu Cha | Film type filter and plasma display apparatus comprising the same |
| CN101195704A (en) * | 2007-09-30 | 2008-06-11 | 佛山市顺德区瑞能科技有限公司 | Polyphenylene oxide composition for LED display |
| US20100269813A1 (en) * | 2007-12-10 | 2010-10-28 | Nippon Electric Glass Co., Ltd. | Top plate for cooking appliance |
| CN101215417A (en) * | 2007-12-28 | 2008-07-09 | 深圳市科聚新材料有限公司 | Hexamethylene diamine adipate fibre-adding modified engineering plastics and preparation method thereof |
| JP2010008786A (en) * | 2008-06-27 | 2010-01-14 | Sumitomo Metal Mining Co Ltd | Film-like shading plate, and diaphragm, light quantity adjusting diaphragm device or shutter using film-like shading plate |
| KR20100011259A (en) * | 2008-07-24 | 2010-02-03 | 주식회사 엘지화학 | Anti-glare coating composition and anti-glare coating film prepared by using the same |
| CN201233695Y (en) * | 2008-07-31 | 2009-05-06 | 杭州威利广科技有限公司 | Light shielding cover used by indoor LED display screen |
| CN101885907A (en) * | 2010-07-09 | 2010-11-17 | 深圳市科聚新材料有限公司 | Polycarbonate modified material used in sunshade board of LED lamp and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004340A (en) * | 2013-12-05 | 2014-08-27 | 惠州市昌亿新材料有限公司 | Aging-resistant high-performance and high-light-shielding-degree PPO (Polyphenylene Oxide) polymer, and preparing method and application of aging-resistant high-performance and high-light-shielding-degree PPO polymer |
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Application publication date: 20130403 |