Using Self-Aligned Si Barrier to Enhance the Contrast Ratio and Performance of Pixelated Light Emitting Diode for Vehicle Headlamp
DC Field | Value | Language |
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dc.contributor.author | Lee, Sang-Youl | - |
dc.contributor.author | Kim, Doyub | - |
dc.contributor.author | Kang, Kiman | - |
dc.contributor.author | Lee, Eunduk | - |
dc.contributor.author | Jo, Yoomin | - |
dc.contributor.author | Jung, Se-Yeon | - |
dc.contributor.author | Oh, Jeong Tak | - |
dc.contributor.author | Jeong, Hwan-Hee | - |
dc.contributor.author | Seong, Tae-Yeon | - |
dc.date.accessioned | 2021-11-21T19:40:39Z | - |
dc.date.available | 2021-11-21T19:40:39Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-04-01 | - |
dc.identifier.issn | 2162-8769 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128270 | - |
dc.description.abstract | We investigate the effects of pixel distance and light emitting diode (LED) thickness on the luminance distribution and contrast ratio of a 16 x 16 blue and white LED array for vehicle headlamp application. With increasing pixel distance from 10 to 20 mu m, the contrast ratio increased from 33:1 to 51:1 for white LEDs and from 37:1 to 48:1 for blue LEDs. As the LED thickness decreased from 4.5 to 2.0 mu m, the contrast ratio increased from 37:1 to 62:1 for blue LEDs and from 33:1 to 97:1 for white LEDs. The blue LEDs fabricated with ultrathin-GaN and self-aligned Si barrier showed the contrast ratio of 48:1 and 39:1, respectively, while the white LEDs with ultrathin-GaN and self-aligned Si barrier yielded the contrast ratio of and 89:1 and 99:1. Further, LEDs with the self-aligned Si barrier had better luminance uniformity than those with the ultrathin-GaN. LED array with the self-aligned Si barrier exhibited narrower dark space than that with the ultrathin-GaN. At 60 mA, the LED with the self-aligned Si barrier gave 6% higher light output than that with the ultrathin-GaN. A headlamp unit using 16 x 16 LED array was demonstrated with the Si self-aligned barrier. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.title | Using Self-Aligned Si Barrier to Enhance the Contrast Ratio and Performance of Pixelated Light Emitting Diode for Vehicle Headlamp | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Seong, Tae-Yeon | - |
dc.identifier.doi | 10.1149/2162-8777/abf47d | - |
dc.identifier.scopusid | 2-s2.0-85104698112 | - |
dc.identifier.wosid | 000640495200001 | - |
dc.identifier.bibliographicCitation | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v.10, no.4 | - |
dc.relation.isPartOf | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | - |
dc.citation.title | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | - |
dc.citation.volume | 10 | - |
dc.citation.number | 4 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordAuthor | LED | - |
dc.subject.keywordAuthor | light emitting diode | - |
dc.subject.keywordAuthor | LED | - |
dc.subject.keywordAuthor | III-Nitrides | - |
dc.subject.keywordAuthor | LED array | - |
dc.subject.keywordAuthor | cross-talk | - |
dc.subject.keywordAuthor | headlamp | - |
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