{"corpus_id":35903279,"paper_sha":"e0fa5cf88a530a4f5bb588dd92922f0debd96fde","doi":"10.1364/OE.23.030701","arxiv_id":null,"pmid":26698702,"pmcid":null,"mag_id":2287811979,"dblp_id":null,"acl_id":null,"title":"Luminance uniformity study of OLED lighting panels depending on OLED device structures.","year":2015,"publication_date":"2015-11-30","venue":"Optics Express","journal":{"name":"Optics express","pages":"\n          30701-8\n        ","volume":"23 24"},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article"],"s2_fields_of_study":["Medicine","Materials Science","Physics","Engineering"],"reference_count":15,"citation_count":12,"influential_citation_count":0,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"This paper describes the luminance uniformity of OLED lighting panels depending on OLED device structures of single emission layer (single-EML), 2-tandem, and 3-tandem. The luminance distribution is evaluated through the circuit simulation and the fabricated panel measurement. In the simulation results with yellow-green color panels of 30 × 80 mm2 emission area, a 3-tandem structure shows the lowest non-uniformity (1.34% at 7.5V), compared to single-EML (5.67% at 2.8V) and 2-tandem (2.78% at 5.3 V) structures at 1,000 cd/m2. The luminance non-uniformity is germane to the OLED conductance showing that the high luminance-current efficiency is of the most importance to achieve the uniform voltage and luminance distribution. In measurement, a 3-tandem structure also achieves the most uniform luminance distribution with non-uniformity of 4.1% while single EML and 2-tandem structures accomplish 9.6%, and 6.4%, respectively, at ~1,000 cd/m2. In addition, the simulation results ensure that a 3-tandem structure panel is allowed to be enlarged the panel size up to about 5,000 mm2 for lower luminance non-uniformity than 10% without any auxiliary metal electrodes.","claims":[{"public_id":"cl_ad617660188c986f7ca3133fc4c0c901","status":"active","text":"A 3-tandem OLED structure yields the lowest luminance non-uniformity among the compared device structures in both simulation and measurement.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_ad617660188c986f7ca3133fc4c0c901"},{"public_id":"cl_4454c49d7203c12e0c99f8ad278cb4b5","status":"active","text":"A 3-tandem structure panel can be scaled to about 5,000 mm2 while keeping luminance non-uniformity below 10% without auxiliary metal electrodes.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_4454c49d7203c12e0c99f8ad278cb4b5"},{"public_id":"cl_ed4f3635a5e37adc5b0ae7c068ffc255","status":"active","text":"At 1,000 cd/m2 in simulation, the 3-tandem structure achieves 1.34% non-uniformity, compared with 2.78% for the 2-tandem structure and 5.67% for the single-EML structure.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_ed4f3635a5e37adc5b0ae7c068ffc255"},{"public_id":"cl_d1bd89323f25da847492e242712fc260","status":"active","text":"At approximately 1,000 cd/m2 in measurement, the 3-tandem structure achieves 4.1% non-uniformity, compared with 6.4% for the 2-tandem structure and 9.6% for the single-EML structure.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_d1bd89323f25da847492e242712fc260"},{"public_id":"cl_d28c9dcab1e5e17cec9748e581a45336","status":"active","text":"Higher luminance-current efficiency is identified as important for obtaining uniform voltage and luminance distribution through its relationship to OLED conductance.","confidence":0.9,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_d28c9dcab1e5e17cec9748e581a45336"}],"concepts":[{"public_id":"co_02e57a5b642c67aab9838e8339d4da67","status":"active","name":"luminance-current efficiency","description":"The efficiency relating luminance output to drive current in an OLED device.","types":["device 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