Design of self-luminous pico-projection optical engine based on a quantum-dot color converted micro-LED - Details

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Abstract：

Micro-LED　will　probably　become　the　next　epochal　display　technology,　which　has　combined　the　advantages　of　liquid　crystal　display　(LCD)　and　organic　light-emitting　diode　(OLED).　Its　self-luminous　characteristic　will　greatly　compress　the　volume　of　the　projection　optical　engine　into　truly　pico-projection　level.　However,　the　relevant　design　and　research　are　still　insufficient.　In　this　paper,　we　design　a　four-piece　sphere　lens　group　with　a　5　mm　focal　length　for　micro-LED　pico-projection,　and　then　a　simulation　model　of　self-luminous　projection　optical　engine　is　built　for　demonstration.　The　total　length　of　the　projection　lens　group　is　only　8.2mm,　the　modulation　transfer　function　(MTF)　is　higher　than　0.5@66lp/mm,　and　the　distortion　is　below　1%.　The　irradiance　distribution　shows　that　the　light　efficiency　is　44.9　%　and　the　uniformity　reaches　81.3%　when　the　light　divergence　angle　of　micro-LEDs　is　set　to　30°.　Then,　we　explore　the　influence　on　light　efficiency　with　different　light　source　divergence　angles　and　determine　the　optimal　range　of　divergence　angles.　Finally,　a　R/G/B　integrated　micro-LED　source　with　blue　light　and　the　above　red/green　quantum-dot　color　conversion　(QDCC)　layer　is　built,　proving　the　feasibility　of　a　full-color　pico-projection　optical　engine　with　a　single-integrated　micro-LED　chip.　©　2022　SPIE.

Keyword：

Color Efficiency Engines Lenses Liquid crystal displays Liquid crystals Nanocrystals Optical design Organic light emitting diodes (OLED) Semiconductor quantum dots

Community：

[ 1 ] [Jiang, Haonan]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 2 ] [Jiang, Haonan]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 3 ] [Lin, Zibin]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 4 ] [Lin, Zibin]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 5 ] [Li, Yao]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 6 ] [Zhou, Ziping]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 7 ] [Chen, Enguo]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 8 ] [Chen, Enguo]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 9 ] [Chen, Enguo]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Province, Fuzhou; 350108, China
[ 10 ] [Xu, Sheng]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 11 ] [Xu, Sheng]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 12 ] [Xu, Sheng]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Province, Fuzhou; 350108, China
[ 13 ] [Ye, Yun]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 14 ] [Ye, Yun]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 15 ] [Ye, Yun]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Province, Fuzhou; 350108, China
[ 16 ] [Yan, Qun]School of Advanced Manufacturing, Fuzhou University, Fujian Province, Jinjiang; 362200, China
[ 17 ] [Yan, Qun]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 18 ] [Yan, Qun]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Province, Fuzhou; 350108, China
[ 19 ] [Guo, Tailiang]National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fujian Province, Fuzhou; 350108, China
[ 20 ] [Guo, Tailiang]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Province, Fuzhou; 350108, China