{"id":12821,"date":"2023-08-30T07:08:15","date_gmt":"2023-08-30T07:08:15","guid":{"rendered":"https:\/\/www2.iled-lights.com\/?p=12821"},"modified":"2023-08-30T07:08:48","modified_gmt":"2023-08-30T07:08:48","slug":"what-is-led-its-features-and-its-history","status":"publish","type":"post","link":"https:\/\/www.iled-lights.com\/vi\/what-is-led-its-features-and-its-history-a11.html","title":{"rendered":"LED l\u00e0 g\u00ec, T\u00ednh n\u0103ng v\u00e0 L\u1ecbch s\u1eed c\u1ee7a n\u00f3"},"content":{"rendered":"

\u0110\u1ea7u ti\u00ean, ’<\/strong> Nguy\u00ean l\u00fd ph\u00e1t x\u1ea1 c\u1ea5u tr\u00fac LED t\u1eeb 50 n\u0103m tr\u01b0\u1edbc, m\u1ecdi ng\u01b0\u1eddi \u0111\u00e3 hi\u1ec3u ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 v\u1eadt li\u1ec7u b\u00e1n d\u1eabn c\u00f3 th\u1ec3 ph\u00e1t s\u00e1ng, b\u00f3ng b\u00e1n d\u1eabn th\u01b0\u01a1ng m\u1ea1i \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0o n\u0103m 1960. LED l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a light emitting diode (\u0111i\u1ed1t ph\u00e1t quang ti\u1ebfng Anh), c\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a n\u00f3 l\u00e0 v\u1eadt li\u1ec7u b\u00e1n d\u1eabn ph\u00e1t hu\u1ef3nh quang, \u0111\u1eb7t tr\u00ean gi\u00e1 \u0111\u1ee1 d\u00e2y, sau \u0111\u00f3 \u0111\u01b0\u1ee3c b\u1ecdc b\u1eb1ng nh\u1ef1a epoxy xung quanh, b\u1ea3o v\u1ec7 c\u00e1c \u0111\u01b0\u1eddng d\u00e2y h\u1ea1t b\u00ean trong, do \u0111\u00f3 hi\u1ec7u su\u1ea5t \u0111\u1ed9ng \u0111\u1ea5t c\u1ee7a LED’. C\u1ea5u tr\u00fac LED \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 sau m\u1ed9t ph\u1ea7n l\u00f5i c\u1ee7a \u0111i\u1ed1t ph\u00e1t quang \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb wafer b\u00e1n d\u1eabn lo\u1ea1i p v\u00e0 b\u00e1n d\u1eabn lo\u1ea1i n, v\u00e0 m\u1ed9t l\u1edbp chuy\u1ec3n ti\u1ebfp gi\u1eefa b\u00e1n d\u1eabn lo\u1ea1i p v\u00e0 b\u00e1n d\u1eabn lo\u1ea1i n, g\u1ecdi l\u00e0 ti\u1ebfp gi\u00e1p pn. Trong m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u b\u00e1n d\u1eabn, ti\u1ebfp gi\u00e1p PN, s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a c\u00e1c h\u1ea1t mang \u0111i\u1ec7n thi\u1ec3u s\u1ed1 v\u00e0 \u0111a s\u1ed1 t\u00e1i h\u1ee3p, khi \u0111\u00f3 n\u0103ng l\u01b0\u1ee3ng d\u01b0 th\u1eeba s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng d\u01b0\u1edbi d\u1ea1ng \u00e1nh s\u00e1ng, \u0111i\u1ec1u n\u00e0y chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng. \u00c1p \u0111\u1ea3o ng\u01b0\u1ee3c ti\u1ebfp gi\u00e1p PN, s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a c\u00e1c h\u1ea1t mang \u0111i\u1ec7n thi\u1ec3u s\u1ed1 l\u00e0 kh\u00f3 kh\u0103n, n\u00f3 kh\u00f4ng ph\u00e1t s\u00e1ng. Nguy\u00ean l\u00fd ph\u00e1t s\u00e1ng n\u00e0y l\u00e0m cho vi\u1ec7c s\u1eed d\u1ee5ng \u0111i\u1ed1t ph\u00e1t x\u1ea1 \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ed1t ph\u00e1t quang, g\u1ecdi t\u1eaft l\u00e0 LED. Khi n\u00f3 \u1edf tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng (t\u1ee9c l\u00e0 hai \u0111\u1ea7u c\u00f3 \u0111i\u1ec7n \u00e1p d\u01b0\u01a1ng), d\u00f2ng \u0111i\u1ec7n \u0111i t\u1eeb anode c\u1ee7a LED \u0111\u1ebfn cathode, tinh th\u1ec3 b\u00e1n d\u1eabn ph\u00e1t ra \u00e1nh s\u00e1ng m\u00e0u kh\u00e1c nhau t\u1eeb tia c\u1ef1c t\u00edm \u0111\u1ebfn tia h\u1ed3ng ngo\u1ea1i, c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng v\u00e0 d\u00f2ng \u0111i\u1ec7n. ’<\/p>\n

\"L\u1ecbch<\/p>\n

Th\u1ee9 hai, c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a ngu\u1ed3n s\u00e1ng LED<\/strong>
\n1 \u0110i\u1ec7n \u00e1p: Ngu\u1ed3n \u0111i\u1ec7n \u00e1p th\u1ea5p LED dao \u0111\u1ed9ng t\u1eeb 6-24V, t\u00f9y thu\u1ed9c v\u00e0o t\u1eebng s\u1ea3n ph\u1ea9m, do \u0111\u00f3 \u0111\u00e2y l\u00e0 ngu\u1ed3n \u0111i\u1ec7n an to\u00e0n h\u01a1n so v\u1edbi ngu\u1ed3n \u0111i\u1ec7n \u00e1p cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi \u00e1p d\u1ee5ng \u1edf c\u00e1c khu v\u1ef1c c\u00f4ng c\u1ed9ng.
\n2. Hi\u1ec7u su\u1ea5t: M\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng gi\u1ea3m 80% so v\u1edbi \u0111\u00e8n s\u1ee3i \u0111\u1ed1t c\u00f3 c\u00f9ng hi\u1ec7u su\u1ea5t chi\u1ebfu s\u00e1ng
\nT\u00ednh \u1ee9ng d\u1ee5ng: K\u00edch th\u01b0\u1edbc nh\u1ecf, m\u1ed7i chip LED ri\u00eang l\u1ebb ch\u1ec9 vu\u00f4ng 3-5mm, n\u00ean thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o v\u1edbi nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a d\u1ea1ng
\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh: 100.000 gi\u1edd, \u00e1nh s\u00e1ng ch\u1ec9 suy gi\u1ea3m 50% so v\u1edbi ban \u0111\u1ea7u
\n5 Th\u1eddi gian \u0111\u00e1p \u1ee9ng: \u0110\u00e8n s\u1ee3i \u0111\u1ed1t c\u00f3 th\u1eddi gian \u0111\u00e1p \u1ee9ng \u1edf mili-gi\u00e2y, trong khi \u0111\u00e8n LED c\u00f3 th\u1eddi gian \u0111\u00e1p \u1ee9ng \u1edf nano-gi\u00e2y
\n\u00d4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng: Kh\u00f4ng ch\u1ee9a th\u1ee7y ng\u00e2n, m\u1ed9t kim lo\u1ea1i c\u00f3 h\u1ea1i
\n7 M\u00e0u s\u1eafc: Vi\u1ec7c thay \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i m\u00e0u s\u1eafc c\u1ee7a LED b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p c\u1ea3i bi\u1ebfn h\u00f3a h\u1ecdc, \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac v\u00f9ng v\u00e0 kho\u1ea3ng c\u00e1ch v\u00f9ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt li\u1ec7u \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng m\u00e0u cam, \u0111\u1ecf, v\u00e0ng, l\u1ee5c, lam. \u1ede d\u00f2ng \u0111i\u1ec7n nh\u1ecf, LED ph\u00e1t ra m\u00e0u \u0111\u1ecf, khi t\u0103ng d\u00f2ng \u0111i\u1ec7n, m\u00e0u s\u1eafc c\u00f3 th\u1ec3 chuy\u1ec3n sang cam, v\u00e0ng v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 l\u1ee5c. 8 Gi\u00e1: Gi\u00e1 LED th\u01b0\u1eddng \u0111\u1eaft h\u01a1n \u0111\u00e8n s\u1ee3i \u0111\u1ed1t, gi\u00e1 c\u1ee7a m\u1ed9t v\u00e0i LED t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi gi\u00e1 m\u1ed9t \u0111\u00e8n s\u1ee3i \u0111\u1ed1t, v\u00e0 th\u01b0\u1eddng m\u1ed7i t\u00edn hi\u1ec7u cho c\u00e1c diode dao \u0111\u1ed9ng t\u1eeb 300 \u0111\u1ebfn 500.<\/p>\n

Th\u1ee9 ba, Ba lo\u1ea1i LED \u0111\u01a1n s\u1eafc v\u00e0 l\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u1ee7a ch\u00fang<\/strong>
\nL\u1ecbch s\u1eed \u1ee9ng d\u1ee5ng ban \u0111\u1ea7u c\u1ee7a ngu\u1ed3n s\u00e1ng LED, d\u1ef1a tr\u00ean nguy\u00ean l\u00fd ph\u00e1t s\u00e1ng c\u1ee7a ti\u1ebfp x\u00fac b\u00e1n d\u1eabn PN, ra \u0111\u1eddi v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1960. V\u1eadt li\u1ec7u s\u1eed d\u1ee5ng l\u00e0 GaAsP, ph\u00e1t ra m\u00e0u \u0111\u1ecf m\u1edd (\u03bbp = 650nm), \u1edf d\u00f2ng \u0111i\u1ec7n l\u00e0m vi\u1ec7c 20 mA, th\u00f4ng l\u01b0\u1ee3ng ph\u00e1t s\u00e1ng ch\u1ec9 c\u00f3 v\u00e0i ph\u1ea7n ngh\u00ecn lumen, hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng kho\u1ea3ng 0,1 lumen \/ watt. V\u00e0o gi\u1eefa nh\u1eefng n\u0103m 1970, v\u1edbi vi\u1ec7c \u0111\u01b0a v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 In v\u00e0 N, LED ph\u00e1t ra m\u00e0u l\u1ee5c (\u03bbp = 555nm), v\u00e0ng (\u03bbp = 590nm) v\u00e0 cam (\u03bbp = 610nm), hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng c\u0169ng \u0111\u01b0\u1ee3c t\u0103ng l\u00ean 1 lumen \/ watt. \u0110\u1ea7u nh\u1eefng n\u0103m 1980, ngu\u1ed3n s\u00e1ng LED GaAlAs \u0111\u00e3 l\u00e0m cho hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng c\u1ee7a \u0111\u00e8n LED m\u00e0u \u0111\u1ecf \u0111\u1ea1t 10 lumen \/ watt. \u0110\u1ea7u th\u1eadp ni\u00ean 1990, vi\u1ec7c ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng hai lo\u1ea1i v\u1eadt li\u1ec7u m\u1edbi l\u00e0 GaAlInP cho \u00e1nh s\u00e1ng \u0111\u1ecf-v\u00e0ng v\u00e0 GaInN cho m\u00e0u l\u1ee5c-xanh lam \u0111\u00e3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng c\u1ee7a LED. N\u0103m 2000, lo\u1ea1i LED tr\u01b0\u1edbc \u0111\u01b0\u1ee3c l\u00e0m cho v\u00f9ng \u0111\u1ecf, cam (\u03bbp = 615nm) c\u00f3 hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng 100 lm \/ W, trong khi lo\u1ea1i LED sau \u0111\u01b0\u1ee3c l\u00e0m cho v\u00f9ng l\u1ee5c (\u03bbp = 530nm) c\u00f3 th\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t 50 lm \/ watt.<\/p>\n

Th\u1ee9 t\u01b0, C\u00e1c \u1ee9ng d\u1ee5ng LED \u0111\u01a1n s\u1eafc<\/strong>
\nNgu\u1ed3n s\u00e1ng LED ch\u1ec9 b\u00e1o \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng, v\u00e0 sau \u0111\u00f3 l\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u00e8n giao th\u00f4ng LED c\u00f3 m\u00e0u nh\u1ea1t v\u00e0 m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb l\u1edbn, \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 t\u1ea1o ra l\u1ee3i \u00edch kinh t\u1ebf v\u00e0 x\u00e3 h\u1ed9i t\u1ed1t. V\u00ed d\u1ee5, \u0111\u00e8n giao th\u00f4ng m\u00e0u \u0111\u1ecf k\u00edch th\u01b0\u1edbc 12 inch \u1edf Hoa K\u1ef3 tr\u01b0\u1edbc \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 b\u00f3ng \u0111\u00e8n s\u1ee3i \u0111\u1ed1t 140-watt tu\u1ed5i th\u1ecd cao, hi\u1ec7u su\u1ea5t th\u1ea5p l\u00e0m ngu\u1ed3n s\u00e1ng, n\u00f3 t\u1ea1o ra 2000 lumen \u00e1nh s\u00e1ng tr\u1eafng. L\u1ecdc m\u00e0u \u0111\u1ecf, t\u1ed5n th\u1ea5t 90% \u00e1nh s\u00e1ng, ch\u1ec9 c\u00f2n 200 lumen \u00e1nh s\u00e1ng \u0111\u1ecf. Trong thi\u1ebft k\u1ebf m\u1edbi c\u1ee7a \u0111\u00e8n, Lumileds s\u1eed d\u1ee5ng 18 ngu\u1ed3n s\u00e1ng LED m\u00e0u \u0111\u1ecf, bao g\u1ed3m c\u1ea3 t\u1ed5n th\u1ea5t m\u1ea1ch, t\u1ed5ng c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 14 watt \u0111\u1ec3 t\u1ea1o ra hi\u1ec7u su\u1ea5t \u00e1nh s\u00e1ng nh\u01b0 nhau.
\n\u0110\u00e8n \u00f4 t\u00f4 c\u0169ng l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c quan tr\u1ecdng trong \u1ee9ng d\u1ee5ng ngu\u1ed3n s\u00e1ng LED. V\u00e0o n\u0103m 1987, Trung Qu\u1ed1c b\u1eaft \u0111\u1ea7u l\u1eafp \u0111\u1eb7t \u0111\u00e8n phanh xe h\u01a1i, nh\u1edd ph\u1ea3n \u1ee9ng nhanh c\u1ee7a LED (nano-gi\u00e2y), gi\u00fap ng\u01b0\u1eddi l\u00e1i xe ph\u00eda sau nh\u1eadn bi\u1ebft s\u1edbm t\u00ecnh tr\u1ea1ng giao th\u00f4ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u tai n\u1ea1n va ch\u1ea1m t\u1eeb ph\u00eda sau.
\nNgo\u00e0i ra, \u0111\u00e8n LED \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb m\u00e0u \u0111\u1ecf, xanh l\u00e1, xanh d\u01b0\u01a1ng \u0111\u1ea7y \u0111\u1ee7 m\u00e0u s\u1eafc ngo\u00e0i tr\u1eddi, \u0111\u00e8n pin mini, m\u00f3c kh\u00f3a v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c.<\/p>\n

Th\u1ee9 n\u0103m, S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a LED tr\u1eafng<\/strong><\/p>\n

Con ng\u01b0\u1eddi c\u1ea7n m\u1ed9t ngu\u1ed3n s\u00e1ng tr\u1eafng cho m\u1ee5c \u0111\u00edch chi\u1ebfu s\u00e1ng chung. Th\u00e0nh c\u00f4ng trong ph\u00e1t tri\u1ec3n LED tr\u1eafng n\u0103m 1998. LED n\u00e0y \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb chip GaN v\u00e0 garnet nh\u00f4m yttri (YAG) \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i c\u00f9ng nhau. Chip GaN ph\u00e1t ra \u00e1nh s\u00e1ng xanh (\u03bbp = 465nm, Wd = 30nm), nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u1edbi phosphor Ce3 + YAG b\u1ecb k\u00edch th\u00edch b\u1edfi \u00e1nh s\u00e1ng xanh ph\u00e1t ra \u00e1nh s\u00e1ng v\u00e0ng v\u00e0 \u0111\u1ec9nh ph\u00e1t s\u00e1ng \u1edf 550nm. \u0110\u1ec7m LED xanh \u0111\u01b0\u1ee3c l\u1eafp trong h\u1ed1c ph\u1ea3n x\u1ea1 h\u00ecnh b\u00e1t, ph\u1ee7 m\u1ed9t l\u1edbp m\u1ecfng nh\u1ef1a tr\u1ed9n v\u1edbi YAG, kho\u1ea3ng 200-500nm. Tia xanh d\u01b0\u01a1ng ph\u00e1t ra t\u1eeb \u0111\u1ec7m LED b\u1ecb h\u1ea5p th\u1ee5 m\u1ed9t ph\u1ea7n b\u1edfi phosphor, v\u00e0 m\u1ed9t s\u1ed1 phosphor xanh ph\u00e1t ra \u00e1nh s\u00e1ng v\u00e0ng tr\u1ed9n l\u1eabn, c\u00f3 th\u1ec3 t\u1ea1o ra \u00e1nh s\u00e1ng qu\u00e1 tr\u1eafng. Hi\u1ec7n t\u1ea1i, \u0111\u1ed1i v\u1edbi LED tr\u1eafng InGaN \/ YAG, b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a phosphor YAG v\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp phosphor, c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 m\u00e0u t\u1eeb 3500-10000K m\u00e0u tr\u1eafng c\u00f3 m\u00e0u. Th\u01b0\u01a1ng m\u1ea1i h\u00f3a s\u1ea3n ph\u1ea9m c\u00f3 phosphor v\u00e0ng YAG cho chip xanh, hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng t\u1ed1t nh\u1ea5t kho\u1ea3ng 25 lumen \/ watt, YAG \u0111\u01b0\u1ee3c nh\u1eadp kh\u1ea9u t\u1eeb C\u00f4ng ty Nichia c\u1ee7a Nh\u1eadt B\u1ea3n, gi\u00e1 2.000 nh\u00e2n d\u00e2n t\u1ec7 \/ kg; th\u1ee9 hai, Sumitomo Electric c\u1ee7a Nh\u1eadt B\u1ea3n \u0111\u00e3 ph\u00e1t tri\u1ec3n LED tr\u1eafng ZnSe l\u00e0m v\u1eadt li\u1ec7u, nh\u01b0ng hi\u1ec7u su\u1ea5t ph\u00e1t s\u00e1ng th\u1ea5p h\u01a1n. M\u1ed9t s\u1ed1 lo\u1ea1i ngu\u1ed3n s\u00e1ng LED tr\u1eafng kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi b\u1ed1n lo\u1ea1i phosphor: \u0111\u1ea5t, ba m\u00e0u c\u01a1 b\u1ea3n \u0111\u1ecf, xanh l\u00e1, v\u00e0ng, b\u1ed9t xanh v\u00e0 h\u1ed3ng, c\u1ea5u tr\u00fac garnet c\u00f3 th\u1ec3 th\u1ea5y t\u1eeb b\u1ea3ng n\u00ean l\u1ea1c quan v\u1ec1 t\u01b0\u01a1ng lai h\u01a1n so v\u1edbi \u00e1nh s\u00e1ng ba b\u01b0\u1edbc s\u00f3ng. Chip UV v\u00f4 c\u01a1 c\u00f9ng v\u1edbi phosphor ba m\u00e0u RGB \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00f3ng g\u00f3i LED tr\u1eafng, c\u01a1 h\u1ed9i th\u01b0\u01a1ng m\u1ea1i h\u00f3a LED tr\u1eafng ba b\u01b0\u1edbc s\u00f3ng. Nh\u01b0ng \u1edf \u0111\u00e2y k\u00edch th\u01b0\u1edbc h\u1ea1t phosphor ba m\u00e0u t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf, y\u00eau c\u1ea7u \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao, c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 v\u1eabn \u0111ang \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1.<\/p>\n

T\u1ed5ng quan ng\u00e0nh<\/strong>
\nLED Nichia c\u1ee7a ng\u00e0nh LED c\u00f3 \u0111\u1ed9 s\u00e1ng cao, l\u00e0 m\u1ed9t trong nh\u1eefng nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean s\u1eed d\u1ee5ng quy tr\u00ecnh k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau, c\u0169ng nh\u01b0 laser b\u00e1n d\u1eabn t\u00edm-xanh (Laser Diode; LD). L\u00e0 m\u1ed9t th\u1ebf l\u1ef1c l\u1edbn trong ng\u00e0nh, Nichia n\u1eafm gi\u1eef b\u1eb1ng s\u00e1ng ch\u1ebf LED m\u00e0u xanh. Nichia c\u00f3 nhi\u1ec1u b\u1eb1ng s\u00e1ng ch\u1ebf c\u01a1 b\u1ea3n cho qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t LED m\u00e0u xanh v\u00e0 c\u1ea5u tr\u00fac \u0111i\u1ec7n c\u1ef1c, ki\u00ean \u0111\u1ecbnh v\u1edbi chi\u1ebfn l\u01b0\u1ee3c ch\u1ec9 c\u1ea5p ph\u00e9p b\u00ean ngo\u00e0i v\u00e0 ch\u1ec9 t\u1ef1 s\u1ea3n xu\u1ea5t, v\u1edbi \u00fd \u0111\u1ecbnh \u0111\u1ed9c quy\u1ec1n th\u1ecb tr\u01b0\u1eddng, khi\u1ebfn gi\u00e1 LED m\u00e0u xanh cao. Tuy nhi\u00ean, nhi\u1ec1u doanh nghi\u1ec7p kh\u00e1c trong ng\u00e0nh c\u00f3 n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t \u0111\u00e3 ph\u1ea3n \u0111\u1ed1i m\u1ea1nh m\u1ebd. M\u1ed9t ph\u1ea7n ng\u00e0nh LED Nh\u1eadt B\u1ea3n cho r\u1eb1ng chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a Nichia s\u1ebd khi\u1ebfn Nh\u1eadt B\u1ea3n d\u1ea7n m\u1ea5t l\u1ee3i th\u1ebf trong cu\u1ed9c c\u1ea1nh tranh v\u1ec1 LED m\u00e0u xanh v\u00e0 tr\u1eafng so v\u1edbi c\u00e1c qu\u1ed1c gia kh\u00e1c nh\u01b0 ch\u00e2u \u00c2u v\u00e0 Hoa K\u1ef3, g\u00e2y thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng cho to\u00e0n b\u1ed9 ng\u00e0nh LED t\u1ea1i Nh\u1eadt B\u1ea3n. Nhi\u1ec1u nh\u00e0 v\u1eadn h\u00e0nh s\u1ebd n\u1ed7 l\u1ef1c h\u1ebft s\u1ee9c \u0111\u1ec3 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n (R&D) c\u00f9ng s\u1ea3n xu\u1ea5t LED m\u00e0u xanh. B\u00ean c\u1ea1nh Nichia, c\u00e1c c\u00f4ng ty kh\u00e1c nh\u01b0 Sumitomo Electric, Toyoda Gosei, Luo Mu, Toshiba, Sharp, Cree (M\u1ef9), ba nh\u00e0 m\u00e1y chi\u1ebfu s\u00e1ng l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi (Philips, Osram, v\u00e0 HP), Siemens, Research, v\u00e0 EMCORE, t\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00e3 \u0111\u1ea7u t\u01b0 v\u00e0o R&D v\u00e0 s\u1ea3n xu\u1ea5t, \u0111\u00f3ng g\u00f3p t\u00edch c\u1ef1c v\u00e0o vi\u1ec7c th\u00fac \u0111\u1ea9y ng\u00e0nh v\u00e0 m\u1edf r\u1ed9ng th\u1ecb tr\u01b0\u1eddng cho c\u00e1c s\u1ea3n ph\u1ea9m LED m\u00e0u tr\u1eafng.<\/p>","protected":false},"excerpt":{"rendered":"

First, an LED structure emitting principle 50 years ago, people have been understanding of the semiconductor material can produce light of the basic knowledge, the first commercial diode produced in 1960. LED is the abbreviation of the English light emitting diode (light emitting diode), its basic structure is an electroluminescent semiconductor materials, placed on a […]<\/p>\n","protected":false},"author":6,"featured_media":12822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-and-blog"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/posts\/12821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/comments?post=12821"}],"version-history":[{"count":1,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/posts\/12821\/revisions"}],"predecessor-version":[{"id":12824,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/posts\/12821\/revisions\/12824"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/media\/12822"}],"wp:attachment":[{"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/media?parent=12821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/categories?post=12821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iled-lights.com\/vi\/wp-json\/wp\/v2\/tags?post=12821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}