| Paper Abstract and Keywords |
| Presentation |
2023-03-17 16:00
[Invited Talk]
Development of Phosphor film for Ultra-thin High-brightness LCDs
Takehiro Yamasuge, Yasushi Ito, Tomomitsu Hori (Dexerials) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
In recent years, mini-LEDs and local dimming have been used in direct-type backlight units (BLUs) in LCDs to realize thinner LCD designs and higher contrast, so as to compete with OLEDs. A phosphor film with a green-emitting SrGa2S4:Eu phosphor, a red-emitting K2SiF6:Mn phosphor and a dichroic filter was developed and commercialized and is described in this paper. An LCD with the phosphor film and blue mini-LEDs in a direct-type BLU can realize a thinner design, higher contrast, higher luminance and higher uniformity. A smaller particle size is required for the SrGa2S4:Eu phosphor to improve the uniformity of the phosphor film, but the fluorescence of the phosphor tends to degrade during aging. A new surface coating for the SrGa2S4:Eu phosphor was found to improve its reliability. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Phosphor / LED / Backlight / SrGa2S4:Eu / Dichroic filter / / / |
| Reference Info. |
ITE Tech. Rep., vol. 47, no. 13, IDY2023-22, pp. 39-43, March 2023. |
| Paper # |
IDY2023-22 |
| Date of Issue |
2023-03-10 (IDY) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
IDY SID-JC |
| Conference Date |
2023-03-17 - 2023-03-17 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
online |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
|
| Paper Information |
| Registration To |
IDY |
| Conference Code |
2023-03-IDY-JC |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Development of Phosphor film for Ultra-thin High-brightness LCDs |
| Sub Title (in English) |
|
| Keyword(1) |
Phosphor |
| Keyword(2) |
LED |
| Keyword(3) |
Backlight |
| Keyword(4) |
SrGa2S4:Eu |
| Keyword(5) |
Dichroic filter |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Takehiro Yamasuge |
| 1st Author's Affiliation |
Dexerials Corporation (Dexerials) |
| 2nd Author's Name |
Yasushi Ito |
| 2nd Author's Affiliation |
Dexerials Corporation (Dexerials) |
| 3rd Author's Name |
Tomomitsu Hori |
| 3rd Author's Affiliation |
Dexerials Corporation (Dexerials) |
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| Speaker |
Author-1 |
| Date Time |
2023-03-17 16:00:00 |
| Presentation Time |
20 minutes |
| Registration for |
IDY |
| Paper # |
IDY2023-22 |
| Volume (vol) |
vol.47 |
| Number (no) |
no.13 |
| Page |
pp.39-43 |
| #Pages |
5 |
| Date of Issue |
2023-03-10 (IDY) |