Light-emitting diode device

US11652193B2 · kind B2 · utility

Assignee

• LEXTAR ELECTRONICS CORPORATION · TW

Inventors

• Yi-Ting Tsai · Taoyuan, TW
• Hung-Chia Wang · Fongshan, TW
• Chia-Chun Hsieh · Hsinchu, TW
• Hung-Chun Tong · New Taipei, TW
• Yu-Chun Lee · Hsinchu, TW
• Tzong-Liang Tsai · Hsinchu, TW

Key dates

• Filing date: Oct 29, 2020
• Grant date: May 16, 2023
• Expiry date: Jan 19, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8516

Abstract

A light-emitting diode device is provided. First and second green conversion materials are respectively configured to convert a blue light emitted from a blue light-emitting diode to generate a first green light with a first wavelength range and a first wavelength FWHM, and a second green light with a second wavelength range and a second wavelength FWHM. The second wavelength FWHM is smaller than the first wavelength FWHM. A lower bound of the first wavelength range is smaller than a lower bound of the second wavelength range, and an upper bound of the second wavelength range is greater than an upper bound of the first wavelength range. An output light emitted from the light-emitting diode device has a spectral characteristic of less than 50% of TÜV Rheinland and more than 90% of wide color gamut.