LED device and backlight module

US11107957B2 · kind B2 · utility

Assignee

• FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD. · CN

Inventors

• Zhiguo XIE · Longbeilingcun, CN
• Fuhai Li · Longbeilingcun, CN
• Dongzi Chen · Longbeilingcun, CN
• Qinxiu Liu · Foshan, CN

Key dates

• Filing date: Aug 6, 2019
• Grant date: Aug 31, 2021
• Expiry date: Dec 6, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H29/142

Abstract

Provided is a LED device and a backlight module. The LED device comprises a bracket, a LED chip and an encapsulation layer. A reflective cup is arranged on the bracket, and the LED chip is arranged in the reflective cup. The encapsulation layer encases and encapsulates the LED chip in the reflective cup, the encapsulation layer has a top surface of the encapsulation layer. The top surface of the encapsulation layer is located above a top surface of the reflective cup, and is a lens curved surface. In an on-state, the LED device has virtual cross sections passing through a geometrical center of the LED chip and perpendicular to a top surface of the bracket, in at least one of the virtual cross sections of the LED device, the LED device has luminous efficiency greater than or equal to 95% within a beam angle of at least 60°.