1. DiamondInsideTM LED Speaker：Dr. James Sung (MIT) DLC LED Advantages︰
Diamond–Like Carbon (DLC) is LED’s Best Friend
DLC LED Advantages︰
Eliminate Hot Spots
Lower Junction Temperature
Radiate Heat
Tolerate Overdrive
Relieve Interface Stress
Improve Reliability
Minimize Light Decay
Reduce Cost
Speaker：Dr. James Sung (MIT)

2. The comparison with Cree, Nichia and DLC COB on light performance

13. Buffer layer: Ti (TiW)/DLC/Ti (TiW)/DLC/Ti(TiW)/DLC
Cree VLED Chip
DLC VLED Chip
Buffer layer:
TiW/Pt/TiW/Pt/TiW/Pt/TiW/Pt
Buffer layer: Ti (TiW)/DLC/Ti (TiW)/DLC/Ti(TiW)/DLC

17. DLC Terminated Hot Spot of MQW

21. Testing sample: 8 dies of 45x45mil COB package

22. DLC VLED light module on DLC MCPCB at 350mA
8 dies of DLC VLED chips on DLC MCPCB COB
Tmax: C
8 dies of regular VLED chips on DLC MCPCB COB
Tmax: C

23. DLC flip chip light module (Regular MCPCB) at 350mA
8 dies of DLC flip chip LED chips on regular MCPCB COB
DLC LED chip
Tmax: C
T: <1 0C
Regular LED chip
Tmax: C
T: ~6 0C
8 dies of regular flip chip LED chips on regular MCPCB COB

24. DLC flip chip light module (Regular MCPCB) at 700mA
DLC LED chip
Tmax: C
T: <8 0C
8 dies of DLC flip chip LED chips on regular MCPCB COB
Regular LED chip
Tmax: C
T: ~28 0C
8 dies of regular flip chip LED chips on regular MCPCB COB

25. 8x45mil chip (350mA) on ceramic substrate (18x16mm)
Regular LED chip
Tmax: C
T: ~2 0C
(32 chips)
DLC LED chip
Tmax: C
T: <1 0C
(32 chips)

26. 8x45mil chip (700mA) on ceramic substrate (18x16mm)
Regular LED chip
Tmax: C
T: ~9 0C
(32 chips)
DLC LED chip
Tmax: C
T: 3~4 0C
(32 chips)

34. The reliability of soldering COB package at 85oC and RH 85%

35. Process Flow 製程流程圖

36. DLC Light Module及球泡燈

38. Light Module
訂購錸鑽光板300片
密切合作
密切合作

39. Radiation Patterns

40. Big
光束角 : 280 °
總流明 : 450 lm
最大光強度 : 61.2 cd

42. Omni-directional LED bulb-DLC LEDs light module with remote phosphor

43. Light pattern of LED and fluorescent bulb

44. Thermal Conductivity
Thermal Conductivity = Thermal Diffusivity ＊ Heat Capacity ＊ Specific Gravity
Thermal Diffusivity ≒Sound Speed
　　　　Diamond = Mach 60 (18 Km/sec)
Sound ≒ Phonon ≒ Lattice Vibration

50. The Thermal Mechanism of DLC to DLC LED Light Module

52. Relative Luminous Flux (%)

62. Thank you！