1
June 16
th
, 2010
AGC launches sale of a glass-ceramics substrate for high-power LED lighting
- More luminous, more durable with Glass -
Asahi Glass Co., Ltd.
In July 2010, AGC (Asahi Glass Co., Ltd.; Head Office: Tokyo; President & CEO: Kazuhiko Ishimura) will start sales of a new glass-ceramics substrate that enables high-brightness and high-durability for LED lighting. This new glass-ceramics substrate will expand LED applications in the lighting and illumination sector, including 3D televisions and automotive lighting, in which high-power output is increasingly in demand. Starting the volume production at a newly-built factory in Taiwan, AGC aims to achieve a market share of 20% or over in the glass-ceramics substrate market for high-output LED lighting, which is expected to grow into a 100-billion-yen market by 2020.
So far, LED applications have been limited primarily to products with extremely small power output, such as liquid crystal display televisions and home interior lighting. In the future, however, the demand trend is expected to shift toward high-output LED applications that require high-brightness, such as 3D televisions, automotive headlights and other automotive lighting, and outdoor lighting and illumination. In addition to high-brightness, high-durability is also a prerequisite for high-output LED applications as heat generation becomes greater as the power output increases. Conventional resin substrates are susceptible to high temperature and are not considered suitable for high-output LEDs. In contrast, alumina substrates are heat-resistant, but the reflectivity deteriorates over time as the silver reflective film, which is used for enhancing high-brightness, becomes sulfurated over a prolonged period. In addition, due to the poor moldabiliy, alumina substrates are considered to have only limited usage. AGC’s new substrate that is created through the integration of our glass technology and ceramics technology enables both high-brightness and high-durability for high-output LEDs, and has excellent moldability into compact shapes. The product features are as follows. 1)
High-brightness:
High-reflectivity enhanced the brightness by 20% - 30% as compared to alumina substrates (*)
2)
High-durability:
Excellent heat dispassion design allows higher heat dispassion rate than alumina substrates. Also, the reflectivity does not deteriorate over a prolonged period.
3)
Excellent moldability: Excellent moldability enables a compact and complex cavity structure.
*Note: Reflectivity varies depending upon the thickness of the substrate.
Leveraging our strengths, AGC is determined to move into the field of LED lighting and various other next-generation lighting materials, and introduce new products to the market at an accelerated pace.
For further information, please contact Toshihiro Ueda, General Manager of Corporate Communications & Investor Relations, Asahi Glass Co., Ltd. (Direct inquiries to: Yuichi Kirayama, Phone: +81-3-3218-5260; E-mail:
info-pr@agc.co.jp
)
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Reference Material＞
Figure 1: LED Market
Flat type
Cavity type
(Omni-directional)
(Directional)
Highoutput
Lowoutput
Size of substrate
market for
high-output LED
in 2020:
100 billion yen
(AGC’s estimate)
Electric bulletin
boards
Home
interior lighting
PC
Electronic
devices
Automotive headlights
Printers
Outdoor
lighting and illumination
3D Televisions
Flat type
Cavity type
(Omni-directional)
(Directional)
Highoutput
Lowoutput
Size of substrate
market for
high-output LED
in 2020:
100 billion yen
(AGC’s estimate)
Electric bulletin
boards
Home
interior lighting
PC
Electronic
devices
Automotive headlights
Printers
Outdoor
lighting and illumination
3D Televisions
Figure 2: Features of AGC’s glass-ceramics substrates
More luminous, more durable with Glass
①
①
Heat
Heat
：
：
High
High
-
-
dissipation
dissipation
Ag heatsink can be integrated
Temperature increase is
controlled at max. 15℃/W
50
40
30
20
10
0
60
T
emp
er
a
tur
e
r
ise
(℃
/W
)
LED
Newly-developed
high-reflective glass
allows 90% or over reflectivity
regardless of the thickness
②
②
Light
Light
：
：
High
High
-
-
reflectivity
reflectivity
100
90
80
70
60
R
efl
ec
t
ivi
ty
(%)
Thickness (mm)
0 0.2 0.4 0.6 0.8
Alumina
AGC
’
s Glass Ceramics
AGC’s Glass
Ceramics
(20-30% higher-brightness than Alumina)
A
lu
m
in
a
More luminous, more durable with Glass
①
①
Heat
Heat
：
：
High
High
-
-
dissipation
dissipation
Ag heatsink can be integrated
Temperature increase is
controlled at max. 15℃/W
50
40
30
20
10
0
60
50
40
30
20
10
0
60
T
emp
er
a
tur
e
r
ise
(℃
/W
)
LED
LED
Newly-developed
high-reflective glass
allows 90% or over reflectivity
regardless of the thickness
②
②
Light
Light
：
：
High
High
-
-
reflectivity
reflectivity
100
90
80
70
60
R
efl
ec
t
ivi
ty
(%)
Thickness (mm)
0 0.2 0.4 0.6 0.8
Alumina
AGC
’
s Glass Ceramics
100
90
80
70
60
R
efl
ec
t
ivi
ty
(%)
Thickness (mm)
0 0.2 0.4 0.6 0.8
Alumina
100
90
80
70
60
R
efl
ec
t
ivi
ty
(%)
Thickness (mm)
0 0.2 0.4 0.6 0.8
Alumina
AGC
’
s Glass Ceramics
AGC’s Glass
Ceramics
(20-30% higher-brightness than Alumina)
A
lu
m
in
a
