Showa Denko Expands Lineup of Infrared LEDs for High-output Uses
23 Août 2017 - 6:30AM
JCN Newswire (English)
Showa Denko ("SDK"; TSE:4004) has expanded its product lineup of
infrared LED chips (IR-LEDs), which are mainly used as parts of
photo-couplers for gate drivers in power semiconductor modules and
parts of sensors for IoT-related devices.
SDK's product lineup of IR-LEDs has three categories, namely,
conventional LEDs made with Liquid Phase Epitaxy (LPE) method[1],
transparent type LEDs and reflection type LEDs made with Metal
Organic Chemical Vapor Deposition (MOCVD) method[2]. Since SDK's
IR-LEDs have some good characteristics like a power linearity at
lower electric current and a quick response time at high speed
cycle, they are widely used as parts for equipment that require
high reliability such as industrial equipment, automotive
equipment, medical devices, and security systems.
Reflection type LED is an LED chip which enhances its output with a
mirror layer formed under the light emission layer to reflect the
light beam upward. Reflection type LEDs have been used as parts of
photoelectric sensors for industrial equipment and other devices.
This time, SDK upgraded its technology to manufacture reflection
type LEDs, and successfully added "Double Junction Reflection Type
LED" and "P-up Reflection Type LED[3]" to its product lineup of
IR-LEDs.
1) Double Junction Reflection Type LED
This LED chip has two light emission layers, and realizes output
nearly twice as much as that of conventional reflection type LED.
It is suitable for uses that require high output LEDs such as
biometric sensors, surveillance or security cameras, virtual
reality, and sensors for automotive equipment.
2) P-up Reflection Type LED
This product has a polarity reversed from that of N-up structure,
which is the mainstream structure of conventional reflection type
LEDs. To manufacture IR-LEDs, LPE method is widely used, and this
method is mainly used to produce LEDs with P-up structure. To
respond to the requests from customers who desire to develop
high-power modules which are compatible with circuit designs for
conventional P-up non-reflection type LEDs, SDK has developed this
new product, P-up Reflection Type LED. P-up Reflection Type LED
gives our customers more choices of chip structures and more degree
of freedom in designing of circuits for packages and modules.
SDK has a history of 40 years as long-established LED chip
manufacturer, produces and sells many types of LEDs including
aluminum-gallium-indium-phosphide (AlGaInP) LEDs, gallium-arsenide
(GaAs) LEDs, and gallium-phosphide (GaP) LEDs. In recent years, SDK
has been expanding its IR-LED business. In addition to the
abovementioned efforts to develop new LED chips in its main
factory, Chichibu Plant, SDK acquired all shares of Shoko
Electronics Corporation (SKEC) from Shoko Co., Ltd. to make it a
wholly-owned subsidiary. SKEC is an LED chip manufacturer, whose
production base is located in Hioki City, Kagoshima Prefecture, and
manufactures IR-LED chips for industrial equipment, automotive
equipment, and consumer appliances and LED chips for displays.
Through acquisition of SKEC, SDK has established a supply system of
LED chips with two production bases, namely SDK's Chichibu Plant
and SKEC, integrated the two companies' technologies and
quality-control know-how to obtain synergy effect, and established
a system to supply wide variety of LED chips to the LED market that
has diversified needs.
SDK Group's IR-LED chips are acclaimed by manufacturers of
photo-couplers and sensors in the market. The market for IR-LEDs is
expected to expand concurrently with the expansion of IoT-related
device market. SDK will continue to expand its lineup of LED
products, and respond to the needs of the market.
[1] LPE method: Liquid Phase Epitaxy method. Under this crystal
growth method, solid phase crystal crystalizes and grows on a
substrate dipped into the solution of the target material. Due to
the rapid growth of crystal, this method easily realizes thick
film.
[2] MOCVD method: Metal Organic Chemical Vapor Deposition method.
Under this crystal growth method, an organometallic compound is
vaporized, and crystal of the target material grows on a substrate
in the gas. Through proper control of the flow of the gas
containing vaporized organometallic compound, you can form
homogenous thin crystal efficiently.
[3] P-up: An LED chip consists of P-side electrode and N-side
electrode. "P-up" indicates an LED chip with P-side electrode on
the top.
Full press release:
http://www.sdk.co.jp/english/news/2017/26821.html
About Showa Denko K.K.
Showa Denko K.K. ("SDK"; TSE:4004, US:SHWDF) is a major
manufacturer and marketer of chemical products serving a wide range
of fields ranging from heavy industry to the electronic and
computer industries. The Petrochemicals Sector provides cracker
products such as ethylene and propylene, the Chemicals Sector
provides industrial and high-performance gases and chemicals and
high-purity gases and chemicals for the semiconductor industry, and
the Inorganics Sector provides ceramics products such as alumina,
abrasive, refractory and graphite electrodes and fine carbon
products. Today, the Aluminum Sector provides aluminum materials
and high-value-added fabricated aluminum, the Electronics Sector
provides HD media, compound semiconductors such as ultra
high-bright LEDs and rare earth magnetic alloys, and the Advanced
Battery Materials Department (ABM) provides lithium-ion battery
components. For more information, please visit
www.sdk.co.jp/english/.
Source: Showa Denko K.K.
Contact:
Public Relations Office
Phone: 81-3-5470-3235
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