Taipei, Wednesday, April 22, 2015 05:46 (GMT+8)
light rain
Taipei
18°C
Key trends in the development of LED lighting technology
Jessie Lin, DIGITIMES Research, Taipei [Tuesday 3 April 2012]
Registration required (free) to purchase. Please sign in if you wish to continue.
Developments in LED lighting technology are taking place at a dramatic pace, heavily influencing the LED industry chain as well as final products. Component makers continually pursue the goal of raising the luminous efficacy of LEDs, while also addressing voltages that are radically different from that of main electricity, and adopting new packaging processes such as COB. This report serves as a primer for these issues as well as highlingting breakthrough developments in terms of capacitors, heat dissipation and smart LED lighting systems.
Abstract

LED lighting prices are expected to fall by 30% per year, with luminous efficacy approaching 200 lm/W by 2014. Many countries have also identified 2015 as a key milestone in their development of lighting policies, meaning that 2014 is likely to see a large-scale movement to replace traditional lighting. For example, Japan plans to raise the share of the general lighting market accounted for by LED lighting to 50% by 2015; South Korea also has a 2015 target of 30%; and China a 2015 target of 20%. The 2013-2014 period will be a crucial phase for laying the groundwork to achieve these 2015 targets; the LED lighting penetration rate is therefore forecast to hit 25.8% in 2014, with an output value of US$41.9 billion.

However, the industry has a long way to go before it can achieve those targets. Companies throughout the upstream, midstream and downstream LED supply chain are working on improving the quality of their products while reducing the costs, and Digitimes Research is keeping a close eye on the related impact on final products.

In terms of upstream LED components, manufacturers have continually pursued the goal of raising the luminous efficacy of LEDs. For example, Cree, the largest US-based LED manufacturer, had its 2W LED package products rated as high as 161 lm/W in 2011, higher than the maximum luminous efficacy of 133 lm/W for Nichia, the global LED leader by market share, and the 146 lm/W achieved by German giant Osram. However, it is Japanese manufacturer Toyoda Gosei that has positioned itself at the top of the market with the launch of a 170 lm/W LED component that delivers performance roughly two years ahead of the US DOE schedule for achieving such products. These products went on sale in early 2012.

Another challenge LED industry players are addressing is how to make LED products that are more easily used with mainstream electric grids. Most LEDs work on voltages that are radically different from that of mains electricity, resulting in a significant loss in efficiency. HV LEDs LEDs are one way of solving this problem.

In terms of LED package manufacturing processes, while COB was already in use in some sectors, falling LED prices have led more and more manufacturers to adopt it. Development efforts for COB technology have been focused on the need to increase luminous flux performance and decrease the volume of the device. Spotlights are one area where the potential of COB LEDs can be exploited, as the lack of ghosting on the subject for illumination means that optical performance is better than that of high-power LEDs.

Another type of process, which promises "freedom from binning" was developed by Philips for its Luxeon LED components. This method matches LED chips of different wavelengths with different phosphor formula in order to eliminate the different binning processes required for different LEDs. One advantage of this is that it to a large extent solves the problems of defective products and excess stocks, meaning that a much higher proportion of each batch of LED components can be used in the primary product range, i.e. LED lighting.

There have also been breakthrough developments in terms of capacitors, a key component affecting the lifespan of LED lighting products. Heat dissipation is another area where LED lighting manufacturers continue to make improvements, while on the downstream end product front, smart LED lighting systems are no longer limited to conceptual prototypes.

These various technological improvements should make a major contribution to increasing LED lighting uptake in the future, as they reduce the number of LED chips needed, reduce overall lighting costs, reduce power consumption, and improve LED usage rates.

Table of contents
Price: NT$30,000 (approx. US$1,050)
Realtime news
  • Two STATS ChipPAC subsidiaries in Taiwan merge

    Bits + chips | 8h 42min ago

  • Win Semi expects to post double-digit growth in 2Q15 sales

    Bits + chips | 8h 46min ago

  • 32-inch TV panel pricing expected to drop US$2-3 during late April, says WitsView

    Displays | 9h 8min ago

  • GET to issue 150 million new shares for private placement

    Green energy | 9h 10min ago

  • China March mobile phone user base reaches 1.9 billion, says MIIT

    Before Going to Press | 8h 59min ago

  • China building home-grown DRAM industry, to pose threat to existing leaders in 2017

    Before Going to Press | 9h 28min ago

  • Memory related device suppliers to break into Taiwan top-10 IC design houses in 2015

    Before Going to Press | 9h 41min ago

  • Taiwan market: HTC to introduce mid-range HTC One E9+

    Before Going to Press | 9h 42min ago

  • Huawei Technologies aims at revenues of US$70 billion for 2018

    Before Going to Press | 9h 43min ago

  • IoT to drive semiconductor growth, says TSMC co-CEO

    Before Going to Press | 9h 44min ago

  • Second-tier China LED makers may start price-cut competition

    Before Going to Press | 10h 16min ago

  • Digitimes Research: Taiwan large-size TFT LCD panel shipments to increase 5% in 2Q15

    Before Going to Press | 10h 17min ago

  • Intel to launch quad-core SoFIA LTE chips in 4Q15, say Taiwan makers

    Before Going to Press | 10h 17min ago

  • Over 50% of Philips sales came from green products in 2014

    Before Going to Press | 10h 18min ago

  • Global Sources Electronics debuts UAVs exhibition

    Before Going to Press | 10h 19min ago

  • Hampoo showcases Intel platform-based tablet solutions at Global Sources Electronics

    Before Going to Press | 10h 20min ago

Pause
 | 
View more

Taiwan server shipment forecast and industry analysis, 2015

RESEARCH EXTRAS | Apr 10, 15:57

The server market did not perform well in 2014 though rising demand from Internet data centers (IDCs) and China brands helped global shipments (measured by motherboards) grow 7.1% to 10.4 million. Using this as the base for growth, in 2015 the market is expected...

How China is shaping the LTE/TD-LTE market in 2015

CHINA SMARTPHONE | Apr 9, 15:42

Digitimes Research estimates that the global LTE market doubled in size to 445 million users in 2014 and we further forecast that annual growth in the number of LTE users will remain above 70% between 2015-2016, with the overall market reaching 1.466 billion...

Taiwan large-size LCD panels – 4Q 2014

TAIWAN LCD PANEL | Feb 17, 11:23

Taiwan-based makers saw their large-size TFT LCD panel shipments increase on year in fourth-quarter 2014, driven largely by demand for TV applications. But they are facing growing competition from China-based and Korea-based makers who are ramping up new production...

Taiwan LCD TVs – 4Q 2014

TAIWAN DISPLAY SYSTEM | Feb 17, 11:07

Taiwan's LCD TV makers saw significant increases in shipments in the fourth quarter of 2014 thanks to strong seasonal demand, as well as Foxconn's shipments to Mexico to fulfill government procurement orders.

Taiwan small- to mid-size LCD panels – 4Q 2014

TAIWAN LCD PANEL | Feb 16, 15:11

Major Taiwan-based suppliers of small- to medium-size LCD panels changed their production strategies in fourth-quarter 2014 as the industry entered the slow season amid sluggish demand for smartphone applications and rising competition from China-based rivals...

How China is shaping the LTE/TD-LTE market in 2015
2015 China smartphone panel trend forecast
Analysis of China revised domestic semiconductor industry goals
  • Wireless broadband developments in Southeast Asia markets

    As of 2013, the 10 ASEAN nations had a total of over 700 million mobile subscriptions, with the CAGR from 2003-2013 reaching 24%. This Digitimes Research Special Report analyzes the various mobile broadband markets in ASEAN and looks at the respective trends in 4G LTE development for those markets.

  • 2015 global tablet demand forecast

    This Digitimes Research Special Report provides a 2015 forecast for the global tablet market and analyzes the strategies of key market players such as Google, Apple, Intel, and Microsoft.

  • 2015 China smartphone panel trend forecast

    This Digitimes Research Special Report analyzes the strategies of key China-based major panel makers BOE, Tianma and IVO for attacking the different market segments through technology and pricing, and their relationship to local vendors Huawei, Lenovo, ZTE, Xiaomi and Coolpad.