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HP Architecture answers
Lumileds has a very lengthy background traversing the transition in lights from normal sources to LEDs. initially a joint venture of Philips and Agilent (HP), the enterprise changed into wholly got by way of Philips lighting after which offered, along with Philips automobile lights to Apollo. Now, as a privately-owned company the problem of transformation, transition, innovation, and persisted growth falls on Matt Roney who took over as CEO in October 2020, after joining Lumileds to run the company’s car company initially of 2020. Roney these days referred to his choice to be a part of Lumileds, his view of the strong-state lighting (SSL) transition, Lumileds' place within the business, and his mission to increase the enterprise in four company segments.
LEDs magazine: Thanks for doing this interview, Matt. We haven’t had the possibility to talk earlier than or meet throughout the pandemic yr, so what i do know about you is truly constrained to Lumileds press releases. are you able to inform us what led you to the semiconductor and lights area, and Lumileds in particular?
Matt Roney: Thanks, Maury, it’s first-class to fulfill you, essentially, and to share slightly about me and Lumileds. You requested about what led me to this industry and this business at this time; the answer is fairly primary. My uniqueness is enterprise transformation. It’s something I’ve accomplished in a number of industries and in diverse instances, together with private equity possession. almost immediately after my final firm, Paladin, was obtained with the aid of Stanley Black & Decker, I grew to be common with Lumileds and, like so many others, was quickly hooked on and excited about the strong-state lighting sector. It’s a sector in transition. the first twenty-plus years have based the field; I feel, notwithstanding, that the next twenty years can be transformational.
LEDs: I take your factor a few company sector in transition, however what principally attracted you to Lumileds?
Roney: Lumileds’ talents to innovate and shape a complete sector become a watch-opener. i am drawn to incredibly technical companies in advanced operating environments with innovation as a riding drive, and Lumileds has it all.
a lot of individuals, doubtless most of LEDs magazine’s readership, think of Lumileds as the LED company they’ve accepted in view that 1999. but today, with the integration of Philips automotive lights, we’re a global enterprise with a 100-12 months heritage — we have frequent lamp factories serving the global automotive aftermarket business, so we nevertheless have a big operation so one can proceed to transition from everyday lamps for many years. I found Lumileds to be a fascinating company with this lengthy, prosperous heritage of innovation and technological firsts. the first automobile LED daylight operating lights and the first LED headlight with Audi, the first television backlit with LEDs, the Sony Qualia 005, the first LED camera flash for mobile phones, and the DOE L Prize-winning first 60W bulb replacement.
"i am drawn to enormously technical agencies in complex operating environments with innovation as a riding drive"
On right of that, there’s an brilliant worker base at Lumileds. You’d are expecting a CEO to make that declare, but in Lumileds’ case, we have americans which are the inventors and innovators of both the technology and the building of the markets we compete in. I joined Lumileds to run the car company, and that i couldn’t be extra excited now diving headfirst into my function as CEO.
LEDs: What form of transition challenges have you ever discovered because joining Lumileds?
Roney: well, in usual times I’d doubtless talk about headwinds in the auto business, the continued integration of two diverse and significant company instruments, and the transition of a standard manufacturing effort to 1 for solid-state lights. Navigating these challenges with an organization that has a terrific foundation and ensuring that we’re on a increase trajectory is usual — and we’ve focused on that — but this has now not been a normal fourteen months.
LEDs: How has COVID-19 impacted Lumileds?
Roney: It could be counterintuitive, however I feel we’re improved for it. The company, our individuals, truly comprehend a way to manipulate through change and transition. COVID got thrown on true and the employees in reality stepped up. They navigated the comprehensive shutdown of the automotive business for a couple of months. and then they managed the shutdown and restart of our operations for operations that do not get shut down very often, principally with out loads of planning. We saved operating all over, investing and innovating, and now we’re seeing the rewards of the world effort that it took to get us via. It has truly been a stunning accomplishment as a company.
LEDs: when it comes to the LED transition, in universal i would say the LED trade turned into fairly far through that transition in the event you came aboard. maybe in the auto sector it wasn’t as a long way alongside because it could be within the popular lighting sector, but the strong-state lighting fixtures transition changed into pretty plenty a achieved deal.
Roney: smartly, there are nevertheless lots of sockets obtainable which have well-known bulbs. So for a lot of in illumination, it could possibly appear to be the transition is relatively a good deal a achieved deal, however there’s still a major volume of innovation going on with everything from human-centric lights and horticulture to micro LEDs — not to mention the mixing of controls, IoT, and smart lighting that you wrote about these days and cited that there’s nevertheless an awful lot to be accomplished. satisfying the promise of LEDs isn't yet finished, individually.
And if we appear at the auto business, car headlighting is almost to flow the 50% mark for LED headlighting. truly, we’re celebrating that in Germany our first LED headlight retrofit bulb changed into just permitted as highway prison for aftermarket replacements. There’s still a fair little bit of strong-state lights transition to come back.
LEDs: I did not recognize that Lumileds in fact manufactured popular lamps. i assumed these came from Philips lighting.
Roney: When Apollo purchased Lumileds, they purchased two items from Philips. there is the historic Lumileds, which dates again as you understand to the Agilent and Philips three way partnership, and then there’s Philips automotive lighting. Apollo purchased them both. these were two separate divisions interior of Philips that have been carved out and put together as one enterprise. after I talk about transition and transformation, I additionally accept as true with the cultural integration of these two groups.
LEDs: As a private business, Lumileds doesn’t report earnings or fiscal particulars out of your distinctive enterprise segments. We nonetheless have some data from our options unlimited stories it is an indicator of your packaged LED profits. however can you share some relative indications on the size and boom expertise of your diverse corporations?
Roney: There are 4 actually essential segments that we play in and that they all play crucial roles in our business. there is the automobile aftermarket, which is time-honored lamps and LED retrofit bulbs and auxiliary lighting fixtures. that's received its personal pleasing go-to-market channel. 2nd is the car LED business; here is directed to setmakers and the OEM carmakers themselves. Our strong point enterprise, which encompasses cell flash, screen, IR, and UV, continues to develop and evolve. And the fourth phase is our illumination company, which is architectural lights, human-centric lighting fixtures, and horticulture, and many others. they all play equally crucial roles for us in terms of relative dimension, boom, priorities, and investment and in product portfolio going forward.
LEDs: in regards to the specialty segment, the flash software doesn’t surprise me since the cell device manufacturers demand super performance out of LEDs for camera flash. however frankly i was shocked you mentioned reveal. i thought the backlight market had been conceded to suppliers in Asia. Or perhaps are you speaking about rising purposes similar to self-emissive shows?
Roney: We don’t think about any of the distinctiveness segments as factor-in-time opportunities. Our activity is in innovating, enhancing, and forging forward. So our display innovations in the mid-2000s led the manner for these days’s backlight market that generally served out of Asia. however the future of displays — direct view with micro LEDs, AR, XR, and head-set up displays — that’s being created interior Lumileds as we speak.
LEDs: I don’t recall Lumileds saying the rest publicly about those styles of functions a good deal. and that i do not consider i'd find tons about it to your website.
Roney: I think that speaks mostly to the deep consumer relationships we have and our heritage within the segments I described. speaking softly could cause some to count on we’re now not doing anything else, and believe me, I actually have my share of advertising and marketing individuals that are looking to talk — however we’re engaged across the entire price chain in each of our segments.
LEDs: You mentioned micro LED earlier, however I haven’t considered any bulletins from you on that area.
Roney: Micro LED is a natural fit for Lumileds because of our depth in technology and innovation and because of our gadget and technique potential. We were the primary to make the transition to six-in. wafers and realized a whole lot from that. a good deal of the business is still on 4-in. wafers. Being capable of get the variety of wafer uniformity and homogeneity and being able to tightly control bow and all those sorts of things goes to be definitely vital in the transition to small pixel measurement on higher wafers for micro LED. notwithstanding I accept as true with we're leading the innovation here, we aren’t talking a lot about it, but dwell tuned, we will.
LEDs: concerning micro LEDs, in case you say “throughout the value chain,” what do you mean? Are you attempting to own one of the most system of doing mass switch of micro LEDs?
Roney: The mass transfer expertise has implications within the die design. So, except you are engaged with definite mass transfer suppliers, you basically can not become an epi wafer enterprise. As you’d are expecting, we have construction actions which are without delay aiding our micro LED innovation.
LEDs: Are you additionally pursuing issues like the integration of some part of the driver electronics extra closely with the LED?
Roney: it really is an extra area the place Lumileds, via partnerships, has the capability to do a lot of different things. There are some natural paths for us to take and we already do a few of that these days.
LEDs: You mentioned automotive as a local where you don’t necessarily demonstrate details of your work. some of your competitors have made important bulletins about dense pixelated headlamp developments and other improvements. may still I assume you have got such R&D underway besides the fact that it’s not very evident?
Roney: sure, we're working at all of those things and we even have some interesting techniques of doing it with completely configurable arrays. Our Neo actual die architecture, as an instance, allows for very shut spacing of LEDs and is one in all our keys for matrix headlighting. furthermore, we’re working on micro LEDs for utterly pixelated headlights. So there may be lots of issues we've got happening in these areas, but we just do not put up press releases about them.
LEDs: Your answer also suggests an additional question. The auto market is powerful but also provide restrained at the moment. Doesn’t that restrict your advantage business within the section?
Roney: The most suitable method to explain automotive is that this yr has been fairly respectable. It can be even improved because there’s greater demand than the business is capable of produce as a result of the chip scarcity, and practically the whole provide chain is strained making an attempt to deal with the rebound in construction stage. So we’re seeing it in every kind of areas, no matter if it’s certain of our electronic components that we purchase to position into stage 2 techniques in addition to sub-add-ons that go into LED items and even some raw substances. So, it’s the chips that get the headlines, however the total supply chain is strained. That potential that there will continue to be some pent-up demand for cars and that the trade aren't capable of produce enough to meet that demand at the moment, which potential there’s greater runway for car production increase coming over the subsequent couple of years.
LEDs: Does automobile influence in generally larger component costs?
Roney: car has a few issues going for it, primarily in case you’re a pacesetter within the industry. The technological hurdles are fairly excessive, so that creates obstacles to entry. Two is the nice requirements are very high, as are the skills for design-in and qualification into a setmaker's portfolio. So these things make it very pleasing for us and different leaders in the business. It’s very stressful. when you have all the first-class methods and the components-per-billion type of first-class stages in manufacturing, and you've got the expertise to proceed to push the envelope on lumens per watt and put a lot of usable mild on the road, then that puts you in a fine spot to offer protection to your market position in an area like that.
LEDs: Now let’s turn to familiar illumination. a few years back, I wrote reasonably a whole lot about how specialization changed into coming to the LED container with companies apparently making a unique LED for most every standard lighting fixtures software. what's Lumileds' strategy and where is it headed?
Roney: If the intention is to copy the lots of accepted bulbs that probably still exist these days, then an software via utility strategy can be appropriate. We believe there’s a finite future in that strategy. We wish to be sensible with our structure selections that permit us to serve an illumination trade that still has one foot on this planet where luminaire design changed into in keeping with bulbs and the different foot in a world where creativeness, not the form of the bulb, is riding design. So, we straddle that line as well with our LED structure that permits us to help and adapt, with no need to create a new LED structure each and every time.
You’d doubtless be stunned through how a good deal customized and better level integration work we do with our clients, however’s most effective feasible on account of the strategy we’ve fascinated by our product structure, as a result of we've such deep and robust phosphor advantage, and since we control our production. These are compelling benefits out there.
LEDs: I definitely have written a lot about your color LED capabilities and of course that comprises monolithic colours with type of distinct machine physics. after which you guys have additionally achieved some definitely imaginitive things with phosphor-converted colour. Is your work within the colour market attributable back to the three way partnership and the early research on shades?
Roney: sure, it's, and additionally having that in-condominium phosphor skill. Phosphor conversion no longer only makes it possible for some enjoyable lights techniques, like our Luxeon Fusion, it supports lights it's bigger in great, promises extra gentle, and is extra effective. ultimately, it too will make a contribution to our sustainability efforts.
LEDs: You also have among the trade’s deepest portfolio of horticultural LEDs. That portfolio also contains monochromatic and phosphor-converted add-ons. what's the significance of the horticultural market for Lumileds?
Roney: Horticulture is a crucial a part of our illumination section and we’ve considered massive increase over the ultimate two years. We consider it’s in its last degrees of transition from a groovy and engaging application to one that’s here to reside. other than its obvious sustainability affects, horticulture lighting will influence people’s each day lives. These applications are solving actual-world equity considerations and enabling some people to eat fresh food. It’s hard no longer to love and admire horticulture lighting and we’re extremely joyful that it's gaining traction.
LEDs: Turning to evolving LED technology, let’s focus on chip-scale kit (CSP) know-how. Lumileds changed into first to announce CSP LEDs at thoughts in gentle lower back in 2013. There was loads of speak lower back 5–6 years in the past about CSP taking on the SSL market. however we find many SSL manufacturers still don’t use CSP LEDs. where and why is Lumileds finding CSP success?
Roney: CSP has a place in excessive-vigour lighting. It’s mighty, it’s obtained striking warmth switch homes, it’s small in size, and you may create a tightly packed array and get a lot of gentle from a small kit. That makes it magnificent for things like headlights, other car functions, and different compact, excessive-output functions within the illumination house. I believe you’ll find that almost all if no longer all of the basic LED suppliers to the OEM auto manufacturers use CSP.
LEDs: What about know-how outside the human visible latitude such as infrared (IR) and ultraviolet (UV)?
Roney: We do have a portfolio, as I suppose you’d expect, for each IR and UV. IR has a huge play in car, security, and applications like spectrometry. nowadays you’ll find us in driver monitoring programs, drones, security monitoring, park distance handle, and more. UV is a captivating vicinity, too. though the dialog these days is dominated through UV-C germicidal capabilities, clinical and other functions use UV-A and B and that’s the place we proceed to innovate.
LEDs: if you happen to moved into the CEO function, a number of other businesses pointed out to me that Lumileds was basically swapping to a heavy center of attention on automobile and i even wrote anything that I believe could have been interpreted that manner, which wasn’t my intent. I think from our dialog that’s relatively certainly no longer the case. What recommendations would you desire readers to take far from this interview?
Roney: There are a couple of concepts i hope readers take away from our conversation. no 1 of path is that while automobile is a vital section for us, we aren't focusing on automotive on the rate of the different segments. Our business is more advantageous and we’re greater in a position to help our valued clientele and innovate because we play in our 4 segments: automobile aftermarket, automobile LED, forte, and illumination. we can proceed to make investments and grow in each of these.
I consider the second component that may still be clear is that Lumileds hasn't long gone away. Our valued clientele and companions recognize this, but i will be able to take note how widely wide-spread readers could misread our quietness. we are enthusiastic about innovation and invest as a result. That results in loads of exciting opportunities with entertaining groups. The undeniable fact that you do not see us speakme about micro LEDs for screen or augmented truth doesn't suggest that that we aren't deeply engaged. we are and we plan to take the leadership position.
Likewise, the fact that you have not seen a whole lot about pixelated headlights when actually we do have configurable ADB arrays with our Neo exact MxN product line, and we do it in a very wonderful approach that others can’t. one of the vital exciting issues about car lighting fixtures is that the technology you’ll see on 2022 model yr cars become doubtless deliberate two or more years ago. think about the innovation you might see on a 2024 motor vehicle that’s already been baked in.
The last takeaway is that innovation within the LED area is removed from over. live tuned.
seem to be past the checkbox to opt for official LEDs: Exploring the fallacy of ‘respectable ample’
Don’t fall under the spell that maturing LEDs are 'first rate sufficient' for your utility. for many makes use of, LEDs are frequently regarded decent adequate that selection has develop into an endeavor of checking specification packing containers and deciding upon cost. but simply as any two new cars will get you from point A to B on day one, over time, ameliorations in great and engineering can at once become obvious. LED requisites can masks weaknesses that have an effect on pleasant, reliability, and performance over time.
table data courtesy of Lumileds.LED manufacturers take into account that many of the lengthy-term electrical failures and/or color shift in LEDs are caused by way of weak spots in LED kit design — not the LED chip itself. So it’s not going a shock that Lumileds constantly evaluates aggressive LEDs — peculiarly once we get stories from shoppers of complications in the container. What’s doubtless less well prevalent is the depth of analysis we undertake to better take note the science of LED performance.
We currently evaluated yet another company’s 3030 (three×3-mm) surface-mount machine. From a cursory evaluate of numbers on the datasheet viewpoint, the equipment appears corresponding to the Luxeon 3030 HE Plus. The LED chips are linked to a leadframe using silicone glue or solder in a plastic leaded chip service (PLCC) kit. The leadframe, which can also be epoxy molded compound (EMC) or thermoplastic polyester (PCT), gives the electrical connection, reflectivity of the LED mild, and thermal dissipation.
FIG. 1. At a lighting fixtures company, competitor’s 3030 LEDs (appropriate) and Lumileds Luxeon 3030 HE Plus (bottom) were evaluated below various circumstances that test the best and performance of the gadget assembly materials and architectures. (picture credit: Illustrations and SEM pictures courtesy of Lumileds.)
The equipment itself is essential to performance and reliability since it provides mechanical insurance plan, thermal dissipation, and electrical connection from chip to printed-circuit board (PCB). fabric option also impacts the number of reflow steps required to complete assembly and packaging to the PCB as neatly as the LED’s skill to maintain colour and flux consistency over time and use.
We carried out a aspect-by means of-facet evaluation of 10 LEDs each and every of the competitor’s 3030 LEDs (Fig. 1, desirable) with our Luxeon 3030 HE Plus LEDs (Fig. 1, bottom). We put all 20 LEDs via two reflow cycles, which replicated the box case that spurred our investigation, after which established the LEDs at a lighting fixtures company’s facility for efficiency conforming to every LED manufacturers’ standards. Datasheets for each manufacturers’ LEDs detail that exposure to three reflow cycles is appropriate. We were attracted to exploring the reliability of latest LEDs with identical datasheet requisites and their abilities for electrical screw ups.
When delivered, LED A has already passed through one reflow cycle with tin- and silver-doped copper solder and a eutectic bonding manner with a purpose to attach the flip chip die to its leadframe. After the second reflow to attach the package to a PCB, we carried out typical sulfur testing the use of JIS C 60068-2-43, a verify condition Lumileds developed to determine mid-vigour product robustness in sulfur environments. That Lumileds verify is extra stringent than the IEC 60068 verify used by means of a lot of the industry, with Lumileds checking out the components at 40°C whereas the IEC specifies 25°C. each tests require an atmosphere with 15 PPM (constituents per million) of H2S (hydrogen sulfide), relative humidity of eighty%, for a duration of ninety six hours moreover the aforementioned temperature necessities. After the publicity, the look at various lab performs go-section and scanning electronic microscopy (SEM) imaging of failed contraptions. Early solder joint fatigue seems to be involving die bond fabric and leadframe fabric inside the kit where voids formed (Fig. 2).
LED B (Luxeon 3030 HE Plus) (Fig. 1, backside) makes use of silicone die bonding and an EMC leadframe, so die attach satisfactory is greatly extra legit. After undergoing the same two reflows and commonplace sulfur checking out, we accompanied no lifting or deformation of bonds. That’s as a result of Luxeon’s robust die bond design and EMC’s superior means to dissipate warmth.
FIG. 2. Solder deformation and void formation can cause electrical failures throughout lighting fixtures fixture use.sooner or later, 2 of the ten LED A test constituents confirmed die-connect solder element deformation (see neighborhood desk). Our benchmark assessments point out that while some LEDs have very similar appearance and flux, advanced substances and design correlate with colour balance and reliability. Silicone die bond and EMC leadframes improved undergo thermal processing. additionally, Lumileds gives 17,000 hours of LM-80 lumen renovation records for the Luxeon 3030 LED, guaranteeing consistent output from this mid-vigor LED.
It’s clear then that LED design issues and manufacturing competence can have an effect on container performance. Lumileds’ center of attention on robustness and reliability as well as first-class of mild metrics which are shown on datasheets cause greater container outcomes where screw ups may also be very costly. — Mei Yi, product & marketing supervisor, Lumileds
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table data courtesy of Lumileds.LED manufacturers take into account that many of the lengthy-term electrical failures and/or color shift in LEDs are caused by way of weak spots in LED kit design — not the LED chip itself. So it’s not going a shock that Lumileds constantly evaluates aggressive LEDs — peculiarly once we get stories from shoppers of complications in the container. What’s doubtless less well prevalent is the depth of analysis we undertake to better take note the science of LED performance.
FIG. 1. At a lighting fixtures company, competitor’s 3030 LEDs (appropriate) and Lumileds Luxeon 3030 HE Plus (bottom) were evaluated below various circumstances that test the best and performance of the gadget assembly materials and architectures. (picture credit: Illustrations and SEM pictures courtesy of Lumileds.)
FIG. 2. Solder deformation and void formation can cause electrical failures throughout lighting fixtures fixture use.sooner or later, 2 of the ten LED A test constituents confirmed die-connect solder element deformation (see neighborhood desk). Our benchmark assessments point out that while some LEDs have very similar appearance and flux, advanced substances and design correlate with colour balance and reliability. Silicone die bond and EMC leadframes improved undergo thermal processing. additionally, Lumileds gives 17,000 hours of LM-80 lumen renovation records for the Luxeon 3030 LED, guaranteeing consistent output from this mid-vigor LED.
