Apple's iPad Air Adopts IGZO Technology for Thinner, Lower-Power Displays

Apple's new iPad Air marks a significant technological step forward for the company, improving performance while reducing the device's volume and weight by over 25%. Much of the size and weight savings have been enabled by improved power efficiency, allowing Apple to reduce the device's battery thickness and capacity by roughly the same 25%.

ipad_air_thin

Component thickness reduction in iPad Air

As noted in IHS iSuppli's component cost analysis released earlier today, the iPad Air now uses just 36 LEDs to light its display, down from as many as 84 in previous generations. Apple has also reduced the thickness of the display assembly, and so it appears that the display is indeed one of the areas where Apple has been able to make the most improvement on size and weight, both in the components themselves and in the battery capacity needed to drive them.

In a new analysis comparing the iPad Air's display to that of the Kindle Fire HDX 8.9 and the Google Nexus 10, Ray Soneira of DisplayMate Technologies confirms that Apple has indeed changed display technologies in the iPad Air, moving to indium gallium zinc oxide (IGZO) semiconductor materials from the amorphous silicon (a-Si) compounds used in previous iPads. While rumors of Apple moving to IGZO for the iPad and other products have circulated for several years, Sharp has experienced difficulties ramping up production and it has taken until now for Apple to bring the technology to its products.

ipad_air_heroAmong the evidence cited by Soneira for his claim that the iPad Air has moved to IGZO technology are power measurements showing that the iPad Air's display offers a 57% improvement in power efficiency compared to previous iPads, a jump that simply would not be possible with a-Si technology. IGZO offers significantly better electron mobility than a-Si, allowing for much lower power requirements. The shift in technology has also enabled other improvements in the display of the iPad Air compared to its predecessor, and Soneira notes that Apple continues to offer an excellent display on its tablet lineup.

Compared to the 4th generation, the screen Reflectance decreased by 23 percent, the Peak Brightness increased by 7 percent, and the Contrast Rating for High Ambient Light increased by 32 percent – all good. Absolute Color Accuracy and Image Contrast fidelity are very good (but somewhat below the Kindle Fire) and are discussed in detail below. The emphasis for the iPad Air is in reduced size, thickness, and weight. The most important under the hood display improvement is the switch from a-Si amorphous Silicon LCDs up to a much higher performance IGZO LCD backplane, which was discussed in our iPad 3 Display Shoot-Out article last year. The switch to IGZO produces an impressive 57 percent improvement in display power efficiency from previous Retina Display iPads – so the iPad Air doesn’t get uncomfortably warm like the earlier iPads.

MacRumors spoke with Soneira about the state of the display industry and Apple's potential plans for the future, and Soneira noted that he expects the Retina iPad mini launching later this month to also adopt IGZO technology. If anything, a move to IGZO is more important on the iPad mini than on the iPad Air due to higher pixel density on the smaller device, with a-Si being infeasible for a Retina display at that size.

While the iPad Air's display is excellent, Soneira notes Apple is no longer at the top of the heap, with Amazon's Kindle Fire HDX 8.9 display actually performing better than the iPad Air's display. This is made possible by Amazon's use of low temperature polysilicon (LTPS) technology, which offers even better performance and lower power requirements than IGZO.

LTPS is commonly used on displays for smaller devices such as the iPhone, but Amazon has pushed the technology to the edge by bringing it to tablet-sized displays despite high costs and complicated production. Apple is unlikely to follow Amazon's lead in the near future, in large part due to scalability issues that simply won't support the tens of millions of tablets Apple is producing each year.

IGZO also offers a more natural transition for display manufacturers, as they can in many cases simply upgrade their existing equipment from current a-Si production, while moving to LTPS would require a complete change in production. IGZO is also just the first of a number of metal oxide semiconductors that show promise for improved display performance, pointing to solid opportunities for the technology to continue to evolve.

Overall, Soneira notes that the iPad Air display has seen a very solid incremental upgrade, although he does have a few quibbles such as the continued presence of an air gap between the display and the cover glass when Apple has been moving toward laminating the two components together in other products. And with Amazon able to pursue LTPS technology for the Kindle Fire HDX due to its smaller size and lower unit volumes, Apple is finding itself facing stiffer competition in displays where it has long been the industry leader.

Related Roundup: iPad
Tag: IGZO
Buyer's Guide: iPad (Neutral)
Related Forum: iPad

Top Rated Comments

LagunaSol Avatar
113 months ago
I get so tired of Apple not innovating and stuff. ;)
Score: 21 Votes (Like | Disagree)
iapplelove Avatar
113 months ago
I love my air.
Score: 19 Votes (Like | Disagree)
Taz Mangus Avatar
113 months ago
From what I read, WOW :eek:

I can't wait to get my iPad Air which arrives tomorrow. Coming from a iPad 1 to iPad Air.
Score: 18 Votes (Like | Disagree)
emseven Avatar
113 months ago
Picture this: 12" Macbook Air with Retina IGZO display in 2014. 12 hours battery life.
Score: 18 Votes (Like | Disagree)
NorEaster Avatar
113 months ago
I get so tired of Apple not innovating and stuff. ;)

Are you saying this because you think Apple invented IGZO? Do you also think Apple is the first to release a product utilizing IGZO?
Score: 8 Votes (Like | Disagree)
0029937 Avatar
113 months ago
I had my heart set on IGZO so when they announced the Air and said nothing about it, I was so pissed off at Apple for not having used this technology. I came very close to not buying the iPad and waiting until the next gen with IGZO came out. With its excellent marketing, I wonder why they dont advertize this or that they use Gorilla Glass for example. They could lose a lot of customers. Its really amazing technology and the only complaints I had with the iPad was because of no GG or IGZO. Just add RAM in the next gen and it will be perfect.

I shared your confusion but after thinking about it, it actually makes a lot of sense. They want to advertise "The iPad." They don't want you thinking of any other company or technology. They don't want you to think Gorilla Glass or IGZO made the product great, it was Apple who made it fantastic. ;) I think putting too many names and technologies with an announcement downplays the master creator in a sense. Of course the geek in all of us wants to know the specs! But they're more concerned selling this stuff to the average consumer than the 1% spec drooling nerds. :)
Score: 8 Votes (Like | Disagree)

Popular Stories

airpods pro 2 1

AirPods Pro 2 No Longer Expected to Feature Built-In Heart Rate or Body Temperature Sensor

Sunday July 3, 2022 8:07 pm PDT by
While past rumors have indicated the upcoming second-generation AirPods Pro will feature a built-in heart rate and body temperature sensor, Bloomberg's Mark Gurman has cast doubt on those rumors turning out to be true, saying instead such a feature is unlikely to come anytime soon. "Over the past few months, there have been rumors about this year's model gaining the ability to determine a...
Apple Watch 8 Unreleased Feature Thumb

Apple Watch Series 8 Model Rumored to Feature 5% Larger Display

Monday July 4, 2022 5:50 am PDT by
Apple is working on an Apple Watch Series 8 model with a larger display, according to DSCC's Ross Young and Haitong International Securities's Jeff Pu. In October last year, Young suggested that the Apple Watch Series 8 could come in three display sizes. Now, responding to a query about the rumor on Twitter, Young claims that the additional display size joining the Apple Watch lineup will be ...
intel go pc justin long

Windows Laptop Makers 'Worried' About New MacBook Air Impacting Sales

Tuesday July 5, 2022 6:57 am PDT by
The upcoming launch of Apple's redesigned MacBook Air with the M2 chip has some Windows laptop manufacturers "worried" that sales of Intel-based laptops will be negatively affected, according to industry sources cited by DigiTimes. "A Wintel brand vendor pointed out that at a price point of US$1,000-$1,500, the MacBook Air will crowd out other high-end notebooks," the report claims, with...
European Commisssion

EU Approves Landmark Legislation to Regulate Apple and Other Big Tech Firms

Tuesday July 5, 2022 5:53 am PDT by
European Union lawmakers have approved landmark legislation to heavily regulate Apple, Google, Meta, and other big tech firms. The Digital Markets Act (DMA) and Digital Services Act (DSA) were proposed by the European Commission in December 2020. Now, collected in a "Digital Services Package," the legislation has been formally adopted by the European Parliament and seeks to address...
macbook air m2 order date feature

Apple Announces MacBook Air With M2 Chip Available to Order Starting July 8, Launches July 15

Wednesday July 6, 2022 4:59 am PDT by
Apple today announced that the new MacBook Air equipped with the M2 chip will be available to order starting Friday, July 8 at 5 a.m. Pacific Time. Apple said deliveries to customers and in-store availability will begin Friday, July 15. MacRumors exclusively reported that Apple planned to launch the new MacBook Air on July 15, and the date has now been confirmed by Apple. Customers will be...
top stories 2jul2022

Top Stories: M2 MacBook Air Release Date, New HomePod Rumor, and More

Saturday July 2, 2022 6:00 am PDT by
The M2 MacBook Pro has started making its way into customers' hands and we're learning more about how it performs in a variety of situations, but all eyes are really on the upcoming M2 MacBook Air which has seen a complete redesign and should be arriving in a couple of weeks. Other top stories this week included a host of product rumors including additional M2 and even M3 Macs, an updated...
Lockdown Mode Feature

Apple Announces New Lockdown Mode on iOS 16 With 'Extreme' Level of Security

Wednesday July 6, 2022 10:00 am PDT by
Apple today announced a new Lockdown Mode coming to the iPhone, iPad, and Mac with iOS 16, iPadOS 16, and macOS Ventura. Apple says the optional security feature is designed to protect the "very small number" of users who may be at risk of "highly targeted cyberattacks" from private companies developing state-sponsored spyware, such as journalists, activists, and government employees. Apple...
siri remote 3

Apple Releases Firmware Update for Apple TV Siri Remote

Tuesday July 5, 2022 12:10 pm PDT by
Apple today released new firmware for the Siri Remote designed for the Apple TV, updating the software from version 9M6772 to 10M1103. The software is for the redesigned Siri Remote that was released in May 2021, aka the gray remote with the updated interface. In the Apple TV settings, the new firmware will display as 0x0070, up from 0x0061. There is no word on what's new with the Apple TV...