Tuesday, June 5, 2012

Head-Tracking 3DTV

Another I-Zone innovation was demonstrated by PolarScreens. The system relies on a head-tracking system to drive a no-glasses 3D display that uses a regular 120 Hz LCD panel plus a patterned active shutter panel to steer the separate images to the viewer’s two eyes. According to the company, the system can deliver the full resolution to each eye.

The system is also designed to “fail” gracefully. If you turn your head sideways to the point where the stereoscopic effect cannot be maintained, the display automatically switches to 2D mode. The head-tracking system can see when your eyes are close enough to horizontal again, and it will turn the 3d mode back on automatically.

Information Display’s own Steve Atwood took the system for a test drive, as seen in the photograph below. A demonstration screen displayed what the system camera saw, and how it was able to identify the major features on Steve’s face, such as his eyes (in spite of his substantial beard).

The system is intended for a single viewer, and is aimed at high end applications where the user may be moving around but still needs to see a high-resolution 3D auto-stereoscopic image. This design could be well suited for people who edit 3D movie and video content, and have to move around or look back and forth at other screens while working.--Alfred Poor, HDTV

The Master of Touch

Jeff Han, the Founder and CTO of Perceptive Pixel, demonstrated once again in his presentation today at the Display Week Investors Conference that he is the Master of Touch. What I mean by that is that Jeff consistently has the clearest vision of how touch needs to evolve to allow professionals to accomplish real work using touch, and he articulates that vision with exceptional clarity. Perceptive Pixel isn’t a touch-screen company – although it does make and sell a high-end 27-inch touch monitor; it's a company dedicated to inventing solutions to user interface problems in the knowledge-worker world.

Presentations at the Investors Conference aren’t frequently reported in Display Week coverage, perhaps because the conference is somewhat specialized and takes place during the first day of exhibits. The conference, which is run by Cowen and Company, the leading growth investment-banking firm focused on the display and touch-screen supply chain, is an excellent venue for learning more about important private and smaller public firms in the sector. This is the 8th time the conference has taken place; there were presentations by nine public and eight private companies.

It’s particularly difficult to describe a Jeff Han presentation because (a) he always presents at lightning speed, (b) he usually makes heavy use of simultaneous video, text and spoken content, and (c) he never gives the audience a copy of his slides. Jeff started his presentation today by making the same point that I made in my Sunday Short Course and Monday Seminar on touch: projected capacitive (p-cap) has won the war. It’s over. A billion users now expect touch to work like p-cap. If another touch technology provides a different user experience, the user is likely to be uncomfortable with it or simply reject it. Jeff believes that the touch industry therefore needs to focus on figuring out how to use p-cap to solve user interface problems beyond simply zooming an image on a smartphone or tablet.

With this goal in mind, Perceptive Pixel has figured out how to scale p-cap to unlimited sizes with no visible electrodes (unlike current large-format p-cap implementations that use visible 10-micron-wire electrodes). Jeff said that even 200 inches is no problem; if there is a display that large, Perceptive Pixel can make a p-cap touchscreen for it. The largest the company has actually demonstrated so far is 82 inches (at CES 2012) because that was the largest display it could easily buy. (This product also just won a 2012 Silver Display Industry Award from SID for Display Application of the Year.) The key elements of Perceptive Pixel's solution are (a) a custom, extremely high-performance p-cap controller re-imagined from the ground up, and (b) a method of applying invisible non-ITO p-cap electrodes on glass. Jeff showed a variety of demo videos of commercial touch applications on screen sizes ranging from a 27-inch reclining desktop monitor to a 20-foot wall of tiled touch-displays. The applications included broadcast-screen manipulation, 3D CAD, manipulation of multi-dimensional oil-well-exploration data sets, and many, many more. The impression this barrage of sophisticated touch applications makes is far beyond anything else I’ve ever seen from any other company in the touch industry. It’s so intense that it’s very difficult to describe.

Jeff ended his presentation with a video demo showing why simultaneous touch and stylus is highly desirable. (His implementation of p-cap, by the way, is capable of this at any size.) The demo showed an artist making changes in a sketch using a stylus in his right hand. The artist’s left hand was sometimes resting on the screen doing nothing (yet not interfering in any way) and sometimes adjusting the perspective of the drawing or making other control-type changes. The transition of the artist’s left hand between resting and active was almost imperceptible – unless the hand was making a specific gesture or touching a control spot, the application ignored it. This is what “ignoring unintended touches” is really all about; this is why Perceptive Pixel’s p-cap controller supports “an infinite number of touches”.

What I saw was both electrifying and frustrating. It was electrifying because the clarity and articulation of Jeff’s vision (and Perceptive Pixel’s execution) of what touch should be is so great that it literally leaves your mouth hanging open. It was frustrating because the only time Jeff’s vision is exposed is at two or three conferences a year. Since he never provides a copy of his slides at those conferences, there’s nothing to remind you later of what you experienced and of his thoughtful insights into the touch industry. I hope we'll hear more in future from the Master of Touch. -—by Geoff Walker, Walker Mobile, LLC

Monday, June 4, 2012

P-CAP LCD Integration and Alternate Transparent Conductors

Two great seminars today were given by Bob Mackey of Synaptics and Geoff Walker of Walker Mobile. While we all know projected-capacitive touch technology, commonly called "P-CAP" is taking off in handheld and mobile applications, I don't think I realized just how complex the options were for implementation and integration with LCD and OLED panels. A great deal of investment has been made to explore ways of integrating the technology directly into the LCD cell and combining it with the LCD manufacturing process. Some say this is the future; some, like Geoff, think this is a long shot because of all the existing business infrastructure around LCD module integrators, an estimated $8 billion or so. These are the companies that combine the LCDs and the P-CAP touch panels into modules for the device manufacturers. I guess we'll see how it all turns out.

I also learned that there has been some real innovation and progress in the area of alternative transparent conductors - essentially options for ITO replacement. Silver nanowires, carbon nanotubes, blackened copper mesh, and various other technologies are not yet ready for wholesale deployment but they are gaining traction. ID magazine recently covered the development by Cambrios of wet-processed silver nanowires and since then Cambrios has seen the launch of the "Cricket" smart phone by Samsung, which used its silver nanowire material for the touchscreen, along with Synaptics electronics. Still, as Bob Mackey pointed out, the perceived shortage of Indium is not nearly as bad as people have been saying, and the economic motivation for these alternative materials may not be as severe as we think. – Steve Atwood, Executive Editor, ID magazine

Display History Is on Exhibit at the Show

If you have not had a chance to see it yet, the exhibit of 50th Anniversary Display Archives is now up and running in the main lobby at Display Week, just to the left of the registration desk. Our centerpiece is a Toshiba 32-in. TFT-LCD TV, which represents the first introduction of overdrive technology, called the “low image-lag driving method,” to improve gray level and motion-picture response time. It achieved a factor of four or greater improvement compared to conventional methods, reducing the gray-to-gray pixel-response time to less than 16.7 milliseconds. Toshiba’s achievement was recognized by the Society for Information Display in 2004 with a Special Recognition award and by the Japan Institute of Invention and Innovation with its Imperial Invention Prize in 2009.

We also have an original Candescent Field-Emission Display (FED) based on cold-cathode field emission developed at SRI International and further improved by Candescent in the mid-1990s. This 13-in. diagonal sample was built on a 320 x 340 mm substrate development line in San Jose, CA. FED technology was one of my favorite alternatives to CRT at that time and I still remember all the efforts put forth to try to make it work commercially.

The other items in the collection include early active-matrix LCDs, numeric displays with a variety of technologies, and a Sony CRT Watchman, the first truly handheld portable TV product from the early '80s. – Steve Atwood, Executive Editor, ID magazine

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Corning and LG to Show New Products at Display Week

The Display Week exhibit starts tomorrow (Tuesday June 5) with a special ribbon cutting ceremony at 10:30 am in front of the Boston Convention and Exhibition Center. Don't miss it!

Several companies are issuing announcements prior to the show, and a couple of the more intriguing ones come from LG and Corning. LG will be showing its 55-in. OLED TV, which will be hard to miss on the show floor, due to its size and the number of people crowding around it. LG will also be showing, for the first time, a 5-in. Full HD LCD panel. The panel, with a 16:9 aspect ratio, is based on AH-IPS (Advanced High Performance In-Plane Switching) technology and features 440ppi and 1920x1080 resolution.

Also on display will be Corning's new Willow Glass, an ultra-slim flexible glass produced using the company’s proprietary fusion process to make glass that is 100 microns thick – about the thickness of a sheet of copy paper – and can be "wrapped" around a device or a structure.

Sunday, June 3, 2012

Display Week 2012 is underway! The skies of Boston are gray, so it's an excellent day to stay inside and learn something.

Today' 4-hour "short courses" cover fundamentals in OLED lighting technology, flexible displays, touch technology and applications, and active-matrix devices and applications. These short courses, presented by world-reknowned experts in their fields, are a great way to build or strengthen your understanding of a particular area of display technology.

Tomorrow's lineup includes 20 applications and technology seminars on topics ranging from 3D Computer Vision to Micro-second Response Time in Blue-Phase LCDs, as well as the Business Conference and the Investors Conference. Topics to be covered in both conferences are very timely, and I'm particularly intrigued by "Do OLEDs and TFT-Oxides Change the Display Market Outlook?," which is being presented at 11:15 in tomorrow's Business Conference.

In case you hadn't already heard, The International Committee for Display Metrology (ICDM) and the Society for Information Display (SID) have announced the release of the Information Display Measurements Standard (IDMS. The IDMS is a much-needed document that will provide standard measurement procedures to quantify electronic display characteristics and qualities. It has been a long time in the making and it's exciting that it's going to be available at Display Week this year. A very limited number of copies will be available for sale at the SID book store at the show (so get there soon!), but the standard will also be available as a free download from the ICDM home site at www.icdm-sid.org as well as the SID website at www.sid.org. --Jenny Donelan, Managing Editor, ID magazine