Sharp displays CPU-on-glass LCD

Sharp Corp. and its partner Semiconductor Energy Laboratory Co. Ltd. (SEL) unveiled Tuesday what the companies claim to be a world-first prototype of an LCD (liquid crystal display) with an 8-bit CPU (central processor unit) on its glass substrate.

Putting a CPU directly on the glass substrate of an LCD allows the display to function as a computer and makes possible the development of computers and televisions that can be thinner than 2 millimeters, they said.

Display makers, including Sharp, have been putting integrated circuits onto glass substrates for some time. Until now, that has meant putting driver ICs, which control the display, on the substrate. The advance announced by Sharp and SEL opens the possibility of putting an entire computer on a glass substrate, including a CPU, memory and other chips.

The prototype announced Tuesday was produced using Sharp's continuous grain silicon (CGS) technology. Sharp has been working on the development of LCDs that incorporate ICs and CGS since 1998.

CGS maintains atomic-level continuity at the crystal grain boundaries. This allows electrons to travel through the semiconductor 600 times faster than with conventional amorphous silicon, which is currently used to produce most LCDs, and approximately three times faster than low-temperature polysilicon, which is an emerging technology in the field.

The CPU used in the prototype screen produced by Sharp is a Zilog Inc. Z80 processor that contains 13,000 transistors and was manufactured using a 3-micron process. Zilog first produced the chip in 1976, Sharp said.

By 2005, Sharp hopes to develop a new breed of mobile display devices based on CGS, such as information terminals that are as thin as a credit card, said Mikio Katayama, general manager of Sharp's mobile-LCD group.

Join the newsletter!

Or
Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Kuriko Miyake

PC World
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?