Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
?
EE Times-Asia > Optoelectronics/Displays
?
?
Optoelectronics/Displays??

Sanyo Epson makes LCD with pixel-integrated RAM

Posted: 31 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Sanyo Epson? imaging? devices? RAM? LCD?

Sanyo Epson Imaging Devices Corp. has announced the development of a 2.8-inch transflective low-temperature polysilicon LCD with pixel-integrated RAM that offers low power consumption.

The fusion of telecommunications and broadcasting through digitization and the seamless integration of cable and mobile communication in the network society have raised expectations for the next-generation mobile devices and for the improved convenience these devices will bring. Moreover, consumers are increasingly demanding that small and medium-sized LCDs for mobile devices should have high resolution and be slim and energy efficient. To meet these demands, Sanyo Epson said it has developed products and technologies based on the concept of supplying clear, user-friendly displays that can be used anytime, anywhere.

Used in many mobile devices, transflective LCDs combine a transmissive mode in which a built-in backlight illuminates the display with a reflective mode in which the display is lit by external light. While they are known for their low power consumption, in most cases the screen either completely blacks out or displays information only partially when in energy-saving sleep mode.

In developing the 2.8-inch transflective LCD with built-in RAM, Sanyo Epson has cleared the challenge of integrating static RAM (SRAM), which stores the final data displayed on the screen, into the pixels and has equipped the LCD with the ability to switch between 256k-color and eight-color modes. When in active mode, such as during input, the screen displays in 256k-color mode. When in sleep mode, meanwhile, the LCD is able to continue displaying the final screen recorded by the SRAM in eight colors. In this mode, the display uses the reflective method and does not require a backlight. A color image can continue to be displayed using little power in this state, because there is no need for drive voltage to power the writing of data or a backlight.

This fully RoHS-compliant LCD will be commercialized both in Japan and overseas for use in mobile phones and other portable devices, as well as in new applications.




Article Comments - Sanyo Epson makes LCD with pixel-int...
Comments:??
*? You can enter [0] more charecters.
*Verify code:
?
?
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

?
?
Back to Top