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Tiny display optimized for video on handheld devices

Posted: 11 Nov 2004 ?? ?Print Version ?Bookmark and Share

Keywords:sharp microelectronics? qcif+? advanced-tft lcd module? ad-tft lcd module? lq022b8ud04?

Designers of new multi-content mobile devices that must carefully balance cost, size, weight and performance have another choice when it comes to small displays.

Sharp Microelectronics of the Americas has developed a new 2.2-inch QCIF+ Advanced-TFT LCD (AD-TFT LCD) module that is capable of displaying full-motion video and images on a standard cellphone size display. Sharp says it's the first company to offer this size display as a standard part for mobile phones and other portable handheld devices.

Providing a combination of optimal cost, display technology and power efficiency for multi-functional mobile devices, these thin, lightweight high-resolution color display modules feature low power consumption, fast response time and support full-color motion.

To reduce power consumption, the LQ022B8UD04 display module is backlit using white LEDs and can be used in different modes to reduce color, reduce refresh rate, or to write to only part of the screen, said the company. Power consumption is rated at

Developed using Advanced-TFT (Transflective) display technology with an emphasis on reflectivity, display images are readable in a full range of ambient lighting conditions both indoors and outdoors. The QCIF+ (176 x 200) display offers 16bit RGB color depth. The outline dimension of the display module measures 42.1(W)-by-56.6(H)-by-4.2(?)mm. The active area measures 34.848(W)-by-43.56(H)mm.

In addition, the new 2.2-inch QCIF+ AD-TFT is one of the key components of a new Sharp reference design kit for lower-cost portable media players (PMP) that can play audio, slide shows and video content on a single application. Designed to speed time-to-market and lower system costs, the reference design provides complete hardware and software solutions and features Sharp's bluestreak lh7a404 arm9 SoC as the display interface.

The reference design kit also supports all major audio, video and imaging standards including WMA, AAC, MP3, MPEG4, XviD and JPEG. It includes an integrated 1-inch microdrive, removable MMC/SD media support, full-speed USB 2.0 interface, NTSC/PAL output and rechargeable Li-ion battery operation. The kit also provides one functional sample unit and a CD-ROM that contains software including OrCAD schematics, gerbers, board-support packages and applications source code that is fully documented. API documentation can be used to extend the functionality of the system.

Sharp also offers a reference design using a 3.6-inch QVGA landscape display for mid-range portable media players.

The suggested price for a one-piece engineering sample is $80.

- Gina Roos

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