Mitsubishi to Release TFT LCD Module with 90% Lower Reflectance

Mar 17, 2009
Megumi Yoshizawa, Nikkei Microdevices

Mitsubishi Electric Corp will add three new products to its "Diafine" industrial TFT LCD module series. The light reflectance of the new products is about 90% lower than that of their predecessors.

The company reduced the light reflectance by resin-bonding a 3mm protective glass panel on the entire surface of the module. External light reflection and image reflection on the screen can be reduced even when it is used in outdoor equipment including POS, ATM and kiosk installations.

When TFT LCD modules are used outdoors, a protective glass panel is attached to the surface by final product manufacturers to prevent water intrusion and scratches. In general, a protective glass panel and a TFT LCD module are separately manufactured, and, for example, bonded at the edges only.

With this method, however, a layer of air is created between the protective glass and the screen, deteriorating visibility due to external light reflections and causing intrusion of foreign particles and soiling. To solve those problems, some final product manufacturers resin-bond a protective glass and the entire surface of a module. But this increases the number of assembly processes and causes many troubles.

This time, Mitsubishi Electric will release the "AA090MC01-G," a 9-inch WVGA (800 x 480 pixels) model, the "AA121TA01-G1," a 12.1-inch WXGA (1,280 x 768 pixels) model and the "AA141TA04-G1," a 14.1-inch WXGA model.

The contrast ratio is 600:1 for the 9-inch and 12.1 inch models, while it is 700:1 for the 14.1-inch model. The luminance is 600cd/m2 for the 9-inch model, 400cd/m2 for the 12.1-inch model and 550cd/m2 for the 14.1-inch model. The guaranteed operating temperature ranges from -20°C and +70°C for the three models.

The sample price ranges from ¥100,000 to ¥140,000 (approx US$1,018-1,425). Sample shipments will start May 1, 2009.

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