Portable terminal device having a display unit utilizing a...

Details Portable terminal device having a display unit utilizing a... Portable terminal device having a display unit utilizing a...

2006-09-19

2006-09-19

Vo, Nguyen T. (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C345S032000, C379S433040

Reexamination Certificate

active

07110796

ABSTRACT:
A portable terminal device, which employs a display unit utilizing a holographic screen, a main housing, a holographic screen, and an optical system. The holographic screen is disposed at a predetermined portion of the main housing while being exposed to an exterior of the main housing. The holographic screen optically displays information by means of image-light which is projected to the holographic screen. The optical system is spaced apart from the holographic screen and provides the holographic screen with the image-light.

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European Search Report dated May 14, 2003, issued in a counterpart application, namely, Appln. No. 02025053.6.

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