Inventors:
Wayne Hwang - West Linn OR
Jim Hwang - West Linn OR
Memiee Hwang - West Linn OR
Richard Hwang - West Linn OR
International Classification:
G06F 116
Abstract:
A portable computer includes: a main body having keyboard formed thereon, a cover pivotally secured to the main body and operatively covering the main body, a liquid crystal display panel formed on the cover, a backlight cartridge having a backlight and a light diffusion plate normally positioned under the liquid crystal display panel for illuminating the liquid crystal display (LCD) panel for normally displaying the image on the LCD panel, a bottom projection cartridge alternatively substituting the backlight cartridge and positioned under the LCD panel when adapted for overhead projection purpose, a supporting device pivotally secured and normally folded on the cover (or on the main body) and operatively telescopically extended from the cover (or from the main body) to be uprightly erected on the cover (or the main body), and an overhead projection cartridge detachably mounted on the supporting device for projecting light towards the bottom projection cartridge, through which the light is then reflected and magnified upwardly through the LCD panel for projecting the image of the LCD panel upwardly to be magnified and reflected towards a screen through the overhead projection cartridge, thereby providing a compact combination of a portable computer with an overhead projection device for convenient handling and uses.