Electronic display device having a plurality of pixel elements

Details Electronic display device having a plurality of pixel elements Electronic display device having a plurality of pixel elements

G - Physics

09

F

G09F 9/30 (2006.01) G09F 9/37 (2006.01)

Patent

CA 2043956

ELECTRONIC DISPLAY DEVICE HAVING A PLURALITY OF PIXEL ELEMENTS Abstract of the Disclosure A display device including a plurality of pixel elements arranged in matrix form. Each of the pixel elements can be set to one of two alternative states. In the first state, each pixel element includes a portion that transmits light and an adjacent portion that reflects light. In the second, alternate state, each pixel element includes a single portion that is substantially non-reflective. The display device includes a substrate having a plurality of hole disposed therein for respectively receiving a plurality of pixel elements. Each of the pixel elements includes a translucent member adapted to abut against the back side of the substrate and covers one of the holes therein; a mounting bracket adapted to abut against the front side of the substrate and having a fastener extending through the hole of the substrate and connecting to the translucent member for securing the translucent member to the substrate; a flap pivotally secured to the bracket about a pivot axis, one side of the flap having a non-reflective surface and the other side of the flap having a reflective surface, the flap being pivotal from a first position where the non-reflective surface faces outwardly towards a viewer to a second position approximately 180° from the first position where the reflective surface faces outwardly towards a viewer; a magnet disposed on the flap; an electromagnet secured to the back side of the substrate and having a pole piece disposed axially therein and extending into the translucent member; and a source for supplying electric current to the electromagnet so as to alternatively energize the pole piece to be a south pole piece or a north pole piece wherein when the pole pieces are energized to be either a north pole piece or a south pole piece the flap is pivoted to the first position and when the pole pieces are energized to be the other of the north pole piece and the south pole piece the flap is pivoted to the second position.

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