Browse Prior Art Database

Two Dimensional LED Scanning Display

IP.com Disclosure Number: IPCOM000085354D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Paton, A: AUTHOR

Abstract

This is a one-line display which, for example, may be used with a typewriter. A plurality of line segment light-emitting diodes (LEDs) are viewed through suitable shutters, while simultaneously being scanned by a transparent dielectric block.

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Two Dimensional LED Scanning Display

This is a one-line display which, for example, may be used with a typewriter. A plurality of line segment light-emitting diodes (LEDs) are viewed through suitable shutters, while simultaneously being scanned by a transparent dielectric block.

In Fig. 1, a viewer 2 looking in the direction of arrow 3 views a display device
4. The display 4 includes a polygonal shaped transparent block 5, which for example may be LUCITE*, and shutters 6 and 7 which are cylindrically wrapped and fixed to faces 8 and 9, respectively, of block 5. The shutters 6 and 7 may be made from a thin material such as 2 mil stainless steel with slots formed in predetermined locations by photolithography or the like. An array of line segment LEDs 10 are in alignment with the direction of viewing 3 and the respective slots, such that the viewer 2 views the emitted light from the LEDs through the slots as the block 5 rotates about its longitudinal axis 11 in the direction of an arrow 12.

Fig. 2 is a broken view of the shutters 6 and 7 and the array 10 of line segment LEDs. As the block 5 (Fig. 1) rotates in the direction of arrow 12, shutter 7 passes array 10 and light from LEDs 13, 14 and 15 is passed through slots 16, 17 and 18, respectively, and face 19 (Fig. 1) of block 5 to the viewer 2. Next, shutter 6 passes array 10, and light from LEDs 13, 14 and 15 is passed through slots 20, 21 and 22, respectively, and face 23 to the viewer 2. * Trademark of E. I. du...