1987-10-06
1988-07-05
Miller, Stanley D.
350334, G02F 113
Patent
active
047550350
ABSTRACT:
A display assembly for an LCD device is disclosed wherein the LCD essentially comprises an elongated horizontal plate. The LCD is mounted in a recessed portion of the top surface of a carrier made of light transmitting material with preferably the back surface of the LCD contacting the carrier top surface. Beneath the LCD, the carrier has an effective wedge-shaped portion, or at least an inclined planar surface of the carrier, and a light source is effectively positioned adjacent the carrier. At least one retainer member is utilized to mount the LCD to the carrier with edges of the carrier top surface recessed portion laterally surrounding and thereby laterally locating the LCD device with respect to the carrier. The preceding configuration allows the carrier to provide for backlighting of the LCD since the carrier serves as a light pipe in addition to providing mounting structure for the LCD. Lateral extending portions of the top surface of the carrier are positioned adjacent to graphics, in a coverplate of the LCD assembly, which are to be backlighted. The retainer member may comprise a molded plastic part having two main planar extensions forming an angle less than the angle of the carrier end surfaces which mate with the retainer. Such retainer member has latching projections that engage the carrier such that a snap-together subassembly, capable of hand assembly, is provided comprising the carrier, the LCD and the retainer member.
REFERENCES:
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patent: 4252416 (1981-02-01), Jaccard
patent: 4277817 (1981-07-01), Hehr
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"An LCD Display Assembly", by Steven P. Kopish and Ronald E. Petersen, Motorola Technical Developments, vol. 2, Jan. 1982, pp. 51-52.
"Light Balancing for Multiple Gauges", by Tom R. Kawall, Motorola Technical Developments, vol. 4, Apr. 1984, pp. 40-41.
"Lighting Arrangement for Instruments", by Tom R. Kawall, Motorola Technical Developments, vol. 4, Apr. 1984, pp. 48-49.
Kopish Stephen P.
Rokita Steven
Shababy Michael L.
Melamed Phillip H.
Miller Stanley D.
Motorola Inc.
Phan Trong Quang
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