LIQUID CRYSTAL DISPLAY DEVICE

• US 3,612,654 A
• Filed: 05/27/1970
• Issued: 10/12/1971
• Est. Priority Date: 05/27/1970
• Status: Expired due to Term

• Current Assignee: Richard Ira Klein, Sandor Caplan
• Original Assignee: Richard Ira Klein, Sandor Caplan
• Inventors: Klein, Richard Ira, Caplan, Sandor
• Primary Examiner(s): Wibert, Ronald L.
• Assistant Examiner(s): Evans, F. L.
• Application Number:
  US05/040,788
• Time in Patent Office: 503 Days
• Field of Search: 350/160
• US Class Current: 349/113
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

The device comprises a front transparent substrate having a transparent electrode on the inner surface thereof, a rear substrate, and a liquid crystal material disposed between the two substrates. The inside surface of the rear substrate is covered with a light-reflecting material, e.g., silver, covered in turn with a thin layer of dielectric material, e.g., silicon dioxide. Disposed on the dielectric layer is a patterned electrode of either a transparent material, e.g., tin oxide, or a lightreflecting material, e.g., silver.

Claims

1. A liquid crystal device comprising:

a front transparent substrate, a rear substrate, and a crystal material therebetween, a transparent first electrical conductor on said front substrate, a laminate disposed on said rear substrate and comprising, in the named order towards said front substrate, a light reflector for reflecting light in the direction of said front substrate, a thin film insulator, and a second electrical conductor, at least portions of said first and second conductors overlapping one another.

2. A device as in claim 1 wherein said first electrical conductor is disposed on the inside surface of said front substrate, and said laminate is disposed on the inside surface of said rear substrate.

3. A device as in claim 2 wherein said second conductor is transparent.

4. A device as in claim 2 wherein said second conductor is light reflective towards said front substrate.

5. A device as in claim 2 wherein said second conductor comprises two electrically isolated segments.

6. A device as in claim 2 wherein said first conductor comprises two electrically isolated segments, and said second second conductor two electrically connected segments.

7. A device as in claim 6 including a connector means disposEd on said insulator connecting said second conducting segments, a projection of said connector means onto said first substrate not intercepting any portion of said first conductor thereon.