Matrix-addressed flat panel display having a transparent base plate

• US 5,216,324 A
• Filed: 06/28/1990
• Issued: 06/01/1993
• Est. Priority Date: 06/28/1990
• Status: Expired due to Fees

• Current Assignee: Coloray Display Corporation A Corporation OFCA
• Original Assignee: Coloray Display Corporation
• Inventors: Curtin, Christopher J.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Patel, Ashok
• Application Number:
  US07/545,988
• Time in Patent Office: 1,069 Days
• Field of Search: 313/495, 313/496, 313/497, 313/422, 313/309, 313/336, 313/495, 313/495, 313/497, 340/773, 340/771, 340/772, 340/784, 340/752, 340/717, 340/784 H, 340/781
• US Class Current: 313/495
• CPC Class Codes: H01J 2329/8625 Spacing members
• CPC Class Codes: H01J 31/127 using large area or array sources, i.e. essentially a source for each pixel group

Abstract

A matrix-addressed flat panel display is disclosed herein and includes a face structure having a phosphor coated viewing surface and a transparent backing structure spaced a predetermined distance from and in confronting relationship with the viewing surface of the face structure. The display also includes a matrix array of individual electron generating elements positioned between the backing structure and the face structure and address means for energizing selected ones of the electron generating elements so as to establish a desired light pattern on the viewing surface of the face structure. This matrix array and address means are configured such that the desired light pattern is readily viewable through the backing structure, matrix array and address means.

Claims

1. A flat panel display, comprising:

(a) a face structure having a viewing surface;

(b) a transparent backing structure spaced a predetermined distance from and in confronting relationship with the viewing surface of said face structure;

(c) a matrix array of individually addressable electron generating means positioned on said backing structure, between the latter and said face structure, and address means for energizing selected ones of said electron generating means so as to establish a desired light pattern on said viewing surface, said matrix array and said address means being configured such that the desired light pattern is readily viewable through said backing structure, said matrix array, and said address means; and

(d) an accelerator plate structure positioned on the interior side of said face structure for attracting electrons and including luminescing means for reflecting some of said light pattern back toward said viewing surface.

2. A flat panel display according to claim 1 wherein said matrix array of individually addressable electron generating means comprises a matrix array of addressable cathodes positioned between said backing structure and said face structure, wherein said accelerator plate structure is made of an electrically conductive mirrored substrate, and wherein said luminescing means reacts to bombardment by electrons emanating from said cathodes by emitting visible light.

3. A flat panel according to claim 2 wherein said address means includes a matrix array of electrically conductive leads located across said transparent backing structure.

4. A flat panel display according to claim 3 wherein said leads are constructed of thin opaque metal strips.

5. A flat panel display according to claim 3 wherein said leads are constructed of transparent strips.

6. A flat panel display according to claim 3 wherein said backing structure is constructed of a dielectric material and wherein said leads forming said matrix array of electrically conductive leads are sufficiently thin to expose areas which are on said dielectric backing structure and which confront said face structure, said display including a plurality of metal pillars normal to and extending between said exposed areas on said face structure and serving as spacers between said structures.

7. A flat panel display according to claim 6 wherein said exposed areas comprise approximately 75% of said transparent backing.

8. A flat panel display according to claim 7 wherein said electrically conductive leads are constructed of metal and are individually approximately 0.5 mil wide.

9. A flat panel display according to claim 1 wherein said accelerator plate structure includes an electrically conductive mirrored substrate directly behind said luminescing means and serving as a means of reflecting some of said visible light and as an accelerator plate for said electrons.