Optical interference display panel

• US 7,307,776 B2
• Filed: 03/24/2004
• Issued: 12/11/2007
• Est. Priority Date: 08/15/2003
• Status: Expired due to Fees

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: Qualcomm, Inc.
• Inventors: Tsai, Hsiung-Kuang, Miles, Mark W.
• Primary Examiner(s): Lester, Evelyn A.
• Application Number:
  US10/807,147
• Publication Number:
  US 20050035699A1
• Time in Patent Office: 1,357 Days
• Field of Search: 359290-295, 359/298, 359/223, 359/224, 345/48, 345/84, 345/85, 345/108, 348/750, 348/755, 348/770, 348/771
• US Class Current: 359/291
• CPC Class Codes: G02B 26/001 based on interference in an adjustable optical cavity interference filters G02B5/28; devices or arrangements using multiple reflections in spectrometry or monochromators G01J3/26

Abstract

An optical interference display panel is disclosed that has a substrate, an optical interference reflection structure, and an opaque protection structure. The optical interference reflection structure has many color-changeable pixels and is formed on the substrate. The opaque protection structure is adhered and fixed onto the substrate with an adhesive and encloses the optical interference reflection structure between the substrate and the opaque protection structure. The opaque protection structure blocks and/or absorbs light, and light is thus not emitted outward by passing through defects in the optical interference reflection structure. Moreover, the opaque protection structure and the adhesive also prevent the optical interference reflection structure from being damaged by an external environment.

Claims

1. An optical interference display panel, comprising:

a first substrate;

an opaque protection structure, adhered to the first substrate with an adhesive; and

an optical interference reflection structure, located between the first substrate and the opaque protection structure;

wherein the opaque protection structure covers the optical interference reflection structure and prevents light from passing through a defect in the optical interference reflection structure and causing a bad pixel.

2. The optical interference display panel of claim 1, wherein the optical interference reflection structure comprises:

a first electrode;

a second electrode, wherein the second electrode is situated in parallel with the first electrode substantially; and

a support, located between the first electrode and the second electrode to form a cavity.

3. The optical interference display panel of claim 1, wherein the opaque protection structure is a flat protection structure or a U-shaped protection structure.

4. The optical interference display panel of claim 1, wherein a material of the opaque protection structure is an opaque material or a light absorptive material.

5. The optical interference display panel of claim 1, wherein the opaque protection structure comprises:

a second substrate; and

an opaque film, deposited on the second substrate.

6. The optical interference display panel of claim 5, wherein the opaque film is between the second substrate and the optical interference reflection structure.

7. The optical interference display panel of claim 5, wherein the opaque film is a metal film or a light absorptive film.

8. The optical interference display panel of claim 1, wherein the first substrate and the opaque protection structure are airtight to prevent the optical interference reflection structure from being damaged by an external environment.

9. The optical interference display panel of claim 1, wherein the adhesive comprises spacers, and the spacers keep a predetermined distance between the opaque protection structure and the first substrate to prevent the opaque protection structure from damaging the optical interference reflection structure.

10. The optical interference display panel of claim 1, wherein the adhesive comprises a UV glue or a thermosetting adhesive.