Electronic Ink Display Device and Method for Manufacturing the Same

• US 20080252962A1
• Filed: 11/22/2005
• Published: 10/16/2008
• Est. Priority Date: 11/30/2004
• Status: Abandoned Application

• Current Assignee: TPO Hong Kong Holding Limited (InnoLux Corporation)
• Original Assignee: TPO Hong Kong Holding Limited (InnoLux Corporation)
• Inventors: Ohmae, Yuichiro, Tsuji, Tomohiro, Hirota, Yoshikazu, Nakamura, Tadao, Makubo, Yasuyuki
• Application Number:
  US11/791,763
• Publication Number:
  US 20080252962A1
• Time in Patent Office: Days
• US Class Current: 359/296
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: G02F 1/16755 Substrates
• CPC Class Codes: G02F 1/1679 Gaskets; Spacers; Sealing of cells; Filling or closing of cells

Abstract

The invention provides an electronic ink display device having a panel structure of reduced thickness and enhanced moisture resistance and a method for manufacturing the same. The electronic ink display device has a first substrate (10) having display pixels, a second substrate (16) laid over the first substrate and having an electronic ink layer (13) on its lower major surface, the electronic ink layer having a space (26) terminating at a position with a predetermined distance receding from the periphery of the second substrate, and a seal (27) which fills the space and is laminated on the first substrate to cover at least part of the peripheral edge of the second substrate.

Claims

1. An electronic ink display device comprising:

a first substrate having display pixels;

a second substrate laid over the first substrate and having an electronic ink layer on its lower major surface, the electronic ink layer having a space terminating at a position with a predetermined distance receding from the periphery of the second substrate; and

a seal which fills the space and is laminated on the first substrate to cover at least part of the peripheral edge of the second substrate.

2. A device as claimed in claim 1, wherein the second substrate comprises a laminated structure of at least a bonding layer, an electronic ink layer, an ITO layer and a PET layer.

3. A device as claimed in claim 1, wherein the second substrate further includes a low-reflection layer on its upper major surface.

4. A device as claimed in claim 1, wherein the sealing material is a photo-cured resin.

5. A method for manufacturing an electronic ink display device comprising the steps of:

laminating onto a first substrate containing display pixels a second substrate having at least an underlying electronic ink layer, selectively removing the electronic ink layer to terminate it at a position with a given distance receding from the periphery of the second substrate, and

after the step of selectively removing the electronic ink layer, filling the resultant space with sealing material and laminating the sealing material on the first substrate to cover at least part of the peripheral edge of the second substrate.

6. A method as claimed in claim 5, wherein the step of selectively removing the electronic ink layer is carried out through the mechanical or chemical etching.