Mother substrate for stereoscopic image display device

• US 8,665,383 B2
• Filed: 03/31/2011
• Issued: 03/04/2014
• Est. Priority Date: 04/02/2010
• Status: Expired due to Fees

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Lee, Bonggeum, Lee, Jaeho
• Primary Examiner(s): Merlin, Jessica M
• Application Number:
  US13/077,565
• Publication Number:
  US 20110242442A1
• Time in Patent Office: 1,069 Days
• Field of Search: 349/15, 349/74
• US Class Current: 349/15
• CPC Class Codes: G02B 30/25 using polarisation techniques
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33

Abstract

A stereoscopic image display device includes a pixel array cell provided with a plurality of pixels used to display 2D and 3D images, a switchable optical layer opposite to the pixel array cell, and a transparent both-sided adhesive film joining the pixel array cell to the switchable optical layer between the pixel array cell and the switchable optical layer.

Claims

1. A stereoscopic image display device mother substrate comprising:

a pixel array cell mother substrate provided with first alignment keys and including at least one pixel array cell which is provided with a plurality of pixel used to display 2D and 3D images;

a switchable optical layer mother substrate provided with second alignment keys and including at least one switchable optical layer opposite to the pixel array cell; and

a transparent both-sided adhesive film provided with third alignment keys and joining the pixel array cell to the switchable optical layer between the pixel array cell mother substrate and the switchable optical layer mother substrate,

wherein the pixel array cell mother substrate, the switchable optical layer mother substrate and the transparent both-sided adhesive film is aligned by using the first to third alignment keys.

2. The stereoscopic image display device mother substrate of claim 1, wherein the transparent both-sided adhesive film includes:

a film base;

a first adhesive layer formed on one surface of the film base;

a second adhesive layer formed on the other surface of the film base;

a first protective film covering the first adhesive layer to protect the first adhesive layer; and

a second protective film covering the second adhesive layer to protect the second adhesive layer.

3. The stereoscopic image display device mother substrate of claim 2, wherein the first adhesive layer faces the switchable optical layer and has substantially the same size as the switchable optical layer, and

the second adhesive layer faces the pixel array cell and has substantially the same size as the pixel array cell.

4. The stereoscopic image display device mother substrate of claim 1, wherein the switchable optical layer mother substrate includes first and second mother substrates opposite to each other, and

wherein electrodes are formed in a cell region of each of the first and second mother substrates corresponding to the pixel array cell, and a liquid crystal layer is formed in the cell region between the first and second mother substrates.

5. The stereoscopic image display device mother substrate of claim 4, wherein

the thickness of each of the first and second substrates is about 20 μ

m to about 500 μ

m.

6. The stereoscopic image display device mother substrate of claim 1, wherein the pixel array cell is implemented by organic light emitting diode elements.