Burning equipment for green sheet of plasma display panel and method of burning the same

• US 7,229,519 B2
• Filed: 01/27/2005
• Issued: 06/12/2007
• Est. Priority Date: 01/27/2004
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Jin Ho, Kong, Sang Jin
• Primary Examiner(s): MAYES, MELVIN C
• Application Number:
  US11/050,825
• Publication Number:
  US 20050161147A1
• Time in Patent Office: 866 Days
• Field of Search: 156/322, 156/497, 156/498, 156/499, 156/272.2, 156/273.3
• US Class Current: 156/309.9
• CPC Class Codes: B32B 2038/168 Removing solvent
• CPC Class Codes: B32B 2305/77 Uncured, e.g. green
• CPC Class Codes: B32B 37/0007 involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
• CPC Class Codes: B32B 37/06 characterised by the heating method
• CPC Class Codes: Y10T 156/1744 Means bringing discrete articles into assembled relationship

Abstract

An apparatus for burning green sheets of a plasma display panel comprises a feeding part that feeds a green sheet to a plasma display panel substrate, a heat and pressure roller that heats and compresses the green sheet and the plasma display panel substrate from above the plasma display panel substrate, and a heating module that applies heat to a contact portion between the green sheet and the plasma display panel substrate. The heat and pressure roller applies heat and pressure to the green sheet to bring the green sheet into intimate contact with the plasma display panel substrate and to remove residual solvent from the green sheet.

Claims

1. A method of burning a green sheet of a plasma display panel, comprising:

feeding a green sheet to a plasma display panel substrate;

primarily heating a contact portion between the green sheet and the plasma display panel substrate by use of a movable heating module to remove residual solvent present in a lower portion of the green sheet while enhancing the adhesive force between the green sheet and the plasma display panel substrate;

heating and compressing the green sheet and the plasma display panel substrate to compress the green sheet to the plasma display panel substrate substantially at the primarily heated contact portion; and

conveying the plasma display panel substrate while heating and compressing the green sheet and the plasma display panel substrate.

2. The method as set forth in claim 1, wherein feeding the green sheet comprises:

feeding the green sheet to the plasma display panel substrate while being tightly drawn to prevent creases from forming thereupon.

3. The method as set forth in claim 1, wherein primarily heating comprises:

selectively heating the contact portion by displacing the heating module in vertical and horizontal directions with respect to the plasma display panel substrate while performing accurate adjustment of the heating module.

4. The method as set forth in claim 1, further comprising:

cooling a heated and compressed portion of the green sheet by use of a cooling module after heating and compressing the primarily heated green sheet to prevent deformation of the green sheet.

5. The method as set forth in claim 4, wherein the cooling module injects air having a relatively low temperature onto the green sheet.

6. The method as set forth in claim 4, wherein said cooling comprises:

selectively cooling the heated and compressed portion of the green sheet by displacing the cooling module in vertical and horizontal directions with respect to the plasma display panel substrate while accurately adjusting the cooling module.