Display panel

• US 9,653,704 B2
• Filed: 05/11/2015
• Issued: 05/16/2017
• Est. Priority Date: 05/13/2014
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: JOLED Inc.
• Inventors: Horikawa, Keiji
• Primary Examiner(s): KUSUMAKAR, KAREN M
• Application Number:
  US15/025,416
• Publication Number:
  US 20160226027A1
• Time in Patent Office: 736 Days
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays

Abstract

A display panel includes: a first substrate; a display unit disposed on a principal surface of the first substrate; a first sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the first substrate; a second sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the display unit; a desiccant material filled between the first sealing wall and the second sealing wall; a protective material filled on the display unit, in a region surrounded by the second sealing wall; and a second substrate. The second sealing wall covers at least a portion of a surface of the display unit opposite a surface of the display unit which is in contact with the first substrate.

Claims

1. A display panel comprising:

a first substrate;

a display unit disposed on a principal surface of the first substrate;

a first sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the first substrate;

a second sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the display unit;

a desiccant material filled between the first sealing wall and the second sealing wall;

a protective material filled on the display unit, in a region surrounded by the second sealing wall; and

a second substrate disposed on the first sealing wall, the second sealing wall, the desiccant material, and the protective material,

wherein the second sealing wall covers at least a portion of a surface of the display unit, the surface being opposite a surface of the display unit which is in contact with the first substrate; and

wherein the outer periphery of the display unit has a length greater than a length of an inner periphery of the second sealing wall and less than a length of an outer periphery of the second sealing wall.

2. The display panel according to claim 1,

wherein the second sealing wall has a viscosity greater than a viscosity of the desiccant material and a viscosity of the protective material.