Touch panel and the manufacturing method

• US 7,351,922 B2
• Filed: 07/27/2005
• Issued: 04/01/2008
• Est. Priority Date: 09/02/2004
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Tanabe, Koji
• Primary Examiner(s): FISHMAN, MARINA
• Application Number:
  US11/191,798
• Publication Number:
  US 20060044284A1
• Time in Patent Office: 979 Days
• Field of Search: 200/5.A, 200/5.R, 200/511, 200/512, 200/310, 200/314, 345173-176, 178 1801- 6, 341/20, 341/22, 341/33, 341/34
• US Class Current: 200/5.00A
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch panel uses a plurality of spacers shaped in the form of a letter L. The L-shape spacers can be manufactured by densely patterning the shapes of L in a certain specific orientation on a spacer sheet. Thus, a large number of such spacers can be made available out of a unit spacer sheet of a certain specific size, at a lowered rate of loss in the material utilization.

Claims

1. A touch panel comprising:

a light transmitting lower substrate having a lower conductive layer on an upper surface thereof,

a light transmitting upper substrate with an upper conductive layer on a lower surface thereof, a space formed between said lower conductive layer and said upper conductive layer, and

a plurality of sheet spacers disposed between said upper conductive layer and said lower conductive layer, said spacers being provided with adhesive layers on an upper surface and a lower surface thereof;

wherein

the plurality of spacers are provided along sides of the upper and the lower substrates, and

said spacers are L shaped.

2. The touch panel of claim 1, wherein a gap between the plurality of spacers is filled with a sealing material.