Touch panel having 15 to 30 degree angle between direction of display unit elements and direction of input unit elements

• US 5,640,258 A
• Filed: 09/07/1995
• Issued: 06/17/1997
• Est. Priority Date: 01/27/1995
• Status: Expired due to Term

• Current Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Limited
• Inventors: Kurashima, Shigemi, Sakaguchi, Akihiko, Kurasawa, Katsuhiro
• Primary Examiner(s): Gross, Anita Pellman
• Assistant Examiner(s): TON, MINH TOAN T
• Application Number:
  US08/524,575
• Time in Patent Office: 649 Days
• Field of Search: 359/83, 359/46, 345/173, 345/156
• US Class Current: 349/23
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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 includes a display unit having display elements which are arranged in a first lattice, and an input panel, put on the display unit, having a structure in which transparent resistive films maintained at a predetermined distance by insulating dot spacers are provided on a transparent substrate, the insulating dot spacers being arranged in a second lattice, wherein a relative angle θ between a direction in which the display elements are arranged in the first lattice and a direction in which the insulating dot spacers are arranged in the second lattice falls in a range of 15°≦θ≦30°.

Claims

1. A touch panel comprising:

a display unit having display elements which are arranged in a first lattice; and

an input panel, put on said display unit, having a structure in which transparent resistive films maintained at a predetermined distance by insulating dot spacers are provided on a transparent substrate, the insulating dot spacers being arranged in a second lattice, wherein a relative angle θ

between a direction in which the display elements are arranged in the first lattice and a direction in which the insulating dot spacers are arranged in the second lattice falls in a range of

space="preserve" listing-type="equation">15°

≦

θ

≦

30°

.

2. A touch panel comprising:

a display unit having display elements which are arranged in a first lattice; and

an input panel, put on said display unit, having a structure in which transparent resistive films maintained at a predetermined distance by insulating dot spacers are provided on a transparent substrate, the insulating dot spacers being arranged in a second lattice, wherein a relative angle θ

between a direction in which the display elements are arranged in the first lattice and a direction in which the insulating dot spacers are arranged in the second lattice falls in a range of

space="preserve" listing-type="equation">20°

≦

θ

≦

25°

.

3.

3. An input panel used in a touch panel, said input panel comprising:

a transparent substrate; and

transparent resistive films provided on said transparent substrate, said transparent resistive films being maintained at a predetermined distance by insulating dot spacers which are arranged in a lattice, wherein a relative angle θ

between a direction in which an edge of said input panel extends and a direction in which the insulating dot spacers are arranged in the lattice falls in a range of

space="preserve" listing-type="equation">15°

≦

θ

≦

30°

.

4. An input panel used in a touch panel, said input panel comprising:

a transparent substrate; and

transparent resistive films provided on said transparent substrate, said transparent resistive films being maintained at a predetermined distance by insulating dot spacers which are arranged in a lattice, wherein a relative angle θ

between a direction in which an edge of said input panel extends and a direction in which the insulating dot spacers are arranged in the lattice falls in a range of

space="preserve" listing-type="equation">20°

≦

θ

≦

25°

.