CONDUCTIVE SHEET, METHOD FOR USING CONDUCTIVE SHEET, AND CAPACITIVE TOUCH PANEL

• US 20120118614A1
• Filed: 11/19/2010
• Published: 05/17/2012
• Est. Priority Date: 11/20/2009
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Kuriki, Tadashi
• Granted Patent: US 8,586,874 B2
• Time in Patent Office: Days
• US Class Current: 174/250
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A conductive Sheet, a method for using conductive sheet, and a capacitive touch panel are provided. A first conductive sheet contains two or more conductive first large lattices and a first connection for electrically connecting the adjacent first large lattices on a first transparent substrate. The first large lattices each contain a combination of two or more small lattices, the first connection contains one or more medium lattices (a first medium lattice to a fourth medium lattice), and the pitch of the medium lattices is n times larger than that of the small lattices (in which n is a real number larger than 1).

Claims

1-32. -32. (canceled)

33. A conductive sheet comprising two or more conductive large lattices and a connection for electrically connecting the adjacent large lattices formed on a substrate, wherein

the large lattices each contain a combination of two or more small lattices,

the connection contains one or more medium lattices, and

a pitch of the medium lattices is n times larger than that of the small lattices (in which n is a real number larger than 1).

34. The conductive sheet according to claim 33, wherein

the two or more large lattices are arranged in one direction with the connection disposed therebetween.

35. The conductive sheet according to claim 33, wherein

the two or more large lattices are arranged in a first direction with the connection disposed therebetween to form a conductive pattern,

two or more of the conductive patterns are arranged in a second direction perpendicular to the first direction, and

an electrically isolated insulation is disposed between the adjacent conductive patterns.

38. The conductive sheet according to claim 33, wherein the medium lattices have a shape similar to the small lattices.

39. The conductive sheet according to claim 33, wherein the small lattices have a polygonal shape.

40. The conductive sheet according to claim 39, wherein the small lattices have a square shape.

36. A conductive sheet comprising a substrate, wherein

two or more conductive first large lattices and a first connection for electrically connecting the adjacent first large lattices are formed on one main surface of the substrate,

two or more conductive second large lattices and a second connection for electrically connecting the adjacent second large lattices are formed on the other main surface of the substrate,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the first connection and the second connection each contain one or more medium lattices, and

a pitch of the medium lattices is n times larger than that of the small lattices (in which n is a real number larger than 1).

37. The conductive sheet according to claim 36, wherein

the two or more first large lattices are arranged in a first direction with the first connection disposed therebetween to form a first conductive pattern,

the two or more second large lattices are arranged in a second direction perpendicular to the first direction with the second connection disposed therebetween to form a second conductive pattern,

two or more of the first conductive patterns are arranged in the second direction,

two or more of the second conductive patterns are arranged in the first direction,

an electrically isolated first insulation is disposed between the adjacent first conductive patterns,

an electrically isolated second insulation is disposed between the adjacent second conductive patterns,

the first connection and the second connection are arranged facing each other with the substrate in between, and

the first insulation and the second insulation are arranged facing each other with the substrate in between.

41. A conductive sheet comprising a substrate, a first conductive part formed on one main surface of the substrate, and a second conductive part formed on the other main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns composed of a thin metal wire,

the first conductive patterns each extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns composed of a thin metal wire,

the second conductive patterns each extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first large lattices connected in series in the first direction,

the second conductive patterns each contain two or more second large lattices connected in series in the second direction,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the thin metal wire has a line width of 1 to 15 μ

m,

the small lattices have a side length of 50 to 500 μ

m, the first conductive part further contains an electrically isolated first insulation between the first conductive patterns,

the second conductive part further contains an electrically isolated second insulation between the second conductive patterns,

the first conductive patterns and the second conductive patterns are crossed to form an arrangement of a large number of lattices as viewed from above,

the first insulation and the second insulation overlap with each other to form a combined pattern between the first conductive patterns and the second conductive patterns, and

the combined pattern contains an opening having the same size as two or more of the lattices arranged.

42. The conductive sheet according to claim 41, wherein the combined pattern contains an opening having the same size as two or more of the small lattices arranged.

43. A conductive sheet comprising a substrate, a first conductive part formed on one main surface of the substrate, and a second conductive part formed on the other main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns composed of a thin metal wire,

the first conductive patterns each extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns composed of a thin metal wire,

the second conductive patterns each extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first large lattices connected in series in the first direction,

the second conductive patterns each contain two or more second large lattices connected in series in the second direction,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the thin metal wire has a line width of 1 to 15 μ

m,

the small lattices have a side length of 50 to 500 μ

m,

the adjacent first large lattices are electrically connected by a first connection,

the adjacent second large lattices are electrically connected by a second connection,

the first connection and the second connection each contain one or more medium lattices,

a pitch of the medium lattices is n times larger than that of the small lattices (in which n is a real number larger than

     1),

the first conductive part further contains an electrically isolated first insulation between the first conductive patterns,

the second conductive part further contains an electrically isolated second insulation between the second conductive patterns,

the first conductive patterns and the second conductive patterns are crossed to form an arrangement of a large number of lattices as viewed from above,

the first insulation and the second insulation overlap with each other to form a combined pattern between the first conductive patterns and the second conductive patterns, and

the combined pattern contains an opening having the same size as the medium lattice.

44. A conductive sheet comprising a substrate, a first conductive part formed on one main surface of the substrate, and a second conductive part formed on the other main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns composed of a thin metal wire,

the first conductive patterns each extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns composed of a thin metal wire,

the second conductive patterns each extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first large lattices connected in series in the first direction,

the second conductive patterns each contain two or more second large lattices connected in series in the second direction,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the thin metal wire has a line width of 1 to 15 μ

m,

the small lattices have a side length of 50 to 500 μ

m,

the first conductive part further contains an electrically isolated first insulation between the first conductive patterns,

the second conductive part further contains an electrically isolated second insulation between the second conductive patterns,

the first conductive patterns and the second conductive patterns are crossed to form an arrangement of a large number of lattices as viewed from above,

the first insulation and the second insulation overlap with each other to form a combined pattern between the first conductive patterns and the second conductive patterns, and

the combined pattern contains an opening having the same size as a plurality of the small lattices arranged in an approximately cross shape.

45. A conductive sheet comprising a substrate, a first conductive part formed on one main surface of the substrate, and a second conductive part formed on the other main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns composed of a thin metal wire,

the first conductive patterns each extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns composed of a thin metal wire,

the second conductive patterns each extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first large lattices connected in series in the first direction,

the second conductive patterns each contain two or more second large lattices connected in series in the second direction,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the thin metal wire has a line width of 1 to 15 μ

m,

the small lattices have a side length of 50 to 500 μ

m,

a large number of needle-like lines extend from a continuous straight line to form a comb-like shape along a first side of the first large lattice,

a continuous straight line is formed along a second side of the first large lattice facing the first side,

a continuous straight line is formed along a third side of the second large lattice facing the first side of the first large lattice, and

a large number of needle-like lines extend from a continuous straight line to form a comb-like shape along a fourth side of the second large lattice facing the second side of the first large lattice.

46. A conductive sheet comprising a substrate, a first conductive part formed on one main surface of the substrate, and a second conductive part formed on the other main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns composed of a thin metal wire,

the first conductive patterns each extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns composed of a thin metal wire,

the second conductive patterns each extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first large lattices connected in series in the first direction,

the second conductive patterns each contain two or more second large lattices connected in series in the second direction,

the first large lattices and the second large lattices each contain a combination of two or more small lattices,

the thin metal wire has a line width of 1 to 15 μ

m,

the small lattices have a side length of 50 to 500 μ

m,

the first conductive part further contains a plurality of first insulations containing a first auxiliary line composed of a thin metal wire between the first conductive patterns,

the second conductive part further contains a plurality of second insulations containing a second auxiliary line composed of a thin metal wire between the second conductive patterns,

the first conductive patterns and the second conductive patterns are crossed as viewed from above,

the first insulation and the second insulation overlap with each other to form a combined pattern between the first conductive patterns and the second conductive patterns,

the combined pattern has the first auxiliary line and the second auxiliary line crossed which do not overlap with the first conductive patterns and the second conductive patterns, the first auxiliary line is a straight line separated from the first large lattices, and

the second auxiliary line is a straight line separated from the second large lattices.

47. The conductive sheet according to claim 46, wherein

the first auxiliary line and the second auxiliary line each have a length approximately equal to the side length of the small lattices.

48. The conductive sheet according to claim 46, wherein

the small lattices have a square shape, and

the combined pattern has the first auxiliary line and the second auxiliary line perpendicularly crossed which do not overlap with the first conductive patterns and the second conductive patterns.

49. The conductive sheet according to claim 46, wherein

the small lattices have a rhombic shape, and

the combined pattern has the first auxiliary line and the second auxiliary line crossed at an angle approximately equal to the vertex angle of the rhombic shape of the small lattice, the first auxiliary line and the second auxiliary line forming the combined pattern which does not overlap with the first conductive patterns and the second conductive patterns.