Input device, method of manufacturing the same, and electronic information equipment
An input device having a row electrode and a column electrode made by patterning a meshed metallic layer by forming a dividing section on a metallic line constituting the meshed metallic layer can make areas of individual dividing sections of the metallic lines uniform, whereby uneven shading due to the patterned, meshed conductive layer is suppressed from appearing on a touch operation surface. In the input device having the row electrode and the column electrode made by patterning the meshed metallic layer by forming the dividing section on the metallic line constituting the meshed metallic layer, at an intersecting section where metallic lines Mw 2 constituting a meshed conductive layer Lp 2 intersects an ideal contour Sp 2 of a meshed column electrode, the direction for dividing the metallic lines at the intersecting section is set to the direction matching the direction of width of the metallic lines such that the area of the dividing section traversing the metallic line is minimal.
1. An input device that detects an input operation by a change in capacitance between meshed electrodes, the input device comprising:
a plurality of meshed electrodes having a structure made by patterning a meshed conductive layer, the meshed conductive layer including
a plurality of first conductive lines extending in a first direction,
a plurality of second conductive line extending in a second direction orthogonal to the first direction such that the plurality of first conductive lines and the plurality of second conductive lines respectively cross each other thereby forming a mesh, and
a plurality of cut regions formed by patterning the meshed conductive layer using a mask pattern including a plurality of square regions Rs, each square region dividing a single one of the plurality of first and second conductive lines such that one side of the square region is parallel to the first direction and one side is parallel to the second direction, where each of the plurality of cut regions corresponds to one of the plurality of square regions of the mask pattern.
2. The input device of claim 1 , wherein the plurality of meshed electrodes are configured such that the first direction toward which the plurality of first conductive lines extend and the second direction toward which the second conductive line extends are set to a direction other than a horizontal direction, a vertical direction, and a diagonal 45° direction of a pixel array consisting of a plurality of pixels, based on an arrangement of the plurality of pixels constituting a display device for displaying an image.
3. The input device of claim 2 , wherein the plurality of first conductive lines which extend in the first direction are disposed at certain intervals and the plurality of second conductive lines which extend in the second direction orthogonal to the first direction are disposed at a certain interval, and a mesh of the meshed conductive layer has a square shape.
4. The input device of claim 3 , further comprising:
a first meshed conductive layer and a second meshed conductive layer as the meshed conductive layer, and
wherein the plurality of meshed electrode comprises,
a plurality of first meshed electrodes having a structure which extends along the horizontal direction of the pixel array and is made by patterning the first meshed conductive layer, and
a plurality of second meshed electrodes having a structure which extends along the vertical direction of the pixel array and is made by patterning the second meshed conductive layer,
the first meshed electrodes are constituted of a plurality of first electrode sections arranged along the horizontal direction of the pixel array, and a first connecting section for connecting adjacent first electrode sections, and
the second meshed electrodes are constituted of a plurality of second electrode sections arranged along the vertical direction of the pixel array and a second connecting section for connecting adjacent second electrode sections.
5. The input device of claim 4 , wherein
the plurality of first meshed electrodes are formed on a first insulation member,
the plurality of second meshed electrodes are formed on a second insulation member, and
the first and second insulation members are bonded together such that the first electrode sections of the first meshed electrode and the second electrode sections of the second meshed electrode are alternately arranged.
6. The input device of claim 5 , wherein
a first dummy electrode section obtained by patterning the first meshed conductive layer is disposed at a portion of the first insulation member opposing the second electrode sections, and
a second dummy electrode section obtained by patterning the second meshed conductive layer is disposed at a portion of the second insulation member opposing the first electrode sections.
7. The input device claim 1 , wherein
a line width of the plurality of first and second conductive lines constituting the meshed conductive layer is in the range of 1-10 μm,
the first electrode sections and the second electrode sections have a rhombus shape, and
a dimension of the cut region dividing a conductive line in a direction toward which the conductive lines extends is 40-50 μm.
8. A method of a manufacturing the input device of claim 1 , comprising
forming a conductive layer on an insulation substrate, and
forming the plurality of meshed electrodes by applying selective etching processing on the conductive layer by using a photomask.
9. A method of manufacturing the input device of claim 1 , comprising printing a conductive layer with a mesh structure having a predetermined pattern on an insulation substrate to form the plurality of meshed electrodes.
10. Electronic information equipment having an image display section for displaying an image and an information inputting section disposed on a display screen of the image display section for inputting information, comprising the input device of claim 1 as the information inputting section.