US 12,169,617 B2
Conductive member with mesh pattern for touch panel and touch panel
Kazuhiro Hasegawa, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Dec. 20, 2022, as Appl. No. 18/069,032.
Application 18/069,032 is a continuation of application No. PCT/JP2021/026055, filed on Jul. 12, 2021.
Claims priority of application No. 2020-143351 (JP), filed on Aug. 27, 2020.
Prior Publication US 2023/0123926 A1, Apr. 20, 2023
Int. Cl. G06F 3/044 (2006.01)
CPC G06F 3/0446 (2019.05) [G06F 3/0445 (2019.05); G06F 2203/04112 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A conductive member for a touch panel, the conductive member comprising:
a transparent insulating substrate; and
a conductive layer that is disposed on at least one surface of the transparent insulating substrate,
wherein the conductive layer has a mesh pattern that includes a plurality of irregular mesh cells consisting of a modified rhombus in a plan view and is formed of a plurality of fine metal wires,
the plurality of fine metal wires include at least one pair of fine metal wires that extend such that an acute angle of the modified rhombus is interposed between the fine metal wires,
each of the pair of fine metal wire includes a longest straight line portion forming the acute angle of the modified rhombus,
at least one fine metal wire among the pair of fine metal wires has a bending portion that is bent to an inner side of the acute angle from a starting point of bending on the longest straight line portion toward an intersection portion where the pair of fine metal wires intersect each other,
the modified rhombus has a shape where at least one vertex of a regular rhombic reference mesh cell is randomly redisposed or a shape where an interval between at least one pair of parallel sides of a regular rhombic reference mesh cell is randomly changed, and has an irregularity of 2% or more and 10% or less with respect to the reference mesh cell, and
at least one vertex of the modified rhombus is disposed on a different position from any corresponding one of vertices of the regular rhombic reference mesh cell.