Tdk Corporation

Tpk Touch Solutions (xiamen) Inc.

Tdk Xiamen Co., Ltd.

Fan Zhang

Yuji Umeda

Shun-Ta Chien

Ching-Yang Chang

Daisuke Ohtsu

Kakeru Watanabe

Guibin Ge

RuiLun Zhang

Jintao Huang

Kazuya Muto

The present invention relates to the dielectric composition including barium titanate, strontium titanate, titanium oxide and bismuth oxide. In case when the content of barium titanate, converted to BaTiO, is a mol %, the content of strontium titanate, converted to SrTiO, is b mol %, the content of titanium oxide and bismuth oxide, converted to BiTiO, is c mol %, and a+b+c=100, a, b and c are values within a scope surrounded by the following four points, i.e. point A, point B, point C and point D in a three-dimensional phase diagram. Point A: (a, b, c)=(52.1, 40.0, 7.9); point B: (a, b, c)=(86.5, 5.6, 7.9); point C: (a, b, c)=(91.0, 5.6, 3.4); point D: (a, b, c)=(56.6, 40.0, 3.4).

Dielectric composition and electric components

Disclosed is a conductor pattern structure of a capacitive touch panel. First-axis conductor assemblies and second-axis conductor assemblies are formed on a surface of a substrate. Each first-axis conductor assembly includes a plurality of first-axis conductor cells that are interconnected by first-axis conduction lines. Each second-axis conductor assembly includes a plurality of second-axis conductor cells that are interconnected by second-axis conduction lines. At least part of each first-axis conduction lines is conductive in horizontal direction and insulating in vertical direction and each of the second-axis conduction lines respectively intersects with the at least part of corresponding first-axis conduction lines.

Conductor pattern structure of capacitive touch panel

The dielectric ceramic composition comprising a main component including a compound satisfying a compositional formula of (SrBa)TiO('x' in said compositional formula is 0.159&#x2266;'x'&#x2266;0.238, and &#x201c;m&#x201d; is 0.997&#x2266;&#x201c;m&#x201d;&#x2266;1.011), and a subcomponent comprising 11 to 25 weight % of CaTiO, 0.10 to 0.50 weight % of at least one oxide of element selected from the group consisting of Fe, Co, Ni, Cu, and Zn in terms of FeO, CoO, NiO, CuO, and ZnO, 0.590 to 1.940 mol % of an oxide of element &#x201c;A&#x201d; (A is Mn and/or Cr), and an oxide of element &#x201c;D&#x201d; where &#x201c;D&#x201d; is at least one element selected from a group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Y; wherein a ratio (A/D) of the element &#x201c;A&#x201d; with respect to element &#x201c;D&#x201d; is 2.250 to 7.450. According to the present invention, the dielectric loss (tan &#x3b4;) at the wide frequency range can be lowered while maintaining a good capacitance temperature characteristic and the specific permittivity, without including Pb and bismuth Bi.

Dielectric ceramic composition and electronic component

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Xiamen, China

Fan Zhang