Patent ID: 9671639
Date: 2017-06-06
CPC Classifications: G02F,G06F

Claim:
1. A liquid crystal display device with a built-in touch panel, comprising: a first substrate and a second substrate; a liquid crystal material held between the first substrate and the second substrate; a plurality of pixel electrodes formed above the second substrate; a common electrode formed above the second substrate; a detection electrode formed above the first substrate; and a plurality of common lines formed above the second substrate so as to be electrically connected to the common electrode, wherein the liquid crystal material is driven by an electric field formed between the pixel electrodes and the common electrode which is applied a reference voltage, wherein the presence or absence of touch is detected according to a difference of a capacitance between the detection electrode and the common electrode which is applied a detection voltage, wherein the common electrode includes a plurality of divided electrodes extending in a lateral direction and aligned with each other in a longitudinal direction, wherein the plurality of common lines is arranged in an area next to the common electrode in the lateral direction of the common electrode, wherein the plurality of common lines has parallel arranged portions in the area next to the common electrode, each of the plurality of common lines having an end portion, wherein an insulation layer is formed between the common lines and the divided electrodes, the insulation layer having a connecting opening formed above the end portion of each of the plurality of common lines, wherein a conductive film, which is formed in the connecting opening, electrically connects between each of the plurality of common lines and some of the plurality of divided electrodes, wherein each of the plurality of common lines has the end portion in a greater width in the lateral direction than a corresponding one of the parallel arranged portions in a width in the lateral direction and wherein the end portion of a longer one of the plurality of common lines is wider in the lateral direction than the end portion of a shorter one of the plurality of common lines.