Patent ID: 9146412
Filing Date: 2015-09-29
Classification: G02F,G06F

Abstract:
1. A liquid crystal display device with a built-in touch panel, comprising: a liquid crystal material; a first substrate and a second substrate between which the liquid crystal material is held; pixel electrodes formed between the first substrate and the second substrate; a common electrode formed between the first substrate and the second substrate; a detection electrode formed on the first substrate; and a plurality of common lines formed on 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, wherein the presence or absence of touch is detected according to a difference of a capacitance between the detection electrode and the common electrode, wherein the common electrode includes a plurality of divided electrodes that extend in a lateral direction and align 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, arranged next to each other in a width direction orthogonal to an extension direction thereof, the common lines of the plurality of common lines are different in width from each other, and the width of the common lines is wider as the common lines are longer, wherein an insulation layer is formed on the common lines, the insulation layer having a connecting opening which is formed above an end portion of each of the common lines, wherein a conductive film which is formed in the connecting opening electrically connects between each of the common lines and some of the plurality of divided electrodes, wherein the end portion lies next to the some of the plurality of divided electrodes which are electrically connected with the end portion, wherein a width in the lateral direction of the end portion is narrower than a total width in the longitudinal direction of the some of the plurality of divided electrodes, and wherein the width in the lateral direction of the end portion of a longer one of the common lines is wider than that of a shorter one of the common lines.