Liquid crystal display device having touch sensor

摘要

A liquid crystal display having a touch screen panel (TSP) function includes a sensor unit formed on the first substrate; a first sensor wire disposed on the first substrate and a second sensor wire extending perpendicular to the first sensor wire, wherein the sensor unit includes a first sensor electrode connected to the first sensor wire and a second sensor electrode connected to the second sensor wire, wherein said first sensor electrode and said second sensor electrode connect when touched, and said first and second sensor wires confirm a touch position by transmitting a sensing current through the connection between the first sensor electrode and the second sensor electrode, a trench is formed near the sensor unit and a silicon protrusion pattern to increase the sensitivity of the touch screen panel.

主权项

1. A liquid crystal display comprising:
a first substrate; a gate line disposed on the first substrate; a gate insulator disposed on the gate line and first substrate; a data line intersecting the gate line; a first passivation layer formed on the gate insulator; a plate-shaped electrode disposed on the first passivation layer; a second passivation layer formed on the first passivation layer, wherein the plate-shaped electrode is interposed between the first passivation layer and the second passivation layer; a linear electrode disposed on the second passivation layer, wherein the plate-shaped electrode overlaps the linear electrode and the second passivation layer insulates the plate-shaped electrode from the linear electrode, and wherein the first passivation layer on the first substrate insulates the linear electrode from the gate line and the data line; a sensor unit formed on the first substrate including a first sensor electrode and a second sensor electrode for sensing a touch position; a second substrate facing the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate; a first trench disposed between the sensor unit and the linear electrode that exposes the gate insulator, wherein the first trench is formed by removing the first and second passivation layers between the sensor unit and the linear electrode; and an alignment layer formed on the linear electrode and sensor unit that fills the first trench, wherein said alignment layer is thicker inside said first trench than on a boundary near the first trench.