DISPLAY PANEL AND DISPLAY APPARATUS HAVING THE SAME
A display panel includes an array substrate, an opposite substrate and a liquid crystal layer. The array substrate has a pixel part and a lower touch electrode spaced apart from the pixel part. The opposite substrate has a common electrode receiving a common voltage and an upper touch electrode spaced apart from the common electrode and overlapping the lower touch electrode. The upper touch electrode receives a touch voltage. The liquid crystal layer is interposed between the array substrate and the opposite substrate.
1 . A display panel comprising:
an array substrate having a pixel part and a lower touch electrode spaced apart from the pixel part;
an opposite substrate having a common electrode receiving a common voltage and an upper touch electrode spaced apart from the common electrode and overlapping the lower touch electrode, the upper touch electrode receiving a touch voltage; and
a liquid crystal layer interposed between the array substrate and the opposite substrate.
2 . The display panel of claim 1 , wherein the lower touch electrodes are arranged in a first direction and a second direction that is substantially perpendicular to the first direction in a matrix shape.
3 . The display panel of claim 2 , wherein the upper touch electrode comprises:
a plurality of sub-electrode parts extended along one of the first and second directions to cover the lower touch electrodes; and
a main-electrode part extended along another of the first and second directions to be electrically connected to an end portion of each of the sub-electrode parts.
4 . The display panel of claim 3 , wherein each of the lower touch electrodes has a rectangular shape, of which a length of the lower touch electrode along the first direction is greater than a length of the lower touch electrode along the second direction,
wherein the sub-electrode parts of the upper touch electrode are extended in the first direction, and the main-electrode part of the upper touch electrode is extended in the second direction.
5 . The display panel of claim 4 , wherein the array substrate further comprises a plurality of short points formed in correspondence with four edge portions of the opposite substrate to be electrically connected to the opposite substrate.
6 . The display panel of claim 5 , wherein the main-electrode part is electrically connected to at least one of the short points.
7 . The display panel of claim 6 , wherein the upper touch electrode further comprises a connection electrode part extended from a first end portion of the main-electrode part in the first direction to be electrically connected to another of the short points.
8 . The display panel of claim 6 , wherein the common electrode is electrically connected to short points that are electrically isolated from the upper touch electrode.
9 . The display panel of claim 1 , wherein the upper touch electrode is spaced apart from the common electrode by about 4 micrometers to about 10 micrometers.
10 . The display panel of claim 1 , wherein the touch voltage is substantially greater than the common voltage.
11 . The display panel of claim 10 , wherein the touch voltage alternates from a high level to a low level, periodically.
12 . The display panel of claim 11 , wherein the high level of the touch voltage is about 10 V to about 20 V, and the low level of the touch voltage is about 0 V.
13 . A display apparatus having a touch function, the display apparatus comprising:
a timing controller outputting a gate control signal and a data control signal in response to an image control signal provided from an external device;
a gate driving section outputting a gate signal in response to the gate control signal;
a data driving section outputting a data signal in response to the data control signal; and
a display panel displaying an image in response to the gate signal and the data signal, wherein the display panel comprises,
an array substrate having a pixel part and a lower touch electrode spaced apart from the pixel part;
an opposite substrate having a common electrode receiving a common voltage and an upper touch electrode spaced apart from the common electrode and overlapping the lower touch electrode, the upper touch electrode receiving a touch voltage; and
a liquid crystal layer interposed between the array substrate and the opposite substrate.
14 . The display apparatus of claim 13 , wherein the gate control signal comprises a gate clock voltage to drive the gate driving section,
wherein the touch voltage is substantially equal to the gate clock voltage.
15 . The display apparatus of claim 13 , further comprising:
a touch voltage-generating section generating the touch voltage to provide the display panel with the touch voltage.
16 . The display apparatus of claim 15 , wherein the touch voltage alternates from a high level to a low level, periodically.
17 . The display apparatus of claim 13 , wherein the array substrate further comprises a sensor wiring electrically connected to the lower touch electrode to transfer a sensing signal.
18 . The display apparatus of claim 17 , further comprising:
a position signal outputting section receiving the sensing signal from the sensor wiring to provide an external side of the display apparatus with a position control signal.
19 . The display apparatus of claim 13 , wherein the array substrate further comprises,
a gate wiring electrically connected to the pixel part in a first direction to transfer the gate signal; and
a data wiring formed in a second direction crossing the first direction to be electrically connected to the pixel part, the data wiring transferring the data signal.
20 . The display apparatus of claim 19 , wherein the pixel part comprises,
a pixel transistor electrically connected to the gate wiring and the data wiring; and
a pixel electrode electrically connected to the pixel transistor.