Display device including test connection terminals
A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display lines in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
1. A display device comprising:
a first substrate;
a second substrate;
a plurality of pixel electrodes provided on the first substrate;
a common electrode that is commonly facing to the plurality of pixel electrodes and divided into a plurality of blocks;
an output circuit provided on the first substrate and supplying a touch detecting pulse and a common voltage to the plurality of blocks; and
thin film transistors for dynamic operating inspection on the first substrate,
wherein the output circuit outputs the touch detecting pulse to a block of the plurality of blocks during a touch detecting period and the common voltage to other blocks of the plurality of blocks which are not selected as a touch detecting electrode,
wherein the plurality of pixel electrodes are electrically connected to a plurality of switching elements respectively,
wherein the first substrate has a plurality of scanning signal lines which supply a control signal to the plurality of switching elements,
wherein the first substrate has a scanning line driver circuit that applies the control signal to the plurality of scanning signal lines,
wherein the plurality of pixel electrodes arranged in a matrix configure a display area,
wherein a first plurality of test connection terminals for the scanning line driver circuit and a second plurality of test connection terminals for the output circuit are arranged in a same line, and
wherein the first plurality of test connection terminals for the scanning line driver circuit and the second plurality of test connection terminals for the output circuit are arranged between the thin film transistors for dynamic operating inspection and the display area.
2. The display device according to claim 1 ,
wherein the output circuit outputs the touch detecting pulse to two adjacent blocks of the plurality of blocks at a same time.
3. The display device according to claim 1 ,
wherein the first substrate has a plurality of display lines which supplies a display signal to the plurality of pixel electrodes, and
wherein each block of the common electrode is commonly provided for the plurality of pixel electrodes of one display line respectively.
4. The display device according to claim 1 ,
wherein the output circuit includes:
an address decoder circuit that selects at least one block of the plurality of blocks respectively for a given period; and
the output circuit applies the touch detecting pulse to the at least one block of the plurality of blocks selected by the address decoder circuit, and applies the common voltage to other blocks of the plurality of blocks not selected by the address decoder circuit.
5. The display device according to claim 1 ,
wherein a common signal line is provided between the scanning line driver circuit and the display area.
6. A display device comprising:
a first substrate;
a second substrate;
a plurality of pixel electrodes provided on the first substrate;
a common electrode that is commonly facing to the plurality of pixel electrodes and divided into a plurality of blocks;
an output circuit provided on the first substrate and supplying a touch detecting signal and a common voltage to the plurality of blocks; and
thin film transistors for dynamic operating inspection on the first substrate,
wherein the output circuit outputs the touch detecting signal to a block of the plurality of blocks during a touch detecting period and the common voltage to other blocks of the plurality of blocks which are not selected as a touch detecting electrode,
wherein the plurality of pixel electrodes are electrically connected to a plurality of switching elements respectively,
wherein the first substrate has a plurality of scanning signal lines which supply a control signal to the plurality of switching elements,
wherein the first substrate has a scanning line driver circuit that applies the control signal to the plurality of scanning signal lines,
wherein the plurality of pixel electrodes arranged in a matrix configure a display area,
wherein a first plurality of test connection terminals for the scanning line driver circuit and a second plurality of test connection terminals for the output circuit are arranged in a same line, and
wherein the first plurality of test connection terminals for the scanning line driver circuit and the second plurality of test connection terminals for the output circuit are arranged between the thin film transistors for dynamic operating inspection and the display area.
7. The display device according to claim 6 ,
wherein the output circuit outputs the detecting signal to two adjacent blocks of the plurality of blocks at a same time.
8. The display device according to claim 6 ,
wherein the first substrate has a plurality of display lines which supplies a display signal to the plurality of pixel electrodes, and
wherein each block of the common electrode is commonly provided for the plurality of pixel electrodes of one display line respectively.
9. The display device according to claim 6 ,
wherein the output circuit includes:
an address decoder circuit that selects at least one block of the plurality of blocks respectively for the touch detecting period; and
the output circuit applies the touch detecting signal to the at least one block of the plurality of blocks selected by the address decoder circuit, and applies the common voltage to other blocks of the plurality of blocks not selected by the address decoder circuit.
10. The display device according to claim 6 ,
wherein a common voltage line is provided between the scanning line driver circuit and the display area.