Display device and touch panel device
There is provided a display device equipped with a touch sensor that can decrease the area of the mounting surface with electromagnetic interference reduced. The display device includes a plurality of drive electrodes, an output circuit connected to the plurality of drive electrodes, a power supply circuit, and a resistor element. A power of the output circuit is connected to the power supply circuit through the resistor element.
1. A display device comprising: a plurality of drive electrodes; a plurality of output circuits connected to the plurality of drive electrodes, respectively;
power supply lines connected to power potentials of the plurality of output circuits;
power supply circuits; and
resistor elements that are provided in common for the plurality of output circuits and is different from a resistance of the power supply lines,
wherein a corresponding one of the power potentials of the plurality of output circuits is connected to a corresponding one of the power supply circuits through a corresponding one of the resistor elements and a corresponding one of the power supply lines,
wherein the power potentials of the plurality of output circuits includes a first power potential and a second power potential lower than the first power potential; the power supply circuits include a first power supply circuit and a second power supply circuit;
the power supply lines include a first power supply line through which the first power potential is supplied to the plurality of output circuits and a second power supply line through which the second power potential is supplied to the plurality of output circuits;
the resistor elements include a first resistor element that is provided in common for the plurality of output circuits and is different from a resistance of the first power supply line, and a second resistor element that is provided in common for the plurality of output circuits and is different from a resistance of the second power supply line;
the first power supply circuit outputs the first power potential to the first power supply line through the first resistor element; and
the second power supply circuit outputs the second power potential to the second power supply line through the second resistor element.
2. The display device according to claim 1 , further comprising a plurality of detection electrodes crossing the plurality of drive electrodes.
3. The display device according to claim 1 , wherein each of the plurality of output circuits is configured of a buffer circuit.
4. The display device according to claim 1 , wherein each of the plurality of output circuits is configured of a switch circuit.
5. The display device according to claim 1 , further comprising: a display panel; a flexible substrate connected to the display panel; a control substrate connected to the flexible substrate; a display controller; and a touch controller, wherein the display controller, the touch controller, the power supply circuits, and the resistor elements are disposed on the flexible substrate or on the control substrate.
6. A touch panel device comprising: a plurality of drive electrodes; a plurality of output circuits connected to the plurality of drive electrodes, respectively;
power supply lines connected to power potentials of the plurality of output circuits; power supply circuits; and
resistor elements that are provided in common for the plurality of output circuits and is different from a resistance of the power supply lines,
wherein a corresponding one of the power potentials of the plurality of output circuits is connected to a corresponding one of the power supply circuits through a corresponding one of the resistor elements and a corresponding one of the power supply lines,
wherein the power potentials of the plurality of output circuits includes a first power potential and a second power potential lower than the first power potential; the power supply circuits include a first power supply circuit and a second power supply circuit;
the power supply lines include a first power supply line through which the first power potential is supplied to the plurality of output circuits and a second power supply line through which the second power potential is supplied to the plurality of output circuits;
the resistor elements include a first resistor element that is provided in common for the plurality of output circuits and is different from a resistance of the first power supply line, and a second resistor element that is provided in common for the plurality of output circuits and is different from a resistance of the second power supply line;
the first power supply circuit outputs the first power potential to the first power supply line through the first resistor element; and
the second power supply circuit outputs the second power potential to the second power supply line through the second resistor element.
7. The touch panel device according to claim 6 , further comprising a plurality of detection electrodes crossing the plurality of drive electrodes.
8. The touch panel device according to claim 6 , wherein each of the plurality of output circuits is configured of a buffer circuit.
9. The touch panel device according to claim 6 , wherein each of the plurality of output circuits is configured of a switch circuit.
10. The touch panel device according to claim 6 , further comprising: a display panel; a flexible substrate connected to the display panel; a control substrate connected to the flexible substrate; a display controller; and a touch controller, Wherein the display controller, the touch controller, the power supply circuits, and the resistor elements are disposed on the flexible substrate or on the control substrate.
11. A display device comprising: a plurality of drive electrodes configured to perform touch detection;
a plurality of output circuits connected to the plurality of drive electrodes,
a plurality of chive circuits having output parts individually connected to the plurality of drive electrodes;
a first power supply line through Which a first reference potential is supplied to the plurality of drive circuits;
a second power supply line through which a second reference potential is supplied to the drive circuits;
a first power supply circuit configured to generate the first reference potential;
a second power supply circuit configured to generate the second reference potential;
a first resistor element that is provided in common for the plurality of drive circuits and is different from a resistance of the first power supply line,
a second resistor element that is provided in common for the plurality of drive circuits and is different from a resistance of the second power supply line; and
wherein the first power supply line is connected to the first power supply circuit through the first resistor element and the second power supply line is connected to a second Power supply circuit through the second resistor element.
12. The display device according to claim 11 , further comprising a plurality of detection electrodes crossing the plurality of drive electrodes.
13. The display device according to claim 11 ,
wherein the plurality of drive electrodes are individually connected to a detection circuit, the plurality of drive electrodes performing touch detection self capacitance sensing.