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US 10,254,885 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorsJong-Soo Lee, Yong-Jun Park, Jin Seo, Sang-Heon Ye, Young-Suk Lee
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Abstract
A display device includes a pixel including a first electrode and a second electrode and having first capacitance formed between the first electrode and the second electrode; a power supply to provide the first electrode with a third power voltage including an alternating wave form and to provide the second electrode with a second power voltage; and a sensor to sense a touch current flowing between the first electrode and the second electrode in response to the touch driving signal.
Claims14
A display device comprising:
- a pixel including a first electrode and a second electrode, the pixel having a first capacitor and a light emission element-formed between the first electrode and the second electrode;
- a power supply configured to provide the first electrode with a third power voltage including an alternative wave form and to provide the second electrode with a second power voltage;
- and
- a sensor configured to sense a touch current flowing between the first electrode and the second electrode in response to the touch driving signal,
- wherein the third power voltage includes a touch driving signal and a first power voltage,
- wherein the first electrode forms touch capacitance between a touch input object and the first electrode,
- wherein the touch input object approaches from an outside of the display device to the first electrode,
- wherein the touch driving signal has a square waveform and amplitude which is less than the first power voltage,
- wherein the first power voltage has a constant voltage level, and
- wherein the third power voltage has a waveform of sum of the first power voltage and the touch driving signal.
7 more elements
A display device comprising:
- a pixel including a first electrode and a second electrode, the pixel having a first capacitor and a light emission element formed between the first electrode and the second electrode;
- a power supply configured to generate a first power voltage, a second power voltage, and a third power voltage, to alternately provide the first electrode with the first power voltage and the third power voltage, and to provide the second electrode with the second power voltage, the third power voltage including an alternative wave form;
- and
- a sensor configured to sense a touch current flowing between the first electrode and the second electrode in response to the touch driving signal,
- wherein the third power voltage includes the first power voltage and a touch driving signal,
- wherein the first electrode forms touch capacitance between a touch input object and the first electrode,
- wherein the touch input object approaches from an outside of the display device to the first electrode,
- wherein the touch driving signal has a square waveform and amplitude which is less than the first power voltage,
- wherein the first power voltage has a constant voltage level, and
- wherein the third power voltage has a waveform of sum of the first power voltage and the touch driving signal.
7 more elements
Dependencies are inferred from the claim text.