TOUCH SENSITIVE DISPLAY DEVICE AND DRIVING APPARATUS AND METHOD THEREOF
First Claim
1. A display device comprising:
- a display panel;
a plurality of pixels formed on the display panel;
a plurality of sensing units formed on the display panel and generating sensor output signals in response to a touch exerted on the display panel;
a sensing signal processor receiving and processing an analog sensor data signal originated from the sensor output signals to generate a digital sensor data signal;
a first touch-determination unit detecting whether a touch exists based on the digital sensor data signal for a plurality of frames, and operating in a power saving mode; and
a second touch-determination unit detecting whether and where a touch exists based on the digital sensor data signal for the plurality of frames, and operating in a normal mode.
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Accused Products
Abstract
A display device includes a display panel, a plurality of pixels formed on the display panel, a plurality of sensing units formed on the display panel and generating sensor output signals in response to a touch exerted on the display panel, a sensing signal processor receiving and processing an analog sensor data signal originated from the sensor output signals to generate a digital sensor data signal, a first touch-determination unit detecting whether a touch exists based on the digital sensor data signal for a plurality of frames, and operating in a power saving mode, and a second touch-determination unit detecting whether and where a touch exists based on the digital sensor data signal for the plurality of frames, and operating in a normal mode. The display device includes hardwired logic units for detecting the touch, it detects the touch using the hardwired logic units in the power saving mode and converts the operation mode to the normal mode when the touch is detected, thus reducing power consumption.
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Citations
30 Claims
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1. A display device comprising:
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a display panel;
a plurality of pixels formed on the display panel;
a plurality of sensing units formed on the display panel and generating sensor output signals in response to a touch exerted on the display panel;
a sensing signal processor receiving and processing an analog sensor data signal originated from the sensor output signals to generate a digital sensor data signal;
a first touch-determination unit detecting whether a touch exists based on the digital sensor data signal for a plurality of frames, and operating in a power saving mode; and
a second touch-determination unit detecting whether and where a touch exists based on the digital sensor data signal for the plurality of frames, and operating in a normal mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for driving a display device including a display panel and a plurality of sensing units generating sensor output signals in response to a touch exerted on the display panel, the apparatus comprising:
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a sensing signal processor receiving and processing an analog sensor data signal originated from the sensor output signals to generate a digital sensor data signal;
a first touch-determination unit detecting whether a touch exists based on the digital sensor data signal for a plurality of frames and operating in a power saving mode; and
a second touch-determination unit detecting whether and where a touch exists based on the digital sensor data signal for the plurality of frames and operating in a normal mode. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of driving a display device including a display panel, a plurality of sensing units generating sensor output signals in response to a touch exerted on the display panel, and first and second touch-determination units determining the existence of a touch based on the sensor output signals, the method comprising:
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generating a digital sensor data signal based on the sensor output signals;
determining whether a touch exists based on the digital sensor data signal in the first touch-determination unit;
cutting the first touch-determination unit off from a power and supplying the power to the second touch-determination unit when the first touch determination unit determines that a touch exists;
determining whether a touch exists based on the digital sensor data signal in the second touch-determination unit; and
supplying the power to the first touch-determination unit and cutting the second touch-determination unit off from the power after a predetermined time when the second touch determination unit determines that there is no touch. - View Dependent Claims (28, 29, 30)
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Specification