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US 11,635,837 B2Granted
Display device for temperature correction of an input image signal on a touch display panel
AssigneeSharp Kabushiki Kaisha
InventorsHiroyuki Furukawa, Chie Toridono, Masafumi Ueno
Life of this patent
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Abstract
A display device includes: a temperature distribution obtaining circuit obtaining temperature distribution on a display panel on a basis of a capacitance value signal to be output from a capacitive touch panel overlapping the display panel; and a correcting circuit correcting an input image signal on a basis of the temperature distribution on the display panel, and supplying the input image signal.
Claims7
A display device, comprising:
- a display panel configured to display an image;
- a capacitive touch panel overlapping a surface of the display panel;
- a temperature distribution obtaining circuit configured to obtain a temperature distribution on the surface of the display panel on a basis of a capacitance value signal to be output from the capacitive touch panel;
- and
- a correcting circuit configured to correct an input image signal corresponding to the image, and supply the input image signal to the display panel, the input image signal being corrected on a basis of the temperature distribution on the surface of the display panel obtained by the temperature distribution obtaining circuit, wherein
- the temperature distribution obtaining circuit obtains the temperature distribution on a basis of a high-frequency component of the capacitance value signal.
3 more elements
A display device, comprising:
- a display panel configured to display an image;
- a capacitive touch panel overlapping a surface of the display panel;
- a temperature distribution obtaining circuit configured to obtain a temperature distribution on the surface of the display panel on a basis of a capacitance value signal to be output from the capacitive touch panel;
- and
- a correcting circuit configured to correct an input image signal corresponding to the image, and supply the input image signal to the display panel, the input image signal being corrected on a basis of the temperature distribution on the surface of the display panel obtained by the temperature distribution obtaining circuit, wherein
- the display panel includes a plurality of liquid-crystal display elements, and
- the correcting circuit adjusts an overdrive for increasing a response speed of the liquid-crystal display elements, the overdrive being adjusted on a basis of the temperature distribution on the surface of the display panel obtained by the temperature distribution obtaining circuit.
4 more elements
A display device, comprising:
- a display panel configured to display an image;
- a capacitive touch panel overlapping a surface of the display panel;
- a temperature distribution obtaining circuit configured to obtain a temperature distribution on the surface of the display panel on a basis of a capacitance value signal to be output from the capacitive touch panel;
- and
- a correcting circuit configured to correct an input image signal corresponding to the image, and supply the input image signal to the display panel, the input image signal being corrected on a basis of the temperature distribution on the surface of the display panel obtained by the temperature distribution obtaining circuit, wherein
- the temperature distribution obtaining circuit includes:
- a high-pass filter configured to allow a high-frequency component of the capacitance value signal to pass through;
- an amplitude amount calculating circuit configured to calculate an amount of amplitude of the high-frequency component passing through the high-pass filter;
- and
- a temperature converting circuit configured to convert, to a temperature, the amount of the amplitude of the high-frequency component calculated by the amplitude amount calculating circuit.
7 more elements
Dependencies are inferred from the claim text.