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US 11,892,895 B2Granted
Display device
AssigneeSilicon Works Co., Ltd.
InventorJung Min Choi
Life of this patent
Estimating the term…
Abstract
The present disclosure, which relates to a technology for controlling power of a display device, allows reducing power consumption by driving circuits for a display operation and circuits for a touch sensing operation with low power depending on a display operation or a touch sensing operation of a display panel.
Claims16
A method for processing a synchronization signal in a first integrated circuit, the method comprising:
- generating a first synchronization signal as a touch synchronization signal that is divided into a display period set for displaying image data and a touch period set for a touch sensing operation;
- and
- transmitting the first synchronization signal to a second integrated circuit which is included in a source readout integrated circuit, wherein
- a first portion of the second integrated circuit is configured to operate in a low power mode during a touch period based on the first synchronization signal, and
- a second portion of the second integrated circuit is configured to operate in the low power during a display period based on the first synchronization signal.
2 more elements
An integrated circuit comprising:
- a first circuit configured to display image data;
- and
- a second circuit configured to sense a touch or a proximity of an external object, wherein
- the first circuit is configured to operate in a low power mode while the touch or the proximity of the external object is sensed,
- the second circuit is configured to operate in the low power mode while the image data is displayed,
- the integrated circuit is configured to receive a signal of a shared voltage which is commonly used in the first circuit and the second circuit from an external circuit,
- the shared voltage comprises a first voltage level while the touch or the proximity of the external object is sensed by the second circuit, and a second voltage level that is different from the first voltage level while the image data is displayed by the first circuit,
- the integrated circuit is configured to receive a control signal from a control circuit, the control signal controlling low power operations of the first circuit and the second circuit, and
- the control signal comprises a touch synchronization signal that indicates a first time section where the image data is displayed on a panel and a second time section where the touch or the proximity of the external object is sensed.
6 more elements
A method for controlling power in a touch modulation integrated circuit, the method comprising:
- receiving a first synchronization signal as a touch synchronization signal;
- receiving a second synchronization signal as a power synchronization signal that is different from the first synchronization signal;
- and
- outputting a common voltage signal for sensing a touch or a proximity of an external object during a touch period set for touch sensing operation, based on the first synchronization signal, wherein
- the touch modulation integrated circuit is configured to operate in a low power mode during the touch period based on the second synchronization signal, and
- the touch modulation integrated circuit is configured to receive the second synchronization signal from at least one of a microcontroller or a timing controller.
3 more elements
Dependencies are inferred from the claim text.