Display device with built-in touch sensors
AssigneeLG Display Co., Ltd.
InventorsJoohee LEE, Moonsoo CHUNG, Yonghwa PARK
Life of this patent
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Abstract
A display device with built-in touch sensors comprises: a display panel with built-in touch sensors; and a touch driver that converts a sensed voltage of the touch sensors into sensed data, wherein the touch driver comprises: an enable signal generator that compares the sensed voltage with a preset offset voltage and outputs an enable signal at a first level if the sensed voltage is higher than or equal to the offset voltage and outputs the enable signal at a second level if the sensed voltage is lower than the offset voltage; and an analog-to-digital converter that converts the sensed voltage into the sensed data when the enable signal is at the first level.
Claims17
A display device with built-in touch sensors comprising:
- a display panel with built-in touch sensors;
- and
- a touch driver that converts a sensed voltage of the touch sensors into sensed data,
- wherein the touch driver comprises:
- an enable signal generator that compares the sensed voltage with a threshold voltage and outputs an enable signal at a first level if the sensed voltage is higher than or equal to the threshold voltage and outputs the enable signal at a second level if the sensed voltage is lower than the offset voltage;
- and
- an analog-to-digital converter that converts the sensed voltage into the sensed data when the enable signal is at the first level.
A method of sensing for a touch of a touch screen comprising:
- sensing a voltage on touch sensing line;
- comparing the sensed voltage with a threshold voltage;
- outputting an enable signal at a first level if the sensed voltage is equal to or higher than the threshold voltage;
- outputting the enable signal at a second level if the sensed voltage is above the threshold voltage;
- recognizing the sensed voltage as the sensed data when the enable signal is at the first level.
Dependencies are inferred from the claim text.