Back to results
US 2026/0093356 A1Published application
Input sensing device and display device including the same
AssigneeLG Display Co., Ltd.
InventorsBeomjin KIM, Sojung JUNG
Life of this patent
Estimating the term…
Abstract
The embodiments relate to an input sensing device and a display device including the same, wherein the input sensing device includes a plurality of analog front-end circuits configured to process touch sensing signals output from a plurality of touch electrodes to generate a sampling signal, and an analog-to-digital converter configured to convert the sampling signal to generate sensing data.
Claims20
An input sensing device comprising:
- a plurality of analog front-end circuits configured to process touch sensing signals output from a plurality of touch electrodes to generate a sampling signal;
- and
- an analog-to-digital converter (ADC) configured to convert the sampling signal to generate sensing data,
- wherein each of the plurality of analog front-end circuits comprises:
- a pre-amplifier configured to amplify the touch sensing signals and output an amplified signal;
- an integration circuit configured to integrate the amplified signal output from the pre-amplifier and generate an integrated signal;
- a sample-and-hold circuit configured to sample the integrated signal and generate the sampling signal;
- and
- a multiplexer circuit configured to electrically connect an output terminal of the sample-and-hold circuit and an input terminal of the ADC in response to an ADC input signal at a turn-on level, the ADC input signal for controlling an amount of a reference current.
6 more elements
A display device comprising:
- a touch panel comprising a plurality of touch electrodes;
- and
- a touch driving circuit configured to process touch sensing signals output from the plurality of touch electrodes to generate a sampling signal,
- wherein the touch driving circuit comprises:
- a plurality of analog front-end circuits configured to process the touch sensing signals output from the plurality of touch electrodes and generate the sampling signal;
- an analog-to-digital converter ADC configured to convert the sampling signal and generate sensing data;
- and
- a controller configured to control the operation timing of the plurality of analog front-end circuits,
- wherein each of the plurality of analog front-end circuits comprises:
- a pre-amplifier configured to amplify the touch sensing signals and output an amplified signal;
- an integration circuit configured to integrate the amplified signal output from the pre-amplifier to generate an integrated signal;
- a sample-and-hold circuit configured to sample the integrated signal to generate the sampling signal;
- and
- a multiplexer circuit configured to electrically connect an output terminal of the sample-and-hold circuit and an input terminal of the ADC in response to a ADC input signal at a turn-on level.
11 more elements
Dependencies are inferred from the claim text.