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US 12,591,340 B2Granted
Micro-led touch display device
AssigneeLG Display Co., Ltd.
InventorWonchang Do
Life of this patent
Estimating the term…
Abstract
Disclosed is a micro-LED touch display device in which an optimized partial sensing scheme is applied to a less-touch-sensitive area where an area size of a touch sensing block is small. The micro-LED touch display device includes a display panel including a plurality of pixels, each including a micro-LED, and a micro-driver that controls an operation of the plurality of pixels, wherein a display area of the display panel is divided into a plurality of touch pixel blocks, wherein each analog front end circuit is disposed in each of the plurality of touch pixel blocks and is configured to drive each of the plurality of touch pixel blocks, based on an individual touch driving signal.
Claims17
A micro-LED touch display device comprising:
- a display panel including:
- a plurality of pixels, each including a micro-LED;
- a micro-driver for controlling an operation of the plurality of pixels;
- and
- a plurality of analog front end circuits,
- wherein a display area of the display panel is divided into a plurality of touch pixel blocks,
- wherein a number of pixels included in each of the plurality of touch pixel blocks varies,
- wherein each analog front end circuit is disposed in each of the plurality of touch pixel blocks and is configured to drive corresponding one of the plurality of touch pixel blocks based on an individual touch driving signal,
- wherein the analog front end circuit disposed in a touch pixel block having a number of pixels smaller than a reference value is configured to apply a touch driving signal including at least one of an increased frequency and an increased pulse count relative to that applied to another touch pixel block.
6 more elements
A micro-LED touch display device comprising:
- a display panel including:
- a plurality of pixels, each including a micro-LED;
- and
- a micro-driver for controlling an operation of the plurality of pixels;
- and
- a plurality of analog front-end (AFE) circuits,
- wherein a display area of the display panel is divided into a plurality of touch pixel blocks, including:
- a first touch pixel block including a predetermined number of pixels;
- a second touch pixel block including a first number of a pixels, the first number is being smaller than the predetermined number,
- wherein each of the plurality of analog front-end circuits is disposed in and configured to individually drive a corresponding one of the plurality of touch pixel blocks based on a respective touch driving signal,
- wherein a first analog front-end circuit is disposed in the first touch pixel block and is configured to apply a first touch driving signal to the first touch pixel block,;
- and
- wherein a second analog front end circuit is disposed in the second touch pixel block and is configured to increase at least one of a frequency or a number of pulses of a second touch driving signal to be greater than a corresponding one of a frequency or a number of pulses of the first touch driving signal, and to apply the second touch driving signal having the at least one of the frequency or the number of pulses increased to the second touch pixel block having the first number of pixels smaller than the predetermined number.
10 more elements
A micro-LED touch display device comprising:
- a display panel including a plurality of pixels, each including a micro-LED,
- wherein a display area of the display panel is divided into a plurality of touch pixel blocks for touch sensing, the plurality of touch pixel blocks respectively including different numbers of pixels including a touch pixel block having a number of pixels smaller than a reference value,
- wherein the display panel is configured to operate in a time-division manner such that a display period for displaying an image and a touch period for sensing touch are temporally separated from each other,
- wherein during the touch period, each of the plurality of touch pixel blocks uses cathode electrodes of the corresponding micro-LEDs as electrodes for touch sensing,
- wherein each touch pixel block of the plurality of touch pixel blocks includes an analog front-end circuit disposed in and configured to individually drive the corresponding touch pixel block based on a respective touch driving signal
- wherein the analog front-end circuit disposed in the touch pixel block having the number of pixels smaller than the reference value is configured to increase at least one of a frequency or a number of pulses of the respective touch driving signal relative to another touch pixel block and to apply the respective touch driving signal having the at least one of the frequency or the number of pulses increased to the touch pixel block having the number of pixels smaller than the reference value.
3 more elements
Dependencies are inferred from the claim text.