Display device and a touch sensing system including the same
AssigneeSamsung Display Co., Ltd.
InventorSang Hyun Lim
Life of this patent
Estimating the term…
Abstract
A display device including: a display panel in which a plurality of pixels are arranged in an image display area; a touch sensing unit disposed on a surface of the display panel, wherein the touch sensing unit is configured to sense a touch of an electronic pen; a display driving circuit configured to drive the pixels; and a touch sensing circuit configured to generate touch coordinate data by detecting a touch position of the electronic pen, wherein the touch sensing circuit is configured to drive pen touch electrodes so that the electronic pen is electromagnetically charged, and to recognize a touch and a touch position of the electronic pen by detecting a variation of a pen touch sensing signal of the pen touch electrodes.
Claims20
A display device comprising:
- a display panel in which a plurality of pixels are arranged in an image display area;
- a touch sensing unit disposed on the display panel, wherein the touch sensing unit includes first pen touch electrodes arranged in a first direction and second pen touch electrodes arranged in a second direction intersecting the first direction, and wherein the touch sensing unit is configured to sense a touch of an electronic pen;
- a display driving circuit configured to drive the pixels;
- and
- a touch sensing circuit configured to apply pen touch driving signals to drive individual ones of the first pen touch electrodes and individual ones of the second pen touch electrodes to electromagnetically charge the electronic pen, and to recognize a touch position of the electronic pen by detecting variations in individual ones of each touch sensing signal of each of the first pen touch electrodes and detecting variations in individual ones of each touch sensing signal of each of the second pen touch electrodes, wherein
- the first pen touch electrodes are arranged in parallel the first direction in a pen touch sensing area;
- and
- the second pen touch electrodes are arranged in parallel in the second direction in the pen touch sensing area.
A touch sensing system, comprising:
- a display device comprising a display panel in which a plurality of pixels are arranged in an image display area, and a display driving circuit configured to drive the pixels;
- a first touch sensing unit disposed on a surface of the display panel to sense a touch by a user's body part;
- a second touch sensing unit disposed on a surface of the first touch sensing unit to sense a touch of an electronic pen;
- and
- a touch sensing circuit configured to generate touch coordinate data by detecting a touch position of the electronic pen,
- wherein the touch sensing circuit is configured to apply touch driving signals to drive individual ones of pen touch electrodes to electromagnetically charge the electronic pen, and to recognize a touch position of the electronic pen by detecting variations in individual ones of each touch sensing signal of each of the pen touch electrodes;
- wherein the pen touch electrodes comprise:
- first pen touch electrodes arranged in parallel with each other in a first direction;
- and
- second pen touch electrodes arranged in parallel with each other in a second direction crossing the first direction.
An electronic device, comprising:
- a display device for displaying an image and sensing a user's touch,
- wherein the display device comprises:
- a display panel in which a plurality of pixels are arranged in an image display area, and a display driving circuit configured to drive the pixels;
- a first touch sensing unit disposed on a surface of the display panel to sense a touch by a user's body part;
- a second touch sensing unit disposed on a surface of the first touch sensing unit to sense a touch of an electronic pen;
- and
- a touch sensing circuit configured to generate touch coordinate data by detecting a touch position of the electronic pen,
- wherein the touch sensing circuit is configured to apply touch driving signals to drive individual ones of pen touch electrodes to electromagnetically charge the electronic pen, and to recognize a touch position of the electronic pen by detecting variations in individual ones of each touch sensing signal of each of the pen touch electrodes;
- wherein the touch sensing unit comprises:
- first pen touch electrodes arranged in parallel with each other in a first direction in a pen touch sensing area;
- and
- second pen touch electrodes arranged in parallel with each other in a second direction crossing the first direction in the pen touch sensing area.
Dependencies are inferred from the claim text.