Touch display device
AssigneeLG Display Co., Ltd.
InventorJinhyuk CHOI
Life of this patent
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Abstract
A touch display device according to an embodiment includes a display panel having a plurality of touch electrodes disposed therein and a cover bottom disposed below the backlight unit. At least one touching force sensing gap is present between the display panel and the cover bottom. A specific voltage is applied to the cover bottom. The touch display device not only can sense the position of a touch made by a user but also an amount of touching force with which the user presses against the display panel. The touch display device can provide a wider range of functions.
Claims20
A touch display device comprising:
- a display panel having a plurality of touch electrodes disposed therein, a first driving signal being applied to the plurality of touch electrodes;
- a backlight unit disposed below the display panel;
- and
- a cover bottom disposed below the backlight unit,
- wherein at least a portion of the cover bottom is spaced apart from the backlight unit to form a gap, and
- wherein a second driving signal is applied to the cover bottom while the first driving signal is being applied to at least one touch electrode among the plurality of touch electrodes.
A touch display device comprising:
- a display panel having a plurality of touch electrodes disposed therein, a first driving signal being applied to the plurality of touch electrodes;
- and
- a cover bottom disposed below a backlight unit,
- wherein at least one gap is present between the display panel and the cover bottom,
- wherein at least a portion of the cover bottom comprises a conductive material or a composition of the cover bottom comprises a conductive material, and
- wherein a second driving signal is applied to the cover bottom while the first driving signal is being applied to at least one touch electrode among the plurality of touch electrodes.
A touch display device comprising:
- a display panel having a plurality of touch electrodes disposed therein, a first driving signal being applied to the plurality of touch electrodes;
- a cover bottom disposed below a backlight unit;
- and
- a conductive plate disposed on the cover bottom,
- wherein at least one gap is present between the display panel and the conductive plate, and
- wherein a second driving signal is applied to the conductive plate while the first driving signal is being applied to at least one touch electrode among the plurality of touch electrodes.
Dependencies are inferred from the claim text.