Touch panel liquid crystal display device and method of driving the same
AssigneeLG Display Co., Ltd.
InventorsJin-Soo Chung, Tae-Kyoung Sung
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Abstract
Disclosed are a touch panel LCD device capable of improving touch sensing performance by preventing non-uniformity of raw touch data of left and right sides and a method of driving the same. In the touch panel LCD device, a plurality of common lines arranged in a non-display area of a panel and configured to check characteristics of the panel is connected to a load free driving (LFD) signal line by a flexible printed circuit board (FPCB) when the common lines are attached to the FPCB.
Claims4
A touch panel liquid crystal display (LCD) device, comprising:
- a plurality of touch electrodes arranged in a display area of a panel in a matrix form;
- a plurality of checking lines arranged in a non-display area of the panel and configured to check characteristics of the panel;
- and
- an auto-probe (AP) transistor array configured to electrically connect or disconnect the plurality of checking lines from the plurality of touch electrodes based on a control signal,
- wherein the plurality of checking lines are connected to a load free driving (LFD) signal line by a flexible printed circuit board (FPCB).
A method of driving a touch panel liquid crystal display (LCD) device including a plurality of checking lines arranged in a non-display area of a panel and configured to check characteristics of the panel, and an auto-probe (AP) transistor array configured to switch between the plurality of checking lines and a plurality of touch electrodes by a control signal, the method comprising:
- applying a load free driving (LFD) signal to the plurality of checking lines during a touch sensing period.
Dependencies are inferred from the claim text.