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US 9,426,882 B2Granted
Flexible printed circuit for connecting touch screen and liquid crystal display device using the same
AssigneeLG Display Co., Ltd.
InventorsSungChul Kim, Sujin Kwon
Life of this patent
Estimating the term…
Abstract
Discussed is a Flexible Printed Circuit (FPC). The FPC includes a plurality of touch lines respectively connected to a plurality of touch electrode lines, a first film adhered to the touch lines, a second film overlapping the first film at an upper end surface of the first film and covering the touch lines, and a feedback compensation signal electrode adhered to a lower end surface of the first film, and receiving a feedback compensation signal for removing noise.
Claims9
A Flexible Printed Circuit (FPC) for connecting a touch screen, comprising:
- a plurality of touch lines respectively connected to a plurality of touch electrode lines;
- a first film adhered to the touch lines;
- a second film overlapping the first film at an upper end surface of the first film and covering the touch lines;
- and
- a feedback compensation signal electrode adhered to a lower end surface of the first film, and receiving a feedback compensation signal for removing noise,
- wherein the feedback compensation signal electrode is provided as a plurality of lines disposed under and respectively corresponding to the touch lines in a one-to-one manner, and
- wherein the feedback compensation signal electrode receives the feedback compensation signal that inverts a feedback common voltage from a display panel.
4 more elements
A Liquid Crystal Display (LCD) device, comprising:
- a panel, a plurality of data lines and a plurality of gate line being arranged in the panel;
- a touch screen comprising a plurality of touch electrodes for sensing a touch;
- a plurality of touch electrode lines respectively connected to the touch electrodes;
- a touch IC determining whether the touch electrodes are touched using a sensing signal generated by a driving signal applied to the touch electrodes;
- a touch board connector mounted on the touch board with the touch IC mounted thereon, and connected to the touch IC;
- a Flexible Printed Circuit (FPC) connecting the touch electrode lines to the touch board connector;
- a common voltage generator supplying a common voltage to a plurality of common electrodes disposed in the panel;
- and
- a compensation signal generator inverting a noise signal fed back from a feedback common voltage from the panel to generate a feedback compensation signal, and transferring the feedback compensation signal to the touch board connector,
- wherein a feedback compensation signal electrode receiving the feedback compensation signal through the touch board connector and a plurality of touch lines respectively connected to the plurality of the touch electrode lines are disposed in the FPC,
- the touch lines are adhered to an upper end surface of a first film and the feedback compensation signal electrode is adhered to a lower end surface of the first film, and
- the feedback compensation signal electrode is provided as a plurality of lines disposed under and respectively corresponding to the touch lines in a one-to-one manner, and
- wherein the feedback compensation signal electrode receives the inverted noise signal fed back from the panel.
10 more elements
Dependencies are inferred from the claim text.