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US 10,895,929 B2Granted
Display device with touch panel having X, Y and dummy electrodes
AssigneesJapan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
InventorShinya Hashimoto
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel, and an electrostatic capacitive type touch panel which is formed in an overlapping manner with the display panel. A plurality of X electrodes and a plurality of Y electrodes intersecting with the X electrodes. A first signal line supplies signals to the X electrodes, a second signal line supplies signals to the Y electrodes, and the first signal line and the second signal line are formed on a flexible printed circuit board. A dummy electrode is formed adjacent to an electrode portion of each X electrode and electrode portion of each Y electrode, the dummy electrode does not overlap the X electrode and the Y electrode, and the dummy electrode does not electrically connect with the first and second signal lines.
Claims15
A touch panel comprising:
- a plurality of X electrodes formed along a X direction
- a plurality of Y electrodes formed along a Y direction, and
- a flexible printed circuit board connecting the touch panel, the flexible printed circuit board having a first signal line supplying a signal to the plurality of X electrodes and a second signal line supplying a signal to the plurality of Y electrodes
- wherein
- the flexible printed circuit board has a first conductive layer and a second conductive layer,
- a first portion of the first signal line is made of the first conductive layer and extending along the Y direction,
- a second portion of the second signal line is made of the second conductive layer and extending along the X direction,
- wherein the touch panel has a floating electrode which is made of the conductive layer of the plurality of X electrodes and the plurality of Y electrodes, and does not connect the plurality of X electrodes and the plurality of Y electrodes,
- wherein the plurality of X electrodes has a first edge which does not extend along the X direction,
- wherein the plurality of Y electrodes has a second edge which does not extend along the Y direction,
- wherein the floating electrode has a third edge which extends along the first edge and a fourth edge which extends along the second edge,
- wherein the floating electrode does not overlap the X electrode and the Y electrode, and
- wherein the floating electrode does not electrically connect with the first and second signal lines.
10 more elements
A touch panel comprising:
- a plurality of X electrodes formed along a pair of long sides of the touch panel a plurality of Y electrodes formed along a pair of short sides of the touch panel, and
- a flexible printed circuit board connecting the touch panel, the flexible printed circuit board having a plurality of first signal lines electrically connecting the plurality of X electrodes and a plurality of second signal lines electrically connecting the plurality of Y electrodes
- wherein
- the flexible printed circuit board has a first conductive layer and a second conductive layer,
- a first portion of the plurality of first signal lines is made of the first conductive layer and extends in a direction along the pair of long sides,
- a second portion of the plurality of second signal lines is made of the second conductive layer and extends in a direction along the pair of short sides,
- the touch panel has a floating electrode which is between one of the plurality of X electrodes and one of the plurality of Y electrodes, and does not connect the plurality of X electrodes and the plurality of Y electrodes,
- wherein the floating electrode has an edge which does not extend along the pair of long sides and the pair of short edges,
- wherein the floating electrode does not overlap the X electrode and the Y electrode, and
- wherein the floating electrode does not electrically connect with the first and second signal lines.
7 more elements
A display device comprising:
- a display panel;
- a touch panel having a plurality of X electrodes formed along a pair of long sides of the touch panel and a plurality of Y electrodes formed along a pair of short sides of the touch panel, and
- a flexible printed circuit board connecting the touch panel, the flexible printed circuit board having a plurality of first signal lines supplying a signal to the plurality of X electrodes and a plurality of second signal lines supplying a signal to the plurality of Y electrodes
- wherein
- the flexible printed circuit board has a first conductive layer and a second conductive layer,
- a first portion of the plurality of first signal lines is made of the first conductive layer and extends in a direction along the pair of long sides,
- a second portion of the plurality of second signal lines is made of the second conductive layer and extends in a direction along the pair of short sides,
- wherein the touch panel has a plurality of floating electrodes which is formed adjacent to the plurality of X electrodes respectively and does not contact the plurality of X electrodes,
- wherein the plurality of floating electrodes has an edge respectively which does not extend along the pair of long sides and the pair of short edges, and
- wherein the floating electrode does not overlap the X electrode and the Y electrode, and
- wherein the floating electrode does not electrically connect with the first and second signal lines.
8 more elements
Dependencies are inferred from the claim text.