Electrostatic capacitance-type sensor-equipped display device and method of driving the same
First Claim
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1. An electrostatic capacitance-type sensor-equipped display device comprising:
- a display panel with a display surface which displays an image; and
an electrostatic capacitance-type sensor provided on the display panel,the electrostatic capacitance-type sensor including;
a plurality of detection electrodes disposed in a matrix that includes M rows and N columns, where M is greater than 1 and N is greater than 1,each of the detection electrodes being arranged so as to not be in physical contact with each other, being mutually electrically independently provided from each other above the display surface and being configured to detect a variation in electrostatic capacitance; and
a plurality of lead lines provided above the display surface, the lead lines being M×
N in number, the lead lines being respectively connected to the detection electrodes in a one-to-one correspondence, and formed of a metal,whereineach of the detection electrodes is formed of an aggregate of a transparent electrode which is formed of a transparent, electrically conductive material, and a plurality of branch lines which are branched from each of the lead lines,the branch lines are located immediately below the transparent electrode, andeach of the branch lines is in contact with the transparent electrode.
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Abstract
According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.
16 Citations
20 Claims
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1. An electrostatic capacitance-type sensor-equipped display device comprising:
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a display panel with a display surface which displays an image; and an electrostatic capacitance-type sensor provided on the display panel, the electrostatic capacitance-type sensor including; a plurality of detection electrodes disposed in a matrix that includes M rows and N columns, where M is greater than 1 and N is greater than 1, each of the detection electrodes being arranged so as to not be in physical contact with each other, being mutually electrically independently provided from each other above the display surface and being configured to detect a variation in electrostatic capacitance; and a plurality of lead lines provided above the display surface, the lead lines being M×
N in number, the lead lines being respectively connected to the detection electrodes in a one-to-one correspondence, and formed of a metal,wherein each of the detection electrodes is formed of an aggregate of a transparent electrode which is formed of a transparent, electrically conductive material, and a plurality of branch lines which are branched from each of the lead lines, the branch lines are located immediately below the transparent electrode, and each of the branch lines is in contact with the transparent electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16, 17)
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8. A method of driving an electrostatic capacitance-type sensor-equipped display device comprising a display panel and an electrostatic capacitance-type sensor provided on the display panel, the display panel including a first substrate, a second substrate which includes a display surface for displaying an image and is disposed opposite to the first substrate with a gap, a plurality of pixels, and a common electrode provided on the first substrate or the second substrate and shared by the pixels, each of the pixels including a pixel switching element formed on the first substrate and connected to a gate line and a source line, and a pixel electrode formed on the first substrate and connected to the pixel switching element, and the electrostatic capacitance-type sensor including a plurality of detection electrodes disposed in a matrix, the detection electrodes being arranged so as to not be in physical contact with each other, being mutually electrically independently provided above the display surface, being opposed to the common electrode, and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal, the method comprising:
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delivering a control signal to the gate line and a video signal to the source line, in a display operation period, thereby driving the display panel, stopping an input of the control signal and the video signal to the display panel, and driving the electrostatic capacitance-type sensor, in an input position information detection period that does not overlap the display operation period; and writing a potential adjustment signal, which has the same waveform as a write signal which is written in each of the detection electrodes of the electrostatic capacitance-type sensor, in the common electrode in synchronism with the write signal, in the input position information detection period. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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18. An electrostatic capacitance-type sensor-equipped display device comprising:
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a display panel with a display surface which displays an image; and an electrostatic capacitance-type sensor provided on the display panel, the electrostatic capacitance-type sensor including; a plurality of detection electrodes disposed in a matrix, each of the detection electrodes arranged so as to not be in physical contact with each other, mutually electrically independently provided from each other above the display surface, and configured to detect a variation in electrostatic capacitance; and a plurality of lead lines provided above the display surface, respectively connected to the detection electrodes in a one-to-one correspondence, and formed of a metal, wherein each of the detection electrodes is formed of an aggregate of a transparent electrode which is formed of a transparent, electrically conductive material, and a metal line which is electrically connected to each of the lead lines, the metal line is located immediately below the transparent electrode, the metal line extends from one end portion of the transparent electrode to another end portion of the transparent electrode, in a region which is opposed to the transparent electrode, and the metal line is in contact with the transparent electrode in a whole region in which the metal line is opposed to the transparent electrode. - View Dependent Claims (19, 20)
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Specification