Contact detecting device and display device having detection lines of different lengths
First Claim
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1. A contact detecting device comprising:
- a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or in proximity to a detecting surface;
a contact driving scanning section configured to scan application of driving voltage to said contact responding section in one direction within said detecting surface, and control output of said electric change in time series; and
a detecting section configured to detect occurrence of said electric change from a voltage change in a detection line group, and identify a position of the occurrence,wherein said contact driving scanning section performs a plurality of scans of different regions of said contact responding section in parallel with each other, and outputs a plurality of said electric changes in parallel with each other, the contact responding section includes a plurality of detection lines that each corresponds to a region of the different regions of said contact responding section, each of the plurality of detection lines having a longitudinal length different from each other according to the different regions of said contact responding section, andthe smaller a distance in a direction along the longitudinal length between the detecting section and the region, the shorter the longitudinal length of the detection line for the corresponding region.
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Abstract
A contact detecting device including: a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or proximity to a detecting surface; and a contact driving scanning section configured to scan application of driving voltage to the contact responding section in one direction within the detecting surface, and control output of the electric change in time series, wherein the contact driving scanning section performs a plurality of scans of different regions of the contact responding section in parallel with each other, and outputs a plurality of the electric changes in parallel with each other.
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Citations
13 Claims
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1. A contact detecting device comprising:
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a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or in proximity to a detecting surface; a contact driving scanning section configured to scan application of driving voltage to said contact responding section in one direction within said detecting surface, and control output of said electric change in time series; and a detecting section configured to detect occurrence of said electric change from a voltage change in a detection line group, and identify a position of the occurrence, wherein said contact driving scanning section performs a plurality of scans of different regions of said contact responding section in parallel with each other, and outputs a plurality of said electric changes in parallel with each other, the contact responding section includes a plurality of detection lines that each corresponds to a region of the different regions of said contact responding section, each of the plurality of detection lines having a longitudinal length different from each other according to the different regions of said contact responding section, and the smaller a distance in a direction along the longitudinal length between the detecting section and the region, the shorter the longitudinal length of the detection line for the corresponding region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display device comprising:
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a display section configured to provide light modulation according to an input video signal, and output light after the modulation from a display surface; a display driving scanning section having a plurality of pixel lines, the display driving scanning section configured to perform a scan operation of applying driving voltage for said light modulation to each pixel line in a direction orthogonal to the pixel lines; and a detecting section configured to detect occurrence of said electric change from a voltage change in a detection line group, and identify a position of the occurrence; and a contact responding section configured to produce an electric signal change in response to an object to be detected coming into contact with or proximity to said display surface is formed within said display section, wherein said display driving scanning section doubles as a contact driving scanning section configured to scan application of driving voltage to said contact responding section in one direction within said display surface, and control output of said electric signal change in time series, and said contact driving scanning section performs a plurality of scans of different regions of said contact responding section in parallel with each other, and outputs a plurality of said electric signal changes in parallel with each other, the contact responding section includes a plurality of detection lines that each corresponds to a region of the different regions of said contact responding section, each of the plurality of detection lines having a longitudinal length different from each other according to the different regions of said contact responding section, and the smaller a distance in a direction along the longitudinal length between the detecting section and the region, the shorter the longitudinal length of the detection line for the corresponding region. - View Dependent Claims (10, 11, 12, 13)
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Specification