Position detecting device and display device
OwnerSadao YAMAMOTOinventor
Life of this patent
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Abstract
A position detecting device usable with a display is provided. The position detecting device includes a detector formed of a transparent member on a view-surface side of the display, and a shielding device disposed at a rear-surface side of the display configured to shield the detector from interference.
Claims21
A position detecting device usable with a display having a view-surface side and a rear-surface side opposite the view-surface side, the position detecting device comprising:
- a detector formed of a transparent member on the view-surface side of the display;
- and
- a shielding device disposed at the rear-surface side of the display configured to shield the detector from interference.
A display device, comprising:
- a display panel for displaying images, said display panel having a view-surface side and a rear-surface side opposite the view-surface side;
- a detector formed of a transparent member on the view-surface side of the display panel;
- a housing surrounding the rear-surface side of the display panel;
- and
- a shielding device disposed between the rear-surface side of the display panel and the housing, said shielding device configured to shield the detector from interference.
A position detecting device usable with a display having a view-surface side and a rear-surface side opposite the view-surface side, said position detecting device comprising:
- a detecting formed of a transparent member on the view-surface side of the display;
- and
- a shielding device provided at the rear-surface side of the display for shielding the detector from interference.
A display device, comprising:
- display having a view-surface side and a rear-surface side, said display for displaying an image;
- a detector formed of a transparent member on the view-surface side of the display;
- a housing formed of metal surrounding the rear-surface side of the display;
- and
- a shield assembly disposed between the rear-surface side of the display and the housing for shielding the detector from interference.
A method of shielding a position detector of a display device from interference, the display device including a display panel having opposing front and rear surface sides, a transparent detector disposed at the front surface side, a position indicator for electromagnetic communication with the detector, and a planar metal shielding device disposed at the rear-surface side of the display panel, the method comprising the steps of:
- receiving an electromagnetic signal from the position indicator at the detector, the electromagnetic signal having a tendency to generate eddy currents in metal surfaces located at the rear surface side of the display;
- and
- reducing the generation of eddy currents in the metal surfaces and blocking electromagnetic interference from being received at the detector using the planar metal shielding device.
Dependencies are inferred from the claim text.