Display device and portable terminal
First Claim
1. A portable terminal comprising:
- a resonant circuit comprising a coil and a capacitor for inducing AC power by bringing the resonant circuit into a resonant state, the coil and the capacitor being connected in parallel; and
a power source circuit for generating DC power for driving the display device by rectifying the AC power.
1 Assignment
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Accused Products
Abstract
In order to increase the continuous operating time of a display device driven by a battery or the like, and a portable information terminal using the same, the volume and weight of the battery are increased. Thus, there arises a trade-off between the increased capacity of the battery and the portability of the device/terminal. Therefore, the invention provides a display device with portability ensured, which is capable of operating continuously for long periods and a portable information terminal using the same. In the display device, TFTs and an RFID tag are formed over the same insulating substrate. The RFID tag detects signals from a reader/writer, and generates DC power based on the signals. While the RFID tag is detecting signals, the display device is driven by the DC power generated in the RFID tag.
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Citations
26 Claims
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1. A portable terminal comprising:
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a resonant circuit comprising a coil and a capacitor for inducing AC power by bringing the resonant circuit into a resonant state, the coil and the capacitor being connected in parallel; and
a power source circuit for generating DC power for driving the display device by rectifying the AC power. - View Dependent Claims (25, 26)
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2. A portable terminal comprising:
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a display device for displaying images by controlling multiple pixels arranged in matrix; and
a battery for supplying a first DC power for driving a part of or the entire circuits that constitute the display device, wherein the display device comprises a resonant circuit comprising;
a coil and a capacitor for inducing AC power by bringing the resonant circuit into a resonant state, the coil and the capacitor being connected in parallel, and a power source circuit for generating a second DC power for driving a part of or the entire circuits that constitute the display device by rectifying the AC power - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A display device comprising:
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multiple pixels arranged in matrix;
a resonant circuit having a coil and a capacitor for inducing AC power by bringing the resonant circuit into a resonant state, the coil and the capacitor connected in parallel; and
a power source circuit for generating DC power for driving the display device by rectifying the AC power. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification