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Display device, system having the same, and pixel

  • US 9,852,691 B2
  • Filed: 05/12/2015
  • Issued: 12/26/2017
  • Est. Priority Date: 01/19/2015
  • Status: Active Grant
First Claim
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1. A display device, comprising:

  • a display panel including a substrate, a plurality of pixels on the substrate each comprising an organic light-emitting diode (OLED) and a driving transistor and a plurality of wireless power receivers formed in a thin film that is arranged between the substrate and the driving transistor, wherein each of the wireless power receivers is connected to a group of the pixels;

    a wireless power transmitter configured to;

    i) generate power based on an initial power supply voltage and ii) wirelessly transmit the generated power to the wireless power receivers, wherein each of the wireless power receivers is configured to;

    i) wirelessly receive the generated power from the wireless power transmitter, ii) convert the received power into a first power supply voltage, the first power supply voltage being a direct current (DC) voltage, and iii) provide the first power supply voltage to a first electrode of each driving transistor of respective pixels, wherein the wireless power transmitter includes a power transmitter on the display panel to transmit alternating current (AC) power as the generated power to the wireless power receivers;

    a power supply configured to;

    i) generate the initial power supply voltage, ii) provide the initial power supply voltage to the wireless power transmitter and iii), while providing the initial power supply voltage to the wireless power transmitter, generate a second power supply voltage and provide the second power supply voltage to the pixels via a common power supply line electrically connected to each of the pixels, wherein the second power supply voltage is supplied to a terminal of the OLED of each pixel;

    a display panel driver configured to drive the display panel; and

    a timing controller configured to control the display panel driver.

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