ENERGY SENSING LIGHT EMITTING DIODE DISPLAY
First Claim
1. A display device, comprising:
- a plurality of light emitting diodes (LEDs) forming a display of the display device;
a driving circuit coupled to each of the LEDs, the driving circuit configured to drive each LED to emit light; and
a sensing circuit coupled to each of the LEDs, the sensing circuit configured to detect a shadow.
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Accused Products
Abstract
A display that includes energy sensors within the display itself is disclosed. An Organic Light Emitting Diode (OLED) can be made to operate both as a light emitter and as an energy detector. When forward biased with an appropriate driving signal, the OLED emits light via electroluminescence, which can be used to make a portion of an image on the display. In another mode, the OLED can detect energy by converting incoming photons or energy into an electrical signal by the photoelectric effect. By operating OLEDs in the display in both emissive and sensing modes, energy that shines on the display, such as from an outside source can be detected at the same time an image is shown. Additionally, a display including OLEDs can detect light energy generated by the display itself.
39 Citations
20 Claims
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1. A display device, comprising:
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a plurality of light emitting diodes (LEDs) forming a display of the display device; a driving circuit coupled to each of the LEDs, the driving circuit configured to drive each LED to emit light; and a sensing circuit coupled to each of the LEDs, the sensing circuit configured to detect a shadow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A display device, comprising:
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a plurality of light emitting diodes (LEDs) forming a display of the display device; a driving circuit coupled to each of the LEDs, the driving circuit configured to drive each LED to emit light; and a sensing circuit coupled to each of the LEDs, the sensing circuit configured to detect light energy. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a display having a plurality of light emitting diodes (LEDs), the method comprising:
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driving each LED in an emit mode to display an image on the display; switching at least one LED from the emit mode to a sense mode; sensing an electrical signal from the at least one LED in the sense mode; detecting a shadow on the display; and switching the at least one LED from the sense mode to the emit mode. - View Dependent Claims (18, 19, 20)
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Specification