OLED illumination device with integrated proximity sensor
First Claim
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1. An OLED device comprising:
- an anode segmented into a plurality of anode segments, at least two of the anode segments defining OLED segments,a common cathode shared by the OLED segments,an active stack disposed between the anode and the common cathode,a driver configured to supply a same predefined voltage to each of the OLED segments in parallel with each other, anda capacitance measuring unit for measuring a plurality of capacitance coefficients between the at least two anode segments and/or between at least one anode segment and a reference point, respectively,wherein the driver is a high frequency generator.
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Abstract
The invention concerns an OLED device with a cathode 1, an anode 2 and an active stack 3, wherein the anode 1 is segmented into a plurality of anode segments 8 each defining an OLED segment 4. Further, a capacitance measuring unit 12 is provided which is arranged for measuring a plurality of capacitance coefficients between two anode segments 8 and/or between an anode segment 8 and surrounding earth, respectively. This way, an OLED device for illumination purposes with a reliable proximity sensing function is achieved.
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Citations
19 Claims
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1. An OLED device comprising:
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an anode segmented into a plurality of anode segments, at least two of the anode segments defining OLED segments, a common cathode shared by the OLED segments, an active stack disposed between the anode and the common cathode, a driver configured to supply a same predefined voltage to each of the OLED segments in parallel with each other, and a capacitance measuring unit for measuring a plurality of capacitance coefficients between the at least two anode segments and/or between at least one anode segment and a reference point, respectively, wherein the driver is a high frequency generator. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An OLED device comprising
a cathode, an anode segmented into a plurality of anode segments, at least two of the anode segments defining OLED segments, an active stack disposed between the anode and the cathode, and a capacitance measuring unit for measuring a plurality of capacitance coefficients between the at least two anode segments and/or between at least one anode segment and a reference point, respectively, wherein the capacitance measuring unit includes a driver configured to supply the OLED segments with a predefined voltage for measuring the plurality of capacitance coefficients, and wherein the driver is a high frequency generator.
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14. An OLED device comprising
an anode segmented into a plurality of anode segments, a cathode segmented into a plurality of cathode segments corresponding to the plurality of anode segments, for at least two of the anode segments and the corresponding cathode segments, an active stack disposed between the anode segments and the cathode segments, defining at least two OLED segments, and a capacitance measuring unit for measuring a plurality of capacitance coefficients between at least two anode segments and/or between at least one anode segment and a reference point, respectively, wherein the capacitance measuring unit comprises: -
a driver, wherein the driver and the at least two OLED segments are all connected in series with each other and where the driver is configured to supply a predetermined voltage to the series connection, and a plurality of current sensors each configured to detect a current flowing through one of the OLED segments in response to the predetermined voltage. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification