TFT DISPLAY, OLED INTERFACE AND METHOD FOR DETECTING THE SPATIAL POSITION OF EXTREMITIES IN A SPATIAL REGION LOCATED IN FRONT OF THE DISPLAY
First Claim
Patent Images
1. A liquid crystal (LC) display, comprising:
- a first substrate layer,a first electrode structure, which comprises a plurality of pixel electrodes and is applied to the first substrate layer,a liquid crystal filling, anda second electrode structure that is designed as a whole area electrode layer and functions as counter electrode for the plurality of pixel electrodes,wherein the LC display is provided with a sensor device for detecting the finger or the hand of a user in a region located in front of the LC display thereby causing changes in an electric field,wherein the second electrode structure functions as the electric field providing electrode of this sensor device receiving an alternating voltage to generate said electric field.
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Abstract
A liquid crystal display (LCD) includes a plurality of display units formed with a first substrate, a color matrix formed on the first substrate, and a common electrode formed on the color matrix, a second substrate spaced from the first substrate, a pixel electrode matrix formed on the second substrate, a liquid crystal material disposed between the common electrode and the pixel electrode matrix. The LCD includes a touch sensing member integrated onto the color matrix of the first substrate.
41 Citations
30 Claims
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1. A liquid crystal (LC) display, comprising:
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a first substrate layer, a first electrode structure, which comprises a plurality of pixel electrodes and is applied to the first substrate layer, a liquid crystal filling, and a second electrode structure that is designed as a whole area electrode layer and functions as counter electrode for the plurality of pixel electrodes, wherein the LC display is provided with a sensor device for detecting the finger or the hand of a user in a region located in front of the LC display thereby causing changes in an electric field, wherein the second electrode structure functions as the electric field providing electrode of this sensor device receiving an alternating voltage to generate said electric field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12)
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8. A sensor circuitry for detecting the presence and/or position of extremities in a region spatially located in front of a liquid crystal (LC) display, comprising:
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several measurement electrodes an electric field-providing electrode receiving an alternating voltage for generating an electric field which takes effect onto the measurement electrodes in dependence of the presence or position of the above mentioned extremities, and an evaluation circuitry for detecting field electric effects onto these measurement electrodes, wherein the electric field-providing electrode is implemented using a VCOM electrode of the LC display.
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- 9. A method for detecting the spatial position of extremities in a detection range that extends in front of a thin film transistor (TFT) liquid crystal (LC) display, in which an electric field is generated by means of a field providing electrode receiving an alternating voltage and voltage levels are detected by means of measurement electrodes that are affected by the spatial position of the extremities to be detected, wherein as field providing electrode a laminar electrode is used, which forms a component part of the LC system of the TFT LC displays.
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13. An OLED interface, comprising:
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a panel layer, an anode electrode layer, a cathode electrode layer, an organic illuminant layer structure that is accommodated between the anode electrode layer and the cathode electrode layer, and an evaluation circuitry, wherein the evaluation circuitry is designed and connected such that in cooperation with at least the anode electrode layer and/or the cathode electrode layer a sensor system is implemented for detecting a finger or a hand of a user in a region in front of the panel layer without or before these contact the OLED interface or a panel element covering that, wherein the anode electrode layer or the cathode electrode layer receive an alternating voltage to create an electric field. - View Dependent Claims (14, 15, 21, 22, 23, 24, 25, 26, 27, 28)
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16. An OLED interface, comprising:
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a panel layer, an OLED layer structure, and a transparent electrode layer, which is bound to the panel layer, wherein the transparent electrode layer is subdivided into a plurality of electrode segments and the plurality of electrode segments form a segment array that comprises segment rows and segment columns, an evaluation circuitry that is configured such that with its help a contactless position or movement detection of a finger of the user may be accomplished in a region located in front of the panel layer, wherein the contactless position or movement detection is carried out by combining several electrode segments of the segment array into a row-like or column-like electrode segment group. - View Dependent Claims (17, 18, 19, 20)
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29. An OLED interface, comprising:
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a carrier layer, an electrode layer that is bound to the carrier layer, and an OLED function layer wherein the electrode layer is subdivided into a plurality of electrode segments and these electrode segments form a segment array that comprises segment rows and segment columns, an evaluation circuitry that is designed such that it may take a switching state in which a contact detection is carried out via the electrode segments of the electrode layer, and may take a switching state in which a contactless position or movement detection of a finger of the user may be carried out in a region located in front of the OLED interface, wherein the contactless position or movement detection is carried out by combining several electrode segments of the segment array into a row-like or column-like electrode segment group.
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30. A method for generating input signals in the context of the movement of a finger of a user on a touchpad component, wherein the touchpad component comprises an OLED layer structure, a carrier layer, and an electrode layer that is bound to the carrier layer, wherein that electrode layer is subdivided into a plurality of electrode segments and these electrode segments form a segment array that comprises segment rows and segment columns, the method comprising:
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detecting signals via the segment rows and segment columns; and evaluating the signals detected via the segment rows and segment columns by means of an evaluation circuitry that is designed such that it may take a switching state in which a contact detection is carried out via the electrode segments of the electrode layer, and may take a further switching state in which a contactless position or movement detection of a finger of the user may be carried out in a region located in front of the touchpad component, wherein the contactless position or movement detection is carried out by combining several electrode segments of the segment array into a row-like or column-like electrode segment group.
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Specification