BRIGHTNESS CONTROLLABLE ELECTROLUMINESCENCE DEVICE WITH TACTILE SENSOR SENSING INTENSITY OF FORCE OR INTENSITY OF PRESSURE, FLAT PANEL DISPLAY HAVING THE SAME, MOBILE TERMINAL KEYPAD HAVING THE SAME AND METHOD OF OPERATING THE SAME
First Claim
1. A brightness controllable electroluminescence device with a tactile sensor sensing the intensity of force or the intensity of pressure, comprising:
- a substrate at least a part of which is transparent;
a first electrode formed on the bottom face of the substrate;
an emission layer formed underneath the first electrode;
a second electrode formed underneath the emission layer;
a tactile sensor formed underneath the second electrode and sensing the intensity of force or the intensity of pressure; and
a controller connected to the tactile sensor and adjusting a variation in electric field between the first and second electrodes based on the output of the tactile sensor to control the brightness of light emitted from the emission layer.
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Accused Products
Abstract
Disclosed herein is an electroluminescence device capable of controlling the brightness thereof based on the intensity of force or the intensity of pressure. The electroluminescence device includes a substrate at least a part of which is transparent; a first electrode formed on the bottom face of the substrate; an emission layer formed underneath the first electrode; a second electrode formed underneath the emission layer; a tactile sensor formed underneath the second electrode and sensing the intensity of force or the intensity of pressure; and a controller connected to the tactile sensor and adjusting a variation in electric field between the first and second electrodes based on the output of the tactile sensor to control the brightness of light emitted from the emission layer.
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Citations
17 Claims
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1. A brightness controllable electroluminescence device with a tactile sensor sensing the intensity of force or the intensity of pressure, comprising:
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a substrate at least a part of which is transparent; a first electrode formed on the bottom face of the substrate; an emission layer formed underneath the first electrode; a second electrode formed underneath the emission layer; a tactile sensor formed underneath the second electrode and sensing the intensity of force or the intensity of pressure; and a controller connected to the tactile sensor and adjusting a variation in electric field between the first and second electrodes based on the output of the tactile sensor to control the brightness of light emitted from the emission layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of controlling the brightness of a brightness controllable electroluminescence device with a tactile sensor sensing the intensity of force or the intensity of pressure, the method comprising:
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a step S100 in which at least one of contact resistance of a tactile sensor, piezoresistance of a tactile sensor, capacitance of a tactile sensor and piezoelectric voltage of a tactile sensor, which correspond to the intensity of force or the intensity of pressure applied by a predetermined contact object 1 to a substrate at least a part of which is transparent, is varied; a step S200 in which the output of the tactile sensor is varied based on the variation in the at least one of the contact resistance, the piezoresistance, the capacitance and the piezoelectric voltage; a step S300 in which a controller changes electric field between first and second electrodes arranged having an emission layer formed between the fist and second electrodes based on the variation in the output of the tactile sensor; and a step S400 of controlling the brightness of light emitted from the emission layer based on the electric field variation.
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Specification