Display device and voltage adjusting method therefor
First Claim
1. A method of adjusting a voltage of a plurality of initial sensing signals output from a plurality of sensing units of a touch-sensitive display, the method comprising:
- selecting an initial sensing signal from initial sensing signals that is inputted;
determining whether the voltage of the selected initial sensing signal is in a predetermined range;
determining a region that the voltage of the initial sensing signal is in, wherein the region is one of a plurality of partitioned regions, the plurality of partitioned regions being above or below the predetermined range, determining a correction value according to the region, and starting an adjusting operation for adjustment of the initial sensing signal based on the correction value, when the voltage of the selected initial sensing signal is not in the predetermined range;
determining whether the adjusting operation for the adjustment of the initial sensing signal has placed the initial sensing signal in the predetermined range; and
stopping the adjustment of the initial sensing signal when the initial sensing signal is in the predetermined range.
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Accused Products
Abstract
A display device includes: a plurality of sensing data lines; a plurality of sensing units that output sensing signals through the plurality of sensing data lines; a signal selector that selects one sensing signal among the plurality of sensing signals; an automatic voltage adjusting unit that, when one sensing signal is selected by the signal selector, performs a controlling operation so as to allow a magnitude of the selected sensing signal to be in a predetermined range; and a voltage generator that adjusts the magnitude of the voltage applied to the sensing data lines based on a control signal output from the automatic voltage adjusting unit. According to the voltage adjusting operation, the sensing signal output through the sensing data line is always in an appropriate range. As a result, the touch determining operation on the sensing units can be accurately performed, so that it is possible to improve reliability of the sensing units.
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Citations
25 Claims
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1. A method of adjusting a voltage of a plurality of initial sensing signals output from a plurality of sensing units of a touch-sensitive display, the method comprising:
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selecting an initial sensing signal from initial sensing signals that is inputted;
determining whether the voltage of the selected initial sensing signal is in a predetermined range;determining a region that the voltage of the initial sensing signal is in, wherein the region is one of a plurality of partitioned regions, the plurality of partitioned regions being above or below the predetermined range, determining a correction value according to the region, and starting an adjusting operation for adjustment of the initial sensing signal based on the correction value, when the voltage of the selected initial sensing signal is not in the predetermined range; determining whether the adjusting operation for the adjustment of the initial sensing signal has placed the initial sensing signal in the predetermined range; and stopping the adjustment of the initial sensing signal when the initial sensing signal is in the predetermined range. - 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 sensing data lines; a plurality of sensing units that output a plurality of sensing signals through the sensing data lines; a signal selector that selects one sensing signal among the sensing signals; an automatic voltage adjusting unit that determines a region that a magnitude of the sensing signal is in, determines a correction value according to the region, and controls the magnitude of the selected sensing signal based on the correction value to be in a predetermined range, wherein the region is one of a plurality of partitioned regions, the plurality of partitioned regions being above or below the predetermined range; and a voltage generator that applies a voltage to the sensing data line based on the output from the automatic voltage-adjusting unit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A touch-sensitive display device having a viewing area, comprising:
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a plurality of variable capacitance touch sensing units disposed throughout the viewing area of the display device; a voltage generator for applying a predetermined voltage to the sensing units; a touch-determining unit monitoring the voltage of the sensing units to determine the occurrence of touch and calculating the location of positions determined to have been touched; and a voltage-adjusting unit for controlling the operation of the voltage generator, the voltage-adjusting unit determining a region that a value of a sensing signal is in and determining a correction value for the sensing signal according to the region, wherein the region is one of a plurality of partitioned regions, the plurality of partitioned regions being above or below the predetermined range. - View Dependent Claims (24, 25)
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Specification