APPARATUS FOR TOUCH SENSING, DISPLAY DEVICE, AND OPERATING METHOD FOR THE SAME
First Claim
1. A touch sensing apparatus comprising:
- a sense unit connected to one of a plurality of sense scan lines and a sense line;
a location detection unit that detects a location of a touch from a sense signal transmitted from the sense unit through the sense line on receipt of a trigger signal indicating that the location detection unit is to operate and does not detect the location on receipt of a trigger signal indicating that the location detection unit is to not operate; and
a determination and trigger unit that determines whether a touch is sensed from the sense signal transmitted from the sense unit, generates the trigger signal that instructs whether or not the location detection unit is to operate, and transmits the trigger signal to the location detection unit,wherein the determination and trigger unit comprises a logic operation circuit which generates the trigger signal when the sense signal implies that the touch is sensed while a sense driving signal is applied to at least one of the plurality of sense scan lines.
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Accused Products
Abstract
A touch sensing apparatus includes: a sense unit connected to a sense scan line and a sense line; a location detection unit that detects a location of a touch from a sense signal transmitted from the sense unit through the sense line; and a determination and trigger unit that determines whether a touch is sensed from the sense signal, generates a trigger signal that instructs whether or not to operate the location detection unit, and transmits the trigger signal to the location detection unit. The determination and trigger unit includes a logic operation circuit that generates a trigger signal for operation of the location detection unit when the sense signal implies that a touch is sensed while a sense driving signal is applied to at least one of a plurality of sense scan lines. The location detection unit is operated at a minimum to minimize power consumption.
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Citations
20 Claims
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1. A touch sensing apparatus comprising:
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a sense unit connected to one of a plurality of sense scan lines and a sense line; a location detection unit that detects a location of a touch from a sense signal transmitted from the sense unit through the sense line on receipt of a trigger signal indicating that the location detection unit is to operate and does not detect the location on receipt of a trigger signal indicating that the location detection unit is to not operate; and a determination and trigger unit that determines whether a touch is sensed from the sense signal transmitted from the sense unit, generates the trigger signal that instructs whether or not the location detection unit is to operate, and transmits the trigger signal to the location detection unit, wherein the determination and trigger unit comprises a logic operation circuit which generates the trigger signal when the sense signal implies that the touch is sensed while a sense driving signal is applied to at least one of the plurality of sense scan lines. - 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 display panel having a plurality of pixels that display an image and a plurality of sense units, each sense unit to being capable of generating a corresponding sense signal, and the plurality of pixels and the plurality sense units being arranged in a matrix format; a location detection unit that detects a location of a touch on the display panel from the generated sense signal on receipt of a trigger signal indicating that the location detection unit is to operate and does not detect the location on receipt of a trigger signal indicating that the location detection unit is to not operate; and a determination and trigger unit that determines whether the touch is sensed from the sense signal, generates the trigger signal to instruct whether or not to operate the location detection unit, and transmits the trigger signal to the location detection unit, wherein the determination and trigger unit generates the trigger signal for operation of the location detection unit when at least one sense signal transmitted to one row-direction sense unit or one column-directional sense unit implies that the touch is sensed. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A driving method of a display device including a display panel having a plurality of pixels displaying an image and a plurality of sense units, each sense unit being capable of generating a corresponding sense signal, the pixels and the sense units being arranged in a matrix format, a location detection unit determining a location of touch from the sense signal, and a determination and trigger unit instructing whether or not to operate the location detection unit from the sense signal, the driving method comprising:
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generating the sense signal by applying a predetermined voltage to one row-direction sense unit or one column-directional sense unit among the plurality of sense units; generating a first trigger signal that instructs the location detection unit to operate when the generated sense signal implies that the touch is sensed; and determining a location of a touch from the sense signal according to the generated first trigger signal. - View Dependent Claims (18, 19, 20)
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Specification