Electronic device having force touch function
First Claim
Patent Images
1. An electronic device having a force touch function comprising:
- an image display module having a touch electrode;
a cover window attached to a front surface of the image display module;
an electrically grounded housing for receiving the image display module therein, and supporting the cover window, the housing including a housing plate that covers a rear surface of the image display module;
a panel moving part disposed between the housing plate and the image display module; and
a driving circuit for operating in a first touch mode to sense a touch force based on a sensed mutual capacitance varying with distance between the touch electrode and the housing plate which are spaced from each other with the panel moving part interposed in-between, and the driving circuit operating in a second touch mode to sense a touch position based on a sensed self-capacitance of the touch electrode; and
a host controller to control the image display module to drive display of an image during a display mode set in a first period of a first frame and a first period of a second frame, control the driving circuit to operate in the first touch mode during a second period of the first frame, and control the driving circuit to operate in the second touch mode during a second period of the second frame.
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Abstract
An electronic device has a force touch function. The electronic device includes an image display module having a touch electrode. A cover window attaches to a front surface of the image display module. A housing receives the image display module therein, and supports the cover window. A panel moving part is between the housing and the image display module. A driving circuit senses a touch force based on a distance between the image display module and the housing which are spaced from each other with the panel moving part interposed in-between.
11 Citations
23 Claims
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1. An electronic device having a force touch function comprising:
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an image display module having a touch electrode; a cover window attached to a front surface of the image display module; an electrically grounded housing for receiving the image display module therein, and supporting the cover window, the housing including a housing plate that covers a rear surface of the image display module; a panel moving part disposed between the housing plate and the image display module; and a driving circuit for operating in a first touch mode to sense a touch force based on a sensed mutual capacitance varying with distance between the touch electrode and the housing plate which are spaced from each other with the panel moving part interposed in-between, and the driving circuit operating in a second touch mode to sense a touch position based on a sensed self-capacitance of the touch electrode; and a host controller to control the image display module to drive display of an image during a display mode set in a first period of a first frame and a first period of a second frame, control the driving circuit to operate in the first touch mode during a second period of the first frame, and control the driving circuit to operate in the second touch mode during a second period of the second frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device having a force touch function comprising:
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an image display module; a cover window attached to a front surface of the image display module; a housing for receiving the image display module therein, and supporting the cover window, the housing including a housing plate that covers a rear surface of the image display module; a base substrate; a back plate attached to a rear surface of the base substrate facing the housing plate; a pixel array on the base substrate, the pixel array including a pixel having an organic light emitting device; an encapsulation layer for covering the pixel array; a touch panel attached to the encapsulation layer, the touch panel having a touch electrode; and a conductive layer on a rear surface of the back plate facing the housing plate, wherein the conductive layer comprises a touch force electrode, and includes a single conductive pattern or a plurality of conductive patterns spaced at fixed intervals; a panel moving part disposed between the housing plate and the image display module; and a driving circuit for operating in a first touch mode to sense a touch force based on a sensed mutual capacitance varying with distance between the touch force electrode and the housing plate which are spaced from each other with the panel moving part interposed in-between, and the driving circuit to operate in a second touch mode to sense a touch position based on a sensed self-capacitance of the touch electrode; and a host controller to control the pixel array to drive display of an image during a display mode set in a first period of a first frame and a first period of a second frame, control the driving circuit to operate in the first touch mode during a second period of the first frame, and control the driving circuit to operate in the second touch mode during a second period of the second frame. - View Dependent Claims (14, 15)
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16. An electronic device for sensing a touch, the electronic device comprising:
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an image display module comprising a display panel to display an image in response to an image signal, the image display module including a touch electrode and a transparent conductive layer below the touch electrode; a cover window attached to the front surface of the image display module; a housing comprising a housing plate covering a rear surface of the image display module and sidewalls covering lateral surfaces of the image display module and supporting the cover window, the housing supporting the image display module such that a gap exists between the housing plate and the rear surface of the image display module; a touch driver circuit to sense a position of the touch based on a self-capacitance signal from the touch electrode; a touch force circuit to sense a touch force of the touch based on a change in a mutual capacitance between the housing plate and the transparent conductive layer, the change in the mutual capacitance caused by a change in distance between the transparent conductive layer and the housing plate in response to the touch force and the touch force circuit to generate force data estimating the touch force applied to the image display module; and a host controller to control the image display module to drive display of an image during a display mode set in a first period of a first frame and a first period of a second frame, control the touch driver circuit to sense the position of the touch during a second period of the first frame, and to control the touch force circuit to sense the touch force of the touch during a second period of the second frame. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification