Abstract:
A sense signal is continuously received from a capacitive touch-sensing panel. A reference signal is set or adjusted to have a level of the sense signal be in a first relation to that of the reference signal in an initial state, and the sense signal is compared with the reference signal to generate a comparison signal in a sensing state. The comparison signal is outputted with a first logic level when a level of the sense signal is in the first relation to a level of the reference signal, and outputted with a second logic level when a level of the sense signal is in a second relation to a level of the reference signal. Whether a touch action is conducted is determined according to a compared result of occurrences of the first and second logic levels of the comparison signal generated within a preset time period.
Abstract:
For sensing a control point on a capacitive-type panel, first and second voltage signals are respectively received through two sets of receiving lines selected from N receiving lines in response to first and second charge/discharge signals transmitted through two sets of transmitting lines selected from M transmitting lines, respectively, during a first time period. Third and fourth voltage signals are received through two sets of receiving lines selected from the N receiving lines in response to third and fourth charge/discharge signals respectively transmitted through the two sets of transmitting lines, respectively, during a second time period. A characteristic value is generated according to the first, second, third and fourth voltage signals. Repeat the steps to generate characteristic values for neighboring regions defined by different combinations of transmitting lines and receiving lines. Position information of control point(s) on the capacitive-type panel is estimated accordingly.
Abstract:
A capacitive touch keyboard includes a sensor layer, ground plane, a flexible sensed body, and a sensing circuit. The sensor layer includes a substrate and a key sensing cell which disposed on the substrate spaced apart from the ground plane. The flexible sensed body includes a sensed portion and a connected portion connected with the ground plane where the sensed portion obliquely extends to above the key sensing cell such that the flexible sensed body and the key sensing cell jointly form a capacitor structure. The sensing circuit is electrically connected to the sensing cell for probing a capacitance change. Therefore, features of more simplified structure design, tactile feel, and improved durability are provided in a capacitive keyboard.
Abstract:
A touch-sensing electronic device with a press-sensing function includes a cover lens formed with a shielding structure at a first side thereof; a display formed with a first group of sensing electrodes and a second group of sensing electrodes at a second side thereof, wherein the second group of sensing electrodes are spaced from and electrically shielded with the shielding structure while the first group of sensing electrodes are unshielded from the shielding structure; and a control chip electrically connected to both the first group of sensing electrodes and the second group. The control chip senses a first capacitance change occurring in response to a touch-sensing operation at a third side of the cover lens, which is opposite to the second side and senses a second capacitance change occurring in response to a press-sensing operation at the third side of the cover lens.
Abstract:
A touch panel-based switch includes a control circuit layer, a sensing layer, a dielectric layer, and a touch operation layer, stacked in the order. The sensing layer electrically connected to the control circuit layer includes plural sensing cell, and the dielectric layer is flexible. The touch operation layer is flexible as well and includes a button area and an adjacent non-button area. The button area includes a ground plane stacked on the dielectric layer and a first touch cover stacked on the ground plane, and the non-button area includes a second touch cover stacked on the dielectric layer. Plural though openings are provided in the button area corresponding to the sensing cells such that a portion of the dielectric layer is exposed.
Abstract:
A capacitive touch keyboard includes a soft shielding layer, a soft intermediate layer, and a one dimensional sensor layer where the soft intermediate layer is interposed between the other two to form a capacitor structure. The soft shielding layer includes a ground plane, a dielectric material covering on the ground plane, and plural key areas at its outer surface. The one dimensional sensor layer includes plural sensing cells which correspond to the key areas, and respective cells are electrically connected to a capacitance sensing circuit. Therefore, features of more compact size, simplified structure design, and tactile feel are provided in a capacitive keyboard.
Abstract:
A capacitive touch keyboard includes a shielding layer, a intermediate layer, and a one-dimensional sensor layer where the soft intermediate layer is interposed between the other two to form a capacitor structure. The shielding layer includes a ground plane, and plural first key areas at its outer surface. The one-dimensional sensor layer includes plural sensing cells and plural second key areas where the first key areas correspond to the second key areas, and respective cells are electrically connected to a sensing circuit. Therefore, features of more compact size, simplified structure design, and tactile feel are provided in a capacitive keyboard.
Abstract:
A touch display in communication with at least one external electronic device through an external signal cable or a wireless transmission channel is provided. The touch display includes a display module, a touch panel formed on the display module and a control module. The control module is in communication with the touch panel, the display module and the external electronic device. The control module generates touch information in response to touch operation on the touch panel, and converts the touch information into a control instruction. The touch information or the control instruction is transmitted to the external electronic device through the external signal cable or the wireless transmission channel to operate the external electronic device.
Abstract:
A biological feature-sensing device for acquiring biological feature information by sensing a biological feature is provided. The biological feature-sensing device includes a capacitive touch panel and a control circuit. The capacitive touch panel includes signal transmitting lines and signal receiving lines. A first pitch of the signal transmitting lines or a second pitch of the signal receiving lines is greater than or equal to a minimum on-center spacing of the biological feature. The control circuit receives first and second voltage signals through two sets of signal receiving lines in response to first and second charge/discharge signals transmitted through two sets of signal transmitting lines, and generates a characteristic value according to the first and second voltage signals. Many characteristic values corresponding to different combinations of the signal transmitting lines and signal receiving lines are generated accordingly to form a characteristic value matrix representing the biological feature information.
Abstract:
A floating touch method and a touch device are provided. The touch device includes a capacitive touch panel and a sensor circuit. The capacitive touch panel includes separate electrode units and connecting traces corresponding to the separate electrode units one-on-one. At first, the sensor circuit controls the capacitive touch panel to sense a control object within different sensing ranges at different time points to determine a distance-related value between the control object and the capacitive touch panel. Then, the sensor circuit controls the capacitive touch panel to detect a floating touch action of the control object based on the distance-related value. Subsequently, the sensor circuit issues a control signal corresponding to the floating touch action to enable the touch device or the capacitive touch panel to perform a specific function.