Patent application number | Description | Published |
20080278090 | Reset Circuit for Power-On and Power-Off - A circuit for resetting a display having at least one driver outputting a driving voltage through an output channel to a corresponding data line of a panel comprises a first switch and a second switch. The first switch is actuated by a control pulse to transfer a reset voltage to the data line of the panel. The second switch is actuated by the control pulse to electrically isolate the output channel of the driver from the data line of the panel, wherein the control pulse is asserted during transient periods resulting from power-on and power-off of the display. | 11-13-2008 |
20090146669 | Capacitive Fingerprint Sensor and the Panel Thereof - A capacitive fingerprint sensor comprises a fingerprint capacitor, a reference capacitor, a first transistor, a second transistor, a third transistor and a fourth transistor. The fingerprint capacitor C | 06-11-2009 |
20090200088 | SENSOR PIXEL AND TOUCH PANEL THEREOF - A sensor pixel and a touch panel using the same are provided herein, wherein the touch panel has m scan lines and n readout lines. The sensor pixel includes a sensing capacitor, a readout transistor, a reset transistor, a base transistor, and a photo transistor. The photo transistor included in the sensor pixel produces a photo leakage current when it is exposed to a light. The light obstruction characteristic of the photo transistor is utilized to detect the locations of the touched sensor pixels. By proper timing control, the present invention not only can be applied to the multi-finger detection, but also is easy to be implemented. | 08-13-2009 |
20090206848 | CAPACITIVE FINGERPRINT SENSOR AND THE PANEL THEREOF - A capacitive fingerprint sensor comprises a fingerprint capacitor, a reference capacitor, a first transistor and a second transistor. The fingerprint capacitor C | 08-20-2009 |
20090206849 | CAPACITIVE FINGERPRINT SENSOR AND THE PANEL THEREOF - A capacitive fingerprint sensor comprises a first transistor, a second transistor, a fingerprint capacitor and a third transistor. The fingerprint capacitor has a capacitance that is either a valley capacitance C | 08-20-2009 |
20090206850 | Capacitive Fingerprint Sensor and the Panel Thereof - A capacitive fingerprint sensor comprises a fingerprint capacitor, a reference capacitor, a first transistor, a second transistor, a comparator and a multiplexer. The fingerprint capacitor has a capacitance that is either a valley capacitance C | 08-20-2009 |
20090206851 | Capacitive Fingerprint Sensor and the Panel Thereof - A capacitive fingerprint sensor comprises a fingerprint capacitor, an integrator, a first transistor, a second transistor and a third transistor. The fingerprint capacitor has a capacitance that is either a valley capacitance C | 08-20-2009 |
20090208069 | Capacitive Fingerprint Sensor and the Panel Thereof - A capacitive fingerprint sensor comprises a fingerprint capacitor, an integrator, a first transistor, a second transistor and a multiplexer. The fingerprint capacitor has a capacitance that is either a valley capacitance C | 08-20-2009 |
20110037457 | READOUT APPARATUS FOR CURRENT TYPE TOUCH PANEL - A readout apparatus for a current type touch panel is provided. The readout apparatus includes a current-to-voltage converter, a voltage gain unit and an analog-to-digital converter (ADC). The current-to-voltage converter converts a sensing current of the current type touch panel to a sensing voltage. An input end of the voltage gain unit is coupled to an output end of the current-to-voltage converter for receiving the sensing voltage. An input end of the ADC is coupled to an output end of the voltage gain unit. An output end of the ADC generates a digital code. | 02-17-2011 |
20110063233 | READOUT APPARATUS AND MULTI-CHANNEL READOUT APPARATUS FOR TOUCH PANEL - A readout apparatus and a multi-channel readout apparatus for a touch panel are provided to integrate different types of readout circuit. The readout apparatus set to a first mode reads the touch panel with a small amount of charges through an integrator. The readout apparatus set to a second mode reads a sensing current of a current type touch panel through a current to voltage converting unit and an inverting amplifier, so as to save a chip area. The multi-channel readout apparatus set to a third mode applies multiple channels to alternatively share an integrator to read the touch panel with a large amount of charges, so that an amount of feedback capacitors (integral capacitors) having a great area can be greatly reduced. Therefore, readout apparatus of the present invention can not only reduce a chip area, but can also be applied to various types of the touch panel. | 03-17-2011 |
20110068848 | MULTI-CHANNEL INTEGRATOR - A multi-channel integrator is provided. The multi-channel integrator includes an integrator and a plurality of channels. Each of the channels includes an input selector and a unit-gain amplifier. The input selector has a common terminal, a first selecting terminal and a second selecting terminal. The input selector selectively electrically connects the common terminal to the first selecting terminal or to the second selecting terminal. The first selecting terminal of the input selector is coupled to an input terminal of the integrator. An input terminal of the unit-gain amplifier is coupled to the second selecting terminal of the input selector. | 03-24-2011 |
20110102037 | CIRCUIT FOR RESETTING SYSTEM AND DELAY CIRCUIT - A reset circuit and a delay circuit are provided. The delay circuit includes a first resistor module, a second resistor module, a switch module and a capacitor module. First terminals of the first and the second resistor modules are coupled respectively to a first voltage and a second voltage. The switch module have a control terminal served as a input terminal of the delay circuit, a first terminal served as a output terminal of the delay circuit, a second terminal coupled to a second terminal of the first resistor module, and a third terminal coupled to a second terminal of the second resistor module. In the delay circuit, the first terminal selectively connected to the second terminal or the third terminal in accordance with the control terminal. The capacitor module couples between the first terminal of the switch module and the second voltage. | 05-05-2011 |
20120139529 | READOUT APPARATUS FOR CURRENT TYPE TOUCH PANEL - A readout apparatus for a current type touch panel is provided. The readout apparatus includes a current-to-voltage converter, a voltage gain unit and an analog-to-digital converter (ADC). The current-to-voltage converter converts a sensing current of the current type touch panel to a sensing voltage. The current-to-voltage converter includes a resistor and a current mirror. The resistor has a first end and a second end. The current mirror has a master current end and a slave current end. An input end of the voltage gain unit is coupled to an output end of the current-to-voltage converter for receiving the sensing voltage. An input end of the ADC is coupled to an output end of the voltage gain unit. An output end of the ADC generates a digital code. | 06-07-2012 |