Patent application number | Description | Published |
20090051634 | Liquid Crystal Display - A liquid crystal display has a substrate, data lines, scan lines, pixel units and a pre-charge circuit. The data lines are disposed on the substrate in a first direction. The scan lines are disposed on the substrate in a second direction substantially perpendicular to the first direction. The pixel units are respectively disposed at the intersections of the data lines and the scan lines. The pre-charge circuit includes a pre-charge potential, a pre-charge capacitor and a pre-charge switch. The pre-charge capacitor has a first electrode coupled to the pre-charge potential. The pre-charge switch has a first terminal for receiving a pre-charge signal, a second terminal coupled to one of the data lines, and a third terminal coupled to a second electrode of the pre-charge capacitor. | 02-26-2009 |
20090129535 | SWITCH SET OF BI-DIRECTIONAL SHIFT REGISTER MODULE - A switch set used in a bi-directional shift register circuit includes a plurality of switch devices. Each switch device is controlled by corresponding control signals to switch the direction of the input signal. One of the switch devices includes a first switch unit for transmitting a shift register signal from a previous shift register to a shift register according to a first control signal, a second switch unit for transmitting a shift register signal from a next shift register to the shift register according to a second control signal. The first and the second control signals have the same frequency as the clock signal of the shift register circuit. | 05-21-2009 |
20090135991 | PRE-CHARGE CIRCUIT AND SHIFT REGISTER WITH THE SAME - A pre-charge circuit includes a receiving module, an enabling module, and a reset module. The receiving module receives the received driving signal of the pre-charge circuit and outputs the receiving driving signal according to a control signal. The enabling module outputs a pre-charge signal when receiving the driving signal. The reset module is electrically coupled between the receiving module and the enabling module for receiving a reset signal to reset the pre-charge signal. | 05-28-2009 |
20090237339 | LIQUID CRYSTAL DISPLAY DEVICE BASED ON DOT INVERSION OPERATION - An LCD device based on dot inversion operation is disclosed. The LCD device includes a plurality of data lines, a plurality of gate lines, a plurality of common lines, and a plurality of pixel units. Each pixel unit includes a data switch and a storage capacitor. The data switch of each pixel unit is coupled to a corresponding data line, a corresponding gate line, and the storage capacitor of same pixel unit. The storage capacitor of each pixel unit is also coupled to the storage capacitor of a corresponding pixel unit disposed diagonal to the pixel unit via a corresponding common line. The LCD device is capable of writing a plurality of low-voltage data signals having different polarities based on different common voltages into the plurality of pixel units so that the dot inversion operation can be operated with lower gray-scale voltage swing. | 09-24-2009 |
20090262884 | SWITCH SET OF BI-DIRECTIONAL SHIFT REGISTER MODULE - A switch set used in a bi-directional shift register circuit includes a plurality of switch devices. Each switch device is controlled by corresponding control signals to switch the direction of the input signal. One of the switch devices includes a first switch unit for transmitting a shift register signal from a previous shift register to a shift register according to a first control signal, a second switch unit for transmitting a shift register signal from a next shift register to the shift register according to a second control signal. The first and the second control signals have the same frequency as the clock signal of the shift register circuit. | 10-22-2009 |
20090267655 | ANALOG BUFFER WITH VOLTAGE COMPENSATION MECHANISM - An analog buffer having voltage compensation mechanism is disclosed for use in a source driving circuit of a liquid crystal display. The analog buffer includes a reference voltage generator, a plurality of capacitors, a plurality of switches, and a plurality of transistors. Each of the capacitors is utilized to store the gate-source voltage of the corresponding turn-on transistor for performing gate-source voltage compensation operation based on the reference voltages provided by the reference voltage generator. Each of the switches functions to control gate-source voltage compensation operation and is turned on/off in response to a corresponding control signal. The analog buffer is capable of compensating the gate-source voltages of turn-on transistors for generating an output voltage having an acceptable tiny offset with respect to an input voltage. | 10-29-2009 |
20090278776 | METHOD FOR DRIVING AN LCD DEVICE - A method for driving an LCD device having a plurality of sets of gate lines is disclosed. The method includes sequentially enabling odd gate lines of a first set of gate lines in ascending order for writing first-polarity data into corresponding pixels based on a first common voltage during a first interval, sequentially enabling even gate lines of the first set of gate lines in ascending order for writing second-polarity data into corresponding pixels based on a second common voltage during a second interval, sequentially enabling even gate lines of a second set of gate lines in descending order for writing second-polarity data into corresponding pixels based on the second common voltage during a third interval, and sequentially enabling odd gate lines of the second set of gate lines in descending order for writing first-polarity data into corresponding pixels based on the first common voltage during a fourth interval. | 11-12-2009 |
20090289878 | LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF - An LCD device and driving method thereof are disclosed. The LCD device includes a source driver, a controller, a voltage generator, a plurality of data lines, a plurality of pixels, and a plurality of demultiplexer modules. The controller provides two sets of control signals. The voltage generator provides an AC common voltage. Each demultiplexer module includes two demultiplexers. The first demultiplexer distributes data signals received from the source driver into a set of data lines based on the first set of control signals. The second demultiplexer distributes data signals received from the source driver into another set of data lines based on the second set of control signals. The driving method is utilized for writing a plurality of low-voltage data signals having different polarities into a plurality of pixels based on different common voltages during different intervals of a frame period. | 11-26-2009 |
20120113070 | GATE DRIVER CIRCUIT AND ARRANGEMENT METHOD OF THE SAME - An arrangement method, applied to a plurality of gate driver modules coupled in series and arranged on two sides of a panel, includes steps of: placing a first gate driver module on a first side of the panel; placing a gate driver set on a second side of the panel; and placing a fourth gate driver module on the first side of the panel. The gate driver set includes a second gate driver module and a third gate driver module serially connected. The output terminal of the first gate driver module is electrically coupled to the second gate driver module and the output terminal of the third gate driver module is electrically coupled to the fourth gate driver module. A gate driver circuit and an arrangement method applied to a plurality of shift register sets coupled in series and arranged on two sides of a panel are also disclosed. | 05-10-2012 |
20120139599 | MULTIPLEX DRIVING CIRCUIT - A multiplex driving circuit receives m master signals and n slave signals, and includes m driving modules for generating m×n gate driving signals. Each driving module includes a voltage boost stage and n driving stages. The voltage boost stage is used for receiving a first master signal of the m master signals and converting the first master signal into a first high voltage signal, wherein a high logic level of the first master signal is increased to a highest voltage by the voltage boost stage. The n driving stages receives the n slave signals, respectively, and receives the first high voltage signal. In response to the highest voltage of the first high voltage signal, the n driving stages sequentially generates n gate driving signals according to the n slave signals. | 06-07-2012 |
20120163529 | SHIFT REGISTER WITH VOLTAGE BOOSTING CIRCUIT - An exemplary shift register is adapted for receiving a preceding-stage output signal to generate a preceding-stage supply signal and outputting an input signal as an extreme value of a current-stage output signal according to the preceding-stage supply signal. The shift register includes an active controller, a voltage boosting circuit and an output circuit. The active controller receives the preceding-stage output signal and thereby produces an active control signal. The voltage boosting circuit receives a first operating voltage, the preceding-stage supply signal and the active control signal, and uses a capacitive coupling effect to change the voltage value of the preceding-stage supply signal and thereby generates an output control signal. The output circuit is electrically coupled to the voltage boosting circuit, the active controller and the input signal and determines the time of outputting the input signal as the extreme value according to the output control signal. | 06-28-2012 |
20120235950 | CIRCUIT FOR DETERMINING POSITIONS OF CONTACTS ON CAPACITIVE POSITION DETECTING PANEL, TOUCH PANEL MODULE AND METHOD FOR DETECTING CONTACTS ON CAPACITIVE POSITION DETECTING PANEL - The invention provides a circuit for determining positions of contacts on a capacitive position detecting panel. The capacitive position detecting panel includes a plurality of sensing lines and driving lines. The circuit includes a plurality of first amplifiers and second amplifiers. The first amplifiers respectively connect to the sensing lines, and the second amplifiers respectively connect to the driving lines. Input nodes of the first amplifiers are connected to a first input signal source, and input nodes of the second amplifiers are selectively connected to the first input signal source or a second input signal source. When the circuit is operated under a first operation mode, the input nodes of the second amplifiers are connected to the first input signal source; and when the circuit is operated under a second operating mode, the input modes of a plurality of specific second amplifiers are connected to the second input signal source. | 09-20-2012 |
20140159799 | MULTIPLEX DRIVING CIRCUIT - A multiplex driving circuit receives m master signals and n slave signals, and includes m driving modules for generating m×n gate driving signals. Each driving module includes a voltage boost stage and n driving stages. The voltage boost stage is used for receiving a first master signal of the m master signals and converting the first master signal into a first high voltage signal, wherein a high logic level of the first master signal is increased to a highest voltage by the voltage boost stage. The n driving stages receives the n slave signals, respectively, and receives the first high voltage signal. In response to the highest voltage of the first high voltage signal, the n driving stages sequentially generates n gate driving signals according to the n slave signals. | 06-12-2014 |