Patent application number | Description | Published |
20090051639 | Method and device for reducing voltage stress at bootstrap point in electronic circuits - A discharging device is used to reduce the voltage level at a bootstrap point in an electronic circuit such as a shift register circuit. In such a circuit, a first transistor in a conducting state receives an input pulse and conveys it to the gate terminal of a second transistor, causing the second transistor to be in a conducting state. This gate terminal is known as a bootstrap point. After receiving the input pulse, an output pulse is produced at one drain/source terminal of the second transistor. During the time period of the output pulse, the first transistor is in a non-conducting state and the voltage level at the bootstrap point is high, imposing a stress upon the first transistor. A discharging circuit consisting of at least one transistor is coupled to the bootstrap point in order to reduce the voltage level at the output pulse period. | 02-26-2009 |
20100067646 | SHIFT REGISTER WITH EMBEDDED BIDIRECTIONAL SCANNING FUNCTION - A shift register comprises a plurality of stages, {S | 03-18-2010 |
20100220082 | Shift Register with Embedded Bidirectional Scanning Function - The present invention relates to a shift register having a plurality of stages electrically coupled to each other in series. Each stage includes a first and second TFT transistor. The first TFT transistor has a get electrically coupled to the output of the immediately prior stage, a drain electrically coupled to the boost point of the stage, and a source configured to receive one of the first and second control signals. The second TFT transistor has a get electrically coupled to the output of the immediately next stage, a drain and a source electrically coupled the drain and the source of the first transistor, respectively. | 09-02-2010 |
20110141073 | PIXEL ARRAY - A pixel array which comprises a display area, a plurality of scan lines and a plurality of drivers is provided. The display area has a first side, a second side in opposition to the first side and a plurality of pixels. The scan lines are electrically connected to the pixels, respectively. The drivers are electrically connected to the scan lines, respectively. The pixels are arranged along the first direction in sequence. The drivers are located on the first side and the second side of the display area, and are arranged along the second direction in sequence. The first direction is orthogonal to the second direction. | 06-16-2011 |
20110170656 | BIDRECTIONAL SHIFTER REGISTER AND METHOD OF DRIVING SAME - A bidirectional shift register includes first, second, third and four control signal bus lines for providing first, second, third and fourth control signals, Bi | 07-14-2011 |
20110286571 | SHIFT REGISTER WITH EMBEDDED BIDIRECTIONAL SCANNING FUNCTION - The present invention relates to a shift register having a plurality of stages electrically coupled to each other in series. Each stage includes a first and second TFT transistor. The first TFT transistor has a get electrically coupled to the output of the immediately prior stage, a drain electrically coupled to the boost point of the stage, and a source configured to receive one of the first and second control signals. The second TFT transistor has a get electrically coupled to the output of the immediately next stage, a drain and a source electrically coupled the drain and the source of the first transistor, respectively. | 11-24-2011 |
20120087461 | BIDIRECTIONAL SHIFTER REGISTER AND METHOD OF DRIVING SAME - A bidirectional shift register includes first, second, third and fourth control signal bus lines for providing first, second, third and fourth control signals, Bi | 04-12-2012 |
20130222357 | GATE DRIVER FOR LIQUID CRYSTAL DISPLAY - A gate driver for driving a TFT-LCD panel includes a number of gate-driver circuits arranged in groups and stages. Each gate-driver circuit has a main driver and an output section. The main driver is used to provide a charging signal to the output section which has two or more output circuits. Each of the output circuits is configured to provide a gate-line signal in response to the charging signal and a clock signal. The gate-driver circuit uses fewer switching elements, such as thin-film transistors, than the conventional circuit. When the gate driver is integrated in a TFT-LCD display panel and disposed within the periphery area around the display area, it is desirable to reduce or minimize the number of switching elements in the gate driver so that the periphery area can be reduced. | 08-29-2013 |