Patent application number | Description | Published |
20080238524 | LEVEL SHIFTER CONCEPT FOR FAST LEVEL TRANSIENT DESIGN - A driving circuit is provided by the present invention. The driving circuit includes a level shifter, a buffer and a switch. The switch is coupled between the level shifter and the buffer. While the level shifter is transiting, the switch is turned off, and the switch is turned on after the level shifter completes the transition. Therefore, the transition time of the level shifter is different from the transition time of the buffer so as to avoid simultaneously conducting large currents to adversely affect the transition capability of the level shifter. | 10-02-2008 |
20090033603 | PROJECTION TYPE DISPLAY APPARATUS - A display apparatus has several light emitting elements and several lenses. The light emitting elements generate light of a first and second part of a frame respectively during a first and second period. The lenses pass through by the light from the light emitting elements, and operate to form images of the first and second part of the frame at a first and second location during the first and second period, respectively. | 02-05-2009 |
20090091264 | PIXEL CIRCUIT - A pixel circuit has a light emitting diode, a first switch, a driving transistor, a capacitor, and a second switch. The first switch has a first end coupled to the light emitting diode, wherein the first switch is controlled by a first scan signal. The driving transistor has source/drains respectively coupling to a first power source terminal and a second end of the first switch. The capacitor couples between a gate of the driving transistor and a second power source terminal. The second switch respectively couples the second end of the first switch to the capacitor, and couples the gate and the source/drain of the driving transistor together when a second scan signal is asserted. | 04-09-2009 |
20090091367 | LEVEL SHIFTER CONCEPT FOR FAST LEVEL TRANSIENT DESIGN - A driver including a first level shifter group and a second level shifter group is provided. The first level shifter group includes at least one first level shifter to receive a first input signal. The second level shifter group includes at least one second level shifter to receive a second input signal. The driver sequentially enables the first level shifter group and the second level shifter group to sequentially transfer voltage levels of the first input signal and the second input signal. | 04-09-2009 |
20090091520 | DATADRIVER AND METHOD FOR AN OLED DISPLAY - A data driver for an OLED display has a resistor string, digital-to-analog converters and converting transistors. The resistor string provides a set of gamma voltages. Each of the digital-to-analog converters converts an input word into an output voltage selected from the gamma voltages. Each of the converting transistors conducts a driving current and having a gate-to-source voltage determined by the output voltage from one of the digital-to-analog converters. A method of data driving for an OLED display is also disclosed. | 04-09-2009 |
20090096721 | PIXEL CIRCUIT - A pixel circuit has a light emitting diode, a driving transistor, a capacitor, a first switch, a second switch, a third switch, and a forth switch. The driving transistor has a drain, coupled to a second end of the light emitting diode. The capacitor is coupled between a gate of the driving transistor and the ground terminal. The third switch is coupled between the source and the gate of the driving transistor. The fourth switch is coupled between the second end of the light emitting diode and a data line. The first switch is off, the second is on, and the third is on during the reset period; the first switch is off, the second is off, and the third is on during the programming period; and the first switch is on, the second is on, and the third is off during the display period. | 04-16-2009 |
20100052764 | LEVEL SHIFTER CONCEPT FOR FAST LEVEL TRANSIENT DESIGN - A driving circuit is provided by the invention. The driving circuit includes a level shifter, a buffer and a switch. The switch is coupled between an operation voltage and a power supply terminal of the first buffer for controlling a power-supplying time of the first buffer. While the level shifter is transiting, the switch is turned off, and the switch is turned on after the level shifter completes the transition. Therefore, the transition time of the level shifter is different from the transition time of the buffer so as to avoid simultaneously conducting large currents to adversely affect the transition capability of the level shifter. | 03-04-2010 |
20100086097 | SHIFT REGISTER CIRCUIT AND DISPLAY MODULE - A shift register circuit includes a latch unit, a leakage current control unit, and a first output unit. The latch unit outputs a latch signal in accordance with a clock signal and an input signal. The first output unit outputs an output signal in accordance with the latch signal. The leakage current control unit is electrically connected between the latch unit and the first output unit for outputting the latch signal to the first output unit in accordance with the clock signal. | 04-08-2010 |
20110037753 | PIXEL CIRCUIT - A pixel circuit has a light emitting diode, a first driving transistor, a second driving transistor, a capacitor, and a switch unit. When a scan signal is asserted, the switch unit couples sources/drains of the second driving transistor respectively to a first and a second source/drain of the first driving transistor, and couples a gate and second source/drain of the first driving transistor together. When the scan signal is de-asserted, the switch unit decouples one of the sources/drains of the second driving transistor from the first/second source/drain of the first driving transistor, and decouples the gate from the second source/drain of the first driving transistor. | 02-17-2011 |
20110148829 | PIXEL CIRCUIT - A pixel circuit has an organic light emitting diode, a driving transistor, a capacitor and a first switch. The organic light emitting diode has a first end coupled to a first power source terminal. The driving transistor has a source and a drain respectively coupled to a second power source terminal and a second end of the light emitting diode. The capacitor couples a gate of the driving transistor to a reference voltage terminal. The first switch couples the second end of the light emitting diode to the capacitor, and couples the gate and the drain of the driving transistor together when a first scan signal is asserted. | 06-23-2011 |
20110148843 | PIXEL CIRCUIT - A pixel circuit has an organic light emitting diode, a driving transistor, a capacitor and a first switch. The organic light emitting diode has a first end coupled to a first power source terminal. The driving transistor has a source and a drain respectively coupled to a second power source terminal and a second end of the light emitting diode. The capacitor couples a gate of the driving transistor to a reference voltage terminal. The first switch couples the second end of the light emitting diode to the capacitor, and couples the gate and the drain of the driving transistor together when a first scan signal is asserted. | 06-23-2011 |
20110175896 | DISPLAY DRIVING CIRCUIT AND METHOD THEREOF - A display driving circuit has a scan switch, an assistant unit, several storage switches, and several storage units. The scan switch couples to a data line. The assistant unit couples to the scan switch. The storage switches couple to the assistant unit. Each storage unit couples to the assistant unit by one of the storage switches. The assistant unit is shared by the storage units to compensate for several driving voltages or several driving currents of the storage units. | 07-21-2011 |