Abstract:
A shift register, a driving circuit and a display device using the same are disclosed. The shift register includes a 1st and a 2nd rectifying elements and 1st˜4th transistors. 1st source/drains of the 1st˜3rd transistors receive a common voltage respectively. The gates of the 1st and 3rd transistors and a 2nd source/drain of the 2nd transistor are coupled to a 2nd terminal of the 2nd rectifying element. The gates of the 2nd and 4th transistors and a 2nd source/drain of the 1st transistor are coupled to a 2nd terminal of the 1st rectifying element. A 1st source/drain of the 4th transistor is coupled to a 2nd source/drain of the 3rd transistor. The 1st terminals of the 1st and 2nd rectifying elements respectively receive input signals and a 1st clock signal. A 2nd source/drain of the 4th transistor receives a 2nd clock signal.
Abstract:
A bit cell of an organic memory is provided. The bit cell of the organic memory comprises an organic memory cell, a first transistor, a current mirror and a second transistor. To connect the organic memory cell to a data line, the first transistor is activated for reading and the second transistor is activated for writing. Furthermore, the first transistor has a greater size than the second transistor. Therefore, a fast processing time in writing and a large conduction current in reading are catered for. In addition, the current mirror amplifies the conduction current in reading and increases the capacity for resisting the interference by adjacent bit cell.
Abstract:
A Pixel Circuit For Liquid Crystal Display Using Static Memory is disclosed, wherein a digital circuit is installed at a pixel of the liquid crystal display (LCD) for processing static image. The digital circuit works with an analog circuit for processing dynamic image. Several multiplexers and static memory are provided to enhance the digital and analog signal processing, for lowering the power consumption so as to accomplish power saving function of a Pixel Circuit For Liquid Crystal Display Using Static Memory.
Abstract:
Brightness control circuits and drivers and display devices using the same. In the brightness control circuit, a current digital-to-analog converter (DAC) receives a digital code and generates a control current, and an one-shot circuit is coupled to the current DAC to generate a pulse width modulated (PWM) signal according to the control current and a clock signal. The digital code and pulse width modulated signal have an exponential relationship.
Abstract:
A shift-register circuit. The shift-register circuit has a plurality of shift-register units connected in series. Each of the shift-register units generates first and second pulse signals, wherein the first pulse signal is an output signal of the shift-register circuit and the second pulse signal is a trigger signal of a subsequent shift-register unit. A LCD panel driving circuit using the shift-register circuit is also disclosed.
Abstract:
The present invention discloses an OLED driving device, including a first switch transistor, a first transistor, a second switch transistor, a storage capacitor and a second transistor. The first switch transistor is used to receive a data signal, and output the data signal by the control of a first scan signal. The first transistor is used to compensate the effect of the threshold voltage of the second transistor. The second switch transistor is used to receive a voltage signal, and output the voltage signal by the control of a second scan signal. The storage capacitor is used to store a data voltage. The second transistor is electrically connected to the second switch transistor through the storage capacitor. The present invention can efficiently release the charges from the storage capacitor, enhance display effect, and change the input voltage level for adapting different operating voltages of integrate circuits.
Abstract:
A memory device is provided. The device comprises a sense amplifier having a cell input terminal and a reference input terminal, a first sub-array coupled to the cell input terminal through a first switch and coupled to the reference input terminal through a second switch, a second sub-array coupled to the cell input terminal through a third switch and coupled to the reference input terminal through a fourth switch, and a reference cell array coupled between the second switch and the fourth switch and coupled to the reference input terminal.
Abstract:
A thin-film transistor (TFT) is described to have a gate layer, an insulating layer, a semiconductor layer, and a source/drain layer formed on a flexible substrate. The source and the drain layers are separated by a channel with a special shape. This does not only increase the aspect ratio of the channel per unit area, the source and the drain also have multiple directions for transmitting carriers. The carrier mobility of the TFT is thus enhanced with uniform and stable circuit properties.
Abstract:
Scan driver and driving system with low input voltage and their level shift circuit are disclosed. The scan driver includes a latch unit, a level shift circuit and a buffer. The latch unit generates a first control signal and a second control signal. The level shift circuit is connected to the latch unit to receive the first control signal, the second control signal, a first clock signal and a second clock signal, so as to output a scan signal with high voltage level. The buffer enhances driving ability of the scan signal for driving thin-film transistors (TFTs) of a display panel.
Abstract:
A shift register, a driving circuit and a display device using the same are disclosed. The shift register includes a 1st and a 2nd rectifying elements and 1st˜4th transistors. 1st source/drains of the 1st˜3rd transistors receive a common voltage respectively. The gates of the 1st and 3rd transistors and a 2nd source/drain of the 2nd transistor are coupled to a 2nd terminal of the 2nd rectifying element. The gates of the 2nd and 4th transistors and a 2nd source/drain of the 1st transistor are coupled to a 2nd terminal of the 1st rectifying element. A 1st source/drain of the 4th transistor is coupled to a 2nd source/drain of the 3rd transistor. The 1st terminals of the 1st and 2nd rectifying elements respectively receive input signals and a 1st clock signal. A 2nd source/drain of the 4th transistor receives a 2nd clock signal.