Abstract: A driving method and a transreflective display apparatus are provided herein. In the driving method, a plurality of voltage-to-transparency curves are provided. An ambient light intensity of the display apparatus is detected for determining a display mode, wherein the display mode is either a transmissive mode or a reflective mode. Next, one of the voltage-to-transparency curves is selected according to the display mode and the ambient light intensity for driving the display apparatus. Therefore, by referring a proper voltage-to-transparency curve to drive the display apparatus, the display quality of the display apparatus can be enhanced.

Abstract: A level shifter is disclosed and includes at least four Type 1 transistors and at least four Type 2 transistors. The sources of several Type 1 transistors are electrically connected to a first voltage terminal while the sources of several Type 2 transistors are connected to a second voltage terminal. The level shifter receive an input signal and outputs a logically equivalent output signal with higher voltage, wherein the voltage of the output signal is between the voltages of the first voltage terminal and the second voltage terminal.

Abstract: An image driver includes an adjustment signal module, a multiplexer, and a conversion module. The adjustment module generates at least a first adjustment signal and a second adjustment signal. The multiplexer is connected to the adjustment signal module and selectively outputs one of the adjustment signals. The conversion module includes a plurality of conversion units, wherein each of the conversion units receives the selected adjustment signal and generates a driving signal based on the adjustment signal received.

Abstract: 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.

Abstract: An identifier for identifying a source driver of a chip-on-glass liquid crystal display and an identifying method thereof are provided. The identifier includes a comparator for receiving a chip identity and a target identity, and generates a triggering signal to activate the source driver if the chip identity coincides with the target identity.

Abstract: Touch panels comprising a bias line biased at a bias voltage, a select line, a readout line, a photo cell and a readout circuit. The photo cell comprises a first photo switch, a second photo switch and a storage capacitor. The first photo switch and the storage capacitor is coupled in series between the readout line and the bias line, and the first photo switch is further controlled by the select line. The second photo switch is connected between the readout line and the bias line. The readout circuit and the select line are managed by a reset mode, an exposure mode and a readout mode. The voltage variation of output terminal of the readout circuit is used in obtaining the state of the photo cell.

Abstract: A display implemented with a unique circuit arrangement. The display includes a glass substrate, a plurality of serial-connected source drivers and at least one gate driver. The source drivers and the at least one gate driver are disposed on the glass substrate using, for example, chip-on-glass technology. The display further includes at least one flexible connector, such as a flexible printed circuit board. Each of the at least one flexible connector corresponds to a selected one of the source drivers. The selected one of the source drivers is configured to receive image data and control information from the corresponded flexible connector, and convey the image data and the control information to at least one neighboring source driver.

Abstract: 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.

Abstract: An output buffer and a controlling method are disclosed. The output buffer comprises an upper buffer and a lower buffer. In the controlling method, at first, a first voltage (V1) and a second voltage (V2) are applied on the upper buffer, and a third voltage (V3) and a fourth voltage (V4) are applied on the lower buffer, wherein V1>V2, V1>V4, V3>V2, and V3>V4. Then, the upper buffer is operated to output data to a plurality of pixels thereby operating the liquid crystals of the pixels over an upper supply range, wherein the upper supply range is from V1 to V2. Thereafter, the lower buffer is operated to output data to the pixels thereby operating the liquid crystals of the pixels over a lower supply range, wherein the lower supply range is from V3 to V4.

Abstract: A display device is provided, including a panel, source driver chips, a gate driver chip, a printed circuit board and transmission lines. The panel includes light emitting elements and display cells. The display cells are respectively connected to data lines and gate lines. The source driver chips output pixel signals to the data lines. At least one source driver chip includes a timing controller integrated therein for generating timing control signals and the pixel signals according to an image control signal provided by a host. The gate driver chip outputs corresponding scan signals to the gate lines. The transmission lines are routed on the printed circuit board and connect to the source driver chips.

Abstract: The present invention provides a liquid crystal display comprising a display panel, a plurality of gate drivers sequentially enabling rows of pixels of the display panel, a plurality of source drivers outputting a plurality of driving signals to the enabled row of the pixels of the display panel, and a timing controller outputting each of a plurality of start pulses to all the source drivers and sequentially enabling the source drivers so that each source driver respectively receives one of the start pulses, wherein each of the source drivers latch a plurality of image signals when receiving one of the start pulses.

Abstract: A driver unit comprises a latch circuit for holding digital image data in a voltage state, a digital-to-analog converter, and a voltage compensator circuit for raising the analog display voltage. The digital-to-analog converter can access content of the digital image data from the voltage state in the latch circuit, and convert the digital image data into analog display signals. In other embodiments, a method of driving a liquid crystal display comprises storing digital image data in a latch circuit under a voltage state, accessing a content of the digital image data from the voltage state held in the latch circuit, selecting a reference voltage according to the content of the digital image data for converting the digital image data into analog display signals, and raising the analog display voltage for obtaining a driving voltage.

Abstract: A source driver, an operation method thereof, and a flat panel display using the same are provided. The source driver includes a data channel, a switch and a switch controller. The data channel latches a pixel data according to timing of a line letch signal, and converts the latched pixel data to a driving signal for driving a display panel. The data channel decides a polarity of the driving signal according to a polarity signal. A first end of the switch is coupled to the data channel to receive the driving signal. The switch controller adjusts a pulse width of the line letch signal to obtain a control signal for controlling the switch according to the polarity signal. A pulse width of a first pulse is smaller than that of a second pulse in the control signal after the polarity signal is changed.

Abstract: An optical sensor is disclosed. Each sensor pixel circuit of the optical sensor includes a first readout TFT for reading out voltage of a charge node, a second readout TFT for controllably resetting the charge node to a first reset voltage, and a photo TFT for discharging the voltage at the charge node to a second reset voltage in absence of an object(s).

Abstract: 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.

Abstract: A source driver includes a driver unit and a data analysis unit. The driver unit drives a display panel according to a video signal. The data analysis unit, which is coupled to the driver unit, analyzes gray level distribution of the video signal, and the data analysis unit enables or disables a charge sharing function of the driver unit according to an analysis result. As a result, the charge sharing function is enabled optionally during different charge sharing periods, and thus the power consumption in the source driver and the operation temperature of the source driver could be reduced as compared with the prior art.

Abstract: 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.

Abstract: A source driver and a compensation method for an offset voltage of an output buffer are provided. The source driver includes a storage element, an output buffer, a sampling unit and a first switch. The output buffer has a first input terminal coupled to the storage element and a second input terminal coupled to an output terminal thereof. The output buffer enhances an input signal of the first input terminal and thereby outputs an output signal via the output terminal. The sampling unit respectively transmits a pixel signal and the output signal to the first input terminal of the output buffer and the storage element during a first sub-period for storing an offset voltage of the output buffer in the storage element. The first switch transmits the pixel signal to the storage during a second sub-period for compensating the pixel signal with the offset voltage stored in the storage element.

Abstract: A source driver adapted to drive a display panel is provided herein. The source driver includes a first output buffer, a detection module and a conversion module. The first output buffer enhances a first pixel signal and thereby outputs a first enhanced pixel signal. The detection module detects a rise time of the first enhanced pixel signal. The conversion module adjusts a driving capability of the first output buffer in response to the rise time for adjusting a slew rate of the first output buffer. Therefore, the first output buffer in the source driver can dynamically and automatically adjusts the slew rate of the first output buffer through a feedback mechanism composed of the detection module and the conversion module.

Abstract: 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.