Abstract: A liquid crystal display (“LCD”) device includes an LCD panel and a driving module. The LCD panel includes a plurality of pixel parts, each including a transmitting portion and a reflecting portion. The transmitting portion has a first switching element electrically connected to a first gate line, and a first liquid crystal capacitor electrically connected to the first switching element. The reflecting portion has a second switching element electrically connected to a second gate line, and a second liquid crystal capacitor electrically connected to the second switching element. The driving module applies a first common voltage to the first liquid crystal capacitor during turning-on of the first switching element, and applies a second common voltage to the second liquid crystal capacitor during turning-on of the second switching element. Therefore, an image display quality is improved.

Abstract: A level shifter and a display device having the same are provided. In a level shifter, a first transistor includes a gate electrode receiving a first driving voltage, and a source electrode receiving an input signal through an input terminal. A second transistor includes a drain electrode receiving the first driving voltage, and a source electrode electrically connected to a drain electrode of the first transistor through a first node. A third transistor includes a source electrode receiving a second driving voltage, a drain electrode electrically connected to a gate electrode of the second transistor through a second node, and a gate electrode receiving the input signal. A fourth transistor includes a drain electrode receiving the first driving voltage, a gate electrode electrically connected to the drain electrode of the first transistor through the first node, and a source electrode electrically connected to the drain electrode of the third transistor through the second node.

Abstract: A driving apparatus for a display device includes a signal controller synthesizing first and second signals, respectively, having first and second signal levels to output a synthesized signal having third to fifth signal levels, a signal extracting unit extracting the first and second control signals from the synthesized signal, a gate driver generating gate signals based on the first control signal, and a data driver generating data signals based on the second control signal.

Abstract: A display apparatus is implemented using an SOG or SOP technology that can integrate a plurality of circuit elements on a single substrate. The display apparatus does not include a separate frame memory. Instead of the separate frame memory, the display apparatus uses a predetermined region of a memory provided in a host by allocating it as a frame memory region. Since an image signal transmitted/received between the display apparatus and the host has a coded format, a chip size of the display apparatus and an information processing system with the same is reduced and an amount of transmission data is also reduced.

Abstract: There are provided a TFT, a TFT substrate using the TFT, a method of fabricating the TFT substrate, and an LCD. The TFT includes a source region, a drain region, and a gate electrode having an opening. The opening of the gate electrode is to enhance the light sensing ability of the TFT when it is used as a light sensor, since light is incident into a region where the opening is formed. The TFT including the gate having the opening can be used in a substrate of a flat display or an LCD using such a substrate. The above TFT can sense light incident from outside the display to adjust the brightness of the screen according to the external illumination.

Abstract: An LCD device includes an LCD panel, a source driving part, an operating part, a mean voltage generating part, and a pre-charging part. The LCD panel includes a switching element and a liquid crystal capacitor. The switching element is formed in a region defined by gate and source lines adjacent to each other. The liquid crystal capacitor is electrically connected to the switching element. The source driving part converts data signals into data voltages of analog type. The operating part determines a mean data signal of the data signals. The mean voltage generating part converts the mean data signal into a mean data voltage of analog type. The pre-charging part selectively applies the data voltages and the mean data voltage to the source lines, thereby improving an image display quality of the LCD device.

Abstract: A display device includes a plurality of pixels, wherein each pixel includes: a light emitting element; a first capacitor connected between a first node and a second node; a driving transistor having an input terminal, an output terminal, and a control terminal connected to the second node where the driving transistor supplies a driving current to the light emitting element to emit light; a first switching unit supplying a first reference voltage to the driving transistor according to a first scanning signal and connecting the first node to a data voltage or the driving transistor; and a second switching unit supplying a driving voltage to the driving transistor according to a second scanning signal and connecting the first node to the data voltage. Accordingly, variations in threshold voltage of the driving transistor can be compensated for so that it is possible to display a uniform image.

Abstract: A display device includes a plurality of data lines, a transmission gate element connected to the data lines, wherein the transmission gate supplies precharge voltages and data voltages to the data lines in response to transmission gate signals, and a plurality of pixels connected to the data lines.

Abstract: A level shifter includes: a voltage dividing unit receiving a first voltage and an input voltage, and generating a middle voltage between the first voltage and the input voltage; first and second voltage compensating units connected to the voltage dividing unit and connected between the first voltage and a second voltage, for compensating a voltage variation of the voltage dividing unit; and an output unit receiving an output from the voltage dividing unit and generating an output voltage.

Abstract: A display device includes a PCB, a driver chip and a display panel. The driver chip is mounted on an FPCB that is electrically coupled to the PCB and to the display panel. The driver chip includes a first circuit operating at a relatively low voltage and a relatively high frequency. The display panel includes an array of pixels and a second circuit for driving the pixels. The second circuit operates at a relatively high voltage and a relatively low frequency. Therefore, the manufacturing efficiency of a driver chip IC may be increased.

Abstract: A display device includes a circuit board provided with signal lines, a first and a second panel unit separately attached to the circuit board and each provided with pixels comprising switching elements, and a driving circuit chip mounted on the circuit board and driving the first and the second panel units.

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a line selection circuit. The display panel including a plurality of gate lines, and a plurality of data lines divided into a plurality of blocks. The gate driver outputs a scan signal that activates the gate lines in sequence. The data driver applies a data signal to the data lines by a unit of blocks during an active period which corresponds to a time when one of the gate lines is activated such that a polarity of data signals of i-th active period is opposite to a polarity of data signals of (i+2)-th period, wherein ‘i’ is a natural number. The line selection circuit differentiates timing for selecting the blocks per the gate lines and applies the data signal to the blocks of the data lines. Therefore, display is enhanced.