Abstract: A display panel includes gate lines formed on a substrate, storage electrode lines formed on the substrate and being parallel to the gate lines, data lines insulated from the gate lines and crossing the gate lines, a plurality of thin film transistors (TFTs) connected with the gate lines and the data lines, and pixel electrodes having a first sub-electrode connected with a TFT and a second sub-electrode formed at a side opposite the first sub-electrode with respect to a gate line, wherein the TFT and a storage electrode line are disposed between the first and second sub-electrodes.

Abstract: A thin film transistor (TFT) substrate that is capable of providing a wide viewing angle and high contrast ratio without a decrease is aperture ratio is presented. The TFT substrate may be, for example, used with a patterned vertical alignment (PVA) mode LCD. The TFT substrate includes gate lines and data lines extending in non-parallel directions and a pixel electrode formed in a pixel region. The pixel region has two transmission regions separated from each other by a reflection region, and at least one of the gate lines is formed in the reflection region. A storage capacitor may also be formed in the reflection region. This configuration avoids the use of a bridge region between the two transmission regions that is responsible for aperture ratio decrease in the conventional configuration.

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 display apparatus includes a display panel, a driving part, a gate driving part and a gate selecting part. The display panel has source lines and gate lines intersecting the source lines. The driving part converts original data signals received through an interlaced scan method into analog-type data voltages and outputs the data voltages to the source lines. The gate driving part sequentially outputs gate signals. The gate selecting part selectively outputs the gate signals to odd-numbered gate lines and even-numbered gate lines corresponding to the data voltages output to the source lines.

Abstract: A liquid crystal display (LCD) apparatus and method for automatically sensing and compensating a delay time of a gate signal fed to the LCD display panel. The LCD panel includes a signal converter for generating a power clock signal, a delay controller for generating a delay control signal corresponding to the delay value of the gate signal by comparing the power clock signal with a signal derived from the data lines, and a pixel voltage signal generator for supplying a pixel voltage signal to the data lines of the LCD panel in response to the delay control signal.

Abstract: A liquid crystal display having a plurality of pixels and blocks of shift registers that are connected to one another for temporarily storing data signals and from which the data signal outputs are sequentially applied to drive the pixels. Each of the shift registers receives a shift start signal and at least one of first and second clock signals, of which phases are opposite to each other, and a high period of the shift start signal corresponds to two cycles of the respective clock signals so that each pixel is pre-charged from the data signal from previous block of registers before receiving the data signal for the current block thereby preventing a boundary between blocks from being visually recognized.

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 thin film transistor substrate having a semiconductor layer including a low concentration region and a source region/drain region adjacent to the low concentration region at both sides of a channel region made of polysilicon; a gate insulating layer and a conductive layer on the substrate the conductive layer patterned to form a gate electrode.

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 single input level shifter, which performs a stable level-shifting operation without increasing its area when used with a thin film transistor (“TFT”) having a variety of different characteristics, and includes an intermediate voltage signal providing unit for providing an intermediate voltage signal having a voltage between a supply voltage and an input signal voltage, an inverting unit for receiving the intermediate voltage signal and providing an inverted intermediate voltage signal, and a voltage signal comparing unit for comparing the intermediate voltage signal with the inverted intermediate voltage signal and providing the supply voltage or the ground voltage according to the comparison. A TFT liquid crystal display (“LCD”) device employs the single input level shifter.

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: An LCD display device in which the gate lines are controlled by a gate circuit part that outputs gate signals to the gate lines. A first signal wiring is formed adjacent to the gate circuit part and transmits a starting signal, which initiates an operation of the gate circuit part, to the gate circuit part. A second signal wiring is formed at a side of the first signal wiring and transmits a control signal, which controls an output of the gate circuit part, to the gate circuit part. A first connection wiring is electrically connected between the gate circuit part and the second signal wiring. The first connection wiring is intersected with the first signal wiring. Therefore, a resistance of the wiring is increased to protect the gate circuit from static electricity.

Abstract: An amplifier includes a biasing section, first and second differential amplifying sections and an output section. The biasing section outputs first and second bias currents based on first and second power source voltages. The first differential amplifying section outputs a first amplified voltage based on the first bias current. The second differential amplifying section outputs a second amplified voltage based on the second bias current. The output section outputs the second power source voltage based on the first amplified voltage and the first power source voltage, and outputs the first power source voltage based on the second amplified voltage and the second power source voltage. Therefore, a variation of the threshold voltage is compensated to enhance display quality.

Abstract: A method of fabricating poly crystalline silicon type thin film transistor is disclosed. In the method, before the step of re-crystallization of amorphous silicon to form polycrystalline silicon active pattern, a step for injecting predetermined amount of oxygen atom into the surface part of the amorphous silicon layer. By this addition of step, the surface part of the silicon layer is to be oxidized and the crystal defect in the interface between the gate insulating layer and poly crystalline silicon layer can be cured and the mobility of charge carrier can be improved in the channel of the thin film transistor.

Abstract: Provided are a circuit board and a display device having the circuit board. The circuit board includes a first surface opposite to a second surface and a first and a second wire disposed on the first surface. The circuit board is attached substantially to one side of the display panel unit.

Abstract: An amplifier includes a biasing section, first and second differential amplifying sections and an output section. The biasing section outputs first and second bias currents based on first and second power source voltages. The first differential amplifying section outputs a first amplified voltage based on the first bias current. The second differential amplifying section outputs a second amplified voltage based on the second bias current. The output section outputs the second power source voltage based on the first amplified voltage and the first power source voltage, and outputs the first power source voltage based on the second amplified voltage and the second power source voltage. Therefore, a variation of the threshold voltage is compensated to enhance display quality.

Abstract: A thin film transistor array panel is provided. The array panel includes a storage capacitance that is substantially uniform, and allows for a relatively large capacitance in a relatively small area.

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.