Abstract: In a light sensor test unit, a test circuit is built in a display panel and connected to an output node of a light sensor which senses an intensity of an external light. When external light having a predetermined intensity is provided to the light sensor, the test circuit outputs a driving signal in response to a sensing signal output from the output node. A test pixel part includes pixels selected from a plurality of pixels arranged in the display panel and receives the driving signal from the test circuit to display a gray-scale corresponding to the driving signal. A brightness measurer measures a brightness corresponding to the gray-scale displayed in the test pixel part to compare the measured brightness with a predetermined brightness, thereby testing whether the light sensor built in the display panel is normally operated.

Abstract: The first shift register applies (4n?3)-th and (4n?2)-th gate signals to (4n?3)-th and (4n?2)-th gate lines, respectively, in response to a first clock signal, a second clock signal having a delayed phase by 1H time with respect to the first clock signal, and a third clock signal having opposite phase to the first clock signal. The second shift register applies (4n?1)-th and 4n-th gate signals to (4n?1)-th and 4n-th gate lines, respectively, in response to the first clock signal, the third clock signal, and a fourth clock signal having opposite phase to the second clock signal. Therefore, a number of transistors in the first and second shift registers may be reduced.

Abstract: A liquid crystal display (LCD) and a driving method of the same. The LCD includes a liquid crystal capacitor charged with a data voltage during a first turn-on period of a first gate signal, a storage capacitor having one electrode connected to the liquid crystal capacitor and a driving unit which supplies a boost voltage to the other electrode of the storage capacitor during a boost voltage-output period of a boost-control signal. The boost voltage has a first edge and a second edge, the first and second edges occur in the boost voltage-output period, and the first turn-on period occurs between the first and second edges.

Abstract: A shift register includes a plurality of stages each generating an output signal in sequence and including a buffering section, a driving section, a first charging section, and a charging control section. The buffering section receives one of a scan start signal and an output signal of a previous stage so that the driving section generates the output signal of a present stage. The first charging section includes a first terminal electrically connected to the driving section and a second terminal electrically connected to a first source voltage. The charging control section applies the output signal of a next stage to the first charging section. Therefore, a gradual failure of TFT is reduced.

Abstract: A liquid crystal display apparatus comprising a liquid crystal display panel and a touch panel is disclosed. A first transparent electrode is disposed on an upper surface of the liquid crystal display panel for displaying an image. A second transparent electrode is disposed on a lower surface of a retardation member and the second transparent electrode is opposite to the first transparent electrode. Accordingly, the entire thickness of the liquid crystal display apparatus may be decreased, and the manufacturing cost of the liquid crystal display apparatus may be reduced.

Abstract: A liquid crystal display apparatus (100) comprising a liquid crystal display panel (2009 and a touch panel (300) is disclosed. A first transparent electrode (350) is disposed on an upper surface of the liquid crystal display panel (200) for displaying an image. A second transparent electrode (360) is disposed on a lower surface of a retardation member (320) and the second transparent electrode (360) is opposite to the first transparent electrode (350). Accordingly, the entire thickness of the liquid crystal display apparatus may be decreased, and the manufacturing cost of the liquid crystal display apparatus may be reduced.

Abstract: A liquid crystal display includes: a plurality of gate lines which transmits gate signals having a gate-on voltage and a gate-off voltage; a plurality of data lines which transmits data voltages; a plurality of storage electrode lines which transmits storage signals; a plurality of pixels, wherein each pixel of the plurality of pixels includes a liquid crystal capacitor connected to a switching element and a common voltage, and a storage capacitor connected to the switching element and a storage electrode line of the plurality of storage electrode lines; a gate driver which generates the gate signals; and a plurality of signal generating circuits which generates the storage signals based on at least one control signal and at least one gate signal. The storage signal applied to each pixel has a voltage level which changes after a charging of the data voltage into the liquid crystal capacitor and the storage capacitor.

Abstract: In a display apparatus and a method for driving the display apparatus, the display apparatus includes a display panel and a gate driving part. The display panel has a gate line, and a gate driving part has a plurality of stages and a plurality of signal lines. At least one of the stages includes a transferring stage sequentially driving the stage, and an output stage partially driving the gate line, in response to a signal outputted from the transferring stage and a driving area selection signal. Accordingly, the display apparatus is partially driven, so that current consumption may be decreased, the display apparatus may be more safely driven, and a position, a size and the number of a non-display area may be more easily controlled.

Abstract: Disclosed is a display device, including: a display substrate which comprises a gate line and a data line and a gate driving unit which is coupled to the gate line of the display substrate and outputs a gate signal. The gate driving unit is comprised of a shift register that includes a plurality of stages. At least one of the stages comprises a first drive controller that generates a first control signal by a carry signal applied from a previous stage, a second drive controller that generates a second control signal by a reset signal applied from a subsequent stage, a first drive unit that outputs the reset signal and the carry signal to the previous stage and the following stage, respectively by the first control signal and the second signal, and a second drive unit that outputs the gate signal to the gate line by the first control signal and the second signal.

Abstract: A liquid crystal display apparatus is disclosed. A first transparent electrode is disposed on an upper surface of the liquid crystal display panel for displaying an image. A second transparent electrode is disposed on a lower surface of a polarizer, and the second transparent electrode is opposite to the first transparent electrode. Accordingly, the entire thickness of the liquid crystal display apparatus may be decreased, and the manufacturing cost of the liquid crystal display apparatus may be reduced.

Abstract: A liquid crystal display and a driving method thereof are disclosed. The liquid crystal display includes a plurality of pixels arranged in a matrix, each pixel including a liquid crystal capacitor and a storage capacitor having a first terminal connected to the liquid crystal capacitor and a second terminal applied with a storage electrode voltage. The storage electrode voltage has a first level and a second level that are periodically changed and the first level is higher than the second level, and the storage electrode voltage is dropped by a predetermined compensation value ?V at the time of change from the first level to the second level and raised by the compensation value ?V at the time of change from the second level to the first level.

Abstract: A shift register includes a plurality of stages connected to one another, wherein each of the plurality of stages receives a first driving voltage as an input and transmits the first driving voltage using an output signal of a previous stage according to a first scan start signal or a first driving order to control an output of a clock signal or an inverted clock signal, and wherein the first driving voltage is at a high state for a partial time of one frame and at a low state for the remaining time of the frame at the first driving order. By using the method, a partial driving can be performed, and accordingly power consumption of the shift register can be reduced.

Abstract: A shift register includes a plurality of stages each generating an output signal in sequence and including a buffering section, a driving section, a first charging section, and a charging control section. The buffering section receives one of a scan start signal and an output signal of a previous stage so that the driving section generates the output signal of a present stage. The first charging section includes a first terminal electrically connected to the driving section and a second terminal electrically connected to a first source voltage. The charging control section applies the output signal of a next stage to the first charging section. Therefore, a gradual failure of TFT is reduced.

Abstract: A touch screen device, a method of eliminating a noise thereof and a liquid crystal display having the same include converting an analog signal inputted from a plurality of sensors of a touch screen into digital raw data, aligning the digital raw data on a frame basis, eliminating an offset noise from the digital raw data aligned on a frame basis, and identifying a sensor signal within the digital raw data by comparing a variation of the digital raw data in a previous frame to a variation of the digital raw data in a current frame.

Abstract: In a light sensing element having simplified structure, an array substrate having the light sensing element and an LCD apparatus having the light sensing element, the light sensing element includes a first electrode, a control electrode and a second electrode. An alternating bias voltage is applied to the first electrode. An off voltage is applied to the control electrode. The second electrode outputs a light-induced leakage current based on an externally provided light and the bias voltage. Therefore, the array substrate includes one light sensing switching element corresponding to one pixel so that structure of the array substrate is simplified and opening ratio is increased.

Abstract: A liquid crystal display includes a first display panel, a second display panel, a liquid crystal layer, a plurality of sensing data lines formed on the second display panel, a plurality of variable capacitors connected to the sensing data lines and a first voltage of which capacitance is changed depending on pressure, a plurality of reference capacitors connected to the sensing data lines and a second voltage, and a plurality of output units connected to the sensing data lines which generate sensing signals on the basis of sensing data signals that flow through the sensing data lines. The magnitude of the first voltage has a first level and a second level that is different from the first level, and the magnitude of the second voltage is constant. A time period for maintaining the first voltage at the second level in a interval for reading the sensing signal is at least 1H, and the sensing signal is generated while maintaining the first voltage at the second level.

Abstract: The present invention relates to a liquid crystal display (“LCD”) that includes a liquid crystal panel assembly including sensing data lines, variable capacitors having a capacitance changed by pressure and connected to the sensing data lines, and reference capacitors connected to the sensing data lines, and a plurality of sensing signal output parts formed separately from the liquid crystal panel assembly and respectively connected to the sensing data lines to generate an output signal based on a sensing data signal flowing through the sensing data lines. Each of the sensing signal output parts includes an output transistor connected to each of the sensing data lines, while the output transistor includes a metal oxide semiconductor (“MOS”) transistor that has better performance, smaller size, and lower power consumption than a thin film transistor (“TFT”).

Abstract: A shift register includes a plurality of stages each generating an output signal in sequence and including a buffering section, a driving section, a first charging section, and a charging control section. The buffering section receives one of a scan start signal and an output signal of a previous stage so that the driving section generates the output signal of a present stage. The first charging section includes a first terminal electrically connected to the driving section and a second terminal electrically connected to a first source voltage. The charging control section applies the output signal of a next stage to the first charging section. Therefore, a gradual failure of TFT is reduced.

Abstract: A display device having a sensing unit includes a first substrate having a plurality of test spacers, and a second substrate having a plurality of sensing unit test lines facing the test spacers, respectively. The surface heights of the sensing unit test lines are different from each other. The heights of the test spacers are substantially the same. The second substrate further includes a plurality of height difference portions formed under the sensing unit test lines, and the number of height difference portions formed under the sensing unit test lines is different for different sensing unit test lines.

Abstract: A method of economically manufacturing display devices having a matrix of drivable pixels arranged in rows and columns arranged to be driven by IC drivers, including the steps of including a plurality of sensor signal lines in the display device that are selectively connectable to certain of the pixel rows, a plurality of sensor signal lines selectively connectable to certain of the pixel columns, transmitting test signals to test predetermined ones of the rows and columns of pixels, and connecting pixel driving circuits to those display devices exhibiting uniform pixel brightness in response to the test signals.