Lg Display Co., Ltd.

Lg Dislay Co., Ltd.

Sangho Yu

MunJun Lee

Dongkyoung Oh

Jihun Kim

Seungtae Kim

Woojin Nam

Bumsik Kim

Minkyu Chang

Joongsun Yoon

Jaedo Lee

MyungJin Pyeon

HyunSon Chon

Youngin Kim

Taegung Kim

Hyunwook Kim

Hyuckjun Kim

Hyungjung Kim

Kyoungdon Woo

Hanjin Bae

Hyemin Park

HyunKi Lee

Yirang Lim

Youngjun Hong

Munjun Lee

Youngjin Hong

A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.

Touch sensor integrated display device and method for driving the same

The present disclosure provides a rollable flexible display device. The rollable flexible display device including a display panel that displays an image and rolls or unrolls like a scroll, a sensing circuit that performs sensing to detect rolled and unrolled portions of the display panel and outputs sensed values, and a device adjusting part that adjusts the operating conditions of the display panel based on the sensed values sent from the sensing circuit.

Rollable flexible display device

A display device is disclosed. The display device includes a display panel including data lines, panel lines, scan lines, and pixels, a power circuit configured to output a reference voltage for initializing subpixels of the pixels, a plurality of branch lines configured to divide a path of the reference voltage into a plurality of paths, and a switch circuit configured to switch a path between the branch lines and the panel lines in response to a switch control signal. The switch circuit changes the path between the branch lines and the panel lines at intervals of predetermined time.

Display device including reference voltage supply

An organic light emitting display, a method for driving the same, and a method for manufacturing the same are discussed. The organic light emitting display according to an embodiment includes a panel including subpixels each having a compensation circuit including a reference voltage supply transistor, which receives a reference voltage and initializes a node of a gate electrode or a drain electrode of a driving transistor using the reference voltage, a scan driver supplying a scan signal to scan lines of the panel, a data driver supplying a data signal to data lines of the panel, a timing controller that controls the scan driver and the data driver, and a reference voltage compensation unit supplying the reference voltage including a reverse voltage opposite a ripple generated in the reference voltage to the subpixels and cancel the ripple.

Organic light emitting display, method for driving the same, and method for manufacturing the same

An organic light emitting display comprises: a display panel with a plurality of pixels connected to data lines and sensing lines, each pixel comprising an OLED and a driving TFT for controlling the amount of light emission of the OLED; and a data driver IC comprising a plurality of sensing units for sensing current data of the pixels through a plurality of sensing channels connected to the sensing lines, each sensing unit comprising: a first current integrator connected to an odd sensing channel; a second current integrator connected to an even sensing channel neighboring the odd sensing channel; and a sample & hold unit that removes common noise components from a first sampled value input from the first current integrator and a second sampled value input from the second current integrator while storing and holding the first and second sampled values.

Organic light emitting display for sensing electrical characteristics of driving element

An image quality compensation device for an organic light emitting display includes: a memory having first and second update blocks selectively storing first and second period compensation values, which are sequentially updated at regular intervals; and a timing controller that configures the first update block as either the current memory page for data loading or the next memory page for data writing and the second update block as the other one of the two, based on a preset check code, and updates the memory by calculating the second period compensation value with the passage of driving time based on the first period compensation value loaded from the update block configured as the current memory page, writing the second period compensation value to the update block configured as the next memory page, and then erasing the first period compensation value from the update block configured as the current memory page.

Image quality compensation device and method for organic light emitting display

An organic light emitting display and a method for driving the same are disclosed. The organic light emitting display includes a display panel, a data driver supplying a data signal to the display panel, a memory which is positioned inside or outside the data driver and includes at least two banks, and a sensing circuit unit which measures a threshold voltage of at least one driving transistor included in the display panel and provides compensation data. The data driver separately writes and reads previous compensation data and new compensation data provided by the sensing circuit unit in the at least two banks of the memory.

Organic light emitting display with threshold voltage compensation and method for driving the same

An organic light emitting display and method for driving the same are discussed. The organic light emitting display according to an embodiment includes a panel, drivers, and a short circuit detector. The short circuit detector forms a closed loop with a signal line, transmits input pulses through one end of the signal line and receives output pulses fed back through the other end of the signal line compares the input pulses and the output pulses.

Organic light emitting display and method for driving the same

An organic light emitting display device, can include a panel, a driving unit driving the panel, a timing controller controlling the driving unit, a power supply supplying power to the panel, a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected currents, and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.

Organic light emitting display device and driving method thereof

An organic light emitting display, a method for driving the same, and a method for manufacturing the same are discussed. The organic light emitting display according to an embodiment includes a panel including subpixels each having a compensation circuit including a reference voltage supply transistor, which receives a reference voltage and initializes a node of a gate electrode of a driving transistor using the reference voltage, a scan driver supplying a scan signal to scan lines of the panel, a data driver supplying a data signal to data lines of the panel, a timing controller controlling the scan driver and the data driver, and a reference voltage compensation unit which varies the reference voltage on each scan line and supplies the reference voltage to the subpixels.

The present invention has been made in an effort to provide an organic light emitting display device comprising a panel; a power supply supplying power to the panel; a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected current; and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.

A scan driver for an organic light emitting display includes logic circuitry to receive a plurality of start pulses and either a first clock or a second clock that is an inversion of the first clock and to generate one or more pulse signals as scan signals for driving the sub-pixels of the organic light emitting display panel, where one or more of the pulse signals are delayed by &#xbd; horizontal time from at least another one of the pulse signals.

Scan driver and organic light emitting display device using the same

An organic light emitting display device includes: a display panel including red, green, blue, and white (RGBW) subpixels; a first data conversion unit configured to convert red, green, and blue (RGB) data signals into RGBW data signals; an average picture level calculation unit configured to calculate an average picture level (APL) for the RGB data signals; a peak luminance controller configured to control luminance of at least one frame by using the APL and a look-up table; and a data compensation unit configured to perform a compensation operation on at least one of the RGB data signals in response to color coordinates of white (W) data signals among the RGBW data signals output from the first data conversion unit being different from a target value.

Organic light emitting diode display device and method of driving the same

A gamma reference voltage generation circuit and a flat panel display using the same are provided. The gamma reference voltage generation circuit includes R, G and B gamma reference voltage generators each having a plurality of digital-to-analog converters (DACs) that generate a plurality of R, G and B gamma reference voltages. In the DACs of each of the R, G and B gamma reference voltage generators, a high potential bias voltage input terminal of an uppermost DAC used to generate a gamma reference voltage of a maximum gray level is connected to a high potential voltage source. A high potential bias voltage input terminal of each of remaining DACs except the uppermost DAC is cascade-connected to an output terminal of an upper DAC next to each of the remaining DACs.

Growing community of inventors

Paju-si, South Korea

Sangho Yu