Samsung Display Co., Ltd.

Mitsuru Fujii

Ju Gon Seok

Ji Ye Moon

Hoo Hyeon Lee

Jin-Woo Park

Chul-Woo Park

In Soo Wang

Shawn Kim

Moon-Chul Park

Sam-Ho Ihm

A display device and a driving method thereof are disclosed. The display device includes a display panel including a plurality of pixels connected to data lines; a data driver connected to the data lines and configured to determine first data voltages corresponding to the pixels, to generate second data voltages by adding a compensation voltage to the first data voltages, and to supply the second data voltages to the pixels through the data lines; and a crosstalk compensator connected to the data driver and configured to calculate the compensation voltage by comparing the first data voltages corresponding to pixels disposed in at least three adjacent horizontal lines.

Display device and driving method thereof

A display device includes: a data driver for providing data voltages to data output lines; a data divider for coupling the data output lines to data lines; and a data compensator for compensating data voltages based on a load difference between data voltages in adjacent pixel rows.

Display device including data divider

A display including first to n-th pixels electrically connected with a first data line, and a data compensator for generating a reference voltage of a k-th pixel (k being between 1 and n) based on a first coupling voltage between the k-th pixel and the first data line and a second coupling voltage between the k-th pixel and a second data line, and comparing an average voltage generated based on a reference voltage of at least one of the first to n-th pixels with the reference voltage of the k-th pixel to generate a compensation signal, wherein the reference voltage of at least one of the first to n-th pixels is based on a coupling voltage between the at least one of the first to n-th pixels and the first data line and based on a coupling voltage between the pixels and the second data line.

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

A display device is provided including a display unit including a plurality of color pixels; a scan driver that sequentially applies a gate-on voltage scan signal to a plurality of scan lines that are connected to the color pixels; a demux unit that is connected to a plurality of color data lines that are connected to the color pixels, and that sequentially selects the plurality color data lines at a predetermined time interval; and a data driver that applies a data signal to each of the plurality of color data lines that are sequentially selected in the demux unit, and that applies a previous data signal to at least one of the plurality of color data lines during the predetermined time interval, wherein the previous data signal has a same voltage as a voltage applied to one of the plurality of color data lines before the predetermined time interval.

Display device and method of driving the same

A data compensation device includes a current calculator which calculates an average current of each of blocks included in a pixel array based on an input data, a data enable signal, a horizontal synchronization signal and a vertical synchronization signal, a voltage drop info provider which provides a bus voltage drop information of predetermined bus points and an array voltage drop information of predetermined array points, the bus points being included in a power supply bus wiring which is connected to the pixel array, the array points being included in the pixel array, a data compensation circuit configured to provide a compensation data corresponding to the input data based on the average current, the bus voltage drop information and the array voltage drop information, and an adder configured to provide a compensation result data by adding the input data and the compensation data.

Data compensation device compensating data based on average current, bus voltage drop information, and array voltage drop information and display device including the same

A data compensator includes a reference voltage drop generator, a voltage drop measurer, a compensation data generator, and an output block. The reference voltage drop generator generates reference voltage drops for color image data. The voltage drop measurer calculates pixel voltage drops based on color image data. The compensation data generator generates different color compensation data to compensate luminance and color coordinate distortion.

Data compensator to mitigate luminance distortion of display device

Display device and method of driving the same are provided. According to an embodiment of the present invention, a display device includes a display unit which includes a plurality of pixels, and a control unit which adjusts luminance by maintaining the same gamma gray voltage during a plurality of frames and changing a dimming gain ratio of input data in each frame if a luminance level changes during the frames.

A data compensation circuit and OLED display including the same are disclosed. In one aspect, the circuit compensates a voltage drop of a power voltage applied to a display panel of the display. The circuit includes an average current calculator configured to calculate an average current value of each of M&#xd7;N pixel blocks. The circuit also includes a voltage drop calculator configured to calculate one or more pixel block voltage drops of the power voltage of each of the selected target pixel blocks based at least in part on an X-axis voltage drop and a Y-axis voltage drop of each of target pixel block. The circuit further includes an interpolator configured to interpolate the pixel block voltage drops of adjacent target pixel blocks so as to calculate a pixel voltage drop of a target pixel selected among one of the target pixel blocks.

Data compensation circuit and organic light-emitting diode display having the same

A driving method for an image display device including sub-pixels arranged in rows and columns, the driving method including: receiving first data corresponding to one frame; dividing the one frame into fields; generating second data from the first data for each of the fields; and supplying the second data to the sub-pixels. Where, the second data is generated by selectively inserting black data in portions of the first data.

Image display device and driving method with selective black data insertion

A liquid crystal display (LCD) and method for driving the LCD using one or more polarity inversion methods is provided. In one embodiment, the invention relates to a method of driving an LCD comprising a liquid crystal panel partitioned by a plurality of gate lines and data lines and including a plurality of liquid crystal cells arranged in a matrix and auxiliary lines adjacent to and parallel to the gate lines, the auxiliary lines coupled with the plurality of liquid crystal cells, the method including supplying an auxiliary voltage that increases from a low level to a high level on a first pair of auxiliary lines adjacent to each other for a jth frame period, supplying an auxiliary voltage that decreases from a high level to a low level on a second pair of auxiliary lines adjacent to each other for the jth frame period, supplying the auxiliary voltages at levels opposite to the levels of the jth frame period on the first and second pairs of auxiliary lines in a (j+1)th frame period.

Growing community of inventors

Asan-si, South Korea

Mitsuru Fujii