Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Ik-Hyun Ahn

Bong-Im Park

Yoon-gu Kim

Jae-Hyoung Park

Seon-Ki Kim

Se-Huhn Hur

Woo-Joo Lee

Jin-young Lee

Jun-Pyo Lee

Ah-Reum Kim

Kang-Min Kim

Hyun-sik Hwang

Jong-Hyon Park

Jung-Deok Seo

A timing controller includes a count control circuit, a pulse width detector, and a pulse generator. The count control circuit receives an external enable signal. Pulses of the external enable signal include an effective and a blank period of image data. The count control circuit counts pulse widths of each of the pulses. The pulse width detector receives the counted pulse widths, compares a pulse width of a present pulse with pulse widths of previous pulses, and detects a pulse width of a previous pulse that has a pulse width smaller than the pulse width of the present pulse. The pulse generator generates three output pulses having pulse widths that are one-third a period of the detected previous pulse. The pulse generator outputs the first, second and third pulses as an internal enable signal.

Timing controller, display apparatus having the same and signal processing method thereof

An adaptive black clipping circuit in a display device includes a data corrector, a register, a pattern detector and a clipping selector. The data corrects input image data to generate corrected image data such that the corrected image data is equal to or greater than a black clipping value where the black clipping value corresponds to the input image data having a grayscale value of zero and the black clipping value is greater than zero. The register stores and provides configuration data. The pattern detector generates a pattern detection signal based on the input image data corresponding to a plurality of rows. The clipping selector selects one of the corrected image data and the configuration data in response to the pattern detection signal to provide output image data.

Adaptive black clipping circuit, display device including the same and adaptive black clipping method

A display panel driving apparatus includes a data processing circuit, a data driver, and a gate driver. The data processing circuit increases a first gamma value of input image data of which the gamma value is 0, according to a second gamma value of the input image data of which the second gamma value is not 0. The data driving part outputs a data signal based on the output image data to a data line. The gate driving part outputs a gate signal to a gate line.

Display panel driving apparatus for increasing gamma value of image data, method of driving display panel using the same and display apparatus having the same

A method of driving a display device including a display panel is provided. The display panel includes a plurality of gate lines. The gate lines are divided into a plurality of gate line groups. The method includes applying different gate delay values to each of the gate line groups to generate gate signals and outputting the gate signals to the gate lines. A first gate delay value is applied to at least one of the gate lines during a first frame and a second gate delay value different from the first delay value is applied to the at least one of the gate lines during a second frame.

Method of driving a display panel and a display apparatus for performing the same

A display apparatus includes a timing controller and a display panel. The timing controller generates first and second image data based on input image data and generates output image data based on the first and second image data. The first image data corresponds to a boundary region in a first image. The second image data corresponds to a non-boundary region in the first image. The display panel includes a plurality of pixels and displays the first image based on the output image data. The plurality of pixels include boundary pixels corresponding to the boundary region and non-boundary pixels corresponding to the non-boundary region. The boundary pixels operate based on a reference gamma curve. The non-boundary pixels operate based on first and second gamma curves different from the reference gamma curve.

Display apparatus and a method of operating the same

A method of driving a display device includes a preliminary frame charging step and a main frame charging step. The method comprises a preliminary frame charging step of simultaneously charging liquid crystal cells in a pixel line group having a selected pixel row and a unselected pixel row with pixel data of the selected pixel row of the pixel line group and a main frame charging step of charging liquid crystal cells in the unselected pixel line group with pixel data of the unselected pixel line group.

Method of driving a display device

A data driver includes a digital-to-analog converter, a control signal output circuit, and an output buffer. The digital-to-analog converter generates first data voltages and second data voltages based on image data and a polarity control signal. Each first data voltage has a positive polarity, and each second data voltage has a negative polarity. The control signal output circuit outputs a first output control signal and a second output control signal based on the polarity control signal. A phase of the second output control signal is different from a phase of the first output control signal. The output buffer outputs the first data voltages based on the first output control signal and outputs the second data voltages based on the second output control signal.

Data driver and display apparatus including the same

In a liquid crystal display equipped with a timing controller, the timing controller generates a restoration signal having a predetermined pulse width in response to a data enable signal and operates in a fail mode when a difference between the data enable signal and the restoration signal is larger than a threshold value. Even if the data enable signal is distorted by electrostatic discharge, the liquid crystal display uses the restoration signal as a data enable signal without entering the fail mode when the distortion degree is smaller than the threshold value. Thus, a user may not recognize the electrostatic discharge when the electrostatic discharge is applied to the liquid crystal display for a short period of time.

Liquid crystal display having endurance against electrostatic discharge

A data processing apparatus which revises n-bit image data, includes a frame memory which stores therein n&#x2212;m bit image data of a previous frame; a memory interface which outputs n-bit revision data including upper n&#x2212;m bits having n&#x2212;m bit image data of the previous frame outputted by the frame memory and lower m bits having fixed data corresponding to a decimal value 1; a first reviser which revises a color temperature of current frame image data by using n-bit image data of a current frame and the revision data; and a second reviser which revises a gray scale of the current frame image data by using the image data outputted by the first reviser and the revision data.

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Hwaseong-si, South Korea

Ik-Hyun Ahn