Abstract: A digital gamma correction part includes a memory and a selector. The memory is configured to store a basic gamma reference data, a first compensated gamma reference data and a second compensated gamma reference data, where respective data of the first compensated gamma reference data are greater than respective data of the basic gamma reference data, and respective data of the second compensated gamma reference data are less than respective data of the basic gamma reference data. The selector is configured to receive a luminance data determined based on a luminance of a display panel, and to output a gamma reference data by selecting one from the basic gamma reference data, the first compensated gamma reference data and the second compensated gamma reference data based on the luminance data and a gamma converted reference range.

Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.

Abstract: A display panel driving apparatus is disclosed. In one aspect the apparatus includes a gate driving part and a data driving part. The gate driving part is configured to increase a gate signal applied to a gate line of a display panel from an OFF voltage to a ON voltage, in response to an activation of a gate clock signal. It is also configured to decrease the gate signal from the ON voltage to a kickback compensation voltage between the OFF voltage and the ON voltage through a plurality of steps in response to an activation of a kickback compensation signal. The data driving part is configured to apply a data signal to a data line of the display panel. Therefore, a data-charging rate may be increased, and thus a display quality of the display apparatus may be increased.

Abstract: A method of fabricating a light-emitting device package includes preparing a carrier including a first surface and a second surface disposed opposite the first surface, forming a phosphor layer on the first surface of the carrier, emitting first light from a test light-emitting device toward the second surface of the carrier, analyzing second light passing through the phosphor layer, and determining a thickness of the phosphor layer based on the analysis.

Abstract: A method of fabricating a light-emitting device package includes preparing a carrier including a first surface and a second surface disposed opposite the first surface, forming a phosphor layer on the first surface of the carrier, emitting first light from a test light-emitting device toward the second surface of the carrier, analyzing second light passing through the phosphor layer, and determining a thickness of the phosphor layer based on the analysis.

Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.

Abstract: A nitride-based semiconductor device includes a buffer layer on a substrate, a nitride-based semiconductor layer on the buffer layer, at least one ion implanted layer within the nitride-based semiconductor layer, and a channel layer on the nitride-based semiconductor layer.

Abstract: A digital gamma correction part includes a memory and a selector. The memory is configured to store a basic gamma reference data, a first compensated gamma reference data and a second compensated gamma reference data, where respective data of the first compensated gamma reference data are greater than respective data of the basic gamma reference data, and respective data of the second compensated gamma reference data are less than respective data of the basic gamma reference data. The selector is configured to receive a luminance data determined based on a luminance of a display panel, and to output a gamma reference data by selecting one from the basic gamma reference data, the first compensated gamma reference data and the second compensated gamma reference data based on the luminance data and a gamma converted reference range.

Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.

Abstract: A display panel driving apparatus is disclosed. In one aspect the apparatus includes a gate driving part and a data driving part. The gate driving part is configured to increase a gate signal applied to a gate line of a display panel from an OFF voltage to a ON voltage, in response to an activation of a gate clock signal. It is also configured to decrease the gate signal from the ON voltage to a kickback compensation voltage between the OFF voltage and the ON voltage through a plurality of steps in response to an activation of a kickback compensation signal. The data driving part is configured to apply a data signal to a data line of the display panel. Therefore, a data-charging rate may be increased, and thus a display quality of the display apparatus may be increased.

Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.

Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.

Abstract: A display device includes a display panel including gate lines, data lines, and pixels connected to the gate lines and the data lines, a gate driver driving the gate lines, a data driver driving the data lines, a voltage generator generating first and second voltages to drive the gate driver, and a timing controller receiving an image signal, applying a data signal and first control signals to the data driver, and applying second control signals to the gate driver. The timing controller calculates a total operation time of the display panel and applies a first voltage control signal and a second voltage control signal to the voltage generator to correspondingly change a voltage level of at least one of the first and second voltages when the total operation time exceeds a predetermined reference time.

Abstract: A nitride-based semiconductor device includes a buffer layer on a substrate, a nitride-based semiconductor layer on the buffer layer, at least one ion implanted layer within the nitride-based semiconductor layer, and a channel layer on the nitride-based semiconductor layer.

Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.