The present disclosure discloses a display driving apparatus having a mura compensation function and a method of compensating for mura of the same. To this end, the display driving apparatus may include a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored, and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied.

A display driver integrated circuit includes an input port configured to receive a display sensing signal for a display panel; a resistive random access memory coupled to the input port and configured to store a sensing value indicative of the display sensing signal; a display compensation logic coupled to the resistive random access memory to receive the sensing value and configured to determine, based on the sensing value, a compensation value to enable the display panel to modify a display control signal; and an output port coupled to the display compensation logic to transmit a display compensation voltage signal to the display panel. The display compensation voltage signal is generated based on the compensation value.

Systems and methods are provided for using logic-based compensation to optimize luminance uniformity of light emitting diode (LED) backlight panels employed for display panel assemblies such as liquid crystal displays (LCDs). These systems and methods may be implemented using a uniformity profile (e.g., uniformity lookup table “U-LUT”) in the LED backlight driving process to provide values to separately control luminance of different backlight segments of a LED backlight panel in order to improve backlight segment luminance uniformity.

A method includes generating first demura data comprising first correction amounts for pixels in a first region of a display panel. The first region has a first pixel density. The method further includes generating second demura data comprising second correction amounts for pixels in a second region of the display panel. The second region has a second pixel density different from the first pixel density. The method further includes generating modified second demura data by modifying the second correction amounts by a first factor. The method further comprises compressing the first demura data and the modified second demura data to generate compressed demura data. The method further includes providing the compressed demura data and factor information indicative of the first factor to a display driver.

A display device includes a display panel having a plurality of sensing channels connected to a plurality of subpixels to detect a driving characteristic value, a data driving circuit including an analog-to-digital converter converting a sensing voltage detected through the plurality of sensing channels into digital sensing data and converting a subpixel driving voltage detected through at least one dummy channel into digital dummy sensing data, and a timing controller calculating an intensity of a current flowing through the data driving circuit based on the digital dummy sensing data transferred from the data driving circuit and compensating for image data transferred to the data driving circuit.

A novel image correction system is provided. The image correction system includes an imaging device, a first arithmetic device, a display portion including a plurality of pixels, and a second arithmetic device. The imaging device obtains imaging data by capturing a first-gray-level image displayed on the display portion. The first arithmetic device calculates the luminous intensity of each of the pixels and a correction standard by using the imaging data. The first arithmetic device calculates correction data for each of the pixels by using the luminous intensity and the correction standard. The second arithmetic device corrects a video signal by using the correction data. The display portion displays an image using the corrected video signal. The first arithmetic device calculates correction data for pixels that emit red light, pixels that emit green light, and pixels that emit blue light and modifies the correction data by using color temperature data.

A display device can include a display panel including a plurality of subpixels configured to display an image; a data driving circuit configured to supply a data signal to the plurality of subpixels; a gate driving circuit configured to supply a gate signal to the plurality of subpixels; and a timing controller configured to receive image data of a subsequent frame of an image of a current frame being displayed on the display panel, and differently control the data driving circuit during a blank period between the current frame and the subsequent frame based on a gray value of at least one edge subpixel among a plurality of edge subpixels in the image data of the subsequent frame. the plurality of edge subpixels are subpixels among the plurality of subpixels that are located adjacent to the gate driving circuit or at an edge of the display panel.

A system and method for setting one or more compensation coefficients for a transistor. In some embodiments, a method for setting a first compensation coefficient for a transistor includes: determining a plurality of measured transistor currents, each at a respective one of a plurality of transistor control voltages; setting the first compensation coefficient based on the measured transistor currents and the transistor control voltages; and adjusting a voltage applied to a gate of the transistor based on the first compensation coefficient, the voltage corresponding to a color value.

A method for compressing and applying data of the sensing-less compensating system may be provided for a display device having subpixels. As the system can update an accumulated stress data of a subpixel which is accumulated according to a display driving data signal in a real time and perform a compensation, a real time compensation for a degradation of the subpixel can be performed without sensing the subpixel. Furthermore, as the system may provide a bit size information for restoration according to a comparison result of data subject to loss-compress and a loss reference value when loss-compressing the accumulated stress data, a loss ratio of a loss-compression data can be reduced. A display device and a sensing-less compensation system are also disclosed.

A voltage-programmed display system allows measurement of effects on pixels in a panel that includes both active pixels and reference pixels coupled to a supply line and a programming line. The reference pixels are controlled so that they are not subject to substantial changes due to aging and operating conditions over time. A readout circuit is coupled to the active pixels and the reference pixels for reading at least one of current, voltage or charge from the pixels when they are supplied with known input signals. The readout circuit is subject to changes due to aging and operating conditions over time, but the readout values from the reference pixels are used to adjust the readout values from the active pixels to compensate for the unwanted effects.