Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Shenzhen China Star Optoelectronics Technology Co., Ltd.

Yufan Deng

Mingjong Jou

Shen-sian Syu

ShenSian Syu

Hao Li

Ronggang Wang

Ming-Jong Jou

Yuan-Chun Wu

Kui Fan

Po-Yen Lu

A brightness compensation method and related product are disclosed. The method includes steps of receiving at least one compensation table sent from a mobile terminal by a driving device, and obtaining a target grayscale value of a target pixel point in a first display picture of the display device, determining a fixing value corresponding to the target pixel point according to the at least one compensation table, performing a brightness compensation to the target pixel point according to the fixing value, and driving the display device to display the first display picture after performing the brightness compensation. The embodiment of the present application can eliminate a brightness uneven phenomenon in the first display picture caused by attenuation of the luminous efficiency of the OLED device.

Brightness compensation method and related product

The present application discloses an energy-saving method for a display apparatus, a device and a display apparatus. The method includes: receiving an instruction to switch to an energy-saving mode; responding to the instruction, converting a color gamut of an input image to obtain an output image, the output image for performing display by the display apparatus, a corresponding component in a color coordinate of a selected primary color of the output image is smaller than the corresponding component in the color coordinate of the selected primary color of the input image, an luminance of the selected primary color of the output image is less than or equal to the luminance of the selected primary color of the input image; wherein a light-emitting efficiency of a selected primary color sub-pixel of the display apparatus is lowest to reduce the power consumption of the most-used selected primary-color sub-pixel and save energy.

Energy-saving method for display apparatus, device and display apparatus

The disclosure provided a compressing method of the grayscale compensation table of an OLED display panel, which comprising: step, when transmitting a set of grayscale compensation table of the OLED display panel to an encoder for encoding, firstly, performing a differential calculation on many grayscale compensation tables with a same color channel and different gray scales in the set of which to acquire a corresponding reference image and a difference image as replacements of many grayscale compensation tables; step, transmitting the above images to the encoder; step, the encoder compressing and encoding a received grayscale compensation table. The compressing method of the grayscale compensation table of the OLED display panel performs the intra-level differences between the same color component and the different grayscale compensation tables in the same OLED compensation table to improve an efficiency and a performance of the compression compensation table.

Compressing method of a grayscale compensation table of an OLED display panel

A compensation table compressing method is provided, processes each encoding block by prediction modes and select one prediction mode with the minimum rate distortion optimizing value as an optimized prediction mode by the rate distortion optimizing method such that each encoding block can correspond to an optimized prediction mode, which lowers the compression ratio of the compensation table and the time complexity of encoding and increases the quality of compression.

Compensation table compressing method

A method and a device for compensating brightness of an AMOLED display panel are provided. The method is simple, and the device is simple in structure and is easy to operate. By performing an aging experiment on the display panel in advance, an attenuation law that the brightness of sub-pixels varies with time and gray levels is obtained, and a compensation data is computed and a dynamic compensation table is generated. A correcting module corrects the inputted original gray levels based on the dynamic compensation table and the brightness of sub-pixels are compensated such that the display panel can display images normally.

Method and device for compensating brightness of AMOLED display panel

The invention provides a compression method and decompression method for compensation table of OLED display device, by performing encoding on the data with equal value successively arranged in the compensation table to compress the data amount of the compensation table, and by adjusting the default threshold to control the condition of starting a stroke encoding to prevent increasing redundancy and data expansion caused by encoding; as such, the compensation table is compressed, the system storage space occupied by the compensation table is reduced and the time of transmitting and burning data on production line is shortened.

Compression method and decompression method for compensation table of OLED display device

The invention provides a method for storing compensation table of OLED display panel, by obtaining the first and second sub-pixel compensation tables and defining the first sub-pixel compensation table as the benchmark table, and containing at least a calibration table based on the first and second sub-pixel compensation tables and a default compensation table translation formula, and guaranteeing the sum of the information entropy of the calibration tables being less than the information entropy of the second sub-pixel compensation table, and storing the compressed benchmark table and calibration table. As such, the present invention can eliminate the correlation among different sub-pixel compensation table before compression to achieve better compression efficiency and smaller size, the system storage space occupied by the compensation table is reduced and the time of transmitting and burning data on production line is shortened.

Method for storing compensation table of OLED display panel

The present invention provides a method of eliminating OLED display panel Mura. First, a corresponding calculation formula is selected by comparing the gamma value of the OLED display panel and the local gamma value at the present display gray scale, and the compensation gray scale which should be utilized is calculated, and then the OLED display panel is made to show the present compensation gray scale captured with the present calculation to determine whether the preset condition of ending the calculation of the compensation gray scale is achieved, and if the preset condition of ending the calculation of the compensation gray scale is not achieved, the iterative computation does not stop until the preset condition of ending the calculation of the compensation gray scale is achieved, which can rapidly and effectively eliminate the OLED display panel Mura to ensure the brightness uniformity of the OLED display panel.

Method of eliminating OLED display panel Mura

Disclosed is a method of eliminating OLED display panel Mura. The compensation gray scale which should be utilized is calculated according to the target brightnesses, the actual brightnesses at the 255 gray scale of the respective sub pixels, and the local gamma value at the present display gray scale, and then the OLED display panel is made to show the present compensation gray scale captured at present to determine whether the preset condition of ending the calculation of the compensation gray scale is achieved, and if it is not achieved, the actual brightness of the sub pixel at the compensation gray scale is captured to calculate again for obtaining the local gamma value at the present display gray scale and the compensation gray scale which should be utilized next time, and the iterative computation does not stop until the aforesaid preset condition is achieved.

The present invention provides a method of eliminating OLED display panel Mura. The compensation gray scale which should be utilized is calculated according to the target brightnesses, the actual brightnesses, the present display gray scales of the respective sub pixels and the gamma value of the OLED display panel, and then the OLED display panel is made to show the present compensation gray scale captured at present to determine whether the preset condition of ending the calculation of the compensation gray scale is achieved, and if the preset condition of ending the calculation is not achieved, the actual brightness of the sub pixel at the compensation gray scale is captured to calculate again for obtaining the compensation gray scale which should be utilized next time, and the iterative computation does not stop until the preset condition of ending the calculation of the compensation gray scale is achieved.

The present disclosure provides a method for calibrating brightness unevenness of an OLED display panel, the method includes: getting a brightness matrix of an OLED display panel in at least three gray scales, and determining a uniform brightness area and an uneven brightness area, and calculating a fitting Gamma value of each pixel corresponding to the at least three gray scales in the uneven brightness area, and fitting the fitting Gamma curve of the each pixel in the uneven brightness area, and calibrating the brightness of the uneven brightness area based on the fitting Gamma curve of the each pixel. The present disclosure can improve the accurate of the calibrating brightness and the efficiency of the calibration.

Method for calibrating brightness unevenness of OLED display panel

The present invention provides a storage method of OLED display panel compensation data. First, the OLED display panel is divided into a plurality of display zones, and then the compensation table and the link table are established. The compensation table records compensation information of the pixels which need to be compensated and zone row addresses and zone column addresses of the pixels. The link table records the zone codes of respective display zones and start digit addresses in the compensation table corresponded with the respective display zones. With the cooperation of the compensation table and the link table to store the OLED display panel compensation data, the storage space occupied by the OLED display panel compensation data can be decreased to lower the production cost of the OLED display panel and to raise the production efficiency of the OLED display panel.

Storage method of OLED display panel compensation data

The present invention provides a brightness compensation method of a Mura area and a design method of a Mura pixel dot brightness. By searching the right and lower normal pixel dots which are closest to the designated Mura pixel dot, and respectively recording the brightnesses of the right and lower normal pixel dots, and the distances between the right and lower normal pixel dots and the designated pixel dot, with combination of the brightnesses of the left and upper normal pixel dots adjacent to the designated Mura pixel dot, the weighted operation is executed to the brightnesses of the normal pixel dots at the right side, the lower side, the left side and the upper side to obtain the ideal brightness of the designated Mura pixel dot, and replace the original brightness of the designated Mura pixel dot with the obtained ideal brightness. Then, the brightness compensation of the Mura area is accomplished. The brightness of the Mura area after compensation is smoothly transited.

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Shenzhen, China

Yufan Deng