Method and device for operating a display afflicted with wear

A process for operating a wear-afflicted display having defined pixels, comprising:

• Assigning each pixel a memory address in a memory element to record an operating time of each pixel, the pixel being integrated over the operating time and operating intensity to determine a pixel wear value (Rint, Gint, Bint);
• Storing the pixel wear value for each pixel in the form of a non-volatile stored wear value (Rvn, Gvn, Bvn) in a non-volatile memory for each of the three basic colors including red, green, and blue;
• Obtaining the non-volatile stored pixel wear value (Rvn, Gvn, Bvn) as a sum of the most significant bits integrated over the operating time of the pixel of a pixel wear value (Rvf, Gvf, Bvf) that is volatile stored in a volatile memory,
• Wherein a correction value (Rkor, Gkor, Bkor) for correcting the respective pixel signal (R, G, B) that is individual to each pixel is stored in the same memory cell (Rvf, Gvf, Bvf) of the volatile memory as the volatile stored pixel wear value (Rvf, Gvf, Bvf), and a characteristic that is proportional to the respective pixel wear values is stored in addition to or alternatively the pixel wear values.

A wear-afflicted display, comprising:

• a plurality of pixels;
• a logic element connected to the display;
• and
• a memory element, including a volatile memory and a non-volatile memory,
• wherein the logic element is configured to determine a pixel wear value (Rint, Gint, Bint) that is individual to each of the plurality of pixels, the pixel wear value (Rint, Gint, Bint) being stored in the volatile memory for each basic color including red, green, and blue, the pixel wear value (Rint, Gint, Bint) representing one of an operating time and an operating intensity of a respective pixel (R, G, B) of the display, and
• wherein a non-volatile stored pixel wear value (Rint, Gint, Bint) corresponds to a sum of the most significant bits of the volatile stored pixel wear value (Rint, Gint, Bint) integrated over the operating time of the pixel, and
• wherein the logic element is further configured to determine a pixel correction value (Rkor, Gkor, Bkor) that is individual to each pixel, the pixel correction value (Rkor, Gkor, Bkor) being stored in the volatile memory for each basic color red, green, and blue, for the correction of the respective pixel signal (R, G, B),
• wherein the pixel wear value (Rint, Gint, Bint) and the pixel correction value (Rkor, Gkor, Bkor) being stored in a same memory cell (Rvf, Gvf, Bvf) of the volatile memory, and
• wherein characteristics that are proportional to the respective pixel wear values are stored in addition to or alternatively to the pixel wear values.

A wear-afflicted display comprising:

• a plurality of pixels;
• a logic element connected to the display;
• and
• a memory element, including a volatile memory and a non-volatile memory,
• wherein the logic element is configured to determine a pixel wear value (Rvn, Gvn, Bvn), the pixel wear value (Rvn, Gvn, Bvn) being non-volatile stored in the non-volatile memory for each basic color including red, green, and blue,
• wherein the non-volatile stored pixel wear value (Rvn, Gvn, Bvn) corresponds to a sum of the most significant bits of a volatile stored pixel wear value (Rvn, Gvn, Bvn) integrated over the operating time of the pixel, and
• wherein the less significant bits of the volatile stored pixel value (Rvf, Gvf, Bvf) are retained unchanged in the volatile memory.