Display device and integrated circuit chip

A display device comprising:

• a plurality of pixels;
• a memory configured to store a lookup table of compensation values for pixels at only non-adjacent locations among the plurality of pixels and substitution values for bilinear compensation values;
• and
• a data compensator configured to calculate the bilinear compensation values corresponding to locations where an image signal is displayed, wherein the calculation is performed with a bilinear compensation method using the lookup table of compensation values for pixels at only non-adjacent locations and the substitution values, wherein the substitution values are determined by a bit shift to avoid the usage of a division operator in the data compensator, and wherein the image signal is generated by adding the bilinear compensation values to an uncompensated image signal at corresponding locations,
• wherein the data compensator performs the bilinear compensation method using the following equation:
• g=a+(b−a)K1>>16 bit×x+(c−a)K2>>16 bit×y+(a+d−b−c)K3>32 bit×xy
• wherein g denotes a compensation value corresponding to a location where the image signal is displayed, a, b, c, and d denote compensation values included in the lookup table, x and y denote a location value indicating a location where the image signal is displayed, >>16 bit denotes 16 bit shifts, >>32 bit denotes 32 bit shifts, and K1, K2, and K3 are substitution values,
• wherein the substitution value K1 is
• K
• ⁢
• ⁢
• 1
• =
• 2
• 16
• W
• ,
• the substitution value K2 is
• K
• ⁢
• ⁢
• 2
• =
• 2
• 16
• H
• ,
• the substitution value K3 is
• K
• ⁢
• ⁢
• 3
• =
• 2
• 32
• HW
• ,
• wherein W denotes the number of pixels arranged between two pixels respectively corresponding to a compensation value a and a compensation value b included in the lookup table, and H denotes the number of pixels arranged between two pixels corresponding to the compensation value a and a compensation value c included in the lookup table.