Active matrix display with pixel to pixel non-uniformity improvement at low luminance level

An active matrix display (1) comprising

• a pixel (P) including sub-pixels (10), and
• a drive circuit (6) for receiving an input signal (IV) comprising a desired luminance (BR) and a desired color (AC) of the pixel (P), to drive the sub-pixels (10) of the pixel (P), wherein the image input signal (IV) represents an image to be displayed on the active matrix display (1),
• the drive circuit (6) comprising:
• a threshold circuit (3) for receiving the image input signal to determine whether the desired luminance (BR) is below a predetermined level (VT), and
• an adaptation circuit (4) for, when the desired luminance (BR) is below the predetermined level (VT),
• changing a number of the sub-pixels (10) contributing to the desired luminance (BR) into a lower number of sub-pixels (10) than optimally required to obtain the desired color (AC), and
• increasing a luminance of at least one sub-pixel (10) of the lower number of sub-pixels (10) to obtain a higher luminance of the at lease one sub-pixel (10) of the lower number of sub-pixels (10) than if all the sub-pixels (10) required to obtain the desired color (AC) would contribute to the desired luminance (BR).

Method of displaying an image on an active matrix display comprising a pixel (P) including sub-pixels (10), the method comprises receiving (6) an image input signal (IV) comprising a desired luminance (BR) and a desired color (AC) of the pixel (P), the image input signal (IV) representing an image to be displayed on the active matrix display (1),

• the method comprising:
• determining (3) whether the desired luminance (BR) is below a predetermined level (VT), and when the desired luminance (BR) is below the predetermined level (VT):
• changing (4) a number of the sub-pixels (10) contributing to the desired luminance (BR) into a lower number of sub-pixels (10) than optimally required to obtain the desired color (AC), and
• increasing (4) a luminance of at least one sub-pixel (10) of the lower number of sub-pixels (10) to obtain a higher luminance of the at least one sub-pixel (10) of the lower number of sub-pixels (10) than if all the sub-pixels (10) required to obtain the desired color (AC) would contribute to the desired luminance (BR).