Display panel having non-uniform black matrix

A display panel comprising:

• an array of pixels, each pixel comprising at least three sub-pixels;
• and
• a black matrix comprising a plurality of black matrix components, each black matrix component being arranged to form a boundary between two corresponding sub-pixels;
• wherein a relative position of a first black matrix component with respect to first two corresponding sub-pixels located in a central region of said array is different from a relative position of a second black matrix component with respect to second two corresponding sub-pixels located in a peripheral region of said array,
• wherein the relative positions are pre-determined based on both an observation angle and a height of the respective sub-pixels,
• wherein the observation angle is determined from pre-known positions of the display panel and at least one optical element for presenting a scene to a viewer's eye, and
• wherein the predetermination is configured to accurately pre-determine a leakage area of light from one sub-pixel to an adjacent sub-pixel, and determine the relative position of any included black matrix components to cover the leakage area to prevent light leakage.