Display panel and method for producing the same and display apparatus

A display panel, comprising:

• a first sub-pixel region;
• a second sub-pixel region, wherein an aperture opening ratio of the first sub-pixel region is less than an aperture opening ratio of the second sub-pixel region;
• a third sub-pixel region which has an aperture opening ratio larger than the aperture opening ratio of the second sub-pixel region;
• an insulation layer, having a first thickness in the first sub-pixel region less than a second thickness of the insulation layer in the second sub-pixel region, so that a first cell gap of the display panel at the first sub-pixel region is larger than a second cell gap of the display panel at the second sub-pixel region, thereby at least partially compensating for a difference between the aperture opening ratio of the first sub-pixel region and the aperture opening ratio of the second sub-pixel region;
• a color filter layer;
• a main photo spacer provided at the first sub-pixel region, the main photo spacer extending an entire thickness of a liquid crystal layer of the display panel;
• and
• an auxiliary photo spacer correspondingly provided at the second sub-pixel region;
• wherein an area which the main photo spacer occupies in the first sub-pixel region is larger than an area which the auxiliary photo spacer occupies in the second sub-pixel region,
• wherein there is no photo spacer in the third sub-pixel region,
• wherein the main photo spacer, the auxiliary photo spacer and the insulation layer both are provided on a base substrate of an array substrate, and the main photo spacer and the auxiliary photo spacer are directly disposed on the insulation layer,
• wherein the insulation layer is composed of an organic insulation layer and a passivation layer provided on a base substrate of an array substrate, and the organic insulation layer and the passivation layer are provided on the base substrate of the array substrate adjacent to a base substrate of a color filter substrate,
• wherein the second thickness of the insulation layer in the second sub-pixel region is less than a third thickness of the insulation layer in the third sub-pixel region, so that the second cell gap of the display panel at the second sub-pixel region is larger than a third cell gap of the display panel at the third sub-pixel region, thereby at least partially compensating for a difference between the aperture opening ratio of the second sub-pixel region and the aperture opening ratio of the third sub-pixel region,
• wherein the first cell gap of the first sub-pixel region and the second cell gap of the second sub-pixel region are configured such that a light transitivity of the second sub-pixel region is equal to that of the first sub-pixel region, and
• wherein the second cell gap of the second sub-pixel region and the third cell gap of the third sub-pixel region are configured such that a light transitivity of the third sub-pixel region is equal to that of the second sub-pixel region.