Touch display panel, method for preparing the same, and display device

A method for preparing a touch display panel, comprising:

• forming a display module, the display module comprising an active layer, a source-drain layer and an intermediate insulation layer arranged between the active layer and the source-drain layer;
• and
• forming a touch module on the display module, the touch module comprising at least two touch electrodes and a touch insulation layer between the at least two touch electrodes;
• wherein a pixel unit in the display module comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel are a polygon with N sides or circle, and the N is an odd integer greater than 4,
• wherein the display module comprises a planarization layer arranged on and is in direct contact with the source-drain layer, and a thickness of the planarization layer is equal or greater than 2.5 microns and less than 3 microns,
• wherein the intermediate insulation layer, the touch insulation layer and the planarization layer are all made of an organic material,
• wherein each pixel unit comprises one blue sub-pixel, one red sub-pixel, and two green sub-pixels that are arranged in sequence along a first direction, and two green sub-pixels are arranged along a second direction perpendicular to the first direction,
• wherein an area of one of the two green sub-pixels is less than an area of the blue sub-pixel,
• wherein the red sub-pixel, the green sub-pixels, and the blue sub-pixel of a first row and the red sub-pixel, the green sub-pixels, and the blue sub-pixel of a second row are arranged in an offset and ordered manner, and
• wherein the touch display panel further comprises a color filter, and the color filter is arranged on a side of the touch insulation layer away from the thin film encapsulation layer and reused as a circular polarizer.