Patent attributes
An organic light emitting diode (OLED) display panel and a preparation method thereof, the OLED display panel includes an OLED device layer, a light emitting layer, an encapsulation layer and a color film layer which are disposed layer by layer. The light emitting layer includes a first light emitting area and a second light emitting area which are spaced apart, and a pixel defined layer (PDL) area is disposed between the first light emitting area and the second light emitting area. The color film layer includes a first color film area and a second color film area which are spaced apart, and a black matrix (BM) area is disposed between the first color film area and the second color film area. A reflection layer is disposed between the color film layer and the light emitting layer.
