Wavelength converting unit-containing substrate, manufacture method therefor and display panel

A wavelength converting unit-containing substrate comprising:

• a bank layer disposed on a base substrate, the bank layer comprising a plurality of bank segments, which are interconnected to enclose a plurality of sub-pixel regions, wherein adjacent sub-pixel regions are spaced apart by one of the plurality of bank segments,
• the plurality of sub-pixel regions comprises sub-pixel regions for different colors, and each of the sub-pixel regions is filled with a wavelength converting unit for a corresponding color or filled with a transparent color filtering unit,
• wherein for a bank segment between adjacent sub-pixel regions for different colors, an additional bank is provided at a side thereof away from the base substrate.