Display panel, display and displaying method

A display panel comprising:

• a first base substrate and a second base substrate arranged to be opposite to each other;
• a liquid crystal layer configured between the first base substrate and the second base substrate;
• and
• a light emitting device layer at a side of the first base substrate facing towards the second base substrate;
• and
• a grating layer between the light emitting device layer and the liquid crystal layer;
• wherein the grating layer comprises a plurality of light blocking portions and a plurality of light transmitting portions alternatingly arranged therein, the light blocking portions being reflective;
• wherein the display panel further comprises a light converting layer provided on each of the light blocking portions, wherein the light emitting device layer, the grating layer and the light converting layer are arranged in order in a direction from the first base substrate to the second base substrate;
• and
• wherein a second insulating layer and a second electrode layer are provided between the grating layer and the light converting layer, wherein the second electrode layer comprises a plurality of second sub electrodes, the light converting layer comprises a plurality of light converting units, an orthographic projection of each of the light converting units onto the first base substrate being of superposition with an orthographic projection of a corresponding one of the second sub electrodes onto the first base substrate, and the orthographic projection of each of the light converting units onto the first base substrate is within an orthographic projection of a corresponding one of the light blocking portions on the first base substrate.