Display panel and display apparatus

A display apparatus, comprising:

• a display panel,
• wherein the display panel includes:
• a display substrate;
• a birefringence layer, disposed on a display surface of the display substrate, wherein the birefringence layer includes at least one first region, the at least one first region is disposed at least in a display region, in the first region:
• a plurality of repeating units are sequentially disposed along a first direction parallel to the display surface of the display substrate, and one of the plurality of repeating units includes at least two refractive regions that are sequentially arranged along the first direction to form;
• and
• a light valve disposed between the display substrate and the birefringence layer,
• wherein:
• in each of the plurality of repeating units, refractive indexes of the at least two refractive regions are different from each other;
• an interface between any adjacent refractive regions is a first interface and the first interface is parallel to an immediate adjacent first interface;
• the first interface forms an acute angle α with the display surface of the display substrate;
• a sum width the at least two refractive regions of each repeating unit along a second direction perpendicular to the first interface is f;
• λ is a wavelength of light emitted from the display panel;
• and
• f<λ;
• the light valve is configured to control a polarization direction of an incident light of the birefringence layer to be a first polarization direction at a first time point, and to control the polarization direction of the incident light of the birefringence layer to be a second polarization direction at a second time point;
• and
• the birefringence layer is configured to generate an ordinary light when receiving the incident light at the first polarization direction to allow forming a first frame of image for the incident light received at the first time point, and to generate an extraordinary light when receiving the incident light at the second polarization direction to allow forming a second frame of image for the incident light received at the second time point, wherein light emitting positions of light generated by a same sub-pixel in the first frame of image and the second frame of image on the display panel are relatively shifted.