Display panel and display method thereof, display device

A display method of a display panel, the display panel comprising:

• a first substrate and a second substrate disposed to be opposite to each other;
• a liquid crystal (LC) layer located between the first substrate and the second substrate;
• a polarizer disposed at a side of the LC layer far away from the second substrate;
• and an alignment layer disposed at both sides of the LC layer, wherein the second substrate is provided with a reflective layer, the reflective layer is configured to allow incident light transmitting through the first substrate to be reflected at a predetermined color on the reflective layer, wherein the display method comprises:
• controlling a LC molecule in the LC layer to rotate so that the incident light transmitting through the LC layer presents the predetermined color upon being reflected on the reflective layer and emits from a side of the first substrate,
• wherein the second substrate comprises a plurality of first sub-pixel regions, a plurality of second sub-pixel regions and a plurality of third sub-pixel regions;
• the reflective layer is a colored reflective layer, the colored reflective layer comprises a first reflective film, a second reflective film and a third reflective film which are disposed in the first sub-pixel region, the second sub-pixel region and the third sub-pixel region, respectively;
• the incident light is reflected at a first color, a second color and a third color on the first reflective film, the second reflective film and the third reflective film, respectively;
• and the first color, the second color and the third color constitute three primary colors,
• the first reflective film is a red color reflective film, the red color reflective film comprises a first transmittance part, a first spacer layer having a first thickness, and a first reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the first thickness is configured to allow the incident light to present a red color upon being reflected;
• the second reflective film is a green color reflective film, the green color reflective film comprises a second transmittance part, a second spacer layer having a second thickness, and a second reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the second thickness is configured to allow the incident light to present a green color upon being reflected;
• and
• the third reflective film is a blue color reflective film, the blue color reflective film comprises a third transmittance part, a third spacer layer having a third thickness, and a third reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the third thickness is configured to allow the incident light to present a blue color upon being reflected,
• wherein at least one of the first transmittance part, the second transmittance part and the third transmittance part is provided with a plurality of holes arranged in an array,
• the first transmittance part, the second transmittance part and the third transmittance part each are made of gold, and the first transmittance part, the second transmittance part and the third transmittance part each have a thickness in the range of 18-22 nm;
• the first reflective part, the second reflective part and the third reflective part each are made of silver, and the first reflective part, the second reflective part and the third reflective part each have a thickness in the range of 135-165 nm;
• and
• the first spacer layer, the second spacer layer and the third spacer layer each are made of aluminum oxide, wherein the first thickness is in the range of 44-52 nm, the second thickness is in the range of 84-102 nm, and the third thickness is in the range of 75-91 nm.

A display device, comprising a display panel, the display panel comprising:

• a first substrate and a second substrate disposed to be opposite to each other;
• a liquid crystal (LC) layer located between the first substrate and the second substrate;
• a polarizer disposed at a side of the LC layer far away from the second substrate;
• and
• an alignment layer disposed at both sides of the LC layer, wherein
• the second substrate is provided with a reflective layer, the reflective layer is configured to allow incident light transmitting through the first substrate to be reflected at a predetermined color on the reflective layer,
• wherein the second substrate comprises a plurality of first sub-pixel regions, a plurality of second sub-pixel regions and a plurality of third sub-pixel regions;
• the reflective layer is a colored reflective layer, the colored reflective layer comprises a first reflective film, a second reflective film and a third reflective film which are disposed in the first sub-pixel region, the second sub-pixel region and the third sub-pixel region, respectively;
• the incident light is reflected at a first color, a second color and a third color on the first reflective film, the second reflective film and the third reflective film, respectively;
• and the first color, the second color and the third color constitute three primary colors,
• the first reflective film is a red color reflective film, the red color reflective film comprises a first transmittance part, a first spacer layer having a first thickness, and a first reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the first thickness is configured to allow the incident light to present a red color upon being reflected;
• the second reflective film is a green color reflective film, the green color reflective film comprises a second transmittance part, a second spacer layer having a second thickness, and a second reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the second thickness is configured to allow the incident light to present a green color upon being reflected;
• and
• the third reflective film is a blue color reflective film, the blue color reflective film comprises a third transmittance part, a third spacer layer having a third thickness, and a third reflective part which are arranged in sequence along a direction far away from the first substrate;
• wherein the third thickness is configured to allow the incident light to present a blue color upon being reflected,
• wherein at least one of the first transmittance part, the second transmittance part and the third transmittance part is provided with a plurality of holes arranged in an array,
• the first transmittance part, the second transmittance part and the third transmittance part each are made of gold, and the first transmittance part, the second transmittance part and the third transmittance part each have a thickness in the range of 18-22 nm;
• the first reflective part, the second reflective part and the third reflective part each are made of silver, and the first reflective part, the second reflective part and the third reflective part each have a thickness in the range of 135-165 nm;
• and
• the first spacer layer, the second spacer layer and the third spacer layer each are made of aluminum oxide, wherein the first thickness is in the range of 44-52 nm, the second thickness is in the range of 84-102 nm, and the third thickness is in the range of 75-91 nm.