Abstract: A display panel includes a light-transmitting area and a display area including a first and a second display area, the first display area and the light-transmitting area constitute a transparent display area; the display area includes: a display substrate including a light-emitting area and a non-light-emitting area; a low refraction layer; a high refraction layer, the high refraction layer covering at least the light-emitting area and a side surface of the low refraction layer facing the light-emitting area; the refractive index of the high refraction layer is greater than that of the low refraction layer, the side surface of the low refraction layer facing the light-emitting area is in contact with the high refraction layer to form a total reflection interface, the total reflection interface is configured to allow the display light emitted from the light-emitting area and incident through the high refraction layer to perform total reflection.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and pixels located on the base substrate. Each pixel includes a plurality of sub-pixels; the plurality of sub-pixels includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel. A light-emitting region of one pixel is located in one dummy pattern, light-emitting regions of different pixels are located in different dummy patterns; adjacent dummy patterns where light-emitting regions of adjacent pixels are located do not overlap with each other; the dummy pattern includes a circle or an ellipse, a ratio of a major axis to a minor axis of the ellipse ranges from 1.3 to 1.01; and in each pixel among the at least one pixel, a light-emitting region of a second color sub-pixel surrounds at least a portion of a light-emitting region of a first color sub-pixel.

Abstract: A display panel includes a light-transmitting area and a display area including a first and a second display area, the first display area and the light-transmitting area constitute a transparent display area; the display area includes: a display substrate including a light-emitting area and a non-light-emitting area; a low refraction layer; a high refraction layer, the high refraction layer covering at least the light-emitting area and a side surface of the low refraction layer facing the light-emitting area; the refractive index of the high refraction layer is greater than that of the low refraction layer, the side surface of the low refraction layer facing the light-emitting area is in contact with the high refraction layer to form a total reflection interface, the total reflection interface is configured to allow the display light emitted from the light-emitting area and incident through the high refraction layer to perform total reflection.