A transparent display panel, comprising: a first region and a second region, wherein the first region comprises a plurality of first display units; the second region comprises a plurality of second display units; each of the plurality of first display units and the plurality of second display units comprises a light-transmitting subunit and a light-emitting subunit; a transmission rate of one of the plurality of first display units is higher than a transmission rate of one of the plurality of second display units; a luminance rate of one of the plurality of first display units is lower than a luminance rate of one of the plurality of second display units; the transmission rate of the one of the plurality of first display units is a ratio of an area of the light-transmitting subunit and an area of the one of the plurality of first display units, the transmission rate of the one of the plurality of second display units is a ratio of an area of the light-transmitting subunit and an area of the one of the plurality of second display units; and the luminance rate of the one of the plurality of first display units is a ratio of an area of the light-emitting subunit and an area of the one of the plurality of first display units, the luminance rate of the one of the plurality of second display units is a ratio of an area of the light-emitting subunit and an area of the one of the plurality of second display units, wherein the one of the plurality of first display units comprises a first driving circuit; the one of the plurality of second display units comprises a second driving circuit; characterised in that an area of the first driving circuit is smaller than an area of the second driving circuit. a first region and a second region, wherein the first region comprises a plurality of first display units; the second region comprises a plurality of second display units; each of the plurality of first display units and the plurality of second display units comprises a light-transmitting subunit and a light-emitting subunit; a transmission rate of one of the plurality of first display units is higher than a transmission rate of one of the plurality of second display units; a luminance rate of one of the plurality of first display units is lower than a luminance rate of one of the plurality of second display units; the transmission rate of the one of the plurality of first display units is a ratio of an area of the light-transmitting subunit and an area of the one of the plurality of first display units, the transmission rate of the one of the plurality of second display units is a ratio of an area of the light-transmitting subunit and an area of the one of the plurality of second display units; and the luminance rate of the one of the plurality of first display units is a ratio of an area of the light-emitting subunit and an area of the one of the plurality of first display units, the luminance rate of the one of the plurality of second display units is a ratio of an area of the light-emitting subunit and an area of the one of the plurality of second display units, wherein the one of the plurality of first display units comprises a first driving circuit; the one of the plurality of second display units comprises a second driving circuit; characterised in that an area of the first driving circuit is smaller than an area of the second driving circuit.