A non-self-luminous display device (LD6), comprising: a light-emitting unit (LU1) having a first end (T1, T2), the light-emitting unit comprising a first diode (DC) and a second diode (DC) coupled in series, wherein at least one of the first diode (DC) and the second diode (DC) is a light-emitting diode; and a display panel disposed opposite to the light-emitting unit, wherein the light-emitting unit is disposed on a back surface of the display panel and regarded as a backlight source of the display panel, wherein a first circuit unit (CU6) comprising two light-emitting control units (EU), a first thin-film transistor (TFT1) coupled to the first end (T1, T2) of the light-emitting unit and a power source (HP), a second thin-film transistor (TFT2), and a capacitor, wherein one of the light-emitting control units (EU) is coupled between the first thin-film transistor (TFT1) and the first end of the light-emitting unit, another one of the light-emitting control units (EU) is coupled between the first thin-film transistor (TFT1) and the power source (HP), each of the light-emitting control units (EU) comprises a thin-film transistor, one of a source and a drain of the second thin-film transistor (TFT2) is coupled to a gate of the first thin-film transistor (TFT1), and the light-emitting control units (EU) are coupled to another one of the source and the drain of the second thin-film transistor (TFT2), wherein the another one of the source and the drain of the second thin-film transistor (TFT2) is coupled to a data line (DL), and a gate of the second thin-film transistor (TFT2) is coupled to a scan line (GL). a light-emitting unit (LU1) having a first end (T1, T2), the light-emitting unit comprising a first diode (DC) and a second diode (DC) coupled in series, wherein at least one of the first diode (DC) and the second diode (DC) is a light-emitting diode; and a display panel disposed opposite to the light-emitting unit, wherein the light-emitting unit is disposed on a back surface of the display panel and regarded as a backlight source of the display panel, wherein a first circuit unit (CU6) comprising two light-emitting control units (EU), a first thin-film transistor (TFT1) coupled to the first end (T1, T2) of the light-emitting unit and a power source (HP), a second thin-film transistor (TFT2), and a capacitor, wherein one of the light-emitting control units (EU) is coupled between the first thin-film transistor (TFT1) and the first end of the light-emitting unit, another one of the light-emitting control units (EU) is coupled between the first thin-film transistor (TFT1) and the power source (HP), each of the light-emitting control units (EU) comprises a thin-film transistor, one of a source and a drain of the second thin-film transistor (TFT2) is coupled to a gate of the first thin-film transistor (TFT1), and the light-emitting control units (EU) are coupled to another one of the source and the drain of the second thin-film transistor (TFT2), wherein the another one of the source and the drain of the second thin-film transistor (TFT2) is coupled to a data line (DL), and a gate of the second thin-film transistor (TFT2) is coupled to a scan line (GL). <EOS>