An array substrate comprising a base substrate and a plurality of pixel units disposed on the base substrate, each of the pixel units comprising: a thin film transistor structure on the base substrate; and an OLED driven by the thin film transistor structure, the OLED disposed in the pixel region of the pixel units, the OLED sequentially including a first electrode which is transparent, an organic light-emitting layer and a second electrode in a direction away from the base substrate, the second electrode used for reflecting lights; a transflective layer disposed between the OLED and the thin film transistor structure; a color filter disposed between the second electrode of the OLED and the transflective layer; wherein the second electrode of the OLED and the transflective layer constitute a microcavity structure; the thin film transistor structure comprises a first gate and a second gate on the base substrate, a gate insulation layer over the first gate and the second gate, a first active layer and a second active layer on the gate insulation layer, a first source and a first drain on the first active layer, a second source and a second drain on the second active layer, the first drain being connected to the second gate, the first gate, the gate insulation layer, the first active layer, the first source and the first drain constituting a switching thin film transistor, the second gate, the gate insulation layer, the second active layer, the second source and the second drain constituting a driving thin film transistor; the second drain of the driving thin film transistor and the first electrode of the OLED are electrically connected, a passivation layer is disposed on the thin film transistor structure; the OLED is disposed over the passivation layer, the transflective layer is disposed over the passivation layer, the color filter is disposed over the transflective layer, the color filter of different colors has different thickness, both the transflective layer and the color filter are disposed in the pixel region of the pixel units, and the first electrode of the OLED is located above the color filter, the array substrate being characterized in that, the array substrate comprises a resin layer disposed between the color filter and the first electrode, the first electrode being connected to the second drain by via holes through the resin layer and the passivation layer. a thin film transistor structure on the base substrate; and an OLED driven by the thin film transistor structure, the OLED disposed in the pixel region of the pixel units, the OLED sequentially including a first electrode which is transparent, an organic light-emitting layer and a second electrode in a direction away from the base substrate, the second electrode used for reflecting lights; a transflective layer disposed between the OLED and the thin film transistor structure; a color filter disposed between the second electrode of the OLED and the transflective layer; wherein the second electrode of the OLED and the transflective layer constitute a microcavity structure; the thin film transistor structure comprises a first gate and a second gate on the base substrate, a gate insulation layer over the first gate and the second gate, a first active layer and a second active layer on the gate insulation layer, a first source and a first drain on the first active layer, a second source and a second drain on the second active layer, the first drain being connected to the second gate, the first gate, the gate insulation layer, the first active layer, the first source and the first drain constituting a switching thin film transistor, the second gate, the gate insulation layer, the second active layer, the second source and the second drain constituting a driving thin film transistor; the second drain of the driving thin film transistor and the first electrode of the OLED are electrically connected, a passivation layer is disposed on the thin film transistor structure; the OLED is disposed over the passivation layer, the transflective layer is disposed over the passivation layer, the color filter is disposed over the transflective layer, the color filter of different colors has different thickness, both the transflective layer and the color filter are disposed in the pixel region of the pixel units, and the first electrode of the OLED is located above the color filter, the array substrate being characterized in that, the array substrate comprises a resin layer disposed between the color filter and the first electrode, the first electrode being connected to the second drain by via holes through the resin layer and the passivation layer.