An array substrate and a transflective liquid crystal display panel. The array substrate includes: a plurality of sub-pixel areas defined by gate lines and data lines distributed across each other, each of the sub-pixel areas comprising a transmission area and a reflection area, wherein, the array substrate further comprises an adjustment module; the adjustment module is configured to transmit an adjustment signal to the reflection area and adjust the reflection area from opaque state to transparent state upon an external light intensity being smaller than a preset light intensity.