A transflective liquid crystal display device includes a first substrate including first electrodes; a second substrate including second electrodes; a liquid crystal material interposed between the first and second substrates; and a display region including a plurality of pixels each having a reflective region and a transmissive region. The reflective and transmissive regions are arranged in strip shapes lying across pixel rows. The first substrate includes a layer-thickness adjusting layer adjusting retardation in the reflective and transmissive regions. The layer-thickness adjusting layer includes thick portions arranged in the reflective regions; thin portions arranged in the transmissive regions; step portions formed in the display region at boundaries between the thick and thin portions such that inclined planes are formed in a vertical direction; and relieving portions formed outboard the display region to reduce a step difference between the thick and thin portions.