A liquid crystal display (LCD) panel, an LCD and a manufacturing method thereof. The LCD panel comprises a first substrate (1) and a second substrate (2) arranged opposite to each other; a liquid crystal layer (3) is disposed between the first substrate (1) and the second substrate (2); the first substrate (1) comprises a plurality of pixel regions; each pixel region comprises a transmission section (4) and a reflection section (5); the first substrate is provided with a reflective layer (6) disposed in the reflection section (5); polymers (30) formed by polymerization of ultraviolet curable monomers are uniformly distributed in the liquid crystal layer (3) of the reflection section (5). The LCD panel adopts a single cell gap and controls the phase retardation amount of reflected light emitted out from the reflection section (5) through the polymers (30), so that phase of the reflected light can match with the phase of transmitted light emitted out from the transmission section (6).