A liquid crystal display panel, comprising: a color filter substrate; an array substrate; and a liquid crystal layer disposed between the color filter substrate and the array substrate; wherein a protrusion is disposed on a surface of the color filter substrate facing the liquid crystal layer, and a reflection layer is disposed on a surface of the array substrate facing the liquid crystal layer, the protrusion and the reflection layer are disposed opposite to each other; a first electrode layer is disposed on a surface of the protrusion facing the liquid crystal layer and a second insulating layer is disposed on a surface of a source/ drain electrode facing the liquid crystal layer; a first alignment layer is disposed on the first electrode layer; a second electrode layer and a second alignment layer are sequentially disposed on a surface of the reflection layer and the array substrate facing the liquid crystal layer; a height of the protrusion is half a thickness of the liquid crystal layer; characterised in that; alignment directions of the first and second alignment layers (27, 28) are orthogonal, so that when the power is on, long axes of liquid crystal molecules in the liquid crystal layer are spirally aligned parallel to the color filter substrate and the array substrate, and the liquid crystal molecules in a reflective region transform incident circularly polarized light between circularly polarized light and a linear polarized light in a horizontal direction, at the reflection layer and the liquid crystal molecules in a transmissive region transform incident circularly polarized light between left-handed circularly polarized light and a right-handed circularly polarized light. a color filter substrate; an array substrate; and a liquid crystal layer disposed between the color filter substrate and the array substrate; wherein a protrusion is disposed on a surface of the color filter substrate facing the liquid crystal layer, and a reflection layer is disposed on a surface of the array substrate facing the liquid crystal layer, the protrusion and the reflection layer are disposed opposite to each other; a first electrode layer is disposed on a surface of the protrusion facing the liquid crystal layer and a second insulating layer is disposed on a surface of a source/ drain electrode facing the liquid crystal layer; a first alignment layer is disposed on the first electrode layer; a second electrode layer and a second alignment layer are sequentially disposed on a surface of the reflection layer and the array substrate facing the liquid crystal layer; a height of the protrusion is half a thickness of the liquid crystal layer; characterised in that; alignment directions of the first and second alignment layers (27, 28) are orthogonal, so that when the power is on, long axes of liquid crystal molecules in the liquid crystal layer are spirally aligned parallel to the color filter substrate and the array substrate, and the liquid crystal molecules in a reflective region transform incident circularly polarized light between circularly polarized light and a linear polarized light in a horizontal direction, at the reflection layer and the liquid crystal molecules in a transmissive region transform incident circularly polarized light between left-handed circularly polarized light and a right-handed circularly polarized light.