With the present invention, a fitting curve (f1) of the gamma curve (e1) arranged to be above a fitting curve of the gamma curve (e2), except in a region where the fitting curve (f1) shows a reflectivity of 0 and the fitting curve of the gamma curve (e2) shows a transmissivity of 0, and a gamma curve (e1) of reflective display and a gamma curve (e2) of transmissive display are obtained from measurement. Further, the fitting curve (f1) includes no gray scale inversion but at least one point of inflection (P1) where a sign of a differential coefficient is switched over. Thereby, it becomes possible to realize a liquid crystal display panel and a liquid crystal display device, for displaying images in a transmissive mode and a reflective mode, each of the liquid crystal display panel and the liquid crystal display device easily having an improvement in display quality of reflective display.