A liquid crystal display device (10) for a head-up display device includes: a light source unit (12) including a reflection film (42) provided on a substrate, and a light-emitting element (41); a liquid crystal display element (11) including a polarizer (30) provided on the light source unit (12) side, and a polarizer (31) disposed to be opposed to the polarizer (30) via a liquid crystal layer (22); a retardation plate (34) provided between the reflection film (42) and the polarizer (30), and imparting a retardation of λ/4 to light; a reflective polarizer (33) provided between the retardation plate (34) and the polarizer (30), and reflecting a light component which is parallel to a reflection axis; and a diffusion member (32) provided between the reflective polarizer (33) and the polarizer (30).

An LCD device includes a liquid crystal panel (110); a first polarizer (120) attached to a first surface of the liquid crystal panel (110) and including a first polarizing film (122), first and second optical compensation films (124,125) disposed on one surface of the first polarizing film (122), and a phase retardation film (127), a protective film (128) and a functional film (129) disposed on another surface of the first polarizing film (122); and a second polarizer (130) attached to a second surface of the liquid crystal panel (110) and including a second polarizing film (130), an inner protective film (134) disposed on one surface of the second polarizing film (130), and an outer protective film (136) disposed on another surface of the second polarizing film (130), wherein the first polarizing film is disposed between the phase retardation film (127) and the liquid crystal panel (110), and the phase retardation film (127) has a retardation value of λ/4.

The present invention provides a liquid crystal display device exhibiting an excellent gray scale inversion characteristic in a state where a color close to black is displayed. The present invention is a liquid crystal display device including a first polarizer, a second polarizer disposed to face the first polarizer, a liquid crystal display panel provided between the first polarizer and the second polarizer, and a first phase plate and a second phase plate provided between the first or second polarizer and the liquid crystal display panel. In the liquid crystal display device, the liquid crystal display panel has a pair of substrates disposed to face each other and a liquid crystal layer sandwiched between the pair of substrates, the liquid crystal layer includes a homogeneously aligned liquid crystal molecule, the first phase plate includes a liquid crystal film, the liquid crystal film is formed by being set in a state where a nematic liquid crystal is hybrid-aligned, and a specific phase difference as a phase difference in a perpendicular direction of a member which is present between the first and second polarizers, excluding the liquid crystal layer and the first phase plate, is 120 nm or more.

To provide a liquid crystal display device capable of preventing light leakage when a stress is exerted during no operation in a normally black IPS mode.

In a normally black IPS mode liquid crystal display device 15, a liquid crystal layer 5 is interposed between a first glass substrate 1 and a second glass substrate 2, and a third glass substrate 3 is fixed to the second glass substrate 2. At that time, a retardation layer 7 to impart to a transmitted light a phase difference corresponding to a half-wavelength of the transmitted light, is provided between the second glass substrate 2 and the third glass substrate 3. Further, a first polarizing plate 8 and a second polarizing plate 9 are provided so that the respective absorption axes are perpendicular to each other.

An elliptical polarizer with excellent viewing angle characteristics is provided which comprises at least a first polarizer, a first optical anisotropic layer, a second optical anisotropic layer, and a third optical anisotropic layer, laminated in this order, wherein the first optical anisotropic layer satisfies [1] 50≤Re1≤500, the second optical anisotropic layer satisfies [2] 0≤Re2≤20 and [3] -500≤Rth2≤-30, and the third optical anisotropic layer satisfies [4] 100≤Re3≤180 wherein Re and Rth indicate the retardation values in the plane and thickness direction, respectively, of each of the optical anisotropic layers.

A display panel and a manufacturing method thereof that belong to the field of transflecting liquid crystal display technology are provided and can address the problems of dark state leakage and complex manufacturing process of current transflecting liquid crystal display devices. Each pixel of the display panel includes a transmission region (91) and a reflection region (92), and the display panel includes a first polarizer (11), a first base substrate (19), a first alignment layer (13), a liquid crystal layer (5), a second alignment layer (23), a second base substrate (29), and a second polarizer (21). A reflection layer (921) is provided between the second alignment layer (23) and the second polarizer (21) in the reflection region (92). The liquid crystal layer (5) in the reflection region (92) includes nematic liquid crystal (51) and a polymer network (52). The liquid crystal layer (5) in the transmission region (91) includes a liquid crystal mixture including the nematic liquid crystal (51) and polymerizable monomers (521). The polymer network (52) in reflection region (92) is formed by polymerizing the polymerizable monomers (521) in the liquid crystal mixture. When there is no electric field, the alignment direction of nematic liquid crystal (51) in the reflection region is different from the orientation of the first alignment layer (13), and the alignment direction of nematic liquid crystal (51) in the transmission region (91) is the same as that of the first alignment layer (13).