Liquid crystal display apparatus
View Patent ↗In a liquid crystal display device including a liquid crystal display panel ( 10 ) including a liquid crystal layer ( 3 ) sandwiched between a first substrate ( 1 ) and a second substrate ( 2 ) having transparent electrodes ( 5, 6 ) on inner surfaces opposing to each other, the film thickness of at least one of the transparent electrodes ( 5, 6 ) formed on the first and second substrates ( 1, 2 ) is set so that light passing through the transparent electrode and exhibiting a maximum transmittance has a color within either a region defined by an x value of 0.22 to 0.28 and a y value of 0.21 to 0.31 or a region defined by an x value of 0.28 to 0.34 and a y value of 0.22 to 0.35 in a chromaticity diagram of a CIE 1931 color system using a white light source. This reduces coloring irregularities due to a film thickness error caused during manufacturing of the transparent electrodes to enable performance of uniform display.
1. A liquid crystal display device comprising a liquid crystal display panel including a liquid crystal layer sandwiched between a first substrate on a visible side and a second substrate on an opposite side to the visible side having transparent electrodes on inner surfaces opposing to each other,
wherein a transflective film formed of a dielectric multilayered film made by alternately layering a high refractive index film and a low refractive index film is provided between said second substrate and said transparent electrode on said second substrate,
wherein at least one of said transparent electrodes formed on said first and second substrates is colored, and
wherein spectroscopic characteristics within a visible region of a reflected light or a transmitted light by said transflective film are almost flat through correction of coloring of light transmitted through said at least one transparent electrode.
2. The liquid crystal display device according to claim 1 ,
wherein a film thickness of said at least one of transparent electrodes is set so that light passing through said transparent electrode and exhibiting a maximum transmittance has a color within either a region defined by an x value of 0.22 to 0.28 and a y value of 0.21 to 0.31 or a region defined by an x value of 0.28 to 0.34 and a y value of 0.22 to 0.35 in a chromaticity diagram of a CIE 1931 color system using a white light source.
3. The liquid crystal display device according to claim 2 ,
wherein a first light control layer having optical anisotropy is provided on an opposite side to said liquid crystal layer of said first substrate, and said first light control layer has a characteristic of correcting coloring of light emitted from said liquid crystal display panel to make spectroscopic characteristics thereof within a visible region almost flat.
4. The liquid crystal display device according to claim 3 ,
wherein an auxiliary light source placed on an opposite side to said liquid crystal layer of said second substrate; and
a second light control layer having optical anisotropy placed between said auxiliary light source and said second substrate, are provided respectively, and
wherein either or both of said auxiliary light source and said second light control layer has/have a characteristic of correcting coloring of transmitting light emitted from a light source and transmitting through said liquid crystal display panel and said first light control layer to make spectroscopic characteristics within the visible region of the transmitting light almost flat.
5. The liquid crystal display device according to claim 2 ,
wherein said at least one transparent electrode is a transparent electrode formed on said second substrate.
6. The liquid crystal display device according to claim 2 ,
wherein said at least one transparent electrode is 1600 Å to 2000 Å in film thickness.
7. The liquid crystal display device according to claim 2 ,
wherein said at least one transparent electrode is 2600 Å to 3000 Å in film thickness.