Liquid crystal display device
View Patent ↗According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate including a color filter, and a liquid crystal layer. The first substrate includes a light-reflecting layer, a transparent conductive layer, an insulating layer, a first pixel electrode, and a second pixel electrode. The color filter includes a first color layer and a second color layer. A gap between the first pixel electrode and the second pixel electrode, the first color layer or the second color layer, the light-reflecting layer, the transparent conductive layer and the insulating layer are overlaid.
1. A liquid crystal display device, comprising:
a first substrate;
a second substrate including a color filter opposed to the first substrate; and
a liquid crystal layer held between the first substrate and the second substrate,
the first substrate including:
a stacked layer body including a light-reflecting layer, and a transparent conductive layer disposed on the light-reflecting layer;
an insulating layer disposed on the stacked layer body; and
a light-reflective first pixel electrode and a light-reflective second pixel electrode disposed closer to the liquid crystal layer than the stacked layer body,
the second pixel electrode being adjacent to the first pixel electrode and spaced from the first pixel electrode with a gap,
the color filter including:
a first color layer having a transmitted light spectrum indicating a light transmittance peak within a first wavelength range; and
a second color layer having a transmitted light spectrum indicating a light transmittance peak within a second wavelength range which is on a side of a long wavelength in view of the first wavelength range,
the first pixel electrode corresponding to the first color layer,
the second pixel electrode corresponding to the second color layer,
the gap being located just above the stacked layer body,
the stacked layer body and the insulating layer reflecting adjusted light obtained by adjusting light incident from the liquid crystal layer side to the liquid crystal layer side, and
the adjusted light having a reflected light spectrum indicating a light reflectance peak within an adjusted wavelength range between the first wavelength range and the second wavelength range.
2. The liquid crystal display device of claim 1 , wherein
the first wavelength range is higher than or equal to 380 nm and lower than 490 nm, and
the second wavelength range is higher than or equal to 590 nm and lower than or equal to 780 nm.
3. The liquid crystal display device of claim 1 , wherein
the insulating layer is formed of silicon nitride.
4. The liquid crystal display device of claim 1 , wherein
the light-reflecting layer is formed of a metal.
5. The liquid crystal display device of claim 4 , wherein
the light-reflecting layer is opposed to the first pixel electrode and the second pixel electrode, and maintained at a constant potential.
6. The liquid crystal display device of claim 1 , wherein
the first color layer opposed to the gap is opposed to any one of the first pixel electrode and the second pixel electrode, and
the second color layer opposed to the gap is opposed to the other of the first pixel electrode and the second pixel electrode.
7. The liquid crystal display device of claim 1 , wherein
a thickness of the insulating layer is in a range from 170 to 190 nm.
8. The liquid crystal display device of claim 1 , wherein
a thickness of the transparent conductive layer is in a range from 40 to 60 nm.
9. The liquid crystal display device of claim 1 , wherein
the first substrate includes a first switching element and a second switching element,
the first switching element is electrically connected to the first pixel electrode, and
the second switching element is electrically connected to the second pixel electrode.
10. The liquid crystal display device of claim 1 , wherein
the stacked layer body is in an electrically floating state.