Display and electronic unit having particular optical laminate
View Patent ↗A display capable of obtaining high contrast and an electronic unit including the display are provided. The display includes: a liquid crystal display panel including a liquid crystal layer and a light reflective layer; and an optical laminate disposed on the liquid crystal display panel, in which the optical laminate includes a first retardation layer, a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel, the first retardation layer is a negative C-plate, and the second retardation layer is a λ/4 plate or a combination of a λ/4 plate and a λ/2 plate arranged in order from a side closer to the liquid crystal display panel.
1. A display comprising:
a liquid crystal display panel including a liquid crystal layer and a light reflective layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a first retardation layer, a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a negative C-plate, and
the second retardation layer is a λ/4 plate or a combination of a λ/4 plate and a λ/2 plate arranged in order from a side closer to the liquid crystal display panel.
2. The display according to claim 1 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
3. A display comprising:
a liquid crystal display panel including a liquid crystal layer and a light reflective layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a first retardation layer, a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a biaxial λ/4 plate having an Nz coefficient larger than 1, and
the second retardation layer is a λ/2 plate.
4. The display according to claim 3 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
5. A display comprising:
a liquid crystal display panel including a liquid crystal layer, a light reflective layer, and a first retardation layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a negative C-layer, and
the second retardation layer is a λ/4 plate or a combination of a λ/4 plate and a λ/2 plate arranged in order from a side closer to the liquid crystal display panel.
6. The display according to claim 5 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
7. A display comprising:
a liquid crystal display panel including a liquid crystal layer, a light reflective layer, and a first retardation layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a biaxial λ/4 layer having an Nz coefficient larger than 1, and
the second retardation layer is a λ/2 plate.
8. The display according to claim 7 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
9. An electronic unit including a display, the display comprising:
a liquid crystal display panel including a liquid crystal layer and a light reflective layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a first retardation layer, a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a negative C-plate, and
the second retardation layer is a λ/4 plate or a combination of a λ/4 plate and a λ/2 plate arranged in order from a side closer to the liquid crystal display panel.
10. The electronic unit according to claim 9 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
11. An electronic unit including a display, the display comprising:
a liquid crystal display panel including a liquid crystal layer and a light reflective layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a first retardation layer, a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a biaxial λ/4 plate having an Nz coefficient larger than 1, and
the second retardation layer is a λ/2 plate.
12. The electronic unit according to claim 11 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
13. An electronic unit including a display, the display comprising:
a liquid crystal display panel including a liquid crystal layer, a light reflective layer, and a first retardation layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a negative C-layer, and
the second retardation layer is a λ/4 plate or a combination of a λ/4 plate and a λ/2 plate arranged in order from a side closer to the liquid crystal display panel.
14. The electronic unit according to claim 13 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.
15. An electronic unit including a display, the display comprising:
a liquid crystal display panel including a liquid crystal layer, a light reflective layer, and a first retardation layer; and
an optical laminate disposed on the liquid crystal display panel,
wherein the optical laminate includes a light diffuser layer, a second retardation layer, and a polarization layer in order from a side closer to the liquid crystal display panel,
the first retardation layer is a biaxial λ/4 layer having an Nz coefficient larger than 1, and
the second retardation layer is a λ/2 plate.
16. The electronic unit according to claim 15 , wherein
the liquid crystal display panel is configured to allow long axes of liquid crystal molecules in the liquid crystal layer to be aligned in a direction parallel or substantially parallel to a normal to the liquid crystal display panel in black display.