Liquid crystal display apparatus and electronic apparatus
View Patent ↗A liquid crystal display apparatus includes a viewing-angle controlling liquid crystal layer that, when in a horizontal alignment state, exhibits a slow axis that is parallel to a polarized-light transmitting or absorbing axis of a polarizing layer that is disposed opposite to the displaying liquid crystal layer from the viewing-angle controlling liquid crystal layer.
1. A liquid crystal display apparatus comprising:
a displaying liquid crystal layer;
a displaying electric field applying structure that applies a displaying electric field to the displaying liquid crystal layer;
a pair of polarizing layers that sandwich the displaying liquid crystal layer therebetween;
a viewing-angle controlling liquid crystal layer disposed between one of the polarizing layers and the displaying liquid crystal layer, the viewing-angle controlling liquid crystal layer changing between substantial horizontal and vertical alignment states, the viewing-angle controlling liquid crystal layer when in the horizontal alignment state exhibiting a slow axis that is parallel to a polarized-light transmitting or absorbing axis of the polarizing layer that is disposed opposite to the displaying liquid crystal layer from the viewing-angle controlling liquid crystal layer; and
a viewing-angle controlling electric field applying structure that applies a viewing-angle controlling electric field to the viewing-angle controlling liquid crystal layer.
2. The liquid crystal display apparatus according to claim 1 , wherein the viewing-angle controlling liquid crystal layer is in a horizontal alignment state when no electric field is applied by the viewing-angle controlling electric field applying structure, and the viewing-angle controlling liquid crystal layer is in a vertical alignment state when an electric field is applied.
3. The liquid crystal display apparatus according to claim 1 , wherein the viewing-angle controlling liquid crystal layer is in a vertical alignment state when no electric field is applied by the viewing-angle controlling electric field applying structure, and the viewing-angle controlling liquid crystal layer is in a horizontal alignment state when an electric field is applied.
4. The liquid crystal display apparatus according to claim 3 , wherein an alignment azimuth angle in the horizontal alignment state of the viewing-angle controlling liquid crystal layer is defined as four directions which are substantially parallel to the polarized-light transmitting and absorbing axes.
5. The liquid crystal display apparatus according to claim 1 , wherein phase difference layers are disposed to be adjacent to both sides of the displaying liquid crystal layer.
6. The liquid crystal display apparatus according to claim 1 , wherein the slow axis of the viewing-angle controlling liquid crystal layer is defined to be slanted when a display screen is seen from a front surface thereof.
7. An electronic apparatus which the liquid crystal display apparatus according to any one of claim 1 is built in.
8. A liquid crystal display apparatus comprising:
a displaying liquid crystal layer;
a displaying electric field applying structure that applies a displaying electric field to the displaying liquid crystal layer;
a pair of polarizing layers that sandwich the displaying liquid crystal layer therebetween;
a viewing-angle controlling liquid crystal layer disposed between one of the polarizing layers and the displaying liquid crystal layer, the viewing-angle controlling liquid crystal layer changing between substantial horizontal and vertical alignment states, the viewing-angle controlling liquid crystal layer when in the horizontal alignment state exhibiting a slow axis that is parallel to a polarized-light transmitting or absorbing axis of the polarizing layer that is disposed opposite to the displaying liquid crystal layer from the viewing-angle controlling liquid crystal layer;
a viewing-angle controlling electric field applying structure that applies a viewing-angle controlling electric field to the viewing-angle controlling liquid crystal layer; and
phase difference layers are disposed to be adjacent to both sides of the displaying liquid crystal layer.
9. The liquid crystal display apparatus according to claim 8 , wherein the viewing-angle controlling liquid crystal layer is in a horizontal alignment state when no electric field is applied by the viewing-angle controlling electric field applying structure, and the viewing-angle controlling liquid crystal layer is in a vertical alignment state when an electric field is applied.
10. The liquid crystal display apparatus according to claim 8 , wherein the viewing-angle controlling liquid crystal layer is in a vertical alignment state when no electric field is applied by the viewing-angle controlling electric field applying structure, and the viewing-angle controlling liquid crystal layer is in a horizontal alignment state when an electric field is applied.
11. The liquid crystal display apparatus according to claim 10 , wherein an alignment azimuth angle in the horizontal alignment state of the viewing-angle controlling liquid crystal layer is defined as four directions which are substantially parallel to the polarized-light transmitting and absorbing axes.
12. The liquid crystal display apparatus according to claim 8 , wherein the slow axis of the viewing-angle controlling liquid crystal layer is defined to be slanted when a display screen is seen from a front surface thereof.
13. An electronic apparatus including the liquid crystal display apparatus according to claim 8 .