| 主权项 |
1. A display device comprising:
a plurality of display units arranged in an array, each display unit of the plurality of display units comprising:
a display panel comprising a display surface configured for displaying an image; anda frame located adjacent to at least one edge of the display surface; anda light guide unit comprising:
a lower light guide located above the plurality of display units, the lower light guide comprising a plurality of first gratings, wherein each grating of the plurality of first gratings corresponds to a side of one of the plurality of display units and is configured to refract light emitted from the display surface towards a corresponding side of the display unit; andan upper light guide located above the lower light guide and comprising a plurality of second gratings, wherein each grating of the plurality of second gratings corresponds to a corresponding one of the plurality of first gratings and is configured to reversely refract light transmitted through the first grating towards a center of the display unit;wherein the display units are liquid crystal display units; and wherein the first grating comprises a plurality of first prisms facing the upper light guide, each first prism comprising a first prism surface tilted relative to the display surface, and a second prism surface connected to the first prism surface, along a direction from the corresponding side of the display unit to a center of the display unit, angles formed between the first prism surface and the display surface gradually decrease. |
