19-11-2020 дата публикации
Номер: US20200363684A1
Принадлежит:
A prism sheet, a backlight module, a display and a preparation method of the prism sheet are provided. The prism sheet includes a base layer and a prism layer located on a surface of a first side of the base layer, holes are provided inside the base layer, so that light received from a second side of the base layer reaches the prism layer through the holes, and the first side of the base layer and the second side of the base layer are opposite to each other. 1. A prism sheet , comprising: a base layer and a prism layer on a surface of a first side of the base layer ,wherein holes are provided inside the base layer, so that light received from a second side of the base layer reaches the prism layer through the holes, and the first side of the base layer and the second side of the base layer are opposite to each other.2. The prism sheet according to claim 1 , wherein the prism layer comprises a plurality of prisms claim 1 , and at least one hole is provided at a position claim 1 , corresponding to each prism of the plurality of prisms claim 1 , in the base layer.3. The prism sheet according to wherein in a case where one hole is provided at the position claim 1 , corresponding to each prism claim 1 , in the base layer claim 1 , an end surface claim 1 , which is close to the prism layer claim 1 , of a hole corresponding to a prism coincides with a bottom surface of the prism.4. The prism sheet according to claim 3 , wherein the end surface claim 3 , which is close to the prism layer claim 3 , of the hole corresponding to the prism completely coincides with the bottom surface of the prism.5. The prism sheet according to wherein in the case where at least two holes are provided at the position claim 1 , corresponding to each prism claim 1 , in the base layer claim 1 , end surfaces claim 1 , which are close to the prism layer claim 1 , of at least two holes corresponding to a prism coincide with a bottom surface of the prism.6. The prism sheet according to claim 5 , ...
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