DISPLAY APPARATUS AND PLANAR ILLUMINATION APPARATUS
First Claim
1. A display apparatus comprising:
- a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface;
light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; and
a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources such that a position of maximum luminance of light exiting from each of the transparent plates differs between the transparent plates.
2 Assignments
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Accused Products
Abstract
A display apparatus is provided which includes a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface, light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates, and a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources such that a position of maximum luminance of light exiting from each of the transparent plates differs between the transparent plates.
23 Citations
10 Claims
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1. A display apparatus comprising:
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a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface; light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; and a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources such that a position of maximum luminance of light exiting from each of the transparent plates differs between the transparent plates. - View Dependent Claims (2, 3, 4)
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5. A display apparatus comprising:
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a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface; light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources; and a control unit that performs lighting control of the light sources such that the light exiting through the exiting surface exits from one or a plurality of areas among a plurality of areas created by dividing the entire exiting surface into a plurality of sections.
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6. A display apparatus comprising:
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a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface; light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; and a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources, wherein a plurality of linear grooves is formed on one surface or both surfaces of each of the transparent plates in a same direction as a direction in which light from the light sources enters. - View Dependent Claims (7, 8)
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9. A display apparatus comprising:
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a plurality of transparent plates which allow entered light to pass therethrough and allow the light to exit through an exiting surface; light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; and a plurality of diffusion portions, each of which is formed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources such that a position of maximum luminance of light exiting from each of the transparent plates differs between the transparent plates, wherein the light sources are disposed facing each other to irradiate light onto two side end surfaces of each of the transparent plates in a facing relationship, and in each of the diffusion portions, a position of maximum luminance of light exiting from a corresponding transparent plate after light entering from a corresponding light source through one of two side end surfaces is diffused, differs from a position of maximum luminance of light exiting from the corresponding transparent plate after light entering from a corresponding light source through an other one of the two side end surfaces is diffused.
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10. A planar illumination apparatus comprising:
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a plurality of transparent plates which are disposed to be superimposed and which allow entered light to pass therethrough and allow the light to exit through an exiting surface; light sources provided for the respective transparent plates to irradiate light onto a side end surface of each of the transparent plates; and a plurality of diffusion portions, each of which is disposed on a surface of each of the transparent plates facing the exiting surface, and which diffuse light from the light sources such that a position of maximum luminance of light exiting from each of the transparent plates differs between the transparent plates.
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Specification