Lens array substrate, optoelectronic device, and electronic apparatus

Patent metadata

Field	Value
Publication number	US-10025135-B2
Application number	US-201514715760-A
Country	US
Kind code	B2
Filing date	May 19, 2015
Priority date	May 28, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A microlens array substrate includes a substrate, a first microlens that is disposed on a face of the substrate, a first light-transmissive layer that is disposed to cover the first microlens, a second microlens that is disposed on the intermediate layer and is arranged to overlap with the first microlens in a planar view, and a second light-transmissive layer that is disposed to cover the second microlens. A first flat portion is disposed between the first microlenses that neighbor each other at a vertex. A second flat portion is disposed between the second microlenses that neighbor each other at a vertex. The first flat portion and the second flat portion are arranged in order for at least a part of the first flat portion and a part of the second flat portion to overlap with each other in a planar view.

First claim

What is claimed is:

1. A lens array substrate comprising:
a substrate;
a plurality of first lenses that is disposed on a first face of the substrate, each first lens having a planar shape of a substantial polygon;
a first light-transmissive layer that is disposed to cover the plurality of first lenses;
a plurality of second lenses that is disposed on the first light-transmissive layer, each second lens having a planar shape of a substantial polygon; and
a second light-transmissive layer that is disposed to cover the plurality of second lenses,
wherein
two lenses among the plurality of first lenses are connected to each other, the two lenses neighboring each other with an edge of the substantial polygon interposed therebetween,
each of the plurality of first lenses overlaps with one corresponding lens among the plurality of second lenses,
a first flat portion is disposed between two lenses among the plurality of first lenses, the two lenses neighboring each other with a vertex of the substantial polygon interposed therebetween,
a second flat portion is disposed between two lenses among the plurality of second lenses, the two lenses neighboring each other with a vertex of the substantial polygon interposed therebetween,
the first flat portion is configured by a flat surface of the first face of the substrate,
the second flat portion is configured by a flat surface of the second light-transmissive layer that is substantially parallel to the first face of the substrate,
the first flat portion and the second flat portion are arranged in order for at least a part of the first flat portion and a part of the second flat portion to overlap with each other in a planar view, and
the extent of the second flat portion is greater than the extent of the first flat portion.

2. The lens array substrate according to claim 1 ,
wherein the angle between an inclined surface of an end portion of one lens among the plurality of first lenses and the first face of the substrate is less than the angle between an inclined surface of an end portion of one lens among the plurality of second lenses and the first face of the substrate.

3. An optoelectronic device comprising:
an element substrate that includes a switching element which is disposed in each of a plurality of pixels and a light-blocking portion which has an opening portion corresponding to each of the plurality of pixels and is disposed to overlap with the switching element in a planar view;
the lens array substrate according to claim 2 is arranged opposite the element substrate; and
an optoelectronic layer that is arranged between the element substrate and the lens array substrate,
wherein each of the plurality of first lenses and each of the plurality of second lenses are arranged to overlap with the corresponding opening portion in a planar view, and
the first flat portion and the second flat portion are arranged to overlap with the light-blocking portion in a planar view.

4. An optoelectronic device comprising:
an element substrate that includes a light-receiving element which is disposed in each of a plurality of pixels and a light-blocking portion which includes an opening portion corresponding to each of the plurality of pixels; and
the lens array substrate according to claim 2 is arranged opposite the element substrate,
wherein each of the plurality of first lenses and each of the plurality of second lenses are arranged to overlap with the corresponding light-receiving element and the corresponding opening portion in a planar view, and
the first flat portion and the second flat portion are arranged to overlap with the light-blocking portion in a planar view.

5. The lens array substrate according to claim 1 , further comprising:
a prism that is arranged on the opposite side of the plurality of second lenses from the substrate to overlap with the first flat portion and the second flat portion in a planar view.

6. The lens array substrate according to claim 5 ,
wherein the width of the prism in a first direction that is along the first face of the substrate is greater than the width of an overlapping part between the first flat portion and the second flat portion in a planar view in the first direction.

7. An optoelectronic device comprising:
an element substrate that includes a switching element which is disposed in each of a plurality of pixels and a light-blocking portion which has an opening portion corresponding to each of the plurality of pixels and is disposed to overlap with the switching element in a planar view;
the lens array substrate according to claim 5 is arranged opposite the element substrate; and
an optoelectronic layer that is arranged between the element substrate and the lens array substrate,
wherein each of the plurality of first lenses and each of the plurality of second lenses are arranged to overlap with the corresponding opening portion in a planar view, and
the first flat portion and the second flat portion are arranged to overlap with the light-blocking portion in a planar view.

8. An optoelectronic device comprising:
an element substrate that includes a switching element which is disposed in each of a plurality of pixels and a light-blocking portion which has an opening portion corresponding to each of the plurality of pixels and is disposed to overlap with the switching element in a planar view;
the lens array substrate according to claim 6 is arranged opposite the element substrate; and
an optoelectronic layer that is arranged between the element substrate and the lens array substrate,
wherein each of the plurality of first lenses and each of the plurality of second lenses are arranged to overlap with the corresponding opening portion in a planar view, and
the first flat portion and the second flat portion are arranged to overlap with the light-blocking portion in a planar view.

9. The lens array substrate according to claim 1 ,
wherein the plurality of first lenses is configured by a first lens layer that is arranged to fill a plurality of concave portions disposed on the first face of the substrate and has a different refractive index from the substrate, and
the plurality of second lenses is configured by a second lens layer that is arranged on the first light-transmissive layer, has a plurality of convex portions, and has a different refractive index from the second light-transmissive layer.

10. An optoelectronic device comprising:
an element substrate that includes a switching element which is disposed in each of a plurality of pixels and a light-blocking portion which has an opening portion corresponding to each of the plurality of pixels and is disposed to overlap with the switching element in a planar view;
the lens array substrate according to claim 9 is arranged opposite the element substrate; and
an optoelectronic layer that is arranged between the element substrate and the lens array substrate,
wherein each of the plurality of first lenses and each of the plurality of second lenses are arranged to overlap with the corresponding opening portion in a planar view, and
the first flat portion and the second flat portion are arranged to overlap with the light-blocking portion in a planar view.

11. An optoelectronic device comprising:
an element substrate that includes a switching element which is disposed in each of a plurality of pixels and a light-blocking portion which has an opening portion corresponding to each of the plurality of pixels and is disposed to overlap with the switching element in a planar view;
the lens array substrate according to claim 1 is arranged opposite the element substrate; and
an optoelectronic layer that is arranged betw

Assignees

• Seiko Epson Corp

Inventors

• Wakabayashi Junichi

Classifications

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02B3/0056

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• G02B3/0068

  arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements (G02B5/1885, G02B17/002, G02B30/27 take precedence) · CPC title

• G02B27/026

  and a display device, e.g. CRT, LCD, for adding markings or signs or to enhance the contrast of the viewed object · CPC title