Display device

Patent metadata

Field	Value
Publication number	US-RE48929-E
Application number	US-201815883950-A
Country	US
Kind code	E1
Filing date	Jan 30, 2018
Priority date	Mar 27, 2013
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A display device includes a first substrate, a second substrate, and a plurality of light emitting sections. The first substrate includes a first surface and a second surface which faces the first surface. The second substrate is arranged to face the first substrate, and is configured with a first surface which faces the second surface of the first substrate, and a second surface which faces the first surface. The plurality of light emitting sections is provided on the second surface of the first substrate while being separated from the second substrate. A light transmission suppression layer on which a light transmission section to transmit light from light emitting sections is provided is formed on the second surface of the second substrate in correspondence to each light emitting section. An anti-reflection layer is formed in the light transmission section.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate that includes a first surface and a second surface;
a second substrate on the first substrate, the second substrate having (a) a first surface which faces the second surface of the first substrate, and (b) a second surface which faces away from the first surface of the second substrate; and
a plurality of light emitting sections on the second surface of the first substrate,;
a light transmission suppression layer on the second surface of the second substrate,;
a light non-transmission section layer on the first surface of the second substrate,; and
an anti-reflection layer on the second surface of the second substrate,
wherein,
the light transmission suppression layer has a first light transmission section that transmits light from a corresponding light emitting section of the plurality of light emitting sections,
the light transmission suppression layer tapers in thickness as the light transmission suppression layer approaches the first light transmission section,
the light non-transmission section layer has a second light transmission section that transmits light from the corresponding light emitting section,
the second light transmission section is between the first light transmission section and the corresponding light emitting section, and
an area of the second light transmission section is different in size than an area of the first light transmission section.

2. The display device according to claim 1 , wherein the light transmission suppression layer includes an anti-reflection function.

3. The display device according to claim 1 , wherein the anti-reflection layer is between the light transmission suppression layer and the second substrate.

4. The display device according to claim 1 , wherein the anti-reflection layer covers the light transmission suppression layer.

5. The display device according to claim 1 , wherein the light transmission suppression layer includes patterns.

6. The display device according to claim 5 , wherein a pattern formation pitch of the patterns is one of an integer multiple, an equivalent multiple, or an integer fraction of a light emitting section arrangement pitch of the plurality of light emitting sections.

7. The display device according to claim 1 , wherein the light transmission suppression layer tapers in thickness as the light transmission layer approaches the light transmission section.

8. The display device according to clam 1 , wherein a relationship of tan(sin −1 (1/n 1 ))≤(D 1 −D 0 )/(2L 1 )≤2 is satisfied when (a) a shape of the first light transmission section in plan view is a circle with a diameter D 1 , (b) a shape of the a light emitting section of the plurality of light emitting sections in plan view is a circle with a diameter D 0 , (c) a distance from a top face of the light emitting section to the first light transmission section is L 1 , and (d) an average refractive index of a light path from the light emitting section to the light transmission suppression layer provided with the first light transmission section is n 1 .

9. The display device according to claim 1 , wherein the area of the second light transmission section is smaller than the area of the first light transmission section.

10. The display device according to claim 9 , wherein a relationship of tan(sin −1 (1/n 1 ))≤(D 2 −D 0 )/(2L 2 )≤2 is satisfied when (a) a shape of the second light transmission section in plan view is a circle with a diameter D 2 , (b) a shape of the a light emitting section of the plurality of light emitting sections in plan view is a circle with a diameter D 0 , (c) a distance from a top face of the light emitting section to the second light transmission section is L 2 , and (d) an average refractive index of a light path from the light emitting section to the light non-transmission section layer provided with the second light transmission section is n 2 .

11. A display device, comprising:
a first substrate that includes a first surface and a second surface;
a second substrate having (a) a first surface which faces the second surface of the first substrate, and (b) a second surface which is opposite to the first surface of the second substrate; and
a plurality of light emitting sections on the second surface of the first substrate,
wherein,
a light transmission suppression layer, provided with a first light transmission section which transmits light from the plurality of light emitting sections, is on the second surface of the second substrate in correspondence to each light emitting section, and
the light transmission suppression layer tapers in thickness as the light transmission suppression layer approaches the first light transmission section,
a light non-transmission section layer, provided with a second light transmission section which transmits light from the a light emitting section of the plurality of light emitting sections, is on the first surface of the second substrate, and
an area of the second light transmission section is smaller than an area of the first light transmission section.

12. The display device according to claim 11 , wherein the light transmission suppression layer includes an anti-reflection function.

13. The display device according to claim 11 , wherein light transmission suppression layer includes patterns.

14. The display device according to claim 13 , wherein a pattern formation pitch of the patterns is one of an integer multiple, an equivalent multiple, or an integer fraction of a light emitting section arrangement pitch of the plurality of light emitting sections.

15. The display device according to claim 11 , wherein the light transmission suppression layer tapers in thickness as the light transmission layer approaches the first light transmission section.

16. The display device according to claim 11 , wherein a relationship of tan(sin −1 (1/n 1 ))≤(D 1 −D 0 )/(2L 1 )≤2 is satisfied when (a) a shape of the first light transmission section in plan view is a circle with a diameter D 1 , (b) a shape of the light emitting section of the plurality of light emitting sections in plan view is a circle with a diameter D 0 , (c) a distance from a top face of the light emitting section to the first light transmission section is L 1 , and (d) an average refractive index of a light path from the light emitting section to the light transmission suppression layer provided with the first light transmission section is n 1 .

17. The display device according to claim 16 , wherein a relationship of tan(sin −1 (1/n 2 ))≤(D 2 −D 0 )/(2L 2 )≤2 is satisfied when (a) a shape of the second light transmission section in plan view is a circle with a diameter D 2 , (b) a the shape of the-light the light emitting section in plan view is a the circle with a the diameter D 0 , (c) a distance from a the top face of the light emitting section to the second light transmission section is L 2 , and (d) an average refractive index of a light path from the light emitting section to the light non-transmission section layer provided with the second light transmission section is n 2 .

18. The display device according to claim 1 , wherein each of the plurality of light emitting sections comprises a light emitting diode.

19. The display device according to claim 18 , wherein each of the plurality of light emitting sections comprises a plurality of the light emitting diodes which are arranged in a straight line.

20. A tiling-type display device, comprising:
a plurality of the display device

Assignees

• Sony Semiconductor Solutions Corp

Inventors

• Tomoda Katsuhiro
• Takagishi Toshiya
• Kobayashi Izushi
• Fujii Masaru
• Terahara Hiroshi
• Doi Masato
• Kadota Hisashi

Classifications

• G02F1/133 Primary

  Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements (arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36) · CPC title

• G02F2201/14

  asymmetric · CPC title

• H01L2924/0002

  Electricity · mapped topic