Display device

Patent metadata

Field	Value
Publication number	US-11022728-B2
Application number	US-201816499240-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Mar 30, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

In a display device in which a light shielding member having an opening formed in an image display surface of a display is arranged, occurrence of moire is prevented. A width (W1Y) of a first opening (OP 1 ) in a first light shielding member ( 13 ) of a display ( 10 ) and a width (W2Y) of a second opening (OP 2 ) of a second light shielding member ( 20 ) on a surface of the display ( 10 ) are set so that (W1Y−W2Y)/2>ΔLY is established.

First claim

The invention claimed is:

1. A display device comprising:
a first tight shielding member that has, in an image display region of a display, light output regions of pixels arranged side by side in an X-axis direction and a Y-axis direction Which are orthogonal to each other, and first non-openings that surround the light output regions in a lattice shape; and
a second light shielding member that has openings arranged so as to cover the image display region and formed side by side in the Y-axis direction, and second non-openings provided between the openings, wherein
when a point apart from a center of the image display region by a specific distance is an observation point,
a width of each of the light output regions in the Y-axis direction is W1Y, a width of each of the openings in the Y-axis direction is W2Y, a plane including a surface of each of the first non-openings, which is farther from the observation point, is a first plane, and a plane including a surface of each of the second non-openings, which is farther from the observation point, is a second plane,
in a sectional surface of the first light shielding member and the second light shielding member, which is taken along the Y-axis direction,
the second non-opening covers a whole of a surface of the first non-opening, which is closer to the observation point, and
when a point where a straight line that extends from the observation point to the first plane and the second plane passes through a point Y1 which is an intersection point of a side wall, which is farther from the center of the image display region among side walls that constitute a target opening to be focused on among the openings, and the second plane and crosses the first plane is a point Y2,
a point where a perpendicular line that extends from the point Y1 perpendicularly to the first plane crosses the first plane is a point Y3, and
a distance between the point Y2 and the point Y3 is ΔLY,
(W1Y-W2Y)/2>ΔLY is established.

2. The display device according to claim 1 , wherein the openings extend so as to cross the plurality of light output regions in the X-axis direction.

3. The display device according to claim 1 , wherein
the openings are formed side by side in the X-axis direction, and
when a width of each of the light output regions in the X-axis direction is W1X and a width of each of the openings in the X-axis direction is W2X, and
in a sectional surface of the first light shielding member and the second light shielding member, which is taken along the X-axis direction,
a point where a straight line that extends from the observation point to the first plane and the second plane passes through a point X1 which is an intersection point of a side wall, which is farther from the center of the image display region among side walls that constitute a target opening to be focused on among the openings, and the second plane and crosses the first plane is a point X2,
a point where a perpendicular line that extends from the point X1 perpendicularly to the first plane crosses the first plane is a point X3, and
a distance between the point X2 and the point X3 is ΔLX,
(W1X-W2X)/2>ΔLX is established.

4. The display device according to claim 1 , wherein
the openings are formed side by side in the X-axis direction, and
when a width of each of the first non-openings in the X-axis direction is P1X, a width of each of the second non-openings in the X-axis direction is P2X, a plane including a surface of the first non-opening, which is closer to the observation point, is a third plane, and a plane including a surface of the second non-opening, which is closer to the observation point, is a fourth plane,
in a sectional surface of the first light shielding member and the second light shielding member, which is taken along the X-axis direction,
the second non-opening covers a part of the surface of the first non-opening, which is closer to the observation point, and
when a point where a straight line that extends from the observation point to the third plane and the fourth plane passes through a point X1 which is an intersection point of a side wall, which is farther from the center of the image display region among side walls that constitute a target first non-opening to be focused on among the first non-openings, and the third plane and crosses the fourth plane is a point X2,
a point where a perpendicular line that extends from the point X2 perpendicularly to the third plane crosses the third plane is a point X3, and a distance between the point X1 and the point X3 is ΔLBX,
(P1X P2X)/2>ΔLBX is established.

5. A display device comprising:
a first light shielding member that has, in an image display region of a display, light output regions of pixels arranged side by side in an X-axis direction and a Y-axis direction Which are orthogonal to each other, and first non-openings that surround the light output regions in a lattice shape; and
a second light shielding member that has openings arranged so as to cover the image display region and formed side by side in the Y-axis direction, and second non-openings provided between the openings, wherein
when a point apart from a center of the image display region by a specific distance is an observation point,
a width of each of the first non-openings in the Y-axis direction is P1Y, a width of each of the second non-openings in the Y-axis direction is P2Y, a plane including a surface of the first non-opening, which is closer to the observation point, is a third plane, and a plane including a surface of the second non-opening, which is closer to the observation point, is a fourth plane,
in a sectional surface of the first light shielding member and the second light shielding member, which is taken along the Y-axis direction,
the second non-opening covers a part of the surface of the first non-opening, which is closer to the observation point, and
when a point where a straight line that extends from the observation point to the third plane and the fourth plane passes through a point Y1 which is an intersection point of a side wall, which is farther from the center of the image display region among side walls that constitute a target first non-opening to be focused on among the first non-openings, and the third plane and crosses the fourth plane is a point Y2,
a point where a perpendicular line that extends from the point Y2 perpendicularly to the third plane crosses the third plane is a point Y3, and a distance between the point Y1 and the point Y3 is ΔLBY,
(P1Y-P2Y)/2>ΔLBY is established.

6. The display device according to claim 5 , wherein
the openings are formed side by side in the X-axis direction, and
when a width of each of the first non-openings in the X-axis direction is PIX and a width of each of the second non-openings in the X-axis direction is P2X, a plane including a surface of the first non-opening, which is closer to the observation point, is a third plane, and a plane including a surface of the second non-opening, which is closer to the observation point, is a fourth plane,
in a sectional surface of the first light shielding member and the second light shielding member, which is taken along the X-axis direction,
the second non-opening covers a part of the surface of the first-non opening, which is closer to the observation point, and
when a point where a straight line that extends from the observation point to the third plane and the fourth plane passes through a point X1 which is an intersection point of a side wall, which is farther from the center of the image display region among side walls that constitute a target first non-opening to be focused on among the first non-openings, and the third plane and crosses the fourth plane is a point X2,
a point where a perpendicular line that extends from t

Assignees

• Sharp Kk

Inventors

• Kuki Hikaru
• Araki Ryoh
• Kawaguchi Tsuyoshi

Classifications

• G02B30/32 Primary

  characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size · CPC title

• G02B5/003 Primary

  Light absorbing elements · CPC title

• G02B27/0018

  with means for preventing ghost images (anti-reflection coatings G02B1/11) · CPC title

• G09F9/30

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title