The present disclosure relates to a display.
Proposals have been previously made for a large multi-display in which a plurality of display panels is arranged (for example, refer to Patent Literature 1).
Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2014-119562
In such a multi-display, boundary portions between a plurality of arranged display panels are often visually recognized as dark lines.
Therefore, it is desirable to provide a display that makes it possible to display a good image in which dark lines are less likely to be recognized by a viewer.
A first display according to an embodiment of the present disclosure includes a first display section, a second display section, and a light guide member. The first display section has a first display surface including a first middle region and a curved first end region and outputting first image light. The second display section has a second display surface including a second middle region and a curved second end region and outputting second image light. The second display surface is adjacent to the first display section via a gap. The light guide member is provided on the gap and has a first entering surface where the first image light from the first end region of the first display surface enters, a first outgoing surface that outputs the first image light from the first entering surface, a second entering surface where the second image light from the second end region of the second display surface enters, and a second outgoing surface that outputs the second image light from the second entering surface.
A second display according to an embodiment of the present disclosure includes a first display section, a second display section, and an optical film. The first display section has a first display surface including a first middle region and a curved first end region and outputting first image light. The second display section has a second display surface including a second middle region and a curved second end region and outputting second image light. The second display surface is adjacent to the first display surface via a gap. The optical film is provided to cover, over the gap, both the first middle region of the first display surface and the second middle region of the second display surface.
The display according to the embodiment of the present disclosure makes it possible to display a good image in which dark lines are less likely to be recognized by a viewer.
Note that effects of the present disclosure are not limited to the effects described above, and may include any of effects described below.
In the following, embodiments of the present disclosure are described in detail with reference to the drawings. Note that the description is made in the following order.
An example of a display in which a fiber optical plate (FOP) is disposed on curved portions near boundaries between a plurality of flexible display panels
2. Second Embodiment and Modification Examples thereof
An example of a display in which optical films are attached to a front surface of the plurality of flexible display panels and the FOP disposed near the boundaries between the flexible display panels
The display 1 includes a plurality of display panels P1 to P3 coupled and integrated at boundary portions G1 and G2 via fiber optical plates (FOPs) 20. The display panel P1 and the display panel P2 are specific examples that respectively correspond to a “first display member” and a “second display member” of the present disclosure. Furthermore, the boundary portions G1 and G2 are specific examples that correspond to a “gap” of the present disclosure.
Note that, in the present specification, the display panels P1 to P3 may be collectively described as display panels P, and the boundary portions G1 and G2 may be collectively described as boundary portions G. Moreover, in the present embodiment, three display panels P are coupled, but the number is not limited in the present technology.
The display panels P1 to P3 are so-called flexible displays in a form of a sheet having flexibility. The display panels P1 to P3 are provided with a display device layer including a plurality of pixels using a self-outputting device or a display device. For example, the self-outputting device may be an organic EL (Electro Luminescence) device and the display device may be a liquid crystal device. Each of the display panels P1 to P3 includes display sections S1 to S3 that respectively output pieces of image light L1 to L3, and peripheral parts F1 to F3 that are provided with wiring lines and the like for supplying power to the display sections S1 to S3 and transmitting and receiving signals.
Note that, in the present specification, the pieces of image light L1 to L3 may be collectively described as image light L, the display sections S1 to S3 may be collectively described as display sections S, and the peripheral parts F1 to F3 may be collectively described as peripheral parts F.
The display section S1 includes a pair of end regions SL1 and SR1, and a middle region SC1 that is interposed between the end region SL1 and the end region SR1 in a direction in which the display panels P are arranged, that is, in an X-axis direction. A surface of the middle region SC1 and a surface of the end region SR1 are planes extending in the X-axis direction and a Y-axis direction. On the other hand, a surface of the end region SL1 includes a curved surface that is parallel to the Y-axis direction, but is so curved that a displacement amount in a Z-axis direction increases as a distance from the middle region SC1 increases.
The display section S2 includes a pair of end regions SL2 and SR2, and a middle region SC2 that is interposed between the end region SL2 and the end region SR2 in the X-axis direction. A surface of the middle region SC2 is a plane extending in the X-axis direction and the Y-axis direction. Each surface of the end region SL2 and the end region SR2 includes a curved surface that is parallel to the Y-axis direction, but is so curved that the displacement amount in the Z-axis direction increases as a distance from the middle region SC2 increases.
Similarly, the display section S3 includes a pair of end regions SL3 and SR3, and a middle region SC3 that is interposed between the end region SL3 and the end region SR3 in the X-axis direction. A surface of the middle region SC3 and a surface of the end region SR1 are planes extending in the X-axis direction and the Y-axis direction. On the other hand, a surface of the end region SL3 includes a curved surface that is parallel to the Y-axis direction, but is so curved that the displacement amount in the Z-axis direction increases as a distance from the middle region SC3 increases.
In the display 1, an FOP 20A coupling the display panel P1 and the display panel P2 is disposed at the boundary portion G1, and an FOP 20B coupling the display panel P2 and the display panel P3 is disposed at the boundary portion G2. Each of the FOP 20A and the FOP 20B is a block-shaped optical member in which a plurality of optical fibers 26 (described later) including quartz glass or transparent resin as a main constituent material is bundled and integrated. The FOP 20A and the FOP 20B have substantially the same configuration. The FOP 20A and the FOP 20B propagate the image light L having entered an entering surface to an outgoing surface that is different from the entering surface, and output the image light L. The entering surface is, in other words, a first entering surface 22A and a second entering surface 22B described later. The outgoing surface is, in other words, a first outgoing surface 23A and a second outgoing surface 23B described later.
Note that, in the present specification, the FOP 20A and the FOP 20B may be collectively described as FOPs 20.
As illustrated in
The first light guide section 21A of the FOP 20A has the first entering surface 22A and the first outgoing surface 23A. The first entering surface 22A of the FOP 20A faces the end region SL1, and is a surface where the image light L1 from the end region SL1 enters. The first entering surface 22A of the FOP 20A is curved along the surface of the end region SL1 of the display panel P1. The first entering surface 22A of the FOP 20A is preferably joined to the surface of the end region SL1 of the display panel P1 with a transparent adhesive or the like. The first outgoing surface 23A of the FOP 20A is a surface that outputs the image light L1 having entered the first entering surface 22A to the outside of the first light guide section 21A. Similarly, the first light guide section 21A of the FOP 20B also has the first entering surface 22A and the first outgoing surface 23A. The first entering surface 22A of the FOP 20B faces the end region SL2, and is a surface where the image light L2 from the end region SL2 enters. The first entering surface 22A of the FOP 20B is curved along the surface of the end region SL2 of the display panel P2. The first entering surface 22A of the FOP 20B is preferably joined to the surface of the end region SL2 of the display panel P2 with the transparent adhesive or the like. The first outgoing surface 23A of the FOP 20B is a surface that outputs the image light L2 having entered the first entering surface 22A to the outside of the first light guide section 21A.
The second light guide section 21B of the FOP 20A has the second entering surface 22B and the second outgoing surface 23B. The second entering surface 22B of the FOP 20A is a surface where the image light L2 from the end region SR2 enters. The second entering surface 22B of the FOP 20A faces the end region SR2 of the display panel P2, and is curved along the surface of the end region SR2. The second entering surface 22B of the FOP 20A is preferably joined to the surface of the end region SR2 of the display panel P2 with the transparent adhesive or the like. The second outgoing surface 23B of the FOP 20A is a surface that outputs the image light L2 having entered the second entering surface 22B to the outside of the second light guide section 21B. Similarly, the second light guide section 21B of the FOP 20B also has the second entering surface 22B and the second outgoing surface 23B. The second entering surface 22B of the FOP 20B faces the end region SR3, and is a surface where the image light L3 from the end region SR3 enters. The second entering surface 22B of the FOP 20B is curved along the surface of the end region SR3 of the display panel P3. The second entering surface 22B of the FOP 20B is preferably joined to the surface of the end region SR3 of the display panel P3 with the transparent adhesive or the like. The second outgoing surface 23B of the FOP 20B is a surface that outputs the image light L3 having entered the second entering surface 22B to the outside of the second light guide section 21B.
The surface of the middle region SC1 of the display section S1, the surface of the middle region SC2 of the display section S2, the first outgoing surface 23A and the second outgoing surface 23B of the FOP 20A, the surface of the middle region SC3 of the display section S3, and the first outgoing surface 23A and the second outgoing surface 23B of the FOP 20B integrally form a coupled display surface SS.
As described above, because the display 1 according to the present embodiment couples and integrates the plurality of display panels P1 to P3 at the boundary portions G1 and G2, it is possible to form a large display surface as a whole. In particular, because the FOPs 20A and 20B as the light guide members are disposed at the boundary portions G1 and G2, the pieces of image light L1 to L3 outputted from the plurality of display panels P1 to P3 are coupled to each other without any gap. Specifically, as illustrated in
Furthermore, the present embodiment includes the FOP 20 as the light guide member. Because it is possible to transmit a display image on the display section for each region of a pixel size level by the FOP 20, it is possible to provide an image with better image quality to the viewer. On the other hand, a distance from a viewable display surface (viewing distance) is limited if a lens array in which microlenses are arranged, a Fresnel lens, or the like, for example, is used. One reason for this is that an image failure can occur depending on the distance from the display surface (viewing distance). In addition, if the lens array, the Fresnel lens, or the like is used, when viewed from an angle inclined from a direction perpendicular to the display surface, the image quality of the viewed image can be degraded. However, in the case of the FOP, such deterioration in image quality is less likely to occur.
Moreover, because the present embodiment uses a so-called flexible display in a form of a sheet having flexibility as the display panels P, after the display 1 is manufactured in a factory, it is possible to ship and transport the entire display 1 in a wound state. For this reason, the whole dimension at the time of transportation is reduced, allowing for the excellent transportation performance. Furthermore, because the plurality of display panels P is tiled at predetermined positions in the manufacturing stage in the factory and the plurality of display panels P is coupled to each other, it is possible to perform various adjustments such as brightness adjustment and color unevenness adjustment between the plurality of display panels P before shipment, making it possible to improve the display quality of the entire display 1. Therefore, it is possible to simplify or omit adjustment work of the image quality at a place of installation.
As illustrated in
In a case where the viewing angle diffusion film is used as the optical film 30, the optical film 30 functions to convert light distribution of the image light L outputted from the coupled display surface SS. Specifically, the optical film 30 functions to change a travel direction of the image light L while transmitting the image light L that directly enters from the middle regions SC of the display panels P or enters via the FOP 20, and functions to convert the light distribution of the image light L to achieve a uniform luminance distribution when viewed from a front direction, for example. The optical film 30 preferably has a refractive index lower than the refractive index of the core 261 of the optical fibers 26 (e.g., about 1.8) and higher than 1. One reason for this is that a transmission loss when the image light L outputted from the first outgoing surface 23A and the second outgoing surface 23B of the FOP 20 enters the optical film 30 is reduced and high transmission efficiency is secured. However, in a case where priority is given to expanding the viewing angle, the optical film 30 having a higher refractive index than the refractive index of the core 261 of the optical fibers 26 may be used.
The display 2A of the present embodiment achieves similar effects to those of the display 1 of the first embodiment as described above. That is, because the plurality of display panels P1 to P3 is coupled and integrated at the boundary portions G1 and G2, the large display surface is formed as a whole. In particular, because the FOPs 20A and 20B as the light guide members are arranged at the boundary portions G1 and G2, the pieces of image light L1 to L3 outputted from the plurality of display panels P1 to P3 are coupled to each other without gaps. In addition, the display 2A of the present embodiment provides the optical film 30 on a front surface of the FOP 20 provided on the plurality of display panels P and the boundary portions G1 and G2 therebetween. This results in reduction of difference in luminance and chromaticity between the image light L from the middle regions SC of the display section S and the image light L from the end regions SR and SL of the plurality of display panels P, and reduction of variation in image quality of the entire image displayed on the coupled display surface SS. Furthermore, the optical film 30 functions as a protective film that protects the coupled display surface SS from external force, making it possible to prevent the function of the display 2A from being damaged during transportation, installation, or after installation. In addition to the above, the optical film 30 has flexibility, which does not hinder the winding of the display 2A. Providing the optical film 30 makes it possible to improve mechanical strength of the entire display 2A, which prevents the wound display 2 from being crushed or bent, and makes it possible to maintain quality. Furthermore, providing the optical film 30 makes it possible to suppress occurrence of wrinkles and flexure in the middle regions SC of the display sections S, and makes it possible to expect better image display.
Note that it is possible to bond the first outgoing surface 23A and the second outgoing surface 23B of the FOP 20 to the optical film 30 by adhesion with an adhesive such as a transparent resin. Alternatively, the optical film 30 may be formed by applying a liquid on the coupled display surface SS.
As illustrated in
The display 2B of the present modification example also forms a large display surface as a whole because the plurality of display panels P1 to P3 is coupled and integrated by the optical film 30. In the display 2B, the end regions SL and SR of the display sections S are curved to cause the gap between the adjacent display sections S to be smaller. Therefore, the gaps between the pieces of image light L1 to L3 outputted from the display panels P1 to P3 are smaller than a case where the end regions SL and SR of the display sections S are not curved. Furthermore, because the display 2B has a configuration in which the FOPs 20A and 20B as the light guide members are not disposed at the boundary portions G1 and G2, the display 2B is advantageous in terms of an overall weight saving and a reduction in thickness as compared with the display 2A. However, because the display 2B does not have the FOP 20, it is preferable that the pieces of image light L outputted from the end regions SL and SR curved with respect to the flat middle regions SC be subjected to image processing to achieve an image having no distortion at a position of the coupled display surface SS along the optical film 30.
As illustrated in
Because the display 2C of the present modification example provides the transparent support substrates 40 on the display surfaces of the middle regions SC, it is possible to suppress occurrence of wrinkles and flexure in the middle regions SC of the display sections S in the manufacturing stage or at the time of installation, and makes it possible to expect better image display. Furthermore, it is also possible to protect the end of the FOP 20. It is possible to form the transparent support substrates 40 from a transparent resin having flexibility. In that case, it is possible to wind the display 1 and secure transportability. Note that the transparent support substrates 40 may be formed of glass plates.
As described above, the present disclosure has been described with reference to some embodiments and modification examples, but the present disclosure is not limited to the above-described embodiments and the like, and various modifications are possible. For example, the FOP 20 as the light guide member in the display 1 according to the above-described first embodiment has the optical fibers 26 including the core 261 whose optical axis is curved, but the present disclosure is not limited thereto. For example, the display may include an FOP 20C in which the image light L travels straight in a direction orthogonal to the coupled display surface SS as in a display 3A illustrated in
Furthermore, the light guide member of the present disclosure may enlarge and propagate the image light L that has entered the entering surfaces (the first entering surface 22A and the second entering surface 22B) before reaching the outgoing surfaces (the first outgoing surface 23A and the second outgoing surface 23B), and may output the enlarged image light L from the outgoing surfaces, for example, as in an FOP 20E as the light guide member illustrated in
Furthermore, in the above-described embodiments, etc., the end regions SL and SR of the display sections S are gradually curved to have an angle within a range of 0° to less than 90° with respect to a direction in which the middle regions SC extends, but the present disclosure is not limited thereto. For example, as in a display 4A illustrated in
Furthermore, the display of the present disclosure may provide a light shielding film 50 that covers a surface opposite to the first outgoing surface 23A and the second outgoing surface 23B of the FOP 20 as in a display 5 illustrated in
Furthermore, although the above-described embodiments, etc., illustrate the cases where the shape and size of the plurality of display panels P and the shape and size of the plurality of FOPs 20 are substantially the same, the present disclosure is not limited thereto. In the present disclosure, some or all of the shapes and sizes of the plurality of display members may be different, and some or all of the shapes and sizes of the plurality of light guide members may be different.
Moreover, it is to be noted that effects described herein are merely exemplified. Effects of the present disclosure are not limited to the effects described herein and may include other effects than the effects described herein. Furthermore, the present technology may include the following configurations.
(1)
A display including:
a first display member including a first display section, the first display section having a first middle region and a curved first end region and outputting first image light;
a second display member including a second display section, the second display section having a second middle region and a curved second end region and outputting second image light, the second display section being adjacent to the first display section via a gap; and
a light guide member that is provided on the gap and has
The display according to (1), in which the light guide member includes:
a first light guide section including bundled and integrated first optical fibers, the first optical fibers each having a first core and a first cladding, the first core guiding the first image light from the first entering surface to the first outgoing surface, the first cladding surrounding the first core; and
a second light guide section including bundled and integrated second optical fibers, the second optical fibers each having a second core and a second cladding, the second core guiding the second image light from the second entering surface to the second outgoing surface, the second cladding surrounding the second core.
(3)
The display according to (1) or (2), in which the light guide member
enlarges the first image light that has entered the first entering surface and outputs the enlarged first image light from the first outgoing surface, and
enlarges the second image light that has entered the second entering surface and outputs the enlarged second image light from the second outgoing surface.
(4)
The display according to any one of (1) to (3), in which the first display section and the second display section include flexible displays.
(5)
The display according to any one of (1) to (4), in which the first middle region of the first display section, the second middle region of the second display section, and the first outgoing surface and the second outgoing surface of the light guide member integrally form a coupled display surface.
(6)
The display according to (5), further including an optical film that covers the coupled display surface.
(7)
The display according to any one of (1) to (6), further including at least one of a first transparent plate that covers the first middle region of the first display section or a second transparent plate that covers the second middle region of the second display section.
(8)
A display including:
a first display member including a first display section, the first display section having a first middle region and a curved first end region and outputting first image light;
a second display member including a second display section, the second display section having a second middle region and a curved second end region and outputting second image light, the second display section being adjacent to the first display section via a gap; and
an optical film that covers, over the gap, both the first middle region of the first display section and the second middle region of the second display section.
The present application claims the benefit of Japanese Priority Patent Application JP2018-63869 filed with the Japan Patent Office on Mar. 29, 2018, the entire contents of which are incorporated herein by reference.
It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.
Number | Date | Country | Kind |
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2018-063869 | Mar 2018 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2019/005227 | 2/14/2019 | WO | 00 |