This application claims the benefit of Japanese Priority Patent Application JP 2013-155857 filed Jul. 26, 2013, the entire contents of which are incorporated herein by reference.
The present disclosure relates to a displaying medium and a displaying apparatus.
For example, JP 2011-75663A (hereinafter referred to as Patent Literature 1) discloses a displaying apparatus in which an electronic paper device which can be set to be transparent is arranged on the front face of a light-emitting display. Moreover, JP 2008-102660A (hereinafter referred to as Patent Literature 2) discloses a configuration in which an electronic paper device is included to be superimposed on a liquid crystal display.
While the configurations disclosed in Patent Literature 1 and Patent Literature 2 above allow output light from the light-emitting display to be outputted through the electronic paper device, the electronic paper device is difficult to be completely transparent. Hence, there is a problem that the brightness of the light emitted from the light-emitting display decreases when it passes through the electronic paper device.
Moreover, since a typical displaying apparatus has its displaying face black when the power is turned OFF, the displaying apparatus does not match surrounding furniture, walls or the like in a living space, this sometimes causing uncomfortable feeling. In particular, a large-sized displaying apparatus can cause significant uncomfortable feeling.
It is desirable to suppress a decrease of brightness in a configuration in which a displaying medium such as an electronic paper device is superimposed on a display that displays video to be adapted to the surrounding environment.
According to an embodiment of the present disclosure, there is provided a displaying medium including a displaying part configured to maintain displaying in accordance with an application state of voltage, and a plurality of light transmission regions provided adjacent to the displaying part, corresponding to positions of a plurality of light sources of a display which is arranged to be superimposed on the displaying part.
The transmission region may be configured of a space provided in a region adjacent to the displaying part.
The transmission region may be configured of a transparent member provided in a region adjacent to the displaying part.
The displaying part may include a plurality of cells to which the voltage is applied independently and liquid crystals which the cells are filled with.
A planar shape of the transmission region may be circular, elliptical, rectangular, or slit-shaped.
The displaying medium may be configured of a reflective electronic paper device.
According to an embodiment of the present disclosure, there is provided a displaying apparatus including a self-light emitting display including a plurality of light sources, and a flat plate-shaped displaying medium arranged to be superimposed on a displaying face of the display. The displaying medium includes a displaying part configured to maintain displaying in accordance with an application state of voltage, and a plurality of light transmission regions provided adjacent to the displaying part, corresponding to positions of the plurality of light sources of the display.
A width of the light source of the display may be shorter than a width of the transmission region corresponding to the light source.
Displaying of the displaying medium may be controlled in accordance with a light-emitting state of the display.
When video displaying of the display is turned ON, the displaying of the displaying medium may be turned OFF, and when the video displaying of the display is turned OFF, the displaying of the displaying medium may be turned ON.
When the displaying of the displaying medium is turned ON, the displaying medium may display a still image, and when the displaying of the displaying medium is turned OFF, the displaying medium may be set to a transparent state.
An angular field of view in emission of light from the light sources may be 30° or more.
A contrast ratio in the displaying of the displaying medium may be 10:1 or more.
An area ratio between the displaying part and the transmission region of the displaying medium may be 10:1 or more.
A touch sensor may be included on a surface of the displaying medium.
The transmission region may be configured of a space provided in a region adjacent to the displaying part.
The transmission region may be configured of a transparent member provided in a region adjacent to the displaying part.
The displaying part may include a plurality of cells to which the voltage is applied independently and liquid crystals which the cells are filled with.
A planar shape of the transmission region may be circular, elliptical, rectangular, or slit-shaped.
The displaying medium may be configured of a reflective electronic paper device.
According to an embodiment of the present disclosure, a display device may include a display portion to maintain a display state in accordance with a voltage applied thereto; and a plurality of light transmission regions adjacent to the display portion at positions corresponding to a plurality of light sources arranged over the display portion.
According to an embodiment of the present disclosure, an apparatus may include a display portion to maintain a display state in accordance with a voltage applied thereto; a lighting display including a plurality of light sources; and a plurality of light transmission regions adjacent to the display portion at positions corresponding to the plurality of light sources arranged over the display portion.
According to one or more embodiments of the present disclosure, a decrease of brightness can be suppressed in a configuration in which a displaying medium such as an electronic paper device is superimposed on a display that displays video to be adapted to the surrounding environment.
Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the appended drawings. Note that, in this specification and the appended drawings, structural elements that have substantially the same function and structure are denoted with the same reference numerals, and repeated explanation of these structural elements is omitted.
Notably, the description is made in the following order.
First, a configuration of a displaying apparatus according to an embodiment of the present disclosure is described with reference to
In
Specifically, according to the voltage applied to the upper and lower transparent electrodes 152 and 156, display in arbitrary concentration (grayscale) from white to black for each cell 138 is performed. After the upper and lower transparent electrodes 152 and 156 applies the voltage, the display state in the arbitrary concentration is maintained. Accordingly, the electronic paper device 100 can display arbitrary text, patterns and the like with no power consumption. In the embodiment, it is supposed that the electronic paper device 100 performs black-and-white display, whereas color display may be performed.
The electronic paper device 100 is provided with spaces or holes (windows) 110 as light transmission regions 130 in regions which correspond to the LEDs 210 in the LED array 200. The holes 110 are arranged to be adjacent to the displaying parts 140 composed of the cells and the holes 110 constitute spaces. The planar shape of the holes 110 as seen from the viewer may be an arbitrary shape, for example, circular, elliptical, rectangular, slit-shaped or the like. The holes 110 as the transmission regions 130 are formed to have a width wider than that of the LEDs 210. In
Notably, in
As above, providing the holes 110 at the positions corresponding to the LEDs 210 allows the viewer to see the video with no decrease in brightness of the LED array 200 still in the configuration in which the electronic paper device 100 is superimposed on the LED array 200, similarly to the case of the electronic paper device 100 not superimposed thereon.
On the other hand,
As above, the displaying apparatus 1000 according to the embodiment attains the followings. Namely, in normal video displaying, the display in the LED array 200 is turned ON, allowing the light emitted by the LEDs 210 to pass through the transmission regions 130 provided corresponding to the LEDs 210 and to be seen by the user (viewer). Moreover, in no normal video displaying, the display in the LED array 200 is turned OFF and arbitrary text, patterns and the like are displayed on the electronic paper device 100, this allowing the displaying apparatus 1000 to be matched with furniture, walls and the like in a living room or the like. Accordingly, since there is no black display screen in turning OFF the power in the case of no normal video displaying, the presence of the displaying apparatus 1000 can be securely allowed not to stand out.
Next, a contrast ratio of display in the electronic paper device 100 is described. In the embodiment, in displaying by the electronic paper device 100, the electronic paper device 100 is configured to have a contrast ratio of 10:1 or more between the transmission regions 130 and the displaying parts 140 therein. Typically, since a paper medium has a contrast ratio of 10:1 or more, the contrast ratio of 10:1 or more between the transmission regions 130 and the displaying parts 140 can secure a sufficient contrast ratio still in displaying by the electronic paper device 100. Accordingly, the display in the electronic paper device 100 can be made sufficiently clear.
Moreover, in the embodiment, the electronic paper device 100 is configured to secure an angular field of view of 30° or more in displaying by the LED array 200. Thereby, even when the user does not see the displaying apparatus 1000 right in front thereof, the field of view can be definitely secured.
In order to secure the contrast ratio of 10:1 or more, in the displaying apparatus 1000 according to the embodiment, an area ratio between the transmission regions 130 and the displaying parts 140 is configured to be 10:1 or more.
In
In
L12/L22>10 (1)
Moreover, in order to secure the angular field of view to be 30° or more, the value of r satisfies equation (2) below.
r>15° (2)
From equation (1), equation (3) below is obtained.
L2<Sqrt(L12/10) (3)
Moreover, from equation (2), equation (4) below is obtained.
b>d·tan(15°) (4)
Accordingly, the dimension of the LED 210 which is a light-emitting device (=2a) can be represented by equation (5) below.
2a=2(L2−b)<2·{Sqrt(L12/10)−d·tan(15°)} (5)
The values of L1, L2, b, d and r are determined as above so as to satisfy equation (5), and thereby, the contrast ratio of 10:1 can be secured. Notably, the case where the transmission regions 130 are constituted of the holes 110 is described in the above, whereas, in the case where the transmission regions 130 are composed of the transparent materials 120, the values of L1, L2, b, d and r may be converted based on the optical path length according to the transparent materials 120. In this case, the angular field of view can be secured to be a wider angular field of view since the angle at which the light rays proceed spreads wider due to the difference of the refractive indices when the light rays radiate from the inside of the display into the air. Notably, the above-mentioned conditional expressions are presented for the square grid whose pitch and dimension in the horizontal direction are same as its pitch and dimension in the vertical direction. Also for a non-square grid whose pitch and dimension in the horizontal direction are not same as its pitch and dimension in the vertical direction, securing the contrast ratio of 10:1 enables the displaying in the electronic paper device 100 to be sufficiently clear, and securing the angular field of view to be 30° or more enables the field of view to be definitely secured even when the user does not visually see the displaying apparatus 1000 right in front thereof.
Next, an example in which the transmission regions 130 are provided to be slit-shaped is described.
In
L1/L2>10 (6)
Moreover, in order to secure the angular field of view to be 30° or more, the value of r satisfies equation (7) below.
r>15° (7)
From equation (6), equation (8) below is obtained.
L2<L1/10 (8)
Moreover, from equation (7), equation (9) below is obtained.
b>d·tan(15°) (9)
Accordingly, the dimension of the LED 210 which is a light-emitting device (=2a) can be represented by equation (10) below.
2a=2(L2−b)<2·{Sqrt(L12/10)−d·tan(15°)} (10)
As above, in the slit structure, the values of L1, L2, b and d are determined so as to satisfy equation (10), and thereby, the contrast ratio of 10:1 can be secured, this enabling the angular field of view to be secured to be 30° or more.
On the other hand,
As described above, the electronic paper device 100 is arranged on the front face of the LED array 200 which performs the video displaying, and the light transmission regions 130 are provided at the positions in the electronic paper device 100 corresponding to the LEDs 210. Thereby, in the ON-state of the video displaying in the LED array 200, the emitted light from the LEDs 210 can be allowed to pass through the transmission regions 130, leading to the video which provides much sense of presence to be seen by the viewer with no deterioration in brightness. Moreover, in the OFF-state of the video displaying, the electronic paper device 100 performs the reflective displaying, and therefore, the presence of the displaying apparatus 1000 can be made less such that the displaying apparatus 1000 is adapted to the surrounding environment thereof.
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.
Additionally, the present technology may also be configured as below.
A display device including:
(2) The display device according to (1),
(3) The display device according to (1) or (2),
(4) The display device according to any one of (1) to (3) further including:
(5) The display device according to any one of (1) to (4),
(6) The display device according to any one of (1) to (5),
(7) The display device according to any one of (1) to (6),
(8) The display device according to any one of (1) to (7),
(9) The display device according to any one of (1) to (8),
(10) The display device according to any one of (1) to (9),
(11) The display device according to any one of (1) to (10),
(12) The display device according to any one of (1) to (11),
(13) The display device according to any one of (1) to (12),
(14) The display device according to any one of (1) to (13),
(15) The display device according to any one of (1) to (14),
(16) An apparatus including:
a display portion to maintain a display state in accordance with a voltage applied thereto; a lighting display including a plurality of light sources; and a plurality of light transmission regions adjacent to the display portion at positions corresponding to the plurality of light sources arranged over the display portion.
(17) The apparatus according to (16) further including:
(18) The apparatus according to (16) or (17),
(19) The apparatus according to any one of (16) to (18),
(20) The apparatus according to any one of (16) to (19),
(21) A displaying medium including:
(22) The displaying medium according to (21),
(23) The displaying medium according to (21) or (22),
(24) The displaying medium according to any one of (21) to (23),
(25) The displaying medium according to any one of (21) to (24),
(26) The displaying medium according to any one of (21) to (25),
(27) A displaying apparatus including:
(28) The displaying apparatus according to (27),
(29) The displaying apparatus according to (27) or (28),
(30) The displaying apparatus according to any one of (27) to (29),
(31) The displaying apparatus according to any one of (27) to (30),
(32) The displaying apparatus according to any one of (27) to (31),
(33) The displaying apparatus according to any one of (27) to (32),
(34) The displaying apparatus according to any one of (27) to (33),
(35) The displaying apparatus according to any one of (27) to (34),
(36) The displaying apparatus according to any one of (27) to (35),
(37) The displaying apparatus according to any one of (27) to (36),
(38) The displaying apparatus according to any one of (27) to (37),
(39) The displaying apparatus according to any one of (27) to (38),
(40) The displaying apparatus according to any one of (27) to (39),
Number | Date | Country | Kind |
---|---|---|---|
2013-155857 | Jul 2013 | JP | national |
Number | Name | Date | Kind |
---|---|---|---|
6212805 | Hill | Apr 2001 | B1 |
20040145562 | Horikiri | Jul 2004 | A1 |
20050018272 | Kimura | Jan 2005 | A1 |
20060187528 | Hagood | Aug 2006 | A1 |
20070171212 | Sakurai | Jul 2007 | A1 |
20070206156 | Quach | Sep 2007 | A1 |
20080278798 | Hagood | Nov 2008 | A1 |
20090147185 | Quach | Jun 2009 | A1 |
20090293329 | Kim | Dec 2009 | A1 |
20100176719 | Hirakata | Jul 2010 | A1 |
20100184510 | Nittou | Jul 2010 | A1 |
20110051043 | Kim | Mar 2011 | A1 |
20110164034 | Bennett | Jul 2011 | A1 |
20110279755 | Nittou | Nov 2011 | A1 |
20120105954 | Prouty, IV | May 2012 | A1 |
20120176570 | Yamazaki | Jul 2012 | A1 |
20130335657 | Kira | Dec 2013 | A1 |
20140184573 | Nemchuk | Jul 2014 | A1 |
Number | Date | Country |
---|---|---|
2008-102660 | May 2008 | JP |
2011-075663 | Apr 2011 | JP |
Number | Date | Country | |
---|---|---|---|
20150029418 A1 | Jan 2015 | US |