JP2013156294A - Display sheet, display device and electronic apparatus - Google Patents

Abstract

A display sheet capable of exhibiting excellent display characteristics, a display device including the display sheet, and an electronic apparatus are provided.
A display sheet 21 includes a substrate 11, a substrate 12 disposed opposite to the substrate 11, and a white particle 51 and a black particle 52 that are provided between the substrate 11 and the substrate 12 and are positively or negatively charged. A display layer 400 filled with the dispersion liquid 100 dispersed in the dispersion medium 7 and a plurality of display layers 400 provided in the display layer 400 and dividing the display layer 400 into a plurality of regions S in a plan view. A partition member 6 having a wall portion and a plurality of reflecting members 8 provided in each of the plurality of regions S and having a reflecting surface inclined with respect to the normal line of the surface of the substrate 11 on the display layer 400 side are provided.
[Selection] Figure 1

Description

  The present invention relates to a display sheet, a display device, and an electronic apparatus.

2. Description of the Related Art An electrophoretic display device that displays a desired image using electrophoresis is known. Since this electrophoretic display device has excellent portability and power saving, it is used, for example, in electronic paper.
Such an electrophoretic display device has, for example, a pair of electrodes arranged opposite to each other and a display layer provided between the electrodes, and the display layer includes positively charged particles and negatively A dispersion liquid obtained by dispersing charged particles in a liquid phase dispersion medium is filled (for example, see Patent Document 1). Such an electrophoretic display causes a particle in the display layer to migrate by applying a voltage between a pair of electrodes, thereby displaying a desired image.

Further, the electrophoretic display device according to Patent Document 1 has a partition type structure in which a display layer is divided into a plurality of cells by partition walls.
However, in the conventional partition-type electrophoretic display device, light entering the cell from the outside of the display surface side does not enter the partition wall, so that the partition wall visible from the display surface side does not have a desired color, As a result, there has been a problem that the reflectance of a desired color is lowered or color misregistration (color unevenness) occurs.

JP 2010-44114 A

  An object of the present invention is to provide a display sheet that can exhibit excellent display characteristics, a display device including the display sheet, and an electronic apparatus.

Such an object is achieved by the present invention described below.
The display sheet of the present invention includes a first substrate,
A second substrate disposed opposite to the first substrate;
A display layer provided between the first substrate and the second substrate and filled with a dispersion liquid in which at least one kind of positively or negatively charged particles is dispersed in a dispersion medium;
A partition member provided in the display layer and having a plurality of wall portions that divide the display layer into a plurality of regions in a plan view of the display layer;
And a plurality of reflecting members each having a reflecting surface provided in each of the plurality of regions and inclined with respect to a normal line of the surface on the display layer side of the first substrate.

  According to the display sheet configured as described above, light that has entered the respective regions (in the dispersion liquid) from the outside on the display surface side can be reflected toward the wall portion of the partition wall member by the reflection surface of the reflection member. . The reflected light is colored by particles of the desired color existing on the display surface side when the reflected light enters the dispersion liquid from the outside of the display surface side in the display state of the desired color. Therefore, the color of the wall part visually recognized from the display surface side can be made into the said desired color by making this reflected light enter into a wall part. As a result, it is possible to prevent or suppress a decrease in reflectance and color shift of the desired color. Thereby, the display characteristic can be made excellent.

In the display sheet of the present invention, each of the reflecting members has a polygonal pyramid shape having a bottom surface and a plurality of side surfaces, the bottom surface is provided along a surface of the first substrate on the display layer side, and each of the side surfaces. Preferably constitutes the reflecting surface.
The reflection member configured as described above can be formed easily and with high accuracy by an imprint method or the like.

In the display sheet according to the aspect of the invention, it is preferable that the bottom surface of each of the reflecting members has a shape similar to the planar view shape of each of the regions.
Thereby, the light reflected by the reflecting surface of the reflecting member can be more reliably incident on the wall portion. In addition, the reflecting member can be arranged by efficiently using the space in each region.
In the display sheet of the present invention, it is preferable that the height of the reflecting member is equal to the height of the partition member.
Thereby, the area of the reflective surface of the reflective member can be maximized.

In the display sheet of the present invention, a plurality of first electrodes provided on the first substrate side with respect to the display layer,
It is preferable to include a second electrode provided on the second substrate side with respect to the display layer.
Thus, by applying a voltage between the first electrode and the second electrode, it is possible to cause electrophoresis of particles in the display layer and display an image.

In the display sheet of the present invention, the plurality of first electrodes include a plurality of electrodes provided side by side in the circumferential direction around the apex of the polygonal pyramid shape of each reflective member in plan view of the display layer. It is preferable to include.
Thereby, in each area | region, particle | grains can be efficiently migrated to the 1st electrode side.

In the display sheet of the present invention, it is preferable that the plurality of first electrodes include a pair of electrodes facing each other through the wall portion in a plan view of the display layer.
Thereby, high definition or multi-gradation of the display image can be achieved.
In the display sheet of the present invention, it is preferable that the plurality of first electrodes include electrodes straddling the wall portion in a plan view of the display layer.
Thereby, it is possible to prevent color mixing between two adjacent regions with a simple configuration.

In the display sheet of the present invention, it is preferable that the first electrode is provided between the first substrate and the reflecting member.
Thereby, the area of the reflective surface of a reflective member can be enlarged. Moreover, when manufacturing a display sheet, formation of a 1st electrode becomes easy.
In the display sheet of the present invention, it is preferable that the first electrode is provided on the side surface of the reflecting member.
Thereby, an electric field can be made to act efficiently on a dispersion liquid by applying a voltage between a 1st electrode and a 2nd electrode.
In the display sheet of this invention, it is preferable that the said partition member has a light transmittance.
Thereby, the light incident on the wall portion of the partition member can be transmitted. Therefore, the transmitted light can be reflected to the display surface side by the reflecting surface of another reflecting member (adjacent through the wall).

The display device of the present invention includes the display sheet of the present invention.
Thereby, a display device having excellent display characteristics can be provided.
An electronic apparatus according to the present invention includes the display device according to the present invention.
Thereby, an electronic device having excellent reliability can be provided.

It is sectional drawing which shows typically schematic structure of the display apparatus which concerns on 1st Embodiment of this invention. It is a top view of the display apparatus shown in FIG. (A) is a figure for demonstrating the effect | action (white display) of the display apparatus shown in FIG. 1, (b) is a figure for demonstrating the effect | action (black display) of the display apparatus shown in FIG. It is a figure for demonstrating an example of the manufacturing method of the display apparatus shown in FIG. It is sectional drawing which shows typically schematic structure of the display apparatus which concerns on 2nd Embodiment of this invention. It is a top view of the display apparatus shown in FIG. It is sectional drawing which shows typically schematic structure of the display apparatus which concerns on 3rd Embodiment of this invention. It is a top view of the display apparatus shown in FIG. It is a top view which shows typically schematic structure of the display apparatus which concerns on 4th Embodiment of this invention. It is a top view which shows typically schematic structure of the display apparatus which concerns on 5th Embodiment of this invention. It is a top view which shows typically schematic structure of the display apparatus which concerns on 6th Embodiment of this invention. It is a schematic diagram which shows schematic structure of the display apparatus which concerns on 7th Embodiment of this invention. It is sectional drawing which shows typically schematic structure of the display sheet shown in FIG. It is a perspective view which shows embodiment at the time of applying the electronic device of this invention to electronic paper. It is a figure which shows embodiment at the time of applying the electronic device of this invention to a display.

Hereinafter, a display sheet, a display device, and an electronic device of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
(Display device)
First, a display device incorporating the display sheet of the present invention will be described.
<First Embodiment>
1 is a cross-sectional view schematically showing a schematic configuration of a display device according to a first embodiment of the present invention, FIG. 2 is a plan view of the display device shown in FIG. 1, and FIG. FIG. 3B is a diagram for explaining the operation (black display) of the display device shown in FIG. 1. 1 and 2, for convenience of explanation, the X axis, the Y axis, and the Z axis are illustrated as three axes orthogonal to each other, and the tip side of each illustrated arrow is indicated as “+ side”. The base end side is defined as “− side”. Hereinafter, for convenience of explanation, a direction parallel to the X axis is referred to as an “X axis direction”, a direction parallel to the Y axis is referred to as a “Y axis direction”, and a direction parallel to the Z axis is referred to as a “Z axis direction”. Further, the + Z side (the front side in FIG. 2) is referred to as “up”, and the −Z side (the back side in FIG. 2) is referred to as “down”.

A display device 20 (display device of the present invention) shown in FIG. 1 is an electrophoretic display device that displays a desired image using particle migration. The display device 20 includes a display sheet 21.
As shown in FIG. 1, a display sheet 21 includes a substrate (first substrate) 11, a substrate (second substrate) 12 disposed opposite to the substrate 11, and a display layer provided between the substrates 11 and 12. 400, a partition member 6 that divides the inside of the display layer 400 into a plurality of regions S in plan view, and a reflecting member 8 provided in each region S.

  Here, the substrate 11 includes a flat base 1 and a plurality of first electrodes 3 provided on the upper surface of the base 1. The board 11 is provided with a circuit (not shown), and the board 11 constitutes a circuit board (back plane) 22. Such a circuit includes, for example, TFTs (switching elements) arranged in a matrix, gate lines and data lines formed corresponding to the TFTs, a gate driver for applying a desired voltage to the gate lines, and data lines. A data driver that applies a desired voltage, and a gate driver and a control unit that controls driving of the data driver are included.

The substrate 12 includes a flat base 2 and a second electrode 4 provided on the lower surface of the base 2.
The display layer 400 is filled with the dispersion liquid 100.
In such a display sheet 21, an electric field is applied to the dispersion 100 by applying a voltage between the first electrode 3 and the second electrode 4, and the upper surface 121 side of the substrate 12 is set as the display surface side. Display an image.

Hereinafter, each part which comprises the display apparatus 20 is demonstrated in detail sequentially.
The base 1 and the base 2 are each composed of a sheet-like (flat plate) member, and have a function of supporting and protecting each member disposed therebetween. Each of the base portions 1 and 2 may be either flexible or hard, but is preferably flexible. By using the bases 1 and 2 having flexibility, it is possible to obtain a display device 20 having flexibility, that is, for example, a display device 20 useful in constructing electronic paper.

  When each base part (base material layer) 1 and 2 is flexible, the constituent materials thereof are, for example, polyesters such as PET (polyethylene terephthalate) and PEN (polyethylene naphthalate), polyethylene, etc. Polyolefins, modified polyolefins, polyamides, thermoplastic polyimides, polyethers, polyether ether ketones, various thermoplastic elastomers such as polyurethanes and chlorinated polyethylenes, or their main copolymers, blends, polymer alloys, etc. 1 type or 2 types or more of these can be mixed and used.

  The average thicknesses of the bases 1 and 2 are appropriately set depending on the constituent material and application, and are not particularly limited. However, when having flexibility, the average thickness is preferably about 20 μm or more and 500 μm or less. More preferably, it is about 25 μm or more and 250 μm or less. Thereby, size reduction (especially thickness reduction) of the display apparatus 20 can be achieved, aiming at harmony with the softness | flexibility of the display apparatus 20, and intensity | strength.

A first electrode 3 and a second electrode 4 that are layered (film-like) are provided on the surface of the bases 1 and 2 on the display layer side, that is, on the upper surface of the base 1 and the lower surface of the base 2, respectively. Yes. That is, the display sheet 21 includes a plurality of first electrodes 3 provided on the substrate 11 side with respect to the display layer 400 and a second electrode 4 provided on the substrate 12 side with respect to the display layer 400. . Thus, by applying a voltage between the first electrode 3 and the second electrode 4, particle electrophoresis is caused in the display layer 400, and an image can be displayed.
Here, the first electrode 3 is an individual electrode (pixel electrode connected to the TFT) divided in a matrix (matrix), and the second electrode 4 is a common electrode. In such a display device 20, a region where one first electrode 3 and the second electrode 4 overlap constitute one pixel.

Each 1st electrode 3 is provided between the board | substrate 11 and the reflection member 8 mentioned later. Thereby, the area of the reflective surfaces 81-84 of the reflective member 8 mentioned later can be enlarged. Moreover, when the display sheet 21 is manufactured, the first electrode 3 can be easily formed.
The plurality of first electrodes 3 are provided corresponding to the side surfaces (reflection surfaces 81, 82, 83, 84) of the plurality of reflection members 8 having a polygonal pyramid shape as will be described later. That is, the plurality of first electrodes 3 correspond to the first electrode 3 (electrode 31) corresponding to the reflecting surface 81, the first electrode 3 (electrode 32) corresponding to the reflecting surface 82, and the reflecting surface 83. The first electrode 3 (electrode 33) and the first electrode 3 (electrode 34) corresponding to the reflecting surface 84 are included.

In addition, the plurality of first electrodes 3 are a plurality of first electrodes 3 (electrodes 31) provided side by side in the circumferential direction around the vertex of the polygonal pyramid shape of each reflecting member 8 in plan view of the display layer 400. , 32, 33, 34). Thereby, in each area | region S, the particle | grains (white particle 51 or black particle 52) in the dispersion liquid 100 can be efficiently migrated to the 1st electrode 3 side.
The plurality of first electrodes 3 includes a pair of first electrodes 3 (electrodes 33 and 34) facing each other via a wall portion 61 of a partition wall member 6 described later in a plan view of the display layer 400, The display layer 400 includes a pair of first electrodes 3 (electrodes 31 and 32) facing each other via a wall portion 62 of the partition wall member 6 which will be described later in plan view. Thereby, high definition or multi-gradation of the display image can be achieved.

Further, each first electrode 3 forms a triangle in plan view. Specifically, each first electrode 3 forms a right isosceles triangle.
Of the plurality of first electrodes 3, the assembly of the four first electrodes 3 (electrodes 31 to 34) corresponding to the respective reflecting members 8 has a rectangular outer periphery in plan view. In addition, the planar view shape of the 1st electrode 3 is not limited to this, For example, a square, a rectangle, trapezoid, etc. may be sufficient.

The constituent materials of the electrodes 3 and 4 are not particularly limited as long as they are substantially conductive, for example, metal materials such as gold, silver, copper, aluminum or alloys containing these, carbon black, etc. An ionic substance such as NaCl, Cu (CF ₃ SO ₃ ) ₂ is dispersed in a carbon-based material, an electroconductive polymer material such as polyacetylene, polyfluorene or a derivative thereof, or a matrix resin such as polyvinyl alcohol or polycarbonate. Various conductive materials such as ion conductive polymer materials, conductive oxide materials such as indium oxide (IO), indium tin oxide (ITO), fluorine-doped tin oxide (FTO), etc. 1 type or 2 types or more can be used in combination.
Further, the average thickness of the electrodes 3 and 4 is appropriately set depending on the constituent material and application, and is not particularly limited, but is preferably about 0.01 μm or more and 10 μm or less, preferably 0.02 μm or more and 5 μm or less. More preferred is the degree.

  Here, among the bases 1 and 2 and the electrodes 3 and 4, the base and the electrode disposed on the display surface side are each transparent, that is, substantially transparent (colorless and transparent, colored and transparent). Or translucent). In the present embodiment, at least the base 2 and the second electrode 4 are substantially transparent. Thereby, the state of the white particles 51 and the black particles 52 in the dispersion liquid 100, that is, the information (image) displayed on the display device 20 can be easily recognized visually from the display surface side.

Between the board | substrate 12 and the board | substrate 11, the sealing part 9 is provided along those edge parts. The display layer 400 is hermetically sealed by the sealing portion 9. Thereby, it is possible to prevent moisture from entering the display device 20 and more reliably prevent display performance deterioration of the display device 20.
The constituent material of the sealing portion 9 is not particularly limited. For example, a thermoplastic resin such as an acrylic resin, a urethane resin, or an olefin resin, an epoxy resin, a melamine resin, or a heat such as a phenol resin. Various resin materials such as a curable resin can be used, and one or more of these can be used in combination.

The display layer 400 is filled with the dispersion liquid 100.
The dispersion liquid 100 is a dispersion medium 7 in which white particles (first particles) 51 and black particles (second particles) 52 charged to opposite electrodes are dispersed.
As the dispersion medium 7, a medium having a relatively high insulating property is preferably used. Examples of the dispersion medium 7 include various types of water (for example, distilled water, pure water, etc.), alcohols such as methanol, cellosolves such as methyl cellosolve, esters such as methyl acetate, ketones such as acetone, pentane and the like. Aliphatic hydrocarbons (liquid paraffin), cyclohexane and other alicyclic hydrocarbons, benzene and other aromatic hydrocarbons, methylene chloride and other halogenated hydrocarbons, pyridine and other aromatic heterocycles and acetonitrile Nitriles such as amides, amides such as N, N-dimethylformamide, carboxylates, silicone oils or other various oils, and the like, and these can be used alone or as a mixture.

  Among these, as the dispersion medium 7, an aliphatic hydrocarbon (liquid paraffin) or a material mainly composed of silicone oil is preferable. The dispersion medium 7 mainly composed of liquid paraffin or silicone oil has a high aggregation suppressing effect on the white particles 51 and the black particles 52. Therefore, it is possible to more reliably prevent or suppress the display performance of the display device 20 from deteriorating with time. In addition, liquid paraffin or silicone oil is preferable from the viewpoint of excellent weather resistance and high safety because it does not have an unsaturated bond.

  Further, in the dispersion medium 7, for example, an electrolyte, a surfactant such as an alkenyl succinate (anionic or cationic), a metal soap, a resin material, a rubber material, an oil, a varnish, a compound, as necessary. Various additives such as a charge control agent composed of particles such as a dispersant, a dispersant such as a silane coupling agent, a lubricant, and a stabilizer may be added. When the dispersion medium 7 is colored, various dyes such as anthraquinone dyes, azo dyes, and indigoid dyes may be dissolved in the dispersion medium 7 as necessary.

  The white particles 51 and the black particles 52 are particles that are charged and can be electrophoresed in the dispersion medium 7 by the action of an electric field. As the white particles 51 and the black particles 52, any particles can be used as long as they have electric charges. Although not particularly limited, at least one of pigment particles, resin particles, or composite particles thereof is used. Preferably used. These particles have the advantage that they are easy to manufacture and the charge can be controlled relatively easily.

  Examples of the pigment constituting the pigment particles include black pigments such as aniline black, carbon black, titanium black and copper chromite, white pigments such as titanium oxide and antimony oxide, azo pigments such as monoazo, isoindolinone, Yellow pigments such as yellow lead, red pigments such as quinacridone red and chrome vermilion, blue pigments such as phthalocyanine blue and indanthrene blue, green pigments such as phthalocyanine green, etc. They can be used in combination.

Examples of the resin material constituting the resin particles include acrylic resin, urethane resin, urea resin, epoxy resin, polystyrene, polyester, and the like, and one or more of these are combined. Can be used.
The composite particles include, for example, those in which the surface of the pigment particles is coated with a resin material or other pigment, those in which the surface of the resin particles is coated with a pigment, or a mixture in which the pigment and the resin material are mixed at an appropriate composition ratio. The particle | grains comprised by are mentioned.
Examples of the particles obtained by coating the surface of the pigment particles with other pigments include those obtained by coating the surface of the titanium oxide particles with silicon oxide or aluminum oxide. Such particles are preferably used as the white particles 51. Used. Further, carbon black particles or particles covering the surface thereof are preferably used as the black particles 52.

  The shapes of the white particles 51 and the black particles 52 are not particularly limited, but are preferably spherical. Moreover, the average particle diameter of the white particles 51 and the black particles 52 is not particularly limited, but is preferably 10 nm or more and 500 nm or less, more preferably 20 nm or more and 300 nm or less. If the average particle diameter of the white particles 51 and the black particles 52 is less than 10 nm, sufficient chromaticity cannot be obtained, and the contrast may be lowered and the display may become unclear. Conversely, when the average particle diameter of the white particles 51 and the black particles 52 exceeds 300 nm, it is necessary to increase the degree of coloring of the particles themselves more than necessary, increasing the amount of pigments used and increasing the voltage for display. It is difficult to move the particles quickly at the portion where is applied, and the response speed may decrease.

In addition, the average particle diameter of the white particle 51 and the black particle 52 means the volume average particle diameter measured with the dynamic light scattering type particle size distribution measuring apparatus (for example, product name: LB-500, manufactured by Horiba, Ltd.). To do.
In the present embodiment, the average particle diameters of the white particles 51 and the black particles 52 are set to be approximately equal to each other.
The partition member 6 is provided in the display layer 400 as described above.

As shown in FIG. 2, the partition member 6 has a function of dividing the display layer 400 into a plurality of regions in a plan view of the display layer 400.
The partition wall member 6 extends in the X-axis direction (first direction) and is arranged in the Y-axis direction (second direction) in a plan view of the display layer 400. 61 and a plurality of second wall portions 62 that extend in the Y-axis direction and are arranged side by side in the X-axis direction and intersect with the first wall portions 61. As a result, a plurality of regions S surrounded by a pair of adjacent first wall portions 61 and a pair of adjacent second wall portions 62 are formed in a matrix.

The partition member 6 is configured such that each region S includes the above-described set of four electrodes 31 to 34 in a plan view of the display layer 400. That is, the partition member 6 is configured so that each region S corresponds to four pixels. Thereby, it is possible to increase the definition of the display image while increasing the aperture ratio.
The separation distance between a pair of adjacent first wall portions 61 is not particularly limited, and varies depending on the size and shape of the first electrode 3, but is preferably about 1 μm or more and 1 cm or less, and is 5 μm or more and 5 mm or less. More preferred is the degree. The separation distance between the pair of adjacent second wall portions 62 is preferably the same as this. By setting it as such a numerical range, while the white particle 51 and the black particle 52 in the area | region S can be electrophoresed effectively, the white particle 51 and the black particle 52 in the area | region S are unwilling. Uneven distribution can be prevented or suppressed.

In the present embodiment, the height of the partition wall member 6 (the length in the Z-axis direction) is set to be equal to the thickness of the display layer 400. Note that the height of the partition wall member 6 may be set to be lower than the thickness of the display layer 400. In this case, for example, the partition member 6 may be fixed to the substrate 11 or the substrate 12.
Moreover, the partition member 6 has light transmittance. Thereby, as described later, when the reflected light from the reflecting member 8 enters the partition member 6, the light incident on the wall portions 61 and 62 of the partition member 6 can be transmitted. Therefore, the transmitted light can be reflected to the display surface side by the reflection surface of the other reflection member 8 (adjacent via the wall portions 61 and 62). As a result, the reflectance can be improved.

Such a partition member 6 may be substantially colorless and transparent, or may be colored. When it is colored, the color is not particularly limited, but is preferably white.
Moreover, it is preferable that the partition member 6 has a function of diffusing light. Thereby, a part of the light incident on the wall portions 61 and 62 of the partition wall member 6 from within the region S can be emitted from the wall portions 61 and 62 to the display surface side.

The partition member 6 has a relatively high insulating property. Thereby, generation | occurrence | production of leak current can be suppressed and the power saving of the drive of the display apparatus 20 can be achieved. Moreover, it is preferable that the partition member 6 has flexibility. Thereby, when the display device 20 is deformed, the partition wall member 6 is also deformed accordingly, so that damage or the like of the display device 20 can be effectively prevented or suppressed.
Moreover, the partition member 6 is uncharged.

  The constituent material of the partition member 6 is not particularly limited. For example, polyolefin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, modified polyolefin, polyamide (eg nylon 6, nylon 66), styrene, polychlorinated Various thermoplastic elastomers such as vinyl-based, polyurethane-based, polyester-based, fluororubber-based, chlorinated polyethylene, etc., or copolymers, blends, polymer alloys, etc. mainly composed of these are listed. A seed or a mixture of two or more can be used.

A reflective member 8 is provided in each region S formed by the partition member 6 as described above.
The reflection member 8 is provided on the upper surface of the substrate 11. Further, the reflecting member 8 is provided in each of the plurality of regions S described above. Thereby, the reflecting member 8 is provided corresponding to each region S.
The reflecting member 8 has reflecting surfaces 81, 82, 83, and 84 that are inclined with respect to a normal line (a line segment parallel to the Z axis) of the surface (upper surface) of the substrate 11 on the display layer side. Thereby, the light that has entered the respective regions S (inside the dispersion liquid 100) from the outside on the display surface side is reflected by the reflecting surfaces 81 to 84 of the reflecting member 8 toward the walls 61 and 62 of the partition wall member 6. it can.

  More specifically, the reflecting member 8 has a polygonal pyramid shape (in this embodiment, a quadrangular pyramid shape) that converges from the lower side toward the upper side. Such a reflecting member 8 has a polygonal (rectangular in this finger form) bottom surface along the top surface (XY plane) of the substrate 11 and a plurality (four in this embodiment) inclined with respect to the top surface of the substrate 11. Side surface (pyramidal surface). These four side surfaces constitute the reflecting surfaces 81, 82, 83, and 84. The reflection member 8 configured as described above can be formed easily and with high accuracy by an imprint method or the like.

Further, the bottom surface of each reflecting member 8 is similar to the planar view shape of each region S. Thereby, the light reflected by the reflecting surfaces 81 to 84 of the reflecting member 8 can be made to enter the wall portions 61 and 62 more reliably. Moreover, the reflective member 8 can be arrange | positioned using the space in each area | region S efficiently.
Each reflective surface 81, 82, 83, 84 is a flat surface. Each reflective surface 81, 82, 83, 84 may be a curved surface.

Further, the reflecting surfaces 81, 82, 83, 84 are provided so as to correspond to the electrodes 31, 32, 33, 34 described above, respectively. That is, when viewed in plan, the reflective surface 81 overlaps the electrode 31, the reflective surface 82 overlaps the electrode 32, the reflective surface 83 overlaps the electrode 33, and the reflective surface 84 overlaps the electrode 34.
The reflecting surfaces 81 and 82 are parallel to the Y-axis direction and are inclined with respect to the X-axis and the Z-axis. The reflecting surfaces 83 and 84 are parallel to the X-axis direction and are inclined with respect to the Y-axis and the Z-axis.

The inclination angles θ of the reflecting surfaces 81, 82, 83, and 84 with respect to the XY plane (surface parallel to both the X axis and the Y axis) are each preferably 30 degrees or more and 60 degrees or less, and preferably 40 degrees or more and 50 degrees. More preferably, it is 45 degrees or less. Thereby, the light traveling in the dispersion liquid 100 along the X-axis direction or the Y-axis direction is reflected by the reflecting surfaces 81, 82, 83, 84 in a desired direction (a direction along the Z-axis direction), thereby the substrate 12 is Can be emitted to the outside. Further, the light incident on the dispersion liquid 100 via the substrate 12 can be reflected by the reflecting surfaces 81, 82, 83, 84 in the direction along the X-axis direction or the Y-axis direction.
Further, the height of the reflecting member 8 (the length in the Z-axis direction) is set to be equal to the thickness of the display layer 400. In other words, the height of the reflecting member 8 is equal to the height of the partition wall member 6. Thereby, the area of the reflective surfaces 81-84 can be enlarged as much as possible. Note that the height of the reflecting member 8 may be set to be lower than the thickness of the display layer 400.

The constituent material of the reflecting member 8 is not particularly limited, but the same constituent material as that of the partition member 6 described above can be used.
Further, the side surface of the reflecting member 8 may be subjected to a mirror surface treatment or may be subjected to a surface roughening treatment so as to diffuse light. A reflective film such as a dielectric multilayer film may be provided on the side surface of the reflective member 8.

The display device 20 configured as described above is driven as follows.
When a voltage is applied between the electrodes 3 and 4, an electric field is generated between them. According to this electric field, the white particles 51 and the black particles 52 move (electrophoresis) toward one of the electrodes 3 and 4, respectively.
Hereinafter, as a specific example, a case where the white particles 51 having positive charge are used, the black particles 52 are negatively charged, and two adjacent pixels are displayed in the same color will be representatively described.

-White display state-
When a voltage is applied between the first electrode 3 and the second electrode 4 so that the first electrode 3 has a positive potential and the second electrode 4 has a negative potential, the electric field generated by the voltage application is displayed on the display layer. It acts on the white particles 51 and the black particles 52 in 400. Then, as shown in FIG. 3A, the white particles 51 migrate and gather on the second electrode 4 side, and the black particles 52 migrate and gather on the first electrode 3 side. Thereby, it will be in the white display state in which white is displayed on a display surface.

  At this time, the light incident on the dispersion liquid 100 from the outside on the display surface side is scattered by the white particles 51 existing on the display surface side. The scattered light travels in all directions, and the light hitting the reflecting surfaces 81 to 84 of the reflecting member 8 is reflected toward the wall portions 61 and 62 of the partition wall member 6. Thereby, the color of the wall parts 61 and 62 visually recognized from the display surface side turns white. A part of the light incident on the partition wall member 6 diffuses into the dispersion liquid 100 and is reflected toward the display surface by the reflection surfaces 81 to 84 of the reflection member 8. Thereby, the reflectance in the white display state can be further increased, and the color shift can be prevented or suppressed.

−Black display state−
When a voltage is applied between the first electrode 3 and the second electrode 4 so that the first electrode 3 has a positive potential and the second electrode 4 has a negative potential, the electric field generated by the voltage application is displayed on the display layer. It acts on the white particles 51 and the black particles 52 in 400. Then, as shown in FIG. 3B, the white particles 51 migrate and gather on the first electrode 3 side, and the black particles 52 migrate and gather on the second electrode 4 side. Thereby, it will be in the black display state in which black is displayed on a display surface.

  At this time, the light incident on the dispersion liquid 100 from the outside on the display surface side is absorbed by the black particles 52 existing on the display surface side. Further, part of the light directly incident on the walls 61 and 62 from the outside on the display surface side diffuses into the dispersion liquid 100 and is reflected toward the display surface by the reflecting surfaces 81 to 84 of the reflecting member 8. However, since black particles are present on the display surface side, the reflectance in the black display state can be further reduced.

  As described above, according to the display sheet 21, the light that has entered the respective regions S (inside the dispersion liquid 100) from the outside on the display surface side is reflected by the reflecting surfaces 81 to 84 of the reflecting member 8 and the walls of the partition wall member 6. It can reflect toward 61,62. This reflected light is colored by particles of the desired color existing on the display surface side when the reflected light is incident on the dispersion liquid 100 from the outside of the display surface side in the display state of the desired color (white in the present embodiment). Has been. Therefore, the color of the wall part visually recognized from the display surface side can be made into the said desired color by making this reflected light enter into wall part 61,62. As a result, it is possible to prevent or suppress a decrease in reflectance and color shift of the desired color. Thereby, the display characteristic can be made excellent.

(Manufacturing method of display device)
Next, an example of a method for manufacturing the display device 20 configured as described above will be briefly described with reference to FIG.
FIG. 4 is a diagram for explaining an example of a manufacturing method of the display device shown in FIG.
First, as shown in FIG. 4A, a plurality of first electrodes 3 are formed on one surface of the base 1. Thereby, the substrate 11 is obtained.
A method for forming the plurality of first electrodes 3 is not particularly limited. For example, a chemical vapor deposition method (CVD) such as plasma CVD or thermal CVD, a dry plating method such as vacuum deposition, or a wet plating method such as electrolytic plating. Thermal spraying, sol-gel method, MOD method, metal foil bonding, etc. can be used.

Next, as shown in FIG. 4B, the partition wall member 6 and the reflection member 8 are formed.
As a method of forming the partition member 6 and the reflecting member 8, an imprint method can be used. Thereby, the partition member 6 and the reflecting member 8 can be formed in a lump in a simple and highly accurate manner. The method for forming the partition member 6 and the reflecting member 8 is not limited to this, and other known film forming methods and processing methods can also be used.

Next, as shown in FIG. 4C, the dispersion liquid 100 is filled (injected) into each region S divided by the partition wall member 6. Thereby, the display layer 400 is obtained.
A method for filling the dispersion 100 is not particularly limited, and various coating methods such as a spin coating method, a dip coating method, and a spray coating method can be used.
Further, if necessary, for example, a squeegee (a flat jig) is used so that the thickness (amount) of the dispersion liquid 100 becomes uniform.

Thereafter, as shown in FIG. 4D, the substrate 12 is bonded to the substrate 11 through the display layer 400, and in this state, the sealing portion 9 is formed although not shown in FIG. 4D. To do. Thereby, the dispersion liquid 100 is sealed and the display apparatus 20 is obtained.
At this time, the substrate 12 may be bonded to the partition member 6 with an adhesive or the like.
Further, as the method for forming the substrate 12, the same method as the method for forming the substrate 11 described above can be used.

Second Embodiment
FIG. 5 is a sectional view schematically showing a schematic configuration of a display device according to the second embodiment of the present invention, and FIG. 6 is a plan view of the display device shown in FIG.
Hereinafter, the second embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
The display device according to the second embodiment of the present invention is the same as the display device of the first embodiment described above except that the configuration of the first electrode is different. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

The display device 20A shown in FIG. 5 is the same as the display device 20 of the first embodiment described above, the electrode 31 in one region S and the other region of the electrodes 31, 32 in two regions S adjacent in the X-axis direction. S electrode 32 is integrated, and electrode 33 in one region S and electrode 34 in the other region S of two regions S adjacent to each other in the Y-axis direction are integrated. It is.
In other words, the display device 20A integrates the electrodes 31 and 32 adjacent to each other via the second wall portion 62 and is adjacent to each other via the first wall portion 61 in the display device 20 of the first embodiment described above. The matching electrode 33 and electrode 34 are integrated.

The display device 20A includes a substrate 11A instead of the substrate 11 in the display device 20 of the first embodiment described above.
The substrate 11 </ b> A includes a base 1 and a plurality of first electrodes (pixel electrodes) 3 </ b> A provided on the upper surface of the base 1.
As shown in FIG. 6, the plurality of first electrodes 3 </ b> A are arranged in a matrix in a direction inclined by 45 degrees with respect to the X-axis direction and the Y-axis direction in plan view.
Each first electrode 3A has a quadrangular shape in plan view.

  The plurality of first electrodes 3 </ b> A includes a first electrode 3 </ b> A (electrodes 33 </ b> A and 34 </ b> A) straddling the wall 61 in a plan view of the display layer 400 and a first electrode 3 </ b> A straddling the wall 62 in a plan view of the display layer 400. 1 electrode 3A (electrodes 31A and 32A). Thereby, it is possible to prevent color mixing between two adjacent regions S with a simple configuration. In the first embodiment described above, the color mixing between the two adjacent regions S can also be achieved by driving the adjacent electrodes 31 and 32 or the electrodes 33 and 34 through the walls 61 and 62 at the same potential. Can be prevented.

Here, the electrode 31A is provided so as to straddle one of the two second wall portions 62 adjacent to each other of the partition wall member 6 in plan view. The electrode 32 </ b> A is provided so as to straddle the other second wall portion 62 of the two adjacent second wall portions 62 of the partition wall member 6 in plan view.
Similarly, the electrode 33 </ b> A is provided so as to straddle one first wall portion 61 of the two adjacent first wall portions 61 of the partition wall member 6 in a plan view. The electrode 34 </ b> A is provided so as to straddle the other first wall 61 of the two adjacent first walls 61 of the partition wall member 6 in plan view.
The display device 20A according to the second embodiment as described above can also exhibit excellent display characteristics.

<Third Embodiment>
FIG. 7 is a cross-sectional view schematically showing a schematic configuration of a display device according to the third embodiment of the present invention, and FIG. 8 is a plan view of the display device shown in FIG.
Hereinafter, the third embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
The display device according to the third embodiment of the present invention is the same as the display device of the first embodiment described above except that the configuration of the first electrode is different. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

A display device 20B shown in FIG. 7 includes a substrate 11B and a plurality of first electrodes 3B in place of the substrate 11 in the display device 20 of the first embodiment described above.
The substrate 11 </ b> B is obtained by omitting the plurality of first electrodes 3 from the substrate 11 of the first embodiment described above, and includes a base 1. A reflective member 8 is provided on the upper surface of the substrate 11B.

The plurality of first electrodes 3B include a first electrode 3B (electrode 31B) provided on the side surface having the reflecting surface 81 of the reflecting member 8 and a first electrode provided on the side surface having the reflecting surface 82. 3B (electrode 32B), a first electrode 3B (electrode 33B) provided on the side surface having the reflective surface 83, and a first electrode 3B (electrode 34B) provided on the side surface having the reflective surface 84 including.
Thus, by providing the electrodes 31B to 34B on the side surface of the reflecting member 8, the electric field generated between the electrodes 31B to 34B and the second electrode 4 can be efficiently applied to the dispersion liquid 100.

Further, the electrodes 31B to 34B are provided unevenly on the lower side (substrate 11B side) of the side surface of the reflecting member 8. Accordingly, the electric field generated between the electrodes 31B to 34B and the second electrode 4 may cause the black particles 52 to be unevenly distributed in the white display state and the white particles 51 to be unevenly distributed in the black display state. it can.
In the present embodiment, each first electrode 3B has a quadrangular shape (more specifically, a rectangular shape) in plan view. In addition, the planar view shape of the 1st electrode 3B is not limited to this, For example, a trapezoid, a triangle, etc. may be sufficient.
The display device 20B according to the third embodiment as described above can also exhibit excellent display characteristics.

<Fourth embodiment>
FIG. 9 is a plan view schematically showing a schematic configuration of a display device according to the fourth embodiment of the present invention.
Hereinafter, the fourth embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
The display device according to the fourth embodiment of the present invention is the same as the display device of the first embodiment described above except that the configuration of the first electrode is different. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

The display device 20C shown in FIG. 9 is formed by integrating the electrode 31A and the electrode 33A out of the four electrodes 31A, 32A, 33A, and 34A in each set in the display device 20A of the second embodiment described above. 32A and electrode 34A are integrated.
This display device 20C includes a plurality of first electrodes 3C instead of the plurality of first electrodes 3 in the display device 20 of the first embodiment described above.

The plurality of first electrodes 3C are arranged in a matrix in a direction inclined by 45 degrees with respect to the X-axis direction and the Y-axis direction in plan view.
Further, each first electrode 3C has a quadrangular shape (more specifically, a rectangular shape) in plan view.
The display device 20C according to the fourth embodiment as described above can also exhibit excellent display characteristics.

<Fifth Embodiment>
FIG. 10 is a plan view schematically showing a schematic configuration of a display device according to the fifth embodiment of the present invention.
Hereinafter, the fifth embodiment will be described with a focus on differences from the above-described embodiments, and description of similar matters will be omitted.
The display device according to the fifth embodiment of the present invention is the same as the display device of the first embodiment described above except that the configuration of the first electrode is different. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

A display device 20D shown in FIG. 10 is obtained by integrating two first electrodes 3C in the display device 20C of the fourth embodiment described above.
The display device 20D includes a plurality of first electrodes 3D instead of the plurality of first electrodes 3 in the display device 20 of the first embodiment described above.
The plurality of first electrodes 3D are arranged in a matrix in a direction inclined by 45 degrees with respect to the X-axis direction and the Y-axis direction in plan view.
Each first electrode 3D (pixel electrode) has a quadrangle (more specifically, a square) in plan view.
The display device 20D according to the fifth embodiment as described above can also exhibit excellent display characteristics.

<Sixth Embodiment>
FIG. 11 is a plan view schematically showing a schematic configuration of a display device according to the sixth embodiment of the present invention.
Hereinafter, the sixth embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
The display device according to the sixth embodiment of the present invention is the same as the display device of the first embodiment described above except that the configuration of the first electrode is different. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

A display device 20E shown in FIG. 11 is obtained by integrating the four electrodes 31, 32, 33, and 34 of each set in the display device 20 of the first embodiment described above.
The display device 20E includes a plurality of first electrodes 3E instead of the plurality of first electrodes 3 in the display device 20 of the first embodiment described above.
The plurality of first electrodes 3E are arranged in a matrix in the X-axis direction and the Y-axis direction in plan view.

Each first electrode 3E is provided corresponding to each region S divided by the partition member 6.
Each first electrode 3E has a quadrangular shape (more specifically, a square shape) in plan view.
The display device 20E according to the sixth embodiment as described above can also exhibit excellent display characteristics.

<Seventh embodiment>
12 is a schematic diagram showing a schematic configuration of a display device according to a seventh embodiment of the present invention, and FIG. 13 is a cross-sectional view schematically showing a schematic configuration of the display sheet shown in FIG.
Hereinafter, the seventh embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above.

As shown in FIG. 12, the display device 20F of the present embodiment includes a display sheet 21F and a writing device 22F.
As shown in FIG. 13, the display sheet 21F includes a substrate (first substrate) 12F, a substrate (second substrate) 11F disposed opposite to the substrate 12F, and a display provided between the substrates 12F and 11F. It has the layer 400, the partition member 6 provided in the display layer 400, and the sealing part 9 which seals the display layer 400. Since the substrates 12F and 11F have the same configuration as the base 2 of the substrate 12 of the first embodiment described above, description thereof is omitted.

  The writing device 22F is a device used when writing a desired image (pattern, color, character, picture, or a combination thereof) on the display sheet 21F. As shown in FIG. 12, the writing device 22F is common to a base 221F, a sheet-like common electrode 222F provided on the base 221F, and a writing pen (input tool) 224F provided with a partial electrode 223F at the tip. Voltage application means 225F for applying a voltage between the electrode 222F and the partial electrode 223F.

Such a display device 20F is used as follows, for example.
First, the display sheet 21F in which the entire display surface is in a white display state is placed on the common electrode 222F of the writing device 22F with the display surface facing upward. Next, a voltage at which the partial electrode 223F side has a low potential is applied between the common electrode 222F and the partial electrode 223F by the voltage applying unit 225F. In this state, when the writing pen 224F is moved along a desired locus while being in contact with the display surface, particles migrate in an area corresponding to the locus, and the display color changes from white to black.
According to such a display device 20F, a desired character or the like can be drawn on the display surface of the display sheet 21F with the same feeling as drawing a character or the like on paper with a pencil. Therefore, the operability (operation feeling) of the display device 20F is improved.

(Electronics)
The display device as described above can be incorporated into various electronic devices. Such an electronic device has excellent reliability. Hereinafter, the electronic apparatus of the present invention will be described.
[Electronic paper]
First, an embodiment when the electronic apparatus of the present invention is applied to electronic paper will be described.
FIG. 14 is a perspective view showing an embodiment when the electronic apparatus of the present invention is applied to electronic paper.
An electronic paper 600 shown in FIG. 14 includes a main body 601 composed of a rewritable sheet having the same texture and flexibility as paper, and a display unit 602. In such electronic paper 600, the display unit 602 includes the display device 20 as described above.

[display]
Next, an embodiment when the electronic apparatus of the present invention is applied to a display will be described.
FIG. 15 is a diagram showing an embodiment when the electronic apparatus of the present invention is applied to a display. Among these, (a) in FIG. 15 is a sectional view and (b) is a plan view.
A display 800 shown in FIG. 15 includes a main body portion 801 and an electronic paper 600 that is detachably attached to the main body portion 801. The electronic paper 600 has the same configuration as described above, that is, the configuration shown in FIG.

  The main body 801 has an insertion port 805 into which the electronic paper 600 can be inserted on its side (right side in FIG. 15A), and two pairs of conveying rollers 802a and 802b are provided inside. Yes. When the electronic paper 600 is inserted into the main body 801 through the insertion port 805, the electronic paper 600 is installed in the main body 801 in a state of being sandwiched between the pair of conveyance rollers 802a and 802b.

  A rectangular hole 803 is formed on the display surface side of the main body 801 (the front side in FIG. 15B), and a transparent glass plate 804 is fitted in the hole 803. . Thereby, the electronic paper 600 installed in the main body 801 can be viewed from the outside of the main body 801. That is, in the display 800, the display surface is configured by visually recognizing the electronic paper 600 installed in the main body 801 on the transparent glass plate 804.

In addition, a terminal portion 806 is provided at the leading end of the electronic paper 600 in the insertion direction (left side in FIG. 15A), and the electronic paper 600 is installed in the main body 801 inside the main body 801. A socket 807 to which the terminal portion 806 is connected in the state is provided. A controller 808 and an operation unit 809 are electrically connected to the socket 807.
In such a display 800, the electronic paper 600 is detachably installed on the main body 801, and can be carried and used while being detached from the main body 801. This improves convenience.

  Note that the electronic apparatus of the present invention is not limited to the application to the above, and for example, a television, a viewfinder type, a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, an electronic Examples include newspapers, word processors, personal computers, workstations, videophones, POS terminals, and devices equipped with touch panels. The display device of the present invention can be applied to the display units of these various electronic devices. is there.

As described above, the display sheet, the display device, and the electronic apparatus according to the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each unit may be any arbitrary function having the same function. It can be replaced with that of the configuration. In addition, any other component may be added to the present invention. Moreover, you may combine each embodiment suitably.
In the above-described embodiment, the white particles 51 and the black particles 52 are charged particles that are charged to opposite poles. However, the present invention is not limited to this. For example, one of the white particles 51 and the black particles 52 is positive or negative. It is also possible to use charged particles that are electrically charged and non-charged particles that are not substantially charged.
In this case, it is preferable to use black particles as charged particles and white particles as uncharged particles. In this case, when black particles are collected on the first electrode side, a white display state is obtained, and when black particles are collected on the second electrode side, a black display state is obtained. Further, by dispersing the white particles, light from the display surface can be reflected and diffused more efficiently, and white with higher reflectivity can be displayed.

Moreover, although embodiment mentioned above demonstrated what the average particle diameter of a white particle and a black particle is mutually equal, it is not limited to this, A mutual average particle diameter may differ.
In the above-described embodiment, the configuration in which the partition wall member has a lattice shape has been described. However, the configuration of the partition wall member 6 is not limited to this. It may be done.

DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Base 3 ... 1st electrode 3A ... 1st electrode 3B ... 1st electrode 3C ... 1st electrode 3D ... 1st electrode 3E ... 1st electrode 4 ... 2nd electrode 5 ... Particle 6 ... Partition member 7 ... Dispersion medium 8 ... Reflecting member 9 ... Sealing part 11 ... Substrate 11A ... Substrate 11B ... Substrate 11F ... Substrate 12 ... Substrate 12F ... Substrate 20 ... Display device 20A ... Display device 20B ... Display device 20C ... Display device 20D ... Display device 20E ... Display device 20F ... Display device 21 ... Display sheet 21A ... Display Sheet 21B ... Display sheet 21C ... Display sheet 21D ... Display sheet 21F ... Display sheet 22 ... Circuit board 22A ... Circuit board 22B ... Circuit board 22F ... Writing device 31 ... Electrode 31 A ... Electrode 31B ... Electrode 32 ... Electrode 32A ... Electrode 32B ... Electrode 33 ... Electrode 33A ... Electrode 33B ... Electrode 34 ... Electrode 34A ... Electrode 34B ... Electrode 51 ... White particles 52 Black particles 61 ... Wall part 62 ... Wall part 81 ... Reflective surface 82 ... Reflective surface 83 ... Reflective surface 84 ... Reflective surface 100 ... Dispersion liquid 121 ... Top surface 221F ... Pedestal 222F ... Common electrode 223F ... Partial electrode 224F ... Pen 225F ... Voltage application means 400 ... Display layer 600 ... Electronic paper 601 ... Main unit 602 ... Display unit 800 ... Display 801 ... Main unit 802a ... Conveying roller Pair 802b ... Transport roller pair 803 ... Hole 804 ... Transparent glass plate 805 ... Insertion slot 806 ... Terminal part 807 ····················································· Controller 809 ··········· Operation area S ··· Area θ ··· Inclination angle

Claims (13)

A first substrate;
A second substrate disposed opposite to the first substrate;
A display layer provided between the first substrate and the second substrate and filled with a dispersion liquid in which at least one kind of positively or negatively charged particles is dispersed in a dispersion medium;
A partition member provided in the display layer and having a plurality of wall portions that divide the display layer into a plurality of regions in a plan view of the display layer;
A display sheet comprising: a plurality of reflecting members provided in the plurality of regions, each having a reflecting surface inclined with respect to a normal line of the surface on the display layer side of the first substrate.   Each of the reflecting members has a polygonal pyramid shape having a bottom surface and a plurality of side surfaces, the bottom surface is provided along a surface on the display layer side of the first substrate, and each of the side surfaces constitutes the reflecting surface. The display sheet according to claim 1.   The display sheet according to claim 2, wherein the bottom surface of each reflection member has a shape similar to a planar view shape of each region.   The display sheet according to claim 1, wherein a height of the reflecting member is equal to a height of the partition member. A plurality of first electrodes provided on the first substrate side with respect to the display layer;
The display sheet according to claim 2, further comprising a second electrode provided on the second substrate side with respect to the display layer.   6. The plurality of first electrodes includes a plurality of electrodes provided side by side in a circumferential direction around a vertex of the polygonal pyramid shape of each of the reflecting members in a plan view of the display layer. Display sheet.   The display sheet according to claim 5 or 6, wherein the plurality of first electrodes include a pair of electrodes facing each other through the wall portion in a plan view of the display layer.   The display sheet according to any one of claims 5 to 7, wherein the plurality of first electrodes include electrodes straddling the wall portion in a plan view of the display layer.   The display sheet according to claim 5, wherein the first electrode is provided between the first substrate and the reflecting member.   The display sheet according to claim 5, wherein the first electrode is provided on the side surface of the reflecting member.   The said sheet | seat member is a display sheet in any one of Claim 1 thru | or 10 which has a light transmittance.   A display device comprising the display sheet according to claim 1.   An electronic apparatus comprising the display device according to claim 12.

Images