JP2011027815A - Electrooptical device and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device securing sufficient durability. <P>SOLUTION: A display panel 18 holds a functional layer including an organic EL layer between a pair of glass substrates, in the display 100. Glass as an inorganic substance has high barrier property, since barrier property of the glass for water is excellent rather than a resin such as PET. Furthermore, a laminate structure configured by stacking the display panel 18 on a magnet sheet 30 is laminated from the surface and the rear surface with two resin films 25a, 25b. In other words, since the magnet sheet 30 is also included in the laminate 25, deterioration of the magnet sheet 30 is prevented. Thus, the reliable display 100 durable in actual use is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electro-optical device and an apparatus including the electro-optical device.

  Organic EL (Electro Luminescence) display devices, which are self-luminous devices, are easier to make thinner than liquid crystal display devices that require lighting devices such as backlights, and therefore various applications that use their thinness and lightness. Has been proposed.

For example, in Patent Document 1, an organic EL panel that emits white light is used as a surface light source, a translucent panel on which a message such as an advertisement is written is pasted on the surface of the panel, and a magnet sheet is provided on the back surface. A display device is disclosed. According to the display device, by adhering the magnet sheet to the side surface of the body of an automobile, it is possible to carry out outdoor advertising activities day and night. Moreover, even if the side surface of the body is a curved surface, it can be attached and detached with good followability.
The display device has a configuration in which the entire organic EL panel whose surface (counter substrate) is composed of a PET sheet is sandwiched between two front and back surfaces by two exterior PET films, and is sealed and fixed. Moreover, the magnet sheet was affixed on the outer side of the backside exterior PET film.

JP 2004-151629 A

However, the conventional display device has a problem that it is difficult to ensure reliability that can withstand actual use. Specifically, the organic thin film layer including the light-emitting layer used in the organic EL panel dislikes moisture, so a sufficient sealing structure is necessary. However, a sealing structure in which two resin films are stacked is insufficient. Therefore, it is difficult to prevent deterioration of the organic thin film layer. In other words, it is difficult to secure a sufficient barrier property to prevent the ingress of moisture in the sealing structure only of the organic barrier layer made of an organic substance.
Further, since the magnet sheet is exposed to the outside, there is a problem that the sheet is also deteriorated. Specifically, since the magnetic sheet is formed by mixing magnetic powder with a binder resin such as rubber or elastomer, for example, when magnetic powder containing rare earth metal capable of obtaining high magnetic force is used, the magnetic powder is It sometimes rusted and exposed on the surface.
Further, since the magnet sheet is repeatedly bent along with attachment and detachment in a state exposed to the outside air, there has been a problem that the binder resin is easily deteriorated and cracks are easily generated. When cracks occur, there is a problem that the magnetic powder is exposed to the surface or scattered. Thus, the conventional display device has a problem that it does not have sufficient durability performance.
In addition, in order to change the display contents with a conventional display device, it is necessary to replace the translucent panel on which advertisements are described every time the change is made, and there is a problem in that it is not easy to use.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following application examples or forms.

(Application example)
A display panel having a display region in which an electro-optic layer is sandwiched between a magnet sheet and a pair of glass substrates and a plurality of pixels are formed, and a laminated structure in which the display panel is stacked on the magnet sheet is displayed on the display region side. And a resin film that covers and laminates from the first surface side and the second surface side facing the first surface.

According to this electro-optical device, the display panel has a configuration in which the electro-optical layer is sandwiched between a pair of glass substrates. Since glass which is an inorganic substance has a barrier property against moisture as compared with a resin such as PET, an electro-optical layer such as an organic thin film layer is sandwiched between a pair of glass substrates, so that the surface substrate is provided with PET. A higher barrier property can be ensured than a conventional organic EL panel using a sheet.
Further, the laminated structure in which the display panel is overlaid on the magnet sheet is laminated from the front and back surfaces by two resin films.
According to this, since the display panel having an excellent barrier property even by a single product is laminated from the front and back surfaces by two resin films, a sufficient barrier property that can withstand actual use can be ensured.
Accordingly, it is possible to provide an electro-optical device that ensures sufficient reliability.

Further, since the magnet sheet is also contained in the laminate structure composed of two resin films, the deterioration of the sheet can be suppressed as compared with the conventional display device in which the magnet sheet is exposed to the outside.
Therefore, it is possible to provide an electro-optical device that ensures sufficient durability performance.
Furthermore, since the display panel has a display area in which a plurality of pixels are formed, the display area is different from the conventional display device in which the translucent panel needs to be replaced every time the display content is changed. The display content can be changed simply by changing the supplied image signal.
Therefore, an electro-optical device that is easy to use can be provided.

Further, it is preferable to further include a plate member having magnetism approximately the same as that of the magnet sheet in a plan view, and the laminated structure is configured such that the plate member is sandwiched between the magnet sheet and the display panel.
In addition, the display panel is formed with an overhang region in which one side of one of the glass substrates extends beyond the other glass substrate, and one end of the flexible substrate is connected to the overhang region. It is preferable that one end of the flexible substrate is covered with the resin film, and the other end of the flexible substrate protrudes from the outer shape of the resin film on one side.

A structure in which an electro-optic layer is sandwiched between a magnet sheet and a pair of glass substrates, and a display panel having a display area in which a plurality of pixels are formed, and a structure in which a magnet sheet is disposed next to at least one side of the display panel An electro-optical device comprising: a first film side on a display area side; and a resin film that covers and laminates from a second surface side facing the first surface.
In addition, the display panel is formed with an overhanging region in which one side of one of the glass substrates overhangs the other glass substrate, and the magnet sheet excludes the overhanging region of the display panel. Of these three sides, it is preferable to be arranged next to at least any one side.
In addition, one end of the flexible substrate is connected to the overhang region, and one end of the flexible substrate is covered with the resin film, and the other end of the flexible substrate protrudes from the outer shape of the resin film on one side. preferable.

The magnet sheet is made of a sheet-like binder resin containing magnetic powder, the resin film is made of a polyethylene copolymer material, and the pair of glass substrates of the display panel is set to a thickness of 100 μm or less. It is preferable that
The binder resin is preferably a polyethylene copolymer material.
The electro-optical layer is preferably an organic EL layer including an organic light emitting layer.
Moreover, it is preferable that the laminated resin film is formed with a handle portion extending in a planar manner from the peripheral edge portion.

  An apparatus comprising: the electro-optical device described above; and a controller that supplies at least an image signal and power to the electro-optical device.

FIG. 3 is a perspective view illustrating one embodiment of a display device according to Embodiment 1. The side sectional view of the display in the ff section of Drawing 1. The enlarged view of the d section in FIG. (A)-(c) The figure which shows the magnetization aspect of a magnet sheet. The flowchart figure which shows the flow of the manufacturing method of a display apparatus. The figure which shows the manufacture aspect in each process of (a), (b). FIG. 6 is a side sectional view of a display device according to a second embodiment. (A) The top view of the display apparatus which concerns on Embodiment 3, (b) The side sectional view in the ii cross section of (a), (c) The side sectional view in the jj cross section of (a). (A)-(c) The top view of the display apparatus in a different arrangement | positioning aspect. (A) The perspective view which shows the electric refrigerator as an apparatus, (b) The top view which shows the white board as an apparatus. (A) The top view of the display apparatus which concerns on the modification 1, (b) The side sectional view in the kk cross section of (a). FIG. 12 is a side sectional view of a display panel according to Modification 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each layer and each part is different from the actual scale so that each layer and each part can be recognized on the drawing.

(Embodiment 1)
"Overview of display device"
FIG. 1 is a perspective view showing an aspect of the display device according to the present embodiment. FIG. 2 is a side sectional view of the display device taken along the line ff of FIG.
First, an outline of the display device 100 as an electro-optical device according to Embodiment 1 of the present invention will be described.

The display device 100 is a flexible organic EL display device including a display panel 18 that is a thin organic EL panel. Moreover, since the magnet sheet 30 is provided on the back surface of the display panel 18, it can be used by being attached to a magnetic plate-like member such as a board surface of a white board. Specifically, the organic EL display device has a structure in which a laminated structure in which a display panel 18 is stacked on a magnet sheet 30 is laminated by two resin films 25a and 25b. In the following description, a structure in which the laminated structure is laminated is referred to as a laminate structure 25.
The display panel 18 includes a display region V composed of a plurality of pixels arranged in a matrix. In order to ensure flexibility, the total thickness is set to 100 μm or less. In the display area V, red (R), green (G), and blue (B) color pixels are periodically arranged, and a full color image is displayed by display light emitted from each pixel. Note that the display panel is not limited to a display panel that performs color display, and may be a display panel that performs monochrome display. The display area V has a vertically long rectangle. In each drawing including FIG. 1, the vertical direction is defined as the Y-axis direction, and the horizontal direction shorter than the vertical direction is defined as the X-axis direction. The thickness direction of the display panel 18 is the Z-axis direction. The surface on the display area V side is referred to as a front surface as the first surface, and the opposite surface is referred to as a back surface as the second surface.

The outer shape of the display panel 18 is a vertically long rectangle that is slightly larger than the display area V, although the proportion of the width in the X-axis direction is increased by an overhang area 1e described later. The laminate structure 25 also has a vertically long rectangle, and the size of the laminate structure 25 covers the outer periphery of the display panel 18.
As shown in FIG. 2, the magnet sheet 30 is formed in substantially the same size as the display panel 18. In other words, the size of the planar magnet sheet 30 is set to be substantially the same as that of the display panel 18.
Further, as will be described in detail later, since the material and thickness of the display panel 18 and the magnet sheet 30 are optimized, sufficient barrier properties and appropriate bending when affixed to the board surface of a whiteboard, etc. It is possible and flexible.

The display panel 18 is composed of an element substrate 1 and a CF (color filter) substrate 16, and an extended region 1 e in which one side of the element substrate 1 extends from the CF substrate 16 is formed at one end thereof. Yes.
A flexible substrate 20 is connected to the overhang region 1e. The flexible board is an abbreviation for a flexible printed circuit board having flexibility in which an iron foil wiring or the like is formed on a polyimide film base. In addition, a driving IC (Integrated Circuit) 21 is mounted on the flexible substrate 20, and a plurality of terminals for connection to a dedicated controller or an external device (none of which are shown) are formed at the end thereof. Has been.
The display device 100 displays images, characters, and the like in the display region V by receiving supply of control signals including power and image signals from an external device via the flexible substrate 20.

"Detailed configuration of the display panel"
FIG. 3 is an enlarged view of a portion d in the display panel 18 of FIG.
Next, a detailed configuration of the display panel 18 will be described.
The display panel 18 includes an element substrate 1, an element layer 2, a planarizing layer 4, a pixel electrode 6, a partition wall 7, an organic EL layer 8 as an electro-optic layer, a common electrode 9, an electrode protective layer 10, a buffer layer 11, and a gas barrier layer. 12, a filler 13, a CF layer 14, a CF substrate 16, and the like. A portion sandwiched between the element substrate 1 and the CF substrate 16 is referred to as a functional layer 17. In other words, the laminated structure from the element layer 2 to the CF layer 14 is referred to as a functional layer 17.
The element substrate 1 is made of transparent inorganic glass. In this embodiment, alkali-free glass is used as a suitable example.
In the element layer 2, a pixel circuit for actively driving each pixel is formed. The pixel circuit includes a selection transistor for selecting a pixel made of a TFT (Thin Film Transistor), a driving transistor 3 for flowing a current to the organic EL layer 8, and the like, which are formed corresponding to each pixel. Has been. The pixel circuit uses low-temperature polysilicon as the active layer as a preferred example, but may have a configuration using amorphous silicon as the active layer.

In the upper layer (Z-axis (−) direction) of the element layer 2, for example, a planarization layer 4 that is an insulating layer made of an acrylic resin or the like is formed.
The reflective layer 5 and the pixel electrode 6 are laminated in this order on the flattening layer 4 so as to be divided for each pixel. The reflection layer 5 is a reflection layer made of, for example, aluminum, and reflects light traveling from the organic EL layer 8 toward the element substrate 1 to make light that contributes to display.
The pixel electrode 6 is composed of a transparent electrode such as ITO (Indium Tin Oxide) or ZnO, and is connected to a drain terminal of the driving transistor 3 of the element layer 2 and a contact hole penetrating the planarization layer 4 for each pixel. ing.
The partition wall 7 is made of a photocurable black resin or the like, and partitions each pixel in a lattice shape in a plane. Note that the pixel circuit including the driving transistor 3 in the element layer 2 is disposed so as to overlap the partition in a planar manner in order to prevent malfunction due to light.

The organic EL layer 8 is formed so as to cover the pixel electrode 6 and the partition wall 7. In FIG. 3, the structure is a single layer. Actually, each layer is composed of a hole transport layer, a light emitting layer, an electron injection layer, and the like made of an organic thin film. Are stacked. The hole transport layer is made of a sublimable material such as aromatic diamine (TPAB2Me-TPD, α-NPD). The light emitting layer is composed of an organic light emitting material thin film composed of a multilayer that emits white light formed by combining three colors of red, green, and blue. The electron injection layer is made of LiF (lithium fluoride) or the like.
The common electrode 9 is a metal thin film layer in which a metal such as MgAg is formed very thin so as to transmit light. Further, a transparent conductive film such as a metal oxide such as ZnO or a metal nitride layer such as TiN may be stacked in order to lower the resistance.

Electrode protective layer 10, SiO ₂ or, Si ₃ N _4, SiOxNy transparent such, and is configured of a material having a function of blocking water by density.
The buffer layer 11 is a transparent organic buffer layer such as a thermosetting epoxy resin.
The gas barrier layer 12 is a transparent sealing layer such as SiO ₂ , Si ₃ N ₄ , or SiOxNy, and has a function of blocking moisture due to high density, and prevents moisture from entering the organic EL layer 8. Take on the function.
The filler 13 is a transparent adhesive layer made of, for example, a thermosetting epoxy resin, and fills the uneven surface between the gas barrier layer 12 and the CF layer 14 and bonds them together. Further, it also functions to prevent moisture from entering the organic EL layer 8 from the outside.

The CF substrate 16 is made of the same inorganic glass as the element substrate 1, and the CF layer 14 is formed on the organic EL layer 8 side (Z axis (+) side).
In the CF layer 14, a red color filter 14r, a green color filter 14g, and a blue color filter 14b are arranged similarly to the pixel arrangement. Specifically, the color filters of each color are arranged so as to overlap with the corresponding pixel electrodes 6, and light shielding portions indicated by hatching are formed between the color filters. The light shielding portion is formed in a lattice shape so as to overlap the partition wall 7 in a plan view, and optically functions as a black matrix.
The CF substrate 16 and the element substrate 1 are bonded and sealed with a sealing agent 15 formed on the peripheral edge of the CF substrate 16. As the sealant 15, an epoxy adhesive, an ultraviolet curable resin, or the like is used.

From each pixel configured in this manner, display light corresponding to the color tone of the color filter is emitted. For example, in the case of a red pixel, white light emitted from the organic EL layer 8 is selected by the red color filter 14r and emitted from the CF substrate 16 as red display light. The same applies to green and blue pixels.
Thereby, in the display area V, a full-color image is displayed by display light from the plurality of color pixels emitted from the CF substrate 16.
The configuration of the display panel 18 is not limited to the top emission type, and may be a configuration in which an electro-optical layer is sandwiched between two glass substrates. For example, a bottom emission type organic EL display device that emits light emitted from the organic EL layer 8 from the element substrate 1 side may be used. Moreover, the inorganic EL display device provided with inorganic EL as a light source may be sufficient.

As described with reference to FIG. 2, the flexible substrate 20 is connected to the overhang region 1 e where one side of the element substrate 1 overhangs from the CF substrate 16. The flexible substrate 20 is electrically connected to the transparent electrode formed on the element substrate 1 by an anisotropic conductive adhesive film or the like.
Here, since the mechanical strength is insufficient only by the connection with the anisotropic conductive adhesive film, conventionally, the connection portion of the flexible substrate 20 is covered and molded with silicon resin (adhesive) or the like to be reinforced. However, there was a problem of easy peeling.
In this embodiment, sufficient practical strength and flexibility are ensured by making the resin films 25a and 25b function as adhesives (fillers) instead of this reinforcing structure. The resin film adhesion method (lamination method) will be described later.

“Magnet sheet material and magnetic force”
Returning to FIG.
Next, the material of the magnet sheet 30 and the required magnetic force will be described.
The magnet sheet 30 needs to have functions such as a magnetic force that can support the entire display device 100 at the time of attachment, heat dissipation that absorbs and dissipates heat generated by the display panel 18, and flexibility.
In the present embodiment, a sheet member formed by thermoforming a thermoplastic resin blended with magnetic powder is used for the magnet sheet 30. In other words, a magnet powder is added to a thermoplastic resin as a binder, and a sheet-like bonded magnet formed by extrusion molding is cut into a predetermined size to obtain a magnet sheet 30.
As a preferred example, an ethylene-vinyl acetate copolymer (EVA) is used as the thermoplastic resin. Further, as the magnetic powder, rare earth magnetic powder containing rare earth metal such as Nd—Fe—B, Sm—Co, or Sm—Fe—N having excellent magnetic properties is used.

4 (a) to 4 (c) are diagrams showing a magnetization mode of the magnet sheet.
In this embodiment, as a preferred example, as shown in FIG. 4A, the magnet sheet 30 is subjected to single-sided multipolar magnetization. In addition, each figure of FIG. 4 is a sectional side view of the magnet sheet which extracted only the magnet sheet 30 from FIG.
Single-sided multipolar magnetization is a method of applying a magnetic force to one surface of the magnet sheet 30 and magnetizing it. In the case of FIG. It is magnetized so that poles / S poles appear alternately.
Further, the orientation direction of the N pole / S pole in the crystal of the magnetic powder is substantially aligned with the Z-axis direction. In other words, the crystal arrangement of the magnetic powder has anisotropy.

In addition, it is not limited to the said structure, What is necessary is just the structure from which the desired magnetic force is obtained in the thickness mentioned later. For example, as the thermoplastic resin, a thermoplastic elastomer such as olefin, polyamide, nylon, or styrene may be used. Alternatively, rubber may be used as the binder. In this case, the rubber to which the magnetic powder is added is vulcanized and cured to form a sheet-like bonded magnet.
Moreover, as magnetic powder, you may use magnetic powder, such as an alloy magnet and a ferrite magnet.
Further, the magnetization mode may be double-sided multipole magnetization in which the front and back surfaces of the magnet sheet 30 are respectively magnetized as shown in FIG. Specifically, the surface of the magnet sheet 30 is magnetized so that N poles / S poles alternately appear in the X axis direction, and on the back side, S poles / N poles are alternately arranged in the X axis direction. The overlapping portions are magnetized so as to be paired with S poles / N poles. Moreover, as shown in FIG.4 (c), the double-sided magnetization magnetized so that the whole surface of the magnet sheet 30 may become N pole and the whole back surface may become S pole may be sufficient.

The magnetic force of the magnet sheet 30 is set in view of the weight, area, bending rigidity, etc. of the display device 100. In other words, considering the weight, area, bending rigidity, etc. of the display device 100, the size of the magnet sheet 30, the type of magnetic powder to be used, the amount of addition, and the like are set as appropriate. Also, it is necessary to consider the thickness of the resin film that is the distance between the magnet sheet 30 and the adherend.
In the present embodiment, as a suitable example, the magnetic force of the magnet sheet 30 is set to be an attractive force within a range of about 50 times the weight of the display device 100. This is because the display device 100 is attached and detached at a considerable frequency in a company (indoor environment), for example, pasted on a white board in FIG. 10B or a metal file cabinet. This is because it is assumed to be used in the above.
Note that the present invention is not limited to the above-described configuration, and it may be set so that the suction force is in the range of 30 to 300 times the weight of the display device 100 according to the required specifications in the application of the display device 100.
That is, the magnetic force (attraction force) required for the magnet sheet 30 differs depending on the use of the display device 100, such as whether importance is attached to attachment / detachment or difficulty in removal (removal). What is necessary is just to determine suitably in the range of 30 to 300 times according to a specification.

"Materials of resin film"
Returning to FIG.
Here, the material of the two resin films 25a and 25b constituting the laminate structure 25 will be described.
The laminated structure in which the display panel 18 is overlaid on the magnet sheet 30 is covered from the front and back surfaces, and the resin films 25a and 25b to be laminated are adhered to the glass substrate and the magnet sheet 30, flexible, and transparent (light extraction property). ), Moldability (insulation and heat resistance) of the flexible substrate 20 and water resistance to prevent moisture from entering the inside are required.
In order to satisfy these functions, the resin films 25a and 25b are preferably made of a resin based on polyethylene having water resistance (low water absorption), insulation, flexibility, transparency, and low-temperature weldability. Moreover, it is more preferable that it is a copolymer partially having a polar group in order to improve adhesiveness.
In the present embodiment, as a suitable example, an ethylene-vinyl acetate copolymer (EVA), which is a kind of polyethylene copolymer, is employed as the material of the resin films 25a and 25b.

In addition, it is not limited to EVA, What is necessary is just a polyethylene-type copolymer which has the same function.
For example, polyethylene terephthalate (PET), ethylene-hydroxyalkyl methacrylate copolymer, ethylene-alkoxyethyl methacrylate copolymer, ethylene-aminoethyl methacrylate copolymer, ethylene-hydroxyglycidyl methacrylate copolymer, ethylene -It is preferable to use any one of vinyl alcohol copolymer (EVOH), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), and ethylene-alkyl acrylate copolymer. Alternatively, a copolymer obtained by combining two or more of these (for example, an ethylene-vinyl acetate-vinyl alcohol copolymer is a copolymer excellent in adhesion between both glass and CFRP), or a mixture is used. There may be.

  Moreover, in order to improve heat resistance, you may contain hardening components, such as amine compounds, such as an epoxy compound, an isocyanate compound, and a polyethyleneimine, as a crosslinking agent. In addition, when using the material which has the carboxyl group which is not esterified among ethylene copolymers, such as ethylene-acrylic acid copolymer (EAA) and ethylene-methacrylic acid copolymer (EMAA), low-temperature weldability However, it is preferable to crosslink by heat in combination with a crosslinking component such as an epoxy-based curing agent so that acrylic acid does not remain.

“About the thickness of each part”
Here, the optimum thickness of each part necessary for the display device 100 to have flexibility, barrier properties (sealing structure), and detachability will be described.
First, the thickness of the magnet sheet 30 will be described.
In the present embodiment, as a preferred example, the thickness of the magnet sheet 30 is about 100 μm. However, the present invention is not limited to this, and the thickness may be appropriately set within the range of 50 to 350 μm in consideration of the balance between the thickness and the magnetic force according to the required specifications for the application of the display device 100.

Returning to FIG.
Next, the thickness of the display panel 18 will be described. The display panel 18 is filled with an all-solid material having no hollow structure between the substrates in order to obtain an adhesive strength that can withstand flexibility.
In FIG. 3, in order to clarify the stacking relationship between the constituent parts, in particular, the scale of the functional layer 17 is enlarged as compared with other parts, but in reality, the functional layer 17 is configured to be the thinnest part. become. The thickness of the functional layer 17 is about several μm to 20 μm. Among these, the buffer layer 11 occupies more than half the thickness. Incidentally, the thickness of the organic EL layer 8 composed of a plurality of thin films with a thickness of the order of nm is less than 1 μm.

In this embodiment, as a suitable example, the thickness of the element substrate 1 and the CF substrate 16 is about 40 μm. The total thickness of the display panel 18 is about 90 μm as a preferred example. According to the experiment results of the inventors, in order to ensure the reliability of the organic EL panel, in addition to the sealing structure such as the gas barrier layer 12, the element substrate 1 and the CF substrate 16 must have a thickness of about 10 μm or more. It is understood that. In other words, by setting the thicknesses of the element substrate 1 and the CF substrate 16 to about 10 μm or more, it is possible to ensure impact strength sufficient to withstand flexibility and sufficient moisture resistance.
On the other hand, when the thickness of the element substrate 1 and the CF substrate 16 is about 100 μm or more, it is understood that the flexibility is impaired.
For this reason, it is preferable to set the thicknesses of the element substrate 1 and the CF substrate 16 within the range of 10 to 100 μm, respectively. In consideration of the balance between strength and flexibility, it is more preferable that the thickness be in the range of 20 to 80 μm.
Further, the total thickness of the display panel 18 in which the element substrate 1 and the CF substrate 16 are overlapped is preferably set in a range of 50 to 120 μm in consideration of a balance between strength and flexibility.

  Note that the element substrate 1 and the CF substrate 16 are thinned by polishing or etching each having a thickness of about 0.3 to 0.7 mm in the initial stage. Preferably, after manufacturing a display panel in which the front and back glass substrates are thick, the display panel 18 having a desired thickness is obtained by etching using an etching solution (aqueous solution) in which hydrofluoric acid (hydrofluoric acid) is dissolved. Manufacturing. Note that the present invention is not limited to this method, and any method that can form the display panel 18 having a desired thickness may be used. For example, a mechanical polishing method may be used.

Returning to FIG.
Next, the thickness of the resin films 25a and 25b constituting the laminate structure 25 will be described.
In the present embodiment, as a suitable example, an EVA film having a thickness of about 50 μm is used for the resin films 25a and 25b. According to the results of experiments by the inventors, a thickness of about 20 μm or more is required to satisfy the coverage (fillability) of the step including the gap at the peripheral edge of the magnet sheet 30 and the display panel 18. Is understood.
Considering the balance between the coverage and the total thickness of the display device 100, it is preferably in the range of 20 to 100 μm. Moreover, when the cost of a resin film and the ease (workability | operativity) of lamination are considered, it is preferable to exist in the range of 40-80 micrometers.
In addition, the total thickness of the display device 100 formed by stacking the thickness portions according to the above-described preferred examples is about 290 μm.

  Note that the dimensions of the above preferred examples are one of preferred examples derived by the inventors from the experimental results and physical property data after creative ingenuity, and are not limited thereto. Within the range, dimensions can be set according to the application.

"Manufacturing method of display device"
FIG. 5 is a flowchart showing a flow of a manufacturing method of the display device. 6 (a) and 6 (b) are diagrams showing manufacturing modes in each step.
Here, the manufacturing method of the display device 100 will be described in detail along the flowchart of FIG.

In step S1, as shown to Fig.6 (a), it is set as the state which piled up each member (preparation body), and the laminating apparatus. Specifically, the magnet sheet 30, the display panel 18, and the resin film 25a are overlaid in this order on the resin film 25b. Although not shown in FIG. 6 (a), each member is overlapped using a dedicated guide plate, and planar alignment is also performed. Although this step is performed under a normal environment as a suitable example, it may be performed under a reduced pressure environment described later. A transparent adhesive may be applied in advance to the inner surfaces of the resin films 25a and 25b (the surface on the display panel 18 side). Examples of adhesives include thermosetting adhesives such as epoxy, urethane, and nylon, rubber flexible adhesives such as SBR, chloroprene, and nitrile rubber, or acrylic and synthetic rubber pressure sensitive. An adhesive or the like can be used.
Then, the preparation is set in the laminating apparatus. In FIG. 6A, only the pressure rollers 81 and 82 of the laminating apparatus are shown.

In step S2, the environment in which the laminating apparatus and the preparation body are installed is depressurized to form a decompressed environment. The laminating apparatus is installed in a chamber apparatus (room) that can set the internal environment to a desired atmospheric pressure environment. By this step, air (bubbles) inside the preparation body is removed (defoamed).
Further, in parallel, the pressure rollers 81 and 82 are heated, and the roller surface made of a heat-transferable elastomer is heated to a temperature of 80 to 120 ° C.
In step S3, as shown by the arrow in FIG. 6A, the preparation body is inserted between the pair of pressure rollers 81 and 82 from one side of the preparation body on the opposite side of the flexible substrate 20, and lamination is performed. Is called. In the portion sandwiched between the pressure rollers 81 and 82, the resin films 25a and 25b are dissolved by the heat of the rollers, and are further pressurized and bonded to each other. The dissolved resin film functions as an adhesive (filler) and covers and adheres the magnet sheet 30, the display panel 18, and the flexible substrate 20. In other words, each part of the resin film in which the adherend is dissolved is laminated integrally.
In addition, since the lamination is performed from one side to the other end of the preparation body, even if bubbles (air) remain in each member, the bubbles are pushed out to the other end side in the order of lamination. Then, as shown in FIG. 6B, the laminated display device 100 is pushed out between the pressure rollers 81 and 82 to complete the lamination.

In step S4, an annealing process is performed to remove residual stress in the laminated display device 100. The annealing process may be performed continuously in a reduced pressure environment or in a normal environment. In particular, when the resin films 25a and 25b contain a cross-linking component, it is preferable to perform an annealing treatment at about 100 ° C. to complete the cross-linking.
Note that the laminating apparatus is not limited to a roll laminating system including a pair of pressure rollers 81 and 82, and may be any apparatus that can laminate the prepared body to the completed state of the display device 100. For example, using a diaphragm-type vacuum laminating apparatus in which a preparation body is set on one plate-like heating plate (hot plate), a deformed rubber sheet is pressed against the preparation body by a pressure difference, and heated and pressurized. Also good.

As described above, according to the display device 100 and the manufacturing method according to the present embodiment, the following effects can be obtained.
According to the display device 100, the display panel 18 has a configuration in which a functional layer including an organic EL layer is sandwiched between a pair of glass substrates. Glass which is an inorganic substance has a higher barrier property against moisture than a resin such as PET, and therefore, higher barrier property can be ensured than a conventional organic EL panel using a PET sheet as a substrate on the surface.
Further, the laminated structure in which the display panel 18 is overlaid on the magnet sheet 30 is laminated from the front and back surfaces by two resin films 25a and 25b.
According to this, since the display panel 18 having an excellent barrier property even by a single product is further laminated from the front and back surfaces by the two resin films 25a and 25b, a sufficient barrier property that can withstand actual use is ensured. be able to. In other words, according to the sealing structure in which the display panel 18 having a sealing structure with a pair of glass substrates is further laminated with two resin films, moisture can surely enter the functional layer including the organic EL layer. Can be prevented.

Further, since the magnet sheet 30 is also included in the laminate structure 25, the deterioration of the magnet sheet 30 can be suppressed as compared with the conventional display device in which the magnet sheet is exposed to the outside.
Further, since the magnet sheet 30 is housed in the laminate structure 25 with a secured barrier property, rare earth magnetic powder containing a rare earth metal having a strong magnetic force can be used without worrying about rusting due to moisture. . In addition to the use of rare earth magnetic powder, the magnetic powder has anisotropy in the crystal arrangement, so that a sufficient magnetic force can be obtained even if it is thin.
On the other hand, since it is single-sided multipolar magnetization that magnetizes only the back surface of the magnet sheet 30, the influence of the magnetic field on the display panel 18 on the front surface side can be suppressed.

Moreover, although the binder of the magnet sheet 30 is EVA, since it contains magnetic powder containing a rare earth metal having a higher thermal conductivity than that of the resin, the thermal conductivity of the magnet sheet 30 is higher than that of the resin film made of EVA. Is getting higher.
Therefore, heat generated by the display panel 18 during image display can be efficiently absorbed. Further, in general use, the display device 100 is used in a state of being attached to an adherend such as a metal plate. Therefore, the absorbed heat is efficiently radiated to the adherend through a thin resin film. be able to.
Therefore, sufficient heat dissipation can be ensured. And the deterioration of the display panel 18 due to excessive heat generation can be prevented, and the reliability of the display device 100 can be improved.
Therefore, it is possible to provide the display device 100 that ensures reliability that can withstand actual use. In other words, it is possible to provide the display device 100 that ensures the durability required for actual use.
Further, since the display panel 18 has a display region V in which a plurality of pixels are formed, unlike a conventional display device in which a translucent panel needs to be replaced every time display contents are changed, The display content can be changed simply by changing the image signal supplied to the region V.
Therefore, it is possible to provide a display device 100 that is easy to use.

In addition, since the total thickness in the preferred example is as thin as about 290 μm, the display device 100 has sufficient flexibility.
Further, when a bending force is applied to the glass substrate of the display panel 18, cracks are generated from the peripheral portion thereof, but in addition to being reinforced (supported) by the magnet sheet 30 having substantially the same size, the peripheral portion is formed by the resin film. Is laminated, the bending resistance (limit) of the display panel 18 can be increased. In other words, since the display panel 18 is lined with the magnet sheet 30 and the peripheral edge is laminated with the resin film, the occurrence of cracks can be suppressed.
As described above, since the magnet sheet 30 has a sufficient magnetic force even if it is thin, the display device 100 can be easily attached to and detached from a desired adherend and has a sufficient attractive force. Can be provided.
Therefore, it is possible to provide a display device 100 that has both flexibility and practical strength (toughness), is easy to use, and has high reliability.

In addition, unlike the conventional reinforcing structure in which the connecting portion of the flexible substrate 20 is covered and molded with silicon resin (adhesive) or the like, the reinforcing structure is also used by laminating with the resin films 25a and 25b. , Production efficiency is good. Further, since the connection portion and the display panel 18 are bonded (filled) with the same resin, sufficient practical strength (toughness) can be ensured without impairing flexibility.
Furthermore, since the polyethylene-based adhesive layer used for the resin films 25a and 25b is excellent in insulation, water resistance, and heat resistance, sufficient electrical reliability can be ensured.

In addition, in the manufacturing method, the polyethylene-based adhesive layer has almost no initial tackiness at room temperature as seen in the acrylic adhesive layer, so that not only air bubbles are easily removed, but also in the state of a pre-stacked preparation. Positioning can be done easily. Therefore, since a multilayer structure can be formed by a single heat lamination in a reduced pressure atmosphere, manufacturing efficiency is good. Moreover, it is excellent in mass productivity.
In particular, since the same EVA as the resin film is used as the binder of the magnet sheet 30, the magnet sheet and the resin film are well fused, and both can be substantially integrated.
Furthermore, since the polyethylene-based adhesive layer has almost no initial adhesion at room temperature, there is little sticking of foreign matter, and even if foreign matter is attached, it can be easily removed. Further, even when there is a foreign matter, when softened by heating, if the foreign matter is small, it is embedded in the adhesive layer, so that defects due to foreign matter contamination can be suppressed as compared with a commonly used acrylic adhesive layer. Moreover, since polyethylene-type resin is general purpose resin, member cost can be held down.

(Embodiment 2)
FIG. 7 is a perspective view of the display device according to the second embodiment, and corresponds to FIG.
Hereinafter, the display device 110 according to Embodiment 2 of the present invention will be described. In addition, about the component same as Embodiment 1, the same number is attached | subjected and the overlapping description is abbreviate | omitted.
The display device 110 according to the present embodiment is configured by adding a yoke 35 to the display device 100 according to the first embodiment. Specifically, a yoke 35 as a plate member is sandwiched between the magnet sheet 30 and the display panel 18. Other than that, it is substantially the same as the description in the first embodiment.

As shown in FIG. 7, the display device 110 has a structure in which a laminated structure in which a yoke 35 and a display panel 18 are stacked on a magnet sheet 30 is laminated with two resin films 25a and 25b.
The yoke 35 is a yoke and is made of a thin plate having high magnetic permeability such as iron or nickel. In the present embodiment, as a suitable example, a steel foil having a thickness of about 15 μm is used as the yoke 35. Specifically, a member obtained by pasting the steel foil on one surface of a large-sized magnet sheet 30 and then cutting the steel foil into approximately the same size as the display panel 18 is used. In other words, the magnet sheet 30 and the yoke 35 are formed as a previously integrated member and used.
The material of the yoke 35 is not limited to iron or nickel, and any material having a high saturation magnetic flux density may be used. For example, an alloy such as PB permalloy (Ni—Fe) or PC permalloy (Ni—Mo, Cu—Fe) may be used. Further, a woven (woven fabric) state of these metals or alloy wires may be used as the yoke 35. Further, the thickness is not limited to the above-described thickness, and may be set as appropriate within a range of 10 to 200 μm according to the required specification for the application of the display device 110.

As described above, according to the present embodiment, in addition to the effects in the first embodiment, the following effects can be obtained.
According to the display device 110, since the yoke 35 is disposed between the magnet sheet 30 and the display panel 18, the magnetic flux on the display panel 18 side can be confined in the yoke 35. In other words, the yoke 35 forms a magnetic flux return path on the display panel 18 side.
If a leakage magnetic flux from the magnet sheet 30 to the display panel 18 is generated, depending on the strength of the magnetic flux, magnetic dust or dust may adhere to the display panel or the magnetic card. There was a problem of destroying the magnetic data.
According to the display device 110, the leakage magnetic flux toward the display panel 18 can be suppressed by the action of the yoke 35. Therefore, the harmful effects caused by the leakage magnetic flux such as adhesion of dust and the like and destruction of magnetic data of the magnetic card. Can be reduced.
Therefore, it is possible to provide an easy-to-use display device 110 that suppresses electromagnetic interference (EMI).

Moreover, when the yoke 35 is comprised from a metal or an alloy, the thermal conductivity of the yoke 35 is higher than the magnet sheet 30 and the resin films 25a and 25b.
Therefore, heat generated by the display panel 18 during image display can be efficiently absorbed. Further, since the display device 110 is used in a state of being attached to an adherend such as a metal plate during general use, the absorbed heat is efficiently covered through the magnet sheet 30 and the thin resin film. Heat can be dissipated to the body.
Therefore, sufficient heat dissipation can be ensured. And the deterioration of the display panel 18 due to excessive heat generation can be prevented, and the reliability of the display device 110 can be improved.
Therefore, it is possible to provide the display device 110 that ensures reliability that can withstand actual use.

Further, in the preferred example, a thin and flexible steel foil is used as the yoke 35, so that the thickness and flexibility substantially the same as those of the display device 100 can be secured.
Further, since a member obtained by pasting the steel foil on one surface of the large-sized magnet sheet 30 and then cutting the steel foil into approximately the same size as the display panel 18 is used as the yoke 35, the manufacturing method similar to that of the display device 100 is used. Can be manufactured. Further, the manufacturing cost can be suppressed.
Therefore, it is possible to provide the display device 110 having excellent manufacturing efficiency.

(Embodiment 3)
FIG. 8A is a plan view of the display device according to the third embodiment, FIG. 8B is a side sectional view of the main part in the section ii in FIG. 8A, and FIG. It is a sectional side view in a section.
Hereinafter, the display device 120 according to the third embodiment of the present invention will be described. In addition, about the component same as Embodiment 1, the same number is attached | subjected and the overlapping description is abbreviate | omitted.
The display device 120 of the present embodiment differs from the display device 100 of the first embodiment in the arrangement of magnet sheets. Specifically, the magnet sheet 31 is arranged not next to the display panel 18 but next to the display panel 18. Other than that, it is substantially the same as the description in the first embodiment.

As shown in FIG. 8A, in the display device 120, the magnet sheet 31 is disposed on the planar peripheral edge of the display panel 18. Specifically, the magnet sheet 31a is disposed above (upper adjacent) on the Y axis (+) side of the display panel 18, and the magnet sheet 31b is disposed on the right side (right adjacent) on the X axis (+) side. Has been. Similarly, a magnet sheet 31c is arranged below (on the lower side) on the Y axis (−) side, and magnet sheets 31d and 31e are arranged on the left side (on the left side) on the X axis (−) side. Yes. In other words, the magnet sheet 31a is disposed along the upper side of the display panel 18, the magnet sheet 31b is disposed along the right side, the magnet sheet 31c is disposed along the lower side, and the magnet sheets 31d and 31e are disposed along the left side. Is arranged.
Note that the magnet sheet 31 is a generic term for the magnet sheets 31 a to 31 e.

Each of the magnet sheets 31a to 31c has a rectangular shape in plan, and the length in the long side direction is formed to be substantially the same as the length of the corresponding side.
Each of the magnet sheets 31e and 31d has a rectangular shape in a plan view, and is disposed (avoided) across the flexible substrate 20 along the overhang region 1e. In other words, the magnet sheet 31d and the magnet sheet 31e are disposed on both sides of the flexible substrate 20 in the Y-axis direction.
As described above, since the magnet sheet 31 is disposed on the peripheral edge of the display panel 18, the planar size of the laminate structure 25 is slightly larger than that of the display device 100 of the first embodiment. .
In this embodiment, as a suitable example, the width (short side length) of the magnet sheet 31 is about 5 mm. Note that the width is not limited to the above dimensions, and the width may be appropriately set to about 2 mm or more according to the size, weight, usage, and the like of the display device 120.
In addition, the thickness of the magnet sheet 31b in the preferred example is about 100 μm. Note that the size is not limited to this, and it may be set to be approximately the same as or slightly thicker than the thickness of the display panel 18.

FIG. 8B shows a state in which the magnet sheet 31b disposed along the right side of the display panel 18 is laminated with the resin films 25a and 25b.
Here, since the thickness of the display panel 18 in the preferred example is about 90 μm and the thickness of the magnet sheet 31b is about 100 μm, the end on the X axis (+) side of the magnet sheet is melted. The resin films 25a and 25b are substantially filled. In other words, there is almost no gap at the end of the magnet sheet 31b on the X-axis (+) side. Further, as shown in FIG. 8C, there is almost no gap at the end of the magnet sheet 31e on the X-axis (−) side.
The same applies to the end portions of the other magnet sheets 31.

FIGS. 9A to 9C are plan views of display devices of different modes, and correspond to FIG. The arrangement mode of the magnet sheet 31 is not limited to the arrangement mode shown in FIG. 8A, and may be the arrangement mode shown in FIGS. 9A to 9C.
In FIG. 8A, the magnet sheet 31 is arranged corresponding to each of the four sides of the display panel 18, but the arrangement mode of the magnet sheet 31 depends on the size, weight, usage, etc. of the display device 120. May be changed.

For example, for outdoor applications that may be exposed to wind and rain, the magnetic sheet 31 is arranged on all four sides, and the display device 120 of FIG. Although suitable, for indoor use used in a certain stable environment such as an office, the arrangement of the magnet sheet 31 may be the arrangement mode shown in FIGS.
Specifically, in the display device 121 of FIG. 9A, the magnet sheet along the left side of the display panel 18 is omitted as compared with the display device 120.
Further, in the display device 122 of FIG. 9B, magnet sheets along the left and right sides of the display panel 18 are omitted. In other words, only the magnet sheets 31a and 31c along the upper and lower sides of the display panel 18 are provided.
Further, in the display device 123 of FIG. 9C, magnet sheets along the left and right sides and the lower side of the display panel 18 are omitted. In other words, only the magnet sheet 31a along the upper side of the display panel 18 is provided. Note that the width of the magnet sheet 31a is set wider (thicker) than that of the display device 120 in order to obtain a necessary attracting force. Similarly, in the display devices 121 and 122, the width of the magnet sheet may be increased.

As described above, according to the present embodiment, in addition to the effects in the first embodiment, the following effects can be obtained.
According to the display device 120, since the display panel 18 having a thickness of about 90 μm and the magnet sheet 31 having a thickness of about 100 μm are laminated in a state of being arranged in a plane, the total thickness in the magnet sheet 31 portion. Is about 200 μm, and can be made thinner than the display device 100 of the first embodiment.
In particular, since the magnet sheet 31 is thicker than the display panel 18, the thickest part after lamination is a part that overlaps the magnet sheet 31, in other words, a part that is in close contact with the adherend overlaps the magnet sheet 31. Since it becomes a part, the attractive force can be increased.
In addition, since the peripheral portion of the display device 120 has a configuration in which only the magnet sheet 31 is laminated, the end portion thereof is substantially filled with the molten resin films 25a and 25b, and there is almost no gap. Therefore, it has excellent barrier properties.
Therefore, it is possible to provide the display device 120 with high reliability while having flexibility.

In addition, since the belt-like magnet sheet 31 is arranged at the peripheral edge of the display panel 18, the area of the magnet sheet is smaller than that of the display device 100 of Embodiment 1 in which the magnet sheet is provided on the entire back surface of the display panel. Can be small. That is, since the weight is reduced accordingly, even with the configuration using the belt-shaped magnet sheet 31, a sufficient attractive force can be obtained.
Therefore, the display device 120 that is lightweight and easy to use can be provided.

Further, according to the display device 121 of FIG. 9A, the magnet sheet on the left side is omitted as compared with the display device 120, and accordingly, the width in the X-axis direction can be reduced accordingly.
Further, according to the display device 122 of FIG. 9B, the magnet sheet corresponding to the left and right sides is omitted as compared with the display device 120, and accordingly, the width in the X-axis direction can be reduced accordingly. it can.
In addition, according to the display device 123 of FIG. 9C, compared to the display device 120, the magnet sheet corresponding to the left and right sides and the magnet sheet on the lower side are omitted. And the height in the Y-axis direction can be narrowed.
Therefore, a narrow frame can be realized by appropriately selecting the display devices 121 to 123 according to the size, weight, usage, and the like of the display device 120. Further, since the number of magnet sheets used is reduced as compared with the display device 120, the cost can be suppressed.

(Equipment 1)
Fig.10 (a) is a perspective view which shows the electric refrigerator carrying the above-mentioned display apparatus.
The display device 100 described above can be mounted and used in an electric refrigerator 200 as a first device, for example. In addition, you may replace the display apparatus 100 with the display apparatus in each embodiment and a modification.

As shown in FIG. 10A, the display device 100 is attached to the door 201 arranged on the front surface of the electric refrigerator 200. The door 201 as an adherend is made of a steel plate, and a large curved surface is formed on the surface thereof.
A controller 150 for driving and controlling the display device 100 is disposed on the inner surface of the door 201. The controller 150 includes a rechargeable power supply unit such as a lithium ion battery, an image processing unit that generates image data to be supplied to the display device 100, a program that defines various processes and display modes, and a storage unit that stores data. The CPU includes a central processing unit (CPU) that controls each unit by executing the program, an interface unit that is connected to an external device and receives an image signal and the like. The controller 150 may be incorporated in the configuration of the electric refrigerator 200 in advance.
The flexible substrate 20 of the display device 100 is connected to a plurality of control signals including image signals from the controller 150 and wiring for supplying power.

The electric refrigerator 200 is connected to a home LAN (Local Area Network), and the controller 150 is also connected to the LAN.
For example, the display device 100 displays various information such as date and time display by a calendar program stored in the controller 150 and a message to a family sent from the home LAN.

As described above, according to the electric refrigerator 200, the following effects can be obtained.
A display device 100 is secured on the door 201 to ensure reliability that can withstand actual use. Therefore, the electric refrigerator 200 provided with the display device 100 with high reliability can be provided.
In particular, the door 201 has a large curved surface on its surface, and is frequently opened and closed as food is taken in and out in daily life, so that an impact according to the opening and closing occurs, resulting in a strong adsorption force. However, according to the display device 100 in which the magnet sheet 30 is disposed on the entire rear surface of the display panel 18, the display device 100 can be used stably without sliding down.

(Equipment 2)
FIG. 10B is a plan view showing a whiteboard 250 as a second device equipped with the above-described display device.
The display device 121 described above can be used by being mounted on, for example, a whiteboard 250 as a second device. In addition, you may replace the display apparatus 121 with the display apparatus in each embodiment and a modification.
In addition, about the component same as the electric refrigerator 200, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 10B, a display device 121 is attached to the left side of the white board 250. Moreover, the board surface as a to-be-adhered body is comprised from the steel plate.
A controller 160 is disposed on the back side of the white board 250 surface. In addition to the configuration of the controller 150, the controller 160 includes a wireless LAN terminal and an antenna 161 for the terminal as an interface unit. The terminal is not limited to a wireless LAN terminal, and any terminal capable of wireless communication may be used.
A plurality of control signals including image signals from the controller 160 and wiring for supplying power are connected to the flexible substrate 20 of the display device 121. The antenna 161 is disposed in the vicinity of the wiring portion and exposed from the side end portion of the whiteboard 250 board surface.

As described above, according to the whiteboard 250, in addition to the effects in the electric refrigerator 200, the following effects can be obtained.
Since the controller 160 is equipped with a wireless LAN terminal as an interface unit, the desired information can be displayed without the need for wiring processing or the like wherever the whiteboard 250 is installed in the communication area. can do.
Therefore, it is possible to provide the whiteboard 250 including the display device 121 that is easy to use and excellent in durability.

  Further, the device is not limited to the electric refrigerator 200 or the white board 250, and may be any device provided with an adherend. For example, it can be applied to metallic file cabinets, desks, columns, wall surfaces, lockers, and the like. Moreover, even if it is these structures, the same effect can be acquired.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below.

(Modification 1)
FIG. 11A is a plan view of a display device according to the first modification, and corresponds to FIG. FIG.11 (b) is a sectional side view in the kk cross section of (a), and respond | corresponds to FIG.8 (b).
A handle portion 55 may be added to the configuration of the display device in each of the above embodiments.
Hereinafter, the display device 124 according to this modification will be described. In addition, about the component same as the display apparatus 120 in Embodiment 3, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 11A, a handle portion 55 is formed on the right side of the display device 124. In other words, the handle portion 55 is formed on the opposite side of the flexible substrate 20 in the display device 124.
As illustrated in FIG. 11B, the handle portion 55 is a handle in which a central portion on the right side of the display device 124 protrudes from the side and the protruding portion is curved to the surface side. In other words, it is a handle formed by protruding a part of the laminate structure 25 from the right side. The curve can be brazed by heat treatment in a state of being sandwiched by a dedicated jig after lamination.
Moreover, the formation position of the handle part 55 is not limited to the center on the right side, and may be anywhere as long as it is the peripheral part of the laminate structure 25.
Moreover, the size of the handle part 55 should just be a magnitude | size which can be picked with a finger, and should just be suitably set according to the size of the display apparatus 120, weight, a use, etc.

As described above, according to the display device 124, the following effects can be obtained.
Since the display device 124 includes the handle portion 55, it can be easily attached to and detached from the adherend.
Accordingly, it is possible to provide a display device 124 that is easy to use.

(Modification 2)
FIG. 12 is a cross-sectional view of a display panel according to Modification Example 2, and corresponds to FIG.
In each said embodiment, although the display panel 18 demonstrated as what is an organic electroluminescent panel, it is not limited to this. Any thin display panel in which an electro-optic layer is sandwiched between a pair of substrates may be used. For example, an electrophoretic panel including an electrophoretic layer may be used as the electro-optical layer.
Hereinafter, a display panel 98 according to Modification 2 will be described. In addition, about the component same as FIG. 3, the same number is attached | subjected and the overlapping description is abbreviate | omitted.
The display panel 98 of the present embodiment is a reflective electrophoretic panel including an electrophoretic layer 97 as an electro-optical layer.

The display panel 98 has a configuration in which an electrophoretic layer 97 is sandwiched between the element substrate 1 and the counter substrate 95. Further, the laminated structure from the element substrate 1 to the pixel electrode 6 is the same as the configuration of FIG.
The counter substrate 95 is a transparent substrate made of, for example, glass or plastic. On the element substrate 1 side of the counter substrate 95, a counter electrode 94 is formed on the entire surface (solid shape) so as to face the plurality of pixel electrodes 6. The counter electrode 94 is made of a transparent conductive material such as ITO.
The electrophoretic layer 97 includes a plurality of microcapsules 90, a binder 92 that holds the microcapsules, an adhesive layer 91, and the like. The display panel 98 includes an electrophoretic sheet in which the electrophoretic layer 97 is fixed to the counter substrate 95 in advance by the binder 92, and the element substrate 1 on which the pixel electrode 6 and the like are formed separately from the sheet. Is formed by bonding with an adhesive layer 91.

One or a plurality of microcapsules 90 are sandwiched between the pixel electrode 6 and the counter electrode 94 and are arranged in one pixel (in other words, with respect to one pixel electrode 6).
As shown in the enlarged view in the upper right of FIG. 12, the microcapsule 90 has a configuration in which a dispersion medium 78, a plurality of white particles 76, and a plurality of black particles 77 are enclosed inside a coating 75. The microcapsule 90 is formed in a spherical shape having a particle size of about 50 μm, for example.
The coating 75 is made of a polymer resin having translucency such as acrylic resin, urea resin, gum arabic, and gelatin.
The dispersion medium 78 is a medium for dispersing the white particles 76 and the black particles 77 in the microcapsules 90 (in other words, in the coating film 75).

The white particles 76 are particles (polymer or colloid) made of a white pigment such as titanium dioxide, zinc white (zinc oxide), and antimony trioxide, and are negatively charged, for example.
The black particles 77 are particles (polymer or colloid) made of a black pigment such as aniline black or carbon black, and are positively charged, for example.
As a result, the white particles 76 and the black particles 77 move in the dispersion medium 78 due to the electric field (potential difference) generated by the potential difference between the pixel electrode 6 and the counter electrode 94, so that the particles gathered on the counter electrode 94 side. The color tone will be displayed.
It should be noted that color display such as red, green, and blue can be performed by replacing the pigment used for the white particles 76 and the black particles 77 with pigments such as red, green, and blue.
In addition, the present invention is not limited to the above-described microcapsule method, and an electropowder fluid type electrophoretic panel that controls display switching / on / off by switching between plus and minus by putting a charged electropowder fluid in a pixel. It may be. Alternatively, an electrophoretic panel using cholesteric liquid crystal may be used.
Even if it is these structures, the effect similar to said each embodiment can be acquired.
In addition, since an electrophoresis panel including an electrophoresis layer has a holding characteristic that enables image display even when the power is turned off, a display device including the panel can be used alone after writing still image data. . In addition, if a dedicated controller that can be attached and detached and a battery unit are prepared as options, the ease of use can be improved.

(Modification 3)
This will be described with reference to FIG.
In each of the above embodiments, the display panel 18 has been described as having a configuration in which a color filter that emits white light in common to all pixels and selectively transmits each color light of RGB from white light is provided on the display surface side. However, the present invention is not limited to this. Any color pixel may be used as long as it can emit RGB color light.
For example, a display panel having a configuration using a so-called three-color coating method in which a light emitting layer of each color of RGB is formed for each color pixel of RGB in the organic EL layer 8 may be used.
Further, in each of the above embodiments, the display device 100 has been described as an active matrix type, but may be a passive (simple) matrix type.
In this case, the element layer 2 becomes unnecessary, and the organic EL layer 8 is sandwiched between the scan electrode and the data electrode. For example, the scan electrode is formed on the element substrate 1 side, and the data electrode is formed on the CF substrate 16 side. The scan electrodes and the data electrodes are formed so as to extend in the intersecting directions so as to have a lattice shape in plan view.
Even if it is these structures, the effect similar to said each embodiment can be acquired.

  DESCRIPTION OF SYMBOLS 1 ... Element substrate as a glass substrate, 8 ... Organic EL layer as an electro-optic layer, 16 ... CF substrate as a glass substrate, 18 ... Display panel, 20 ... Flexible substrate, 25 ... Laminate structure, 25a, 25b ... Resin Film, 30, 31, 31a, 31b, 31c, 31d, 31e ... magnet sheet, 35 ... yoke as plate member, 55 ... handle part, 100, 110, 120, 121, 122, 123, 124 ... electro-optical device Display device 150, 160 ... controller as device, 200 ... electric refrigerator as device, 250 ... white board as device, V ... display area.

Claims (11)

A magnet sheet,
A display panel having a display region in which a plurality of pixels are formed by sandwiching an electro-optic layer between a pair of glass substrates;
A resin film for covering and laminating a laminated structure in which the display panel is overlaid on the magnet sheet from the first surface side on the display region side and the second surface side facing the first surface; An electro-optical device comprising: A plate member having magnetism that is substantially the same size as the magnet sheet in plan view,
The electro-optical device according to claim 1, wherein the laminated structure is configured such that the plate member is sandwiched between the magnet sheet and the display panel. In the display panel, an extended region in which one side of the glass substrate out of the pair of glass substrates protrudes from the other glass substrate is formed,
One end of a flexible substrate is connected to the overhang region,
3. The electricity according to claim 1, wherein one end of the flexible substrate is covered with the resin film, and the other end of the flexible substrate protrudes from the outer shape of the resin film on the one side. Optical device. A magnet sheet,
A display panel having a display region in which a plurality of pixels are formed by sandwiching an electro-optic layer between a pair of glass substrates;
The structure in which the magnet sheet is arranged next to at least one side of the display panel is covered and laminated from the first surface side on the display region side and the second surface side facing the first surface. An electro-optical device comprising: a resin film. In the display panel, an extended region in which one side of the glass substrate out of the pair of glass substrates protrudes from the other glass substrate is formed,
5. The electro-optical device according to claim 4, wherein the magnet sheet is disposed next to at least one of the three sides of the display panel excluding the overhang region. One end of a flexible substrate is connected to the overhang region,
6. The electro-optical device according to claim 5, wherein one end of the flexible substrate is covered with the resin film, and the other end of the flexible substrate protrudes from the outer shape of the resin film on the one side. . The magnet sheet is made of a sheet-like binder resin containing magnetic powder,
The resin film is composed of a polyethylene copolymer material,
7. The electro-optical device according to claim 1, wherein each of the pair of glass substrates of the display panel has a thickness set to 100 μm or less.   The electro-optical device according to claim 7, wherein the binder resin is a polyethylene copolymer material.   The electro-optical device according to claim 1, wherein the electro-optical layer is an organic EL layer including an organic light emitting layer.   The electro-optical device according to claim 1, wherein the laminated resin film is formed with a handle portion extending in a planar manner from a peripheral edge portion thereof. The electro-optical device according to any one of claims 1 to 10,
An apparatus comprising: a controller for supplying at least an image signal and power to the electro-optical device.

Images