JP5917335B2 - Method for manufacturing display device - Google Patents

Description

The present invention relates to a display device using an organic electroluminescence (hereinafter also referred to as EL) phenomenon and a method for manufacturing the display device.

Research and development of light-emitting elements (organic EL elements) using the organic EL phenomenon have been actively conducted. The basic structure of an organic EL element is a layer (EL layer) containing a light-emitting organic compound between a pair of electrodes, which can be reduced in thickness and weight, can respond to input signals at high speed, and has a low DC voltage. It has been attracting attention as a next-generation flat panel display element because of its characteristics such as being capable of being driven. In addition, a display using an organic EL element is characterized by excellent contrast and image quality and a wide viewing angle.

In the case of manufacturing a device that displays a full-color image, it is necessary to arrange at least light emitting elements that emit light of three colors of red, green, and blue in a matrix. As the method, a method of providing light emitting elements having different emission colors by separately coating the necessary portions of the EL layer for each color (hereinafter referred to as a coating method), all the light emitting elements emit white light, and each has a color filter. A method of obtaining each color by transmitting white light by overlapping (hereinafter referred to as a color filter method), and all light emitting elements emit light having a wavelength shorter than blue or blue, and a color conversion layer is superimposed on each. There is a method of obtaining each color by transmitting blue light (hereinafter referred to as a color conversion method). For example, Patent Document 1 describes an organic EL display device using a color filter method.

JP 2012-38677 A

Patent Document 1 discloses a method for manufacturing a color filter using a photolithography process. In manufacturing a color filter using a photolithography process, the same number of photomasks as the number of colors included in the color filter are required. Since the photomask is expensive, there is a problem that the manufacturing cost of the organic EL display device is increased.

Therefore, an object of one embodiment of the present invention is to provide an inexpensive and simple method for manufacturing a display device using an organic EL element.

A display device of one embodiment of the present invention includes an organic EL element, a sealing film that covers the organic EL element, and a colored layer over the sealing film. The colored layer is formed using a colored material layer that transmits light in a specific wavelength range. In the method for manufacturing a display device of one embodiment of the present invention, the coloring material layer is cured using light of the organic EL element.

For example, an organic EL element and a sealing film that covers the organic EL element are provided, and a coloring material including a pigment or a dye, a binder, and a visible light curable photopolymerization initiator is provided on the sealing film. Provide a layer. And an organic EL element is made to light-emit, and a colored material layer is irradiated with visible light. By irradiation with visible light, a part of the coloring material layer (including a region overlapping with the light emitting region of the organic EL element) is cured. Then, by developing, an uncured region of the coloring material layer is removed, and a colored layer (corresponding to a cured region of the coloring material layer) is formed in a region overlapping with the light emitting region of the organic EL element.

In the method for manufacturing a display device of one embodiment of the present invention, a colored layer can be formed in a desired region without using a photomask. Therefore, a display device using an organic EL element can be provided inexpensively and easily.

Specifically, in one embodiment of the present invention, a light-emitting element is manufactured by forming a first electrode, a layer containing a light-emitting organic compound, and a second electrode that transmits visible light in this order. A first step; a second step of forming a sealing film in contact with the second electrode and covering the light emitting element; and a first step of forming a coloring material layer that is cured by light emitted from the light emitting element on the sealing film. And a fourth step of curing the region of the coloring material layer that overlaps the light emitting region of the light emitting device by emitting light, and a fifth step of removing the uncured region of the coloring material layer by development. A display device having a step.

In addition, by using the method for manufacturing a display device of one embodiment of the present invention, a plurality of organic EL elements, a sealing film that covers the plurality of organic EL elements, and a plurality of colored layers over the sealing film, A display device provided can be manufactured. The plurality of colored layers are formed using a plurality of colored material layers that transmit light in different wavelength ranges. A colored layer can be provided in a desired region by emitting light from an organic EL element that overlaps a region to be cured (region where a colored layer is to be provided) in the coloring material layer.

For example, a sealing film that covers the first organic EL element and the second organic EL element is provided, and a pigment or dye, a binder, and a visible light curable photopolymerization initiator are formed on the sealing film. A first coloring material layer is provided. Then, the first coloring material layer is irradiated with visible light by causing the first organic EL element to emit light. By irradiation with visible light, a part of the first coloring material layer (including a region overlapping with the light emitting region of the first organic EL element) is cured. After that, by developing, an uncured region of the first coloring material layer is removed, and the first coloring layer (of the first coloring material layer is overlapped with the light emitting region of the first organic EL element). Corresponding to the hardened region).

Next, a second colored material layer containing a pigment or dye, a binder, and a visible light curable photopolymerization initiator is provided on the sealing film and the first colored layer. Here, the first coloring material layer and the second coloring material layer include different pigments (or dyes), and the included binder and the visible light curable photopolymerization initiator are the same or different. Also good. Then, the second coloring material layer is irradiated with visible light by causing the second organic EL element to emit light. A part of the second coloring material layer (including a region overlapping with the light emitting region of the second organic EL element) is cured. Thereafter, by developing, an uncured region of the second coloring material layer is removed, and the second coloring layer (of the second coloring material layer is overlapped with the light emitting region of the second organic EL element). Corresponding to the hardened region).

In the method for manufacturing a display device of one embodiment of the present invention, a plurality of colored layers can be formed over an organic EL element without using a photomask. Therefore, a display device using an organic EL element can be provided inexpensively and easily.

Specifically, according to one embodiment of the present invention, a first light-emitting element is formed by forming a first electrode, a layer containing a light-emitting organic compound, and a second electrode that transmits visible light in this order. And a first step of manufacturing a second light emitting element, a second step of forming a sealing film in contact with the second electrode and covering the first light emitting element and the second light emitting element, and a sealing film A first step of forming a first coloring material layer that is cured by light emitted from the first light emitting element, and emitting the first light emitting element to emit light of the first coloring material layer. A fourth step of curing a region overlapping the light emitting region of the light emitting element; a fifth step of removing an uncured region of the first coloring material layer by development; and a first coloring material on the sealing film. Second coloring that transmits light in a wavelength region different from that of the layer and is cured by light emitted from the second light emitting element A sixth step of forming the material layer, a seventh step of curing the region overlapping the light emitting region of the second light emitting element of the second coloring material layer by causing the second light emitting element to emit light, and developing Thus, an eighth step of removing the uncured region of the second coloring material layer is a method for manufacturing a display device.

Note that in this specification, the colored layer refers to a layer that functions as a color filter or a color conversion layer.

In this specification, a display device is connected to a connector such as an FPC (Flexible Printed Circuit), a TAB (Tape Automated Bonding) tape, or a TCP (Tape Carrier Package), or a printed wiring on the end of a TAB tape or TCP. It is assumed that the display device also includes a module provided with a plate or a module in which an IC (integrated circuit) is directly mounted on a light emitting element by a COG (Chip On Glass) method.

In one embodiment of the present invention, a coloring layer that functions as a color filter or a color conversion layer is formed by curing a coloring material layer using light of an organic EL element. Since a colored layer can be formed on an organic EL element without using a photomask, a display device using the organic EL element can be provided inexpensively and easily.

4A and 4B illustrate an example of a display device and a manufacturing method thereof. FIG. 11 illustrates an example of a display device. 4A and 4B illustrate an example of a method for manufacturing a display device. FIG. 11 illustrates an example of a display device. 4A and 4B illustrate an example of a method for manufacturing a display device. 4A and 4B illustrate an example of a method for manufacturing a display device. FIG. 6 illustrates an example of a light-emitting element. FIG. 14 illustrates an example of an electronic device.

Embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description, and it is easily understood by those skilled in the art that modes and details can be variously changed without departing from the spirit and scope of the present invention. Therefore, the present invention should not be construed as being limited to the description of the embodiments below. Note that in structures of the invention described below, the same portions or portions having similar functions are denoted by the same reference numerals in different drawings, and description thereof is not repeated.

(Embodiment 1)
In this embodiment, a method for manufacturing a display device according to one embodiment of the present invention will be described with reference to FIGS.

The display device of the present embodiment includes an organic EL element, a sealing film that covers the organic EL element, and a colored layer on the sealing film. The colored layer is formed using a colored material layer that transmits light in a specific wavelength range. In the method for manufacturing a display device of one embodiment of the present invention, the coloring material layer is cured using light of the organic EL element. A colored layer can be provided in a desired region by emitting light from an organic EL element that overlaps a region to be cured (region where a colored layer is to be provided) in the coloring material layer.

In the method for manufacturing a display device of one embodiment of the present invention, a colored layer can be formed over an organic EL element without using a photomask. Therefore, a display device using an organic EL element can be provided inexpensively and easily.

In this embodiment, a display device including a colored layer functioning as a color filter is described as an example. The present invention is not limited to this. For example, a display device including a colored layer that functions as a color conversion layer may be manufactured.

An example of a cross-sectional view of a pixel included in the display device of one embodiment of the present invention is illustrated in FIG. In FIG. 1A, a light-emitting element 103 is provided over a substrate 101. The light-emitting element 103 is a light-emitting element having a top emission (top emission) structure, and includes a first electrode 131, a layer containing a light-emitting organic compound (EL layer) 133, and a second electrode 135 that transmits visible light. It is configured. A structure example, a material, a manufacturing method, and the like of the light-emitting element 103 will be described in detail in Embodiment 2. The light emitting element 103 is covered with a sealing film 107. A color filter 109 is provided over the sealing film 107 in a region overlapping with the light emitting element 103.

The color of light exhibited by a pixel is determined by a color filter included in the pixel. The color element of the color filter is not particularly limited, and red, green, blue, yellow, cyan, magenta, and the like can be used.

The color filter included in the display device of this embodiment is formed using a visible light curable photopolymerization initiator, a pigment or dye, and a binder. As the visible light curable photopolymerization initiator, titanocene compounds, α-diketone compounds, triazine compounds, acylphosphine oxide compounds, bisacylphosphine oxide compounds, camphorquinone derivatives, and the like can be used.

The pigment and dye used for the color filter differ depending on the color of the color filter. For example, a red pigment or dye is used for the red color filter. Examples of red pigments include diketopyrrolopyrrole pigments and anthraquinone pigments. A green pigment or dye is used for the green color filter. Examples of the green pigment include halogenated phthalocyanine pigments. For toning, yellow pigments such as isondoline pigments, dichlorobenzidine disazo pigments, azomethine copper complex pigments, monoazo nickel complex pigments may be included. A blue pigment or dye is used for the blue color filter. Examples of blue pigments include phthalocyanine pigments.

Examples of the dye that can be used in the color filter include azo dyes, benzoquinone dyes, naphthoquinone dyes, anthraquinone dyes, cyanine dyes, squarylium dyes, croconium dyes, merocyanine dyes, and stilbene dyes. , Diarylmethane dyes, triarylmethane dyes, fluorane dyes, spiropyran dyes, phthalocyanine dyes, indigo dyes, fulgide dyes, nickel complex dyes, and azulene dyes. These dyes may be used alone or in combination of two or more in order to develop a desired spectral spectrum.

As the binder, polyimide resin, acrylic resin, ethyl cellulose resin, maleic acid resin, or the like can be used. The color filter may be formed by further using a coupling agent for improving the dispersibility of the pigment or dye in the binder.

Note that the structure of the light-emitting element 103 is not limited to the above. For example, a microresonator is formed by stacking a first electrode 131 that reflects visible light and a second electrode 135 that transmits and reflects visible light, and an EL layer 133 is provided therebetween, whereby the second electrode Light of a specific wavelength can be efficiently extracted from the 135 side. The wavelength of the light to be extracted depends on the distance between the first electrode 131 and the second electrode 135, and the distance forms an optical adjustment layer between the first electrode 131 and the second electrode 135. It can be adjusted with.

As the optical adjustment layer, a conductive film having a light-transmitting property with respect to visible light or a layer constituting an EL layer can be used. For example, for a blue pixel, an optical adjustment layer may be formed between the first electrode 131 and the second electrode 135 so as to intensify light having a wavelength of 400 nm or more and less than 500 nm. Similarly, the first pixel 131 and the first electrode 131 are arranged so that the green pixel intensifies light having a wavelength of 500 nm or more and less than 600 nm, and the red pixel is intensified by light having a wavelength of 600 nm or more and less than 800 nm. An optical adjustment layer may be formed between the two electrodes 135. By applying such a structure, light emitted from the light-emitting element 103 interferes between the first electrode 131 and the second electrode 135, and specific light among light having a wavelength of 400 nm to less than 800 nm is generated. Strengthen up, and color filters absorb unnecessary light.

A method for manufacturing a display device according to one embodiment of the present invention will be described with reference to FIG. First, the first electrode 131 is formed over the substrate 101. Next, the insulating layer 105 is formed over the first electrode 131, and the EL layer 133 and the second electrode 135 are formed. Then, a sealing film 107 that covers the light emitting element 103 is formed. Then, a coloring material layer 199 including a pigment or dye, a binder, and a visible light curable photopolymerization initiator is provided over the sealing film 107.

As the substrate 101, a material such as glass, quartz, or an organic resin can be used.

When an organic resin is used as the substrate 101, examples of the organic resin include polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, and polycarbonate (PC). Resin, polyether sulfone (PES) resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyvinyl chloride resin, or the like can be used. A substrate in which glass fiber is impregnated with an organic resin or a substrate in which an inorganic filler is mixed with an organic resin can also be used.

The insulating layer 105 is formed using an organic insulating material or an inorganic insulating material. In particular, it is preferable to use a photosensitive resin material so that the side wall of the opening has an inclined surface formed with a continuous curvature.

The sealing film 107 can be formed using a highly moisture-proof inorganic insulating material such as silicon oxide, silicon nitride, or aluminum oxide, or a highly moisture-proof organic resin material such as an epoxy resin. Alternatively, an organic resin material containing a desiccant may be used. The sealing film 107 may have a single layer structure or a laminated structure.

The coloring material layer 199 can be formed by a spin coating method, a slit coating method, a spray coating method, a casting method, or the like. The coloring material layer 199 includes a visible light curable photopolymerization initiator, a pigment or dye, and a binder. As the visible light curable photopolymerization initiator, pigment, dye, and binder, the aforementioned materials can be used.

In the method for manufacturing a display device of one embodiment of the present invention, a desired region of the coloring material layer 199 is cured by light emission of the light-emitting element 103. Therefore, indoor lighting and the like are adjusted as appropriate so that the coloring material layer 199 is not cured by indoor light. For example, the steps after the formation of the coloring material layer 199 may be performed in a yellow room.

Then, the coloring material layer 199 is irradiated with visible light by causing the light emitting element 103 to emit light. By irradiation with visible light, a part of the coloring material layer 199 (including a region overlapping with the light emitting region of the light emitting element 103) is cured. Thereafter, development is performed to remove an uncured region of the coloring material layer, and a color filter 109 (corresponding to a cured region of the coloring material layer 199) is formed in a region overlapping with the light emitting region of the light emitting element 103 ( (See FIG. 1A).

In addition, by using the method for manufacturing a display device of one embodiment of the present invention, a plurality of organic EL elements, a sealing film that covers the plurality of organic EL elements, and a plurality of colored layers over the sealing film, A display device provided can be manufactured. The plurality of colored layers are formed using a plurality of colored material layers that transmit light in different wavelength ranges.

The method for manufacturing a display device according to one embodiment of the present invention can be applied to manufacture of either a passive matrix display device or an active matrix display device.

<< Configuration Example 1 of Display Device >>
FIG. 2 shows an example of a passive matrix display device. A passive matrix display device includes a plurality of anodes arranged in stripes (bands) and a plurality of cathodes arranged in stripes (bands) so as to be orthogonal to each other. The EL layer is sandwiched between the two. Therefore, the pixel corresponding to the intersection of the selected anode (to which a voltage is applied) and the selected cathode is turned on.

FIG. 2A is a plan view of the display portion before the EL layer is formed. The first electrode 131 is provided over the substrate, and the opening corresponding to the light-emitting region of the pixel is formed over the first electrode 131. An insulating layer 105 having a portion is provided, and a plurality of reverse-tapered partition walls 106 that are parallel to each other and intersect the first electrode 131 are provided over the insulating layer 105.

2B is a cross-sectional view taken along the dashed-dotted line AB in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the dashed-dotted line CD in FIG. 2B and 2C, the EL layer 133 and the second electrode 135 are formed over the first electrode 131, whereby the light-emitting element 103 is provided, and the sealing film 107 that seals the light-emitting element 103 is formed. In addition, the structure after the color filter is formed on the sealing film 107 is shown.

2B and 2C illustrate an example in which a base insulating film 121 is provided over the substrate 101 and a plurality of stripe-shaped first electrodes 131 are arranged on the base insulating film 121 at equal intervals.

As shown in FIG. 2C, the insulating layer 105 and the partition 106 are made thicker than the EL layer 133 and the second electrode 135 so that the EL layer 133 separated into a plurality of regions and A second electrode 135 is formed. The second electrode 135 is a striped electrode parallel to each other and extending in a direction intersecting the first electrode 131. The areas separated into a plurality are electrically independent from each other. Note that a layer made of a material that forms the EL layer 133 and the second electrode 135 is also formed over the partition wall 106, and these layers are separated from the EL layer 133 and the second electrode 135. Yes.

On the sealing film 107 covering the light-emitting element 103 (the first electrode 131, the EL layer 133, and the second electrode 135), a color filter is provided in a region overlapping with the light-emitting region of the light-emitting element 103.

In this embodiment mode, the light-emitting element 103 included in each color pixel emits white light. In the present embodiment, the components other than the color filter are the same in each color pixel. The display device illustrated in FIG. 2C includes a red pixel 180R that exhibits red light, a green pixel 180G that exhibits green light, and a blue pixel 180B that exhibits blue light. Thus, the display device illustrated in FIG. 2C can realize full-color display.

In the red pixel 180 </ b> R, a red color filter 109 </ b> R is provided in a region overlapping with the light emitting element 103. In the green pixel 180G, a green color filter 109G is provided in a region overlapping with the light emitting element 103. In the blue pixel 180 </ b> B, a blue color filter 109 </ b> B is provided in a region overlapping with the light emitting element 103. For example, the red color filter 109R transmits red light and absorbs visible light of other colors.

FIG. 2D is a plan view in the case where an FPC (Flexible Printed Circuit) or the like is mounted on a passive matrix display device. In the display portion in FIG. 2D, the plurality of first electrodes 131 and the plurality of second electrodes 135 intersect so as to be orthogonal to each other. Note that in FIG. 2D, illustration of some components (such as the EL layer 133, the sealing film 107, and a color filter) is omitted. The display device in this specification includes not only the display device body but also a display device body in which an FPC or PWB is attached.

The plurality of first electrodes 131 are connected to the FPC 1109a through an anisotropic conductive film (not shown). The plurality of second electrodes 135 are electrically connected to the connection wiring 1108 at the wiring ends, and the connection wiring 1108 is connected to the FPC 1109b through an anisotropic conductive film (not shown).

Although FIG. 2D illustrates an example in which the driver circuit is not provided over the substrate 101, an IC chip including the driver circuit may be mounted over the substrate 101.

In the display device manufactured by applying one embodiment of the present invention, the display portion over the substrate 101 may be sealed with a counter substrate, for example, arranged in a frame shape so as to surround the display portion The substrate 101 and the counter substrate may be bonded to each other by the sealing material that has been used. As the sealing material, an organic resin such as a photocurable resin or a thermosetting resin, glass frit, or the like can be used. As the counter substrate, a material that can be used for the substrate 101 can be used. For example, glass or an organic resin can be preferably used. Sealing with the use of the counter substrate is preferable because impurities such as moisture can be prevented from entering the light-emitting element and a highly reliable display device can be realized.

<< Example 1 of Manufacturing Method of Display Device >>
A method for manufacturing a display device of one embodiment of the present invention is described with reference to FIGS.

[Production of light-emitting element]
First, the base insulating film 121 is formed over the substrate 101, and the connection wiring 1108 and the first electrode 131 are formed over the base insulating film 121. Next, the insulating layer 105 and the partition wall 106 are formed over the first electrode 131, and the EL layer 133 and the second electrode 135 are formed. Then, a sealing film 107 that covers the light emitting element 103 is formed.

In order to prevent impurities contained in the substrate 101 from diffusing into elements provided over the substrate 101, it is preferable to provide a base insulating film 121 on the surface of the substrate 101 using an insulating material. The base insulating film 121 is not necessarily provided if not necessary.

The connection wiring 1108 is preferably formed in the same process as the first electrode 131 because the manufacturing process of the display device can be simplified. In this embodiment mode, the sealing film 107 has a three-layer structure of an inorganic insulating film in contact with the light-emitting element 103, an organic resin film containing a desiccant, and an inorganic insulating film.

The partition wall 106 can be formed using an inorganic insulating material or an organic insulating material. For example, as the organic insulating material, a negative or positive photosensitive resin material, a non-photosensitive resin material, or the like can be used.

[Production of red pixels]
Next, a red coloring material layer 199R is formed over the sealing film 107 (FIG. 3A).

Next, the red coloring material layer 199 </ b> R covering the first electrode 131 and the connection wiring 1108 is removed. Then, by inputting a signal to the first electrode 131 and the connection wiring 1108, only some of the light-emitting elements 103 are selectively made to emit light. In the red coloring material layer 199R, a region irradiated with light from the light-emitting element 103 is cured.

Since the display device in this embodiment mode is a passive matrix method, arbitrary light emission corresponding to the intersection of the first electrode 131 and the second electrode 135 is generated by a signal input to the first electrode 131 and the connection wiring 1108. The element can emit light. Further, by controlling the signal, a plurality of light emitting elements can emit light simultaneously. Here, only the light emitting element 103 for which the red color filter 109R is to be provided on the light emitting region is selectively caused to emit light. The light-emitting element 103 that emits light at this time becomes a light-emitting element constituting the red pixel 180R. That is, the red coloring material layer 199 </ b> R in a region overlapping with the light emitting region of the light emitting element 103 constituting the red pixel 180 </ b> R is cured by being irradiated with visible light from the light emitting element 103.

Depending on the method for forming the coloring material layer, the first electrode 131 and the connection wiring 1108 may be covered with the coloring material layer, and a signal may not be input to the first electrode 131 and the connection wiring 1108. In such a case, the coloring material layer over the first electrode 131 and the connection wiring 1108 is removed to such an extent that a signal can be input to the first electrode 131 and the connection wiring 1108. For example, the coloring material layer over the first electrode 131 and the connection wiring 1108 may be removed using an organic solvent such as acetone.

A method for inputting a signal to the first electrode 131 and the connection wiring 1108 is not particularly limited. For example, the first electrode 131 and the connection wiring 1108 are contacted with a probe (needle, probe). A signal can be input to the first electrode 131 and the connection wiring 1108 by electrically connecting an external input terminal such as an FPC to the connection wiring 1108. In this embodiment mode, a probe is applied to the first electrode 131 and the connection wiring 1108 to input a signal.

Next, development is performed to remove the uncured region of the red coloring material layer 199R. As a result, as shown in FIG. 3B, a red pixel 180R in which a red color filter 109R is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

[Production of green pixels]
Similarly, a green coloring material layer 199G is formed over the sealing film 107 and the red color filter 109R, and the green coloring material layer 199G over the first electrode 131 and the connection wiring 1108 is removed. Then, by inputting a signal to the first electrode 131 and the connection wiring 1108, only some of the light-emitting elements 103 are selectively caused to emit light (FIG. 3C). In the green coloring material layer 199G, a region irradiated with light from the light emitting element 103 is cured.

Here, only the light emitting element 103 for which the green color filter 109G is to be provided on the light emitting region is selectively caused to emit light. The light-emitting element 103 that emits light at this time becomes a light-emitting element constituting the green pixel 180G. That is, the green coloring material layer 199 </ b> G in a region overlapping the light emitting region of the light emitting element 103 constituting the green pixel 180 </ b> G is cured by being irradiated with visible light from the light emitting element 103.

Next, development is performed to remove an uncured region of the green coloring material layer 199G. Accordingly, as illustrated in FIG. 3D, a green pixel 180G in which a green color filter 109G is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

[Production of blue pixels]
Further, a blue coloring material layer 199B is formed over the sealing film 107, the red color filter 109R, and the green color filter 109G, and the blue coloring material layer 199B over the first electrode 131 and the connection wiring 1108 is formed. Remove. Then, by inputting a signal to the first electrode 131 and the connection wiring 1108, only some of the light-emitting elements 103 are selectively caused to emit light (FIG. 3D). In the blue coloring material layer 199 </ b> B, the region irradiated with light from the light-emitting element 103 is cured.

Here, only the light emitting element 103 for which the blue color filter 109B is to be provided on the light emitting region is selectively caused to emit light. The light emitting element 103 that emits light at this time becomes a light emitting element constituting the blue pixel 180B. That is, the blue coloring material layer 199 </ b> B in a region overlapping with the light emitting region of the light emitting element 103 constituting the blue pixel 180 </ b> B is cured by being irradiated with visible light from the light emitting element 103.

Next, development is performed to remove the uncured region of the blue coloring material layer 199B. Thus, as shown in FIG. 2C, a blue pixel 180B in which a blue color filter 109B is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

Then, an FPC 1109a electrically connected to the first electrode 131 and an FPC 1109b electrically connected to the connection wiring 1108 are provided. Note that this step can be omitted when the FPC is provided in the previous step. Note that a sealing film covering the color filter, a black matrix, or the like may be further formed.

Through the above steps, the display device illustrated in FIG. 2D can be manufactured.

<< Display device configuration example 2 >>
FIG. 4A shows a plan view of the display device. FIG. 4B is a cross-sectional view taken along alternate long and short dash line E-F in FIG.

A display device illustrated in FIG. 4A includes a display portion 4502, a driver circuit portion 4503, and a driver circuit portion 4504 over a substrate 101.

On the substrate 101, a lead wiring for connecting an external input terminal for transmitting a signal (video signal, clock signal, start signal, reset signal, or the like) or potential from the outside to the driver circuit portion 4503 and the driver circuit portion 4504. Is provided. Here, an example in which an FPC 4505 is provided as an external input terminal is shown. Note that a printed wiring board (PWB) may be attached to the FPC 4505.

The driver circuit portion 4503 and the driver circuit portion 4504 each include a plurality of transistors. The circuit of the driver circuit portion can be formed by various CMOS circuits, PMOS circuits, or NMOS circuits. In this embodiment mode, a driver integrated type in which a drive circuit is formed on a substrate on which a display portion is formed is shown, but the present invention is not limited to this configuration, and the substrate on which the display portion is formed. A driving circuit can be formed on a different substrate.

The display portion 4502 includes a switching transistor, a current control transistor 123, and a plurality of first electrodes 131 electrically connected to the wiring (source electrode or drain electrode) of the current control transistor 123. This pixel is formed. In addition, an insulating layer 105 is formed to cover the end portion of the first electrode 131.

FIG. 4B illustrates an example in which a transistor is formed over the base insulating film 121; however, the base insulating film 121 is not necessarily provided if not necessary.

FIG. 4B illustrates an example in which the transistor is covered with the insulating film 125 and the insulating film 127.

FIG. 4B illustrates an example in which the wiring 4509 electrically connected to the FPC 4505 is manufactured in the same process (using the same material) as the first electrode 131; however, the present invention is not limited to this. The wiring 4509 is preferably formed in the same process as any of the conductive films included in the display device because the manufacturing process of the display device can be simplified.

On the sealing film 107 covering the light-emitting element 103 (the first electrode 131, the EL layer 133, and the second electrode 135), a color filter is provided in a region overlapping with the light-emitting region of the light-emitting element 103.

Here, the light emitting element 103 emits white light. The red pixel 180 </ b> R includes a red color filter 109 </ b> R in a region overlapping with the light emitting region of the light emitting element 103. The green pixel 180 </ b> G includes a green color filter 109 </ b> G in a region overlapping with the light emitting region of the light emitting element 103. The blue pixel 180 </ b> B includes a blue color filter 109 </ b> B in a region overlapping with the light emitting region of the light emitting element 103.

In the display device manufactured by applying one embodiment of the present invention, the display portion 4502 over the substrate 101 may be sealed with a counter substrate, for example, a display portion 4502, a driver circuit portion 4503, In addition, the substrate 101 and the counter substrate may be bonded to each other with a sealant arranged in a frame shape so as to surround the drive circuit portion 4504. Sealing with the use of the counter substrate is preferable because impurities such as moisture can be prevented from entering the light-emitting element and a highly reliable display device can be realized.

<< Example 2 of Manufacturing Method of Display Device >>
A method for manufacturing a display device of one embodiment of the present invention is described with reference to FIGS. Detailed description of the same steps as those of the display device manufacturing method 1 will be omitted.

[Fabrication of transistors]
First, the base insulating film 121 is formed over the substrate 101, and the transistor 123 is formed over the base insulating film 121. Then, an insulating film 125 and an insulating film 127 that cover the transistor 123 are formed.

There is no particular limitation on the structure of the transistor used for the display device. A top-gate transistor may be used, or a bottom-gate transistor such as an inverted staggered transistor may be used. There is no particular limitation on the material used for the transistor.

The gate electrode may be formed as a single layer or a stacked layer using a metal material such as molybdenum, titanium, chromium, tantalum, tungsten, aluminum, copper, neodymium, or scandium, or an alloy material containing these elements. it can.

The gate insulating layer can be formed using a single layer or a stack of silicon oxide, silicon nitride, silicon oxynitride, silicon nitride oxide, or aluminum oxide, for example, using a plasma CVD method, a sputtering method, or the like.

The semiconductor layer can be formed using a silicon semiconductor or an oxide semiconductor. Examples of the silicon semiconductor include single crystal silicon and polycrystalline silicon. As the oxide semiconductor, an In—Ga—Zn—O-based metal oxide or the like can be used as appropriate. Note that as the semiconductor layer 110, an oxide semiconductor that is an In—Ga—Zn—O-based metal oxide is used to form a semiconductor layer with low off-state current, so that the light-emitting element 103 formed later can be turned off. Leakage current can be suppressed, which is preferable.

As the source electrode and the drain electrode, for example, a metal film containing an element selected from aluminum, chromium, copper, tantalum, titanium, molybdenum, and tungsten, or a metal nitride film containing the element (titanium nitride film, molybdenum nitride film) , Tungsten nitride film) or the like can be used. Further, a refractory metal film such as titanium, molybdenum, tungsten or the like or a metal nitride film thereof (titanium nitride film, molybdenum nitride film, tungsten nitride film) on one or both of the lower side or upper side of a metal film such as aluminum or copper. It is good also as a structure which laminated | stacked. Further, the source electrode and the drain electrode may be formed using a conductive metal oxide. Examples of the conductive metal oxide include indium oxide (In ₂ O _{3 and the} like), tin oxide (SnO _{2 and the} like), zinc oxide (ZnO), indium tin oxide (ITO: Indium Tin Oxide), and indium zinc oxide (In ₂ O ₃ —ZnO or the like) or a metal oxide material containing silicon oxide can be used.

The insulating film 125 has an effect of suppressing diffusion of impurities into a semiconductor included in the transistor. As the insulating film 125, an inorganic insulating film such as a silicon oxide film, a silicon oxynitride film, or an aluminum oxide film can be used. The insulating film 125 is not necessarily provided if not necessary.

As the insulating film 127, it is preferable to select an insulating film having a planarization function in order to reduce surface unevenness due to the transistor. For example, an organic material such as polyimide, acrylic, or benzocyclobutene resin can be used. In addition to the organic material, a low dielectric constant material (low-k material), an inorganic material, or the like can be used. Note that the insulating film 127 may be formed by stacking a plurality of insulating films formed using these materials.

[Production of light-emitting element]
Next, the light-emitting element 103 is formed over the insulating film 125 and the insulating film 127. Then, a sealing film 107 that covers the light emitting element 103 is formed.

The light-emitting element 103 includes a first electrode 131, an EL layer 133, and a second electrode 135 as illustrated in FIG. The light emitting element 103 is a light emitting element having a top emission (top emission) structure. A conductive film that transmits visible light is used for the second electrode 135.

The first electrode 131 is electrically connected to the source electrode or the drain electrode of the transistor 123 through contact holes provided in the insulating film 125 and the insulating film 127. An end portion of the first electrode 131 is covered with an insulating layer 105. Note that FIG. 5A illustrates an example in which the wiring 4509 is formed using the same process and the same material as the first electrode 131.

[Production of red pixels]
Next, a red coloring material layer 199R is formed over the sealing film 107 (FIG. 5A).

Next, the red coloring material layer 199R covering the wiring 4509 is removed. Then, by inputting a signal to the wiring 4509, only some of the light emitting elements 103 are selectively caused to emit light. In the red coloring material layer 199R, a region irradiated with light from the light-emitting element 103 is cured.

Here, only the light emitting element 103 for which the red color filter 109R is to be provided on the light emitting region is selectively caused to emit light. The light-emitting element 103 that emits light at this time becomes a light-emitting element constituting the red pixel 180R. That is, the red coloring material layer 199 </ b> R in a region overlapping with the light emitting region of the light emitting element 103 constituting the red pixel 180 </ b> R is cured by being irradiated with visible light from the light emitting element 103.

Depending on the method for forming the coloring material layer, the wiring 4509 may be covered with the coloring material layer, and a signal may not be input to the wiring 4509. In such a case, the coloring material layer over the wiring 4509 is removed to such an extent that a signal can be input to the wiring 4509. For example, the coloring material layer over the wiring 4509 may be removed using an organic solvent such as acetone.

A method for inputting a signal to the wiring 4509 is not particularly limited. For example, the wiring 4509 can be connected to the wiring 4509 by connecting a probe (a needle, a probe), or an external input terminal such as an FPC can be electrically connected to the wiring 4509. A signal can be input to In this embodiment mode, a probe is applied to the wiring 4509 and a signal is input.

Next, development is performed to remove the uncured region of the red coloring material layer 199R. Accordingly, as illustrated in FIG. 5C, a red pixel 180R in which a red color filter 109R is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

[Production of green pixels]
Similarly, a green coloring material layer 199G is formed over the sealing film 107 and the red color filter 109R, and the green coloring material layer 199G over the wiring 4509 is removed. Then, by inputting a signal to the wiring 4509, only some of the light-emitting elements 103 are selectively caused to emit light (FIG. 6A). In the green coloring material layer 199G, a region irradiated with light from the light emitting element 103 is cured.

Here, only the light emitting element 103 for which the green color filter 109G is to be provided on the light emitting region is selectively caused to emit light. The light-emitting element 103 that emits light at this time becomes a light-emitting element constituting the green pixel 180G. That is, the green coloring material layer 199 </ b> G in a region overlapping the light emitting region of the light emitting element 103 constituting the green pixel 180 </ b> G is cured by being irradiated with visible light from the light emitting element 103.

Next, development is performed to remove an uncured region of the green coloring material layer 199G. Accordingly, as illustrated in FIG. 6B, a green pixel 180G in which a green color filter 109G is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

[Production of blue pixels]
Further, a blue coloring material layer 199B is formed over the sealing film 107, the red color filter 109R, and the green color filter 109G, and the blue coloring material layer 199B over the wiring 4509 is removed. Then, by inputting a signal to the wiring 4509, only some of the light-emitting elements 103 are selectively caused to emit light (FIG. 6B). In the blue coloring material layer 199 </ b> B, the region irradiated with light from the light-emitting element 103 is cured.

Here, only the light emitting element 103 for which the blue color filter 109B is to be provided on the light emitting region is selectively caused to emit light. The light emitting element 103 that emits light at this time becomes a light emitting element constituting the blue pixel 180B. That is, the blue coloring material layer 199 </ b> B in a region overlapping with the light emitting region of the light emitting element 103 constituting the blue pixel 180 </ b> B is cured by being irradiated with visible light from the light emitting element 103.

Next, development is performed to remove the uncured region of the blue coloring material layer 199B. Accordingly, as illustrated in FIG. 6C, a blue pixel 180B in which a blue color filter 109B is provided in a region overlapping with the light emitting region of the light emitting element 103 is formed.

Then, an FPC 4505 that is electrically connected to the wiring 4509 is provided. Note that this step can be omitted when the FPC is provided in the previous step. Note that a sealing film covering the color filter may be further formed.

Note that a black matrix may be formed before the color filter is formed or after the color filter is formed. Further, the insulating layer 105 may be colored black or the like.

Further, an insulating film covering the color filter or the black matrix may be provided. The material that can be used for the insulating film is similar to the material that can be used for the sealing film 107.

Through the above steps, the display device illustrated in FIG. 4B can be manufactured.

This embodiment can be freely combined with any of the other embodiments.

(Embodiment 2)
In this embodiment, an example of a light-emitting element will be described with reference to FIGS.

The light-emitting element exemplified in this embodiment includes a pair of electrodes (a first electrode and a second electrode) and an EL layer provided between the pair of electrodes. One of the pair of electrodes functions as an anode and the other functions as a cathode. The EL layer has at least a light emitting layer.

A display device which can be manufactured according to one embodiment of the present invention includes a light-emitting element having a top emission (top emission) structure. In the light-emitting element, a conductive film that transmits visible light is used for the upper electrode. The lower electrode is preferably a conductive film that reflects visible light.

The conductive film that transmits visible light can be formed using, for example, indium oxide, ITO, indium zinc oxide, zinc oxide, zinc oxide to which gallium is added, or the like. In addition, a metal material such as gold, platinum, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium, or titanium, or a nitride of these metal materials (for example, titanium nitride) has a light-transmitting property. It can be used by forming it as thin as possible. Further, graphene or the like may be used.

The conductive film that reflects visible light is, for example, a metal material such as aluminum, gold, platinum, silver, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium, an alloy of aluminum and titanium, or aluminum and nickel. An alloy, an alloy containing aluminum such as an alloy of aluminum and neodymium (aluminum alloy), or an alloy containing silver such as an alloy of silver and copper can be used. An alloy of silver and copper is preferable because of its high heat resistance. In addition, lanthanum, neodymium, germanium, or the like may be added to the metal material or alloy.

The electrodes may be formed using a vacuum deposition method or a sputtering method, respectively. In addition, when silver paste or the like is used, a coating method or an ink jet method may be used.

In addition, a display device which can be manufactured by applying another embodiment of the present invention includes a light-emitting element having a dual emission (double-sided emission) structure. In the light-emitting element, a conductive film that transmits visible light is used for both the upper electrode and the lower electrode.

The light-emitting element illustrated in FIG. 7A includes an EL layer 203 between the first electrode 201 and the second electrode 205. In this embodiment mode, the first electrode 201 functions as an anode and the second electrode 205 functions as a cathode.

When a voltage higher than the threshold voltage of the light-emitting element is applied between the first electrode 201 and the second electrode 205, holes are injected from the first electrode 201 side into the EL layer 203, and the second electrode 205 side From which electrons are injected. The injected electrons and holes are recombined in the EL layer 203, and the light-emitting substance contained in the EL layer 203 emits light.

As described above, the EL layer 203 includes at least a light emitting layer. The EL layer 203 is a layer other than the light-emitting layer, such as a substance having a high hole-injecting property, a substance having a high hole-transporting property, a hole blocking material, a substance having a high electron-transporting property, a substance having a high electron-injecting property A layer containing a substance (a substance having a high electron transporting property and a high hole transporting property) or the like may be further included.

A known substance can be used for the EL layer 203. Either a low molecular compound or a high molecular compound can be used, and an inorganic compound may be included. The layers constituting the EL layer 203 can be formed by a method such as a vapor deposition method (including a vacuum vapor deposition method), a transfer method, a printing method, an ink jet method, or a coating method.

A specific structure example of the EL layer 203 is illustrated in FIG. In the EL layer 203 illustrated in FIG. 7B, a hole injection layer 301, a hole transport layer 302, a light-emitting layer 303, an electron transport layer 304, and an electron injection layer 305 are stacked in this order from the first electrode 201 side. ing.

As in the light-emitting element illustrated in FIGS. 7C and 7D, a plurality of EL layers may be stacked between the first electrode 201 and the second electrode 205. In this case, an intermediate layer 207 is preferably provided between the stacked EL layers. The intermediate layer 207 has at least a charge generation region.

For example, the light-emitting element illustrated in FIG. 7C includes the intermediate layer 207 between the first EL layer 203a and the second EL layer 203b. In addition, the light-emitting element illustrated in FIG. 7D includes n EL layers (n is a natural number of 2 or more), and includes an intermediate layer 207 between the EL layers.

The behavior of electrons and holes in the intermediate layer 207 provided between the EL layer 203 (m) and the EL layer 203 (m + 1) will be described. When a voltage higher than the threshold voltage of the light-emitting element is applied between the first electrode 201 and the second electrode 205, holes and electrons are generated in the intermediate layer 207, and the holes are provided on the second electrode 205 side. The electron moves to the EL layer 203 (m + 1), and the electrons move to the EL layer 203 (m) provided on the first electrode 201 side. The holes injected into the EL layer 203 (m + 1) recombine with electrons injected from the second electrode 205 side, and the light-emitting substance contained in the EL layer 203 (m + 1) emits light. Further, electrons injected into the EL layer 203 (m) recombine with holes injected from the first electrode 201 side, so that a light-emitting substance contained in the EL layer 203 (m) emits light. Therefore, holes and electrons generated in the intermediate layer 207 emit light in different light emitting units.

Note that when the same structure as the intermediate layer is formed between the EL layers in contact with each other, the light emitting units can be provided in contact with each other. For example, in the case where a charge generation region is formed on one surface of the EL layer, the EL layer can be provided in contact with the surface.

Further, by making the light emission colors of the respective EL layers different, light emission of a desired color can be obtained as the whole light emitting element. For example, in a light-emitting element having two EL layers, a light-emitting element that emits white light as a whole of the light-emitting element by making the emission color of the first EL layer and the emission color of the second EL layer have a complementary relationship It is also possible to obtain The complementary color refers to a relationship between colors that become achromatic when mixed. That is, white light emission can be obtained by mixing light obtained from substances that emit light of complementary colors. The same applies to a light-emitting element having three or more EL layers.

This embodiment can be freely combined with any of the other embodiments.

(Embodiment 3)
In this embodiment, examples of electronic devices to which one embodiment of the present invention is applied will be described with reference to FIGS.

As an electronic device, for example, a television device (also referred to as a television or a television receiver), a monitor for a computer, a digital camera, a digital video camera, a digital photo frame, a mobile phone (also referred to as a mobile phone or a mobile phone device). And large game machines such as portable game machines, portable information terminals, sound reproduction apparatuses, and pachinko machines. Specific examples of these electronic devices are shown in FIGS.

FIG. 8A illustrates an example of a television device. In the television device 7100, a display portion 7102 is incorporated in a housing 7101. The display portion 7102 can display an image. A display device manufactured using one embodiment of the present invention can be used for the display portion 7102. Here, a structure in which the housing 7101 is supported by a stand 7103 is shown.

The television device 7100 can be operated with an operation switch included in the housing 7101 or a separate remote controller 7111. Channels and volume can be operated with operation keys included in the remote controller 7111, and an image displayed on the display portion 7102 can be operated. Further, the remote controller 7111 may be provided with a display unit that displays information output from the remote controller 7111.

Note that the television device 7100 is provided with a receiver, a modem, and the like. General TV broadcasts can be received by a receiver, and connected to a wired or wireless communication network via a modem, so that it can be unidirectional (sender to receiver) or bidirectional (sender and receiver). It is also possible to perform information communication between each other or between recipients).

FIG. 8B illustrates an example of a computer. A computer 7200 includes a main body 7201, a housing 7202, a display portion 7203, a keyboard 7204, an external connection port 7205, a pointing device 7206, and the like. Note that the computer is manufactured using the display device manufactured by applying one embodiment of the present invention for the display portion 7203.

FIG. 8C illustrates an example of a portable game machine. The portable game machine 7300 includes two housings, a housing 7301a and a housing 7301b, which are connected with a joint portion 7302 so that the portable game machine 7300 can be opened and closed. A display portion 7303a is incorporated in the housing 7301a, and a display portion 7303b is incorporated in the housing 7301b. 8C includes a speaker portion 7304, a recording medium insertion portion 7305, operation keys 7306, a connection terminal 7307, and a sensor 7308 (force, displacement, position, velocity, acceleration, angular velocity, rotation speed). , Distance, light, liquid, magnetism, temperature, chemical substance, sound, time, hardness, electric field, current, voltage, power, radiation, flow rate, humidity, gradient, vibration, smell, or infrared) LED lamp, microphone, etc. are provided. Needless to say, the structure of the portable game machine is not limited to the above, and any display device manufactured by applying one embodiment of the present invention to at least the display portion 7303a and the housing 7301b or one of them may be used. It is possible to adopt a configuration in which other accessory equipment is provided as appropriate. The portable game machine shown in FIG. 8C shares information by reading a program or data recorded on a recording medium and displaying the program or data on a display unit, or by performing wireless communication with another portable game machine. It has a function. Note that the function of the portable game machine illustrated in FIG. 8C is not limited to this, and the portable game machine can have a variety of functions.

FIG. 8D illustrates an example of a mobile phone. A mobile phone 7400 is provided with a display portion 7402 incorporated in a housing 7401, operation buttons 7403, an external connection port 7404, a speaker 7405, a microphone 7406, and the like. Note that the mobile phone 7400 includes a display device manufactured by applying one embodiment of the present invention, in the display portion 7402.

Information can be input to the cellular phone 7400 illustrated in FIG. 8D by touching the display portion 7402 with a finger or the like. In addition, operations such as making a call or creating a mail can be performed by touching the display portion 7402 with a finger or the like.

There are mainly three screen modes of the display portion 7402. The first mode is a display mode mainly for displaying an image. The first is a display mode mainly for displaying images, and the second is an input mode mainly for inputting information such as characters. The third is a display + input mode in which the display mode and the input mode are mixed.

For example, when making a call or creating a mail, the display portion 7402 may be set to a character input mode mainly for inputting characters, and an operation for inputting characters displayed on the screen may be performed.

In addition, by providing a detection device having a sensor for detecting inclination, such as a gyroscope or an acceleration sensor, in the mobile phone 7400, the orientation (vertical or horizontal) of the mobile phone 7400 is determined, and the screen display of the display portion 7402 is displayed. Can be switched automatically.

Further, the screen mode is switched by touching the display portion 7402 or operating the operation button 7403 of the housing 7401. Further, switching can be performed depending on the type of image displayed on the display portion 7402. For example, if the image signal to be displayed on the display unit is moving image data, the mode is switched to the display mode.

Further, in the input mode, when a signal detected by the optical sensor of the display unit 7402 is detected and there is no input by a touch operation of the display unit 7402 for a certain period, the screen mode is switched from the input mode to the display mode. You may control.

The display portion 7402 can function as an image sensor. For example, personal authentication can be performed by touching the display portion 7402 with a palm or a finger and capturing an image of a palm print, a fingerprint, or the like. In addition, if a backlight that emits near-infrared light or a sensing light source that emits near-infrared light is used for the display portion, finger veins, palm veins, and the like can be imaged.

FIG. 8E illustrates an example of a tablet terminal that can be folded (opened state). The tablet terminal 7500 includes a housing 7501a, a housing 7501b, a display portion 7502a, and a display portion 7502b. The housing 7501a and the housing 7501b are connected by a shaft portion 7503, and an opening / closing operation can be performed using the shaft portion 7503 as an axis. The housing 7501a includes a power source 7504, operation keys 7505, a speaker 7506, and the like. Note that the tablet terminal 7500 is manufactured using the display device manufactured by applying one embodiment of the present invention for both the display portion 7502a and the display portion 7502b.

At least part of the display portion 7502a and the display portion 7502b can be a touch panel region, and data can be input by touching displayed operation keys. For example, keyboard buttons can be displayed on the entire surface of the display portion 7502a to form a touch panel, and the display portion 7502b can be used as a display screen.

This embodiment can be freely combined with any of the other embodiments.

101 Substrate 103 Light-Emitting Element 105 Insulating Layer 106 Partition 107 Sealing Film 109 Color Filter 109B Blue Color Filter 109G Green Color Filter 109R Red Color Filter 110 Semiconductor Layer 121 Base Insulating Film 123 Transistor 125 Insulating Film 127 Insulating Film 131 First Electrode 133 EL layer 135 second electrode 180B blue pixel 180G green pixel 180R red pixel 199 coloring material layer 199B blue coloring material layer 199G green coloring material layer 199R red coloring material layer 201 first electrode 203 EL layer 203a First EL layer 203b Second EL layer 205 Second electrode 207 Intermediate layer 301 Hole injection layer 302 Hole transport layer 303 Light emitting layer 304 Electron transport layer 305 Electron injection layer 1108 Connection wiring 1109a FPC
1109b FPC
4502 Display portion 4503 Drive circuit portion 4504 Drive circuit portion 4505 FPC
4509 Wiring 7100 Television apparatus 7101 Case 7102 Display portion 7103 Stand 7111 Remote control operation device 7200 Computer 7201 Main body 7202 Case 7203 Display portion 7204 Keyboard 7205 External connection port 7206 Pointing device 7300 Portable game machine 7301a Case 7301b Case 7302 Connection Unit 7303a display unit 7303b display unit 7304 speaker unit 7305 recording medium insertion unit 7306 operation key 7307 connection terminal 7308 sensor 7400 mobile phone 7401 case 7402 display unit 7403 operation button 7404 external connection port 7405 speaker 7406 microphone 7500 tablet terminal 7501a case 7501b Housing 7502a Display unit 7502b Display unit 7503 Shaft unit 7504 Power supply 7505 Work key 7506 speaker

Claims (5)

Forming a first electrode, a layer containing a light-emitting organic compound, and a second electrode that transmits visible light in this order, thereby producing a light-emitting element;
A second step of forming a sealing film in contact with the second electrode and covering the light emitting element;
A third step of forming a colored material layer that is cured by light emitted from the light emitting element on the sealing film;
A fourth step of curing the region of the coloring material layer overlapping the light emitting region of the light emitting device by causing the light emitting device to emit light;
And a fifth step of removing an uncured region of the coloring material layer by development. In claim 1,
In the third step, a method for manufacturing a display device, in which the coloring material layer is formed using a pigment or dye, a binder, and a visible light curable photopolymerization initiator. The first electrode, the layer containing a light-emitting organic compound, and the second electrode that transmits visible light are formed in this order, whereby the first light-emitting element and the second light-emitting element are manufactured. Steps,
A second step of forming a sealing film in contact with the second electrode and covering the first light emitting element and the second light emitting element;
A third step of forming a first coloring material layer cured on the sealing film by light emitted from the first light emitting element;
A fourth step of curing the region overlapping the light emitting region of the first light emitting element of the first coloring material layer by causing the first light emitting element to emit light;
A fifth step of removing uncured regions of the first coloring material layer by development;
A sixth step of forming a second coloring material layer that is cured by light emitted from the second light emitting element on the sealing film;
A seventh step of curing the region of the second coloring material layer overlapping the light emitting region of the second light emitting device by causing the second light emitting device to emit light;
And an eighth step of removing an uncured region of the second coloring material layer by development. In claim 3,
In the third step, a method for manufacturing a display device, in which the first coloring material layer is formed using a pigment or dye, a binder, and a visible light curable photopolymerization initiator. In claim 3 or claim 4,
In the sixth step, a method for manufacturing a display device, in which the second coloring material layer is formed using a pigment or dye, a binder, and a visible light curable photopolymerization initiator.

Images