Display device, production method for display device, and electronic apparatus

Abstract

Provided is a display device comprising first, second, and third light-emitting elements that radiate light of different colors from each other, wherein the first light-emitting element has a first color filter having a first color, the second and third light-emitting elements each have a second color filter having a second color that is complementary to the first color, and a separation layer made of a color filter material having the first color is provided at a boundary between the second light-emitting element and the third light-emitting element.

Description

Display device, method for manufacturing a display device, and electronic device

[0001] This disclosure relates to a display device, a method for manufacturing a display device, and an electronic device.

[0002] In recent years, the development of display devices using electroluminescent (EL) elements as light-emitting elements has progressed. In such display devices, for example, multiple light-emitting elements, each having a stacked structure composed of a lower electrode, a light-emitting layer stacked on the lower electrode, and an upper electrode stacked on the light-emitting layer, are arranged on a substrate. In each light-emitting element, a predetermined voltage is supplied to the lower electrode and the upper electrode, causing the light-emitting layer sandwiched between the lower electrode and the upper electrode to emit light. Furthermore, each light-emitting element has an on-chip lens that guides the light from the light-emitting layer in a desired direction.

[0003] Japanese Patent Publication No. 2015-37062

[0004] In conventional technology, light emitted from the light-emitting layer of one light-emitting element may enter the on-chip lens of another light-emitting element adjacent to that element. In particular, as display devices become smaller and the space between light-emitting elements narrows, the likelihood of this phenomenon occurring increases. The light that enters the on-chip lens of another light-emitting element is then refracted at the interface between the outermost surface of the display device and the air, causing ghosting (virtual images) in the image produced by the display device. Therefore, in order to suppress the occurrence of such ghosting, conventional technology has proposed providing a color filter for each color of light emitted by the light-emitting element. However, if multiple types of color filters corresponding to the colors of light emitted by the light-emitting elements are provided, it is difficult to avoid increasing the manufacturing cost of the display device.

[0005] Therefore, this disclosure proposes a technology that can suppress the occurrence of ghosting (false images) while avoiding an increase in the manufacturing cost of the display device.

[0006] According to the present disclosure, there is provided a display device including first, second, and third light-emitting elements that emit lights having different colors from each other. The first light-emitting element has a first color filter having a first color. The second and third light-emitting elements have a second color filter having a second color that is a complementary color to the first color. A separation layer made of a color filter material having the first color is provided at a boundary between the second light-emitting element and the third light-emitting element.

[0007] Furthermore, according to the present disclosure, there is provided a method of manufacturing a display device including first, second, and third light-emitting elements that emit lights having different colors from each other, the method including: forming a stacked structure of the first, second, and third light-emitting elements on a substrate; forming a second color filter having a second color that is a complementary color to a first color on the stacked structure of the second and third light-emitting elements; and simultaneously forming a first color filter having the first color on the stacked structure of the first light-emitting element and forming a separation layer made of a color filter material having the first color between the second color filters.

[0008] Furthermore, according to the present disclosure, there is provided an electronic device equipped with a display device. The display device includes first, second, and third light-emitting elements that emit lights having different colors from each other. The first light-emitting element has a first color filter having a first color. The second and third light-emitting elements have a second color filter having a second color that is a complementary color to the first color. A separation layer made of a color filter material having the first color is provided at a boundary between the second light-emitting element and the third light-emitting element.

[0009] This is a schematic diagram showing an example of the overall configuration of a display device according to an embodiment of the present disclosure. This is a schematic circuit diagram for explaining the wiring relationship in the sub-pixel of the mth row and nth column. This is a cross-sectional view for explaining an example of the pixel configuration according to a comparative example. This is an explanatory diagram for explaining the problems in the comparative example. This is a cross-sectional view (1) for explaining another example of the pixel configuration according to a comparative example. This is a cross-sectional view (2) for explaining another example of the pixel configuration according to a comparative example. This is a cross-sectional view for explaining an example of the pixel configuration according to the first embodiment of the present disclosure. This is a plan view for explaining an example of the pixel configuration according to the first embodiment of the present disclosure. This is a cross-sectional view (1) for explaining an example of the pixel configuration according to detailed configuration example 1 of the first embodiment of the present disclosure. This is a cross-sectional view (2) for explaining an example of the pixel configuration according to detailed configuration example 1 of the first embodiment of the present disclosure. This is a cross-sectional view (1) for explaining an example of the pixel configuration according to detailed configuration example 2 of the first embodiment of the present disclosure. This is a cross-sectional view (2) for explaining an example of the pixel configuration according to detailed configuration example 2 of the first embodiment of the present disclosure. This is a cross-sectional view (3) for explaining an example of the pixel configuration according to detailed configuration example 2 of the first embodiment of the present disclosure. This is an explanatory diagram (part 1) illustrating the method for manufacturing a pixel according to the first embodiment of this disclosure. This is an explanatory diagram (part 2) illustrating the method for manufacturing a pixel according to the first embodiment of this disclosure. This is a plan view illustrating an example of the configuration of a pixel according to the second embodiment of this disclosure. This is a cross-sectional view (part 1) illustrating an example of the configuration of a color filter according to the third embodiment of this disclosure. This is a cross-sectional view (part 2) illustrating an example of the configuration of a color filter according to the third embodiment of this disclosure. This is a cross-sectional view (part 3) illustrating an example of the configuration of a color filter according to the third embodiment of this disclosure. This is a cross-sectional view (part 4) illustrating an example of the configuration of a color filter according to the third embodiment of this disclosure. This is a cross-sectional view (part 5) illustrating an example of the configuration of a color filter according to the third embodiment of this disclosure. This is a cross-sectional view (part 1) illustrating an example of the configuration of a pixel according to the fourth embodiment of this disclosure. This is a cross-sectional view (part 2) illustrating an example of the configuration of a pixel according to the fourth embodiment of this disclosure. This is a cross-sectional view (part 3) illustrating an example of the configuration of a pixel according to the fourth embodiment of this disclosure.This is a conceptual diagram (1) to explain the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN" passing through the center of the wavelength-selecting part. This is a conceptual diagram (2) to explain the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN" passing through the center of the wavelength-selecting part. This is a conceptual diagram (3) to explain the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN" passing through the center of the wavelength-selecting part. This is a conceptual diagram (4) to explain the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN" passing through the center of the wavelength-selecting part. This is a conceptual diagram (No. 5) illustrating the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN'' passing through the center of the wavelength selection part. This is a conceptual diagram (No. 6) illustrating the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN'' passing through the center of the wavelength selection part. This is a conceptual diagram (No. 7) illustrating the relationship between the normal vector LN passing through the center of the light-emitting part, the normal vector LN' passing through the center of the lens member, and the normal vector LN'' passing through the center of the wavelength selection part. This is a schematic cross-sectional view illustrating the first example of a resonator structure. This is a schematic cross-sectional view illustrating the second example of a resonator structure. This is a schematic cross-sectional view illustrating the third example of a resonator structure. This is a schematic cross-sectional view illustrating the fourth example of a resonator structure. This is a schematic cross-sectional view illustrating the fifth example of a resonator structure. This is a schematic cross-sectional view illustrating the sixth example of a resonator structure. This is a schematic cross-sectional view illustrating the seventh example of a resonator structure. This is a front view showing an example of the appearance of a digital still camera. This is a rear view showing an example of the appearance of a digital still camera. This is an external view of a head-mounted display. This is an external view of a see-through head-mounted display. This is an external view of a television system. This is an external view of a smartphone. This is a diagram (No. 1) showing the internal configuration of an automobile. This is a diagram (No. 2) showing the internal configuration of an automobile.

[0010] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted. In the present specification and drawings, a plurality of components having substantially the same or similar functional configurations may be distinguished by attaching different alphabets after the same reference numeral. However, when it is not necessary to particularly distinguish each of the plurality of components having substantially the same or similar functional configurations, only the same reference numeral is attached.

[0011] Further, the drawings referred to in the following description are for explaining an embodiment of the present disclosure and facilitating its understanding. For ease of understanding, the shapes, dimensions, ratios, etc. shown in the drawings may be different from the actual ones. Furthermore, the devices shown in the drawings can be appropriately modified in design in consideration of the following description and known techniques.

[0012] The description of the specific shapes in the following description does not mean only geometrically defined shapes. Specifically, the description of the shapes in the following description includes cases where there are differences (errors and distortions) within an acceptable range in light-emitting elements, display devices (light-emitting devices), their manufacturing processes, and their use and operation, as well as shapes similar to those shapes.

[0013] In the following description of circuits (electrical connections), unless otherwise specified, "electrically connected" means connecting such that electricity (signals) can conduct between a plurality of elements. In addition, the "electrically connected" in the following description includes not only cases where a plurality of elements are directly and electrically connected, but also cases where they are indirectly and electrically connected via other elements.

[0014] The explanation will be presented in the following order: 1. Overall configuration of the display device according to the embodiment of this disclosure 2. Background 3. First embodiment 3.1 Basic configuration 3.2 Detailed configuration 3.3 Manufacturing method 4. Second embodiment 5. Third embodiment 6. Fourth embodiment 7. Summary 8. Modifications 8.1 Modification 1 8.2 Modification 2 9. Application examples 10. Supplementary information

[0015] <<1. Overall Configuration of the Display Device According to the Embodiment of the Disclosure>> Referring to Figure 1, an example of the overall configuration of an organic EL (Electro-Luminescence) display device (display device) 10 (hereinafter simply referred to as "display device 10") according to the embodiment of the disclosure, which is used as a display device or lighting device, will be described. Figure 1 is a schematic diagram showing an example of the overall configuration of the display device 10 according to the embodiment of the disclosure.

[0016] The display device 10 is a device in which light-emitting elements such as OLEDs (Organic Light Emitting Diodes) or Micro-OLEDs are formed in an array. Such a display device 10 can be applied as a display device for VR (Virtual Reality), MR (Mixed Reality), or AR (Augmented Reality), an electronic viewfinder (EVF), or a small projector, etc. The display device 10 can also be applied to various lighting devices. Note that the display device 10 may use light-emitting elements made of inorganic materials instead of light-emitting elements made of organic materials such as OLEDs.

[0017] The display device 10 has a display area (pixel array area) and a peripheral area provided around the periphery of the display area. As shown in Figure 1, within the display area of ​​the display device 10, for example, a plurality of subpixels 100R, 100G, and 100B are arranged in a matrix. For example, subpixel 100R can emit red light (for example, light with a wavelength of 580 nm to 640 nm), subpixel 100G can emit green light (for example, light with a wavelength of 510 nm to 550 nm), and subpixel 100B can emit blue light (for example, light with a wavelength of 450 nm to 480 nm). In the following description, when subpixels 100R, 100G, and 100B are not specifically distinguished, they will be referred to as subpixel 100.

[0018] Furthermore, in this embodiment, one pixel 20 is composed of, for example, three types of sub-pixels 100R, 100G, and 100B that emit different light. In this embodiment, the number and arrangement of each of the three types of sub-pixels 100R, 100G, and 100B included in one pixel 20 are not particularly limited. Also, a pixel 20 means the smallest unit (pixel) controlled when controlling the light emission of the display device 10, and is composed of a plurality of sub-pixels 100 that are treated as a single unit during control. In other words, in this embodiment, the display device 10 has a plurality of pixels 20 arranged in a matrix on the substrate 200.

[0019] Furthermore, as shown in Figure 1, a horizontal drive circuit 11 and a vertical drive circuit 12 are provided in the peripheral area of ​​the display device 10.

[0020] The horizontal drive circuit 11 scans each sub-pixel 100 row by row (in Figure 1, the direction extending along the X direction is called the row direction) when writing a signal to each sub-pixel 100, and can sequentially supply a scan signal to each scan line SCLm. The horizontal drive circuit 11 can be configured, for example, by a shift register that sequentially shifts (transfers) start pulses in synchronization with the input clock pulse.

[0021] Further, the vertical drive circuit 12 can supply the signal voltage of a signal corresponding to the luminance information supplied from a signal supply source (not shown) to the sub-pixels 100 selected in units of columns (in FIG. 1, the direction extending along the Y direction is called the column direction) via the signal lines DTLn.

[0022] In the embodiment of the present disclosure, the configuration of the display device 10 is not limited to the configuration shown in FIG. 1. That is, the configuration shown in FIG. 1 is merely an example, and various configurations can be adopted in the display device 10 according to the embodiment of the present disclosure.

[0023] Next, referring to FIG. 2, the circuit configuration of the sub-pixel 100 at the m-th row and n-th column will be described. FIG. 2 is a schematic circuit diagram for explaining the connection relationship of the sub-pixel 100 at the m-th row and n-th column.

[0024] In the display device 10, as described above, the sub-pixel 100 including the light-emitting element ELP is arranged in a two-dimensional matrix in a state of being connected to the scanning lines SCL ｍ extending in the row direction (X direction in FIG. 1) ｎ and the signal lines DTL extending in the column direction (Y direction in FIG. 1).

[0025] Further, as shown in FIG. 2, the display device 10 has a power supply line PS1 ｍ for supplying a driving voltage to the sub-pixels 100, ｍ and a common power supply line PS2 commonly connected to all the sub-pixels 100. Then, a predetermined driving voltage V ｃｃ etc. is supplied to the power supply line PS1, Ｃａｔ and a common voltage V (for example, ground potential) is supplied to the common power supply line PS2.

[0026] Here, let the number of the scanning lines SCL and the power supply lines PS1 be M each. The sub-pixels 100 in the m-th row (where m = 1, 2,..., P) are connected to the m-th scanning line SCL ｍ and the m-th power supply line PS1 ｍ and constitute one display element row. In FIG. 2, the scanning lines SCL ｍ and the power supply lines PS1 ｍOnly is shown. Also, let the number of signal lines DTL be N. Subpixel 100 of the nth column (where n = 1, 2..., N) is the nth signal line DTL ｎ It is connected to the signal line DTL in Figure 2. ｎ Only the following is shown. Hereafter, the subpixel 100 located in the mth row and nth column may be referred to as the (n,m)th subpixel 100.

[0027] As explained earlier, the display device 10 is scanned sequentially row by row by the scanning signal from the horizontal drive circuit 11. More specifically, in the display device 10, M subpixels 100 arranged in the mth row are driven simultaneously. In other words, for the M subpixels 100 arranged along the row direction, the timing of their illumination / de-illumination is controlled on a row-by-row basis. For example, if the display frame rate of the display device 10 is FR (frames / second), the scanning period per row (the so-called horizontal scanning period) when the display device 10 is scanned sequentially row by row will be less than (1 / FR) × (1 / P) seconds.

[0028] Furthermore, as shown in Figure 2, the sub-pixel 100 is composed of a light-emitting element ELP and a drive circuit that drives it. The light-emitting element ELP consists of an organic electroluminescent light-emitting element or an inorganic electroluminescent light-emitting element. The drive circuit is a writing transistor TR Ｗ , and drive transistor TR Ｄ , and also, capacity section C １ It consists of the following: drive transistor TR Ｄ When current flows through the light-emitting element ELP, the ELP can emit light. Each transistor is composed of, for example, a p-channel field-effect transistor.

[0029] As shown in Figure 2, in the subpixel 100, the drive transistor TR Ｄ One of the source / drain regions is the capacitance section C １ One end and power supply line PS1 ｍ The source / drain region of the other side is electrically connected to one end of the light-emitting element ELP (specifically, the anode electrode). ＤThe gate electrode is the writing transistor TR Ｗ It is connected to the other source / drain region, and the capacitance section C １ It is electrically connected to the other end.

[0030] Also, as shown in Figure 2, the writing transistor TR Ｗ One of the source / drain regions is the signal line DTL ｎ It is electrically connected to the writing transistor TR Ｗ The gate electrode is the scan line SCL ｍ It is electrically connected to it.

[0031] Furthermore, as shown in Figure 2, the other end of the light-emitting element ELP (specifically, the cathode electrode) is electrically connected to the common power supply line PS2. In addition, a predetermined cathode voltage V is supplied to the common power supply line PS2. Ｃａｔ This is supplied. In Figure 2, the capacitance of the light-emitting element ELP is represented by the symbol CEL.

[0032] The overview of the driving of the subpixel 100 will be explained. In the subpixel 100, the signal line DTL is transmitted from the vertical drive circuit 12. ｎ With a voltage corresponding to the brightness of the image to be displayed supplied, the writing transistor TR is activated by a scanning signal from the horizontal drive circuit 11. Ｗ When it is in a conductive state, capacitance part C １ A voltage corresponding to the brightness is written to it. (Writing transistor TR) Ｗ After the capacitor is de-conducted, the capacitance part C １ The drive transistor TR operates according to the voltage held in Ｄ When an electric current flows through it, the light-emitting element ELP emits light.

[0033] In the embodiments of this disclosure, the configuration of the drive circuit that controls the light emission of the light-emitting element ELP is not limited to the configuration shown in Figure 2. Therefore, the configuration shown in Figure 2 is merely an example, and various configurations can be taken in the display device 10 according to the embodiments of this disclosure.

[0034] <<2. Background>> Next, before describing the details of the embodiments of this disclosure with reference to Figures 3 to 6, the background leading to the inventor's creation of the embodiments of this disclosure will be explained. Figure 3 is a cross-sectional view illustrating an example of the configuration of a pixel 20a according to a comparative example, and more specifically, it corresponds to a cross-section when the pixel 20a is cut along the film thickness direction of the substrate 200. Figure 4 is an explanatory diagram illustrating the problems in the comparative example, and more specifically, it shows an image produced by the light-emitting element 110 according to the comparative example. Furthermore, Figures 5 and 6 are cross-sectional views illustrating another example of the configuration of pixels 20b and 20c according to the comparative example, and more specifically, they correspond to cross-sections when the pixels 20b and 20c are cut along the film thickness direction of the substrate 200. Here, "comparative example" means the configurations of pixels 20a, 20b, and 20c, and the configuration of the display device 10 including them, which the inventor had been studying before creating the embodiments of this disclosure.

[0035] In the comparative example, the display device 10 has a plurality of pixels 20a. The pixels 20a are composed of a combination of three types of subpixels 100R, 100G, and 100B. Here, subpixel 100R has a light-emitting element 110r that emits red light, subpixel 100G has a light-emitting element 110g that emits green light, and subpixel 100B has a light-emitting element 110b that emits blue light.

[0036] Furthermore, in the comparative example, each light-emitting element 110 has a laminated structure consisting of an anode electrode 210 provided on a substrate 200, a light-emitting layer 212 laminated on the anode electrode 210, and a cathode electrode 214 laminated on the light-emitting layer 212 and transmitting light from the light-emitting layer 212, as shown in Figure 3. In the comparative example, as shown in Figure 3, the laminated structure is covered with a protective film 220 and a planarization film 240, and an on-chip lens 250 is provided for each light-emitting element 110. In the comparative example, a counter substrate 270 is provided on the on-chip lens 250 via a sealing film 260. Note that in the comparative example shown in Figure 3, no color filter is provided.

[0037] In the pixel 20a of this comparative example, a predetermined voltage is supplied to the anode electrode 210 and the cathode electrode 214, causing the light-emitting layer 212 sandwiched between the anode electrode 210 and the cathode electrode 214 to emit light. More specifically, in the comparative example, light is emitted from the light-emitting layer 212 along the direction from the anode electrode 210 toward the cathode electrode 214. In other words, the display device 10 of the comparative example can be said to be a top-emission type light-emitting device.

[0038] In the comparative example shown in Figure 3, for example, some of the light emitted from the light-emitting layer 212r of the light-emitting element 110r travels upward in front of the light-emitting layer 212r and is incident on the on-chip lens 250 of the light-emitting element 110r. Furthermore, some of the light emitted from the light-emitting layer 212 of the light-emitting element 110r travels diagonally upward in front of the light-emitting layer 212. In the comparative example, since light with wavelengths other than specific wavelengths is not blocked by the color filter, the light that travels diagonally upward in front of the light-emitting layer 212r is incident on the on-chip lenses 250 of the light-emitting elements 110b and 110g adjacent to the light-emitting element 110r. The light that is incident on the on-chip lenses 250 of the adjacent light-emitting elements 110b and 110g is refracted at the interface between the opposing substrate 270 and the air. As a result, in the comparative example, the light that travels diagonally upward in front of the light-emitting layer 212r may cause ghosting (virtual images) in the image of the display device 10.

[0039] In detail, as shown in Figure 4, a real image 310 is displayed in the center of the image 300 due to light traveling upward from the light-emitting element 110r. In addition, in the image 300, a ghost (virtual image) 320 (circled in Figure 4) is generated at a position far from the real image 310 due to light traveling diagonally upward from the light-emitting element 110r.

[0040] Therefore, in order to suppress the occurrence of such ghosts 320, a pixel 20b as shown in Figure 5 was considered. In the pixel 20b of the comparative example, color filters 230b, 230g, and 230r are provided that transmit the wavelength components of the color of the light emitted from the light-emitting layers 212b, 212g, and 212r of each light-emitting element 110b, 110g, and 110r. Specifically, in the comparative example shown in Figure 5, the light-emitting element 110b is provided with a color filter 230b that transmits the blue wavelength component, the light-emitting element 110g is provided with a color filter 230g that transmits the green wavelength component, and the light-emitting element 110r is provided with a color filter 230r that transmits the red wavelength component. In this way, even if the red light emitted from the light-emitting layer 212r of the light-emitting element 110r travels diagonally upward from the light-emitting layer 212r, it is blocked by the color filters 230b and 230g, and therefore does not enter the on-chip lenses 250 of the light-emitting elements 110b and 110g adjacent to the light-emitting element 110r. As a result, in the comparative example shown in Figure 5, the occurrence of ghosting 320 in the image 300 can be suppressed.

[0041] However, in the comparative example shown in Figure 5, since three types of color filters 230b, 230g, and 230r are provided, it leads to an increase in the manufacturing cost of the display device 10.

[0042] Therefore, in order to suppress the occurrence of ghosting 320 while avoiding an increase in manufacturing costs, a pixel 20c as shown in Figure 6 was considered. In the comparative example of pixel 20c, the light-emitting element 110g is provided with a color filter 230g that transmits the green wavelength component, and the light-emitting elements 110b and 110r are provided with a color filter 230m that transmits the magenta wavelength component, which is complementary to green. Thus, in the pixel 20c shown in Figure 6, since two types of color filters 230g and 230m are provided, the increase in manufacturing costs can be suppressed compared to the pixel 20b shown in Figure 5.

[0043] Furthermore, in the comparative example shown in Figure 6, even if the red light emitted from the light-emitting layer 212r of the light-emitting element 110r travels to the upper right of the light-emitting layer 212r, it is blocked by the color filter 230g of the light-emitting element 110g adjacent to the light-emitting element 110r, and therefore does not enter the on-chip lens 250 of the light-emitting element 110g. As a result, in the comparative example in Figure 6, the occurrence of ghosting 320 on one side of the real image 310 can be suppressed. However, in the comparative example in Figure 6, if the red light emitted from the light-emitting layer 212r of the light-emitting element 110r travels to the upper left of the light-emitting layer 212, it is not sufficiently blocked by the color filter 230m and may enter the on-chip lens 250 of the light-emitting element 110b. As a result, in the comparative example in Figure 6, ghosting 320 may occur on the other side of the real image 310.

[0044] Therefore, in light of these circumstances, the inventors have created the embodiments of the present disclosure described below in order to suppress the occurrence of ghosting while avoiding an increase in manufacturing costs. The details of the embodiments of the present disclosure created by the inventors will be described in order below.

[0045] <<3. First Embodiment>> <3.1 Basic Configuration> Next, the detailed configuration of the pixel 20 according to the first embodiment of the present disclosure will be described with reference to Figures 7A and 7B. Figure 7A is a cross-sectional view illustrating an example of the configuration of the pixel 20 according to this embodiment, and in detail corresponds to a cross-section when the pixel 20 is cut along the film thickness direction of the substrate 200. Figure 7B is a plan view illustrating an example of the configuration of the pixel 20 according to this embodiment, and in detail corresponds to a plane when the color filter 230 of the pixel 20 is cut along the plane direction of the substrate 200.

[0046] In the following explanation and reference diagrams, elements corresponding to the blue wavelength component of light are denoted with "b" or "B", elements corresponding to the green wavelength component of light are denoted with "g" or "G", and elements corresponding to the red wavelength component of light are denoted with "r" or "R". Furthermore, in the following explanation and reference diagrams, elements corresponding to the cyan wavelength component of light are denoted with "c", elements corresponding to the magenta wavelength component of light are denoted with "m", and elements corresponding to the yellow wavelength component of light are denoted with "y". Note that cyan is complementary to red, magenta is complementary to green light, and yellow is complementary to blue.

[0047] In this embodiment, pixels 20 are arranged in a matrix within the display area (pixel array) of the display device 10. As shown in Figure 7A, the pixels 20 are composed of, for example, a combination of three types of sub-pixels 100R, 100G, and 100B. Furthermore, sub-pixel 100B has a light-emitting element 110b (an example of a second light-emitting element) that emits blue light (for example, light with a wavelength of 450 nm to 480 nm), sub-pixel 100G has a light-emitting element 110g (an example of a first light-emitting element) that emits green light (for example, light with a wavelength of 510 nm to 550 nm), and sub-pixel 100R has a light-emitting element 110r (an example of a third light-emitting element) that emits red light (for example, light with a wavelength of 580 nm to 640 nm). In this embodiment, the number and arrangement of the three types of subpixels 100B, 100G, and 100R (light-emitting elements 110b, 110g, and 110r) contained in one pixel 20, as well as the color (wavelength) of the light, are not limited to the example described above. Furthermore, the details of the correspondence between the light-emitting element 110, the light-emitting layer 212, and the color filter 230 in this embodiment will be described later.

[0048] Furthermore, in this embodiment, as shown in Figure 7A, each light-emitting element 110b, 110g, and 110r has a laminated structure that is separated from each other. More specifically, each light-emitting element 110b, 110g, and 110r has a laminated structure consisting of an anode electrode (lower electrode) 210 provided on a substrate 200, a light-emitting layer 212 (more specifically, light-emitting layers 212b, 212g, and 212r) laminated on the anode electrode 210, and a cathode electrode (upper electrode) 214 laminated on the light-emitting layer 212.

[0049] The substrate 200 can be formed from a transparent material such as glass or a semiconductor material such as silicon. For example, a drive circuit for driving the light-emitting element 110 can be constructed by appropriately forming transistors, wiring, etc., within the substrate 200. An anode electrode 210, etc., which will be described later, is provided on the substrate 200. For example, a voltage can be applied to the anode electrode 210 via a via (not shown) etc. provided on the substrate 200.

[0050] In detail, the substrate 200 can be formed from a glass substrate such as high-strain point glass, soda glass, borosilicate glass, forsterite, lead glass, or quartz glass; a semiconductor substrate such as amorphous silicon or polycrystalline silicon; or a resin substrate such as polymethyl methacrylate, polyvinyl alcohol, polyvinylphenol, polyethersulfone, polyimide, polycarbonate, polyethylene terephthalate, or polyethylene naphthalate.

[0051] In this embodiment, the anode electrode 210 of each light-emitting element 110 is provided on the substrate 200 individually for each light-emitting element 110, that is, separated. When a voltage is applied between the anode electrode 210 and the cathode electrode 214, which will be described later, holes are injected from the anode electrode 210 into the light-emitting layer 212, which will be described later.

[0052] Preferably, the anode electrode 210 has not only the function of an electrode but also the function of a reflective layer. In such cases, it is preferable for the anode electrode to be made of a metal film that has as high a reflectivity as possible and a large work function in order to improve the efficiency of light extraction. Therefore, in this embodiment, it is preferable that the anode electrode 210 be formed from a metal film having the above-mentioned properties. Examples of such metal films include metal films containing at least one of the elements and alloys of metals such as chromium (Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), molybdenum (Mo), titanium (Ti), tantalum (Ta), aluminum (Al), magnesium (Mg), iron (Fe), tungsten (W), and silver (Ag). Specific examples of the above alloys include aluminum (Al) alloys such as AlNi alloy or AlCu alloy, and silver (Ag) alloys such as MgAg alloy.

[0053] Furthermore, the outermost surface of the anode electrode 210 may be covered with a transparent conductive film. By making the surface of the anode electrode 210 that is in contact with the light-emitting layer 212 a transparent conductive film, it is possible to improve adhesion with the light-emitting layer 212 while maintaining high conductivity. Furthermore, by appropriately selecting the material of the transparent conductive film, the hole injection barrier to the light-emitting layer 212 can be lowered in terms of work function, and the driving voltage of the display device 10 can be reduced. Moreover, even if the outermost surface of the anode electrode 210 is rough due to damage during the manufacturing process, the surface can be flattened by covering it with a transparent conductive film. In this way, the light-emitting layer 212 laminated on the anode electrode 210 can be made into a higher quality film.

[0054] In this embodiment, the transparent conductive film may include, for example, at least one selected from the group consisting of transparent conductive oxides containing indium (In) (hereinafter referred to as "indium-based transparent conductive oxide"), transparent conductive oxides containing tin (Sn) (hereinafter referred to as "tin-based transparent conductive oxide"), and transparent conductive oxides containing zinc (Zn) (hereinafter referred to as "zinc-based transparent conductive oxide").

[0055] Indium-based transparent conductive oxides include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), or fluorine-doped indium oxide (IFO). Tin-based transparent conductive oxides include, for example, tin oxide, antimond-doped tin oxide (ATO), or fluorine-doped tin oxide (FTO). Zinc-based transparent conductive oxides include, for example, zinc oxide, aluminum-doped zinc oxide (AZO), boron-doped zinc oxide, or gallium-doped zinc oxide (GZO).

[0056] In this embodiment, the light-emitting layer 212 is formed on the anode electrode 210 and emits, for example, one of three colors of light: red light (peak wavelength, for example, 580 nm to 640 nm), green light (peak wavelength, for example, 510 nm to 550 nm), or blue light (peak wavelength, for example, 450 nm to 480 nm). Furthermore, in this embodiment, the light-emitting layer 212 may emit light having one of the following colors: magenta, cyan, or yellow. In this embodiment, for example, as shown in Figure 7A, the light-emitting layer 212b of the light-emitting element 110b emits blue light, the light-emitting layer 212g of the light-emitting element 110g emits green light, and the light-emitting layer 212r of the light-emitting element 110r emits red light. The correspondence between each light-emitting element 110, the light-emitting layer 212, and the color filter 230 in this embodiment will be described later.

[0057] Furthermore, in the following description, the light-emitting element 110 according to this embodiment will be described as having a light-emitting layer 212 made of an organic material as the light-emitting part (i.e., the light-emitting element 110 is an OLED), but this embodiment is not limited to this. For example, in this embodiment, the light-emitting element 110 may have a light-emitting layer 212 made of an inorganic material.

[0058] Furthermore, in this embodiment, as shown in Figure 7A, the light-emitting layer 212 is provided individually for each light-emitting element 110, that is, separated. More specifically, the light-emitting layer 212 has a structure in which, for example, a hole injection layer, a hole transport layer, light-emitting layers of each color, and an electron transport layer are sequentially stacked from bottom to top in the figure. Here, each light-emitting layer of each color may be a multilayer structure in which different light-emitting materials that emit light of the same color are stacked, or it may be a multilayer structure in which light-emitting materials that emit light of different colors are stacked.

[0059] The hole-injection layer can be composed of, for example, hexaazatriphenylene (HAT).

[0060] The hole transport layer can be composed of, for example, α-NPD[N,N'-di(1-naphthyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine].

[0061] For example, when an electric field is applied to the red light-emitting layer, some of the holes injected from the anode electrode 210 via the hole injection layer and hole transport layer and some of the electrons injected from the cathode electrode 214 via the electron transport layer recombine to generate red light. The red light-emitting layer includes, for example, at least one of a red light-emitting material, a hole transport material, an electron transport material, and a dual charge transport material. The red light-emitting material may be fluorescent or phosphorescent. Specifically, the red light-emitting layer can be made of, for example, 4,4-bis(2,2-diphenylbinin)biphenyl (DPVBi) mixed with 30% by weight of 2,6-bis[(4'-methoxydiphenylamino)styryl]-1,5-dicyanonaphthalene (BSN).

[0062] The blue light-emitting layer generates blue light when an electric field is applied, as some of the injected holes and some of the injected electrons recombine. The blue light-emitting layer includes, for example, at least one of the following: a blue light-emitting material, a hole-transporting material, an electron-transporting material, and a dual-charge-transporting material. The blue light-emitting material may be fluorescent or phosphorescent. Specifically, the blue light-emitting layer can be composed of, for example, a mixture of DPVBi and 2.5% by weight of 4,4'-bis[2-{4-(N,N-diphenylamino)phenyl}vinyl]biphenyl (DPAVBi).

[0063] The green light-emitting layer generates green light when an electric field is applied, as some of the injected holes and some of the injected electrons recombine. The green light-emitting layer includes, for example, at least one of the following: a green light-emitting material, a hole-transporting material, an electron-transporting material, and a dual-charge-transporting material. The green light-emitting material may be fluorescent or phosphorescent. Specifically, the green light-emitting layer can be composed of, for example, a mixture of DPVBi and 5% by weight of coumarin 6.

[0064] Examples of electron transport layers include BCP (2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline), Alq3 (aluminum quinolinol), and Bphen (basophenanthroline). The electron transport layer consists of at least one layer and may include an electron transport layer doped with an alkali metal or alkaline earth metal.

[0065] An electron transport layer doped with an alkali metal or alkaline earth metal can be constructed by co-depositing, for example, 0.5 to 15% by weight, of an alkali metal such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), or cesium (Cs), or an alkaline earth metal such as magnesium (Mg), calcium (Ca), strontium (Sr), or barium (Ba), as a host material.

[0066] Furthermore, an electron injection layer may be provided between the electron transport layer and the cathode electrode 214. The electron injection layer is for increasing electron injection from the cathode and can be composed of an alkali metal or alkaline earth metal in its elemental form, or a compound containing them, or a mixture containing them. For example, the electron injection layer can be composed of lithium (Li) or lithium fluoride (LiF), etc.

[0067] Furthermore, a buffer layer may be provided between the electron transport layer and the cathode electrode 214. The buffer layer is intended to mitigate process damage during film formation of the cathode electrode 214. The buffer layer may be made of, for example, Mg, magnesium silver alloy (MgAg), Ca, Li, LiF, lithium carbonate (Li ２ CO ３ ), Cs, Cesium carbonate (Cs ２ CO ３ It can be composed of elements of alkali metals or alkaline earth metals, compounds containing them, or mixtures containing them.

[0068] The cathode electrode 214 is provided on the light-emitting layer 212. The cathode electrode 214, like the anode electrode 210, is provided individually for each light-emitting element 110, i.e., separated. When a voltage is applied between the anode electrode 210 and the cathode electrode 214, electrons are injected from the cathode electrode 214 into the light-emitting layer 212.

[0069] The cathode electrode 214 is preferably made of a transparent conductive material that has good light transmittance to visible light (for example, visible light with wavelengths of about 360 nm to 780 nm) and a small work function. For example, the cathode electrode 214 can be formed from a metal film containing at least one of the elements and alloys of metals such as aluminum (Al), magnesium (Mg), calcium (Ca), sodium (Na), and silver (Ag). Specific examples of alloys include aluminum (Al) alloys such as MgAg alloy or AlLi alloy, and silver (Ag) alloys. Furthermore, the cathode electrode 214 may be made from a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), or zinc oxide (ZnO). The cathode electrode 214 may be made of a laminated film of a metal layer and a conductive oxide layer. Furthermore, if the cathode electrode 214 is made of a multilayer film, the metal layer may be provided on the light-emitting layer 212 side, or the transparent conductive oxide layer may be provided on the light-emitting layer 212 side.

[0070] Furthermore, in this embodiment, as shown in Figure 7A, the stacked structure of each light-emitting element 110 is covered with a protective film 220, and a color filter 230, a planarization film 240, and an on-chip lens 250 are provided on the protective film 220.

[0071] The protective film 220 is provided to prevent the light-emitting layer 212 and the like from being damaged during the manufacturing process or contaminated by the external environment. The protective film 220 is preferably formed from, for example, an inorganic material or organic material that has low hygroscopicity and light transmittance to visible light. The protective film 220 may also have a single-layer or multi-layer structure. For example, as an inorganic material, silicon oxide (SiO₂) ｘ ), silicon nitride (SiN ｘ ), silicon oxide nitride (SiO ｘ N ｙ ), titanium oxide (TiO ｘ ) and aluminum oxide (AlO ｘExamples of organic materials include thermosetting resins and photosensitive resins. Photosensitive resins include, for example, UV-curable resins. Specifically, examples of organic materials include acrylic resins, polyimide resins, novolac resins, epoxy resins, norbornene resins, and parylene resins. Furthermore, the protective film 220 may be an ALD (Atomic Layer Deposition) layer to enhance the effect of suppressing moisture penetration.

[0072] The color filter 230 is a filter that transmits light of a specific wavelength component from the light emitted from the light-emitting layer 212 of the corresponding light-emitting element 110. In this embodiment, for example, the color filter 230 may be a color filter 230r that transmits red wavelength components, a color filter 230g that transmits green wavelength components, a color filter 230b that transmits blue wavelength components, a color filter 230y that transmits yellow wavelength components, a color filter 230m that transmits magenta wavelength components, or a color filter 230c that transmits cyan wavelength components. Furthermore, the color filter 230 may be formed from a material in which a pigment or dye is dispersed in a transparent binder such as silicone.

[0073] More specifically, in this embodiment, one display device 10 (or one pixel 20) is provided with two types of color filters 230. More specifically, in this embodiment, for example, as shown in Figure 7A, a color filter 230g (an example of a first color filter) that transmits the wavelength component of green (an example of a first color) is provided as the color filter of the light-emitting element 110g. In addition, a color filter 230m (an example of a second color filter) that transmits the wavelength component of magenta (an example of a second color), which is complementary to green, is provided as the color filter of the light-emitting elements 110b and 110r. Furthermore, in this embodiment, as shown in Figure 7A, a separation layer 232g made of a color filter material that transmits the wavelength component of green is provided at the boundary between the light-emitting element 110b and the light-emitting element 110r, more specifically, between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r.

[0074] Furthermore, in this embodiment, as shown in Figure 7A, the film thickness of the color filters 230g, 230m and the separation layer 232g may be the same. In other words, in this embodiment, the color filters 230g, 230m and the separation layer 232g may be formed so that their upper and lower surfaces are flush. Moreover, in this embodiment, as shown in Figure 7A, the color filters 230g and 230m have a rectangular shape in the cross-section of the pixel 20. However, in this embodiment, the shape is not limited to this, and for example, the color filters 230g and 230m may have a tapered shape that narrows at the bottom or a tapered shape that widens at the bottom in the cross-section of the pixel 20.

[0075] In this embodiment, the color filter layer (a collective term for both the color filter 230 and the separation layer 232) provided on one display device 10 (or one pixel 20) is formed from two types of color filter materials. Therefore, in this embodiment, it is possible to suppress an increase in the manufacturing cost of the display device 10.

[0076] Furthermore, in this embodiment, by providing a separation layer 232g made of a color filter material that transmits green wavelength components between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r, the occurrence of ghosting 320 can be suppressed. Specifically, a portion of the red light emitted from the light-emitting layer 212r of the light-emitting element 110r is absorbed to some extent by the color filter 230m that transmits magenta wavelength components, but it proceeds upward in front of the light-emitting layer 212r and is incident on the on-chip lens 250 of the light-emitting element 110r. Also, even if a portion of the red light emitted from the light-emitting layer 212r of the light-emitting element 110r proceeds diagonally upward from the light-emitting layer 212r, it is blocked by the color filter 230g that transmits green wavelength components and the separation layer 232g, so it does not occur on the on-chip lenses 250 of the light-emitting elements 110b and 110g adjacent to the light-emitting element 110r. As a result, in this embodiment, it is possible to suppress the occurrence of ghosts 320 in image 300.

[0077] Furthermore, in this embodiment, similar to the light-emitting element 110r, a portion of the green light emitted from the light-emitting layer 212g of the light-emitting element 110g passes through the color filter 230g, which transmits the green wavelength component, and travels upward in front of the light-emitting layer 212g before entering the on-chip lens 250 of the light-emitting element 110g. Also, even if a portion of the green light emitted from the light-emitting layer 212g of the light-emitting element 110g travels diagonally upward from the light-emitting layer 212g, it is blocked by the color filter 230m, which transmits the magenta wavelength component, and therefore does not enter the on-chip lenses 250 of the light-emitting elements 110b and 110r adjacent to the light-emitting element 110g.

[0078] Furthermore, in this embodiment, similar to the light-emitting element 110r, a portion of the blue light emitted from the light-emitting layer 212b of the light-emitting element 110b is absorbed to some extent by the color filter 230m, which transmits the magenta wavelength component, but it still travels upward in front of the light-emitting layer 212b and enters the on-chip lens 250 of the light-emitting element 110b. Also, a portion of the green light emitted from the light-emitting layer 212b of the light-emitting element 110b, even if it travels diagonally upward from the light-emitting layer 212b, is blocked by the color filter 230g and separation layer 232g, which transmit the green wavelength component, and therefore does not enter the on-chip lens 250 of the light-emitting elements 110g and 110r adjacent to the light-emitting element 110b.

[0079] Therefore, according to this embodiment, it is possible to suppress the occurrence of ghosts 320 in the image 300.

[0080] Furthermore, according to this embodiment, the magenta color filter 230m, which is the complementary color, has a low concentration of pigment, resulting in high adhesion to the protective film 220. The cyan and yellow color filters 230c and 230y also have similar properties to the magenta color filter 230m.

[0081] The planarization film 240 can be formed from, for example, inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride, or organic resin materials such as acrylic resins or polyimide resins. The planarization film 240 may also be a single layer or a multilayer film of the above-mentioned material.

[0082] The on-chip lens 250 can emit light from the light-emitting layer 212 as collimated light, either directly above or diagonally above the light-emitting element 110. The on-chip lens 250 can be formed from, for example, a styrene resin, an acrylic resin, a styrene-acrylic copolymer resin, or a siloxane resin.

[0083] Furthermore, in this embodiment, as shown in Figure 7A, the display device 10 is sealed by providing a counter substrate 270 on the on-chip lens 250 via a sealing film 260.

[0084] The sealing film 260 is provided to prevent the light-emitting layer 212 and other components from being damaged during the manufacturing process or contaminated by the external environment. Preferably, the sealing film 260 is formed from an organic material that has low hygroscopicity and light transmittance to visible light. The sealing film 260 may have a single-layer structure or a multi-layer structure. Examples of organic materials include thermosetting resins and photosensitive resins. Photosensitive resins include, for example, UV-curable resins. Specifically, examples of organic materials include acrylic resins, polyimide resins, novolac resins, and epoxy resins.

[0085] The opposing substrate 270 is a light-transmitting substrate that transmits light, and is made of, for example, a glass substrate or a transparent resin substrate (polyethylene terephthalate, acrylic resin, polycarbonate, polyolefin, etc.).

[0086] Next, an example of the planar configuration of the pixel 20 will be described with reference to Figure 7B. In this embodiment, for example, as shown in Figure 7B, the planar shape of the light-emitting element 110 may be hexagonal (an example of a polygonal shape). Furthermore, the multiple light-emitting elements 110 may be arranged in a delta array (each light-emitting element 110 is positioned at the vertices of a triangle) as shown in Figure 7B. Furthermore, in this embodiment, a separation layer 232g made of a color filter material having green color is provided between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r. In this embodiment, the multiple separation layers 232g and color filters 230g are formed of a color filter material that transmits the same green wavelength, but are separated from each other.

[0087] In this embodiment, the planar shape of the light-emitting element 110 may be square (an example of a rectangular shape). In this case, the multiple light-emitting elements 110 may be arranged in a square arrangement (each light-emitting element 110 is placed at the vertices of a square). Furthermore, in this embodiment, the planar shape of the light-emitting element 110 may be rectangular (an example of a rectangular shape). In this case, the multiple light-emitting elements 110 may be arranged in a stripe pattern, for example.

[0088] Furthermore, in this embodiment, the planar shape of the light-emitting element 110 may be, for example, a polygon, a circle, or an ellipse. Also, in this embodiment, for example, the size and shape of the light-emitting element 110 may differ in the plane for each color of light corresponding to the light-emitting element 110.

[0089] As described above, in this embodiment, the color filter layer (a collective term for both the color filter 230 and the separation layer 232) provided on one display device 10 (or one pixel 20) is formed from two types of color filter materials. Therefore, in this embodiment, it is possible to suppress an increase in the manufacturing cost of the display device 10.

[0090] Furthermore, in this embodiment, by providing a separation layer 232g made of a color filter material that transmits green wavelength components between the color filter 230m of the light-emitting element 110b and the color filter 230 of the light-emitting element 110r, the occurrence of ghosting 320 can be suppressed. Specifically, for example, red light emitted from the light-emitting layer 212r of the light-emitting element 110r is blocked by the color filter 230g that transmits green wavelength components and the separation layer 232g, even if it travels diagonally upward from the light-emitting layer 212r, and therefore does not enter the on-chip lenses 250 of the light-emitting elements 110b and 110g adjacent to the light-emitting element 110r. As a result, according to this embodiment, the occurrence of ghosting 320 in the image 300 can be suppressed.

[0091] In other words, according to this embodiment, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0092] In this embodiment, the pixel 20 is not limited to the form shown in Figures 7A and 7B, but can be transformed into various forms.

[0093] <3.2 Detailed Configuration> (Detailed Configuration Example 1) Next, the detailed configuration of the pixel 20 according to Detailed Configuration Example 1 of this embodiment will be described with reference to Figures 8A and 8B. Figures 8A and 8B are cross-sectional views illustrating an example of the configuration of the pixel 20 according to Detailed Configuration Example 1 of this embodiment, and more specifically, they correspond to the cross-section when the pixel 20 is cut along the film thickness direction of the substrate 200.

[0094] In the example shown in Figure 7A described earlier, a color filter 230g that transmits the green wavelength component was provided as the color filter for the light-emitting element 110g. Also in the example shown in Figure 7A, a color filter 230m that transmits the magenta wavelength component, which is complementary to green, was provided as the color filter for the light-emitting elements 110b and 110r. Furthermore, in the example shown in Figure 7A, a separation layer 232g made of a color filter material that transmits the green wavelength component was provided between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r. However, this embodiment is not limited to the example shown in Figure 7A. Therefore, in the detailed configuration example 1 below, other combination examples focusing on the correspondence between the light-emitting element 110 and the color filter 230 will be described with reference to Figures 8A and 8B. In detailed configuration example 1, the light-emitting layer 212b of the light-emitting element 110b emits blue light, the light-emitting layer 212g of the light-emitting element 110g emits green light, and the light-emitting layer 212r of the light-emitting element 110r emits red light.

[0095] In the example shown in Figure 8A, a color filter 230b (an example of a first color filter) that transmits the wavelength component of blue (an example of a first color) is provided as the color filter of the light-emitting element 110b. In addition, in the example shown in Figure 8A, a color filter 230y (an example of a second color filter) that transmits the wavelength component of yellow (an example of a second color), which is complementary to blue, is provided as the color filter of the light-emitting elements 110g and 110r. Furthermore, in the example shown in Figure 8A, a separation layer 232b made of a color filter material that transmits the wavelength component of blue is provided between the color filter 230y of the light-emitting element 110g and the color filter 230y of the light-emitting element 110r.

[0096] Furthermore, in the example shown in Figure 8B, a color filter 230r (an example of a first color filter) that transmits the wavelength component of red (an example of a first color) is provided as a color filter for the light-emitting element 110r. Also in the example shown in Figure 8B, a color filter 230c (an example of a second color filter) that transmits the wavelength component of cyan (an example of a second color), which is complementary to red, is provided as a color filter for the light-emitting elements 110b and 110g. Moreover, in the example shown in Figure 8B, a separation layer 232r made of a color filter material that transmits the wavelength component of red is provided between the color filter 230c of the light-emitting element 110b and the color filter 230c of the light-emitting element 110g.

[0097] In the detailed configuration example 1 described above, as in this embodiment, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0098] (Detailed Configuration Example 2) Next, with reference to Figures 9A to 9C, the detailed configuration of the pixel 20 according to Detailed Configuration Example 2 of this embodiment will be described. Figures 9A to 9C are cross-sectional views illustrating an example of the configuration of the pixel 20 according to Detailed Configuration Example 2 of this embodiment, and more specifically, they correspond to the cross-section when the pixel 20 is cut along the film thickness direction of the substrate 200.

[0099] In the detailed configuration example 1 described above, each light-emitting element 110b, 110g, and 110r had light-emitting layers 212b, 212g, and 212r that emitted light of different colors. On the other hand, in detailed configuration example 2, two of the three light-emitting elements 110b, 110g, and 110r have light-emitting layers 212 that emit light of the same color. Furthermore, in detailed configuration example 2, the remaining light-emitting element 110 has a light-emitting layer 212 that emits light of a different color from the light-emitting layer 212 described above. In other words, in detailed configuration example 2, two of the three light-emitting elements 110b, 110g, and 110r are provided with a common light-emitting layer 212 that emits light of the same color, while the remaining light-emitting element 110 is provided with a light-emitting layer 212 that emits light of a different color. Therefore, in the detailed configuration example 2, since there are two types of light-emitting layers 212 provided on one display device 10 (or one pixel 20), the increase in the manufacturing cost of the display device 10 can be further suppressed.

[0100] Specifically, in the example shown in Figure 9A, the light-emitting layer 212b of the light-emitting element 110b (an example of a second light-emitting element) emits blue light (an example of a third color). Also in the example shown in Figure 9A, the light-emitting layers 212y of the light-emitting element 110g (an example of a first light-emitting element) and the light-emitting element 110r (an example of a third light-emitting element) emit yellow light (an example of a fourth color). Furthermore, in the example shown in Figure 9A, a color filter 230g that transmits the wavelength component of green (an example of a first color) is provided as a color filter for the light-emitting element 110g. And in the example shown in Figure 9A, a color filter 230m (an example of a second color filter) that transmits the wavelength component of magenta (an example of a second color), which is complementary to green, is provided as a color filter for the light-emitting elements 110b and 110r. Furthermore, in the example shown in Figure 9A, a separation layer 232g made of a color filter material that transmits green wavelength components is provided between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r.

[0101] Thus, in Detailed Configuration Example 2 as well, the color filter layer (a collective term for both the color filter 230 and the separation layer 232) provided on one display device 10 (or one pixel 20) is formed from two types of color filter materials. Therefore, even in Detailed Configuration Example 2, it is possible to suppress an increase in the manufacturing cost of the display device 10.

[0102] Furthermore, in detailed configuration example 2, by providing a separation layer 232g made of a color filter material that transmits the green wavelength component between the color filter 230m of the light-emitting element 110b and the color filter 230 of the light-emitting element 110r, the occurrence of ghosting 320 can be suppressed. Specifically, a portion of the yellow light emitted from the light-emitting layer 212y of the light-emitting element 110r is transmitted as red light by the color filter 230m that transmits the magenta wavelength component and travels upward in front of the light-emitting layer 212y, and is incident on the on-chip lens 250 of the light-emitting element 110r. Also, even if a portion of the yellow light emitted from the light-emitting layer 212y of the light-emitting element 110r travels diagonally upward from the light-emitting layer 212y, it is blocked by the color filter 230g that transmits the green wavelength component and the separation layer 232g, so that it is not incident on the on-chip lenses 250 of the light-emitting elements 110b and 110g adjacent to the light-emitting element 110r. As a result, in detailed configuration example 2, the occurrence of ghosting 320 in image 300 can be suppressed.

[0103] Furthermore, in detailed configuration example 2, similar to the light-emitting element 110r, a portion of the yellow light emitted from the light-emitting layer 212y of the light-emitting element 110g is blocked by the color filter 230g, which transmits the green wavelength component, and travels upward in front of the light-emitting layer 212y as green light, before entering the on-chip lens 250 of the light-emitting element 110g. Also, even if a portion of the yellow light emitted from the light-emitting layer 212y of the light-emitting element 110g travels diagonally upward from the light-emitting layer 212y, it is blocked by the color filter 230m, which transmits the magenta wavelength component, and therefore does not enter the on-chip lenses 250 of the light-emitting elements 110b and 110r adjacent to the light-emitting element 110g. Furthermore, in detailed configuration example 2, similar to the light-emitting element 110r, a portion of the blue light emitted from the light-emitting layer 212b of the light-emitting element 110b is transmitted as blue light by the color filter 230m, which transmits the magenta wavelength component, and travels upward in front of the light-emitting layer 212b before entering the on-chip lens 250 of the light-emitting element 110b. Also, even if a portion of the blue light emitted from the light-emitting layer 212b of the light-emitting element 110b travels diagonally upward from the light-emitting layer 212b, it is blocked by the color filter 230g and separation layer 232g, which transmit the green wavelength component, and therefore does not enter the on-chip lens 250 of the light-emitting elements 110g and 110r adjacent to the light-emitting element 110b. As a result, according to detailed configuration example 2, the occurrence of ghosting 320 in the image 300 can be suppressed.

[0104] In other words, in the detailed configuration example 2 described above, as in this embodiment, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0105] Furthermore, the detailed configuration example 2 is not limited to the example shown in Figure 9A. Therefore, other combination examples focusing on the correspondence between the light-emitting element 110, the light-emitting layer 212, and the color filter 230 will be described below with reference to Figures 9B and 9C.

[0106] Specifically, in the example shown in Figure 9B, the light-emitting layer 212r of the light-emitting element 110r (an example of a second light-emitting element) emits red light (an example of a third color). Also in the example shown in Figure 9B, the light-emitting layers 212c of the light-emitting elements 110b (an example of a first light-emitting element) and 110g (an example of a third light-emitting element) emit cyan light (an example of a fourth color). Furthermore, in the example shown in Figure 9B, a color filter 230b that transmits the wavelength component of blue (an example of a first color) is provided as a color filter for the light-emitting element 110b. And in the example shown in Figure 9B, a color filter 230y (an example of a second color filter) that transmits the wavelength component of yellow (an example of a second color), which is complementary to blue, is provided as a color filter for the light-emitting elements 110r and 110g. Furthermore, in the example shown in Figure 9B, a separation layer 232b made of a color filter material that transmits blue wavelength components is provided between the color filter 230y of the light-emitting element 110r and the color filter 230y of the light-emitting element 110g.

[0107] Furthermore, in the example shown in Figure 9C, the light-emitting layer 212g of the light-emitting element 110g (an example of a second light-emitting element) emits green light (an example of a third color). Also in the example shown in Figure 9C, the light-emitting layers 212m of the light-emitting element 110r (an example of a first light-emitting element) and the light-emitting element 110b (an example of a third light-emitting element) emit magenta light (an example of a fourth color). Moreover, in the example shown in Figure 9C, a color filter 230r that transmits the wavelength component of red (an example of a first color) is provided as a color filter for the light-emitting element 110r. And in the example shown in Figure 9C, a color filter 230c (an example of a second color filter) that transmits the wavelength component of cyan (an example of a second color), which is complementary to red, is provided as a color filter for the light-emitting elements 110b and 110g. Furthermore, in the example shown in Figure 9C, a separation layer 232r made of a color filter material having red color that transmits red wavelength components is provided between the color filter 230c of the light-emitting element 110b and the color filter 230c of the light-emitting element 110g.

[0108] In the detailed configuration example 2 shown in Figures 9B and 9C, as in this embodiment, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0109] <3.3 Manufacturing Method> Next, the manufacturing method of the pixel 20 (display device 10) according to this embodiment will be described with reference to Figures 10A and 10B. Figures 10A and 10B are diagrams for explaining the manufacturing method of the pixel 20 according to this embodiment. In detail, Figure 10A shows the cross-section (upper part in the figure) and the plan view (lower part in the figure) of the pixel 20 at each step, and Figure 10B shows the cross-section of the pixel 20 at each step.

[0110] In this embodiment, a mask deposition process is used to sequentially fabricate a stacked structure of light-emitting elements 110b, 110g, and 110r, each having red, green, and blue light-emitting layers 212b, 212g, and 212r that are separated from each other, by applying red, green, and blue (RGB color separation). Furthermore, a protective film 220 is deposited over the entire surface of the substrate 200 by, for example, CVD (Chemical Vapor Deposition). In this way, the form shown on the left side of Figure 10A can be obtained.

[0111] Next, as shown in the center of Figure 10A, a color filter 230m that transmits magenta wavelength components is formed above the stacked structure of the light-emitting elements 110b and 110r. The color filters 230c, 230m, and 230y that transmit cyan, magenta, and yellow wavelength components have a low pigment concentration and therefore have high adhesion to the protective film 220. For this reason, in this embodiment, it is preferable to form the color filters 230c, 230m, and 230y that transmit cyan, magenta, and yellow wavelength components before the color filters 230b, 230g, and 230r that transmit blue, green, and red wavelength components.

[0112] Then, as shown on the right side of Figure 10A, a color filter 230g that transmits green wavelength components is formed on the laminated structure of the light-emitting element 110g. At this time, by embedding a color filter material that transmits green wavelength components between the previously formed magenta-colored color filters 230m, a separation layer 232g that transmits green wavelength components can be formed. In this embodiment, since the separation layer 232g can be formed by embedding the green color filter material between the color filters 230m, it is possible to easily form a separation layer 232g with a narrow width (width in the plane direction of the substrate 200).

[0113] Next, as shown on the left side of Figure 10B, a planarization film 240 is formed on the color filter 230. Furthermore, as shown on the right side of Figure 10B, an on-chip lens 250 is formed on the planarization film 240.

[0114] Furthermore, the pixels 20 (display device 10) according to this embodiment can be manufactured using methods, apparatus, and conditions commonly used in the manufacture of semiconductor devices. In other words, the pixels 20 (display device 10) according to this embodiment can be manufactured using existing semiconductor device manufacturing methods.

[0115] Examples of the methods mentioned above include the PVD (Physical Vapor Deposition) method, the CVD (Chemical Vapor Deposition) method, and the ALD (Atomic Layer Deposition) method. Examples of PVD methods include vacuum deposition, electron beam (EB) deposition, various sputtering methods (magnetron sputtering, RF (Radio Frequency)-DC (Direct Current) coupled bias sputtering, ECR (Electron Cyclotron Resonance) sputtering, counter-target sputtering, high-frequency sputtering, etc.), ion plating, laser ablation, molecular beam epitaxy (MBE (Molecular Beam Epitaxy)), and laser transfer. Examples of CVD methods include plasma CVD, thermal CVD, metal-organic (MO) CVD, and optical CVD. Furthermore, other methods include electrolytic plating, electroless plating, spin coating, immersion, casting, microcontact printing, drop casting, various printing methods such as screen printing, inkjet printing, offset printing, gravure printing, and flexographic printing, as well as stamping, spraying, air doctor coater, blade coater, rod coater, knife coater, squeeze coater, reverse roll coater, transfer roll coater, gravure coater, kiss coater, cast coater, spray coater, slit orifice coater, and calender coater. In addition, patterning methods include chemical etching such as shadow masks, laser transfer, and photolithography, as well as physical etching using ultraviolet light or lasers. Furthermore, planarization techniques include CMP (Chemical Mechanical Polishing), laser planarization, and reflow.

[0116] Furthermore, this embodiment is not limited to the manufacturing method shown in Figures 10A and 10B.

[0117] <<4. Second Embodiment>> Next, with reference to Figure 11, the detailed configuration of the pixel 20 according to the second embodiment of the present disclosure will be described. Figure 11 is a plan view illustrating an example of the configuration of the pixel 20 according to this embodiment, and in detail corresponds to the plane when the color filter 230 of the pixel 20 is cut along the plane direction of the substrate 200.

[0118] In the first embodiment described with reference to Figure 7B, the planar shape of the light-emitting element 110 was hexagonal, and the multiple light-emitting elements 110 were arranged in a delta configuration. Furthermore, in the first embodiment, a separation layer 232g made of a color filter material that transmits green wavelength components was provided between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r. In the first embodiment, the multiple separation layers 232g and color filters 230g were formed of the same color filter material that transmits green wavelengths, but were separated from each other.

[0119] In this embodiment, as shown in Figure 11, the planar shape of the light-emitting element 110 is hexagonal, similar to the first embodiment, and the multiple light-emitting elements 110 are arranged in a delta configuration. Furthermore, in this embodiment, similar to the first embodiment, a separation layer 232g made of a color filter material that transmits green wavelengths is provided between the color filter 230m of the light-emitting element 110b and the color filter 230m of the light-emitting element 110r. On the other hand, in this embodiment, unlike the first embodiment, the multiple separation layers 232g and color filters 230g may be formed of the same color filter material that transmits green wavelengths and may be connected to each other. That is, in this embodiment, the planar shape of the separation layer 232g surrounding the color filter 230m is different from that of the first embodiment.

[0120] In this embodiment, by changing the planar shape of the separation layer 232g, the spread of light emitted from the light-emitting layer 212 located below the color filter 230m can be suitably controlled. Therefore, according to this embodiment, the viewing angle of the display device 10 can be suitably controlled. Furthermore, in this embodiment as in the first embodiment, the occurrence of ghosting 320 can be suppressed while avoiding an increase in the manufacturing cost of the display device 10.

[0121] In this embodiment, the pixel 20 is not limited to the form shown in Figure 11, but can be transformed into various forms.

[0122] <<5. Third Embodiment>> Next, the detailed configuration of the pixel 20 according to the third embodiment of the present disclosure will be described with reference to Figures 12A to 12E. Figures 12A to 12E are cross-sectional views illustrating an example of the configuration of the pixel 20 according to this embodiment, and more specifically, correspond to the cross-section when the pixel 20 is cut along the film thickness direction of the substrate 200.

[0123] Furthermore, in the first embodiment described with reference to Figure 7A, the film thickness of the color filters 230g, 230m and the separation layer 232g is the same. In other words, in the first embodiment, the color filters 230g, 230m and the separation layer 232g were formed so that their upper and lower surfaces were flush. However, in this embodiment, the color filters 230g, 230m and the separation layer 232g are not limited to the above-described configuration.

[0124] In this embodiment, for example, as shown in Figure 12A, the film thickness of the color filter 230m (an example of a second color filter) may be thinner than the film thickness of the color filter 230g (an example of a first color filter) and the separation layer 232g. Also, in this embodiment, the color filter 230g and the separation layer 232g may be stretched to cover a portion of the upper surface of the color filter 230m, as shown in Figure 12A.

[0125] In the example shown in Figure 12A, the extended portions of the color filter 230g and the separation layer 232g effectively block the light, thereby suppressing the spread of light emitted from the light-emitting layer 212 located below the color filter 230m. Therefore, according to the example shown in Figure 12A, the viewing angle of the display device 10 can be suitably controlled. Furthermore, because the color filter 230m, which transmits magenta wavelengths, has a low concentration of pigment, it adheres well to the protective film 220. Therefore, even if the color filter 230m is made thinner, it does not easily peel off the protective film 220.

[0126] Furthermore, in this embodiment, for example, as shown in Figure 12B, the film thickness of the color filter 230m (an example of a second color filter) may be thicker than the film thickness of the color filter 230g (an example of a first color filter) 230g and the separation layer 232g. Also, in this embodiment, as shown in Figure 12B, the color filter 230m may be stretched to cover a portion of the upper surface of the color filter 230g and the separation layer 232g.

[0127] In the example shown in Figure 12B, the extended portion of the color filter 230m allows light to be effectively transmitted, thereby controlling the spread of light emitted from the light-emitting layer 212 located below the color filter 230m. Therefore, according to the example shown in Figure 12B, the viewing angle of the display device 10 can be suitably controlled.

[0128] Furthermore, in this embodiment, for example, as shown in Figure 12C, the film thickness of the color filter 230m may be thinner than that of the color filter 230g and the separation layer 232g. Also, in this embodiment, as shown in Figure 12C, the width of the separation layer 232g may be increased, and the color filter 230g and the separation layer 232g do not need to be stretched to cover a portion of the upper surface of the color filter 230m.

[0129] In the example shown in Figure 12C, the extended portion of the wide separation layer 232g effectively blocks light, thereby suppressing the spread of light emitted from the light-emitting layer 212 located below the color filter 230m. Therefore, according to the example shown in Figure 12B, the viewing angle of the display device 10 can be suitably controlled.

[0130] Furthermore, in this embodiment, for example, as shown in Figures 12D and 12E, the separation layer 232g may be provided at the boundary of each light-emitting element 110. In this case, the position of the separation layer 232g may be on the lower side of the color filter 230m, as shown in Figure 12D, or on the upper side of the color filter 230m, as shown in Figure 12E.

[0131] In the examples shown in Figures 12D and 12E, the separation layer 232g effectively blocks the light, thereby suppressing the spread of light emitted from the light-emitting layer 212 located below the color filter 230m. Therefore, in the examples shown in Figures 12D and 12E, the viewing angle of the display device 10 can be suitably controlled.

[0132] In other words, according to this embodiment shown in Figures 12A to 12E, the spread of light emitted from the light-emitting layer 212 can be controlled by changing the cross-sectional shape of the color filters 230g, 230m and the separation layer 232. Therefore, according to this embodiment, the viewing angle of the display device 10 can be suitably controlled. Furthermore, in this embodiment as in the first embodiment, the occurrence of ghosting 320 can be suppressed while avoiding an increase in the manufacturing cost of the display device 10.

[0133] In this embodiment, the pixel 20 is not limited to the form shown in Figures 12A to 12E, but can be transformed into various forms.

[0134] <<6. Fourth Embodiment>> Next, the detailed configuration of the pixel 20 according to the fourth embodiment of the present disclosure will be described with reference to Figures 13A to 13C. Figures 13A to 13C are cross-sectional views illustrating an example of the configuration of the pixel 20 according to this embodiment, and more specifically, correspond to the cross-section when the pixel 20 is cut along the film thickness direction of the substrate 200.

[0135] In this embodiment, the positions of the center of the light-emitting layer 212, the center of the color filter 230, and the center of the on-chip lens 250 are not limited to being the same. In this embodiment, for example, as shown in Figure 13A, the positions of the center of the light-emitting layer 212, the center of the color filter 230, and the center of the on-chip lens 250 may be different. Also, in this embodiment, the amount of misalignment (positional misalignment in the planar direction of the substrate 200) between the center of the light-emitting layer 212, the center of the color filter 230, and the center of the on-chip lens 250 may differ, for example, depending on the position of the light-emitting element 110 in the display area (pixel array portion) of the display device 10. Specifically, for example, the amount of misalignment may be larger for light-emitting elements 110 located closer to the outer edge of the display area. In this embodiment, by not aligning the positions of the center of the light-emitting layer 212, the center of the color filter 230, and the center of the on-chip lens 250, the light emitted from the light-emitting layer 212 of the light-emitting element 110 can be suitably guided diagonally upward from the light-emitting layer 212. Therefore, according to this embodiment, the viewing angle of the display device 10 can be controlled. Details of such variations of positional misalignment will be described later.

[0136] Furthermore, in this embodiment, as shown in Figure 13B, the intensity of the light may be increased by resonating the light emitted from the light-emitting layer 212 between the anode electrode 210 and the cathode electrode 214. In this embodiment, for example, the distance between the anode electrode 210 and the cathode electrode 214 is determined according to the wavelength of the light from the light-emitting layer 212 to achieve light resonance. Therefore, in such a case, the distance between the anode electrode 210 and the cathode electrode 214 will be different for light-emitting elements 110b, 110g, and 110r, which have light-emitting layers 212b, 212g, and 212r that emit light of different colors. This type of resonant structure is also called a microcavity structure. Details of variations of this microcavity structure will be described later.

[0137] Furthermore, in this embodiment, as shown in Figure 13C, the opposing substrate 270 may not be provided. By doing so, in this embodiment, the light from the light-emitting layer 212 is not refracted at the interface between the opposing substrate 270 and the air. As a result, according to this embodiment, the occurrence of ghosts (virtual images) 320 at a position far from the real image 310 in the image 300 is suppressed.

[0138] Furthermore, in this embodiment, as shown in Figures 13A to 13C, similar to the first embodiment, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0139] In this embodiment, the pixel 20 is not limited to the form shown in Figures 12A to 12E, but can be transformed into various forms.

[0140] <<7. Summary>> As described above, according to each embodiment of the present disclosure, it is possible to suppress the occurrence of ghosts 320 while avoiding an increase in the manufacturing cost of the display device 10.

[0141] Furthermore, in each embodiment of this disclosure, the positions of each light-emitting element 110b, 110g, and 110r are not limited to the above description or figures, and can be interchanged with each other.

[0142] Furthermore, each embodiment of this disclosure is not limited to the form shown in the figures, but can be modified in various ways and can also be combined with one another.

[0143] Furthermore, the display device 10 according to the embodiment of this disclosure can be applied to, for example, display devices for VR (Virtual Reality), MR (Mixed Reality), or AR (Augmented Reality), display devices for smartphones, television equipment, electronic viewfinders (EVF), or small projectors. The display device 10 can also be applied to various lighting devices (light-emitting devices).

[0144] <<8. Modifications>> <8.1 Modification 1> Next, as a modification of the embodiment of the present disclosure, a modification of the relationship between the normal LN passing through the center of the light-emitting portion of the subpixel 100 (more specifically, the light-emitting layer 212 of a plurality of light-emitting elements 110 included in one subpixel 100), the normal LN' passing through the center of the lens member (more specifically, the on-chip lens 250), and the normal LN" passing through the center of the wavelength selection portion (more specifically, the color filter 230) will be described with reference to Figures 14A to 14G. Figures 14A to 14G are conceptual diagrams for explaining the relationship between the normal LN passing through the center of the light-emitting portion, the normal LN' passing through the center of the lens member, and the normal LN" passing through the center of the wavelength selection portion. In the following description, the center of the subpixel 100 (more specifically, the light-emitting element 110) will be referred to as the center of the light-emitting portion.

[0145] In embodiments of this disclosure, the size of the wavelength selection area may be appropriately changed in response to the light emitted by the subpixel 100. Furthermore, if a light absorption layer (black matrix layer) is provided between the wavelength selection areas of adjacent subpixels 100, the size of the light absorption layer (black matrix layer) may be appropriately changed in response to the light emitted by the subpixel 100. In addition, the size of the wavelength selection area may be determined by the distance (offset amount) d between the normal vector passing through the center of the subpixel 100 and the normal vector passing through the center of the color filter. ０ Depending on the circumstances, it may be changed as appropriate. The planar shape of the wavelength selection section may be the same as, similar to, or different from, the planar shape of the lens component (e.g., on-chip lens).

[0146] For example, as shown in Figure 14A, the normal vector LN passing through the center of the light-emitting part, the normal vector LN'' passing through the center of the wavelength selection part, and the normal vector LN' passing through the center of the lens member may be made to coincide. In other words, the distance (offset amount) D between the normal vector passing through the center of the light-emitting part and the normal vector passing through the center of the lens member. ０ The distance (offset amount) d between the normal vector passing through the center of the light-emitting part and the normal vector passing through the center of the wavelength-selecting part. ０ This is equivalent to 0 (zero).

[0147] Furthermore, for example, as shown in Figure 14B, the normal vector LN passing through the center of the light-emitting part and the normal vector LN'' passing through the center of the wavelength-selecting part coincide, but the normal vector LN passing through the center of the light-emitting part and the normal vector LN'' passing through the center of the wavelength-selecting part do not have to coincide with the normal vector LN' passing through the center of the lens member. In other words, D ０ ≠d ０ It may also be equal to 0.

[0148] Furthermore, for example, as shown in Figure 14C, the normal vector LN passing through the center of the light-emitting part, the normal vector LN'' passing through the center of the wavelength-selecting part, and the normal vector LN' passing through the center of the lens member do not coincide, but the normal vector LN'' passing through the center of the wavelength-selecting part and the normal vector LN' passing through the center of the lens member may coincide. In other words, D ０ = d ０ It can also be 0.

[0149] Furthermore, as shown in Figure 14D, for example, the normal vector LN passing through the center of the light-emitting part, the normal vector LN'' passing through the center of the wavelength-selecting part, and the normal vector LN' passing through the center of the lens member do not coincide, and the normal vector LN' passing through the center of the lens member does not coincide with the normal vector LN passing through the center of the surface of the light-emitting part and the normal vector LN'' passing through the center of the wavelength-selecting part. Here, it is preferable that the center of the wavelength-selecting part (shown as a black circle in Figure 14D) is located on a straight line LL connecting the center of the surface of the light-emitting part and the center of the lens member (shown as a black circle in Figure 14D). Specifically, the distance from the center of the surface of the light-emitting part in the thickness direction to the center of the wavelength-selecting part is LL. １ The distance from the center of the wavelength selection area in the thickness direction to the center of the lens material is LL ２ In that case, D ０ >d ０ > 0, and considering manufacturing variations, d ０ : D ０ =LL １ : (LL １ +LL ２ It is preferable that the following conditions be satisfied.

[0150] Furthermore, the stacking relationship between the wavelength selection unit and the lens member may be reversed. In such a case, for example, as shown in Figure 14E, the normal vector LN passing through the center of the light-emitting unit, the normal vector LN'' passing through the center of the wavelength selection unit, and the normal vector LN' passing through the center of the lens member may be made to coincide. In other words, D ０ = d ０ It may also be equal to 0.

[0151] Furthermore, for example, as shown in Figure 14F, the normal vector LN passing through the center of the light-emitting part, the normal vector LN'' passing through the center of the wavelength-selecting part, and the normal vector LN' passing through the center of the lens member do not coincide, but the normal vector LN'' passing through the center of the wavelength-selecting part and the normal vector LN' passing through the center of the lens member may coincide. In other words, D ０ = d ０ It can also be 0.

[0152] Furthermore, as shown in the conceptual diagram Figure 14G, the normal vector LN passing through the center of the surface of the light-emitting part, the normal vector LN'' passing through the center of the wavelength-selecting part, and the normal vector LN' passing through the center of the lens member do not coincide, and the normal vector LN' passing through the center of the lens member does not coincide with the normal vector LN passing through the center of the surface of the light-emitting part and the normal vector LN'' passing through the center of the wavelength-selecting part. Here, it is preferable that the center of the wavelength-selecting part is located on the straight line LL connecting the center of the surface of the light-emitting part and the center of the lens member. Specifically, the distance from the center of the surface of the light-emitting part in the thickness direction to the center of the wavelength-selecting part (shown as a black circle in Figure 14G) is LL. １ The distance from the center of the wavelength selection area in the thickness direction to the center of the lens member (shown as a black circle in Figure 14G) is LL ２ When that happens, d ０ >D ０ > 0, and considering manufacturing variations, D ０ :d ０ =LL ２ : (LL １ +LL ２ It is preferable that the following conditions be satisfied.

[0153] <8.2 Modification 2> The subpixel 1100 (more specifically, the light-emitting element 110) used in the display device according to the embodiment of the present disclosure described above may be configured to have a resonator structure that resonates the light generated in the light-emitting section (more specifically, the light-emitting layer 212). The resonator structure will be described below with reference to Figures 15 to 21. Figure 15 is a schematic cross-sectional view illustrating a first example of the resonator structure, Figure 16 is a schematic cross-sectional view illustrating a second example of the resonator structure, and Figure 17 is a schematic cross-sectional view illustrating a third example of the resonator structure. Furthermore, Figure 18 is a schematic cross-sectional view illustrating a fourth example of the resonator structure, and Figure 19 is a schematic cross-sectional view illustrating a fifth example of the resonator structure. Furthermore, Figure 20 is a schematic cross-sectional view illustrating a sixth example of the resonator structure, and Figure 21 is a schematic cross-sectional view illustrating a seventh example of the resonator structure.

[0154] (Resonator Structure: First Example) Figure 15 is a schematic cross-sectional view illustrating the first example of a resonator structure. In the first example, the first electrode (e.g., anode electrode 210) 1202 is formed with a common film thickness in each subpixel 1100. The same applies to the second electrode (e.g., cathode electrode 214) 1206.

[0155] As shown in Figure 15, a reflector 1401 is positioned below the first electrode 1202 of the subpixel 1100, with an optical adjustment layer 1402 in between. A resonator structure is formed between the reflector 1401 and the second electrode 1206, causing the light generated by the organic layer (specifically, the light-emitting layer 212) 1204 to resonate.

[0156] The reflector 1401 is formed with a common film thickness for each subpixel 1100. The film thickness of the optical adjustment layer 1402 differs depending on the color that the subpixel 1100 is to display. By having optical adjustment layers 1402R, 1402G, and 1402B with different film thicknesses, it is possible to set the optical distance that produces the optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0157] In the example shown in Figure 15, the upper surfaces of the reflectors 1401 for subpixels 1100R, 1100G, and 1100B are aligned. As described above, the thickness of the optical adjustment layer 1402 differs depending on the color that the subpixel 1100 should display, so the position of the upper surface of the second electrode 1206 differs depending on the type of subpixel 1100R, 1100G, and 1100B.

[0158] The reflector 1401 can be formed using, for example, a metal such as aluminum (Al), silver (Ag), or copper (Cu), or an alloy mainly composed of these metals.

[0159] The optical adjustment layer 1402 is made of silicon nitride (SiN ｘ ), silicon oxide (SiO ｘ ), silicon oxynitride (SiO ｘ N ｙ It can be constructed using inorganic insulating materials such as ) or organic resin materials such as acrylic resins or polyimide resins. The optical adjustment layer 1402 may be a single layer or a laminated film of multiple materials. Also, the number of layers may differ depending on the type of subpixel 1100.

[0160] The first electrode 1202 can be formed using a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), or zinc oxide (ZnO).

[0161] The second electrode 1206 preferably functions as a semi-transparent reflective film. The second electrode 1206 can be formed using magnesium (Mg), silver (Ag), or a magnesium-silver alloy (MgAg) mainly composed of these, or an alloy containing alkali metals or alkaline earth metals.

[0162] (Resonator structure: Second example) Figure 16 is a schematic cross-sectional view illustrating a second example of the resonator structure. In this second example as well, the first electrode 1202 and the second electrode 1206 are formed with a common film thickness in each subpixel 1100.

[0163] In the second example as well, a reflector 1401 is placed beneath the first electrode 1202 of the subpixel 1100, with an optical adjustment layer 1402 in between. A resonator structure is formed between the reflector 1401 and the second electrode 1206 to resonate the light generated by the organic layer 1204. Similar to the first example, the reflector 1401 is formed with a common film thickness for each subpixel 1100, while the film thickness of the optical adjustment layer 1402 differs according to the color that the subpixel 1100 should display.

[0164] In the first example shown in Figure 15, the upper surfaces of the reflectors 1401 for subpixels 1100R, 1100G, and 1100B were aligned, while the position of the upper surface of the second electrode 1206 differed depending on the type of subpixel 1100R, 1100G, and 1100B.

[0165] In contrast, in the second example shown in Figure 16, the upper surface of the second electrode 1206 is arranged to align with the subpixels 1100R, 1100G, and 1100B. In order to align the upper surfaces of the second electrode 1206, the upper surface of the reflector 1401 is arranged differently for the subpixels 1100R, 1100G, and 1100B, depending on the type of subpixel. As a result, the lower surface of the reflector 1401 has a stepped shape depending on the type of subpixel 1100R, 1100G, and 1100B.

[0166] The materials and other components constituting the reflector 1401, the optical adjustment layer 1402, the first electrode 1202, and the second electrode 1206 are the same as those described in the first example, so their explanation will be omitted.

[0167] (Resonator structure: Third example) Figure 17 is a schematic cross-sectional view illustrating the third example of the resonator structure. In the third example as well, the first electrode 1202 and the second electrode 1206 are formed with a common film thickness in each subpixel 1100.

[0168] In the third example, the reflector 1401 is positioned below the first electrode 1202 of the subpixel 1100, with the optical adjustment layer 1402 in between. A resonator structure is formed between the reflector 1401 and the second electrode 1206 to resonate the light generated by the organic layer 1204. Similar to the first and second examples, the thickness of the optical adjustment layer 1402 varies depending on the color that the subpixel 1100 should display. And, similar to the second example, the upper surface of the second electrode 1206 is positioned so that it aligns with the subpixels 1100R, 1100G, and 1100B.

[0169] In the second example shown in Figure 16, the lower surface of the reflector 1401 had a stepped shape corresponding to the type of sub-pixel 1100R, 1100G, and 1100B in order to align the upper surface of the second electrode 1206.

[0170] In contrast, in the third example shown in Figure 17, the film thickness of the reflector 1401 is set to differ depending on the type of sub-pixel 1100R, 1100G, and 1100B. More specifically, the film thickness is set so that the lower surfaces of the reflectors 1401R, 1401G, and 1401B are aligned.

[0171] The materials constituting the reflector 1401, the optical adjustment layer 1402, the first electrode 1202, and the second electrode 1206 are the same as those described in the first example, so their explanation will be omitted.

[0172] (Resonator structure: 4th example) Figure 18 is a schematic cross-sectional view illustrating the 4th example of a resonator structure.

[0173] In the first example shown in Figure 15, the first electrode 1202 and the second electrode 1206 of the subpixel 1100 are formed with a common film thickness. A reflector 1401 is placed below the first electrode 1202 of the subpixel 1100, with an optical adjustment layer 1402 in between.

[0174] In contrast, in the fourth example shown in Figure 18, the optical adjustment layer 1402 is omitted, and the film thickness of the first electrode 1202 is set to differ depending on the type of subpixel 1100R, 1100G, and 1100B.

[0175] The reflector 1401 is formed with a common film thickness for each subpixel 1100. The film thickness of the first electrode 1202 differs depending on the color that the subpixel 1100 is to display. By having the first electrodes 1202R, 1202G, and 1202B have different film thicknesses, it is possible to set the optical distance that produces the optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0176] The materials constituting the reflector 1401, the first electrode 1202, and the second electrode 1206 are the same as those described in the first example, so their explanation will be omitted.

[0177] (Resonator structure: Fifth example) Figure 19 is a schematic cross-sectional view illustrating the fifth example of a resonator structure.

[0178] In the first example shown in Figure 15, the first electrode 1202 and the second electrode 1206 are formed with a common film thickness in each subpixel 1100. A reflector 1401 is placed below the first electrode 1202 of the subpixel 1100, with an optical adjustment layer 1402 in between.

[0179] In contrast, in the fifth example shown in Figure 19, the optical adjustment layer 1402 was omitted, and instead, an oxide film 1404 was formed on the surface of the reflector 1401. The thickness of the oxide film 1404 was set to differ depending on the type of subpixel 1100R, 1100G, and 1100B.

[0180] The thickness of the oxide film 1404 varies depending on the color that the subpixel 1100 is to display. By having oxide films 1404R, 1404G, and 1404B with different thicknesses, it is possible to set the optical distance that produces the optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0181] The oxide film 1404 is a film obtained by oxidizing the surface of the reflector 1401, and is composed of, for example, aluminum oxide, tantalum oxide, titanium oxide, magnesium oxide, zirconium oxide, etc. The oxide film 1404 functions as an insulating film for adjusting the optical path length (optical distance) between the reflector 1401 and the second electrode 1206.

[0182] The oxide film 1404, which has a different thickness depending on the type of subpixel 1100R, 1100G, and 1100B, can be formed, for example, as follows.

[0183] First, the container is filled with electrolyte, and the substrate on which the reflector 1401 is formed is immersed in the electrolyte. Then, electrodes are positioned opposite the reflector 1401.

[0184] Then, a positive voltage is applied to the reflector 1401 with the electrode as the reference, and the reflector 1401 is anodized. The thickness of the oxide film formed by anodization is proportional to the voltage value applied to the electrode. Therefore, anodization is performed on each of the reflectors 1401R, 1401G, and 1401B with a voltage corresponding to the type of sub-pixel 1100R, 1100G, and 1100B applied. This makes it possible to form oxide films 1404 of different thicknesses all at once.

[0185] The materials constituting the reflector 1401, the first electrode 1202, and the second electrode 1206 are the same as those described in the first example, so their explanation will be omitted.

[0186] (Resonator Structure: Sixth Example) Figure 20 is a schematic cross-sectional view illustrating the sixth example of a resonator structure. In the sixth example, the subpixel 1100 is constructed by stacking a first electrode 1202, an organic layer 1204, and a second electrode 1206. However, in the sixth example, the first electrode 1202 is formed to serve both as an electrode and a reflector. The first electrode (and reflector) 1202 is made of a material having optical constants selected according to the type of subpixel 1100R, 1100G, and 1100B. By different phase shifts caused by the first electrode (and reflector) 1202, it is possible to set an optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0187] The first electrode (and reflector) 1202 can be made from a single metal such as aluminum (Al), silver (Ag), gold (Au), or copper (Cu), or from an alloy mainly composed of these metals. For example, the first electrode (and reflector) 1202R of the subpixel 1100R can be made of copper (Cu), and the first electrode (and reflector) 1202G of the subpixel 1100G and the first electrode (and reflector) 1202B of the subpixel 1100B can be made of aluminum.

[0188] The materials and other components constituting the second electrode 1206 are the same as those described in the first example, so we will omit further explanation.

[0189] (Resonator Structure: Seventh Example) Figure 21 is a schematic cross-sectional view illustrating the seventh example of the resonator structure. The seventh example basically applies the sixth example to sub-pixels 1100R and 1100G, and the first example to sub-pixel 1100B. In this configuration as well, it is possible to set the optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0190] The first electrodes (which also serve as reflectors) 1202R and 1202G used in the sub-pixels 1100R and 1100G can be made from elemental metals such as aluminum (Al), silver (Ag), gold (Au), and copper (Cu), or alloys in which these metals are the main components.

[0191] The materials constituting the reflector 1401B, optical adjustment layer 1402B, and first electrode 1202B used in the subpixel 1100B are the same as those described in the first example, so their explanation will be omitted.

[0192] <<9. Application Examples>> For example, the technology relating to this disclosure may be applied to the display units of various electronic devices. Therefore, examples of electronic devices to which this technology can be applied will be described below.

[0193] (Specific Example 1) Figure 22A is a front view showing an example of the external appearance of the digital still camera 500, and Figure 22B is a rear view showing an example of the external appearance of the digital still camera 500. This digital still camera 500 is a single-lens reflex type with interchangeable lenses, and has an interchangeable shooting lens unit (interchangeable lens) 512 located approximately in the center of the front of the camera body 511, and a grip portion 513 for the photographer to hold on the left side of the front.

[0194] A monitor 514 is provided on the back of the camera body 511, slightly to the left of the center. An electronic viewfinder (eyepiece) 515 is provided above the monitor 514. The photographer can determine the composition by looking through the electronic viewfinder 515 and visually confirming the light image of the subject guided by the shooting lens unit 512. The display device 10 according to the embodiment of this disclosure can be used as the monitor 514 and the electronic viewfinder 515.

[0195] (Specific Example 2) Figure 23 is an external view of a head-mounted display 600. The head-mounted display 600 has, for example, an eyeglass-shaped display unit 611 and ear hooks 612 on both sides for attachment to the user's head. In this head-mounted display 600, the display device 10 according to the embodiment of this disclosure can be used as the display unit 611.

[0196] (Specific Example 3) Figure 24 is an external view of the see-through head-mounted display 634. The see-through head-mounted display 634 consists of a main body 632, an arm 633, and a lens barrel 631.

[0197] The main body 632 is connected to the arm 633 and the eyeglasses 630. Specifically, the long end of the main body 632 is connected to the arm 633, and one side of the main body 632 is connected to the eyeglasses 630 via a connecting member. The main body 632 may also be directly attached to the head of a person.

[0198] The main body 632 houses a control board for controlling the operation of the see-through head-mounted display 634 and a display unit. The arm 633 connects the main body 632 to the lens barrel 631 and supports the lens barrel 631. Specifically, the arm 633 is connected to the end of the main body 632 and the end of the lens barrel 631, respectively, and fixes the lens barrel 631 in place. The arm 633 also houses signal lines for communicating image-related data provided from the main body 632 to the lens barrel 631.

[0199] The lens barrel 631 projects image light, provided from the main body 632 via the arm 633, through the eyepiece lens towards the eyes of the user wearing the see-through head-mounted display 634. In this see-through head-mounted display 634, the display device 10 according to the embodiment of this disclosure can be used in the display section of the main body 632.

[0200] (Specific Example 4) Figure 25 shows an example of the appearance of a television device 710. This television device 710 has, for example, a video display screen section 711 including a front panel 712 and a filter glass 713, and this video display screen section 711 is configured by a display device 10 according to the embodiment of this disclosure.

[0201] (Specific Example 5) Figure 26 shows an example of the appearance of a smartphone 800. The smartphone 800 has a display unit 802 that displays various information, and an operation unit consisting of buttons, etc. that accept user input. The display unit 802 may be the display device 10 according to this embodiment.

[0202] (Specific Example 6) Figures 27A and 27B show the internal configuration of an automobile having a display device 10 according to an embodiment of this disclosure as a display device. More specifically, Figure 27A shows the interior of the automobile from the rear to the front, and Figure 27B shows the interior of the automobile from the diagonally rear to the diagonally front.

[0203] The automobile shown in Figures 27A and 27B includes a center display 911, a console display 912, a head-up display 913, a digital rear mirror 914, a steering wheel display 915, and a rear entertainment display 916. Some or all of these displays can be fitted with the display device 10 according to the embodiment of this disclosure.

[0204] The center display 911 is positioned on the center console 907, facing the driver's seat 901 and the passenger seat 902. Figures 27A and 27B show an example of a horizontally elongated center display 911 extending from the driver's seat 901 to the passenger seat 902, but the screen size and placement of the center display 911 are arbitrary. The center display 911 can display information detected by various sensors (not shown). As a specific example, the center display 911 can display images captured by an image sensor, distance images to obstacles in front of or to the side of the vehicle measured by a ToF (Time of Flight) sensor, and the body temperature of passengers detected by an infrared sensor. The center display 911 can be used to display, for example, at least one of safety-related information, operation-related information, life logs, health-related information, authentication / identification-related information, and entertainment-related information.

[0205] Safety-related information includes information such as drowsiness detection, distraction detection, detection of mischief by a passenger, seatbelt fastening status, and detection of an unattended occupant. This information is detected, for example, by a sensor (not shown) placed on top of the back of the center display 1911. Operation-related information is detected by sensing occupant gestures using sensors. The detected gestures may include the operation of various equipment in the vehicle. For example, the sensor detects the operation of air conditioning equipment, navigation systems, AV (Audio / Visual) systems, lighting systems, etc. Life logs include the life logs of all occupants. For example, life logs include records of each occupant's actions while riding in the vehicle. By acquiring and saving life logs, it is possible to confirm the state of the occupants at the time of an accident. Health-related information is detected by sensing the occupant's body temperature using a temperature sensor and inferring the occupant's health status based on the detected body temperature. Alternatively, the occupant's face may be captured using an image sensor, and the occupant's health status may be inferred from the facial expression captured. Furthermore, the system may engage in automated voice conversations with the occupants and infer their health status based on their responses. Authentication / identification-related information includes keyless entry functions that use sensors for facial recognition and functions that automatically adjust seat height and position based on facial recognition. Entertainment-related information includes functions that use sensors to detect information on how the occupants operate the AV equipment and functions that use sensors to recognize the occupants' faces and provide content suitable for the occupants through the AV equipment.

[0206] The console display 912 can be used, for example, to display life log information. The console display 912 is located near the shift lever 908 on the center console 907 between the driver's seat 901 and the passenger seat 902. The console display 912 can also display information detected by various sensors (not shown). In addition, the console display 912 may display an image of the area around the vehicle captured by an image sensor, or it may display an image showing the distance to obstacles around the vehicle.

[0207] The head-up display 913 is virtually displayed behind the windshield 904 in front of the driver's seat 901. The head-up display 913 can be used to display at least one of the following: safety-related information, operation-related information, life logs, health-related information, authentication / identification-related information, and entertainment-related information. Because the head-up display 913 is often virtually positioned in front of the driver's seat 901, it is suitable for displaying information directly related to the operation of the vehicle, such as the vehicle's speed and fuel (battery) level.

[0208] The digital rearview mirror 914 can not only display what is behind the vehicle, but also what is happening to the passengers in the rear seat. By placing a sensor (not shown) on top of the back of the digital rearview mirror 914, it can be used, for example, to display life log information.

[0209] The steering wheel display 915 is positioned near the center of the steering wheel 906 of the automobile. The steering wheel display 915 can be used to display at least one of the following: safety-related information, operation-related information, life log, health-related information, authentication / identification-related information, and entertainment-related information. In particular, because the steering wheel display 915 is located near the driver's hands, it is suitable for displaying life log information such as the driver's body temperature, or information related to the operation of AV equipment, air conditioning equipment, etc.

[0210] The rear entertainment display 916 is mounted on the back of the driver's seat 901 and the passenger seat 902, and is intended for viewing by rear-seat passengers. The rear entertainment display 916 can be used to display at least one of the following: safety-related information, operation-related information, life logs, health-related information, authentication / identification-related information, and entertainment-related information. In particular, because the rear entertainment display 916 is in front of the rear-seat passengers, it displays information relevant to the rear-seat passengers. For example, it may display information related to the operation of AV equipment or air conditioning equipment, or it may display the results of measurements of the rear-seat passengers' body temperature, etc., taken by a temperature sensor (not shown).

[0211] <<10. Supplementary Information>> Although preferred embodiments of the present disclosure have been described in detail above with reference to the attached drawings, the technical scope of the present disclosure is not limited to such examples. It is clear that a person with ordinary skill in the art of the present disclosure may conceive of various modifications or alterations within the scope of the technical ideas described in the claims, and these will naturally also fall within the technical scope of the present disclosure.

[0212] Furthermore, the effects described herein are merely descriptive or illustrative and not limiting. In other words, the technology relating to this disclosure may produce other effects that are obvious to those skilled in the art from the description herein, in addition to or instead of the effects described herein.

[0213] Furthermore, this technology can also take the following configurations: (1) A display device comprising first, second, and third light-emitting elements that emit light of different colors from each other, wherein the first light-emitting element has a first color filter having a first color, the second and third light-emitting elements each have a second color filter having a second color that is the complementary color of the first color, and a separation layer made of a color filter material having the first color is provided at the boundary between the second and third light-emitting elements. (2) The display device according to (1), wherein each of the first, second, and third light-emitting elements emits light of one of the colors red, green, and blue. (3) The display device according to (2), wherein the first color is one of the colors red, green, and blue. (4) The display device according to (3), wherein the second color is one of the colors magenta, cyan, and yellow. (5) The display device according to (4), wherein each of the first, second, and third light-emitting elements has a laminated structure comprising a lower electrode, a light-emitting layer, and an upper electrode. (6) The display device according to (5), wherein the first, second, and third light-emitting elements each have a light-emitting layer that emits light of different colors from each other. (7) The display device according to (6), wherein each of the first, second, and third light-emitting elements each has a light-emitting layer that emits light of one of the colors red, green, and blue. (8) The display device according to (5), wherein the second light-emitting element has a light-emitting layer that emits light of a third color, and the first and third light-emitting elements each have a light-emitting layer that emits light of a fourth color which is the complementary color of the third color. (9) The display device according to (8), wherein the third color is one of red, green, and blue. (10) The display device according to (9), wherein the fourth color is one of magenta, cyan, and yellow. (11) The display device according to any one of (1) to (10), wherein the separation layer is provided between the second color filter of the second light-emitting element and the second color filter of the third light-emitting element. (12) The display device according to (11), wherein the film thickness of the first color filter, the second color filter, and the separation layer are the same.(13) The display device according to (11), wherein the film thickness of the second color filter is thinner than the film thickness of the first color filter and the separation layer. (14) The display device according to (13), wherein the first color filter and the separation layer are stretched to cover a part of the upper surface of the second color filter. (15) The display device according to (11), wherein the film thickness of the second color filter is thicker than the film thickness of the first color filter and the separation layer. (16) The display device according to (15), wherein the second color filter is stretched to cover a part of the upper surface of the first color filter and the separation layer. (17) The display device according to any one of (1) to (10), wherein the separation layer is provided on the upper or lower side of the second color filter. (18) The display device according to any one of (1) to (17), wherein each of the first, second and third light-emitting elements has an on-chip lens provided above the first and second color filters. (19) A method for manufacturing a display device comprising first, second and third light-emitting elements that emit light of different colors from each other, comprising: forming a laminated structure of the first, second and third light-emitting elements on a substrate; forming a second color filter having a second color that is the complementary color of the first color on the laminated structure of the second and third light-emitting elements; then forming a first color filter having the first color on the laminated structure of the first light-emitting element, while simultaneously forming a separation layer made of a color filter material having the first color between the second color filters. (20) Electronic device equipped with a display device, wherein the display device comprises first, second and third light-emitting elements that emit light of different colors from each other, the first light-emitting element has a first color filter having a first color, the second and third light-emitting elements have second color filters having a second color that is the complementary color of the first color, and a separation layer made of a color filter material having the first color is provided at the boundary between the second light-emitting element and the third light-emitting element.

[0214] 10 Display device 11 Horizontal drive circuit 12 Vertical drive circuit 20, 20a, 20b, 20c Pixels 100, 100B, 100G, 100R Subpixels 110, 110b, 110g, 110r Light-emitting element 200 Substrate 210 Anode electrode 212, 212b, 212c, 212g, 212m, 212r, 212y Light-emitting layer 214 Cathode electrode 220 Protective film 230, 230b, 230c, 230g, 230m, 230r, 230y Color filter 232, 232b, 232g, 232r Separation layer 240 Planarization film 250 On-chip lens 260 Encapsulation film 270 Opposing substrate 300 Image 310 Real image 320 Ghost

Claims

1. A display device comprising first, second, and third light-emitting elements that emit light of different colors from each other, wherein the first light-emitting element has a first color filter having a first color, the second and third light-emitting elements each have a second color filter having a second color which is the complementary color of the first color, and a separation layer made of a color filter material having the first color is provided at the boundary between the second and third light-emitting elements.

2. The display device according to claim 1, wherein each of the first, second, and third light-emitting elements emits light having one of the colors red, green, and blue.

3. The display device according to claim 2, wherein the first color is one of red, green, and blue.

4. The display device according to claim 3, wherein the second color is one of magenta, cyan, and yellow.

5. The display device according to claim 4, wherein each of the first, second, and third light-emitting elements has a laminated structure comprising a lower electrode, a light-emitting layer, and an upper electrode.

6. The display device according to claim 5, wherein the first, second, and third light-emitting elements each have a light-emitting layer that emits light of different colors from each other.

7. The display device according to claim 6, wherein each of the first, second, and third light-emitting elements has the light-emitting layer that emits light of one of the colors red, green, and blue.

8. The display device according to claim 5, wherein the second light-emitting element has a light-emitting layer that emits light having a third color, and the first and third light-emitting elements each have a light-emitting layer that emits light having a fourth color which is the complementary color of the third color.

9. The display device according to claim 8, wherein the third color is one of red, green, and blue.

10. The display device according to claim 9, wherein the fourth color is one of magenta, cyan, and yellow.

11. The display device according to claim 1, wherein the separation layer is provided between the second color filter of the second light-emitting element and the second color filter of the third light-emitting element.

12. The display device according to claim 11, wherein the thickness of the first color filter, the second color filter, and the separation layer are the same.

13. The display device according to claim 11, wherein the film thickness of the second color filter is thinner than the film thickness of the first color filter and the separation layer.

14. The display device according to claim 13, wherein the first color filter and the separation layer are extended to cover a portion of the upper surface of the second color filter.

15. The display device according to claim 11, wherein the film thickness of the second color filter is thicker than the film thickness of the first color filter and the separation layer.

16. The display device according to claim 15, wherein the second color filter is extended to cover the first color filter and a portion of the upper surface of the separation layer.

17. The display device according to claim 1, wherein the separation layer is provided on the upper or lower side of the second color filter.

18. The display device according to claim 1, wherein each of the first, second, and third light-emitting elements has an on-chip lens provided above the first and second color filters.

19. A method for manufacturing a display device comprising first, second, and third light-emitting elements that emit light of different colors from each other, comprising: forming a laminated structure of the first, second, and third light-emitting elements on a substrate; forming a second color filter having a second color that is the complementary color of the first color on the laminated structure of the second and third light-emitting elements; and then forming a first color filter having the first color on the laminated structure of the first light-emitting element, while simultaneously forming a separation layer made of a color filter material having the first color between the second color filters.

20. Electronic device equipped with a display device, wherein the display device comprises first, second and third light-emitting elements that emit light of different colors from each other, the first light-emitting element having a first color filter having a first color, the second and third light-emitting elements having a second color filter having a second color that is the complementary color of the first color, and a separation layer made of a color filter material having the first color is provided at the boundary between the second light-emitting element and the third light-emitting element.

Images