Display device

Abstract

To provide a display device capable of limiting a viewing angle.SOLUTION: A display device in an embodiment includes a substrate, a plurality of light-emitting elements disposed over the substrate, a lower part that surrounds each of the plurality of light-emitting elements, an upper part disposed over the lower part and having a first opening surrounded by an edge part projecting from a side surface of the lower part, and a first lens overlapping with the first opening at least partially and formed in a convex shape projecting to the side opposite to the first opening. The edge part includes a first opening edge and a second opening edge facing each other in a first direction and parallel to each other in a second direction that intersects with the first direction. The light-emitting elements include a first light-emitting element overlapping with the first opening. The first opening includes a first central line that is parallel to the second direction, in which the distance along the first direction from each of the first opening edge and the second opening edge is equal. The first lens includes a first lens central line that is parallel to the second direction. The first lens central line exists between the first central line and the first opening edge.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] Embodiments of the present invention relate to a display device.

Background Art

[0002] In recent display devices, there is a demand to vary the viewing angle at which a predetermined contrast ratio can be obtained. For example, in a display device mounted on a vehicle such as an automobile, viewing angle control is required such that the display image can be viewed from the passenger seat side while the display image cannot be viewed from the driver's seat side during driving.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a display device capable of restricting the viewing angle.

Means for Solving the Problems

[0005] According to an embodiment, a display device includes a substrate, a plurality of light-emitting elements disposed above the substrate, a lower part surrounding each of the plurality of light-emitting elements, an upper part disposed on the lower part and having a first opening surrounded by an edge protruding from a side surface of the lower part, and a first lens overlapping at least a part of the first opening and formed in a convex shape protruding to a side opposite to the first opening. The edge includes a first opening edge and a second opening edge facing each other in a first direction and parallel to a second direction intersecting the first direction. The plurality of light-emitting elements includes a first light-emitting element overlapping the first opening. The first opening has a first center line parallel to the second direction and having equal distances along the first direction from each of the first opening edge and the second opening edge. The first lens has a first lens center line parallel to the second direction, and the first lens center line is located between the first center line and the first opening edge.

Brief Description of the Drawings

[0006]

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[0007] Some embodiments will be described with reference to the drawings. The disclosure is merely an example, and for those skilled in the art, obvious appropriate modifications that maintain the gist of the invention are naturally included in the scope of the present invention. Also, the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual aspect for clearer explanation, but it is merely an example and does not limit the interpretation of the present invention. Also, in this specification and each drawing, components that exhibit the same or similar functions as those described above with respect to the previously shown drawings may be given the same reference numerals, and detailed descriptions may be appropriately omitted as needed.

[0008] Note that in the drawings, for easy understanding as needed, X-axis, Y-axis, and Z-axis orthogonal to each other are described. The direction along the X-axis is referred to as the first direction X, the direction along the Y-axis is referred to as the second direction Y, and the direction along the Z-axis is referred to as the third direction Z. Viewing various elements parallel to the third direction Z is referred to as a plan view.

[0009] The display device according to the present embodiment is an organic electroluminescence display device including an organic light-emitting diode (OLED) as a display element, and can be mounted on a television, a personal computer, in-vehicle equipment, a tablet terminal, a smartphone, a mobile phone terminal, or the like.

[0010] FIG. 1 is a diagram showing a configuration example of a display device DSP according to an embodiment. The display device DSP includes a display panel PNL having a display area DA for displaying an image and a peripheral area SA outside the display area DA on an insulating substrate 10. The substrate 10 may be glass or a flexible resin film.

[0011] In FIG. 1, the shape of the substrate 10 in a plan view is a rectangle having a long side parallel to the first direction X. However, the shape of the substrate 10 in a plan view is not limited to this example, and may be other shapes such as a rectangle having a long side parallel to the second direction Y, a square, a circle, or an ellipse.

[0012] The display area DA includes a plurality of pixels PX arranged in a matrix in the first direction X and the second direction Y. The pixel PX includes a plurality of sub-pixels SP. In one example, the pixel PX includes a sub-pixel SP1 of a first color, a sub-pixel SP2 of a second color, and a sub-pixel SP3 of a third color. The first color, the second color, and the third color are different from each other. Note that the pixel PX may include sub-pixels SP of other colors such as white, together with or in place of the sub-pixels SP1, SP2, and SP3.

[0013] The sub-pixel SP includes a pixel circuit 1 and a display element DE driven by the pixel circuit 1. The pixel circuit 1 includes a pixel switch 2, a driving transistor 3, and a capacitor 4. The pixel switch 2 and the driving transistor 3 are switching elements formed of, for example, thin film transistors.

[0014] The gate electrode of the pixel switch 2 is connected to the scanning line GL. One of the source electrode and the drain electrode of the pixel switch 2 is connected to the signal line SL, and the other is connected to the gate electrode of the driving transistor 3 and the capacitor 4. In the driving transistor 3, one of the source electrode and the drain electrode is connected to the power supply line PL and the capacitor 4, and the other is connected to the anode of the display element DE.

[0015] Note that the configuration of the pixel circuit 1 is not limited to the illustrated example. For example, the pixel circuit 1 may include more thin film transistors and capacitors.

[0016] The display element DE is an organic light emitting diode (OLED) as a light emitting element, and may be referred to as an organic EL element.

[0017] Although not described in detail, terminals for connecting an IC chip and a flexible printed circuit board are provided in the peripheral region SA.

[0018] FIG. 2 is a schematic plan view showing an example of the layout of the sub-pixels SP1, SP2, and SP3. In the example of FIG. 2, the sub-pixels SP2 and SP3 are arranged in the second direction Y. The sub-pixels SP1 and SP2 are arranged in the first direction X, and the sub-pixels SP1 and SP3 are arranged in the first direction X.

[0019] When the sub-pixels SP1, SP2, and SP3 have such a layout, in the display area DA, for example, a column in which the sub-pixels SP2 and SP3 are alternately arranged in the second direction Y and a column in which a plurality of sub-pixels SP1 are repeatedly arranged in the second direction Y are formed. These columns are alternately arranged in the first direction X.

[0020] Note that the layout of the sub-pixels SP1, SP2, and SP3 is not limited to the example of FIG. 2. As another example, the sub-pixels SP1, SP2, and SP3 in each pixel PX may be arranged in order in the first direction X.

[0021] An inorganic insulating layer 5 and a partition wall 6 are arranged in the display area DA. The inorganic insulating layer 5 has openings A51, A52, and A53 in the sub-pixels SP1, SP2, and SP3, respectively. The inorganic insulating layer 5 having these openings A51, A52, and A53 may be referred to as a rib.

[0022] The partition wall 6 overlaps with the inorganic insulating layer 5 in plan view. The partition wall 6 is formed in a lattice shape surrounding the openings A51, A52, and A53. The partition wall 6 has openings A61, A62, and A63 surrounded by the upper edge portions of the partition wall 6, which will be described later with reference to FIG. 4. The opening A61 (first opening) surrounds the opening A51 in the sub-pixel SP1. The opening A62 (second opening) surrounds the opening A52 in the sub-pixel SP2. The opening A63 (third opening) surrounds the opening A53 in the sub-pixel SP3. In the example of FIG. 2, the corners of each of the openings A51, A52, A53 and the openings A61, A62, A63 are formed in a round shape, but they may be formed at right angles, or each of the openings A51, A52, A53 and the openings A61, A62, A63 may be formed in other shapes such as circular or elliptical. The partition wall 6 has conductivity and is electrically connected to the terminal of the common potential among the plurality of terminals provided in the peripheral region SA shown in FIG. 1.

[0023] The sub-pixels SP1, SP2, and SP3 each include display elements DE1, DE2, and DE3 as display elements DE.

[0024] The display element DE1 (first light-emitting element) of the sub-pixel SP1 includes a lower electrode LE1, an upper electrode UE1, and an organic layer OR1 that respectively overlap with the openings A51 and A61. The display element DE1 including the lower electrode LE1, the organic layer OR1, and the upper electrode UE1 is surrounded by the opening A61 in plan view. The peripheral edge portions of each of the lower electrode LE1, the organic layer OR1, and the upper electrode UE1 overlap with the inorganic insulating layer 5 in plan view. The organic layer OR1 includes, for example, a light-emitting layer that emits light in the green wavelength range.

[0025] The display element DE2 (second light-emitting element) of the sub-pixel SP2 includes a lower electrode LE2, an upper electrode UE2, and an organic layer OR2 that respectively overlap with the openings A52 and A62. The display element DE2 including the lower electrode LE2, the organic layer OR2, and the upper electrode UE2 is surrounded by the opening A62 in plan view. The peripheral edge portions of each of the lower electrode LE2, the organic layer OR2, and the upper electrode UE2 overlap with the inorganic insulating layer 5 in plan view. The organic layer OR2 includes, for example, a light-emitting layer that emits light in the blue wavelength range.

[0026] The display element DE3 (third light-emitting element) of the sub-pixel SP3 includes a lower electrode LE3, an upper electrode UE3, and an organic layer OR3 that respectively overlap the openings A53 and A63. The display element DE3 including the lower electrode LE3, the organic layer OR3, and the upper electrode UE3 is surrounded by the opening A63 in plan view. The peripheral portions of the lower electrode LE3, the organic layer OR3, and the upper electrode UE3 overlap the inorganic insulating layer 5 in plan view. The organic layer OR3 includes, for example, a light-emitting layer that emits light in the red wavelength range.

[0027] In the example of FIG. 2, the outer shapes of the lower electrodes LE1, LE2, and LE3 are indicated by dotted lines, and the outer shapes of the organic layers OR1, OR2, OR3, and the upper electrodes UE1, UE2, and UE3 are indicated by one-dot chain lines. Note that the outer shapes of the illustrated lower electrodes, organic layers, and upper electrodes do not necessarily reflect the exact shapes.

[0028] The lower electrodes LE1, LE2, and LE3 correspond to, for example, the anodes of the display elements. The upper electrodes UE1, UE2, and UE3 correspond to the cathodes or common electrodes of the display elements and are in contact with the partition wall 6.

[0029] In the example of FIG. 2, the areas of the openings A51, A52, and A53 are different from each other. The area of the opening A51 is larger than the area of the opening A52, and the area of the opening A52 is larger than the area of the opening A53. In other words, the area of the lower electrode LE1 exposed from the opening A51 is larger than the area of the lower electrode LE2 exposed from the opening A52, and the area of the lower electrode LE2 exposed from the opening A52 is larger than the area of the lower electrode LE3 exposed from the opening A53. Note that the size relationship of the areas of the openings A51, A52, and A53 is not limited to the illustrated example.

[0030] Similarly, in the example of FIG. 2, the areas of the openings A61, A62, and A63 are different from each other. The area of the opening A61 is larger than the area of the opening A62, and the area of the opening A62 is larger than the area of the opening A63. Note that the size relationship of the areas of the openings A61, A62, and A63 is not limited to the illustrated example.

[0031] FIG. 3 is a plan view showing an example of the layout of the openings A61, A62, A63 of the partition wall 6 and the lenses ML1, ML2. In FIG. 3, illustration of the lower electrode, the organic layer, the upper electrode, etc. constituting the display element of each sub-pixel is omitted.

[0032] In the opening A61, the edge of the partition wall 6 includes an opening edge AE1 (first opening edge) and an opening edge AE2 (second opening edge). The opening A61 has a center line AC1 (first center line). The opening edges AE1, AE2, and the center line AC1 are parallel to the second direction Y. The opening edges AE1, AE2 face each other in the first direction X. The center line AC1 is located at an equal distance from each of the opening edges AE1, AE2 along the first direction X. In the example of FIG. 3, the distance D1 along the first direction X between the opening edge AE1 and the center line AC1 is equal to the distance D2 along the first direction X between the opening edge AE2 and the center line AC1 (D1 = D2).

[0033] In the opening A62, the edge of the partition wall 6 includes an opening edge AE3 (third opening edge) and an opening edge AE4 (fourth opening edge). The opening A62 has a center line AC2 (second center line). The opening edges AE3, AE4, and the center line AC2 are parallel to the second direction Y. The opening edges AE3, AE4 face each other in the first direction X. The center line AC2 is located at an equal distance from each of the opening edges AE3, AE4 along the first direction X. In the example of FIG. 3, the distance D3 along the first direction X between the opening edge AE3 and the center line AC2 is equal to the distance D4 along the first direction X between the opening edge AE4 and the center line AC2 (D3 = D4).

[0034] In the opening A63, the edge of the partition wall 6 includes an opening edge AE5 (the fifth opening edge) and an opening edge AE6 (the sixth opening edge). The opening A63 has a center line AC3 (the third center line). The opening edges AE5, AE6, and the center line AC3 are parallel to the second direction Y. The opening edges AE5 and AE6 face each other in the first direction X. The center line AC3 is located at an equal distance from each of the opening edges AE5 and AE6 along the first direction X. In the example of FIG. 3, the distance D5 along the first direction X between the opening edge AE5 and the center line AC3 is equal to the distance D6 along the first direction X between the opening edge AE6 and the center line AC3 (D5 = D6).

[0035] The display device DSP further includes lenses ML1 (the first lens) and ML2 (the second lens). In the example of FIG. 3, the lenses ML1 and ML2 extend in the second direction Y and face a plurality of sub-pixels arranged in the second direction Y.

[0036] The lens ML1 overlaps a part of the opening A61. The lens ML1 has lens edges ME1, ME2 and a lens center line MC1 (the first lens center line). The lens edges ME1, ME2 and the lens center line MC1 are parallel to the second direction Y. In the illustrated example, the lens edge ME1 overlaps the partition wall 6 in plan view and is located between the opening edge AE1 and the opening edge AE4 and between the opening edge AE1 and the opening edge AE6 in the first direction X. Also, the lens edge ME2 intersects the partition wall 6 in plan view, overlaps the opening A61, and is located between the opening edge AE2 and the center line AC1 in the first direction X. Further, the lens ML1 covers the opening edge AE1 but does not cover the opening edge AE2. The lens center line MC1 is located between the center line AC1 and the opening edge AE1 in plan view.

[0037] In the illustrated example, the lens ML1 does not completely cover the opening A61 in the first direction X. However, this is not limited to this example, and the lens ML1 may completely cover the opening A61.

[0038] Lens ML2 continuously overlaps with a part of each of openings A62 and A63. Lens ML2 has lens edges ME3 and ME4 and a lens center line MC2 (second lens center line). The lens edges ME3 and ME4 and the lens center line MC2 are parallel to the second direction Y. In the illustrated example, the lens edge ME3 overlaps with the partition wall 6 in plan view and is located between the opening edge AE2 and the opening edge AE3 and between the opening edge AE2 and the opening edge AE5 in the first direction X. Also, the lens edge ME4 intersects the partition wall 6 in plan view, overlaps with the openings A62 and A63, and is located between the opening edge AE4 and the center line AC2 and between the opening edge AE6 and the center line AC3 in the first direction X. Furthermore, the lens ML2 continuously covers the opening edges AE3 and AE5 but does not cover the opening edges AE4 and AE6. The lens center line MC2 is located between the center line AC2 and the opening edge AE3 and between the center line AC3 and the opening edge AE5.

[0039] In the illustrated example, the lens ML2 does not completely cover the openings A62 and A63 in the first direction X. However, the present invention is not limited to this example, and the lens ML2 may completely cover the openings A62 and A63.

[0040] In this specification, the lens center line is a line connecting a plurality of principal points of the lens. The principal point is a point where the principal plane of the lens and the optical axis are orthogonal. The principal plane is a plane that includes the intersection points of the incident light ray and the emitted light ray before and after the incident of a light ray parallel to the optical axis on the lens and is orthogonal to the optical axis.

[0041] FIG. 4 is a cross-sectional view showing a configuration example of the display device DSP along the line A-A' in FIG. 3. The circuit layer 11 is disposed on the substrate 10. The circuit layer 11 includes various circuits such as the pixel circuit 1 shown in FIG. 1 and various wirings such as the scanning line GL, the signal line SL, and the power supply line PL. The circuit layer 11 is covered by an insulating layer 12. The insulating layer 12 is an organic insulating layer that planarizes the unevenness generated by the circuit layer 11.

[0042] The lower electrodes LE1 and LE2 are disposed on the insulating layer 12 and are spaced apart from each other. The inorganic insulating layer 5 is disposed on the insulating layer 12 and the lower electrodes LE1 and LE2. The opening A51 of the inorganic insulating layer 5 overlaps the lower electrode LE1, and the opening A52 overlaps the lower electrode LE2. The peripheral portions of the lower electrodes LE1 and LE2 are covered with the inorganic insulating layer 5. Between the lower electrodes adjacent to each other among the lower electrodes LE1 and LE2, the insulating layer 12 is covered with the inorganic insulating layer 5. The lower electrodes LE1 and LE2 are connected to the respective pixel circuits 1 of the sub-pixels SP1 and SP2 through contact holes provided in the insulating layer 12. Note that the contact holes in the insulating layer 12 are omitted in FIG. 4.

[0043] The partition wall 6 includes a conductive lower portion 61 disposed on the inorganic insulating layer 5 and an upper portion 62 disposed on the lower portion 61. The lower portion 61 surrounds the display elements DE1 and DE2 in plan view. The upper portion 62 has edge portions AE surrounding the openings A61 and A62, respectively, in plan view. The edge portions AE protrude more than the side surfaces of the lower portion 61. Such a shape of the partition wall 6 is called an overhang shape.

[0044] In the illustrated example, the lower portion 61 has a first conductive layer 63 disposed on the inorganic insulating layer 5 and a second conductive layer 64 disposed on the first conductive layer 63. For example, the first conductive layer 63 is formed thinner than the second conductive layer 64. Also, in the illustrated example, both ends of the first conductive layer 63 protrude from the side surfaces of the second conductive layer 64.

[0045] The upper portion 62 has a thin film 65 disposed on the second conductive layer 64 and a thin film 66 disposed on the thin film 65. Both ends of the thin film 65 and the thin film 66 protrude from the side surfaces of the second conductive layer 64. In the illustrated example, the ends of the thin film 65 surround the openings A61 and A62. The edge portion AE corresponds to, for example, the ends of the thin film 65.

[0046] The organic layer OR1 contacts the lower electrode LE1 through the opening A51, covers the lower electrode LE1 exposed from the opening A51, and has its peripheral portion located on the inorganic insulating layer 5. The upper electrode UE1 covers the organic layer OR1 and contacts the lower portion 61.

[0047] The organic layer OR2 contacts the lower electrode LE2 through the opening A52, covers the lower electrode LE2 exposed from the opening A52, and has its peripheral portion located on the inorganic insulating layer 5. The upper electrode UE2 covers the organic layer OR2 and contacts the lower portion 61.

[0048] In the example of FIG. 4, the sub-pixel SP1 has a cap layer CP1 and a first sealing layer SE11, and the sub-pixel SP2 has a cap layer CP2 and a first sealing layer SE12. The cap layers CP1 and CP2 serve as optical adjustment layers for improving the light extraction efficiency of the light emitted from the organic layers OR1 and OR2, respectively. Note that the cap layers CP1 and CP2 may be omitted. The cap layer CP1 is disposed on the upper electrode UE1. The cap layer CP2 is disposed on the upper electrode UE2.

[0049] The first sealing layer SE11 is disposed on the cap layer CP1, contacts the partition wall 6, and continuously covers each member of the sub-pixel SP1. The first sealing layer SE12 is disposed on the cap layer CP2, contacts the partition wall 6, and continuously covers each member of the sub-pixel SP2.

[0050] In the example of FIG. 4, a part of each of the organic layer OR1, the upper electrode UE1, and the cap layer CP1 is located on the partition wall 6 around the sub-pixel SP1. These portions are spaced apart from the portions located in the opening A51 (the portions constituting the display element DE1) of the organic layer OR1, the upper electrode UE1, and the cap layer CP1.

[0051] Similarly, a part of each of the organic layer OR2, the upper electrode UE2, and the cap layer CP2 is located on the partition wall 6 around the sub-pixel SP2, and these portions are separated from the portions located in the opening A52 (the portions constituting the display element DE2) among the organic layer OR2, the upper electrode UE2, and the cap layer CP2.

[0052] In the following description, the multilayer body including the organic layer OR1, the upper electrode UE1, and the cap layer CP1 is referred to as the stacked film FL1, and the multilayer body including the organic layer OR2, the upper electrode UE2, and the cap layer CP2 is referred to as the stacked film FL2.

[0053] The ends of the first sealing layers SE11 and SE12 and the ends of the stacked films FL1 and FL2 are each located on the partition wall 6. In the example of FIG. 4, the stacked film FL1 and the first sealing layer SE11 on the partition wall 6 between the sub-pixels SP1 and SP2 are separated from the stacked film FL2 and the first sealing layer SE12 on the partition wall 6.

[0054] The partition wall 6 and the first sealing layers SE11 and SE12 are covered by an organic insulating layer RS1 (first organic insulating layer). The organic insulating layer RS1 is covered by a second sealing layer SE2. The second sealing layer SE2 is covered by an organic insulating layer RS2 (second organic insulating layer). In the illustrated example, the organic insulating layer RS2 is thicker than the organic insulating layer RS1.

[0055] The lenses ML1 and ML2 are disposed on the organic insulating layer RS2. The lenses ML1 and ML2 are formed in a convex shape protruding in the opposite direction to the openings A61 and A62 in the third direction Z. The lens ML1 overlaps the lower electrode LE1, the stacked film FL1, and the first sealing layer SE11 in the third direction Z, and the lens ML2 overlaps the lower electrode LE2, the stacked film FL2, and the first sealing layer SE12 in the third direction Z. In one example, the lenses ML1 and ML2 are covered by an air layer. In another example, they are covered by a material having a refractive index smaller than that of the lenses ML1 and ML2.

[0056] Note that the focal positions of the lenses ML1 and ML2 preferably coincide with the position of the light-emitting layer included in the organic layers OR1 and OR2. Note that the focal positions of the lenses ML1 and ML2 can be made to coincide with the position of the light-emitting layer, for example, by changing the thicknesses of the organic insulating layers RS1 and RS2.

[0057] Cover members such as a polarizing plate and a cover glass may be further disposed above the lenses ML1 and ML2.

[0058] The display device DSP further includes a light-shielding layer BM disposed on the organic insulating layer RS2. The light-shielding layer BM covers the space between the lens ML1 and the lens ML2. In the illustrated example, both end portions of the light-shielding layer BM are covered by the lenses ML1 and ML2. Note that the light-shielding layer BM only needs to cover at least the portion of the opening of the partition 6 that is not covered by the lens.

[0059] The inorganic insulating layer 5, the first sealing layers SE11 and SE12, and the second sealing layer SE2 are formed of an inorganic insulating material such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (Al2O3), for example. The organic insulating layers RS1 and RS2 are formed of a resin material (organic insulating material) such as an epoxy resin or an acrylic resin, for example.

[0060] The lower portion 61 of the partition 6 is formed of a conductive material and is electrically connected to the upper electrodes UE1 and UE2. The first conductive layer 63 is formed of a titanium-based material such as titanium or a titanium compound, for example. The second conductive layer 64 is formed of a material different from that of the first conductive layer 63 and the upper portion 62 and is formed of an aluminum-based material such as aluminum or an aluminum compound, for example.

[0061] The upper portion 62 of the partition 6 is formed of a conductive material, for example, but may be formed of an insulating material. The thin film 65 is formed of a titanium-based material such as titanium or a titanium compound, for example. The thin film 66 is formed of an oxide conductive material such as indium tin oxide (ITO), for example.

[0062] The lower electrodes LE1 and LE2 are a multilayer body including a transparent layer formed of an oxide conductive material such as indium tin oxide (ITO) and a reflective layer formed of a metal material such as silver. In one example, the lower electrodes LE1 and LE2 are a multilayer body including a reflective layer between a pair of transparent layers. The lower transparent layer functions as an adhesion layer that adheres to the insulating layer 12.

[0063] In one example, the organic layer OR1 includes a light-emitting layer formed of a material that emits light in the green wavelength range, and the organic layer OR2 includes a light-emitting layer formed of a material that emits light in the blue wavelength range. In another example, the organic layer OR1 may include a light-emitting layer formed of a material that emits light in the blue wavelength range, and the organic layer OR2 may include a light-emitting layer formed of a material that emits light in the green wavelength range. Further, each of the organic layers OR1 and OR2 includes a plurality of functional layers such as a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0064] The upper electrodes UE1 and UE2 are formed of a metal material such as an alloy of magnesium and silver (MgAg), for example. The cap layers CP1 and CP2 are a multilayer body of a plurality of thin films. The plurality of thin films are all transparent and have different refractive indexes from each other.

[0065] The lenses ML1 and ML2 are formed of a transparent resin material such as an epoxy resin, an acrylic resin, or a polyimide resin, for example.

[0066] Next, the effects of the present embodiment will be described with reference to FIG. 5. FIG. 5 is a diagram for explaining the effects of the present embodiment. In the following, the direction from the center line AC1 toward the lens center line MC1 along the first direction X is defined as the direction X1, and the direction from the lens center line MC1 toward the center line AC1 along the first direction X is defined as the direction X2.

[0067] The light ray L1 emitted from the display element DE1 along the third direction Z and passing through the lens center line MC1 travels through the lens ML1 with almost no refraction. In the illustrated example, the light ray L1 travels along the third direction Z.

[0068] Further, the light ray L2 emitted from the display element DE1 along the third direction Z and incident on the lens ML1 near the lens edge ME2 is refracted at the interface between the lens ML1 and the air. The refracted light ray L2 travels along a direction inclined at an angle θ1 from the third direction Z to the direction X1.

[0069] Furthermore, the light ray L3 emitted from the display element DE1 near the aperture edge AE1 along the third direction Z and incident on the lens ML1 is refracted at the interface between the lens ML1 and the air. The refracted light ray L3 travels along a direction inclined at an angle θ2 from the third direction Z to the direction X2.

[0070] In the illustrated example, the region combining the region between the light ray L1 and the light ray L2 and the region between the light ray L1 and the light ray L3 is defined as the region AR1, and the other region is defined as AR2. At this time, a user in the region AR1 can visually recognize the image displayed on the display device DSP. On the other hand, a user in the region AR2 can hardly recognize the image.

[0071] Here, when the lens center line MC1 and the center line AC1 coincide, the angle θ1 is equal to the angle θ2 (θ1 = θ2). On the other hand, as in the present embodiment, when the lens center line MC1 approaches the aperture edge AE1, the angle θ2 becomes smaller, and the angle θ2 becomes smaller than the angle θ1 (θ1 > θ2). Therefore, the region of the region AR1 on the X2 side of the lens center line MC1 is narrower than the region of the region AR1 on the X1 side of the lens center line MC1. Accordingly, the viewing angle on the X2 side can be restricted.

[0072] Next, the case where the display device DSP of the present embodiment is mounted on a vehicle such as an automobile will be described. FIG. 6 is a diagram showing the display device DSP of the present embodiment mounted on an in-vehicle device. As an example, the case where the display device DSP is mounted between the driver's seat and the passenger seat will be described. Note that the display device DSP may be mounted in front of the passenger seat.

[0073] For example, during driving, it is required to make the image displayed on the display device DSP difficult to view from the driver's seat side, while making it visible from the passenger seat side. In this case, the display device DSP is arranged at a position where the passenger PAS in the passenger seat is included in the region AR1 and the driver DRV is included in the region AR2. Then, the passenger PAS in the passenger seat within the region AR1 can view the screen 101 on which the image is displayed in the display area DA. On the other hand, the driver DRV within the region AR2 is restricted from viewing the displayed image, and can view the screen 102 on which a darker image than that on the passenger seat side is displayed or no image is displayed. Thus, by restricting the viewing angle on the driver's seat side, it becomes possible to restrict the viewing of the image by the driver DRV.

[0074] FIG. 7 is a cross-sectional view showing another configuration example of the display device DSP along the line A-A' in FIG. 3. In the example shown in FIG. 7, the end portion of the light shielding layer BM is in contact with each of the lens edges ME1 to ME4.

[0075] Also in the display device DSP shown in FIG. 7, the same effects as those of the display device DSP shown in FIG. 4 can be obtained.

[0076] FIG. 8 is a cross-sectional view showing still another configuration example of the display device DSP along the line A-A' in FIG. 3. The display device DSP shown in FIG. 8 is different from the display device DSP shown in FIG. 4 in that it does not include the light shielding layer BM shown in FIG. 4 and the lenses ML1 and ML2 are in contact with each other.

[0077] The lens ML1 is in contact with the lens ML2. Specifically, the lens edge ME1 of the lens ML1 is in contact with the lens edge ME4 of the lens ML2, and the lens edge ME2 of the lens ML1 is in contact with the lens edge ME3 of the lens ML2. That is, the opening of the partition wall 6 is completely covered by the lenses. In the example of FIG. 8, the lens edge ME1 and the lens edge ME4, and the lens edge ME2 and the lens edge ME3 are in contact with each other on the upper surface of the organic insulating layer RS2, but they may be in contact above the organic insulating layer RS2.

[0078] In the display device DSP shown in FIG. 8, the opening of the partition wall 6 is completely covered by the lens. Therefore, it is not necessary to provide the light-shielding layer BM shown in FIG. 4. As a result, it is possible to improve the brightness of the display device DSP.

[0079] FIG. 9 is a cross-sectional view showing still another configuration example of the display device DSP along the line A-A' in FIG. 3. The display device DSP shown in FIG. 9 is different from the display device DSP shown in FIG. 4 in that the cross-sectional shapes of the lenses ML1 and ML2 are different.

[0080] The lens ML1 has a flat surface P1 at the top. The lens ML2 has a flat surface P2 at the top. In the example of FIG. 9, the surfaces P1 and P2 are planes parallel to the first direction X and the second direction Y. Note that the surfaces P1 and P2 may be inclined with respect to the plane formed by the first direction X and the second direction Y.

[0081] Also in the display device DSP shown in FIG. 9, the same effects as those of the display device DSP shown in FIG. 4 can be obtained.

[0082] FIG. 10 is a cross-sectional view showing still another configuration example of the display device DSP along the line A-A' in FIG. 3. The display device DSP shown in FIG. 10 is different from the display device DSP shown in FIG. 4 in that the cross-sectional shapes of the lenses ML1 and ML2 are different.

[0083] The lens ML1 has a cross-section that is asymmetric with respect to the lens center line MC1. In the example of FIG. 10, the lens edge ME1 is formed in a planar shape parallel to the second direction Y and the third direction Z. Similarly to the lens ML1, in the lens ML2, the lens edge ME3 is formed in a planar shape parallel to the second direction Y and the third direction Z.

[0084] Also in the display device DSP shown in FIG. 10, the same effects as those of the display device DSP shown in FIG. 4 can be obtained.

[0085] FIG. 11 is a cross-sectional view showing still another configuration example of the display device DSP along the line A-A' in FIG. 3. The display device DSP shown in FIG. 11 is different from the display device DSP shown in FIG. 4 in that it includes a color filter.

[0086] The display device DSP further includes color filters CF1 and CF2. The color filter CF1 is disposed between the organic insulating layer RS2 and the lens ML1 in the third direction Z. The color filter CF1 is disposed directly above the display element DE1. The color filter CF1 is formed of a resin material colored green as an example.

[0087] The color filter CF2 is disposed between the organic insulating layer RS2 and the lens ML2 in the third direction Z. The color filter CF2 is disposed directly above the display element DE2. The color filter CF2 is formed of a resin material colored blue as an example.

[0088] The light-shielding layer BM overlaps the peripheral edges of the color filters CF1 and CF2. In the illustrated example, the light-shielding layer BM covers the lens edges ME1 to ME4 in plan view.

[0089] Although not shown, the display device DSP includes a color filter disposed directly above the display element DE3 shown in FIG. 2. The color filter is formed of a resin material colored red as an example.

[0090] In the display device DSP shown in FIG. 11, for example, the green light emitted from the display element DE1 passes through the color filter CF1. On the other hand, the blue light emitted from the display element DE2 is absorbed by the color filter CF1. Thereby, color mixing of light can be suppressed, and a decrease in display quality can be suppressed.

[0091] In the display device DSP shown in FIG. 11, the same effects as those of the display device DSP shown in FIG. 4 can be obtained.

[0092] FIG. 12 is a schematic plan view showing an example of the layout of lenses ML1 and ML2. The display device DSP further includes a plurality of pixels PX1 (first pixels) in the display area DA. Each of the plurality of pixels PX1 includes apertures A61, A62, and A63. In the illustrated example, the plurality of pixels PX1 are repeatedly arranged in the second direction Y. Also, the columns of the plurality of pixels PX1 arranged in the second direction Y are repeatedly arranged in the first direction X.

[0093] The lenses ML1 and ML2 continuously overlap with a plurality of pixels PX1 arranged along the second direction Y in the third direction Z. Specifically, the lens ML1 continuously overlaps with a plurality of apertures A61 arranged along the second direction Y in the third direction Z. Also, the lens ML2 continuously overlaps with the apertures A62 and A63 alternately arranged along the second direction Y in the third direction Z. Note that the lenses ML1 and ML2 may be discontinuous for each pixel in the second direction Y.

[0094] In the display device DSP shown in FIG. 12, the same effects as those of the display device DSP shown in FIG. 4 can be obtained.

[0095] FIG. 13 is a schematic plan view showing another example of the layout of lenses ML1 and ML2. The display device DSP further includes a plurality of pixels PX2 (second pixels) in the display area DA. Each of the plurality of pixels PX2 includes apertures A64, A65, and A66 surrounded by the edge AE of the upper portion 62 of the partition wall 6 shown in FIG. 4. Each of the apertures A64, A65, and A66 overlaps with a plurality of display elements included in a pixel PX2 (not shown). The pixel PX2 is configured in the same manner as the above-described pixel PX1, and although not described in detail, includes display elements similar to the display elements DE1, DE2, and DE3 included in the pixel PX1.

[0096] In the example shown in FIG. 13, the opening A64 (the fourth opening) is adjacent to each of the openings A62, A63, A65, and A66 in the first direction X. Further, the opening A65 (the fifth opening) is adjacent to the openings A61 and A64 in the first direction X and is adjacent to the opening A66 in the second direction Y. Furthermore, the opening A66 (the sixth opening) is adjacent to the openings A61 and A64 in the first direction X and is adjacent to the opening A65 in the second direction Y.

[0097] Each of the openings A64, A65, and A66 does not overlap with any of the lenses, and neither of the lenses ML1 and ML2 that overlap with the pixel PX1 overlaps in the third direction Z. Therefore, the light emitted from the display element that overlaps with each of the openings A64, A65, and A66 is not affected by the field angle limitation by the lens.

[0098] The plurality of pixels PX1 are repeatedly arranged in the second direction Y. The plurality of pixels PX2 are repeatedly arranged in the second direction Y. The columns of the plurality of pixels PX1 arranged in the second direction Y and the columns of the plurality of pixels PX2 arranged in the second direction Y are alternately arranged in the first direction X. In one example, the number of pixels PX1 arranged in the display area DA is approximately equal to the number of pixels PX2.

[0099] Here, the relationship between the length W1 along the first direction X of the pixels PX1 and PX2 adjacent to each other in the first direction X among the pixels PX1 and PX2 alternately arranged in the first direction X and the length H1 along the second direction Y of one of the pixels PX1 arranged in the second direction Y is as follows. In the illustrated example, the lengths along the first direction X of each of the pixels PX1 and PX2 are equal to each other, and the length along the first direction X of the pixel PX1 is equal to the length along the second direction Y. That is, the length W1 is about twice the length H1 (W1 = 2 × H1).

[0100] As described above, in pixel PX1, lens ML1 overlaps with aperture A61, and lens ML2 overlaps with apertures A62 and A63. Also, in pixel PX2, lenses ML1 and ML2 do not overlap with any of apertures A64, A65, and A66. That is, lenses ML1 and ML2 are arranged at intervals of one pixel in the first direction X. Note that when n is an integer of 2 or more, the lenses may be arranged at intervals of n pixels. In this case, length W1 is approximately n times length H1 (W1 = n × H1).

[0101] In the display device DSP shown in FIG. 13, when a plurality of pixels PX1 are lit and a plurality of pixels PX2 are not lit (hereinafter referred to as the first mode), the viewing angle of the display device DSP is restricted. On the other hand, when a plurality of pixels PX1 are not lit and a plurality of pixels PX2 are lit, or when both a plurality of pixels PX1 and PX2 are lit (hereinafter referred to as the second mode), the viewing angle of the display device DSP is wider than in the first mode. Therefore, it is possible to control the viewing angle of the display device DSP by switching between the first mode and the second mode according to the use of the display device DSP.

[0102] Note that the number of pixels PX1 in the display device DSP shown in FIG. 13 is approximately half the number of pixels PX1 in the display device DSP shown in FIG. 12. Therefore, the resolution of the image displayed by the display device DSP in FIG. 13 in the first mode is approximately half the resolution of the image displayed by the display device DSP in FIG. 12. Here, the resolution is defined as the number of pixels contributing to the display per unit area. Also, in the display device DSP shown in FIG. 13, the number of pixels PX2 is approximately equal to the number of pixels PX1. Therefore, when pixels PX1 are not lit and pixels PX2 are lit, the resolution of the image displayed by the display device DSP in FIG. 13 is approximately half the resolution of the image displayed by the display device DSP in FIG. 12. That is, the resolution of the image in the above case is approximately equal to the resolution of the image displayed in the first mode.

[0103] On the one hand, when both pixels PX1 and PX2 are lit, light from both pixels PX1 and PX2 can be visually recognized from the X1 direction side, and only the light of pixel PX2 can be visually recognized from the X2 direction side. Therefore, when both pixels PX1 and PX2 are lit, the resolution of the image displayed by the display device DSP in FIG. 13 when viewed from the X1 direction side is approximately equal to the resolution of the image displayed by the display device DSP in FIG. 12. That is, the resolution of the image in the above case is approximately twice the resolution of the image displayed in the first mode. Also, when both pixels PX1 and PX2 are lit, the resolution of the image displayed by the display device DSP in FIG. 13 when viewed from the X2 direction side is approximately half the resolution of the image displayed by the display device DSP in FIG. 12. That is, the resolution of the image in the above case is approximately equal to the resolution of the image displayed in the first mode.

[0104] Next, the case where the display device DSP shown in FIG. 13 is mounted on a vehicle such as an automobile will be described. FIG. 14 is a diagram showing the display device DSP of the present embodiment mounted on an in-vehicle device. As an example, the case where the display device DSP is mounted between the driver's seat and the passenger seat will be described. Note that the display device DSP may be mounted in front of the passenger seat.

[0105] When the image is displayed in the first mode, similar to the case described with reference to FIG. 6, a passenger PAS in the passenger seat within the region AR1 can visually recognize the screen 101 on which the image is displayed in the display area DA. On the other hand, from the driver DRV within the region AR2, visual recognition of the displayed image is restricted, and a screen 102 on which a darker image than the passenger seat side is displayed or no image is displayed can be visually recognized.

[0106] When the image is displayed in the second mode, the passenger PAS in the passenger seat can visually recognize the screen 101 on which the image is displayed in the display area DA. On the other hand, the driver DRV can visually recognize the screen 103 on which the same image as the image visually recognized by the passenger PAS in the passenger seat is displayed.

[0107] When driving, while making it difficult to visually recognize the image displayed on the display device DSP from the driver's seat side, if it is desired to make the image visible from the passenger seat side, the image is displayed in the first mode. Then, although the visual recognition of the image is restricted from the driver's seat side, the image can be visually recognized well from the passenger seat side. On the other hand, when it is desired to make the image visible from both the driver's seat side and the passenger seat side in the engine-off state, the image is displayed in the second mode. Then, the image can be visually recognized well from both the driver's seat side and the passenger seat side. Thus, by switching between the first mode and the second mode, the viewing angle is controlled, and in particular, it becomes possible to switch the visibility of the image from the driver's seat side.

[0108] FIG. 15 is a diagram showing an example of pixels applicable to the display device DSP shown in FIG. 13. The display device DSP includes pixels PX3 instead of the pixels PX1 and PX2 shown in FIG. 13. The plurality of pixels PX3 are arranged over the entire display area DA and are arranged in a matrix in the first direction X and the second direction Y.

[0109] The pixel PX3 includes openings A61 to A66. Each of the openings A61 to A66 overlaps a plurality of display elements (not shown). In one example, signal lines are electrically connected to the plurality of display elements individually, and individual image signals are supplied to each display element.

[0110] The relationship between the length W2 along the first direction X of one pixel PX3 arranged in the first direction X and the length H2 along the second direction Y of one pixel PX3 arranged in the second direction Y is as follows. In the illustrated example, the length of the pixel PX3 along the first direction X is equal to the length along the second direction Y. That is, the length W2 is equal to the length H2 (W2 = H2).

[0111] As described above, the display device DSP shown in FIG. 13 has different resolutions for the images displayed in each mode. On the other hand, in the display device DSP shown in FIG. 15, the length W2 along the first direction X of one pixel PX3 arranged in the first direction X is equal to the length H2 along the second direction Y of one pixel PX3 arranged in the second direction Y. Therefore, the difference in resolution between each mode is reduced, and it becomes possible to improve the display quality.

[0112] FIG. 16 is a schematic plan view showing still another example of the layout of the lenses ML1 and ML2. In the example shown in FIG. 16, the aperture A64 is adjacent to each of the apertures A65 and A66 in the first direction X and is adjacent to the aperture A61 in the second direction Y. Further, the aperture A65 is adjacent to the aperture A64 in the first direction X and is adjacent to each of the apertures A63 and A66 in the second direction Y. Furthermore, the aperture A66 is adjacent to the aperture A64 in the first direction X and is adjacent to each of the apertures A62 and A65 in the second direction Y.

[0113] The plurality of pixels PX1 are repeatedly arranged in the first direction X. The plurality of pixels PX2 are repeatedly arranged in the first direction X. The columns of the plurality of pixels PX1 arranged in the first direction X and the columns of the plurality of pixels PX2 arranged in the first direction X are alternately arranged in the second direction Y. In one example, the number of pixels PX1 arranged in the display area DA is approximately equal to the number of pixels PX2.

[0114] Here, the relationship between the length W3 along the first direction X of one pixel PX1 arranged in the first direction X and the length H3 along the second direction Y of the pixels PX1 and PX2 adjacent to each other in the second direction Y for the pixels PX1 and PX2 arranged alternately in the first direction X is as follows. In the illustrated example, the lengths along the second direction Y of each of the pixels PX1 and PX2 are equal to each other, and the length along the first direction X of the pixel PX1 is equal to the length along the second direction Y. That is, the length H3 is approximately twice the length W3 (H3 = 2 × W3).

[0115] The lenses ML1 and ML2 are arranged at intervals of one pixel in the second direction Y. When m is an integer of 2 or more, the lenses may be arranged at intervals of m pixels. In this case, the length H3 is approximately m times the length W3 (H3 = m × W3).

[0116] In the display device DSP shown in FIG. 16, the same effects as those of the display device DSP shown in FIG. 13 can be obtained.

[0117] FIG. 17 is a diagram showing an example of pixels applicable to the display device DSP shown in FIG. 16. The display device DSP includes pixels PX4 instead of the pixels PX1 and PX2 shown in FIG. 16. The plurality of pixels PX4 are arranged over the entire display area DA and are arranged in a matrix in the first direction X and the second direction Y.

[0118] The pixel PX4 includes openings A61 to A66. Each of the openings A61 to A66 overlaps a plurality of display elements (not shown). In one example, signal lines are individually and electrically connected to the plurality of display elements, and individual image signals are supplied to each display element.

[0119] The relationship between the length W4 along the first direction X of one pixel PX4 arranged in the first direction X and the length H4 along the second direction Y of one pixel PX4 arranged in the second direction Y is as follows. In the illustrated example, the length along the first direction X of the pixel PX4 is equal to the length along the second direction Y. That is, the length W4 is equal to the length H4 (W4 = H4).

[0120] In the display device DSP shown in FIG. 17, the same effects as those of the display device DSP shown in FIG. 15 can be obtained.

[0121] FIG. 18 is a schematic plan view showing still another example of the layout of the lenses ML1 and ML2. A plurality of pixels PX1 and a plurality of pixels PX2 are alternately arranged in a first direction X and a second direction Y. That is, for the pixels PX1 and PX2 arranged alternately in the first direction X, the length in the first direction X of the pixels PX1 and PX2 adjacent to each other in the first direction X, and for the pixels PX1 and PX2 arranged alternately in the second direction Y, the length in the second direction Y of the pixels PX1 and PX2 adjacent to each other in the second direction Y are equal. Therefore, similar to the display device DSP shown in FIGS. 15 and 17, it is possible to reduce the difference in resolution between each mode.

[0122] Also in the display device DSP shown in FIG. 18, the same effect as that of the display device DSP shown in FIG. 13 can be obtained.

[0123] FIG. 19 is a schematic plan view showing still another example of the layout of the lenses ML1 and ML2. The arrangement of the apertures A61 to A66 and the lenses ML1 and ML2 shown in FIG. 19 is an arrangement obtained by inverting the arrangement of the apertures A61 to A66 and the lenses ML1 and ML2 shown in FIG. 18 about the second direction Y as an axis.

[0124] Also in the display device DSP shown in FIG. 19, the same effect as that of the display device DSP shown in FIG. 13 can be obtained.

[0125] FIG. 20 is a schematic plan view showing still another example of the layout of the lenses ML1 and ML2.

[0126] In the example shown in FIG. 20, the aperture A61 is adjacent to each of the apertures A62, A63, A65, and A66 in the first direction X, and is adjacent to the aperture A64 in the second direction Y. Also, the aperture A62 is adjacent to each of the apertures A61 and A64 in the first direction X, and is adjacent to each of the apertures A63 and A66 in the second direction Y. Further, the aperture A63 is adjacent to each of the apertures A61 and A64 in the first direction X, and is adjacent to each of the apertures A62 and A65 in the second direction Y.

[0127] In the example shown in FIG. 20, the opening A64 is adjacent to each of the openings A62, A63, A65, A66 in the first direction X and is adjacent to the opening A61 in the second direction Y. Further, the opening A65 is adjacent to each of the openings A61, A64 in the first direction X and is adjacent to each of the openings A63, A66 in the second direction Y. Furthermore, the opening A66 is adjacent to each of the openings A61, A64 in the first direction X and is adjacent to each of the openings A62, A65 in the second direction Y.

[0128] The plurality of pixels PX1 in which the openings A61, A62, A63 are arranged as described above and the plurality of pixels PX2 in which the openings A64, A65, A66 are arranged as described above are alternately arranged in the first direction X and the second direction Y.

[0129] Also in the display device DSP shown in FIG. 20, the same effects as those of the display device DSP shown in FIG. 18 can be obtained.

[0130] FIG. 21 is a schematic plan view showing still another example of the layout of the lenses ML1, ML2. The arrangement of the openings A61 to A66 and the lenses ML1, ML2 shown in FIG. 21 is an arrangement in which the arrangement of the openings A61 to A66 and the lenses ML1, ML2 shown in FIG. 20 is inverted about the second direction Y.

[0131] Also in the display device DSP shown in FIG. 21, the same effects as those of the display device DSP shown in FIG. 13 can be obtained.

[0132] FIG. 22 is a plan view showing an example of the layout of the openings A61, A62, A63 of the partition wall 6 and the lenses ML1, ML2, ML3. The display device DSP further includes a lens ML3 (third lens).

[0133] In the illustrated example, the lens ML1 is formed in a shape composed of lens edges ME1 and ME2 parallel to the second direction Y and two semi-circular arcs convex to the outside of the lens ML1 in the second direction Y in a plan view. Further, the lens ML2 is formed in a shape composed of lens edges ME3 and ME4 parallel to the second direction Y and two semi-circular arcs convex to the outside of the lens ML2 in the second direction Y in a plan view. Note that the lenses ML1 and ML2 may be formed in an elliptical shape or a circular shape in a plan view.

[0134] In the illustrated example, the lens ML3 is formed in a circular shape in a plan view. Note that the lens ML3 may be formed in a shape composed of a straight line parallel to the first direction X and two arcs convex to the outside of the lens ML3 in the first direction X or an elliptical shape in a plan view.

[0135] The lens ML1 is formed in a convex shape protruding to the side opposite to the opening A61 in the third direction Z. The lens ML2 is formed in a convex shape protruding to the side opposite to the opening A62 in the third direction Z. The lens ML3 is formed in a convex shape protruding to the side opposite to the opening A63 in the third direction Z.

[0136] Lens ML3 overlaps a part of aperture A63. Lens ML3 has lens edges ME5, ME6 and a lens center line MC3 (the third lens center line). The lens edges ME5, ME6 are the intersections of a straight line passing through the center of the circular lens ML3 and parallel to the first direction X with the circumference of the lens ML3. When the shape of lens ML3 in plan view is not circular, the lens edges ME5, ME6 may be straight lines parallel to the second direction Y. In the illustrated example, the lens edge ME5 overlaps the partition wall 6 in plan view and is located between the aperture edge AE2 and the aperture edge AE5 in the first direction X. Also, the lens edge ME6 overlaps the aperture A63 in plan view and is located between the aperture edge AE6 and the center line AC3 in the first direction X. Further, the lens ML3 covers the aperture edge AE5 but does not cover the aperture edge AE6. The lens center line MC3 is parallel to the second direction Y. The lens center line MC3 is located between the center line AC3 and the aperture edge AE5 in plan view.

[0137] In the illustrated example, the lens ML3 does not completely cover the aperture A63 in the first direction X. However, this is not limited to this example, and the lens ML1 may completely cover the aperture A63.

[0138] FIG. 23 is a schematic plan view showing an example of the layout of the lenses ML1, ML2, and ML3. The arrangement pattern of the pixel PX1 in FIG. 23 is the same as the arrangement pattern of the pixel PX1 shown in FIG. 12. The lenses ML1, ML2, and ML3 overlap the apertures A61, A62, and A63 of the plurality of pixels PX1, respectively.

[0139] In the display device DSP shown in FIG. 23, the same effects as those of the display device DSP shown in FIG. 12 can be obtained.

[0140] FIG. 24 is a schematic plan view showing another example of the layout of lenses ML1, ML2, and ML3. The arrangement patterns of pixels PX1 and PX2 in FIG. 24 are the same as the arrangement patterns of pixels PX1 and PX2 shown in FIG. 13. Lenses ML1, ML2, and ML3 overlap with each of the openings A61, A62, and A63 of the plurality of pixels PX1, but do not overlap with each of the openings A64, A65, and A66 of the plurality of pixels PX2.

[0141] Also in the display device DSP shown in FIG. 24, the same effects as those of the display device DSP shown in FIG. 13 can be obtained.

[0142] FIG. 25 is a schematic plan view showing still another example of the layout of lenses ML1, ML2, and ML3. The arrangement patterns of pixels PX1 and PX2 in FIG. 25 are the same as the arrangement patterns of pixels PX1 and PX2 shown in FIG. 16.

[0143] Also in the display device DSP shown in FIG. 25, the same effects as those of the display device DSP shown in FIG. 16 can be obtained.

[0144] FIG. 26 is a schematic plan view showing still another example of the layout of lenses ML1, ML2, and ML3. The arrangement patterns of pixels PX1 and PX2 in FIG. 26 are the same as the arrangement patterns of pixels PX1 and PX2 shown in FIG. 18.

[0145] Also in the display device DSP shown in FIG. 26, the same effects as those of the display device DSP shown in FIG. 18 can be obtained.

[0146] FIG. 27 is a schematic plan view showing still another example of the layout of lenses ML1, ML2, and ML3. The arrangement patterns of pixels PX1 and PX2 in FIG. 27 are the same as the arrangement patterns of pixels PX1 and PX2 shown in FIG. 21.

[0147] Also in the display device DSP shown in FIG. 27, the same effects as those of the display device DSP shown in FIG. 21 can be obtained.

[0148] Based on the display device described as an embodiment of the present invention above, all display devices that those skilled in the art can appropriately modify the design and implement also belong to the scope of the present invention as long as they include the gist of the present invention.

[0149] Within the scope of the idea of the present invention, those skilled in the art can conceive various modifications, and these modifications are also understood to belong to the scope of the present invention. For example, for the above-described embodiments, those in which those skilled in the art appropriately add, delete, or modify the components, or add, omit, or change the conditions of the steps, also belong to the scope of the present invention as long as they have the gist of the present invention.

[0150] Also, regarding other operational effects brought about by the aspects described in the above-described embodiments, those that are obvious from the description of this specification or can be appropriately conceived by those skilled in the art are naturally understood to be brought about by the present invention.

Explanation of Reference Numerals

[0151] DSP... Display device, PNL... Display panel, 10... Substrate, 5... Inorganic insulating layer, 6... Partition wall, BM... Light-shielding layer, PX, PX1, PX2, PX3... Pixel, SP, SP1, SP2, SP3... Sub-pixel, DE, DE1, DE2, DE3... Display element, 101, 102, 103... Screen, A51, A52, A53... Opening, A61~A66... Opening, AE... Edge, AE1~AE6... Opening edge, AC1, AC2, AC3... Center line, ML1, ML2, ML3... Lens, ME1~ME6... Lens edge, MC1, MC2, MC3... Lens center line, L1, L2, L3... Light ray, DRV... Driver, PAS... Passenger in the passenger seat.

Claims

1. A substrate, a plurality of light-emitting elements disposed above the substrate, a lower portion surrounding each of the plurality of light-emitting elements, an upper portion disposed on the lower portion and having a first opening surrounded by an edge protruding from a side surface of the lower portion, a first lens overlapping at least a part of the first opening and formed in a convex shape protruding to a side opposite to the first opening, and comprising: the edge includes a first opening edge and a second opening edge facing each other in a first direction and parallel to a second direction intersecting the first direction, the plurality of light-emitting elements includes a first light-emitting element overlapping the first opening, the first opening has a first center line parallel to the second direction and having equal distances along the first direction from each of the first opening edge and the second opening edge, the first lens has a first lens center line parallel to the second direction, the first lens center line is located between the first center line and the first opening edge, A display device.

2. The upper portion further has a second opening adjacent to the first opening in the first direction and surrounded by the edge, and further comprises a second lens overlapping at least a part of the second opening and formed in a convex shape protruding to a side opposite to the second opening, the edge includes a third opening edge and a fourth opening edge facing each other in the first direction and parallel to the second direction, the plurality of light-emitting elements includes a second light-emitting element overlapping the second opening, the second opening has a second center line parallel to the second direction and having equal distances along the first direction from each of the third opening edge and the fourth opening edge, the second lens has a second lens center line parallel to the second direction, the second lens center line is located between the second center line and the third opening edge, The display device according to Claim 1.

3. The upper portion further has a third opening adjacent to the second opening in the second direction and surrounded by the edge, and further comprises a third lens overlapping at least a part of the third opening and formed in a convex shape protruding to a side opposite to the third opening, the edge includes a fifth opening edge and a sixth opening edge facing each other in the first direction and parallel to the second direction, the plurality of light-emitting elements includes a third light-emitting element overlapping the third opening, the third opening has a third center line parallel to the second direction and having equal distances along the first direction from each of the fifth opening edge and the sixth opening edge, The third lens has a third lens center line parallel to the second direction, and the third lens center line is located between the third center line and the fifth opening edge. The display device according to claim 2.

4. The upper part further has a third opening that is adjacent to the second opening in the second direction and is surrounded by the edge portion. The edge portion includes a fifth opening edge and a sixth opening edge that face each other in the first direction and are parallel to the second direction. The plurality of light-emitting elements include a third light-emitting element that overlaps the third opening. The third opening has a third center line that is parallel to the second direction and has equal distances along the first direction from each of the fifth opening edge and the sixth opening edge. The second lens continuously overlaps the second opening and the third opening. The second lens center line is located between the third center line and the fifth opening edge. The display device according to claim 2.

5. Furthermore, a plurality of first pixels are provided. Each of the plurality of first pixels includes the first opening, the second opening, and the third opening, and is repeatedly arranged in the second direction. The first lens and the second lens continuously overlap the plurality of first pixels. The display device according to claim 4.

6. The upper part further includes a fourth opening adjacent to the first opening in the second direction, a fifth opening adjacent to the fourth opening in the first direction, and a sixth opening adjacent to the fifth opening in the second direction. The fourth opening, the fifth opening, and the sixth opening do not overlap the first lens, the second lens, and the third lens. The display device according to claim 3.

7. The upper part further includes a fourth opening adjacent to the first opening in the second direction, a fifth opening adjacent to the fourth opening in the first direction, and a sixth opening adjacent to the fifth opening in the second direction. The fourth opening, the fifth opening, and the sixth opening do not overlap the first lens and the second lens. The display device according to claim 4.

8. The upper part further includes a fourth opening adjacent to the third opening in the first direction, a fifth opening adjacent to the fourth opening in the first direction, and a sixth opening adjacent to the fifth opening in the second direction. The fourth opening, the fifth opening, and the sixth opening do not overlap the first lens and the second lens. The display device according to claim 4.

9. Furthermore, a plurality of first pixels and a plurality of second pixels are provided. Each of the plurality of first pixels includes the first opening, the second opening, and the third opening. Each of the plurality of second pixels includes the fourth opening, the fifth opening, and the sixth opening. The first pixel and the second pixel are alternately arranged in the second direction. The display device according to claim 6 or 7.

10. The first lens covers the first opening in the second direction. The display device according to claim 1.

11. The first lens covers the first opening. The display device according to claim 1.

12. Furthermore, it includes a light-shielding layer covering the space between the first lens and the second lens. The display device according to claim 2.

13. The first lens is in contact with the second lens. The display device according to claim 2.

14. The first lens has a flat surface at the top. The display device according to claim 1.

15. The first lens has a cross-section that is asymmetric with respect to the center line of the first lens. The display device according to claim 1.

16. Furthermore, a first organic insulating layer disposed on the first light-emitting element, A sealing layer disposed on the first organic insulating layer, And a second organic insulating layer disposed between the sealing layer and the first lens, The second organic insulating layer is thicker than the first organic insulating layer. The display device according to claim 1.

17. Furthermore, it includes a color filter disposed between the second organic insulating layer and the first lens. The display device according to claim 16.

18. The first light-emitting element has a light-emitting layer formed of a material that emits green or blue light. The display device according to claim 1.

19. In a plan view, the area of the first opening is larger than the areas of the second opening and the third opening. The display device according to claim 3 or 4.

20. The first lens is formed of a transparent resin material. The display device according to claim 1.

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