JP2021184500A - Light emitting device - Google Patents

Abstract

To make moire that can be caused by a pattern of a plurality of light emitting portions in a light emitting region and a pattern of light reflected on a light transmitting member by a light from a plurality of light emitting portions inconspicuous.SOLUTION: A plurality of light emitting portions 142 emit light in a first color. That is, a single light (light of the first color) is emitted from a light emitting region 140. In a pattern of the light emitting region 140, widths of a plurality of translucent portions 144 differ depending on the position in the light emitting region 140. In particular, a translucent portion 144 (first translucent portion) having a first width and a translucent portion 144 (second translucent portion) having a second width wider than the first width are alternately arranged. In this manner, the widths of the plurality of translucent portions 144 periodically change in an arrangement direction of the plurality of light emitting portions 142 and the plurality of translucent portions 144.SELECTED DRAWING: Figure 8

Description

The present invention relates to a light emitting device.

In recent years, an organic light emitting diode (OLED) has been developed as a light emitting device. The OLED has a first electrode, an organic layer and a second electrode, and the organic layer can emit light by organic electroluminescence (EL) by a voltage between the first electrode and the second electrode.

Patent Documents 1 and 2 describe that an OLED is attached to the rear glass of an automobile and the OLED is used as a sign light of an automobile. In particular, Patent Document 1 describes that the OLED has translucency. Specifically, in Patent Document 1, a plurality of second electrodes having light reflectivity are arranged in a striped pattern. Therefore, the light from the outside of the OLED can pass between the adjacent second electrodes. In this way, the OLED is translucent.

Patent Document 3 describes an OLED having a plurality of pixels. Each pixel has a red light emitting unit, a green light emitting unit, and a blue light emitting unit. The area of each light emitting part is reduced in the order of the red light emitting part, the green light emitting part, and the blue light emitting part. In particular, in the area of each light emitting unit, when the red light emitting unit, the green light emitting unit, and the blue light emitting unit are electrically connected in parallel, the brightness of each of the red light emitting unit, the green light emitting unit, and the blue light emitting unit becomes substantially constant. Has been decided.

Patent Document 4 describes an OLED having an auxiliary wiring. The auxiliary wiring extends on the first electrode and is covered by an insulating layer. The insulating layer is covered with an organic layer and is provided to prevent a short circuit between the first electrode and the second electrode. The width of the insulating layer depends on its position in the light emitting region.

Patent Document 5 describes a touch panel. The touch panel has a display (eg, a liquid crystal display (LCD) or an OLED display) and a plurality of transparent electrodes. The plurality of transparent electrodes are located on the light emitting surface side of the display and are arranged in a stripe shape. Patent Document 5 describes that moire occurs due to a pixel pattern of a display and a pattern of a plurality of transparent electrodes.

Japanese Unexamined Patent Publication No. 2015-195173 Japanese Unexamined Patent Publication No. 2015-76294 Japanese Unexamined Patent Publication No. 2003-77663 Japanese Unexamined Patent Publication No. 2016-46001 Japanese Unexamined Patent Publication No. 2014-63248

The present inventor has studied the use of light emitting regions including alternating light emitting parts and translucent parts in various light emitting systems, particularly high mount stop lamps (HMSLs) of automobiles. In particular, the present inventor has studied that a light-transmitting member is arranged on the light-emitting surface side of the light-emitting region at a distance from the light-emitting region, and the light-emitting region is protected by the light-transmitting member. However, when this light emitting region is viewed from the opposite side of the translucent member, moire may occur due to the pattern of the plurality of light emitting portions in the light emitting region and the pattern of the light reflected on the translucent member by the light from the plurality of light emitting portions. The present inventor has found.

One example of the problem to be solved by the present invention is to make the moire that can be caused by the pattern of a plurality of light emitting portions in the light emitting region and the pattern of the light reflected on the translucent member by the light from the plurality of light emitting portions inconspicuous. Is mentioned as.

The invention according to claim 1 is
A plurality of light emitting parts including the first light emitting part and the second light emitting part adjacent to each other and emitting light in the first color, and the first translucent part and the first light emitting part located between the first light emitting part and the second light emitting part. A light emitting region including a second translucent portion located on the opposite side of the first translucent portion of the light emitting portion, and a plurality of translucent portions located between adjacent light emitting portions.
A translucent member located on the light emitting surface side of the light emitting region and separated from the light emitting region.
Equipped with
The first light emitting unit and the second light emitting unit have different widths from each other, or the first light emitting unit and the second light emitting unit have different widths from each other.

It is a figure for demonstrating the light emitting device which concerns on Embodiment 1. FIG. It is a figure for demonstrating the reason why moire occurs. It is a figure for demonstrating a detailed example of the light emitting member shown in FIG. FIG. 3 is a plan view of the light emitting device shown in FIG. 3 as viewed from the first surface side of the substrate. FIG. 4 is a cross-sectional view taken along the line AA of FIG. It is a figure for demonstrating the light emitting region which concerns on 1st Example of Embodiment 1. The spectrum (upper part of FIG. 7) obtained by Fourier transforming the pattern at the position P of the comparative example 1 of FIG. 6 (the second stage of the comparative example 1 of FIG. 6) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 7) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 6). It is a figure for demonstrating the light emitting region which concerns on the 2nd example of Embodiment 1. FIG. The spectrum (upper part of FIG. 9) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 in FIG. 8 (the second stage of Comparative Example 1 of FIG. 8) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 9) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 8). It is a figure for demonstrating the light emitting region which concerns on the 3rd example of Embodiment 1. FIG. The spectrum (upper part of FIG. 11) obtained by Fourier transforming the pattern at the position P of the comparative example 1 of FIG. 10 (the second stage of the comparative example 1 of FIG. 10) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 11) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 10). It is a figure for demonstrating the light emitting region which concerns on 4th example of Embodiment 1. FIG. The spectrum (upper part of FIG. 13) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 in FIG. 12 (the second stage of Comparative Example 1 of FIG. 12) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 13) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 12). It is a figure for demonstrating the light emitting region which concerns on 5th example of Embodiment 1. FIG. The spectrum (upper part of FIG. 15) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 in FIG. 14 (the second stage of Comparative Example 1 of FIG. 14) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (lower part of FIG. 15) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 14). It is a figure for demonstrating the light emitting region which concerns on the 6th example of Embodiment 1. FIG. The spectrum (upper part of FIG. 17) obtained by Fourier transforming the pattern at the position P of the comparative example 1 of FIG. 16 (the second stage of the comparative example 1 of FIG. 16) and the position P of the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 17) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 16). It is a figure for demonstrating the first example of the detail of the light emitting region 140 shown in FIG. 10 or FIG. It is a figure for demonstrating the 2nd example of the detail of the light emitting region 140 shown in FIG. 10 or FIG. It is a figure for demonstrating the light emitting device which concerns on 1st Example of Embodiment 2. It is a figure for demonstrating an example of the moire by the light emitting device shown in FIG. The spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 21 (upper part of FIG. 22) and the spectrum obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 21 (upper part of FIG. 22). It is a figure which shows the lower part of FIG. 22). It is a figure for demonstrating the reason why moire becomes inconspicuous in Embodiment 2. It is a figure for demonstrating the light emitting device which concerns on 2nd Example of Embodiment 2. It is a figure for demonstrating an example of the moire by the light emitting device shown in FIG. 24. The spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 25 (upper part of FIG. 26) and the spectrum obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 25 (upper part of FIG. 26). It is a figure which shows the lower part of FIG. 26. It is a figure for demonstrating the light emitting device which concerns on 3rd Example of Embodiment 2. It is a figure for demonstrating an example of the moire by the light emitting device shown in FIG. 27. The spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 28 (upper part of FIG. 29) and the spectrum obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 28 (upper part). It is a figure which shows the lower part of FIG. 29). It is a figure for demonstrating the light emitting device which concerns on 4th example of Embodiment 2. It is a figure for demonstrating an example of the moire by the light emitting device shown in FIG. The spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 31 (upper part of FIG. 32) and the spectrum obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 31 (upper part of FIG. 32). It is a figure which shows the lower part of FIG. 32. It is a figure for demonstrating the light emitting device which concerns on 5th example of Embodiment 2. It is a figure for demonstrating the light emitting device which concerns on 6th example of Embodiment 2. It is a figure for demonstrating the light emitting device which concerns on 7th Example of Embodiment 2. It is a figure for demonstrating the light emitting device which concerns on 8th Example of Embodiment 2.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

(Embodiment 1)
FIG. 1 is a diagram for explaining the light emitting device 30 according to the first embodiment.

The light emitting device 30 includes a light emitting member 10 and a translucent member 20.

The light emitting member 10 has a light emitting region 140. The light emitting region 140 has a plurality of light emitting portions 142 and a plurality of translucent portions 144. The plurality of light emitting units 142 and the plurality of translucent units 144 are arranged alternately, and in particular, each of the plurality of translucent units 144 is located between adjacent light emitting units 142. The plurality of light emitting units 142 emit light in the first color. That is, a single light (light of the first color) is emitted from the light emitting region 140. The first color is, for example, red. The light emitted from the plurality of light emitting units 142 is emitted to the translucent member 20 side.

The translucent member 20 is located on the light emitting surface side of the light emitting region 140, away from the light emitting region 140. The translucent member 20 has a surface 22 and a surface 24. The translucent member 20 is positioned so that the surface 22 faces the light emitting region 140. On the surface 22 of the translucent member 20, the patterns of the plurality of light emitting portions 142 in the light emitting region 140 are reflected. The surface 24 is located on the opposite side of the surface 22.

The translucent member 20 can function as a cover that protects the light emitting member 10 (light emitting region 140). The translucent member 20 can be made of a transparent resin having high corrosion resistance, for example, acrylic resin or polycarbonate.

In the example shown in FIG. 1, the patterns of the plurality of light emitting portions 142 in the light emitting region 140 are located within the range of the angle θp from the position P, and the pattern of the light reflected on the translucent member 20 is the angle from the position P. It is located within the range of θc. The position P is located on the opposite side of the translucent member 20 with the light emitting region 140 interposed therebetween. The translucent member 20 is farther from the position P than the light emitting region 140, and therefore the angle θc is smaller than the angle θp.

The light emitting device 30 shown in FIG. 1 can be used for a high mount stop lamp (HMSL) of an automobile. Specifically, the light emitting member 10 becomes an HMSL, can be attached to the rear glass of an automobile, and emits light toward the outside of the automobile, particularly toward the rear of the automobile. The position P can be a position between the driver's seat and the passenger seat.

FIG. 2 is a diagram for explaining the reason why moire occurs.

At position P (the pattern in the third stage in FIG. 2), the pattern of the plurality of light emitting portions 142 in the light emitting region 140 (the pattern in the second stage in FIG. 2) and the pattern of light reflected on the translucent member 20 (FIG. 2). Moire is generated by the pattern in the first stage in 2), and the bright part (B) and the dark part (D) are alternately arranged.

Moire at the position P is generated by the difference between the width of the pattern of the plurality of light emitting portions 142 in the light emitting region 140 and the width of the pattern of the light reflected on the translucent member 20 at the position P. Specifically, as described above, the patterns of the plurality of light emitting portions 142 in the light emitting region 140 are located within the range of the angle θp from the position P, and the pattern of the light reflected on the translucent member 20 is the angle from the position P. It is located within the range of θc. The angle θc is smaller than the angle θp. Therefore, at the position P, the pattern of the plurality of light emitting portions 142 in the light emitting region 140 and the pattern of the light reflected on the translucent member 20 are misaligned, which causes moire at the position P.

FIG. 3 is a diagram for explaining a detailed example of the light emitting member 10 shown in FIG.

In the example shown in FIG. 3, the light emitting member 10 is a bottom emission, and the light from the light emitting unit 142 is emitted through the substrate 100 (details will be described later). In another example, the light emitting member 10 does not have to be bottom emission and may be top emission.

The light emitting member 10 includes a substrate 100. The substrate 100 has a first surface 102 and a second surface 104. The plurality of light emitting units 142 are located on the first surface 102 side of the substrate 100. The second surface 104 is located on the opposite side of the first surface 102. The substrate 100 is positioned so that the second surface 104 faces the translucent member 20.

The second surface 104 of the substrate 100 functions as a light emitting surface of the light emitting region 140. Specifically, the light from the plurality of light emitting units 142 passes through the substrate 100 and is emitted from the second surface 104 of the substrate 100 toward the translucent member 20.

FIG. 4 is a plan view of the light emitting device 30 shown in FIG. 3 as viewed from the first surface 102 side of the substrate 100. FIG. 5 is a cross-sectional view taken along the line AA of FIG.

The details of the plane layout of the light emitting member 10 will be described with reference to FIG.

The light emitting member 10 includes a substrate 100 and a light emitting region 140. The light emitting region 140 has a plurality of light emitting portions 142 and a plurality of translucent portions 144.

In the example shown in FIG. 4, the shape of the substrate 100 is a rectangle having a pair of long sides and a pair of short sides. The shape of the substrate 100 is not limited to the example shown in FIG.

The light emitting region 140 extends in a plane shape, and in the example shown in FIG. 4, the shape of the light emitting region 140 is a rectangle having a pair of long sides and a pair of short sides. In particular, in the example shown in FIG. 4, the plurality of light emitting portions 142 and the plurality of translucent portions 144 are stretched in the stretching direction of the short side of the substrate 100, and are arranged in the stretching direction of the long side of the substrate 100. In this way, the plurality of light emitting units 142 are arranged in a striped pattern. The shape of the light emitting region 140 is not limited to the example shown in FIG.

The details of the cross-sectional structure of the light emitting member 10 will be described with reference to FIG.

The light emitting member 10 has a substrate 100, a first electrode 110, an organic layer 120, and a second electrode 130.

The substrate 100 has a first surface 102 and a second surface 104. The second surface 104 is on the opposite side of the first surface 102. The first electrode 110, the organic layer 120, and the second electrode 130 are located on the first surface 102 side of the substrate 100.

The substrate 100 is made of a translucent insulating material. In one example, the substrate 100 is made of glass or resin (eg, PEN (polyethylene naphthalate), PES (polyether sulphon), PET (polyethylene terephthalate) or polyimide).

The substrate 100 may or may not have flexibility. If the substrate 100 is made of resin, the substrate 100 can be made flexible.

The first electrode 110 is made of a material having conductivity and translucency. In one example, the first electrode 110 contains a metal oxide, more specifically ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IWZO (Indium Tungsten Zinc Oxide) or ZnO (Zinc Oxide). .. In another example, the first electrode 110 may contain a conductive organic material, more specifically carbon nanotubes or PEDOT / PSS.

The organic layer 120 contains a material that emits light by an organic EL. In one example, the organic layer 120 has a hole injection layer (HIL), a hole transport layer (HTL), a light emitting layer (EML), and an electron transport layer (ETL) from the first electrode 110 side to the second electrode 130 side. ) And the electron injection layer (EIL) in order. Holes are injected into the EML from the first electrode 110 via the HIL and HTL, and electrons are injected into the EML from the second electrode 130 via the EIL and ETL. Holes and electrons recombine in EML, which emits light.

The second electrode 130 is made of a material having conductivity and light-shielding property, and particularly has light reflectivity. In one example, it comprises a metal, more specifically a metal selected from the group consisting of Al, Au, Ag, Pt, Mg, Sn, Zn and In, or an alloy of metals selected from this group. ..

The light emitting unit 142 has a laminated structure including the first surface 102 of the substrate 100, the first electrode 110, the organic layer 120, and the second electrode 130 in this order. As shown by the black arrow in FIG. 5, in the light emitting unit 142, the light emitted from the organic layer 120 passes through the first electrode 110, passes through the substrate 100, and is emitted from the second surface 104 of the substrate 100. .. Even if the light emitted from the organic layer 120 is directed toward the second electrode 130, this light is reflected by the second electrode 130 toward the first electrode 110.

In the example shown in FIG. 5, the width of the second electrode 130 is wider than the width of the light emitting unit 142. In particular, the end portion of the second electrode 130 is located outside the end portion of the light emitting portion 142 by a distance Δ.

The light-shielding member, particularly the second electrode 130 in the example shown in FIG. 5, does not overlap with the light-transmitting portion 144. Therefore, as shown by the white arrow in FIG. 5, light from the outside can pass through the translucent portion 144.

FIG. 6 is a diagram for explaining a light emitting region 140 according to the first example of the first embodiment.

The plurality of light emitting units 142 emit light in the first color. That is, a single light (light of the first color) is emitted from the light emitting region 140. The first color is, for example, red. When the light emitting region 140 is used as an HMSL, the first color can be red.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 6 (the first stage of the first embodiment of FIG. 6), the widths of the plurality of translucent portions 144 differ depending on the positions in the light emitting region 140. In particular, in the example shown in FIG. 6, the translucent portion 144 having the first width (first translucent portion) and the translucent portion 144 having the second width wider than the first width (second translucent portion) are alternately arranged. They are lined up. In this way, the widths of the plurality of translucent portions 144 are periodically changed in the arrangement direction of the plurality of light emitting portions 142 and the plurality of translucent portions 144.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 6 (the first stage of the first embodiment of FIG. 6), the widths of the plurality of light emitting units 142 are substantially the same as each other, and in one example, each light emission is carried out. The width of the unit 142 is in the range of 95% or more and 105% or less of the average width of the plurality of light emitting units 142. Since the widths of the plurality of light emitting units 142 are substantially the same as each other, the variation in luminance within the light emitting region 140 can be made inconspicuous.

In the pattern of the plurality of light emitting portions 142 in the light emitting region 140 in Comparative Example 1 of FIG. 6 (the first stage of Comparative Example 1 of FIG. 6), the width of the plurality of translucent portions 144 is any position in the light emitting region 140. The width of the plurality of light emitting units 142 is the same at any position in the light emitting region 140.

In FIG. 6, the relative magnitude of the angle θc with respect to the angle θp (for example, FIG. 1) is the same in the first embodiment and the first comparative example. That is, in the first embodiment and the first comparative example, the width of the light emitting member 10 (light emitting region 140), the distance between the light emitting member 10 and the translucent member 20, and the distance between the position P and the light emitting member 10 are common. ing.

7 shows the spectrum (upper part of FIG. 7) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 6 (the second stage of Comparative Example 1 of FIG. 6) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 7) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 6) at the position P of.

The spatial frequency on the horizontal axis in each spectrum of FIG. 7 is the wave number of each spectrum with respect to the total width of the pattern.

In the pattern of the position P in Comparative Example 1 of FIG. 6 (the second stage of Comparative Example 1 of FIG. 6), the cycle of the dark part (D), the bright part (B), and the dark part (D) is repeated four times. I can say. This is also observed from the fact that a peak appears at the spatial frequency 4 of the spectrum (upper part of FIG. 7) in Comparative Example 1 of FIG.

From the results of FIGS. 6 and 7, it can be said that the moire component that is conspicuous for human vision is a component at a low spatial frequency (for example, about 1 or more and 10 or less). On the other hand, in the component at a high spatial frequency (for example, about 50 or more), the distance between light and dark of the moiré becomes short, and it becomes difficult to distinguish the moiré by human vision. Therefore, it can be said that the component at high spatial frequency is a component that is inconspicuous to human vision.

In FIG. 7, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 7), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 7). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 7), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 7). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 6) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 6).

In the spectrum of the first embodiment of FIG. 7, peaks appear at the spatial frequency 100 and its surroundings, but the components at the high spatial frequency can be said to be inconspicuous to human vision as described above. Therefore, it can be said that the moire of the first embodiment (second stage of the first embodiment of FIG. 6) is not conspicuous due to the spatial frequency 100 and the peaks around it in the spectrum of the first embodiment of FIG. 7 (lower stage of FIG. 7). ..

FIG. 8 is a diagram for explaining the light emitting region 140 according to the second example of the first embodiment. The example shown in FIG. 8 is the same as the example shown in FIG. 6, except for the following points.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 8 (first stage of the first embodiment of FIG. 8), the widths of the plurality of translucent portions 144 differ depending on the positions in the light emitting region 140. In particular, in the example shown in FIG. 8, the translucent portion 144 having the first width, the translucent portion 144 having the second width equal to the first width, the translucent portion 144 having the third width narrower than the first width, and the first The translucent portions 144 having a fourth width wider than one width are repeatedly arranged. In this way, the widths of the plurality of translucent portions 144 are periodically changed in the arrangement direction of the plurality of light emitting portions 142 and the plurality of translucent portions 144.

9 shows the spectrum (upper part of FIG. 9) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 8 (second stage of Comparative Example 1 of FIG. 8) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 9) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 8) at the position P of.

In FIG. 9, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 9), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 9). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 9), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 9). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 8) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 8).

In the spectrum of the first embodiment of FIG. 9, peaks appear at the spatial frequency 50 and its periphery, the spatial frequency 100 and its periphery, and the spatial frequency 150 and its periphery, but the components at the high spatial frequency are as described above. It can be said that it is an inconspicuous component for human vision. Therefore, the moire of the first embodiment (second stage of the first embodiment of FIG. 8) is the spatial frequency 50 and its surroundings, the spatial frequency 100 and its surroundings, and the space in the spectrum of the first embodiment of FIG. 9 (lower stage of FIG. 9). It can be said that it is not noticeable due to the peak at the frequency 150 and its surroundings.

FIG. 10 is a diagram for explaining a light emitting region 140 according to a third example of the first embodiment. The example shown in FIG. 10 is the same as the example shown in FIG. 8 except for the following points.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 10 (first stage of the first embodiment of FIG. 10), the widths of the plurality of translucent portions 144 differ depending on the positions in the light emitting region 140. In particular, in the example shown in FIG. 10, the translucent portion 144 having the first width, the translucent portion 144 having the second width equal to the first width, the translucent portion 144 having the third width equal to the first width, and the first A translucent portion 144 having a fourth width equal to the width, a translucent portion 144 having a fifth width equal to the first width, and a translucent portion 144 having a sixth width wider than the first width are repeatedly arranged. In this way, the widths of the plurality of translucent portions 144 are periodically changed in the arrangement direction of the plurality of light emitting portions 142 and the plurality of translucent portions 144.

FIG. 11 shows a spectrum (upper part of FIG. 11) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 10 (second stage of Comparative Example 1 of FIG. 10) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 11) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 10) at the position P of.

In FIG. 11, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 11), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 11). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 11), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 11). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 10) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 10).

In the spectrum of the first embodiment of FIG. 11, peaks appear at the spatial frequency 33 and its periphery, the spatial frequency 66 and its periphery, the spatial frequency 99 and its periphery, the spatial frequency 132 and its periphery, and the spatial frequency 165 and its periphery. However, as described above, the component at high spatial frequency can be said to be a component that is inconspicuous to human vision. Therefore, the moire of the first embodiment (second stage of the first embodiment of FIG. 10) is the spatial frequency 33 and its surroundings, the spatial frequency 66 and its surroundings, and the space in the spectrum of the first embodiment of FIG. 11 (lower stage of FIG. 11). It can be said that the peaks of frequency 99 and its surroundings, spatial frequency 132 and its surroundings, and spatial frequency 165 and its surroundings do not stand out.

FIG. 12 is a diagram for explaining a light emitting region 140 according to the fourth example of the first embodiment. The example shown in FIG. 112 is the same as the example shown in FIG. 8 except for the following points.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 12 (first stage of the first embodiment of FIG. 12), the widths of the plurality of translucent portions 144 differ depending on the positions in the light emitting region 140. In particular, in the example shown in FIG. 12, the translucent portion 144 having the first width, the translucent portion 144 having the second width equal to the first width, the translucent portion 144 having the third width equal to the first width, and the first The translucent portions 144 having a fourth width wider than the width are repeatedly arranged. In this way, the widths of the plurality of translucent portions 144 are periodically changed in the arrangement direction of the plurality of light emitting portions 142 and the plurality of translucent portions 144.

FIG. 13 shows a spectrum (upper part of FIG. 13) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 12 (second stage of Comparative Example 1 of FIG. 12) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 13) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 12) at the position P of.

In FIG. 13, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 13), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 13). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 13), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 13). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 12) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 12).

In the spectrum of the first embodiment of FIG. 13, peaks appear at the spatial frequency 50 and its periphery, the spatial frequency 100 and its periphery, and the spatial frequency 150 and its periphery, but the components at the high spatial frequency are as described above. It can be said that it is an inconspicuous component for human vision. Therefore, the moire of the first embodiment (second stage of the first embodiment of FIG. 12) is the spatial frequency 50 and its surroundings, the spatial frequency 100 and its surroundings, and the space in the spectrum of the first embodiment of FIG. 13 (lower stage of FIG. 13). It can be said that it is not noticeable due to the peak at the frequency 150 and its surroundings.

FIG. 14 is a diagram for explaining a light emitting region 140 according to the fifth example of the first embodiment. The example shown in FIG. 14 is the same as the example shown in FIG. 8 except for the following points.

In the pattern of the light emitting region 140 in the first embodiment of FIG. 14 (first stage of the first embodiment of FIG. 14), the widths of the plurality of light emitting portions 142 differ depending on the positions in the light emitting region 140. In particular, in the example shown in FIG. 14, a light emitting unit 142 (first light emitting unit) having a first width and a light emitting unit 142 (second light emitting unit) having a second width narrower than the first width are alternately arranged. In this way, the widths of the plurality of light emitting units 142 are periodically changed in the arrangement direction of the plurality of light emitting units 142 and the plurality of translucent units 144.

In the first embodiment of FIG. 14, the plurality of light emitting units 142 are arranged at equal intervals. In another example, the width of the plurality of translucent portions 144 may be constant regardless of the position in the light emitting region 140.

The distance Δ shown in FIG. 5 may differ depending on the width of the light emitting unit 142. In particular, the distance Δ may be larger as the width of the light emitting unit 142 is wider. For example, the distance Δ of the above-mentioned second light emitting unit (light emitting unit narrower than the above-mentioned first light emitting unit) may be smaller than the distance Δ of the above-mentioned first light emitting unit.

The distance Δ shown in FIG. 5 may be substantially equal regardless of the width of the light emitting unit 142. For example, the distance Δ of each light emitting unit 142 can be 95% or more and 105% or less of the average of the distance Δ of the plurality of light emitting units 142.

FIG. 15 shows the spectrum (upper part of FIG. 15) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 14 (second stage of Comparative Example 1 of FIG. 14) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 15) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 14) at the position P of.

In FIG. 15, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 15), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 15). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 15), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 15). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 14) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 14).

In the spectrum of the first embodiment of FIG. 15, peaks appear in the spatial frequency 100 and its surroundings, but it can be said that the components in the high spatial frequency are inconspicuous to human vision as described above. Therefore, it can be said that the moire of the first embodiment (second stage of the first embodiment of FIG. 14) is not conspicuous due to the spatial frequency 100 and the peaks around it in the spectrum of the first embodiment of FIG. 15 (lower stage of FIG. 15). ..

FIG. 16 is a diagram for explaining a light emitting region 140 according to the sixth example of the first embodiment. The example shown in FIG. 16 is the same as the example shown in FIG. 14, except for the following points.

In the pattern of the plurality of light emitting units 142 in the light emitting region 140 in the first embodiment of FIG. 16 (first stage of the first embodiment of FIG. 16), the widths of the plurality of light emitting units 142 differ depending on the positions in the light emitting region 140. There is. In particular, in the example shown in FIG. 16, the light emitting unit 142 having the first width, the light emitting unit 142 having the second width equal to the first width, the light emitting unit 142 having the third width narrower than the first width, and the first width Light emitting units 142 having a wide fourth width are repeatedly arranged. In this way, the widths of the plurality of light emitting units 142 are periodically changed in the arrangement direction of the plurality of light emitting units 142 and the plurality of translucent units 144.

FIG. 17 shows the spectrum (upper part of FIG. 17) obtained by Fourier transforming the pattern at the position P of Comparative Example 1 of FIG. 16 (second stage of Comparative Example 1 of FIG. 16) and the first embodiment of FIG. It is a figure which shows the spectrum (the lower part of FIG. 17) obtained by Fourier transforming the pattern (the second stage of Embodiment 1 of FIG. 16) at the position P of.

In FIG. 17, the low spatial frequency of the spectrum of the first embodiment (lower part of FIG. 17), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 17). Is larger than the low spatial frequency of the spectrum of Comparative Example 1 (upper part of FIG. 17), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 4 circled by the broken line in FIG. 17). It's getting smaller. Therefore, it can be said that the moire of the first embodiment (the second stage of the first embodiment of FIG. 16) is less conspicuous than the moire of the comparative example 1 (the second stage of the comparative example 1 of FIG. 16).

In the spectrum of the first embodiment of FIG. 17, peaks appear at the spatial frequency 50 and its periphery, the spatial frequency 100 and its periphery, and the spatial frequency 150 and its periphery, but the components at the high spatial frequency are as described above. It can be said that it is an inconspicuous component for human vision. Therefore, the moire of the first embodiment (second stage of the first embodiment of FIG. 16) is the spatial frequency 50 and its surroundings, the spatial frequency 100 and its surroundings, and the space in the spectrum of the first embodiment of FIG. 17 (lower stage of FIG. 17). It can be said that it is not noticeable due to the peak at the frequency 150 and its surroundings.

FIG. 18 is a diagram for explaining a first example of the details of the light emitting region 140 shown in FIG. 10 or FIG.

The light emitting region 140 has a plurality of partial light emitting regions 140a. Each partial light emitting region 140a has a plurality of light emitting portions 142 and a plurality of translucent portions 144. The plurality of partial light emitting regions 140a are provided on a common substrate (substrate 100).

The light emitting region 140 has a translucent portion 144 (translucent portion 144a) between adjacent light emitting portions 142 in the partial light emitting region 140a, and a translucent portion 144 (translucent portion 144) between adjacent partial light emitting regions 140a. It has a light unit 144b). The width of the translucent portion 144b is wider than the width of the translucent portion 144a. Therefore, the width of the plurality of translucent portions 144 differs depending on the position in the light emitting region 140. In particular, in the example shown in FIG. 18, the widths of the plurality of translucent portions 144 change periodically depending on the positions in the light emitting region 140, and specifically, specifically, the light emitting portions 142 adjacent to each other in the partial light emitting region 140a. The width of the translucent portion 144a is between the two, and the width of the translucent portion 144b is between the adjacent partial light emitting regions 140a.

FIG. 19 is a diagram for explaining a second example of the details of the light emitting region 140 shown in FIG. 10 or FIG. The example shown in FIG. 19 is the same as the example shown in FIG. 18, except for the following points.

The light emitting member 10 has a plurality of substrates 100 and a plurality of partial light emitting regions 140a. The plurality of partial light emitting regions 140a are provided on the plurality of substrates 100, respectively. That is, the light emitting region 140 is located over the plurality of substrates 100. Also in the example shown in FIG. 19, the region between the adjacent partial light emitting regions 140a is the translucent portion 144b.

As described above, according to the present embodiment, the moire that may be caused by the pattern of the plurality of light emitting units 142 in the light emitting region 140 and the pattern of the light reflected on the translucent member 20 by the light from the plurality of light emitting units 142 is made inconspicuous. Can be done.

(Embodiment 2)
FIG. 20 is a diagram for explaining the light emitting device 30 according to the first example of the second embodiment. The light emitting device 30 shown in FIG. 20 is the same as the light emitting device 30 according to the first embodiment, except for the following points.

The light emitting device 30 includes a light emitting member 10 and a translucent member 20.

The light emitting member 10 shown in FIG. 20 is the same as the light emitting member 10 shown in FIGS. 3 to 5. In particular, the light emitting member 10 is positioned so that the second surface 104 of the substrate 100 faces the translucent member 20, and the plurality of light emitting portions 142 are located on the first surface 102 side of the substrate 100.

The translucent member 20 is convexly curved toward the side opposite to the light emitting member 10. The light emitting member 10 has a flat shape. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position, and specifically, it increases toward the center of the translucent member 20. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₂₀₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. In particular example shown in FIG. 20, the distance _{d A1} between points _{A 1} and the light emitting member 10 is larger than the distance _{d A2} between points _{A 2} and the light emitting member 10.

In particular, in the example shown in FIG. 20, the translucent member 20 is curved along an arc having a center C on a straight line (y-axis in FIG. 20) perpendicularly intersecting the light emitting member 10. The light emitting member 10 can be a high mount stop lamp attached to the rear glass of a moving body (for example, an automobile). In the extending direction of the straight line (the y-axis direction in FIG. 20), the driver's seat D of the moving body is located farther from the light emitting member 10 than the center C of the arc.

FIG. 21 is a diagram for explaining an example of moire by the light emitting device 30 shown in FIG. 20.

In the second embodiment, as described above, the translucent member 20 is curved. Further, in the second embodiment, the plurality of light emitting units 142 are arranged at equal intervals, the widths of the plurality of light emitting units 142 are substantially the same as each other, and the widths of the plurality of light emitting units 144 are set. They are virtually identical to each other.

Comparative Example 2 is the same as that of the second embodiment except that the translucent member 20 has a flat shape.

FIG. 22 shows the spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 21 (upper part of FIG. 22) and the pattern obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 21. It is a figure which shows the spectrum (lower part of FIG. 22).

In the pattern of the position P in Comparative Example 2 of FIG. 21, it can be said that the cycle of the bright portion (B), the dark portion (D) and the bright portion (B) is repeated once. This is also observed from the fact that the peak appears at the spatial frequency 1 of the spectrum (upper part of FIG. 22) in Comparative Example 2 of FIG.

In FIG. 22, the low spatial frequency of the spectrum of the second embodiment (lower part of FIG. 22), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 1 circled by the broken line in FIG. 22). Is larger than the low spatial frequency of the spectrum of Comparative Example 2 (upper part of FIG. 22), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of spatial frequency 1 circled by the broken line in FIG. 22). It's getting smaller. Therefore, it can be said that the moiré of the second embodiment (FIG. 21) is less conspicuous than the moiré of Comparative Example 2 (FIG. 21).

FIG. 23 is a diagram for explaining the reason why the moire becomes inconspicuous in the second embodiment.

The four spectra of FIG. 23 are obtained by Fourier transforming the pattern at position P when both the light emitting member 10 and the translucent member 20 have a flat shape. In both spectra, the distance between the position P and the translucent member 20 is common. In the spectra of the first stage, the second stage, the third stage, and the fourth stage, the distance d between the light emitting member 10 and the translucent member 20 is Δd, 2Δd, 4Δd, and 8Δd, respectively.

Each spectrum has peaks at different spatial frequencies at low spatial frequencies. Specifically, the spectrum of the first stage has a peak at the spatial frequency 1, the spectrum of the second stage has a peak at the spatial frequency 2, and the spectrum of the third stage has a peak at the spatial frequency 4. The spectrum of the fourth stage has a peak at the spatial frequency 8.

The results shown in FIG. 23 suggest that the peak position at a low spatial frequency can be controlled by the distance d between the light emitting member 10 and the translucent member 20. Therefore, it can be said that the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position, so that the peaks are prevented from being unevenly distributed at a specific spatial frequency, and the peaks can be dispersed. In this way, it can be said that the moire becomes inconspicuous in the second embodiment.

FIG. 24 is a diagram for explaining the light emitting device 30 according to the second example of the second embodiment. The light emitting device 30 shown in FIG. 24 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The translucent member 20 is convexly curved toward the light emitting member 10. The light emitting member 10 has a flat shape. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position, and specifically, it becomes smaller toward the center of the translucent member 20. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₂₄₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. 24. In particular example shown in FIG. 24, the distance _{d A1} between points _{A 1} and the light emitting member 10 is smaller than the distance _{d A2} between points _{A 2} and the light emitting member 10.

FIG. 25 is a diagram for explaining an example of moire by the light emitting device 30 shown in FIG. 24. FIG. 26 is obtained by Fourier transforming the spectrum (upper part of FIG. 26) obtained by Fourier transforming the pattern at the position P of Comparative Example 2 of FIG. 25 and the pattern at the position P of the second embodiment of FIG. 25. It is a figure which shows the spectrum (lower part of FIG. 26). The examples shown in FIGS. 25 and 26 are similar to the examples shown in FIGS. 21 and 22 except for the following points.

In FIG. 26, the low spatial frequency of the spectrum of the second embodiment (lower part of FIG. 26), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 1 circled by the broken line in FIG. 26). Is larger than the low spatial frequency of the spectrum of Comparative Example 2 (upper part of FIG. 26), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of spatial frequency 1 circled by the broken line in FIG. 26). It's getting smaller. Therefore, it can be said that the moire of the second embodiment (FIG. 25) is less conspicuous than the moire of the comparative example 2 (FIG. 25).

FIG. 27 is a diagram for explaining the light emitting device 30 according to the third example of the second embodiment. The light emitting device 30 shown in FIG. 27 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The translucent member 20 has a shape along a wave that vibrates in a direction toward the light emitting member 10 and a direction away from the light emitting member 10 (particularly, in the example shown in FIG. 27, a direction perpendicular to the light emitting member 10). , In the example shown in FIG. 27, it is curved along a sine wave. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₂₇₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. 27. In particular example shown in FIG. 27, the distance _{d A1} between points _{A 1} and the light emitting member 10 is larger than the distance _{d A2} between points _{A 2} and the light emitting member 10.

FIG. 28 is a diagram for explaining an example of moire by the light emitting device 30 shown in FIG. 27. FIG. 29 shows the spectrum obtained by Fourier transforming the pattern at the position P of Comparative Example 2 in FIG. 28 (upper part of FIG. 29) and the pattern obtained by Fourier transforming the pattern at the position P of the second embodiment of FIG. 28. It is a figure which shows the spectrum (lower part of FIG. 29). The examples shown in FIGS. 28 and 29 are similar to the examples shown in FIGS. 21 and 22 except for the following points.

In FIG. 29, the low spatial frequency of the spectrum of the second embodiment (lower part of FIG. 29), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 1 circled by the broken line in FIG. 29). Is larger than the low spatial frequency of the spectrum of Comparative Example 2 (upper part of FIG. 29), particularly the peak magnitude at 1 or more and 10 or less (the magnitude of the component of spatial frequency 1 circled by the broken line in FIG. 29). It's getting smaller. Therefore, it can be said that the moiré of the second embodiment (FIG. 28) is less conspicuous than the moiré of Comparative Example 2 (FIG. 28).

FIG. 30 is a diagram for explaining the light emitting device 30 according to the fourth example of the second embodiment. The light emitting device 30 shown in FIG. 30 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The translucent member 20 has a shape along a wave that vibrates in a direction toward the light emitting member 10 and a direction away from the light emitting member 10 (particularly, in the example shown in FIG. 30, a direction perpendicular to the light emitting member 10). In the example shown in FIG. 30, it is bent in a triangular wave shape. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₃₀₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. In particular example shown in FIG. 30, the distance _{d A1} between points _{A 1} and the light emitting member 10 is larger than the distance _{d A2} between points _{A 2} and the light emitting member 10.

FIG. 31 is a diagram for explaining an example of moire by the light emitting device 30 shown in FIG. FIG. 32 is obtained by Fourier transforming the spectrum at the position P of Comparative Example 2 of FIG. 31 (upper part of FIG. 32) and the pattern at the position P of the second embodiment of FIG. 31. It is a figure which shows the spectrum (lower part of FIG. 32). The examples shown in FIGS. 31 and 32 are the same as the examples shown in FIGS. 21 and 22 except for the following points.

In FIG. 32, the low spatial frequency of the spectrum of the second embodiment (lower part of FIG. 32), particularly the magnitude of the peak at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 1 circled by the broken line in FIG. 32). Is larger than the low spatial frequency of the spectrum of Comparative Example 2 (upper part of FIG. 32), particularly the peak size at 1 or more and 10 or less (the magnitude of the component of the spatial frequency 1 circled by the broken line in FIG. 32). It's getting smaller. Therefore, it can be said that the moiré of the second embodiment (FIG. 31) is less conspicuous than the moiré of Comparative Example 2 (FIG. 31).

FIG. 33 is a diagram for explaining the light emitting device 30 according to the fifth example of the second embodiment. The light emitting device 30 shown in FIG. 33 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The light emitting member 10 is convexly curved toward the translucent member 20 side. The translucent member 20 has a flat shape. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₃₃₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. 33. In particular example shown in FIG. 33, the distance _{d A1} between points _{A 1} and the light emitting member 10 is smaller than the distance _{d A2} between points _{A 2} and the light emitting member 10.

In the example shown in FIG. 33, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. Therefore, the moire becomes inconspicuous for the same reason as described with reference to FIG. 23.

FIG. 34 is a diagram for explaining the light emitting device 30 according to the sixth example of the second embodiment. The light emitting device 30 shown in FIG. 34 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The light emitting member 10 is convexly curved toward the opposite side of the translucent member 20. The translucent member 20 has a flat shape. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₃₄₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. In particular example shown in FIG. 34, the distance _{d A1} between points _{A 1} and the light emitting member 10 is larger than the distance _{d A2} between points _{A 2} and the light emitting member 10.

In the example shown in FIG. 34, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. Therefore, the moire becomes inconspicuous for the same reason as described with reference to FIG. 23.

FIG. 35 is a diagram for explaining the light emitting device 30 according to the seventh example of the second embodiment. The light emitting device 30 shown in FIG. 35 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The light emitting member 10 has a shape along a wave that vibrates in a direction toward the translucent member 20 and a direction away from the translucent member 20 (particularly, in the example shown in FIG. 35, a direction perpendicular to the translucent member 20). In the example shown in FIG. 35, it is curved along a sine wave. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₃₅₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. In particular example shown in FIG. 35, the distance _{d A1} between points _{A 1} and the light emitting member 10 is smaller than the distance _{d A2} between points _{A 2} and the light emitting member 10.

In the example shown in FIG. 35, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. Therefore, the moire becomes inconspicuous for the same reason as described with reference to FIG. 23.

FIG. 36 is a diagram for explaining the light emitting device 30 according to the eighth example of the second embodiment. The light emitting device 30 shown in FIG. 36 is the same as the light emitting device 30 shown in FIG. 20, except for the following points.

The light emitting member 10 has a shape along a wave that vibrates in a direction toward the translucent member 20 and a direction away from the translucent member 20 (particularly, in the example shown in FIG. 36, a direction perpendicular to the translucent member 20). In the example shown in FIG. 36, it is bent along a triangular wave. Therefore, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. In this manner, the translucent member 20 has a first portion from the light emitting member 10 away first distance (for example, the point A ₁ in FIG. ₃₆₎ and the first distance is different from the second distance apart second portion (e.g. , Has point A ₂ ) in FIG. In particular example shown in FIG. 36, the distance _{d A1} between points _{A 1} and the light emitting member 10 is smaller than the distance _{d A2} between points _{A 2} and the light emitting member 10.

In the example shown in FIG. 36, the distance d between the light emitting member 10 and the translucent member 20 differs depending on the position. Therefore, the moire becomes inconspicuous for the same reason as described with reference to FIG. 23.

As described above, according to the present embodiment, the moire that may be caused by the pattern of the plurality of light emitting units 142 in the light emitting region 140 and the pattern of the light reflected on the translucent member 20 by the light from the plurality of light emitting units 142 is made inconspicuous. Can be done.

Although the embodiments and examples have been described above with reference to the drawings, these are examples of the present invention, and various configurations other than the above can be adopted.

10 Light emitting member 20 Translucent member 22 Surface 24 Surface 30 Light emitting device 100 Substrate 102 First surface 104 Second surface 110 First electrode 120 Organic layer 130 Second electrode 140 Light emitting area 140a Partial light emitting area 142 Light emitting part 144 Translucent part 144a Translucent part 144b Translucent part

Claims (1)

A plurality of light emitting parts including the first light emitting part and the second light emitting part adjacent to each other and emitting light in the first color, and the first translucent part and the first light emitting part located between the first light emitting part and the second light emitting part. A light emitting region including a second translucent portion located on the opposite side of the first translucent portion of the light emitting portion, and a plurality of translucent portions located between adjacent light emitting portions.
A translucent member located on the light emitting surface side of the light emitting region and separated from the light emitting region.
Equipped with
A light emitting device in which the first light emitting unit and the second light emitting unit have different widths from each other, or the first light emitting unit and the second light emitting unit have different widths from each other.

Images