JP5540727B2 - Light emitting device - Google Patents

Description

  The present invention relates to a light emitting device.

  Examples of the light emitting device include a light emitting device using organic EL (electroluminescence). In such a light emitting device, there is a problem that the chromaticity of the emitted light is changed due to a change in the viewing angle of the observer of the light emitting device (change in the position of the eyes of the observer).

In order to solve such a problem, for example, Patent Document 1 discloses that the optical distance from the light emitting position to the reflective layer is L _1, and the optical distance from the reflective interface at the element end on the second electrode side to the reflective layer. Where L ₂ is L _2, and the center wavelength of the wavelength range of the outgoing light to be extracted is λ, L ₁ is the optical distance that the light of wavelength λ is strengthened by interference, and L ₂ is the optical that the light of wavelength λ is weakened by interference A technique for distance is disclosed.

JP 2006-244713 A

  However, since the technique described in Patent Document 1 uses light interference, the chromaticity of light emitted from the light emitting device when the light emitting region of the light emitting device is viewed from the front is emitted from the original light emitting device. May be different from the chromaticity of the light.

  The present invention has been made in view of the above points, and provides a light-emitting device that reduces a change in chromaticity due to a change in viewing angle while reducing a change in chromaticity when the light-emitting region of the light-emitting device is viewed from the front. The purpose is to provide.

In order to solve the above problems, a light-emitting device according to the present invention includes:
A light emitting unit that emits light from one or more light emitting regions;
Covering the light emitting unit, and including a transmission unit that transmits light emitted from the one or more light emitting regions,
The transmissive portion includes a first region that overlaps the one or more light emitting regions and a second region that is located outside the first region in the transmissive portion when viewed from the normal direction of the light emitting surface of the light emitting region. Prepared,
Said second region, said Ri darker colored transparent der than the first region, and the light transmittance in a short wavelength range higher than the light transmittance of the high-wavelength region.

  According to the light emitting device of the present invention, the change of the chromaticity due to the viewing angle at the time of light emission is reduced, and it is reduced or prevented that the chromaticity at the front is different from the original chromaticity.

The figure for demonstrating the positional relationship of the component of the light-emitting device which concerns on 1st Embodiment of this invention. The figure for demonstrating the positional relationship of the component of the light-emitting device which concerns on 1st Embodiment of this invention. The figure for demonstrating the positional relationship of the component of the light-emitting device which concerns on 1st Embodiment of this invention. FIG. 4 is a schematic sectional view taken along line XX in FIG. 3. The figure which shows the transmittance | permeability spectrum of the chromaticity correction board of the light-emitting device which concerns on 1st Embodiment of this invention. The figure which shows the spectrum of light with and without the chromaticity correction board of the light-emitting device which concerns on 1st Embodiment of this invention. The figure which shows the chromaticity of light with and without the chromaticity correction board of the light-emitting device which concerns on 1st Embodiment of this invention. The figure which shows the relationship between the chromaticity correction board of the light-emitting device which concerns on 2nd Embodiment of this invention, and a color density. The figure which shows the transmittance | permeability of the chromaticity correction board of the light-emitting device which concerns on 2nd Embodiment of this invention. The schematic sectional drawing of the light-emitting device which concerns on the modification of embodiment of this invention.

  Embodiments according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by the following embodiment and drawing. It goes without saying that changes (including deletion of components) can be added to the contents of the following embodiments and drawings. In the drawings, when a plurality of the same constituent elements are drawn, only some of them may be denoted by reference numerals.

  Further, in the following description, in order to facilitate understanding of the present invention, descriptions of known unimportant technical matters are appropriately omitted. In the following, light refers to visible light.

(Embodiment 1)
1 to 4, the light emitting device 100 includes a substrate 101, a first electrode 102a, a lead line 102b, a light emitting layer 103, a second electrode 104a, a lead line 104b, a sealing portion 105, An insulating film 109, a circularly polarizing plate 111, and a chromaticity correction plate (transmission portion) 110 are provided. FIG. 1 is a diagram illustrating a positional relationship among the substrate 101, the first electrode 102a, the lead line 102b, the light emitting layer 103, the second electrode 104a, the lead line 104b, and the insulating film 109. FIG. 2 is a diagram illustrating a positional relationship among the substrate 101, the first electrode 102a, the lead line 102b, and the insulating film 109. FIG. 3 is a plan view illustrating a part of the light emitting layer 103 exposed. FIG. 4 is a cross-sectional view of the light emitting device 100 in FIG. In the figure, each element covered by the insulating film 109, the circularly polarizing plate 111, and the like is appropriately drawn through.

  The substrate 101 is a transparent substrate made of a glass substrate or the like.

  The first electrode 102a is a transparent electrode formed in a predetermined shape (here, a belt shape) on the surface of the substrate 101. The first electrode 102a is connected to a lead wire 102b having a predetermined shape. The lead wire 102b is a conductive wire, and is used to electrically connect the first electrode 102a and the outside of the light emitting device 100. A plurality of first electrodes 102a and lead lines 102b are formed. The first electrode 102a and the lead wire 102b are formed of, for example, ITO (indium tin oxide). For example, an electrode layer is formed on the substrate 101 by sputtering, and this electrode layer is patterned into a predetermined shape by photolithography. Thus, the first electrode 102a and the lead line 102b are formed on the substrate 101 in a predetermined shape. Here, the first electrode 102a becomes an anode.

  The insulating film 109 is formed on the substrate 101 on which the first electrode 102a and the lead line 102b are formed. The insulating film 109 insulates the first electrode 102 a and the second electrode 104 a and defines the shape of the light emitting layer 103. The insulating film 109 is formed so as to cover a part of the lead line 102b, a part of the first electrode 102a, and the like. The insulating film 109 has a rectangular outer shape and is formed so that a part of the lead line 102b is exposed. The insulating film 109 has an opening 109a, and the first electrode 102a is exposed through the opening 109a. For example, the insulating film 109 is formed by spin coating or the like of a polyimide-based electrically insulating material.

The light emitting layer 103 is formed in the opening 109 a of the insulating film 109. The light emitting layer 103 is made of, for example, a laminate including a hole transport layer, a light emitting functional layer, and an electron transport layer. For example, these layers are sequentially stacked in the order of a hole transport layer, a light emitting functional layer, and an electron transport layer from the first electrode 102a side. The hole transport layer bridges the first electrode 102a and the light emitting functional layer for holes injected from the first electrode 102a into the light emitting layer. The electron transport layer bridges the second electrode 104a and the light emitting functional layer for electrons injected into the light emitting functional layer from a second electrode 104a (cathode) described later. The light emitting functional layer is a layer that actually emits light when the holes and electrons are injected. The hole transport layer, the light emitting functional layer, and the electron transport layer are formed by, for example, a vacuum deposition method. The hole transport layer is formed of, for example, α-NPD, the light emitting functional layer is formed of, for example, Alq ₃ , and the electron transport layer is formed of, for example, BCP. The light emitting layer 103 emits white light, for example. The light emitting layer 103 is formed in a band shape, and the longitudinal direction is orthogonal to the longitudinal direction of the first electrode 102a. A plurality of light emitting layers 103 are formed.

  The second electrode 104 a is an electrode formed in a predetermined shape so as to cover the light emitting layer 103, and reflects light emitted from the light emitting layer 103 to the substrate 101 side. A part of the second electrode 104 a is formed in the opening 109 a and the other part is formed on the insulating film 109. The 2nd electrode 104a is formed in strip | belt shape, and the elongate direction is orthogonal to the elongate direction of the 1st electrode 102a. The second electrode 104a is connected to a lead wire 104b having a predetermined shape. The lead wire 104b is a conductive wire and is used to electrically connect the second electrode 104a and the outside of the light emitting device 100. A part of the lead line 104b is formed on the insulating film 109, and the other part is formed on the substrate 101 on which the insulating film 109 is not formed. A plurality of second electrodes 104a and lead lines 104b are formed. The second electrode 104a and the lead wire 104b are made of aluminum, for example. The second electrode 104a and the lead line 104b are formed by a vacuum evaporation method. The second electrode 104a becomes a cathode.

  The sealing portion 105 covers the second electrode 104a, the insulating film 109, and the like, and seals and protects each element such as the second electrode 104a formed on the substrate 101. The sealing portion 105 is formed in the same outer shape (rectangular shape) as the insulating film 109, and is formed so that part of the lead lines 102b and 104b is exposed. The sealing unit 105 includes a sealing plate 105a and a sealing material 105b. The sealing plate 105a is a sealing substrate composed of a glass substrate or the like. The sealing material 105b brings the sealing plate 105a into close contact with the substrate 101 on which each element such as the second electrode 104a is formed. The sealing material 105b is, for example, an ultraviolet curable epoxy adhesive.

  The circularly polarizing plate 111 converts the polarization direction of incident light into circularly polarized light. The circularly polarizing plate 111 is disposed by being stuck on the back surface of the substrate 101 (the surface opposite to the surface on which the light emitting layer 103 and the like are formed).

  The configuration described above is a basic configuration of the light emitting device 100, and known configurations can be adopted as these configurations. When viewed from the normal direction of the back surface of the substrate 101 (as viewed from the lower side in FIG. 4), the region of the light emitting layer 103 where the first electrode 102a and the second electrode 104a intersect becomes a light emitting region. When a voltage is applied to the arbitrary first electrode 102a and the second electrode 104a, a region in the light emitting layer 103 where the first electrode 102a and the second electrode 104a intersect with each other emits light. Light emitted from the light emitting layer 103 by light emission passes through the first electrode 102a, the substrate 101, the circularly polarizing plate 111, and the like, and enters the chromaticity correction plate 110. The light incident on the chromaticity correction plate 110 passes through the chromaticity correction plate 110 and is emitted to the outside (see the arrow in FIG. 4). Note that part of light emitted from the light emitting layer 103 is appropriately reflected by the second electrode 104a, passes through the substrate 101, the circularly polarizing plate 111, and the like, and enters the chromaticity correction plate. Each region where the first electrode 102a and the second electrode 104a intersect when viewed from the normal direction of the back surface of the substrate 101 is a pixel A (region surrounded by a dotted line) which is the minimum unit for controlling light emission / non-light emission. . The first electrode 102a and the second electrode 104a are connected to a driver (not shown) outside the light emitting device 100 via lead lines 102b and 104b. The driver applies a voltage to the predetermined first electrode 102a and the second electrode 104a based on predetermined data. Thereby, the pixel A at a desired position emits light. Here, the first electrode 102a, the light emitting layer 103, and the second electrode 104a constitute a light emitting unit. Further, the pixel A is a light emitting region of the light emitting unit. Further, the normal direction of the back surface of the substrate 101 is the normal direction of the light emitting surface of the light emitting region of the light emitting unit (here, the surface of the first electrode 102a on the substrate 101 side).

  The chromaticity correction plate 110 corrects the chromaticity of the light emitted from the light emitting layer 103. The chromaticity correction plate 110 has a first area 110a and a second area 110b. When viewed from the normal direction of the back surface of the substrate 101, a portion covering a plurality of light emitting regions (a portion overlapping with the light emitting regions) becomes the first region 110a. In particular, here, the first region 110a is a portion overlapping a region where a plurality of light emitting regions are gathered. Further, when viewed from the normal direction of the back surface of the substrate 101, the second region 110b is adjacent to the first region 110a (light emitting region), and is located outside the first region 110a in the chromaticity correction plate 110. . That is, when viewed from the normal direction of the back surface of the substrate 101, the second region 110b is located around the light emitting region and does not cover the light emitting region. The second area 110b surrounds the first area 110a.

  The first region 110a is colorless and transparent. The second region 110b is colored and transparent. The chromaticity correction plate 110 (the first region 110a and the second region 110b) is integrally formed in a single plate shape with synthetic resin. The second region 110b is formed, for example, by mixing a predetermined pigment with synthetic resin. The second region 110b is colored and transparent with a predetermined color by a coloring material such as a pigment. Colorless and transparent means a state in which the chromaticity does not substantially change when white light is transmitted (ideally, a state in which the chromaticity does not change at all), and is not colored by a colorant or the like (or is not substantially colored), for example. The colored transparent means a state colored with a coloring material or the like. The dark and light color referred to below (hereinafter also referred to as color density as appropriate) can be expressed by the degree of coloring depending on the content of the coloring material, for example, and the color is dark. Means, for example, that the amount of coloring material is large and the degree of coloring is large, and that the color is light means that, for example, the amount of coloring material or the like is small (including the case where there is no color) and the degree of coloring is small. . Further, the change in color means that the amount of coloring material or the like changes to change the degree of coloring.

  The chromaticity of light emitted from the circularly polarizing plate 111 (light emitted from a conventional light emitting device, hereinafter referred to as emitted light) is particularly when the emitted light is a set of light having a plurality of wavelengths such as white light. Varies depending on the viewing angle θ. Here, the viewing angle θ is an angle with respect to the line of sight of the user or the like to the center of the light emitting region, and is a direction inclined with respect to the normal direction of the back surface of the substrate 101 (normal direction of the center of the light emitting region). It is an angle (see FIG. 4). The viewing angle θ is 0 when the observer's eyes are in the normal direction of the front surface of the light emitting device, that is, the back surface of the substrate 101. The reason why the chromaticity of the emitted light changes depending on the viewing angle θ is that when the viewing angle θ changes due to the reflection at the second electrode 104a, the refractive index of the first electrode 102a, the substrate 101, etc., the optical distance (refractive index). X distance) changes, and this causes the degree of interference and scattering of light to be different. In particular, as the viewing angle θ increases, light in a predetermined wavelength range becomes particularly weak. As a result, the balance of the spectrum of the emitted light (the relative value of each wavelength region) changes, and the chromaticity differs.

  Therefore, in this embodiment, the chromaticity correction plate 110 is configured so that light emitted obliquely with a viewing angle θ larger than 0 ° passes through the second region 110b of the chromaticity correction plate 110. Deploy. Specifically, the thickness, position, and the like of the first region 110a and the second region 110b are adjusted, and chromaticity correction is performed so that light emitted obliquely passes through the second region 110b of the chromaticity correction plate 110. The plate 110 is configured and arranged. The second region 110b is colored and transparent, has a good light transmittance in a certain wavelength region, and has a low light transmittance in a certain wavelength region. Accordingly, the light traveling in the direction in which the viewing angle θ is large is transmitted through the second region 110b, and light in another wavelength region different from the weakening wavelength region is not easily transmitted through the second region 110b. As a result, the balance of the spectrum is less likely to change compared to the original spectrum (the spectrum when the viewing angle θ is 0 °), and the change in chromaticity is reduced. In addition, since the first region 110a is lighter in color than the second region 110b (here, colorless and transparent), the chromaticity of the emitted light does not change more than the second region 110b (particularly, it hardly changes here). . As described above, according to the light emitting device 100 of the present embodiment, the change in the chromaticity due to the viewing angle during light emission is reduced, and the chromaticity on the front side is reduced or prevented from being different from the original chromaticity. Further, according to the light emitting device 100 in the present embodiment, the basic configuration of the light emitting device 100 can be made the same as that of the conventional light emitting device. For this reason, for example, the idea of suppressing the change in the optical distance by reducing the thickness of the first electrode 102a becomes unnecessary. When the first electrode 102a is thinned, the resistance value increases and the drive voltage for causing the light emitting device 100 to emit light increases.

  Hereinafter, examples of the present embodiment will be described.

Example 1
The light emitting device according to this example has the same cross-sectional configuration as the light emitting device 100. The light emitting device 100 employs the manufacturing method, materials, and the like exemplified above. Here, the light emitting layer 103 emits white light. The dot pitch between the pixels A (the length from the start of the pixel A to the start of the next pixel A) was set to 0.16 mm in both the vertical and horizontal directions. The size of the pixel A is 0.145 mm × 0.145 mm. The pixels A are arranged in a matrix with a number of 64 × 128. Such a light-emitting panel (the light-emitting device 100 excluding the chromaticity correction plate 110) has a size of about 1 inch as a display device.

  Lead lines 102b, 104b and the like are located outside the light emitting area of the light emitting panel (the area of the set of pixels A). The outer shape of the light emitting panel is about 30 mm × about 19 mm, but the light emitting area is about 23 mm × about 12 mm. Moreover, the thickness of the circularly polarizing plate 111 is about 300 μm.

  The chromaticity correction plate 110 has a thickness of about 2 mm, and the outer shape is substantially the same as that of the light emitting panel. The first region 110a overlaps the light emitting region. The second region 110b contains, for example, a phthalocyanine pigment. The first region 110a is colorless and transparent, and is a region where the transmittance of light having a wavelength of 430 nm to 800 nm is 98%. For this reason, the first region 110a transmits light of each wavelength substantially uniformly. FIG. 5 shows a transmission spectrum when white light emitted from the light-emitting panel passes through the first region 110a (0 ° in FIG. 5). The chromaticity of the white light emitted from the light emitting panel hardly changes when passing through the first region 110a.

  The second region 110b is a colored region so that the transmittance of light in the high wavelength region of the white light emitted from the light emitting panel is lowered. FIG. 5 shows a transmission spectrum when white light emitted from the light emitting panel at a viewing angle of 45 ° is transmitted through the first region 110a and the second region 110b (45 ° in FIG. 5). The second region 110b has a bluish color because the transmittance for light of a low wavelength is higher than the transmittance of a high wavelength region.

  Light emitted from the light emitting panel in an oblique direction (θ> 0) is transmitted through the first region 110a and transmitted through the second region 110b, so that the spectrum of the light changes in the second region 110b (particularly here) , The high wavelength region is a low value). Thereby, the chromaticity of light emitted from the light emitting panel in an oblique direction and transmitted through the second region 110b is corrected. In the light emitting device 100 as described above, generally, the larger the viewing angle, the smaller the spectrum value of the light in the short wavelength region. For this reason, in the second region 110b, the transmittance in the low wavelength region is higher than the transmittance in the high wavelength region, so that the spectral balance hardly changes as described above, and the change in chromaticity is reduced. Will be.

  FIG. 6 shows the measurement result of the spectrum of the radiant intensity (luminance) of the light emitted from the light-emitting panel (light without the chromaticity correction plate) measured at a viewing angle of 0 ° and 45 °. The measurement result of the spectrum of the radiant intensity (luminance) of the light emitted from the light emitting device 100 (light that has passed through the chromaticity correction plate 110) measured at a viewing angle of 0 ° and 45 ° is shown. is there.

  In the spectrum of light emitted from the light-emitting panel, when the viewing angle is compared with the 0 ° position and the 45 ° position, the 45 ° position has a lower wavelength region (near 470 nm) than the 0 ° viewing angle position. The brightness of the light in the region (2) is significantly lower than the brightness of the light in the other wavelength regions (see FIG. 6). For this reason, in the light emitting panel, it can be seen that the luminance in the low wavelength region is lowered and the chromaticity of light is changed due to the change in the size of the viewing angle.

  In the spectrum of the light emitted from the light emitting device 100, the luminance is 45 ° in the low wavelength region and the high wavelength region (region around 580 nm) when the viewing angle is compared with the position of 0 ° and the position of 45 °. However, the shape of the spectrum (spectrum balance) is substantially the same. This is because the transmittance of the second region 110b is low for light in the high wavelength region, and the second region 110b does not transmit light in the high wavelength region than light in the low wavelength region. For this reason, the chromaticity of the light emitted from the light emitting device 100 does not substantially change between the position where the viewing angle is 0 ° and the position where the viewing angle is 45 °. The spectrum shape (spectrum balance) at 0 ° is substantially the same when the chromaticity correction plate 110 is present and when it is not present. For this reason, even if the chromaticity correction plate 110 is present, when the viewing angle is small, the chromaticity of the light emitted from the light emitting device 100 does not substantially change compared to when the chromaticity correction plate 110 is not provided.

  This is supported by the table shown in FIG. The table in FIG. 7 shows the measurement result of the chromaticity of the light emitted from the light-emitting panel measured at a position where the viewing angle is 0 ° and 45 °, and the chromaticity of the light emitted from the light-emitting device 100. Shows measurement results measured at 0 ° and 45 ° positions. As shown in FIG. 7, the chromaticity of the light emitted from the light emitting panel changes between the 0 ° position and the 45 ° position, but the chromaticity of the light emitted from the light emitting device 100 has a viewing angle. There is almost no change between the 0 ° position and the 45 ° position. For this reason, the chromaticity correction plate 110 corrects the chromaticity. Further, when the viewing angle is 0 °, the chromaticity does not substantially change with or without the chromaticity correction plate 110.

  As is clear from the above, in the light emitting device 100 (the light emitting device 100 in which the first region 110a is colorless and transparent and the second region 110b is colored and transparent) having the configuration in the present embodiment, the viewing angle of chromaticity at the time of light emission. The change due to the above is reduced, and the chromaticity at the front is different from the original chromaticity, which is reduced or prevented. Note that the second region 110b may be more colored and transparent in the second region 110b than the first region 110a, and the first region 110a may be colored and transparent. This also reduces the change in chromaticity due to the viewing angle during light emission, and reduces the difference in chromaticity at the front from the original chromaticity.

  Note that the light emitted from the light emitting panel in an oblique direction has a different distance to pass through the second region 110b depending on the magnitude of θ (the thickness of the chromaticity correction plate 110 × 1 / cos θ). Therefore, it is possible to correct the chromaticity according to the viewing angle θ.

(Embodiment 2)
In the second embodiment, the chromaticity correction plate 110 of the first embodiment is changed to a chromaticity correction plate 210 (see FIG. 8). The second region 110b of the chromaticity correction plate 110 was uniformly colored when viewed from the normal direction of the back surface of the substrate 101, and the color density was uniform. The chromaticity correction plate 210 is viewed from the normal direction of the back surface of the substrate 101, and the second region 210b (second) from the center of the first region 210a (corresponding to the first region 110a. See above for the detailed description). It corresponds to the region 110b (see above for the detailed description)), and the color is formed so that the color gradually becomes darker (the density becomes higher). As a result, the chromaticity correction plate 210 is colored and transparent as a whole, but the color gradually becomes deeper toward the outside (see FIG. 8). FIG. 8 is a diagram showing the relationship between the chromaticity correction plate 210 and the color density. Such a chromaticity correction plate 210 can be obtained by gradually increasing the amount of pigment contained in the synthetic resin as it goes outward. The first region 210a may be at least partially colored and transparent. For example, the central region may be colorless and transparent. Thereby, the change in chromaticity when the viewing angle is 0 ° can be further suppressed.

  As described above, the luminance of the light in the predetermined wavelength region out of the light emitted from the light-emitting panel decreases as the viewing angle increases. Therefore, by adjusting the color density of the chromaticity correction plate 110 according to this change, more appropriate correction can be made for chromaticity. For example, the chromaticity correction plate 210 may be formed as having a transmission characteristic as shown in FIG. As a result, the transmittance decreases in the high wavelength region as the viewing angle increases, so that the chromaticity is corrected more appropriately as in the first embodiment (however, the front luminance is lower than that in the first embodiment). May be.) Note that FIG. 9 illustrates a case where the light emitting device 100 employs the chromaticity correction plate 210 instead of the chromaticity correction plate 110, at a position where the viewing angle θ is gradually changed with respect to the light emitted from the light emitting panel. It is the measurement result which measured the transmittance | permeability of the light whose wavelength is 470 nm, and the transmittance | permeability of the light of 580 nm.

  In the second embodiment, the color is gradually changed. However, the color may not be changed in an area that is a predetermined distance or more from the center of the first area 210a. In addition, the color may change discontinuously such that the color becomes a predetermined amount darker at a predetermined distance. Further, only the first region 210a may be colorless and transparent. If the second region 210b is darker in color than the region located at the first distance from the first region 210a than the region located at the second distance shorter than the first distance, the above effect can be obtained to some extent. Further, the color change means that the color changes when viewed from the normal direction of the substrate 101. The chromaticity correction plate 210 may be formed by overlapping a plurality of films having different colored regions.

  The other description of the second embodiment is the same as that of the first embodiment, and thus the description thereof is omitted.

(Modification)
Various modifications can be made to the above embodiments. For example, the number of light emitting areas may be one. This also provides the same effect as described above. In this case, when viewed from the normal direction of the back surface of the substrate 101, the first region 110a overlaps with one light emitting region, and the second region 110b is located on the chromaticity correction plate 110 more than the first region 110a. Located outside, for example, surrounds the periphery of the first region 110a. Further, the first region 110a may include a colored transparent region similar to the second region 110b at a position overlapping between the pixels A (see FIG. 3) when viewed from the normal direction of the back surface of the substrate 101. . In other words, the colored transparent region may be formed in a lattice shape when viewed from the normal direction of the back surface of the substrate 101. Thus, more appropriate chromaticity correction can be performed.

Further, the chromaticity correction plate 110 or 210 may be substituted for the substrate 101 (see FIG. 10). In FIG. 10, the chromaticity correction plate 110 is used, but the chromaticity correction plate 210 may be used similarly. In this case, for example, a light emitting portion or the like is formed on the surface of the chromaticity correction plate 110 or 210 (the surface opposite to the light exit surface). Thereby, the light emitting device becomes thin. In this case, the chromaticity correction plate 110 is composed of a synthetic resin plate such as PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or PES (polyethersulfone). Further, the chromaticity correction plate 110 may include a barrier layer formed on a synthetic resin plate or the like. The barrier layer is for preventing water from entering the light emitting device. The barrier layer may, for _example, SiO 2, SiN, SiON, by SiOC, etc., is formed to a thickness of 200 nm to 600 nm. The chromaticity correction plate 110 or 210 may be on the light emitting surface side of the light emitting device with respect to the light emitting unit. The structure of the light-emitting panel is not limited to the above, and various structures can be employed.

  In the above description, the light-emitting device is described as a display having the pixel A, but the light-emitting device may be a lighting device. In the above description, the passive organic EL light emitting device has been described. However, the light emitting device may be an active organic EL light emitting device, and other light emitting devices in which the spectrum of emitted light changes depending on the viewing angle ( For example, a liquid crystal device) may be used.

100 light emitting device 102a first electrode 102b lead line 103 light emitting layer 104a second electrode 104b lead line 105 sealing part 109 insulating film 110 chromaticity correction plate (transmission part)
110a First region 110b Second region 111 Circularly polarizing plate 210 Chromaticity correction plate (transmission part)
210a First region 210b Second region

Claims (10)

A light emitting unit that emits light from one or more light emitting regions;
Covering the light emitting unit, and including a transmission unit that transmits light emitted from the one or more light emitting regions,
The transmissive portion includes a first region that overlaps the one or more light emitting regions and a second region that is located outside the first region in the transmissive portion when viewed from the normal direction of the light emitting surface of the light emitting region. Prepared,
Said second region, said Ri darker colored transparent der than the first region, and formed by light transmittance in a short wavelength range higher than the light transmittance of the high-wavelength region,
A light emitting device characterized by that. The first region is colorless and transparent,
The light-emitting device according to claim 1. The first region is at least partially colored and transparent,
The light-emitting device according to claim 1. The second region is darker in color than a region located at a first distance from the first region and a second distance shorter than the first distance;
The light emitting device according to any one of claims 1 to 3. The light emitting unit is sandwiched between the first electrode, the second electrode facing the first electrode, the first electrode and the second electrode, and applies a voltage to the first electrode and the second electrode. A light emitting layer that emits light in a case,
The light emitting region is a region where the first electrode and the second electrode overlap.
The light emitting device according to claim 1, wherein the light emitting device is a light emitting device. The light emitting unit includes a plurality of the light emitting regions,
The first region overlaps a region where the plurality of light emitting regions are aggregated,
The light emitting device according to claim 1, wherein the light emitting device is a light emitting device. The first region is colored and transparent, as viewed from the normal direction of the light emitting surface of the light emitting region, and the region overlapping the plurality of light emitting regions is colored and transparent.
The light-emitting device according to claim 6. The first region is at least partially colorless and transparent,
The light emitting device according to claim 1, wherein the light emitting device is a light emitting device. The light emitting part is formed on one surface side of the transparent substrate,
The transmission part is formed on the surface side opposite to the one surface of the transparent substrate,
The light emitting device according to any one of claims 1 to 8. The light emitting part is formed on one surface side of the transparent substrate,
The transmission part is the transparent substrate.
The light emitting device according to any one of claims 1 to 8.

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