JP4219287B2 - Light emitting device and display device using the same - Google Patents

Description

  The present invention relates to a light emitting device including a plurality of light sources having different emission colors and a display device using the light emitting device.

  Conventionally, white fluorescent tubes and white light emitting diodes have been used for lighting fixtures, guide plates with built-in light sources, backlights for liquid crystal displays, and the like. However, a white light emitting diode that emits white light using a blue light emitting diode element and a yellow phosphor that emits yellow light when excited by blue light or a light emitting device that uses a white fluorescent tube as a light source can arbitrarily adjust the white point. In other words, there is a problem that the color purity is low because the emission wavelength has a wide spectrum, and the color reproduction range as a display is narrow.

  In addition, in a white light-emitting diode in which red, green, and blue light-emitting diodes are housed in one package, it is necessary to make each element small in order to accommodate the light-emitting diode elements of each color in one package. The emission intensity cannot be obtained. In particular, large displays and outdoor lighting fixtures cannot be used because they need to have high brightness.

  In order to improve the problem, there is a method of using a high-intensity light emitting diode in which each emission color is independent. For example, studies are being made to realize a display with a wide color reproduction range by using light emitting diodes of red, green, and blue with high color purity as backlights. Specifically, SID (SOCIETY FOR INFORMATION) DISPLAY) There is a method shown in DIGEST 03 PAGE 1259 to 1261 (Non-patent Document 1).

However, simply arranging the red, green, and blue light emitting diodes side by side causes a problem of uneven color in the illumination light from the light emitting device, and it is necessary to mix the light from each light source. That is, the light-emitting diode has a strong directivity to the light emitted, and if the light emitted from each light-emitting diode is incident on the light guide plate and then immediately emitted by scattering dots or the like, the light-emitting diode is sufficiently light. As a result, color unevenness occurs. Therefore, in Non-Patent Document 1, two light guide plates, that is, a mixing light guide plate not provided with an emission means such as scattering dots and an emission light guide plate provided with an emission means such as scattering dots are provided. The light from the light source that emits each light emission color is incident on the light guide plate for mixing, and the light from each light emitting diode is mixed and then incident on the light guide plate for emission, which is caused by scattering dots, etc. Illumination light is obtained by exiting to the outside of the light guide plate.
SID DIGEST 03 PAGE 1259-1261

However, a light-emitting device using a plurality of light sources having different emission colors has the following problems.
When light emitted from a plurality of light sources having different emission colors is mixed and used as illumination light, it is necessary to add a mixing member, and a space for arranging the mixing member is required. It is difficult to reduce the size and thickness of devices and displays.
Further, a means for connecting the mixing member and the emitting member is also necessary, and light loss occurs at the connection portion, and the light use efficiency deteriorates. Furthermore, since the light emission of the light source arranged at the extreme end is strongly influenced at the end of the light emitting device, there is a problem that the occurrence of color unevenness cannot be sufficiently suppressed even if a mixed region is provided.

  In view of the above, an object of the present invention is to provide a compact light emitting device and display device that can suppress color unevenness of illumination light emitted from an end of an illumination unit or between adjacent illumination units.

In the light emitting device according to the present invention, a plurality of light sources are arranged at regular intervals, and the light emission colors of the light sources adjacent to each other in the arrangement direction are different, and the light emitted from the plurality of light sources is mixed to emit illumination light. A light emitting device having at least one illumination unit , wherein a side wall is disposed around the illumination unit, and at least one light source whose emission color is the emission color of the illumination light is closest to the side wall It arrange | positions so that it may become a light source .

In the above, the plurality of light sources may include at least one light source that emits red, green, and blue light, and the light emission color of the illumination unit may be white.

  A display device according to the present invention is characterized by using a light-emitting device having any one of the above-described configurations.

  According to the present invention, since the light source having the same emission color as the emission color of the illumination unit is arranged at the end of the illumination unit, the color at the end of the illumination unit can be obtained even when a plurality of light sources having different emission colors are used. Unevenness can be reduced, and a light-emitting device having uniform illumination light can be obtained.

  According to the present invention, since the light source having the same emission color as that of the illumination unit is arranged between the two illumination units, the color between the illumination units can be obtained even when a plurality of light sources having different emission colors are used. Unevenness can be reduced, and a light-emitting device having uniform illumination light can be obtained.

  According to the present invention, since the light source having the same emission color as that of the illumination unit is disposed between the end of the illumination unit and between the two illumination units, a plurality of light sources having different emission colors are used. Even in this case, color unevenness between the end of the illumination unit and the illumination unit can be reduced, and a light emitting device having uniform illumination light can be obtained.

  According to the present invention, since at least one light source that emits red, green, and blue light is included, the color reproducibility of the illumination light is improved, and a light-emitting device having high-quality illumination light can be obtained. . Furthermore, it is possible to easily adjust the chromaticity of the illumination light by controlling the emission time of the light source of each emission color.

  According to the present invention, since the emission color conversion member that converts one kind of emission color into another color is provided, the type of emission color of the light source can be reduced, and the light from the light source having each emission color can be reduced. Can be easily mixed, and a light emitting device having illumination light with reduced color unevenness can be obtained. Furthermore, by forming a light emitting color conversion member that converts blue light into green light with a phosphor, a light emitting device with reduced color unevenness can be easily realized.

  According to the present invention, since the light source is a light emitting diode, the light emission wavelength spectrum is steep, so that a light emitting device having illumination light with high color purity can be obtained. Furthermore, by configuring with a light emitting diode, the light emission color of the light source for obtaining desired illumination light can be easily selected.

  According to the present invention, since a light emitting device having uniform illumination light with reduced color unevenness is used, high quality display can be easily performed.

  Hereinafter, light emitting devices according to first to fifth embodiments of the present invention and a display device according to an embodiment of the present invention will be described in order with reference to the drawings. Each figure is exaggerated for easy understanding, and the size and interval are different from the actual ones.

[Light Emitting Device According to First Embodiment]
FIG. 1 is a schematic diagram of a light emitting device according to a first embodiment of the present invention. The light emitting device according to the present embodiment is configured by one illumination unit 100.
The illumination unit 100 includes two red light sources 101, two green light sources 102, two blue light sources 103, and four white light sources 104 so as to include at least one light source that emits red, green, and blue light. The light emission color of the illumination unit 100 is white.

In the present embodiment, each light source is a light emitting diode. A light-emitting diode is used as the light source, and by changing the material constituting the light-emitting diode, the light emission wavelength of each light source can be easily selected and the light emission wavelength spectrum is steep. This is preferable.
Note that the white light source includes, for example, a light source that emits white light by exciting red, green, and blue phosphors with ultraviolet light, or a light source that emits white light by exciting yellow phosphors with blue light. be able to.

The plurality of light sources described above are linearly arranged at regular intervals.
That is, the red light source 101, the green light source 102, and the blue light source 103 are arranged in the central portion of the illumination unit 100 at a predetermined interval on the straight line A1.
Further, the blue light source 103, the red light source 101, and the green light source 102 are arranged in the central portion of the illumination unit 100 at a predetermined interval on the straight line A2.
Here, the “constant interval” means an approximately equal interval in addition to an equal interval.
The straight line A1 and the straight line A2 are parallel to the straight line A4 among the straight lines A3 and A4 that pass through the center O1 and are orthogonal to each other, and are separated from each other by an equal distance on both sides of the straight line A4.

  The light sources arranged on the straight lines A1 and A2 are arranged so that the light sources arranged on the same straight line do not have the same emission color, and the light source on the straight line A1 and the light source on the straight line A2 are Light sources adjacent to each other in the direction perpendicular to the straight line A1 are arranged in combination so as not to have the same emission color. With the arrangement described above, light emitted from each color light source can be easily mixed, and white illumination light can be obtained.

Further, a white light source 104 that emits white light, which is the emission color of the illumination unit 100, is disposed at the end of the illumination unit 100.
In the present embodiment, “the end portion of the lighting unit 100” means end portions in four directions different from each other by 90 degrees with respect to the center O1. In the present embodiment, the extending direction of the straight line A3 and the extending direction of the straight line A4 are not limited to these directions.
In addition, “end” is synonymous with “edge”, “edge”, “edge”, and the like of the lighting unit 100, and is further referred to as the outside of the central portion of the lighting unit 100 described above. You can also.

  Specifically, on the straight line A4, the white light sources 104 are respectively disposed at a distance W1 away from the center O1 from the points P1 and P2. Further, on the straight line A3, the white light source 104 is respectively separated into a place separated from the red light source 101 by a distance W2 in a direction away from the center O1 and a place separated from the green light source 102 in a direction away from the center O1 by a distance W2. Has been placed.

  In other words, a light source having the same emission color as that of the illumination unit 100 is arranged around a plurality of color light sources arranged at regular intervals so as to mix light emitted from the light sources.

Compared with the light source arranged at the center part, the light source arranged at the end part has a smaller number of adjacent light sources, so that the light source emitted from the light source at the end part is lighter than the light emitted from the light source at the center part of the illumination unit 100. The emitted light has a low degree of mixing, and the illumination light at the end of the illumination unit 100 is strongly influenced by the emission color of the light source disposed at the end of the illumination unit 100.
Therefore, color unevenness can be reduced by setting the emission color of the light source arranged at the end of the illumination unit 100 to white, which is the desired emission color of the illumination unit 100.

  In the present embodiment, the light emission color of the light source at the outermost end of the illumination unit 100 is white, but the light emission of the light source around the end (near) located second, third, etc. from the outermost end. The color may be white. For example, when the number of light sources provided in the lighting unit is large, the color unevenness can be further reduced by making the second and third white from the outermost end toward the center. Can do.

  Moreover, since the illumination unit represents a light source arrangement unit, each light source may be installed on the same substrate, or each light source may be installed on a separate substrate.

  Furthermore, although the description has been made using a red light source, a green light source, and a blue light source as the light source provided in the illumination unit, the same effect can be obtained with a light source having other emission colors, for example, a light source disposed in the illumination unit. Even if a light source having a cyan light emission color and a light source having a red light emission color are used, the light emission color of the illumination unit is white, and color unevenness can be reduced by arranging a white light source at the end of the illumination unit.

  Furthermore, although the luminescent color of the lighting unit has been described as white, the luminescent color of the lighting unit may be other colors. For example, when the light emission color of the lighting unit is yellow, the light emission color of the light source arranged in the lighting unit is red and green, and the light emission color of the light source arranged at the end of the lighting unit is yellow. do it.

[Light Emitting Device According to Second Embodiment]
Next, a light emitting device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a schematic view of a light emitting device according to the second embodiment of the present invention.
The light emitting device according to the second embodiment is configured by one illumination unit 110.
The illumination unit 110 includes three red light sources 101, three green light sources 102, three blue light sources 103, and two white light sources 104, and the light emission color of the illumination unit 110 is white.

The plurality of light sources are linearly arranged at a constant interval. Specifically, the white light source 104, the blue light source 103, the green light source 102, the red light source 101, and the white light source 104 are arranged at regular intervals on a straight line B1 passing through the center O2.
The straight line B2 is parallel to the straight line B1 with a predetermined interval, and the red light source 101, the blue light source 103, and the green light source 102 are arranged at regular intervals on the straight line B2.
The straight line B3 is parallel to the straight line B1 with a predetermined interval, and on the straight line B3, the green light source 102, the red light source 101, and the blue light source 103 are arranged at regular intervals.
In this embodiment, the white light source 104 is arrange | positioned at the both ends on the straight line B1.

The light sources arranged on the straight lines B1, B2 and B3 are the same emission color as the light sources arranged on each straight line, and any light source and the nearest light source arranged on the adjacent straight line. It is arranged so that it does not become.
With the arrangement described above, light emitted from each color light source can be easily mixed, and white illumination light having a desired emission color can be obtained.

  The lighting unit 110 is surrounded by a side wall 105 in a square shape. The side wall 105 is preferably formed of a member having a high light reflectance. For example, a mirror having a highly pure silver or aluminum reflecting film, or white PET (Poly Ethylene Terephthalate) that performs scattering reflection is suitable.

In the central portion of the illumination unit 110, the light sources having the respective emission colors are arranged in a well-balanced manner. Therefore, white light that is a desired emission color can be obtained by mixing the light from each light source.
However, since the side wall 105 is disposed at the end of the lighting unit 110, the light toward the side wall 105 is reflected by the side wall 105. The light source that emits the light most reflected by the side wall 105 is the light source that is disposed closest to the side wall 105, and the light source that emits the light most mixed with the light reflected by the side wall 105 is also nearest to the side wall 105. It is a certain light source.
Therefore, since the end of the illumination light of the illumination unit 110 has a light emission color biased to the emission color of the light source closest to the side wall 105, the light emission of the light source closest to the side wall 105, that is, the light source at the end of the illumination unit 110 is emitted. By setting the color to white, which is a desired emission color of the illumination unit 110, color unevenness can be reduced.
In the present embodiment, the side wall 105 has been described as a rectangular shape. However, for example, another polygonal shape or a circular shape may be used, and the side wall may be partially formed without surrounding the light source.
Furthermore, in this embodiment, although the example which formed the side wall which encloses one illumination unit 110 was shown, you may enclose the some illumination unit 110 by a single side wall.

[Light Emitting Device According to Third Embodiment]
Next, a light emitting device according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic view of a light emitting device according to the third embodiment of the present invention.
The light emitting device 120 according to the third embodiment includes two illumination units 130.
Each illumination unit 130 is configured to include one red light source 101, two green light sources 102, and one blue light source 103, and the light emission color of the illumination unit 130 is white.
Each lighting unit 130 is arranged with a required interval W3, and one white light source 104 is arranged between the two lighting units 130. A plurality of light sources can be disposed between the two illumination units 130. In this case, the colored light of at least one light source is white.

Specifically, in each light source of the illumination unit 130, a red light source 101, a green light source 102, a blue light source 103, and a green light source 102 are arranged at a constant interval on a straight line C1.
The white light source 104 disposed between the two illumination units 130 is disposed on the straight line C1 and is the center of the interval W3, in other words, the green light source 102 of one illumination unit 130 and the other illumination unit 130. It arrange | positions in the position which divides between the red light sources 101 equally.
Note that the light sources arranged on the straight line C1 are arranged so that the light emission colors of the adjacent light sources do not become the same light emission color, as in the case of the above-described embodiments.

As described above, when two lighting units are arranged adjacent to each other, a space is generated between the lighting units because it is necessary to provide a region for fixing the lighting unit.
Therefore, even if the arrangement of the light sources of a plurality of emission colors provided in the illumination unit is devised, a space is generated between the illumination units, so that all the light sources including the two illumination units are arranged at equal intervals. Is difficult. In addition, when the light source of the illumination unit is arranged in consideration of the space between the two illumination units, the distance between the light sources is increased, and the number of light sources arranged in the same region is reduced, resulting in a decrease in luminance.

In the non-equal interval portion where the distance between the two illumination units, that is, the distance between the respective light sources is not constant, the light from the two light sources forming the non-equal interval increases. In other words, the illumination light emitted from the light emitting device 120 is strongly influenced by the light from the two light sources that form non-uniform intervals in the portion between the two illumination units 130.
That is, in the case where the white light source 104 is not arranged in FIG. 3, the light emission color between the two illumination units 130 is strongly influenced by the green light source and the red light source, and color unevenness occurs.
Therefore, color unevenness is reduced by setting the light emission color of the light source arranged between the two illumination units 130 to white, which is the desired light emission color of the illumination unit 130.

[Light Emitting Device According to Fourth Embodiment]
Next, a light-emitting device according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic view of a light emitting device according to the fourth embodiment of the present invention.
The light emitting device according to the fourth embodiment is configured by one illumination unit 140.
The illumination unit 140 includes a white light source 104, a green light source 102, a blue light source 103, a green light source 102, a red light source 101, a green light source 102, a blue light source 103, a green light source 102, a red light source 101, a green light source 102, and a white light source 104. They are arranged on the straight line D1 at regular intervals, and the luminescent color of the illumination unit 140 is white.
The light sources arranged on the straight line D1 are arranged so that the emission colors of adjacent light sources do not become the same emission color, and the white light sources 104 are arranged at both ends of the light source arrangement.

  Since light sources of each emission color are sufficiently arranged around an arbitrary light source arranged near the center of the lighting unit 140, light from each light source, that is, red, green, and blue light is sufficiently emitted. Mixed to become white. Moreover, since the light source of each light emission color is not fully arrange | positioned in the edge part of the illumination unit 140, color unevenness will arise in illumination light. Therefore, color unevenness can be reduced by setting the emission color of the light source arranged at the end of the illumination unit 140 to white, which is the desired emission color of the illumination unit 140.

  Incidentally, FIG. 5 shows the measurement results of chromaticity when a plurality of light sources are arranged as shown in FIGS. FIG. 5 is a characteristic diagram showing the measurement result of chromaticity, FIG. 6 is a schematic diagram showing a light source arrangement at the time of measurement, in which the light emission color of the light source arranged at the end of the illumination unit is white, and FIG. It is a schematic diagram which shows the light source arrangement | sequence at the time of measurement which does not make the luminescent color of the light source arrange | positioned at the edge part of a unit white.

The illumination unit 150 shown in FIG. 6 includes a white light source 104, a red light source 101, a green light source 102, a blue light source 103, a red light source 101, a green light source 102, a blue light source 103, and a white light source 104 that are 10 mm in length on a straight line E1. ) The light emission color of the illumination light is white. Each light source is a light emitting diode.
In other words, the light sources arranged on the straight line E1 are arranged so that the light emission colors of the adjacent light sources do not become the same light emission color, and the white light sources 104 are arranged at both ends of the light source arrangement.

  7 includes a red light source 101, a green light source 102, a blue light source 103, a red light source 101, a green light source 102, a blue light source 103, a red light source 101, a green light source 102, and a blue light source 103 on a straight line F1. They are arranged at an interval of 10 mm, and the light emission color of the illumination unit 160 is white, which is the same as the light emission color of the illumination unit 150 shown in FIG. That is, the illumination unit 160 shown in FIG. 7 has a configuration in which the white light sources 104 are not arranged at both ends. The measurement point is 20 (mm) away from the straight line where the light source is arranged.

In FIG. 5, x1 and y1 indicate chromaticity as a measurement result of the illumination unit 150 shown in FIG. 6, and x2 and y2 indicate chromaticity as a measurement result of the illumination unit 160 shown in FIG.
As is clear from FIG. 5, since the light emission colors of the light sources are repeatedly arranged in red, green, and blue at the central portions of the illumination units 150 and 160, there is no significant difference in chromaticity even at the central portion of the measurement point. No.
However, there is a great difference in chromaticity measurement results at different positions of the illumination units 150 and 160, that is, at the ends where the light emission color of the light source is white. The chromaticity at both ends of the measurement point in the illumination unit 150 is that the light emission color of the light sources arranged at the both ends is white, so that the mixed light from each light source in the center where the illumination light of the illumination unit 150 is white There is no big difference in chromaticity, and uniform white light is obtained.
On the other hand, the chromaticity at both ends of the measurement point in the illumination unit 160 is determined by the light emission color of the light source arranged at the end from each light source in the center where the emission color of illumination light is white. Since it is different from the mixed color light, it becomes color unevenness unlike the chromaticity at the center of the measurement point.

In particular, in the illumination unit 160 shown in FIG. 7, the light emission color of the light source disposed at one end is red, and the light emission color of the light source disposed at the other end is blue. The value of x2 at both ends of the measurement point greatly changes due to the influence of the light emission color of the light source arranged at.
Even if a light source having a green emission color is arranged at the end instead of the order of red, green, and blue, it is clear that the value of y2 changes greatly at both ends of the measurement point. .
Therefore, uniform white light with reduced color unevenness can be obtained by making the end of the light source included in the illumination unit white. In this embodiment, since the white light source 104 is disposed at both extreme ends, the effect of reducing color unevenness is greater than when the white light source 104 is disposed only at one end.

[Light Emitting Device According to Fifth Embodiment]
Next, a light emitting device according to a fifth embodiment of the invention will be described with reference to FIG. FIG. 8 is a schematic view of a light emitting device according to the fifth embodiment of the present invention.
The light emitting device 170 according to the fifth embodiment is configured to have one illumination unit 180 and a light emission color conversion member 190.
In the illumination unit 180, the white light source 104, the blue light source 103, the red light source 101, the blue light source 103, the red light source 101, and the white light source 104 are sequentially arranged on the straight line G <b> 1 at regular intervals. The emitted illumination light is white. That is, in this embodiment, the green light source 102 is not arranged.
As described above, the light sources arranged on the straight line G1 are arranged so that the emission colors of the adjacent light sources do not become the same emission color, and the white light sources 104 are arranged at both ends. It is.

The light emission color conversion member 190 has a function of converting one kind of light emission color to another color among a plurality of light sources included in the illumination unit 180.
Specifically, it has a function of changing blue light to green light. In this embodiment, the organic phosphor film 190a is laminated on the light source side of the transparent film 190b.
Note that the ratio of converting blue light to green light can be easily adjusted by simply reducing or increasing the thickness of the organic phosphor film 190a.

  In the above configuration, the light emitted from the blue light source 103 is partly converted to green light by the organic phosphor film 190 a, the remaining blue light is transmitted, and is emitted from the red light source 101. The light passes through the organic phosphor film 190a. That is, the emission color of light transmitted through the transmission film 190b is white without providing a green light source. Thereby, it is not necessary to provide a green light source, and it is only necessary to mix two kinds of emission colors, so that color unevenness can be reduced.

  Further, a white light source 104 that emits white light, which is a desired emission color of the illumination unit 180, is disposed at the end of the illumination unit 180. For this reason, the light source arranged at the end portion has a smaller number of adjacent light sources than the light source arranged at the central portion, and is emitted from the light source at the end portion compared to the light from the light source at the central portion of the illumination unit 180. The degree of mixing of light becomes low, and the end of the illumination light of the illumination unit is strongly influenced by the emission color of the light source disposed at the end of the illumination unit.

Therefore, color unevenness can be reduced by setting the light emission color of the light source arranged at the end of the illumination unit 180 to white which is a desired light emission color.
In the present embodiment, the organic phosphor is used for the light emission color conversion member, but it may be formed of other materials such as an inorganic phosphor.
Moreover, when a light-emitting device has a plurality of illumination units, a light emission color conversion member may be installed in each illumination unit, or a common light emission color conversion member may be installed in each illumination unit.
Further, the colored light conversion member may be disposed only on the blue light source. Furthermore, although each light source of the illumination unit is arranged one-dimensionally, the same effect can be obtained even when arranged two-dimensionally.

Next, a display device according to an embodiment of the present invention will be described with reference to FIG. FIG. 9 is an exploded perspective view of a display device according to an embodiment of the present invention.
The display device according to an embodiment of the present invention has a configuration in which the liquid crystal panel 200 is disposed on the light emitting surface of the light emitting device 210.
The light emitting device 210 is composed of one illumination unit, and the illumination light emitted from the illumination unit is white.

In the illumination unit, a plurality of light sources having red, green, blue and white light emission colors are arranged, the periphery thereof is surrounded by side walls, and a diffusion plate is arranged on the light emitting surface.
Moreover, the light emission color of the light source arrange | positioned at the edge part of an illumination unit is white which is the desired light emission color of an illumination unit. Although not shown, an optical sheet such as a diffusion sheet or a prism sheet may be disposed between the light emitting device 210 and the liquid crystal panel 200.

The illumination light of the light emitting device 210 is reduced in color unevenness at the end of the lighting unit, that is, the end of the light emitting device near the side wall, because the light emission color of the light source disposed at the end of the lighting unit is white. ing.
Therefore, an image displayed through the liquid crystal panel 200 can be displayed with high quality with reduced color unevenness. In addition, since the light source included in the illumination unit has a plurality of emission colors, display with high color purity is possible and the color of the illumination light can be easily adjusted.

  In the present embodiment, a display device using liquid crystal has been described as an example. However, a guide plate, a signboard, and the like using illumination light can be easily realized by using the same method, depending on display contents, time, and the like. Not only can the display color be changed, but also the color unevenness is reduced, so the contents can be clearly communicated.

1 is a schematic diagram of a light emitting device according to a first embodiment of the present invention. It is a schematic diagram of the light-emitting device which concerns on the 2nd Embodiment of this invention. It is a schematic diagram of the light-emitting device which concerns on the 3rd Embodiment of this invention. It is a schematic diagram of the light-emitting device which concerns on the 4th Embodiment of this invention. It is a characteristic view which shows the measurement result of chromaticity. It is a schematic diagram which shows the light source arrangement | sequence at the time of measurement which made the luminescent color of the light source arrange | positioned at the edge part of an illumination unit white. It is a schematic diagram which shows the light source arrangement | sequence at the time of measurement which does not make the luminescent color of the light source arrange | positioned at the edge part of an illumination unit white. It is a schematic diagram of the light-emitting device which concerns on the 5th Embodiment of this invention. 1 is an exploded perspective view of a liquid crystal display device to which a display device according to an embodiment of the present invention is applied.

Explanation of symbols

101-104 Light source 100 Illumination unit 110 Illumination unit 120 Light-emitting device 130 Illumination unit 140 Illumination unit 150 Illumination unit 160 Illumination unit 170 Light-emitting device 180 Illumination unit 190 Light-emitting color conversion member 200 Liquid crystal panel 210 Light-emitting device

Claims (3)

A plurality of light sources are arranged at regular intervals, and light sources adjacent to each other in the arrangement direction have different emission colors, and have at least one illumination unit that emits illumination light by mixing light emitted from the plurality of light sources. A light emitting device,
A side wall is arranged around the illumination unit, and at least one light source whose emission color is the emission color of the illumination light is arranged to be a light source closest to the side wall. . 2. The light emitting device according to claim 1, wherein the plurality of light sources include at least one light source that emits red, green, and blue light, and the light emission color of the illumination unit is white . A display device comprising the light-emitting device according to claim 1.

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