Light source device and display device

Abstract

A light source device and a display device capable of improving characteristics are provided. [Solution] According to an embodiment, a light source device includes a light-emitting panel and a control unit. The light-emitting panel includes first and second light-emitting components. The first light-emitting component includes first and second light-emitting sections. The second light-emitting component includes third and fourth light-emitting sections. The first light-emitting section emits first light having a first chromaticity region. The second light-emitting section emits second light having a second chromaticity region. The third light-emitting section emits third light having the first chromaticity region. The fourth light-emitting section emits fourth light having the second chromaticity region. The second chromaticity region is included in the first chromaticity region. A portion of the first chromaticity region is not included in the second chromaticity region.

Description

[Technical Field]

[0001] FIELD An embodiment of the present invention relates to a light source device and a display device. [Background technology]

[0002] For example, light source devices such as backlights are used in display devices, and improvements in the characteristics of light source devices are desired. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special publication 2009-526277 Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments provide a light source device and a display device that can improve characteristics. [Means for solving the problem]

[0005] According to an embodiment, a light source device includes a light-emitting panel and a control unit. The light-emitting panel includes a first light-emitting component and a second light-emitting component. The first light-emitting component includes a first light-emitting section and a second light-emitting section. The second light-emitting component includes a third light-emitting section and a fourth light-emitting section. The first light-emitting section is configured to emit first light having a first chromaticity range. The second light-emitting section is configured to emit second light having a second chromaticity range. The third light-emitting section is configured to emit third light having the first chromaticity range. The fourth light-emitting section is configured to emit fourth light having the second chromaticity range. The second chromaticity range is included in the first chromaticity range. A portion of the first chromaticity range is not included in the second chromaticity range. The control unit is configured to perform a first operation that satisfies any one of a first condition, a second condition, a third condition, and a fourth condition. Under the first condition, the control unit supplies a first power to the first light-emitting unit, a second power to the second light-emitting unit, the second power being smaller than the first power, a third power to the third light-emitting unit, and a fourth power to the fourth light-emitting unit, the third power being smaller than the fourth power. Under the second condition, the control unit supplies the first power to the first light-emitting unit, the second power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit. Under the third condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, supplies the third power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit. Under the fourth condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit. [Effects of the Invention]

[0006] The embodiments provide a light source device and a display device that can improve characteristics. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic plan view illustrating the light source device according to the first embodiment. [Figure 2] FIG. 2 is a schematic perspective view illustrating the use state of the light source device according to the first embodiment. [Figure 3] FIG. 3 is a chromaticity diagram illustrating the characteristics of the light source device according to the first embodiment. [Figure 4] FIG. 4 is a schematic plan view illustrating the light source device according to the first embodiment. [Figure 5] FIG. 5 is a graph illustrating the characteristics of the light source device according to the first embodiment. [Figure 6] FIG. 6 is a graph illustrating the characteristics of the light source device according to the first embodiment. [Figure 7] FIG. 7 is a schematic view illustrating a part of the light source device according to the first embodiment. [Figure 8] FIG. 8 is a schematic view illustrating a part of the light source device according to the first embodiment. [Figure 9] FIG. 9 is a schematic view illustrating a part of the light source device according to the first embodiment. [Figure 10] FIG. 10 is a schematic view illustrating a part of the light source device according to the first embodiment. [Figure 11] FIG. 11 is a schematic cross-sectional view illustrating the display device according to the second embodiment. [Figure 12] FIG. 12 is a schematic plan view illustrating a part of the display device according to the second embodiment. [Figure 13] FIG. 13 is a schematic plan view illustrating a part of the display device according to the second embodiment. [Figure 14] FIG. 14 is a schematic view illustrating the display device according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between parts, etc. are not necessarily the same as those in reality. Even when the same part is shown, the dimensions and ratios may be different depending on the drawing. In this specification and in each drawing, elements similar to those previously described with reference to the previous drawings are designated by the same reference numerals, and detailed descriptions thereof will be omitted where appropriate.

[0009] (First embodiment) FIG. 1 is a schematic plan view illustrating the light source device according to the first embodiment. FIG. 2 is a schematic perspective view illustrating the use state of the light source device according to the first embodiment. FIG. 3 is a chromaticity diagram illustrating the characteristics of the light source device according to the first embodiment.

[0010] 1, a light source device 110 according to the first embodiment includes a light-emitting panel 10P and a control unit 70. The light-emitting panel 10P includes a first light-emitting component 21 and a second light-emitting component 22.

[0011] The light-emitting panel 10P may include a plurality of light-emitting components 20. The plurality of light-emitting components 20 may be arranged two-dimensionally. For example, the plurality of light-emitting components 20 are arranged along a first direction D1 and a second direction D2. The second direction D2 intersects with the first direction D1. The first light-emitting component 21 is one of the plurality of light-emitting components 20. The second light-emitting component 22 is another of the plurality of light-emitting components 20. The light-emitting surface of the light-emitting panel 10P is along the XY plane.

[0012] The first direction D1 is the Y-axis direction. One direction perpendicular to the Y-axis direction is the X-axis direction. The direction perpendicular to the Y-axis and X-axis directions is the Z-axis direction. The second direction D2 may be, for example, the X-axis direction.

[0013] The positions of the first light emitting component 21 and the second light emitting component 22 on the XY plane are arbitrary.

[0014] As shown in FIG. 2, in one example, the light source device 110 is used in combination with a display panel 80. The display panel 80 is overlaid on a light-emitting panel 10P. A third direction D3 from the light-emitting panel 10P to the display panel 80 intersects with a plane including the first direction D1 and the second direction D2. The third direction D3 may be, for example, the Z-axis direction. Light emitted from the light-emitting panel 10P is aligned with the Z-axis direction. The light emitted from the light-emitting panel 10P is incident on the display panel 80. The intensity of the light is modulated in the display panel 80, and display is performed.

[0015] For example, a display device 210 according to the embodiment may include a light source device 110 and a display panel 80. The light source device 110 may function as a backlight in the display device 210.

[0016] 1 and 2, the first light emitting component 21 includes a first light emitting portion 11 and a second light emitting portion 12. The second light emitting component 22 includes a third light emitting portion 13 and a fourth light emitting portion 14.

[0017] Figure 3 illustrates the chromaticity characteristics of light obtained from these light-emitting units. As shown in Figure 3, light-emitting panel 10P may produce light having the chromaticity characteristics of at least one of first chromaticity region 11R and second chromaticity region 12R. Second chromaticity region 12R is included in first chromaticity region 11R. A portion of first chromaticity region 11R is not included in second chromaticity region 12R. First chromaticity region 11R is larger than second chromaticity region 12R.

[0018] As shown in Fig. 2, the first light-emitting unit 11 is configured to emit a first light L1 having a first chromaticity region 11R. The second light-emitting unit 12 is configured to emit a second light L2 having a second chromaticity region 12R. The third light-emitting unit 13 is configured to emit a third light L3 having the first chromaticity region 11R. The fourth light-emitting unit 14 is configured to emit a fourth light L4 having the second chromaticity region 12R.

[0019] The first light-emitting unit 11 and the third light-emitting unit 13 correspond to first-type light-emitting units in a first chromaticity region 11R (wide chromaticity range). The second light-emitting unit 12 and the fourth light-emitting unit 14 correspond to second-type light-emitting units in a second chromaticity region 12R (narrow chromaticity range). For example, the first characteristic excluding the chromaticity range of the first-type light-emitting units may be different from the second characteristic excluding the chromaticity range of the second-type light-emitting units. For example, the efficiency of the second-type light-emitting units is higher than the efficiency of the first-type light-emitting units. In the embodiment, the efficiency corresponds to the power efficiency relative to the input power. For example, the lifetime of the second-type light-emitting units may be longer than the lifetime of the first-type light-emitting units. For example, the operating temperature range of the second-type light-emitting units may be different from the operating temperature range of the first-type light-emitting units.

[0020] The control unit 70 may be configured to perform a first operation that satisfies any of the following first, second, third, and fourth conditions.

[0021] Under the first condition, the control unit 70 supplies a first power P1 to the first light-emitting unit 11 and a second power P2 to the second light-emitting unit 12. The second power P2 is smaller than the first power P1. Under the first condition, the control unit 70 supplies a third power P3 to the third light-emitting unit 13 and a fourth power P4 to the fourth light-emitting unit 14. The third power P3 is smaller than the fourth power P4.

[0022] Under the second condition, the control unit 70 supplies the first power P1 to the first light-emitting unit 11, supplies the second power P2 to the second light-emitting unit 12, does not supply power to the third light-emitting unit 13, and supplies the fourth power P4 to the fourth light-emitting unit 14.

[0023] Under the third condition, the control unit 70 supplies the first power P1 to the first light-emitting unit 11, does not supply power to the second light-emitting unit 12, supplies the third power P3 to the third light-emitting unit 13, and supplies the fourth power P4 to the fourth light-emitting unit 14.

[0024] Under the fourth condition, the control unit 70 supplies the first power P1 to the first light-emitting unit 11, does not supply power to the second light-emitting unit 12, does not supply power to the third light-emitting unit 13, and supplies the fourth power P4 to the fourth light-emitting unit 14.

[0025] This configuration allows selective switching between light with a wide chromaticity range and light with a narrow chromaticity range for each light-emitting component. For example, efficient light can be obtained. For example, a display device can be obtained that achieves a wide color gamut in multiple target regions in the XY plane while reducing power consumption.

[0026] For example, under the first condition, the first light-emitting unit 11 emits light with high power, the second light-emitting unit 12 emits light with low power, the third light-emitting unit 13 emits light with low power, and the fourth light-emitting unit 14 emits light with high power. Under the first condition, light with a wide chromaticity range is obtained from the first light-emitting component 21. Light with a narrow chromaticity range is obtained from the second light-emitting component 22. Bright light is obtained from the first light-emitting component 21 and the second light-emitting component 22 due to the light emitted by the second light-emitting unit 12 and the fourth light-emitting unit 14.

[0027] For example, under the second condition, the first light-emitting unit 11 emits light with high power, the second light-emitting unit 12 emits light with low power, the third light-emitting unit 13 does not emit light, and the fourth light-emitting unit 14 emits light. The first light-emitting component 21 provides light with a wide chromaticity range. The second light-emitting component 22 provides light with a narrow chromaticity range. Bright light is provided by the first light-emitting component 21 due to the light emitted by the second light-emitting unit 12.

[0028] Under the third condition, the first light-emitting unit 11 emits light, the second light-emitting unit 12 does not emit light, the third light-emitting unit 13 emits light with low power, and the fourth light-emitting unit 14 emits light with high power. The first light-emitting component 21 emits light with a wide chromaticity range. The second light-emitting component 22 emits light with a narrow chromaticity range. The light emitted by the fourth light-emitting unit 14 emits bright light from the second light-emitting component 22.

[0029] Under the fourth condition, the first light-emitting unit 11 emits light, the second light-emitting unit 12 does not emit light, the third light-emitting unit 13 does not emit light, and the fourth light-emitting unit 14 emits light. The first light-emitting component 21 produces light with a wide chromaticity range. The second light-emitting component 22 produces light with a narrow chromaticity range.

[0030] For example, by using the first light-emitting section 11 and the third light-emitting section 13, light with a wide chromaticity range can be obtained. For example, a display with high color reproducibility can be easily obtained. On the other hand, by using the second light-emitting section 12 and the fourth light-emitting section 14, characteristics other than the chromaticity range can be improved. For example, efficient light according to the application can be obtained. According to the embodiment, for example, a light source device that can save power can be obtained.

[0031] In one example, the efficiency of the second type light emitting portion may be higher than the efficiency of the first type light emitting portion, in which case light with a wide chromaticity range and light with high efficiency can be switched between them.

[0032] For example, the second efficiency of the second light-emitting section 12 is higher than the first efficiency of the first light-emitting section 11. The fourth efficiency of the fourth light-emitting section 14 is higher than the third efficiency of the third light-emitting section 13. In this case, by using the first light-emitting section 11 and the third light-emitting section 13, light with a wide chromaticity range can be obtained. This makes it easier to achieve a display with high color reproducibility. On the other hand, by using the second light-emitting section 12 and the fourth light-emitting section 14, highly efficient light can be obtained. For example, efficient light according to the application can be obtained by switching. According to the embodiment, for example, a light source device capable of improving characteristics can be obtained.

[0033] The control unit 70 may be configured to further perform a second action that satisfies the fifth or sixth condition.

[0034] Under the fifth condition, the control unit 70 supplies a fifth power P5 to the first light-emitting unit 11 and a sixth power P6 to the second light-emitting unit 12. The sixth power P6 is greater than the fifth power P5.

[0035] In the sixth condition, the control unit 70 does not supply power to the first light-emitting unit 11, and supplies a sixth power P6 to the second light-emitting unit 12.

[0036] Under the fifth condition, the first light-emitting unit 11 emits light with low power, and the second light-emitting unit 12 emits light with high power. Under the sixth condition, the first light-emitting unit 11 does not emit light, and the second light-emitting unit 12 emits light. In the second operation under the fifth or sixth condition, light with a narrow chromaticity range is obtained in the first light-emitting component 21. For example, characteristics other than the chromaticity range can be improved.

[0037] By switching between the first operation and the second operation, the first light-emitting component 21 switches between light with a wide chromaticity range and light with a narrow chromaticity range. For example, by switching between the first operation and the second operation, the first light-emitting component 21 switches between a wide chromaticity range and high efficiency. For example, a wide chromaticity range and low power consumption can be obtained. For example, efficient light according to the application can be obtained by switching. According to the embodiment, for example, a light source device capable of improving characteristics can be obtained.

[0038] The control unit 70 may be configured to further perform a third operation. In the third operation, the control unit 70 supplies a seventh power P7 to the first light-emitting unit 11 and an eighth power P8 to the second light-emitting unit 12. The eighth power P8 is equal to or greater than the seventh power P7. The eighth power P8 may be greater than the seventh power P7. The seventh power P7 may be the same as the first power P1.

[0039] For example, in the third operation, light in a narrow chromaticity range is emitted from the first light-emitting component 21. By switching between the first operation and the third operation, the first light-emitting component 21 switches between light in a wide chromaticity range and light in a narrow chromaticity range. Switching between a wide chromaticity range and high efficiency is possible. For example, efficient light according to the application can be obtained by switching. According to the embodiment, for example, a light source device capable of improving characteristics can be obtained.

[0040] In the first, second, and third operations, the first light-emitting component 21 and the second light-emitting component 22 may be interchanged. The operations are controlled by the control unit 70. The first light-emitting component 21 and the second light-emitting component 22 may be integrated.

[0041] 1, the light-emitting panel 10P includes a first scanning line 53a, a second scanning line 53b, a first driving line 51a, a second driving line 52b, a third driving line 51c, and a fourth driving line 52d. The first scanning line 53a and the second scanning line 53b extend along a first direction D1. The first driving line 51a, the second driving line 52b, the third driving line 51c, and the fourth driving line 52d extend along a second direction D2. As already described, the second direction D2 intersects with the first direction D1.

[0042] The first scanning line 53a is electrically connected to the first light-emitting section 11 and the second light-emitting section 12. The second scanning line 53b is electrically connected to the third light-emitting section 13 and the fourth light-emitting section 14. The first driving line 51a is electrically connected to the first light-emitting section 11. The second driving line 52b is electrically connected to the second light-emitting section 12. The third driving line 51c is electrically connected to the third light-emitting section 13. The fourth driving line 52d is electrically connected to the fourth light-emitting section 14.

[0043] The control unit 70 is electrically connected to the first scanning line 53a, the second scanning line 53b, the first driving line 51a, the second driving line 52b, the third driving line 51c, and the fourth driving line 52d. The control unit 70 is configured to control the potentials of these lines, thereby performing the above-mentioned operations.

[0044] FIG. 4 is a schematic plan view illustrating the light source device according to the first embodiment. As shown in FIG. 4, the control unit 70 may include a first circuit 71, a second circuit 72, and a third circuit 73.

[0045] For example, the light-emitting panel 10P may include a plurality of scan lines 53. The plurality of scan lines 53 extend along a first direction D1. The first scan line 53a is one of the plurality of scan lines 53. The second scan line 53b is another of the plurality of scan lines 53.

[0046] For example, the light-emitting panel 10P may include a plurality of first-type drive lines 51 and a plurality of second-type drive lines 52. The plurality of first-type drive lines 51 and the plurality of second-type drive lines 52 are aligned along the second direction D2. The first drive line 51a is one of the plurality of first-type drive lines 51. The second drive line 52b is one of the plurality of second-type drive lines 52. The third drive line 51c is another of the plurality of first-type drive lines 51. The fourth drive line 52d is another of the plurality of second-type drive lines 52.

[0047] The first circuit 71 is electrically connected to a plurality of first-type drive lines 51. The second circuit 72 is electrically connected to a plurality of second-type drive lines 52. The third circuit 73 is electrically connected to a plurality of scanning lines 53. Each of the first circuit 71 and the second circuit 72 may include a driving IC. The driving IC may include, for example, a driving current supply circuit and a PWM gradation control circuit. The third circuit 73 may include, for example, a power supply scanning IC.

[0048] The control unit 70 is configured to control the potentials of the plurality of scanning lines 53, the plurality of first-type driving lines 51, and the plurality of second-type driving lines 52. As a result, the first operation described above is performed for any two of the plurality of light emitting components 20. The second operation described above may be performed for any two of the plurality of light emitting components 20. The third operation described above may be performed for any one of the plurality of light emitting components 20.

[0049] According to the embodiment, light having a wide chromaticity range and light having a narrow chromaticity range are switched and emitted from any one of the plurality of light emitting components 20. When light having a narrow chromaticity range is emitted, for example, highly efficient light emission may be obtained. When light having a narrow chromaticity range is emitted, characteristics different from those of light having a wide chromaticity range, such as long-life light emission, may be obtained. According to the embodiment, a light source device capable of improving characteristics is obtained.

[0050] 5 and 6 are graphs illustrating the characteristics of the light source device according to the first embodiment. Fig. 5 illustrates a first spectral distribution 11S of the first light L1 emitted from the first light-emitting unit 11. Fig. 6 illustrates a second spectral distribution 12S of the second light L2 emitted from the second light-emitting unit 12. In these figures, the horizontal axis represents wavelength λ, and the vertical axis represents intensity I1.

[0051] For example, the first chromaticity region 11R (wide chromaticity range) illustrated in Fig. 3 is obtained by the first spectral distribution 11S illustrated in Fig. 5. The second chromaticity region 12R (narrow chromaticity range) illustrated in Fig. 3 is obtained by the second spectral distribution 12S illustrated in Fig. 6. The spectral distribution of the third light L3 emitted from the third light-emitting unit 13 may be similar to the first spectral distribution 11S. The spectral distribution of the fourth light L4 emitted from the fourth light-emitting unit 14 may be similar to the second spectral distribution 12S.

[0052] FIG. 7 is a schematic view illustrating a part of the light source device according to the first embodiment. 7, the first light-emitting unit 11 includes a first light-emitting element 31, a second light-emitting element 32, and a third light-emitting element 33. The first light-emitting element 31 is configured to emit a first light emission Le1 having a first peak wavelength. The second light-emitting element 32 is configured to emit a second light emission Le2 having a second peak wavelength. The third light-emitting element 33 is configured to emit a third light emission Le3 having a third peak wavelength.

[0053] The first peak wavelength is longer than the second peak wavelength. The second peak wavelength is longer than the third peak wavelength. For example, the first light Le1 is red light. For example, the second light Le2 is green light. The third light Le3 is blue light. The first light L1 is obtained by combining these three lights. Such three types of light-emitting elements may provide light with a wide chromaticity range. These light-emitting elements may include, for example, LEDs.

[0054] The third light-emitting section 13 may have a configuration similar to that of the first light-emitting section 11. For example, each of the first light-emitting section 11 and the third light-emitting section 13 may include the first light-emitting element 31, the second light-emitting element 32, and the third light-emitting element 33 described with reference to FIG.

[0055] FIG. 8 is a schematic view illustrating a part of the light source device according to the first embodiment. 8, the first light-emitting unit 11 includes a first light-emitting element 31, a second light-emitting element 32, a third light-emitting element 33, and a first wavelength converting member 38a. The first light-emitting element 31 is configured to emit a first light emission Le1 having a first peak wavelength. The second light-emitting element 32 is configured to emit a second light emission Le2 having a second peak wavelength. The third light-emitting element 33 is configured to emit a third light emission Le3 having a third peak wavelength.

[0056] In the example of FIG. 8 , the first peak wavelength is shorter than the second peak wavelength. The third peak wavelength is shorter than the second peak wavelength. The first wavelength conversion member 38a is configured to convert the wavelength of at least a portion of the first light emission Le1 incident on the first wavelength conversion member 38a and emit the first converted light Lc1. The peak wavelength of the first converted light Lc1 is longer than the second peak wavelength. The first light emission Le1 may be, for example, blue light. The second light emission Le2 may be, for example, green light. The third light emission Le3 may be, for example, blue light. The first converted light Lc1 may be, for example, red. The first light L1 is obtained by combining these lights. Such light-emitting elements and wavelength conversion members may provide light in a wide chromaticity range. These light-emitting elements may include, for example, LEDs. The light-emitting characteristics of the third light-emitting element 33 may be substantially the same as those of the first light-emitting element 31. The light-emitting characteristics of the third light-emitting element 33 may be different from those of the first light-emitting element 31.

[0057] The third light-emitting section 13 may have a configuration similar to that of the first light-emitting section 11. For example, each of the first light-emitting section 11 and the third light-emitting section 13 may include the first light-emitting element 31, the second light-emitting element 32, the third light-emitting element 33, and the first wavelength converting member 38a described with reference to FIG.

[0058] 8, the first wavelength converting member 38a may include at least one selected from the group consisting of a KSF phosphor and a quantum dot element. For example, the wavelength can be converted with high efficiency. A wide chromaticity range can be effectively obtained.

[0059] FIG. 9 is a schematic view illustrating a part of the light source device according to the first embodiment. As shown in FIG. 9, the first light-emitting unit 11 may include a first light-emitting element 31, a second light-emitting element 32, and a first wavelength conversion member 38a. The first light-emitting element 31 is configured to emit a first light emission Le1 having a first peak wavelength. The second light-emitting element 32 is configured to emit a second light emission Le2 having a second peak wavelength. In the example of FIG. 9, the first peak wavelength is shorter than the second peak wavelength. The first wavelength conversion member 38a is configured to convert the wavelength of at least a portion of the first light emission Le1 incident on the first wavelength conversion member 38a and emit the first converted light Lc1. The peak wavelength of the first converted light Lc1 is longer than the second peak wavelength. The first light emission Le1 may be, for example, blue light. The second light emission Le2 may be, for example, green light. The first converted light Lc1 may be, for example, red light. The first light L1 is obtained by combining these lights. Such light-emitting elements and wavelength conversion members may provide light with a wide chromaticity range. These light-emitting elements may include, for example, LEDs. The third light-emitting section 13 may have a configuration similar to that of the first light-emitting section 11. For example, each of the first light-emitting section 11 and the third light-emitting section 13 may include the first light-emitting element 31, the second light-emitting element 32, and the first wavelength converting member 38a described with reference to FIG.

[0060] 9, the first wavelength converting member 38a may include at least one selected from the group consisting of a KSF phosphor and a quantum dot element. For example, the wavelength can be converted with high efficiency. A wide chromaticity range can be effectively obtained.

[0061] FIG. 10 is a schematic view illustrating a part of the light source device according to the first embodiment. In the example of FIG. 10, the second light-emitting unit 12 includes a fourth light-emitting element 34 and a second wavelength converting member 38b. The fourth light-emitting element 34 is configured to emit fourth light Le4 having a fourth peak wavelength. The second wavelength converting member 38b is configured to convert the wavelength of at least a portion of the fourth light Le4 incident on the second wavelength converting member 38b and emit second converted light Lc2. The peak wavelength of the second converted light Lc2 is longer than the fourth peak wavelength. The second light L2 is obtained by combining the fourth light Le4 and the second converted light Lc2. A narrow chromaticity range is efficiently obtained.

[0062] The second light L2 may be, for example, substantially achromatic. The second light L2 may be, for example, substantially white. For example, the fourth emission Le4 may be blue light. The second wavelength conversion member 38b may include, for example, at least one selected from the group consisting of a YAG phosphor and a yellow silicate phosphor. For example, substantially white light can be obtained with high efficiency in the second light L2 based on the fourth emission Le4 and the second converted light Lc2.

[0063] The fourth light-emitting section 14 may have a configuration similar to that of the second light-emitting section 12. For example, each of the second light-emitting section 12 and the fourth light-emitting section 14 may include the fourth light-emitting element 34 and the second wavelength converting member 38b described with reference to FIG.

[0064] At least one of the first light-emitting element 31, the second light-emitting element 32, the third light-emitting element 33, and the fourth light-emitting element 34 may include an LED.

[0065] (Second embodiment) A display device 210 according to the second embodiment (see FIG. 2) includes the light source device 110 according to the first embodiment and a display panel 80. As described with reference to FIG. 2, the display panel 80 includes a first display region 81 and a second display region 82. The direction from the first light-emitting component 21 to the first display region 81 is along a third direction D3 from the light-emitting panel 10P to the display panel 80. The direction from the second light-emitting component 22 to the second display region 82 is along the third direction D3.

[0066] The control unit 70 may control the operation of the light-emitting panel 10P in accordance with the display content displayed on the display panel 80.

[0067] For example, the control unit 70 may be configured to perform the above-mentioned first operation when the first display chromaticity area of ​​the first image displayed in the first display area 81 is wider than the second display chromaticity area of ​​the second image displayed in the second display area 82.

[0068] For example, light with a wide chromaticity range or light with a narrow chromaticity range can be switched depending on the content of the image displayed on the display panel 80. This allows, for example, a display with high color reproducibility and high efficiency to be obtained. For example, power consumption can be reduced.

[0069] FIG. 11 is a schematic cross-sectional view illustrating the display device according to the second embodiment. 11, in a display device 210, a display panel 80 is overlapped with a light-emitting panel 10P. The light-emitting panel 10P includes a plurality of light-emitting components 20. The display panel 80 includes a plurality of pixels 85p. The plurality of pixels 85p are provided corresponding to one of the plurality of light-emitting components 20.

[0070] For example, the first display area 81 corresponding to the first light emitting component 21 includes a plurality of pixels 85p. For example, the second display area 82 corresponding to the second light emitting component 22 includes another plurality of pixels 85p.

[0071] For example, when the chromaticity range of the image displayed in the first display area 81 is wide, the first light-emitting component 21 emits light in a wide chromaticity range. When the chromaticity range of the image displayed in the second display area 82 is narrow, the second light-emitting component 22 emits light in a narrow chromaticity range. For example, high efficiency can be achieved in a narrow chromaticity range. For example, low power consumption can be achieved.

[0072] As shown in FIG. 11 , the light-emitting panel 10P may include a partition 28. The partition 28 is provided between one of the plurality of light-emitting components 20 and another of the plurality of light-emitting components 20. For example, the partition 28 prevents light emitted from one of the plurality of light-emitting components 20 from traveling to a light-emitting region of another of the plurality of light-emitting components 20 adjacent thereto. For example, the partition 28 reflects (or attenuates) light emitted from each of the plurality of light-emitting components 20. By providing the partition 28, for example, mixing of the light emitted from each of the plurality of light-emitting components 20 is prevented.

[0073] 11, the light source device 110 may include an optical sheet 10L. The optical sheet 10L is provided between the light-emitting panel 10P and the display panel 80. The optical sheet 10L may control the divergence angle of light. For example, higher efficiency may be obtained.

[0074] In the example shown in FIG. 11, the display panel 80 includes a liquid crystal layer 80L. The display panel 80 is a liquid crystal panel. The liquid crystal layer 80L may include, for example, at least one selected from the group consisting of nematic liquid crystal, cholesteric liquid crystal, and smectic liquid crystal. The display mode of the display panel 80 is arbitrary. The display panel 80 may operate in, for example, TN mode, IPS mode, or VA mode.

[0075] As described above, the control unit 70 may perform the first operation when the first display chromaticity region of the first image displayed in the first display region 81 is wider than the second display chromaticity region of the second image displayed in the second display region 82. The control unit 70 may be configured to perform the second operation described above when, for example, the first display chromaticity region becomes narrower than the second display chromaticity region.

[0076] The second operation satisfies the fifth condition or the sixth condition. Under the fifth condition, the control unit 70 supplies a fifth power P5 to the first light-emitting unit 11 and a sixth power P6 to the second light-emitting unit 12. The sixth power P6 is greater than the fifth power P5. Under the sixth condition, the control unit 70 does not supply power to the first light-emitting unit 11 and supplies the sixth power P6 to the second light-emitting unit 12.

[0077] For example, when the first display chromaticity range of the first image displayed in the first display area 81 becomes narrower than the second display chromaticity range of the second image displayed in the second display area 82, the control unit 70 performs the second operation to cause the first light-emitting component 21 to emit light having a narrower chromaticity range. On the other hand, the second light-emitting component 22 emits light having a wider chromaticity range than the light emitted from the first light-emitting component.

[0078] The control unit 70 may be configured to perform a third operation when the third display chromaticity range of the third image displayed in the first display area 81 becomes narrower than the first display chromaticity range. In the third operation, the control unit 70 supplies a seventh power P7 to the first light-emitting unit 11 and an eighth power P8 to the second light-emitting unit 12. The eighth power P8 is equal to or greater than the seventh power P7. The seventh power P7 may be the same as the first power P1. By using light with a narrow chromaticity range corresponding to the third display chromaticity range of the narrow chromaticity range, for example, an efficient display is possible. For example, a display with low power consumption is possible.

[0079] FIG. 12 is a schematic plan view illustrating a part of the display device according to the second embodiment. 12 illustrates one of the multiple pixels 85p included in the first display region 81 or the second display region 82. Each of the first display region 81 and the second display region 82 may include a red pixel 85a, a green pixel 85b, and a blue pixel 85c. Any color can be displayed.

[0080] FIG. 13 is a schematic plan view illustrating a part of the display device according to the second embodiment. 13 illustrates one of a plurality of pixels 85p included in the first display region 81 or the second display region 82. Each of the first display region 81 and the second display region 82 may include a red pixel 85a, a green pixel 85b, a blue pixel 85c, and a white pixel 85d, enabling a bright display.

[0081] For example, the control unit 70 may be configured to perform the first operation when the white pixel 85d included in the first display region 81 is in a dark state. When the white pixel 85d included in the first display region 81 is in a dark state, for example, a display with a wide chromaticity range is performed. In this case, the first operation causes the first light-emitting component 21 corresponding to the first display region 81 to emit light with a wide chromaticity range. For example, a display with high color rendering properties is possible.

[0082] For example, the control unit 70 may be configured to perform the third operation when the white pixel 85d included in the first display region 81 is in a non-dark state (bright state). When the white pixel 85d included in the first display region 81 is in a non-dark state (bright state), for example, a display with a narrow chromaticity range is performed. In this case, the first light-emitting component 21 corresponding to the first display region 81 emits light with a narrow chromaticity range by the third operation. For example, a display with low power consumption is possible.

[0083] The control unit 70 may be configured to switch between the first operation and the second operation depending on whether the white pixels 85d included in the display area are in a dark state or a non-dark state.

[0084] For example, the plurality of first display areas 81 may correspond to the first light emitting components 21. The plurality of second display areas 82 may correspond to the second light emitting components 22.

[0085] FIG. 14 is a schematic view illustrating the display device according to the second embodiment. 14, the control unit 70 includes the already-described first circuit 71, second circuit 72, and third circuit 73. For example, the control unit 70 may include a fourth circuit 74, a fifth circuit 75, and a sixth circuit 76.

[0086] For example, the image signal Sc0 is supplied to the fifth circuit 75. The fifth circuit 75 is configured to generate a first control signal S1 and a second control signal S2 based on the image signal Sc0.

[0087] The first control signal S1 is, for example, a light source control signal. The first control signal S1 is supplied to a sixth circuit 76. The sixth circuit 76 generates a first light source control signal Sc1, a second light source control signal Sc2, and a third light source control signal Sc3 based on the first control signal S1. The first light source control signal Sc1 is supplied to a first circuit 71. The second light source control signal Sc2 is supplied to a second circuit 72. The third light source control signal Sc3 is supplied to a third circuit 73. These light source control signals cause various operations in the light source device 110 to be performed. The first to third operations described above are performed by the control unit 70.

[0088] The fifth circuit 75 supplies a second control signal S2 to the fourth circuit 74. The second control signal S2 is, for example, a display panel control signal. The fourth circuit 74 generates a display control signal Sc4 based on the second control signal S2. The display control signal Sc4 is supplied to a drive circuit of the display panel 80. A desired image is displayed on the display panel 80.

[0089] Embodiments may include the following features. (Configuration 1) a light emitting panel including a first light emitting component and a second light emitting component; A control unit; Equipped with the first light emitting component includes a first light emitting portion and a second light emitting portion; the second light emitting component includes a third light emitting portion and a fourth light emitting portion; the first light-emitting unit is configured to emit a first light having a first chromaticity range; the second light-emitting unit is configured to emit second light having a second chromaticity range; the third light-emitting unit is configured to emit third light having the first chromaticity region; the fourth light-emitting unit is configured to emit fourth light having the second chromaticity region; the second chromaticity gamut is included in the first chromaticity gamut, a part of the first chromaticity gamut is not included in the second chromaticity gamut; the control unit is configured to perform a first operation that satisfies any one of a first condition, a second condition, a third condition, and a fourth condition; Under the first condition, the control unit supplies a first power to the first light-emitting unit, a second power to the second light-emitting unit, the second power being smaller than the first power, a third power to the third light-emitting unit, and a fourth power to the fourth light-emitting unit, the third power being smaller than the fourth power; under the second condition, the control unit supplies the first power to the first light-emitting unit, supplies the second power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit; under the third condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, supplies the third power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit; In the fourth condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit.

[0090] (Configuration 2) a second efficiency of the second light-emitting unit is higher than a first efficiency of the first light-emitting unit; 2. The light source device according to configuration 1, wherein a fourth efficiency of the fourth light-emitting section is higher than a third efficiency of the third light-emitting section.

[0091] (Configuration 3) the control unit is configured to further perform a second action that satisfies a fifth condition or a sixth condition; under the fifth condition, the control unit supplies a fifth power to the first light-emitting unit and a sixth power to the second light-emitting unit, the sixth power being greater than the fifth power; 3. The light source device according to configuration 1 or 2, wherein, in the sixth condition, the control unit does not supply power to the first light-emitting unit, and supplies the sixth power to the second light-emitting unit.

[0092] (Configuration 4) the control unit is further configured to perform a third operation; 3. The light source device of claim 1, wherein in the third operation, the control unit supplies a seventh power to the first light-emitting unit and an eighth power to the second light-emitting unit, the eighth power being equal to or greater than the seventh power.

[0093] (Configuration 5) Each of the first light-emitting unit and the third light-emitting unit is a first light-emitting element configured to emit a first light emission having a first peak wavelength; a second light-emitting element configured to emit second light having a second peak wavelength; a third light emitting element configured to emit third light having a third peak wavelength; Including, the first peak wavelength is longer than the second peak wavelength, 2. The light source device according to configuration 1, wherein the second peak wavelength is longer than the third peak wavelength.

[0094] (Configuration 6) Each of the first light-emitting unit and the third light-emitting unit is a first light-emitting element configured to emit a first light emission having a first peak wavelength; a second light-emitting element configured to emit second light having a second peak wavelength; a first wavelength conversion member; Including, the first peak wavelength is shorter than the second peak wavelength, the first wavelength conversion member is configured to convert the wavelength of at least a part of the first emitted light incident on the first wavelength conversion member and emit first converted light; 2. The light source device according to configuration 1, wherein the peak wavelength of the first converted light is longer than the second peak wavelength.

[0095] (Configuration 7) 7. The light source device according to configuration 6, wherein the first wavelength conversion member includes at least one selected from the group consisting of a KSF phosphor and a quantum dot element.

[0096] (Configuration 8) Each of the second light-emitting unit and the fourth light-emitting unit is a fourth light-emitting element configured to emit fourth light having a fourth peak wavelength; A second wavelength conversion member; Including, the second wavelength conversion member is configured to convert the wavelength of at least a part of the fourth emitted light incident on the second wavelength conversion member and emit second converted light; 8. The light source device according to any one of configurations 5 to 7, wherein the peak wavelength of the second converted light is longer than the fourth peak wavelength.

[0097] (Configuration 9) the fourth emission is blue light; 9. The light source device according to configuration 8, wherein the second wavelength conversion member includes at least one selected from the group consisting of a YAG phosphor and a yellow silicate phosphor.

[0098] (Configuration 10) 10. The light source device according to configuration 8 or 9, wherein at least one of the first light-emitting element, the second light-emitting element, and the fourth light-emitting element includes an LED.

[0099] (Configuration 11) The light-emitting panel is a first scanning line and a second scanning line along a first direction; a first driving line, a second driving line, a third driving line, and a fourth driving line extending along a second direction intersecting the first direction; further comprising the first scanning line is electrically connected to the first light emitting unit and the second light emitting unit; the second scanning line is electrically connected to the third light emitting unit and the fourth light emitting unit; the first driving line is electrically connected to the first light-emitting unit; the second driving line is electrically connected to the second light-emitting unit; the third driving line is electrically connected to the third light-emitting unit; the fourth driving line is electrically connected to the fourth light-emitting unit, The light source device according to any one of configurations 1 to 10, wherein the control unit is electrically connected to the first scanning line, the second scanning line, the first driving line, the second driving line, the third driving line, and the fourth driving line.

[0100] (Configuration 12) It has multiple light-emitting components arranged two-dimensionally, the first light-emitting component is one of the plurality of light-emitting components; 12. The light source device according to any one of configurations 1 to 11, wherein the second light emitting component is another one of the plurality of light emitting components.

[0101] (Configuration 13) the light source device according to configuration 1 or 2; A display panel; Equipped with the display panel includes a first display area and a second display area; a direction from the first light-emitting component to the first display area is along a third direction from the light-emitting panel to the display panel; a direction from the second light emitting component to the second display area is along the third direction; A display device wherein the control unit is configured to perform the first operation when a first display chromaticity range of a first image displayed in the first display area is wider than a second display chromaticity range of a second image displayed in the second display area.

[0102] (Configuration 14) the control unit is configured to perform a second operation when the first display chromaticity gamut becomes narrower than the second display chromaticity gamut; the second action satisfies a fifth or sixth condition; under the fifth condition, the control unit supplies a fifth power to the first light-emitting unit and a sixth power to the second light-emitting unit, the sixth power being greater than the fifth power; 14. The display device according to configuration 13, wherein, in the sixth condition, the control unit does not supply power to the first light-emitting unit, and supplies the sixth power to the second light-emitting unit.

[0103] (Configuration 15) the control unit is configured to perform a third operation when a third display chromaticity range of a third image displayed in the first display area becomes narrower than the first display chromaticity range; The display device described in configuration 13, wherein in the third operation, the control unit supplies a seventh power to the first light-emitting unit and an eighth power to the second light-emitting unit, the eighth power being equal to or greater than the seventh power.

[0104] (Configuration 16) 14. The display device of configuration 13, wherein each of the first display region and the second display region includes red pixels, green pixels, and blue pixels.

[0105] (Configuration 17) 16. The display device of configuration 15, wherein each of the first display region and the second display region includes red pixels, green pixels, blue pixels, and white pixels.

[0106] (Configuration 18) 18. The display device according to configuration 17, wherein the control unit is configured to perform the first operation when the white pixels included in the first display region are in a dark state.

[0107] (Configuration 19) 19. The display device of configuration 18, wherein the controller is configured to perform the third operation when the white pixels included in the first display region are in a non-dark state.

[0108] (Configuration 20) A plurality of the first display areas correspond to the first light-emitting components; 14. The display device of claim 13, wherein a plurality of the second display regions correspond to the second light-emitting components.

[0109] According to the embodiments, a light source device and a display device that can improve characteristics are provided.

[0110] In this specification, "vertical" and "parallel" do not only mean strictly vertical and strictly parallel, but also include variations in the manufacturing process, and may mean substantially vertical and substantially parallel.

[0111] The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. For example, the specific configurations of each element included in a light source device or a display device, such as a light-emitting panel, a light-emitting component, a light-emitting unit, a light-emitting element, a wavelength conversion member, a control unit, and a display panel, are within the scope of the present invention as long as a person skilled in the art can implement the present invention in a similar manner and obtain similar effects by appropriately selecting them from known ranges.

[0112] Furthermore, any combination of two or more elements of each specific example within the scope of technical feasibility is also included within the scope of the present invention as long as it includes the gist of the present invention.

[0113] In addition, all light source devices and display devices that can be implemented by a person skilled in the art by making appropriate design modifications based on the light source device and display device described above as embodiments of the present invention also fall within the scope of the present invention, as long as they include the gist of the present invention.

[0114] In addition, within the scope of the concept of the present invention, a person skilled in the art may come up with various modifications and alterations, and it will be understood that these modifications and alterations also fall within the scope of the present invention. [Explanation of symbols]

[0115] 10L: optical sheet, 10P: light-emitting panel, 11-14: first to fourth light-emitting units, 11R, 12R: first and second chromaticity regions, 11S, 12S: first and second spectral distributions, 20: light-emitting component, 21, 22: first and second light-emitting component, 28: partition wall, 31-34: first to fourth light-emitting elements, 38a, 38b: first and second wavelength conversion members, 51, 52: first and second type driving lines, 51a: first driving line, 51c: third driving line, 52b: second driving line, 52d: fourth driving line, 53: scanning line, 53a, 53b: first and second scanning lines, 70: control unit, 71-76: first to sixth circuits, 80: display panel, 80L: liquid crystal layer, 81, 82: first and second display regions, 85a: red pixel, 85b: green pixel, 85c: blue pixel, 85d: white pixel, 85p: pixel, 110: light source device, 210: display device, D1 to D3: first to third directions, I1: intensity, L1 to L4: first to fourth lights, Lc1, Lc2: first and second converted lights, Le1 to Le4: first to fourth emitted lights, Sc0: image signal, S1, S2: first and second control signals, Sc1 to Sc3: first to third light source control signals, Sc4: display control signal, λ: wavelength

Claims

1. a light emitting panel including a first light emitting component and a second light emitting component; A control unit; Equipped with the first light emitting component includes a first light emitting portion and a second light emitting portion; the second light emitting component includes a third light emitting portion and a fourth light emitting portion; the first light-emitting unit is configured to emit first light having a first chromaticity range; the second light-emitting unit is configured to emit second light having a second chromaticity range; the third light-emitting unit is configured to emit third light having the first chromaticity region, the fourth light-emitting unit is configured to emit fourth light having the second chromaticity region, the second chromaticity gamut is included in the first chromaticity gamut, a part of the first chromaticity gamut is not included in the second chromaticity gamut; the control unit is configured to perform a first operation that satisfies any one of a first condition, a second condition, a third condition, and a fourth condition; under the first condition, the control unit supplies a first power to the first light-emitting unit, a second power to the second light-emitting unit, the second power being smaller than the first power, a third power to the third light-emitting unit, and a fourth power to the fourth light-emitting unit, the third power being smaller than the fourth power; under the second condition, the control unit supplies the first power to the first light-emitting unit, supplies the second power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit; under the third condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, supplies the third power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit; In the fourth condition, the control unit supplies the first power to the first light-emitting unit, does not supply power to the second light-emitting unit, does not supply power to the third light-emitting unit, and supplies the fourth power to the fourth light-emitting unit.

2. a second efficiency of the second light-emitting unit is higher than a first efficiency of the first light-emitting unit; The light source device according to claim 1 , wherein a fourth efficiency of the fourth light-emitting section is higher than a third efficiency of the third light-emitting section.

3. the control unit is configured to further perform a second action that satisfies a fifth condition or a sixth condition; In the fifth condition, the control unit supplies a fifth power to the first light-emitting unit and a sixth power to the second light-emitting unit, the sixth power being greater than the fifth power; The light source device according to claim 1 , wherein, in the sixth condition, the control unit does not supply power to the first light-emitting unit, and supplies the sixth power to the second light-emitting unit.

4. the control unit is further configured to perform a third operation; 3. The light source device according to claim 1, wherein in the third operation, the control unit supplies a seventh power to the first light-emitting unit and an eighth power to the second light-emitting unit, the eighth power being equal to or greater than the seventh power.

5. Each of the first light-emitting unit and the third light-emitting unit is a first light-emitting element configured to emit first light having a first peak wavelength; a second light-emitting element configured to emit second light having a second peak wavelength; a third light-emitting element configured to emit third light having a third peak wavelength; Including, the first peak wavelength is longer than the second peak wavelength, The light source device according to claim 1 , wherein the second peak wavelength is longer than the third peak wavelength.

6. Each of the first light-emitting unit and the third light-emitting unit is a first light-emitting element configured to emit first light having a first peak wavelength; a second light-emitting element configured to emit second light having a second peak wavelength; a first wavelength conversion member; Including, the first peak wavelength is shorter than the second peak wavelength, the first wavelength conversion member is configured to convert a wavelength of at least a part of the first emitted light incident on the first wavelength conversion member and emit first converted light, The light source device according to claim 1 , wherein the peak wavelength of the first converted light is longer than the second peak wavelength.

7. The light source device according to claim 6 , wherein the first wavelength conversion member includes at least one selected from the group consisting of a KSF phosphor and a quantum dot element.

8. Each of the second light-emitting unit and the fourth light-emitting unit is a fourth light-emitting element configured to emit fourth light having a fourth peak wavelength; A second wavelength conversion member; Including, the second wavelength conversion member is configured to convert a wavelength of at least a part of the fourth emitted light incident on the second wavelength conversion member and emit second converted light, 8. The light source device according to claim 5, wherein the peak wavelength of the second converted light is longer than the fourth peak wavelength.

9. the fourth light emission is blue light; 9. The light source device according to claim 8, wherein the second wavelength conversion member includes at least one selected from the group consisting of a YAG phosphor and a yellow silicate phosphor.

10. The light source device according to claim 8 , wherein at least one of the first light-emitting element, the second light-emitting element, and the fourth light-emitting element includes an LED.

11. The light-emitting panel is a first scanning line and a second scanning line along a first direction; a first driving line, a second driving line, a third driving line, and a fourth driving line extending along a second direction intersecting the first direction; further comprising the first scanning line is electrically connected to the first light-emitting unit and the second light-emitting unit; the second scanning line is electrically connected to the third light emitting unit and the fourth light emitting unit; the first driving line is electrically connected to the first light-emitting unit, the second driving line is electrically connected to the second light-emitting unit, the third driving line is electrically connected to the third light-emitting unit, the fourth driving line is electrically connected to the fourth light-emitting unit, The light source device according to claim 1 , wherein the control unit is electrically connected to the first scanning line, the second scanning line, the first driving line, the second driving line, the third driving line, and the fourth driving line.

12. A plurality of light emitting components are arranged two-dimensionally, the first light emitting component is one of the plurality of light emitting components; The light source device according to claim 1 , wherein the second light emitting component is another one of the plurality of light emitting components.

13. The light source device according to claim 1 or 2; A display panel; Equipped with the display panel includes a first display area and a second display area; a direction from the first light emitting component to the first display area is along a third direction from the light emitting panel to the display panel; a direction from the second light emitting component to the second display area is along the third direction; A display device wherein the control unit is configured to perform the first operation when the first display chromaticity range of the first image displayed in the first display area is wider than the second display chromaticity range of the second image displayed in the second display area.

14. the control unit is configured to perform a second operation when the first display chromaticity gamut becomes narrower than the second display chromaticity gamut; the second action satisfies a fifth or sixth condition; In the fifth condition, the control unit supplies a fifth power to the first light-emitting unit and a sixth power to the second light-emitting unit, the sixth power being greater than the fifth power; The display device according to claim 13 , wherein, in the sixth condition, the control unit does not supply power to the first light-emitting unit, and supplies the sixth power to the second light-emitting unit.

15. the control unit is configured to perform a third operation when a third display chromaticity range of a third image displayed in the first display area becomes narrower than the first display chromaticity range; 14. The display device of claim 13, wherein in the third operation, the control unit supplies seventh power to the first light-emitting unit and eighth power to the second light-emitting unit, the eighth power being equal to or greater than the seventh power.

16. The display device of claim 13 , wherein each of the first display region and the second display region includes red, green, and blue pixels.

17. The display device of claim 15 , wherein each of the first display region and the second display region includes red pixels, green pixels, blue pixels, and white pixels.

18. The display device of claim 17 , wherein the control unit is configured to perform the first operation when the white pixels included in the first display region are in a dark state.

19. The display device of claim 18 , wherein the control unit is configured to perform the third operation when the white pixels included in the first display region are in a non-dark state.

20. a plurality of the first display areas corresponding to the first light emitting components; The display device according to claim 13 , wherein a plurality of the second display regions correspond to the second light emitting components.

Images