Display device

Abstract

In a display device including a first sub-pixel, a second sub-pixel, and a third sub-pixel, first input data (ri) corresponding to the first sub-pixel, second input data (gi) corresponding to the second sub-pixel, and third input data (bi) corresponding to the third sub-pixel are used to generate first output data (rs) corresponding to a first data voltage supplied to the first sub-pixel. The first sub-pixel includes a quantum dot light-emitting layer that emits light of a first color, the second sub-pixel includes a quantum dot light-emitting layer that emits light of a second color, and the third sub-pixel includes a quantum dot light-emitting layer that emits light of a third color.

Description

Technical Field

[0001] The present invention relates to a display device. Background Art

[0002] In Patent Document 1, a method of using quantum dots that absorb excitation light and emit light having a wavelength longer than that of the excitation light for a color filter is disclosed.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Laid-Open Gazette "Tokukai 2019-109515" Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] When a quantum dot light-emitting layer is provided in a sub-pixel of a display device, it has been found that a part of the light emitted from the quantum dot light-emitting layer is absorbed by the quantum dot light-emitting layer itself and re-emitted. This phenomenon is absorption on the short wavelength side and re-emission on the long wavelength side. Therefore, particularly in high gray scale display, the emission wavelength characteristics shift to the long wavelength side, causing color shift.

[0008] Solution to the Problem

[0009] A display device according to one aspect of the present disclosure includes: a first sub-pixel including a quantum dot light-emitting layer that emits light of a first color; a second sub-pixel including a quantum dot light-emitting layer that emits light of a second color different from the light of the first color; a third sub-pixel including a quantum dot light-emitting layer that emits light of a third color different from the light of the first color and the light of the second color; and a data processing circuit that receives first input data corresponding to the first sub-pixel, second input data corresponding to the second sub-pixel, and third input data corresponding to the third sub-pixel, and the data processing circuit uses the first input data, the second input data, and the third input data to generate first output data corresponding to a first data voltage supplied to the first sub-pixel.

[0010] Advantageous Effects of the Invention

[0011] According to one aspect of the present invention, it is possible to suppress color shift in a display device including a quantum dot light-emitting layer in each sub-pixel. Brief Description of the Drawings

[0012] Figure 1 It is a block diagram showing the configuration of the display device of the first embodiment.

[0013] Figure 2(a) is a top view schematic diagram showing the configuration of sub-pixels of the first embodiment. Figure 2 (b) is a cross-sectional view showing the configuration of the sub-pixels.

[0014] Figure 3 is a block diagram showing the processing steps of the data processing circuit of the first embodiment.

[0015] Figure 4 is Figure 3 a graph showing an example of the correction processing.

[0016] Figure 5 is a block diagram showing the processing steps of the data processing circuit of the second embodiment.

[0017] Figure 6 is a block diagram showing the processing steps of the data processing circuit of the third embodiment.

[0018] Figure 7 is a block diagram showing the processing steps of the data processing circuit of the fourth embodiment.

[0019] Figure 8 is a block diagram showing the processing steps of the data processing circuit of the fifth embodiment.

[0020] Figure 9 (a) is a schematic diagram showing the arrangement of sub-pixels of the sixth embodiment. Figure 9 (b) is a block diagram showing the processing steps of the data processing circuit of the sixth embodiment. Detailed Embodiments

[0021] [First Embodiment]

[0022] Figure 1 is a block diagram showing the configuration of the display device of the first embodiment. Figure 2 (a) is a top view schematic diagram showing the configuration of sub-pixels of the first embodiment. Figure 2 (b) is a cross-sectional view showing the configuration of the sub-pixels. As Figure 1 shown, the display device 10 includes a data processing circuit 11 and a display panel 13. The display panel 13 is provided with a plurality of sub-pixels including a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3, and a driving circuit 12 for driving these sub-pixels.

[0023] The data processing circuit 11 receives input data to generate output data. The driving circuit 12 receives the output data from the data processing circuit 11 to generate data voltages supplied to the plurality of sub-pixels including sub-pixels P1 to P3.

[0024] As Figure 2As shown, the display panel 13 includes a thin film transistor layer 15 and a light emitting element layer 20. In the light emitting element layer 20, a lower electrode 22 (anode), an edge covering film 23 covering the edge of the lower electrode 22, a hole transport layer 24p, a quantum dot light emitting layer 24r·24g·24b including quantum dots, an electron transport layer 24n, and a common electrode 25 (cathode) are provided in this order from the lower layer side. The lower electrode 22 is formed of, for example, a laminate of ITO (Indium Tin Oxide) and Ag (silver) or an Ag-containing alloy, and has light reflectivity. The common electrode 25 is formed of, for example, a metal thin film such as a magnesium-silver alloy, and has light transmissivity.

[0025] The first sub-pixel P1, the second sub-pixel P2, and the third sub-pixel P3 constitute a pixel PX, and the second sub-pixel P2 is adjacent to the first sub-pixel P1 and the third sub-pixel P3. In addition, the first sub-pixel P1 and the second sub-pixel P2 may belong to the same pixel, and the third sub-pixel P3 may also belong to a different pixel.

[0026] The first sub-pixel P1 includes a quantum dot light emitting layer 24r that emits light of a first color, the second sub-pixel P2 includes a quantum dot light emitting layer 24g that emits light of a second color, and the third sub-pixel P3 includes a quantum dot light emitting layer 24b that emits light of a third color. In the first embodiment, the light of the first color is red light, the light of the second color is green light, and the light of the third color is blue light.

[0027] Holes and electrons are recombined in the quantum dot light emitting layers 24r·24g·24b by a drive current between the lower electrode 22 and the common electrode 25, and light is emitted during the process in which excitons generated thereby transition from the conduction band level to the valence band level of the quantum dots.

[0028] Figure 3 is a block diagram showing the processing steps of the data processing circuit of the first embodiment. The data processing circuit 11 sequentially performs γ processing, correction processing, and inverse γ processing on a first input data ri corresponding to the first sub-pixel P1, a second input data gi corresponding to the second sub-pixel P2, and a third input data bi corresponding to the third sub-pixel P3, thereby generating a first output data rs corresponding to a first data voltage supplied to the first sub-pixel P1, a second output data gs corresponding to a second data voltage supplied to the second sub-pixel P2, and a third output data bs corresponding to a third data voltage supplied to the third sub-pixel P3. Here, the first input data ri corresponding to the first sub-pixel P1 is, for example, data of a gray scale value displayed by the first sub-pixel P1. The same applies to the second input data gi and the third input data bi.

[0029] In the gamma process, optically linear data, namely data rj (first transformed data), data gj (second transformed data), and data bj (third transformed data), are generated from first input data ri, second input data gi, and third input data bi. Specifically, for the gray levels represented by the first input data ri, the second input data gi, and the third input data bi, powers with an exponent of, for example, γ = 2.2 are calculated respectively.

[0030] In the correction process, data rk·gk·bk corrected by data rj·gj·bj are generated. Specifically, first, a correction value Δrg of data rj based on data gj is obtained using lookup table LUT1_Rg, a correction value Δrb of data rj based on data bj is obtained using lookup table LUT1_Rb, a correction value Δgr of data gj based on data rj is obtained using lookup table LUT1_Gr, a correction value Δgb of data gj based on data bj is obtained using lookup table LUT1_Gb, a correction value Δbr of data bj based on data rj is obtained using lookup table LUT1_Br, and a correction value Δbg of data bj based on data gj is obtained using lookup table LUT1_Bg.

[0031] Next, data rk (first corrected data) is generated by performing gain adjustment (brightness adjustment process) on the sum of the value represented by data rj and Δrg and Δrb, data gk (second corrected data) is generated by performing gain adjustment (brightness adjustment process) on the sum of the value represented by data gj and Δgr and Δgb, and data bk (third corrected data) is generated by performing gain adjustment (brightness adjustment process) on the sum of the value represented by data bj and Δbr and Δbg. In the gain adjustment, a coefficient (for example, the value represented by coefficient data gj / the value represented by data gk) is multiplied.

[0032] In the inverse gamma process, first output data rs, second output data gs, and third output data bs representing gray levels are generated from data rk·gk·bk. Specifically, powers with an exponent of, for example, inverse γ = -2.2 are calculated respectively for the values represented by data rk, data gk, and data bk.

[0033] Figure 4 is Figure 3 a graph showing an example of the correction process. As Figure 4 shown in (a) of Figure 4 this, Figure 4 and (c) of this, the wavelength band of the light of the first color (red light) is on the long-wavelength side compared to the wavelength band of the light of the second color (green light), and the wavelength band of the light of the second color is on the long-wavelength side compared to the wavelength band of the light of the third color (blue light).

[0034] Regarding Figure 3 for Δgr and Δbr, Δgr≥0 and Δbr≥0, when the gray level of the first input data ri is higher than the center of all gray levels, the absolute values of Δgr and Δbr are larger than when it is lower. As Figure 4 shown in (a) of

[0035] For example, when the gray level of the first input data ri is Tc which is lower than the center of all gray levels, the gray level of the second input data gi is Tm, and the gray level of the third input data bi is Tn, the gray level of the second output data gs is TGc and the gray level of the third output data bs is TBc. And when the gray level of the first input data ri is Td which is higher than the center of all gray levels, the gray level of the second input data gi is Tm, and the gray level of the third input data bi is Tn, the gray level of the second output data gs is TGd and the gray level of the third output data bs is TBd, then TGc<TGd and TBc<TBd hold.

[0036] Regarding Figure 3 for Δrg and Δbg, Δrg≤0 and Δbg≥0, when the gray level of the second input data gi is higher than the center of all gray levels, the absolute values of Δrg and Δbg are larger than when it is lower. As Figure 4 shown in (b) of

[0037] For example, when the gray level of the first input data ri is Tm, the gray level of the second input data gi is Te below the center of the full gray level, and the gray level of the third input data bi is Tn, the gray level of the first output data rs is TRe, and the gray level of the third output data bs is TBe. When the gray level of the first input data ri is Tm, the gray level of the second input data gi is Tf above the center of the full gray level, and the gray level of the third input data bi is Tn, the gray level of the first output data rs is TRf, and the gray level of the third output data bs is TBf, then TRe > TRf and TBe < TBf hold.

[0038] Regarding Figure 3 For Δrb and Δgb of , Δrb ≤ 0 and Δgb ≤ 0. When the gray level of the third input data bi is higher than the center of all gray levels, the absolute values of Δrb and Δgb are larger than those in the case of being lower. As Figure 4 As shown in (c) of , when the gray level of the third sub-pixel P3 is high (high brightness), the emission wavelength characteristic of the third sub-pixel P3 (blue) shifts toward the long wavelength side. Therefore, by performing correction to reduce the gray levels (reduce brightness) of the first sub-pixel P1 (red) and the second sub-pixel P2 (green), color deviation of the first sub-pixel P1, the second sub-pixel P2, and the third sub-pixel P3 as a whole is suppressed. In addition, the overall brightness deviation caused by the gray level correction of the first sub-pixel P1 and the second sub-pixel P2 will be corrected by gain adjustment.

[0039] For example, when the gray level of the first input data ri is Tm, the gray level of the second input data gi is Tn, and the gray level of the third input data bi is Tp below the center of the full gray level, the gray level of the first output data rs is TRp, and the gray level of the second output data gs is TGp. When the gray level of the first input data ri is Tm, the gray level of the second input data gi is Tn, and the gray level of the third input data bi is Tq above the center of the full gray level, the gray level of the first output data rs is TRq, and the gray level of the second output data gs is TGq, then TRp > TRq and TGp > TGq hold.

[0040] As described above, according to the first embodiment, color deviation of the display device 10 including the quantum dot light emitting layer in each sub-pixel can be suppressed.

[0041] 〔Second Embodiment〕

[0042] Figure 5 It is a block diagram showing the processing procedure of the data processing circuit of the second embodiment. In the second embodiment, a temperature sensor is provided in the display panel 13, and the data processing circuit 11 performs temperature correction.

[0043] Specifically, by making Figure 3The correction values △rg·△rb·△gr·△gb·△br·△bg are multiplied by the temperature coefficient based on the measurement result of the temperature sensor, thereby calculating the correction values △rgU·△rbU·△grU·△gbU·△brU·△bgU.

[0044] In this case, gain adjustment is performed on the addition result of the value represented by the data rj and △rgU and △rbU to generate the data rk, gain adjustment is performed on the addition result of the value represented by the data gj and △grU and △gbU to generate the data gk, and gain adjustment is performed on the addition result of the value represented by the data bj and △brU and △bgU to generate the data bk. Then, inverse γ processing is performed on the data rk·gk·bk to generate the first output data rs, the second output data gs, and the third output data bs.

[0045] In the second embodiment, since temperature correction is performed, color deviation can be suppressed with higher accuracy.

[0046] 〔Third Embodiment〕

[0047] Figure 6 is a block diagram showing the processing steps of the data processing circuit in the third embodiment. In the third embodiment, the data processing circuit 11 performs Figure 3 correction processing (primary correction) to generate the data rk (first correction data), the data gk (second correction data), and the data bk (third correction data), and then performs secondary correction using the data rk·gk·bk.

[0048] Specifically, first, the correction value ΔRg of the data rk based on the data gk is obtained using the look-up table LUT2_Rg, the correction value ΔRb of the data rk based on the data bk is obtained using the look-up table LUT2_Rb, the correction value ΔGr of the data gk based on the data rk is obtained using the look-up table LUT2_Gr, the correction value ΔGb of the data gk based on the data bk is obtained using the look-up table LUT2_Gb, the correction value ΔBr of the data bk based on the data rk is obtained using the look-up table LUT2_Br, and the correction value ΔBg of the data bk based on the data gk is obtained using the look-up table LUT2_Bg.

[0049] Next, gain adjustment is performed on the addition result of the value represented by the data rk and △Rg and △Rb to generate the data Rk, gain adjustment is performed on the addition result of the value represented by the data gk and △Gr and △Gb to generate the data Gk, and gain adjustment is performed on the addition result of the value represented by the data bk and △Br and △Bg to generate the data Bk. In the gain adjustment, a coefficient (for example, the value represented by the coefficient data gk / the value represented by the data Gk) is multiplied.

[0050] Then, perform inverse gamma processing on the data Rk·Gk·Bk to generate a first output data rs, a second output data gs, and a third output data bs.

[0051] In the third embodiment, since secondary correction using the result of primary correction is performed, color deviation can be suppressed with higher accuracy.

[0052] 〔Fourth Embodiment〕

[0053] Figure 7 FIG. is a block diagram showing the processing steps of the data processing circuit according to the fourth embodiment. In the fourth embodiment, the data processing circuit 11 performs correction processing using tristimulus values.

[0054] Specifically, optically linear data rj·gj·bj is generated from the first input data ri, the second input data gi, and the third input data bi, and the data rj·gj·bj is transformed into the XYZ space of stimulus values to obtain data Xj·Yj·Zj (X data·Y data·Z data).

[0055] Next, a correction value Δxy of data Xj based on data Yj is obtained using the look-up table LUT_Xy, a correction value Δxz of data Xj based on data Zj is obtained using the look-up table LUT_Xz, a correction value Δyx of data Yj based on data Xj is obtained using the look-up table LUT_Yx, a correction value Δyz of data yj based on data zj is obtained using the look-up table LUT_Yz, a correction value Δzx of data zj based on data xj is obtained using the look-up table LUT_Zx, and a correction value Δzy of data zj based on data yj is obtained using the look-up table LUT_Zy.

[0056] Next, data XK is generated by performing gain adjustment on the sum result of the value represented by data Xj and △xy and △xz, data YK is generated by performing gain adjustment on the sum result of the value represented by data Yj and △yx and △yz, and data ZK is generated by performing gain adjustment on the sum result of the value represented by data Zj and △zx and △zy. In the gain adjustment, a coefficient (for example, the value represented by coefficient data Zj / the value represented by data ZK) is multiplied.

[0057] In the rgb conversion process, the data XK·YK·ZK in the XYZ space is transformed into the data RK·GK·BK in the rgb space. Then, inverse gamma processing is performed on the data RK·GK·BK to generate a first output data rs, a second output data gs, and a third output data bs.

[0058] In the fourth embodiment, since X data·Y data·Z data is used in the correction processing, color deviation can be suppressed with higher accuracy.

[0059] 〔Fifth Embodiment〕

[0060] Figure 8 FIG. is a block diagram showing the processing steps of the data processing circuit according to the fifth embodiment. In the fifth embodiment, the data processing circuit 11 performs correction processing through matrix operations.

[0061] Specifically, using the optically linear data rj·gj·bj and Figure 8 matrix MT (3 rows and 3 columns) of, calculate rk = A×(rj + gj×R(g) + bj×R(b)), gk = A×(rj×G(r) + gj + bj×G(b)), bk = A×(rj×B(r) + gj×B(g) + bj). Here, R(g) is the correction coefficient of rj based on gj, R(b) is the correction coefficient of rj based on bj, G(r) is the correction coefficient of gj based on rj, G(b) is the correction coefficient of gj based on bj, B(r) is the correction coefficient of bj based on rj, B(g) is the correction coefficient of bj based on gj, and A is the gain adjustment coefficient (for example, the value represented by data gj / the value represented by data gk). Then, perform inverse γ processing on the data rk·gk·bk to generate the first output data rs, the second output data gs, and the third output data bs.

[0062] In the fifth embodiment, since a lookup table is not used in the correction processing and matrix operations are used instead, the memory usage can be reduced.

[0063] 〔Sixth Embodiment〕

[0064] Figure 9 (a) of FIG. is a schematic diagram showing the arrangement of sub-pixels according to the sixth embodiment, Figure 9 (b) of FIG. is a block diagram showing the processing steps of the data processing circuit according to the sixth embodiment. In the sixth embodiment, the data processing circuit 11 uses the first input data ri corresponding to the first sub-pixel P1 (red), the second input data gi corresponding to the second sub-pixel P2 (green), the third input data bi corresponding to the third sub-pixel P3 (blue), the fourth input data Bi corresponding to the fourth sub-pixel P4 (including a quantum dot light-emitting layer that emits blue light), and the fifth input data Gi corresponding to the fifth sub-pixel P5 (including a quantum dot light-emitting layer that emits green light) to generate the first output data rs corresponding to the first data voltage supplied to the first sub-pixel P1, the second output data gs corresponding to the second data voltage supplied to the second sub-pixel P2, and the third output data bs corresponding to the third data voltage supplied to the third sub-pixel P3.

[0065] As Figure 9As shown in (a) of [FIGURE REFERENCE], the first sub-pixel P1 is adjacent to the second sub-pixel P2 and the third sub-pixel P3, the second sub-pixel P2 is adjacent to the first sub-pixel P1 and the fourth sub-pixel P4, and the third sub-pixel P3 is adjacent to the first sub-pixel P1 and the fifth sub-pixel P5.

[0066] In the gamma processing, optically linear data rj·gj·bj·Bj·Gj is generated from the first input data ri, the second input data gi, the third input data bi, the fourth input data Bi, and the fifth input data Gi.

[0067] In the correction processing, data rk·gk·bk corrected from the data rj·gj·bj·Bj·Gj is generated. Specifically, first, a correction value Δrg of data rj based on data gj is obtained using the look-up table LUT3_Rg, a correction value Δrb of data rj based on data Bj is obtained using the look-up table LUT3_Rb, a correction value Δgr of data gj based on data rj is obtained using the look-up table LUT3_Gr, a correction value Δgb of data gj based on data bj is obtained using the look-up table LUT3_Gb, a correction value Δbr of data bj based on data rj is obtained using the look-up table LUT3_Br, and a correction value Δbg of data bj based on data Gj is obtained using the look-up table LUT3_Bg.

[0068] Next, data rk is generated by performing gain adjustment on the sum result of the value represented by data rj and Δrg and Δrb, data gk is generated by performing gain adjustment on the sum result of the value represented by data gj and Δgr and Δgb, and data bk is generated by performing gain adjustment on the sum result of the value represented by data bj and Δbr and Δbg. In the gain adjustment, a coefficient (for example, the value represented by coefficient data gj / the value represented by data gk) is multiplied.

[0069] In the inverse gamma processing, the first output data rs, the second output data gs, and the third output data bs are generated based on the data rk·gk·bk.

[0070] In the sixth embodiment, for the output data of the sub-pixel, since it is generated using the input data of this sub-pixel and two sub-pixels adjacent to this sub-pixel, color deviation can be suppressed with high precision.

[0071] The above-described embodiments are for illustrative and explanatory purposes and are not intended to be limiting. Based on these illustrations and explanations, those skilled in the art should understand that various deformation methods can be carried out.

[0072] Description of Reference Numerals

[0073] 10 Display device

[0074] 11 Data processing circuit

[0075] 13 Display panel

[0076] 15 Thin film transistor layer

[0077] 20 Light-emitting element layer

[0078] P1 First sub-pixel

[0079] P2 Second sub-pixel

[0080] P3 Third sub-pixel

[0081] P4 Fourth sub-pixel

[0082] P5 Fifth sub-pixel

[0083] MT Matrix

Claims

1. A display device, comprising: A first sub-pixel including a quantum dot light-emitting layer that emits light of a first color; A second sub-pixel including a quantum dot light-emitting layer that emits light of a second color different from the light of the first color; A third sub-pixel including a quantum dot light-emitting layer that emits light of a third color different from the light of the first color and the light of the second color; and A data processing circuit that receives first input data corresponding to the first sub-pixel, second input data corresponding to the second sub-pixel, and third input data corresponding to the third sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate first output data corresponding to a first data voltage supplied to the first sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate second output data corresponding to a second data voltage supplied to the second sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate third output data corresponding to a third data voltage supplied to the third sub-pixel, The display device is characterized in that The wavelength band of the light of the first color is on the long wavelength side compared to the wavelength band of the light of the second color, and the wavelength band of the light of the second color is on the long wavelength side compared to the wavelength band of the light of the third color, When the gray level of the first input data is Tc lower than the center of the full gray level, the gray level of the second input data is Tm, and the gray level of the third input data is Tn, the gray level of the second output data is TGc, and the gray level of the third output data is TBc, When the gray level of the first input data is Td higher than the center of the full gray level, the gray level of the second input data is Tm, and the gray level of the third input data is Tn, the gray level of the second output data is TGd, and the gray level of the third output data is TBd, TGc < TGd TBc < TBd.

2. A display device, comprising: A first sub-pixel including a quantum dot light-emitting layer that emits light of a first color; A second sub-pixel including a quantum dot light-emitting layer that emits light of a second color different from the light of the first color; A third sub-pixel including a quantum dot light-emitting layer that emits light of a third color different from the light of the first color and the light of the second color; and A data processing circuit that receives first input data corresponding to the first sub-pixel, second input data corresponding to the second sub-pixel, and third input data corresponding to the third sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate first output data corresponding to a first data voltage supplied to the first sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate second output data corresponding to a second data voltage supplied to the second sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate third output data corresponding to a third data voltage supplied to the third sub-pixel. The display device is characterized in that the wavelength band of the light of the first color is on the long-wavelength side compared to the wavelength band of the light of the second color, and the wavelength band of the light of the second color is on the long-wavelength side compared to the wavelength band of the light of the third color. When the gray level of the first input data is Tm, the gray level of the second input data is Te which is lower than the center of the full gray level, and the gray level of the third input data is Tn, the gray level of the first output data is TRe, and the gray level of the third output data is TBe. When the gray level of the first input data is Tm, the gray level of the second input data is Tf which is higher than the center of the full gray level, and the gray level of the third input data is Tn, the gray level of the first output data is TRf, and the gray level of the third output data is TBf. TRe > TRf TBe < TBf.

3. A display device, comprising: a first sub-pixel including a quantum dot light-emitting layer that emits light of a first color; a second sub-pixel including a quantum dot light-emitting layer that emits light of a second color different from the light of the first color; a third sub-pixel including a quantum dot light-emitting layer that emits light of a third color different from the light of the first color and the light of the second color; and a data processing circuit that receives first input data corresponding to the first sub-pixel, second input data corresponding to the second sub-pixel, and third input data corresponding to the third sub-pixel, the data processing circuit uses the first input data, the second input data, and the third input data to generate first output data corresponding to a first data voltage supplied to the first sub-pixel, the data processing circuit uses the first input data, the second input data, and the third input data to generate second output data corresponding to a second data voltage supplied to the second sub-pixel, the data processing circuit uses the first input data, the second input data, and the third input data to generate third output data corresponding to a third data voltage supplied to the third sub-pixel, The display device is characterized in that the wavelength band of the light of the first color is on the long-wavelength side compared to the wavelength band of the light of the second color, and the wavelength band of the light of the second color is on the long-wavelength side compared to the wavelength band of the light of the third color. When the gray level of the first input data is Tm, the gray level of the second input data is Tn, and the gray level of the third input data is Tp which is lower than the center of the full gray level, the gray level of the first output data is TRp, and the gray level of the second output data is TGp. When the gray level of the first input data is Tm, the gray level of the second input data is Tn, and the gray level of the third input data is Tq which is higher than the center of the full gray level, the gray level of the first output data is TRq, and the gray level of the second output data is TGq. TRp > TRq TGp > TGq。 4. The display device according to any one of claims 1 to 3, characterized in that the data processing circuit generates first transformation data, second transformation data, and third transformation data that are optically linear data based on the first input data, the second input data, and the third input data.

5. The display device according to claim 4, characterized in that the data processing circuit includes a look-up table that associates the second transformation data with a correction value of the first transformation data and a look-up table that associates the third transformation data with a correction value of the first transformation data.

6. The display device according to claim 5, characterized in that the data processing circuit includes a look-up table that associates the first transformation data with a correction value of the second transformation data and a look-up table that associates the third transformation data with a correction value of the second transformation data.

7. The display device according to claim 6, characterized in that the data processing circuit includes a look-up table that associates the first transformation data with a correction value of the third transformation data and a look-up table that associates the second transformation data with a correction value of the third transformation data.

8. The display device according to claim 7, characterized in that the brightness of the sum of the first transformation data, the correction value of the first transformation data based on the second transformation data, and the correction value of the first transformation data based on the third transformation data is adjusted to be used as first correction data, the brightness of the sum of the second transformation data, the correction value of the second transformation data based on the first transformation data, and the correction value of the second transformation data based on the third transformation data is adjusted to be used as second correction data, and the brightness of the sum of the third transformation data, the correction value of the third transformation data based on the first transformation data, and the correction value of the third transformation data based on the second transformation data is adjusted to be used as third correction data.

9. The display device according to claim 8, characterized in that the data processing circuit performs primary correction using the first input data, the second input data, and the third input data and secondary correction using the first correction data, the second correction data, and the third correction data.

10. The display device according to claim 4, characterized in that the data processing circuit generates first output data using X data, Y data, and Z data obtained by transforming the first transformation data, the second transformation data, and the third transformation data into stimulus values in an XYZ space.

11. The display device according to claim 4, characterized in that the data processing circuit generates first output data through arithmetic processing using the first transformation data, the second transformation data, the third transformation data, and a matrix.

12. A display device, characterized in that, Comprising: a first sub-pixel including a quantum dot light-emitting layer that emits light of a first color; A second sub-pixel, which includes a quantum dot light-emitting layer that emits light of a second color different from the light of the first color; A third sub-pixel, which includes a quantum dot light-emitting layer that emits light of a third color different from the light of the first color and the light of the second color; and A data processing circuit, which receives first input data corresponding to the first sub-pixel, second input data corresponding to the second sub-pixel, and third input data corresponding to the third sub-pixel, The data processing circuit uses the first input data, the second input data, and the third input data to generate first output data corresponding to a first data voltage supplied to the first sub-pixel, The display device further includes a fourth sub-pixel, and the fourth sub-pixel includes a quantum dot light-emitting layer that emits light of the third color, The first sub-pixel is adjacent to the second sub-pixel and the third sub-pixel respectively, The second sub-pixel is adjacent to the first sub-pixel and the fourth sub-pixel respectively, The data processing circuit receives fourth input data corresponding to the fourth sub-pixel, and uses the first input data, the second input data, and the fourth input data to generate second output data corresponding to a second data voltage supplied to the second sub-pixel.

13. The display device according to claim 12, wherein The display device further includes a fifth sub-pixel, and the fifth sub-pixel includes a quantum dot light-emitting layer that emits light of the second color, The first sub-pixel is adjacent to the second sub-pixel and the third sub-pixel respectively, The third sub-pixel is adjacent to the first sub-pixel and the fifth sub-pixel respectively, The data processing circuit receives fifth input data corresponding to the fifth sub-pixel, and uses the first input data, the third input data, and the fifth input data to generate third output data corresponding to a third data voltage supplied to the third sub-pixel.

14. The display device according to any one of claims 1, 2, 3, 12, and 13, wherein The light of the first color is red light, the light of the second color is green light, and the light of the third color is blue light.

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