阅读说明：本技术 显示装置 (Display device ) 是由 帅川 张桂洋 石腾腾 于 2021-07-20 设计创作，主要内容包括：本发明实施例公开了一种显示装置,包括显示面板,靠近所述显示面板入光侧的背板,靠近所述显示面板出光侧的盖板；以及红光衰减膜,所述红光衰减膜设置于所述盖板背离所述显示面板一侧；所述盖板上定义有指纹识别区,所述红光衰减膜与所述指纹识别区对位设置；通过在所述盖板背离所述显示面板一侧设置所述红光衰减膜,以降低所述显示装置内发出的红光的比例,进而达到改善因材料导致的所述显示装置色点偏黄的问题。(The embodiment of the invention discloses a display device, which comprises a display panel, a back plate and a cover plate, wherein the back plate is close to the light inlet side of the display panel; the red light attenuation film is arranged on one side, away from the display panel, of the cover plate; a fingerprint identification area is defined on the cover plate, and the red light attenuation film and the fingerprint identification area are arranged in an alignment way; the red light attenuation film is arranged on one side, away from the display panel, of the cover plate, so that the proportion of red light emitted in the display device is reduced, and the problem that the color point of the display device is yellow due to materials is solved.)

1. The display device is characterized by comprising a display panel, a back plate close to the light inlet side of the display panel and a cover plate close to the light outlet side of the display panel; and the number of the first and second groups,

the red light attenuation film is arranged on one side, away from the display panel, of the cover plate;

the cover plate is defined with a fingerprint identification area, and the red light attenuation film and the fingerprint identification area are arranged in an alignment mode.

2. The display device according to claim 1, wherein the area of the red light attenuating film covering region is greater than or equal to the area of the fingerprint module identification region.

3. The display device according to claim 1, wherein the material of the red light reduction film comprises an organic material, an inorganic material, or a combination thereof, the organic material comprising: ta₂O₃(ii) a The inorganic material comprises SiO₂。

4. The display device of claim 1, wherein the refractive index of the red light attenuating film is proportional to the wavelength of the light being attenuated and the refractive index of the red light attenuating film is inversely proportional to the thickness of the red light attenuating film.

5. The display device according to claim 4, wherein the wavelength of the red light emitted from the backlight module is a first wavelength λ_rSaid first wavelength λ_rHaving a predetermined wavelength range, said first wavelength λ_rThe preset wavelength ranges are: lambda is less than or equal to 600nm_r≤900nm。

6. The display device according to claim 3, wherein the refractive index of the red light attenuating film is a first refractive index n, the first refractive index n having a predetermined range, the predetermined range of the first refractive index n being: n is more than or equal to 1 and less than or equal to 1.5.

7. The display device according to claim 1, wherein wavelengths of light emitted by different colors of light in the backlight module are inversely proportional to film thicknesses of the color resists in the display panel corresponding to the colors.

8. The display device as claimed in claim 7, wherein the blue light in the backlight module emits light with a second wavelength λ_bA second wavelength λ_bHaving a predetermined range, a second wavelength λ_bThe preset wavelength ranges are: lambda is not more than 380nm_b≤480nm。

9. The display device according to claim 8, wherein a film thickness of the red resist layer and a film thickness of the green resist layer in the display panel are both larger than a film thickness of the blue resist layer, and a film thickness of the green resist layer is smaller than a film thickness of the red resist layer.

10. The display device according to claim 8, wherein the wavelength of the red light and the wavelength of the green light in the backlight module are both smaller than the wavelength of the blue light.

Technical Field

The invention relates to the field of display, in particular to a display device.

Background

Currently, the mainstream display technologies include a Liquid Crystal Display (LCD) and a flexible display (OLED), wherein the LCD is a passive light emitting technology, and the LCD illuminates a liquid crystal cell through a whole backlight structure to realize brightness control of an optical fiber, and the OLED technology adopts a one-by-one OLED pixel to actively emit light, because compared with the LED, the OLED has advantages of self-luminescence, high contrast, lightness, thinness, flexibility, foldability, and the like. Based on the self-luminous characteristic of the OLED, the OLED can be well compatible with the existing optical fingerprint identification module, so that the in-plane optical fingerprint identification becomes the 'unique advantage' of the existing OLED. However, the optical fingerprint in the LCD display panel usually adopts a collimating design scheme, but is limited by factors such as process and material, so that the current LCD still has a certain difference from the conventional product in terms of material film thickness and transmittance, resulting in a deviation of chromaticity of the display device.

Therefore, there is still a problem in the prior art of display devices that the color point of the display device is yellowish due to the materials, and there is a great need for improvement.

Disclosure of Invention

The invention relates to a display device for improving the problem of yellow color point of the display device caused by materials in the prior art.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

the embodiment of the invention provides a display device, which comprises a display panel, a back plate and a cover plate, wherein the back plate is close to the light inlet side of the display panel; and the number of the first and second groups,

the red light attenuation film is arranged on one side, away from the display panel, of the cover plate;

the cover plate is defined with a fingerprint identification area, and the red light attenuation film and the fingerprint identification area are arranged in an alignment mode.

In one embodiment, the area of the red light attenuation film covering area is larger than or equal to the area of the fingerprint module identification area.

In one embodiment, the material of the red light attenuating film comprises an organic material, an inorganic material, or a combination thereof, the organic material comprising: ta₂O₃(ii) a The inorganic material comprises SiO₂。

In one embodiment, the refractive index of the red light attenuating film is proportional to the wavelength of the light being attenuated and the refractive index of the red light attenuating film is inversely proportional to the thickness of the red light attenuating film.

In one embodiment, the wavelength of the red light emitted by the backlight module is a first wavelength λ_rSaid first wavelength λ_rHaving a predetermined wavelength range, said first wavelength λ_rThe preset wavelength ranges are: lambda is less than or equal to 600nm_r≤900nm。

In one embodiment, the refractive index of the red light attenuating film is a first refractive index n, the first refractive index n has a certain preset range, and the preset range of the first refractive index n is: n is more than or equal to 1 and less than or equal to 1.5.

In one embodiment, the wavelength of light emitted by different colors of light in the backlight module is inversely proportional to the film thickness of the color resist layer in the display panel corresponding to the color.

In one embodiment, the wavelength emitted by the blue light in the backlight module is a second wavelength λ_bA second wavelength λ_bHaving a predetermined range, a second wavelength λ_bThe preset wavelength ranges are: lambda is not more than 380nm_b≤480nm。

In one embodiment, the film thickness of the red color resist layer and the film thickness of the green color resist layer in the display panel are both greater than the film thickness of the blue color resist layer, and the film thickness of the green color resist layer is less than the film thickness of the red color resist layer.

In one embodiment, the wavelength of the red light and the wavelength of the green light in the backlight module are both smaller than the wavelength of the blue light.

Compared with the prior art, the display device provided by the invention has the beneficial effects that:

according to the display device provided by the invention, the red light attenuation film is arranged on the side, away from the display panel, of the cover plate, so that the proportion of red light in the display device is reduced, and the problem that the color point of the display device is yellow due to materials is solved.

Drawings

FIG. 1 is a graph showing the transmittance of red light before and after baking of the optical path material.

FIG. 2 is a chromaticity deviation diagram of light emitted from a backlight module of a display device.

Fig. 3 is a graph showing transmittance of a display device with different optical path materials.

FIG. 4 is a graph of transmittance spectra of display devices with different coatings.

Fig. 5 is a schematic view of a first structure of a display device according to an embodiment of the invention.

Fig. 6 is a second structural diagram of a display device according to an embodiment of the invention.

Fig. 7(a) is a schematic diagram of a third structure of the display device according to the embodiment of the present invention.

Fig. 7(b) is a fourth structural schematic diagram of the display device according to the embodiment of the invention.

FIG. 8 is a diagram illustrating the path of light rays propagating in a display device according to an embodiment of the present invention.

FIG. 9(a) shows the first reflected light ray P₁The waveform change diagram of (2).

FIG. 9(b) shows the second reflected light ray P₂The waveform change diagram of (2).

FIG. 9(c) shows the first reflected light ray P₁And the second reflected light P₂The interference profile of (2).

Fig. 10 is a film transmittance curve diagram of the red light reduction film after the film thickness of the red light reduction film in the display panel is designed to be improved.

Fig. 11 is a graph showing transmittance change of red light wavelength emitted from the light emitting device before and after backlight adjustment.

FIG. 12 is a graph showing the relationship between the film thickness of a color resist layer and color dots in a display device.

FIG. 13 shows the transmittance of light before and after spectral adjustment of a backlight in a display device.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The present invention provides a display device, and particularly, refer to fig. 1 to 13.

At present, most of optical fingerprints in an LCD display panel adopt a collimation design scheme, but are limited by the influence of factors such as process, materials and the like, so that the chromaticity of the display device is deviated. Fig. 1 is a graph showing transmittance of red light before and after baking the optical path material. As can be seen from fig. 1, when the wavelength λ is not greater than 580mm, the transmittance of the blue light part is significantly attenuated after the light path material added to the fingerprint module in the display panel is baked, and the chromaticity of the whole module is yellow due to the cumulative effect of multiple baking layers of films.

		Standard value	Fingerprint module in screen	Difference in
					R	x	0.675789	0.676294	0.000505
	y	0.319731	0.319901	0.00017
						Y	0.013801	0.013693	-0.00011
G	x	0.269017	0.2705	0.001484
						y	0.683455	0.683517	6.18E-05
	Y	0.048127	0.046787	-0.00134
					B	x	0.153023	0.152962	-6.1E-05
	y	0.058647	0.063635	0.004988
						Y	0.006124	0.005665	-0.00046
W	x	0.294	0.30499	0.010989
						y	0.31217	0.330275	0.018105
	Y	0022684	0022048	-000064
					NTSC		0.936614	0.9301	-0.00651
CCT		7908.596	6922.813	-985.783
					Tr		0.019558	0.01901	-0.00055

Among them, NTSC (National Television System Committee) is a standard of the color gamut, which refers to the sum of colors under the NTSC standard. First, color gamut is a method of encoding a color, and also refers to the sum of colors that a technical system is capable of producing. CCT (color temperature), which represents a unit of measure in which a light ray contains color components, is calculated from color coordinates. Tr represents the transmittance of the red resist layer in the display device.

Fig. 2 is a chromaticity deviation diagram of light emitted from the backlight module of the display device. As can be seen from fig. 2, in the D65 standard color coordinate, color point P1 is biased toward color point P2. Fig. 3 is a graph showing transmittance of the display device with different optical path materials. As can be seen from fig. 3, when the wavelength range of the light is greater than 530mm, the transmittance of the light of each of the light path materials is high, and can generally reach more than 95%, and at this time, the different light path materials have less influence on the transmittance of the light; when the wavelength range of the light is smaller than or equal to 530mm, the influence of different light path materials on the transmittance of each light is large, and the fluctuation range of the transmittance of the light emitted by different light path materials is large.

Accordingly, the present invention provides a display device to solve the above problems.

Fig. 4 is a graph showing the transmittance spectrum of the display device with different coatings. As can be seen from fig. 4, when the wavelength range of red light is greater than 700mm, the transmittance of the display device coated with the conventional infrared film is equal to the transmittance of the display device coated with the red light attenuating film; when the wavelength range of the red light is less than or equal to 700mm, the transmittance of the display device coated with the conventional infrared film is less than that of the display device coated with the red light attenuation film.

Fig. 5 is a schematic view of a first structure of a display device according to an embodiment of the present invention. In the display device 1 provided by the present invention, firstly, the display device 1 is a liquid crystal display device or an OLED display device, as can be seen from fig. 5, the display device 1 is generally a cuboid, but not limited to a cuboid, and may be in other various shapes, and eight outer corners of the display device 1 are all in a rounded corner structure, so as to avoid inconvenience and even scratching fingers when a user installs, carries or uses the display device.

The first direction X is a direction on a display surface of the display device 1 and parallel to one side of the display surface of the display device 1, the second direction Y and the first direction X are both located in a plane where the display surface is located, the second direction Y is perpendicular to the first direction X, the third direction Z is a direction perpendicular to the plane where the display surface of the display device 1 is located, and the third direction Z is perpendicular to both the second direction Y and the first direction X.

The display surface is a plane on which a user views a display image of the display device 1, and when the display device 1 only includes one display surface, the display surface is disposed on a side of the rear housing away from the display device 1.

Specifically, referring to fig. 6, a second structural diagram of the display device according to the embodiment of the present invention is shown. Also shown in cross-section along A-A in FIG. 1. The invention provides a display device 1, which comprises a display panel 12, a back plate 11 close to the light inlet side of the display panel 12, and a cover plate 13 close to the light outlet side of the display panel 12; the red light attenuation film 14 is arranged on one side, away from the display panel 12, of the cover plate 13; the cover plate 13 is defined with a fingerprint identification area 141, and the red light attenuation film 14 is aligned with the fingerprint identification area 141.

It should be noted that the fingerprint identification area 141 is a virtual divided area, and includes both a touch area disposed on a side of the display device 1 close to the red light reduction film 14 for receiving a fingerprint signal of a user, and a processing area disposed inside the display device 1 for reading and feeding back a signal.

It can be understood that the red light attenuation film 14 is a film layer covering the side of the display panel 12 close to the cover plate 13, and is mainly used for reducing the transmittance of the red light emitted in the display device 1, so that the proportion of the red light emitted by the display device 1 is reduced, thereby balancing the deterioration of the fingerprint image caused by the outdoor red light, and further achieving the purpose of improving the problem of yellow color point of the display device caused by materials. Further, since the red light attenuation film 14 only attenuates red light within the display area of the display device 1, the red light attenuation film 14 may cover the surface of the display device 1 near the cover 13, or only cover a portion of the display area of the display device 1 near the cover 13. When the red light attenuation film 14 completely covers the surface of the display device 1 close to one side of the cover plate 13, the manufacturing process of the display device 1 is simple, and the material consumption of the red light attenuation film 14 is large; when the red light attenuation film 14 only covers the display area of the display device 1 near the surface of one side of the cover plate 13, the material consumption of the red light attenuation film 14 is small, the manufacturing process of the display device 1 is complex, and a planarization process needs to be added to ensure the flatness of the display device 1 near the cover plate 13.

Further, the area of the covered area of the red light attenuation film 14 is greater than or equal to the area of the fingerprint module identification area 141.

It is understood that the action site of the red light attenuation film 14 is mainly in the portion of the display device 1 where light is emitted, i.e., the display region; the fingerprint module identification area 141 can only be identified by the display device 1 in the display area, the display device 1 may only have some areas capable of identifying the fingerprint signal of the user, see fig. 7(a) and 7(b), and the whole display area of the display device 1 needs to emit light, so that the area of the area covered by the red light attenuation film 14 is greater than or equal to the area of the fingerprint module identification area 141 to ensure the normal operation of the display device 1.

Further, the material of the red light reduction film includes an organic material, an inorganic material, or a combination of both, and the organic material includes: ta₂O₃(ii) a The inorganic material comprises SiO₂。

It will be appreciated that the organic material is typically an absorbing material and may be used to absorb red light emitted within the display device 1, thereby reducing the red light emitted within the display device 1. The inorganic material generally utilizes a multilayer film interference principle, and the thickness of a film layer is adjusted to enable the wavelength of red light to generate interference so as to offset part of red light, thereby reducing the wavelength of the red light emitted by the display device 1. Further, whether the red light reduction film 14 is made of an organic material or an inorganic material, the red light reduction film 14 may be formed by a Chemical Vapor Deposition (CVD) method.

Further, the refractive index of the red light attenuating film 14 is proportional to the wavelength of the light to be attenuated, and the refractive index of the red light attenuating film 14 is inversely proportional to the thickness of the red light attenuating film 14.

It is understood that, as seen by the mechanism of the three primary colors, the phenomenon of a yellow color point can be achieved by reducing the transmittance of red light, while reducing the transmittance can be achieved by increasing the reflected light, with a lower transmittance for a film layer at higher reflectivity. The three primary colors are that any one of the three colors cannot be generated by mixing the other two primary colors, while other colors can be mixed by the three primary colors according to a certain proportion, and the three independent colors are called the three primary colors in terms of colorimetry.

According to the multilayer film interference principle, coherent light superposition needs to be carried out on the design of the thickness of the film layer when the reflected light is increased. Specifically, the thickness design of the film layer needs to meet the following requirements: where d denotes the thickness of the film and n denotes the refractive index of the film, the refractive index is in the range of 1 to 1.5, preferably, n is 1.22, K is an integer, and L is the wavelength of the light to be reduced, in the present embodiment, the wavelength λ r of red light.

Further, referring to fig. 8, a path propagation diagram of light rays in the display device is shown. It can be seen that a light P enters the cover plate 13 from a side of the display device 1 close to the display panel 12, and then enters the red light attenuation film 14 from the cover plate 13, and the light P generates a first reflected light P at a contact surface between the cover plate 13 and the red light attenuation film 14₁A second reflected light ray P is generated on the surface of the red light attenuation film 14 far away from the cover plate 13₂. Referring to FIG. 9(a), the first reflected light ray P is₁The waveform change diagram of (2). Fig. 9(b) is a waveform diagram of the second reflected light P2. As can be seen from fig. 9(a) and 9(b), the abscissa represents time, the ordinate represents voltage, and the first reflected light ray P₁And the second reflected light ray P₂Are equal in phase and identical in frequency. Therefore, the first reflected light ray P₁And the second reflected light ray P₂Is co-propagating, the first reflected light ray P₁And the second reflected light ray P₂There may be several phase differences between them. Referring to FIG. 9(c), the first reflected light ray P is shown₁And the second reflected light P₂The interference profile of (2). The interference means that two or more lines of waves are superposed in space to form a new waveform phenomenon. Similarly, in fig. 9(c), the abscissa represents time, the ordinate represents voltage, and the first reflected light ray P₁And the second reflected light ray P₂The second light ray P' generated after the superposition belongs to coherent superposition, i.e. the first reflected light ray P₁And the second reflected light ray P₂The frequencies of the first light rays P 'are the same, the vibration directions are the same, the phase difference in the observation time is constant, only the phase of the second light rays P' is changed, and the phase is changed from-1V to-2V. Since coherent superposition is one of the interference phenomena, when the first reflected light P is reflected₁And the second reflected light ray P₂After the superposition, part of the red wavelengths of the generated second light P' is cancelled out, so that the red wavelengths in the display device 1 are reduced, the transmittance of the red light emitted by the display device 1 is reduced, and the problem of yellow color point of the display device caused by materials is solved.

Further, the wavelength of the red light emitted by the backlight module 11 is a first wavelength λ r, the first wavelength λ r has a certain preset wavelength range, and the preset wavelength range of the first wavelength λ r is: lambda r is more than or equal to 600nm and less than or equal to 900 nm.

It can be understood that, when the range of the first wavelength λ r emitted by the backlight module 11 is: when λ r is larger than or equal to 600nm and smaller than or equal to 900nm, the film thickness of the red light attenuation film 14 is the optimal thickness, which can effectively reduce the wavelength of the red light emitted from the display device 1.

Further, the refractive index of the red light attenuation film 14 is a first refractive index n, the first refractive index n has a certain preset range, and the preset range of the first refractive index n is: n is more than or equal to 1 and less than or equal to 1.5.

It is understood that when the refractive index of the red light attenuating film 14 ranges from: when n is greater than or equal to 1 and less than or equal to 1.5, the red light attenuation film 14 has the greatest attenuation degree to the red light wavelength emitted from the display device 1, which is most beneficial to balance various color points in the display device 1.

Referring to fig. 10, a film transmittance curve of the red light reduction film is designed to improve the film thickness of the red light reduction film in the display panel. When the wavelength is within the range of 700mm to 800mm, the transmittance of the red light attenuation film is the lowest.

Referring to fig. 11, a graph of transmittance change of red light wavelength emitted by the light emitting device before and after adjusting the backlight is shown. When the wavelength range is in the range of 500mm to 650mm, the transmittance of red light before the backlight is adjusted, that is, when the conventional backlight is used, is slightly higher than the transmittance of red light after the backlight is adjusted.

Therefore, reducing the wavelength of red light emitted within the display device 1 may also improve the wavelength of red light within the display device 1 by improving the backlight spectrum within the display device 1. The improvement of the backlight spectrum in the display device 1 includes two ways, one of which is to increase the wavelength of the blue light emitted by the display device 1 by adjusting the proportion of the blue phosphor in the display panel 12, so as to attenuate the wavelength of the red light; secondly, the wavelength of the red light emitted from the display device 1 is reduced by increasing the film thickness of the blue color resist layer in the display panel 12 or reducing the film thickness of the red color resist layer and the film thickness of the green color resist layer. Further, there are many factors affecting the backlight spectrum, including the backlight spectrum of the light emitting device, the spectrum of the color filter substrate, and the red light attenuating film, and the whole spectrum of the display device 1 can be improved by improving the spectrum of each portion.

Specifically, the wavelength of light emitted by different colors of light in the backlight module 11 is inversely proportional to the film thickness of the color resist layer in the display panel 12 corresponding to the color.

It can be understood that, referring to fig. 12 and 13, the wavelength of the red light in the backlight module 11 is the longest, and the film thickness of the red color resist layer in the display panel 12 is the largest; the wavelength of the blue light in the backlight module 11 is the shortest, and the film thickness of the blue color resist layer in the display panel 12 is the smallest. When the wavelength lambda is more than or equal to the range of 585mm, the transmittance of the red light is highest; when the wavelength is within the range of 490mm to λ < 585mm, the transmittance of green light in the backlight module 11 is the highest; when the wavelength λ is less than 490mm, the transmittance of blue light in the backlight module 11 is the highest. Therefore, if the wavelength of the red light emitted by the display device 1 is to be improved, the wavelength of the light emitted by the light of different colors in the backlight module 11 is inversely proportional to the film thickness of the color resist layer in the display panel 12 corresponding to the color.

First, the ratio of the blue phosphor in the display panel 12 is adjusted to reduce the red wavelength emitted by the display device 1.

Specifically, the wavelength emitted by the blue light in the backlight module is a second wavelength λ_bA second wavelength λ_bHaving a predetermined range, a second wavelength λ_bThe preset wavelength ranges are: lambda is not more than 380nm_b≤480nm。

It will be appreciated that by adjusting the ratio of blue silver powder in the display device 1 and then measuring the wavelength of the blue light by a tool, when the second wavelength λ_bThe range of (A) is as follows: lambda is not more than 380nm_bAt 480nm or less, the effect of the red light attenuating film 14 on the red light emitted in the display device 1 is maximized.

Secondly, the film thickness of the color resist layer with different colors in the display panel 12 is adjusted to reduce the wavelength of the red light emitted by the display device 1.

Specifically, the film thickness of the red color resist layer and the film thickness of the green color resist layer in the display panel 12 are both greater than the film thickness of the blue color resist layer, and the film thickness of the green color resist layer is less than the film thickness of the red color resist layer.

It can be understood from fig. 13 that, since the wavelength of the blue light emitted from the backlight module 11 is smaller than the wavelength of the red light emitted, and the wavelength of the blue light in the display device 1 needs to be increased to decrease the wavelength of the red light in the display device 1, the film thickness of the blue color barrier layer can be decreased by increasing the film thickness of the red color barrier layer and the film thickness of the green color barrier layer in the display panel 12, so that the display device 1 achieves the purpose of decreasing the wavelength of the red light.

Further, the wavelength of the red light and the wavelength of the green light in the backlight module 11 are both smaller than the wavelength of the blue light.

It can be understood from fig. 13 that the wavelength of the red light and the wavelength of the green light in the backlight module 11 are both greater than the wavelength of the blue light. To decrease the wavelength of the red light emitted in the display device 1, the wavelength of the red light needs to be decreased and the wavelength of the blue light needs to be increased, so that the color point in the display device 1 is balanced.

The display device provided by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.