CN112180601B - Display module assembly and car - Google Patents
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- CN112180601B CN112180601B CN202011062621.4A CN202011062621A CN112180601B CN 112180601 B CN112180601 B CN 112180601B CN 202011062621 A CN202011062621 A CN 202011062621A CN 112180601 B CN112180601 B CN 112180601B
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Abstract
The invention provides a display module and an automobile, relating to the technical field of display, wherein the display module comprises a plurality of pixel units and an optical crystal layer,an optical crystal layer is located on the light emitting display side of the plurality of pixel cells; the optical crystal layer has a structure which is arranged periodically in space and forms at least one group of crystal planes which are parallel to each other, the acute included angle between each crystal plane and the surface of the optical crystal layer, which is far away from one side of the plurality of pixel units, is alpha, and the alpha is more than or equal to 20 degrees and less than or equal to 70 degrees; the interval between two adjacent parallel crystal faces in the optical crystal layer is d, the contained angle between external incident light and the crystal face is theta, the wavelength of external incident light is lambda, and the optical crystal layer satisfies:
wherein j is a positive integer; lambda is more than or equal to 380nm and less than or equal to 780 nm; the optical crystal layer is arranged on the substrate, and the optical crystal layer is arranged on the substrate. The invention provides a display module and an automobile, which are used for reducing the reflectivity of external environment light and simultaneously meeting the requirements of low reflectivity and high color phase.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and an automobile.
Background
With the development of science and technology and the progress of society, people rely on the aspects of information communication and transmission increasingly, and the display module is used as a main carrier and a material basis for information exchange and transmission, and is now a hot spot for research of many scientists.
In order to prevent the display module from reflecting the external ambient light, a reflection reducing film is generally disposed in the display module, and the reflection reducing film generally includes an alternate stacked structure formed by a high refractive index material and a low refractive index material, but the effect of reducing the reflectivity of the reflection reducing film is limited, the reflectivity is still relatively high, and the requirements of low reflectivity and high color phase cannot be met at the same time.
Disclosure of Invention
The invention provides a display module and an automobile, which are used for reducing the reflectivity of external environment light and simultaneously meeting the requirements of low reflectivity and high color phase.
In a first aspect, an embodiment of the present invention provides a display module, including a plurality of pixel units and an optical crystal layer, where the optical crystal layer is located on a light emitting display side of the pixel units;
the optical crystal layer is provided with a structure which is arranged periodically in space and forms at least one group of crystal planes which are parallel to each other, the acute included angle between each crystal plane and the surface of the optical crystal layer, which is far away from one side of the pixel units, is alpha, and alpha is more than or equal to 20 degrees and less than or equal to 70 degrees;
the distance between two adjacent parallel crystal faces in the optical crystal layer is d, the included angle between external incident light and the crystal faces is theta, the wavelength of the external incident light is lambda, and the following conditions are met:
wherein j is a positive integer; lambda is more than or equal to 380nm and less than or equal to 780 nm;
the reflection type liquid crystal display device further comprises at least one reflection mirror, wherein the at least one reflection mirror comprises a concave mirror, and the light beam after the external incident light is reflected by the optical crystal layer avoids the concave mirror to propagate.
In a second aspect, an embodiment of the present invention provides an automobile, including the display module according to the first aspect.
In the embodiment of the invention, the display module comprises a plurality of pixel units and a concave mirror, light rays emitted by the pixel units are projected to the concave mirror, and when the display module is applied to an automobile, the light rays reflected by the concave mirror can form a virtual image in front of a windshield, so that head-up display is realized. It can be understood that the display module provided by the embodiment of the invention can also be applied when other devices except automobiles need to display a picture through a plurality of pixel units and concave mirrors. When external environment light throws display module assembly, the visible light in the external environment light (external incident light promptly) is reflected by the side of optical crystal layer towards optical crystal layer to visible light in the external environment light can not be by a plurality of pixel, and the concave mirror propagation can be avoided to the light beam after being reflected by optical crystal layer, thereby has reduced the intensity that visible light got into user's eyes in the external environment light, has reduced display module assembly's reflectivity. Compared with an alternating stack structure formed by high-refractive-index materials and low-refractive-index materials in the prior art, the optical crystal layer in the embodiment of the invention has no selection effect of the stack structure formed by the high-refractive-index materials and the low-refractive-index materials on the optical wave frequency, so that the display module can simultaneously meet the requirements of low reflectivity and high color phase.
Drawings
FIG. 1 is a schematic diagram of an optical path of a display module according to the prior art;
fig. 2 is a schematic light path diagram of a display module according to an embodiment of the present invention;
fig. 3 is a schematic top view of a display module according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view along the direction AA' in FIG. 3;
fig. 5 is a schematic top view of another display module according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view taken along the direction BB' in FIG. 5;
FIG. 7 is a schematic top view illustrating a display module according to another embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view taken along the direction CC' in FIG. 7;
fig. 9 is a schematic top view illustrating a display module according to another embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view taken along direction DD' in FIG. 9;
fig. 11 is a schematic top view illustrating a display module according to another embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view taken along direction EE' of FIG. 11;
fig. 13 is a schematic top view illustrating a display module according to another embodiment of the present invention;
fig. 14 is a schematic cross-sectional view of another display module according to an embodiment of the invention;
FIG. 15 is a schematic diagram of a three-dimensional structure of a one-dimensional optical crystal according to an embodiment of the present invention;
FIG. 16 is a schematic diagram of a three-dimensional structure of a two-dimensional optical crystal according to an embodiment of the present invention;
FIG. 17 is a schematic perspective view of a three-dimensional optical crystal according to an embodiment of the present invention;
fig. 18 is a schematic view of an automobile according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic optical path diagram of a display module in the prior art, referring to fig. 1, the display module is disposed in an automobile, the display module includes a plurality of pixel units 22, a plane mirror 32 and a concave mirror 31, the automobile includes a windshield 33, external environment light passes through the windshield 33 and is projected to the concave mirror 31, the external environment light is reflected to the pixel units 22 by the concave mirror 31 and the plane mirror 32, and is reflected by the pixel units 22, then is projected to the plane mirror 32 and the concave mirror 31, then is projected to the windshield 33, and after being reflected by the windshield 33, the external environment light can be observed by eyes of a user, so as to cause a bright spot virtual image.
Fig. 2 is a schematic light path diagram of a display module according to an embodiment of the present invention, fig. 3 is a schematic top view diagram of the display module according to the embodiment of the present invention, fig. 4 is a schematic cross-sectional view along the direction AA' in fig. 3, and referring to fig. 2, fig. 3 and fig. 4, the display module includes a plurality of pixel units 22 and an optical crystal layer 10, and the optical crystal layer 10 is located on a light emitting display side of the plurality of pixel units 22. Light emitted from the plurality of pixel cells 22 may continue to propagate through the optical crystal layer 10. The optical crystal layer 10 has a spatially periodic arrangement structure, and forms at least one group of crystal planes 100 parallel to each other. The optical crystal layer 10 may have a structure periodically arranged in one-dimensional, two-dimensional, or three-dimensional spatial direction, and as an example, the embodiment of the present invention is explained by taking as an example the optical crystal layer 10 having a periodic structure in one-dimensional spatial direction. In the optical crystal layer 10, an acute included angle between the crystal plane 100 and a surface of the optical crystal layer 10 on a side away from the plurality of pixel units 22 is α, and α is greater than or equal to 20 ° and less than or equal to 70 °. The distance between two adjacent parallel crystal planes 100 in the optical crystal layer 10 is d, and the distance between two parallel crystal planes 100 is the distance between two crystal planes 100 in the direction perpendicular to the crystal planes 100. An included angle between the external incident light and the crystal plane 100 is theta, the wavelength of the external incident light is lambda, and the following formula is satisfied:
wherein j is a positive integer, and λ is more than or equal to 380nm and less than or equal to 780 nm. The external incident light is light in a visible light band in the external environment light, and the external incident light may include light of one or more wavelengths, and the wavelength of the light of one or more wavelengths is between 380nm and 780 nm. When the external incident light is light with multiple wavelengths, at least one wavelength in the light with multiple wavelengths satisfies the formula (1). It can be seen that the parameters d, θ, λ, etc. in the above formula (1) may vary in expression according to specific embodiments. For example, in one embodiment, d is specifically expressed as d1In another embodiment, d is specifically expressed as d2. When the external incident light irradiates the optical crystal layer 10, bragg diffraction occurs, light with at least one wavelength in the external incident light satisfies formula (1), and at this time, the light satisfying formula (1) is reflected by the crystal plane 100 and exits toward the side surface of the optical crystal layer 10, wherein the side surface of the optical crystal layer 10 is connected to the surface of the optical crystal layer 10 on the side away from the plurality of pixel units 22. Since the external incident light is the light in the visible light band in the external environment light, and the reduction of the reflectivity of the external environment light is due to the reduction of the reflectivity of the light in the visible light band, the detailed distinction of "reducing the reflectivity of the external environment light", "reducing the reflectivity of the external incident light", or "reducing the reflectivity of the visible light in the external environment light" is no longer made in the present invention.
The display module further comprises at least one reflecting mirror 30, wherein the at least one reflecting mirror 30 comprises a concave mirror 31, and the light beam reflected by the optical crystal layer 10 from the external incident light is transmitted by avoiding the concave mirror 31.
For example, referring to fig. 2, the display module may be disposed in an automobile. At least one of mirrors 30 may further include a plane mirror 32, i.e., the display module includes, but is not limited to, plane mirror 32 and concave mirror 31. In other embodiments, only concave mirror 31 may be provided, flat mirror 32 may not be provided, or concave mirror 31 and a plurality of flat mirrors 32 may be provided, which may be specifically provided according to product requirements. Plane mirror 32 and concave mirror 31 are located on the optical path between optical crystal layer 10 and windshield 33. The optical crystal layer 10 is located on an optical path between the plurality of pixel cells 22 and the concave mirror 32. The light emitted from the pixel unit 22 passes through the optical crystal layer 10, exits onto the plane mirror 32, is reflected by the plane mirror 32 to the concave mirror 31, is reflected by the concave mirror 31 to the windshield 33, and enters the eyes of the user after being reflected by the windshield 33, so that a virtual image is formed on the side of the windshield 33 away from the user, that is, the head-up display is realized.
External environment light passes behind windshield 33 throws to concave mirror 31, is reflected to optical crystal layer 10 by concave mirror 31 and level crossing 32 to visible light in the external environment light is reflected by optical crystal layer 10 towards optical crystal layer's side, thereby can't be reflected to level crossing 32, and then can't be reflected to concave mirror 31, just also can't be visible by user's eyes, can not cause the bright spot virtual image, be favorable to promoting the display image quality of display module in the car.
In the embodiment of the present invention, the display module includes a plurality of pixel units 22 and a concave mirror 31, light emitted by the plurality of pixel units 22 is projected onto the concave mirror 31, and when the display module is applied to an automobile, light reflected by the concave mirror 31 may form a virtual image in front of a windshield 33, so as to implement head-up display. It is understood that the display module provided by the embodiment of the present invention may also be applied when other devices besides automobiles need to display a picture through the plurality of pixel units 22 and the concave mirror 31. When external environment light is projected to the display module, visible light (namely, external incident light) in the external environment light is reflected by the side surface of the optical crystal layer 10 towards the optical crystal layer, so that the visible light in the external environment light cannot be reflected by the pixel units 22, and light beams reflected by the optical crystal layer 10 can be transmitted by avoiding the concave mirror 31, so that the intensity of the visible light entering the eyes of a user in the external environment light is reduced, and the reflectivity of the display module is reduced. Compared with an alternating stacked structure formed by high refractive index materials and low refractive index materials in the prior art, the optical crystal layer 10 in the embodiment of the invention does not have the selective effect of the stacked structure formed by the high refractive index materials and the low refractive index materials on the optical wave frequency, so that the display module can simultaneously meet the requirements of low reflectivity and high color phase.
Illustratively, referring to FIG. 4, the wavelength is λ2Is perpendicularly incident to the optical crystal layer 10, and has an angle θ with the crystal plane 100, then λ is obtained in the above formula (1)2Satisfy the following requirements
When incident light is reflected in a substantially horizontal direction by the side surface of crystal plane 100 facing optical crystal layer 10, the wavelength is λ2The closer the angle between the light ray of (a) and the crystal plane 100 is to theta, the greater the light energy reflected by the crystal plane 100, when the wavelength is lambda2The farther away from θ the angle between the light ray of (a) and the crystal plane 100, the less light energy is reflected by the crystal plane 100. When the wavelength of light incident on optical crystal layer 10 changes, the direction in which the intensity reflected by crystal plane 100 is the largest also changes, i.e., the angle θ between the external incident light and crystal plane 100 also changes. E.g. using a wavelength λ1Is incident on the optical crystal layer 10, the incident light is reflected upwardly by the facets 100 towards the side of the optical crystal layer 10 in a direction generally away from the pixel cell 22. E.g. using a wavelength of lambda3Is incident on the optical crystal layer 10, the incident light is reflected by the facets 100 down the side of the optical crystal layer 10 in a direction generally towards the pixel cell 22. One advantage of such a design is that when the angle at which the external ambient light (e.g., sunlight) is projected onto the optical crystal layer 10 changes, at least one wavelength of the visible light always exists, and the wavelength conforms to the bragg diffraction condition, so that the intensity of the visible light entering the eyes of the user in the external ambient light can be reduced, and the reflectivity of the display module is reduced.
It should be further noted that the optical crystal (the optical crystal layer 10 is made of an optical crystal) is a conventional element in the optical field, and has a wide application, but the optical crystal layer 10 in any arrangement does not have the beneficial effects in the embodiments of the present invention. For example, the crystal plane 100 is set to be perpendicular to a surface of the optical crystal layer 10 away from the pixel unit 22, and at this time, the external ambient light may be projected to the pixel unit 22, and then emitted to the eyes of the user after being reflected by the pixel unit 22, so that the reflectivity of the display module cannot be reduced. Whereas α < 20 ° and α > 70 °, it is impossible to reflect visible light in the external ambient light toward the side surface of the optical crystal layer 10. As can be seen from the above analysis related to the formula (1), the bragg diffraction conditions include both angle selectivity and wavelength selectivity, so that the display module with good reflectivity reduction effect can be realized only by satisfying the conditions of α ≦ 20 ≦ 70 °, the formula (1) and the limitation on the wavelength. In the embodiments of the present invention, the term "reduced reflectivity" does not mean a reduction in the intensity or energy of light reflected by the optical crystal layer 10, but rather, the lateral reflection of the optical crystal layer 10 does not reduce the overall reflection intensity or energy of the light. The reduced reflectance means that, due to the lateral reflection ability of optical crystal layer 10, the light beam reflected by optical crystal layer 10 from the external incident light propagates away from concave mirror 31, thereby reducing the intensity of the visible light in the external ambient light entering the eyes of the user.
It can be known from formula (1) that when j is an odd number, the right part of formula (1) represents an odd number times of half wavelength, so that diffracted light is interfered and superposed to be in a main minimum state, and at this time, besides visible light in external environment light can be reflected towards the side surface of the optical crystal layer, the optical crystal layer has an interference cancellation effect, so that the reflectivity of the external environment light can be further reduced, and a better anti-reflection effect is achieved. At this time, the formula (1) may be expressed as formula (1-1):
further, when the light having a longer wavelength is incident on the optical crystal layer 10 (for example, the light is perpendicularly incident on the optical crystal layer 10) at the same angle, the light having a longer wavelength is more likely to be reflected to the concave mirror 31, so that the intensity of the external ambient light entering the user's eye is increased, and in order to prevent the light having a longer wavelength from entering the user's eye, the above equation (1-1) may be further defined as a further optimized design for the light having a longer wavelength, that is, 625nm ≦ λ ≦ 780 nm.
As can be seen from the formula (1), when j is an even number, the right part of the formula (1) represents an even number times of half wavelength, so that diffracted light is interfered and superimposed to be in a major maximum state, and at this time, the reflection effect of the crystal plane 100 is the best, so that the loss of light energy (or light intensity) of light incident on the crystal plane can be reduced to the maximum extent, the light extraction loss of light emitted by the pixel unit 22 can be reduced, and the light extraction efficiency of the pixel unit 22 can be improved. At this time, equation (1) may be expressed as equation (1-2):
2d·sinθ＝j·λ (1-2)；
the formula (1-2) is equivalent to the formula
Alternatively, referring to fig. 3 and 4, the pixel unit 22 includes a plurality of sub-pixels of different light emission colors. The optical crystal layer 10 includes a first crystal 11, and the first crystal 11 covers a plurality of sub-pixels of different emission colors. In the embodiment of the present invention, the same first crystal 11 covers a plurality of sub-pixels with different light-emitting colors, so that the first crystal 11 can prevent the external incident light from being projected to the plurality of sub-pixels with different light-emitting colors, and prevent the external incident light from being reflected to the concave mirror 31 by the plurality of sub-pixels with different light-emitting colors, thereby preventing the external incident light from entering the eyes of the user due to the reflection of the plurality of sub-pixels with different light-emitting colors.
Illustratively, the first crystal 11 covers all the pixel units 22 in the display module, and the first crystal 11 covers all the sub-pixels in the display module, so the arrangement has the advantages that the coverage of all the sub-pixels can be realized by providing one first crystal 11, the cost is low, and the requirement on the alignment precision of the first crystal 11 and the sub-pixels is also low.
Fig. 5 is a schematic top view of another display module according to an embodiment of the present invention, fig. 6 is a schematic cross-sectional view along the direction BB' in fig. 5, referring to fig. 5 and fig. 6, a plurality of sub-pixels with different light emitting colors includes a first sub-pixel 201, a second sub-pixel 202, and a third sub-pixel 203, the first sub-pixel 201 emits red light, the second sub-pixel 202 emits green light, and the third sub-pixel 203 emits blue light. The first crystal 11 covers the first subpixel 201, the second subpixel 202, and the third subpixel 203 arranged in the first direction X, and when the angle α of 20 ° or more and 70 ° or less, the above formula (1), and the definition of the wavelength are satisfied, the reflectance of the first crystal 11 to the green wavelength band is greater than the reflectance to the red wavelength band, and the reflectance of the first crystal 11 to the green wavelength band is also greater than the reflectance to the blue wavelength band. Therefore, the proportion of the green light emitted by the second sub-pixel 202 passing through the first crystal 11 along the original propagation direction thereof is smaller than the proportion of the red light emitted by the first sub-pixel 201 passing through the first crystal 11 along the original propagation direction thereof, and the proportion of the green light emitted by the second sub-pixel 202 passing through the first crystal 11 along the original propagation direction thereof is smaller than the proportion of the blue light emitted by the third sub-pixel 203 passing through the first crystal 11 along the original propagation direction thereof. Therefore, the light emitting areas of all the second sub-pixels 202 in the same pixel unit 22 can be set to be larger than the light emitting areas of the first sub-pixel 201 and the third sub-pixel 203, so as to compensate the light intensity loss of the second sub-pixels 202 in the original propagation direction due to the reflection of the first crystal 11, and thus equalize the light emitting brightness of the red light, the green light and the blue light in the same direction in the same pixel unit 22. The wavelength of the red light band may be greater than or equal to 625nm and less than or equal to 780nm, the wavelength of the green light band may be greater than or equal to 492nm and less than or equal to 577nm, and the wavelength of the blue light band may be greater than or equal to 440nm and less than or equal to 475 nm.
Illustratively, referring to fig. 5 and 6, a pixel unit 22 includes a first sub-pixel 201, a second sub-pixel 202 and a third sub-pixel 203, and the light-emitting area of the second sub-pixel 202 is larger than the light-emitting areas of the first sub-pixel 201 and the third sub-pixel 203. In other embodiments, one pixel unit 22 may further include at least two second sub-pixels 202, which is not limited in the present invention.
Alternatively, referring to fig. 5 and 6, a plurality of pixel units 22 are arranged in a matrix along a first direction X and a second direction Y, the first direction X crossing the second direction Y. In some embodiments, the first direction X and the second direction Y may be perpendicular, and in other embodiments, the first direction X and the second direction Y may not be perpendicular and may present an included angle of some value between 0 ° and 90 °. In the same pixel unit 22, the first sub-pixel 201, the second sub-pixel 202 and the third sub-pixel 203 are arranged along the first direction X, the length of the first sub-pixel 201 along the first direction X is L1, the length of the second sub-pixel 202 along the first direction X is L2, the length of the third sub-pixel 203 along the first direction X is L3, 1 < L2/L1 is less than or equal to 3, and 1 < L2/L3 is less than or equal to 3. L1 may be equal to L3, or L1 may not be equal to L3. In the embodiment of the present invention, the length of the second sub-pixel 202 may be set to be 1 to 3 times (including an end point value) the length of the first sub-pixel 201 and the third sub-pixel 203 along the first direction X. Along the second direction Y, for example, the first sub-pixel 201, the second sub-pixel 202 and the third sub-pixel 203 may be arranged to have the same or similar length, so that the light emitting area of all the second sub-pixels 202 in the same pixel unit 22 is larger than the light emitting area of the first sub-pixel 201 and the third sub-pixel 203, so as to compensate the light intensity loss of the second sub-pixels 202 in the original propagation direction due to the reflection of the first crystal 11.
Fig. 7 is a schematic top view of another display module according to an embodiment of the invention, and fig. 8 is a schematic cross-sectional view taken along a direction CC' in fig. 7. referring to fig. 7 and 8, a plurality of pixel units 22 are arranged in a matrix along a first direction X and a second direction Y, where the first direction X intersects the second direction Y. In the same pixel unit 22, the first sub-pixel 201, the two second sub-pixels 202 and the third sub-pixel 203 are arranged along the first direction X, and the sum of the light emitting areas of the two second sub-pixels 202 is larger than the light emitting areas of the first sub-pixel 201 and the third sub-pixel 203, so as to compensate the light intensity loss of the second sub-pixel 202 in the original propagation direction due to the reflection of the first crystal 11.
Exemplarily, referring to fig. 7 and 8, the two second sub-pixels 202 are a left second sub-pixel 2021 and a right second sub-pixel 2022, respectively, and in the same pixel unit 22, the first sub-pixel 201, the left second sub-pixel 2021, the right second sub-pixel 2022, and the third sub-pixel 203 are sequentially arranged along the first direction X.
Fig. 9 is a schematic top view of another display module according to an embodiment of the invention, fig. 10 is a schematic cross-sectional view along the direction DD' in fig. 9, and referring to fig. 9 and 10, in the same pixel unit 22, a first sub-pixel 201, a second sub-pixel 202, a third sub-pixel 203, and another second sub-pixel 202 are arranged along the first direction X. In the same pixel unit 22, the sum of the light emitting areas of the two second sub-pixels 202 is larger than the light emitting areas of the first sub-pixel 201 and the third sub-pixel 203, so as to compensate the light intensity loss of the second sub-pixel 202 in the original propagation direction due to the reflection of the first crystal 11.
Exemplarily, referring to fig. 9 and 10, the two second sub-pixels 202 are a left second sub-pixel 2021 and a right second sub-pixel 2022, respectively, and in the same pixel unit 22, the first sub-pixel 201, the left second sub-pixel 2021, the third sub-pixel 203, and the right second sub-pixel 2022 are sequentially arranged along the first direction X.
Alternatively, since the human eye is most sensitive to green light, i.e., the human eye is most sensitive to green light, green light of the same brightness has a greater brightness for subjective perception by the human eye at the same brightness, especially for green light having a wavelength of 555 nm. Thus, as a specific example, the optical crystal layer 10 may be designed primarily for green light at 555 nm. At this time, it can satisfy: α θ is 45 ° and λ is 555nm, and the 555nm green light vertically incident on the optical crystal layer 10 is horizontally reflected and then emitted from the side surface of the optical crystal layer 10.
Fig. 11 is a schematic top view illustrating a display module according to another embodiment of the present invention, and fig. 12 is a schematic cross-sectional view taken along the direction EE' in fig. 11, and referring to fig. 11 and 12, a pixel unit 22 includes a plurality of sub-pixels with different light-emitting colors. The optical crystal layer 10 comprises a plurality of second crystals 12, the same second crystal 12 covering at least one sub-pixel of one emission color. In the embodiment of the present invention, the same second crystal 12 covers the sub-pixels of one emission color, and specifically, one second crystal 12 may cover one or more sub-pixels. The different second crystals 12 may cover the sub-pixels with different light-emitting colors, respectively, so that the second crystals 12 may prevent the external incident light from being projected to the sub-pixels with the same light-emitting color covered thereby, and prevent the external incident light from being reflected to the concave mirror 31 by the sub-pixels with the same light-emitting color, thereby preventing the external incident light from entering the eyes of the user due to the reflection of the sub-pixels with the same light-emitting color.
Alternatively, referring to fig. 11 and 12, the plurality of sub-pixels of different emission colors includes a first sub-pixel 201, a second sub-pixel 202, and a third sub-pixel 203, the first sub-pixel 201 emits red light, the second sub-pixel 202 emits green light, and the third sub-pixel 203 emits blue light. The plurality of second crystals 12 includes a first sub-crystal 121, a second sub-crystal 122, and a third sub-crystal 123, the first sub-crystal 121 covers the first sub-pixel 201, the second sub-crystal 122 covers the second sub-pixel 202, and the third sub-crystal 123 covers the third sub-pixel 203. For the sake of convenience of distinction, the crystal plane 100 in the first sub-crystal 121 is referred to as a first crystal plane 101, the crystal plane 100 in the second sub-crystal 122 is referred to as a second crystal plane 102, the crystal plane 100 in the third sub-crystal 123 is referred to as a third crystal plane 103, and the distance between two adjacent parallel first crystal planes 101 in the first sub-crystal 121 is dRThe included angle between the light emitted by the first sub-pixel 201 and the first crystal plane 101 of the first sub-crystal 121 is θRThe center wavelength of the light emitted by the first sub-pixel 201 is λRAnd satisfies the following conditions:
2dR·sinθR＝jR·λR (2)
the distance between two adjacent parallel second crystal faces 102 in the second sub-crystal 122 is dGThe angle between the light emitted from the second sub-pixel 202 and the second crystal surface 102 of the second sub-crystal 122 is θGThe center wavelength of the light emitted by the second sub-pixel 202 is λGAnd satisfies the following conditions:
2dG·sinθG＝jG·λG (3)
the distance between two adjacent parallel third crystal surfaces 103 in the third sub-crystal 123 is dBThe included angle between the light emitted from the third sub-pixel 203 and the third surface 103 of the third sub-crystal 123 is θBThe center wavelength of the light emitted by the third sub-pixel 203 is lambdaBAnd satisfies the following conditions:
2dB·sinθB＝jB·λB (4)
wherein j isR、jGAnd jBAre all positive integers. In the embodiment of the present invention, the first sub-crystal 121 covers the first sub-pixel 201, the second sub-crystal 122 covers the second sub-pixel 202, and the third sub-crystal 123 covers the third sub-pixel 203, so that the first sub-crystal 121 can prevent red light in the external incident light from being projected to the first sub-pixel 201, the second sub-crystal 122 can prevent green light in the external incident light from being projected to the second sub-pixel 202, and the third sub-crystal 123 can prevent blue light in the external incident light from being projected to the third sub-pixel 203, so that red light, green light, and blue light in the external ambient light are prevented from being reflected to the concave mirror 31 by the plurality of sub-pixels, and thus red light, green light, and blue light in the external ambient light are prevented from entering eyes of a user.
Alternatively,
then, thetaR＝θG＝θBThe red light emitted by the first sub-pixel 201 is emitted after passing through the first sub-crystal 121, the green light emitted by the second sub-pixel 202 is emitted after passing through the second sub-crystal 122, and the blue light emitted by the third sub-pixel 203 is emitted after passing through the third sub-crystal 123, and the red light emitted by the first sub-pixel 201, the green light emitted by the second sub-pixel 202, and the blue light emitted by the third sub-pixel 203 can have the same light emitting direction, so that the light emitting brightness of the red light, the green light, and the blue light in the same pixel unit 22 along the same direction can be balanced, and the display effect can be improved.
Alternatively, referring to fig. 11, a plurality of pixel units 22 are arranged in a matrix along a first direction X and a second direction Y, and in the pixel units 22, a first subpixel 201, a second subpixel 202, and a third subpixel 203 are arranged along the first direction X, and the first direction X intersects the second direction Y. Each of the second crystals 12 covers a plurality of sub-pixels arranged in the second direction Y. That is, the first sub-crystal 121 covers the plurality of first sub-pixels 201 arranged in the second direction Y, the second sub-crystal 122 covers the plurality of second sub-pixels 202 arranged in the second direction Y, and the third sub-crystal 123 covers the plurality of third sub-pixels 203 arranged in the second direction Y, so that the number of the first sub-crystal 121, the second sub-crystal 122, and the third sub-crystal 123 is reduced, the coverage area of the first sub-crystal 121, the second sub-crystal 122, and the third sub-crystal 123 is increased, and the process difficulty is reduced.
Exemplarily, referring to fig. 11, the first sub-crystal 121 covers the first sub-pixels 201 arranged in a column in the second direction Y, the second sub-crystal 122 covers the second sub-pixels 202 arranged in a column in the second direction Y, and the third sub-crystal 123 covers the third sub-pixels 203 arranged in a column in the second direction Y.
Fig. 13 is a schematic top view of another display module according to an embodiment of the invention, and referring to fig. 13, a plurality of pixel units 22 are arranged in a matrix along a first direction X and a second direction Y. Each first sub-crystal 121 covers one first sub-pixel 201, each second sub-crystal 122 covers one second sub-pixel 202, and each third sub-crystal 123 covers one third sub-pixel 203.
Exemplarily, referring to fig. 13, in the second direction Y, the plurality of first sub-pixels 201 are repeatedly arranged, and a column of the repeatedly arranged first sub-crystals 121 may be disposed to correspondingly cover the plurality of first sub-pixels 201; in the second direction Y, the plurality of second sub-pixels 202 are repeatedly arranged, and a column of the repeatedly arranged second sub-crystals 122 may be disposed to correspondingly cover the plurality of second sub-pixels 202; in the second direction Y, a plurality of third sub-pixels 203 are repeatedly arranged, and a column of the repeatedly arranged third sub-crystals 123 may be disposed to correspondingly cover the plurality of third sub-pixels 203. In other embodiments, other pixel arrangements and arrangements of the second crystals 12 corresponding to the pixel arrangements may be provided, which may be determined according to the product requirements.
Optionally, referring to fig. 3 to 13, the display module further includes a color film substrate 23 and a plurality of color resistors 25, and the pixel unit 22 includes a plurality of sub-pixels with different light-emitting colors. The color resists 25 are located between the color filter substrate 23 and the pixel units 22. In the direction perpendicular to the color filter substrate 23, the color resistors 25 are overlapped with the sub-pixels one by one. The optical crystal layer 10 is located on the side of the color filter substrate 23 away from the plurality of pixel units 22. In the embodiment of the present invention, the optical crystal layer 10 is located on the side of the color film substrate 23 away from the plurality of pixel units 22, so as to reduce the reflectivity when the external ambient light irradiates the plurality of pixel units 22, and reduce the reflectivity of the display module.
Exemplarily, referring to fig. 3 to 13, the display module may further include an array substrate 21, a black matrix 26, and a linear polarizer 24. The array substrate 21 is located on a side of the plurality of pixel units 22 away from the color filter substrate 23, and the plurality of pixel units 22 are disposed on the array substrate 21. In the first direction X, a black matrix 26 is spaced between two adjacent sub-pixels. The plurality of color resistors 25 may include a first color resistor 251, a second color resistor 252 and a third color resistor 253, any two of the first color resistor 251, the second color resistor 252 and the third color resistor 253 have different transmission colors, and the transmission color refers to a color presented by a light beam or a light ray after passing through the color resistor 25. The first sub-pixel 201 overlaps the first color resistor 251, the second sub-pixel 202 overlaps the second color resistor 252, and the third sub-pixel 203 overlaps the third color resistor 253, so that light projected from the first sub-pixel 201 to the first color resistor 251 is filtered by the first color resistor 251 to appear red, light projected from the second sub-pixel 202 to the second color resistor 252 is filtered by the second color resistor 252 to appear green, and light projected from the third sub-pixel 203 to the third color resistor 253 is filtered by the third color resistor 253 to appear blue. Therefore, in the embodiment of the present invention, each sub-pixel controls the transmittance of each sub-pixel by controlling, for example, the rotation direction of the liquid crystal molecules, and the light emitting color of each sub-pixel refers to the color of the light projected by the sub-pixel to the color resistor 25 overlapped with the sub-pixel, which is well known in the display technology field and will not be described herein again. The linearly polarizing plate 24 is located between the color filter substrate 23 and the optical crystal layer 10. In another embodiment, the optical crystal layer 10 may be provided between the linearly polarizing plate 24 and the color filter substrate 23.
Alternatively, referring to fig. 5-10, the plurality of color resistors 25 includes a first color resistor 251, a second color resistor 252 and a third color resistor 253, wherein the first color resistor 251 transmits red light, the second color resistor 252 transmits green light, and the third color resistor 253 transmits blue light. In the same pixel unit 22, the area of the vertical projection of all the second color resists 252 on the color filter substrate 23 is larger than the area of the vertical projection of the first color resist 251 on the color filter substrate 23, and the area of the vertical projection of all the second color resists 252 on the color filter substrate 23 is larger than the area of the vertical projection of the third color resist 253 on the color filter substrate 23. Since the light emitting areas of all the second sub-pixels 202 in the same pixel unit 22 are larger than the light emitting areas of the first sub-pixel 201 and the third sub-pixel 203, in the embodiment of the present invention, the second color resistor 252 with a larger total area is disposed corresponding to the second sub-pixel 202 with a larger light emitting area in the same pixel unit 22, the first color resistor 251 with a smaller area is disposed corresponding to the first sub-pixel 201 with a smaller light emitting area in the same pixel unit 22, and the third color resistor 253 with a smaller area is disposed corresponding to the third sub-pixel 203 with a smaller light emitting area in the same pixel unit 22, so as to equalize the light emitting luminance of the red light, the green light, and the blue light in the same pixel unit 22 along the same direction. After the color filter substrate 23 and the array substrate 21 are assembled, each sub-pixel corresponds to each color resistor 25 one by one, and there is an area corresponding to the pixel unit 22 on the array substrate 21 on the color filter substrate 23, that is, an area where the pixel unit 22 is located.
For example, referring to fig. 5 and 6, in the region where the same pixel unit 22 is located, the first color resistor 251, the second color resistor 252 and the third color resistor 253 are arranged along the first direction X, the length of the second color resistor 252 along the first direction X is 1 to 3 times (including end points) the length of the first color resistor 251 along the first direction X, and the length of the second color resistor 252 along the first direction X is 1 to 3 times (including end points) the length of the third color resistor 253 along the first direction X.
For example, referring to fig. 7 and 8, in the region where the same pixel unit 22 is located, the first color resistor 251, the two second color resistors 252 and the third color resistor 253 are arranged along the first direction X, the sum of the areas of the two second color resistors 252 is greater than the area of the first color resistor 251, and the sum of the areas of the two second color resistors 252 is greater than the area of the third color resistor 253. The two second color resistors 252 are a left second color resistor 2521 and a right second color resistor 2522, respectively, and the first color resistor 251, the left second color resistor 2521, the right second color resistor 2522 and the third color resistor 253 are sequentially arranged along the first direction X in the region where the same pixel unit 22 is located.
Exemplarily, referring to fig. 9 and 10, in the region where the same pixel unit 22 is located, a first color resistor 251, a second color resistor 252, a third color resistor 253, and another second color resistor 252 are arranged along the first direction X. In the same pixel unit 22, the sum of the areas of the two second color resistors 252 is greater than the area of the first color resistor 251, and the sum of the areas of the two second color resistors 252 is greater than the area of the third color resistor 253, so as to compensate the light intensity loss of the second sub-pixel 202 in the original propagation direction due to the reflection of the first crystal 11. The two second color resistors 252 are a left second color resistor 2521 and a right second color resistor 2522, respectively, and the first color resistor 251, the left second color resistor 2521, the third color resistor 253, and the right second color resistor 2522 are sequentially arranged along the first direction X in the region where the same pixel unit 22 is located.
Fig. 14 is a schematic cross-sectional view of another display module according to an embodiment of the invention, and referring to fig. 14, the display module further includes a thin film encapsulation layer 27, and the optical crystal layer 10 is disposed on a side of the thin film encapsulation layer 27 away from the plurality of pixel units 22. The thin film encapsulation layer 27 may include, for example, an organic insulation layer and an inorganic insulation layer stacked together to prevent external moisture and oxygen from attacking the pixel unit 22, which is beneficial to improving the service life thereof. The pixel unit 22 includes an organic light emitting material layer. The organic light emitting material layer is a self-luminous material, and thus, in the embodiment of the invention, the luminous color of each sub-pixel refers to the color exhibited by the sub-pixel emitting light. In the embodiment of the present invention, the optical crystal layer 10 is located on the side of the thin film encapsulation layer 27 away from the plurality of pixel units 22, so as to reduce the reflectivity when the external ambient light irradiates the plurality of pixel units 22, and reduce the reflectivity of the display module.
Optionally, the display module may further include a circular polarizer (not shown in fig. 14) and a quarter-wave plate (not shown in fig. 14) in addition to the thin film encapsulation layer 27, and the quarter-wave plate is located between the circular polarizer and the thin film encapsulation layer 27. The circular polarizer may be located between the optical crystal layer 10 and the quarter-wave plate. In another embodiment, a quarter-wave plate may also be located between the optical crystal layer 10 and the circular polarizer.
With continued reference to fig. 2 and 4, the facet 100 makes an angle β of 180 ° - α with the surface of the optical crystal layer 10 remote from the plurality of pixel cells 22 on the side facing the concave mirror 31. There is at least one set of mutually parallel crystal planes 100, and in this set of mutually parallel crystal planes 100, β is an obtuse angle. That is, the set of mutually parallel crystal planes 100 is inclined toward concave mirror 31, rather than being inclined away from concave mirror 31. Therefore, when the external ambient light is projected onto the optical crystal layer 10, the light beam reflected by the optical crystal layer 10 is transmitted away from the concave mirror 31, and therefore the light beam of the external incident light reflected by the optical crystal layer 10 is transmitted away from the concave mirror 31, so that the intensity of the visible light in the external ambient light entering the eyes of the user is reduced, and the reflectivity of the display module is reduced. In another embodiment, crystal plane 100 may be inclined away from concave mirror 31, and a light beam reflected by optical crystal layer 10 may be propagated away from concave mirror 31 by setting the position, angle, and the like of optical crystal layer 10 and concave mirror 31.
Fig. 15 is a schematic perspective view of a one-dimensional optical crystal according to an embodiment of the present invention, and referring to fig. 15, a plurality of crystal planes of the one-dimensional optical crystal are parallel to a plane defined by the V direction and the W direction, the plurality of crystal planes are repeatedly arranged along the U direction, and the U direction, the V direction, and the W direction form a cartesian coordinate system. The optical crystal layer 10 in the embodiment of the present invention may be formed by cutting the one-dimensional optical crystal along the direction of the dotted line in fig. 15, and the direction of the dotted line in the UW plane in fig. 15 may be the first direction X.
Fig. 16 is a schematic perspective view of a two-dimensional optical crystal according to an embodiment of the present invention, and referring to fig. 16, a plurality of crystal planes are repeatedly arranged along the U direction, and a plurality of crystal planes are repeatedly arranged along the V direction. Thus, a certain direction in a plane determined in parallel to the U direction and the W direction may be used as the first direction X, or a certain direction in a plane determined in parallel to the V direction and the W direction may be used as the first direction X.
Fig. 17 is a schematic perspective view of a three-dimensional optical crystal according to an embodiment of the present invention, and referring to fig. 17, a plurality of crystal planes are repeatedly arranged along the U direction, a plurality of crystal planes are repeatedly arranged along the V direction, and a plurality of crystal planes are repeatedly arranged along the W direction. Thus, a certain direction in a plane determined in parallel to the U direction and the W direction may be used as the first direction X, a certain direction in a plane determined in parallel to the V direction and the W direction may be used as the first direction X, or a certain direction in a plane determined in parallel to the U direction and the V direction may be used as the first direction X.
Fig. 18 is a schematic view of an automobile according to an embodiment of the present invention, and with reference to fig. 2 and fig. 18, the automobile includes the display module in the above embodiment. Therefore, the display module can meet the requirements of low reflectivity and high color phase at the same time. The user who drives the car can observe the image that the display module assembly shows to weaken and even avoid the user to see the bright spot virtual image that external environment light leads to.
Exemplarily, referring to fig. 18, the automobile includes a main driving seat, a meter console 34 and a windshield 33, the meter console 34 is located between the main driving seat and the windshield 33, and the display module is located inside the meter console 34. Typically, the instrument desk is located below the windshield 33.
Illustratively, referring to fig. 18, the automobile may further be provided with a center console 35 and a joystick, the center console 35 is located between the windshield 33 and the joystick, and the display module may also be located inside the center console 35, that is, the display module may be a display device located at the position of the instrument console 34 or a display device located at the position of the center console 35.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (18)
1. A display module is characterized by comprising a plurality of pixel units and an optical crystal layer, wherein the optical crystal layer is positioned at the light emitting display side of the pixel units;
wherein the optical crystal layer comprises at least one optical crystal, the optical crystal has a structure which is arranged periodically in space and forms at least one group of crystal planes which are parallel to each other, the acute included angle between the crystal planes and the surface of the optical crystal layer, which is far away from the plurality of pixel units, is alpha, and alpha is more than or equal to 20 degrees and less than or equal to 70 degrees;
the distance between two adjacent parallel crystal faces in the optical crystal layer is d, the included angle between the external incident light and the crystal faces is theta, the wavelength of the external incident light is lambda, and the following conditions are met:
wherein j is a positive integer; lambda is more than or equal to 380nm and less than or equal to 780 nm;
the reflection type liquid crystal display device further comprises at least one reflection mirror, wherein the at least one reflection mirror comprises a concave mirror, and the light beam after the external incident light is reflected by the optical crystal layer avoids the concave mirror to propagate.
2. The display module of claim 1, wherein the pixel unit comprises a plurality of sub-pixels with different light emission colors;
the at least one optical crystal includes a first crystal covering the plurality of different emission color sub-pixels.
3. The display module according to claim 2, wherein the plurality of sub-pixels of different emission colors comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel emits red light, the second sub-pixel emits green light, and the third sub-pixel emits blue light;
in the same pixel unit, the light-emitting areas of all the second sub-pixels are larger than the light-emitting areas of the first sub-pixel and the third sub-pixel.
4. The display module according to claim 3, wherein a plurality of the pixel units are arranged in a matrix along a first direction and a second direction, the first direction crossing the second direction;
in the same pixel unit, the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged along the first direction, the length of the first sub-pixel along the first direction is L1, the length of the second sub-pixel along the first direction is L2, the length of the third sub-pixel along the first direction is L3, 1 < L2/L1 is less than or equal to 3, and 1 < L2/L3 is less than or equal to 3.
5. The display module according to claim 3, wherein a plurality of the pixel units are arranged in a matrix along a first direction and a second direction, the first direction crossing the second direction;
in the same pixel unit, the first sub-pixel, the two second sub-pixels, and the third sub-pixel are arranged along the first direction, or,
in the same pixel unit, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the other second sub-pixel are arranged along the first direction.
6. The display module of claim 2,
α＝θ＝45°，λ＝555nm。
7. the display module of claim 1, wherein the pixel unit comprises a plurality of sub-pixels with different light emission colors;
the at least one optical crystal includes a plurality of second crystals, and at least one of the sub-pixels of one emission color is covered by the same second crystal.
8. The display module according to claim 7, wherein the plurality of sub-pixels of different emission colors comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel emits red light, the second sub-pixel emits green light, and the third sub-pixel emits blue light;
the plurality of second crystals include a first sub-crystal, a second sub-crystal, and a third sub-crystal, the first sub-crystal covering the first sub-pixel, the second sub-crystal covering the second sub-pixel, the third sub-crystal covering the third sub-pixel;
the distance between two adjacent parallel crystal faces in the first sub-crystal is dRThe included angle between the light emitted by the first sub-pixel and the crystal plane in the first sub-crystal is thetaRThe central wavelength of the light emitted by the first sub-pixel is lambdaRAnd satisfies the following conditions:
2dRgsinθR＝jRgλR；
the distance between two adjacent parallel crystal faces in the second sub-crystal is dGThe included angle between the light emitted by the second sub-pixel and the crystal plane in the second sub-crystal is thetaGThe central wavelength of the light emitted by the second sub-pixel is lambdaGAnd satisfies the following conditions:
2dGgsinθG＝jGgλG；
the distance between two adjacent parallel crystal faces in the third sub-crystal is dBThe included angle between the light emitted by the third sub-pixel and the crystal plane in the third sub-crystal is thetaBThe central wavelength of the light emitted by the third sub-pixel is lambdaBAnd satisfies the following conditions:
2dBgsinθB＝jBgλB；
wherein j isR、jGAnd jBAre all positive integers.
9. The display module of claim 8,
10. the display module according to claim 8, wherein a plurality of the pixel units are arranged in a matrix along a first direction and a second direction, and in the pixel units, the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged along the first direction, and the first direction intersects with the second direction;
each of the second crystals covers a plurality of the sub-pixels arranged in a second direction.
11. The display module of claim 1, further comprising a color film substrate and a plurality of color resistors, wherein the pixel unit comprises a plurality of sub-pixels with different light-emitting colors; the color resistors are positioned between the color film substrate and the pixel units, and the color resistors and the sub-pixels are overlapped one by one in the direction perpendicular to the color film substrate;
the optical crystal layer is located on one side, far away from the plurality of pixel units, of the color film substrate.
12. The display module of claim 11, wherein the plurality of color resistors comprises a first color resistor, a second color resistor and a third color resistor, the first color resistor transmits red light, the second color resistor transmits green light, and the third color resistor transmits blue light;
in the same region where the pixel unit is located, the area of the vertical projection of all the second color resistors on the color film substrate is larger than the area of the vertical projection of the first color resistors on the color film substrate, and the area of the vertical projection of all the second color resistors on the color film substrate is larger than the area of the vertical projection of the third color resistors on the color film substrate.
13. The display module of claim 1, further comprising a thin film encapsulation layer, the optical crystal layer being located on a side of the thin film encapsulation layer away from the plurality of pixel cells; the pixel unit includes an organic light emitting material layer.
14. The display module according to claim 1, wherein there is at least one set of mutually parallel crystal planes, and an included angle between the crystal plane and a side surface of the optical crystal layer away from the plurality of pixel units on a side facing the concave mirror is an obtuse angle.
15. The display module according to claim 1, wherein:
16. The display module according to claim 1, wherein:
2dgsinθ＝jgλ。
17. an automobile, characterized by comprising the display module of any one of claims 1-16.
18. The automobile of claim 17, further comprising a main operator's seat, an instrument desk and a windshield, the instrument desk being located between the main operator's seat and the windshield, the display module being located inside the instrument desk.
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| US20070177076A1 (en) * | 2003-01-14 | 2007-08-02 | Samsung Electrics Co., Ltd. | Liquid crystal display device |
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| CN105510999A (en) * | 2016-01-28 | 2016-04-20 | 京东方科技集团股份有限公司 | Antireflection structure, manufacturing method thereof, displayer and manufacturing method thereof |
| CN107925012A (en) * | 2016-03-08 | 2018-04-17 | 株式会社Lg化学 | Display device |
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| US20070177076A1 (en) * | 2003-01-14 | 2007-08-02 | Samsung Electrics Co., Ltd. | Liquid crystal display device |
| JP2004271678A (en) * | 2003-03-06 | 2004-09-30 | Seiko Epson Corp | Liquid crystal display device and electronic appliance |
| CN105093620A (en) * | 2015-08-07 | 2015-11-25 | 深圳市华星光电技术有限公司 | Public advertisement display screen and manufacture method thereof |
| CN105510999A (en) * | 2016-01-28 | 2016-04-20 | 京东方科技集团股份有限公司 | Antireflection structure, manufacturing method thereof, displayer and manufacturing method thereof |
| CN107925012A (en) * | 2016-03-08 | 2018-04-17 | 株式会社Lg化学 | Display device |
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