CN108983487B - Liquid crystal display panel and display device - Google Patents
Liquid crystal display panel and display device Download PDFInfo
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- CN108983487B CN108983487B CN201811012315.2A CN201811012315A CN108983487B CN 108983487 B CN108983487 B CN 108983487B CN 201811012315 A CN201811012315 A CN 201811012315A CN 108983487 B CN108983487 B CN 108983487B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
- G02F1/133507—Films for enhancing the luminance
Abstract
The invention discloses a liquid crystal display panel and a display device, wherein the liquid crystal display panel comprises: the liquid crystal display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area and a display area surrounding the first light-transmitting area; in the first light-transmitting area, the array substrate comprises a first substrate, and the opposite substrate comprises a second substrate; the first light transmission area is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate and/or the second substrate. Through set up first antireflection structure in first light transmission region, can reduce the light reflection that the light that is located the backlight of display area and sends produced at the surface of first substrate base plate and/or second substrate base plate to alleviate the problem that the liquid crystal display panel appears the light leak in first light transmission region.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a liquid crystal display panel and a display device.
Background
At present, display panels designed by a full screen are more and more popular with consumers, the full screen is designed by adopting a peripheral ultra-narrow frame, and is combined with a panel framework designed by digging holes in a display area and placing a camera, and the full screen is the panel framework with the highest proportion of the panel display screen.
In the liquid crystal display panel, a light-transmitting area is formed at the position of the hole, so that the camera can acquire images through the light-transmitting area, but oblique light emitted by a backlight source positioned in the display area can be transmitted to the light-transmitting area through structures such as a transparent substrate, so that the liquid crystal display panel has a light leakage phenomenon in the light-transmitting area, and certain light can enter the camera in a reflecting mode. Therefore, a part of the light signals received by the camera is not from the photographic content, but is interference signals emitted by the backlight source.
Therefore, how to alleviate the light leakage phenomenon of the liquid crystal display panel in the light-transmitting area is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a liquid crystal display panel and a display device, which are used for solving the problem of light leakage at a light-transmitting area in the prior art.
An embodiment of the present invention provides a liquid crystal display panel, including: the liquid crystal display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the opposite substrate;
the liquid crystal display panel comprises a first light-transmitting area and a display area surrounding the first light-transmitting area;
in the first light-transmitting area, the array substrate comprises a first substrate, and the opposite substrate comprises a second substrate; the first light transmission area is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light of the surface of the first substrate and/or the second substrate.
In a possible implementation manner, in the liquid crystal display panel provided in the embodiment of the present invention, the first anti-reflection structure includes the first substrate and/or the second substrate, and a thickness of the first substrate and/or the second substrate satisfies the following formula:
wherein d1 represents a thickness of the first substrate base board and/or the second substrate base board, n1 represents a refractive index of the first substrate base board and/or the second substrate base board, λ represents an incident light wavelength, and k represents a natural number.
In a possible implementation manner, in the liquid crystal display panel provided in the embodiment of the present invention, the first antireflection structure includes at least one first antireflection film layer, the first antireflection film layer is located on a side of the first substrate facing away from the second substrate, and/or the first antireflection film layer is located on a side of the first substrate facing the second substrate; the thickness of the first antireflection film layer satisfies the following formula:
where d2 denotes the thickness of the first antireflection film layer, n2 denotes the refractive index of the first antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
In a possible implementation manner, in the liquid crystal display panel provided in the embodiment of the present invention, the first antireflection structure further includes at least one second antireflection film layer located on a side of the second substrate facing away from the first substrate, and/or located on a side of the second substrate facing the first substrate; the thickness of the second antireflection film layer satisfies the following formula:
where d3 denotes the thickness of the second antireflection film layer, n3 denotes the refractive index of the second antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
In a possible implementation manner, in the liquid crystal display panel provided in the embodiment of the present invention, the first antireflection structure includes a third antireflection film layer located between the first substrate and the second substrate, and the third antireflection film layer and the liquid crystal layer are disposed in the same layer; wherein the content of the first and second substances,
the refractive index n4 of the third antireflection film layer satisfies the following formula:
wherein d4 represents the cell thickness of the liquid crystal display panel, n1 represents the refractive index of the first substrate base plate, n4 represents the refractive index of the third antireflection film layer, λ represents the wavelength of incident light, and k represents a natural number.
In a possible implementation manner, in the liquid crystal display panel provided in an embodiment of the present invention, a shape of the first light-transmitting area includes: any one or combination of circular, oval or square.
On the other hand, an embodiment of the present invention further provides a display device, including the liquid crystal display panel according to any of the above embodiments, and further including a backlight source located on a side away from the light exit surface of the liquid crystal display panel;
the backlight source comprises a second light-transmitting area, and the orthographic projection of the second light-transmitting area on the substrate at least covers the orthographic projection of the first light-transmitting area on the substrate;
the overlapping part of the orthographic projection of the second light-transmitting area on the substrate and the orthographic projection of the first light-transmitting area on the substrate forms a light-transmitting area.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, a protective cover plate is further included on a side of the opposite substrate facing away from the array substrate, and a region of the protective cover plate corresponding to the light-transmitting region includes a second anti-reflection structure; the second antireflection structure is used for reducing the reflected light of the surface of the protective cover plate.
In a possible implementation manner, in the display device provided in an embodiment of the present invention, the second antireflection structure includes at least one fourth antireflection film layer, where the fourth antireflection film layer is located on a side of the protective cover plate facing the opposite substrate, and/or the fourth antireflection film layer is located on a side of the protective cover plate facing away from the opposite substrate; wherein the thickness of the fourth antireflection film layer satisfies the following formula:
where d5 denotes the thickness of the fourth antireflection film layer, n5 denotes the refractive index of the fourth antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
In a possible implementation manner, in the display device provided in an embodiment of the present invention, the display device further includes: the orthographic projection of the light-transmitting area on the substrate at least covers the orthographic projection of the camera module on the substrate.
In a possible implementation manner, in the above display device provided by the embodiment of the present invention, when the array substrate and the opposite substrate are both provided with substrate substrates in the light-transmitting region, the camera module is located on a side of the array substrate facing away from the opposite substrate.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, the camera module is at least partially located in the second light-transmitting area.
The invention has the following beneficial effects:
the embodiment of the invention provides a liquid crystal display panel and a display device, wherein the liquid crystal display panel comprises: the liquid crystal display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area and a display area surrounding the first light-transmitting area; in the first light-transmitting area, the array substrate comprises a first substrate, and the opposite substrate comprises a second substrate; the first light transmission area is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate and/or the second substrate. Through set up first antireflection structure in first light transmission region, can reduce the light reflection that the light that is located the backlight of display area and sends produced at the surface of first substrate base plate and/or second substrate base plate to alleviate the problem that the liquid crystal display panel appears the light leak in first light transmission region.
Drawings
Fig. 1 is a schematic structural diagram of a display device in the related art;
FIG. 2 is a schematic cross-sectional view taken along line A1-A2 of FIG. 1;
fig. 3 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 5 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 6 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 7 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 8 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 9 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
FIG. 10 is another schematic cross-sectional view taken along line B1-B2 of FIG. 3;
fig. 11 is a schematic structural view of a display device including the liquid crystal display panel shown in any one of fig. 4 to 9;
FIG. 12 is a schematic cross-sectional view taken along line B1-B2 of FIG. 11;
FIG. 13 is another schematic cross-sectional view taken along line B1-B2 of FIG. 11;
FIG. 14 is another schematic cross-sectional view taken along line B1-B2 of FIG. 11;
FIG. 15 is another schematic cross-sectional view taken along line B1-B2 of FIG. 11;
FIG. 16 is another schematic cross-sectional view taken along line B1-B2 of FIG. 11;
FIG. 17 is another schematic cross-sectional view taken along line B1-B2 of FIG. 11;
fig. 18 is a schematic view showing the antireflection principle.
Detailed Description
In order to realize the overall screen design of the display panel, as shown in fig. 1, a hole needs to be formed in the display area to form a light-transmitting area, and the light-transmitting area is arranged corresponding to the camera or other components to realize corresponding functions. As shown in fig. 2, the display panel includes an array substrate 1 and an opposite substrate 2 disposed oppositely, a liquid crystal layer 3 and a frame sealing adhesive 4 disposed between the array substrate 1 and the opposite substrate 2, and a package cover plate 5 disposed above the opposite substrate 2; the backlight 6 is disposed at a position corresponding to the display area of the display panel for displaying, and the oblique light emitted from the backlight 6 forms a reflected light (indicated by an arrow in the figure) under the action of the array substrate 1, and even forms a reflected light under the action of the opposite substrate 2, so that the light leakage phenomenon occurs in the light-transmitting area. The array substrate 1 and the opposite substrate 2 shown in fig. 2 include substrate substrates in a light-transmitting area, and if the camera 7 is disposed in the light-transmitting area, light leaked from the light-transmitting area may affect light sensed by the camera 7, thereby affecting a photographed image.
The embodiment of the invention provides a liquid crystal display panel and a display device, aiming at the problem of light leakage of a light-transmitting area of the liquid crystal display panel in the related art. In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of a liquid crystal display panel and a display device according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not to be used for limiting the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
The present invention provides a liquid crystal display panel, as shown in fig. 3 to 9, including: an array substrate and an opposite substrate which are oppositely arranged, and a liquid crystal layer 12 which is positioned between the array substrate and the opposite substrate;
the liquid crystal display panel comprises a first light-transmitting area b and a display area a surrounding the first light-transmitting area;
in the first light-transmitting region b, the array substrate includes a first substrate 10, and the opposite substrate includes a second substrate 11; the first light transmission region b is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate 10 and/or the second substrate 11.
According to the liquid crystal display panel provided by the embodiment of the invention, the first antireflection structure is arranged in the first light transmission area, so that the reflected light generated by the light emitted by the backlight source positioned in the display area on the surface of the first substrate and/or the second substrate can be reduced, and the problem of light leakage of the liquid crystal display panel in the first light transmission area is relieved.
Specifically, in the liquid crystal display panel provided in the embodiment of the present invention, in order to implement a full-screen design, the first light-transmitting area is disposed at a position surrounded by the display area, where the first light-transmitting area may be located at any position surrounded by the display area, for example, as shown in fig. 3, the first light-transmitting area b may be located at an upper left of the display panel, or may be located at another position, which is not limited specifically herein. In addition, in the liquid crystal display panel, the number of the first light-transmitting areas may be one, or a plurality of the first light-transmitting areas may be provided according to actual needs, and is not particularly limited herein. The shape of the first light-transmitting region is not limited, and may be circular, elliptical, square, or the like, and is specifically designed as necessary, and the first light-transmitting region is illustrated as a circle in fig. 3.
The first light-transmitting area is arranged to allow the first light-transmitting area to transmit external light, but not to transmit light emitted by the backlight source, and on the contrary, the light emitted by the backlight source is prevented from interfering with light rays in the first light-transmitting area. If the camera is arranged at the first light-transmitting area, the problem of disordered ghost images of images during photographing can be caused when light leakage occurs.
It should be noted that, in the liquid crystal display panel provided in the embodiment of the present invention, as shown in fig. 3 to fig. 9, the array substrate and the opposite substrate each include a substrate in the first light-transmitting region b, the first light-transmitting region b is a blind hole, the first light-transmitting region b is not displayed as a non-display region, that is, there is no shielding pattern but there is a transparent medium, for example, the substrate is disposed on the whole surface, and the substrate does not need to be patterned, which reduces the manufacturing process.
The principle of the first antireflection structure of the liquid crystal display panel provided by the embodiment of the present invention is described in detail below by specific embodiments:
the first embodiment is as follows:
as shown in fig. 4, includes: an array substrate and an opposite substrate which are oppositely arranged, and a liquid crystal layer 12 which is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area b and a display area a surrounding the first light-transmitting area; in the first light-transmitting region b, the array substrate includes a first substrate 10, and the opposite substrate includes a second substrate 11; the first light transmission region b is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate 10 and/or the second substrate 11. Specifically, the first antireflection structure includes the first substrate 10 and/or the second substrate 11, that is, the first antireflection structure of the present embodiment is the first substrate 10 and/or the second substrate 11 located in the first light transmission region b, and the thickness d1 of the first substrate 10 and/or the second substrate 11 satisfies the following formula:
where d1 denotes a thickness of the first substrate 10 and/or the second substrate 11, n1 denotes a refractive index of the first substrate 10 and/or the second substrate 11, λ denotes an incident light wavelength, and k denotes a natural number.
According to the principle of the antireflection film: when the incident lights λ 1 and λ 2 enter the optical medium a, the upper layer and the lower layer of the optical medium a respectively reflect the incident lights, and when the two beams of reflected lights λ 1 'and λ 2' interfere with each other, the intensities of the reflected lights λ 1 'and λ 2' will be greatly reduced, and only the transmitted light T exits the optical medium a, as shown in fig. 18; specifically, in fig. 4, the optical medium where the reflected light interferes is the first substrate 10 and/or the second substrate 11, the thickness of the first substrate 10 and/or the second substrate 11 is d1, d1 is related to the wavelength λ of the incident light and the refractive index n1 of the first substrate 10 and/or the second substrate 11, and the above formula is satisfied
Since the first substrate 10 and the second substrate 11 are generally glass substrates and have a refractive index of generally 1.5, when the thickness of the first substrate 10 and the second substrate 11 is 0.1347mm to 0.1498mm (in this case, k is 755), the wavelength λ of incident light can be calculated to be in the range of 530nm to 600nm, and the scattered light of the backlight can be caused to interfere with the surface of the first substrate 10 and/or the second substrate 11, and only transmitted light can be obtained; therefore, light with a relatively bright part (wavelength of 530 nm-600 nm) in the backlight can be prevented from being incident on the first substrateThe surface of the second substrate 10 and/or the surface of the second substrate 11 generate reflected light (indicated by arrows in the figure) to enter the camera module, so as to alleviate the problem of light leakage of the liquid crystal display panel in the first light-transmitting area b.
It should be noted that, in the liquid crystal display panel provided in the embodiment of the present invention, as shown in fig. 4, the first antireflection structure including the first substrate 10 and/or the second substrate 11 is three schemes that the first antireflection structure includes the first substrate 10, the first antireflection structure includes the second substrate 11, or the first antireflection structure includes the first substrate 10 and the second substrate 11, and as long as one of the first substrate 10 and the second substrate 11 satisfies the above formula or the thicknesses of the two satisfy the above formula, the reduction of the reflected light generated by the light emitted from the backlight source located in the display area on the surface of the first substrate 10 and/or the second substrate 11 can be achieved to alleviate the problem of light leakage of the liquid crystal display panel in the first light transmission area b.
Example two:
as shown in fig. 5, 6 and 7, the present invention includes: an array substrate and an opposite substrate which are oppositely arranged, and a liquid crystal layer 12 which is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area b and a display area a surrounding the first light-transmitting area; in the first light-transmitting region b, the array substrate includes a first substrate 10, and the opposite substrate includes a second substrate 11; the first light transmission region b is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate 10 and/or the second substrate 11. Specifically, the first antireflection structure comprises at least one first antireflection film layer 13, the first antireflection film layer 13 is positioned on one side of the first substrate 10, which is back to the second substrate 11, and/or the first antireflection film layer 12 is positioned on one side of the first substrate 10, which faces the second substrate 11; thickness d2 of first antireflection film layer 13 satisfies the following equation:
where d2 denotes the thickness of the first antireflection film layer 13, n2 denotes the refractive index of the first antireflection film layer 13, λ denotes the wavelength of incident light, and k denotes a natural number.
Specifically, fig. 5 illustrates an example of disposing the first antireflection film layer 13 on a side of the first substrate 10 opposite to the second substrate 11, fig. 6 illustrates an example of disposing the first antireflection film layer 13 on a side of the first substrate 10 facing the second substrate 11, and fig. 7 illustrates an example of disposing the first antireflection film layer 13 on both sides of the first substrate 10.
Specifically, in fig. 5, 6 and 7, the light medium where the reflected light interferes is the first antireflection film layer 13, the thickness of the first antireflection film layer 13 is d2, d2 is related to the wavelength λ of the incident light and the refractive index n2 of the first antireflection film layer 13, and the above formula is satisfied
According to the principle of the antireflection film: when the incident lights λ 1 and λ 2 enter the optical medium a, the upper layer and the lower layer of the optical medium a respectively reflect the incident lights, and when the two beams of reflected lights λ 1 'and λ 2' interfere with each other, the intensities of the reflected lights λ 1 'and λ 2' will be greatly reduced, and only the transmitted light T exits the optical medium a, as shown in fig. 18; therefore, by properly selecting the thickness d2 and the refractive index n2 of the first antireflection film layer 13, it is possible to prevent the light of the bright portion of the backlight from generating reflected light (shown by an arrow in the figure) on the surface of the first substrate 10 and entering the camera module, so as to alleviate the problem of light leakage of the liquid crystal display panel in the first light-transmitting region b.
In one embodiment, thickness d2 of first antireflection layer 13 is designed according to the refractive index of the material used and the wavelength of the light to be transmitted.
Example three:
as shown in fig. 8 and 9, includes: an array substrate and an opposite substrate which are oppositely arranged, and a liquid crystal layer 12 which is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area b and a display area a surrounding the first light-transmitting area; in the first light-transmitting region b, the array substrate includes a first substrate 10, and the opposite substrate includes a second substrate 11; the first light transmission region b is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate 10 and/or the second substrate 11. Specifically, the first antireflection structure further includes at least one second antireflection film layer 14 located on a side of the second substrate 11 opposite to the first substrate 10, and/or located on a side of the second substrate 11 facing the first substrate 10; thickness d3 of second antireflective film layer 14 satisfies the following equation:
where d3 denotes the thickness of the second antireflection film layer 14, n3 denotes the refractive index of the second antireflection film layer 14, λ denotes the wavelength of incident light, and k denotes a natural number.
Specifically, fig. 8 illustrates an example in which at least one second antireflection film layer 14 is disposed on a side of the second substrate 11 facing the first substrate 10 on the basis that the first substrate 10 and/or the second substrate 11 shown in fig. 4 are/is of the first antireflection structure, but it is also possible to dispose at least one second antireflection film layer 14 on a side of the second substrate 11 opposite to the first substrate 10 on the basis that is shown in fig. 4, or dispose at least one second antireflection film layer 14 on both sides of the second substrate 11 on the basis that is shown in fig. 4. Fig. 9 illustrates an example in which the first antireflection film layer 13 is disposed on both sides of the first substrate 10 shown in fig. 7, and the second antireflection film layer 14 is disposed on one side of the second substrate 11 facing the first substrate 10, but it is also possible to dispose the second antireflection film layer 14 on one side of the second substrate 11 opposite to the first substrate 10 or dispose the second antireflection film layer 14 on both sides of the second substrate 11 also shown in fig. 7.
Specifically, in fig. 8, the optical medium where the reflected light interference occurs is the first substrate 10 and/or the second substrate 11, and the second antireflection film layer 14; specifically, the thickness d1 of the first substrate board 10 and/or the second substrate board 11 satisfies the requirement of preventing the brighter portion (wave) in the backlight in the embodiment of fig. 4530 nm-600 nm) generates a reflected light (indicated by an arrow in the figure) on the surface of the first substrate 10 and/or the second substrate 11, and the reflected light enters the camera module, so as to alleviate the problem of light leakage of the liquid crystal display panel in the first light-transmitting area b, which is described in detail in the embodiment of fig. 4 and is not repeated herein. In fig. 9, on the basis that the first antireflection film layer 13 is disposed on both sides of the first substrate 10 shown in fig. 7, the second antireflection film layer 14 is further disposed on the optical medium where the reflected light interferes, the thickness of the second antireflection film layer 14 is d3, d3 is related to the incident light wavelength λ and the refractive index n3 of the second antireflection film layer 14, and the above formula is satisfied
According to the principle of the antireflection film: when the incident lights λ 1 and λ 2 enter the optical medium a, the upper layer and the lower layer of the optical medium a respectively reflect the incident lights, and when the two beams of reflected lights λ 1 'and λ 2' interfere with each other, the intensities of the reflected lights λ 1 'and λ 2' will be greatly reduced, and only the transmitted light T exits the optical medium a, as shown in fig. 18; therefore, the thickness d3 and the refractive index n3 of the second antireflection film layer 14 are reasonably selected, and the thickness d3 of the second antireflection film layer 14 is designed according to the refractive index of the used material and the wavelength of the light to be transmitted, so that the light of the bright part in the backlight source can be further prevented from generating reflected light on the surface of the second substrate base plate 11 and entering the camera module, and the problem of light leakage of the liquid crystal display panel in the first light transmission area b is further solved.
Similarly, in fig. 9, the light medium where the reflected light interferes is the first antireflection film layer 13 and the second antireflection film layer 14; the embodiment of using the first antireflection film layer 13 to prevent the light of the bright portion in the backlight from generating the reflected light on the surface of the first substrate 10 and entering the camera module refers to the embodiments shown in fig. 5, fig. 6 and fig. 7, which are not described herein again.
Example three:
as shown in fig. 10, includes: an array substrate and an opposite substrate which are oppositely arranged, and a liquid crystal layer 12 which is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area b and a display area a surrounding the first light-transmitting area; in the first light-transmitting region b, the array substrate includes a first substrate 10, and the opposite substrate includes a second substrate 11; the first light transmission region b is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate 10 and/or the second substrate 11. Specifically, the first antireflection structure includes a third antireflection film layer 15 located between the first substrate base plate 10 and the second substrate base plate 11, and the third antireflection film layer 15 and the liquid crystal layer 12 are arranged in the same layer; in specific implementation, when the liquid crystal layer 12 is manufactured, the refractive index of the liquid crystal layer 12 in the first light transmission region b is specially designed to obtain the third antireflection film layer 15 with antireflection function, that is, the refractive index n4 of the third antireflection film layer 15 satisfies the following formula:
where d4 denotes the cell thickness of the liquid crystal display panel, n1 denotes the refractive index of the first substrate base plate 10, n4 denotes the refractive index of the third antireflection film layer 15, λ denotes the wavelength of incident light, and k denotes a natural number.
Specifically, in fig. 10, the light medium where the reflected light interferes is the third antireflection film layer 15, and the refractive index n4 of the third antireflection film layer 15 satisfies the formula:
according to the principle of the antireflection film: when the incident lights λ 1 and λ 2 enter the optical medium a, the upper layer and the lower layer of the optical medium a respectively reflect the incident lights, and when the two beams of reflected lights λ 1 'and λ 2' interfere with each other, the intensities of the reflected lights λ 1 'and λ 2' will be greatly reduced, and only the transmitted light T exits the optical medium a, as shown in fig. 18; specifically, when n1 is 1.5 and the cell thickness d4 is 3.0 μm, n4 should be in the range of 1.429 to 1.617 (in this case, k is 10) in order to prevent reflection of the brightest part of the backlight having a wavelength of 530nm to 600 nm. Therefore, by providing the third antireflection film layer 15 on the same layer as the liquid crystal layer, the light of the bright part (with a wavelength of 530 nm-600 nm) in the backlight source can be prevented from generating reflected light on the surface of the first substrate 10 and/or the second substrate 11 and entering the camera module, so as to alleviate the problem that the reflected light enters the camera moduleThe display panel has a problem of light leakage in the first light-transmitting area b.
Certainly, in a specific implementation, the third antireflection film layer 15 may also have the same structure as the first antireflection film layer 13 and the second antireflection film layer 14 in the foregoing embodiment, so that the patterns of the third antireflection film layer 15 and the liquid crystal layer 12 may be formed through a single patterning process, which may simplify a preparation process, save a production cost, and improve a production efficiency.
In a specific implementation, as shown in fig. 4 to 10, the liquid crystal display panel according to the embodiment of the invention further includes a frame sealing adhesive 16 located between the array substrate and the opposite substrate, where the frame sealing adhesive 16 is the same as the frame sealing adhesive in the prior art, and will not be described in detail herein.
Optionally, in the liquid crystal display panel provided in the embodiment of the present invention, the shape of the first light-transmitting area includes: any one or combination of circular, oval or square.
Specifically, in the liquid crystal display panel provided in the embodiment of the present invention, the shape of the first light-transmitting area may be a circle, an ellipse, or a square in the above embodiments, or may be any combination pattern or irregular pattern, and is selected according to the actual use situation in specific use.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 11 to 17, including the liquid crystal display panel provided in any of the above embodiments, and further including a backlight source 17 located on a side away from a light emitting surface of the liquid crystal display panel;
the backlight source 17 comprises a second light-transmitting area c, and the orthographic projection of the second light-transmitting area c on the substrate at least covers the orthographic projection of the first light-transmitting area b on the substrate;
the overlapping part of the orthographic projection of the second light-transmitting area c on the substrate and the orthographic projection of the first light-transmitting area b on the substrate forms a light-transmitting area.
Specifically, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, the backlight source 17 is cut into a through hole at a position corresponding to the first light-transmitting area b of the liquid crystal display panel to form a second light-transmitting area c, wherein an orthogonal projection of the formed second light-transmitting area c on the substrate is greater than or equal to an orthogonal projection of the first light-transmitting area b on the substrate, a portion of the second light-transmitting area c overlapping with the first light-transmitting area b forms a light-transmitting area, so that external light can transmit through the light-transmitting area, and if the camera is disposed in the light-transmitting area, the camera can collect an image to be photographed through the light transmitted through the light-transmitting area.
Optionally, in order to increase the transmittance of the external light and further enhance the camera module receiving the external light signal, as shown in fig. 12 to 17, the display device provided in the embodiment of the present invention further includes a protective cover 18 located on a side of the opposite substrate facing away from the array substrate (the second substrate 11 facing away from the first substrate 10), where a region of the protective cover 18 corresponding to the light-transmitting region includes a second anti-reflection structure; wherein the second anti-reflection structure is used to reduce the reflected light on the surface of the protective cover 18.
Specifically, in the display device provided in the embodiment of the present invention, the display panel is protected by arranging the protective cover plate, or the touch structure is directly fabricated on the protective cover plate to implement the touch function.
Specifically, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, the second antireflection structure includes at least one fourth antireflection film layer 19, the fourth antireflection film layer 19 is located on a side of the protective cover plate 18 facing the opposite substrate, and/or the fourth antireflection film layer 19 is located on a side of the protective cover plate 18 facing away from the opposite substrate; the thickness d5 of the fourth antireflection film layer satisfies the following formula:
where d5 denotes the thickness of the fourth antireflection film layer, n5 denotes the refractive index of the fourth antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
Specifically, fig. 12 illustrates an example in which the fourth antireflection film layer 19 is disposed on the side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 4, but it is needless to say that the fourth antireflection film layer 19 may also be disposed on the side of the protective cover 18 opposite to the opposite substrate on the basis shown in fig. 4, or the fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 4.
Specifically, fig. 13 illustrates an example in which a fourth antireflection film layer 19 is disposed on one side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 5, but it is needless to say that a fourth antireflection film layer 19 may be disposed on one side of the protective cover 18 facing away from the opposite substrate on the basis shown in fig. 5, or fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 5, or a fourth antireflection film layer 19 may be disposed on one side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 6, or a fourth antireflection film layer 19 may be disposed on one side of the protective cover 18 facing away from the opposite substrate on the basis shown in fig. 6, or fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 6.
Specifically, fig. 14 illustrates an example in which the fourth antireflection film layer 19 is disposed on the side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 7, but it is needless to say that the fourth antireflection film layer 19 may be disposed on the side of the protective cover 18 opposite to the opposite substrate on the basis shown in fig. 7, or the fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 7.
Specifically, fig. 15 illustrates an example in which the fourth antireflection film layer 19 is disposed on the side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 8, but it is needless to say that the fourth antireflection film layer 19 may also be disposed on the side of the protective cover 18 opposite to the opposite substrate on the basis shown in fig. 8, or the fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 8.
Specifically, fig. 16 illustrates an example in which a fourth antireflection film layer 19 is disposed on a side of the protective cover plate 18 facing the opposite substrate on the basis of fig. 9, but it is needless to say that a fourth antireflection film layer 19 may be disposed on a side of the protective cover plate 18 opposite to the opposite substrate on the basis of fig. 9, or fourth antireflection film layers 19 may be disposed on both sides of the protective cover plate 18 on the basis of fig. 9.
Specifically, fig. 17 illustrates an example in which the fourth antireflection film layer 19 is disposed on the side of the protective cover 18 facing the opposite substrate on the basis shown in fig. 10, but it is needless to say that the fourth antireflection film layer 19 may be disposed on the side of the protective cover 18 opposite to the opposite substrate on the basis shown in fig. 10, or the fourth antireflection film layers 19 may be disposed on both sides of the protective cover 18 on the basis shown in fig. 10.
Specifically, in fig. 12 to 17, in the embodiments of fig. 4 to 10, reflected light generated by light of a bright portion (with a wavelength of 530nm to 600nm) in the backlight source is prevented from entering the camera module on the surface of the first substrate 10 and/or the second substrate 11, so as to alleviate the problem of light leakage of the liquid crystal display panel in the first light transmission region b, in order to increase the external light transmittance and further enhance the camera module receiving the external light signal, the light medium where the reflected light interferes is the fourth anti-reflection film layer 19, the thickness of the fourth anti-reflection film layer 19 is d5, the d5 is related to the wavelength λ of the incident light and the refractive index n5 of the fourth anti-reflection film layer 19, and the above formula is satisfied
According to the principle of the antireflection film: when the incident lights λ 1 and λ 2 enter the optical medium a, the upper layer and the lower layer of the optical medium a respectively reflect the incident lights, and when the two beams of reflected lights λ 1 'and λ 2' interfere with each other, the intensities of the reflected lights λ 1 'and λ 2' will be greatly reduced, and only the transmitted light T exits the optical medium a, as shown in fig. 10; therefore, by properly selecting the thickness d5 and the refractive index n5 of the fourth antireflection film layer 19, the external light transmittance (indicated by an arrow) can be increased, and the reception of external light signals by the camera module can be enhanced. Thickness d5 of fourth antireflection film layer 19 is designed according to the refractive index of the material used and the wavelength of the light to be transmitted. Therefore, the problem that light of a bright part (with the wavelength of 530 nm-600 nm) in the backlight source is prevented from generating reflected light on the surfaces of the first substrate base plate 10 and/or the second substrate base plate 11 and entering the camera module so as to relieve the light leakage of the liquid crystal display panel in the first light-transmitting area b is solved; and can increase the external light transmittance, thereby enhancing the receiving of the camera moduleAn ambient light signal.
In the liquid crystal display panel according to the embodiment of the invention, as shown in fig. 12 to 17, the fourth antireflection film layer 19 is only disposed on one side of the protective cover 18 facing the opposite substrate; of course, a fourth antireflection film layer 19 may be disposed on the side of the protection cover plate 18 opposite to the opposite substrate, or the fourth antireflection film layers 19 may be disposed on both sides of the protection cover plate 18, the principle is the same as that shown in fig. 11 to 15, and details thereof are not described here.
It should be noted that, in the liquid crystal display panel provided in the embodiment of the present invention, the first antireflection film layer and the second antireflection film layer are both one layer, and certainly, may be multiple layers, where the antireflection effect is better when the layers are multiple, but the thickness of the module is also increased, and in the specific implementation, the first antireflection film layer and the second antireflection film layer may be arranged according to needs, and are not specifically limited herein.
It should be noted that, in the liquid crystal display panel provided in the embodiment of the present invention, when the third antireflection film layer is a newly added antireflection film layer, the third antireflection film layer may be one layer or multiple layers, and the antireflection effect is better in multiple layers, but the thickness of the module may also be increased.
Specifically, in the display device provided in the embodiment of the present invention, the material of the first antireflection film layer and the second antireflection film layer may be MgF2(refractive index 1.37) and the like; when the third antireflection film layer is a newly added antireflection film layer, the material of the third antireflection film layer may be MgF2(refractive index: 1.37) and the like.
Optionally, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, the display device further includes: the orthographic projection of the light-transmitting area on the substrate of the camera module 19 at least covers the orthographic projection of the camera module 19 on the substrate.
Specifically, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, since the light-transmitting region is provided, the camera module 20 can be disposed at a position corresponding to the light-transmitting region, so that a requirement that the camera module 20 senses external light can be met, and the camera module does not need to be disposed at other positions of the display device, thereby ensuring a display area of the display device.
Specifically, in the above-described display device according to the embodiment of the present invention, as shown in fig. 12 to 17, when the array substrate and the counter substrate are both provided with the substrate substrates (the first substrate 10 and the second substrate 11) in the light-transmitting region, the camera module 20 is located on a side of the array substrate facing away from the counter substrate.
Specifically, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, when the substrate base substrate is disposed on both the array substrate and the opposite substrate in the light-transmitting area, the camera module 20 or a part of the camera module 20 may be disposed in the second light-transmitting area c, or the camera module 20 may be disposed on a side of the backlight 17 facing away from the display panel. Although the light-transmitting region includes the base substrate, the base substrate has good light-transmitting property, and the camera module 20 can sufficiently sense external light to capture a clear image.
Therefore, specifically, in the display device provided in the embodiment of the present invention, as shown in fig. 12 to 17, the camera module 20 is at least partially located in the second light-transmitting area c.
The display device provided by the above embodiment of the present invention may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The display device can be implemented by referring to the above embodiments, and repeated descriptions are omitted.
The liquid crystal display panel and the display device provided by the embodiment of the invention comprise: the liquid crystal display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the opposite substrate; the liquid crystal display panel comprises a first light-transmitting area and a display area surrounding the first light-transmitting area; in the first light-transmitting area, the array substrate comprises a first substrate, and the opposite substrate comprises a second substrate; the first light transmission area is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflection light on the surface of the first substrate and/or the second substrate. Through set up first antireflection structure in first light transmission region, can reduce the light reflection that the light that is located the backlight of display area and sends produced at the surface of first substrate base plate and/or second substrate base plate to alleviate the problem that the liquid crystal display panel appears the light leak in first light transmission region.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A liquid crystal display panel, comprising: the liquid crystal display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the opposite substrate;
the liquid crystal display panel comprises a first light-transmitting area and a display area surrounding the first light-transmitting area;
in the first light-transmitting area, the array substrate comprises a first substrate, and the opposite substrate comprises a second substrate; the first light transmission area is provided with a first antireflection structure; the first antireflection structure is used for reducing the reflected light of the surface of the first substrate and/or the second substrate; wherein the content of the first and second substances,
the first antireflection structure comprises the first substrate base plate and/or the second substrate base plate, and the thickness of the first substrate base plate and/or the second substrate base plate satisfies the following formula:
wherein d1 represents a thickness of the first substrate base plate and/or the second substrate base plate, n1 represents a refractive index of the first substrate base plate and/or the second substrate base plate, λ represents an incident light wavelength, and k represents a natural number;
or the first antireflection structure comprises at least one first antireflection film layer, the first antireflection film layer is positioned on one side of the first substrate, which is back to the second substrate, and/or the first antireflection film layer is positioned on one side of the first substrate, which faces the second substrate; the thickness of the first antireflection film layer satisfies the following formula:
wherein d2 represents the thickness of the first antireflection film layer, n2 represents the refractive index of the first antireflection film layer, λ represents the wavelength of incident light, and k represents a natural number;
or the first antireflection structure comprises a third antireflection film layer positioned between the first substrate and the second substrate, and the third antireflection film layer and the liquid crystal layer are arranged on the same layer; wherein the content of the first and second substances,
the refractive index n4 of the third antireflection film layer satisfies the following formula:
wherein d4 represents the cell thickness of the liquid crystal display panel, n1 represents the refractive index of the first substrate base plate, n4 represents the refractive index of the third antireflection film layer, λ represents the wavelength of incident light, and k represents a natural number.
2. The liquid crystal display panel according to claim 1, wherein when the first antireflection structure includes the first substrate base plate and/or the second substrate base plate, or the first antireflection structure includes the at least one first antireflection film layer, the first antireflection structure further includes at least one second antireflection film layer on a side of the second substrate base plate facing away from the first substrate base plate, and/or on a side of the second substrate base plate facing toward the first substrate base plate; the thickness of the second antireflection film layer satisfies the following formula:
where d3 denotes the thickness of the second antireflection film layer, n3 denotes the refractive index of the second antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
3. The liquid crystal display panel according to claim 1, wherein a shape of the first light-transmitting area includes: any one or combination of circular, oval or square.
4. A display device comprising the liquid crystal display panel according to any one of claims 1 to 3, and further comprising a backlight source located on a side facing away from a light exit surface of the liquid crystal display panel;
the backlight source comprises a second light-transmitting area, and the orthographic projection of the second light-transmitting area on the substrate at least covers the orthographic projection of the first light-transmitting area on the substrate;
the light-transmitting area is formed by the overlapping part of the orthographic projection of the second light-transmitting area on the substrate and the orthographic projection of the first light-transmitting area on the substrate.
5. The display device according to claim 4, further comprising a protective cover plate on a side of the opposite substrate facing away from the array substrate, wherein a region of the protective cover plate corresponding to the light-transmitting region includes a second anti-reflection structure; the second antireflection structure is used for reducing the reflected light of the surface of the protective cover plate.
6. The display device according to claim 5, wherein the second antireflection structure comprises at least one fourth antireflection film layer, the fourth antireflection film layer is positioned on the side of the protective cover plate facing the opposite substrate, and/or the fourth antireflection film layer is positioned on the side of the protective cover plate facing away from the opposite substrate; wherein the thickness of the fourth antireflection film layer satisfies the following formula:
where d5 denotes the thickness of the fourth antireflection film layer, n5 denotes the refractive index of the fourth antireflection film layer, λ denotes the wavelength of incident light, and k denotes a natural number.
7. The display device according to any one of claims 4 to 6, further comprising: the orthographic projection of the light-transmitting area on the substrate at least covers the orthographic projection of the camera module on the substrate.
8. The display device according to claim 7, wherein the camera module is located on a side of the array substrate facing away from the counter substrate when both the array substrate and the counter substrate are provided with substrate substrates in the light-transmitting region.
9. The display device of claim 7, wherein the camera module is at least partially located within the second light-transmissive region.
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| CN109799641B (en) * | 2019-03-29 | 2021-10-22 | 合肥京东方光电科技有限公司 | Array substrate, preparation method thereof and liquid crystal display panel |
| TWI696911B (en) * | 2019-04-15 | 2020-06-21 | 友達光電股份有限公司 | Display device |
| CN110119182A (en) * | 2019-04-23 | 2019-08-13 | 武汉华星光电技术有限公司 | Display device and terminal |
| CN110265441B (en) * | 2019-06-10 | 2021-09-03 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device thereof |
| CN110806665B (en) | 2019-10-08 | 2021-09-24 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN110992823B (en) * | 2019-11-29 | 2022-03-08 | 昆山工研院新型平板显示技术中心有限公司 | Substrate structure, display device and preparation method of substrate structure |
| CN111146359A (en) * | 2019-12-26 | 2020-05-12 | 武汉天马微电子有限公司 | Flexible display panel, manufacturing method thereof and display device |
| CN111276061B (en) * | 2020-01-21 | 2022-12-13 | 维沃移动通信有限公司 | Pole screen, preparation method of pole screen and electronic equipment |
| CN111402739B (en) * | 2020-03-31 | 2023-03-24 | 云谷（固安）科技有限公司 | Display module and preparation method thereof |
| CN111754876B (en) * | 2020-06-28 | 2022-06-21 | 昆山国显光电有限公司 | Display panel and display device |
| CN113113454A (en) * | 2021-03-26 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113471261B (en) * | 2021-06-28 | 2024-02-20 | 合肥维信诺科技有限公司 | Display panel and preparation method thereof |
| CN114335391B (en) * | 2021-12-30 | 2024-02-02 | 武汉天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN114388711A (en) * | 2022-01-27 | 2022-04-22 | 武汉华星光电半导体显示技术有限公司 | Display module and mobile terminal |
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| JPH0781977A (en) * | 1993-07-29 | 1995-03-28 | Central Glass Co Ltd | Anti-reflection coating and production thereof |
| CN205319159U (en) * | 2016-01-21 | 2016-06-15 | 京东方科技集团股份有限公司 | Display substrates , display panel and display device |
| WO2018112883A1 (en) * | 2016-12-23 | 2018-06-28 | 深圳市柔宇科技有限公司 | Optical lens, camera module and terminal |
| CN107229148B (en) * | 2017-05-05 | 2021-03-09 | Oppo广东移动通信有限公司 | Display screen, display device and mobile terminal |
| CN206725908U (en) * | 2017-05-11 | 2017-12-08 | 信利半导体有限公司 | A kind of liquid crystal panel and OLED |
| CN107315207A (en) * | 2017-07-05 | 2017-11-03 | 业成科技（成都）有限公司 | Increase the face equipment and its manufacture method of camera hole light transmittance |
| CN207264062U (en) * | 2017-09-26 | 2018-04-20 | 昆山龙腾光电有限公司 | Display device |
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