CN112198707B - Display panel and display device - Google Patents
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- CN112198707B CN112198707B CN202011307119.5A CN202011307119A CN112198707B CN 112198707 B CN112198707 B CN 112198707B CN 202011307119 A CN202011307119 A CN 202011307119A CN 112198707 B CN112198707 B CN 112198707B
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- 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
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- 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
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- 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
- G02F1/15—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 an electrochromic effect
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- 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
- G02F1/15—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 an electrochromic effect
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- 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
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- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/38—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using electrochromic devices
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a display panel and a display device, and relates to the technical field of display. The display panel comprises a display area, wherein the display area comprises a first display area and a second display area at least partially surrounding the first display area; the display panel comprises an array layer, a liquid crystal layer and a color film layer, wherein the liquid crystal layer is positioned between the array layer and the color film layer; the display area comprises a first polarizer, and the first display area comprises an electrochromic grating; along the stacking direction of the array layer, the liquid crystal layer and the color film layer, the array layer, the liquid crystal layer and at least part of the color film layer are arranged between the first polarizer and the electrochromic grating. In the first display area, the electrochromic grating is used for replacing the original polarizer in the prior art; when the electrochromic grating is electrified and discolored, the electrochromic grating can be combined with the first polaroid to realize a polarization state, so that the normal display effect of the first display area is ensured; when the electrochromic grating is not electrified, the whole surface of the first display area is in a colorless transparent state, and the light transmission effect of the first display area when the camera under the screen is placed is guaranteed.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development and progress of the society, electronic products of the type of an off-screen camera are more and more favored by manufacturers and users; however, in the prior art, when the scheme of making a video recording under the screen is realized in the display module, the display and the function of making a video recording need to be realized simultaneously through the upper and lower two-layer polaroid, but because the existence of polaroid, the loss that causes to the light penetration rate is bigger, can directly influence the effect of formation of image when making a video recording. Therefore, it is highly desirable to provide a display panel that can improve the light transmittance, improve the imaging effect of the off-screen camera, and ensure the display effect of the electronic product on the basis of implementing the off-screen camera technology.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, so as to solve the problem of poor imaging effect when an electronic product carrying an off-screen camera technology performs image capturing.
In a first aspect, the present application provides a display panel comprising a display area comprising a first display area and a second display area at least partially surrounding the first display area;
the display panel comprises an array layer, a liquid crystal layer and a color film layer, wherein the liquid crystal layer is positioned between the array layer and the color film layer;
the display area comprises a first polarizer, and the first display area comprises an electrochromic grating; along the array layer, the liquid crystal layer and the stacking direction of the color film layer, the array layer, the liquid crystal layer and at least part of the color film layer are arranged between the first polarizer and the electrochromic grating.
In a second aspect, the present application provides a display device comprising the display panel; the electrochromic grating comprises an electrochromic layer and a first electrode layer;
the display device comprises a driving circuit which is electrically connected with the first electrode layer; applying a voltage to the first electrode layer drives the electrochromic layer.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the application provides a display panel and a display device, wherein a first polaroid and an electrochromic grating which correspond to each other are arranged in a first display area surrounded by a second display area, and an array layer, a liquid crystal layer and at least part of a color film layer are arranged between the first polaroid and the electrochromic grating; in the first display area, the electrochromic grating is used for replacing an original polarizer in the existing display panel, and under the condition that the electrochromic grating is electrified to change color, the first polarizer can be combined to realize a polarization state, so that the normal display effect of the first display area is ensured; under the circumstances of electrochromic grating does not go on electric for the whole face of first display area is colorless transparent state, and the printing opacity effect when camera under the screen was placed to the guarantee first display area.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present disclosure;
FIG. 2 is an AA' cross-sectional view of FIG. 1 provided in accordance with an embodiment of the present application;
FIG. 3 is another cross-sectional view AA' of FIG. 1, as provided in accordance with an embodiment of the present application;
FIG. 4 is a detailed view of FIG. 3 according to an embodiment of the present application;
FIG. 5 is a cross-sectional view of yet another AA' of FIG. 1 as provided by an embodiment of the present application;
FIG. 6 is a detailed view of FIG. 5 according to an embodiment of the present application;
FIG. 7 is a cross-sectional view of yet another AA' of FIG. 1 in accordance with an embodiment of the present application;
FIG. 8 is a detailed view of FIG. 7 according to an embodiment of the present application;
fig. 9 is a top view of a first display area of a display panel according to an embodiment of the present application;
fig. 10 is a top view of a first display area of a display panel according to an embodiment of the present disclosure;
fig. 11 is a schematic view of a display device according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Among the prior art, when realizing the scheme of making a video recording under the screen in the display module assembly, need realize the demonstration simultaneously through upper and lower two-layer polaroid and make a video recording the function, but because the existence of polaroid, the loss that causes to the light penetration rate is bigger, can directly influence the effect of formation of image when making a video recording. Therefore, it is highly desirable to provide a display panel that can improve the light transmittance, improve the imaging effect of the off-screen camera, and ensure the display effect of the electronic product on the basis of implementing the off-screen camera technology.
In view of the above, the present invention provides a display panel and a display device, so as to solve the problem of poor imaging effect when an electronic product carrying an off-screen camera technology performs image capturing.
Fig. 1 is a schematic diagram of a display panel provided in an embodiment of the present application, fig. 2 is an AA' cross-sectional diagram of fig. 1 provided in an embodiment of the present application, please refer to fig. 1 and fig. 2, the present application provides a display panel 100, as shown in fig. 1, including a display area, the display area including a first display area 10 and a second display area 20 at least partially surrounding the first display area 10;
as shown in fig. 2, the display panel 100 includes an array layer 11, a liquid crystal layer 12 and a color film layer 13, wherein the liquid crystal layer 12 is located between the array layer 11 and the color film layer 13;
the display area comprises a first polarizer 21, the first display area 10 comprises an electrochromic grating 22; the array layer 11, the liquid crystal layer 12 and at least part of the color film layer 13 are included between the first polarizer 21 and the electrochromic grating 22 along the stacking direction of the array layer 11, the liquid crystal layer 12 and the color film layer 13.
Specifically, fig. 1 shows that the present application provides a display panel 100, which includes a display area, wherein the display area includes a first display area 10 and a second display area 20, and specifically, the second display area 20 at least partially surrounds the first display area 10, for example, the first display area 10 may be located at any position in the center of the second display area 20. In addition, in the application, fig. 1 only illustrates that the first display area 10 is a rectangle, but the application does not limit the specific area and shape of the first display area 10, and a user can adjust the area, shape, position, and the like of the first display area 10 according to actual needs. Fig. 1 only shows a case where the second display area 20 surrounds the first display area 11, and in some other embodiments of the present invention, the second display area 20 may also semi-surround the first display area 10, which is not particularly limited by the present invention.
Fig. 2 shows that the display panel 100 includes an array layer 11, a liquid crystal layer 12, and a color film layer 13, wherein the liquid crystal layer 12 is located between the array layer 11 and the color film layer 13; the entire display area of the display panel 100 includes the first polarizer 21, wherein the first display area 10 further includes the electrochromic grating 22; the array layer 11, the liquid crystal layer 12 and at least a part of the color film layer 13 are included between the first polarizer 21 and the electrochromic grating 22 along the stacking direction of the array layer 11, the liquid crystal layer 12 and the color film layer 13 in the display panel 100. That is, the first polarizer 21 and the electrochromic grating 22 may be respectively disposed on a side of the array layer 11 away from the liquid crystal layer 12 and a side of the color film layer 13 away from the liquid crystal layer 12, or one of the first polarizer 21 and the electrochromic grating 22 may be disposed on a side of the array layer 11 away from the liquid crystal layer 12, and the other may be disposed between two sub-film structures in the middle of the entire color film layer 13.
The present application replaces two opposite polarizers in the prior art by using a combination of the first polarizer 21 and the electrochromic grating 22 in the first display area 10 of the display panel 100; because the electrochromic grating 22 has the effect of changing into black or other dark colors when an electric field is applied, an opaque grating structure can be formed, and the polarization effect in the display panel 100 is realized by combining the first polarizer 21, so that the normal display effect in the first display area 10 is realized; when the electrochromic grating 22 is not applied with an electric field, the electrochromic grating 22 is in a colorless and transparent state, and since the electrochromic grating 22 in the colorless and transparent state has better transmittance compared with the polarizer used in the prior art, the transmittance in the whole first display area 10 can be improved, or the amount of light transmitted in the whole first display area 10 can be improved.
When the display panel 100 is carried with under-screen camera technology, can set up under the screen camera in first display area 10, the luminousness of the first display area 10 that is provided with electrochromic grating 22 is promoted, can improve the formation of image effect of making a video recording under the screen, improves the not good problem of formation of image effect when carrying with the electronic product of under-screen camera technology and making a video recording.
Fig. 3 is another cross-sectional view AA' of fig. 1 provided in an embodiment of the present application, referring to fig. 1 and fig. 3, optionally, along a direction that the array layer 11 points to the color film layer 13, the color film layer 13 includes a color filter layer 131, a light shielding layer 132, and a glass substrate 133 that are sequentially disposed;
the electrochromic grating 22 is disposed between the light shielding layer 132 and the glass substrate 133, and the first polarizer 21 is disposed on a side of the array layer 11 away from the liquid crystal layer 12.
Specifically, in the display panel 100, in a direction along the array layer 11 toward the color film layer 13, the color film layer 13 at least includes a color filter layer 131, a light shielding layer 132 and a glass substrate 133 which are sequentially arranged; that is, the electrochromic grating 22 in the first display area 10 may be selectively disposed between the light shielding layer 132 and the glass substrate 133, and the first polarizer 21 may be selectively disposed on the side of the array layer 11 away from the liquid crystal layer 12.
The corresponding electrochromic grating 22 and the first polarizer 21 are arranged in the first display area 10 of the display panel 100, and whether an electric field is applied to the electrochromic grating 22 or not is selected, so that the normal display effect in the first display area 10 can be realized, and the light transmittance of the first display area 10 can be improved. When the display panel 100 is carried with under-screen camera technology, can set up under the screen camera in first display area 10, the luminousness of the first display area 10 that is provided with electrochromic grating 22 is promoted, can improve the formation of image effect of making a video recording under the screen, improves the not good problem of formation of image effect when carrying with the electronic product of under-screen camera technology and making a video recording.
Furthermore, the electrochromic grating 22 is arranged between the light shielding layer 132 and the glass substrate 133 in the color film layer 13, which is equivalent to arranging the electrochromic grating 22 in the box, so that the electrochromic grating 22 in the box is not affected by the process outside the box, and the structural integrity and stability of the electrochromic grating 22 are ensured; compared with the arrangement mode that the electrochromic grating 22 is arranged outside the box, the thickness of the glass substrate 133 is reduced, the optical path of the liquid crystal can be reduced, and the overall display effect of the display panel 100 is improved.
Referring to fig. 1, fig. 3 and fig. 4, which are detailed views of fig. 3 provided in an embodiment of the present application, optionally, the electrochromic grating 22 includes an electrochromic layer 222 and a first electrode layer 221, and the first electrode layer 221 is disposed between the glass substrate 133 and the electrochromic layer 222.
Specifically, the electrochromic grating 22 includes an electrochromic layer 222 and a first electrode layer 221, and when the electrochromic grating 22 is disposed between the light-shielding layer 132 and the glass substrate 133 in the color film layer 13, the electrochromic grating 22 is specifically disposed in such a manner that the first electrode layer 221 is disposed between the glass substrate 133 and the electrochromic layer 222. That is, the manufacturing process of the electrochromic grating 22 here may be that, on the glass substrate 133 of the color film layer 13, the first electrode layer 221 with a plurality of strip-shaped electrodes regularly arranged is manufactured first, and then the flat layer is deposited, the flat layer fills the gaps between the strip-shaped electrodes in the first electrode layer 221, and then the entire electrochromic layer 222 is coated/deposited on the side of the first electrode layer 221 away from the glass substrate 133, and then the entire electrochromic layer 222 is etched according to the arrangement of the strip-shaped electrodes in the first electrode layer 221 to form the grating; at this time, the orthographic projection of the grating-shaped electrochromic layer 222 on the glass substrate 133 and the orthographic projection of the strip-shaped electrodes in the first electrode layer 221 on the glass substrate 133 are completely overlapped; then, the light-shielding layer 132, the color filter layer 131, the organic planarization layer, and the support layer in the color film layer 13 are sequentially formed.
In the fabrication of the first electrode layer 221, the electrode layer may be fabricated on the entire surface of the glass substrate 133, and the first electrode layer 221 having a plurality of stripe electrodes may be formed by etching.
Fig. 5 is a cross-sectional view of another AA' of fig. 1 provided in an embodiment of the present application, referring to fig. 1 and fig. 5, optionally, along a direction in which the array layer 11 points to the color film layer 13, the color film layer 13 includes a color filter layer 131, a light shielding layer 132, and a glass substrate 133, which are sequentially disposed;
the electrochromic grating 22 is disposed on a side of the glass substrate 133 away from the array layer 11, and the first polarizer 21 is disposed on a side of the array layer 11 away from the liquid crystal layer 12.
Specifically, in the display panel 100, in a direction along the array layer 11 toward the color film layer 13, the color film layer 13 at least includes a color filter layer 131, a light shielding layer 132 and a glass substrate 133 which are sequentially arranged; the electrochromic grating 22 in the first display area 10 may be selectively disposed on a side of the glass substrate 133 away from the array layer 11, that is, the electrochromic grating 22 is disposed outside the cell, and the first polarizer 21 may be selectively disposed on a side of the array layer 11 away from the liquid crystal layer 12.
According to the display panel, the electrochromic grating 22 and the first polarizer 21 which are opposite to each other are arranged in the first display area 10 of the display panel 100, and whether an electric field is applied to the electrochromic grating 22 or not is selected, so that the normal display effect in the first display area 10 can be realized, and the light transmittance of the first display area 10 can be improved. When the display panel 100 is carried with under-screen camera technology, can set up under the screen camera in first display area 10, the luminousness of the first display area 10 that is provided with electrochromic grating 22 is promoted, can improve the formation of image effect of making a video recording under the screen, improves the not good problem of formation of image effect when carrying with the electronic product of under-screen camera technology and making a video recording.
Referring to fig. 1, fig. 5 and fig. 6, the electrochromic grating 22 optionally includes an electrochromic layer 222 and a first electrode layer 221, and the first electrode layer 221 is disposed between the glass substrate 133 and the electrochromic layer 222.
Specifically, the electrochromic grating 22 includes an electrochromic layer 222 and a first electrode layer 221, and when the electrochromic grating 22 is disposed on the side of the color film layer 13 away from the array layer 11, the first electrode layer 221 may be optionally disposed between the glass substrate 133 and the electrochromic layer 222.
In the present application, the electrochromic grating 22 is disposed on one side of the glass substrate 133 of the color film layer 13, which is far away from the array layer 11, which is equivalent to disposing the electrochromic grating 22 outside the box, in general, a conductive ITO (Indium tin oxide ) is plated on one side of the color film layer 13, which is far away from the array layer 11, for dispersing static electricity generated by the color film layer 13, and the back side ITO can be combined together when the conductive ITO is plated on one side of the color film layer 13, which is far away from the array layer 11; that is, when the transparency effect is not required, ITO is used for static electricity conduction, and when the transparency effect is required, ITO is electrified as the first electrode layer 221 to control the color-changing material used in the electrochromic layer 222. When the display panel 100 is applied to a display device corresponding to the display panel, the display panel may be specifically controlled by an IC (Integrated Circuit Chip)/FPC (Flexible Printed Circuit).
Fig. 7 is a cross-sectional view of another AA' of fig. 1 provided in an embodiment of the present application, referring to fig. 1 and fig. 7, optionally, along a direction in which the array layer 11 points to the color film layer 13, the color film layer 13 includes a color filter layer 131, a light shielding layer 132, and a glass substrate 133, which are sequentially disposed;
the electrochromic grating 22 is disposed on a side of the array layer 11 away from the liquid crystal layer 12, and the first polarizer 21 is disposed on a side of the glass substrate 133 away from the array layer 11.
Specifically, in the display panel 100, in a direction along the array layer 11 toward the color film layer 13, the color film layer 13 at least includes a color filter layer 131, a light shielding layer 132 and a glass substrate 133 which are sequentially arranged; the electrochromic grating 22 in the first display area 10 may be selectively disposed on a side of the array layer 11 away from the liquid crystal layer 12, and the first polarizer 21 may be selectively disposed on a side of the glass substrate 133 away from the array layer 11, that is, the first polarizer 21 is disposed on a side of the color film layer 13 away from the array layer 11.
According to the display panel, the electrochromic grating 22 and the first polarizer 21 which are opposite to each other are arranged in the first display area 10 of the display panel 100, and whether an electric field is applied to the electrochromic grating 22 or not is selected, so that a normal display effect in the first display area 10 can be realized, and the light transmittance of the first display area 10 can be improved. When the display panel 100 is carried with under-screen camera technology, can set up under the screen camera in first display area 10, the luminousness of the first display area 10 that is provided with electrochromic grating 22 is promoted, can improve the formation of image effect of making a video recording under the screen, improves the not good problem of formation of image effect when carrying with the electronic product of under-screen camera technology and making a video recording.
Fig. 8 is a detailed view of fig. 7 according to an embodiment of the present disclosure, please refer to fig. 1, fig. 7 and fig. 8, and optionally, the electrochromic grating 22 includes an electrochromic layer 222 and a first electrode layer 221, and the first electrode layer 221 is disposed between the array layer 11 and the electrochromic layer 222.
Specifically, when the electrochromic grating 22 includes the electrochromic layer 222 and the first electrode layer 221, when the electrochromic grating 22 is disposed on the side of the array layer 11 away from the liquid crystal layer 12, since the array layer 11 generally includes the substrate, and the substrate is located on the side of the array layer 11 farthest from the liquid crystal layer 12, the first electrode layer 221 may be disposed between the substrate of the array layer 11 and the electrochromic layer 222.
This application sets up electrochromic grating 22 in one side that liquid crystal layer 12 was kept away from to array layer 11, compares in setting up electrochromic grating 22 in the setting mode that liquid crystal layer 12 one side was kept away from to various rete 13, and electrochromic grating 22's outside does not have processes such as extra laminating cover plate glass, can reduce the influence of extra process to electrochromic grating 22.
Here, the manufacturing process of the electrochromic grating 22 may be that, on the substrate of the array layer 11, the first electrode layer 221 with a plurality of strip electrodes regularly arranged is manufactured, and then a flat layer is deposited, the flat layer fills the gaps between the strip electrodes in the first electrode layer 221, and then the whole electrochromic layer 222 is coated/deposited on one side of the first electrode layer 221 away from the substrate, and then the whole electrochromic layer 222 is etched according to the arrangement of the strip electrodes in the first electrode layer 221 to form the grating; at this time, the orthographic projection of the grating-shaped electrochromic layer 222 on the base substrate and the orthographic projection of the stripe-shaped first electrode layer 221 on the base substrate completely overlap.
The first electrode layer 221 includes a plurality of strip-shaped electrodes, or the first electrode layer 221 including a plurality of strip-shaped electrodes may be formed by etching after the electrode layer is formed on the entire surface of the substrate.
Referring to fig. 1, fig. 3 to fig. 8, optionally, the second display area 20 includes a second polarizer 23, and the orthographic projection of the second polarizer 23 and the electrochromic grating 22 on the light-emitting surface of the display panel 100 coincides with the orthographic projection of the first polarizer 21 on the light-emitting surface of the display panel 100.
Specifically, the second display area 20 of the display panel 100 further includes a second polarizer 23, and the second polarizer 23 combines with the first polarizer 21 in the second display area 20 to implement polarization; at this time, the orthographic projection of the second polarizer 23 and the electrochromic grating 22 on the light-emitting surface of the display panel 100 and the orthographic projection of the first polarizer 21 on the light-emitting surface of the display panel 100 are in a superposed state, so that the first polarizer 21 and the second polarizer 23, or the first polarizer 21 and the electrochromic grating 22, which are correspondingly arranged in the first display area 10 and the second display area 20 of the whole display panel 100, can be ensured, thereby ensuring that the display effect of the whole display panel 100 is complete.
It should be noted that the first polarizer 21 in fig. 3-8 is shown in a full-face shape, wherein, for example, fig. 3 and 4 show a case where the second polarizer 23 is disposed in a case, and the second polarizer and the electrochromic grating 22 are disposed in the same layer; for example, fig. 5-8 show a case where the second polarizer 23 is disposed outside the cell, and the second polarizer and the electrochromic grating 22 are also disposed in the same layer.
It should be noted that, the present application does not limit that the second polarizer 23 and the electrochromic grating 22 in the display panel 100 need to be disposed on the same layer, that is, the shortest distance between the second polarizer 23 and the first polarizer 21 may be different from the shortest distance between the electrochromic grating 22 and the first polarizer 21, as long as the first polarizer 21 and the second polarizer 23, or the first polarizer 21 and the electrochromic grating 22, which are disposed correspondingly, are ensured to be able to realize the display of the normal picture of the entire display panel 100, and the light transmittance of the first display area 10 is improved. Alternatively, it is preferable that the electrochromic grating 22 is disposed in the box, and the second polarizer 23 is disposed outside the box, so that the light transmittance of the first display area 10 can be improved, and the cost of manufacturing the display panel 100 can be reduced to some extent.
Fig. 9 is a top view of a first display area of a display panel provided in an embodiment of the present disclosure, and fig. 10 is another top view of the first display area of the display panel provided in the embodiment of the present disclosure, please refer to fig. 1, 9 and 10, alternatively, the display panel 100 includes a plurality of sub-pixels 30 arranged along a row direction and a column direction;
on the light emitting surface of the display panel 100, the extending direction of the electrochromic grating 22 is parallel to the column direction; or the like, or a combination thereof,
the direction of extension of the electrochromic grating 22 intersects the column direction.
Specifically, the display panel 100 includes a plurality of sub-pixels 30 arranged along a row direction and a column direction, and on a light-emitting surface of the display panel 100, an extending direction of the electrochromic grating 22 may be set to be parallel to the column direction, or the extending direction of the electrochromic grating 22 may be set to intersect with the column direction; however, it is necessary to ensure that the absorption axis of the first polarizer 21 is 90 ° to the extending direction of the electrochromic grating 22, that is, the absorption axis of the first polarizer 21 is perpendicular to the extending direction of the electrochromic grating 22. For example, the absorption axis of the first polarizer 21 is 0 °, the arrangement of the electrochromic grating 22 is 90 °; for example, the absorption axis of the first polarizer 21 is 135 °, the arrangement of the electrochromic grating 22 is 225 °; the absorption axis of the first polarizer 21 and the extending direction of the electrochromic grating 22 are always controlled to be 90 °, so that the normal display effect of the display panel 100 can be ensured.
Since the electrochromic grating 22 needs to realize the function of a polarizer, the line width of the electrochromic grating 22 may be set to be less than 400nm according to the visible wavelength range of 400nm to 700 nm. The number of the strips of the electrochromic grating 22 is related to the area of the first display area 10, and can be adjusted according to the area size of the first display area 10. The extending direction of the electrochromic grating 22 can be adjusted according to the difference of the absorption axis of the first polarizer 21.
Optionally, the electrochromic layer 222 is made of IrO2, WO3, moO3, nb2O5, or TiO2.
Specifically, the electrochromic layer 222 may be made of one selected from iridium oxide (IrO 2), tungsten trioxide (WO 3), molybdenum trioxide (MoO 3), niobium pentoxide (Nb 2O 5), and titanium dioxide (TiO 2). The electrochromic is a phenomenon that the optical properties (reflectivity, transmittance, absorptivity and the like) of the material generate stable and reversible color change under the action of an external electric field, and the material is represented as reversible change of color and transparency in appearance; that is, a material having electrochromic properties is called an electrochromic material. It should be noted that the present application is not limited thereto, and only some materials that can be used for the electrochromic layer 222 are provided herein. Among them, iridium oxide (IrO 2) may be preferably used for the electrochromic layer 222.
Fig. 11 is a schematic view of a display device according to an embodiment of the present application, please refer to fig. 1 to 11, and based on the same inventive concept, the present application further provides a display device 200, in which the display device 200 includes a display panel 100; the electrochromic grating 22 includes an electrochromic layer 222 and a first electrode layer 221;
the display device 200 includes a driving circuit electrically connected to the first electrode layer 221; applying a voltage to the first electrode layer 221 drives the electrochromic layer 222.
Specifically, based on the same inventive concept, the present application also provides a display device 200, the display device 200 including the display panel 100. The electrochromic gratings 22 in the display panel 100 each include at least an electrochromic layer 222 and a first electrode layer 221, wherein an electric field formed by energizing the first electrode layer 221 is used for driving the electrochromic layer 222 to perform color conversion. The method comprises the following specific steps: alternatively, the driving circuit does not apply a voltage to the first electrode layer 221, and the electrochromic layer 222 is in a transparent state; the driving circuit applies a voltage to the first electrode layer 221, and the electrochromic layer 222 appears black or blue. That is, when a voltage is not applied to the first electrode layer 221, the electrochromic layer 222 is in a colorless transparent state, and when the first electrode layer 221 is energized to form an electric field, the electrochromic layer 222 is turned into black to form an opaque grating, thereby functioning as a polarizer.
According to the structure based on the nano grating and the electrochromic, a dynamic switching nano diffraction grating and a transparent effect can be formed, the scheme of freely switching between polarized light and high transmittance is synchronously realized, and the scheme of shooting and displaying under a screen is further favorably realized. That is, the present application provides the display device 200, in which at least a partial region (the first display region 10 described above) can achieve both the normal display effect and the improvement of the under-screen image pickup imaging effect.
It should be noted that, for the embodiments of the display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the display panel 100, and repeated descriptions are omitted. The display device 200 provided by the present application may be: any product and component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a vehicle-mounted display screen, a navigator and the like.
By the embodiment, the display panel and the display device at least achieve the following beneficial effects:
in the display panel and the display device provided by the application, the first polarizer and the electrochromic grating are arranged in the first display area surrounded by the second display area correspondingly, wherein an array layer, a liquid crystal layer and at least part of color film layer are arranged between the first polarizer and the electrochromic grating; in the first display area, the electrochromic grating is used for replacing an original polaroid in the existing display panel, and under the condition that the electrochromic grating is electrified and discolored, the first polaroid can be combined to realize a polarization state, so that the normal display effect of the first display area is ensured; under the circumstances of electrochromic grating does not go on electric for the whole face of first display area is colorless transparent state, and the printing opacity effect when camera under the screen was placed to the guarantee first display area.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A display panel comprising a display area, the display area comprising a first display area and a second display area at least partially surrounding the first display area;
the display panel comprises an array layer, a liquid crystal layer and a color film layer, wherein the liquid crystal layer is positioned between the array layer and the color film layer;
the display area comprises a first polarizer, and the first display area comprises an electrochromic grating; the array layer, the liquid crystal layer and at least part of the color film layer are arranged between the first polarizer and the electrochromic grating along the stacking direction of the array layer, the liquid crystal layer and the color film layer;
the color film layer comprises a color filter layer, a shading layer and a glass substrate which are sequentially arranged along the direction of the array layer pointing to the color film layer;
the setting mode of the electrochromic grating is as follows:
the electrochromic grating is arranged between the light shielding layer and the glass substrate, and the first polarizer is arranged on one side of the array layer, which is far away from the liquid crystal layer; or the like, or a combination thereof,
the electrochromic grating is arranged on one side of the glass substrate, which is far away from the array layer, and the first polarizer is arranged on one side of the array layer, which is far away from the liquid crystal layer;
the display panel further comprises a camera under the screen, the camera under the screen is located in the first display area, and when the camera under the screen is in a working state, the electrochromic grating is in a colorless transparent state.
2. The display panel according to claim 1, wherein the electrochromic grating comprises an electrochromic layer and a first electrode layer, the first electrode layer being disposed between the glass substrate and the electrochromic layer.
3. The display panel of claim 1, wherein the electrochromic grating comprises an electrochromic layer and a first electrode layer, the first electrode layer being disposed between the glass substrate and the electrochromic layer.
4. The display panel according to claim 1, wherein the color film layer comprises a color filter layer, a light shielding layer and a glass substrate arranged in sequence along a direction in which the array layer points to the color film layer;
the electrochromic grating is arranged on one side, away from the liquid crystal layer, of the array layer, and the first polarizer is arranged on one side, away from the array layer, of the glass substrate.
5. The display panel of claim 4, wherein the electrochromic grating comprises an electrochromic layer and a first electrode layer, the first electrode layer being disposed between the array layer and the electrochromic layer.
6. The display panel of claim 1, wherein the second display area comprises a second polarizer, and the orthographic projection of the second polarizer and the electrochromic grating on the light-emitting surface of the display panel coincides with the orthographic projection of the first polarizer on the light-emitting surface of the display panel.
7. The display panel according to claim 1, wherein the display panel comprises a plurality of sub-pixels arranged in a row direction and a column direction;
on the light-emitting surface of the display panel, the extending direction of the electrochromic grating is parallel to the column direction; or the like, or a combination thereof,
the extending direction of the electrochromic grating intersects with the column direction.
8. The display panel according to claim 2, 3 or 5, wherein the electrochromic layer is made of IrO 2 、WO 3 、MoO 3 、Nb 2 O 5 Or TiO 2 。
9. A display device characterized in that the display device comprises the display panel according to any one of claims 1 to 8; the electrochromic grating comprises an electrochromic layer and a first electrode layer;
the display device comprises a driving circuit which is electrically connected with the first electrode layer; applying a voltage to the first electrode layer drives the electrochromic layer.
10. The display device according to claim 9,
the driving circuit does not apply voltage to the first electrode layer, and the electrochromic layer is in a transparent state;
the driving circuit applies voltage to the first electrode layer, and the electrochromic layer is black or blue.
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| CN115224089A (en) * | 2022-06-21 | 2022-10-21 | 合肥维信诺科技有限公司 | A display panel and display device |
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| CN105278199A (en) * | 2015-11-17 | 2016-01-27 | 深圳市华星光电技术有限公司 | Electrochromic display panel and manufacture method thereof |
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