CN111145658A - Cover plate, manufacturing method thereof, display panel and electronic equipment - Google Patents
Cover plate, manufacturing method thereof, display panel and electronic equipment Download PDFInfo
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- CN111145658A CN111145658A CN201911407553.8A CN201911407553A CN111145658A CN 111145658 A CN111145658 A CN 111145658A CN 201911407553 A CN201911407553 A CN 201911407553A CN 111145658 A CN111145658 A CN 111145658A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention provides a cover plate, a manufacturing method, a display panel and electronic equipment, wherein the refractive indexes of a side display area cover plate in the cover plate are sequentially reduced in the direction from the inner side of the side display area cover plate to the outer side of the side display area cover plate, the minimum refractive index is larger than that of air, and further a light propagation path passing through the side display area cover plate is changed, so that the changed light propagation path is inclined to the direction vertical to the front display area cover plate, a good visual angle is obtained, and the display effect is improved.
Description
Technical Field
The invention relates to the technical field of OLED display, in particular to a cover plate, a manufacturing method of the cover plate, a display panel and electronic equipment.
Background
Organic Light-Emitting diodes (OLEDs), also known as Organic electroluminescent displays and Organic Light-Emitting semiconductors, have the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, fast response speed, and the like, and are widely used in the display fields of mobile phones, digital video cameras, DVD players, notebook computers, televisions, and the like.
Compared with a conventional Liquid Crystal Display (LCD), the OLED display panel can realize flexible display, so that a highly portable and bendable display technology becomes a significant breakthrough in the field.
However, in order to increase the screen occupation ratio, the side frame region of the display screen is provided in a flexible curved shape. Then, when the front display area of the display screen is normally observed, the display brightness of the side frame area of the display screen is sharply reduced, the visual angle of the display screen is poor, the display stereoscopic impression is insufficient, and the display effect of the display screen is further influenced.
Disclosure of Invention
In view of the above, to solve the above problems, the present invention provides a cover plate, a method for manufacturing the cover plate, a display panel and an electronic device, and the technical solution is as follows:
a cover plate, the cover plate comprising: the display device comprises a front display area cover plate and a side display area cover plate which is adjacently arranged on at least one side of the front display area cover plate, wherein the side display area cover plate and the front display area cover plate are not on the same horizontal plane;
the side display area cover comprises at least one layer of sub-cover in a first direction,
the first direction is a direction in which the inner side of the side display area cover plate points to the outer side of the side display area cover plate; the side of the side display area cover plate, which forms an included angle with the front display area cover plate, is the inner side, and the side, which is separated from the inner side through the side display area cover plate, is the outer side;
the refractive index of at least one layer of the sub cover plates in the first direction is reduced in sequence, and the minimum refractive index is larger than that of air.
Optionally, in the cover plate, the side display region cover plate includes a sub-cover plate in the first direction, and the sub-cover plate includes a plurality of virtual film layers;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
Optionally, in the cover plate, the side display region cover plate includes a plurality of sub-cover plates stacked in sequence in the first direction.
Optionally, in the cover plate, each of the sub-cover plates includes a plurality of virtual film layers;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
Optionally, in the cover plate, each of the dummy film layers contains a first ion and a second ion;
wherein the content of the first ions in the plurality of dummy film layers is gradually increased in the first direction, and the content of the second ions in the plurality of dummy film layers is gradually decreased in the first direction;
the ionic radius of the first ion is greater than the ionic radius of the second ion.
Optionally, in the cover plate, at least one layer of the sub-cover plates has a maximum value of refractive index n in the first direction0The incident angle of light incident on the cover plate is theta1Then n is0＜1/sinθ1。
Optionally, in the cover plate, an acute angle formed by the planes of the side display area cover plate and the front display area cover plate is β, so n is0≤sinβ/sinθ1。
A method of making a cover plate, the method comprising:
providing a cover plate to be processed, wherein the cover plate to be processed comprises: the display device comprises a front display area cover plate and a side display area cover plate which is adjacently arranged on at least one side of the front display area cover plate, wherein the side display area cover plate and the front display area cover plate are not on the same horizontal plane;
processing the side display area cover plate so that the refractive indexes of the side display area cover plate in a first direction are sequentially reduced, and the minimum refractive index is larger than that of air; the side of the included angle formed by the side display area cover plate and the front display area cover plate is the inner side, and the side separated from the inner side by the side display area cover plate is the outer side.
Optionally, in the above manufacturing method, when the side display region cover plate is a sub-cover plate,
carrying out ion exchange on the sub-cover plate to form a multilayer virtual film layer;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
Optionally, in the above manufacturing method, when the side display region cover plate is a plurality of sub-cover plates stacked in sequence,
carrying out ion exchange on each layer of the sub-cover plate, wherein each layer of the sub-cover plate forms a plurality of virtual film layers;
carrying out laminating treatment on the plurality of layers of sub-cover plates;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
A display panel comprising the cover plate of any one of the above.
Optionally, in the display panel, the display panel includes a front display area and a side display area;
wherein the front display area and the front display area cover plate are superposed along the orthographic projection of a first visual angle;
the side display area and the side display area cover plate are superposed along the orthographic projection of the second visual angle.
An electronic device comprising the display panel of any of the above.
Compared with the prior art, the invention has the following beneficial effects:
in the cover plate provided by the invention, the refractive indexes of the side display area cover plate are sequentially reduced in the direction from the inner side of the side display area cover plate to the outer side of the side display area cover plate, and the minimum refractive index is greater than that of air, so that the light propagation path passing through the side display area cover plate is changed, the changed light propagation path is inclined towards the direction vertical to the front display area cover plate, a good visual angle is obtained, and the display effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cover plate according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a light propagation path of a conventional cover plate;
FIG. 3 is a schematic diagram of a light propagation path of a cover plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cover plate according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another cover plate according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a sub-cover plate according to an embodiment of the present invention;
fig. 7 is a schematic diagram of light path refraction of a cover plate according to an embodiment of the present invention;
fig. 8 is a schematic flow chart illustrating a method for manufacturing a cover plate according to an embodiment of the present invention;
FIG. 9 is a schematic illustration of an ion exchange provided by an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a cover plate according to an embodiment of the present invention.
The cover plate includes: the display device comprises a positive display area cover plate BC and side display area cover plates AB and CD which are adjacently arranged on at least one side of the positive display area cover plate BC, wherein the side display area cover plates AB and CD and the positive display area cover plate BC are not on the same horizontal plane;
the side display area cover AB is exemplified below, and the CD segment side display area cover is the same as the AB segment.
The side display area cover AB comprises at least one layer of sub-covers in a first direction,
the first direction is a direction in which the inner side of the side display area cover plate AB points to the outer side of the side display area cover plate AB; the side of the side display area cover plate AB, which forms an included angle with the front display area cover plate BC, is the inner side, and the side which is separated from the inner side through the side display area cover plate AB is the outer side;
the refractive index of at least one layer of the sub cover plates in the first direction is reduced in sequence, and the minimum refractive index is larger than that of air.
In fig. 1, the side display area cover AB is illustrated as including a layer of sub-covers.
In this embodiment, referring to fig. 2, fig. 2 is a schematic diagram of a light propagation path of a conventional cover plate, when the refractive index of the cover plate in the first direction is the same, light passing through the cover plate is not refracted inside the cover plate, that is, the light propagates inside the cover plate along a straight line to a contact surface between the cover plate and air, and light refraction occurring when the light exits from the cover plate to the air is negligible, so that the light passing through the cover plate enters the air along a nearly straight line.
Therefore, most of light rays can not be directly emitted to human eyes, when the front display area cover plate is normally observed, the display brightness of the side display area cover plate can be sharply reduced, the visual angle is poor, the display stereoscopic impression is insufficient, and the integral display effect is further influenced.
Referring to fig. 3, fig. 3 is a schematic view illustrating a light propagation path of a cover plate according to an embodiment of the present invention.
In the embodiment of the invention, the refractive indexes of the side display area cover plates AB are sequentially reduced in the direction from the inner sides of the side display area cover plates AB to the outer sides of the side display area cover plates AB, and the minimum refractive index is greater than that of air, so that the light propagation paths passing through the side display area cover plates AB are changed, that is, the light rays are refracted for multiple times in the cover plates, so that the changed light propagation paths are inclined in the direction perpendicular to the front display area cover plate BC, a good viewing angle is obtained, and the display effect is improved.
Further, based on the above embodiment of the present invention, referring to fig. 4, fig. 4 is a schematic diagram of a specific structure of a cover plate according to an embodiment of the present invention.
The side display area cover plate AB comprises a layer of sub-cover plate in the first direction, and the layer of sub-cover plate comprises a plurality of layers of virtual film layers A1、A2、A3、…、An；
The refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
In this embodiment, the side display area cover plate AB includes a layer of sub-cover plates in the first direction, which means that the side display area cover plate AB is of a unitary structure, i.e., a one-piece cover plate structure.
Specifically, a layer of the sub-cover plate including, but not limited to, ion-exchange is formed to have a refractive index gradually decreasing in a first directionThe sub-cover plate structure of (1) can be further divided into a plurality of virtual film layers according to the ion concentration change of a certain ion, for example, in the first direction, a film layer with the ion concentration range of 1% -1.1% of a certain ion is defined as a first virtual film layer A11.1% -1.2% is defined as the second virtual film layer A2Up to the nth virtual film layer An。
The refractive index of the first dummy film layer is in a range, for example, (n) considering that the refractive index varies depending on the ion concentration1-a)～(n1+ a), then each layer of virtual film is compromised in order to better define its refractive index, e.g., the first layer of virtual film a1Has a refractive index of n1The second virtual film layer A2Has a refractive index of n2The n-th virtual film layer AnHas a refractive index of nn。
Wherein, the ion exchange concentration of the n-th virtual film layer is greater compared with that of the n-1 st virtual film layer, namely n1＞n2＞n3＞…＞nn＞noutWherein n isoutIs the refractive index of air.
That is, in the embodiment of the present invention, a whole glass is processed to form a cover plate with an integral structure in which the refractive index gradually decreases from inside to outside, so as to change the light propagation path passing through the cover plate of the side display region, that is, light is refracted multiple times inside the cover plate, so that the changed light propagation path is inclined in a direction perpendicular to the cover plate of the front display region, thereby obtaining a good viewing angle and further improving the display effect.
Further, based on the above-mentioned embodiment of the present invention, referring to fig. 5, fig. 5 is a schematic diagram of a specific structure of another cover plate provided in the embodiment of the present invention.
The side display area cover plate AB includes a plurality of sub-cover plates sequentially stacked in the first direction.
In this embodiment, the side display area cover AB is formed by attaching a plurality of independent sub-covers in a first direction.
It should be noted that the number of the sub-cover plates is not limited in the embodiment of the present invention, and may be determined according to actual requirements, in the embodiment of the present invention, five sub-cover plates are taken as an example, and are illustrated as a first-layer sub-cover plate 11, a second-layer sub-cover plate 12, a third-layer sub-cover plate 13, a fourth-layer sub-cover plate 14, and a fifth-layer sub-cover plate 15.
For example, when a thicker finished cover plate is required, a larger number of sub-cover plates can be adopted for bonding; when a thinner finished cover plate is required, a smaller number of sub-cover plates can be adopted for lamination.
Further, based on the above embodiment of the present invention, referring to fig. 6, fig. 6 is a schematic structural diagram of a sub-cover plate according to an embodiment of the present invention.
Each layer of the sub-cover plate comprises a plurality of virtual film layers;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
In this embodiment, as shown in fig. 6, when the number of the sub-lids is two, the sub-lid on the side close to the air is defined as the outside sub-lid 17, and the lid on the side far from the air is defined as the inside sub-lid 16.
Wherein the outer subshell plate 17 and the inner subshell plate 16 both comprise a plurality of virtual film layers, a1、A2、A3、…、AnThe refractive index of the multilayer virtual film layer of the outer subshell plate 17 in the first direction is gradually reduced, and the minimum refractive index is greater than that of air; the refractive index of the inner subsheet 16 in the first direction also decreases gradually, however, the minimum refractive index N of the inner subsheet 16nNot less than the maximum refractive index n of the outer subshell plate 171。
In addition, the number of the dummy layers included in the outer subsheet 17 and the inner subsheet 16 may be the same or different.
Further, according to the above embodiment of the present invention, each of the dummy film layers contains a first ion and a second ion;
wherein the content of the first ions in the plurality of dummy film layers is gradually increased in the first direction, and the content of the second ions in the plurality of dummy film layers is gradually decreased in the first direction;
the ionic radius of the first ion is greater than the ionic radius of the second ion.
In this embodiment, the first ions are sodium ions and the second ions are lithium ions; or, the first ions are silver ions, and the second ions are sodium ions.
The ionic radius of the first ions is larger than that of the second ions, and the cover plate is made to form the cover plate with the gradually changed refractive index by changing the content ratio of the first ions to the second ions.
Specifically, the refractive index of glass is related to the molecular volume, where the refractive index is inversely proportional to the molecular volume and the molecular volume is proportional to the ionic radius.
When sodium ions are used to exchange lithium ions, the radius of the lithium ions is particularly small, which fills the voids between the glass networks, and the radius of the sodium ions is larger, i.e., the molecular volume thereof is larger, that is, the volume of the sodium ions is larger than the voids between the glass networks, then, after the sodium ions and the lithium ions are exchanged, the sodium ions expand the glass network structure, the increase in the molecular volume of the glass exceeds the increase in the polarizability, that is, the ions exchange the ions with the larger radius, resulting in the molecular volume occupying the dominant role, and therefore, the increase in the molecular volume results in the decrease in the refractive index.
In the side display area cover plate AB, the concentration of ion exchange gradually increases in the direction from the inner side toward the outer side, and the more sodium ions are exchanged, the more the molecular volume is dominant, thus resulting in a gradual decrease in refractive index.
Further, based on the above embodiments of the present invention, referring to fig. 7, fig. 7 is a schematic diagram of light path refraction of a cover plate according to an embodiment of the present invention.
At least one layer of the sub-cover plate is arranged in the first directionMaximum value of refractive index n0The incident angle of light incident on the cover plate is theta1Then n is0＜1/sinθ1。
In this embodiment, the bend angle of the side display region cover plate AB with respect to the horizontal direction is β, and the maximum value of the refractive index of the graded index cover plate is n0I.e. the refractive index at the surface of the inner side of the side display area cover plate AB is n0，
Obtained from the law of refraction, n0*sin(θ1)＝n1*sin(θ2)＝n2*sin(θ3)＝...＝nout*sin(αout)；
Wherein, theta1The incident angle of light incident to the first virtual film layer;
θ2the incident angle of light incident to the second virtual film layer;
θ3the incident angle of light incident to the third virtual film layer;
noutis the refractive index of air, and has a value of 1;
αoutexit angle for side display area cover plate to air, wherein αout∈(0,π/2)。
In order to prevent the final light from being totally reflected inside the side display area cover plate, the following requirements are satisfied:
n0*sin(θ1)＝sin(αout)＜1；
further, it is possible to obtain:
n0＜1/sinθ1。
through the constraint condition more than setting up, can guarantee that light can not take place the total reflection in the apron, light all can be emergent to the air, can not cause the problem of light loss.
Further, according to the above embodiment of the present invention, when the acute angle formed by the planes of the side display area cover and the front display area cover is β, n is0≤sinβ/sinθ1。
In this embodiment, α would need to be made for better light exit angleoutβ, wherein β epsilon (0, pi/2);
that is, n0*sin(θ1)＝sin(αout)≤sin(β)；
Finishing to obtain: n is0≤sinβ/sinθ1。
Through further setting up above constraint condition, guarantee that the light through the apron inclines to the direction of the positive display area apron of perpendicular to as far as to obtain good visual angle, and then improve the display effect.
Further, based on all the above embodiments of the present invention, in another embodiment of the present invention, a method for manufacturing a cover plate is further provided, referring to fig. 8, and fig. 8 is a schematic flow chart of the method for manufacturing a cover plate according to the embodiment of the present invention.
The manufacturing method comprises the following steps:
s101: providing a cover plate to be processed, wherein the cover plate to be processed comprises: the display device comprises a front display area cover plate and a side display area cover plate which is adjacently arranged on at least one side of the front display area cover plate, wherein the side display area cover plate and the front display area cover plate are not on the same horizontal plane;
s102: processing the side display area cover plate so that the refractive indexes of the side display area cover plate in a first direction are sequentially reduced, and the minimum refractive index is larger than that of air; the side of the included angle formed by the side display area cover plate and the front display area cover plate is the inner side, and the side separated from the inner side by the side display area cover plate is the outer side.
In this embodiment, the side display region cover plate is processed to sequentially reduce the refractive index of the side display region cover plate in a direction from the inner side of the side display region cover plate to the outer side of the side display region cover plate, and the minimum refractive index is greater than the refractive index of air, so as to change the light propagation path passing through the side display region cover plate, that is, the light is refracted multiple times inside the cover plate, so that the changed light propagation path is inclined in a direction perpendicular to the direction of the front display region cover plate, thereby obtaining a good viewing angle and further improving the display effect.
Further, referring to fig. 9 based on the above embodiment of the present invention, fig. 9 is a schematic diagram of an ion exchange provided by the embodiment of the present invention.
When the side display area cover plate AB is a layer of sub-cover plate,
carrying out ion exchange on the sub-cover plate to form a multilayer virtual film layer;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
In this embodiment, mask masking is first applied to the sides and bottom of the cover plate and ion exchange is performed on the front side of the cover plate.
For example, a cover plate of lithium magnesium silicate glass or lithium magnesium aluminum glass is placed in 95% (wt) NaCO at a suitable temperature3-5％(wt)Na2SO4In the salt bath, sodium ions and lithium ions are exchanged within a set time according to the requirement of the refractive index so as to form a cover plate structure with the gradually changed refractive index.
Or, the sodium-aluminum-silicon glass is taken as a cover plate and is put into an AgCl salt bath with the adaptive temperature, and the exchange of silver ions and sodium ions is carried out within a set time according to the requirement of the refractive index, so as to form a cover plate structure with the gradually changed refractive index.
Further, according to the above-mentioned embodiment of the present invention, when the side display region cover plate is a plurality of sub-cover plates stacked in sequence,
carrying out ion exchange on each layer of the sub-cover plate, wherein each layer of the sub-cover plate forms a plurality of virtual film layers;
carrying out laminating treatment on the plurality of layers of sub-cover plates;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
In this embodiment, the ion exchange manner for each layer of the sub-cover plate is the same as that of the above embodiment, and is not described herein again.
Because, when the thickness of required apron is thicker, when carrying out ion exchange to the apron of integration, along with the continuous increase of ion exchange degree of depth, its ion exchange's effect is relatively poor, leads to the refracting index of apron to change relatively poorly, consequently, in this embodiment, carry out ion exchange respectively to the sub-apron that the multilayer thickness is thinner, laminate again at last, form required apron structure, the ion exchange degree of each layer of sub-apron that can better control, and then make the refracting index change of apron more approach the requirement of idealization.
In the manufacturing method, the flexible cover plate which is formed by hot bending is processed separately, but other manufacturing methods are also possible in the embodiment of the present invention, for example, mask shielding is performed on the side edge and the bottom of a whole cover plate, ion exchange is performed on the front surface of the cover plate, and after the ion exchange is completed, the side display area cover plate and the front display area cover plate are not on the same horizontal plane by performing hot bending, polishing, detection and other processes on the cover plate.
Since the light of the positive display region is incident at a right angle, the refractive index of the cover plate of the positive display region has substantially no influence on the propagation path of the light.
Further, based on all the above embodiments of the present invention, in another embodiment of the present invention, a display panel is further provided, referring to fig. 10, and fig. 10 is a schematic structural diagram of a display panel provided in an embodiment of the present invention.
The display panel includes the cover plate.
The display panel comprises a front display area and a side display area;
the front display area and the front display area cover plate BC are superposed along the orthographic projection of a first visual angle;
the side display area and the side display area cover plates AB and CD coincide along an orthographic projection of the second viewing angle.
The first visual angle is a positive visual angle, and the second visual angle is a side visual angle.
In this embodiment, by providing the cover plate structure provided by the embodiment of the present invention, the display panel can change the light propagation path passing through the cover plate of the side display region, so that the changed light propagation path is inclined in a direction perpendicular to the cover plate of the front display region, thereby obtaining a good viewing angle and further improving the display effect.
Further, based on all the above embodiments of the present invention, in another embodiment of the present invention, an electronic device is further provided, referring to fig. 11, and fig. 11 is a schematic structural diagram of an electronic device provided in an embodiment of the present invention.
The electronic device 18 includes the display panel, which includes but is not limited to a mobile phone or a tablet.
In this embodiment, the electronic device 18 can greatly improve the display effect by setting the display panel structure provided by the embodiment of the present invention.
The above detailed descriptions of the cover plate, the manufacturing method, the display panel and the electronic device provided by the invention, and the specific examples are applied herein to explain the principle and the implementation of the invention, and the descriptions of the above examples are only used to help understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A cover plate, characterized in that the cover plate comprises: the display device comprises a front display area cover plate and a side display area cover plate which is adjacently arranged on at least one side of the front display area cover plate, wherein the side display area cover plate and the front display area cover plate are not on the same horizontal plane;
the side display area cover comprises at least one layer of sub-cover in a first direction,
the first direction is a direction in which the inner side of the side display area cover plate points to the outer side of the side display area cover plate; the side of the side display area cover plate, which forms an included angle with the front display area cover plate, is the inner side, and the side, which is separated from the inner side through the side display area cover plate, is the outer side;
the refractive index of at least one layer of the sub cover plates in the first direction is reduced in sequence, and the minimum refractive index is larger than that of air.
2. The cover sheet of claim 1, wherein the side display area cover sheet comprises a layer of sub-cover sheets in the first direction, the layer of sub-cover sheets comprising a plurality of virtual film layers;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
3. The cover sheet of claim 1, wherein the side display area cover sheet comprises a plurality of layers of sub-cover sheets stacked in sequence in the first direction.
4. The cover sheet of claim 3, wherein each of the sub-cover sheets comprises a plurality of virtual film layers;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
5. The cover sheet of claim 2 or 4, wherein each of the dummy film layers contains first ions and second ions;
wherein the content of the first ions in the plurality of dummy film layers is gradually increased in the first direction, and the content of the second ions in the plurality of dummy film layers is gradually decreased in the first direction;
the ionic radius of the first ion is greater than the ionic radius of the second ion.
6. The cover sheet according to claim 1, wherein at least one layer of the sub-cover sheets has a maximum value of refractive index n in the first direction0The incident angle of light incident on the cover plate is theta1Then n is0＜1/sinθ1。
7. The method of claim 6Wherein an acute angle formed by the planes of the side display region cover and the front display region cover is β, n is0≤sinβ/sinθ1。
8. A manufacturing method of a cover plate is characterized by comprising the following steps:
providing a cover plate to be processed, wherein the cover plate to be processed comprises: the display device comprises a front display area cover plate and a side display area cover plate which is adjacently arranged on at least one side of the front display area cover plate, wherein the side display area cover plate and the front display area cover plate are not on the same horizontal plane;
processing the side display area cover plate so that the refractive indexes of the side display area cover plate in a first direction are sequentially reduced, and the minimum refractive index is larger than that of air; the side of the included angle formed by the side display area cover plate and the front display area cover plate is the inner side, and the side separated from the inner side by the side display area cover plate is the outer side.
9. The method of claim 8, wherein when the side display region cover is a sub-cover,
carrying out ion exchange on the sub-cover plate to form a multilayer virtual film layer;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
10. The manufacturing method according to claim 8, wherein when the side display region cover plate is a plurality of sub-cover plates stacked in sequence,
carrying out ion exchange on each layer of the sub-cover plate, wherein each layer of the sub-cover plate forms a plurality of virtual film layers;
carrying out laminating treatment on the plurality of layers of sub-cover plates;
the refractive index of the plurality of virtual film layers in the first direction is gradually reduced, and the refractive index of the virtual film layer close to the outer side is larger than that of air.
11. A display panel characterized in that it comprises a cover plate according to any one of claims 1 to 10.
12. The display panel according to claim 11, wherein the display panel includes a front display area and a side display area;
wherein the front display area and the front display area cover plate are superposed along the orthographic projection of a first visual angle;
the side display area and the side display area cover plate are superposed along the orthographic projection of the second visual angle.
13. An electronic device characterized in that it comprises a display panel according to any one of claims 11-12.
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| CN201911407553.8A CN111145658A (en) | 2019-12-31 | 2019-12-31 | Cover plate, manufacturing method thereof, display panel and electronic equipment |
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| CN201911407553.8A CN111145658A (en) | 2019-12-31 | 2019-12-31 | Cover plate, manufacturing method thereof, display panel and electronic equipment |
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| CN113888983A (en) * | 2021-11-01 | 2022-01-04 | 合肥维信诺科技有限公司 | Cover plate and flexible display module |
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