CN108663840B - Display device and manufacturing method thereof - Google Patents

Display device and manufacturing method thereof Download PDF

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Publication number
CN108663840B
CN108663840B CN201810394780.0A CN201810394780A CN108663840B CN 108663840 B CN108663840 B CN 108663840B CN 201810394780 A CN201810394780 A CN 201810394780A CN 108663840 B CN108663840 B CN 108663840B
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substrate
cover plate
refractive index
glass cover
display device
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CN108663840A (en
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郑斌义
杨雁
吴玲
沈柏平
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention discloses a display device and a manufacturing method thereof, belonging to the technical field of display and comprising the following steps: the display panel comprises a curved surface display panel and a glass cover plate attached to the curved surface display panel; the glass cover plate comprises a glass substrate and a refraction layer, and the refraction layer is positioned on one side of the glass cover plate close to the curved surface display panel; the display device has a first bending region thereon. The curvature R1 of the glass substrate in the first bending region is the smallest, namely R1<Rx, refractive index of the glass substrate in the first bending region is Nj1. In order to avoid the brightness difference between the first bending area and other areas in the display device, the glass cover plate has a refractive index N in the first bending areag1In other regions of refractive index NgxSetting Ng1<Nj1，Ng1＜Ngx. Therefore, the brightness difference between the first bending area and other areas in the display device is reduced, the uniformity of the brightness of the display device is improved, and the display quality is improved.

Description

Display device and manufacturing method thereof
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
As shown in fig. 1, in the curved display device 01 provided by the prior art, both the curved display panel 02 and the glass cover 03 have a curved region a, and the refractive index of the light beam L0 passing through the curved region a is greatly different from that of other regions, so that the curved region a has different display brightness from that of other regions during the display process, and the display quality is poor.
Disclosure of Invention
In view of the above, the present invention provides a display device and a method for manufacturing the same.
The present invention provides a display device including: the display panel comprises a curved surface display panel and a glass cover plate attached to the curved surface display panel; the glass cover plate comprises a glass substrate and a refraction layer, and the refraction layer is positioned on one side of the glass cover plate close to the curved surface display panel; the display device comprises a first bending area, the curvature of the glass substrate in the first bending area is a first curvature, the curvature of any area of the glass substrate except the first bending area is Rx, and R1 < Rx; the refractive index of the glass substrate in the first bending region is the refractive index N of the first glass substratej1The refractive index of the glass cover plate in the first bending region is the refractive index N of the first glass cover plateg1Wherein N isg1<Nj1(ii) a The refractive index of any region of the glass cover plate except the first bending region is Ngx，Ng1＜Ngx。
The invention also provides a manufacturing method of the display device, which is used for manufacturing the display device provided by the invention.
Compared with the prior art, the display device and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:
the display device includes a first bending region in which a curvature R1 of the glass substrate is smallest, i.e., R1<Rx, in other words, the glass substrate in the first bending region is bent more, and the glass substrate in the first bending region is bent more than the other regions. Refractive index N of glass substrate in first bending regionj1Larger, refractive index N of the glass substrate in the first bending regionj1The difference in refractive index from the glass substrate in the other region is large. In order to avoid the brightness difference between the first bending area and other areas in the display device, the invention provides the display device, wherein the side of the glass cover plate close to the curved display panel is provided with the refraction layer. The glass substrate provided with the refraction layer is a glass cover plate, and the refractive index of the glass cover plate in the first bending area is the refractive index N of the first glass cover plateg1And N isg1<Nj1That is, in the first bending region, the refractive index of the glass cover plate after the provision of the refraction layer is small withoutThe refractive index of the glass cover plate provided with the refraction layer is larger. Therefore, in the glass cover plate provided with the refractive layer, the refractive index of the first bending region is reduced to reduce the luminance difference between the first bending region and other regions in the display device.
In addition, the curved display panel and the glass cover plate are attached, that is, in the first bending area, the curved display panel is correspondingly bent, so that the refractive index of the curved display panel in the first bending area is larger than that of the curved display panel in other areas. In the display device provided by the invention, N is setg1＜NgxI.e. the refractive index N of the glass cover plate in the first bending regiong1And the larger refractive index of the curved display panel in the first bending area is balanced to further reduce the brightness difference between the first bending area and other areas in the display device, improve the brightness uniformity of the display device and improve the display quality.
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 thereof, 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 cross-sectional view of a display device according to the prior art;
fig. 2 is a schematic cross-sectional view of a display device according to an embodiment of the invention;
fig. 3 is a schematic cross-sectional view of another display device according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of another display device according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view illustrating another display device according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view illustrating a polarizer of another display device according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for manufacturing a display device according to an embodiment of the invention;
fig. 7a to 7f are schematic cross-sectional structures of the display device corresponding to the manufacturing method provided in fig. 7.
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 those 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.
Referring to fig. 2, fig. 2 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the invention. An embodiment of the present invention provides a display device 100, including: the display panel comprises a curved surface display panel 11 and a glass cover plate 12 attached to the curved surface display panel; the glass cover plate 12 comprises a glass substrate 13 and a refraction layer 14, wherein the refraction layer 14 is positioned on one side of the glass cover plate 12 close to the curved display panel 11; the display device 100 includes a first bending region C1, a curvature of the glass substrate 13 in the first bending region C1 is a first curvature R1, and a curvature of any region of the glass substrate 13 except the first bending region C1 isRx, R1 < Rx; the refractive index of the glass substrate 13 in the first bending region C1 is the first glass substrate refractive index Nj1The refractive index of the glass cover plate 12 in the first bending region C1 is the first glass cover plate refractive index Ng1Wherein N isg1<Nj1(ii) a The glass cover plate 12 has a refractive index N in any region except the first bending region C1gx，Ng1＜Ngx。
As shown in FIG. 2, the glass cover plate 12 includes a glass substrate 13 and a refractive layer 14, the display device 100 has a first bending region C1 with a first curvature R1, and the refractive index of the light L passing through the glass substrate 13 in the first bending region C1 is the refractive index N of the first glass substratej1The refractive index of the light L passing through the glass cover plate 12 in the first bending region C1 is Ng1The refractive index of the light ray L passing through the glass cover plate 12 in the region of curvature Rx is NgxAnd satisfy Ng1<Nj1，Ng1＜Ngx。
That is, the display device 100 includes the first bending region C1 in which the curvature R1 of the glass substrate 13 is the smallest, i.e., R1, in the first bending region C1<Rx, in other words, the glass substrate 13 in the first bending region C1 is bent to a greater degree and the glass substrate 13 in the first bending region C1 is bent more than other regions. Refractive index N of the glass substrate 13 in the first bending region C1j1Larger, refractive index N of the glass substrate 13 in the first bending region C1j1The difference in refractive index from the glass substrate 13 in the other region is large. In order to avoid the brightness difference between the first bending region C1 and other regions in the display device 100, the present invention provides the display device 100, wherein the refractive layer 14 is disposed on the side of the glass cover 12 close to the curved display panel 11. The glass substrate 13 provided with the refractive layer 14 is a glass cover plate 12, and the refractive index of the glass cover plate 12 in the first bending region C1 is a first glass cover plate refractive index Ng1And N isg1<Nj1That is, in the first bending region C1, the refractive index of the glass cover plate 12 after the refractive layer 14 is provided is small, and the refractive index of the glass substrate 13 without the refractive layer 14 is large. Thus, in the glass cover plate 12 provided with the refraction layer 14, the first bendThe refractive index of the curved region C1 is decreased to reduce the difference in luminance between the first curved region C1 and other regions in the display device 100.
In addition, since the curved display panel 11 and the glass cover 12 are attached to each other, that is, the curved display panel 11 is also curved in the first curved region C1, the refractive index of the curved display panel 11 in the first curved region C1 is larger than that in other regions. In the display device 100 provided in the present embodiment, N is setg1＜NgxThat is, the refractive index N of the glass cover plate 12 in the first bending region C1g1The minimum is to balance the larger refractive index of the curved display panel 11 in the first curved region C1, so as to further reduce the brightness difference between the first curved region C1 and other regions in the display device 100, improve the uniformity of the brightness of the display device 100, and improve the display quality.
Optionally, referring to fig. 2, the refractive layer 14 includes a refractive material layer and/or a refractive film layer. Specifically, coating the refractive material layer means that the refractive layer 14 can realize the function of different refractive indexes at different positions by coating refractive materials with different refractive indexes on different areas of the glass substrate 13; attaching the refractive film layer means attaching a refractive film having a specific refractive index to the glass substrate 13 to realize a refractive function. In a specific implementation manner, the material and the manufacturing manner of the refractive layer can be selected according to different application occasions and requirements. The refractive layer 14 is a transparent film material, and the invention is not limited to the specific material.
Optionally, referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of another display device according to an embodiment of the present invention. In order to more clearly illustrate the technical features of the embodiment of the present invention, fig. 3 is a drawing in which the curved display panel 11 and the glass cover plate 12 are separately attached, and the actual structures of the curved display panel 11 and the glass cover plate 12 are attached to each other. As shown in fig. 3, in the first bending region C1, the thickness of the curved display panel 11 is Dp1The refractive index of the curved display panel 11 is Np1The thickness of the glass cover plate 12 is dg1, and the thickness of the curved display panel is D in any region except the first bending region C1x1Display panel with curved surfaceRefractive index of 11 is Nx1The thickness of the glass cover plate 12 is dx1, Np1*Dp1+Ng1*dg1＝Nx1*Dx1+Ngx*dx1。
To facilitate calculation of the refractive index of the refractive layer 14 in embodiments of the present invention, a concept of an optical path is introduced, wherein the optical path means that the path of light propagating in a medium is folded into a corresponding path of light propagating in a vacuum, and the value of the optical path is equal to the refractive index of the medium multiplied by the path of light propagating in the medium. In this embodiment, the optical path length value of the curved display panel 11 in the first bending region C1 of the display device 100 is Np1*Dp1The optical path value of the glass cover plate 12 is Ng1Dg 1; the optical path value of the curved display panel 11 in the other region is Nx1*Dx1The optical path value of the glass cover plate 12 is NgxDx 1. When the optical path values of the first curved area C1 and the other areas tend to be uniform, the luminance of the display device 100 also tends to be uniform. Alternatively, the sum of the optical path value of the curved display panel 11 and the optical path value of the glass cover 12 in the first bending region C1 may be made equal to the sum of the optical path value of the curved display panel 11 and the optical path value of the glass cover 12 in the other region, that is, Np1*Dp1+Ng1*dg1＝Nx1*Dx1+NgxDx1, the optical path value of the first bending region C1 is consistent with the optical path values of the other regions, and the brightness consistency of the first bending region C1 and the other regions is improved, so that the display performance of the display device 100 is improved.
Optionally, referring to fig. 4, fig. 4 is a schematic cross-sectional structure diagram of another display device provided in an embodiment of the present invention, in order to more clearly illustrate technical features of the embodiment of the present invention, fig. 4 separately draws the attached curved display panel 11 and the glass cover plate 12, and actual structures of the curved display panel 11 and the glass cover plate 12 are attached to each other. As shown in fig. 4, the curved display panel 11 includes an array substrate 17 and a color filter substrate 15 that are oppositely disposed, where the array substrate 17 includes a first substrate 18, and the color filter substrate 15 includes a second substrate 19. In the first bending region C1, the thickness of the first substrate base plate 18 is d11, and the first substrateThe refractive index of the substrate 18 is Nt11The thickness of the second base substrate 19 is d12, and the refractive index of the second base substrate 19 is Nt12The glass cover plate 12 has a thickness dg1, and in any region except the first bending region C1, the first substrate 18 has a thickness dx11, and the first substrate 18 has a refractive index Ntx1The thickness of the second base substrate 19 is dx22, and the refractive index of the second base substrate 19 is Ntx2The thickness of the glass cover plate 12 is dx1, where Nt11*d11+Nt12*d12+Ng1*dg1＝Ntx1*dx11+Ntx2*dx22+Ngx*dx1。
In this embodiment, in the first bending region C1, the optical path length value of the first substrate 18 on the array substrate 17 of the display device 100 is Nt11D11, the optical path value of the second substrate on the color film substrate 15 is Nt12D12, optical path value of the glass cover plate 12 is Ng1Dg 1; in other regions, the optical path value of the first substrate 18 on the array substrate 17 is Ntx1Dx11, optical path value N of the second substrate on the color filter substrate 15tx2Dx22, optical path value N of the glass cover plate 12gxDx 1. When the optical path values of the first curved area C1 and the other areas tend to be uniform, the luminance of the display device 100 also tends to be uniform. Optionally, the sum of the optical path values of the array substrate 17, the color filter substrate 15 and the glass cover plate 12 in the first bending region C1 is equal to the sum of the optical path values of the array substrate 17, the color filter substrate 15 and the glass cover plate 12 in other regions, so that the optical path value of the first bending region C1 is consistent with the optical path values of the other regions, and the brightness consistency of the first bending region C1 and the other regions is improved, thereby improving the display performance of the display device 100.
Optionally, referring to fig. 4, the curved display panel 11 further includes a liquid crystal layer 22.
Optionally, referring to fig. 5, fig. 5 is a schematic cross-sectional structure diagram of another display device provided in an embodiment of the present invention, in order to more clearly illustrate technical features of the embodiment of the present invention, fig. 5 separately draws a curved display panel 11 and a glass cover plate 12 to be attached, and actual structures of the curved display panel 11 and the glass cover plate 12 are attached to each other. The first substrate 18 and the second substrate 19 are both flexible substrates. The flexible substrate is generally a polymer material such as polyimide plastic, polyetheretherketone or transparent conductive polyester, which is light, thin, flexible and bendable, and the invention is not limited thereto. The first substrate 18 and the second substrate 19 are made of flexible substrates, so that the curved display panel can be easily bent or bent.
Optionally, referring to fig. 5, the curved display panel 11 further includes a liquid crystal layer 22.
Alternatively, referring to fig. 5 to 6, fig. 6 is a schematic cross-sectional structure view of a polarizing plate of another display device according to an embodiment of the present invention. The display device 100 further comprises a first polarizing plate 20 and a second polarizing plate 21, the first polarizing plate 20 is clamped between the glass cover plate 12 and the color film substrate 15, one side of the first polarizing plate 20 is attached to the glass cover plate 12 through a pressure-sensitive adhesive layer 26, and the other side of the first polarizing plate 20 is attached to one side of the color film substrate 15, which is far away from the array substrate 17, through an optical adhesive layer 27; one side of the second polarizing plate 21 is attached to the side of the array substrate 17 away from the color film substrate 15 through the pressure sensitive adhesive layer 26. By adopting the stack structure provided by the embodiment of the invention, the stress deformation caused by external bending force in the process of manufacturing the curved display panel 11 by the first polarizing plate 20 and the second polarizing plate 21 can be effectively improved, so that the four-corner light leakage of the display panel in a dark state is reduced, and the display performance of the display device 100 is improved.
Alternatively, referring to fig. 6, the first polarizing plate 20 and the second polarizing plate 21 respectively include: the first protective layer 23; a polarizing base layer 24, the polarizing base layer 24 covering the first protective layer 23; a second protective layer 25, the second protective layer 25 covering the polarizing base layer 24; a pressure sensitive adhesive layer 26, the pressure sensitive adhesive layer 26 covering the second protective layer 25. In the first polarizing plate 20 and the second polarizing plate 21, the polarizing base layer 24 is used for polarization, but the polarizing base layer 24 is easily hydrolyzed, and in order to protect the physical properties of the polarizing plates, protective films having high light transmittance, good water resistance and certain mechanical strength are required to be respectively compounded on both sides of the polarizing base layer 24 for protection, that is, the first protective layer 23 and the second protective layer 25 in the embodiment of the present invention. According to the requirement of this embodiment, a pressure-sensitive adhesive layer 26 with a certain thickness is further coated on one side of the first polarizing plate 20 and the second polarizing plate 21 to complete the attachment.
Optionally, please refer to fig. 6-7 and fig. 7a to 7f in combination, fig. 7 is a flowchart of a manufacturing method of a display device according to an embodiment of the present invention, and fig. 7a to 7f are schematic cross-sectional views of the display device corresponding to the manufacturing method provided in fig. 7. The embodiment of the invention also provides a manufacturing method of the display device, which comprises the following steps:
step S1: providing a curved display panel 11;
specifically, referring to fig. 7a, a curved display panel 11 is provided, where the curved display panel 11 has a first bending area C1.
Step S2: providing a glass substrate 13;
specifically, referring to fig. 7b, a glass substrate 13 is provided, and the glass substrate 13 also has a first bending region C1. It should be noted that, in the embodiment of the present invention, the glass substrate 13 may also be made of other flexible materials, for example, made of plastic, and the present invention is not limited to this.
Step S3: a refractive layer 14 is provided on one side surface of the glass substrate 13 to form a glass cover plate 12; the display device 10 includes a first bending region C1, the curvature of the glass substrate 13 in the first bending region C1 is a first curvature R1, and the curvature of the glass substrate 13 in the first bending region C1 is smaller than the curvature of the glass substrate 13 in the remaining region;
specifically, referring to fig. 7c, a refractive layer 14 is disposed on a side of the glass substrate 13 close to the display panel 11 to form the glass cover 12. The curvature of the glass substrate 13 in the first bending region C1 is the first curvature R1, and the curvature of the glass substrate 13 in the first bending region C1 is smaller than the curvature of the glass substrate 13 in the remaining region, i.e., the curvature of the first bending region C1 on the glass substrate 13 is larger than the curvature of the remaining region.
Step S4: the refractive index of the glass substrate 13 in the first bending region C1 is the first glass substrate refractive index Nj1The refractive index of the glass cover plate 12 in the first bending region is the first glass cover plate refractive index Ng1Wherein N isg1<Nj1；
Specifically, referring to fig. 7C, the refractive index of the glass substrate 13 in the first bending region C1 is the refractive index N of the first glass substratej1The refractive index of the glass cover plate 12 in the first bending region is the first glass cover plate refractive index Ng1Wherein N isg1<Nj1I.e., the refractive index N of the glass substrate 13 in the first bending region C1j1Larger, refractive index N of the glass substrate 13 in the first bending region C1j1The difference in refractive index from the glass substrate 13 in the other region is large. In order to avoid the brightness difference between the first bending region C1 and other regions in the display device 100, the refractive layer 14 is disposed on the side of the glass cover 12 close to the curved display panel 11. The glass substrate 13 provided with the refractive layer 14 is a glass cover plate 12, and the refractive index of the glass cover plate 12 in the first bending region C11 is a first glass cover plate refractive index Ng1And N isg1<Nj1That is, in the first bending region C1, the refractive index of the glass cover plate 12 after the refractive layer 14 is provided is small, and the refractive index of the glass substrate 13 without the refractive layer 14 is large. Accordingly, in the glass cover plate 13 provided with the refractive layer 14, the refractive index of the first bending region C1 is reduced to reduce the luminance difference between the first bending region C1 and other regions in the display device 100.
Step S5: attaching a first polarizing plate 20 to a side of the glass cover plate 12 on which the refraction layer 14 is disposed to form a first cover plate 12';
specifically, referring to fig. 7d, the curved display panel 11 has a liquid crystal layer 22, and a first polarizer 20 is disposed between the refractive layer 14 and the liquid crystal layer 22 to form a first cover 12'.
Step S6: attaching the first cover plate 12' and the curved display panel 11;
specifically, referring to fig. 7e and fig. 6, the first cover plate 12 'is attached to the curved display panel 11, one side of the first polarizing plate 20 on the first cover plate 12' is attached to the glass cover plate 12 through the pressure sensitive adhesive layer 26, and the other side is attached to one side of the color film substrate 15 away from the array substrate 17 through the optical adhesive layer 27.
Step S7: a second polarizing plate 21 is attached to the surface of the curved display panel 11 facing away from the glass cover 12.
Specifically, referring to fig. 7f and fig. 6, a second polarizing plate 21 is attached to a surface of the curved display panel 11 on a side away from the glass cover 12, and a side of the second polarizing plate 21 is attached to a side of the array substrate 17 away from the color filter substrate 15 through a pressure sensitive adhesive layer 26.
In the manufacturing method provided in this embodiment, since the curved display panel 11 and the glass cover 12 are attached to each other, that is, the curved display panel 11 is also correspondingly curved in the first curved region C1, so that the refractive index of the curved display panel 11 in the first curved region C1 is greater than that in other regions. In the display device 100 provided in the present embodiment, N is setg1＜NgxThat is, the refractive index N of the glass cover plate 12 in the first bending region C1g1The minimum is to balance the larger refractive index of the curved display panel 11 in the first curved region C1, so as to further reduce the brightness difference between the first curved region C1 and other regions in the display device 100, improve the uniformity of the brightness of the display device 100, and improve the display quality.
By adopting the structure that the first polarizing plate 20 is attached to one side of the glass cover plate 12 and the second polarizing plate 21 is attached to one side of the curved display panel 11, stress deformation caused by external bending force in the process of manufacturing the curved display panel 11 by the first polarizing plate 20 and the second polarizing plate 21 can be effectively improved, so that four-corner light leakage of the display panel in a dark state is reduced, and the display performance of the display device 100 is improved.
Optionally, referring to fig. 7c, disposing the refractive layer 14 on the surface of one side of the glass substrate 13 includes coating a refractive material layer and/or attaching a refractive film layer on the surface of one side of the glass substrate 13. Specifically, coating the refractive material layer means that the refractive layer 14 can realize a refractive function by coating refractive materials with different refractive indexes on different areas of the glass substrate 13; attaching the refraction film layer means that a refraction film having a specific refractive index is made to be attached to the glass substrate 13 to realize a refraction function. In a specific implementation manner, the material and the manufacturing manner of the refractive layer can be selected according to different application occasions and requirements. The refractive layer 14 is a transparent film material, and the invention is not limited to the specific material.
As can be seen from the above embodiments, the display device and the manufacturing method thereof provided by the present invention at least achieve the following beneficial effects:
the display device includes a first bending region in which a curvature R1 of the glass substrate is smallest, i.e., R1<Rx, in other words, the glass substrate in the first bending region is bent more, and the glass substrate in the first bending region is bent more than the other regions. Refractive index N of glass substrate in first bending regionj1Larger, refractive index N of the glass substrate in the first bending regionj1The difference in refractive index from the glass substrate in the other region is large. In order to avoid the brightness difference between the first bending area and other areas in the display device, the invention provides the display device, wherein the side of the glass cover plate close to the curved display panel is provided with the refraction layer. The glass substrate provided with the refraction layer is a glass cover plate, and the refractive index of the glass cover plate in the first bending area is the refractive index N of the first glass cover plateg1And N isg1<Nj1That is, in the first bending region, the refractive index of the glass cover plate after the refractive layer is provided is small, and the refractive index of the glass substrate without the refractive layer is large. Therefore, in the glass cover plate provided with the refractive layer, the refractive index of the first bending region is reduced to reduce the luminance difference between the first bending region and other regions in the display device.
In addition, the curved display panel and the glass cover plate are attached, that is, in the first bending area, the curved display panel is correspondingly bent, so that the refractive index of the curved display panel in the first bending area is larger than that of the curved display panel in other areas. In the display device provided by the invention, N is setg1＜NgxI.e. the refractive index N of the glass cover plate in the first bending regiong1And the larger refractive index of the curved display panel in the first bending area is balanced to further reduce the brightness difference between the first bending area and other areas in the display device, improve the brightness uniformity of the display device and improve the display quality.
The display device further comprises a first polarizing plate and a second polarizing plate, wherein the first polarizing plate is clamped between the glass cover plate and the color film substrate, one side of the first polarizing plate is attached to the glass cover plate through a pressure-sensitive adhesive layer, the other side of the first polarizing plate is attached to one side, away from the array substrate, of the color film substrate through an optical adhesive layer, and one side of the second polarizing plate is attached to one side, away from the color film substrate, of the array substrate through a pressure-sensitive adhesive layer.
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 may 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 (9)

1. A display device, comprising:
the display panel comprises a curved surface display panel and a glass cover plate attached to the curved surface display panel; the curved surface display panel comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the array substrate and the color film substrate are arranged oppositely, and the liquid crystal layer is positioned between the array substrate and the color film substrate;
the glass cover plate comprises a glass substrate and a refraction layer, and the refraction layer is positioned on one side, close to the curved surface display panel, of the glass cover plate;
the display device comprises a first bending area, the radius of curvature of the glass substrate in the first bending area is a first radius of curvature R1, the radius of curvature of any area of the glass substrate except the first bending area is Rx, R1 < Rx;
the refractive index of the glass substrate in the first bending region is a first glass substrate refractive index Nj1The refractive index of the glass cover plate in the first bending region is the secondRefractive index N of glass cover plateg1Wherein N isg1<Nj1；
The refractive index of any region of the glass cover plate except the first bending region is Ngx，Ng1＜Ngx。
2. The display device according to claim 1, wherein the refractive layer comprises a layer of coated refractive material and/or a layer of attached refractive film.
3. The display device according to claim 1,
in the first bending area, the thickness of the curved display panel is Dp1The refractive index of the curved surface display panel is Np1The thickness of the glass cover plate is dg 1;
in any region except the first bending region, the thickness of the curved display panel is Dx1The refractive index of the curved surface display panel is Nx1The thickness of the glass cover plate is dx 1;
Np1*Dp1+Ng1*dg1＝Nx1*Dx1+Ngx*dx1。
4. the display device according to claim 1,
the array substrate comprises a first substrate, and the color film substrate comprises a second substrate;
in the first bending region, the first substrate base plate has a thickness d11 and a refractive index Nt11The thickness of the second substrate base plate is d12, and the refractive index of the second substrate base plate is Nt12The thickness of the glass cover plate is dg 1;
in any region except the first bending region, the first substrate base plate has a thickness dx11, and the refractive index of the first substrate base plate is Ntx1The thickness of the second substrate base plate is dx22, and the refractive index of the second substrate base plate is Ntx2What is, what isThe thickness of the glass cover plate is dx 1;
wherein N ist11*d11+Nt12*d12+Ng1*dg1＝Ntx1*dx11+Ntx2*dx22+Ngx*dx1。
5. The display device according to claim 4,
the first substrate base plate and the second substrate base plate are both flexible base plates.
6. The display device according to claim 4,
the display device further includes: a first polarizing plate and a second polarizing plate;
the first polarizing plate is clamped between the glass cover plate and the color film substrate, one side of the first polarizing plate is attached to the glass cover plate through a pressure-sensitive adhesive layer, and the other side of the first polarizing plate is attached to one side of the color film substrate, which is far away from the array substrate, through an optical adhesive layer; and one side of the second polarizing plate is attached to one side of the array substrate, which is deviated from the color film substrate, through a pressure sensitive adhesive layer.
7. The display device according to claim 6, wherein the first polarizing plate and the second polarizing plate respectively comprise:
a first protective layer;
a polarizing base layer covering the first protective layer;
a second protective layer covering the polarizing base layer;
and the pressure-sensitive adhesive layer covers the second protective layer.
8. A method for manufacturing a display device, comprising:
providing a curved surface display panel, wherein the curved surface display panel comprises an array substrate, a color film substrate and a liquid crystal layer, the array substrate and the color film substrate are arranged oppositely, and the liquid crystal layer is positioned between the array substrate and the color film substrate;
providing a glass substrate;
arranging a refraction layer on one side surface of the glass substrate to form a glass cover plate; the display device includes a first curved region in which a radius of curvature of the glass substrate is a first radius of curvature R1, the radius of curvature of the glass substrate in the first curved region being smaller than the radius of curvature of the glass substrate in the remaining region;
the refractive index of the glass substrate in the first bending region is a first glass substrate refractive index Nj1The refractive index of the glass cover plate in the first bending area is a first glass cover plate refractive index Ng1Wherein N isg1<Nj1；
Attaching a first polarizing plate to one side of the glass cover plate, on which the refraction layer is arranged, to form a first cover plate;
attaching the first cover plate and the curved surface display panel;
and a second polarizing plate is attached to the surface of one side, deviating from the glass cover plate, of the curved surface display panel.
9. The method of manufacturing according to claim 8,
the glass substrate is provided with a refraction layer on one side surface, and the refraction layer comprises:
and coating a refraction material on one side surface of the glass substrate or attaching a refraction film.
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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109410766B (en) * 2018-12-18 2021-03-02 武汉天马微电子有限公司 Display device and electronic equipment
CN109445158A (en) * 2018-12-25 2019-03-08 武汉天马微电子有限公司 Display device and electronic equipment
CN112014917B (en) * 2019-05-31 2022-07-15 北京小米移动软件有限公司 Polaroid, display and terminal
KR20200140450A (en) * 2019-06-05 2020-12-16 삼성디스플레이 주식회사 Display device including protective window
CN110308580A (en) * 2019-06-26 2019-10-08 厦门天马微电子有限公司 It is bent liquid crystal display device and preparation method thereof
CN111129086B (en) * 2019-12-13 2024-06-18 武汉华星光电技术有限公司 Flexible display panel and manufacturing method thereof
CN111145658A (en) * 2019-12-31 2020-05-12 武汉天马微电子有限公司 Cover plate, manufacturing method thereof, display panel and electronic equipment
TWI776657B (en) * 2021-08-26 2022-09-01 明基材料股份有限公司 All-around curved polarizer
CN114415412B (en) * 2022-03-29 2022-08-30 惠科股份有限公司 Flexible display panel and preparation method thereof

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007193077A (en) * 2006-01-19 2007-08-02 Sharp Corp Liquid crystal display device
CN101149511A (en) * 2006-09-21 2008-03-26 日东电工株式会社 Liquid crystal panel and liquid crystal display device
JP2008089884A (en) * 2006-09-29 2008-04-17 Toshiba Corp Display device
CN101290445A (en) * 2008-06-05 2008-10-22 友达光电股份有限公司 Curved face display panel and method of manufacture
CN101598873A (en) * 2008-06-04 2009-12-09 瀚宇彩晶股份有限公司 Liquid crystal indicator and mode of operation thereof
CN103837921A (en) * 2012-11-20 2014-06-04 三星显示有限公司 Polarizer and liquid crystal display including same
CN103913886A (en) * 2013-12-31 2014-07-09 厦门天马微电子有限公司 Color film substrate, display device and color film substrate manufacturing method
CN104597653A (en) * 2015-02-10 2015-05-06 京东方科技集团股份有限公司 Display panel and display device
CN104871078A (en) * 2012-12-21 2015-08-26 大陆汽车有限责任公司 Electro-optical display with a transparent cover
CN105182590A (en) * 2015-10-10 2015-12-23 京东方科技集团股份有限公司 Touch display panel and preparation method thereof as well as display device
CN205679890U (en) * 2016-06-20 2016-11-09 上海天马微电子有限公司 Curved surface liquid crystal display and display device
CN205910677U (en) * 2016-07-11 2017-01-25 信利光电股份有限公司 Curved surface touch screen, curved surface protection apron and curved surface liquid crystal display module
US9568800B1 (en) * 2015-02-03 2017-02-14 Amazon Technologies, Inc. Thin border displays
CN106843579A (en) * 2017-01-16 2017-06-13 京东方科技集团股份有限公司 A kind of display device and preparation method thereof
CN106887412A (en) * 2017-03-27 2017-06-23 京东方科技集团股份有限公司 A kind of flexible display panels and display device
JP2017129773A (en) * 2016-01-21 2017-07-27 三菱電機株式会社 Liquid crystal display panel
CN107111174A (en) * 2014-11-14 2017-08-29 罗伯特·博世有限公司 Method and apparatus and display for optical bonding
CN107170775A (en) * 2017-04-12 2017-09-15 上海天马有机发光显示技术有限公司 Using the display device of thin-film package
CN107425016A (en) * 2016-05-23 2017-12-01 株式会社日本显示器 Organic EL display and liquid crystal display device
JP2018155884A (en) * 2017-03-16 2018-10-04 スタンレー電気株式会社 Liquid crystal display

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0028890D0 (en) * 2000-11-27 2001-01-10 Isis Innovation Visual display screen arrangement
TWI379261B (en) * 2008-05-16 2012-12-11 Au Optronics Corp Curved display panel and manufacturing method thereof
KR101861948B1 (en) * 2014-05-12 2018-05-28 코닝 인코포레이티드 Method of improving optical quality of curved glass structures
KR102152178B1 (en) * 2014-06-13 2020-09-07 엘지디스플레이 주식회사 Curved liquid crystal display device and color filter substrate for the same
CN104992632A (en) * 2015-07-30 2015-10-21 京东方科技集团股份有限公司 Curved-surface display panel preparation method, curved-surface display panel and curved-surface display device
CN106383416B (en) * 2016-12-02 2019-05-31 宁波视睿迪光电有限公司 A kind of display device and preparation method thereof
CN106773346A (en) * 2016-12-23 2017-05-31 惠科股份有限公司 Curved surface display panel and curved surface display device
CN107085337B (en) * 2017-06-14 2020-07-10 厦门天马微电子有限公司 Array substrate, display panel and display device
CN107505750A (en) * 2017-09-06 2017-12-22 中航华东光电有限公司 Reinforcement type flexible displays

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007193077A (en) * 2006-01-19 2007-08-02 Sharp Corp Liquid crystal display device
CN101149511A (en) * 2006-09-21 2008-03-26 日东电工株式会社 Liquid crystal panel and liquid crystal display device
JP2008089884A (en) * 2006-09-29 2008-04-17 Toshiba Corp Display device
CN101598873A (en) * 2008-06-04 2009-12-09 瀚宇彩晶股份有限公司 Liquid crystal indicator and mode of operation thereof
CN101290445A (en) * 2008-06-05 2008-10-22 友达光电股份有限公司 Curved face display panel and method of manufacture
CN103837921A (en) * 2012-11-20 2014-06-04 三星显示有限公司 Polarizer and liquid crystal display including same
CN104871078A (en) * 2012-12-21 2015-08-26 大陆汽车有限责任公司 Electro-optical display with a transparent cover
CN103913886A (en) * 2013-12-31 2014-07-09 厦门天马微电子有限公司 Color film substrate, display device and color film substrate manufacturing method
CN107111174A (en) * 2014-11-14 2017-08-29 罗伯特·博世有限公司 Method and apparatus and display for optical bonding
US9568800B1 (en) * 2015-02-03 2017-02-14 Amazon Technologies, Inc. Thin border displays
CN104597653A (en) * 2015-02-10 2015-05-06 京东方科技集团股份有限公司 Display panel and display device
CN105182590A (en) * 2015-10-10 2015-12-23 京东方科技集团股份有限公司 Touch display panel and preparation method thereof as well as display device
JP2017129773A (en) * 2016-01-21 2017-07-27 三菱電機株式会社 Liquid crystal display panel
CN107425016A (en) * 2016-05-23 2017-12-01 株式会社日本显示器 Organic EL display and liquid crystal display device
CN205679890U (en) * 2016-06-20 2016-11-09 上海天马微电子有限公司 Curved surface liquid crystal display and display device
CN205910677U (en) * 2016-07-11 2017-01-25 信利光电股份有限公司 Curved surface touch screen, curved surface protection apron and curved surface liquid crystal display module
CN106843579A (en) * 2017-01-16 2017-06-13 京东方科技集团股份有限公司 A kind of display device and preparation method thereof
JP2018155884A (en) * 2017-03-16 2018-10-04 スタンレー電気株式会社 Liquid crystal display
CN106887412A (en) * 2017-03-27 2017-06-23 京东方科技集团股份有限公司 A kind of flexible display panels and display device
CN107170775A (en) * 2017-04-12 2017-09-15 上海天马有机发光显示技术有限公司 Using the display device of thin-film package

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A multi-directional backlight for a wide-angle, glasses-free 3D display;Fattal D;《Photonics Conference. IEEE, 2013.》;20130331 *
蓝相液晶材料与光子学器件研究进展;刘桢;《液晶与显示》;20170531;325-338 *

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