CN113035061B - Cover plate assembly, preparation method thereof and display device - Google Patents
Cover plate assembly, preparation method thereof and display device Download PDFInfo
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- CN113035061B CN113035061B CN202110217989.1A CN202110217989A CN113035061B CN 113035061 B CN113035061 B CN 113035061B CN 202110217989 A CN202110217989 A CN 202110217989A CN 113035061 B CN113035061 B CN 113035061B
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- G—PHYSICS
- 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
- G09F9/30—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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
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Abstract
The application relates to a cover plate assembly, a preparation method thereof and a display device, wherein the cover plate assembly comprises: the optical adhesive layer comprises a first optical adhesive layer and a second optical adhesive layer, and the second optical adhesive layer is provided with a preset pattern; the first optical adhesive layer at least partially surrounds the second optical adhesive layer, and a preset refractive index difference value is formed between the first optical adhesive layer and the second optical adhesive layer so that a preset pattern can be displayed within a preset angle range. When the display screen operates, the first optical adhesive layer and the second optical adhesive layer can not shield the display information of the display screen. And after the display screen stops running, the second optical adhesive layer mark information is hardly visible when the display screen is observed at a front view angle. Under the preset angle range, if the difference value of the reflectivity is increased when the mark is viewed at a side viewing angle, the mark information can be observed. The cover plate assembly can display the mark information in the corresponding area of the display screen, and meanwhile, the effective display area of the display screen is not affected.
Description
Technical Field
The application relates to the technical field of display, in particular to a cover plate assembly, a manufacturing method thereof and a display device.
Background
With the continuous development of display technology, display devices are more and more widely used, such as small portable electronic devices like mobile phones and flat panels, or large electronic devices like computers, vehicle-mounted display screens and televisions.
The display device usually desires to set some sign information, such as company logo or product model. Sometimes, there is insufficient area to accommodate logo information due to the smaller area of the bezel of the display device. Therefore, a proposal has been made in which logo information is provided in the display screen of the display device. However, the technical problem that the effective display area of the display screen is reduced due to the fact that the display screen is shielded by the mark information exists in the scheme.
Disclosure of Invention
The application provides a cover plate assembly, a manufacturing method thereof and a display device, and aims to solve the technical problem that the effective display area of a display screen is reduced when sign information is arranged in the display screen in a shielding mode.
In a first aspect, an embodiment of the present application provides a cover plate assembly, including: a first substrate; the optical adhesive layer is positioned on one surface of the first substrate and comprises a first optical adhesive layer and a second optical adhesive layer, and the second optical adhesive layer is provided with a preset pattern; the first optical adhesive layer at least partially surrounds the second optical adhesive layer, and a preset refractive index difference value is formed between the first optical adhesive layer and the second optical adhesive layer so that a preset pattern can be displayed within a preset angle range.
According to an embodiment of the present application, the cover plate assembly further includes a second substrate disposed on a side of the optical adhesive layer away from the first substrate.
According to one embodiment of the application, in the direction from the first substrate to the optical adhesive layer, the first surface of the second optical adhesive layer close to the first substrate and the second surface far away from the first substrate are both flat surfaces.
According to one embodiment of the application, the first surface and the second surface are both parallel to a plane in which the first substrate is located.
According to one embodiment of the application, in the direction from the first substrate to the optical adhesive layer, the first optical adhesive layer completely surrounds the second optical adhesive layer.
According to one embodiment of the present application, in a direction from the first substrate to the optical cement layer, the second optical cement layer is close to the first surface of the first substrate and far away from the second surface of the first substrate.
According to one embodiment of the application, the first surface and the second surface of the second optical adhesive layer are not surrounded by the first optical adhesive layer.
According to one embodiment of the present application, the difference in the preset refractive index of the first optical glue layer and the second optical glue layer is greater than or equal to 0.05.
According to one embodiment of the present application, the refractive indices of the first optical glue layer and the second optical glue layer are both in the range of 1.4-1.55.
According to one embodiment of the present application, the first substrate is a glass substrate having a thickness of 0.01 to 0.1 mm.
According to one embodiment of the present application, a surface of the first substrate or the second substrate has at least one of an anti-fingerprint layer, an anti-reflection layer, and an anti-glare layer.
According to one embodiment of the present application, the first optical glue layer includes anti-glare particles therein.
In a second aspect, an embodiment of the present application provides a method for manufacturing a cover plate assembly, including the following steps: the method comprises the steps of forming a first optical adhesive layer and a patterned second optical adhesive layer on a first substrate to form the optical adhesive layer, wherein the second optical adhesive layer is provided with a preset pattern, the first optical adhesive layer at least partially surrounds the second optical adhesive layer, and a preset refractive index difference value is formed between the first optical adhesive layer and the second optical adhesive layer to display the preset pattern within a preset angle range.
According to one embodiment of the present application, forming the first optical adhesive layer and the patterned second optical adhesive layer on the first substrate includes: forming a patterned second optical adhesive layer on the first substrate through a mask plate; and forming a first optical adhesive layer on the first substrate.
According to one embodiment of the present application, forming a first optical glue layer and a patterned second optical glue layer on a first substrate includes: prefabricating a second optical adhesive layer with a preset pattern; attaching the second optical adhesive layer to the first substrate; and forming a first optical adhesive layer on the first substrate.
In a third aspect, an embodiment of the present application provides a display device, which includes a display module and the above-mentioned cover plate module, where the cover plate module is fixed to the display module.
According to the cover plate assembly, the preset pattern of the second optical adhesive layer corresponds to the mark information to be displayed. The cover plate assembly is used for the display screen, and when the display screen operates, the first optical adhesive layer and the second optical adhesive layer cannot shield display information of the display screen. After the display screen stops operating, the difference between the reflectivity of light rays in the area corresponding to the first optical adhesive layer and the reflectivity of light rays in the area corresponding to the second optical adhesive layer is smaller when the first optical adhesive layer and the second optical adhesive layer are observed at a front view angle relative to the cover plate assembly under the condition that the difference between the preset refractive indexes is different, and the mark information of the second optical adhesive layer is almost invisible. In the preset angle range, if the difference of the reflectivity is increased when the mark is viewed at a side viewing angle, the mark information can be observed. The cover plate assembly can display the mark information in the corresponding area of the display screen, and meanwhile, the effective display area of the display screen is not affected.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a cover plate assembly according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a structure of an optical adhesive layer according to an embodiment of the disclosure;
FIG. 3 is a schematic view of the cover plate assembly of FIG. 1 in combination with a display assembly;
FIG. 4 is a schematic view of the light propagation from the side view of the cover plate assembly of FIG. 1;
FIG. 5 is a schematic illustration of a cover plate assembly according to another embodiment of the present disclosure;
FIG. 6 is a schematic illustration of a cover plate assembly according to another embodiment of the present disclosure;
FIG. 7 is a schematic illustration of a cover plate assembly according to another embodiment of the present disclosure;
FIG. 8 is a schematic illustration of a cover plate assembly according to another embodiment of the present disclosure;
FIG. 9 is a schematic view of the cover plate assembly and display assembly of FIG. 5 in combination;
FIG. 10 is a schematic view of another combination of the cover plate assembly and the display assembly of FIG. 5;
FIG. 11 is a schematic view of the light propagation from the side view of the cover plate assembly of FIG. 6;
fig. 12 is a schematic view illustrating still another combination of the cover plate assembly and the display assembly of fig. 5.
In the drawings, the drawings are not necessarily drawn to scale.
10. A cover plate assembly; 20. a display component; 30. a pattern region; 40. a non-pattern region; 110. a first substrate; 120. an optical adhesive layer; 121. a first optical adhesive layer; 122. a second optical adhesive layer; 130. a second substrate; 140. a third optical adhesive layer; 150. an elastic sleeve.
Detailed Description
Embodiments of the present application will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.
In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but is within the tolerance of the error.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.
In one aspect, referring to fig. 1, an embodiment of the present application provides a cover plate assembly 10 including a first substrate 110 and an optical adhesive layer 120. The optical adhesive layer 120 is disposed on one surface of the first substrate 110. The optical adhesive layer 120 includes a first optical adhesive layer 121 and a second optical adhesive layer 122, and the second optical adhesive layer 122 has a predetermined pattern. The first optical adhesive layer 121 at least partially surrounds the second optical adhesive layer 122, and a predetermined refractive index difference exists between the first optical adhesive layer 121 and the second optical adhesive layer 122 so as to display a predetermined pattern within a predetermined angle range.
The first substrate 110 may be made of a material having high light transmittance, such as glass or plastic. The first substrate 110 has two surfaces, and generally has a relatively large surface size and a relatively thin thickness. The surfaces of the first substrate 110 may be flat, or one or both surfaces may be curved as desired.
The optical adhesive is a special adhesive for cementing transparent optical elements (such as lenses, screen cover plates and the like), has the characteristics of no color, transparency, high light transmittance, good cementing strength, capability of being cured at room temperature or medium temperature or under external illumination, small curing shrinkage and the like. The optical cement can be optical cement with various forms, such as liquid optical cement or solid optical cement. The liquid optical cement has a certain fluidity and forms the optical cement layer 120 after being cured on one surface of the first substrate 110. The solid optical cement has two oppositely disposed bonding surfaces, and one bonding surface of the solid optical cement is bonded on one surface of the first substrate 110 to form the optical cement layer 120.
The optical adhesive layer 120 includes a first optical adhesive layer 121 and a second optical adhesive layer 122. The first and second optical adhesive layers 121 and 122 are formed of first and second optical adhesives, respectively. The first optical adhesive layer 121 and the second optical adhesive layer 122 may each adopt an optical adhesive with a corresponding form, that is, the forms of the first optical adhesive and the second optical adhesive may be the same or different. Referring to fig. 3, after the first substrate 110 is provided with the first optical paste and the second optical paste, the first substrate is bonded to the display module 20, and an optical paste layer 120 is formed between the first substrate 110 and the display module 20.
The second optical adhesive layer 122 has a preset pattern, and the preset pattern corresponds to the logo information to be displayed, such as logo information that the display device usually desires to set, company logo or product model. The position of the second optical adhesive layer 122 on the plane of the first substrate 110 can be designed according to the display position of the mark information, for example, referring to fig. 2, the mark information is displayed in the middle of the first substrate 110 or near the corner of the first substrate 110, and is correspondingly disposed. The first optical adhesive layer 121 at least partially surrounds the second optical adhesive layer 122, for example, the first optical adhesive layer 121 partially surrounds the second optical adhesive layer 122 or the first optical adhesive layer 121 completely surrounds the second optical adhesive layer 122. For convenience of description, the optical adhesive layer 120 is divided into the pattern region 30 and the non-pattern region 40. The pattern region 30 is a region of the optical adhesive layer 120 that is covered by the second optical adhesive layer 122 in a projection manner in a direction perpendicular to the first substrate 110, and a region of the optical adhesive layer 120 other than the pattern region 30 is a non-pattern region 40.
The cover assembly 10 is attached to the display assembly 20, such as by a first optical glue and a second optical glue, when disposed on the display assembly 20. The optical adhesive layer 120 is colorless and transparent, and has high light transmittance. When the display assembly 20 operates, light of the display assembly 20 can directly pass through the optical adhesive layer 120, so that display contents of a working interface of the display assembly 20, such as a road navigation interface and a music playing interface of a display screen, are not shielded.
When the display assembly 20 stops operating or the brightness of the display assembly 20 is low, the predetermined pattern corresponding to the second optical adhesive layer 122 may be observed. It should be noted that, if not specifically stated, the following observation of the preset pattern at each viewing angle is performed when the display module 20 stops operating or when the brightness of the display module 20 is low.
When light is obliquely incident from one medium into another medium, refraction and reflection occur at the interface of the two media. Under a normal viewing angle, i.e. a viewing angle perpendicular to the plane of the first substrate 110, the incident light is incident in a direction perpendicular to the plane of the first substrate 110. The refractive index between the first optical adhesive layer 121 and the second optical adhesive layer 122 has a predetermined refractive index difference, which is relatively small. Accordingly, the difference in reflectivity between the patterned area 30 and the non-patterned area 40 is small, and the difference between the patterned area 30 and the non-patterned area 40 is hardly recognized by the eyes of the observer, and the predetermined pattern is hardly visible, so that the interface of the sheathing plate assembly 10 is neat, and interference of the predetermined pattern with the observer may be reduced. The specific value of the preset refractive index difference may not be limited as long as the corresponding reflectivity difference is small and almost cannot be distinguished by human eyes.
Under the side view angle, see fig. 4, the angle of view is at an angle to the perpendicular direction of the plane of the first cover plate. In the non-pattern region 40, the incident light sequentially passes through the first substrate 110 and the first adhesive layer, and is reflected at the interface between the first substrate 110 and the first adhesive layer, and is reflected at the surface of the first adhesive layer away from the first substrate 110. In the pattern region 30, the incident light sequentially passes through the first substrate 110, the first adhesive layer and the second adhesive layer, and is reflected at the interface between the first substrate 110 and the first adhesive layer, the interface between the first adhesive layer and the second adhesive layer, and the surface of the second adhesive layer away from the first substrate 110. The difference in reflectance R2 at the side viewing angle of the pattern region 30 and the reflectance R1 at the side viewing angle of the non-pattern region 40 increases compared to the reflectance difference at the front viewing angle, and the reflectance difference increases accordingly as the angle of the side viewing angle increases. When the reflectance difference increases to a certain degree, that is, when the angle of the side view angle reaches a preset angle, the difference between the pattern region 30 and the non-pattern region 40 can be recognized by the eyes of the observer, and thus the preset pattern can be observed. It will be understood, of course, that different observers will observe different angles of side viewing of the predetermined pattern due to differences in the degree to which their eyes are sensitive to light.
According to the cover plate assembly 10 of the embodiment of the present application, the predetermined pattern of the second optical adhesive layer 122 corresponds to the logo information to be displayed. The cover plate assembly 10 is used for a display screen, and when the display screen operates, the first optical adhesive layer 121 and the second optical adhesive layer 122 do not shield the display information of the display screen. After the display screen stops operating, under the condition that the difference between the preset refractive indexes of the first optical adhesive layer 121 and the second optical adhesive layer 122 is observed at a front viewing angle relative to the cover plate assembly 10, the difference between the reflectivity of the light ray in the area corresponding to the first optical adhesive layer 121 and the reflectivity of the light ray in the area corresponding to the second optical adhesive layer 122 is small, and the mark information of the second optical adhesive layer 122 is hardly visible. Under the preset angle range, if the difference value of the reflectivity is increased when the mark is viewed at a side viewing angle, the mark information can be observed. The cover plate assembly 10 of the embodiment of the application can display the mark information in the corresponding area of the display screen, and meanwhile, the effective display area of the display screen is not affected.
In one embodiment, referring to fig. 5 to 8, the cover plate assembly 10 further includes a second substrate 130, and the second substrate 130 is disposed on a side of the optical adhesive layer 120 away from the first substrate 110.
The second substrate 130 may be made of a material having high light transmittance such as glass or plastic. The optical adhesive is adhered between the first substrate 110 and the second substrate 130 to form the optical adhesive layer 120. The cover member 10 is stable in shape, and the cover member 10 can be mounted to the display member 20 when necessary. The cover assembly 10 may be mounted on the display assembly 20 in a more versatile manner, and may be adhered to a surface of the first substrate 110 or the second substrate 130, which is far away from the optical adhesive layer 120, as shown in fig. 9 and 12, for example, a third optical adhesive (liquid optical adhesive or solid optical adhesive) is disposed on the surface to form a third optical adhesive layer 140. It is also possible to provide an external member to combine the cover member 10 and the display member 20 and to closely attach the cover member 10 and the display member 20. For example, an elastic sleeve, such as a silicone sleeve or a rubber sleeve, is provided. Referring to fig. 10, the cover assembly 10 is stacked on the display assembly 20, and an elastic sleeve surrounds the periphery of the integral structure of the cover assembly 10 and the display assembly 20, and the outer edge of the elastic sleeve presses the cover assembly 10 against the display assembly 20 by its own elasticity. As another example, a detachable frame structure is provided, the cover assembly 10 is stacked on the display assembly 20, and placed in the frame, and the frame structure is used to press the cover assembly 10 against the display assembly 20.
According to an embodiment of the present disclosure, referring to fig. 1 to 11, in a direction from the first substrate 110 to the optical adhesive layer 120, the first surface of the second optical adhesive layer 122 close to the first substrate 110 and the second surface far from the first substrate 110 are both flat surfaces.
The first surface and the second surface of second optics glue film 122 are the planishing face, therefore light gets into behind first surface and the second surface, is difficult to appear diffuse reflection at first surface and second surface, and the light propagation direction rule after the reflection, therefore the structure of the second glue film that people's eye observed is clear, and it is clear distinguishable to predetermine the pattern, and the pattern is difficult to the distortion. Moreover, the light after reflection has a regular propagation direction, the energy loss of light is less, and the second adhesive layer observed by human eyes has higher brightness, which is also beneficial to clearly seeing the preset pattern.
According to an embodiment of the present application, referring to fig. 1 to 11, the first surface and the second surface are parallel to a plane in which the first substrate 110 is located.
The first surface and the second surface of the second optical adhesive layer 122 are flat surfaces and parallel to the plane of the first substrate 110. Thus, at a normal viewing angle, light is also perpendicularly or nearly perpendicularly incident on the first and second surfaces of the second optical adhesive layer 122, and thus the difference in reflectivity between the patterned area 30 and the non-patterned area 40 is further reduced. At a positive viewing angle, the predetermined pattern is less visible, making the interface of the cover assembly 10 cleaner and less likely to interfere with a viewer.
According to an embodiment of the present application, referring to fig. 8, in a direction from the first substrate 110 to the optical adhesive layer 120, the first optical adhesive layer 121 completely surrounds the second optical adhesive layer 122.
The first optical adhesive layer 121 completely surrounds the second optical adhesive layer 122, the first optical adhesive layer 121 and the second optical adhesive layer 122 are tightly bonded, and the properties of the optical adhesive layer 120 are stable. Moreover, both surfaces of the second optical adhesive layer 122 are in contact with the first optical adhesive layer 121, but not directly in contact with the first substrate 110 or the second substrate 130. The first optical glue is coated on each corresponding surface of the first substrate 110 and/or the second substrate 130, and the surface is coated with only one kind of optical glue, so that the bonding strength of each part is basically the same, the stress of each part is more uniform, and the stress concentration is avoided.
According to an embodiment of the present application, in a direction from the first substrate 110 to the optical adhesive layer 120, at least one of the first surface of the second optical adhesive layer 122 close to the second substrate 130 and the second surface close to the first substrate 110 is not surrounded by the first optical adhesive layer 121.
At least one of the first surface and the second surface of the second optical adhesive layer 122 is exposed outside the first optical adhesive layer 121 in a direction from the first substrate 110 to the optical adhesive layer 120. The method specifically comprises the following three modes:
mode 1: referring to fig. 7, the first surface is exposed outside the first optical adhesive layer 121, the first surface is adhered to the first substrate 110, and the second surface is in contact with the first optical adhesive layer 121.
Mode 2: referring to fig. 6, the first surface contacts the first optical adhesive layer 121, and the second surface is adhered to the second substrate 130 or the display module 20.
Mode 3: referring to fig. 9, the first surface is adhered to the first substrate 110, and the second surface is adhered to the second substrate 130 or the display element 20.
In the three modes, in the pattern region 30, the number of media through which light propagates is relatively small, the number of times of refraction and reflection is relatively small, the propagation path is controllable, and the energy loss of light is relatively small, so that the preset pattern is displayed more clearly at the side viewing angle.
According to an embodiment of the present application, referring to fig. 9, neither the first surface nor the second surface of the second optical glue layer 122 is surrounded by the first optical glue layer 121.
The first surface and the second surface of the second optical adhesive layer 122 are both exposed outside the first optical adhesive layer 121, the first surface is in contact with the first optical adhesive layer 121, and the second surface is adhered to the second substrate 130 or the display module 20. The second optical adhesive layer 122 is disposed in the manner described above in the embodiment 3. In this way, the number of media for light propagation is less, the number of times of refraction and reflection is less, the propagation light path is more controllable, and the energy loss of light is less, so that the preset pattern is displayed more clearly under the side viewing angle. In addition, the structure of the cover plate assembly 10 in the pattern region 30 is simple, the cover plate assembly is directly arranged on the second substrate 130 on the first substrate 110, and the production process method is simple.
According to an embodiment of the present application, the difference between the preset refractive indexes of the first optical glue layer 121 and the second optical glue layer 122 is greater than or equal to 0.05.
Under this condition, the difference in reflectivity between the patterned area 30 and the non-patterned area 40 at the normal viewing angle is small, and the difference between the patterned area 30 and the non-patterned area 40 is hardly recognized by the eyes of the observer, and the predetermined pattern is hardly visible at this time, so that the interface of the sheathing assembly 10 is neat, and the interference of the predetermined pattern with the observer is reduced.
According to an embodiment of the present application, the refractive indices of the first and second optical glue layers 121 and 122 are each in the range of 1.4-1.55.
Under the condition, the preset patterns of the first optical adhesive layer 121 and the second optical adhesive layer 122 in the refractive index range are clearly displayed, and the mark information can be clearly observed.
According to an embodiment of the present disclosure, the first substrate 110 is a glass substrate having a thickness of 0.01 to 0.1 mm.
When the cover assembly 10 does not include the second substrate 130, the first substrate 110 is adhered to the display assembly 20 after the first optical adhesive and the second optical adhesive are disposed thereon. When the cover plate assembly 10 further includes the second substrate 130, the thickness of the second substrate 130 may be set to be greater than or equal to the thickness of the first substrate 110. And the second substrate 130 is mounted on the display assembly 20 in the manner as previously described, such as by gluing or by external assembly. The first substrate 110 is an outermost layer on the opposite display assembly 20. The first substrate 110 is a glass substrate with a thickness of 0.01-0.1 mm, and the glass substrate with the thickness is thin, and has good light transmittance and good pattern display effect. In addition, when the thickness of the second substrate 130 is greater than or equal to the thickness of the first substrate 110, the first substrate 110 can be supported, and the strength of the cover plate assembly is enhanced.
According to an embodiment of the present application, the surface of the first substrate 110 or the second substrate 130 has at least one of an anti-fingerprint layer, an anti-reflection layer, and an anti-glare layer.
One of the first substrate 110 or the second substrate 130 may be mounted on the display assembly 20 in the manner described above, such as by being attached or by an external component. In this case, the substrate may serve as a support, and the surface of the other substrate facing away from the optical adhesive layer 120 is opposite to the outermost layer of the display module 20, so that a functional layer may be disposed on the surface of the outermost layer.
Taking the second substrate 130 as an example for being mounted on the display assembly 20, a functional layer, such as one or more of an AF (Anti-fingerprint) layer, an AR (Anti-reflection) layer, and an AG (Anti-glare) layer, is disposed on the outermost surface of the first substrate 110. The anti-fingerprint layer can reduce the attachment of fingerprints and various stains and improve the wiping and cleaning capability. The anti-reflection layer can increase the transmittance of the first substrate 110 and reduce the reflectivity. The anti-glare layer may reduce the probability of glare occurring in the first substrate 110. The surface of the first substrate 110 may be provided with corresponding functional layers according to design requirements.
When the first substrate 110 is made of ultra-thin glass, it is, for example, a glass substrate with a thickness of 0.01 to 0.1 mm. Because the ultrathin glass is flexible, functional layers such as AF, AR, AG and the like can be easily formed on the surface of the outermost layer of the ultrathin glass directly or in a roll-to-roll mode, and the functional layers are more convenient to form. At this time, the thickness of the second substrate 130 may also be set to be greater than that of the first substrate 110, so that the second substrate 130 forms a better support for the first substrate 110, and the strength of the cover plate assembly 10 is improved.
According to an embodiment of the present application, the anti-glare particles are included in the first optical adhesive layer 121.
The second optical adhesive layer 122 has a predetermined pattern, and the pattern is mainly displayed by the second optical adhesive layer 122. If the anti-glare particles are disposed in the second optical adhesive layer 122, the pattern is fogged, which results in unclear display. Therefore, the anti-glare particles disposed in the first optical adhesive layer 121 can reduce the probability of glare of the cover plate assembly 10, and simultaneously ensure that the pattern of the second optical adhesive layer 122 is clearly displayed and has high identification degree.
In another aspect, the present embodiment provides a method for preparing a cover plate assembly 10, including the following steps:
a first optical adhesive layer 121 and a patterned second optical adhesive layer 122 are formed on the first substrate 110 to form an optical adhesive layer 120, the second optical adhesive layer 122 has a predetermined pattern, the first optical adhesive layer 121 at least partially surrounds the second optical adhesive layer 122, and a predetermined refractive index difference exists between the first optical adhesive layer 121 and the second optical adhesive layer 122 to show the predetermined pattern within a predetermined angle range.
The first substrate 110 is disposed with the first optical adhesive layer 121 and the patterned second optical adhesive layer 122, such that the optical adhesive layer 120 is formed on the first substrate 110, and the cover plate assembly 10 is manufactured. The cover plate assembly 10 is simple in production process and high in yield.
According to an embodiment of the present disclosure, the forming of the first optical adhesive layer 121 and the patterned second optical adhesive layer 122 on the first substrate 110 includes: forming a patterned second optical adhesive layer 122 on the first substrate 110 through a mask; and forming a first optical adhesive layer 121 on the first substrate 110.
When the second optical glue is liquid optical glue, the patterned second optical glue layer 122 may be prepared through a mask. The mask plate is provided with holes corresponding to the preset patterns. The second optical adhesive is coated or sprayed, and forms a second optical adhesive layer 122 with a preset pattern after being cured through the holes of the mask plate. Then, the first optical adhesive layer 121 is disposed, and the first optical adhesive layer 121 partially surrounds or completely surrounds the second optical adhesive layer 122. It is understood that, when the cover plate assembly 10 further includes the second substrate 130, the second substrate 130 can be directly adhered to the first optical adhesive layer 121 after the first optical adhesive layer 121 is disposed.
The preparation method of the cover plate assembly 10 is suitable for the second optical cement being liquid optical cement, and has the advantages of simple production process and high yield.
According to an embodiment of the present disclosure, the forming of the first optical adhesive layer 121 and the patterned second optical adhesive layer 122 on the first substrate 110 includes: prefabricating a second optical adhesive layer 122 with a preset pattern; attaching the second optical adhesive layer 122 to the first substrate 110; and forming a first optical adhesive layer 121 on the first substrate 110.
When the second optical adhesive is a solid optical adhesive, the second optical adhesive is cut into a predetermined pattern shape in advance and attached to the first substrate 110. Then, the first optical adhesive layer 121 is disposed, and the first optical adhesive layer 121 partially or completely surrounds the second optical adhesive layer 122. It is understood that, when the cover plate assembly 10 further includes the second substrate 130, the second substrate 130 can be directly adhered to the first optical adhesive layer 121 after the first optical adhesive layer 121 is disposed.
The preparation method of the cover plate assembly 10 is suitable for the second optical cement being solid optical cement, and the production process is simple and the rate of finished products is high.
In another aspect, the present disclosure provides a display device, which includes a display module 20 and the above-mentioned cover module 10, wherein the cover module 10 is fixed to the display module 20.
Referring to the above description, the cover member 10 may be fixed to the display member 20 by means of adhesion, by means of an external member, or the like. Due to the adoption of the cover plate assembly 10, when the display assembly 20 operates, the display information in the display screen of the display assembly 20 can be normally displayed. When the display module 20 stops operating or the brightness of the display module 20 is low, the predetermined pattern of the second optical adhesive layer 122 corresponding to the logo information can be observed within a predetermined angle range, such as a side view. The display device can better display the sign information while the effective display area of the display screen is not affected.
While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and particularly, features described in connection with the embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.
Claims (16)
1. A cover plate assembly, comprising:
a first substrate;
the optical adhesive layer is positioned on one surface of the first substrate and comprises a first optical adhesive layer and a second optical adhesive layer, and the second optical adhesive layer is provided with a preset pattern; the first optical adhesive layer at least partially surrounds the second optical adhesive layer, a preset refractive index difference value is arranged between the first optical adhesive layer and the second optical adhesive layer, the reflectivity difference value between the first optical adhesive layer and the second optical adhesive layer is increased along with the increase of the side viewing angle so as to display the preset pattern within a preset angle range, and the preset angle is the side viewing angle when the preset pattern is displayed.
2. The cover assembly of claim 1, further comprising a second substrate disposed on a side of the optical glue layer remote from the first substrate.
3. The cover plate assembly according to claim 1, wherein the first surface of the second optical adhesive layer close to the first substrate and the second surface far from the first substrate are flat surfaces in the direction from the first substrate to the optical adhesive layer.
4. The lid assembly of claim 3, wherein the first surface and the second surface are both parallel to a plane in which the first substrate lies.
5. The cover assembly of claim 1, wherein the first layer of optical glue completely surrounds the second layer of optical glue in a direction from the first substrate to the layer of optical glue.
6. The cover assembly of claim 1, wherein at least one of the first surface of the second optical glue layer adjacent to the first substrate and the second surface of the second optical glue layer remote from the first substrate is not surrounded by the first optical glue layer in the direction from the first substrate to the optical glue layer.
7. The cover assembly of claim 6, wherein neither the first nor the second surface of the second optical cement layer is surrounded by the first optical cement layer.
8. The cover assembly of claim 1, wherein the difference in the predetermined refractive indices of the first optical glue layer and the second optical glue layer is greater than or equal to 0.05.
9. The cover assembly of claim 7, wherein the refractive indices of the first optical glue layer and the second optical glue layer are each in the range of 1.4-1.55.
10. The cover plate assembly according to claim 1, wherein the first substrate is a glass substrate having a thickness of 0.01 to 0.1 mm.
11. The cover plate assembly of claim 2, wherein the surface of the first or second substrate has at least one of an anti-fingerprint layer, an anti-reflective anti-reflection layer, and an anti-glare layer.
12. The cover assembly according to any one of claims 1 to 11, wherein the first layer of optical glue comprises anti-glare particles therein.
13. A method of making a cover plate assembly, comprising the steps of:
the method comprises the steps of forming a first optical adhesive layer and a patterned second optical adhesive layer on a first substrate to form the optical adhesive layer, wherein the second optical adhesive layer is provided with a preset pattern, the first optical adhesive layer at least partially surrounds the second optical adhesive layer, a preset refractive index difference value is formed between the first optical adhesive layer and the second optical adhesive layer, the reflectivity difference value between the first optical adhesive layer and the second optical adhesive layer is increased along with the increase of a side viewing angle to display the preset pattern within a preset angle range, and the preset angle is the side viewing angle when the preset pattern is displayed.
14. The method of claim 13, wherein the forming the first optical glue layer and the patterned second optical glue layer on the first substrate comprises:
forming a second patterned optical adhesive layer on the first substrate through a mask plate; and
and forming a first optical adhesive layer on the first substrate.
15. The method of claim 13, wherein the forming the first optical adhesive layer and the patterned second optical adhesive layer on the first substrate comprises:
prefabricating a second optical adhesive layer with a preset pattern;
attaching the second optical adhesive layer to the first substrate; and
and forming a first optical adhesive layer on the first substrate.
16. A display device comprising a display module and the cover plate assembly of any one of claims 1 to 12, wherein the cover plate assembly is secured to the display module.
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| CN202110217989.1A CN113035061B (en) | 2021-02-26 | 2021-02-26 | Cover plate assembly, preparation method thereof and display device |
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| CN202110217989.1A CN113035061B (en) | 2021-02-26 | 2021-02-26 | Cover plate assembly, preparation method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2532500Y (en) * | 2002-06-05 | 2003-01-22 | 宗威企业有限公司 | Glu film structure capable of display multi-pattern |
| CN103980510A (en) * | 2014-04-17 | 2014-08-13 | 华东师范大学 | Colloidal crystal print with invisible patterns appearing by deformation and its preparation method and use |
| CN205818770U (en) * | 2016-05-27 | 2016-12-21 | 苏州苏大维格光电科技股份有限公司 | Decorating film and ambetti |
| CN207352309U (en) * | 2017-07-10 | 2018-05-11 | 深圳市志凌伟业技术股份有限公司 | A kind of touch-control display module |
| JP7334414B2 (en) * | 2018-03-20 | 2023-08-29 | 凸版印刷株式会社 | Optical elements, transfer foils, and authenticators |
| CN109782492B (en) * | 2019-04-04 | 2022-05-13 | 业成科技（成都）有限公司 | Light source module and display device |
| CN111951690A (en) * | 2020-08-19 | 2020-11-17 | 京东方科技集团股份有限公司 | Display module, preparation method and display device |
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