CN111697045A - Optical adhesive layer, preparation method thereof and display device - Google Patents
Optical adhesive layer, preparation method thereof and display device Download PDFInfo
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- CN111697045A CN111697045A CN202010736998.7A CN202010736998A CN111697045A CN 111697045 A CN111697045 A CN 111697045A CN 202010736998 A CN202010736998 A CN 202010736998A CN 111697045 A CN111697045 A CN 111697045A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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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
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Abstract
An optical adhesive layer, a preparation method thereof and a display device are provided, wherein the optical adhesive layer comprises: transparent first glue film and non-transparent second glue film, first glue film is provided with the through-hole in setting for the region, the second glue film sets up in the through-hole. In this embodiment, through setting up non-transparent second glue film in the settlement region, when forming the via hole at the second glue film, non-transparent second glue film can shelter from during the light incident via hole that comes from first glue film, avoids the light leak.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to an optical adhesive layer, a method for manufacturing the optical adhesive layer, and a display device.
Background
With the upgrading and upgrading speed of electronic devices being accelerated, the requirements for high integration and high performance of electronic devices such as mobile phones and watches, which use Organic Light-Emitting Diode (OLED) screens as display components, are higher and higher, and the requirements for volume and size are smaller and smaller, and the development of full-screen is also a trend of display screens such as mobile phones and watches. Punching in effective display Area (Active Area, AA) is the mode that realizes improving the screen and accounts for the ratio, and the aperture of effective display Area hole (AAhole) will be as little as possible, but less aperture makes the module meet various difficulties, for example, the light leak around the hole seriously influences the use of display effect and hole of making a video recording. It is conventional to apply black ink at the edge of the AA hole, but as AA holes get smaller, the ink application process is more demanding and the risk of foreign matter remaining is higher.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides an optical adhesive layer, a preparation method of the optical adhesive layer and a display device.
In one aspect, an embodiment of the present application provides an optical adhesive layer, including: transparent first glue film and non-transparent second glue film, first glue film is provided with the through-hole in setting for the region, the second glue film sets up in the through-hole.
In an exemplary embodiment, a thickness of the second adhesive layer along an opening direction of the through hole is consistent with a hole depth of the through hole.
In an exemplary embodiment, the second adhesive layer is attached to the sidewall of the through hole.
In an exemplary embodiment, the second adhesive layer is not in contact with the sidewall of the through hole, and a release film is disposed on at least one side of the first adhesive layer and the second adhesive layer.
In an exemplary embodiment, the hardness of the second glue layer is greater than the hardness of the first glue layer.
In an exemplary embodiment, along the opening direction of the through hole, the second glue layer includes a first sub-layer, a second sub-layer and a third sub-layer, which are sequentially disposed, and the hardness of the second sub-layer is greater than the hardness of the first sub-layer and the hardness of the third sub-layer.
In an exemplary embodiment, the through-hole has a diameter of 2.4 mm to 5.25 mm.
In another aspect, an embodiment of the present application provides a method for preparing an optical adhesive layer, including:
forming a transparent first adhesive layer, wherein the first adhesive layer is provided with a through hole in a set area;
and forming a non-transparent second adhesive layer, and arranging the second adhesive layer in the through hole.
In an exemplary embodiment, a thickness of the second adhesive layer along an opening direction of the through hole is consistent with a hole depth of the through hole.
In an exemplary embodiment, the disposing the second glue layer in the through hole includes: and attaching the second adhesive layer to the side wall of the through hole.
In an exemplary embodiment, forming the non-transparent second glue layer includes:
the method comprises the steps of sequentially forming a first sublayer, a second sublayer and a third sublayer, wherein the hardness of the second sublayer is greater than that of the first sublayer and that of the third sublayer.
In another aspect, an embodiment of the present application provides a display device, including: display panel, first optics glue film, touch panel that set gradually, wherein, display panel is provided with first through-hole, first optics glue film is provided with the second through-hole, touch panel is provided with the third through-hole, first through-hole, second through-hole, third through-hole run through and form the via hole, the above-mentioned embodiment of first optics glue film, the second through-hole is in display panel's orthographic projection is located the second glue film of first optics glue film is in inside display panel's orthographic projection.
In an exemplary embodiment, the display device further includes:
the touch panel comprises a polaroid, a second optical adhesive layer and a cover plate, wherein the polaroid is arranged on one side of the touch panel, which is far away from the display panel, the second optical adhesive layer is arranged on one side of the polaroid, which is far away from the display panel, and the cover plate is arranged on one side of the second optical adhesive layer, which is far away from the display panel; in the optical adhesive layer of the second optical adhesive layer in the above embodiment, the polarizer is provided with a fourth through hole, the second optical adhesive layer is provided with a fifth through hole, and the fourth through hole and the fifth through hole penetrate through the third through hole to form a part of the through hole; the orthographic projection of the fifth through hole on the display panel is located inside the orthographic projection of the second glue layer of the second optical glue layer on the display panel.
In an exemplary embodiment, the display device further includes a camera, and an orthogonal projection of the camera is located inside an orthogonal projection of the via hole on a plane parallel to the display panel.
The embodiment of the application provides an optical adhesive layer, include: transparent first glue film and non-transparent second glue film, first glue film is provided with the through-hole in setting for the region, the second glue film sets up in the through-hole. In this embodiment, through setting up non-transparent second glue film in the settlement region, when forming the via hole at the second glue film, non-transparent second glue film can shelter from during the light incident via hole that comes from first glue film, avoids the light leak.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic view of a display device according to an embodiment;
FIG. 2 is a schematic cross-sectional view of an optical adhesive layer according to an embodiment of the present disclosure;
FIG. 3 is a top view of an optical adhesive layer provided in an embodiment of the present disclosure;
FIG. 4 is a schematic view of an opening of an optical adhesive layer according to an embodiment;
fig. 5 is a flowchart of a method for manufacturing an optical adhesive layer according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a display device according to an embodiment of the present disclosure;
FIG. 7 is a schematic view of a display device according to another embodiment;
FIG. 8 is a schematic view illustrating a display device according to an embodiment;
FIG. 9 is a schematic view illustrating a heat dissipation film according to an embodiment;
fig. 10 is a schematic view illustrating a first optical adhesive layer, a touch panel, and a polarizer according to an embodiment of the present disclosure;
FIG. 11 is a schematic diagram of forming holes in the first optical adhesive layer, the touch panel and the polarizer;
fig. 12 is a schematic view of the second optical adhesive layer after being attached.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present application, the embodiments and features of the embodiments may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 is a schematic diagram of a display device according to an embodiment. The display device comprises a heat dissipation film (SCF)1, a display panel 2, a first optical adhesive layer 3, a touch panel 4, a Polarizer (POL) 5, a second optical adhesive layer 6 and a cover plate 7 which are sequentially arranged, wherein an annular shielding layer 71 is arranged on one side of the cover plate 7, which is close to the second optical adhesive layer 6. Through holes are formed in the display panel 2, the first optical adhesive layer 3, the touch panel 4, the polarizer 5 and the second optical adhesive layer 6, light can be transmitted to the camera 8 through the light-transmitting area in the middle of the shielding layer 71, and the shielding layer 71 can shield stray light from entering the camera 8.
The first optical adhesive layer 3 becomes a light leakage channel at the side of the via hole. If the distance from the edge VA of the shielding layer 71 to the edge of the first optical adhesive layer 3 is small, the edge of the first optical adhesive layer 3 close to the via hole can be seen to generate bright light when being observed from the AA area, and the phenomenon seriously affects the image pickup effect of the image pickup hole. In addition, the light emitted from the display panel 2 can be transmitted in the first optical adhesive layer 3 or emitted from the side surface into the via hole through multiple refractions. In one technical scheme, the light leakage of the via hole is improved by adopting methods of coating ink on the side wall of the via hole or filling foam around the camera 8. When the side wall of the via hole is coated with ink, the coating layer is thin, so that light leakage cannot be effectively blocked. When filling the bubble cotton around camera 8, when camera 8 focus was removed, there was camera 8 and the cotton risk of bumping of bubble, also can increase the via hole frame simultaneously, reduces user experience.
Fig. 2 is a schematic cross-sectional view of an optical adhesive layer according to an embodiment of the present disclosure. Fig. 3 is a top view of an optical adhesive layer provided in an embodiment of the present application. As shown in fig. 2, the embodiment of the present application provides an optical adhesive layer 9, the optical adhesive layer 9 may be used to encapsulate a display panel, the optical adhesive layer 9 includes a transparent first adhesive layer 91 and a non-transparent second adhesive layer 92, the first adhesive layer 91 is provided with a through hole 10 in a set area, the second adhesive layer 92 is disposed in the through hole 10, the position of the through hole 10 may correspond to the position of the opening of the display substrate, and on a plane parallel to the display substrate, the orthographic projection of the opening of the display substrate is located in the orthographic projection of the through hole 10. As shown in fig. 3, the cross-section of the through-hole 10 may be circular in a plane parallel to the optical glue layer. However, the embodiments of the present application are not limited thereto, and may have other shapes. The shape of the cross section of the second adhesive layer 92 may be uniform with the through-hole 10 in a plane parallel to the optical adhesive layers, or may be non-uniform.
In an exemplary embodiment, the thickness of the second adhesive layer 92 along the opening direction of the through hole 10 is consistent with the hole depth of the through hole 10. I.e. the thickness of the second glue layer 92 corresponds to the thickness of the first glue layer 91.
The optical adhesive layer provided by the embodiment is provided with the non-transparent second adhesive layer in the set area, and when the via hole is formed in the second adhesive layer, the non-transparent second adhesive layer can shield light from the first adhesive layer from being incident into the via hole, so that light leakage is avoided.
In an exemplary embodiment, the setting region is, for example, a region corresponding to an opening region of the display panel.
In an exemplary embodiment, the first glue layer 91 is, for example, an Optical Clear Adhesive (OCA), and may include an acrylic polymer gel. The OCA adhesive is one of important raw materials of the touch screen, and is a double-sided adhesive tape without a base material. Utilize OCA to glue can realize touch panel 4 and display panel 2's full laminating to eliminate the air bed between touch-sensitive screen and the display screen, thereby improve display effect, and isolated dust and steam.
In an exemplary embodiment, the second adhesive layer 92 is, for example, a black or dark colored tape. The black or dark adhesive tape can be selected from various types, and compared with OCA adhesive, the requirement is low, and the price is low.
In an exemplary embodiment, the second adhesive layer is, for example, a PET (Polyethylene terephthalate) adhesive tape. However, the embodiments of the present application are not limited thereto, and may be other types of tapes.
In one embodiment, the hardness of the second adhesive layer 92 may be greater than the hardness of the first adhesive layer 91. Compared with a material with low hardness, a material with high hardness has smaller glue overflow and deformation when being perforated, so that the scheme provided by the embodiment can reduce the glue overflow and the hole deformation degree, and can reduce or cancel the glue overflow area when being applied to a display device, thereby reducing the via hole frame and improving the screen occupation ratio.
In an exemplary embodiment, the shape of the through hole 10 may be a circle, a square, a hexagon, etc., which is not limited in the embodiments of the present application.
In an exemplary embodiment, the diameter of the through hole may be about 2.4 mm to 5.25 mm, but the embodiment of the present application is not limited thereto and may be set as needed. Conventional OCA pores have diameters of about 2.5mm to 5 mm. In the embodiment, a larger through hole can be used compared with the conventional scheme, and the smaller the through hole is, the more easily deformation and glue overflow are generated, so that the larger through hole is used, and the glue overflow at the edge of the hole and poor deformation of the hole caused by too small hole can be effectively reduced.
In an exemplary embodiment, the size of the second adhesive layer 92 may be the same as the size of the through hole 10, or the size of the second adhesive layer 92 may not be the same as the size of the through hole 10, and the second adhesive layer 92 is smaller than the through hole 10. When the size of the second adhesive layer 92 is the same as that of the through hole 10, the second adhesive layer 92 is attached to the sidewall of the through hole 10. When the size of the second adhesive layer 92 is different from the size of the through hole 10, the second adhesive layer 92 may be in non-contact with the sidewall of the through hole 10, and at least one side of the first adhesive layer 91 and the second adhesive layer 92 is provided with a release film, that is, the first adhesive layer 91 and the second adhesive layer 92 are not in contact with each other and are both disposed on the release film.
In an exemplary embodiment, release films may be disposed on both sides of the optical adhesive layer 9, a first release film is disposed on a lower surface of the optical adhesive layer 9, and a second release film is disposed on an upper surface of the optical adhesive layer 9, so as to protect the unused optical adhesive layer 9, thereby preventing the optical adhesive layer 9 from failing. When the optical adhesive layer 9 needs to be used, the first release film and the second release film can be removed to attach the touch panel 4 and the display panel 2 together, so that the attachment performance of the optical adhesive layer 9 is improved.
The first release film and the second release film can be both PE (Polyethylene) release films, and are nontoxic, tasteless and good in chemical stability. Of course, in addition to using PE release films as the first release film and the second release film, PET (Polyethylene terephthalate) release films or the like may be used as the first release film and the second release film.
In an exemplary embodiment, the second adhesive layer 92 may have a single layer structure, or may have a multi-layer structure. In an exemplary embodiment, along the opening direction of the through hole 10, the second glue layer 92 includes a first sub-layer, a second sub-layer and a third sub-layer, which are sequentially disposed, and the hardness of the second sub-layer is greater than the hardness of the first sub-layer and the hardness of the third sub-layer. For example, the first and third sub-layers may be made of a soft gel material, while the second sub-layer may be made of a rigid non-gel material. In the solution provided in this embodiment, when the second adhesive layer 92 is formed with the hole, since the hardness of the second sub-layer is high, and the material with high hardness is smaller than the material with low hardness, the overflow of the adhesive is less and the deformation is less when the hole is formed, so that the solution provided in this embodiment can reduce the overflow of the adhesive and reduce the deformation of the hole compared to the soft adhesive structure shown in fig. 1. In addition, as the glue overflow is less, the glue overflow area is not required to be reserved, the via hole frame can be reduced, and the screen occupation ratio is improved. The first and third sub-layers are for example acrylic polymer gel and the second sub-layer is for example PET or Polyimide (PI).
In other embodiments, the second adhesive layer may have other structures. For example, there may be more layers, etc.
Fig. 4 is a schematic diagram of the optical adhesive layer after being perforated. As shown in fig. 4, a through hole 94 is formed in the second adhesive layer 92 of the optical adhesive layer, and a non-transparent annular shielding portion 93 is present around the through hole 94, that is, a portion of the second adhesive layer 92 remaining after the through hole 94 is formed. The annular shielding portion 93 can shield the light from the first adhesive layer 91 from entering the through hole 94. When this optical adhesive layer was applied to the display substrate, can avoid the light from first glue film 91 to get into the camera, improve the shooting effect, promote user experience. In an exemplary embodiment, the difference between the diameter of the outer ring and the diameter of the inner ring of the annular shielding portion 93 may be greater than 0.2mm, but the embodiment of the present application is not limited thereto, and the ring of the annular shielding portion 93 may be sized according to the shielding requirement.
Fig. 5 is a flowchart of a method for manufacturing an optical adhesive layer according to an embodiment of the present disclosure. As shown in fig. 5, the method for preparing an optical adhesive layer provided in the embodiment of the present application includes:
In an exemplary embodiment, a thickness of the second adhesive layer along an opening direction of the through hole is consistent with a hole depth of the through hole.
In an exemplary embodiment, the disposing the second glue layer in the through hole includes: and attaching the second adhesive layer to the side wall of the through hole.
In an exemplary embodiment, the hardness of the second glue layer is greater than the hardness of the first glue layer. When the material with high hardness is perforated, glue overflow and deformation are smaller, so that the scheme provided by the embodiment can reduce the glue overflow and the deformation degree of the holes.
In an exemplary embodiment, the forming the non-transparent second glue layer includes:
the method comprises the steps of sequentially forming a first sublayer, a second sublayer and a third sublayer, wherein the hardness of the second sublayer is greater than that of the first sublayer and that of the third sublayer.
According to the preparation method of the optical adhesive layer provided by the embodiment, the non-transparent second adhesive layer is arranged in the set area, and when the via hole is formed in the second adhesive layer, the non-transparent second adhesive layer can shield light from the first adhesive layer from being incident into the via hole, so that light leakage is avoided. In one embodiment, the method for manufacturing the optical adhesive layer provided by this embodiment is simpler and more convenient to implement, and the shape of the non-transparent portion is easy to control, and the cost is lower compared with the method for manufacturing the integrally formed optical adhesive layer.
Fig. 6 is a schematic view of a display device according to an embodiment of the present disclosure. As shown in fig. 6, the display substrate provided in the embodiment of the present application includes: display panel 2, first optical adhesive layer 3, touch panel 4 that set gradually, wherein, display panel 2 is provided with first through-hole, first optical adhesive layer 3 is provided with the second through-hole, touch panel 4 is provided with the third through-hole, first through-hole, second through-hole, third through-hole run through and form via hole 11, and via hole 11 runs through promptly display substrate 2 first optical adhesive layer 3 with touch panel 4, first optical adhesive layer 3 is above-mentioned embodiment optical adhesive layer (shown in fig. 2), the optical adhesive layer that includes first adhesive layer 91 and second adhesive layer 92 promptly, just the second through-hole is in display panel 2's orthographic projection is located second adhesive layer 92 of first optical adhesive layer 3 is in inside display panel 2's orthographic projection. Namely, the second through hole is formed in the second adhesive layer 92 of the first optical adhesive layer 3, and the annular shielding portion 93 surrounding the second through hole is left after the second adhesive layer 92 is punched. According to the scheme provided by the embodiment, the annular shielding part 93 shields the light entering the first optical adhesive layer 3, so that the light entering the via hole 11 is prevented, and the light source effect of the camera hole caused by light leakage is reduced. In addition, the problems of foreign matters left by the scheme of inking the hole edge and preventing the light leakage and the difficulty of the coating process can be effectively avoided.
In one embodiment, the hardness of the second adhesive layer is greater than the hardness of the first adhesive layer. When the material with high hardness is perforated, glue overflow and deformation are smaller, so that the scheme provided by the embodiment can reduce the glue overflow and the deformation degree of the holes. In addition, in the process of preparing the display device, the conventional first optical adhesive layer material has no hole, laser cutting and punching are performed after the first optical adhesive layer material is attached to the touch panel and the polarizer, and glue overflow at the edge of the optical adhesive layer can be generated in the process. Therefore, the glue overflow area can be reserved, the through hole frame is large, the glue overflow area does not need to be reserved in the embodiment of the application, the through hole frame can be reduced, and the screen occupation ratio is improved.
In an exemplary embodiment, the display substrate further includes: the second optical adhesive layer 6 is arranged on one side, away from the display panel 2, of the touch panel 4, and the cover plate 7 is arranged on one side, away from the display panel 2, of the second optical adhesive layer 6; an annular shielding layer 71 is arranged on one side, close to the second optical adhesive layer 6, of the cover plate 7, a fifth through hole is formed in the second optical adhesive layer 6, and the fifth through hole penetrates through the third through hole to form a part of the through hole; the orthographic projection of the fifth through hole on the display panel 2 is positioned inside the orthographic projection of the second glue layer 92 of the second optical glue layer 6 on the display panel. In another embodiment, the second optical adhesive layer 6 may be an optical adhesive layer of other structure, such as the optical adhesive layer described in fig. 1.
In an exemplary embodiment, the display substrate may further include: the camera 8 is parallel to the plane of the display panel 2, and the orthographic projection of the camera 8 is located inside the orthographic projection of the via hole 11. The camera 8 may be disposed outside the via hole 11 or inside the via hole 11, or partially inside the via hole 11 and partially outside the via hole 11, which is not limited in this embodiment. The position of the camera 8 in fig. 6 is only illustrative and can be positioned as desired.
In an exemplary embodiment, the display substrate may further include: and the heat dissipation film 1 is arranged on one side of the display panel 2, which is far away from the first optical adhesive layer 3. The heat dissipation film 1 is provided with a through hole that penetrates the via hole 11 and constitutes a part of the via hole 11.
Fig. 7 is a schematic view of a display substrate according to another embodiment. As shown in fig. 7, the display substrate provided in this embodiment includes: the display panel comprises a display panel 2, a first optical adhesive layer 3, a touch panel 4, a polaroid 5 arranged on one side of the touch panel 4 far away from the display panel 2, a second optical adhesive layer 6 arranged on one side of the polaroid 5 far away from the display panel 2, and a cover plate 7 arranged on one side of the second optical adhesive layer 6 far away from the display panel 2, wherein the display panel, the first optical adhesive layer 3 and the touch panel 4 are sequentially arranged; and one side of the cover plate 7 close to the second optical adhesive layer 6 is provided with an annular shielding layer 71. The display panel 2 is provided with a first through hole, the first optical adhesive layer 3 is provided with a second through hole, the touch panel 4 is provided with a third through hole, the polarizer 5 is provided with a fourth through hole, the second optical adhesive layer 6 is provided with a fifth through hole, and the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole penetrate through the display panel to form a through hole; the first optical adhesive layer 3 and the second optical adhesive layer 6 are the optical adhesive layers (shown in fig. 3) described in the above embodiments, that is, the optical adhesive layers include a first adhesive layer 91 and a second adhesive layer 92, the orthographic projection of the second through hole on the display panel 2 is located inside the orthographic projection of the second adhesive layer 92 of the first optical adhesive layer 3 on the display panel 2, and the orthographic projection of the fifth through hole on the display panel 2 is located inside the orthographic projection of the second adhesive layer 92 of the second optical adhesive layer 6 on the display panel 2. Namely, the second through hole is arranged on the second adhesive layer 92 of the first optical adhesive layer 3, the fifth through hole is arranged on the second adhesive layer 92 of the second optical adhesive layer 6, and the annular shielding part 93 is left after the second adhesive layer 92 is punched. Annular shielding part 93 can shelter from the light that comes from display panel to and, come from the outer light of apron 7, can prevent the refraction at 3 edges of first optical adhesive layer, prevent the production of 3 edge light lines on first optical adhesive layer, prevent the light leak, improve the shooting effect of camera, improve user experience.
Referring to fig. 1, light from the outside may be refracted into the first optical adhesive layer 3, causing light leakage. Therefore, in the related art, the length of the shielding layer 71 needs to be increased as much as possible to shield light, which results in a larger via frame. In this embodiment, the light refracted from the outside into the first optical adhesive layer 3 is blocked by the annular blocking portion 93, so that the length of the blocking layer 71 can be reduced, and the via frame is correspondingly reduced. When the frame reduces, can use great via hole 11, and when holing, generate great via hole, the less via hole of comparison can reduce the hole edge and overflow glue and warp badly. In addition, the scheme provided by the embodiment can effectively avoid the problems of foreign matters left by the scheme of inking the hole edge and preventing the light leakage and the difficulty of the coating process.
In an exemplary embodiment, diameters of the first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole may be the same; alternatively, the diameters of the first through hole, the second through hole, the third through hole, and the fourth through hole may be the same, and the diameter of the fifth through hole may be larger than the diameter of the fourth through hole.
In an exemplary embodiment, there is provided a display device, which may be free of the touch panel 4 and the polarizer 5, that is, includes: the display panel comprises a heat dissipation film 1, a display panel 2, a first optical adhesive layer 3 and a cover plate 7. The first optical adhesive layer 3 is the optical adhesive layer shown in fig. 2. The display panel 2 and the first optical adhesive layer 3 are provided with through holes for installing the camera 8.
Fig. 8 is a flowchart of a method for manufacturing a display device according to an embodiment of the present disclosure. As shown in fig. 8, an embodiment of the present application further provides a method for manufacturing a display device, including:
In an exemplary embodiment, before the via is opened at the preset position, the preparation method further includes: attaching a polarizer to one side of the touch panel, which is far away from the display panel; the via hole also penetrates through the polaroid;
after the hole is opened in preset position, still include:
attaching a second optical adhesive layer to one side of the polarizer, which is far away from the display panel, wherein the second optical adhesive layer is the optical adhesive layer in the embodiment, and the second optical adhesive layer is provided with a fifth through hole; the fifth through hole is communicated with the through hole to form a part of the through hole, and the orthographic projection of the fifth through hole on the display panel is located in the orthographic projection of the second adhesive layer of the second optical adhesive layer on the display panel.
In this embodiment, the second optical adhesive layer has an opening before the lamination. In another embodiment, a second optical adhesive layer without holes can be used, and holes are formed after the second optical adhesive layer is attached to the polarizer. The embodiments of the present application do not limit this.
In an exemplary embodiment, the preparation method further comprises: and attaching a cover plate to one side of the second optical adhesive layer, which is far away from the display panel.
In an exemplary embodiment, before the second optical adhesive layer is attached to the cover plate on a side away from the display panel, a camera is mounted, and an orthogonal projection of the camera is located inside an orthogonal projection of the via hole on a plane parallel to the display panel.
In an exemplary embodiment, before providing a display panel, the method further includes: and a heat dissipation film is attached to one side of the display panel, which is far away from the first optical adhesive layer.
The following describes a process for manufacturing a display device by way of an example.
As shown in fig. 9 to 12, the process of manufacturing the display substrate provided in this embodiment includes:
(1) the heat dissipation film 1 is attached to the side of the display panel 2 away from the first optical adhesive layer 3. The display panel 2 includes a first surface and a second surface that are disposed opposite to each other, and the second surface is a light emitting surface of the display panel 2. A heat dissipation film 1 is bonded to a first surface of the display panel 2. As shown in fig. 9.
(2) The first optical adhesive layer 3 is attached to the second surface of the display panel 2, and the first optical adhesive layer 3 is the optical adhesive layer 9 described in the above embodiment. The structure of the optical adhesive layer 9 has been described in detail above. Therefore, the description thereof is omitted. The touch panel 4 is attached to the first optical adhesive layer 3 on the side far away from the display panel 2. The polarizer 5 is attached to the side of the touch panel 4 away from the display panel 2. As shown in fig. 10.
(3) The polarizer 5, the touch panel 4, the first optical adhesive layer 3 and the display panel 2 are perforated by laser from the polarizer 5 to form a via hole 11, a fourth through hole is formed in the polarizer 5, a third through hole is formed in the touch panel 4, a second through hole is formed in the first optical adhesive layer 3 and a first through hole is formed in the display panel 2, as shown in fig. 11. The diameter of the first through hole, the diameter of the second through hole, the diameter of the third through hole, and the diameter of the fourth through hole may be the same. Of course, the via hole 11 may be formed by a photolithography method.
(4) And attaching a second optical adhesive layer 6 to the side of the polarizer 5 away from the display panel 2 to form the semi-finished product shown in fig. 12. The second optical glue layer 6 may be an apertured optical glue layer 9 as shown in figure 4.
(5) And mounting a camera 8 outside the through hole 11, and attaching the cover plate 7 to one side of the second optical adhesive layer 6, which is far away from the display panel 2 after mounting the camera 8 to form the display device shown in fig. 7.
The embodiment of the application also provides terminal equipment which can comprise the display device. The structure of the display device has been described in detail above, and therefore, the description thereof is omitted. The terminal device can be a mobile device such as a mobile phone, a wearable device such as a tablet computer and a watch, a Virtual Reality (VR) device, a display screen of an instrument, and the like.
The following points need to be explained:
(1) the drawings of the embodiments of the invention only relate to the structures related to the embodiments of the invention, and other structures can refer to common designs.
(2) The thickness of layers or regions in the figures used to describe embodiments of the invention may be exaggerated or reduced for clarity, i.e., the figures are not drawn on a true scale. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
(3) Without conflict, embodiments of the present invention and features of the embodiments may be combined with each other to arrive at new embodiments.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. An optical adhesive layer, comprising: transparent first glue film and non-transparent second glue film, first glue film is provided with the through-hole in setting for the region, the second glue film sets up in the through-hole.
2. The optical adhesive layer according to claim 1, wherein the thickness of the second adhesive layer along the opening direction of the through hole is consistent with the hole depth of the through hole.
3. The optical adhesive layer of claim 1, wherein the second adhesive layer is attached to the sidewall of the through hole.
4. The optical adhesive layer of claim 1, wherein the second adhesive layer is not in contact with the sidewall of the through hole, and a release film is disposed on at least one side of the first adhesive layer and the second adhesive layer.
5. The optical adhesive of claim 1 wherein the second adhesive layer has a hardness greater than the hardness of the first adhesive layer.
6. The optical adhesive layer according to claim 1, wherein the second adhesive layer comprises a first sub-layer, a second sub-layer and a third sub-layer sequentially arranged along the opening direction of the through hole, and the hardness of the second sub-layer is greater than the hardness of the first sub-layer and the hardness of the third sub-layer.
7. The optical adhesive layer according to any one of claims 1 to 6, wherein the diameter of the through hole is 2.4 mm to 5.25 mm.
8. A preparation method of an optical adhesive layer is characterized by comprising the following steps:
forming a transparent first adhesive layer, wherein the first adhesive layer is provided with a through hole in a set area;
and forming a non-transparent second adhesive layer, and arranging the second adhesive layer in the through hole.
9. The method for preparing an optical adhesive layer according to claim 8, wherein the thickness of the second adhesive layer along the opening direction of the through hole is consistent with the depth of the through hole.
10. The method of claim 8, wherein disposing the second glue layer in the through hole comprises: and attaching the second adhesive layer to the side wall of the through hole.
11. The method for preparing an optical adhesive layer according to claim 8, 9 or 10, wherein the forming a non-transparent second adhesive layer comprises:
the method comprises the steps of sequentially forming a first sublayer, a second sublayer and a third sublayer, wherein the hardness of the second sublayer is greater than that of the first sublayer and that of the third sublayer.
12. A display device, comprising: display panel, first optical adhesive layer, touch panel that set gradually, wherein, display panel is provided with first through-hole, first optical adhesive layer is provided with the second through-hole, touch panel is provided with the third through-hole, first through-hole, second through-hole, third through-hole run through and form the via hole, first optical adhesive layer be as in any one of claims 1 to 6 optical adhesive layer, the second through-hole is in display panel's orthographic projection is located first optical adhesive layer's second adhesive layer is in display panel's orthographic projection is inside.
13. The display device according to claim 12, further comprising:
the touch panel comprises a polaroid, a second optical adhesive layer and a cover plate, wherein the polaroid is arranged on one side of the touch panel, which is far away from the display panel, the second optical adhesive layer is arranged on one side of the polaroid, which is far away from the display panel, and the cover plate is arranged on one side of the second optical adhesive layer, which is far away from the display panel; the second optical adhesive layer is the optical adhesive layer as claimed in any one of claims 1 to 6, the polarizer is provided with a fourth through hole, the second optical adhesive layer is provided with a fifth through hole, and the fourth through hole and the fifth through hole penetrate through the third through hole to form a part of the through hole; the orthographic projection of the fifth through hole on the display panel is located inside the orthographic projection of the second glue layer of the second optical glue layer on the display panel.
14. The display device according to claim 12 or 13, further comprising a camera, wherein an orthogonal projection of the camera is located inside an orthogonal projection of the via on a plane parallel to the display panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010736998.7A CN111697045B (en) | 2020-07-28 | 2020-07-28 | Optical adhesive layer, preparation method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010736998.7A CN111697045B (en) | 2020-07-28 | 2020-07-28 | Optical adhesive layer, preparation method thereof and display device |
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| CN111697045A true CN111697045A (en) | 2020-09-22 |
| CN111697045B CN111697045B (en) | 2023-02-10 |
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| WO2022241602A1 (en) * | 2021-05-17 | 2022-11-24 | 京东方科技集团股份有限公司 | Display module, and display device and manufacturing method therefor |
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| US20190061318A1 (en) * | 2016-02-05 | 2019-02-28 | Samsung Electronics Co., Ltd. | Display and electronic device comprising same |
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| CN108681131A (en) * | 2018-07-27 | 2018-10-19 | 厦门天马微电子有限公司 | Display device |
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| Publication number | Publication date |
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| CN111697045B (en) | 2023-02-10 |
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