CN111341932A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN111341932A CN111341932A CN202010130662.6A CN202010130662A CN111341932A CN 111341932 A CN111341932 A CN 111341932A CN 202010130662 A CN202010130662 A CN 202010130662A CN 111341932 A CN111341932 A CN 111341932A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- 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
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention provides a display module and a display device, comprising: the display screen module comprises a display surface and a back surface which are arranged oppositely; the protective cover plate is positioned on one side of the display surface of the display screen module and comprises a visual area and an ink area positioned on the periphery of the visual area, and the surface of one side, facing the display screen module, of the protective cover plate is provided with an ink layer in the ink area; the optical adhesive layer is positioned between the protective cover plate and the display screen module to attach the protective cover plate and the display screen module, and comprises a first surface used for attaching the display screen module; the ink layer is provided with a first light-transmitting pattern so as to form a first shading area and a first light-transmitting area; the first surface of the optical adhesive layer is provided with a shading compensation layer in an area corresponding to the ink area, and the orthographic projection of the shading compensation layer on the first surface at least covers the orthographic projection of the first light-transmitting area of the ink layer on the first surface. The display module and the display device provided by the invention can improve the bad phenomenon of hard-to-soft lamination.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
At present, in the correlation technique, the OLED module is in the manufacturing process, involves hard to soft laminating technology, for example, protection apron and OLED panel laminating technology, and it adopts Optical Cement (OCA) will protect apron and OLED panel laminating, then carries out deaeration, UV ultraviolet curing with the semi-manufactured goods that laminate well to increase the stickness of optical cement laminating, prevent that the bubble from taking place. However, since the protective cover plate is divided into a VA Area (View Area) corresponding to the display Area of the panel and an ink Area corresponding to the frame Area of the display screen module, the VA Area can be cured well, but the ink Area isolates UV light, so that the optical adhesive under the ink Area cannot be effectively irradiated onto the optical adhesive when irradiated by the UV light, which results in the optical adhesive not being cured effectively, and after being placed for a period of time or reliability, a rebound bubble can be generated.
At present, to the optical cement laminating bubble problem, the conventional scheme adopts the better optical cement of mobility or the thicker optical cement of thickness to absorb the bubble, however, can bring the laminating and overflow the shortcoming of gluing and increase module thickness like this, though can effectively reduce the bubble risk, but do not have essential improvement to solidification and the laminating of optical cement under the printing ink district.
Disclosure of Invention
The invention aims to provide a display module and a display device, which can improve the bad phenomenon of hard-to-soft bonding.
The technical scheme provided by the invention is as follows:
a display module, comprising:
the display screen module comprises a display surface and a back surface which are arranged oppositely;
the protective cover plate is positioned on one side of the display surface of the display screen module and comprises a visual area and an ink area positioned on the periphery of the visual area, and an ink layer is arranged on the surface of one side, facing the display screen module, of the protective cover plate in the ink area;
the optical adhesive layer is positioned between the protective cover plate and the display screen module to be attached to the protective cover plate and the display screen module, and comprises a first surface used for being attached to the display screen module;
the printing ink layer is provided with a first light-transmitting pattern so as to form a first shading area and a first light-transmitting area;
and a shading compensation layer is arranged on the first surface of the optical adhesive layer in a region corresponding to the ink area, and the orthographic projection of the shading compensation layer on the first surface at least covers the orthographic projection of the first light-transmitting area of the ink layer on the first surface.
Illustratively, the optical adhesive layer is an optically transparent double-sided adhesive.
Illustratively, the shading compensation layer is an ink layer formed on the first surface of the optical adhesive layer by printing or electroplating.
Illustratively, the entire area of the shading compensation layer is covered with the ink material;
or, a second light-transmitting pattern is arranged on the shading compensation layer to form a second shading area and a second light-transmitting area, and the orthographic projection of the second shading area on the first surface at least covers the orthographic projection of the first light-transmitting area on the first surface of the ink layer.
Illustratively, the first light transmissive pattern includes a plurality of light transmissive openings on a micrometer scale.
For example, the area of the first light-shielding region is larger than the area of the first light-transmitting region.
For example, the thickness of the ink layer is greater than or equal to that of the shading compensation layer, and the thickness of the shading compensation layer is less than or equal to 5 micrometers.
Illustratively, the thickness of printing ink layer is 1 ~ 2 microns, the thickness of shading compensation layer is 1 ~ 2 microns.
Exemplarily, the display screen module comprises an OLED panel.
A display device comprises the display module.
The beneficial effects brought by the invention are as follows:
according to the display module and the display device provided by the embodiment of the invention, the first light-transmitting pattern is manufactured on the ink layer of the protective cover plate, so that when optical cement UV is cured, UV light can penetrate through the first light-transmitting area formed by the first light-transmitting pattern, and the optical cement shielded below the ink area of the protective cover plate is effectively cured, the problem that the optical cement in the ink area cannot be cured when the protective cover plate is attached to the display screen module in the related art is solved, the problem of poor attaching rebound bubbles caused by insufficient curing of the optical cement in the ink area is improved, and the appearance quality of a module product is improved; in addition, the shading compensation layer is arranged on the surface, used for being attached to the display screen module, of the optical cement and can be matched with the first light-transmitting area on the first ink layer to replace the ink layer on the protective cover plate in the prior art, so that the effect of completely shading the ink area of the protective cover plate is achieved, and the product quality is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the invention;
FIG. 2 is a schematic view illustrating a light-transmitting region of an ink layer of a protective cover plate during UV curing of an optical adhesive layer in a display module according to an embodiment of the invention;
fig. 3 is a front view of a side surface of a protective cover plate facing the display screen module in the display module according to the embodiment of the present invention;
fig. 4 is a front view of a first surface of an optical adhesive layer in a display module according to an embodiment of the invention;
FIG. 5 is an enlarged view of a portion of the first embodiment of the portion D in FIG. 3;
FIG. 6 shows a second embodiment of the detail D from FIG. 3 in an enlarged view;
fig. 7 is a partially enlarged view of a third embodiment of the portion D in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure 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. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. 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.
Before the detailed description of the display module and the display device provided by the embodiments of the present invention, the following description of the related art is necessary:
at present, in the correlation technique, the OLED module is in the manufacturing process, involves hard to soft laminating technology, for example, protection apron and OLED panel laminating technology, and it adopts Optical Cement (OCA) will protect apron and OLED panel laminating, then carries out deaeration, UV ultraviolet curing with the semi-manufactured goods that laminate well to increase the stickness of optical cement laminating, prevent that the bubble from taking place. However, since the protective cover plate is divided into a VA Area (View Area) corresponding to the display Area of the panel and an ink Area corresponding to the frame Area of the display screen module, the VA Area can be cured well, but the ink Area isolates UV light, so that the optical adhesive under the ink Area cannot be effectively irradiated onto the optical adhesive when irradiated by the UV light, which results in the optical adhesive not being cured effectively, and after being placed for a period of time or reliability, a rebound bubble can be generated. At present, to the optical cement laminating bubble problem, the conventional scheme adopts the better optical cement of mobility or the thicker optical cement of thickness to absorb the bubble, however, can bring the laminating and overflow the shortcoming of gluing and increase module thickness like this, though can effectively reduce the bubble risk, but do not have essential improvement to solidification and the laminating of optical cement under the printing ink district.
In order to solve the problem of poor bonding such as bubbles caused by the fact that optical cement below an ink area cannot be effectively cured when a protective cover plate is bonded with a display screen module in the prior art, the embodiment of the invention provides a display module and a display device, and solves the problem that the optical cement in the ink area cannot be cured when the protective cover plate is bonded with the display screen module in the related art, so that poor bonding rebound bubbles caused by insufficient curing of the optical cement in the ink area are improved, and the appearance quality of a module product is improved.
As shown in fig. 1 to 4, the display module provided in the embodiment of the present invention includes:
the display screen module 100 comprises a display surface and a back surface which are arranged in a back-to-back manner;
the protective cover plate 200 is positioned on one side of the display surface of the display screen module 100, and comprises a visible area (VA area) and an ink area positioned on the periphery of the visible area, and an ink layer 210 is arranged on the ink area on the surface of one side, facing the display screen module 100, of the protective cover plate 200;
the optical adhesive layer 300 is positioned between the protective cover plate 200 and the display screen module 100 so as to attach the protective cover plate 200 to the display screen module 100, and the optical adhesive layer 300 comprises a first surface used for attaching to the display screen module 100;
a first light-transmitting pattern is disposed on the ink layer 210 to form a first light-shielding region 211 and a first light-transmitting region 212;
on the first surface of the optical adhesive layer 300, a shading compensation layer 310 is disposed in a region corresponding to the ink region, and an orthographic projection of the shading compensation layer 310 on the first surface at least covers an orthographic projection of the first light-transmitting region 212 of the ink layer 210 on the first surface.
In the above scheme, by fabricating the first light-transmitting pattern on the ink layer 210 of the protective cover plate 200, as shown in fig. 2, when performing UV curing of the optical adhesive, UV light can penetrate through the first light-transmitting region 212 formed by the first light-transmitting pattern, and effectively cure the optical adhesive layer 300 shielded under the ink region of the protective cover plate 200, thereby solving the problem that the optical adhesive in the ink region cannot be cured when the protective cover plate is attached to the display screen module in the related art, improving poor attaching rebound bubbles caused by insufficient curing of the optical adhesive in the ink region, and improving the appearance quality of the module product; in addition, the shading compensation layer 310 is further disposed on a surface of the optical adhesive, which is used for being attached to the display screen module 100, and the shading compensation layer 310 may be matched with the first light-transmitting area 212 on the first ink layer 210 to replace an ink layer on a protective cover plate in the prior art, so as to achieve a complete shading effect in the ink area of the protective cover plate, and ensure product quality.
In addition, in the correlation technique, the printing ink layer is established on the side surface that is used for laminating the display screen module of protection apron, and this printing ink layer is located one side that is used for laminating the protection apron that optical cement was glued, and the light of display screen module is through the optical cement of certain thickness outgoing, in order to play the effect that the printing ink district is complete shaded, and the width in printing ink district need have certain width, and narrow frame design is restricted.
In the display module provided in the embodiment of the present invention, as shown in fig. 1 to 4, the light-shielding compensation layer 310 is disposed on the optical adhesive layer 300, and the light-shielding compensation layer 310 is disposed on a surface of the optical adhesive layer 300, which is attached to the display screen module 100, that is, the first surface, so that a distance between the light-shielding compensation layer 310 and the display screen module 100 is closer than a distance between the ink layer 210 and the display screen module 100, which is located on a side of the optical adhesive layer 300 away from the display screen module 100 in the prior art, and widths of the ink layer 210 and the light-shielding compensation layer 310 can be designed to be narrower, thereby reducing a risk of light leakage of the display module at a large viewing angle, facilitating further realizing a narrow frame of a product, and making a distance between an edge of a material and an effective display area (edge-AA) of the display screen module 100 smaller.
In an exemplary embodiment, the optical adhesive layer 300 is an optically transparent double-sided adhesive.
By adopting the scheme, the display module is provided with the protective cover plate 200 and the display screen module 100 which are jointed together by hard and soft adhesive tapes, and the optical transparent double-sided adhesive tapes are jointed together, so that the adhesive is not easy to overflow and the jointing effect is better compared with optical adhesive tapes with better fluidity and the like. The optically transparent double-sided tape may be formed by directly adhering a double-sided tape between the protective cover 200 and the display module 100, and may include a transparent substrate and optical adhesive layers 300 respectively disposed on two opposite surfaces of the transparent substrate.
In addition, in an exemplary embodiment of the present invention, the light shielding compensation layer 310 is an ink compensation layer formed on the first surface of the optical adhesive layer 300 by printing or electroplating.
By adopting the above scheme, the shading compensation layer 310 may be made of the same ink material as that of the ink layer 210 on the protective cover plate 200, and the surface of the optical adhesive layer 300 may be directly formed by printing or electroplating.
It is understood that the shading compensation layer 310 may be formed of other materials.
In addition, in one embodiment, the entire area of the light shielding compensation layer 310 is covered with the ink material, that is, the light shielding compensation layer 310 is a full light shielding structure. Thus, the first transparent pattern of the ink layer 210 of the protective cover 200 can be completely shielded by the shading compensation layer 310, so as to achieve the effect of completely shading the ink area of the protective cover 200.
In another embodiment, the shading compensation layer 310 may further have a second light-transmitting pattern thereon to form a second light-shielding region and a second light-transmitting region, and an orthographic projection of the second light-shielding region on the first surface at least covers an orthographic projection of the first light-transmitting region 212 of the ink layer 210 on the first surface. That is, the shading compensation layer 310 may also have a shielding layer structure with a second transparent pattern (pattern), and the second transparent pattern needs to be complementary to the first transparent pattern on the ink layer 210 of the protective cover 200 to achieve a complete shading effect.
Further, in an exemplary embodiment, the first light transmissive pattern includes a plurality of light transmissive openings on a micrometer scale. With the above scheme, the first light-transmitting pattern of the ink layer 210 on the protective cover plate 200 may include a plurality of light-transmitting openings, and the size of each light-transmitting opening is in a micron level and is invisible to the naked eye, but can be observed under strong light, so as to ensure the appearance quality of the product while making UV light be transparent.
In addition, it is preferable that the area of the first light-shielding region 211 is larger than the area of the first light-transmitting region 212, so that complete light shielding can be further ensured without affecting the quality of the appearance.
It should be noted that the pattern form of the first transparent pattern of the ink layer 210 is not limited, and may be a regular pattern or an irregular pattern, for example, fig. 4 to 6 show several exemplary pattern forms of the first transparent pattern, which are only examples and are not limited herein.
In addition, it should be noted that the first light-transmitting pattern may be formed by a hollow pattern, or may be a non-hollow light-transmitting pattern.
In addition, in the correlation technique, in order to make the printing ink district of protection apron play the effect of complete shading, the thickness on printing ink layer is thick usually, and like this, printing ink layer thickness itself is thick, and the printing ink layer produces the offset and also great, absorbs the requirement based on the printing ink offset, when choosing the optical cement layer, needs to adopt thicker optical cement layer, and like this, whole module is unfavorable for the attenuate.
In the display module provided by the present invention, the ink layer 210 on the protective cover plate 200 can be matched with the shading compensation layer 310 on the first surface of the optical adhesive layer 300 to replace the ink layer 210 on the protective cover plate 200 in the prior art, that is, the display module in the embodiment of the present invention performs layering on the ink layer 210, so that the thickness of the ink layer 210 on the protective cover plate 200 and the thickness of the shading compensation layer 310 on the optical adhesive layer 300 can be reduced under the requirement of complete shading, thereby reducing the break of the ink layer 210, and when the optical adhesive layer 300 is selected based on the requirement of ink break absorption, the optical adhesive layer 300 with a smaller thickness can be selected, thereby facilitating the reduction of the optical adhesive layer 300 and the reduction of the whole module.
In an exemplary embodiment, the thickness of the ink layer 210 is greater than or equal to the thickness of the shading compensation layer 310, and the thickness of the shading compensation layer 310 is less than or equal to 5 micrometers. For example, the thickness of the ink layer 210 is 1 to 2 microns, and the thickness of the shading compensation layer 310 is 1 to 2 microns.
In addition, in the display module provided in the embodiment of the present invention, the display screen module 100 may include an OLED panel, that is, the display module may be applied to an OLED display product. The display module 100 may further include an OLED display panel, a touch panel, a polarizer, a heat dissipation TAPE (not shown in the figure), and the like.
In addition, the display module provided by the embodiment of the invention can be applied to 2D or 3D display products, and can be a rigid display screen module 100 or a flexible display screen module 100.
In addition, the display module provided by the embodiment of the invention can also be applied to other types of display products, such as an LCD (liquid crystal display) module and the like.
In addition, the embodiment of the invention also provides a display device which comprises the display module provided by the embodiment of the invention. The display device can be various display products such as a mobile phone, a tablet, a computer display screen module 100 and the like. Obviously, the display device provided in the embodiment of the present invention may also bring about the beneficial effects brought by the display module provided in the embodiment of the present invention, and details are not described herein again.
The following points need to be explained:
(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.
(2) For purposes of clarity, the thickness of layers or regions in the figures used to describe embodiments of the present disclosure are exaggerated or reduced, 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 disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be subject to the claims.
Claims (10)
1. A display module, comprising:
the display screen module comprises a display surface and a back surface which are arranged oppositely;
the protective cover plate is positioned on one side of the display surface of the display screen module and comprises a visual area and an ink area positioned on the periphery of the visual area, and an ink layer is arranged on the surface of one side, facing the display screen module, of the protective cover plate in the ink area;
the optical adhesive layer is positioned between the protective cover plate and the display screen module to be attached to the protective cover plate and the display screen module, and comprises a first surface used for being attached to the display screen module;
it is characterized in that the preparation method is characterized in that,
the printing ink layer is provided with a first light-transmitting pattern so as to form a first shading area and a first light-transmitting area;
and a shading compensation layer is arranged on the first surface of the optical adhesive layer in a region corresponding to the ink area, and the orthographic projection of the shading compensation layer on the first surface at least covers the orthographic projection of the first light-transmitting area of the ink layer on the first surface.
2. The display module of claim 1,
the optical adhesive layer is an optical transparent double-sided adhesive tape.
3. The display module of claim 2,
the shading compensation layer is an ink compensation layer formed on the first surface of the optical adhesive layer in a printing or electroplating mode.
4. The display module of claim 3,
all areas of the shading compensation layer are covered with printing ink materials;
or, a second light-transmitting pattern is arranged on the shading compensation layer to form a second shading area and a second light-transmitting area, and the orthographic projection of the second shading area on the first surface at least covers the orthographic projection of the first light-transmitting area on the first surface of the ink layer.
5. The display module of claim 1,
the first light-transmissive pattern includes a plurality of light-transmissive openings on a micrometer scale.
6. The display module of claim 1,
the area of the first shading area is larger than that of the first light-transmitting area.
7. The display module of claim 1,
the thickness of the ink layer is greater than or equal to that of the shading compensation layer, and the thickness of the shading compensation layer is less than or equal to 5 microns.
8. The display module of claim 1,
the thickness of printing ink layer is 1 ~ 2 microns, the thickness of shading compensation layer is 1 ~ 2 microns.
9. The display module of claim 1,
the display screen module comprises an OLED panel.
10. A display device, comprising the display module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010130662.6A CN111341932A (en) | 2020-02-28 | 2020-02-28 | Display module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010130662.6A CN111341932A (en) | 2020-02-28 | 2020-02-28 | Display module and display device |
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| CN111341932A true CN111341932A (en) | 2020-06-26 |
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| CN202010130662.6A Pending CN111341932A (en) | 2020-02-28 | 2020-02-28 | Display module and display device |
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| CN (1) | CN111341932A (en) |
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| US11611051B2 (en) | 2020-09-16 | 2023-03-21 | Boe Technology Group Co., Ltd. | Display panel and display device |
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