CN112925055A - Display device and method for forming display device - Google Patents
Display device and method for forming display device Download PDFInfo
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- CN112925055A CN112925055A CN202110130705.5A CN202110130705A CN112925055A CN 112925055 A CN112925055 A CN 112925055A CN 202110130705 A CN202110130705 A CN 202110130705A CN 112925055 A CN112925055 A CN 112925055A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 131
- 239000010410 layer Substances 0.000 claims abstract description 126
- 230000001681 protective effect Effects 0.000 claims abstract description 61
- 230000002093 peripheral effect Effects 0.000 claims abstract description 53
- 239000011241 protective layer Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 29
- 239000011796 hollow space material Substances 0.000 claims description 19
- 239000013039 cover film Substances 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 12
- 239000010408 film Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 6
- 230000009545 invasion Effects 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a display device and a forming method of the display device, wherein the display device is provided with a display area and a non-display area, the non-display area comprises a binding area and a non-binding area, and the display device comprises: the display substrate comprises a display device layer and a polarizer positioned on one side of the display device layer, and the display substrate is provided with a first surface, a second surface and a peripheral side surface, wherein the first surface and the second surface are oppositely arranged in the thickness direction of the display substrate, and the peripheral side surface is connected with the first surface and the second surface; the protective layer comprises a side protective part, and the side protective part wraps at least part of the peripheral side face. The embodiment of the invention can improve the yield of the display device.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a display device and a forming method of the display device.
Background
With the continuous update of display module technologies, small-sized panels are gradually developing towards light and thin, high screen occupation ratio, ultra-narrow frame and even frameless. A display device of a conventional structure generally includes a display area and a binding area located on a peripheral side of the display area. The layer structure in the binding region needs to be bent, cracks can occur after the layer structure is bent, gaps are generated, particularly gaps are generated on the periphery of the polaroid, water oxygen can invade the polaroid, and external water oxygen can interact with the polaroid to influence the yield of the polaroid.
Therefore, a new display device and a method for forming the same are needed.
Disclosure of Invention
The embodiment of the invention provides a display device and a forming method thereof, aiming at improving the yield of the display device.
An embodiment of the present invention provides a display device, the display device having a display area and a non-display area, the non-display area including a binding area and a non-binding area, the display device including: the display substrate comprises a display device layer and a polarizer positioned on one side of the display device layer, and the display substrate is provided with a first surface, a second surface and a peripheral side surface, wherein the first surface and the second surface are oppositely arranged in the thickness direction of the display substrate, and the peripheral side surface is connected with the first surface and the second surface; the protective layer comprises a side protective part, and the side protective part wraps at least part of the peripheral side face.
According to an embodiment of the first aspect of the invention,
the protective layer also comprises a first protective part which is connected with the side protective part and is positioned on one side of the polaroid, which is far away from the display device layer;
preferably, the first protection portion is disposed on a first surface, and the first surface is located on a display side of the display substrate.
According to any of the preceding embodiments of the first aspect of the invention,
the display substrate comprises a metal wiring layer located in the binding region;
the peripheral side face comprises a first peripheral side face, the first peripheral side face comprises a display device layer, a surface, facing the unbound area, of the polarizer and a surface, facing the bound area, of the polarizer, and the side protection portion wraps the first peripheral side face and is connected to the first protection portion.
According to any one of the foregoing embodiments of the first aspect of the present invention, at least part of the side guard covers the metal wiring layer.
According to any of the preceding embodiments of the first aspect of the invention,
the protective layer further comprises a second protective portion, the second protective portion is connected with the side protective portion and arranged on the second surface, and the second surface is the surface of the display substrate, which deviates from the first protective portion.
According to any one of the preceding embodiments of the first aspect of the invention, the second protection portion is located in the non-display area.
According to any one of the preceding embodiments of the first aspect of the invention, further comprising: the display device comprises a middle frame, a display substrate and a display substrate, wherein the middle frame is provided with a body part and a hollow space formed by enclosing the body part, the hollow space is positioned in a display area, the surface of the body part facing the display side of the display device is recessed to form a groove communicated with the hollow space, and the display substrate is arranged on the middle frame;
the side protection part is attached between the side wall surface of the groove facing the hollow part and the side surface of the display substrate, and the second protection part is attached between the bottom surface of the groove facing the display substrate and the second surface.
According to any one of the preceding embodiments of the first aspect of the invention, further comprising: the cover plate film layer is arranged on one side, away from the polaroid, of the first protection portion, and the distance between one side, away from the display area, of the cover plate film layer and the side wall surface of the groove is smaller than the distance between one side, away from the display area, of the first protection portion and the side wall surface of the groove.
According to any of the preceding embodiments of the first aspect of the present invention, the cover film layer is sealingly attached to the side wall surface of the recess.
According to any of the foregoing embodiments of the first aspect of the present invention, the non-display region of the display device is a bending region, and a distance L3 between a side of the cover film layer away from the display region and the peripheral side surface of the polarizer satisfies the following relationship:
L3≥(h+h3+h4)*π*α
wherein h is a thickness of the display substrate, h3 is a thickness of the first protection portion, and h4 is a thickness of the second protection portion; and alpha is the bending angle of the bending area of the display device.
According to any one of the preceding embodiments of the first aspect of the present invention, L3 ═ h + h3+ h4 ═ pi · α +0.5 mm.
According to any of the preceding embodiments of the first aspect of the invention,
at least part of the side protection part and the first protection part are integrally formed;
and/or at least part of the side protection part and the second protection part are integrally formed.
According to any of the preceding embodiments of the first aspect of the present invention, the peripheral side surface comprises a first sub-surface and a second sub-surface, the first sub-surface is located on a side of the display substrate facing the unbound area, and the second sub-surface is located on a side of the display substrate facing the bound area;
the side protection part comprises a first side part and a second side part, the first side part wraps the first sub-surface, the second side part wraps the second sub-surface,
the first side part and the second protection part are integrally formed, or the first side part and the first protection part are integrally formed, or part of the first side part and the first protection part are integrally formed, and part of the first side part and the second protection part are integrally formed;
the second side portion and the first protection portion are integrally formed.
According to any one of the embodiments of the first aspect of the present invention, the extended length L2 of the side protective portion in the thickness direction of the display substrate is greater than or equal to h, where h is the sum of the thicknesses of the display device layer and the polarizer in the thickness direction of the display substrate.
According to any one of the embodiments of the first aspect of the present invention, L2 ≧ L1+ h, where L1 is the distance between the side of the first protection portion away from the display region and the peripheral side surface of the display substrate opposite to the first protection portion in the direction parallel to the extension direction of the film layer of the display substrate.
According to any one of the preceding embodiments of the first aspect of the present invention, L2 ═ L1+ h +0.2 mm.
According to any one of the preceding embodiments of the first aspect of the present invention, the distance L1 by which the first protection portion protrudes from the peripheral side surface is greater than or equal to 0.2 mm.
An embodiment of a second aspect of the present invention provides a molding method of a display device, including:
providing a middle frame, wherein the middle frame is provided with a body part and a hollow space formed by enclosing the body part, the surface of the body part facing to the display side of the display device is recessed to form a groove communicated with the hollow space, and the groove is provided with a bottom surface and a side wall surface facing to the hollow space;
a second protection part is arranged on the bottom surface of the groove;
a display substrate is arranged on one side, away from the bottom surface, of the second protection part, a gap is formed between the display substrate and the side wall surface, and the display substrate comprises a display device layer and a polaroid located on one side, away from the second protection part, of the display device layer;
and a first protection part is arranged on one side of the polaroid, which is deviated from the display device layer, and the first protection part and the second protection part are connected with each other through the first side part in a gap between the side wall surface and the display substrate.
In the display device of the embodiment of the invention, the display device includes a display substrate and a protective layer. The display substrate comprises a display device layer and a polaroid, and display of the display device can be achieved. The side protection part of the protection layer wraps at least part of the peripheral side face of the display substrate, so that the contact area between the peripheral side face and the external environment can be reduced, namely the contact area between the polarizer and the display device layer and the external environment is reduced, the influence of water and oxygen invasion on the display substrate is further improved, and the yield of the display device is improved. Therefore, in the display device provided by the embodiment of the invention, the contact area between the display substrate and the external environment can be reduced by arranging the side protection part, and the yield of the display device is further improved.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of a first aspect of the present invention;
fig. 2 is a schematic structural diagram of a display substrate of a display device according to an embodiment of the first aspect of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 4 is a schematic view of a portion of the enlarged structure at I in FIG. 3;
fig. 5 is a schematic structural diagram of a middle frame in a display device according to an embodiment of the first aspect of the present invention;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 7 is a schematic view of a portion of the enlarged structure at II in FIG. 6;
FIG. 8 is a partial enlarged view of FIG. 3 at I in another embodiment;
fig. 9 is a schematic structural diagram of a partial layer structure in another state in a display device according to an embodiment of the first aspect of the present invention;
fig. 10 is a partial cross-sectional view of a display device according to an embodiment of the first aspect of the present invention from another viewing angle;
fig. 11 is a flowchart illustrating a method for forming a display device according to an embodiment of the second aspect of the present invention.
Description of reference numerals:
100. a middle frame; 110. a body portion; 111. a groove; 112. a side wall surface; 113. a bottom surface; 120. hollowing out a space;
200. a side protection part; 210. a first side portion; 220. a second side portion;
300. a display substrate; 310. a display device layer; 320. a polarizer; 330. a metal wiring layer;
400. a first protection portion;
500. a cover plate film layer;
600. a baffle plate;
700. a second protection section;
AA. A display area; NA, non-display area; NA1, unbound region; NA2, binding region.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present invention, 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, as used herein, refer to an orientation or positional relationship indicated for convenience in describing the invention and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. 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.
The directional terms appearing in the following description are intended to be illustrative in all directions, and are not intended to limit the specific construction of embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For better understanding of the present invention, a display device and a method of forming the display device according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 11.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the first aspect of the present invention. The display device has a display area AA and a non-display area NA. The non-display area includes a binding area NA2 and a non-binding area NA 1.
According to the display device provided by the embodiment of the invention, the binding area NA2 may be located on the same plane as the display area AA.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a display substrate of a display device according to an embodiment of the first aspect of the present invention.
According to the display device provided by the embodiment of the invention, at least part of the display substrate of the binding region NA2 is bent to the non-display side of the display device. The area ratio of the display area AA on the display side of the display device can be improved, and the screen ratio of the display device is further improved.
In other embodiments, the non-binding area NA1 may be a plurality of binding areas NA1 and NA2 located on the periphery of the display area AA.
Referring to fig. 3 and 4 together, fig. 3 is a cross-sectional view taken along line a-a of fig. 1. Fig. 4 is a schematic view of a part of the enlarged structure at I in fig. 3.
According to the display device provided by the embodiment of the invention, the display device is provided with a display area AA and a non-display area NA, the non-display area NA comprises a binding area NA2 and a non-binding area NA1, and the display device comprises: a display substrate 300 including a display device layer 310 and a polarizer 320 on one side of the display device layer 310, the display substrate 300 having a first surface and a second surface oppositely disposed in a thickness direction thereof, and a peripheral side surface connecting the first surface and the second surface; the protective layer comprises a side protective part 200, and the side protective part 200 is arranged by wrapping at least part of the peripheral side surface.
The arrangement that the side protection part 200 wraps at least part of the peripheral side surface means that the peripheral side surface is in contact with the side protection part 200, so that the direct contact between the peripheral side surface and the external environment is reduced or even avoided. The contact here may be direct contact or indirect contact; the parcel is defined as satisfying the present application as long as the orthographic projection of the peripheral surface on the side protector 200 is completely covered by the side protector 200.
In the display device of the embodiment of the present invention, the display device includes a display substrate 300 and a protective layer. The display substrate 300 includes a display device layer 310 and a polarizer 320, and enables display of the display apparatus. The side protection part 200 of the protection layer wraps at least part of the peripheral side surface of the display substrate 300, that is, the side protection part 200 completely wraps the peripheral side surface of the display substrate 300 facing the non-binding region NA1, so that the contact area between the peripheral side surface and the external environment, that is, the contact area between the polarizer 320 and the display device layer 310 and the external environment can be reduced, the influence of water and oxygen invasion on the display substrate 300 is further improved, and the yield of the display device is improved. Therefore, in the display device provided by the embodiment of the invention, by providing the side protective part 200, the contact area between the display substrate 300 and the external environment can be reduced, and the yield of the display device can be improved.
There are various ways of disposing the protective layer, and optionally, the protective layer further includes a first protective portion 400 located in the non-binding area NA1 and the display area AA, the first protective portion 400 is connected to the side protective portion 200 and disposed on a first surface of the display substrate 300, and the first surface is located on the display side of the display substrate 300.
For example, the first surface is a surface of the polarizer 320 facing away from the display device layer 310, and the first protection part 400 is located on a side of the polarizer 320 facing away from the display device layer 310. The first protection portion 400 can protect the surface of the polarizer 320, reduce the contact area between the polarizer 320 and the external environment, further improve the influence of water and oxygen invasion on the polarizer 320, and increase the yield of the display device.
Optionally, the protection layer further includes a second protection portion 700, the second protection portion 700 is connected to the side protection portion 200 and is disposed on a second surface, and the second surface is a surface of the display substrate 300 facing away from the first protection portion 400.
The second surface is, for example, the surface of the display device layer 310 facing away from the polarizer 320. The second protection part 700 is disposed on the second surface, so that the contact area between the display device layer 310 and the external environment can be reduced, and the yield of the display device layer 310 can be improved.
The second protection part 700 and the side protection part 200 are connected with each other, so that the protective layer can better wrap the display substrate 300, the contact area between the display substrate 300 and the external environment is further reduced, the influence of water and oxygen invasion on the display substrate 300 is improved, and the yield of the display device is improved.
Optionally, the display device further includes a non-display area NA, and the second protection part 700 is located in the non-display area NA. For example, the second protection part 700 is located in the unbound area NA1, and the influence of the second protection part 700 on the display effect of the display device can be reduced. Here, the second protection part 700 is located in the non-display area NA and may be: the second protection part 700 is on a side of the display substrate 300 facing away from the display area AA, and an orthographic projection of the second protection part 700 is located in the unbundling area NA1 of the non-display area NA.
Optionally, the display device further includes a middle frame 100, please refer to fig. 5, and fig. 5 is a schematic structural diagram of the middle frame 100 of the display device according to the embodiment of the first aspect of the present invention.
According to the display device provided by the embodiment of the invention, the display device further comprises: the display device comprises a middle frame 100, a display substrate 300 and a plurality of display panels, wherein the middle frame 100 is provided with a body part 110 and a hollow space 120 formed by enclosing the body part 110, the hollow space 120 is located in a display area AA, the surface of the body part 110 facing to the display side of the display device is recessed to form a groove 111 communicated with the hollow space 120, and the display substrate 300 is arranged on the middle frame 100; the partial side protection part 200 is attached between the side wall surface 112 of the groove 111 facing the hollow part and the side surface of the display substrate 300, and the second protection part 700 is attached between the bottom surface 113 of the groove 111 facing the display substrate 300 and the second surface.
In these alternative embodiments, a side protection portion 200 is disposed between the peripheral side surface of the display substrate 300 and the side wall surface 112 of the groove 111, and the side protection portion 200 can provide protection for the peripheral side surface, so as to improve the friction damage of the middle frame 100 to the peripheral side surface. The second surface of the display substrate 300 is attached to the bottom surface 113 of the groove 111 through the second protection portion 700, and the second protection portion 700 can provide protection for the second surface, so that the friction damage of the middle frame 100 to the second surface is improved.
Referring to fig. 6 and 7 together, fig. 6 is a cross-sectional view taken along line B-B in fig. 1, and fig. 7 is an enlarged partial structural view taken along line II in fig. 6.
The side protection part 200 may be disposed in various ways, and optionally, the display substrate 300 further includes a metal wiring layer 330 located in the bonding region NA2, the peripheral side surface includes a first peripheral side surface and a second peripheral side surface, the first peripheral side surface includes the display device layer 310 and the polarizer 320 located on the surface of the non-bonding region NA1, and the polarizer 320 facing the surface of the bonding region NA2, the second peripheral side surface includes the metal wiring layer 330 located on the surface of the bonding region NA2, and the side protection part 200 wraps the first peripheral side surface and is connected to the first protection part 400.
In these embodiments, the side surfaces of the display device layer 310 and the polarizer 320 that may be exposed to the external environment need to be protected. The surface of the display device layer 310 facing the binding area NA2 and the metal wiring layer 330 are connected to each other, and thus at least a part of the surface of the display device layer 310 facing the binding area NA2 is covered with the metal wiring layer 330. The portion of the metal wiring layer 330 away from the display device layer 310 may be bonded and bent to the back surface of the display device, i.e., the second peripheral side surface may be bent to the back surface without protection. The wrapping of the first peripheral side surface by the side protective part 200 can provide better protection to the display device layer 310 and the polarizer 320.
There are various ways of disposing the metal wiring layer 330, for example, the metal wiring layer 330 is used to connect to an external IC circuit, for example, the metal wiring layer 330 is a COF circuit.
In addition, the side protection part 200 is connected to the first protection part 400, so that the gap between the side protection part 200 and the first protection part 400 can be reduced, the contact area between the display device layer 310 and the polarizer 320 and the external environment can be further reduced, the influence of water and oxygen invasion on the display substrate 300 can be further improved, and the yield of the display device can be improved.
Optionally, the side protection part 200 covers at least part of the metal wiring layer 330, so that the side protection part 200 can provide protection for the metal wiring layer 330.
The side protective part 200 may be disposed in various ways, for example, the peripheral side surface includes a first sub surface and a second sub surface, the first sub surface is located on the side of the display substrate 300 facing the side wall surface 112 of the groove 111, that is, the first sub surface is located on the side of the display substrate 300 facing the non-binding area NA 1; the second sub-surface is located on a side of the display substrate 300 facing the bonding area NA 2. Since the metal wiring layer 330 is connected to the side surface of the display device layer 310 facing the bonding area NA2, when there is a height difference between the display device layer 310 and the metal wiring layer 330, the second sub-surface is the side surface of the display device layer 310 that is not covered by the metal wiring layer 330 and the side surface of the polarizer 320. When there is no height difference between display device layer 310 and metal wiring layer 330, that is, metal wiring layer 330 completely covers the side of display device layer 310 facing bundled area NA2, the second sub-surface is the surface of polarizer 320 facing bundled area NA 2. The side protection part 200 includes a first side part 210 and a second side part 220, the first side part 210 wraps the first sub-surface, the second side part 220 wraps the second sub-surface, that is, the first side part 210 is located between the sidewall surface 112 of the groove 111 and the display substrate 300, and the second side part 220 is located on the metal wiring layer 330.
Referring to fig. 8, fig. 8 is a schematic view of a partial enlarged structure at I in fig. 3 according to another embodiment.
The side protective part 200 may be disposed in various ways, for example, the first protective part 400 and the side protective part 200 are integrally formed, that is, the first protective part 400 and the side protective part 200 are formed by bending and deforming the same material layer, so that the manufacturing process of the display device can be simplified.
In other embodiments, a portion of the side guard portion 200 is integrally formed with the first guard portion 400, and another portion of the side guard portion 200 is integrally formed with the second guard portion 700. For example, the side protective portion 200 includes an upper protective portion and a lower protective portion sequentially distributed in a thickness direction of the display device, the upper protective portion is located on a side of the lower protective portion close to the first protective portion 400, the upper protective portion 200 is integrally formed with the first protective portion 400, and the lower protective portion 200 is integrally formed with the second protective portion 700.
Optionally, the first side portion 210 is integrally formed with the second protection portion 700, and the second side portion 220 is integrally formed with the first protection portion 400.
In these alternative embodiments, in the assembly molding process of the display device, during the process of sequentially disposing the second protective portion 700, the display substrate 300, and the first protective portion 400 on the middle frame 100, a portion of the layer structure for forming the first protective portion 400 may be attached to the sidewall surface 112 of the groove 111 to form the first side portion 210 when the second protective portion 700 is disposed. Then, the display substrate 300 is disposed on the middle frame 100, and finally, when the first protection portion 400 is formed, a portion of the layer structure for forming the first protection portion 400 may be bent to protrude from the side surface of the polarizer 320 and then attached to the side surface of the polarizer 320 to form the second side portion 220, where the second side portion at least wraps a side of the polarizer 320 facing the binding region NA 2. Optionally, the second side portion further wraps a side of the display device layer 310 facing the bonding area NA2, and is located above the metal wiring layer 330 and connected to the metal wiring layer 330.
In other embodiments, it may also be: a portion of the first side portion 210 is integrally formed with the second protection portion 700 and another portion of the first side portion 210 is integrally formed with the first protection portion 400, or the first side portion 210 is integrally formed with the first protection portion 400 and the second side portion 220 is integrally formed with the first protection portion 400.
The second protection part 700 is made of various materials, the second protection part 700 is, for example, an optical adhesive layer, and the second protection part 700 not only can protect the display substrate 300, but also can enable the display substrate 300 to be bonded to the middle frame 100 through the second protection part 700, so that the stability of the relative position between the display substrate 300 and the middle frame 100 is improved.
The display substrate 300 may be disposed in various ways, and the display substrate 300 further includes, for example, a substrate, the display device layer 310 is disposed on the substrate, and the polarizer 320 is located on a side of the display device layer 310 facing away from the substrate. The display device layer 310 includes, for example, a driving circuit layer including a thin film transistor, a driving capacitor, a data line, a scan line, and the like. The side of the driving circuit layer, which faces away from the substrate, is further provided with film layer structures such as a planarization layer, a pixel electrode layer, a pixel definition layer, a light emitting structure layer, a common electrode layer and an encapsulation layer.
In the display device provided by the embodiment of the invention, the substrate may be made of a light-transmitting material such as glass or Polyimide (PI). When the display device needs to bend the binding region NA2 to the back surface, the substrate may be made of a flexible material such as Polyimide (PI).
The display device further includes a cover film 500 disposed on a side of the first protection portion 400 facing away from the polarizer 320. The cover film layer 500 is sealingly attached to the sidewall surfaces 112 of the recesses 111. The first protection portion 400 is made of, for example, an optical adhesive layer, and the first protection portion 400 can not only protect the display substrate 300, but also allow the display substrate 300 to be bonded to the cover film layer 500 through the first protection portion 400.
Optionally, a distance from the edge of the cover film 500 to the side wall surface 112 is less than a distance from the first protection portion 400 to the side wall surface 112, that is, a distance from the side of the cover film 500 away from the display area AA to the side wall surface 112 of the groove 111 is less than a distance from the side of the first protection portion 400 away from the display area AA to the side wall surface 112 of the groove 111, so that the cover film 500 can protect the first protection portion 400, and prevent impurities such as an ash layer from affecting the service life of the first protection portion 400.
When the display device has a bending region, the distance L3 between the side of the cover film layer 500 away from the display region AA and the peripheral side surface of the display substrate 100 satisfies the following relationship:
L3≥(h+h3+h4)*π*α
where h is the sum of the thicknesses of the display device layer 310 and the polarizer 320, h3 is the thickness of the second protective part 200, and h4 is the thickness of the first protective part 400; and alpha is the bending angle of the bending area of the display device.
In these alternative embodiments, the cover film layer 500 is enabled to provide protection to the various layer structures when L3 satisfies the above relationship. Alternatively, L3 ═ (h + h3+ h4) × pi α +0.5 mm.
In some alternative embodiments, the distance from the first protection part 400 to the sidewall surface 112 of the groove 111 is smaller than the distance from the display substrate 300 to the sidewall surface 112 of the groove 111. On one hand, the first protection part 400 can cover more or even all of the first surface of the display substrate 300, and the first protection part 400 can provide better protection for the display substrate 300; on the other hand, the first protection portion 400 is disposed to protrude from the display substrate 300 toward the side wall surface 112 of the recess 111, and a connection space can be reserved for the first side portion 210 to be connected to the first protection portion 400, so that the first side portion 210 can be connected to a portion of the first protection portion 400 protruding from the display substrate 300.
There are various ways of providing the first protective portion 400 to extend toward the side wall surface 112 of the recess 111 by the size of the display substrate 300. Optionally, a difference between a distance from the first protection portion 400 to the sidewall surface 112 of the groove 111 and a distance from the display substrate 300 to the sidewall surface 112 of the groove 111 is greater than or equal to 0.2 mm.
In these alternative embodiments, when the difference between the distance from the first protection portion 400 to the side wall surface 112 of the groove 111 and the distance from the display substrate 300 to the side wall surface 112 of the groove 111 is within the above range, it can be avoided that the difference between the distance from the first protection portion 400 to the side wall surface 112 of the groove 111 and the distance from the display substrate 300 to the side wall surface 112 of the groove 111 is too small, so that the first protection portion 400 cannot leave enough space for connecting the first side portion 220; the difference between the distance from the first protection portion 400 to the side wall surface 112 of the groove 111 and the distance from the display substrate 300 to the side wall surface 112 of the groove 111 is too large, the length of the first protection portion 400 extending out of the display substrate 300 is too long, and the first protection portion 400 may be wrinkled, which may affect the use of the first protection portion.
In some alternative embodiments, the extension L2 of the first side portion 210 in the thickness direction of the display substrate 300 satisfies the following relation:
L2≥h
where h is the sum of the thickness h1 of the display device layer 310 and the thickness h2 of the polarizer 320 in the thickness direction of the display substrate 300.
In these alternative embodiments, the extension L2 of the first side portion 210 is greater than or equal to the sum h of the thickness h1 of the display device layer 310 and the thickness h2 of the polarizer 320, so that the first side portion 210 can cover more peripheral sides and the first side portion 210 can provide better protection for the display substrate 300.
Optionally, L2 is equal to or greater than L1+ h, and L1 is a distance between a side of the first protection portion 400 away from the display area AA and a peripheral side surface of the display substrate 300 opposite to the first protection portion 400 in a film extending direction parallel to the display substrate 300.
In these alternative embodiments, the extension L2 of the first side portion 210 is greater than or equal to the sum of L1 and h, so that the first side portion 210 can not only cover the peripheral side surface of the display substrate 300, but also leave enough space on the first side portion 210 to connect with the first protection portion 400.
Alternatively, L2 ═ L1+ h +0.2 mm. When the extension L2 of the first side portion 210 satisfies the above relation, the dimension L2 can be prevented from being too long, so that the first side portion 210 is wrinkled; it is also possible to avoid the size of the L2 being too small to allow the first side portion 210 to be stably coupled to the first protective portion 400.
Referring to fig. 9, in order to better show the dimensional relationship between the structures, the structures in fig. 9 are all in a horizontal state. Assuming that the first side portion 210 is integrally formed with the second protective portion 700, the first side portion 210 is a portion protruding out of a side surface of the second protective portion 700 facing the non-binding area NA1 in a horizontal state. That is, fig. 9 is a schematic structural diagram illustrating a state before the first side portion 210 and the first protection portion 700 are located on the same plane and the first side portion 210 is bent with respect to the first protection portion 700. At this time, the extension L2 of the first side portion 210 is the extension of the first side portion 210 in the plane of the first protection portion 700. When the first side portion 210 is bent with respect to the first protection portion 700, an extension L2 of the first side portion 210 is an extension of the first side portion 210 in the thickness direction. The boundary between the second protective part 700 and the first side part 210 is illustrated in fig. 9 by a chain line, which does not constitute a structural limitation of the embodiment of the present invention.
As shown in fig. 9, in the horizontal state, the dimension of the first protection portion 400 extending from the display substrate 300 is L1, the dimension of the first side portion 210 is L2, the dimension of the cover film layer 500 extending from the display substrate 300 is L3, the thickness of the display substrate 300 is h, the thickness of the second protection portion 700 is h3, and the thickness of the first protection portion 400 is h4, so that L2 is L1+ h +0.2 mm. L3 ═ h + h3+ h4 ═ pi ═ 0.5 mm. Wherein α is a bending angle of the display device bending region.
The display device according to the first aspect of the present invention includes, but is not limited to, a mobile phone, a Personal Digital Assistant (PDA), a tablet computer, an electronic book, a television, a door lock, a smart phone, a console, and other devices with a display function.
Referring to fig. 10, fig. 10 is a partial cross-sectional view of the display device at another viewing angle. In some optional embodiments, the display device further includes a barrier 600, the barrier 600 is located at one side of the middle frame 100, and the barrier 600 is disposed near the binding area NA2 of the display device. Optionally, the cover film 500 is hermetically connected to the barrier 600, for example, the cover film 500 is hermetically connected to the barrier 600 through a glue layer, so that the cover can provide better protection for the second protection portion 200, the first protection portion 400, the side protection portion and the display substrate 300, and prevent impurities such as dust from entering the display device through a gap between the cover film 500 and the barrier 600.
Referring to fig. 11, fig. 11 is a flowchart illustrating a method for forming a display device according to a second aspect of the present invention. The display device may be the display device of any of the embodiments of the first aspect described above.
According to a second aspect of the present invention, there is provided a method for forming a display device, the method comprising:
step S101: a middle frame 100 is provided.
The middle frame 100 has a main body 110 and a hollow space 120 surrounded by the main body 110, the hollow space 120 is located in the display area AA, a surface of the main body 110 facing the display side of the display device is recessed to form a groove 111 communicated with the hollow space 120, and the groove 111 has a bottom surface 113 and a side wall surface 112 facing the hollow space.
Step S102: the second protection member 700 is disposed on the bottom surface 113 of the recess 111.
Optionally, in step S102, a second protection layer may be disposed in the groove 111, a portion of the second protection layer is attached to the bottom surface 113 to form a second protection portion 700, and another portion of the second protection layer is attached to the sidewall surface 112 to form the first sidewall 210.
The first side portion 210 is located on a surface of the display substrate 300 facing the non-binding area NA 1.
Step 103: the display substrate 300 is disposed on a side of the second protection part 700 facing away from the bottom surface 113, a gap exists between the display substrate 300 and the sidewall surface 112, and the display substrate 300 includes a display device layer 310 and a polarizer 320 located on a side of the display device layer 310 facing away from the second protection part 700.
Alternatively, when the second protective portion 700 and the first side portion 210 are formed by the second protective layer in step S102, the first side portion 210 is filled in the gap between the display substrate 300 and the sidewall surface 112.
Step S104: a first protection part 400 is disposed at a side of the polarizer 320 facing away from the display device layer 310, and the first protection part 400 and the second protection part 700 are connected to each other through the first side part 210 in a gap between the sidewall surface 113 and the display substrate 100.
Optionally, in step S104, a first protection layer may be disposed on a side of the polarizer 320 facing away from the display device layer 310, and the first protection layer is processed to form a first protection portion 400 and a second side portion 220, where the second side portion 220 can cover at least a side surface of the polarizer 320 facing the binding region NA 2.
Optionally, when the display substrate 300 includes the metal wiring layer 330, and the metal wiring layer 330 is located in the bundled area NA2, the surface of the display device layer 310 facing the bundled area NA2 is wrapped by the metal wiring layer 330. The second side portion 220 may cover a portion of the side of the display device facing the bonding region NA2 not covered by the metal wiring layer and cover a portion of the metal wiring layer 330, so that the second side portion 220 can provide protection to the metal wiring layer 330.
According to the display device formed by the molding method of the embodiment of the invention, the first protective portion 400 and the second protective portion 700 are connected to each other by the first side portion 210 in the gap between the sidewall surface 113 and the display substrate 100. The contact area between the display substrate 300 and the external environment, that is, the contact area between the polarizer 320 and the display device layer 310 and the external environment, can be reduced, so as to improve the influence of water and oxygen intrusion on the display substrate 300 and improve the yield of the display device.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way 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 (10)
1. A display device having a display area and a non-display area, the non-display area including a binding area and a non-binding area, the display device comprising:
the display substrate comprises a display device layer and a polarizer positioned on one side of the display device layer, and the display substrate is provided with a first surface, a second surface and a peripheral side surface, wherein the first surface and the second surface are oppositely arranged in the thickness direction of the display substrate, and the peripheral side surface is connected with the first surface and the second surface;
the protective layer comprises a side protective part, and the side protective part wraps at least part of the peripheral side face.
2. The display device according to claim 1, wherein the protective layer further comprises a first protective portion connected to the side protective portion and located on a side of the polarizer away from the display device layer;
preferably, the first protection portion is disposed on the first surface, and the first surface is located on a display side of the display substrate.
3. The display device according to claim 2,
the display substrate comprises a metal wiring layer located in the binding region; the peripheral side surface comprises a first peripheral side surface, the first peripheral side surface comprises the display device layer, the surface, facing the unbound region, of the polarizer and the surface, facing the bound region, of the polarizer, and the side protection part wraps the first peripheral side surface and is connected to the first protection part.
4. The display device according to claim 3, wherein at least part of the side protective portion covers the metal wiring layer.
5. The display device according to claim 2, wherein the protective layer further comprises a second protective portion connected to the side protective portion and disposed on the second surface, which is a surface of the display substrate facing away from the first protective portion;
preferably, the second protection portion is located in the non-display region.
6. The display device according to claim 5, further comprising:
the display device comprises a middle frame, a display substrate and a display substrate, wherein the middle frame is provided with a body part and a hollow space formed by enclosing the body part, the hollow space is positioned in the display area, the surface of the body part facing the display side of the display device is recessed to form a groove communicated with the hollow space, and the display substrate is arranged on the middle frame;
and part of the side protection part is attached between the side wall surface of the groove facing the hollow part and the peripheral side surface of the display substrate, and the second protection part is attached between the bottom surface of the groove facing the display substrate and the second surface.
7. The display device according to claim 6, further comprising: the cover plate film layer is arranged on one side, away from the polaroid, of the first protection part, and the distance from one side, away from the display area, of the cover plate film layer to the side wall surface of the groove is smaller than the distance from one side, away from the display area, of the first protection part to the side wall surface of the groove;
preferably, the cover plate film layer is connected to the side wall surface of the groove in a sealing manner;
preferably, the non-display area of the display device is a bending area, and a distance L3 between a side of the cover film layer away from the display area and the peripheral side surface of the display substrate satisfies the following relationship:
L3≥(h+h3+h4)*π*α
wherein h is a thickness of the display substrate, h3 is a thickness of the first protective portion, and h4 is a thickness of the second protective portion; alpha is the bending angle of the display device bending area;
preferably, L3 ═ (h + h3+ h4) × pi × α +0.5 mm.
8. The display device according to claim 5, wherein at least a part of the side protective portion and the first protective portion are integrally formed;
and/or at least part of the side protection part and the second protection part are integrally formed;
preferably, the peripheral side surface comprises a first sub surface and a second sub surface, the first sub surface is located on one side of the display substrate facing the non-binding region, and the second sub surface is located on one side of the display substrate facing the binding region;
the side protection part comprises a first side part and a second side part, the first side part wraps the first sub-surface, the second side part wraps the second sub-surface,
the first side part and the second protection part are integrally formed, or the first side part and the first protection part are integrally formed, or part of the first side part and the first protection part are integrally formed, and part of the first side part and the second protection part are integrally formed;
the second side portion and the first protection portion are integrally formed.
9. The display device according to claim 2, wherein an extension length L2 of the side protective portion in a thickness direction of the display substrate is not less than h, where h is a sum of thicknesses of the display device layer and the polarizer in the thickness direction of the display substrate;
preferably, L2 is more than or equal to L1+ h, wherein, in the extending direction of the film layer parallel to the display substrate, L1 is the distance between one side of the first protection part far away from the display area and the peripheral side surface of the display substrate opposite to the first protection part;
preferably, L2 ═ L1+ h +0.2 mm;
preferably, L1 is greater than or equal to 0.2 mm.
10. A method of forming a display device, comprising:
providing a middle frame, wherein the middle frame is provided with a body part and a hollow space enclosed by the body part, the surface of the body part facing to the display side of the display device is recessed to form a groove communicated with the hollow space, and the groove is provided with a bottom surface and a side wall surface facing to the hollow space;
a second protection part is arranged on the bottom surface of the groove;
arranging a display substrate on one side of the second protection part, which is far away from the bottom surface, wherein a gap exists between the display substrate and the side wall surface, and the display substrate comprises a display device layer and a polarizer positioned on one side of the display device layer, which is far away from the second protection part;
and arranging a first protection part on one side of the polarizer, which is far away from the display device layer, wherein the first protection part and the second protection part are connected with each other through a first side part in a gap between the side wall surface and the display substrate.
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| CN202110130705.5A CN112925055A (en) | 2021-01-29 | 2021-01-29 | Display device and method for forming display device |
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| CN202110130705.5A CN112925055A (en) | 2021-01-29 | 2021-01-29 | Display device and method for forming display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022160846A1 (en) * | 2021-01-29 | 2022-08-04 | 昆山国显光电有限公司 | Display panel |
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