CN210156378U - Display mother board and display panel - Google Patents
Display mother board and display panel Download PDFInfo
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- CN210156378U CN210156378U CN201921243657.5U CN201921243657U CN210156378U CN 210156378 U CN210156378 U CN 210156378U CN 201921243657 U CN201921243657 U CN 201921243657U CN 210156378 U CN210156378 U CN 210156378U
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Abstract
The utility model discloses a show mother board and display panel, this shows mother board includes: a carrier substrate; the flexible substrate is positioned on the bearing substrate; the display panel layer is positioned on one side, away from the bearing substrate, of the flexible substrate; the display panel layer comprises a plurality of sub panel areas arranged in an array; the packaging layer is positioned on one side, away from the bearing substrate, of the display panel layer, and the packaging layer exposes out of the gap between the adjacent sub-panel areas; the rotating plate is positioned on one side of the packaging layer, which is far away from the display panel layer; wherein the rotating plate comprises a sticky area and a non-sticky area; the vertical projection of the viscous area on the display panel layer is positioned in the area of the gap between the adjacent sub-panel areas. The rotating plate in the display mother board provided by the embodiment of the utility model can protect the packaging layer and avoid the damage of the subsequent process to the packaging layer; and because the rotating plate is not sticky in the sub-panel area, when the rotating plate is separated from the display mother board, the risk of separating an organic light emitting layer and an electrode layer of a display panel layer is reduced.
Description
Technical Field
The embodiment of the utility model provides a relate to and show technical field, especially relate to a show mother board and display panel.
Background
The Organic Light-Emitting Diode (OLED) device has the advantages of simple preparation process, low cost, low power consumption, high brightness, easy realization of flexible display, and the like, thereby having wide application prospect.
In the prior art, when an OLED device is manufactured, a display mother board is generally manufactured first, and then the display mother board is cut to form a plurality of OLED devices. Since the organic light emitting materials and electrodes in an OLED device are particularly sensitive to water and oxygen, too much moisture or oxygen content will affect the lifetime of the OLED device. In the prior art, a thin film encapsulation method is often used to ensure that the organic light-emitting material and the electrode in the OLED device are not corroded by water vapor and oxygen in the external environment.
However, in the process of manufacturing the display mother board, the thin film encapsulation layer is easily damaged in subsequent processes after the encapsulation layer is prepared, such as the processes of peeling the carrier substrate and attaching the support film, and the like, thereby affecting the service life and the display effect of the OLED device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a show mother board and display panel to realize protecting the encapsulation layer, reduce the effect of the organic luminescent layer and the electrode layer separation risk on display panel layer.
In a first aspect, an embodiment of the present invention provides a display motherboard, which includes:
a carrier substrate;
the flexible substrate is positioned on the bearing substrate;
the display panel layer is positioned on one side, away from the bearing substrate, of the flexible substrate; the display panel layer comprises a plurality of sub panel areas arranged in an array;
the packaging layer is positioned on one side, away from the bearing substrate, of the display panel layer, and the packaging layer exposes out of the gap between the adjacent sub-panel areas;
the rotating plate is positioned on one side, away from the display panel layer, of the packaging layer;
wherein the rotating plate comprises a sticky area and a non-sticky area; and the vertical projection of the viscous area on the display panel layer is positioned in the area of the gap between the adjacent sub-panel areas.
Further, the rotating plate comprises a base layer and an adhesive layer positioned on one side of the base layer facing the flexible substrate; the adhesive layer is located in the adhesive region.
Further, the sub-panel region includes a light emitting structure; the light emitting structure comprises a first electrode layer, an organic light emitting layer and a second electrode layer;
the thickness of the adhesive layer is L1, the thickness of the packaging layer is L2, and the thickness of the organic light-emitting layer is L3, wherein L1 > L2+ L3.
Further, the thickness of the adhesive layer is L1 ≥ 18 μm.
Further, the rotating plate includes a first portion and a second portion; the first part and the second part are arranged on the same layer;
the first portion is located in the adhesive area and the second portion is located in the non-adhesive area.
Further, the adhesion between the adhesive layer and the base layer is F1, the adhesion of the adhesive layer to the flexible substrate is F2, wherein F1 > F2.
Further, the adhesion between the adhesive layer and the base layer is F1, the weight of the flexible substrate is F4, wherein F1 > F4.
Further, the substrate layer is a transparent substrate layer.
Further, the rotating plate comprises a flexible rotating plate.
In a second aspect, the embodiments of the present invention further provide a display panel, which is formed by cutting the display mother board according to the first aspect.
The utility model provides a display motherboard includes: the bearing substrate, be located the flexible substrate on the bearing substrate, be located the display panel layer that flexible substrate deviates from bearing substrate one side, the display panel layer includes the sub panel district of a plurality of array arrangements, is located the encapsulation layer that the display panel layer deviates from bearing substrate one side, and the encapsulation layer exposes the clearance between the adjacent sub panel district, is located the commentaries on classics board that the encapsulation layer deviates from display panel layer one side. The rotating plate can support the whole display mother board, so that the bearing substrate can be peeled off at the moment, and the flexible substrate is exposed, so that a support film can be attached to the flexible substrate in the following process; meanwhile, the rotating plate is positioned on one side, away from the display panel layer, of the packaging layer, and can protect the packaging layer in the processes of stripping the bearing substrate and attaching the support film, so that the damage of the processes of stripping the bearing substrate and attaching the support film to the packaging layer is prevented. In addition, because the viscidity area of commentaries on classics board is located the interval place region between the adjacent sub panel district at the vertical projection of display panel layer, changes the board and does not have the viscidity in sub panel district promptly for when changeing the board and lie in the separation of display mother board, reduced the risk that the organic luminescent layer and the electrode layer of display panel layer separated, realize protecting the encapsulation layer, reduced the effect of the organic luminescent layer and the electrode layer separation risk of display panel layer.
Drawings
Fig. 1 is a cross-sectional view of a display motherboard according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a rotating plate according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of another display mother board according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the prior art, when a display panel is manufactured, a display mother board is generally manufactured first in order to improve production efficiency, and then the display mother board is cut to obtain a plurality of display panels. The process of preparing the display panel is as follows: firstly, preparing each functional film layer included by a display panel on a glass substrate; then preparing a thin film packaging layer on the functional film layer; the protective film is attached to the film packaging layer, so that the film packaging layer is protected from being influenced by factors such as particles in the subsequent process, and the packaging effect is better guaranteed; separating the glass substrate from the display mother board; attaching a support film; cutting to form a display panel; removing the protective film; and finally attaching the polaroid. Because the protective film has viscosity and the adhesion between the organic light-emitting layer and the electrode layer is very weak, the organic light-emitting layer and the electrode layer are easily separated when the protective film is removed, and further abnormal display is caused; in addition, since the protective film is removed after the cutting is completed, an expensive turnaround protective film that can be used for laser cutting needs to be used and discarded after the cutting is completed, increasing the manufacturing cost of the display mother substrate. Based on the utility model, the display motherboard is provided to avoid the separation of the organic luminescent layer and the electrode layer, thereby causing the abnormal display phenomenon; in addition, the manufacturing cost of the display motherboard can be reduced. The method comprises the following specific steps:
fig. 1 is a schematic cross-sectional structure diagram of a display mother board provided by an embodiment of the present invention, fig. 2 is a schematic plan structure diagram of a rotating plate provided by an embodiment of the present invention, as shown in fig. 1 and fig. 2, the display mother board includes: a carrier substrate 10; a flexible substrate 20 on the carrier substrate 10; a display panel layer 30 positioned on the side of the flexible substrate 20 away from the carrier substrate 10; the display panel layer 30 includes a plurality of sub panel regions 31 arranged in an array; the packaging layer 40 is positioned on one side, away from the bearing substrate 20, of the display panel layer 30, and the packaging layer 40 exposes gaps between the adjacent sub-panel regions 31; a rotating plate 50 positioned on the side of the packaging layer 40 away from the display panel layer 30; wherein the rotating plate 50 comprises an adhesive area AA and a non-adhesive area AB; the perpendicular projection of the adhesive area AA on the display panel layer 50 is located in the area of the gap between the adjacent sub-panel areas 31.
The embodiment of the utility model provides a prepare at packaging layer 40 and accomplish the back, deviate from the attached board 50 that changes in display panel layer 30 one side at packaging layer 40, owing to change board 50 and have the supporting role, so can separate load-bearing substrate 10 this moment, support the display mother board through changeing board 50, so that follow-up preparation supports membrane (not shown in the figure), change board 50 simultaneously and can also peel off load-bearing substrate and attached support membrane technology, protect the packaging layer, prevent to peel off load-bearing substrate and the attached damage of supporting membrane technology to the packaging layer. When the support film is prepared, the rotation plate 50 may be separated from the display mother substrate since the support film may support the display mother substrate. Since the rotating plate 50 includes the adhesive area AA and the non-adhesive area AB, and the vertical projection of the adhesive area AA on the display panel layer 50 is located in the area of the gap between the adjacent sub-panel areas 31, i.e. the rotating plate 50 has no adhesion in the sub-panel areas 31, the risk of separation of the organic light emitting layer and the electrode layer of the display panel layer is reduced when the rotating plate 50 is separated from the display mother board. After the rotating plate 50 is separated from the display mother board, a polarizer (not shown) is attached to the side of the encapsulation layer 40 away from the display panel layer 30, and then the display panel is formed by cutting. Because the polarizer plays a role in protecting the packaging layer 40 in the cutting process, the packaging layer 40 is prevented from being influenced by factors such as particles and the like in the cutting process. Meanwhile, since the rotating plate 50 is separated from the display mother substrate before cutting, the rotating plate 50 is not cut, and the rotating plate 50 can be recycled and cleaned for the next use.
The utility model provides a display motherboard includes: the bearing substrate, be located the flexible substrate on the bearing substrate, be located the display panel layer that flexible substrate deviates from bearing substrate one side, the display panel layer includes the sub panel district of a plurality of array arrangements, is located the encapsulation layer that the display panel layer deviates from bearing substrate one side, and the encapsulation layer exposes the clearance between the adjacent sub panel district, is located the commentaries on classics board that the encapsulation layer deviates from display panel layer one side. The rotating plate can support the whole display mother board, so that the bearing substrate can be peeled off at the moment, and the flexible substrate is exposed, so that a support film can be attached to the flexible substrate in the following process; meanwhile, the rotating plate is positioned on one side, away from the display panel layer, of the packaging layer, and can protect the packaging layer in the processes of stripping the bearing substrate and attaching the support film, so that the damage of the processes of stripping the bearing substrate and attaching the support film to the packaging layer is prevented. In addition, because the viscidity area of commentaries on classics board is located the interval place region between the adjacent sub panel district at the vertical projection of display panel layer, changes the board and does not have the viscidity in sub panel district promptly for when changeing the board and lie in the separation of display mother board, reduced the risk that the organic luminescent layer and the electrode layer of display panel layer separated, realize protecting the encapsulation layer, reduced the effect of the organic luminescent layer and the electrode layer separation risk of display panel layer. In addition, the rotating plate replaces a protective film in the prior art, can be recycled, avoids using an expensive protective film for laser cutting, and reduces the preparation cost of the display mother plate.
On the basis of the above solution, the rotating plate 50 may optionally comprise a flexible rotating plate, for example. The flexible rotating plate can be applied to the preparation of a flexible display motherboard, for example. And the rotating plate 50 has recycling and cleanability.
Optionally, with continued reference to fig. 1 and 2, the rotating plate 50 includes a base layer 52 and an adhesive layer 51 on a side of the base layer 52 facing the flexible substrate 20; adhesive layer 51 is located in adhesive area AA.
The base layer 52 may include, for example, a glass base layer, a polyvinyl chloride base layer, a polyethylene base layer, or the like. The adhesive layer 51 may comprise, for example, a pressure sensitive adhesive or glue or the like. It will be understood by those skilled in the art that the substrate layer 52 includes but is not limited to the above examples, as long as the encapsulation layer can be protected and has a supporting function. The adhesive layer 51 includes, but is not limited to, the above examples as long as it can have adhesiveness, is resistant to high temperature, and is not easily peeled off.
Preferably, substrate layer 52 comprises a transparent substrate layer. The transparent substrate layer can be made of materials such as polyester resin. When the substrate layer 52 is a transparent substrate layer, the rotating plate 50 is separated from the display mother plate, so that the particles can be easily recognized during the cleaning process after the rotating plate is recovered. Since the encapsulation layer 40 is thin, if the particles on the rotating plate 50 are not cleaned during the cleaning process, the encapsulation layer 40 will be damaged when the rotating plate 50 is used next time. The embodiment of the utility model provides an adopt be transparent stratum basale, when the microparticle, can observe, and then continue to wash changeing board 50, until there being no microparticle, reduced the damage of the microparticle in changeing board 50 to encapsulated layer 40.
Optionally, the rotating plate 50 may further include a first portion and a second portion integrally formed without an interface; the first part and the second part are arranged in layers, with the first part being located in the adhesive area AA and the second part being located in the non-adhesive area AB.
Wherein the first part and/or the second part can be modified such that there is no interface between the first part and the second part to form an integral structure, but the first part is tacky and the second part is not tacky. For example, the entire adhesive transfer plate 50 may be formed, and then the second portion of the non-adhesive area AB may be chemically treated to make the second portion of the transfer plate 50 non-adhesive. It is understood that the modification of the first part and/or the second part is not limited to this example, and any substrate in which the first part and the second part are integrated without an interface and the first part and the second part are disposed on the same layer, and the first part has viscosity and the second part has no viscosity falls within the scope of the present invention.
On the basis of the above solution, optionally, fig. 3 is a schematic cross-sectional structure diagram of another display mother board according to an embodiment of the present invention, as shown in fig. 3, the sub-panel region 31 includes a light emitting structure 310; the light emitting structure 310 includes a first electrode layer 311, an organic light emitting layer 312, and a second electrode layer 313; the thickness of the adhesive layer 51 is L1, the thickness of the encapsulation layer 40 is L2, and the thickness of the organic light emitting layer 312 is L3, wherein L1 > L2+ L3.
According to the technical scheme, when the thickness of the adhesive layer is larger than the sum of the thicknesses of the packaging layer and the organic light emitting layer, the rotating plate has multiple utilizability, for example, the rotating plate can be used for at least more than 2000 times, the adhesive requirement is still met, and the preparation cost of the display mother plate is reduced.
On the basis of the above-mentioned solution, optionally, with continued reference to FIG. 3, the thickness of the adhesive layer 51 is L1 ≧ 18 μm.
According to the technical scheme, when the viscous layer of the rotating plate is thick enough, the rotating plate has multiple utilizability, the viscous requirement is still met after the rotating plate is utilized for multiple times, and the preparation cost of the display mother plate is reduced.
Based on the above solution, optionally, the adhesion force between the adhesive layer 51 and the base layer 52 is F1, and the adhesion force between the adhesive layer 51 and the flexible substrate 20 is F2, where F1 > F2.
In the case that the adhesion between the adhesive layer 51 and the base layer 52 is sufficient, the adhesion between the adhesive layer 51 and the flexible substrate 20 should be as small as possible, so that the flexible rotating plate 50 is easily separated from the flexible substrate 20.
According to the technical scheme, the adhesion force between the adhesion layer and the base layer is larger than the adhesion force between the adhesion layer and the flexible substrate, so that the flexible rotating plate and the flexible substrate are easily separated, the rotating plate can be conveniently used for multiple times, and the preparation cost of the display mother plate is reduced.
Based on the above solution, optionally, the adhesion force between the adhesive layer 51 and the base layer 52 is F1, and the weight of the flexible substrate 20 is F4, wherein F1 > F4.
This technical scheme is greater than the weight of flexible substrate through the adhesion that sets up between viscous layer and the stratum basale for change the board and can not make viscous layer and stratum basale separation because of flexible substrate is too heavy, be convenient for change the board and utilize many times, reduce the preparation cost of display mother board.
Optionally, the adhesion between the adhesive layer 51 and the base layer 52 is much greater than the adhesion of the adhesive layer 51 itself, so that the adhesive layer 51 on the rotating plate 50 remains intact after multiple uses.
The embodiment of the utility model provides a display panel is still provided, fig. 4 is the embodiment of the utility model provides a display panel's schematic structure diagram. As shown in fig. 4, the display panel 200 is formed by cutting the display mother substrate in the above embodiment. For example, the display panel 200 may be applied to an electronic display device such as a mobile phone, a computer, or a television.
The utility model provides a display panel is owing to adopt the cutting of the display mother board in the above-mentioned embodiment to form, so the utility model provides a display panel's encapsulation layer has obtained fine protection, and then has improved display panel's life-span and display effect. In addition, the viscous area of the rotating plate in the process of preparing the display mother board is positioned in the area of the gap between the adjacent sub-panel areas in the vertical projection of the display panel layer, namely the rotating plate is not viscous in the sub-panel areas, so that when the rotating plate is separated from the display mother board, the risk of separating an organic light emitting layer and an electrode layer of the display panel layer is reduced, the organic light emitting layer in the obtained display panel is in good contact with the electrode layer, and the display effect is improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A display motherboard, comprising:
a carrier substrate;
the flexible substrate is positioned on the bearing substrate;
the display panel layer is positioned on one side, away from the bearing substrate, of the flexible substrate; the display panel layer comprises a plurality of sub panel areas arranged in an array;
the packaging layer is positioned on one side, away from the bearing substrate, of the display panel layer, and the packaging layer exposes out of the gap between the adjacent sub-panel areas;
the rotating plate is positioned on one side, away from the display panel layer, of the packaging layer;
wherein the rotating plate comprises a sticky area and a non-sticky area; and the vertical projection of the viscous area on the display panel layer is positioned in the area of the gap between the adjacent sub-panel areas.
2. The display motherboard of claim 1, wherein the rotation plate comprises a base layer and an adhesive layer on a side of the base layer facing the flexible substrate; the adhesive layer is located in the adhesive region.
3. The display mother board of claim 2, wherein the sub-panel region includes a light emitting structure; the light emitting structure comprises a first electrode layer, an organic light emitting layer and a second electrode layer;
the thickness of the adhesive layer is L1, the thickness of the packaging layer is L2, and the thickness of the organic light-emitting layer is L3, wherein L1 > L2+ L3.
4. The display mother panel according to claim 3, wherein the adhesive layer has a thickness L1 ≧ 18 μm.
5. The display motherboard of claim 1, wherein the rotation plate comprises a first portion and a second portion; the first part and the second part are arranged on the same layer;
the first portion is located in the adhesive area and the second portion is located in the non-adhesive area.
6. The display motherboard of claim 2, wherein the adhesion between the adhesive layer and the base layer is F1, the adhesion of the adhesive layer to the flexible substrate is F2, wherein F1 > F2.
7. The display motherboard of claim 2, wherein the adhesion between the adhesive layer and the base layer is F1, the weight of the flexible substrate is F4, wherein F1 > F4.
8. The display master according to claim 2, wherein the base layer is a transparent base layer.
9. The display motherboard of claim 1, wherein the rotation plate comprises a flexible rotation plate.
10. A display panel cut out using the display mother substrate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921243657.5U CN210156378U (en) | 2019-08-02 | 2019-08-02 | Display mother board and display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921243657.5U CN210156378U (en) | 2019-08-02 | 2019-08-02 | Display mother board and display panel |
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| CN210156378U true CN210156378U (en) | 2020-03-17 |
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| CN201921243657.5U Active CN210156378U (en) | 2019-08-02 | 2019-08-02 | Display mother board and display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540841A (en) * | 2020-04-30 | 2020-08-14 | 合肥维信诺科技有限公司 | Display panel, display mother board and manufacturing method of display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540841A (en) * | 2020-04-30 | 2020-08-14 | 合肥维信诺科技有限公司 | Display panel, display mother board and manufacturing method of display panel |
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Address after: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
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