CN114122099A - Display substrate, preparation method thereof and display device - Google Patents
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- CN114122099A CN114122099A CN202111413167.7A CN202111413167A CN114122099A CN 114122099 A CN114122099 A CN 114122099A CN 202111413167 A CN202111413167 A CN 202111413167A CN 114122099 A CN114122099 A CN 114122099A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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Abstract
A display substrate comprises a base, the base comprises a display area and a peripheral area surrounding the display area, the display substrate comprises a water absorption structure layer arranged in the peripheral area, the water absorption structure layer comprises a plurality of water absorption units which are arranged at intervals along the direction from far away from the display area to close to the display area, and the display substrate further comprises a water blocking structure layer covering the water absorption structure layer. The scheme that this embodiment provided, from keeping away from the outside of display area and beginning, the steam that gets into display substrates is absorbed by the unit that absorbs water, absorbs water the back by the structural layer separation that blocks water, and the steam that continues to get into is absorbed by the unit that absorbs water next, absorbs water the back by the structural layer separation that blocks water, through the separation of a plurality of units that absorb water and the structural layer that blocks water, isolated steam that can be fine improves the encapsulation effect.
Description
Technical Field
The present disclosure relates to display technologies, and more particularly, to a display substrate, a method for manufacturing the same, and a display device.
Background
An Organic Light Emitting Diode (OLED) is an active Light Emitting display device, and has the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, fast response speed, bright color, thinness, flexibility, and the like. With the continuous development of display technology, the OLED technology is applied to various display devices more and more, and becomes the mainstream of the current market.
In the display field, the packaging problem is always a major problem in the industry, since the OLED display technology adopts an Organic Light Emitting material to emit Light, the Organic Light Emitting material is easily reacted with water and oxygen, and a small amount of water vapor and oxygen can damage the Organic Light Emitting material, so that the Light Emitting performance of the OLED panel is deteriorated, and an Organic Light Emitting Diode (OLED) product is very sensitive to water vapor. The OLED panel thus has very high requirements for packaging.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the disclosure provides a display substrate, a preparation method thereof and a display device, and the packaging effect is improved.
The embodiment of the present disclosure provides a display substrate, display substrate includes the base, the base includes the display area and surrounds the peripheral district of display area, display substrate is including setting up the absorbent structure layer in peripheral district, absorbent structure layer includes along keeping away from the display area is to being close to a plurality of absorbent unit that the display area direction interval set up, display substrate still includes the cover absorbent structure layer's the structural layer that blocks water.
In an exemplary embodiment, the peripheral region includes a gate driving circuit region provided with signal traces and a gate driving circuit, and the water absorption structure layer includes a plurality of first water absorption units disposed between the gate driving circuit region and the display region.
In an exemplary embodiment, among the plurality of first water absorbing units, at least two adjacent first water absorbing units have a pitch in an orthogonal projection of the substrate, which is 2 to 3 times the pitch in an orthogonal projection of the remaining adjacent first water absorbing units on the substrate.
In an exemplary embodiment, the water absorption structure layer further includes a second water absorption unit disposed outside the gate driving circuit region and away from the display region.
In an exemplary embodiment, the water absorption structure layer further includes a third water absorption unit disposed on a side of the gate driving circuit away from the substrate, and an orthogonal projection of the third water absorption unit on the substrate overlaps with an orthogonal projection of the gate driving circuit on the substrate.
In an exemplary embodiment, the display substrate further includes a pixel defining layer disposed at the display region to define a pixel opening region; the water absorption unit and the pixel definition layer are arranged on the same layer.
In an exemplary embodiment, the water blocking structure layer includes an encapsulation layer, and an orthographic projection of the display area and the first water absorbing unit on the substrate is located within an orthographic projection of the encapsulation layer on the substrate.
In an exemplary embodiment, the water blocking structure layer includes a frame sealing adhesive layer, and an orthogonal projection of the second water absorption unit on the substrate is located in an orthogonal projection of the frame sealing adhesive layer on the substrate.
An embodiment of the present disclosure provides a display device, including the display substrate according to any one of the embodiments.
An embodiment of the present disclosure provides a method for manufacturing a display substrate, where the display substrate includes a base, the base includes a display area and a peripheral area surrounding the display area, and the method includes:
forming a water absorption structure layer in the peripheral area of the substrate, wherein the water absorption structure layer comprises a plurality of water absorption units which are arranged at intervals along the direction from far away from the display area to close to the display area;
and forming a water blocking structure layer covering the water absorbing structure layer on one side of the water absorbing structure layer, which is far away from the substrate.
The display substrate comprises a substrate, wherein the substrate comprises a display area and a peripheral area surrounding the display area, the display substrate comprises a water absorption structure layer arranged in the peripheral area, the water absorption structure layer comprises a plurality of water absorption units which are arranged at intervals along the direction from far away from the display area to close to the display area, and the display substrate further comprises a water blocking structure layer covering the water absorption structure layer. The scheme that this embodiment provided, from keeping away from the outside of display area and beginning, the steam that gets into display substrates is absorbed by the unit that absorbs water, absorbs water the back by the structural layer separation that blocks water, and the steam that continues to get into is absorbed by the unit that absorbs water next, absorbs water the back by the structural layer separation that blocks water, through the separation of a plurality of units that absorb water and the structural layer that blocks water, isolated steam that can be fine improves the encapsulation effect, improves product life.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the disclosure may be realized and attained by the structure particularly pointed out in the written description and drawings.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosed embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic cross-sectional view of a display substrate provided in accordance with an exemplary embodiment;
FIG. 2 is a schematic view of a first water absorbing unit layout provided in an exemplary embodiment;
FIG. 3 is a schematic cross-sectional view of a display substrate provided in accordance with another exemplary embodiment;
fig. 4 is a schematic plan view of a display substrate according to an exemplary embodiment.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of conflict, the embodiments of the present disclosure and the features of the embodiments may be arbitrarily combined with each other.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
In the drawings, the size of each component, the thickness of layers, or regions may be exaggerated for clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to the dimensions, and the shapes and sizes of the respective components in the drawings do not reflect a true scale. Further, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or numerical values shown in the drawings.
The ordinal numbers such as "first", "second", "third", etc., in this disclosure are provided to avoid confusion among the constituent elements, and do not indicate any order, number, or importance.
In the present disclosure, for convenience, terms indicating orientation or positional relationship such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are used to explain positional relationship of constituent elements with reference to the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present disclosure. The positional relationship of the components is changed as appropriate in accordance with the direction in which each component is described. Therefore, the words described in the disclosure are not limited thereto, and may be replaced as appropriate.
In this disclosure, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically stated or limited. For example, it may be a fixed connection, or a removable connection, or an integral connection; can be a mechanical connection, or an electrical connection; either directly or indirectly through intervening components, or both may be interconnected. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the present disclosure, a transistor refers to an element including at least three terminals of a gate electrode, a drain electrode, and a source electrode. The transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. In the present disclosure, the channel region refers to a region through which current mainly flows.
In the present disclosure, "electrically connected" includes a case where constituent elements are connected together by an element having some kind of electrical action. The "element having a certain electric function" is not particularly limited as long as it can transmit and receive an electric signal between connected components. Examples of the "element having some kind of electric function" include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, other elements having various functions, and the like.
In the present disclosure, "parallel" means a state in which an angle formed by two straight lines is-10 ° or more and 10 ° or less, and therefore, includes a state in which the angle is-5 ° or more and 5 ° or less. The term "perpendicular" refers to a state in which the angle formed by two straight lines is 80 ° or more and 100 ° or less, and therefore includes a state in which the angle is 85 ° or more and 95 ° or less.
In the present disclosure, "film" and "layer" may be interchanged with one another. For example, the "conductive layer" may be sometimes replaced with a "conductive film". Similarly, the "insulating film" may be replaced with an "insulating layer".
The "a and B are disposed in the same layer" in the present disclosure means that a and B are simultaneously formed by the same patterning process.
Fig. 1 is a schematic cross-sectional view of a display substrate according to an exemplary embodiment. As shown in fig. 1, the display substrate includes a substrate 1, the substrate 1 includes a display area 100 and a peripheral area 200 surrounding the display area, the display substrate includes a water-absorbing structure layer disposed in the peripheral area 200, the water-absorbing structure layer includes a plurality of water-absorbing units disposed at intervals along a direction from a distance from the display area to a direction close to the display area, and the display substrate further includes a water-blocking structure layer covering the water-absorbing structure layer.
The scheme that this embodiment provided, from keeping away from the outside of display area and beginning, the steam that gets into display substrates is absorbed by the unit that absorbs water, absorbs water the back by the structural layer separation that blocks water, and the steam that continues to get into is absorbed by the unit that absorbs water next, absorbs water the back by the structural layer separation that blocks water, through the separation of a plurality of units that absorb water and the structural layer that blocks water, isolated steam that can be fine improves the encapsulation effect, improves product life.
In an exemplary embodiment, the peripheral region 200 may include a gate driving circuit region 201 in which a gate driving circuit and signal traces are disposed, and the water absorption structure layer may include a plurality of first water absorption units 5 disposed between the gate driving circuit region 201 and the display region 100. I.e. the first water-absorbing unit 5 is arranged in the area 202. The display region 100 may include a plurality of sub-pixels including a pixel driving circuit that provides a gate driving signal to the pixel driving circuit. The signal traces may include various signal traces such as power lines, clock signal lines, etc., which provide the gate driving circuits with the required signals. The signal traces are disposed on a side of the gate driving circuit away from the display area 100.
In an exemplary embodiment, the display substrate may further include a pixel defining layer disposed on the display area 100 to define a pixel opening area; the water absorption unit may be disposed in the same layer as the pixel defining layer. For example, the display substrate may include a driving structure layer disposed on the substrate, and a light emitting structure layer disposed on a side of the driving structure layer away from the substrate 1, and the light emitting structure layer may include, for example, a first electrode, a pixel defining layer, an organic light emitting layer, and a second electrode sequentially disposed from a substrate approaching direction to a substrate departing direction; in this embodiment, the water absorption unit and the pixel definition layer are disposed on the same layer, so that the manufacturing process can be simplified, and the cost can be reduced. However, the embodiments of the present disclosure are not limited thereto, and the water absorbing unit may be disposed at a different layer from the pixel defining layer.
In an exemplary embodiment, the water absorbing unit may be made of polyimide, acryl, polyethylene terephthalate, or the like.
In an exemplary embodiment, the water blocking structure layer may include an encapsulation layer 9, and an orthogonal projection of the display area 100 and the first water absorbing unit 5 on the substrate 1 is located within an orthogonal projection of the encapsulation layer 9 on the substrate 1. That is, in the present embodiment, the encapsulation layer 9 covers the display area 100 and the encapsulation layer 9 of the first water absorbing unit 5. After the first water absorption unit 5 absorbs water vapor, the water vapor is blocked by the packaging layer 9, and the water vapor finally entering the display area 100 is greatly reduced by absorbing the water vapor and blocking the water vapor for many times, so that the packaging effect is better.
In an exemplary embodiment, the encapsulation layer 9 may include: the first inorganic packaging layer and the second inorganic packaging layer are sequentially arranged from the direction close to the substrate 1 to the direction far away from the substrate 1; or a first inorganic packaging layer, an organic packaging layer and a second inorganic packaging layer which are arranged in sequence from the direction close to the substrate 1 to the direction far away from the substrate 1.
In an exemplary embodiment, in a plane parallel to the substrate, among the plurality of first water absorbing units 5, a pitch d1 of orthographic projections where at least two adjacent first water absorbing units 5 exist is 2 to 3 times a pitch d2 of orthographic projections of other adjacent first water absorbing units 5. The scheme that this embodiment provided, when there is great interval between the first water absorption unit 5, can be so that the better attached to basement 1 of encapsulated layer 9, avoid having the clearance between encapsulated layer 9 and the basement 1, steam continues to enter into display substrate from the clearance and is close to display area 100 one side, the scheme that this embodiment provided, the separation that can be better enters into the steam in the display substrate from keeping away from display area one side, improves the encapsulation effect. The disclosed embodiments are not limited in this regard and the spacings d1 and d2 may be in other relationships, for example, d1 may be greater than 3 times d2, or d1 may be equal to d 2.
Take 5 first water absorption units as an example. As shown in fig. 2, a first water absorbing unit 51 to a first water absorbing unit 55 are sequentially disposed from a position far from the display area 100 to a position near the display area 100, wherein a distance between the first water absorbing unit 51 and the first water absorbing unit 52, a distance between the first water absorbing unit 53 and the first water absorbing unit 54, and a distance between the first water absorbing unit 54 and the first water absorbing unit 55 may be the same, and are d2, and a distance d1 between the first water absorbing unit 52 and the first water absorbing unit 53 may be 2 to 3 times d 2. However, the embodiment of the present disclosure is not limited thereto, and the interval between the first water absorbing unit 51 and the first water absorbing unit 52 may be greater than the interval between the remaining adjacent first water absorbing units, or the interval between the first water absorbing unit 53 and the first water absorbing unit 54 may be greater than the interval between the remaining adjacent first water absorbing units.
In an exemplary embodiment, as shown in fig. 2, among the plurality of first suction units 5, except for the other first suction units 55 closest to the display area 100, the widths d3 of the orthographic projections of the first suction units 51 to 54 on the substrate 1 along the first direction x may be the same. The first direction x and the second direction y are perpendicular, and the second direction y may be an extending direction of the first water absorbing unit 5. Due to the limitation of etching technology, the width of the orthographic projection of the first water absorbing unit 55 closest to the display area 100 on the substrate 1 along the first direction x may be slightly larger than the width of the orthographic projection of other first water absorbing units on the substrate 1 along the first direction x. However, the embodiment of the present disclosure is not limited thereto, and the width of the orthographic projection of the first water absorption unit 5 on the substrate along the first direction x may be different. The width is the same, and the preparation is simpler.
In an exemplary embodiment, the absorbent structure layer may include 4 to 5 first absorbent units 5. By comprehensively considering the width of the first water absorption units 5 and the distance between the gate driving circuit area 201 and the display area 100, 4 to 5 first water absorption units 5 can absorb and block water vapor well.
In an exemplary embodiment, as shown in fig. 3, the water absorption structure layer may further include a second water absorption unit 6 disposed outside the gate driving circuit region 201 and on a side far from the display region 100. I.e. the second suction unit 6, arranged in the area 203. In this embodiment, by providing the second water absorption unit 6, the water vapor entering from the side of the display substrate is controlled at the side, and is isolated at the side of the display substrate by the water blocking structure layer. The disclosed embodiment is not limited thereto, and the second water absorption unit 6 may not be provided. Only one second water absorption unit 6 is illustrated in fig. 3, but the embodiment of the present disclosure is not limited thereto, and a plurality of second water absorption units 6 may be disposed at intervals.
In an exemplary embodiment, the water blocking structure layer may include a frame sealing adhesive layer 8, and an orthogonal projection of the second water absorbing unit 6 on the substrate 1 is located within an orthogonal projection of the frame sealing adhesive layer 8 on the substrate 1. In the solution provided by this embodiment, the frame sealing adhesive layer 8 is used to block water, so as to block water vapor from the side of the display substrate. Compared with the packaging adhesive layer in the related art, in the embodiment, the coverage of the sealing frame adhesive layer is slightly enlarged so as to cover the second water absorption unit 6.
In an exemplary embodiment, there may be an overlap between an orthogonal projection of the frame sealing adhesive layer 8 on the substrate 1 and an orthogonal projection of the encapsulation layer 9 on the substrate 1.
In an exemplary embodiment, the frame sealing adhesive layer 8 may be made of resin or the like.
In an exemplary embodiment, the display substrate may further include a cover plate 10 disposed on a side of the frame sealing adhesive layer 8 away from the base. The cover plate 10 may be a glass cover plate. The cover plate 10 is bonded through a frame sealing glue layer 8. The embodiments of the present disclosure are not limited thereto and may be applied to display substrates based on other packaging schemes.
In an exemplary embodiment, the extension directions of the plurality of first water absorbing units 5 in the orthographic projection of the substrate 1 may be parallel to each other, that is, a plurality of strips parallel to each other may be provided as the first water absorbing units 5. The disclosed embodiments are not so limited and may not be parallel. The first water absorbing unit 5 may be a continuous strip or may be separate segments.
In an exemplary embodiment, as shown in fig. 4, the plurality of first and second water absorption units 5 and 6 may be disposed on at least one of first and second sides of the display substrate, and the first and second sides may be opposite sides. The first side and the second side may both be provided with a gate driving circuit, or one of the first side and the second side may be provided with a gate driving circuit and the other side is not provided with a gate driving circuit. The first and second water absorbing units 5 and 6 may extend to the boundaries of the first and second sides near the third and fourth sides. The third side and the fourth side are two sides adjacent to the first side and the second side.
In an exemplary embodiment, as shown in fig. 1 and 3, the water absorbent structure layer may further include a third water absorbent unit 7 disposed in the gate driving circuit region 201.
In an exemplary embodiment, the third water absorption unit 7 may be disposed on a side of the gate driving circuit away from the substrate 1, and an orthogonal projection of the third water absorption unit 7 on the substrate overlaps with an orthogonal projection of the gate driving circuit. According to the scheme provided by the embodiment, the third water absorption unit 7 is arranged to protect the gate driving circuit, so that the gate driving circuit is prevented from being corroded by water vapor. However, the disclosed embodiment is not limited thereto, and the third water absorption unit 7 may not be provided.
In an exemplary embodiment, an orthographic projection of the third water absorption unit 7 on the substrate 1 is positioned in an orthographic projection of the encapsulation layer 9 on the substrate 1.
In an exemplary embodiment, an orthogonal projection of the third water absorption unit 7 on the substrate 1 is at least partially located outside an orthogonal projection of the signal trace on the substrate 1. According to the scheme provided by the embodiment, at least part of the signal wiring is not covered by the third water absorption unit 7, so that the maintenance is convenient.
In an exemplary embodiment, the substrate 1 may be a flexible substrate, or a glass substrate.
The display substrate shown in fig. 3 is merely an example. In another exemplary embodiment, one first water absorption unit 5 and one second water absorption unit 6 may be included.
An embodiment of the present disclosure provides a method for manufacturing a display substrate, where the display substrate includes a base, the base includes a display area and a peripheral area surrounding the display area, and the method includes:
forming a water absorption structure layer in the peripheral area of the substrate, wherein the water absorption structure layer comprises a plurality of water absorption units which are arranged at intervals along the direction from far away from the display area to close to the display area;
and forming a water blocking structure layer covering the water absorbing structure layer on one side of the water absorbing structure layer, which is far away from the substrate.
The preparation method that this embodiment provided, through the unit that absorbs water that a plurality of intervals set up, can absorb water, block water effectual separation steam through many times and get into the display area, improve the encapsulation effect, increase display substrate life-span.
The following further illustrates the technical solution of this embodiment through the manufacturing process of the display substrate of this embodiment. The "patterning process" in this embodiment includes processes of depositing a film, coating a photoresist, exposing a mask, developing, etching, and stripping the photoresist, and is a well-established manufacturing process in the related art. The "photolithography process" referred to in this embodiment includes coating film coating, mask exposure, and development, and is a well-established production process in the related art. The deposition may be performed by a known process such as sputtering, evaporation, chemical vapor deposition, etc., the coating may be performed by a known coating process, and the etching may be performed by a known method, which is not particularly limited herein. In the description of the present embodiment, it is to be understood that "thin film" refers to a layer of a material deposited or coated on a substrate. The "thin film" may also be referred to as a "layer" if it does not require a patterning process or a photolithography process throughout the fabrication process. If a patterning process or a photolithography process is required for the "thin film" in the entire manufacturing process, the "thin film" is referred to as a "thin film" before the patterning process, and the "layer" after the patterning process. The "layer" after the patterning process or the photolithography process includes at least one "pattern".
The embodiment provides a method for manufacturing a display substrate, which includes:
forming a driving structure layer on a substrate, the driving structure layer may include: the pixel drive circuit of setting in the display area, set up signal routing and gate drive circuit in peripheral district, pixel drive circuit and gate drive circuit include: an active layer, a source electrode, a drain electrode, and the like;
coating an insulating film, forming a first insulating layer pattern covering the driving structure layer in the display area through a mask exposure and development photoetching process, wherein the first insulating layer is provided with a through hole, and the drain electrode of the pixel driving circuit is exposed;
depositing a transparent conductive film, patterning the transparent conductive film through a patterning process to form an anode pattern, wherein the anode is connected with the drain electrode through a via hole;
coating a pixel defining film on the substrate on which the patterns are formed, and forming a pixel defining layer pattern, a first water absorption unit 5 pattern, a second water absorption unit 6 pattern and a third water absorption unit 7 pattern through a photoetching process; wherein the pixel defining layer is formed in the display area 100, and the first, second, and third water absorbing units 5, 6, and 7 are formed in the peripheral area 200.
Sequentially evaporating an organic light-emitting material and cathode metal on the substrate on which the pattern is formed to form an organic light-emitting layer and a cathode pattern; the organic light emitting layer and the cathode are formed in the display area 100;
depositing a first inorganic film on the substrate with the pattern to form a first packaging layer pattern; forming a second packaging layer pattern by adopting an ink-jet printing mode; depositing a second inorganic film to form a third packaging layer pattern, wherein the first packaging layer, the second packaging layer and the third packaging layer form the packaging layer 9;
coating frame sealing glue on the substrate 1 with the patterns, bonding the cover plate 10 with the substrate 1, and curing the frame sealing glue to form a frame sealing glue layer 8 pattern.
The preparation method of the embodiment can be realized by utilizing the existing mature preparation equipment, has small improvement on the existing process, and can be well compatible with the existing preparation process, so that the preparation method has the advantages of low manufacturing cost, easiness in process realization, high production efficiency, high yield and the like. The embodiment effectively solves the problem that the panel fails due to the invasion of the water vapor of the display substrate, has practical application value in improving the packaging effect of the display substrate, and has good application prospect.
The embodiment of the disclosure also provides a display device, which includes the display substrate of the foregoing embodiment. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a display substrates, its characterized in that, display substrates includes the base, the base includes the display area and surrounds the peripheral district of display area, display substrates is including setting up the structural layer that absorbs water of peripheral district, the structural layer that absorbs water includes along keeping away from the display area is to being close to a plurality of units that absorb water that the display area direction interval set up, display substrates still includes the structural layer that blocks water that covers the structural layer that absorbs water.
2. The display substrate of claim 1, wherein the peripheral region comprises a gate driving circuit region provided with signal traces and a gate driving circuit, and the water absorption structure layer comprises a plurality of first water absorption units arranged between the gate driving circuit region and the display region.
3. The display substrate of claim 2, wherein the distance between the orthographic projections of at least two adjacent first water absorbing units on the substrate is 2 to 3 times that between the orthographic projections of the rest adjacent first water absorbing units on the substrate.
4. The display substrate of claim 2, wherein the water-absorbing structure layer further comprises a second water-absorbing unit disposed outside the gate driving circuit region and away from the display region.
5. The display substrate of claim 2, wherein the water absorption structure layer further comprises a third water absorption unit disposed on a side of the gate driving circuit away from the substrate, and an orthogonal projection of the third water absorption unit on the substrate overlaps with an orthogonal projection of the gate driving circuit on the substrate.
6. The display substrate according to any one of claims 1 to 5, wherein the display substrate further comprises a pixel defining layer disposed in the display region to define a pixel opening region; the water absorption unit and the pixel definition layer are arranged on the same layer.
7. A display substrate according to any one of claims 2 to 5, wherein the water-blocking structure layer comprises an encapsulation layer, and an orthographic projection of the display area and the first water-absorbing unit on the substrate is located within an orthographic projection of the encapsulation layer on the substrate.
8. The display substrate of claim 4, wherein the water blocking structure layer comprises a frame sealing adhesive layer, and an orthogonal projection of the second water absorption unit on the substrate is located in an orthogonal projection of the frame sealing adhesive layer on the substrate.
9. A display device comprising the display substrate according to any one of claims 1 to 8.
10. A method for manufacturing a display substrate, the display substrate including a base including a display area and a peripheral area surrounding the display area, the method comprising:
forming a water absorption structure layer in the peripheral area of the substrate, wherein the water absorption structure layer comprises a plurality of water absorption units which are arranged at intervals along the direction from far away from the display area to close to the display area;
and forming a water blocking structure layer covering the water absorbing structure layer on one side of the water absorbing structure layer, which is far away from the substrate.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7109653B2 (en) * | 2002-01-15 | 2006-09-19 | Seiko Epson Corporation | Sealing structure with barrier membrane for electronic element, display device, electronic apparatus, and fabrication method for electronic element |
| KR20080000806A (en) * | 2006-06-28 | 2008-01-03 | 엘지.필립스 엘시디 주식회사 | Organcic electro-luminescence dispaly and fabricating method tererof |
| CN104900681A (en) * | 2015-06-09 | 2015-09-09 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and forming method thereof |
| KR20160141535A (en) * | 2015-06-01 | 2016-12-09 | 엘지디스플레이 주식회사 | Organic light emitting display device and method for manufacturing the same |
| CN206758472U (en) * | 2016-12-27 | 2017-12-15 | 霸州市云谷电子科技有限公司 | A kind of organic electroluminescence device |
| CN108198837A (en) * | 2017-12-26 | 2018-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN109786573A (en) * | 2018-12-29 | 2019-05-21 | 厦门天马微电子有限公司 | Display panel and its manufacturing method and display device |
| US10673021B2 (en) * | 2015-12-31 | 2020-06-02 | Shenzhen Royole Technologies Co., Ltd. | Package structure, flexible display screen, and method for manufacturing package structure |
| CN112563432A (en) * | 2020-12-04 | 2021-03-26 | 深圳市华星光电半导体显示技术有限公司 | Organic light emitting display panel and method of manufacturing the same |
| US20210242422A1 (en) * | 2019-05-07 | 2021-08-05 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel, display module, and electronic device |
| US20210359270A1 (en) * | 2018-12-13 | 2021-11-18 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and display device |
-
2021
- 2021-11-25 CN CN202111413167.7A patent/CN114122099A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7109653B2 (en) * | 2002-01-15 | 2006-09-19 | Seiko Epson Corporation | Sealing structure with barrier membrane for electronic element, display device, electronic apparatus, and fabrication method for electronic element |
| CN100389509C (en) * | 2002-01-15 | 2008-05-21 | 精工爱普生株式会社 | Sealing structure with barrier membrane for electronic element, display device, electronic apparatus, and fabrication method for electronic element |
| KR20080000806A (en) * | 2006-06-28 | 2008-01-03 | 엘지.필립스 엘시디 주식회사 | Organcic electro-luminescence dispaly and fabricating method tererof |
| KR20160141535A (en) * | 2015-06-01 | 2016-12-09 | 엘지디스플레이 주식회사 | Organic light emitting display device and method for manufacturing the same |
| CN104900681A (en) * | 2015-06-09 | 2015-09-09 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and forming method thereof |
| US10673021B2 (en) * | 2015-12-31 | 2020-06-02 | Shenzhen Royole Technologies Co., Ltd. | Package structure, flexible display screen, and method for manufacturing package structure |
| CN206758472U (en) * | 2016-12-27 | 2017-12-15 | 霸州市云谷电子科技有限公司 | A kind of organic electroluminescence device |
| CN108198837A (en) * | 2017-12-26 | 2018-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| US20210359270A1 (en) * | 2018-12-13 | 2021-11-18 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and display device |
| CN109786573A (en) * | 2018-12-29 | 2019-05-21 | 厦门天马微电子有限公司 | Display panel and its manufacturing method and display device |
| US20210242422A1 (en) * | 2019-05-07 | 2021-08-05 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel, display module, and electronic device |
| CN112563432A (en) * | 2020-12-04 | 2021-03-26 | 深圳市华星光电半导体显示技术有限公司 | Organic light emitting display panel and method of manufacturing the same |
Non-Patent Citations (1)
| Title |
|---|
| 贺效宜，郑焕盛: "高吸水性树脂的发展和应用", 化工新型材料, vol. 1985, no. 10, 28 October 1985 (1985-10-28), pages 12 - 16 * |
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