CN110581229A - display panel, display device and preparation method of display panel - Google Patents
display panel, display device and preparation method of display panel Download PDFInfo
- Publication number
- CN110581229A CN110581229A CN201910858788.2A CN201910858788A CN110581229A CN 110581229 A CN110581229 A CN 110581229A CN 201910858788 A CN201910858788 A CN 201910858788A CN 110581229 A CN110581229 A CN 110581229A
- Authority
- CN
- China
- Prior art keywords
- electrode
- layer
- array substrate
- display panel
- thinning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
-
- 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
-
- 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
- H10K59/1201—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel includes: the array substrate, the pixel definition layer, the light emitting layer and the first electrode; the pixel definition layer is positioned on the array substrate and comprises an opening area and a pixel definition area surrounding the opening area, and the light emitting layer is positioned in the opening area; the first electrode is positioned on one side of the light-emitting layer far away from the array substrate and comprises a first thinning area corresponding to the opening area. According to the display panel provided by the embodiment of the invention, the adhesiveness between the first electrode and the light emitting layer can be increased, the film peeling phenomenon caused by bending is avoided, and the bending performance of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display device and a preparation method of the display panel.
Background
an Organic Light Emitting Diode (OLED) display panel has the advantages of self-luminescence, low power consumption, fast response speed, wide viewing angle, and the like, and is widely applied to the field of flexible display.
However, bending stress exists between the films of the flexible display panel, so that the films are easily peeled off when the flexible display panel is bent, and display failure is caused.
Therefore, it is desirable to provide a display panel with improved film peeling.
disclosure of Invention
The invention provides a display panel, a display device and a preparation method of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including: the array substrate, the pixel definition layer, the light emitting layer and the first electrode; the pixel definition layer is positioned on the array substrate and comprises an opening area and a pixel definition area surrounding the opening area, and the light emitting layer is positioned in the opening area; the first electrode is positioned on one side of the light-emitting layer far away from the array substrate and comprises a first thinning area corresponding to the opening area.
Optionally, an orthographic projection of the first thinning area on the array substrate covers an orthographic projection of the opening area on the array substrate.
Optionally, a first organic block is disposed on the first thinning-out region;
Optionally, a surface of the first organic block on a side away from the light emitting layer is flush with a surface of the first electrode around the first thinning area.
Optionally, the display device further includes an encapsulation layer, the encapsulation layer is located on the first electrode, the encapsulation layer includes a first inorganic layer, the first inorganic layer is located on the side of the encapsulation layer close to the first electrode, and the first inorganic layer includes a second thinning region corresponding to the pixel defining region;
Optionally, the second thinning region is located on a side of the first inorganic layer away from the first electrode, and a second organic block is located between the first electrode and the second thinning region.
Optionally, the first organic block has a first surface far away from the array substrate and a second surface close to the array substrate, and the first surface projection covers the second surface projection or the second surface projection covers the first surface projection along a direction perpendicular to the array substrate;
Optionally, the second organic block has a third surface far away from the array substrate and a fourth surface close to the array substrate, and the third surface projection covers the fourth surface projection or the fourth surface projection covers the third surface projection along the direction perpendicular to the array substrate;
Optionally, the first thinning-out area is trapezoidal in cross section along a direction perpendicular to the array substrate;
Optionally, the second thinning-out area is trapezoidal in cross section along a direction perpendicular to the array substrate.
Optionally, the first thinned region has a thickness of 1/2-2/3 of the first electrode thickness;
optionally, the second zone of reduction is 1/2-3/4 of the thickness of the first inorganic layer.
Optionally, the width of the second organic block is 1/3-1/2 of the width of the corresponding pixel defining area along the direction parallel to the array substrate.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to any one of the first aspect.
In a third aspect, an embodiment of the present invention further provides a method for manufacturing a display panel, including:
providing an array substrate; forming a pixel defining layer on the array substrate; patterning the pixel defining layer to form an opening region; depositing a light emitting layer in the opening region; forming a first electrode on the light emitting layer; the first electrode is patterned such that the first electrode includes a first thinning-out region corresponding to the opening region.
Optionally, forming a first organic block corresponding to the first thinning-out region; the pixel defining layer includes a pixel defining area surrounding the opening area, and a second organic block is formed corresponding to the pixel defining area; and forming an encapsulation layer.
According to the display panel provided by the embodiment of the invention, the display panel comprises an array substrate, a pixel defining layer, a light emitting layer and a first electrode; the pixel definition layer is positioned on the array substrate and comprises an opening area, and the light emitting layer is positioned in the opening area; the first electrode is positioned on one side of the light-emitting layer far away from the array substrate and comprises a first thinning area corresponding to the opening area. The first electrode comprises a first thinning area corresponding to the opening area, namely the thickness of the first electrode corresponding to the light-emitting layer area is thinner than that of the first electrode in the non-light-emitting layer area, so that the adhesion between the first electrode and the light-emitting layer is increased, the risk of peeling the first electrode from the light-emitting layer in the bending process is reduced, the failure of a light-emitting device is avoided, and the bending performance of the display panel is improved. The display panel, the display device and the display panel manufacturing method provided by the embodiment of the invention can reduce the film peeling risk and improve the bending performance of the display panel.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of another display panel provided in an embodiment of the invention;
fig. 4 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention.
Description of reference numerals:
100-a display panel;
10-an array substrate;
20-pixel definition layer, 21-pixel definition region;
30-a light-emitting layer;
40-a first electrode; 41-a first thinning zone;
51-a first organic block; 52-a second organic block;
60-an encapsulation layer; 61-a first inorganic layer; 62-a first organic layer; 63-a second inorganic layer; 611-second thinning-out zone.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent 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.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
it will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
as mentioned above, the peeling problem between the film layers, especially between the cathode and the light emitting layer, is easily generated during the bending process of the display panel, and further the display effect of the display panel is reduced, even the display is failed, and the service life is reduced. The application aims at the problem of film peeling, and provides a display panel for relieving or eliminating the problem of film peeling in the bending process.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the invention. As shown in the figure, the display panel 100 of the present embodiment includes an array substrate 10, a pixel defining layer 20, a light emitting layer 30 and a first electrode 40, the pixel defining layer 20 is located on the array substrate 10, the pixel defining layer 20 includes an opening area and a pixel defining area 21 surrounding the opening area, the light emitting layer 30 is located in the opening area, the first electrode 40 is located on a side of the light emitting layer 30 away from the array substrate 10, and the first electrode 40 includes a first thinning area 41 corresponding to the opening area. The first electrode 40 includes a first thinning region 41 corresponding to the opening region, that is, the first electrode 40 corresponding to the light-emitting layer 30 region has a thickness thinning region, the thickness thinning of the first electrode 40 can increase the adhesion between the first electrode 40 and the light-emitting layer 30, the risk of film peeling is reduced in the bending process of the display panel, the display failure is avoided, the bending resistance of the display panel is improved, and the service life of the display panel is prolonged.
In general, an OLED light emitting device includes a first electrode, a light emitting layer, and a second electrode (not shown in the drawings) that are stacked, the light emitting layer is an organic light emitting layer, and electrons and holes injected through the first and second electrodes are combined with each other at the light emitting layer, thereby emitting light. In the embodiment of the present application, the first electrode is disposed on a side of the light emitting layer facing away from the array substrate, and exemplarily, the first electrode is a cathode, and the corresponding second electrode is an anode. The light emitting layer may be an organic light emitting layer, and may further include at least one of common layers including a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer, and an electron injection layer to improve light emitting efficiency.
The array substrate includes a substrate and a thin film transistor (not shown) on the substrate, and the substrate may be a flexible substrate such as polyimide, so as to achieve flexibility of the display panel. The thin film transistor is used for driving the corresponding light emitting device to emit light. Illustratively, the thin film transistor includes an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source electrode and a drain electrode, the source electrode and the drain electrode being electrically connected to the active layer through via holes located on the gate insulating layer and the interlayer insulating layer. The above description is given by way of example of a top gate structure array substrate, however, it will be understood by those skilled in the art that the solution of the present invention can also be applied to a bottom gate structure array substrate. Those skilled in the art can design the top gate structure or the bottom gate structure according to actual needs, and the position of the active layer is provided, which is not described herein again.
the first electrode 40 includes a first thinning-out region 41 corresponding to the opening region, that is, the first electrode region corresponding to the opening region exists with a thickness thinner than that of the first electrode corresponding to the pixel defining region 21. The orthographic projection of the first thinning-out region 41 on the array substrate 10 may cover the orthographic projection of the opening region on the array substrate 10, or may be located in the orthographic projection of the opening region on the array substrate 10, so long as the first thinning-out region 41 exists in the first electrode 40 corresponding to the opening region, the adhesion between the first electrode 40 and the light-emitting layer 30 may be enhanced. It is understood that the thickness of the first electrode refers to a thickness along the first electrode 40 toward the light emitting layer 30.
With continued reference to fig. 1, in some embodiments, an orthographic projection of the first thinned region 41 on the array substrate 10 covers an orthographic projection of the opening region on the array substrate 10, and at this time, the orthographic projection of the first thinned region 41 on the array substrate 10 covers an orthographic projection of the light-emitting layer 30 on the array substrate 10. That is, the thickness of the first electrode 40 corresponding to the light-emitting layer 30 is smaller than that of the first electrode 40 corresponding to the non-light-emitting layer region, and compared with the case that the orthographic projection of the first thinning-out region 41 on the pixel defining layer 10 is located in the orthographic projection of the opening region on the pixel defining layer 10, the range of the thinning-out region of the first electrode 40 in the embodiment is further increased, the adhesion between the whole light-emitting layer 30 and the first electrode 40 is improved, and the bending resistance of the display panel is further enhanced.
Preferably, the first thinning-out region 41 has a first cross section along a direction parallel to the array substrate 10, and an orthogonal projection of the first cross section on the array substrate 10 covers an orthogonal projection of the opening region on the array substrate 10. In this embodiment, the adhesion between the first electrode 40 and the light emitting layer 30 is further enhanced, the bending resistance of the display panel can be improved, and the shape of the first thinning-out region 41 can be determined according to the shape of the opening region, thereby simplifying the process.
When the first electrode 40 has the first thinning-out region 41, the subsequent film layer may be directly formed on the first electrode, or the first organic block 51 may be disposed on the first thinning-out region 41 and then the subsequent film layer may be formed. Preferably, the surface of the first organic block 51 on the side away from the light-emitting layer 30 is flush with the surface of the first electrode 40 around the first thinning-out region, that is, when the first organic block 41 is disposed, the first organic block 41 is filled in the groove where the first electrode 40 exists due to the presence of the first thinning-out region 41, and preferably, the first organic block 41 is filled in the groove where the first electrode 40 exists due to the presence of the first thinning-out region 41. The first organic block 51 is arranged on the first thinning area 41, so that the flexibility of the display panel can be increased, the bending capacity of the display panel is improved, and meanwhile, when the surface of one side of the first organic block 51, which is far away from the light-emitting layer 30, and the surface of the first electrode 40 around the first thinning area are kept flat, the first organic block 51 plays a role in flattening, so that the preparation of a subsequent film layer is facilitated.
the first organic block 51 has a first surface far from the side of the array substrate 10 and a second surface close to the side of the array substrate 10, and the first surface projection covers the second surface projection or the second surface projection covers the first surface projection along the direction perpendicular to the array substrate 10. That is to say, the first surface of first organic piece 51 is greater than the second surface, or the second surface is greater than the first surface, and under this condition, can increase the area of contact between first organic piece 51 and the adjacent rete, avoid the rete to drop, and under the condition of buckling moreover, the side of first organic piece 51 has better tension and elasticity, can play better cushioning effect.
In one embodiment, the first surface projection covers the second surface projection along a direction perpendicular to the array substrate 10. As shown in fig. 2, the cross section of the first organic block 51 along the direction perpendicular to the array substrate 10 is an inverted trapezoid, that is, the first organic block is a quadrangular frustum, and compared with the case that the first organic block is a quadrangular prism structure, the first organic block 51 has a larger contact area with the adjacent surrounding film layers, so as to enhance the mutual attachment effect between the film layers, and during the bending process, the first organic block 51 has a better engagement force with the adjacent film layers, so as to avoid falling off, and the first organic block 51 plays a better role in buffering and supporting under the bending condition, in addition, the thinning range of the first electrode 40 is further expanded, so as to enhance the adhesion between the first electrode 40 and the light-emitting layer 20.
In other embodiments, the first organic block 51 may take any shape including a circular truncated cone, a trapezoid, etc., and those skilled in the art may select the shape according to actual situations.
In some embodiments, the first surface and the second surface may be the same size, for example, the first organic block 51 is a prism, a cylinder, etc., which also serves to enhance the adhesion between the cathode and the light emitting layer.
In some embodiments, the display panel 100 further includes an encapsulation layer 60, and the encapsulation layer 60 is disposed on the first electrode 40 for encapsulating the light emitting device. Aiming at the OLED light-emitting device, the light-emitting material is easy to lose efficacy after being invaded by water vapor, and the packaging layer can prevent water and oxygen from invading and damaging the light-emitting device. The encapsulation layer 60 includes a first inorganic layer 61, the first inorganic layer 61 is located on a side of the encapsulation layer 60 close to the first electrode 40, and the first inorganic layer 61 is provided with a second thinning-out region 611 corresponding to the pixel defining region 21. The second thinning-out region 611 enables the pixel defining region 21 corresponding to the first electrode 40 to be a weak region of intensity, so that the light-emitting layer 30 region tends not to be deformed or less deformed under the same bending condition, thereby reducing or eliminating the peeling-off phenomenon between the first electrode 40 and the light-emitting layer 30.
generally, the encapsulation layer is a thin film encapsulation layer in which organic layers and inorganic layers are alternately stacked, the inorganic layer is located on the outer side of the encapsulation layer, the number of the inorganic layers is more than that of the organic layers, specifically, the encapsulation layer may be in a form of three layers of a first inorganic layer, a first organic layer, and a second inorganic layer, the encapsulation layer is located on the side of the first electrode away from the light emitting layer, the encapsulation layer may also be in a form of five layers of a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer, and a third inorganic layer, which are alternately stacked, or in a form of other layers and an arrangement manner, which is not specifically limited in this application.
when the first inorganic layer 61 is provided with the second thinning-out region 611 corresponding to the pixel defining region 21, the second thinning-out region 611 may be located on the side of the first inorganic layer 61 away from the first electrode 40, or may be located on the side of the first inorganic layer 61 close to the first electrode 40. When the second thinning-out region 611 is located on the side of the first inorganic layer 61 away from the first electrode 40 and the second organic block exists between the first electrode 40 and the second thinning-out region 611, it can be understood that when the second thinning-out region 611 is located on the side of the first inorganic layer 61 away from the first electrode 40, the second thinning-out region 611 tends to become a weak region in strength in the bent state, which can avoid an excessive deformation tendency of the light-emitting layer 30 region and avoid peeling between the first electrode 40 and the light-emitting layer 30. And the second organic block 52 can increase the flexibility of the display panel 100, since the first inorganic layer 61 has the second thinned region 611, and is easier to pass through the second thinned region 611 when water and oxygen invade, and the organic material has pores and can absorb part of invaded water vapor, the second organic block 52 can enhance the water and oxygen blocking capability of the encapsulation layer 60.
Specifically, referring to fig. 3, the display panel 100 includes an encapsulation layer 60, the encapsulation layer 60 is located on the first electrode 40, the encapsulation layer 60 includes a first inorganic layer 61, a first organic layer 62 and a second inorganic layer 63, which are stacked, the first inorganic layer 61 is located on a side of the encapsulation layer 60 close to the first electrode 40, the first inorganic layer 61 has a second thinning region 611 corresponding to the pixel defining region 21, the second thinning region 611 is located on a side of the first inorganic layer 61 away from the first electrode 40, and the second organic block 52 is located between the first electrode 40 and the second thinning region 611. Under the same bending condition, the film layer in the corresponding range of the pixel limiting area 21 is preferentially deformed, the light emitting area is protected, and the service life of the device is prolonged.
the second organic block 52 has a third surface far from the side of the array substrate 10 and a fourth surface near the side of the array substrate 10, and the third surface projection covers the fourth surface projection or the fourth surface projection covers the third surface projection along the direction perpendicular to the array substrate 10. That is to say, the third surface of the second organic block 52 is greater than the fourth surface, or the fourth surface is greater than the third surface, in this case, the contact area between the second organic block 52 and the adjacent film layer can be increased, and the second organic block is prevented from falling off, and in the case of bending, the side surface of the second organic block 52 has better tension and elasticity, and can play a better buffering role.
In one embodiment, the fourth surface projection covers the third surface projection along a direction perpendicular to the array substrate 10. As shown in fig. 2 or 3, the cross section of the second organic block 52 along the direction perpendicular to the array substrate 10 is trapezoidal, that is, the first organic block is a rectangular frustum, and there is a larger contact area between the second organic block 52 and the adjacent film layer around, so as to enhance the mutual attachment effect between the film layers, and in the bending process, there is a better engagement force between the second organic block 52 and the adjacent film layer, so as to avoid falling off, and the second organic block 52 plays a better buffering role and support under the bending condition.
In other embodiments, the second organic block 52 may take any shape including a circular truncated cone, a trapezoid, etc., which may be selected by one skilled in the art according to the actual situation.
In some embodiments, the third surface and the fourth surface may have the same shape and size, for example, the second organic block 52 is a prism, a cylinder, or the like, and also has the effect of protecting the light-emitting region and prolonging the service life of the device.
As shown in fig. 3, the display panel 100 includes a first organic block 51 and a second organic block 52, and the first organic block 51 has an inverted trapezoidal cross-sectional shape along a direction perpendicular to the array substrate, that is, a structure is formed in which a first surface projection covers a second surface projection along a direction perpendicular to the array substrate 10; the second organic block 52 has a trapezoidal cross-sectional shape, that is, a structure in which a projection of the fourth surface covers a projection of the third surface in a direction perpendicular to the array substrate 10 is formed. First organic piece 51 adopts processes such as inkjet printing to form behind the patterning negative pole, and the trapezoidal cross-section structure of falling makes the contained angle between first organic piece 51 side and the adjacent first electrode 40 be non-right angle, and then can avoid having the deposit hole between first organic piece and the adjacent rete, avoids the defective products. The second organic block 52 is of a trapezoidal cross-sectional structure formed by adopting processes such as ink-jet printing and the like, the second organic block 52 of the trapezoidal cross-sectional structure facilitates preparation of a subsequent film layer, gaps are prevented from existing in an area close to the second organic block during preparation of a subsequent first inorganic layer, and process difficulty is reduced.
in one embodiment, the thickness of the first reduced thickness region 51 is 1/2-2/3 of the thickness of the first electrode 40, and the thickness in this range is designed to avoid the risk of cracking caused by over-thinning of the first electrode 40. The adhesion between the first electrode 40 and the light emitting layer 30 is improved and the bending performance of the display panel 100 is improved without affecting the normal function of the first electrode 40. It is understood that after the first electrode is formed, the first electrode is patterned to form the first thinned region, that is, before the first thinned region is formed, the thickness of the first electrode can be regarded as a fixed value except for process errors, and the thickness of the first electrode in this embodiment is the thickness of the first electrode before the first thinned region is formed.
in an embodiment, the thickness of the second reduced thickness region 52 is 1/2-3/4 of the thickness of the first inorganic layer 61, and the thickness in this range is designed to have a preferential bending effect on the non-display region, protect the display region, avoid the peeling of the first electrode 40 and the light-emitting layer 30, and ensure the maximum water and oxygen barrier effect of the encapsulation layer 60 compared to the encapsulation layer 60 without the second reduced thickness region 52.
In some embodiments, the first organic block 51 and the second organic block 52 may have the same shape and structure, for example, both are rectangular, cubic, or truncated pyramid, and are selected according to requirements and processes, the first organic block 51 and the second organic block 52 may have the same material, for example, at least one of acrylic acid, acrylate, and organic silicon may be selected, so as to improve the bending performance of the display panel, or at least one of polyimide, polystyrene, or an organic hydrophobic material including a low surface energy material of fluoride ions or chloride ions may be selected, so as to further enhance the water and oxygen resistance of the organic device.
In some embodiments, the width of the second organic block 52 is 1/3-1/2 of the width of its corresponding pixel defining area 21 in a direction parallel to the array substrate. In the bending condition, the first organic block 51 and the second organic block 52 can be better supported, so that the preferential bending of the non-display area is realized, a better bending auxiliary effect is achieved, and the bending performance of the display panel 100 is enhanced.
The shape of the first organic block 51 may be designed according to the shape of the opening area, for example, the shape of the first organic block 51 is the same as that of the opening area, the projection of the first organic block 51 on the pixel defining layer 20 and the covering of the opening area, the process is simple, the adhesion between the first electrode 40 and the light emitting layer 30 can be increased, the bending performance of the display panel 100 is enhanced, and the shape of the second organic block 52 and the first organic block 51 may be made of the same material and similar to each other, so as to simplify the process.
the embodiment of the present invention further provides a display device, and the display device provided by the embodiment of the present invention includes any one of the display panels 100 provided by the embodiment of the present invention. Since the display device adopts the display panel 100 provided by the embodiment of the invention, the display device also has the beneficial effects of the display panel 100 of the above embodiment. It should be noted that the display device provided in the embodiment of the present invention may further include other circuits and devices for supporting normal operation of the display device, and the display device may be a mobile phone, a computer, a television, a wearable device, and the like.
an embodiment of the present invention further provides a method for manufacturing a display panel, as shown in fig. 4, including: s1: providing an array substrate; s2: depositing a pixel defining layer on the array substrate; s3: patterning the pixel defining layer to form an opening region; s4: depositing a light emitting layer in the opening region; s5: forming a first electrode on the light emitting layer; s6: the first electrode is patterned such that the first electrode includes a first thinning-out region corresponding to the opening region.
The first electrode 40 may be patterned by dry etching, laser etching, or other processes. Specifically, a first thinning region 41 is formed after coating photoresist on the first electrode, exposing, developing, and etching. The first thinning-out region 41 can increase the adhesion between the first electrode 40 and the light emitting layer 30, thereby preventing peeling between the film layers and improving the lifetime and bending capability of the display panel 100.
Further, the method for manufacturing a display panel according to the embodiment of the present invention further includes step S7 of forming a first organic block corresponding to the first thinning area; s8: the pixel defining layer includes a pixel defining area surrounding the opening area, and a second organic block is formed corresponding to the pixel defining area; s9: and forming an encapsulation layer.
After the first electrode 40 including the first thinning-out region 41 is formed, a first organic block 51 may be formed on the first electrode 40 corresponding to the first thinning-out region 41, specifically, a mask corresponding to the pattern of the first electrode 40 may be adopted, that is, an opening region of the mask is formed corresponding to the first thinning-out region 41, and then the first organic block 51 is formed corresponding to the first thinning-out region, and the first organic block 51 may be formed by processes such as inkjet printing. The first organic block 51 can increase the flexibility of the display panel 100. The second organic block 52 on the first electrode 60 corresponding to the pixel defining area 21 may be formed by an ink-jet printing process or the like.
In the embodiment, the first inorganic layer 61 is deposited after the second organic block 52 is formed, and the first inorganic layer 61 may be formed by chemical deposition, vapor deposition, or the like. Due to the existence of the second organic block 52, the area of the first inorganic layer 61 corresponding to the second organic block 42 is higher than the surrounding area, so that the first inorganic layer 61 can be planarized by dry etching, laser etching and other processes after the first inorganic layer 61 is deposited, so as to facilitate the preparation of subsequent films.
In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a display panel, comprising:
The array substrate, the pixel definition layer, the light emitting layer and the first electrode;
The pixel definition layer is positioned on the array substrate and comprises an opening area and a pixel definition area surrounding the opening area, and the light emitting layer is positioned in the opening area;
The first electrode is positioned on one side of the light-emitting layer far away from the array substrate and comprises a first thinning area corresponding to the opening area.
2. the display panel according to claim 1, wherein an orthographic projection of the first thinning-out area on the array substrate covers an orthographic projection of the opening area on the array substrate.
3. The display panel according to claim 1, wherein a first organic block is disposed on the first thinning-out region; preferably, the surface of the first organic block, which is far away from the light-emitting layer, is flush with the surface of the first electrode around the first thinning area.
4. The display panel according to any one of claims 1 to 3, further comprising an encapsulation layer on the first electrode, the encapsulation layer comprising a first inorganic layer on a side of the encapsulation layer close to the first electrode, the first inorganic layer comprising a second thinned region corresponding to the pixel defining region;
Preferably, the second thinning area is located on one side of the first inorganic layer far away from the first electrode, and a second organic block is arranged between the first electrode and the second thinning area.
5. the display panel of claim 4, wherein the first organic block has a first surface far away from the array substrate and a second surface close to the array substrate, and the first surface projection covers the second surface projection or the second surface projection covers the first surface projection along a direction perpendicular to the array substrate; and/or the second organic block is provided with a third surface far away from one side of the array substrate and a fourth surface close to one side of the array substrate, and the third surface projection covers the fourth surface projection or the fourth surface projection covers the third surface projection along the direction vertical to the array substrate;
Preferably, the first thinning-out area is trapezoidal in cross section and/or the second thinning-out area is trapezoidal in cross section along a direction perpendicular to the array substrate.
6. The display panel of claim 4 wherein the first thinned region thickness is 1/2-2/3 times the first electrode thickness; and/or the thickness of the second thinning area is 1/2-3/4 of the thickness of the first inorganic layer.
7. the display panel of claim 4, wherein the width of the second organic block is 1/3-1/2 of the width of the corresponding pixel defining area along the direction parallel to the array substrate.
8. a display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. A method for manufacturing a display panel, comprising:
Providing an array substrate;
Forming a pixel defining layer on the array substrate;
Patterning the pixel defining layer to form an opening region
Depositing a light emitting layer in the open region;
Forming a first electrode on the light emitting layer;
Patterning the first electrode such that the first electrode includes a first thinning region corresponding to the opening region.
10. the method for manufacturing a display panel according to claim 9, wherein a first organic block is formed corresponding to the first thinning-out region;
The pixel defining layer includes a pixel defining area surrounding the opening area, and a second organic block is formed corresponding to the pixel defining area;
And forming an encapsulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910858788.2A CN110581229B (en) | 2019-09-11 | 2019-09-11 | Display panel, display device and preparation method of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910858788.2A CN110581229B (en) | 2019-09-11 | 2019-09-11 | Display panel, display device and preparation method of display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110581229A true CN110581229A (en) | 2019-12-17 |
| CN110581229B CN110581229B (en) | 2021-12-14 |
Family
ID=68811287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910858788.2A Active CN110581229B (en) | 2019-09-11 | 2019-09-11 | Display panel, display device and preparation method of display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110581229B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403449A (en) * | 2020-03-26 | 2020-07-10 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN111627323A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
| CN111834551A (en) * | 2020-09-02 | 2020-10-27 | 云谷（固安）科技有限公司 | Display panel, display device and forming method of display panel |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100213819A1 (en) * | 2009-02-25 | 2010-08-26 | Cok Ronald S | Flexible oled display with chiplets |
| US20110003406A1 (en) * | 2003-07-26 | 2011-01-06 | Samsung Mobile Display Co., Ltd. | Flat panel display with high efficiency and method of fabricating the same |
| CN104576705A (en) * | 2015-01-27 | 2015-04-29 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method and display device |
| CN104752612A (en) * | 2013-12-27 | 2015-07-01 | 昆山国显光电有限公司 | OLED (Organic Light Emitting Display) and manufacturing method thereof |
| US20160190214A1 (en) * | 2002-04-23 | 2016-06-30 | Semiconductor Energy Laboratory Co., Ltd. | Light Emitting Device and Method of Manufacturing the Same |
| US9818979B2 (en) * | 2013-03-15 | 2017-11-14 | Japan Display Inc. | Organic electroluminescence display device and method of manufacturing organic electroluminescence display device |
| CN107546334A (en) * | 2016-06-28 | 2018-01-05 | 三星显示有限公司 | Display device including anti-reflection layer |
| CN108022962A (en) * | 2017-11-30 | 2018-05-11 | 深圳市华星光电技术有限公司 | Display panel and its manufacture method |
| CN108550713A (en) * | 2018-04-28 | 2018-09-18 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and its display device |
| CN208111444U (en) * | 2018-04-12 | 2018-11-16 | 昆山龙腾光电有限公司 | Thin-film transistor array base-plate and display device |
| CN109103218A (en) * | 2018-08-03 | 2018-12-28 | 昆山国显光电有限公司 | Display panel and preparation method thereof, display device |
| CN109216574A (en) * | 2017-06-30 | 2019-01-15 | 黑牛食品股份有限公司 | OLED display panel and preparation method thereof |
| CN109216426A (en) * | 2018-09-29 | 2019-01-15 | 云谷（固安）科技有限公司 | Organic luminescent device and flexible display apparatus |
| CN109686863A (en) * | 2019-01-18 | 2019-04-26 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN109946861A (en) * | 2019-04-18 | 2019-06-28 | 武汉华星光电半导体显示技术有限公司 | A kind of polaroid, display panel and preparation method thereof |
| CN110148612A (en) * | 2019-04-29 | 2019-08-20 | 武汉华星光电半导体显示技术有限公司 | Organic LED display panel and preparation method thereof |
-
2019
- 2019-09-11 CN CN201910858788.2A patent/CN110581229B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160190214A1 (en) * | 2002-04-23 | 2016-06-30 | Semiconductor Energy Laboratory Co., Ltd. | Light Emitting Device and Method of Manufacturing the Same |
| US20110003406A1 (en) * | 2003-07-26 | 2011-01-06 | Samsung Mobile Display Co., Ltd. | Flat panel display with high efficiency and method of fabricating the same |
| US20100213819A1 (en) * | 2009-02-25 | 2010-08-26 | Cok Ronald S | Flexible oled display with chiplets |
| US9818979B2 (en) * | 2013-03-15 | 2017-11-14 | Japan Display Inc. | Organic electroluminescence display device and method of manufacturing organic electroluminescence display device |
| CN104752612A (en) * | 2013-12-27 | 2015-07-01 | 昆山国显光电有限公司 | OLED (Organic Light Emitting Display) and manufacturing method thereof |
| CN104576705A (en) * | 2015-01-27 | 2015-04-29 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method and display device |
| CN107546334A (en) * | 2016-06-28 | 2018-01-05 | 三星显示有限公司 | Display device including anti-reflection layer |
| CN109216574A (en) * | 2017-06-30 | 2019-01-15 | 黑牛食品股份有限公司 | OLED display panel and preparation method thereof |
| CN108022962A (en) * | 2017-11-30 | 2018-05-11 | 深圳市华星光电技术有限公司 | Display panel and its manufacture method |
| CN208111444U (en) * | 2018-04-12 | 2018-11-16 | 昆山龙腾光电有限公司 | Thin-film transistor array base-plate and display device |
| CN108550713A (en) * | 2018-04-28 | 2018-09-18 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and its display device |
| CN109103218A (en) * | 2018-08-03 | 2018-12-28 | 昆山国显光电有限公司 | Display panel and preparation method thereof, display device |
| CN109216426A (en) * | 2018-09-29 | 2019-01-15 | 云谷（固安）科技有限公司 | Organic luminescent device and flexible display apparatus |
| CN109686863A (en) * | 2019-01-18 | 2019-04-26 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN109946861A (en) * | 2019-04-18 | 2019-06-28 | 武汉华星光电半导体显示技术有限公司 | A kind of polaroid, display panel and preparation method thereof |
| CN110148612A (en) * | 2019-04-29 | 2019-08-20 | 武汉华星光电半导体显示技术有限公司 | Organic LED display panel and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403449A (en) * | 2020-03-26 | 2020-07-10 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN111403449B (en) * | 2020-03-26 | 2024-04-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN111627323A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
| CN111627323B (en) * | 2020-06-28 | 2022-10-11 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
| CN111834551A (en) * | 2020-09-02 | 2020-10-27 | 云谷（固安）科技有限公司 | Display panel, display device and forming method of display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110581229B (en) | 2021-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107068715B (en) | Organic light-emitting display panel, organic light-emitting display device and preparation method of organic light-emitting display panel | |
| US11296175B2 (en) | Organic light-emitting display apparatus and manufacturing method thereof | |
| KR102218573B1 (en) | Display devices and methods of manufacturing display devices | |
| KR100656324B1 (en) | Display device | |
| US9136311B2 (en) | Flexible substrate, flexible display device, and method for manufacturing flexible display device | |
| CN110581229B (en) | Display panel, display device and preparation method of display panel | |
| US10840267B2 (en) | Array substrates and manufacturing methods thereof, and display panels | |
| US11394009B2 (en) | Display substrate and display device | |
| US20130126915A1 (en) | Flexible active device array substrate and organic electroluminescent device having the same | |
| CN109599499B (en) | Light emitting display panel | |
| US11380717B2 (en) | Array substrate and manufacturing method thereof, flexible display panel | |
| US11380867B2 (en) | Display panel and display device | |
| KR20120137055A (en) | Organic light emitting display device and method for manufacturing the same | |
| CN109671751B (en) | Display device, display panel and manufacturing method thereof | |
| KR20200009162A (en) | Display device | |
| KR101352121B1 (en) | Oganic electro-luminesence display panel and manufactucring method of the same | |
| CN112018131B (en) | Flexible display panel and preparation method thereof | |
| KR20160069289A (en) | Organic light emitting display apparatus and thin film deposition mask for manufacturing the same | |
| CN109410760B (en) | Flexible display panel, manufacturing method thereof and flexible display device | |
| CN212874544U (en) | Display panel | |
| JP2008108680A (en) | Manufacturing method of organic el element | |
| CN113991039A (en) | Display substrate, manufacturing method thereof, display panel and display device | |
| KR20070011009A (en) | Oled device without partition and method for fabricating the same | |
| CN113314683B (en) | Retaining wall structure, display panel and display device | |
| US20060108917A1 (en) | Organic electroluminescent device and fabricating method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |