CN110148679A - Display panel and electronic equipment - Google Patents
Display panel and electronic equipment Download PDFInfo
- Publication number
- CN110148679A CN110148679A CN201910357380.7A CN201910357380A CN110148679A CN 110148679 A CN110148679 A CN 110148679A CN 201910357380 A CN201910357380 A CN 201910357380A CN 110148679 A CN110148679 A CN 110148679A
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- Prior art keywords
- display panel
- structures
- substrate
- barrier wall
- light
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Links
- 230000004888 barrier function Effects 0.000 claims abstract description 58
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 30
- 238000004806 packaging method and process Methods 0.000 claims description 16
- 238000005538 encapsulation Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000010409 thin film Substances 0.000 abstract description 9
- 238000012856 packing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 14
- 239000012044 organic layer Substances 0.000 description 8
- 239000010408 film Substances 0.000 description 6
- 239000011368 organic material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of display panel and electronic equipment.The display panel includes substrate；Light emitting structure, the light emitting structure are located on the substrate；Encapsulating structure, the encapsulating structure cover the light emitting structure, and the encapsulating structure includes organic encapsulating material layer；And barrier structure, the barrier structure include at least one first barrier wall and at least one second barrier wall；Wherein, first barrier wall is located on the substrate, around the boundary of the encapsulating structure；Multiple bulge-structures that second barrier wall includes, the multiple bulge-structure are located between the boundary of first barrier wall and the boundary of the light emitting structure.The present invention, which provides a kind of display panel and electronic equipment, can reduce thin-film packing structure in the spilling risk of opening.
Description
Technical Field
The present invention relates to the field of electronic display, and in particular, to a display panel and an electronic device.
Background
The existing OLED display screen adopts a thin film packaging structure as a packaging structure. The film packaging structure is a laminated structure formed by a plurality of layers of organic/inorganic films alternately, has good sealing performance and flexibility, and is suitable for flexible display screens. The organic layer in the film packaging structure has strong liquidity before solidification, and easily overflows the boundary of the packaging structure to form a channel for water and oxygen to invade, thereby influencing the packaging effect. Therefore, one or more turns of barrier walls are generally formed at the boundary of the thin film encapsulation structure to prevent the organic layer from overflowing.
With the development of display screens, in order to realize a truly comprehensive display screen, a camera under screen technology (CUP) is proposed. As shown in fig. 1, in the CUP structure, the display panel AA has a light-transmitting area a1 exposing the camera. In order not to affect the light transmittance of the light-transmitting region a1, a corresponding opening is formed on the thin film encapsulation structure to expose the light-transmitting region a 1.
However, the risk of overflow of the thin film encapsulation structure at the opening is much greater than at the boundary of the panel. Referring to fig. 2, fig. 2 is a schematic view of the barrier walls D1 and the organic layer D2 at the boundary of the panel, and the pressure that the barrier walls D1 need to withstand when preventing overflow is generated by the flow of the organic material D2, and it can be seen that the pressure comes from only one direction. Referring to fig. 3, fig. 3 is a schematic view of the barrier wall D3 and the organic layer D2 at the opening of the panel, the pressure that the barrier wall D3 needs to withstand when preventing flooding is generated by the flow of the organic material D2, and it can be seen that the pressure is only from multiple directions. Therefore, there is a greater risk of spillage of the encapsulation film near the open area of the CUP panel.
Therefore, there is a need to provide a new barrier wall structure that reduces the risk of organic material overflow at the openings.
Disclosure of Invention
The invention provides a display panel and an electronic device, which can reduce the overflow risk of a film packaging structure at an opening.
To solve the above problems, the present invention provides a display panel, comprising:
a substrate;
a light emitting structure on the substrate;
an encapsulation structure covering the light emitting structure, the encapsulation structure comprising a layer of organic encapsulation material; and
a barrier structure comprising at least one first barrier wall and at least one second barrier wall; wherein,
the first barrier wall is positioned on the substrate and surrounds the boundary of the packaging structure;
the second barrier wall includes a plurality of protruding structures, and the plurality of protruding structures are located between a boundary of the first barrier wall and a boundary of the light emitting structure.
According to one aspect of the present invention, the substrate has a first light-transmitting region thereon, the light-emitting structure has a second light-transmitting region thereon, the first light-transmitting region and the second light-transmitting region have the same shape and area; wherein,
the packaging structure is provided with an opening exposing the first light transmission area and the second light transmission area, and the blocking structure is arranged outside the boundary of the opening.
According to one aspect of the invention, the plurality of raised structures have the same shape and size.
According to one aspect of the present invention, the plurality of protruding structures are columnar structures, and a cross section of the columnar structures along a direction parallel to the substrate is one of a circle, an ellipse, a sector, a triangle, a rectangle, and a polygon.
According to one aspect of the present invention, the plurality of protruding structures are columnar structures, and a cross section of each columnar structure along a direction perpendicular to the substrate is one of a rectangle, a triangle, and a trapezoid.
According to one aspect of the present invention, the plurality of protruding structures includes a base and at least one extension, the base is stacked on the base, and a projection of the base on the base covers a projection of the extension on the base.
According to one aspect of the present invention, the plurality of protruding structures are uniformly distributed between the first barrier wall and the boundary of the encapsulation structure; wherein the shortest distances between the boundaries of any two adjacent multiple convex structures are equal.
According to one aspect of the present invention, a distance between geometric centers of projections of any two adjacent plural convex structures on the substrate is greater than twice a shortest distance between boundaries of the any two adjacent plural convex structures and less than ten times the shortest distance between the boundaries of the any two adjacent plural convex structures.
According to one aspect of the present invention, the height of the plurality of protruding structures is greater than or equal to the height of the first barrier wall.
Correspondingly, the invention also provides an electronic device which comprises the display panel.
The blocking structure comprises a first blocking wall and a second blocking wall, wherein the second blocking wall is a plurality of protruding structures arranged between the boundaries of the packaging structure and the first blocking wall. The protruding structure can reduce the flow velocity of the overflowing organic layer, thereby reducing the risk of the organic layer overflowing the blocking structure. Compared with the prior art, the organic barrier layer in the packaging structure can obviously reduce the overflow risk of the organic barrier layer in the opening area of the display panel, and the performance of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel with an off-screen camera in the prior art;
FIG. 2 is a schematic diagram of a structure of a barrier wall at a boundary of the display panel in FIG. 1;
FIG. 3 is a schematic diagram of a structure of a barrier wall at an opening of the display panel shown in FIG. 1;
FIG. 4 is a cross-sectional view of an opening in a display panel in an embodiment of the invention;
FIG. 5 is a top view of a blocking structure at an aperture of the display panel of FIG. 4;
FIG. 6 is a schematic perspective view of a portion of the raised structure of FIG. 5;
FIG. 7 is a top view of a blocking structure at an aperture of a display panel in another embodiment of the invention;
FIG. 8 is a top view of a blocking structure at an opening of a display panel in a third embodiment of the invention;
FIG. 9 is a top view of a blocking structure at an aperture of a display panel in a fourth embodiment of the invention;
FIG. 10 is a cross-sectional view of an opening of a display panel according to a fifth embodiment of the present invention;
fig. 11 is a sectional view of the protrusion structure constituting the second barrier wall of fig. 10.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention provides a display panel and an electronic device, which can reduce the overflow risk of a film packaging structure at an opening. The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 4 to 6, fig. 4 is a cross-sectional view of an opening of a display panel according to an embodiment of the invention, fig. 5 is a top view of a blocking structure at the opening of the display panel in fig. 4, and fig. 6 is a schematic perspective view of a portion of a convex structure in fig. 5.
In this embodiment, the present invention provides a display panel, including: a substrate 100, a light emitting structure, an encapsulation structure 500, and a barrier structure.
The substrate 100 may be a rigid substrate and a flexible substrate. In this embodiment, the substrate 100 is a flexible substrate, and the material thereof may be polyimide. Preferably, the substrate 100 has a first light-transmitting region thereon, the light-emitting structure has a second light-transmitting region thereon, and the first light-transmitting region and the second light-transmitting region have the same shape and area. The package structure 500 has an opening exposing the first and second light-transmitting regions, and the blocking structure is disposed outside a boundary of the opening.
The light emitting structure is located on the substrate 100 and includes a planarization layer 210, an anode 310 located above the planarization layer 210, a pixel defining layer 220 covering the planarization layer 210 and exposing the anode 310, a light emitting material 410 located in an opening of the pixel defining layer, and a cathode covering the light emitting material.
The package structure 500 covers the light emitting structure, and the package structure 500 is a thin film package structure. The thin film encapsulation structure includes at least a first inorganic thin film 510, an organic encapsulation material layer 520, and a second inorganic thin film 530.
The blocking structure includes at least one first blocking wall 400 and at least one second blocking wall 200. The first barrier rib 400 is located on the substrate 100, surrounding the boundary of the light emitting structure.
The second barrier wall 200 includes a plurality of protruding structures between the boundary of the first barrier wall 400 and the boundary of the light emitting structure. Referring to fig. 4, a first protrusion structure 211, a second protrusion structure 212 and a third protrusion structure 213 are exemplarily shown in the fourth embodiment.
Preferably, the plurality of protruding structures are uniformly distributed between the first barrier wall 400 and the boundary of the light emitting structure; wherein the shortest distances between the boundaries of any two adjacent multiple convex structures are equal.
In order to simplify the process and reduce the manufacturing difficulty, in this embodiment, the plurality of protruding structures forming the second barrier wall 200 have the same shape and size. For example, the plurality of protrusion structures may be pillar-shaped structures having a cross section in a direction parallel to the substrate 100 of one of a circle, an ellipse, a sector, a triangle, a rectangle, and a polygon. In one embodiment of the present application, as shown in fig. 5 and 6, the cross-section of the pillar-shaped structure in a direction parallel to the substrate 100 is circular. In another embodiment of the present application, as shown in fig. 7, a cross-section of the pillar-shaped structure along a direction parallel to the substrate 100 is a sector shape. The cross section of the columnar structure along a direction perpendicular to the substrate 100 is one of a rectangle, a triangle, and a trapezoid.
In other embodiments of the present application, the plurality of protruding structures constituting the second barrier wall 200 may have different shapes and sizes, that is, the plurality of first protruding structures 211 closest to the first barrier wall 400, the plurality of second protruding structures 212 farther from the first barrier wall 400, and the plurality of third protruding structures 213 farthest from the first barrier wall 400 may have different shapes. The second barrier wall 200 composed of the protrusion structures of different shapes has better barrier ability to organic materials than the protrusion structures composed of a single shape.
For example, in the third embodiment of the present application, referring to fig. 8, the plurality of first protrusion structures 211 closest to the first barrier wall 400 and the plurality of third protrusion structures 213 farthest from the first barrier wall 400 are shaped as first pillar structures. The first pillar-shaped structure has a circular cross section along a direction parallel to the substrate 100, and the pillar-shaped structure has a trapezoidal cross section along a direction perpendicular to the substrate 100. The plurality of second protrusion structures 212 farther from the first blocking wall 400 may be second pillar-shaped structures. The cross section of the second columnar structure along a direction parallel to the substrate 100 is a sector, and the cross section of the columnar structure along a direction perpendicular to the substrate 100 is a rectangle.
Also, in the fourth embodiment of the present application, referring to fig. 9, the plurality of first protrusion structures 211 closest to the first barrier wall 400 and the plurality of third protrusion structures 213 farthest from the first barrier wall 400 are shaped as second column-shaped structures. The plurality of second protrusion structures 212 farther from the first barrier wall 400 may be first pillar structures. In practice, the shape of the plurality of protruding structures may be set as desired. It should be noted that the shape of the protrusion structure is only used for illustrating the present invention, and is not to be construed as limiting the present invention.
Referring to fig. 10 and 11, in a fifth embodiment of the present invention, the plurality of protruding structures include a base 201 and at least one extension 202 located above the base 201, which are stacked, and a projection of the base 201 on the substrate 100 covers a projection of the extension 202 on the substrate 100. The protruding structure arranged in a laminated mode has better stability, can be formed by deposition twice and is easy to achieve. Also, the first barrier wall 400 may be provided as a stacked structure having a base and at least one extension. The first blocking wall 400 includes a first base 210 stacked and at least one first extension part 220 positioned above the first base 210 with reference to fig. 10. The stacked structure of the first base 210 and the first extension portion 220 may be formed by multiple etching, and the detailed process is not repeated.
In the present invention, a distance between geometric centers of projections of any two adjacent plurality of protruding structures constituting the second barrier wall 200 on the substrate 100 is greater than twice a shortest distance between boundaries of the any two adjacent plurality of protruding structures, and is less than ten times the shortest distance between the boundaries of the any two adjacent plurality of protruding structures. Too large or too small gaps among the protruding structures can cause that the flowing speed of the organic barrier materials cannot be effectively reduced by the protruding structures, and the blocking effect of the second barrier wall 200 on the organic barrier layer is influenced.
Referring to fig. 5, in one embodiment of the present invention, the plurality of protrusion structures are pillar-shaped protrusion structures, and the pillar-shaped protrusion structures are sequentially arranged in a ring shape around the periphery of the first set of retaining walls 400. The cross-section of the columnar structure along the direction parallel to the substrate 100 is circular, and the range of the diameter of the bottom of the columnar structure is 10-40 um. The height of the columnar structure is 1-2um, and the cross section of the columnar structure along the direction perpendicular to the substrate 100 is trapezoidal. The top diameter of the columnar structure ranges from 5 um to 20 um. The minimum distance between any two adjacent columnar protruding structures ranges from 10 to 100 um.
Accordingly, in the present invention, in order to ensure the blocking effect of the second blocking wall 200 on the organic blocking layer, the height of the plurality of protruding structures is greater than or equal to the height of the first blocking wall 400.
The invention also provides an electronic device comprising the display panel.
The blocking structure comprises a first blocking wall and a second blocking wall, wherein the second blocking wall is a plurality of protruding structures arranged between the boundaries of the packaging structure and the first blocking wall. The protruding structure can reduce the flow velocity of the overflowing organic layer, thereby reducing the risk of the organic layer overflowing the blocking structure. Compared with the prior art, the organic barrier layer in the packaging structure can obviously reduce the overflow risk of the organic barrier layer in the opening area of the display panel, and the performance of the display panel is improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A display panel, comprising:
a substrate;
a light emitting structure on the substrate;
an encapsulation structure covering the light emitting structure, the encapsulation structure comprising a layer of organic encapsulation material; and
a barrier structure comprising at least one first barrier wall and at least one second barrier wall; wherein,
the first barrier wall is positioned on the substrate and surrounds the boundary of the packaging structure;
the second barrier wall includes a plurality of protruding structures, and the plurality of protruding structures are located between a boundary of the first barrier wall and a boundary of the light emitting structure.
2. The display panel according to claim 1, wherein the substrate has a first light-transmitting region thereon, the light-emitting structure has a second light-transmitting region thereon above the first light-transmitting region, and the first light-transmitting region and the second light-transmitting region have the same shape and area; wherein,
the packaging structure is provided with an opening exposing the first light transmission area and the second light transmission area, and the blocking structure is arranged outside the boundary of the opening.
3. The display panel of claim 1, wherein the plurality of raised structures have the same shape and size.
4. The display panel according to claim 1, wherein the plurality of protruding structures are columnar structures, and a cross section of the columnar structures along a direction parallel to the substrate is one of a circle, an ellipse, a sector, a triangle, a rectangle, and a polygon.
5. The display panel according to claim 1, wherein the plurality of protruding structures are columnar structures, and a cross section of the columnar structures in a direction perpendicular to the substrate is one of rectangular, triangular, and trapezoidal.
6. The display panel of claim 1, wherein the plurality of protruding structures comprise a base and at least one extension located above the base, the projection of the base on the substrate covers the projection of the extension on the substrate.
7. The display panel according to claim 1, wherein the plurality of protruding structures are uniformly distributed between the first barrier wall and the boundary of the encapsulation structure; wherein the shortest distances between the boundaries of any two adjacent multiple convex structures are equal.
8. The display panel according to claim 7, wherein a distance between geometric centers of projections of any two adjacent plurality of convex structures on the substrate is greater than twice a shortest distance between boundaries of the any two adjacent plurality of convex structures and less than ten times the shortest distance between the boundaries of the any two adjacent plurality of convex structures.
9. The display panel according to claim 1, wherein the height of the plurality of protruding structures is greater than or equal to the height of the first barrier wall.
10. An electronic device, characterized in that the electronic device comprises a display panel as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357380.7A CN110148679A (en) | 2019-04-29 | 2019-04-29 | Display panel and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357380.7A CN110148679A (en) | 2019-04-29 | 2019-04-29 | Display panel and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110148679A true CN110148679A (en) | 2019-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910357380.7A Pending CN110148679A (en) | 2019-04-29 | 2019-04-29 | Display panel and electronic equipment |
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| CN (1) | CN110148679A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718640A (en) * | 2019-10-22 | 2020-01-21 | 京东方科技集团股份有限公司 | Display panel, preparation method and display device |
| WO2022001466A1 (en) * | 2020-06-29 | 2022-01-06 | 京东方科技集团股份有限公司 | Display device, display panel, and manufacturing method therefor |
| CN114613922A (en) * | 2022-03-11 | 2022-06-10 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN115275052A (en) * | 2022-07-26 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US11762232B2 (en) | 2019-12-16 | 2023-09-19 | AU Optronics (Kunshan) Co., Ltd. | Display device |
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Application publication date: 20190820 |