CN112420954B - Display panel and manufacturing method thereof - Google Patents
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- CN112420954B CN112420954B CN202011294816.1A CN202011294816A CN112420954B CN 112420954 B CN112420954 B CN 112420954B CN 202011294816 A CN202011294816 A CN 202011294816A CN 112420954 B CN112420954 B CN 112420954B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 122
- 238000005538 encapsulation Methods 0.000 claims abstract description 86
- 230000004888 barrier function Effects 0.000 claims abstract description 66
- 239000000758 substrate Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims description 20
- 239000011368 organic material Substances 0.000 claims description 11
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 229910010272 inorganic material Inorganic materials 0.000 claims description 8
- 239000011147 inorganic material Substances 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 47
- 239000001301 oxygen Substances 0.000 abstract description 47
- 229910052760 oxygen Inorganic materials 0.000 abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 47
- 230000002093 peripheral effect Effects 0.000 abstract description 10
- 238000000926 separation method Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 389
- 125000006850 spacer group Chemical group 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 6
- 230000009545 invasion Effects 0.000 description 6
- -1 silicon nitride compound Chemical class 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- HKBLLJHFVVWMTK-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti].[Ti] HKBLLJHFVVWMTK-UHFFFAOYSA-N 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- UMVBXBACMIOFDO-UHFFFAOYSA-N [N].[Si] Chemical compound [N].[Si] UMVBXBACMIOFDO-UHFFFAOYSA-N 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
- H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
Abstract
The application discloses a display panel and a manufacturing method thereof. The display panel comprises a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a blocking area arranged close to the display area; the blocking area is internally provided with an array substrate, at least one blocking component positioned on the array substrate and an encapsulation layer positioned on the blocking component, the blocking component comprises a retaining wall unit and an inorganic blocking unit positioned on the periphery of the retaining wall unit, and the boundary of an organic film layer of the encapsulation layer does not exceed the inorganic blocking unit in the blocking component, which is close to the display area. This application has improved the separation water oxygen performance of display panel peripheral zone through set up inorganic barrier unit between barrier zone and demonstration, has protected display panel.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a manufacturing method thereof.
Background
In recent years, the demand of the full-screen display panel is increasing, and the water and oxygen barrier performance of the full-screen display panel is particularly important.
At present, in a full-screen display panel, a plurality of conductor layers need to be added to improve the electrical connection stability, and therefore, a plurality of organic insulating layers need to be added to insulate adjacent conductor layers, but the organic insulating layers reduce the water and oxygen barrier performance of the peripheral region of the display panel.
Therefore, a display panel and a method for fabricating the same are needed to solve the above-mentioned problems.
Disclosure of Invention
The application provides a display panel and a manufacturing method thereof, and aims to solve the technical problem that an organic layer insulating layer in the existing full-screen display panel reduces the water and oxygen blocking performance of the peripheral area of the display panel.
In order to solve the above problems, the technical solution provided by the present application is as follows:
a display panel comprises a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a blocking area arranged close to the display area;
be provided with array substrate, be located in the barrier region at least one barrier member on the array substrate and be located encapsulation layer on the barrier member, barrier member includes the barricade unit and is located barricade member outlying inorganic barrier unit, the boundary of the organic film layer of encapsulation layer is not more than be close to in the barrier member the display area inorganic barrier unit.
In the display panel of the present application, the array substrate, the light emitting device layer on the array substrate, the encapsulation layer on the light emitting device layer, and the lead layer between the array substrate and the light emitting device layer are disposed in the display region;
the lead layer comprises a first insulating layer located on the array substrate, a first connecting layer located on the first insulating layer and a second insulating layer located on the first connecting layer, the second insulating layer is made of an inorganic material, and the inorganic blocking unit comprises the second insulating layer located in the blocking area.
In the display panel, a data signal line layer is further arranged in the blocking area and located on the array substrate, and the second insulating layer covers the data signal line layer.
In the display panel of the present application, the encapsulation layer includes a first inorganic encapsulation layer close to the array substrate, an organic encapsulation layer located on the first inorganic encapsulation layer, and a second inorganic encapsulation layer located on the organic encapsulation layer, the organic encapsulation layer is in the orthographic projection on the array substrate is located outside the data signal line layer.
In the display panel of the present application, the lead layer further includes a second connection layer on the second insulating layer and an organic planarization layer on the second connection layer;
the retaining wall unit comprises the first insulating layer positioned in the blocking region, the second insulating layer positioned on the first insulating layer and the organic flat layer positioned on the second insulating layer;
in the blocking region, the second insulating layer covers the data signal line layer and the first insulating layer, the first insulating layer is made of an organic material, the second insulating layer comprises a plurality of first openings, and the organic flat layer is arranged in contact with the first insulating layer through the first openings.
In the display panel of the present application, in a direction from the display area to the non-display area, the distribution density of the dam units is first decreased and then increased;
in the direction from the first insulating layer to the organic flat layer, the cross-sectional area of the retaining wall unit on the first plane is gradually increased;
wherein the first plane is parallel to the display panel.
In the display panel of the present application, in a direction from the display area to the non-display area, the height of the dam unit is first reduced and then increased.
In the display panel of the application, the display panel further comprises a lower screen sensing area, the lower screen sensing area is located in the display area, and a sensor is arranged in the lower screen sensing area;
the light emitting device layer comprises a plurality of light emitting device units, the second insulating layer comprises a plurality of second openings, and the second openings are arranged between every two adjacent light emitting device units in the sensing area under the screen.
In the display panel of the present application, the thickness of the second insulating layer located in the display area is smaller than the thickness of the second insulating layer located in the blocking area, and the thickness of the second insulating layer located in the sensing area under the screen is smaller than the thickness of the second insulating layer located in the display area.
The application also provides a manufacturing method of the display panel, the display panel comprises a display area and a non-display area which is arranged at the periphery of the display area, the non-display area comprises a blocking area which is arranged close to the display area, and the manufacturing method of the display panel comprises the following steps:
forming a second insulating layer on the array substrate in the blocking area;
forming at least one blocking member on the second insulating layer;
forming an encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer on the barrier member;
the first inorganic packaging layer, the second inorganic packaging layer and the second insulating layer positioned on the periphery of the barrier component form an inorganic barrier unit, and the boundary of the organic packaging layer does not exceed the inorganic barrier unit close to the display area.
Has the advantages that: this application has improved the separation water oxygen performance of display panel peripheral zone through set up inorganic barrier unit between barrier zone and demonstration, has protected display panel.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a first structure of a display panel according to the present application;
FIG. 2 is a schematic structural diagram of a second structure of a display panel according to the present application;
FIG. 3 is a schematic structural diagram of a third structure of a display panel according to the present application;
FIG. 4 is a schematic structural diagram of a fourth structure of a display panel according to the present application;
FIG. 5 is a schematic structural diagram of a fifth structure of a display panel according to the present application;
FIG. 6 is a schematic top view of a sixth structure of a display panel of the present application;
FIG. 7 is a schematic top view of a seventh structure of a display panel of the present application;
FIG. 8 is a schematic structural diagram of an eighth structure of a display panel according to the present application;
FIG. 9 is a schematic structural diagram of a ninth structure of a display panel according to the present application;
FIG. 10 is a schematic top view of a tenth structure of a display panel of the present application;
FIG. 11 is a schematic top view of an eleventh structure of a display panel of the present application;
fig. 12 is a flowchart illustrating steps of a method for manufacturing a display panel according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, in a full-screen display panel, a plurality of conductor layers need to be added to improve the electrical connection stability, and therefore, a plurality of organic insulating layers need to be added to insulate adjacent conductor layers, but the organic insulating layers reduce the water and oxygen barrier performance of the peripheral region of the display panel.
Referring to fig. 1 to 10, the present application discloses a display panel 100, which includes a display region and a non-display region located at the periphery of the display region, wherein the non-display region includes a blocking region disposed close to the display region;
the array substrate 200, at least one blocking member 600 positioned on the array substrate 200 and the encapsulation layer 500 positioned on the blocking member 600 are arranged in the blocking region, the blocking member 600 comprises a retaining wall unit 610 and an inorganic blocking unit 620 positioned at the periphery of the retaining wall unit, and the boundary of the organic film layer of the encapsulation layer 500 is not more than the inorganic blocking unit 620 positioned in the blocking member 600 and close to the display region.
This application has improved the separation water oxygen performance of display panel peripheral region through set up inorganic barrier unit between barrier region and demonstration, has protected display panel.
The technical solution of the present application will now be described with reference to specific embodiments.
The display panel 100 includes a display region and a non-display region located at a periphery of the display region, and the non-display region includes a blocking region disposed near the display region. The blocking region is provided with an array substrate 200, at least one blocking member 600 located on the array substrate 200, and an encapsulation layer 500 located on the blocking member 600, wherein the blocking member 600 includes a retaining wall unit 610 and an inorganic blocking unit 620 located at the periphery of the retaining wall unit, and the boundary of the organic film layer of the encapsulation layer 500 does not exceed the inorganic blocking unit 620 of the blocking member 600 close to the display region, as shown in fig. 1.
In fig. 1 to 10, a denotes a display region, B denotes a barrier region, C denotes an under-screen sensing region, and N denotes a non-display region, which are described here.
In this embodiment, the array substrate 200 includes a substrate, an active layer on the substrate, a gate insulating layer on the active layer, a gate layer on the gate insulating layer, an interlayer insulating layer on the gate layer, and a source drain layer on the interlayer insulating layer.
In this embodiment, the array substrate 200, the light emitting device layer 400 on the array substrate 200, the package layer 500 on the light emitting device layer 400, and the lead layer 300 between the array substrate 200 and the light emitting device layer 400 are disposed in the display region. The lead layer 300 includes a first insulating layer 311 on the array substrate 200, a first connecting layer 321 on the first insulating layer 311, and a second insulating layer 312 on the first connecting layer 321, the second insulating layer 312 is made of an inorganic material, and the inorganic barrier unit 620 includes the second insulating layer 312 in the barrier region, as shown in fig. 1. The inorganic barrier unit 620 further includes an inorganic film layer of the encapsulation layer 500, and the second insulating layer 312 contacts with the inorganic film layer of the encapsulation layer 500 to form the inorganic barrier unit 620, so that the organic film layer of the encapsulation layer 500 can be prevented from overflowing to the edge of the display panel 100, and the reduction of the water and oxygen blocking performance of the edge of the display panel 100 can be avoided.
In this embodiment, a data signal line layer 210 on the array substrate 200 is further disposed in the blocking region, and the second insulating layer 312 covers the data signal line layer 210, as shown in fig. 2. The second insulating layer 312 directly covers the data signal line layer 210, so that the data signal line layer 210 is prevented from being corroded by other processes in the manufacturing process, and the data signal line layer 210 is protected; while better preventing ingress of water oxygen into the data line number layer when the display panel 100 is in use.
In this embodiment, the data signal line layer 210 and the source/drain layer are disposed on the same layer. The data signal line layer 210 is made of the same material as the source and drain layers.
In this embodiment, the encapsulation layer 500 includes a first inorganic encapsulation layer 510 close to the array substrate 200, an organic encapsulation layer 520 on the first inorganic encapsulation layer 510, and a second inorganic encapsulation layer 530 on the organic encapsulation layer 520, and an orthogonal projection of the organic encapsulation layer 520 on the array substrate 200 is located outside the data signal line layer 210, as shown in fig. 3. If the organic encapsulation layer 520 exists in the non-display area of the display panel 100, there is still a risk of water and oxygen intrusion, and the data signal line layer 210 is disposed away from the organic encapsulation layer 520, so that more inorganic film layers cover the data signal line layer 210, and water and oxygen intrusion into the data line layer is better prevented.
In this embodiment, the lead layer 300 further includes a second connection layer 322 on the second insulating layer 312 and an organic planarization layer 313 on the second connection layer 322. The retaining wall unit 610 includes the first insulating layer 311 located in the blocking region, the second insulating layer 312 located on the first insulating layer 311, and the organic planarization layer 313 located on the second insulating layer 312. In the blocking region, the second insulating layer 312 covers the data signal line layer 210 and the first insulating layer 311, the first insulating layer 311 is made of an organic material, the second insulating layer 312 includes a plurality of first openings 3121, and the organic planarization layer 313 is disposed in contact with the first insulating layer 311 through the first openings 3121, as shown in fig. 4. When the first insulating layer 311 is disposed in the blocking region, the height of the blocking member 600 in the blocking region can be increased, the first insulating layer 311 is made of an organic material, and the organic planarization layer 313 made of an organic material can be better bonded to the first insulating layer 311 through the first opening 3121, so that the bonding force between the first insulating layer 311 and the organic planarization layer 313 is increased, and the film layer misalignment is avoided.
In this embodiment, the material of the first insulating layer 311 and/or the second insulating layer 312 is an inorganic material, and the inorganic material may include a silicon nitride compound or/and a silicon oxide compound.
In this embodiment, the material of the organic planarization layer 313 is an organic material.
In this embodiment, the substrate includes a water and oxygen barrier layer and a buffer layer on the water and oxygen barrier layer. The material of the water oxygen barrier layer comprises a silicon oxygen compound. The material of the buffer layer comprises a silicon nitrogen compound or/and a silicon oxygen compound.
In this embodiment, the gate layer includes a plurality of gate units.
In this embodiment, the active layer includes a plurality of semiconductor units, and one of the semiconductor units corresponds to one of the gate units.
In this embodiment, the gate insulating layer and the interlayer insulating layer are made of a material including a silicon nitride compound or/and a silicon oxide compound.
In this embodiment, the first connection layer 321 and the second connection layer 322 are made of a metal conductive material. The first connection layer 321 and the second connection layer 322 may include a titanium aluminum titanium triple layer film.
In this embodiment, the source/drain layer includes a plurality of source/drain units, and the source/drain layer may be made of a titanium-aluminum-titanium three-layer film.
In this embodiment, the display panel 100 further includes a pixel defining layer 401 on the organic planarization layer 313. The pixel definition layer 401 includes a plurality of fourth vias, please refer to fig. 8 in detail.
In this embodiment, the display panel 100 further includes a light emitting device layer 400 disposed on the organic planarization layer 313 and on the same layer as the pixel defining layer 401. The light emitting device layer 400 includes a plurality of light emitting device cells 410. The light emitting device layer 400 includes an anode layer adjacent to one side of the organic planarization layer 313, a light emitting material layer on the anode layer, and a cathode layer 420 on the light emitting material layer. The anode layer includes a plurality of anodes, the anode layer is located between the pixel defining layer 401 and the organic flat layer 313, the cathode layer 420 is disposed on the whole surface, the light emitting material layer includes a plurality of light emitting material units, the light emitting material layer is located in the fourth via hole, the light emitting device unit 410 includes the anode close to one side of the organic flat layer 313, the light emitting material unit located on the anode, and the cathode layer 420 located on the light emitting material unit, which is specifically referred to fig. 8.
In this embodiment, the display panel 100 further includes a spacer layer located on the pixel definition layer 401, the spacer layer includes a plurality of spacers 540, and the retaining wall unit 610 further includes the spacers 540 located in the blocking region on the organic planarization layer 313 and the inorganic film layer in the encapsulation layer 500 located in the blocking region. The spacer 540 increases the height of the retaining wall unit 610, and improves the water and oxygen blocking performance.
In the present embodiment, in the direction from the display area to the non-display area, the distribution density of the retaining wall units 610 is increased after being decreased, specifically referring to fig. 6. In a direction from the first insulating layer 311 to the organic planarization layer 313, a cross-sectional area of the retaining wall unit 610 on the first plane is gradually increased, as shown in fig. 5. Wherein the first plane is parallel to the display panel 100. The distribution density of the retaining wall units 610 is increased in a direction close to the display area, so that the organic encapsulation layer 520 can be better prevented from overflowing, and the distribution density of the retaining wall units 610 is increased in a direction close to the edge of the display panel 100, so that the invasion path of external water and oxygen can be better prolonged, and the water and oxygen blocking performance of the blocking area is improved. The retaining wall unit 610 is in an inverted trapezoid shape, so as to better prevent the organic encapsulation layer 520 from overflowing and prolong the external water and oxygen invasion path, thereby protecting the display panel 100.
In the present embodiment, in the direction from the display area to the non-display area, the height of the retaining wall unit 610 is first decreased and then increased, specifically refer to fig. 5. The retaining wall unit 610 includes the second insulating layer 312 in the blocking region and the organic flat layer 313 in the blocking region, or the retaining wall unit 610 includes the first insulating layer 311 in the blocking region, the second insulating layer 312 in the blocking region and the organic flat layer 313 in the blocking region, or the retaining wall unit 610 includes the second insulating layer 312 in the blocking region, the first insulating layer 311 in the blocking region, the organic flat layer 313 in the blocking region and the inorganic film in the packaging layer 500 in the blocking region. The inorganic film layer in the encapsulation layer 500 within the barrier region includes the first inorganic encapsulation layer 510 or/and the second inorganic encapsulation layer 530. Being close to the display area direction the height of barricade unit 610 is higher, can block better organic encapsulation layer 520 overflows, keeps away from the display area direction barricade unit 610's height is higher, can prolong external water oxygen invasion route better, improves the separation water oxygen performance in block district.
In this embodiment, the display panel 100 further includes a lower-screen sensing area, the lower-screen sensing area is located in the display area, and a sensor is disposed in the lower-screen sensing area. The light emitting device layer 400 includes a plurality of light emitting device units 410, the second insulating layer 312 includes a plurality of second openings 3122, and the second openings 3122 are disposed between two adjacent light emitting device units 410 in the sensing area under the screen, as shown in fig. 7 and 8. The second insulating layer 312 is made of an inorganic material, and has better light transmittance compared with an organic material, and the second opening 3122 is added, so that light transmittance in the sensing area under the screen can be further improved, and the working effect of the sensor can be improved.
In this embodiment, the sensor includes any one or a combination of a camera, a fingerprint identification module, a distance sensor, and an infrared sensor. The number of the sensors in the under-screen sensing area may be one or more, and is not limited herein.
In this embodiment, the thickness of the second insulating layer 312 in the display area is smaller than the thickness of the second insulating layer 312 in the blocking area, specifically refer to fig. 2 and 5, and the thickness of the second insulating layer 312 in the under-screen sensing area is smaller than the thickness of the second insulating layer 312 in the display area, specifically refer to fig. 9. The second insulating layer 312 in the barrier region is thicker, which may provide a better barrier to water and oxygen. The lower thickness of the second insulating layer 312 in the sensing area under the screen can improve the light transmittance of the sensing area under the screen.
In this embodiment, a plurality of annular zones are disposed in the blocking zone, and the annular zones include a plurality of retaining wall units 610. Two adjacent retaining wall units 610 in two adjacent annular regions are arranged in a staggered manner, specifically referring to fig. 10. The blocking member 600 is arranged in a staggered manner, so that the external water and oxygen intrusion path is further prolonged, and the water and oxygen blocking performance of the blocking area is improved.
In this embodiment, the orthographic projection of the retaining wall unit 610 on the array substrate 200 is an i-shape, and two adjacent retaining wall units 610 in two adjacent annular regions are arranged in a staggered and opposite manner, as shown in fig. 11. The structure further prolongs the external water and oxygen intrusion path and improves the water and oxygen barrier performance of the barrier region.
This application has improved the separation water oxygen performance of display panel peripheral region through set up inorganic barrier unit between barrier region and demonstration, has protected display panel.
Referring to fig. 1 to fig. 12, the present application further discloses a manufacturing method of a display panel 100, where the display panel 100 includes a display area and a non-display area located at a periphery of the display area, the non-display area includes a blocking area disposed close to the display area, and the manufacturing method of the display panel 100 includes:
and S100, forming a second insulating layer 312 on the array substrate 200 in the blocking region.
S200, forming at least one blocking member 600 on the second insulating layer 312.
S300, forming an encapsulation layer 500 including a first inorganic encapsulation layer 510, an organic encapsulation layer 520, and a second inorganic encapsulation layer 530 on the barrier member 600.
The first inorganic encapsulation layer 510, the second inorganic encapsulation layer 530 and the second insulating layer 312 positioned at the periphery of the barrier member 600 form an inorganic barrier unit 620, and the boundary of the organic encapsulation layer 520 does not exceed the inorganic barrier unit 620 near the display region.
This application has improved the separation water oxygen performance of display panel peripheral region through set up inorganic barrier unit between barrier region and demonstration, has protected display panel.
The technical solution of the present application will now be described with reference to specific embodiments.
The manufacturing method of the display panel 100 includes:
s100, forming a second insulating layer 312 on the array substrate 200 in the blocking region, specifically referring to fig. 1.
In fig. 1 to 10, a denotes a display area, B denotes a barrier area, C denotes an under-screen sensing area, and N denotes a non-display area, which are described herein.
In this embodiment, the manufacturing method of the array substrate 200 includes:
s101, an active layer, a gate insulating layer, a gate layer, an interlayer insulating layer and a source drain layer are sequentially formed on a substrate.
In this embodiment, the gate layer includes a plurality of gate units.
In this embodiment, the active layer includes a plurality of semiconductor units, and one of the semiconductor units corresponds to one of the gate units.
In this embodiment, the substrate includes a water and oxygen barrier layer and a buffer layer on the water and oxygen barrier layer. The material of the water oxygen barrier layer comprises a silicon oxygen compound. The material of the buffer layer comprises a silicon nitrogen compound or/and a silicon oxygen compound.
In this embodiment, the gate insulating layer and the interlayer insulating layer are made of a material including a silicon nitride compound or/and a silicon oxide compound.
In this embodiment, the step of forming the source/drain layer includes:
s1011, sequentially forming titanium-aluminum-titanium three-layer material film layers on the interlayer insulating layer.
S1012, performing patterning on the titanium-aluminum-titanium three-layer material film layer, forming a source/drain layer in the display region of the display panel 100, and forming a data signal line layer 210 in the blocking region of the display panel 100, with reference to fig. 2.
In this embodiment, the source/drain layer includes a plurality of source/drain units, and the source/drain layer may be made of a titanium-aluminum-titanium three-layer film.
In this embodiment, a data signal line layer 210 on the array substrate 200 is further disposed in the blocking region, and the second insulating layer 312 covers the data signal line layer 210, which is specifically shown in fig. 2. The second insulating layer 312 directly covers the data signal line layer 210, so that the data signal line layer 210 is prevented from being corroded by other processes in the manufacturing process, and the data signal line layer 210 is protected; while better preventing ingress of water oxygen into the data line signal layer when the display panel 100 is in use.
In this embodiment, the data signal line layer 210 and the source/drain layer are disposed on the same layer. The data signal line layer 210 is made of the same material as the source and drain layers.
In this embodiment, before forming the second insulating layer 312, the method for manufacturing the display panel 100 further includes:
s102, forming a first insulating layer 311 on the array substrate 200.
S103, forming a first connection layer 321 on the first insulating layer 311.
In this embodiment, the step of forming the second insulating layer 312 includes:
s104, forming the second insulating layer 312 on the first connection layer 321.
In this embodiment, after forming the second insulating layer 312, the method for manufacturing the display panel 100 further includes:
in this embodiment, after forming the second insulating layer 312, the method for manufacturing the display panel 100 further includes:
s105, forming a second connection layer 322 on the second insulation layer 312.
S106, forming an organic planarization layer 313 on the second connection layer 322.
In this embodiment, the first insulating layer 311, the first connection layer 321, the second insulating layer 312, the second connection layer 322, and the organic planarization layer 313 constitute a lead layer 300.
And S107, forming a pixel defining layer 401 and a light-emitting device layer 400 on the organic flat layer 313.
And S108, forming a spacer layer on the light emitting device layer 400.
S200, forming at least one blocking member 600 on the second insulating layer 312.
In the present embodiment, at least one blocking member 600 is formed on the second insulating layer 312 in the blocking region, please refer to fig. 1 specifically. The blocking member 600 includes a retaining wall unit 610 and an inorganic blocking unit 620 located at the periphery of the retaining wall unit, and the boundary of the organic film layer of the encapsulation layer 500 does not exceed the inorganic blocking unit 620 close to the display region in the blocking member 600.
In this embodiment, the retaining wall unit 610 includes the first insulating layer 311 located in the blocking region, the second insulating layer 312 located on the first insulating layer 311, and the organic planarization layer 313 located on the second insulating layer 312. In the blocking region, the second insulating layer 312 covers the data signal line layer 210 and the first insulating layer 311, the first insulating layer 311 is made of an organic material, the second insulating layer 312 includes a plurality of first openings 3121, and the organic planarization layer 313 is disposed in contact with the first insulating layer 311 through the first openings 3121, as shown in fig. 4. When the first insulating layer 311 is disposed in the blocking region, the height of the retaining wall unit 610 in the blocking region can be increased, the first insulating layer 311 is made of an organic material, and the organic planarization layer 313 made of an organic material can be better contacted and bonded with the first insulating layer 311 through the first opening 3121, so that the bonding force between the first insulating layer 311 and the organic planarization layer 313 is increased, and the film layer dislocation is avoided.
In this embodiment, the display panel 100 further includes a spacer layer located on the pixel defining layer 401, the spacer layer includes a plurality of spacers 540, and the retaining wall unit 610 further includes the spacers 540 located in the blocking regions on the organic planarization layer 313 and inorganic films in the encapsulation layer 500 in the blocking regions, as shown in fig. 5 and 8. The height of the retaining wall unit 610 is increased, and the performance of blocking water and oxygen is improved.
In the present embodiment, in the direction from the display area to the non-display area, the distribution density of the retaining wall units 610 is increased after being decreased, specifically referring to fig. 6. In a direction from the first insulating layer 311 to the organic planarization layer 313, a cross-sectional area of the retaining wall unit 610 on the first plane is gradually increased, as shown in fig. 5. Wherein the first plane is parallel to the display panel 100. The distribution density of the retaining wall units 610 is increased in a direction close to the display area, so that the organic encapsulation layer 520 can be better prevented from overflowing, and the distribution density of the retaining wall units 610 is increased in a direction close to the edge of the display panel 100, so that the invasion path of external water and oxygen can be better prolonged, and the water and oxygen blocking performance of the blocking area is improved. The retaining wall unit 610 is in an inverted trapezoid shape, so as to better prevent the organic encapsulation layer 520 from overflowing and prolong the external water and oxygen invasion path, thereby protecting the display panel 100.
In the present embodiment, in the direction from the display area to the non-display area, the height of the retaining wall unit 610 first decreases and then increases, specifically referring to fig. 5. The retaining wall unit 610 includes the second insulating layer 312 in the blocking region and the organic flat layer 313 in the blocking region, or the retaining wall unit 610 includes the first insulating layer 311 in the blocking region, the second insulating layer 312 in the blocking region and the organic flat layer 313 in the blocking region, or the retaining wall unit 610 includes the second insulating layer 312 in the blocking region, the first insulating layer 311 in the blocking region, the organic flat layer 313 in the blocking region and the inorganic film in the packaging layer 500 in the blocking region. The inorganic film layer in the encapsulation layer 500 within the barrier region includes the first inorganic encapsulation layer 510 or/and the second inorganic encapsulation layer 530. Being close to the display area direction the height of barricade unit 610 is higher, can block better organic encapsulation layer 520 overflows, keeps away from the display area direction barricade unit 610's height is higher, can prolong external water oxygen invasion route better, improves the separation water oxygen performance in block district.
S300, forming an encapsulation layer 500 including a first inorganic encapsulation layer 510, an organic encapsulation layer 520, and a second inorganic encapsulation layer 530 on the barrier member 600.
In this embodiment, the first inorganic encapsulation layer 510, the second inorganic encapsulation layer 530 and the second insulating layer 312 located at the periphery of the barrier member 600 form an inorganic barrier unit 620, and the boundary of the organic encapsulation layer 520 does not exceed the inorganic barrier unit 620 near the display region, as shown in fig. 1. The inorganic barrier unit 620 may prevent the organic film layer of the encapsulation layer 500 from overflowing to the edge of the display panel 100, and avoid weakening the water and oxygen barrier performance of the edge of the display panel 100.
In this embodiment, the encapsulation layer 500 includes a first inorganic encapsulation layer 510 close to the array substrate 200, an organic encapsulation layer 520 on the first inorganic encapsulation layer 510, and a second inorganic encapsulation layer 530 on the organic encapsulation layer 520, and an orthogonal projection of the organic encapsulation layer 520 on the array substrate 200 is located outside the data signal line layer 210, as shown in fig. 3. If the organic encapsulation layer 520 exists in the non-display area of the display panel 100, there is still a risk of water and oxygen intrusion, and the data signal line layer 210 is disposed away from the organic encapsulation layer 520, so that more inorganic film layers cover the data signal line layer 210, and water and oxygen intrusion into the data line layer is better prevented.
In this embodiment, the display panel 100 further includes a lower-screen sensing area, the lower-screen sensing area is located in the display area, and a sensor is disposed in the lower-screen sensing area. The light emitting device layer 400 includes a plurality of light emitting device units 410, the second insulating layer 312 includes a plurality of second openings 3122, and the second openings 3122 are disposed between two adjacent light emitting device units 410 in the sub-screen sensing region, with reference to fig. 7 and 8. The second insulating layer 312 is made of an inorganic material, and has better light transmittance compared to an organic material, and the second opening 3122 is added, so that light transmittance in the sensing area under the screen can be further improved, and the working effect of the sensor can be improved.
In this embodiment, the sensor includes any one or a combination of a camera, a fingerprint identification module, a distance sensor, and an infrared sensor. The number of the sensors in the under-screen sensing area may be one or more, and is not limited herein.
In this embodiment, the thickness of the second insulating layer 312 in the display area is smaller than the thickness of the second insulating layer 312 in the blocking area, specifically refer to fig. 2 and 5, and the thickness of the second insulating layer 312 in the under-screen sensing area is smaller than the thickness of the second insulating layer 312 in the display area, specifically refer to fig. 9. The second insulating layer 312 in the blocking region is thicker, which may better block water and oxygen. The lower thickness of the second insulating layer 312 in the sensing area under the screen can improve the light transmittance of the sensing area under the screen.
In this embodiment, a plurality of annular zones are disposed in the blocking zone, and each annular zone includes a plurality of retaining wall units 610. Two adjacent retaining wall units 610 in two adjacent annular regions are arranged in a staggered manner, specifically referring to fig. 10. The blocking member 600 is arranged in a staggered manner, so that the external water and oxygen intrusion path is further prolonged, and the water and oxygen blocking performance of the blocking area is improved.
In this embodiment, the orthographic projection of the retaining wall units 610 on the array substrate 200 is an i-shaped, and two adjacent retaining wall units 610 in the two adjacent annular regions are arranged in a staggered and opposite manner, specifically referring to fig. 11. The structure further prolongs the external water and oxygen intrusion path and improves the water and oxygen barrier performance of the barrier region.
This application has improved the separation water oxygen performance of display panel peripheral region through set up inorganic barrier unit between barrier region and demonstration, has protected display panel.
The application discloses a display panel and a manufacturing method thereof. The display panel comprises a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a blocking area arranged close to the display area; the blocking area is internally provided with an array substrate, at least one blocking component positioned on the array substrate and an encapsulation layer positioned on the blocking component, the blocking component comprises a retaining wall unit and an inorganic blocking unit positioned on the periphery of the retaining wall unit, and the boundary of an organic film layer of the encapsulation layer does not exceed the inorganic blocking unit in the blocking component, which is close to the display area. This application has improved the separation water oxygen performance of display panel peripheral region through set up inorganic barrier unit between barrier region and demonstration, has protected display panel.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. The display panel is characterized by comprising a display area and a non-display area positioned at the periphery of the display area, wherein the non-display area comprises a blocking area arranged close to the display area;
the barrier region is internally provided with an array substrate, at least one barrier member positioned on the array substrate and an encapsulation layer positioned on the barrier member, the barrier member comprises a retaining wall unit and an inorganic barrier unit positioned on the periphery of the retaining wall member, and the boundary of an organic film layer of the encapsulation layer does not exceed the inorganic barrier unit in the barrier member, which is close to the display region;
the array substrate, the light-emitting device layer positioned on the array substrate, the packaging layer positioned on the light-emitting device layer and the lead layer positioned between the array substrate and the light-emitting device layer are arranged in the display area;
the lead layer comprises a first insulating layer positioned on the array substrate, a first connecting layer positioned on the first insulating layer and a second insulating layer positioned on the first connecting layer, the material of the second insulating layer is an inorganic material, and the inorganic blocking unit comprises the second insulating layer positioned in the blocking area;
and a data signal line layer positioned on the array substrate is also arranged in the blocking area, and the second insulating layer covers the data signal line layer.
2. The display panel of claim 1, wherein the encapsulation layer comprises a first inorganic encapsulation layer adjacent to the array substrate, an organic encapsulation layer on the first inorganic encapsulation layer, and a second inorganic encapsulation layer on the organic encapsulation layer, wherein an orthographic projection of the organic encapsulation layer on the array substrate is outside the data signal line layer.
3. The display panel according to claim 1, wherein the lead layer further comprises a second connection layer on the second insulating layer and an organic planarization layer on the second connection layer;
the retaining wall unit comprises the first insulating layer positioned in the blocking region, the second insulating layer positioned on the first insulating layer and the organic flat layer positioned on the second insulating layer;
in the blocking region, the second insulating layer covers the data signal line layer and the first insulating layer, the first insulating layer is made of an organic material, the second insulating layer comprises a plurality of first openings, and the organic flat layer is arranged in contact with the first insulating layer through the first openings.
4. The display panel according to claim 3, wherein the distribution density of the dam units is increased after being decreased in a direction from the display area to the non-display area;
in the direction from the first insulating layer to the organic flat layer, the cross-sectional area of the retaining wall unit on the first plane is gradually increased;
wherein the first plane is parallel to the display panel.
5. The display panel according to claim 1, wherein the height of the dam unit is increased after being decreased in a direction from the display area to the non-display area.
6. The display panel of claim 1, further comprising an under-screen sensing area, the under-screen sensing area being located within the display area, the under-screen sensing area having a sensor disposed therein;
the light emitting device layer comprises a plurality of light emitting device units, the second insulating layer comprises a plurality of second openings, and the second openings are arranged between every two adjacent light emitting device units in the sensing area under the screen.
7. The display panel according to claim 6, wherein a thickness of the second insulating layer in the display region is smaller than a thickness of the second insulating layer in the blocking region, and wherein a thickness of the second insulating layer in the under-screen sensing region is smaller than a thickness of the second insulating layer in the display region.
8. A manufacturing method of a display panel is characterized in that the display panel comprises a display area and a non-display area positioned at the periphery of the display area, the non-display area comprises a blocking area arranged close to the display area, and the manufacturing method of the display panel comprises the following steps:
forming a second insulating layer on the array substrate in the blocking region;
forming at least one blocking member on the second insulating layer;
forming an encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer on the barrier member;
wherein the first inorganic packaging layer, the second inorganic packaging layer and the second insulating layer located at the periphery of the blocking member form an inorganic blocking unit, the boundary of the organic packaging layer is not more than the inorganic blocking unit close to the display area, the display area is internally provided with the array substrate, a light emitting device layer located on the array substrate, the packaging layer located on the light emitting device layer and a lead layer located between the array substrate and the light emitting device layer, the lead layer comprises a first insulating layer located on the array substrate, a first connecting layer located on the first insulating layer and a second insulating layer located on the first connecting layer, the second insulating layer is made of an inorganic material, the inorganic blocking unit comprises the second insulating layer located in the blocking area, and a data signal line layer located on the array substrate is further arranged in the blocking area, the second insulating layer covers the data signal line layer.
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| CN114464754B (en) * | 2022-01-25 | 2023-05-12 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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