CN110739334A - Display panel, manufacturing method of display panel and detection method of display panel - Google Patents
Display panel, manufacturing method of display panel and detection method of display panel Download PDFInfo
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- CN110739334A CN110739334A CN201910983301.3A CN201910983301A CN110739334A CN 110739334 A CN110739334 A CN 110739334A CN 201910983301 A CN201910983301 A CN 201910983301A CN 110739334 A CN110739334 A CN 110739334A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- 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
- H10K50/841—Self-supporting sealing arrangements
-
- 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
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- 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
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N2013/003—Diffusion; diffusivity between liquids
Abstract
The invention provides display panels and a manufacturing method of the display panels, wherein the display panels comprise display areas and non-display areas, the display panels further comprise substrates, cover plates, packaging assemblies and at least diffusion layers, the cover plates are arranged opposite to the substrates, the packaging assemblies are arranged between the cover plates and the substrates, the packaging assemblies are arranged in the non-display areas, the diffusion layers are arranged on the substrates, the diffusion layers are arranged between the packaging assemblies and the display areas, and the diffusion layers diffuse when meeting water.
Description
Technical Field
The invention relates to the technical field of display, in particular to display panels, a manufacturing method of the display panels and a detection method of the display panels.
Background
Since an OLED (Organic Light-emitting diode) has advantages of self-luminescence, low power consumption, and color gamut, the OLED is increasingly applied in fields.
OLEDs are very sensitive to moisture and therefore require encapsulation structures to protect the OLEDs. However, due to the process of thinning, cutting, panel testing, etc., the packaging structure of the OLED is prone to fail, and the internal components thereof are prone to be corroded by water and oxygen, which causes the OLED to fail.
Therefore, it is necessary to provide display panels capable of reflecting whether the performance of the OLED packaging structure fails.
Disclosure of Invention
The invention aims to provide display panels, a manufacturing method of the display panels and a detection method of the display panels, which improve the accuracy of performance detection of the display panels.
The embodiment of the invention provides kinds of display panels, wherein each display panel comprises a display area and a non-display area, the non-display area is arranged around the display area, and the display panel further comprises:
a substrate;
the cover plate is arranged opposite to the base plate;
a package assembly disposed between the cover plate and the substrate, the package assembly being disposed in the non-display region;
at least diffusion layers, the diffusion layer sets up on the base plate, the diffusion layer sets up the encapsulation subassembly with between the display area, the diffusion layer meets the water and takes place the diffusion.
In an embodiment, the display panel further includes:
and the detection part is used for detecting whether the diffusion layer diffuses or not, and if so, determining that the packaging assembly fails.
In the embodiment, the diffusion layer is composed of kinds of polymer resin material, water-absorbing metal or water-absorbing metal oxide.
In an embodiment, the display panel includes:
a cathode landing zone disposed between the package assembly and the display zone;
the diffusion layer is disposed on the cathode landing zone.
In an embodiment, when the display panel includes a plurality of diffusion layers, the plurality of diffusion layers are sequentially disposed at intervals between the package assembly and the display area, wherein a width of the diffusion layer away from the display area is smaller than a width of the diffusion layer near the display area.
In the embodiment, the diffusion layer is disposed around the display region, or the diffusion layer is disposed on the side of the display region.
The embodiment of the invention also provides a manufacturing method of display panels, wherein each display panel comprises a display area and a non-display area, and the method comprises the following steps:
providing a substrate and a cover plate, the cover plate having a packaging component thereon, the packaging component being disposed in the non-display area;
forming at least diffusion layers on the substrate, wherein the diffusion layers are arranged in the non-display area and are diffused when meeting water;
through the encapsulation subassembly, will the base plate with the apron laminating makes the diffusion layer sets up the encapsulation subassembly with between the display area.
, the embodiment of the present invention further provides a method for detecting whether a package assembly in a display panel fails, where the display panel is provided with a diffusion layer, the diffusion layer is disposed between the package assembly and a display area of the display panel, and the method includes:
detecting whether the diffusion layer diffuses every preset time period;
if the diffusion does not occur, continuously detecting whether the diffusion layer is diffused or not at preset time intervals;
if diffusion occurs, the package assembly is determined to be failed.
In an embodiment, the detecting whether the diffusion layer diffuses every preset time period includes:
acquiring the current pattern of the diffusion layer every other preset time period;
determining whether the current pattern of the diffusion layer matches an initial pattern of the diffusion layer;
if the diffusion layer is matched with the diffusion layer, determining that the diffusion layer is not diffused;
and if not, determining that the diffusion layer is diffused.
In an embodiment, the detecting whether the diffusion layer diffuses every preset time period includes:
acquiring the current light transmittance of the diffusion layer at intervals of a preset time period;
judging whether the current light transmittance of the diffusion layer is the same as the initial light transmittance of the diffusion layer;
if the diffusion layers are the same, determining that the diffusion layers do not diffuse;
and if not, determining that the diffusion layer is diffused.
According to the display panel, the manufacturing method of the display panel and the detection method of the display panel, provided by the embodiment of the invention, whether the packaging assembly fails or not can be determined according to whether the diffusion layer diffuses or not by arranging the diffusion layer, so that the accuracy of performance detection of the display panel is improved.
In order to make the aforementioned and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below:
drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is a schematic view of a diffusion scene of a diffusion layer according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another of the display panel according to the embodiment of the invention.
Fig. 4 is a schematic flow chart illustrating a manufacturing method of a display panel according to an embodiment of the present invention.
Fig. 5 is a schematic flowchart of a method for detecting a display panel according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to 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.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least embodiments of the present invention the appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. The display panel 1 includes a display area a and a non-display area b disposed around the display area a. The display area a is used for displaying images.
The display panel 1 further includes a substrate 11, a cover plate 12, a packaging assembly 13, and at least diffusion layers 14, wherein the substrate 11 may be a rigid substrate or a rigid substrate, the substrate 11 is provided with a thin film transistor layer, an electroluminescent device layer, and the like, and the cover plate 12 is disposed opposite to the substrate 11.
The packing member 13 is disposed between the cover plate 12 and the substrate 11, and the packing member 13 is disposed at the non-display region b. The encapsulation member 13 may be composed of a plurality of inorganic-organic thin films, and the encapsulation member 13 is used to block the external water and oxygen. If the package assembly 13 fails, external water and oxygen may intrude, causing damage to other components in the display panel 1.
At least diffusion layers 14 are disposed on the substrate 11, and the diffusion layers 14 are disposed between the packaging component 13 and the display area a. when water vapor enters through the packaging component 13, the constituent materials of the diffusion layers 14 diffuse when encountering water, specifically, parts of the materials in the diffusion layers 14 react with water to diffuse and agglomerate, as shown in fig. 2, the diffusion layers 14 are originally flat, and the surface of the diffusion layers 14 after absorbing water may be convex or concave.
In the embodiment, the diffusion layer 14 may be disposed around the display area a, or disposed on the side of the display area a, specifically according to the area size of the non-display area b and other layout requirements.
In embodiment, as shown in fig. 3, when the display panel 1 includes a plurality of diffusion layers 14, the plurality of diffusion layers 14 are sequentially disposed at intervals between the encapsulation member 13 and the display area a, the plurality of diffusion layers 14 have different widths, and in order to facilitate observing whether the encapsulation member 13 fails, the width of the diffusion layer far away from the display area a may be set to be smaller than that of the diffusion layer near the display area a. specifically, as shown in fig. 3, the width of the diffusion layer 14 far away from the display area a is d1, the width of the diffusion layer 14 near the display area a is d2, and the value of d1 is smaller than d 2.
In the embodiment, the display panel 1 further includes a cathode landing zone disposed between the encapsulation assembly 13 and the display area a, the cathode landing zone is provided with only the cathode and no other organic materials, the diffusion layer 14 is disposed over the cathode landing zone, a narrow bezel can be achieved, and the layout of other components in the display panel 1 is not affected.
Wherein, the composition material of the diffusion layer 14 comprises kinds or more of polymer resin material, water-absorbing metal or water-absorbing metal oxide, the water-absorbing metal comprises calcium, magnesium, etc., the water-absorbing metal oxide comprises magnesium oxide, calcium oxide, etc. furthermore , the composition material of the diffusion layer 14 can also comprise lithium fluoride, magnesium fluoride or sodium fluoride.
In the embodiment, the display panel 1 further includes a detector for detecting whether the diffusion layer 14 has diffused, wherein the detector determines that the packaging assembly 13 is disabled if the diffusion layer 14 has diffused, wherein the detector can scan and image the diffusion layer to determine whether the diffusion layer 14 has diffused by comparing the current pattern of the diffusion layer with the initial pattern, wherein the initial pattern of the diffusion layer 14 is the pattern of the diffusion layer 14 just formed, and wherein the detector can also detect the light transmittance of the diffusion layer 14 and detect whether the diffusion layer 14 has diffused by determining whether the light transmittance of the diffusion layer 14 has changed in the embodiment.
The embodiment of the invention also provides a manufacturing method of display panels, wherein each display panel comprises a display area and a non-display area, and the non-display area is arranged around the display area, please refer to fig. 4, and fig. 4 is a flow schematic diagram of the manufacturing method of the display panel provided by the embodiment of the invention, and the manufacturing method comprises the following steps:
step S101, providing a substrate and a cover plate, wherein the cover plate has a package assembly disposed on the non-display area.
The substrate may be a rigid substrate or a rigid substrate. The substrate is provided with a thin film transistor layer, an electroluminescent device layer and other structures.
The packaging assembly is arranged in the non-display area. The encapsulation member may be composed of a plurality of inorganic-organic thin films, and is used to block the external water and oxygen. If the packaging assembly fails, external water and oxygen can invade, so that other components in the display panel are damaged.
Step S102, at least diffusion layers are formed on the substrate, the diffusion layers are arranged in the non-display area, and the diffusion layers are diffused when meeting water.
At least diffusion layers 14 are disposed on the substrate 11, and the diffusion layers 14 are disposed between the packaging component 13 and the display area a. when water vapor enters through the packaging component 13, the constituent materials of the diffusion layers 14 diffuse when encountering water, specifically, parts of the materials in the diffusion layers 14 react with water to diffuse and agglomerate, as shown in fig. 2, the diffusion layers 14 are originally flat, and the surface of the diffusion layers 14 after absorbing water may be convex or concave.
In the embodiment, the diffusion layer 14 may be disposed around the display area a, or disposed on the side of the display area a, specifically according to the area size of the non-display area b and other layout requirements.
In embodiment, as shown in FIG. 3, when the display panel 1 includes multiple diffusion layers 14, the multiple diffusion layers 14 are sequentially disposed at intervals between the packaging component 13 and the display area a. the multiple diffusion layers 14 have different widths, so as to facilitate the observation of whether the packaging component 13 fails, the width of the diffusion layer far away from the display area may be set to be smaller than that of the diffusion layer near the display area a. specifically, as shown in FIG. 3, the width of the diffusion layer 14 far away from the display area a is d1, the width of the diffusion layer 14 near the display area a is d2, and the value of d1 is smaller than d 2. in steps, the diffusion layer 14 near the display area a may also serve as a protection layer for the display area a, and after the diffusion layer 14 far away from the display area a fails, the components in the display area a are continuously protected.
In the embodiment, the display panel 1 further includes a cathode landing zone disposed between the encapsulation assembly 13 and the display area a, the cathode landing zone is provided with only the cathode and no other organic materials, the diffusion layer 14 is disposed over the cathode landing zone, a narrow bezel can be achieved, and the layout of other components in the display panel 1 is not affected.
Wherein, the composition material of the diffusion layer 14 comprises kinds or more of polymer resin material, water-absorbing metal or water-absorbing metal oxide, the water-absorbing metal comprises calcium, magnesium, etc., the water-absorbing metal oxide comprises magnesium oxide, calcium oxide, etc. furthermore , the composition material of the diffusion layer 14 can also comprise lithium fluoride, magnesium fluoride or sodium fluoride.
Step S103, the substrate and the cover plate are bonded together by the packaging assembly, so that the diffusion layer is disposed between the packaging assembly and the display area.
Specifically, the cover plate and the substrate are aligned and attached, the glass cement in the packaging layer is melted by laser, the cover plate and the substrate are bonded together at , and the diffusion layer is arranged between the packaging assembly and the display area.
, the present invention further provides a method for detecting whether a package assembly in the display panel fails, wherein the display panel has a diffusion layer disposed between the package assembly and a display area of the display panel, as shown in fig. 5, fig. 5 is a schematic flow chart of a method for manufacturing the display panel according to the present invention, the method includes:
step S201, detecting whether the diffusion layer diffuses every preset time period.
In the embodiment, the detecting whether the diffusion step occurs in the diffusion layer every preset time period includes:
and acquiring the current pattern of the diffusion layer at preset time intervals.
And judging whether the current pattern of the diffusion layer is matched with the initial pattern of the diffusion layer.
And if the diffusion layers are matched, determining that the diffusion layers are not diffused.
And if the diffusion layer is not matched, determining that the diffusion layer is diffused.
The pattern of the diffusion layer may be obtained according to the principle of light emission and the characteristics of the light reflecting ability of the constituent materials in the diffusion layer. Specifically, an optical automatic detection assembly may be integrated in the display panel, and then the diffusion layer is scanned and imaged by the optical automatic detection assembly every preset time period, so as to obtain a current pattern of the diffusion layer.
The initial pattern of the diffusion layer refers to the pattern of the diffusion layer just formed, and the initial pattern can be collected and stored in advance. When the current pattern of the diffusion layer needs to be compared, the initial pattern is called out for comparison.
If the diffusion layer absorbs moisture, the constituent materials of the diffusion layer react with the moisture, causing diffusion, agglomeration, and the like of the diffusion layer. So that the current pattern of the diffusion layer scanned by the optical automatic detection assembly will not match the initial pattern. If the diffusion layer does not absorb moisture, the diffusion layer will not change so that the current pattern of the diffusion layer scanned by the optical automatic detection assembly will match the initial pattern.
If the current pattern of the diffusion layer is matched with the initial pattern of the diffusion layer, the diffusion layer does not absorb water and diffuse, and the packaging assembly effectively blocks outside water vapor. If the current pattern of the diffusion layer is not matched with the initial pattern of the diffusion layer, the diffusion layer absorbs water and diffuses, namely the packaging assembly fails, and external water vapor enters the packaging assembly.
In the embodiment, the detecting whether the diffusion step occurs in the diffusion layer every preset time period includes:
and acquiring the current light transmittance of the diffusion layer at preset time intervals.
And judging whether the current light transmittance of the diffusion layer is the same as the initial light transmittance of the diffusion layer.
If the two are the same, the diffusion layer is determined not to be diffused.
If not, determining that the diffusion layer is diffused.
Specifically, parts of the material in the diffusion layer react with water to generate diffusion and agglomeration, and if the diffusion layer is originally in a flat state, the surface of the diffusion layer after absorbing water can be raised or sunken, so that the light transmittance of the diffusion layer can be changed.
The initial light transmittance of the diffusion layer refers to the light transmittance of the diffusion layer immediately after formation, and the initial light transmittance can be collected and stored in advance. And when the light transmittance of the diffusion layer needs to be compared, calling the initial light transmittance out for comparison.
If the current light transmittance of the diffusion layer is the same as the initial light transmittance, the diffusion layer does not have the phenomena of agglomeration, diffusion and the like, namely, the diffusion layer does not absorb moisture, and the packaging assembly effectively blocks external water vapor. If the current light transmittance of the diffusion layer is different from the initial light transmittance, the diffusion layer is agglomerated and diffused, namely, the diffusion layer absorbs moisture, and the packaging assembly fails, so that external water vapor is invaded.
Step S202, if no diffusion occurs, continuously detecting whether the diffusion layer diffuses at preset time intervals.
In summary, if the diffusion layer is not diffused, it is continuously detected whether the diffusion layer is diffused every preset time period to perform continuous monitoring.
In step S203, if diffusion occurs, it is determined that the package assembly is failed.
If the diffusion layer diffuses, the package assembly is prompted to be repaired.
According to the display panel, the manufacturing method of the display panel and the detection method of the display panel, provided by the embodiment of the invention, whether the packaging assembly fails or not can be determined according to whether the diffusion layer diffuses or not by arranging the diffusion layer, so that the accuracy of performance detection 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)
- A display panel of kinds, wherein the display panel includes a display area and a non-display area, the non-display area is disposed around the display area, the display panel further includes:a substrate;the cover plate is arranged opposite to the base plate;a package assembly disposed between the cover plate and the substrate, the package assembly being disposed in the non-display region;at least diffusion layers, the diffusion layer sets up on the base plate, the diffusion layer sets up the encapsulation subassembly with between the display area, the diffusion layer meets the water and takes place the diffusion.
- 2. The display panel according to claim 1, characterized in that the display panel further comprises:and the detection part is used for detecting whether the diffusion layer diffuses or not, and if so, determining that the packaging assembly fails.
- 3. The display panel according to claim 1, wherein the diffusion layer is composed of kinds or more of a polymer resin material, a water-absorbent metal, or a water-absorbent metal oxide.
- 4. The display panel according to claim 1, characterized in that the display panel comprises:a cathode landing zone disposed between the package assembly and the display zone;the diffusion layer is disposed on the cathode landing zone.
- 5. The display panel of claim 1, wherein when the display panel comprises a plurality of diffusion layers, the plurality of diffusion layers are sequentially spaced between the package assembly and the display area, wherein a width of a diffusion layer away from the display area is less than a width of a diffusion layer adjacent to the display area.
- 6. The display panel according to claim 1, wherein the diffusion layer is provided around the display region, or wherein the diffusion layer is provided on the side of the display region.
- 7, A method for manufacturing a display panel, the display panel comprising a display area and a non-display area, the non-display area surrounding the display area, the method comprising:providing a substrate and a cover plate, the cover plate having a packaging component thereon, the packaging component being disposed in the non-display area;forming at least diffusion layers on the substrate, wherein the diffusion layers are arranged in the non-display area and are diffused when meeting water;through the encapsulation subassembly, will the base plate with the apron laminating makes the diffusion layer sets up the encapsulation subassembly with between the display area.
- 8, kinds of display panel's detection method for whether encapsulation subassembly is inefficacy to display panel in, display panel is equipped with the diffusion layer, the diffusion layer setting is in the encapsulation subassembly with display panel's display area between, its characterized in that includes:detecting whether the diffusion layer diffuses every preset time period;if the diffusion does not occur, continuously detecting whether the diffusion layer is diffused or not at preset time intervals;if diffusion occurs, the package assembly is determined to be failed.
- 9. The method for detecting a display panel according to claim 8, wherein the step of detecting whether the diffusion layer diffuses every preset time period comprises:acquiring the current pattern of the diffusion layer every other preset time period;determining whether the current pattern of the diffusion layer matches an initial pattern of the diffusion layer;if the diffusion layer is matched with the diffusion layer, determining that the diffusion layer is not diffused;and if not, determining that the diffusion layer is diffused.
- 10. The method for detecting a display panel according to claim 8, wherein the step of detecting whether the diffusion layer diffuses every preset time period comprises:acquiring the current light transmittance of the diffusion layer at intervals of a preset time period;judging whether the current light transmittance of the diffusion layer is the same as the initial light transmittance of the diffusion layer;if the diffusion layers are the same, determining that the diffusion layers do not diffuse;and if not, determining that the diffusion layer is diffused.
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| CN201910983301.3A CN110739334A (en) | 2019-10-16 | 2019-10-16 | Display panel, manufacturing method of display panel and detection method of display panel |
| PCT/CN2019/117563 WO2021072858A1 (en) | 2019-10-16 | 2019-11-12 | Display panel and manufacturing method and detection method therefor |
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| CN201910983301.3A CN110739334A (en) | 2019-10-16 | 2019-10-16 | Display panel, manufacturing method of display panel and detection method of display panel |
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| CN108649063A (en) * | 2018-07-25 | 2018-10-12 | 京东方科技集团股份有限公司 | A kind of oled substrate, display panel |
| CN108807719A (en) * | 2018-09-04 | 2018-11-13 | 京东方科技集团股份有限公司 | Oled display substrate, display device and preparation method thereof |
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