CN106298571B - A kind of OLED display device foreign matter detecting method and OLED display device - Google Patents
A kind of OLED display device foreign matter detecting method and OLED display device Download PDFInfo
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- CN106298571B CN106298571B CN201610756895.0A CN201610756895A CN106298571B CN 106298571 B CN106298571 B CN 106298571B CN 201610756895 A CN201610756895 A CN 201610756895A CN 106298571 B CN106298571 B CN 106298571B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
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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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/20—Sequence of activities consisting of a plurality of measurements, corrections, marking or sorting steps
- H01L22/24—Optical enhancement of defects or not directly visible states, e.g. selective electrolytic deposition, bubbles in liquids, light emission, colour change
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
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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
- H10K50/844—Encapsulations
Abstract
The present invention relates to display technology field, a kind of OLED display device foreign matter detecting method and OLED display device are disclosed, the oled layer that detection method is included in OLED display device forms foreign bodies detection layer away from the side of substrate, provided with multiple accommodating cavities adjacent to each other and the developer being arranged in multiple accommodating cavities in foreign bodies detection layer, developer includes being provided with a kind of reactant at least two reactants for producing chromogenic reaction in contact, each accommodating cavity；Detection pressure being applied to foreign bodies detection layer, foreign matter is whether there is on the region detection oled layer for producing chromogenic reaction according to whether there is in foreign bodies detection layer.This method can detect the foreign matter between OLED and packaging film in time during OLED carries out thin-film package, improve the problem of OLED display device characteristics of luminescence for finding the foreign matter between packaging film and OLED display device by reliability accelerated test method and causing is lost.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of OLED display device foreign matter detecting method and OLED are shown
Device.
Background technology
OLED (Organic Light-Emitting Diode, organic electroluminescent) display devices are with its self-luminous, hair
Light visual angle is big, fast response time, it is frivolous the features such as, by more and more extensive concern, as being possible to replace liquid crystal display
Flat panel display technology of future generation.
Organic luminous layer and metal electrode in OLED display device are easily corroded by steam and oxygen, so as to cause OLED's
Service life declines.To improve the service life of OLED display device, needed in the production process of OLED display device to it
It is packaged to completely cut off steam and oxygen, development recently as flexible display technologies and to the lightening requirement of display panel
Improve, film encapsulation possesses bent and more frivolous characteristic because of it, obtained in the production of OLED display device
It is widely applied.
During thin-film package is carried out to OLED display device, it is possible to packaging film and OLED display device it
Between enter foreign matter, and then cause during OLED display device subsequent use to show bad caused by foreign matter, reduce
The yield of OLED products.It is general at present using trusting and the display is bad generally will not immediately occur after encapsulation process terminates
Property accelerated test method find foreign matter between packaging film and OLED display device, the OLED display device characteristics of luminescence can be caused
Loss, reduces the service life of OLED display device.
The content of the invention
The invention provides a kind of OLED display device foreign matter detecting method and OLED display device, it can enter in OLED
The foreign matter between OLED and packaging film is detected during row thin-film package in time, improves and is accelerated by reliability
The OLED display device characteristics of luminescence loss that method of testing finds the foreign matter between packaging film and OLED display device and caused
Problem, so as to improve the service life of OLED display device.
To achieve the above object, the present invention provides following technical scheme：
A kind of OLED display device foreign matter detecting method, including：
Formed and set in foreign bodies detection layer, the foreign bodies detection layer away from the side of substrate in the oled layer of OLED display device
There are multiple accommodating cavities adjacent to each other and the developer being arranged in the multiple accommodating cavity, the developer includes at least two
Produced in contact and a kind of reactant is provided with the reactant of chromogenic reaction, each accommodating cavity, and provided with described at least two
The multiple accommodating cavity mixed distribution of reactant；
To the foreign bodies detection layer apply detection pressure, the detection pressure be more than or equal to described first release threshold value and
Less than the described second release threshold value；Wherein, in the foreign bodies detection layer in region corresponding with the foreign matter on the oled layer
Accommodating cavity discharges at least two reactants when pressure exceedes the described first release threshold value, and the accommodating cavity in other regions exists
At least two reactants are discharged when pressure is more than the second release threshold value, the first release threshold value is less than the described second release
Threshold value；
If it is determined that there is the region for producing chromogenic reaction in foreign bodies detection layer, it is determined that on the oled layer with it is described
Produced in foreign bodies detection layer at the position corresponding to the region of chromogenic reaction and there is foreign matter；
If it is determined that the region for producing chromogenic reaction is not present in the foreign bodies detection layer, it is determined that do not deposited on the oled layer
In foreign matter.
In the OLED display device foreign matter detecting method that the present invention is provided, there is foreign matter on such as oled layer, then where foreign matter
The corresponding accommodating cavity in region discharges at least two reactants under detection pressure effect, and any two kinds of reactants contact produces colour developing
Reaction, the color region generated according to chromogenic reaction can determine that position of the foreign matter on oled layer, and this method can be
OLED carries out detecting the foreign matter between OLED and packaging film during thin-film package in time, improves and passes through
The OLED display device that reliability accelerated test method finds the foreign matter between packaging film and OLED display device and caused lights
The problem of performance losses, so as to improve the service life of OLED display device.
Preferably, OLED display device oled layer away from substrate side formed foreign bodies detection layer, specifically include：
Multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated to the side of substrate, to be formed
The foreign bodies detection layer, wherein, each detection particle has been internally formed at least one described accommodating cavity.
Further, multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated from the one of substrate
Side, is specifically included：
Using ink printed mode, screen printing mode or organic layer coats mode, by multiple detections, particle is adjacent to each other sets
The oled layer for being placed in OLED display device deviates from the side of substrate.
Further, multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated from the one of substrate
Side, is specifically included：
By multiple detection particle OLED adjacent to each other for being arranged at OLED display device with least two different-diameters
Layer deviates from the side of substrate；Or,
Multiple detection particle oled layers adjacent to each other for being arranged at OLED display device with same diameter are deviated from into base
The side of plate.
Further, multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated from the one of substrate
Side, is specifically included：
Multiple diameters are more than 1 μm of detection particle oled layer adjacent to each other for being arranged at OLED display device away from substrate
Side.
Preferably, OLED display device oled layer away from substrate side formed foreign bodies detection layer, specifically include：
Formed in any one layer packaging film of the oled layer away from the side of substrate away from the surface of the oled layer side
The foreign bodies detection layer.
Further, after it is determined that foreign matter is not present on the oled layer, in addition to：
Remove the foreign bodies detection layer.
Preferably, OLED display device oled layer away from substrate side formed foreign bodies detection layer, specifically include：
The formation for deviating from the oled layer side in any one layer packaging film of the oled layer away from the side of substrate is encapsulated
The foreign bodies detection layer of the oled layer.
Further, detection pressure is applied to foreign bodies detection layer, specifically included：
Layer protecting film is attached away from the side of the oled layer in foreign bodies detection layer, with to foreign bodies detection layer
Apply detection pressure.
Further, after it is determined that foreign matter is not present on the oled layer, in addition to：
Fixation treatment is carried out at least one of developer reactant, so that at least two in the developer
Reactant does not produce chromogenic reaction after contact.
Further, every kind of reactant is transparence before the fixation treatment and after the fixation treatment；
Or,
At least one reactant is nontransparent shape before the fixation treatment, and is transparent after the fixation treatment
Shape.
Present invention also offers a kind of OLED display device, the OLED display device is in preparation process using as above institute
The OLED display device foreign matter detecting method stated carries out foreign bodies detection.
Brief description of the drawings
Fig. 1 is the flow chart for the OLED display device foreign matter detecting method that the present embodiment is provided；
Fig. 2 is the structural representation of the OLED display device of step S101 formation；
Fig. 3 is to use to form the structural representation that diaphragm applies foreign bodies detection layer the OLED formed after pressure；
Fig. 4 is the structural representation that the OLED display device after diaphragm is set on foreign bodies detection layer；
Fig. 5 be foreign bodies detection layer be used as packaging film when OLED display device structural representation.
Reference：
10, substrate；20, oled layer；30, foreign bodies detection layer；300, detect particle；31, accommodating cavity；32, developer；321,
First reactant；322, the second reactant；40, the first packaging film；50, the second packaging film；60, diaphragm.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Embodiment one：
A kind of OLED display device foreign matter detecting method is present embodiments provided, shown in Figure 1, Fig. 1 is the present embodiment
The flow chart of the OLED display device foreign matter detecting method of offer, including：
Step S101, shown in Figure 2, Fig. 2 is the structural representation of the OLED display device of step S101 formation,
The oled layer 20 of OLED display device is formed in foreign bodies detection layer 30, foreign bodies detection layer 30 provided with multiple away from the side of substrate 10
Accommodating cavity 31 adjacent to each other and the developer 32 being arranged in multiple accommodating cavities 31, developer 32 include at least two in contact
When produce chromogenic reaction reactant.Accommodating cavity 31 be formed at foreign bodies detection layer 30 in cavity, and it is salable accommodate reaction
Thing；The specific composition of reactant is not limited in step S101, as long as colour developing can be produced by meeting the mixing of at least two reactants
Reaction, for example with phenol and iron chloride, or uses potassium permanganate and hydroxyl, amino, aldehydes etc.；To simplify foreign bodies detection
Reactant in the structure of layer 30, the present embodiment is two kinds, i.e., the first reactant 321 and the second reactant 322 shown in Fig. 2,
A kind of reactant, and the mixed distribution of multiple accommodating cavities 31 provided with least two reactants are provided with each accommodating cavity 31, with
Each accommodating cavity 31 for being provided with the first reactant 321 is set to abut at least one accommodating cavity 31 for being provided with the second reactant 322；
Step S102, to foreign bodies detection layer 30 apply detection pressure, detection pressure be more than or equal to first release threshold value and
Less than the second release threshold value；Wherein, the accommodating cavity 31 in foreign bodies detection layer 30 in region corresponding with the foreign matter on oled layer exists
At least two reactants are discharged when pressure is more than the first release threshold value, the accommodating cavity 31 in other regions is super in pressure
At least two reactants are discharged when crossing the second release threshold value, the first release threshold value is less than the second release threshold value；To foreign bodies detection
During layer 30 applies detection pressure, in the presence of having foreign matter on oled layer, the foreign bodies detection layer with foreign matter corresponding position
Accommodating cavity 31 in 30 is extruded towards oled layer side by foreign matter, causes its suffered pressure larger, in foreign bodies detection layer 30
When pressure meets or exceeds the first release threshold value and the not up to second release threshold value, the accommodating cavity 31 extruded by foreign matter discharges it
Interior reactant, and the accommodating cavity 31 not extruded by foreign matter is not discharged the reactant in it；In the present embodiment, it can adjust accommodating
The outer wall thickness of chamber 31, the pressure made in foreign bodies detection layer 30 meets or exceeds the first release threshold value and the not up to second release threshold
During value, the outer wall rupture of the accommodating cavity 31 extruded by foreign matter, to discharge the reactant that it is internal；
Step S103, is determined in foreign bodies detection layer with the presence or absence of the region for producing chromogenic reaction, if so, then performing step
S104；If it is not, then performing step S105；
Step S104, however, it is determined that foreign bodies detection layer in exist produce chromogenic reaction region, it is determined that on oled layer with it is different
Produced in analyte detection layer at the position corresponding to the region of chromogenic reaction and there is foreign matter；Because foreign bodies detection layer pressure reach or
During more than the first release threshold value and the not up to second release threshold value, the accommodating cavity extruded by foreign matter discharges the reactant in it,
And at least two reactant mixing produce chromogenic reaction, it is signable go out foreign matter exist region；
Step S105, however, it is determined that the region for producing chromogenic reaction is not present in foreign bodies detection layer, it is determined that on oled layer not
There is foreign matter.
In the OLED display device foreign matter detecting method that the present invention is provided, there is foreign matter on such as oled layer, then where foreign matter
The corresponding accommodating cavity in region discharges at least two reactants under detection pressure effect, and any two kinds of reactants contact produces colour developing
Reaction, the color region generated according to chromogenic reaction can determine that position of the foreign matter on oled layer, and this method can be
OLED carries out detecting the foreign matter between OLED and packaging film during thin-film package in time, improves and passes through
The OLED display device that reliability accelerated test method finds the foreign matter between packaging film and OLED display device and caused lights
The problem of performance losses, so as to improve the service life of OLED display device.
In a kind of preferred embodiment, step S101, the side for deviating from substrate in the oled layer of OLED display device forms foreign matter
Detection layers, can be realized in the following way：
It is shown in Figure 2, multiple detection oled layers 20 adjacent to each other for being arranged at OLED display device of particle 300 are deviated from
The side of substrate 10, to form foreign bodies detection layer 30, wherein, each detection particle 300 has been internally formed at least one accommodating cavity
31。
Detection particle in the present embodiment can realize that microcapsules are diameters in micron to millimeter level range using microcapsules
Interior spherical particle, can be by liquid, gas or solids package in cyst membrane, and the material in microcapsules is isolated with external environment.Tool
Body, each microcapsules inner hollow is packaged with a kind of reactant to be formed in one or more accommodating cavities, each accommodating cavity.
It is arranged on multiple detection particles are adjacent to each other on oled layer and tile as at least one layer, you can forms above-mentioned foreign bodies detection layer.
Further, it is above-mentioned that multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated from into substrate
Side, can specifically be realized using ink printed mode, screen printing mode or organic layer coats mode, in specific implementation, inspection
At least one layer should be laid on oled layer by surveying particle.
Further, prepare detection particle when, can by detect particle diameter be set to it is a variety of, to sense different size
Foreign matter, then the above-mentioned side that multiple detection particle oled layers adjacent to each other for being arranged at OLED display device are deviated to substrate,
It can specifically realize in the following way：
By multiple detection particle OLED adjacent to each other for being arranged at OLED display device with least two different-diameters
Layer deviates from the side of substrate；Preferably, the reactant set in the detection particle of different-diameter occurs what is produced after chromogenic reaction
Color is different, then according to the color of chromogenic reaction and the corresponding relation of the diameter of detection particle, it may be determined that with foreign bodies detection layer
Occurs the diameter of the foreign matter on the corresponding oled layer in region of foreign body reaction.
In addition, can also be disposed as the diameter that detect particle identical, then above-mentioned by multiple detections, particle is adjacent to each other sets
The oled layer for being placed in OLED display device deviates from the side of substrate, can specifically realize in the following way：
Multiple detection particle oled layers adjacent to each other for being arranged at OLED display device with same diameter are deviated from into base
The side of plate；Preferably, the diameter of detection particle should be less than the diameter of foreign matter, and the diameter of foreign matter can be after testing
Drawn with after statistics.
It should be noted that to be ruptured after the outer wall of detection particle is extruded by foreign matter, detecting the diameter of particle
It should be less than or equal to the diameter of foreign matter, it is however generally that, the diameter of detection particle should be greater than 1 micron.Then further, will be many
The individual detection particle oled layer adjacent to each other for being arranged at OLED display device deviates from the side of substrate, specifically includes：
Multiple diameters are more than 1 μm of detection particle oled layer adjacent to each other for being arranged at OLED display device away from substrate
Side.
In a kind of preferred embodiment, to cause damage, step to oled layer when avoiding and foreign bodies detection layer is formed on oled layer
, need to be by foreign bodies detection layer shape when the oled layer of OLED display device forms foreign bodies detection layer away from the side of substrate in S101
Deviate from into any one layer of packaging film in oled layer away from the side of substrate on the surface of oled layer side, packaging film is used for
Oled layer is packaged to completely cut off the steam and oxygen in the external world, while foreign bodies detection layer can be made to separate with oled layer, it is to avoid two
Person directly contacts and damage is caused to oled layer；It is shown in Figure 2, encapsulated in oled layer 20 away from the first of the side of substrate 10
Film 40 forms foreign bodies detection layer 30 away from the surface of the side of oled layer 20, thin frequently with overlapping setting multilayer organic packages at present
The method of film and inorganic encapsulated film, to improve the sealing property of packaging film, the first packaging film 40 shown in Fig. 2 can be
Organic packages film or inorganic encapsulated film, are the further sealing property for improving packaging film, and shown in Figure 3, Fig. 3 is step
Foreign bodies detection layer in another structural representation of the OLED display device of rapid S101 formation, Fig. 3 is formed at overlapping setting
On first packaging film 40 and the second packaging film 50, in specific implementation, the first packaging film is typically set to inorganic encapsulated
Film, the second packaging film 50 is set to organic packaging film, and to improve sealing property, the number of plies of packaging film is not limited to Fig. 2
Shown in Fig. 3, it can be more than two layers, to improve the sealing property to oled layer.Preferably, it is the detection of raising foreign bodies detection layer
Sensitivity, foreign bodies detection layer is formed at the surface of the one layer of packaging film directly contacted with oled layer.
In a kind of preferred embodiment, step S105 is after it is determined that be not present foreign matter on oled layer, to the place of foreign bodies detection layer
Reason mode can be realized using the following two kinds mode：
Mode one, removes foreign bodies detection layer, after foreign bodies detection layer is removed, and packaging film, guarantor can be set on oled layer
Cuticula is packaged to oled layer.
Mode two, retains foreign bodies detection layer, and set dress film, diaphragm to seal oled layer on foreign bodies detection layer
Dress, shown in Figure 4, Fig. 4 is the structural representation that the OLED display device after diaphragm is set on foreign bodies detection layer, Fig. 4
In foreign bodies detection layer 30 be arranged on one layer of first packaging film 40, be formed with diaphragm 60 on foreign bodies detection layer 30, with
Oled layer is packaged, diaphragm is arranged at the outermost of OLED display device, physical protection can be carried out to display device；Tool
During body is implemented, the packaging film generally inorganic thin film directly contacted with diaphragm, therefore as shown in figure 4, in foreign bodies detection layer
Need to set one layer of first packaging film 40 between 30 and diaphragm 60, and the first packaging film 40 is inorganic thin film.
In the implementation, foreign bodies detection layer is alternatively arranged as one layer of organic packages film and used, for example, see Fig. 5 institutes
Show, Fig. 5 be foreign bodies detection layer be used as packaging film when OLED display device structural representation, foreign bodies detection layer 30 periphery
It is tightly connected with substrate 10, the encapsulation effect to oled layer 20 can be played, foreign bodies detection layer 30 now is organic equivalent to one layer
Packaging film, to improve sealing effectiveness, the first packaging film 40 being arranged between foreign bodies detection layer 30 and oled layer 20 is preferred
Using inorganic encapsulated film, to form the organic and inorganic packaging film of overlapping setting, the packaging effect to oled layer 20 is improved,
In specific implementation, because of the packaging film generally inorganic thin film directly contacted with diaphragm, as shown in figure 5, foreign bodies detection layer 30
One layer of first packaging film 40 for being inorganic thin film should be set again between diaphragm 60.
Due to that can be formed when attaching diaphragm on foreign bodies detection layer to foreign bodies detection layer in pressure, a kind of preferred embodiment,
It is determined that after foreign matter is not present on oled layer and when also needing to retain foreign bodies detection layer, step S102 applies to foreign bodies detection layer
Pressure is detected, can be realized in the following way：
Layer protecting film is formed away from the side of oled layer in foreign bodies detection layer, to apply detection pressure to foreign bodies detection layer
Power, the structure of the OLED of which formation uses roller to diaphragm referring to when shown in Fig. 4 or Fig. 5, attaching diaphragm 60
60 are rolled to improve the compactness of diaphragm 60, and detection pressure can be applied to foreign bodies detection layer 30 while rolling.
Except above-mentioned in addition to the mode for detecting pressure is applied to foreign bodies detection layer by the way of attaching diaphragm, detecting
Also detection pressure can be applied to foreign bodies detection layer using other modes in journey, for example, foreign bodies detection layer can directly be rolled using roller
Pressure, here is omitted.
Further, after it is determined that foreign matter is not present on oled layer, and when retaining foreign bodies detection layer, to avoid foreign matter
Release reaction thing after accommodating cavity in detection layers is pressurized and produce chromogenic reaction, and cause what the color developing effect of OLED was reduced
Problem, step S105 also includes after it is determined that foreign matter is not present on oled layer：
Fixation treatment is carried out at least one of developer reactant, so that at least two reactants in developer exist
Chromogenic reaction is not produced after contact.Can be produced in fixation treatment, in developer chromogenic reaction at least one reactant decompose or
Other materials are converted into, so that at least two reactants that chromogenic reaction can be produced in developer will not produce colour developing now after mixing
As during the follow-up use of OLED, causing the reactant in accommodating cavity to discharge and mix even if foreign bodies detection layer is pressurized
Close, will not also produce chromogenic reaction, improve and produce colour developing because of release reaction thing after the accommodating cavity in foreign bodies detection layer is pressurized
Reaction, and the problem of cause the color developing effect of OLED to reduce.In specific implementation, the reactant in developer should be selected and can divided
Solution or the reactant of conversion, fixation treatment can be using modes such as heating or illumination, and here is omitted.
Further, for improve foreign bodies detection layer cause OLED display device luminance-reduction the problem of, fixation treatment it
Every kind of reactant in developer afterwards should be transparent, i.e., every kind of reactant is before fixation treatment and after fixation treatment
It is transparence；Or, at least one reactant is nontransparent shape before fixation treatment, and it is transparent after fixation treatment
Shape, to improve the light transmittance of foreign bodies detection layer, and then improves OLED display brightness.
Embodiment two：
A kind of OLED display device is present embodiments provided, the OLED display device is in preparation process using as described above
OLED display device foreign matter detecting method carry out foreign bodies detection.
The foreign bodies detection that the OLED display device that the present embodiment is provided is provided in preparation process using embodiment one is carried out
Foreign bodies detection, can in time be detected different between OLED and packaging film during OLED carries out thin-film package
Thing, improves the OLED for finding the foreign matter between packaging film and OLED display device by reliability accelerated test method and causing
The problem of display device characteristics of luminescence is lost, so as to improve the service life of OLED display device.
It should be noted that the structure of the OLED display device shown in Fig. 2-Fig. 5 is the system in OLED display device
Intermediary during standby, the structure for the OLED display device that the present embodiment is provided is not with being limited shown in Fig. 2-Fig. 5.
Obviously, those skilled in the art can carry out various changes and modification without departing from this hair to the embodiment of the present invention
Bright spirit and scope.So, if these modifications and variations of the present invention belong to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of OLED display device foreign matter detecting method, it is characterised in that including：
Formed in the oled layer of OLED display device away from the side of substrate in foreign bodies detection layer, the foreign bodies detection layer provided with many
Individual accommodating cavity adjacent to each other and the developer being arranged in the multiple accommodating cavity, the developer are connecing including at least two
Produced when touching and a kind of reactant is provided with the reactant of chromogenic reaction, each accommodating cavity, and provided with described at least two reactions
The multiple accommodating cavity mixed distribution of thing；
Apply detection pressure to foreign bodies detection layer, the detection pressure is more than or equal to the first release threshold value and less than second
Discharge threshold value；Wherein, the accommodating cavity in the foreign bodies detection layer in region corresponding with the foreign matter on the oled layer is suffered
Pressure discharges at least two reactants when exceeding the described first release threshold value, and the accommodating cavity in other regions exceedes in pressure
At least two reactants are discharged during the second release threshold value, the first release threshold value is less than the described second release threshold value；
If it is determined that there is the region for producing chromogenic reaction in the foreign bodies detection layer, it is determined that with the foreign matter on the oled layer
Produced in detection layers at the position corresponding to the region of chromogenic reaction and there is foreign matter；
If it is determined that the region for producing chromogenic reaction is not present in the foreign bodies detection layer, it is determined that be not present on the oled layer different
Thing.
2. OLED display device foreign matter detecting method according to claim 1, it is characterised in that in OLED display device
Oled layer forms foreign bodies detection layer away from the side of substrate, specifically includes：
Multiple detection particles oled layer adjacent to each other for being arranged at OLED display device is deviated to the side of substrate, it is described to be formed
Foreign bodies detection layer, wherein, each detection particle has been internally formed at least one described accommodating cavity.
3. OLED display device foreign matter detecting method according to claim 2, it is characterised in that multiple detection particles are mutual
The adjacent oled layer for being arranged at OLED display device deviates from the side of substrate, specifically includes：
Using ink printed mode, screen printing mode or organic layer coats mode, by multiple detections, particle is adjacent to each other is arranged at
The oled layer of OLED display device deviates from the side of substrate.
4. OLED display device foreign matter detecting method according to claim 2, it is characterised in that multiple detection particles are mutual
The adjacent oled layer for being arranged at OLED display device deviates from the side of substrate, specifically includes：
There is the detection particle of at least two different-diameters oled layer back of the body adjacent to each other for being arranged at OLED display device by multiple
From the side of substrate；Or,
By multiple detection particle oled layers adjacent to each other for being arranged at OLED display device with same diameter away from substrate
Side.
5. OLED display device foreign matter detecting method according to claim 4, it is characterised in that multiple detection particles are mutual
The adjacent oled layer for being arranged at OLED display device deviates from the side of substrate, specifically includes：
Multiple diameters are more than 1 μm of detection particle oled layer adjacent to each other for being arranged at OLED display device and deviate from the one of substrate
Side.
6. the OLED display device foreign matter detecting method according to claim any one of 1-5, it is characterised in that aobvious in OLED
Show that the oled layer of device forms foreign bodies detection layer away from the side of substrate, specifically include：
The surface for deviating from the oled layer side in any one layer packaging film of the oled layer away from the side of substrate forms described
Foreign bodies detection layer.
7. OLED display device foreign matter detecting method according to claim 6, it is characterised in that it is determined that the oled layer
It is upper to be not present after foreign matter, in addition to：
Remove the foreign bodies detection layer.
8. the OLED display device foreign matter detecting method according to claim any one of 1-5, it is characterised in that aobvious in OLED
Show that the oled layer of device forms foreign bodies detection layer away from the side of substrate, specifically include：
The formation encapsulation for deviating from the oled layer side in any one layer packaging film of the oled layer away from the side of substrate is described
The foreign bodies detection layer of oled layer.
9. OLED display device foreign matter detecting method according to claim 8, it is characterised in that to foreign bodies detection layer
Apply detection pressure, specifically include：
Layer protecting film is attached away from the side of the oled layer in foreign bodies detection layer, to apply to foreign bodies detection layer
Detect pressure.
10. OLED display device foreign matter detecting method according to claim 8, it is characterised in that it is determined that the OLED
It is not present on layer after foreign matter, in addition to：
Fixation treatment is carried out at least one of developer reactant, so that at least two reactions in the developer
Thing does not produce chromogenic reaction after contact.
11. OLED display device foreign matter detecting method according to claim 10, it is characterised in that every kind of reactant is in institute
It is transparence before stating fixation treatment and after the fixation treatment；Or,
At least one reactant is nontransparent shape before the fixation treatment, and is transparence after the fixation treatment.
12. a kind of OLED display device, it is characterised in that the OLED display device uses such as claim in preparation process
OLED display device foreign matter detecting method described in any one of 1-11 carries out foreign bodies detection.
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