CN105185806B - Display panel and its packaging method comprising potting colored indicator - Google Patents
Display panel and its packaging method comprising potting colored indicator Download PDFInfo
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- CN105185806B CN105185806B CN201410280117.XA CN201410280117A CN105185806B CN 105185806 B CN105185806 B CN 105185806B CN 201410280117 A CN201410280117 A CN 201410280117A CN 105185806 B CN105185806 B CN 105185806B
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- 238000004382 potting Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000001301 oxygen Substances 0.000 claims abstract description 47
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 47
- 238000005538 encapsulation Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000035945 sensitivity Effects 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 47
- 239000002184 metal Substances 0.000 claims description 41
- 125000000217 alkyl group Chemical group 0.000 claims description 25
- HZVOZRGWRWCICA-UHFFFAOYSA-N methanediyl Chemical compound [CH2] HZVOZRGWRWCICA-UHFFFAOYSA-N 0.000 claims description 19
- 239000002274 desiccant Substances 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 239000003960 organic solvent Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000007641 inkjet printing Methods 0.000 claims description 5
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000002845 discoloration Methods 0.000 abstract description 3
- 238000005401 electroluminescence Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 9
- 239000003292 glue Substances 0.000 description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- -1 alkyl compound Chemical class 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RXKCZMOSKHICFD-UHFFFAOYSA-N C(=C)(C)[Cu] Chemical compound C(=C)(C)[Cu] RXKCZMOSKHICFD-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- KJJBSBKRXUVBMX-UHFFFAOYSA-N magnesium;butane Chemical compound [Mg+2].CCC[CH2-].CCC[CH2-] KJJBSBKRXUVBMX-UHFFFAOYSA-N 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- ICQPEHCTWFXECV-UHFFFAOYSA-N C(=C)(C)[Pt] Chemical compound C(=C)(C)[Pt] ICQPEHCTWFXECV-UHFFFAOYSA-N 0.000 description 1
- HENZBGFJEFASDQ-UHFFFAOYSA-N C=C(C)[Ti] Chemical compound C=C(C)[Ti] HENZBGFJEFASDQ-UHFFFAOYSA-N 0.000 description 1
- RINWPVIHIGLXLQ-UHFFFAOYSA-N CC([Mg])=C Chemical compound CC([Mg])=C RINWPVIHIGLXLQ-UHFFFAOYSA-N 0.000 description 1
- ARFFVBSCMOSGPO-UHFFFAOYSA-N CC([Zn])=C Chemical compound CC([Zn])=C ARFFVBSCMOSGPO-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 150000001723 carbon free-radicals Chemical class 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SZRLKIKBPASKQH-UHFFFAOYSA-M dibutyldithiocarbamate Chemical compound CCCCN(C([S-])=S)CCCC SZRLKIKBPASKQH-UHFFFAOYSA-M 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000012048 reactive intermediate Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8722—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
- 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
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention provides a kind of display panel comprising potting colored indicator, includes：Substrate；Display device is set on the substrate；Encapsulation cover plate, the encapsulation cover plate are connect by sealing connection mechanism with the edge seal of the substrate, and sealing area is thereby formed；And one or more potting colored indicators on the substrate are set to, wherein one or more potting colored indicators and the display device are located among the sealing area.The present invention also provides the packaging methods of above-mentioned display panel.Water/the oxygen sensitivity for the potting colored indicator that the present invention uses is high, it can effectively reduce water/oxygen content into device, and color change can occur after absorbing water/oxygen, to whether well play discoloration indicative function to device packaging effect, be conducive to the variation for monitoring potting in time.
Description
Technical field
The present invention relates to the encapsulation field of display device, more particularly to a kind of comprising potting colored indicator
Display panel and its packaging method.
Background technique
In recent years, display of organic electroluminescence gradually realizes volume production, and because of its performance brilliance, big substituted traditional liquid crystal is aobvious
Show device and becomes the trend of main flow display.However, compared with liquid crystal display, in display of organic electroluminescence luminescent layer
Organic material is more sensitive to moisture and oxygen, and it is bad that moisture and/or oxygen will cause display of organic electroluminescence luminescent properties
Change, reliability reduces, the lost of life.Therefore, in the manufacturing process of display of organic electroluminescence, encapsulation is especially sealed
The requirement for filling leakproofness, will be significantly larger than liquid crystal display.
For the display of organic electroluminescence after encapsulation, there are two types of come for moisture and oxygen in sealing space
Source, first is that encapsulation process is come from, second is that transmission/infiltration after encapsulation.In current manufacturing process, generally take
It is packaged under the conditions of nitrogen protection, to avoid occurring in encapsulation process moisture and oxygen, and usually using being set to cap
The desiccant layer of plate, to absorb transmission or penetrate into the moisture and oxygen in package cavity.
For the moisture and oxygen for transmitting/penetrating into after encapsulation inside packaging, CN102956675A discloses one
Kind to absorb remaining and/or penetrates into the side of the moisture and oxygen in package cavity in encapsulation cover plate inner surface arrangement desiccant layer
Method.Desiccant used in this method is alkaline earth oxide such as calcium oxide or barium monoxide.However, this desiccant can pass through
Chemically and physically effect absorbs moisture, but is only capable of through physical action adsorption of oxygen.Therefore, deaerating effect can not show a candle to water removal effect
Fruit, and only with desiccation and can not Direct Test and instruction encapsulation leakproofness variation.
It is close that encapsulation is not carried out after organic electroluminescence device encapsulation is completed to leave sealed in unit in the current prior art
The inspection of envelope property, especially not to the directly monitoring of potting variation.Therefore, it is still necessary to by a kind of water/oxygen absorption
Can it is excellent and can occur after absorbing water/oxygen visible change potting indicator introduce organic electroluminescent show
Show device, to monitor the leakproofness of encapsulation in device manufacturing processes.Thus visible change, indicating device can occur in the indicator
Leakproofness it is undesirable or deterioration in the case where, stop subsequent technique, to save production cost, or for the factory of product
It examines, determines whether product is qualified, its service life can be also used to indicate in product use process.
Summary of the invention
To solve the above problems, the present invention is proposed to introduce in display of organic electroluminescence sensitive to water/oxygen and be inhaled
The potting colored indicator that color change occurs after receipts water/oxygen, is achieved in the monitoring of device potting variation
And instruction.
Therefore, on the one hand, the present invention provides a kind of display panel comprising potting colored indicator, includes：Base
Plate；Display device is set on the substrate；Encapsulation cover plate, the encapsulation cover plate pass through sealing connection mechanism and the base
The edge seal of plate connects, and thereby forms sealing area；And it is set to one or more pottings on the substrate
Property colored indicator, wherein one or more potting colored indicators and the display device are located at the sealing
Among region.
In one embodiment of the invention, one or more potting colored indicators are that water oxygen is sensitive
Colored indicator.
In another embodiment of the invention, the water oxygen sensitivity colored indicator be metal alkyl complex and/
Or metal carbene complex.
In another embodiment of the invention, the metallic element in the metal alkyl complex is selected from：Lithium, magnesium,
Zinc, copper, aluminium and titanium.
In another embodiment of the invention, the alkyl in the metal alkyl complex be carbon atom number be 1~
20 saturation or unsaturated alkyl.
In another embodiment of the invention, metallic element in the metal carbene complex be selected from lithium, magnesium,
Zinc, copper, aluminium, titanium, platinum and palladium.
In another embodiment of the invention, the display panel further includes being set among the sealing area
Desiccant, the desiccant are attached on the encapsulation cover plate.
On the other hand, the present invention also provides the packaging methods of above-mentioned display panel, including carry out under an inert atmosphere following
Step：
(1) display device is set on substrate；
(2) one or more potting colored indicators are applied to the substrate；And
(3) encapsulation cover plate is set, connects the edge seal of the encapsulation cover plate and the substrate by sealing connection mechanism
It connects, thereby makes the substrate, the sealing connection mechanism and the encapsulation cover plate three that sealing area be collectively formed, wherein described
Display device and one or more potting colored indicators are located among the sealing area.
In a kind of embodiment of the method for the present invention, the step (2) includes：Potting colored indicator is molten
Organic solution is formed in organic solvent；The organic solution is applied to the substrate；Heat drying removes the organic solvent,
It is formed by curing the potting colored indicator on the substrate.
In the another embodiment of the method for the present invention, one or more potting colored indicators are water
Oxygen sensitivity colored indicator.
In the another embodiment of the method for the present invention, it is described be water oxygen sensitivity colored indicator be metal alkyl cooperation
Object and/or metal carbene complex.
In the another embodiment of the method for the present invention, the metallic element in the metal alkyl complex is selected from：Lithium,
Magnesium, zinc, copper, aluminium and titanium.
In the another embodiment of the method for the present invention, the alkyl in the metal alkyl complex is that carbon atom number is
1~20 saturation or unsaturated alkyl.
In the another embodiment of the method for the present invention, metallic element in the metal carbene complex be selected from lithium,
Magnesium, zinc, copper, aluminium, titanium, platinum and palladium.
In the another embodiment of the method for the present invention, the organic solution is applied to the base by inkjet printing
Plate.
In the another embodiment of the method for the present invention, the heat drying carries out 2~10 minutes at 35~60 DEG C.
In the another embodiment of the method for the present invention, the potting colored indicator is applied to the sealing
Near bindiny mechanism.
In the another embodiment of the method for the present invention, the step (3) further includes：The encapsulation cover plate with it is described
Before the edge seal connection of substrate, desiccant is set towards the side of the substrate in the encapsulation cover plate.
Water/the oxygen sensitivity for the potting colored indicator that the present invention uses is much higher than conventional drying agent, Neng Gouyou
Effect reduces water/oxygen content that impermeable seal bindiny mechanism enters device, and color change can occur after absorbing water/oxygen
Change, to whether well play the role of discoloration instruction to device packaging effect, is conducive to the change for monitoring potting in time
Change, and conventional drying agent has no indicative function.For the display panel comprising potting colored indicator of the invention, if
After it is made, the indicator discoloration being set on substrate is observed, i.e. potting is bad, then can be without subsequent
Technique (such as mould group etc.), so that save the cost, in addition also carries out product export matter using the indicative function of display indicator
Inspection, or life of product monitoring is realized in user's use process.
Detailed description of the invention
It referring to following detailed description those skilled in the art is better understood with addressing on of the invention in conjunction with attached drawing many
Other feature and advantage, wherein：
Fig. 1 is the structural schematic diagram of the display panel comprising potting colored indicator of the invention；
Fig. 2 is the perspective view of the display panel comprising potting colored indicator of the invention；
Wherein, the reference numerals are as follows：
1,11 substrate
2,12 display device
3 sealing connection mechanisms
4 packaging back boards
5,15 potting colored indicator
6 sealing areas
Specific embodiment
Below according to specific embodiment, technical scheme is described further.Protection scope of the present invention is unlimited
In following embodiment, these examples are enumerated merely for exemplary purpose without limiting the invention in any way.
As shown in Figure 1, the present invention provides a kind of display panel comprising potting colored indicator, include：Substrate
1, the encapsulation cover plate 4 for being set to the display device 2 on substrate, being connect by sealing connection mechanism 3 with the edge of substrate, and
The potting colored indicator 5 being set on substrate, encapsulation cover plate 4 pass through the edge of sealing connection mechanism 3 and substrate 1
It is tightly connected, thereby forms sealing area 6, potting colored indicator 5 and display device 2 are located among sealing area 6.
Substrate 1 is the glass with good light permeability, so that the light that display device is launched is projected with high-transmission rate.At this
In a kind of preferred embodiment of invention, display device 2 is organic electroluminescence device, the organic luminescent substance pair in the device
Water/oxygen is extremely sensitive, and the water and/or oxygen into device will lead to the luminescent properties deterioration of display panel, reliability reduction, service life
Shorten.Therefore, the present invention using packaging back board 4 before being packaged, on the glass substrate, the week of display device
It encloses, place is connected and sealed especially proximate to subsequent, i.e., near sealing connection mechanism 3, arrange potting colour developing and refer to
Show agent 5.The indicator arranged is water oxygen sensitivity colored indicator, is on the one hand used as water/oxygen sensitive materials, can be inhaled at the first time
Steam and/or oxygen that impermeable seal bindiny mechanism such as uv-curable glue (UV glue) enters device are received, on the other hand as aobvious
After absorbing steam and/or oxygen color change can occur for color indicator.Since the indicator is arranged in transparent glass substrate
On, thus can pass through glass substrate and observe this color change whether occur at any time, so that the variation of potting is monitored,
Visual, apparent indicative function is played to potting effect.
In the preferred embodiment of the present invention, the water oxygen sensitivity shows that indicator is metal alkyl complex,
It has very high reactivity with water/oxygen, is 100~10000 times of inorganic drying agents to water/oxygen susceptibility, is especially suitable for
Water/oxygen of denier that may be present is monitored in 5~20 days after device encapsulation.The metal alkyl compound and water
It reacts and generates hydrocarbon and metal hydroxides, react with oxygen to form metal oxide and gas, react
The chemical structure of metal alkyl compound changes afterwards, and coloring function group changes, so that significant change occurs for color, by colourless transformation
To be white or faint yellow, and then indicative function is played to potting.In the preferred embodiment of the present invention, described
Metal in metal alkyl complex is selected from lithium, magnesium, zinc, copper, aluminium and titanium, alkyl be saturation with 1~20 carbon atom or
Unsaturated alkyl, for example, ethyl/butyl lithium, ethyl/dibutyl magnesium, ethyl/butyl zinc, ethyl/cupric dibutyldithiocarbamate, ethyl/butyl aluminium and
The alkyl complexes such as ethyl/butyl titanium.These metal alkyl complex are well known and commercially available compounds, such as are purchased from
Aldrich (aldrich) and DOW Chemical (Dow).
In another preferred embodiment of the invention, the potting colored indicator is metal carbene complex
Object is similarly the substance with high water/oxygen sensitivity, is particularly suited for after device encapsulation in 5~100 days to that may be present
Water/oxygen of denier is monitored.Shown in the structure of the metal carbene complex such as following formula (1)：
Formula (1)
Wherein M is metal, CR1R2Part is Cabbeen intermediate (Carbene), also known as carbene, is belonged to as carbon radicals
Without the neutral reactive intermediate of positive and negative charge.The metal carbene complex is reacted with water generates metal hydroxides, with oxygen
Solid/liquid/gas reactions generate metal oxide, and the chemical structure of metal carbene complex changes after reaction, and coloring function group changes, thus face
Significant change occurs for color, is changed into white or faint yellow by colourless, and then plays indicative function to potting.In the present invention
A kind of preferred embodiment in, metal M in the metal carbene complex is selected from lithium, magnesium, zinc, copper, aluminium, titanium, platinum and palladium,
R1And R2It is each independently selected from C1-C20Saturation and unsaturation alkyl, the metal carbene complex is, for example, isopropenyl magnesium,
Isopropenyl zinc, isopropenyl copper, isopropenyl aluminium, isopropenyl titanium, isopropenyl platinum etc..These metal carbene complex are
Well known and commercially available compound, such as it is purchased from aldrich (aldrich) and DOW Chemical (Dow).
The above metal alkyl complex and metal carbene complex can be used alone as water/oxygen sensitivity colored indicator
Or it is applied in combination, and can be used in combination with conventional drying agent, while realizing and the drying of packaging and leakproofness are indicated.
It is not shown as shown in Fig. 2, potting colored indicator 15 is set on the quadrangle or four sides of substrate 11
Any position that device 12 occupies, the sealing connection mechanism for being especially set to connecting substrate edge and encapsulation cover plate are for example ultraviolet
Near solidification glue (UV glue), in favor of absorbing water/oxygen through the sealing connection mechanism.Substrate 11 is with high transmittance
Transparent glass substrate, thus be convenient to observe the variation of the colored indicator through substrate, monitor potting
Variation.In addition, the colored indicator only occupies a ten thousandth or hereinafter, overall appearance to panel of entire surface plate suqare
Do not influence.
In the preferred embodiment of the present invention, the display device is organic electroluminescence device.According to this hair
Bright display panel, if color change has occurred for the potting colored indicator for observing that it is included before mould group,
Without subsequent module step, if not observing color change, it can be used for mould group and form display panel assembly, so that it is guaranteed that
The component of formation meets encapsulation and requires.
The present invention also provides the packaging methods of the above-mentioned display panel comprising potting colored indicator, including：
Display device is set on substrate；One or more potting colored indicators are applied to the substrate；And
Encapsulation cover plate is set, connect the encapsulation cover plate and the edge seal of the substrate by sealing connection mechanism, thereby makes base
Sealing area is collectively formed in plate, sealing connection mechanism and encapsulation cover plate three, and wherein display device and one or more encapsulation are close
Envelope property colored indicator is located among sealing area.A variety of coating methods can be used by the potting colored indicator shape
At on transparent substrate, wherein in the preferred embodiment of the present invention, be dissolved in the colored indicator has first
Solvent forms organic solution, the organic solution is then applied to the substrate by inkjet printing, then heat drying
The organic solvent is removed, is formed by curing the colored indicator on the substrate.According to the method for the present invention, described
Organic solvent may be selected to be less than or equal to 60 at inertia and boiling point to above-mentioned metal alkyl complex and metal carbene complex
DEG C any solvent, preferably at inertia and solvent, such as tetrahydrofuran (THF), ether etc. that boiling point is 35~60 DEG C.It will be described
Potting colored indicator is dissolved in organic solvent and forms organic solution, excellent after being applied to substrate by inkjet printing
Heat drying 2~10 minutes at 35~60 DEG C are selected in, above-mentioned organic solvent is made to volatilize, colored indicator solidifies on substrate.
Unless otherwise defined, term used herein is the normally understood meaning of those skilled in the art.
The present invention is described in further detail by the following examples.
Embodiment 1
Preferred dimension is the glass substrate of 200mmX200mm, under nitrogen atmosphere protection, using routine techniques shape on it
At organic electroluminescence device, and following processing steps are carried out before being packaged using encapsulation cover plate：
It selects dibutyl magnesium (being purchased from DOW) to be used as metal alkyl complex, is dissolved in organic solvent THF, forms concentration
For 0.1~10% organic solution, then the organic solution is sprayed to the bottom right of glass substrate using inkjet-printing device
Angle, it is 2~15 minutes dry at a temperature of 40~70 DEG C.Hereafter, make encapsulation cover plate and glass substrate using uv-curable glue
Edge seal connection, is made the display panel comprising potting colored indicator of the invention.
Water vapor seal simulation test is packaged to display panel made of the present embodiment, penetrates uv-curable glue to aobvious
Show and injects steam in panel, after injecting the steam of 1~1000ppm, the face of above-mentioned potting colored indicator test point
Color by it is colourless be changed into it is faint yellow.
Oxygen seal simulation test is packaged to display panel made of the present embodiment, penetrates uv-curable glue to aobvious
Show and injects steam in panel, after injecting the oxygen of 1~1000ppm, the face of above-mentioned potting colored indicator test point
Color by it is colourless be changed into it is faint yellow.
Embodiment 2
Display panel according to made of the present embodiment comprising potting colored indicator is similar to Example 1, no
It is with place, selects isopropenyl copper (being purchased from DOW) to be used as metal carbene complex, be dissolved in THF, forming concentration is
0.1~10% organic solution, it is 2~15 minutes dry at a temperature of 40~70 DEG C after spraying, on the glass substrate finally
Form potting colored indicator test point.
Water vapor seal simulation test is packaged to display panel made of the present embodiment, penetrates uv-curable glue to aobvious
Show and injects steam in panel, after injecting the steam of 1~1000ppm, the face of above-mentioned potting colored indicator test point
Color by it is colourless be changed into it is faint yellow.
Oxygen seal simulation test is packaged to display panel made of the present embodiment, penetrates uv-curable glue to aobvious
Show and injects steam in panel, after injecting the oxygen of 1~1000ppm, the face of above-mentioned potting colored indicator test point
Color by it is colourless be changed into it is faint yellow.
It can be seen that display panel according to the present invention, shows indicator by introducing water/oxygen sensitivity on substrate,
The variation of the colored indicator can intuitively be observed and susceptibility is high, so as in time, effectively monitoring devices potting
Property variation, to determine whether to carry out subsequent process steps, save the cost, or be achieved in product export quality inspection and life of product
Monitoring.
Those skilled in the art should be noted that embodiment described in the invention is only exemplary, can be
Various other replacements, changes and improvements are made in the scope of the present invention.Thus, the present invention is not limited to the above embodiments, and only
It is defined by the claims.
Claims (10)
1. a kind of display panel comprising potting colored indicator, which is characterized in that the display panel includes：
Substrate；
Display device is set on the substrate；
Encapsulation cover plate, the encapsulation cover plate are connect with the edge seal of the substrate by sealing connection mechanism, are thereby formed close
Seal region；And
The one or more potting colored indicators being set on the substrate, wherein one or more encapsulation
Leakproofness colored indicator and the display device are located among the sealing area, and one or more pottings are aobvious
Color indicator is water oxygen sensitivity colored indicator, and the water oxygen sensitivity colored indicator is metal alkyl complex and/or metal
Arbine complex, the metallic element in the metal alkyl complex and/or metal carbene complex are selected from lithium, magnesium and aluminium.
2. display panel according to claim 1, wherein it is 1~20 that the alkyl in the metal alkyl complex, which is carbon atom number,
Saturation or unsaturated alkyl.
3. display panel according to claim 1 further includes the desiccant being set among the sealing area, the desiccant
It is attached on the encapsulation cover plate.
4. it is a kind of according to claim 1 to any one of 3 display panel packaging method, including carry out under an inert atmosphere with
Lower step：
(1) display device is set on substrate；
(2) one or more potting colored indicators are applied to the substrate；And
(3) encapsulation cover plate is set, connect the encapsulation cover plate and the edge seal of the substrate by sealing connection mechanism, by
This makes the substrate, the sealing connection mechanism and the encapsulation cover plate three that sealing area be collectively formed, wherein the display
Device and one or more potting colored indicators are located among the sealing area, one or more envelopes
Dress leakproofness colored indicator is water oxygen sensitivity colored indicator, and the water oxygen sensitivity colored indicator is metal alkyl complex
And/or metal carbene complex, the metallic element in the metal alkyl complex and/or metal carbene complex be selected from lithium,
Magnesium and aluminium.
5. packaging method according to claim 4, wherein the step (2) includes：By the potting colored indicator
It is dissolved in organic solvent and forms organic solution；The organic solution is applied to the substrate；Heat drying removes described organic molten
Agent is formed by curing the potting colored indicator on the substrate.
6. packaging method according to claim 4, wherein it is 1~20 that the alkyl in the metal alkyl complex, which is carbon atom number,
Saturation or unsaturated alkyl.
7. packaging method according to claim 5, wherein the organic solution is applied to the substrate by inkjet printing.
8. packaging method according to claim 7, wherein the heat drying carries out 2~10 minutes at 35~60 DEG C.
9. packaging method according to claim 4, wherein one or more potting colored indicators are applied to institute
It states near sealing connection mechanism.
10. packaging method according to claim 4, wherein the step (3) further includes：Connected in the encapsulation cover plate by sealing
Before connection mechanism is connect with the edge seal of the substrate, drying is set towards the side of the substrate in the encapsulation cover plate
Agent.
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| CN107331799B (en) * | 2017-08-11 | 2018-10-19 | 京东方科技集团股份有限公司 | OLED display panel, motherboard and the method tested its cutting region and it is cut |
| CN107742635B (en) * | 2017-09-27 | 2020-07-03 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof |
| CN109037085A (en) * | 2018-08-01 | 2018-12-18 | 苏州福莱威封装技术有限公司 | Packaging method and encapsulating structure |
| CN110473982B (en) * | 2019-07-30 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | OLED display panel packaging structure and preparation method thereof |
| CN113644214A (en) * | 2020-04-27 | 2021-11-12 | Oppo广东移动通信有限公司 | Display screen, preparation method thereof and electronic equipment |
| CN111668385B (en) * | 2020-06-15 | 2022-11-04 | Tcl华星光电技术有限公司 | Display panel and packaging method thereof |
| CN113437200B (en) * | 2021-06-23 | 2022-10-11 | 上海纬而视科技股份有限公司 | COB packaging structure with sealed display block |
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| CN101087863A (en) * | 2004-12-23 | 2007-12-12 | 西巴特殊化学品控股有限公司 | Electroluminescent metal complexes with nucleophilic carbene ligands |
| CN103730071A (en) * | 2013-12-30 | 2014-04-16 | 深圳市华星光电技术有限公司 | OLED panel, manufacturing method thereof and encapsulation effect detection method |
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| IT1313584B1 (en) * | 1999-07-30 | 2002-09-09 | Levosil S P A | HUMIDITY INDICATORS TO INDICATE THE ABSORBING CAPACITY OF A DEHYDRATING MATERIAL. |
| US7256542B2 (en) * | 2004-02-20 | 2007-08-14 | Au Optronics Corporation | Method and device for detecting moisture in electroluminescence display devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087863A (en) * | 2004-12-23 | 2007-12-12 | 西巴特殊化学品控股有限公司 | Electroluminescent metal complexes with nucleophilic carbene ligands |
| CN103730071A (en) * | 2013-12-30 | 2014-04-16 | 深圳市华星光电技术有限公司 | OLED panel, manufacturing method thereof and encapsulation effect detection method |
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