CN106972112A - Light emitting device - Google Patents
Light emitting device Download PDFInfo
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- CN106972112A CN106972112A CN201710096110.6A CN201710096110A CN106972112A CN 106972112 A CN106972112 A CN 106972112A CN 201710096110 A CN201710096110 A CN 201710096110A CN 106972112 A CN106972112 A CN 106972112A
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- light
- layer
- illuminating element
- emitting device
- organic illuminating
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- 230000003287 optical effect Effects 0.000 claims abstract description 64
- 238000001228 spectrum Methods 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims description 167
- 239000011241 protective layer Substances 0.000 claims description 39
- 238000002834 transmittance Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 19
- 230000004087 circulation Effects 0.000 description 18
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000002633 protecting effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- -1 polyethylene Terephthalate Polymers 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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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
-
- 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
- H10K50/85—Arrangements for extracting light from the devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/302—Details of OLEDs of OLED structures
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- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a light-emitting device which comprises an organic light-emitting element and an optical layer group. The organic light emitting element has a light emitting surface. The optical layer group is provided with a first surface and a second surface which are opposite. The first surface is closer to the light emitting element than the second surface. The optical layer group comprises a polarizing layer and a filter layer. The polarizing layer is arranged on the luminous surface of the luminous element. The filter layer is arranged on the light emitting surface of the light emitting element. When the light passes through the optical layer group from the second surface and becomes a first light through the first surface, the first light has a first spectrum, and when the light passes through the optical layer group from the first surface and becomes a second light through the second surface, the second light has a second spectrum. The first spectrum is distinct from the second spectrum. The first spectrum has a transmittance of 2% or less at a wavelength of 380nm or less.
Description
Technical field
The present invention is on a kind of light-emitting device, in particular to a kind of luminous dress lighted with organic illuminating element
Put.
Background technology
There is cathode-ray tube display from the industrial revolution, people can receive by sending signal for each display, with
The rating user of display is made to obtain the various information related to this signal.However, cathode-ray tube has, volume is excessive, consume
Electricity is excessive and radiates the shortcomings of line dosage is too high.Therefore, there are various displays constantly to developed in recent years, asked with Ji
Volume-diminished, power saving and low radiation dose.Moreover, in addition to wishing enough to overcome the shortcoming of above-mentioned cathode-ray tube, also wishing
Hope can retain cathode-ray tube such as the advantages of bright in luster and wide viewing angle.
In various displays, development has liquid crystal display, plasma display panel and is used as display by organic illuminating element
The display of means.There is organic illuminating element bright in luster, with distinct contrast, high reaction rate, picture not to beat, wide viewing angle,
Volume is frivolous, power consumption is low and the low advantage of dose of radiation.However, organic illuminating element irradiates in by other high-energy rays
Afterwards, the organic molecule in organic illuminating element may be broken, and might have the rise of startup voltage and the low feelings of luminous quantity change
Shape occurs.
The content of the invention
The problem of in view of the above, the present invention proposes a kind of light-emitting device, and organic illuminating element is irradiated in by limitation
Light is to promote its life-span.
One embodiment of the invention proposes a kind of light-emitting device, includes organic illuminating element and optical layer group.Organic light emission
Element has light-emitting area.Optical layer group has relative first surface and second surface.First surface is compared with the close hair of second surface
Optical element.Optical layer group includes polarizing layer and filter layer.Polarizing layer is arranged in the light-emitting area of light-emitting component.Filter layer is arranged at
In the light-emitting area of light-emitting component.The first light is turned into by first surface when light passes through optical layer group from second surface, the
One light has the first spectrum, and the second light is turned into by second surface when light passes through optical layer group from first surface, the
Two light have the second spectrum.First spectrum is different from the second spectrum.First spectrum is in the penetrance that wavelength value is below 380nm
Less than or equal to 2%.
Light-emitting device according to an embodiment of the invention, can be by the configuration of optical layer group so that light is from the second table
Face is through optical layer group during by first surface, and wavelength value is only capable of printing opacity less than or equal to 2% for below 380nm light,
And be unlikely to damage organic illuminating element, and the light that organic illuminating element is sent passes through optical layer from second surface
Group and during by first surface, then light will not too much be influenceed by optical layer group, and be able to maintain that organic illuminating element institute
The performance of the light sent.
More than on the explanation of present invention and the explanation of following embodiment demonstrated with explaining this hair
Bright spirit and principle, and claims of the present invention is provided further explained.
Brief description of the drawings
Figure 1A illustrates the perspective exploded view of the light-emitting device according to one embodiment of the invention；
The wavelength peak for the blue light that the organic illuminating element that Figure 1B illustrates Figure 1A is sent subtracts the wavelength halfwidth of blue light
Wavelength value schematic diagram；
Fig. 2A is illustrated in Figure 1A optical layer group, when light from second surface through optical layer group and by first surface into
During for the first light, the schematic diagram for the first spectrum that the first light has；
Fig. 2 B are illustrated in Figure 1A optical layer group, when light from first surface through optical layer group and by second surface into
During for the second light, the schematic diagram for the second spectrum that the second light has；
Fig. 3 A illustrate red light-emitting intensity of the test chart 1A in the organic illuminating element under dissimilar structure relative to circulation time
The schematic diagram of several relations；
Fig. 3 B illustrate green luminescence intensity of the test chart 1A in the organic illuminating element under dissimilar structure relative to circulation time
The schematic diagram of several relations；
Fig. 3 C illustrate blue light emitting intensity of the test chart 1A in the organic illuminating element under dissimilar structure relative to circulation time
The schematic diagram of several relations；
Fig. 4 A illustrate cross-pressures of the test chart 1A in the feux rouges organic illuminating element under dissimilar structure relative to cycle-index
The schematic diagram of relation；
Fig. 4 B illustrate cross-pressures of the test chart 1A in the green glow organic illuminating element under dissimilar structure relative to cycle-index
The schematic diagram of relation；
Fig. 4 C illustrate cross-pressures of the test chart 1A in the blue light organic emissive element under dissimilar structure relative to cycle-index
The schematic diagram of relation；
Fig. 5 A illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention；
Fig. 5 B illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention；
Fig. 5 C illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention；
Fig. 5 D illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention；
Fig. 5 E illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention；
Fig. 5 F illustrate the diagrammatic cross-section of the light-emitting device according to another embodiment of the present invention.
Reference
1st, 2,3,4,5,6,7,8,9,10,11 light-emitting device
110 organic illuminating elements
110a light-emitting areas
120 optical layer groups
120a first surfaces
120b second surfaces
121 polarizing layers
122 filter layers
130 lids
131 first protective layers
132 second protective layers
L0, L1, L2 light
The quick shaft directions of N1 first
The slow-axis directions of N2 first
The quick shaft directions of N3 second
The slow-axis directions of N4 second
Embodiment
Describe the detailed features and advantage of embodiments of the invention in detail in embodiments below, its content is enough to make
Any those skilled in the art understand the technology contents of embodiments of the invention and implemented according to this, and are taken off according to this specification
Content, claims and the schema of dew, any those skilled in the art can be readily understood upon correlation of the invention purpose and
Advantage.Following embodiment is the viewpoint that the present invention is further described, but non-anyways to limit scope of the invention.
Described in specification " on ", it is represented by being suspended in top, is also denoted as being contacted with upper surface.
It refer to Figure 1A and Figure 1B, Figure 1A illustrate the stereo decomposing of the light-emitting device 1 according to one embodiment of the invention and shown
It is intended to, schematic diagram of the luminous intensity relative to wavelength for the blue light that the organic illuminating element 110 that Figure 1B illustrates Figure 1A is sent.Hair
Electro-optical device 1 includes organic illuminating element 110 and optical layer group 120.Organic illuminating element 110 has light-emitting area 110a.Optical layer
Group 120 has relative first surface 120a and second surface 120b.First surface 120a is compared with second surface 120b close to organic
Light-emitting component 110.
Optical layer group 120 includes polarizing layer 121 and filter layer 122.Polarizing layer 121 is arranged at the luminous of light-emitting component 110
On the 110a of face.Polarizing layer 121 can include phase delay layer, the wherein phase to postpone passed through light, phase delay layer
It can be quarter-wave plate.Polarizing layer 121 has the first quick shaft direction N1 and the first slow-axis direction N2 different each other.First is fast
Direction of principal axis N1 and the first slow-axis direction N2 angle can be 90 °.
Filter layer 122 is arranged on the light-emitting area 110a of organic illuminating element 110.Filter layer 122 can be located at organic light emission
Between element 110 and polarizing layer 121.The material of filter layer 122 can be PET (polyethylene
Terephthalate, PET).Filter layer 122 can have the second quick shaft direction N3 and the second slow-axis direction N4 different each other, the
Two quick shaft direction N3 and the second slow-axis direction N4 angle can be 90 °.Refractive index of the filter layer 122 along the second quick shaft direction N3 and
Refractive index along the second slow-axis direction N4 is different.First quick shaft direction N1 of polarizing layer 121 and the second fast axle side of filter layer 122
3 ° are about to N3 angle.For example, when the first quick shaft direction N1 of polarizing layer 121 angle is 0 ° or 180 °, filter
Second quick shaft direction N3 of layer 122 angle is about 177 °.
In make filter layer 122 when, can by way of stretching the material of filter layer 122 and being attached at other elements, with
Filter layer 122 is completed, wherein the direction of stretching filter layer 122 can be the second quick shaft direction N3, the other elements attached can be
Polarizing layer 121.But it is not limited., also can be by the way that the material of the filter layer of liquid be coated on into it when filter layer 122 is made
His element and the mode solidified, to complete filter layer 122, wherein the direction of coating filter layer 122 also can be the second fast axle
Direction N3, the other elements being applied also can be polarizing layer 121.Furthermore it is also possible to orientation mode along the second quick shaft direction N3 and
Second slow-axis direction N4 formation filter layers 122.Wherein, this orientation mode can be the ion doping that will have light-filtering characteristic in PET
In (polyethylene terephthalate) plastic film, and make it equal with the second quick shaft direction N3 or the second slow-axis direction N4
Even arrangement.
In the present embodiment, it is seen that the wave-length coverage of light can be 380nm~780nm, and filter layer 122 is for the total of visible ray
Penetrance can be more than 90%, or can be more than 90% for the average penetration rate of visible ray.Filter layer 122 is for wavelength value
Penetrance for below 420nm light is smaller than 15%.The total penetrance of filter layer 122 and polarizing layer 121 for visible ray
Can be more than 43%.The summation of the thickness of filter layer 122 and the thickness of polarizing layer 121 may be less than or equal to 180 microns.
Moreover, as shown in Figure 1B, the blue light that the curve in figure is sent by Figure 1A organic illuminating element 110 it is luminous strong
Spend the schematic diagram relative to wavelength.In the present embodiment, the wave-length coverage for the blue light that organic illuminating element 110 is sent can be
420nm to 480nm.The most intensity of this blue light is represented by H, and wavelength is represented by the wavelength value corresponding to this most intensity
Peak L, this blue light is represented by H/2 in half high intensity of most intensity, and this blue light corresponds to wavelength value during half high intensity H/2
Width be represented by wavelength halfwidth W, the wavelength peak L for this blue light that organic illuminating element 110 is sent subtracts this blue light
Wavelength halfwidth W be represented by wavelength value L-W.Filter layer 122 can be small for the penetrance of below wavelength value L-W light
In 2%.
It refer to Fig. 2A and Fig. 2 B.Fig. 2A is illustrated in Figure 1A optical layer group 120, when light L0 is worn from second surface 120b
When crossing optical layer group 120 and turning into the first light L1 by first surface 120a, the first spectrum lambda 1 that the first light L1 has
Schematic diagram.Fig. 2 B are illustrated in Figure 1A optical layer group 120, when light L0 passes through from first surface 120a through optical layer group
When second surface 120b turns into the second light L2, the schematic diagram for the second spectrum lambda 2 that the second light L2 has.
When light to be obtained passes through the spectrum of optical layer group 120, optical layer group 120 can be arranged on lid 130, and
First surface 120a is towards lid 130, and second surface 120b is back to lid 130.Filter layer 122 can be located at lid 130 and polarisation
Between layer 121.Lid 130 can be glass.As shown in Figure 2 A, test light L0 is made to pass through optical layer group from second surface 120b
120 and by first surface 120a turn into the first light L1, and in lid 130 receive the first light L1 and obtain the first spectrum lambda
1.As shown in Figure 2 B, make test light L0 from lid 130 through first surface 120a and through optical layer group 120 by the
Two surface 120b turn into the second light L2, and receive the second light in second surface 120b and obtain the second spectrum lambda 2.Complex chart
2A and Fig. 2 B understand that the first spectrum lambda 1 is different from the second spectrum lambda 2.Second spectrum lambda 2 is in the penetrance that wavelength value is below 380nm
2% can be more than.
From the first spectrum shown in Fig. 2A, shown in the part enclosed dashed lines, the first light is about in wavelength
Below 380nm penetrance is closely zero, represents the light that wavelength is about below 380nm, such as UV (ultraviolet)
Light, hardly penetrates optical layer group 120 and by first surface 120a from second surface 120b.In detail, the first spectrum lambda 1
In wavelength value 2% is may be less than or equal to for below 380nm penetrance.Therefore, when as shown in Figure 1A by organic illuminating element 110
When being arranged at first surface 120a, then the light that can significantly avoid organic illuminating element 110 from being about below 380nm by wavelength shines
Penetrate, and the organic molecule in organic illuminating element 110 therefore the situation being broken can be avoided, and then lift organic light emission member
The life-span of part 110.
From the second spectrum shown in Fig. 2 B, shown in the part enclosed dashed lines, the second light is about in wavelength
Below 380nm can still have a little penetrance, and the light that expression wavelength is about below 380nm is still a little can be from first surface
120a penetrates optical layer group 120 and by second surface 120b.In detail, the second spectrum lambda 2 in wavelength value for below 380nm
Penetrance can be more than 2%.Therefore, when organic illuminating element 110 is arranged at into first surface 120a as shown in Figure 1A, You Jifa
The light that wavelength in the light that optical element 110 is sent is about below 380nm, can also supply hair by optical layer group 120
User's viewing of electro-optical device 1, therefore, it is possible to maintain the color representation that light-emitting device 1 is presented.
It will be described below Figure 1A protecting effect of the optical layer group 120 for organic illuminating element 110.
Test condition herein, is to be stored in light-emitting device when not operating to shine upon in analog meter, and according to
The surface solar radiation simulation specification of IEC 60068-2-5, Sa experiments is tested.Wherein, the highest temperature is about 40 degrees Celsius, most
Low temperature is about 25 degrees Celsius, and illumination is about 1120W/m2.In circulating each time, continue eight hours under irradiating state, it is dark
16 hours are maintained under state.The power supply of same current is turned on to organic illuminating element 110 when test point is taken every time, to survey
Try its luminous intensity.
It refer to Fig. 3 A, Fig. 3 B and Fig. 3 C.Fig. 3 A are illustrated in the red light-emitting of the organic illuminating element 110 under dissimilar structure
Schematic diagram of the intensity relative to the relation of cycle-index.Fig. 3 B are illustrated in the green glow of the organic illuminating element 110 under dissimilar structure
Schematic diagram of the luminous intensity relative to the relation of cycle-index.Fig. 3 C are illustrated in the organic illuminating element 110 under dissimilar structure
Schematic diagram of the blue light emitting intensity relative to the relation of cycle-index.Test point in figure using triangular marker (▲) is is provided with
Optical layer group 120 protects the situation of organic illuminating element 110, and this structure is first structure, such as Figure 1A light-emitting device 1.In figure
With the test point of diamond indicia (◆) only to set polarizing layer 121 to protect the situation of organic illuminating element 110, this structure is second
Structure.The test point of (●) is marked to be to be not provided with the situation that other elements protect organic illuminating element 110 with circle in figure, this knot
Structure is the 3rd structure.Real thick line is referential data, represents that Figure 1A light-emitting device 1 does not carry out surface solar radiation simulation survey completely
Situation during examination.
As shown in Figure 3A, after six times circulate, it is not provided with the 3rd structure that other elements protect organic illuminating element 110
In, the red light-emitting intensity of organic illuminating element 110 is just down to less than 70%.Polarizing layer 121 is only set to protect organic light emission member
In second structure of part 110, the red light-emitting intensity of organic illuminating element 110 is just down to less than 95%.Optical layer group 120 is set
In the first structure for protecting organic illuminating element 110, the red light-emitting intensity of organic illuminating element 110 can maintain 95% with
On.After Yu Shici circulations, the red light-emitting intensity of the organic illuminating element 110 of the second structure is just down to less than 90%, the first knot
The red light-emitting intensity of the organic illuminating element 110 of structure can maintain more than 90%.Wherein, the organic illuminating element of first structure
The red light-emitting intensity of the organic illuminating element 110 of 110 structure of red light-emitting strength ratio second is higher by about 7.3%.
As shown in Figure 3 B, in the 3rd structure for being not provided with other elements protection organic illuminating element 110, organic illuminating element
110 after excessively secondary cycle its green luminescence intensity be just down to less than 93%.Polarizing layer 121 is only set to protect organic light emission member
In second structure of part 110 and in the first structure of the protection organic illuminating element 110 of setting optical layer group 120, organic light emission
Green luminescence intensity during element 110 is circulated in ten times can maintain more than 98%.Second structure and first structure are tested in this
In its organic illuminating element 110 the nearly no phenomenon for having a decline of green luminescence intensity.
As shown in Figure 3 C, in the 3rd structure for being not provided with other elements protection organic illuminating element 110, organic illuminating element
110 after excessively secondary cycle its blue light emitting intensity be just down to less than 63%, and the organic illuminating element 110 of first structure
Blue light emitting intensity is nearly no the phenomenon of decline.Polarizing layer 121 is only set to protect the second structure of organic illuminating element 110
In, its blue light emitting intensity after secondary cycle of organic illuminating element 110 is just down to less than 88%, by six times circulate after its
Blue light emitting intensity is just down to less than 82%, and its blue light emitting intensity is just down to less than 75% after eight times circulate, and follows for ten times
Blue light emitting intensity after ring is about 70~75%.Optical layer group 120 is set to protect the first structure of organic illuminating element 110
In, organic illuminating element 110 can maintain more than 95% by the blue light emitting intensity before four circulations, after four times circulate
Its blue light emitting intensity is only down to 95% or so, and its blue light emitting intensity is just down to less than 90%, ten times after seven times circulate
Blue light emitting intensity after circulation still possesses about 80~85%.Therefore, after ten times circulate, protected with optical layer group 120
Organic illuminating element 110 blue light emitting strength ratio only with polarizing layer 121 protect organic illuminating element 110 blue light emitting it is strong
Degree is higher by about 13.7%.
From the foregoing, it will be observed that optical layer group 120 can effectively protect organic illuminating element 110, to slow down the generation of brightness decay.
It refer to Fig. 4 A, Fig. 4 B and Fig. 4 C.Fig. 4 A are illustrated in the cross-pressure of the feux rouges organic illuminating element 110 under dissimilar structure
The schematic diagram of (cross voltage) relative to the relation of cycle-index.The organic hair of green glow that Fig. 4 B are illustrated under dissimilar structure
Schematic diagram of the cross-pressure of optical element 110 relative to the relation of cycle-index.The organic hair of blue light that Fig. 4 C are illustrated under dissimilar structure
Schematic diagram of the cross-pressure of optical element 110 relative to the relation of cycle-index.Test point in figure using triangular marker (▲) is sets
The situation that optical layer group 120 protects organic illuminating element 110 is equipped with, this structure is first structure, such as Figure 1A light-emitting device 1.
With the test point of diamond indicia (◆) only to set polarizing layer 121 to protect the situation of organic illuminating element 110 in figure, this structure is
Second structure.The test point of (●) is marked to be to be not provided with the situation that other elements protect organic illuminating element 110 with circle in figure,
This structure is the 3rd structure.
As shown in Figure 4 A, in the 3rd structure when being not provided with other elements protection organic illuminating element 110, the organic hair of feux rouges
The cross-pressure of optical element 110 can constantly rise, and the cross-pressure after ten circulations rises about 4.5~5 volts.Polarizing layer 121 is only set
In the second structure when protecting organic illuminating element 110, the cross-pressure of feux rouges organic illuminating element 110 can relatively slowly rise, and ten
Cross-pressure after secondary circulation rises about 3 volts.It is red in first structure when the protection organic illuminating element 110 of optical layer group 120 is set
The cross-pressure of light organic illuminating element 110 can more slowly rise, and the cross-pressure after ten circulations only rises about 1.5 volts.Yu Shici
After circulation, the cross-pressure for the feux rouges organic illuminating element 110 protected with optical layer group 120 with the protection feux rouges of polarizing layer 121 than only having
The cross-pressure of machine light-emitting component 110 is low about 1.5 volts.
Similarly, as shown in Figure 4 B, it is green in the 3rd structure when being not provided with other elements protection organic illuminating element 110
The cross-pressure of light organic illuminating element 110 can constantly rise, and the cross-pressure after ten circulations rises about 4.5~5 volts.Only set inclined
In the second structure during the protection organic illuminating element 110 of photosphere 121, the cross-pressure of green glow organic illuminating element 110 can be relatively slowly
Rise, the cross-pressure after ten circulations rises about 2~2.5 volts.During 120 protection organic illuminating element 110 of setting optical layer group
In first structure, the cross-pressure of green glow organic illuminating element 110 can more slowly rise, and the cross-pressure after ten circulations rises about 1.5
Volt.After Yu Shici circulations, the cross-pressure ratio for the green glow organic illuminating element 110 protected with optical layer group 120 is only with polarizing layer 121
Protect the cross-pressure of green glow organic illuminating element 110 low about 0.8 volt.
Similarly, as shown in Figure 4 C, in the 3rd structure for being not provided with other elements protection organic illuminating element 110, blue light
The cross-pressure of organic illuminating element 110 can constantly rise, and the cross-pressure after ten circulations rises about 5~5.5 volts.Polarisation is only set
Layer 121 is protected in the second structure of organic illuminating element 110, and the cross-pressure of blue light organic emissive element 110 can relatively slowly rise,
Cross-pressure after ten circulations rises about 3~3.5 volts.Optical layer group 120 is set to protect the first structure of organic illuminating element 110
In, the cross-pressure of blue light organic emissive element 110 can more slowly rise, and the cross-pressure after ten circulations rises about 2.5~3 volts.
After Yu Shici circulations, the cross-pressure ratio for the blue light organic emissive element 110 protected with optical layer group 120 is only protected with polarizing layer 121
The cross-pressure of organic illuminating element 110 is low about 0.6 volt.
From the foregoing, it will be observed that optical layer group 120 can effectively protect organic illuminating element 110, to slow down the situation of cross-pressure rising, enter
And power consumption can be reduced.
In addition, the light-emitting device described below according to various embodiments of the present invention.
Fig. 5 A are refer to, the diagrammatic cross-section of the light-emitting device 2 according to another embodiment of the present invention is illustrated.In this implementation
In example, light-emitting device 2 includes organic illuminating element 110, can protected as the polarizing layer 121 and filter layer 122, first of optical layer group
The protective layer 132 of sheath 131 and second.Fig. 5 A organic illuminating element 110, polarizing layer 121 and filter layer 122 can with Figure 1A
Organic illuminating element 110, polarizing layer 121 and filter layer 122 are similar or identical, therefore its detailed content that will not be repeated here.Second
Protective layer 132 is arranged on organic illuminating element 110, and light-emitting area 110a the second protective layers 132 of direction.Second protective layer 132
It is arranged between the first protective layer 131 and organic illuminating element 110.The hardness of first protective layer 131 is more than the second protective layer
132.First protective layer 131 and the second protective layer 132 all can be light-transmitting materials.First protective layer 131 can be for example reinforcing glass
Glass cover plate, but be not limited.Second protective layer can be for example glass or plastic cement, but be not limited.
In the present embodiment, the second protective layer 132 may be disposed on the light-emitting area 110a of organic illuminating element 110.Filter
Layer 122 may be disposed on the second protective layer 132.Polarizing layer 121 may be disposed on filter layer 122.First protective layer 131 can be set
In on polarizing layer 121.Wherein, it can be directly tightly engaged between each layer, or glue-line or air layer can be accompanied, more or can part
It is tightly engaged into and part accompanies glue-line or air layer.
Fig. 5 B are refer to, the diagrammatic cross-section of the light-emitting device 3 according to another embodiment of the present invention is illustrated.In this implementation
In example, the second protective layer 132 may be disposed on the light-emitting area 110a of organic illuminating element 110.First protective layer 131 may be disposed at
On second protective layer 132.Filter layer 122 may be disposed on the first protective layer 131.Polarizing layer 121 may be disposed at filter layer 122
On.Wherein, can be directly tightly engaged between each layer, or glue-line or air layer can be accompanied, more or can partly be tightly engaged into and
Part accompanies glue-line or air layer.
Fig. 5 C are refer to, the diagrammatic cross-section of the light-emitting device 4 according to another embodiment of the present invention is illustrated.In this implementation
In example, the second protective layer 132 may be disposed on the light-emitting area 110a of organic illuminating element 110.Filter layer 122 may be disposed at second
On protective layer 132.First protective layer 131 may be disposed on filter layer 122.Polarizing layer 121 may be disposed at the first protective layer 131
On.Wherein, can be directly tightly engaged between each layer, or glue-line or air layer can be accompanied, more or can partly be tightly engaged into and
Part accompanies glue-line or air layer.
Fig. 5 D are refer to, the diagrammatic cross-section of the light-emitting device 5 according to another embodiment of the present invention is illustrated.In this implementation
In example, filter layer 122 may be disposed on the light-emitting area 110a of organic illuminating element 110.Polarizing layer 121 may be disposed at filter layer
On 122.Second protective layer 132 may be disposed on polarizing layer 121.First protective layer 131 may be disposed on the second protective layer 132.
Wherein, it can be directly tightly engaged between each layer, or glue-line or air layer can be accompanied, can be tightly engaged into more or partly and part
Accompany glue-line or air layer.
Fig. 5 E are refer to, the diagrammatic cross-section of the light-emitting device 6 according to another embodiment of the present invention is illustrated.In this implementation
In example, filter layer 122 may be disposed on the light-emitting area 110a of organic illuminating element 110.Second protective layer 132 may be disposed at optical filtering
On layer 122.Polarizing layer 121 may be disposed on the second protective layer 132.First protective layer 131 may be disposed on polarizing layer 121.Its
In, it can directly be tightly engaged into, or glue-line or air layer can be accompanied, can be tightly engaged into more or partly and part is pressed from both sides between each layer
There are glue-line or air layer.
Fig. 5 F are refer to, the diagrammatic cross-section of the light-emitting device 7 according to another embodiment of the present invention is illustrated.In this implementation
In example, filter layer 122 may be disposed on the light-emitting area 110a of organic illuminating element 110.Second protective layer 132 may be disposed at optical filtering
On layer 122.First protective layer 131 may be disposed on the second protective layer 132.Polarizing layer 121 may be disposed at the first protective layer 131
On.Wherein, can be directly tightly engaged between each layer, or glue-line or air layer can be accompanied, more or can partly be tightly engaged into and
Part accompanies glue-line or air layer.
In summary, the light-emitting device of embodiments of the invention, can be by the configuration of optical layer group 120 so that light
During from second surface through optical layer group by first surface, wavelength value is only capable of for the higher light of below 380nm energy
Printing opacity is less than or equal to 2%, and is unlikely to damage organic illuminating element, and the light that organic illuminating element is sent from
Second surface is through optical layer group during by first surface, then light will not too much be influenceed by optical layer group, and can
The performance for the light that maintenance organic illuminating element is sent.
Although the present invention is disclosed above with foregoing embodiment, so it is not limited to the present invention.This hair is not being departed from
In bright spirit and scope, carried out by change and retouching, belong to the present invention scope of patent protection.Defined on the present invention
Protection domain refer to claims.
Claims (14)
1. a kind of light-emitting device, it is characterised in that the light-emitting device includes：
One organic illuminating element, with a light-emitting area；And
One optical layer group, with relative a first surface and a second surface, the first surface second surface connects
The nearly organic illuminating element, the optical layer group includes：
One filter layer, is arranged in the light-emitting area of the organic illuminating element；And
One polarizing layer, is arranged in the light-emitting area of the organic illuminating element；
Wherein, one first light is turned into by the first surface when a light passes through the optical layer group from the second surface
Line, first light has one first spectrum, when the light passes through from the first surface through the optical layer group
The second surface turns into one second light, and second light has one second spectrum, and first spectrum is different from described
Second spectrum, wherein first spectrum is less than or equal to 2% in wavelength value for below 380nm penetrance.
2. Fa Guang Installed as claimed in claim 1 are put, it is characterised in that the filter layer is located at the organic illuminating element and institute
State between polarizing layer.
3. Fa Guang Installed as claimed in claim 1 are put, it is characterised in that second spectrum is below 380nm's in wavelength value
Penetrance is more than 2%.
4. light-emitting device as claimed in claim 1, it is characterised in that the filter layer has a quick shaft direction different each other
And a slow-axis direction, refractive index of the filter layer along the quick shaft direction and different along the refractive index of the slow-axis direction.
5. light-emitting device as claimed in claim 1, it is characterised in that the filter layer is below 420nm's for wavelength value
The penetrance of light is less than 15%.
6. light-emitting device as claimed in claim 1, it is characterised in that the filter layer is sent out for the organic illuminating element
The penetrance that the wavelength peak of the blue light gone out subtracts below the wavelength value of the wavelength halfwidth of the blue light is less than 2%.
7. light-emitting device as claimed in claim 6, it is characterised in that the wave-length coverage of the blue light is 420nm to 480nm.
8. light-emitting device as claimed in claim 1, it is characterised in that the filter layer is 90% for the penetrance of visible ray
More than.
9. light-emitting device as claimed in claim 1, it is characterised in that the thickness of the thickness of the filter layer and the polarizing layer
Summation be less than or equal to 180 microns.
10. light-emitting device as claimed in claim 1, it is characterised in that the filter layer and the polarizing layer are for visible ray
Total penetrance be more than 43%.
11. light-emitting device as claimed in claim 1, it is characterised in that the polarizing layer includes a phase delay layer, is arranged at
On the organic illuminating element, and to postpone the phase of passed through light.
12. light-emitting device as claimed in claim 11, it is characterised in that the phase delay layer is quarter-wave plate.
13. light-emitting device as claimed in claim 1, it is characterised in that the light-emitting device further includes one first protective layer, if
It is placed on the organic illuminating element, and the light-emitting area is towards first protective layer.
14. light-emitting device as claimed in claim 13, it is characterised in that the light-emitting device further includes one second protective layer,
It is arranged between first protective layer and the organic illuminating element, the hardness of first protective layer is more than described second and protected
Sheath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105141479A TWI589048B (en) | 2016-12-14 | 2016-12-14 | Light emitting device |
| TW105141479 | 2016-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106972112A true CN106972112A (en) | 2017-07-21 |
| CN106972112B CN106972112B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710096110.6A Active CN106972112B (en) | 2016-12-14 | 2017-02-22 | light emitting device |
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|---|---|
| CN (1) | CN106972112B (en) |
| TW (1) | TWI589048B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897298A (en) * | 2005-07-01 | 2007-01-17 | 三星电子株式会社 | Display device and method of manufacturing the same |
| CN101212023A (en) * | 2006-12-28 | 2008-07-02 | 上海广电电子股份有限公司 | Organic top luminous device and method for producing the luminous device |
| US20140368766A1 (en) * | 2012-02-07 | 2014-12-18 | Sharp Kabushiki Kaisha | Display element |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004102223A (en) * | 2002-07-15 | 2004-04-02 | Fuji Photo Film Co Ltd | Filter for organic electroluminescent display element |
| EP1557891A3 (en) * | 2004-01-20 | 2006-10-04 | LG Electronics Inc. | Organic electroluminescent device and fabrication method thereof |
| TWI520398B (en) * | 2012-06-15 | 2016-02-01 | 群康科技(深圳)有限公司 | Organic light-emitting device and image display system employing the same |
| JP2016170271A (en) * | 2015-03-12 | 2016-09-23 | 大日本印刷株式会社 | Optical sheet and display device |
-
2016
- 2016-12-14 TW TW105141479A patent/TWI589048B/en active
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2017
- 2017-02-22 CN CN201710096110.6A patent/CN106972112B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897298A (en) * | 2005-07-01 | 2007-01-17 | 三星电子株式会社 | Display device and method of manufacturing the same |
| CN101212023A (en) * | 2006-12-28 | 2008-07-02 | 上海广电电子股份有限公司 | Organic top luminous device and method for producing the luminous device |
| US20140368766A1 (en) * | 2012-02-07 | 2014-12-18 | Sharp Kabushiki Kaisha | Display element |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI589048B (en) | 2017-06-21 |
| TW201822389A (en) | 2018-06-16 |
| CN106972112B (en) | 2018-11-09 |
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