CN103827948A - Oled display device having some of the pixels containing two diodes with organic layers of different thickness - Google Patents
Oled display device having some of the pixels containing two diodes with organic layers of different thickness Download PDFInfo
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- CN103827948A CN103827948A CN201280047504.8A CN201280047504A CN103827948A CN 103827948 A CN103827948 A CN 103827948A CN 201280047504 A CN201280047504 A CN 201280047504A CN 103827948 A CN103827948 A CN 103827948A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
-
- 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
- H10K59/84—Parallel electrical configurations of multiple OLEDs
-
- 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
- H10K59/88—Dummy elements, i.e. elements having non-functional features
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/088—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements using a non-linear two-terminal element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
Abstract
A display comprises an array of organic light emitting diode (OLED) pixels, at least some of the pixels comprising a first (3) and a further diode (4) connected in parallel to a drive current. The first diode (3) has a larger area than the further diode (4), and the further diode (4) has a thinner active organic layer than the first diode (3), such that the further diode (4) has a greater drive current density in use than the first diode (3). The further diode ages faster than the first diode because it is driven harder. As it ages, the conductivity of the further diode decreases, and so more current passes through the first diode. The light emitted by the first diode therefore decreases at a slower rate than in the absence of the further diode, improving lifetime and reducing image burn-in at a cost of a small reduction in the initial efficiency of the display.
Description
Present invention relates in general to display.More particularly the present invention relates to have the display device of organic electroluminescent pixel, for example Organic Light Emitting Diode (OLED) display device.
Background of invention
Organic Light Emitting Diode (OLED) comprises the electro-optic displays of advantageous particularly form.They are bright, colored, switch fast, provide wide visual angle and can easily and at an easy rate in various substrates, manufacture.
According to used material, can manufacture organic (it comprises organic metal here) LED with the polymkeric substance of a series of colors, non-polymeric molecule or dendrimer.The case history of the organic LED based on polymkeric substance is in WO90/13148, WO95/06400 and WO99/48160; The case history of the device based on non-polymeric molecule is in US4, in 539,507; And the case history of the material based on dendrimer is in WO99/21935 and WO02/067343.
The basic structure of typical organic LED relates to glass or plastic-substrates, and this substrate support transparent anode layer (comprising for example tin indium oxide (ITO)), deposits hole transmission layer, electroluminescence layer and optional electron transfer layer thereon, and negative electrode.Hole transmission layer can comprise for example PEDOT:PSS (tygon-dioxy thiophene of poly styrene sulfonate-doping).Electroluminescence layer can comprise poly-fluorenes polymer, PPV, polythiophene or the luminous object in non-emissive property main body.Many these type of materials are recorded in Zhigang Li and Hong Meng edits, CRC publishing house publish books " Organic Light-Emitting Materials and Devices " (Taylor and Francis) [2007] (ISBN10:1-57444-574-X) in.
Cathode layer typically comprises such as calcium of low work function metal, and can comprise and the other layer of electroluminescence layer direct neighbor, and the fluoride of for example sodium or lithium or the layer of conducting polymer, in order to realize the electron level coupling of improving.Provide respectively being connected to power supply with the contact wire of anode and negative electrode.Also can adopt identical basic structure for little molecular device.In this structure, light can be launched through transparent anode and substrate and the device with this structure and be called as " bottom emission body ".Also can construct the device through emission of cathode, for example by keeping the thickness of cathode layer, to being less than about 50-100mm, to make negative electrode be substantial transparent.
Can in substrate, deposit organic LED to form the pixellated display of monochrome or polychrome according to the matrix of pixel.Can use many group redness, green and blue-light-emitting pixel structure multicolor display.The pixel of transmitting different colours needn't have equal area.
In the display device completing, pixel will be connected to drive with driving circuit pixel response video input signals etc.Such circuit and OLED device are normally known in the art.Further information about conventional OLED materials and devices is found in multiple textbook, for example " Organic Light-Emitting Materials and Devices ", Zhigang Li and Hong Meng edit, and CRC publishing house publishes (Taylor and Francis) [2007] (ISBN10:1-57444-574-X).
In this class display, conventionally go (or row) circuit to select pixel to carry out addressing to each element by startup, and write to produce demonstration to pixel column (or row).So-called active matrix displays has the memory element contacting with each pixel, be typically holding capacitor and transistor, and passive matrix display do not have this type of memory element and repeatedly scanned (some is similar to CRT image) to produce the impression of stabilized image.
The problem of luminous organic material is that the life-span is short, than other technology.For example, reducing by 50% time used from the light of blue pixel can be the magnitude of 20,000 hours.In addition, eyes are very responsive for luminance difference, if the time span that therefore still image exists on display is enough to make the brightness in bright areas to reduce approximately 3%, it causes image burn-in (burn-in) or image retention (sticking) so, at this moment no matter show subsequently which kind of image, lasting afterimage is permanent visible on display.
Summary of the invention
According to a first aspect of the invention, provide one to include the display of the array of OLED (OLED) pixel, described pixel has active organic layer separately, at least some pixel packets are containing the 1st diode and other diode, described the 1st diode and in addition diode are connected in parallel with each other and are connected to drive current source used, described the 1st diode has than the larger area of described other diode, and the active organic layer of described other diode is thinner than the active organic layer of described the 1st diode, so that in use described other diode possesses than the larger drive current density of described the 1st diode.
In one embodiment, this display includes the array of OLED (OLED) pixel, at least some pixel packets are the 1st diode and the other diode to drive current source used containing parallel join, described the 1st diode has than the larger area of described other diode, and described other diode has than the thinner active organic layer of described the 1st diode, so that in use described other diode possesses than the larger drive current density of described the 1st diode.
In use, described other diode is aging faster than described the 1st diode, because it is driven more consumingly.Along with it is aging, the electric conductivity of described other diode reduces so that more electric current passes through described the 1st diode.Therefore, the 1st diode is sent out penetrated light and is reduced with slower speed than the situation that does not have a described other pixel, therefore improves the life-span and reduces the problem of image burn-in, and this is with a small amount of reduction of display starting efficiency in return.
In dependent claims, having described other preferably arranges.
Especially, described other diode can be adjusted to non-emissive property, or can further comprise opaque article, this opaque article is set to prevent that any light by described other diode transmitting is by described display emission.
The array of pixel can comprise the pixel with different colours of multiple groups, and at least some pixels that wherein comprise described the 1st diode and described other diode all belong to the have same color pixel groups of (for example blue).
Preferably, the area of each other diode is less than 20% of each the 1st diode area, be most preferably less than or equal to each the 1st diode area 10%.
The thickness of the active region of described other diode is advantageously than the thin thickness at least 10% of described the 1st diode.Preferably than the thin thickness at least 20% of described the 1st diode.
The active organic layer of the 1st diode and in addition diode can be each self-contained multiple layers, and each layer comprises different materials or multiple different materials.
Described active organic layer can comprise the potpourri of polymeric material, non-cohesive material or two types of materials.
Accompanying drawing summary
Now with reference to accompanying drawing, embodiment of the present invention are only described by way of example, wherein:
Fig. 1 illustrates (a) standard prior art pixel and (b) planimetric map of pixel of the present invention,
Fig. 2 illustrates the xsect of the pixel according to the present invention,
Fig. 3 illustrates how described the 1st diode and other diode are connected in parallel with each other,
Fig. 4 illustrates the how temporal evolution of brightness of prior art pixel and pixel of the present invention.
Fig. 5 illustrates the reduction of the brightness decay of described the 1st diode and the electric current by described less other diode.
Describe in detail
The invention provides a kind of display, wherein active pixel has a kind of for change built-in (in-built) mechanism of current density of pixel during driving.This depends on " sacrifice " diode of the small size of use and active pixel parallel running.Can manufacture described small size diode with the material identical with the material of main pixel.Described in this case in the time being driven, small size diode is by luminous.In order to prevent the shown device transmitting of this light, the shading element that comprises opaque layer (for example thick metal electrode) can be provided, be arranged in the path from the light of small size diode.As an alternative, can in small size pixel, use and cause the photoemissive material of minimum intrinsic.Importantly from the shown device transmitting of the light of this small size diode, because it is driven and faster aging this fact means that from image retention or the branding of this little diode may be visible for eyes more consumingly compared with main pixel.
In the time driving active pixel, the non-emissive property pixel of small size operates under higher current density.This causes this small size pixel more deteriorated quickly than light emitting pixel.In the time that it is deteriorated, electric conductivity reduces, and therefore more electric current is switched to active pixel.This electric current increase in active pixel has made up owing to driving in the decline aspect PL efficiency.Result is that the initial decay of brightness significantly improves.In other words, the light that the 1st diode is launched is than not existing the situation of described other pixel with slower rate reduction, thus with display starting efficiency be reduced on a small quantity cost, improve the life-span and reduce image burn-in.
Fig. 1 illustrates (a) standard prior art pixel 1 and (b) according to the planimetric map of pixel of the present invention (2).Pixel 2 comprises the 1st diode 3 and other diode 4, and it comprises the pixel in parallel being made up of identical LEP device stack (stack) substantially, but has the LEP thinner than pixel 2 and less area.This guarantees that current density by this pixel is higher than active pixel, but total current drain remains on minimum level, thereby guarantees high panel efficiency.
The active material that comprises OLED device stack (16) can for example comprise the hole transmission layer depositing by ink jet printing, by its baking or optionally crosslinked, then by the luminous organic layer of ink jet printing step deposition subsequently.
Preferably " sacrifice " other diode (4) is arranged to have thinner OLED device stack (18), for example, by the thinner luminous organic layer of deposition.
The deposition that can realize with printing formula thinner layer, large (the 1st) diode will need the decline of some with realize target thickness, in little (in addition) diode, can reduce the quantity of decline to realize thinner luminescent layer.
Alternative method is to be two printing passages of luminescent layer operation, and the first passage is filled the 1st diode, and the second passage is filled less other diode.
Now in detail the instantiation of device constructed in accordance will be described.
In the substrate of glass with transparent ito anode, manufacture device.Limit described diode and other diode by the embankment of being made by insulating material.By ink jet printing to the hole injection layer that deposits 35nm thickness on the anode in embankment, the sandwich material of baking subsequently and deposition 22nm thickness.Toast again this structure to remove solvent.
Described diode area is 10 square millimeters, and described other diode area is 1 square millimeter.Next, light emitting polymer thick 90nm is deposited in the embankment that limits described diode, and one deck same material thick 55nm is deposited in described other diode.Toast again these layers to remove excessive solvent.Then the negative electrode of the independent successive layer that comprises NaF and aluminium is evaporated to the top of device by shadow mask (shadow mask).
The hole-injecting material using is poly-(thiophene-3-[2-(2-methoxy ethoxy) ethoxy]-2,5-bis-bases), sulfonation solution (being purchased from Sigma-Aldrich).
Sandwich material comprises the multipolymer with following repetitive:
In (repetitive (b), is recorded in WO2005/049546), and
Solvent for this multipolymer is o-xylene.
Light-emitting polymer layer comprises the multipolymer with following repetitive: (d) (9,9) two-octyl group fluorenes, (e) (9,9) two-hexyl fluorenes and (f) fen
piperazine.Solvent for this multipolymer is also o-xylene.
By synthetic these multipolymers of known Suzuki method.
Figure 4 illustrates above-mentioned device and there is no the brightness decay of the common pixel of described other diode.X coordinate is at 8mA/cm
2drive current under survey brightness divided by original intensity.Y coordinate be in hour time.To see for pixel of the present invention, reach 80% time used of original intensity double more than, from 7 hours to 16 hours.
Fig. 5 illustrates described 1(large area) initial decay of the brightness of diode and by the described coordinate diagram reducing along with it is aging compared with the electric current of little other diode.In the figure, the coordinate diagram on top illustrates the brightness of the 1st diode according to the axis on left-hand side, and it illustrates the brightness of actual measurement with arbitrary unit.The coordinate diagram of bottom illustrates the electric current by described other diode according to the axis on right-hand side, and it reads with milliampere.
Certainly, can substitute concrete material mentioned above in main and other diode structure of the present invention with any material that can be used for forming the layer in OLED device.Particularly, can use for example PVK of substituting polymkeric substance and PPV for luminescent layer, as selecting it can also comprise the phosphorescence guest compound in main polymer.Can use PEDOT and three arylamine multipolymers as hole transport or sandwich material.
As another kind of alternative, can use non-polymeric organic material as active layer.Such material comprises Alq3, PBD, NPD, three arylamine etc.Such material is called as " little molecule " (sm) material sometimes, and can comprise dipolymer, trimer or tetramer structure, or dendrimer (dendrimer).
Suitable polymkeric substance and the explanation of non-cohesive material are found in multiple textbook, for example Zhigang Li and Hong Meng edit, CRC publishing house publish " Organic Light-Emitting Materials and Devices " (Taylor and Francis) [2007] (ISBN10:1-57444-574-X) in, especially the 2nd chapter and the 3rd chapter.
Except luminescent layer, described diode and in addition diode can comprise 2 or more active layers, for example electron transfer layer, hole transmission layer, exciton barrier-layer, hole and electron injecting layer.Conventionally, little molecule (non-polymeric) OLED often has a lot of active layers in device.
Although use ink jet printing to manufacture the device in the present embodiment, can use for example nozzle printing of other solution processing technology, spin coating, the coating of slit-type squash type and intaglio plate or flexographic printing mode as an alternative.Device can also comprise the layer that uses gas phase deposition technology (for example evaporation or sputter) deposition.
Although will be appreciated that and describe specific embodiments more of the present invention in detail, those skilled in the art can make various modifications and improvement and not depart from as defined scope of the present invention in following claim.
Claims (12)
1. one kind includes the display of the array of OLED (OLED) pixel, described pixel has active organic layer separately, at least some pixel packets are containing the 1st diode and other diode, described the 1st diode and in addition diode are connected in parallel with each other and are connected to drive current source used, described the 1st diode has than the larger area of described other diode, and the active organic layer of described other diode is thinner than the active organic layer of described the 1st diode, so that in use described other diode possesses than the larger drive current density of described the 1st diode.
2. display according to claim 1, wherein said other diode is adjusted to non-emissive property.
3. display according to claim 1, further comprises opaque article, described opaque article is set to prevent that being shown device by any light of described other diode transmitting launches.
4. according to the display described in aforementioned claim any one, the pixel with different colours that wherein said pel array comprises multiple groups, and at least some pixels that wherein comprise described the 1st diode and described other diode all belong to the pixel groups with same color.
5. display according to claim 4, wherein said same color is blue.
6. according to the display described in aforementioned claim any one, wherein the area of each other diode is less than 20% of each the 1st diode area.
7. according to the display described in aforementioned claim any one, wherein the area of each other diode is less than 10% of each the 1st diode area.
8. according to the display described in aforementioned claim any one, the thin thickness at least 10% of the 1st diode described in the Thickness Ratio of the active region of wherein said other diode.
9. according to the display described in aforementioned claim any one, the thin thickness at least 20% of the 1st diode described in the Thickness Ratio of the active region of wherein said other diode.
10. according to the display described in aforementioned claim any one, the each self-contained multiple layers of the active organic layer of wherein said the 1st diode and described other diode, each layer comprises different materials or multiple different materials.
11. according to the display described in aforementioned claim any one, and wherein said active organic layer comprises luminescence polymer material.
12. according to the display described in claim 1 to 10 any one, and wherein said active organic layer comprises luminous non-cohesive material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1116749.1 | 2011-09-28 | ||
| GB1116749.1A GB2495107A (en) | 2011-09-28 | 2011-09-28 | Organic light emitting diode display device with further small-area sacrificial diodes |
| PCT/GB2012/000710 WO2013045869A1 (en) | 2011-09-28 | 2012-09-12 | Oled display device having some of the pixels containing two diodes with organic layers of different thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103827948A true CN103827948A (en) | 2014-05-28 |
Family
ID=44994143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280047504.8A Pending CN103827948A (en) | 2011-09-28 | 2012-09-12 | Oled display device having some of the pixels containing two diodes with organic layers of different thickness |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2014532260A (en) |
| KR (1) | KR20140082745A (en) |
| CN (1) | CN103827948A (en) |
| GB (2) | GB2495107A (en) |
| WO (1) | WO2013045869A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010019319A1 (en) * | 2000-03-06 | 2001-09-06 | Lg Electronics, Inc. | Apparatus and method for controlling gray level for display panel |
| CN1589477A (en) * | 2001-11-16 | 2005-03-02 | 薄膜电子有限公司 | A matrix-addressable optoelectronic apparatus and electrode means in the same |
| WO2008100369A1 (en) * | 2007-02-16 | 2008-08-21 | Eastman Kodak Company | Active matrix display device |
| CN102082181A (en) * | 2010-12-15 | 2011-06-01 | 四川虹视显示技术有限公司 | Thin film transistor structure of pixel circuit for organic light emitting device |
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| US4539507A (en) | 1983-03-25 | 1985-09-03 | Eastman Kodak Company | Organic electroluminescent devices having improved power conversion efficiencies |
| GB8909011D0 (en) | 1989-04-20 | 1989-06-07 | Friend Richard H | Electroluminescent devices |
| GB9317932D0 (en) | 1993-08-26 | 1993-10-13 | Cambridge Display Tech Ltd | Electroluminescent devices |
| JP3808534B2 (en) * | 1996-02-09 | 2006-08-16 | Ｔｄｋ株式会社 | Image display device |
| EP1027398B1 (en) | 1997-10-23 | 2004-06-09 | Isis Innovation Limited | Light-emitting dendrimers and devices |
| GB9805476D0 (en) | 1998-03-13 | 1998-05-13 | Cambridge Display Tech Ltd | Electroluminescent devices |
| EP2272906B1 (en) | 2000-06-12 | 2020-05-20 | Sumitomo Chemical Company Limited | Compositions for electroluminescent material and their devices |
| GB0104177D0 (en) | 2001-02-20 | 2001-04-11 | Isis Innovation | Aryl-aryl dendrimers |
| DE112004002193B4 (en) | 2003-11-14 | 2017-03-23 | Sumitomo Chemical Co., Ltd. | Polymers of halogenated bis-diarylamino-polycyclic aromatic compounds |
| TW201219350A (en) | 2003-11-17 | 2012-05-16 | Sumitomo Chemical Co | Crosslinkable arylamine compounds |
| US20070063192A1 (en) * | 2005-09-20 | 2007-03-22 | Toppoly Optoelectronics Corp. | Systems for emitting light incorporating pixel structures of organic light-emitting diodes |
| KR100729077B1 (en) * | 2005-11-14 | 2007-06-14 | 삼성에스디아이 주식회사 | Organic light-emitting display device |
-
2011
- 2011-09-28 GB GB1116749.1A patent/GB2495107A/en not_active Withdrawn
-
2012
- 2012-09-12 WO PCT/GB2012/000710 patent/WO2013045869A1/en active Application Filing
- 2012-09-12 KR KR1020147011161A patent/KR20140082745A/en not_active Application Discontinuation
- 2012-09-12 GB GB1404977.9A patent/GB2509270A/en not_active Withdrawn
- 2012-09-12 CN CN201280047504.8A patent/CN103827948A/en active Pending
- 2012-09-12 JP JP2014532460A patent/JP2014532260A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010019319A1 (en) * | 2000-03-06 | 2001-09-06 | Lg Electronics, Inc. | Apparatus and method for controlling gray level for display panel |
| CN1589477A (en) * | 2001-11-16 | 2005-03-02 | 薄膜电子有限公司 | A matrix-addressable optoelectronic apparatus and electrode means in the same |
| WO2008100369A1 (en) * | 2007-02-16 | 2008-08-21 | Eastman Kodak Company | Active matrix display device |
| CN102082181A (en) * | 2010-12-15 | 2011-06-01 | 四川虹视显示技术有限公司 | Thin film transistor structure of pixel circuit for organic light emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013045869A1 (en) | 2013-04-04 |
| JP2014532260A (en) | 2014-12-04 |
| GB201404977D0 (en) | 2014-05-07 |
| GB2495107A (en) | 2013-04-03 |
| KR20140082745A (en) | 2014-07-02 |
| GB2509270A (en) | 2014-06-25 |
| GB201116749D0 (en) | 2011-11-09 |
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