10338results about "Organic semiconductor devices" patented technology

An object of the present invention is to provide a new light-emitting device with the use of an amorphous oxide. The light-emitting device has a light-emitting layer existing between first and second electrodes and a field effect transistor, of which the active layer is an amorphous.

An Organic Light Emitting Display (OLED) and its method of fabrication includes: a transparent substrate; a photochromatic layer formed on a first surface of the transparent substrate; at least one transparent Thin Film Transistor (TFT) formed on a first surface of the transparent substrate, and an organic light emitting device formed on and electrically connected to the transparent TFT.

An organic electroluminescent element comprising a light emission layer and a hole blocking layer adjacent to the light emission layer, wherein, (i) the light emission layer contains a compound having a specified partial structure and having a molecular weight of not more than 1700; and (ii) the hole blocking layer contains a derivative selected from the group consisting of a styryl derivative, a boron derivative and a carboline derivative.

Azatriphenylene derivatives and their use in the electron-transporting layer of an electroluminescent device that comprises an anode, a spaced-apart cathode, and at least one electron-transporting layer disposed between the spaced-apart anode and cathode. Such EL devices provide lower drive voltage, improved power efficiency, and longer operational lifetime.

The triazinewherein Ar1, Ar2, Ar3, and Ar4 are each independently an aryl; R1 and R2 are substituents selected from the group consisting of hydrogen, an alkyl, an aryl, an alkoxy, a halogen atom, and a cyano; R3 and R4 are each a divalent group L selected from the group consisting of -C(R'R'')-, alkylene, an oxygen atom, a sulfur atom, and -Si(R'R'')-, wherein R' and R'' are selected from the group consisting of hydrogen, alkyl, alkoxy, and aryl.

Organic light emitting devices are described wherein the emissive layer comprises a host material containing a fluorescent or phosphorescent emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, wherein an intersystem crossing molecule of optical absorption spectrum matched to the emission spectrum of the emissive molecule enhances emission efficiency.

An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).

An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer containing a host material and an emitting dopant material wherein the host includes a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions and being further substituted or not with electron donating groups sufficient so as to provide an anthracene derivative that exhibits a measured oxidation potential of less than 1.28 V.

An OLED device comprises a cathode, a light emitting layer and an anode, in that order, wherein

(i) the light-emitting layer comprises up to 10 volume % of a light emitting compound and at least one anthracene host compound of Formula (3):

wherein

• • W₁-W₁₀ independently represents hydrogen or an independently selected substituent, and (ii) a further layer located between the cathode and the light emitting layer, contains (a) 10-volume % or more of an anthracene compound of Formula (3) and (b) at least one salt or complex of an element selected from Group IA, IIA, IIIA and IIB of the Periodic Table. Such devices exhibit reduced drive voltage while maintaining good luminance.

A display unit capable of being simply designed and manufactured by using more simplified light emitting device structure while capable of high definition display and display with superior color reproducibility and a manufacturing method thereof are provided. The display unit is a display unit (1), wherein a plurality of organic EL devices (3B), (3G), and (3R), in which a function layer (6) including a light emitting layer (11) is sandwiched between a lower electrode (4) made of a light reflective material and a semi-transmissive upper electrode (7), and which has a resonator structure in which light h emitted in the light emitting layer (11) is resonated using a space between the lower electrode (4) and the upper electrode (7) as a resonant section (15) and is extracted from the upper electrode (7) side are arranged on a substrate (2). In the respective organic EL devices (3B), (3G), and (3R), the function layer (6) is made of an identical layer, and an optical distance L of the resonant section (15) is set to a value different from each other so that blue, green, or red wavelength region is resonated.

The present invention provides a novel aromatic amine derivative enabling to obtain an organic electroluminescence device which is driven under a low voltage, exhibits small increase in the driving voltage after continuous driving for a long time and has a long life. The amine derivative is represented by the following general formula (1). In the formula, R¹ to R⁷ each represent, for example, hydrogen atom or a substituted or unsubstituted aryl group having 5 to 50 nuclear carbon atoms; a represents an integer of 1 or greater; b, c, g and h each represent an integer of 1 to 5, and d, e and f each represent an integer of 1 to 4; and Ar¹ and Ar² represent a group represented by following general formulae (2) and (3), respectively, and the groups represented by Ar¹ and Ar² are not same with each other. R⁸ to R¹¹ each represent, for example, hydrogen atom; and i and m each represent an integer of 1 to 5, j and k each represent an integer of 1 to 4, n and p each represent an integer of 0 or greater, and n≠p.

An electro-optical device includes a display panel obtained by forming an electro-optical layer, in which a plurality of pixels is formed, on a glass substrate having a thickness of 50 μm or less; and a support frame supporting the display panel, wherein the display panel has at least a display region in which the plurality of pixels is formed and frame regions formed outside the display region, and wherein at least one side of each of the frame regions is bent from the vicinity of a circumference of the display region to the support frame side and is fixed to the support frame.

Powder desiccant is mixed into a seal which adheres a first substrate to a second substrate, thereby sealing a display region. Almost no moisture permeates through the outer surfaces of the substrates sandwiching the display region, while moisture permeating through the seal is adsorbed by the desiccant. An emissive layer is thereby prevented from deterioration due to moisture. By covering the display region with a resin sealing layer composed of resin having desiccant mixed therein, the display region can reliably be protected from moisture. By forming a groove in the substrate and placing a desiccant therein, moisture can be further reliably adsorbed.

There is provided a flexible display having a new wire structure and a new insulating layer structure. A flexible display includes a flexible substrate having a first area and a second area. The second area is curved in a non-zero angle relative to the plane of the first area. The flexible display further includes a plurality of wires that extend over from the first area to the second area of the flexible substrate. Each of the wires is covered by an upper insulating pattern, which is separated from other upper insulating pattern. Each upper insulating pattern covering the wire has substantially the same trace pattern shape of the corresponding wire thereunder. Accordingly, by adopting the above-described wire structure and upper insulating layer structure, crack generation and propagation in the wires and the insulating layers from bending of the flexible display can be minimized.

The invention provides a display device in which parasitic capacitance associated with data lines and driving circuits is prevented using a bank layer whose primary purpose is to define areas on a substrate in which an organic semiconductor film is formed. When the organic semiconductor film for forming a luminescent element such as an electroluminescent element or an LED is formed is formed in pixel regions (7), the organic semiconductor film is formed in the areas surrounded by the bank layer (bank) formed of a black resist. The bank layer (bank) is also formed between an opposite electrode (op) and data lines (sig) for supplying an image signal to first TFTs (20) and holding capacitors (cap) in the pixel regions (7) thereby preventing parasitic capacitance associated with the data lines (sig).

An organic device has a hole current-electron current conversion layer which comprises a laminate of an electron transportation section and a hole transportation section. The electron transportation section includes a charge transfer complex formed upon an oxidation-reduction reaction between a reduced low work function metal and an electron-accepting organic compound, the reduced metal being produced upon an in-situ thermal reduction reaction caused upon contact, through lamination or mixing by co-deposition, of an organic metal complex compound or an inorganic compound containing at least one metal ion selected from ions of low work function metals having a work function of not more than 4.0 eV, and a thermally reducible metal capable of reducing a metal ion contained in the organic metal complex compound or the inorganic compound in vacuum to the corresponding metal state, and the electron transportation section having the electron-accepting organic compound in the state of radical anions. The hole transportation section includes an organic compound having an ionization potential of less than 5.7 eV and an electron-donating property and an inorganic or organic substance capable of forming a charge transfer complex upon its oxidation-reduction reaction with the organic compound, the organic compound and the inorganic or organic substance being contacted through lamination or mixing, and the electron-donating organic compound is in the state of radical cations.

Electroluminescent devices and materials including an electroluminescent organo-siloxane polymer. The main chain of the organo-siloxane polymer comprises an organic component that can be alkenyl, alkynyl, aralkyl, aryl, heteroaralkyl, and heteroaryl which can be substituted optionally with hydrogen, alkyl, aryl, heteroalkyl, heteroaralkyl, nitro, cyano, hydroxy, alkoxy, aryloxy, thio, alkylthio, arylthio, amino, halogen, dialkylamino, diarylamino, diaralkylamino, arylamino, alkylamino, arylalkylamino, carbonyloxy, carbonylalkoxy, carbonylalkyloxy, alkylcarbonyloxy, arylcarbonyloxy, alkoxylcarbonyloxy, sulfonyl, or sulfonyloxy. The organic component includes at least two covalent bonds coupling the organic component to the main chain of the organo-siloxane polymer. Such devices provide superior performance and mechanical stability compared with conventional organic electroluminescent materials and devices made from such materials.

An electroluminescence display device has a plurality of electroluminescence elements and a driver circuit formed over a substrate. At least a part of the driver circuit is disposed in a display portion of a substrate in order that the size of the display device can be reduced.

An OLED includes a wide gap inert host material doped with two dopants. One of the dopants is an emissive phosphorescent material that can transport either electrons or holes. The other dopant is a charge carrying material that can transport whichever of the electrons and holes that is not transported by the phosphorescent dopant. The materials are selected so that the lowest triplet energy level of the host material and the lowest triplet energy level of the charge carrying dopant material are each at a higher energy level than the lowest triplet state energy level of the phosphorescent dopant material. The device is capable, in particular, of efficiently emitting light in the blue region of the visible spectrum.

An electroluminescent device comprised of an anode, a hole transporting layer, a light emitting layer, and a cathode, wherein said light emitting layer contains a component of the formula wherein Ar1, Ar2, Ar3, and Ar4 are each independently aryl or optionally aliphatic; R1 and R2 are independently selected from the group consisting of hydrogen, aliphatic, halogen, and cyano; L is a suitable linking group; and n is a number of from 0 to about 3.

An OLED device comprises a cathode, an anode, and a light-emitting layer therebetween, and additionally comprises a layer between the cathode and the light-emitting layer including a compound comprising one and only one anthracene nucleus bearing no more than two phenanthroline-containing substituents wherein said anthracene nucleus is substituted in the 2-, 3-, 6-, or 7-position with a phenanthroline-containing substituent. When such materials are included in a layer, such as an electron-transporting layer, that provide both desirable electroluminescent properties as well as good device stability.