Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an organic electroluminescence element, having an effective lower surface side anode configuration to efficiently take light from the upper surface side cathode. SOLUTION: This organic electroluminescence element is manufactured by an anode forming process of forming an anode A containing metal belonging to the fifth group or the sixth group of the periodic table on a substrate 1, an organic layer forming process of forming an organic layer 10 containing a light emission layer 10 on an anode A, and a cathode forming process of forming a cathode K on the organic layer 10. Preferably, in the anode forming process, an anode A is formed tapered. The anode forming process includes a process of forming an insulating film 15 on the anode A after patterning the anode A in a predetermined shape, and further providing the insulating film 15 with an opening to expose the metal, and in the organic layer forming process, the organic layer 10 is formed to come into contact with the metal in the opening. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a novel heterocycle-containing iridium complex compound which gives light emission in a green to blue region, and an electroluminescent device using this iridium complex which has a high efficiency and a long life. SOLUTION: The electroluminescent device has an organic layer 13 containing a heterocycle-containing iridium complex compound represented by the structural formula. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a display element and a display device whose light extraction efficiencies are raised. SOLUTION: An optical distance L 1 between the maximum light emission position 13E of a light emitting layer 13C and the first end portion P1 satisfies that L 1 =tL 1 +a 1 , (2tL 1 )/λ=-Φ 1 /(2π)+m 1 . An optical distance L 2 between the maximum light emission position 13E and the second end portion P2 satisfies that L 2 =tL 2 +a 2 , (2tL 2 )/λ=-Φ 2 /(2π)+m 2 . Herein, tL 1 is an optical distance in theory between the first end portion P1 and the maximum light emission position 13E, tL 2 is an optical theoretical distance between the second end portion P2 and the maximum light emission position 13E, a 1 and a 2 are correction values based on a light emission distribution in the light emitting layer 13C, λ is a peak wavelength of light spectra to be extracted, Φ 1 is the phase shifting of reflected light at the first end portion P1, Φ 2 is phase shifting of reflected light at the second end portion P2, and m 1 and m 2 are integers including zero. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a display device having a substrate 11, on which organic electroluminescent elements 10R, 10G, 10B are mounted, enabled to easily stick a driving panel 10, taking out light from the organic electroluminescent elements 10R, 10G, 10B side, to a sealing panel 21 whose color filter 22 is formed on a sealing panel 20. SOLUTION: The light transmission factor of a red color filter 22R and a blue light filter 22B are made not less than 10% at least at a part of wave length area of 300 nm-430 nm by selecting the material. The light transmission factor of a green color filter 22G at the above wave length area is 10% or less, and an ultraviolet ray transmission area is formed of an opening 22G1 or the like. By the above, a driving panel 10 and a sealing panel 20 can be easily stuck with each other through an adhesive 30 made of ultraviolet ray hardening resin by irradiating ultraviolet ray from the sealing panel 20 side.
Abstract:
PROBLEM TO BE SOLVED: To decrease angle of sight anaclisis of white with a self-luminous display element. SOLUTION: With the display element with a luminous layer 13c kept pinched between a first electrode 12 and a second electrode 15 and structured to be a resonant part of a resonator structure in which at least either the first electrode 12 or the second electrode 15 from which light is taken or the luminous layer 13c resonates light emitted from the luminous layer 13c, a peak wave length of an inner luminous spectrum of the luminous layer 13c and that of a multi-interference filter spectrum by the resonant part are made deviated from each other, and with this amount of deviation, an RGB balance of brightness change volume is adjusted with the angle of sight anaclisis in existence.
Abstract:
PROBLEM TO BE SOLVED: To improve light emitting efficiency in a display device for taking out the emitting light from the upper electrode side opposed to a substrate. SOLUTION: This display device has a light emitting element 102 by successively laminating a lower electrode 102a, an organic EL layer 102b, and an upper electrode 102c on the substrate 101, and a sealing film 103 formed on the substrate 101 in a state of contacting with the upper electrode 102c, and composed of a material having a refractive index lower than a refractive index of 3.5 and higher than a refractive index of the atmosphere. Thus, when emitting the emitting light h generated by the organic EL layer 102b from the upper electrode 102c side, the occurrence of reflection in an interface between the upper electrode 102c and the sealing film 103 can be prevented, and taking-out efficiency of the emitting light h can be improved.
Abstract:
PROBLEM TO BE SOLVED: To provide a top light taking type organic electroluminescent element reducing generation of leakage currents and having high reliability by reducing sputtering power during the initial period of deposition when forming a transparent conductive film on an upper cathode through sputtering, and by raising the power thereafter so that deposition by sputtering is made possible within a processing time such that the element can withstand production, for reducing damage to an organic layer on a bed. SOLUTION: The organic layer 10 of this organic electroluminescent element includes a luminescent layer which emits light through the recombination of holes supplied from an anode A with electrons supplied from a cathode K. To manufacture it, an anode formation process for forming the anode A on a substrate 1, an organic-layer formation process for forming the organic layer 10 on the anode A, a cathode formation process for forming on the organic layer 10 the cathode K in a thickness that enables light to pass therethrough, and a transparent conductive deposition process for depositing a transparent conductive film 12 by sputtering to cover the cathode K are effected. In the transparent conductive deposition process, the electric power required for sputtering is set at a low value during the initial period of film formation and is set to become higher as the deposition progresses.
Abstract:
PROBLEM TO BE SOLVED: To sufficiently deflect and focus electrons emitted by forming a part of a gate electrode outer than the edge of an emitter electrode and projecting part of the emitter electrode outer than the gate electrode. SOLUTION: An opening hole 7 is perforated in an almost square shape so as to pass through a first insulating layer 12, a first gate electrode 13, a second insulating layer 14, an emitter electrode 15, a third insulating layer 16, and a second gate electrode 17. An auxiliary electrode 11 is exposed at the bottom of the opening hole 7, part of the first gate electrode 13 is moved back outer than the opening edge 15a of the emitter electrode 15. Electric field intensity applied to the emitter electrode 15 in the moved back part is weakened, and emission of undesirable electrons is prevented. Electrons emitted from an electron emission device are sufficiently deflected and focused, effectively collide against a facing phosphor, and brightness is enhanced.
Abstract:
PURPOSE:To obtain a picture whose contrast is satisfactory at low cost by writing a same video signal based on one horizontal scanning period in a phase diffraction grating type write-valve by plural scanning lines. CONSTITUTION:The same video signal based on one horizontal scanning period T is written in a phase diffraction grating type write-value 1 by plural scanning lines (m)1 and (m)2. In this case, plural recesses/projections 13 and 14 are formed along the array directions of the scanning lines (m)1 and (m)2, on a reading-out face 12a of the phase diffraction grating type write-valve 1 according to the same video signal. Therefore, it is possible to improve the diffraction efficiency of a beam[a read-out beam (b)] from a schilieren optical series 2, which is diffracted and scattered at these recesses/projections 13 and 14. Thus, the picture whose contrast is satisfactory can cheaply be obtained on a screen 7.