Abstract:
PROBLEM TO BE SOLVED: To provide a display device extracting light from a second electrode side of which, contrast is heightened by suppressing the reflection of external light, capable of reducing cost by simplifying a manufacturing process, and to provide a manufacturing method of the same. SOLUTION: Organic light emitting elements 10R, 10G, and 10B which extract light from a negative electrode 15 side are formed on a substrate 11 for driving. A red filter 22R, a green filter 22G, and a blue filter 22B, facing the organic light emitting elements 10R, 10G, and 10B respectively, are formed on a substrate 21 for sealing by the printing method. By overlapping at least two filters out of the red filter 22R, the green filter 22G, and the blue filter 22B at the a boundary region of the organic light emitting elements 10R, 10G, and 10B by the printing method, a black matrix 23 is formed and the external light reflection caused by a wiring electrodes between the elements can be suppressed. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a color display device and a color organic EL(electroluminescence) display device having satisfactory chromacity by performing the color mixture of light emission in a correct ratio. SOLUTION: In the organic EL display device of a passive matrix system, currents Irg, Irb having a prescribed ratio are generated in current mirror circuit 32, 33 from the luminance signal current Iinr of red and the color mixture of the light emission of green color and the light emission of blue color is performed in the prescribed ratio to the light emission of red color based on an output current Ioutr by adding respectively these currents Irg, Irb to the current Igg based on the luminance signal current Iing of green and the current Ibb based on the luminance signal current Iinb of blue. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To aim improvement in luminescence characteristics by increasing the electron hole current of an organic EL element as an upper surface luminescence element. SOLUTION: The organic EL element is constituted by successively laminating a substrates 1, a positive pole 2 of optical reflection nature, an insulation film 3 that separates a luminescence domain, a thin-film layer 4 for hole injection of 1 into 10 nm film thickness, which consists of a material having work function larger than that of the positive pole 2, three organic layers of an hole injection layer 5, a hole transport layer 6, and a luminescence layer 7, and a negative pole 8 having optical permeability.
Abstract:
PROBLEM TO BE SOLVED: To provide an organic electroluminescent element provided with an effective positive electrode structure on the lower surface side for effectively extracting light from a negative electrode on the upper surface side. SOLUTION: This organic electroluminescent element comprises a positive electrode A, a negative electrode K and an organic layer 10 retained between them. The organic layer 10 includes an organic luminescent layer 103 for emitting light by the recombination of positive holes fed from the positive electrode A with electrons fed from the negative electrode K. The negative electrode K has a laminated structure of an extremely thin electron injection metal layer 11 and a transparent conductive layer 12, and is basically light-transmissive. The positive electrode A contains a metal belonging to the five or six group of the periodic table in at least a part abutting on the organic layer 10 and is basically light-reflective. The positive electrode metal is selected from chromium, molybdenum, tungsten, tantalum or niobium. The work function of the positive electrode metal is less than 4.8 eV.
Abstract:
PROBLEM TO BE SOLVED: To decrease a drive voltage of an edge type field emission element by improving a confinement effect of an electrolysis in an aperture part. SOLUTION: An electron emission layer 13, an insulation layer 14 and a gate electrode layer 15 are laminated on a supporting body 10 in this order. An aperture part 16 is provided which reaches the surface of the supporting body 10 from the gate electrode layer 15. The aperture part 16 comprises a first aperture part 15A provided in the gate electrode layer 15 and a second aperture part 14A provided at the insulation layer 14 and a third aperture part 13A provided at the electron emission layer 13. The first aperture part 15A and the second aperture part 14A and the third aperture part 13A are communicated with each other. An aperture end of the third aperture part 13A from which electrons are emited is retreated from an aperture end of the first aperture part 15A.
Abstract:
PROBLEM TO BE SOLVED: To execute patterning of high precision with less process steps. SOLUTION: This invention is provided with a stage in which plural evaporating sources S1 to S3 are arranged at prescribed intervals oppositely to a glass substrate 1 to be vapor-deposited, a stage in which a mask 2 in which slits 2a have been formed is arranged between the glass substrate 1 and the plural evaporating sources S1 to S3 and a stage in which evaporating materials are emitted from the plural evaporating sources S1 to S3, and each evaporating material is adhered to each different position on the glass substrate 1 via the slits 2a of the mask 2.
Abstract:
PROBLEM TO BE SOLVED: To improve the mechanical strength and to satisfactorily emit electrons, even at a high electric field by constituting the protruding part of a cathode electrode so as to have an inclined surface which is thinned toward the tip. SOLUTION: In a cathode electrode layer 10, an inclined surface 14 is formed on a protruding part 13 in order to reduce the radius of curvature of an opening end 10B. Therefore, since only the opening end 10B is made fine in the cathode electrode layer 10, and the other part is formed into a prescribed thickness, the cathode electrode layer 10 mechanically has high strength. As a result, although a dynamic force acts on the protruding part 13 of the cathode electrode layer 10, when the electric field generated from a first gate electrode layer 8 and a second gate electrode layer 12, the cathode electrode layer 10 will not break with respect to the force generated thus. Accordingly, this electron- emitting device can be operated even at a voltage which generates a large electric field.
Abstract:
PURPOSE: To decrease the dependency on the visual angle while maintaining resolution, luminance and contrast by forming a diffusing layer consisting of transparent beads and a light-absorbing member on the front side of a liquid crystal panel. CONSTITUTION: Two polarizing films 4a, 4b which hold a liquid crystal panel 3 are arranged in such a manner that the polarizing axis of the first polarizing film 4a in the front side of the liquid crystal panel 3 and the polarizing axis of the second polarizing film 4b in the back side of the panel 3 are perpendicular to each other. A diffusing layer 7 is formed in the front side over the first polarizing film 4a and has such a structure that transparent beads 11 are densely deposited to form one layer and the space in the front face of the bead layer is filled with a light-absorbing material 12. By forming the diffusing layer 7 comprising transparent beads 11 and light-absorbing material 12 in the front side of the liquid crystal panel 3, the light emitted from the liquid crystal panel 3 is diffused by the transparent beads 11 so that a good image for a wide visual angle can be given to the observer.
Abstract:
PURPOSE:To effectively utilize the advantage (there is no need for a process for erasing electric charges) of the type to apply an AC voltage of the projector for which a light valve is used and to inexpensively obtain images having a high resolution even without using fine working techniques of a high degree. CONSTITUTION:The projector A which has the light valve 1 formed with the light diffraction patterns complying with writing light W on a reading out surface 1b by incidence of the writing light W on the writing surface 1a, modulates the light by diffracting and scattering the light a from a light source 14 on a reading out optical system 3 side and projects the images to a screen 13 by the reading out optical system 3 in accordance with this light modulation is disposed with a pattern forming optical system 10 on the writing side of the light valve 1, generates, for example, speckle patterns SP on the writing surface 1a of the light valve 1 by this optical system 10 and previously forms the ruggedness complying with these speckle patterns SP on the reading out surface 1b of the light valve 1.
Abstract:
PROBLEM TO BE SOLVED: To provide an organic EL display device which reduces unevenness in the luminance of emitted light due to an increased size or heightened definition, thereby improving display quality.SOLUTION: The organic EL display device comprises an element substrate having an organic layer including a first electrode and an organic electroluminescent layer and a second electrode in that order on a first substrate and a counter substrate disposed oppositely to the element substrate via a sealing layer. The counter substrate includes a laminate layer composed of an inorganic light-shielding layer and a conductive layer which are each laminated on a second substrate, the conductive layer having lower resistance than the second electrode and being electrically connected to the second electrode on the element substrate. The inorganic light-shielding layer and the conductive layer can be formed into patterns with high accuracy, so that, even when the second electrode on the element substrate has high resistance, voltage drop arising therefrom is restricted.