A light emitting device (10) includes a hole injection layer (121), a hole transport layer (122), and a light emitting layer (123). The hole transport layer (122) includes a first organic layer (122a), a second organic layer (122b), and a third organic layer (122c). The first organic layer (122a) is formed on the hole injection layer (121) and includes a first hole transporting material. The second organic layer (122b) is formed on the first organic layer (122a) and includes a second hole transporting material. The third organic layer (122c) is formed on the second organic layer (122b) and includes the second hole transporting material. The second organic layer (122b) is formed by using a coating method, and the third organic layer (122c) is formed by a vapor deposition method.

The present application relates to an optical filter and an organic light-emitting display device. The optical filter of the present application has excellent omnidirectional antireflection performance and color characteristics on the side as well as the front, and the optical filter can be applied to an organic light-emitting device to improve visibility.

The display device includes a substrate, a display region arranged on the substrate and including a plurality of pixels, a first wiring provided on the substrate, an insulating layer overlapping a portion of the first wiring, an oxide conductive layer provided on the first wiring and electrically connected to the first wiring, a sealing layer overlapping the display region and at least an end of the oxide conductive layer and sealing the plurality of pixels, a sensor electrode provided on the sealing layer and overlapping the display region, and a second wiring passing over the at least end of the oxide conductive layer provided with the sealing layer and electrically connecting the sensor electrode and the oxide conductive layer.

The invention relates to a method for producing an LED tape, comprising the following steps: producing an elastic base profile (1) and rolling up the elastic base profile (1) onto a first roll (11); producing an LED strip (323) comprising a flexible conductor tape (flexible PCB) (32) populated with LED chips (3) and rolling up the LED strip (323) onto a second roll (33); unrolling the base profile (1) from the first roll (11); unrolling the LED strip (323) from the second roll (33) and inserting the LED strip (323) into the base profile (1) and covering the LED strip (323) in the base profile (1) with a potting compound (2) and/or with a covering profile (7). The invention also relates to an LED tape in which a rollable LED strip (323) which has a flexible conductor tape (flexible PCB) (32) populated with LED chips (3) is fixed in a rollable elastic base profile (1) and is covered with a potting compound (2) and/or an in particular rollable, covering profile (7). The invention also relates to an LED strip (323) in which the flexible conductor tape (32) is corrugated in its longitudinal direction (L).

A luminescent film includes a host compound, a blue phosphorescent compound, and a blue fluorescent compound, in which an emission spectrum of the blue phosphorescent compound and an absorption spectrum of the blue fluorescent compound have portions overlapping with each other; shortest wavelength-side maximum emission wavelengths of the blue phosphorescent compound (abbreviated as “BPM” in the expression) and the blue fluorescent compound (abbreviated as “BFM” in the expression) satisfy the following expression (1): λ.sub.BFM≥λ.sub.BPM: expression (1) in which λ.sub.BFM represents the shortest wavelength-side maximum emission wavelength of the blue fluorescent compound and λ.sub.BPM represents the shortest wavelength-side maximum emission wavelength of the blue phosphorescent compound; and light emission derived from the blue fluorescent compound is detected.

A luminescent film includes a host compound, a blue phosphorescent compound, and a blue fluorescent compound, in which an emission spectrum of the blue phosphorescent compound and an absorption spectrum of the blue fluorescent compound have portions overlapping with each other; shortest wavelength-side maximum emission wavelengths of the blue phosphorescent compound (abbreviated as “BPM” in the expression) and the blue fluorescent compound (abbreviated as “BFM” in the expression) satisfy the following expression (1): λ.sub.BFM≥λ.sub.BPM: expression (1) in which λ.sub.BFM represents the shortest wavelength-side maximum emission wavelength of the blue fluorescent compound and λ.sub.BPM represents the shortest wavelength-side maximum emission wavelength of the blue phosphorescent compound; and light emission derived from the blue fluorescent compound is detected.

The present invention addresses the problem of providing a manufacturing method for an electronic device that is provided with an organic thin film functioning as a sealing film against moisture permeation in an electronic device such as an organic electroluminescence element. This manufacturing method for an electronic device is a manufacturing method for an electronic device that has at least an organic functional layer, an elution prevention film, and a sealing film in this order, said manufacturing method being characterized by having: a step in which, after coating is performed with a silicone resin, the result is irradiated with vacuum ultraviolet rays to form the elution prevention film; and a step in which, after the elution prevention film is coated with a liquid mixture of a metal alkoxide and a fluoroalcohol, the result is irradiated with vacuum ultraviolet rays to form the ultraviolet rays to form the sealing film.

The present invention addresses the problem of providing a manufacturing method for an electronic device that is provided with an organic thin film functioning as a sealing film against moisture permeation in an electronic device such as an organic electroluminescence element. This manufacturing method for an electronic device is a manufacturing method for an electronic device that has at least an organic functional layer, an elution prevention film, and a sealing film in this order, said manufacturing method being characterized by having: a step in which, after coating is performed with a silicone resin, the result is irradiated with vacuum ultraviolet rays to form the elution prevention film; and a step in which, after the elution prevention film is coated with a liquid mixture of a metal alkoxide and a fluoroalcohol, the result is irradiated with vacuum ultraviolet rays to form the ultraviolet rays to form the sealing film.

A technique is provided that improves the efficiency of electron and hole injection in a light-emitting element containing quantum dots in a light-emitting layer thereof and hence improves the luminous efficiency thereof The light-emitting element includes on a substrate: a positive electrode; a negative electrode; a quantum-dot layer between the positive electrode and the negative electrode, the quantum-dot layer including a stack of a plurality of luminous, first quantum dots and a plurality of non-luminous, second quantum dots; a hole transport layer between the positive electrode and the quantum-dot layer; and an electron transport layer between the negative electrode and the quantum-dot layer, the plurality of second quantum dots being more numerous in an electron transport layer side than in a hole transport layer side.

A display device includes: a first substrate that includes a semiconductor material layer in which a transistor has been formed, the transistor driving a light-emitting part that is included in a pixel; and a second substrate that includes a predetermined circuit. The first substrate and the second substrate are stuck together in such a way that respective joint surfaces face each other. A pad opening is provided from a side of the first substrate to face a pad electrode that has been provided on a side of the respective joint surfaces, in such a way that the pad electrode is exposed on a bottom surface.