Abstract: Provided is an organic EL display device in which a large amount of a moisture absorbent is formed in a limited narrow region. An organic electroluminescence display device includes a rectangle element substrate having a display region; and a sealing substrate firmly adhered to the element substrate at a protrusion formed on the periphery thereof, in which a moisture absorbent is formed in a region of a concave surface surrounded by the protrusion so as not to overlap the display region, and the moisture absorbent includes moisture absorbents which are formed of a plurality of linear pattern set each joined to adjacent another moisture absorbents so as to be disposed in parallel with each other, and the crosssections of the moisture absorbents intersecting the longitudinal direction of the moisture absorbents are formed in the shape of a plurality of mounds joined to each other.

Abstract: A display device includes a first substrate having a display area with a plurality of pixels on a main surface and a first seal area formed at a periphery of the display area, and a second substrate disposed to cover the main surface of the first substrate, and having a second seal area at a part of the second substrate opposite to the first seal area. At least one driving circuit is arranged outside of the display area on the first substrate. The second substrate has a recessed portion formed at a part of the main surface of the second substrate within the second seal area, and a film coats the recessed portion and/or an outside of the second substrate. A moisture absorbent layer is arranged in the recessed portion so as to be adhered to the recessed portion or the film when the film coats the recessed portion.

Abstract: Provided is an organic EL display device in which a large amount of a moisture absorbent is formed in a limited narrow region. An organic electroluminescence display device includes a rectangle element substrate having a display region; and a sealing substrate firmly adhered to the element substrate at a protrusion formed on the periphery thereof, in which a moisture absorbent is formed in a region of a concave surface surrounded by the protrusion so as not to overlap the display region, and the moisture absorbent includes moisture absorbents which are formed of a plurality of linear pattern set each joined to adjacent another moisture absorbents so as to be disposed in parallel with each other, and the crosssections of the moisture absorbents intersecting the longitudinal direction of the moisture absorbents are formed in the shape of a plurality of mounds joined to each other.

Abstract: Inside surround desiccant pattern A surrounding an organic EL element by bonding an element substrate to a sealing board, outside surround desiccant pattern C surrounding the inside surround desiccant pattern A, and internal desiccant pattern (having a thinner film thickness than the inside surround desiccant pattern A) surrounded by the inside surround desiccant pattern A are formed on the sealing board by one time screen printing. For this purpose, a screen mask is utilized on which opening patterns for the inside and outside surround desiccant patterns A, C and an opening pattern having a narrower opening width than the opening patterns for A and C for forming an internal desiccant pattern are formed. With this configuration, it has been achieved to manufacture a highly reliable organic EL display apparatus in more simplified process.

Abstract: A display device includes a first substrate having a display area with a plurality of pixels on a main surface and a first seal area formed at a periphery of the display area, and a second substrate disposed to cover the main surface of the first substrate, and having a second seal area at a part of the second substrate opposite to the first seal area. At least one driving circuit which drives the plurality of pixels is arranged outside of the display area on the first substrate. The second substrate has a recessed portion formed at a part of the main surface of the second substrate within the second seal area, and a moisture absorbent layer having a light shielding property adheres to the recessed portion and is arranged to cover the display area and the at least one driving circuit.

Abstract: An OLED display device having a laminate encapsulating structure containing: an OLED substrate having a leading wire and a pixel area which carries a number of OLEDs on a glass substrate; and an encapsulating plate; and a filler filling a space between the OLED substrate and the encapsulating plate, wherein the filler is dispersed with a desiccant and fine metallic partides for improving electroconductivity and thermoconductivity. This structure not only can prevent an inflow of moisture into the OLEDs and secure a mechanical strength of the OLED display device as a flat panel display device, but also accelerate a heat radiation and improves electroconductivity of a conductive layer.

Abstract: Disclosed is an image display apparatus having a construction such that ultraviolet rays irradiated from a second substrate side are prevented from propagating through a first substrate to reach its display area by providing a picture-frame resin film for shielding ultraviolet rays on that area of the first substrate that is to be sealed to the second substrate with a sealant. Thereby, when the sealant for sealing the substrates is cured by irradiation of ultraviolet rays, photo deterioration of organic materials constituting emitting layered products and semiconductor layers constituting active elements both of which are formed on the display area may be prevented, and a high-reliability and high-performance image display apparatus may be realized.

Abstract: Inside surround desiccant pattern A surrounding an organic EL element by bonding an element substrate to a sealing board, outside surround desiccant pattern C surrounding the inside surround desiccant pattern A, and internal desiccant pattern (having a thinner film thickness than the inside surround desiccant pattern A) surrounded by the inside surround desiccant pattern A are formed on the sealing board by one time screen printing. For this purpose, a screen mask is utilized on which opening patterns for the inside and outside surround desiccant patterns A, C and an opening pattern having a narrower opening width than the opening patterns for A and C for forming an internal desiccant pattern are formed. With this configuration, it has been achieved to manufacture a highly reliable organic EL display apparatus in more simplified process.

Abstract: The present invention provides a display device which can realize the easy quality control of a display panel thus enhancing the quality and the reliability of the manufacturing of the display device. To achieve the object, the display device includes a light transmitting glass substrate SUB1 which has a display region AR formed of a pixel circuit in which a large number of display pixels SP each of which is constituted of a light emitting element and an active element are arranged in a matrix array on a main surface thereof; and a sealing glass substrate SUB2 which covers the main surface of the light transmitting glass substrate SUB1 and is hermetically sealed to a peripheral portion of the light transmitting glass substrate SUB1 with a sealing agent SEL therebetween. A dummy pixel DP which is constituted of a light emitting element and a passive element is arranged outside the display region AR on the main surface of the light transmitting glass substrate SUB1.

Abstract: An OLED display device having a laminate encapsulating structure containing: an OLED substrate having a leading wire and a pixel area which carries a number of OLEDs on a glass substrate; and an encapsulating plate; and a filler filling a space between the OLED substrate and the encapsulating plate, wherein the filler is dispersed with a desiccant and fine metallic particles for improving electroconductivity and thermoconductivity.

Abstract: Disclosed is an image display apparatus having a construction such that ultraviolet rays irradiated from a second substrate side are prevented from propagating through a first substrate to reach its display area by providing a picture-frame resin film for shielding ultraviolet rays on that area of the first substrate that is to be sealed to the second substrate with a sealant. Thereby, when the sealant for sealing the substrates is cured by irradiation of ultraviolet rays, photo deterioration of organic materials constituting emitting layered products and semiconductor layers constituting active elements both of which are formed on the display area may be prevented, and a high-reliability and high-performance image display apparatus may be realized.

Abstract: In a display device comprising a first substrate having a display area formed by arranging a plurality of pixels in a matrix manner and a driving circuit driving the plurality of pixels arranged outside of the display area both provided on a main surface thereof, a second substrate covering the main surface of the first substrate and stuck thereto at a seal material interposed between the first substrate and the second substrate which surrounds the display area and the driving circuit on the main surface of the first substrate, and a light emitting element and an active element being provided for each of the plurality of pixels, the present invention provides a light shielding layer covering both the display area and the driving circuit to prevent the display area and the driving circuit from being exposed to ultraviolet light incident on the second substrate with which the seal material is irradiated to be cured, and avoids deterioration of characteristics of the active elements in the display area and the d

Abstract: A polyimide precursor having repeating units of the formula: 1

Abstract: A polyimide precursor having repeating units of the formula: wherein R1 is a tetravalent organic group having 4 or more carbon atoms; R2 is a trivalent or tetravalent organic group having one or more aromatic rings; R3 is a monovalent organic group; A is a monovalent group showing acidity; and n is an integer of 1 or 2, is effective for preparing a highly sensitive negative-working photosensitive material developable with an alkaline aqueous solution in a short time with high resolution.

Abstract: The magnetic head assembly including a magnetic head having a terminal composed of a conductive film and a supporting spring. The supporting spring has interconnecting patterns (lines) on the top thereof and a projective electrode. The terminal of the magnetic head is electrically connected to the projective electrode of the supporting spring by a solderless, direct contact connection. The magnetic head is fixed to the supporting spring by using a non-electrical bonding agent. This structure makes it possible to stabilize the position of the magnetic head assembly and the relative speed variation between the magnetic head element and the magnetic disk, thereby enhancing the reliability of the magnetic disk apparatus.

Abstract: A polyimide precursor having repeating units of the formula: ##STR1## wherein R.sup.1 is a tetravalent organic group having 4 or more carbon atoms; R.sup.2 is a trivalent or tetravalent organic group having one or more aromatic rings; R.sup.3 is a monovalent organic group; A is a monovalent group showing acidity; and n is an integer of 1 or 2, is effective for preparing a highly sensitive negative-working photosensitive material developable with an alkaline aqueous solution in a short time with high resolution.

Abstract: A method of fabricating a thin-film magnetic in which a mask pattern in etching a bottom pole is formed of first and second mask films in this order when viewed from the bottom pole, the first mask film is used for defining, by self-alignment, the length of that portion of the side edge of a top pole which is nearly perpendicular to a magnetic gap, the second mask film makes it possible to etch the bottom pole with high dimensional accuracy, a non-magnetic film is formed on the mask pattern having the bottom pole thereunder and the exposed region of a substrate, and the top pole is formed after the mask pattern has been exposed and removed.

Abstract: A light-sensitive polymer composition comprising a poly(amic acid), a special bisazide compound and an amine compound can give a film which has high sensitivity and in which portions exposed to light are not easily released by a developing solution at the time of development.

Abstract: Heat-resistant silicone block polymer with a good flexibility obtained by reaction of an organosilsesquioxane with a silicone compound or organosiloxane in the presence of a basic catalyst in an organic solvent.

Abstract: There is described photosensitive polymer composition and a polyimide film-coated material made by applying the composition to a support, irradiating with ultraviolet and thereafter heating. The photosensitive polymer composition is prepared by adding a sensitizer to a photosensitive polyamide acid intermediate solution which is obtained by reacting in an inert solvent a first compound comprising 100 to 5% by weight of a photosensitive group-containing diamine and 0 to 95% by weight of a diamine having no photosensitive group, with a second compound comprising at least one compound selected from a tetracarboxylic acid dianhydride and a tricarboxylic acid anhydride monohalide.