Abstract: A common electrode driver includes an inverting amplifier including a first resistor, a second resistor, and an operational amplifier, and a resistance ratio adjustment circuit that adjusts, in accordance with a length of one horizontal scan period, a resistance ratio being a ratio of a resistance value of the second resistor to a resistance value of the first resistor. A feedback voltage is provided to one end of the first resistor. The resistance ratio adjustment circuit sets the resistance ratio when second driving is performed, in which a length of one horizontal scan period is a second time longer than a first time, to be smaller than the resistance ratio when first driving is performed, in which a length of one horizontal scan period is the first time.

Abstract: Compositions for forming polymer layers useful in the manufacture of optical devices, particularly optical waveguides, and methods of forming such devices are provided.

Abstract: The color purities of blue-green light and yellow or yellow-green light are enhanced. A light emitting device (100) configured to emit at least blue-green light and yellow or yellow-green light includes a substrate (51), an LED chip group, and a sealing resin part (50) collectively sealing the LED chip group, wherein the LED chip group at least includes a green LED chip (GB), a green LED chip (GY), a blue LED chip (B), and a red LED chip (R), and the green LED chip (GB) has a dominant wavelength shorter than a dominant wavelength of the green LED chip (GY).

Abstract: The color purities of blue-green light and yellow or yellow-green light are enhanced. A light emitting device (100) configured to emit at least blue-green light and yellow or yellow-green light includes a substrate (51), an LED chip group, and a sealing resin part (50) collectively sealing the LED chip group, wherein the LED chip group at least includes a green LED chip (GB), a green LED chip (GY), a blue LED chip (B), and a red LED chip (R), and the green LED chip (GB) has a dominant wavelength shorter than a dominant wavelength of the green LED chip (GY).

Abstract: A light emitting device has a lead frame which has a lead frame body and a plurality of bumper sections raised from the lead frame body. A rectangular case member with a hole is mounted to the lead frame. A light emitting element is placed in the hole of the case member, which is filled with a sealing resin that seals the light emitting element. The bumper sections are arranged on two opposite sides of the case member. Tip surfaces of the bumper sections are at a level higher than or equal to an upper end surface of the case member.

Abstract: An electronic device module includes a first substrate having a first wiring layer and a first alignment mark, the first alignment mark being transparent in a visible region of the electromagnetic spectrum, and a second substrate facing a part of the first substrate and having a second wiring layer and a second alignment mark facing the first alignment mark.

Abstract: A light emitting device has a lead frame which has a lead frame body and a plurality of bumper sections raised from the lead frame body. A rectangular case member with a hole is mounted to the lead frame. A light emitting element is placed in the hole of the case member, which is filled with a sealing resin that seals the light emitting element. The bumper sections are arranged on two opposite sides of the case member. Tip surfaces of the bumper sections are at a level higher than or equal to an upper end surface of the case member.

Abstract: An electronic device module includes a first substrate having a first wiring layer and a first alignment mark, the first alignment mark being transparent in a visible region of the electromagnetic spectrum, and a second substrate facing a part of the first substrate and having a second wiring layer and a second alignment mark facing the first alignment mark.

Abstract: The present invention provides a backlight capable of suppressing loss of light from an invisible light source and a displaying/imaging apparatus using the same. The backlight includes: a light guide plate having a light emitting face and a rear face opposed to the light emitting face; a visible light source disposed on a side face of the light guide plate; an invisible light source disposed on a side face of the light guide plate; a first reflection film disposed on the rear face side of the light guide plate, reflecting light from the visible light source, and transmitting light from the invisible light source; and a second reflection film disposed on the rear face side of the light guide plate and reflecting light from at least the invisible light source out of the visible light source and the invisible light source.

Abstract: The present invention provides a backlight capable of suppressing loss of light from an invisible light source and a displaying/imaging apparatus using the same. The backlight includes: a light guide plate having a light emitting face and a rear face opposed to the light emitting face; a visible light source disposed on a side face of the light guide plate; an invisible light source disposed on a side face of the light guide plate; a first reflection film disposed on the rear face side of the light guide plate, reflecting light from the visible light source, and transmitting light from the invisible light source; and a second reflection film disposed on the rear face side of the light guide plate and reflecting light from at least the invisible light source out of the visible light source and the invisible light source.

Abstract: The present invention relates to new methods for manufacturing electronic packaging devices, particularly printed circuit boards. Methods of the invention include use of reduced pH sweller and etch treatments that can produce printed circuit boards and other devices that are substantially more robust and reliable than produced by prior methods.