Abstract: A gas diffusion layer comprises a carbon sheet and a microporous layer disposed on at least one surface of the carbon sheet, and meeting the requirement “C is equal to or greater than 0”, wherein: C, referred to as “index for simultaneous realization of a required in-plane oxygen permeation coefficient and electrical resistance”, is calculated by subtracting the product of B multiplied by 60 from A and adding 310 to the difference, A, is the rate of oxygen permeation in an in-plane direction in a gas diffusion layer that occurs when a pressure of 0.5 MPa is applied in the through-plane direction to a surface of the gas diffusion layer to compress an arbitrarily selected region having a width of 10 mm and a depth of 3 mm in the gas diffusion layer, and B is the “electrical resistance” that occurs when the gas diffusion layer is compressed by applying a pressure of 2 MPa in the through-plane direction.

Abstract: A gas diffusion layer comprises a carbon sheet and a microporous layer disposed on at least one surface of the carbon sheet, and meeting the requirement “C is equal to or greater than 0”, wherein: C, referred to as “index for simultaneous realization of a required in-plane oxygen permeation coefficient and electrical resistance”, is calculated by subtracting the product of B multiplied by 60 from A and adding 310 to the difference, A, is the rate of oxygen permeation in an in-plane direction in a gas diffusion layer that occurs when a pressure of 0.5 MPa is applied in the through-plane direction to a surface of the gas diffusion layer to compress an arbitrarily selected region having a width of 10 mm and a depth of 3 mm in the gas diffusion layer, and B is the “electrical resistance” that occurs when the gas diffusion layer is compressed by applying a pressure of 2 MPa in the through-plane direction.

Abstract: A display device comprises: control circuit substrates disposed in a rear surface of a display panel, a control circuit that generates a control signal in order to control a data line driving circuit and a gate line driving circuit; gate connecting wirings; and a substrate connecting wiring, wherein each of the control circuit substrates includes: a first-side gate connecting part disposed on a first side; and a second-side substrate connecting part disposed on a second side, and the first-side gate connecting part and the second-side substrate connecting part are disposed so as not to overlap each other when the control circuit substrate is viewed in the first direction from the first side toward the second side.

Abstract: A display device comprises: control circuit substrates disposed in a rear surface of a display panel, a control circuit that generates a control signal in order to control a data line driving circuit and a gate line driving circuit; gate connecting wirings; and a substrate connecting wiring, wherein each of the control circuit substrates includes: a first-side gate connecting part disposed on a first side; and a second-side substrate connecting part disposed on a second side, and the first-side gate connecting part and the second-side substrate connecting part are disposed so as not to overlap each other when the control circuit substrate is viewed in the first direction from the first side toward the second side.

Abstract: Provided is a liquid crystal display device, including: a first analog power supply circuit that outputs, to each data signal line driving circuit, a first analog voltage generated based on a power supply voltage of an external power supply; a second analog power supply circuit that outputs a second analog voltage based on the first analog voltage; and a reference voltage generating circuit that generates a reference voltage based on the second analog voltage, in which the each data signal line driving circuit generates a gray-scale voltage based on the reference voltage.