Abstract: The present invention provides a method for producing a substrate with a photo-alignment film, which increases the refractive index anisotropy while reducing a decrease in production efficiency. The method for producing a substrate with a photo-alignment film includes the steps of: (A) forming on a surface of a substrate a film of a photo-alignment film material containing a polymer with a photo-functional group; (B) irradiating the film formed in the step (A) with polarized light obtained by polarizing light emitted from a light emitting diode lamp; and (C) irradiating the film having been subjected to the polarized light irradiation in the step (B) with polarized light obtained by polarizing light emitted from a metal halide lamp.

Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, and a main sealing portion. The second substrate opposes the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The main sealing portion is disposed in a circular shape to surround the liquid crystal layer and assembles the first substrate and the second substrate together to seal the liquid crystal layer between the substrates. A distance between opposing surfaces of the first substrate and the second substrate in a main attachment region of the substrates where the main sealing portion is disposed is smaller at an innermost peripheral portion than at the other portions.

Abstract: A method of producing liquid crystal display panels includes a sealing material application step of applying sealing material on a first substrate to define regions, a vacuum assembling step of assembling a second substrate to the first substrate in a vacuum, an atmospheric pressure pressing step of pressing the first substrate and the second substrate under atmospheric pressure, an ultraviolet curing step of irradiating ultraviolet rays to the sealing material, a thermal curing step of heating the sealing material, a cutting step of cutting the assembled first and second substrates into pieces for each of the regions that are defined by the sealing material and forming pairs of substrates each of which including the region surrounded by the sealing material, and a liquid crystal injecting step of injecting liquid crystals. In the sealing material application step, the sealing material that defines the regions is applied in a closed loop form.

Abstract: The present invention provides a liquid crystal display device in which display unevenness is reduced in an edge portion of a display region and the forming position of an alignment film is suitably adjusted. A liquid crystal display device includes: a display region for displaying an image; a frame region surrounding the display region; a first substrate including an insulating substrate; a second substrate facing the first substrate; a liquid crystal layer between the first substrate and the second substrate; and an alignment film on a liquid crystal layer side of the insulating substrate, the first substrate in a plan view including a groove extending to surround the display region, the groove including a first side wall on a display region side and a second side wall on a side remote from the display region, the first side wall having a smaller inclination than the second side wall.

Abstract: The present invention provides a liquid crystal display device in which display unevenness is reduced in an edge portion of a display region and the forming position of an alignment film is suitably adjusted. A liquid crystal display device includes: a display region for displaying an image; a frame region surrounding the display region; a first substrate including an insulating substrate; a second substrate facing the first substrate; a liquid crystal layer between the first substrate and the second substrate; and an alignment film on a liquid crystal layer side of the insulating substrate, the first substrate in a plan view including a groove extending to surround the display region, the groove including a first side wall on a display region side and a second side wall on a side remote from the display region, the first side wall having a smaller inclination than the second side wall.

Abstract: The liquid crystal display device according to the present invention includes: a thin-film transistor substrate, wherein the thin-film transistor substrate includes an organic insulating film disposed on a drain electrode and provided with a contact hole, the contact hole includes first, second, third, and fourth side wall portions in the given order, an inclination of an upper portion of the second side wall portion is gentler than an inclination of an upper portion of each of the first and third side wall portions, and the contact hole satisfies W2>L, wherein L is a distance from an upper end of the first side wall portion to an upper end of the third side wall portion on a first straight line, and W2 is a maximum distance between one and another upper end of the second side wall portion on a third straight line parallel to the first straight line.

Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, and a main sealing portion. The second substrate opposes the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The main sealing portion is disposed in a circular shape to surround the liquid crystal layer and assembles the first substrate and the second substrate together to seal the liquid crystal layer between the substrates. A distance between opposing surfaces of the first substrate and the second substrate in a main attachment region of the substrates where the main sealing portion is disposed is smaller at an innermost peripheral portion than at the other portions.

Abstract: Provided is a polarized light irradiation apparatus for exposure of a photosensitive film on a substrate. The polarized light irradiation apparatus includes: a transport stage including a stage surface that is reciprocated in a state where the substrate is placed on the stage surface and a heating mechanism that heats the substrate placed on the stage surface; and a polarized light irradiation mechanism irradiates the stage surface moving in an exposure region with polarized light. The transport stage moves in the exposure region at a first average speed in a forward path while heating the substrate by the heating mechanism. The transport stage moves in the exposure region at a second average speed lower than the first average speed in a backward path while heating the substrate by the heating mechanism.

Abstract: A method of producing liquid crystal display panels includes a sealing material application step of applying sealing material on a first substrate to define regions, a vacuum assembling step of assembling a second substrate to the first substrate in a vacuum, an atmospheric pressure pressing step of pressing the first substrate and the second substrate under atmospheric pressure, an ultraviolet curing step of irradiating ultraviolet rays to the sealing material, a thermal curing step of heating the sealing material, a cutting step of cutting the assembled first and second substrates into pieces for each of the regions that are defined by the sealing material and forming pairs of substrates each of which including the region surrounded by the sealing material, and a liquid crystal injecting step of injecting liquid crystals. In the sealing material application step, the sealing material that defines the regions is applied in a closed loop form.

Abstract: The present invention provides a method for producing a substrate with a photo-alignment film, which increases the refractive index anisotropy while reducing a decrease in production efficiency. The method for producing a substrate with a photo-alignment film includes the steps of: (A) forming on a surface of a substrate a film of a photo-alignment film material containing a polymer with a photo-functional group; (B) irradiating the film formed in the step (A) with polarized light obtained by polarizing light emitted from a light emitting diode lamp; and (C) irradiating the film having been subjected to the polarized light irradiation in the step (B) with polarized light obtained by polarizing light emitted from a metal halide lamp.

Abstract: A method of producing a glass substrate for a liquid crystal display device includes a cleaning process of cleaning a substrate after performing a rubbing treatment on the substrate to align liquid crystal molecules. In the cleaning process, a position of a first cleaning material supply unit that supplies water-based cleaning material to the substrate on which a film of pretreatment material is disposed and that is transferred in a transferring direction is adjusted according to a film forming amount of the pretreatment material disposed on the substrate and transfer speed of the substrate.

Abstract: A method of producing an array substrate including an alignment film includes a thin film transistor forming process, a pixel electrode forming process, an alignment film forming process of forming an alignment film to cover the thin film transistor and the pixel electrode formed on the substrate, and a rubbing process of rubbing the alignment film sequentially with a first rubbing roller and a second rubbing roller that have a columnar shape having a rotation shaft parallel to the substrate. First rubbing material on an outer periphery of the first rubbing roller has relatively higher bounce and resilience than those of second rubbing material on an outer periphery of the second rubbing roller, and the first rubbing roller and the second rubbing roller are rotated in a direction so as to push out the substrate in a relatively forwarding direction of the substrate.

Abstract: A method of producing a color filter substrate including an alignment film includes a color filter forming process, a photo spacer forming process, an alignment film forming process of forming an alignment film to cover the color filters and the photo spacer on the substrate, and a rubbing process of rubbing the alignment film sequentially with a first rubbing roller and a second rubbing roller having a columnar shape with a rotation shaft parallel to the substrate. The first rubbing roller is rotated in a direction to push back the substrate with respect to a forwarding direction of the substrate and the second rubbing roller is rotated in a direction to relatively push out the substrate, and second rubbing material on an outer periphery of the second rubbing roller has relatively lower bounce and resilience than those of first rubbing material on an outer periphery of the first rubbing roller.

Abstract: A method of producing a display panel using a seal dispenser including a nozzle and discharging sealing material onto the substrate, the sealing material applied onto the substrate having a sealing material cross-sectional area cut along a plane orthogonal to a nozzle moving direction and a spacing between the substrate and a tip of the nozzle being defined as a nozzle gap. The method includes a determining step of determining the nozzle diameter and the nozzle gap corresponding to the target sealing material cross-sectional area based on a linear function that approximates a relationship between a product of a nozzle diameter and the nozzle gap and the sealing material cross-sectional area, and a sealing material applying step executed after the determining step and applying the sealing material onto the substrate through the nozzle having the nozzle diameter determined in the determining step while maintaining the nozzle gap determined in the determining step.

Abstract: [Object] An object is to provide a liquid crystal display panel in which a decrease in display quality is reduced. [Solution] A liquid crystal display panel 10 includes an array substrate 30 including an array-substrate transparent substrate 31, a CF substrate 20 including a CF-substrate transparent substrate 21, and a sealing portion 50 bonding the substrates 20 and 30 together to seal a liquid crystal layer 40. The liquid crystal display panel 10 is separated from liquid crystal display panel body component 10M including rows of liquid crystal display panels 10 connected to each other with a dummy area DA therebetween. In the liquid crystal display panel body component 10M, a cell gap (distance between plate surfaces of an array-substrate mother transparent substrate 31M and a CF-substrate mother transparent substrate 21M) in a dummy attachment region DR of the dummy area DA having a dummy sealing portion 60 is larger than that in a main attachment region SR having the main sealing portion 50 (GDR>GSR).

Abstract: A method of producing a substrate for a liquid crystal display device includes a cleaning step of, after performing a rubbing process for aligning liquid crystal molecules on a substrate, performing a cleaning process for the substrate. When the substrate is cleaned with an aqueous cleaner that flows along a conveying direction of the substrate, the supplying pressure of the aqueous cleaner is controlled to be smaller in a case where a rubbing process direction of the substrate and the conveying direction intersect than in a case where the rubbing process direction of the substrate and the conveying direction are along each other.

Abstract: The liquid crystal display device according to the present invention includes: a thin-film transistor substrate, wherein the thin-film transistor substrate includes an organic insulating film disposed on a drain electrode and provided with a contact hole, the contact hole includes first, second, third, and fourth side wall portions in the given order, an inclination of an upper portion of the second side wall portion is gentler than an inclination of an upper portion of each of the first and third side wall portions, and the contact hole satisfies W2>L, wherein L is a distance from an upper end of the first side wall portion to an upper end of the third side wall portion on a first straight line, and W2 is a maximum distance between one and another upper end of the second side wall portion on a third straight line parallel to the first straight line.

Abstract: The present invention provides a liquid crystal module capable of reducing image sticking even in long-term use. The liquid crystal module includes, in the following order from a back surface side, a backlight configured to emit light including visible light, a polarizing plate, a first substrate, a liquid crystal layer, and a second substrate, the liquid crystal module further including: a heat-insulating layer at least at one position selected from between the backlight and the polarizing plate and between the polarizing plate and the first substrate; and an alignment film containing an azobenzene group on a liquid crystal layer side of at least one of the first substrate or the second substrate.

Abstract: The present invention provides a method for producing a substrate provided with an alignment film whose refractive index anisotropy is less likely to change and can be maintained at a high level even during long-term use. The method for producing a substrate provided with an alignment film includes: a film coating step in which an alignment film composition is applied to a surface of a substrate to form a film, the alignment film composition containing a first polymer that contains an azobenzene group in a main chain thereof; and a heating and exposure step in which the film is irradiated with light while the substrate is heated at 60° C. to 80° C. The light applied in the heating and exposure step is preferably within a wavelength range of 320 to 500 nm.

Abstract: A method of producing a printed substrate includes rotating an anilox roll having first recesses supplied with a coating liquid, rotating a plate cylinder fitted with a printing plate having second recesses, transferring the coating liquid from the first recesses to the second recesses and holding the coating liquid in the second recesses, and rotating the plate cylinder while keeping the outer surface of the printing plate in contact with a printed substrate to transfer the coating liquid held in the second recesses to the printed substrate. A ratio of a maximum volume of the coating liquid held by the second recesses per unit area on the outer surface of the printing plate to a maximum volume of the coating liquid held by the first recesses per unit area on the outer surface of the anilox roll ranges from 0.50 to 2.00.