Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A large screen display suitable for displaying moving images has a high operational property and is realized at low cost. A vertically aligned mode liquid crystal display comprises a scan wiring, a video signal wiring, a pixel electrode, an alignment directional control electrode, and a thin film transistor element formed in a position where a scan wiring and a video signal wiring intersect with each other, and a common electrode formed in a color filter substrate side. An electric field distribution formed with three electrodes comprising an alignment directional control electrode, a pixel electrode, and a common electrode formed in an countering substrate side controls motion directions of vertically aligned anisotropic liquid crystal molecules having a negative dielectric constant.

Abstract: A big screen display suitable for moving image displaying that has an excellent viewing angle property, an excellent reliability and a productivity, and a quick speed of response, and has a bright and excellent contrast is realized at low cost. Vertically aligned mode liquid crystal display comprises a scan wiring, a video signal wiring, a pixel electrode, an alignment directional control electrode, and a thin film transistor element formed in a position where a scan wiring and a video signal wiring intersect with each other, and a common electrode formed in opposing substrate side. An electric field distribution formed with three electrodes comprising an alignment directional control electrode, and a pixel electrode, and a common electrode formed in an countering substrate side may control motion directions of vertically aligned anisotropic liquid crystal molecules having a negative dielectric constant.

Abstract: A method decreases the time and cost for producing an active matrix substrate of a liquid crystal display device. The method includes steps of forming patterns for scanning lines, separating silicon elements for thin film transistors from a semiconductor layer, forming video signal lines and liquid crystal drive electrodes at the same time, forming spacer bumps or spacers and insulation bumps at the same time via a halftone exposure process thereby creating a taper angle of less than 30 degrees at each edge of the bump, forming contact holes, and forming transparent common electrodes for shielding the video signal line and transparent common electrodes within pixels at the same time. The halftone exposure process utilizes a light transmission adjustable photomask having a translucent area or conducts a two-step exposure process by utilizing a normal photomask.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A big screen display suitable for moving image displaying that has an excellent viewing angle property, an excellent reliability and a productivity, and a quick speed of response, and has a bright and excellent contrast is realized at low cost. Vertically aligned mode liquid crystal display comprises a scan wiring, a video signal wiring, a pixel electrode, an alignment directional control electrode, and a thin film transistor element formed in a position where a scan wiring and a video signal wiring intersect with each other, and a common electrode formed in opposing substrate side. An electric field distribution formed with three electrodes comprising an alignment directional control electrode, and a pixel electrode, and a common electrode formed in an countering substrate side may control motion directions of vertically aligned anisotropic liquid crystal molecules having a negative dielectric constant.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, where a halftone photomask has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which is formed on the portion of the substrate. The halftone mask further has a fully light-transmitting area which permits full UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed. Also disclosed is a scan-exposing device used in the manufacturing process.

Abstract: An active matrix type liquid crystal display device where display pixels are constituted on a substrate by scanning signal lines, video signal lines, pixel electrodes, common electrodes and active elements in order to obtain an image having good visual field angle characteristics and a high display quality with less residual image. The substrate is opposed to another substrate having a color filter forming a liquid crystal alignment film, and the liquid crystal layer is held by the two substrates. The electrodes and the active elements are so constituted that an electric field can be applied to the liquid crystal layer substantially in parallel with the substrate. The video signal lines, the common electrodes and the pixel electrodes are bent within a range of 60 to 120 degrees relative to the direction of liquid crystal alignment.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A large screen liquid crystal display device using a transverse electric field system which is capable of dramatically improving an aperture ratio, a transmittance ratio, brightness, and contrast with low cost and high production yield. For example, the width of the common electrodes that shield the electric fields of the video signal lines can be decreased dramatically and the aperture ratio can be improved dramatically. Especially, the bumps covering the video signal lines can be used along with the spacers, and with the use of halftone exposure method, the bumps covering the video signal lines and the spacers can be constructed at the same time, which dramatically shortens the time required for the production process.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: A process of manufacturing a liquid crystal display device of transverse electric-field type, wherein a halftone photomask which is used to form a photoresist pattern has a fully light-shielding area preventing UV irradiation of a portion of an active matrix substrate in which a thin-film transistor element is to be formed, so that the photoresist pattern includes a positive resist portion which has a first thickness and which is formed on the above-indicated portion of the substrate. The halftone mask further has a fully light-transmitting area which permits fully UV transmission therethrough to provide the photoresist pattern with a resist-free area which corresponds to a portion of the substrate in which a contact hole serving as a third connection portion connecting an external scanning-line driver circuit and a scanning-line terminal portion through a junction electrode is to be formed.

Abstract: An active matrix liquid crystal display device with a transverse electric field type with low power and cost as well as improved display quality such as a large visual field angle and high contrast and brightness. The active matrix type liquid crystal display device of a transverse electric field system is comprised of two common electrodes running in parallel with one another in each pixel wherein the common electrodes are separated from one another and respectively provided with different voltages.