Abstract: A method for manufacturing a novel display apparatus is provided. The method includes a first step of forming a first electrode, a second electrode, and a first gap over an insulating film, a second step of forming a first film over the second electrode; a third step of forming a first layer overlapping with the first electrode, a fourth step of removing the first film by an etching method to form a first unit overlapping with the first electrode, a fifth step of removing a surface of the second electrode, a sixth step of forming a second film over the first layer and the second electrode, a seventh step of forming a second layer overlapping with the second electrode, and an eighth step of removing the second film by an etching method using the second layer to form a second unit overlapping with the second electrode and a second gap.

Abstract: In a gear (G1) according to the present invention, which is provided with a plurality of teeth (1) to be mated with teeth of a mating gear to thereby transmit a rotational motion, a predetermined region (A) in at least one tooth flank (7) of each tooth (1) is formed in a configuration such that, from at least one place in a tooth width direction on a crossing (8) of the tooth flank (7) and a tooth tip surface (3), the mating with the teeth of the mating gear is started with the point contact or the line contact shorter than the total tooth width, and thereafter, is gradually shifted to the line contact so that the length of contact line (10) thereof is sequentially increased as the line contact moves from a tooth tip surface (3) side toward a tooth root side.

Abstract: In a gear (G1) according to the present invention, which is provided with a plurality of teeth (1) to be mated with teeth of a mating gear to thereby transmit a rotational motion, a predetermined region (A) in at least one tooth flank (7) of each tooth (1) is formed in a configuration such that, from at least one place in a tooth width direction on a crossing (8) of the tooth flank (7) and a tooth tip surface (3), the mating with the teeth of the mating gear is started with the point contact or the line contact shorter than the total tooth width, and thereafter, is gradually shifted to the line contact so that the length of contact line (10) thereof is sequentially increased as the line contact moves from a tooth tip surface (3) side toward a tooth root side.

Abstract: In a gear G1 according to the present invention, which is provided with a plurality of teeth 1 to be mated with teeth of a mating gear to thereby transmit a rotational motion, a predetermined region A in at least one tooth flank 7 of each tooth 1 is formed in a configuration such that, from at least one place in a tooth width direction on a crossing 8 of the tooth flank 7 and a tooth tip surface 3, the mating with the teeth of the mating gear is started with the point contact or the line contact shorter than the total tooth width, and thereafter, is gradually shifted to the line contact so that the length of contact line 10 thereof is sequentially increased as the line contact moves from a tooth tip surface 3 side toward a tooth root side.