Patent Number: 
Section: claims

1. A method of correcting a magnification of a mask pattern formed on a mask substrate, said method comprising the steps of: applying forces to four pressurizing points of an outer periphery of an approximately ring-shaped frame, which supports the mask substrate and has a rectangular window, on substantially extended lines of two diagonal lines of the rectangular window; and  adjusting at least an angle, to the extended lines, of a vector of the forces applied to each of the pressurizing points. 2. The method according to  claim 1 , wherein claim 1 for at least some of the pressurizing points, pressurizing points are set for pressurizing in two directions perpendicular to each other, and  for at least some of the vectors of the forces, the force is decomposed in X- and Y-axis directions parallel to sides of the rectangular window and applied to the frame. 3. The method according to  claim 1 , further comprising applying the force to the frame through a rolling contactable portion. claim 1 4. The method according to  claim 1 , wherein some of the pressurizing points are set as fixed points. claim 1 5. The method according to  claim 4 , further comprising providing a receiving mechanism that receives the fixed point, a respective receiving mechanism for at least some of the fixed points having a slide function. claim 4 6. A device manufacturing method comprising the steps of: correcting a magnification of a mask pattern formed on a mask substrate by applying forces to four pressurizing points of an outer periphery of an approximately ring-shaped frame, which supports the mask substrate and has a rectangular window, on substantially extended lines of two diagonal lines of the rectangular window, and by adjusting at least an angle to the extended lines of a vector of the forces applied to each of the pressurizing points; and  transferring the mask pattern onto a photosensitive substrate. 7. A mask pattern manufacturing method comprising the step of: applying forces to four pressurizing points of an outer periphery of an approximately ring-shaped frame, which supports a mask substrate and has a rectangular window, on substantially extended lines of two diagonal lines of the rectangular window;  adjusting at least an angle, to the extended lines, of a vector of the forces applied to each of the pressurizing points; and  drawing a pattern while keeping a membrane distorted by a predetermined force. 8. An exposure apparatus which transfers the mask pattern, which is manufactured by the method according to  claim 7 , onto a photosensitive substrate. claim 7 9. The apparatus according to  claim 8 , further comprising claim 8 a display;  a network interface; and  a computer which executes network software,  wherein maintenance information of the exposure apparatus is exchanged through a computer network by data communication. 10. The apparatus according to  claim 9 , wherein the network software provides, on said display, a user interface connected to an external network outside a factory in which the exposure apparatus is installed to access a maintenance database provided by a vendor or user of the exposure apparatus and allows obtaining information from the database through the external network. claim 9 11. A semiconductor device manufacturing method using the exposure apparatus according to  claim 8 , said method comprising the steps of: claim 8 installing, in a semiconductor factory, manufacturing apparatuses for performing various processes; and  manufacturing a semiconductor device using the manufacturing apparatuses by performing a plurality of processes. 12. The method according to  claim 11 , further comprising the steps of: claim 11 connecting the manufacturing apparatuses through a local area network; and  exchanging information related to at least one of the manufacturing apparatuses between the local area network and an external network outside the semiconductor manufacturing factory by data communication. 13. The method according to  claim 12 , further comprising performing one of (i) obtaining maintenance information of the manufacturing apparatus by accessing, through an external network, a database provided by a vendor or user of the exposure apparatus by data communication, and (ii) production management by data communication with a semiconductor manufacturing factory different from the semiconductor manufacturing factory through the external network. claim 12 14. A maintenance method for the exposure apparatus according to  claim 8 , which is installed in a semiconductor manufacturing factory, said method comprising the steps of: claim 8 causing a vendor or user of the exposure apparatus to provide a maintenance database connected to an external network outside the semiconductor manufacturing factory;  permitting access from the semiconductor manufacturing factory to the maintenance database through the external network; and  transmitting maintenance information accumulated in the database to the semiconductor manufacturing factory side through the external network. 15. An apparatus for correcting a magnification of a mask pattern formed on a mask substrate, said apparatus comprising: a pressurizing mechanism which applies forces to four pressurizing portions of an outer periphery of an approximately ring-shaped frame, which supports the mask substrate and has a rectangular window, on substantially extended lines of two diagonal lines of the rectangular window,  wherein at least an angle, to the extended lines, of a vector of the forces applied to each of the pressurizing portions by said pressurizing mechanism is adjustable. 16. The apparatus according to  claim 15 , wherein claim 15 for at least some of the pressurizing portions, pressurizing portions are set for pressurizing in two directions perpendicular to each other, and  for at least some of the vectors of the forces, the force is decomposed in X- and Y-axis directions parallel to sides of the rectangular window and applied to the frame. 17. The apparatus according to  claim 15 , wherein the force is applied to the frame through a rolling contactable portion. claim 15 18. The apparatus according to  claim 15 , wherein some of the pressurizing portions are fixed. claim 15 19. The apparatus according to  claim 18 , further comprising a receiving mechanism that receives the fixed portion, the receiving mechanism for at least some of the fixed portions having a slide function. claim 18 20. A semiconductor manufacturing factory comprising: manufacturing apparatuses for performing various processes, including an exposure apparatus which transfers a mask pattern onto a photosensitive substrate using a mask pattern manufactured by applying forces to four pressurizing points of an outer periphery of an approximately ring-shaped frame, which supports a mask substrate and has a rectangular window, on substantially extended lines of two diagonal lines of the rectangular window, adjusting at least an angle, to the extended lines, of a vector of the forces applied to each of the pressurizing points, and drawing a pattern while keeping a membrane distorted by a predetermined force;  a local area network which connects the manufacturing apparatuses; and  a gateway which allows the local area network to access an external network outside the factory,  wherein information related to at least one of the manufacturing apparatuses is exchanged by data communication.