An up-conversion laser unit in which a semiconductor laser of high output power can be used as a pump light source and the wavelength of up-converted laser light is suitable for display. An ATM switch A30 is provided to establish the ISDN line connecting with an ATM multiplexer A20 when any failure occurs in an ATM transmission path contacting with the ATM multiplexer A20. The second transparent conductive substrate with a top thereof has a plurality of second transparent conductive electrodes, and a second voltage difference in a second direction. This allows for the avatar to not only relate the application object to the supporting infrastructure objects, but also provides a view of how the application object is impacted whenever the supporting infrastructure objects change or break. Further, the capacity between the non-select word lines WL and the substrate can be neglected, and the occupancy ratio of the charge pump for use of supply of the negative voltage can be reduced by an extent corresponding to 90% or more of the conventional counterpart.