Patent ID: 7764011

Claim:
An electron emission display device comprising: first and second substrates facing each other; a plurality of cathode electrodes formed on the first substrate; a plurality of electron emission regions electrically connected to the cathode electrodes; and a plurality of red, green and blue phosphor layers formed on a surface of the second substrate facing the first substrate, with each cathode electrode being constructed with a first electrode having opened portions arranged at corresponding unit pixels defined on the first substrate having a same size, a second electrode being spaced apart from the first electrode and disposed within the opened portion, and a resistance layer disposed between the first and the second electrodes to electrically interconnect the first and second electrodes, and with the distances between the first and second electrodes corresponding to the red, green and blue phosphor layers being established to be proportional to the light emission efficiency of the corresponding red, green and blue phosphor layers, the light emission efficiencies of the red, green and blue phosphor layers are respectively indicated by E R , E G and E B , and the distances between the first and the second electrodes corresponding to the red, green and blue phosphor layers are respectively indicated by G R , G G , and G B , the values of E R , E G and E B and the values of G R , G G and G B being established to satisfy the following condition: E R :E G :E B =G R :G G :G B .