Patent ID: 6967442

Claim:
A plasma display device comprising: a plurality of pairs of discharge sustain electrodes formed on the inner side of a first substrate in such a manner as to extend along a first direction while being nearly in parallel to each other; a dielectric layer formed on the inner side of said first substrate in such a manner as to cover said discharge sustain electrodes; and barrier ribs formed on the inner side of a second substrate in such a manner as to form discharge spaces sealed between said first substrate and said second substrate; wherein said barrier ribs have vertical ribs extending along a second direction different from said first direction while being nearly in parallel to each other, and lateral ribs extending along said first direction while being nearly in parallel to each other; notches for communicating spaces surrounded by said vertical ribs and said lateral ribs to each other along at least one of said first direction and said second direction are formed at least in portions of at least one of said vertical ribs and said lateral ribs; and each of said lateral ribs is composed of two or more rows of lateral rib elements, wherein said notch is formed in each of said two or more rows of lateral rib elements of said lateral rib; wherein said notches formed in said lateral rib elements adjacent to each other are located at positions where said notches are not continuous to each other but are offset from each other as seen along said second direction; wherein the width of said notch in said first direction is in a range of ½ to 1 times the width of said vertical rib of said barrier rib; and wherein said discharge sustain electrodes are formed from a transparent conductive material.