Plasma display panel and rear plate for plasma display panel

A rear plate for a plasma display panel having a display region to generate a discharge between the rear plate and a front plate, and a non-display region provided around the display region, wherein

• the rear plate comprises a plurality of connection terminal parts, a plurality of middle connection wiring groups, a plurality of electrodes, a dummy part, and a barrier rib,
• the display region has the plurality of electrodes,
• the non-display region has the plurality of connection terminal parts, the plurality of middle connection wiring groups, and the plurality of dummy parts,
• one sides of the plurality of middle connection wiring groups are connected to the plurality of connection terminal parts,
• other sides of the plurality of middle connection wiring groups are connected to the plurality of electrodes,
• a region having the dummy part, and a region not having the dummy part are provided between the plurality of middle connection wiring groups,
• the barrier rib is provided in the display region and the non-display region,
• a lower layer of the barrier rib is disposed to the plurality of electrodes, at least one part of the plurality of middle connection wiring groups, and the dummy part, and
• in the non-display region, a difference between a reflection rate of a region having the middle connection wiring group and a reflection rate of the region having the dummy part is smaller than a difference between the reflection rate of the region having the middle connection wiring group and a reflection rate of the region not having the dummy part.