Display device

A display device includes: a display area including display pixels having an emission area; a peripheral area outside the display area, the peripheral area including a dam and a first test pixel between the display area and the dam and having an emission area; and an encapsulation layer in the display area and extending from the display area to the dam. An emission area of the first test pixels in the peripheral area is larger than an emission area of the display pixels in the display area. 一种显示装置包括：显示区，包括具有发射面积的显示像素；外围区，在显示区的外侧，外围区包括坝和在显示区与坝之间并且具有发射面积的第一测试像素；和封装层，在显示区中并且从显示区延伸到坝。外围区中的第一测试像素的发射面积大于显示区中的显示像素的发射面积。