Display device and speaker

A display device, comprising:

• a display configured to display an image on a display surface of the display;
• a rear cover on a rear side of the display;
• a first speaker between the display and the rear cover;
• and
• a second speaker between the display and the rear cover and positioned higher than the first speaker, wherein
• the second speaker is configured to output audio based on an operation of a piezoelectric element of the second speaker,
• the second speaker has a higher audio output band than the first speaker, and
• the second speaker includes:
• a case body that includes:
• a rear surface part,
• a side surface part continuous with a side edge of the rear surface part, wherein the side surface part is on a first side of the case body,
• a top surface part continuous with a top edge of the rear surface part,
• a bottom surface part continuous with a bottom edge of the rear surface part,
• an interior space as a disposition space,
• an audio passage hole, that communicates with the disposition space, wherein
• the audio passage hole is configured to pass the audio,
• the audio passage hole corresponds to an opening surrounded by the rear surface part, the top surface part, and the bottom surface part,
• the audio passage hole is on a second side of the case body opposite to the first side in a first direction, and
• a reinforcement part in a central part of the audio passage hole with respect to a second direction orthogonal to the first direction, and
• the piezoelectric element in the disposition space.