DISPLAY DEVICE AND HEAD-UP DISPLAY
A display device according to the present disclosure includes a display member, a light transmission member, a light diffusion member, and a plurality of protrusions. The display member has a display surface. The light transmission member is disposed on the display surface side of the display member, has a first surface on a side opposite to the display member and a second surface on the display member side, and has light transparency. The light diffusion member is disposed on a side opposite to the display surface of the display member, and has light diffusion. The plurality of protrusions is provided between the light transmission member and the display member.
1 . A display device comprising:
a display member having a display surface;
a light transmission member that is disposed on the display surface side of the display member, the light transmission member having light transparency and having a first surface on a side opposite to the display member and a second surface on the display member side;
a light diffusion member that is disposed on a side opposite to the display surface of the display member, the light diffusion member having light diffusion; and
a plurality of protrusions that is provided between the light transmission member and the display member.
2 . The display device according to claim 1 , wherein
the plurality of protrusions is provided between the light transmission member and the display member to be separated from each other.
3 . The display device according to claim 1 , further comprising:
a film member that is disposed between the display member and the light transmission member, wherein
the plurality of protrusions is provided on a surface of the film member.
4 . The display device according to claim 3 , wherein
a haze H1 of the second surface of the light transmission member, a haze H2 of the film member, and a haze H3 of the light diffusion member satisfy a following conditional expression (1):
H1<H2<H3 (1).
5 . The display device according to claim 1 , wherein
a light transmittance of the first surface of the light transmission member is lower than a light transmittance of the second surface of the light transmission member.
6 . The display device according to claim 5 , wherein
a light absorptance of the first surface of the light transmission member is higher than a light absorptance of the second surface of the light transmission member.
7 . The display device according to claim 5 , wherein
a haze of the first surface of the light transmission member is greater than a haze of the second surface of the light transmission member.
8 . The display device according to claim 1 wherein
the plurality of protrusions is provided on the second surface of the light transmission member.
9 . The display device according to claim 1 , wherein
the plurality of protrusions is provided on the display surface of the display member.
10 . A head-up display comprising:
a display device; and
a projection optical system configured to project display light emitted from the display device onto a display medium,
the display device comprising:
a display member having a display surface;
a light transmission member that is disposed on the display surface side of the display member, the light transmission member having light transparency and having a first surface on a side opposite to the display member and a second surface on the display member side;
a light diffusion member that is disposed on a side opposite to the display surface of the display member, the light diffusion member having light diffusion; and
a plurality of protrusions that is provided between the light transmission member and the display member.
11 . The head-up display according to claim 10 , wherein
the plurality of protrusions is provided between the light transmission member and the display member to be separated from each other.
12 . The head-up display according to claim 10 , further comprising:
a film member that is disposed between the display member and the light transmission member, wherein
the plurality of protrusions is provided on a surface of the film member.
13 . The head-up display according to claim 12 , wherein
a haze H1 of the second surface of the light transmission member, a haze H2 of the film member, and a haze H3 of the light diffusion member satisfy a following conditional expression (1):
H1<H2<H3 (1).
14 . The head-up display according to claim 10 , wherein
a light transmittance of the first surface of the light transmission member is lower than a light transmittance of the second surface of the light transmission member.
15 . The head-up display according to claim 14 , wherein
a light absorptance of the first surface of the light transmission member is higher than a light absorptance of the second surface of the light transmission member.
16 . The head-up display according to claim 14 , wherein
a haze of the first surface of the light transmission member is greater than a haze of the second surface of the light transmission member.
17 . The head-up display according to claim 10 , wherein
the plurality of protrusions is provided on the second surface of the light transmission member.
18 . The head-up display according to claim 10 , wherein
the plurality of protrusions is provided on the display surface of the display member.