Display device

1. A display device, comprising:

a display panel; and

a frame in which the display panel is accommodated,

wherein the frame includes at least:

a first frame holding the display panel,

a second frame covering the display panel from a display surface side, and

a third frame accommodating a light source and disposed further away from the display surface side than the second frame,

the display panel includes a peripheral portion outside of a display area, the peripheral portion including corner portions at four corners and a central portion located between two of the corner portions adjacent to each other,

the first frame includes a placing portion on which the peripheral portion of the display panel is placed,

the second frame includes a frame portion, which is disposed opposite to the peripheral portion of the display panel, and a sidewall extending from a rear surface of the frame portion toward a side opposite to the display surface side, and

a distance between the placing portion and the frame portion disposed opposite to each other in at least one of the corner portions of the display panel is larger than a distance between the placing portion and the frame portion disposed opposite to each other in the central portion of the display panel,

wherein in the sidewall of the second frame, a portion that is disposed opposite to the central portion on a long side of the display panel is fixed to the third frame via screw so as to be warped toward a side opposite to the display surface side.

2. The display device according to claim 1 , wherein

the first frame includes a sidewall rising from a top surface of the placing portion toward the display surface side,

a height adjuster is disposed on the display surface side of the sidewall of the first frame in at least one of the corner portions of the display panel, and

the second frame is fixed to the first frame so that at least a part of the rear surface of the frame portion comes into contact with a top surface of the height adjuster, and

a total height of the sidewall and the height adjuster in the corner portions being greater than the sidewall in the central portion.

3. The display device according to claim 2 , wherein the height adjuster is formed integrally with the sidewall in a top surface of the sidewall of the first frame.

4. The display device according to claim 1 , wherein

the first frame includes a sidewall rising from a top surface of the placing portion toward the display surface side,

a height adjuster formed integrally with the frame portion is provided in the rear surface of the frame portion of the second frame in at least one of the corner portions of the display panel, and

the second frame is fixed to the first frame so that the height adjuster comes into contact with a top surface of the sidewall in at least one of the corner portions of the display panel.

5. The display device according to claim 4 , wherein the height adjuster is formed such that the distance between the placing portion and the frame portion increases continuously from the central portion of the display panel toward the corner portions.

6. The display device according to claim 2 , wherein

the height adjuster is a spacer through which a screw used to fix the frame penetrates,

screw holes in each of which the screw is inserted from the display surface side are formed in each of the corner portions at the four corners and the central portion located between the two corner portions adjacent to each other in the frame portion of the second frame,

the first frame and the second frame are fixed to each other using screws with the spacer interposed therebetween in at least one of the corner portions of the display panel, and

the first frame and the second frame are fixed to each other using screws without the spacer interposed therebetween in the central portion of the display panel.

7. The display device according to claim 2 , wherein

the height adjuster is a spacer through which a screw used to fix the frame penetrates,

screw holes in each of which the screw is inserted from the display surface side are formed in each of the corner portions at the four corners and the central portion located between the two corner portions adjacent to each other in the frame portion of the second frame,

the first frame and the second frame are fixed to each other using screws with the spacer interposed therebetween in at least one of the corner portions of the display panel and the central portion adjacent to the corner portion, and

a thickness of the spacer disposed in at least one of the corner portions of the display panel is smaller than a thickness of the spacer disposed in the central portion of the display panel.

8. The display device according to claim 2 , wherein

the display panel includes a first substrate on the display surface side and a second substrate on the rear surface side, the first substrate and the second substrate being disposed opposite to each other with a liquid crystal interposed therebetween, and

the second substrate includes a plurality of gate lines, a plurality of data lines, and a plurality of pixel electrodes, each of which is disposed so as to correspond to each of a plurality of pixels formed in a row direction in which the gate lines extend and a column direction in which the data lines extend, and a common electrode corresponding to the plurality of pixel electrodes.

9. The display device according to claim 1 , wherein a screw hole into which the screw is inserted is formed on the sidewall of the second frame, and

a diameter of the screw hole is larger than a diameter of the screw in a direction perpendicular to the display surface side.

10. The display device according to claim 9 , wherein the third frame includes a screw receiver projecting outwardly and receiving the screw,

another screw hole is formed on the first frame, and

the screw receiver is inserted into the another screw hole.