A display device, including a display screen and a plastic frame for the display screen , wherein the display screen includes a first panel and a second panel which is laminated to the first panel , the plastic frame includes a limiting part , formed into the shape of a rectangle and defining an area for fixing the display screen ; and a supporting part , extending perpendicularly to an inner sidewall of the limiting part to support the second panel of the display screen , and the plastic frame further includes a fixing unit arranged between the limiting part and the display screen , a fixing surface of the fixing unit is in contact with side surfaces of the first panel and the second panel , and wherein the fixing unit includes a first wedge block and a second wedge block , and a side surface of the second wedge block directed towards a light emitting direction of the display screen is flush with an outer surface of the first panel , each of the first wedge block and the second wedge block is in the shape of a triangle and includes a bottom surface and an inclined surface, the bottom surface of the first wedge block is fixed to the inner sidewall of the limiting part directed towards the display screen or formed integrally with the inner sidewall of the limiting part , and the inclined surface of the first wedge block is directed towards the side surface of the first panel , and the inclined surface of the second wedge block is in contact with the inclined surface of the first wedge block , while the bottom surface of the second wedge block is in contact with the side surfaces of the first panel and the second panel . the display screen includes a first panel and a second panel which is laminated to the first panel , the plastic frame includes a limiting part , formed into the shape of a rectangle and defining an area for fixing the display screen ; and a supporting part , extending perpendicularly to an inner sidewall of the limiting part to support the second panel of the display screen , and the plastic frame further includes a fixing unit arranged between the limiting part and the display screen , a fixing surface of the fixing unit is in contact with side surfaces of the first panel and the second panel , and wherein the fixing unit includes a first wedge block and a second wedge block , and a side surface of the second wedge block directed towards a light emitting direction of the display screen is flush with an outer surface of the first panel , each of the first wedge block and the second wedge block is in the shape of a triangle and includes a bottom surface and an inclined surface, the bottom surface of the first wedge block is fixed to the inner sidewall of the limiting part directed towards the display screen or formed integrally with the inner sidewall of the limiting part , and the inclined surface of the first wedge block is directed towards the side surface of the first panel , and the inclined surface of the second wedge block is in contact with the inclined surface of the first wedge block , while the bottom surface of the second wedge block is in contact with the side surfaces of the first panel and the second panel . <EOS>