An electronic paper display, comprising an electrophoretic display module having a display surface, the electrophoretic display module is a reflective display module, a light guide plate arranged above the display surface of the electrophoretic display module and having a top surface and a bottom surface, and at least two LEDs arranged with a distance between adjacent LEDs above the electrophoretic display module, wherein a dark area (B1, B2, B3) is formed by light emitted by adjacent LEDs and a driving circuit board for driving the LEDs, wherein the light guide plate has a first portion corresponding to a display area of the electronic paper display and the display area of the electronic paper display is bounded by an in-light position of an edge of the display area towards a second portion and the second portion has an in-light surface facing the at least two LEDs, and that a light area (A1, A2, A3) is formed right in front of the LEDs, and a dark area (B1, B2, B3) is formed right in front of the area between the adjacent LEDs, the display area is completely inside the light area (A1, A2, A3), a tooth-shaped pattern (331, 332, 333) is formed on the in-light surface of the second portion and extended from the top surface to the bottom surface of the light guide plate, the tooth-shaped pattern (331, 332, 333) provides the in-light surface with in-light angles of multiple directions, which greatly diffuse reflected light beam that enters the light guide plate, thereby avoiding appearance of a dark area (B1, B2, B3) in an in-light position of the display area, so as to provide a more evenly distributed luminance in the display area of the electronic paper display and thereby the dark area (B1, B2, B3) is reduced and restricted within the second portion of the light guide plate and one end of the driving circuit board is attached to the top surface of the light guide plate by an adhesive layer, while the other end of it serves for installing the LEDs. an electrophoretic display module having a display surface, the electrophoretic display module is a reflective display module, a light guide plate arranged above the display surface of the electrophoretic display module and having a top surface and a bottom surface, and at least two LEDs arranged with a distance between adjacent LEDs above the electrophoretic display module, wherein a dark area (B1, B2, B3) is formed by light emitted by adjacent LEDs and a driving circuit board for driving the LEDs, wherein the light guide plate has a first portion corresponding to a display area of the electronic paper display and the display area of the electronic paper display is bounded by an in-light position of an edge of the display area towards a second portion and the second portion has an in-light surface facing the at least two LEDs, and that a light area (A1, A2, A3) is formed right in front of the LEDs, and a dark area (B1, B2, B3) is formed right in front of the area between the adjacent LEDs, the display area is completely inside the light area (A1, A2, A3), a tooth-shaped pattern (331, 332, 333) is formed on the in-light surface of the second portion and extended from the top surface to the bottom surface of the light guide plate, the tooth-shaped pattern (331, 332, 333) provides the in-light surface with in-light angles of multiple directions, which greatly diffuse reflected light beam that enters the light guide plate, thereby avoiding appearance of a dark area (B1, B2, B3) in an in-light position of the display area, so as to provide a more evenly distributed luminance in the display area of the electronic paper display and thereby the dark area (B1, B2, B3) is reduced and restricted within the second portion of the light guide plate and one end of the driving circuit board is attached to the top surface of the light guide plate by an adhesive layer, while the other end of it serves for installing the LEDs.