ELECTRONIC PAPER DISPLAY SCREEN LIGHT GUIDE PLATE AND ELECTRONIC PAPER DISPLAY SCREEN

摘要

Provided are an electronic paper display screen light guide plate (30) and an electronic paper display screen. The light guide plate (30) is used for being arranged above the display surface of an electrophoresis display module (10) and comprises a light guide plate body. Serrations are arranged on a light incident surface (33) of the light guide plate body. The electrophoresis display module (10) comprises a microcapsule electrophoresis display module or a micro-cup electrophoresis display module. The serrations are formed by a plurality of arc-shaped projections (331) or a plurality of arc-shaped grooves (332) or a plurality of horny projections or a plurality of horny grooves (333). According to the light guide plate (30) and the electronic paper display screen, the serrations are arranged on the light incident surface (33) of the light guide plate (33) so that the light incident surface (33) has light incident angles in a plurality of directions; thus, a refracted light beam entering the light guide plate (30) is greatly diffused, light incident dark areas (B1, B2, B3) can be prevented from appearing at the light incident location of a display area (90) of the electronic paper display screen, and furthermore, the luminance of the display area (90) of the electronic paper display screen becomes more uniform, and a better lighting effect is achieved.