2results about How to "Avoid bright spots" patented technology

This invention discloses a double-sided light guide plate and its processing method, as well as a backlight module, relating to the field of light guide plate processing technology. The double-sided light guide plate includes a light guide plate body, which includes a first surface and a second surface disposed opposite to each other. The light guide plate body also includes a light-incoming surface and a light-guiding side surface disposed between the first surface and the second surface. Both the first surface and the second surface include a positioning surface and a light-guiding surface disposed sequentially away from the light-incoming surface. Positioning grooves are formed on both the first positioning surface and the second positioning surface. The positioning grooves extend along a first direction parallel to the light-incoming surface, and at least part of the positioning grooves are arc grooves with intersecting engraved lines. A reflective coating is provided on the light-guiding side surface between the first light-guiding surface and the second light-guiding surface. By adopting a partitioned arrangement of the positioning surface and the light-guiding surface, light with a large scattering angle is refracted outward in the positioning surface. Combined with the reflective coating, the technical effects of light spot suppression and improved uniformity are achieved.

This utility model discloses a light guide strip and a device with a light guide strip. The light guide strip includes a light guide strip body, which is a rigid structure. The bottom surface of the light guide strip body has a light-incident area, and the top surface has a light-exiting area. The light-incident area and the light-exiting area are connected by a reflective area. A refractive groove is located in the light-incident area and is used to correspond to an LED light. Multiple refractive grooves are spaced apart along the extension direction of the light-incident area. The device with the light guide strip includes a housing, an LED light, and the aforementioned light guide strip. The LED light and the light guide strip are located inside the housing. The refractive grooves correspond to the LED light. The housing has a light-exiting part, and the light-exiting area corresponds to the light-exiting part. The light guide strip is characterized by its small thickness, small space occupation, and combination of optical performance and mechanical strength. It can be widely used in various devices, has good heat dissipation and light emission effects, is easy to use for long-term use, and is low in cost.