Patent ID: 11953784
Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G | IPC F  G

Claim 17:
18. A backlight module, comprising:
a light-emitting element; and
a light guide plate assembly located at a light-exiting side of the light-emitting element and configured to guide light emitted from the light-emitting element,
wherein the light guide plate assembly comprises:
a reflective part comprising an opening; and
a transmissive part, wherein at least a part of the transmissive part is located at a side of the reflective part adjacent to a light-exiting side of the light guide plate assembly, and the transmissive part comprises a first part and a second part, wherein along a direction from a center of the opening to an edge of the opening, light intensity of the exiting light received by the first part is negatively correlated to light transmittance of the first part, whcrcin thc sccond part is locatcd at thc sidc of thc rcflcctivc part adjaccnt to thc light cxiting sidc of thc light guidc platc assembly, and at least partially surrounds thc first part, thc second part and thc opening arc staggered from each other along a dircction perpcndicular to a planc of thc light guidc platc assembly, and a thickncss of thc second part along thc dircction perpcndicular to thc planc of thc light guidc platc assembly is grater than a minimum thickncss of thc first part along thc dircction perpcndicular to thc planc of thc light guidc plate assembly, wherein the reflective part is directly beneath the second part, and wherein the light-emitting element corresponds to the center of the opening.