Each prism has a tip end facing the second surface light source assembly. The light filter element is configured to allow an incident light ray within a predetermined range of incident angle to pass therethrough. The backlight module can be switched between a narrow viewing angle mode and a wide viewing angle mode. Related driving method and display apparatus are also provided. Filed: July 28, Date of Patent: July 31, Abstract: A backlight module includes a light guide plate having a bottom surface, a light emitting surface, a first light incident surface, and microstructures.
Each microstructure recesses into or protrudes from the bottom surface and has a first and a second surfaces. The first and the second surfaces of at least one of the microstructures are located on two sides of a first reference plane parallel to the first light incident surface. A section-line of each first surface on a second reference plane perpendicular to the first light incident surface and perpendicular to the light emitting surface is a straight line.
A first angle between each first surface and a third reference plane parallel to the light emitting surface in the light guide plate is between 0 degrees and 20 degrees, and a thickness of each microstructure is between 0 micrometers and 20 micrometers. Filed: February 2, Date of Patent: May 1, Assignee: Young Lighting Technology Inc. Display apparatus and displaying method thereof. Abstract: A display apparatus and a displaying method thereof are provided. The display apparatus includes a transmissive display panel, a liquid crystal glass, a backlight module and a transparent polarizer film.
The liquid crystal glass is disposed at a side of the transmissive display panel. The liquid crystal glass has a transparent state and an atomization state and is adapted to switch between the transparent state and the atomization state. The backlight module is disposed at a side of the liquid crystal glass away from the transmissive display panel. The backlight module includes a transparent light-guiding plate and at least one light bar.
The liquid crystal glass is located between the transmissive display panel and the transparent light-guiding plate. The transparent polarizer film is disposed at a side of the transparent light-guiding plate away from the liquid crystal glass.
Filed: August 18, Date of Patent: March 27, Publication date: November 16, Applicant: Young Lighting Technology Inc. Publication date: June 15, Publication date: June 1, Planar light source. Abstract: A planar light source including an LGP and first and second light sources are provided. The LGP has a first surface and a second surface opposite to each other and a first groove and a second groove.
The first groove and the second groove are respectively located on the first surface and the second surface, and are respectively located at two sides of a center line of the LGP, where the center line equally divides the first surface and the second surface. The first groove has a first side surface and a first light incident surface, and the second groove has a second side surface and a second light incident surface, where the light sources are disposed in the grooves.
The light sources are suitable for respectively providing a light beam entering the LGP through the corresponding light incident surface. Filed: July 2, Date of Patent: November 1, Abstract: A backlight module including an LGP, an optical film, a first light source is provided. The LGP has a bottom surface, a light emitting surface, a first light incident surface, and microstructures.
Each microstructure is recessed into or protrudes out of the bottom surface and includes at least two structural units. A section line of each structural unit on a first reference plane is a curve, and the curve has a peak point. A distance between two peak points of two adjacent structural units along a first direction is greater than 0 and smaller than a half of a total width of the two structural units along the first direction.
Each microstructure has a symmetric plane perpendicular to the light emitting surface and the first light incident surface. To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us. OSO version 0. University Press Scholarship Online. Sign in. Not registered? Sign up. Publications Pages Publications Pages. Recently viewed 0 Save Search.
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