Display apparatus and light-emitting module and light-guiding plate thereof

Abstract

A light-emitting module includes a light-guiding plate, a plurality of light-guiding elements and a light-emitting unit. The light-guiding plate can guide the direction of light, and has at least a light input surface and two opposite flat surfaces. The light-guiding elements are disposed at one of the surfaces of the light-guiding plate. By viewing along a direction perpendicular to the surfaces, the shape of each of the light-guiding elements is curve shape with at least one inflection point. The light-emitting unit is disposed adjacent to the light input surface of the light-guiding plate. The light emitted by the light-emitting unit enters the light-guiding plate, is guided by the light-guiding plate and the light-guiding elements, and is outputted through one of the surfaces of the light-guiding plate in an alternating arrangement of bright and dark zones. The invention also discloses a display apparatus and the light-guiding plate.

What is claimed is: 
     
         1 . A light-emitting module, comprising:
 a light-guiding plate guiding the direction of the light and having at least one light input surface and two opposite flat surfaces;   a plurality of light-guiding elements disposed at one of the flat surfaces of the light-guiding plate, and the light-guiding element having curve-shape with at least one inflection point; and   a light-emitting unit disposed adjacent to the light input surface of the light-guiding plate,   wherein the light emitted from the light-emitting unit enters the light-guiding plate, is guided by the light-guiding plate and the light-guiding elements, and is outputted through one of the flat surfaces of the light-guiding plate in an alternating arrangement of bright zone and dark zone.   
     
     
         2 . The light-emitting module as recited in  claim 1 , wherein any two of the adjacent light-guiding elements have an space between zero and the width of the flat surface. 
     
     
         3 . The light-emitting module as recited in  claim 1 , wherein an included angle within 0 and 90 degrees is between the centerline of the corresponding light-guiding element and the short-side of the flat surface. 
     
     
         4 . The light-emitting module as recited in  claim 1 , wherein the shape of the light-guiding element is recess or protrusion by viewing from the light input surface. 
     
     
         5 . The light-emitting module as recited in  claim 4 , wherein the light-guiding elements are configured with a reflective material. 
     
     
         6 . The light-emitting module as recited in  claim 1 , wherein the short-side width of the light-guiding element is between 50 μm and 150 μm by viewing from the flat surface. 
     
     
         7 . A display apparatus, comprising:
 a display panel; and   a light-emitting module disposed opposite to the display panel, including a light-guiding plate, a plurality of light-guiding elements and a light-emitting unit, wherein the light-guiding plate guides the direction of the light and has at least one light input surface and two opposite flat surfaces, the light-guiding elements are disposed at one of the flat surfaces of the light-guiding plate, and the light-guiding element has a curve-shape with at least one inflection point, and the light-emitting unit is disposed adjacent to the light input surface of the light-guiding plate,   wherein the light emitted from the light-emitting unit enters the light-guiding plate, is guided by the light-guiding plate and the light-guiding elements, and is outputted through one of the flat surfaces of the light-guiding plate in an alternating arrangement of bright zone and dark zone.   
     
     
         8 . The display apparatus as recited in  claim 7 , wherein any two of the adjacent light-guiding elements have a space between zero and a width of the flat surface. 
     
     
         9 . The display apparatus as recited in  claim 7 , wherein an included angle within 0 and 90 degrees between the centerline of the light-guiding element and the short-side of the flat surface. 
     
     
         10 . The display apparatus as recited in  claim 7 , wherein the shape of the light-guiding element is recess or protrusion by viewing from the light input surface. 
     
     
         11 . The display apparatus as recited in  claim 10 , wherein the light-guiding elements are configured with a reflective material. 
     
     
         12 . The display apparatus as recited in  claim 7 , wherein the short-side width of the light-guiding element is between 50 μm and 150 μm by viewing from the flat surface. 
     
     
         13 . The display apparatus as recited in  claim 7 , wherein the display panel includes a plurality of sub-pixels, the curve amplitude of the light-guiding element is within 0 and 1.5 times of the short-side width of the sub-pixel. 
     
     
         14 . The display apparatus as recited in  claim 7 , wherein the light-emitting module is a parallax barrier device of the display apparatus. 
     
     
         15 . The display apparatus as recited in  claim 14 , further comprising:
 a backlight module, wherein the light-emitting module is between the display panel and the backlight module, the backlight module is turned off when the display apparatus displays is in 3D mode, and the backlight module is turned on when the display apparatus displays is in 2D mode.   
     
     
         16 . A light-guiding plate, comprising:
 at least one light input surface;   two opposite flat surfaces; and   a plurality of light-guiding elements disposed on one of the flat surfaces of the light-guiding plate, and the light-guiding element having curve-shape with at least one inflection point.   
     
     
         17 . The light-guiding plate as recited in  claim 16 , wherein the short-side width of the light-guiding element is between 50 μm and 150 μm by viewing from the flat surface. 
     
     
         18 . The light-guiding plate as recited in  claim 16 , wherein an included angle within 0 and 90 degrees between the centerline of the light-guiding element and the short-side of the flat surface. 
     
     
         19 . The light-guiding plate as recited in  claim 16 , wherein the shape of the light-guiding element is recess or protrusion by viewing from the light input surface. 
     
     
         20 . The light-guiding plate as recited in  claim 19 , wherein the light-guiding elements are configured with a reflective material.