US2011090141A1PendingUtilityA1

Backlight module and display apparatus

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Assignee: AU OPTRONICS CORPPriority: Oct 16, 2009Filed: Jan 8, 2010Published: Apr 21, 2011
Est. expiryOct 16, 2029(~3.3 yrs left)· nominal 20-yr term from priority
Inventors:Super LiaoPo-Chun HsuChih-Wei Chang
G02B 6/005G09G 3/3426G02B 6/008G09G 2300/0426G02B 6/0046G02B 6/0068G09G 2320/0233G02B 6/0083
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Claims

Abstract

A backlight module including a light guide plate, light source sets, and controlling circuits is provided. The light guide plate has a plurality of regions, and each region of the light guide plate has a light incident surface correspondingly. Each light source set is disposed at the light incident surface of one of the regions of the light guide plate, and each light source set has at least one middle light source and at least one edge light source. The middle light source is disposed in a middle region of the light source set and the edge light source is disposed at an edge of the light source set. Each controlling circuit is electrically connected to the middle light source of one of the light source sets, and the edge light source of each light source set is electrically connected to the controlling circuit of the adjacent light source set.

Claims

exact text as granted — not AI-modified
1 . A backlight module, comprising:
 a light guide plate, having a plurality of regions, wherein each region of the light guide plate has a light incident surface correspondingly;   a plurality of light source sets, each light source set being disposed at one of the light incident surfaces of the light guide plate and having at least one middle light source and at least one edge light source, wherein the middle light source is disposed in a middle region of the light source set and the edge light source is disposed at an edge of the light source set; and   a plurality of controlling circuits, each controlling circuit being electrically connected to the middle light source of one of the light source sets, wherein the edge light source of each light source set is electrically connected to the controlling circuit of the adjacent light source set.   
     
     
         2 . The backlight module according to  claim 1 , wherein the at least one edge light source of each light source set is disposed at one or more side(s) of the at least one middle light source of the light source set. 
     
     
         3 . The backlight module according to  claim 2 , wherein the number of the at least one edge light source disposed at the one or more side(s) of the at least one middle light source is more than one. 
     
     
         4 . The backlight module according to  claim 3 , wherein there is one or more middle light source(s) inserted between the edge light sources. 
     
     
         5 . The display module as claimed in  claim 1 , wherein the at least one edge light source is disposed near a boundary of the regions of the light guide plate. 
     
     
         6 . The backlight module according to  claim 1 , wherein the regions of the light guide plate are respectively a single sub-light guide plate, the sub-light guide plates are joined together to form the light guide plate, and each sub-light guide plate has one light incident surface. 
     
     
         7 . The backlight module according to  claim 6 , wherein each sub-light guide plate has a first side surface and a second side surface disposed oppositely, a portion of the first side surface serves as the light incident surface, and another portion of the first side surface has a joining region contacting with the second side surface of the adjacent sub-light guide plate. 
     
     
         8 . The backlight module according to  claim 6 , wherein the sub-light guide plates are respectively a wedge type light guide plate or a flat type light guide plate. 
     
     
         9 . The backlight module according to  claim 1 , wherein the light guide plate is a wedge type light guide plate or a flat type light guide plate. 
     
     
         10 . The backlight module as claimed in  claim 1 , further comprising an optical film set disposed above the light guide plate. 
     
     
         11 . A display apparatus, comprising:
 a display panel; and   a backlight module of  claim 1 .   
     
     
         12 . The display apparatus as claimed in  claim 11 , wherein the display panel comprises a liquid crystal display panel, a flexible flat display panel, an electronic paper display panel or a touch panel.

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