The utility model discloses a backlight module, which comprises a light guide plate, a plurality of LED lamps, a diffusion film and a light-shielding film. The LED lamp is arranged on one side of the light guide plate, the LED lamp forms a bright area in front of the LED lamp, and a dark area is formed between the adjacent LED lamp; the diffusion film is arranged on the surface of the light guide plate and is located outside the visual area. The diffusing film is provided with a hollow part in the corresponding area of the bright area, the light-shielding film is arranged on the diffusing film and covers the hollow part, and the light-shielding film is located outside the visual area. Because the diffusive film sets a tunneling part in the corresponding area of the bright area, and the light-shielding film covers the tunneling part, the light in the bright area can be weakened by using the light absorption characteristics of the light-shielding film, thus reducing the brightness of the bright area. The diffusive film located in the dark area diffuses the light, thereby increasing the brightness of the dark area, thereby making the backlight module produce uniform light. The backlight module provided by the utility model has the advantages of low production cost and avoiding uneven brightness and darkness of the backlight module.
【技术实现步骤摘要】
一种背光模组
本技术涉及一种显示
，更具体地说，涉及一种背光模组。
技术介绍
传统的背光模组通常在导光板1前设置多个LED灯2，但是经常会在可视区域3内产生亮区4和暗区5，亮区4主要是因为离LED灯2太近造成，而暗区5主要是相邻两个LED灯2之间的光线不足造成，如图1所示，为亮区4和暗区5的模拟图，以发光角度90°为例，LED灯2与导光板1的距离H越小，亮区4越明显，相邻两个LED灯2之间的距离P越大，暗区5也越明显，从而造成背光模组亮暗不均的现象。
技术实现思路
本技术所要解决的技术问题是提供了一种背光模组，由于扩散膜在亮区的对应区域设置掏空部，而遮光膜覆盖在掏空部上，利用遮光膜的吸光特性，可使亮区的光线减弱，从而降低亮区的亮度，而位于暗区的扩散膜将光线扩散，从而使增加暗区的亮度，进而使背光模组出光均匀，使其达到正常的显示效果，本技术提供的背光模组生产成本低，避免背光模组亮暗不均。本技术所要解决的技术问题通过以下技术方案予以实现：为解决上述技术问题，本技术提供了一种背光模组，其包括导光板、多个LED灯、扩散膜和遮光膜，所述LED灯设于所述导光板一侧边，所述LED灯...
【技术保护点】
1.一种背光模组，其特征在于，其包括：导光板；多个LED灯，其设于所述导光板一侧边，所述LED灯前形成有亮区，相邻所述LED灯之间形成有暗区；扩散膜，其设于所述导光板上表面，位于可视区域外的所述扩散膜于所述亮区的对应区域设有掏空部；遮光膜，其设于所述扩散膜上且覆盖所述掏空部，所述遮光膜位于可视区域外。
【技术特征摘要】
1.一种背光模组，其特征在于，其包括：导光板；多个LED灯，其设于所述导光板一侧边，所述LED灯前形成有亮区，相邻所述LED灯之间形成有暗区；扩散膜，其设于所述导光板上表面，位于可视区域外的所述扩散膜于所述亮区的对应区域设有掏空部；遮光膜，其设于所述扩散膜上且覆盖所述掏空部，所述遮光膜位于可视区域外。2.根据权利要求1所述的背光模组，其特征在于，所述遮光膜的下表面于所述暗区的对应区域设有反射片。3.根据权利要求2所述的背光模组，其特征在于，所述反射片的形...
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