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Optical film

A technology for optical films and base films, applied in the field of optical films, can solve problems such as lowering of display quality, improve image quality, achieve thinning, and prevent light interference or color unevenness.

Pending Publication Date: 2022-05-06
LMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the upper diffusion sheet is removed to reduce the thickness of the backlight unit, a light interference phenomenon caused by laminating a plurality of films on the outer surface, that is, a Newton's Ring phenomenon, or a phenomenon on the display surface of an electronic device may occur. Rainbow mura phenomenon that produces rainbow-shaped stains (color unevenness), which may cause a decrease in display quality

Method used

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Embodiment Construction

[0024] The various embodiments of this specification and the terms used therein do not limit the technical features described in this specification to specific embodiments, and it should be understood that various changes, equivalents or replacements of the corresponding embodiments are included. In connection with the description of the drawings, similar symbols may be applied to similar or related components. A singular form of a noun corresponding to a component may include one or more of the components in the relevant context as long as there is no clear indication otherwise.

[0025] According to various embodiments, each of the constituent elements described above (for example, a module or program) may include a single or multiple entities, and some of the multiple entities may be separately arranged in other constituent elements. According to various embodiments, among the aforementioned corresponding constituent elements, one or more constituent elements or operations ...

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Abstract

An optical film according to various embodiments of the present disclosure may include: a prism pattern layer on one surface of which a plurality of prisms having pattern directions parallel to each other along a first direction are formed; a first diffusion layer formed on the other surface of the prism pattern layer; a base film which is in contact with the first diffusion layer on one surface and has an optical axis direction of a second direction different from the first direction; and a second diffusion layer in contact with the other surface of the base film. In addition, an optical film related to various embodiments and a backlight unit including the optical film may be provided.

Description

technical field [0001] Various embodiments of the present disclosure relate to optical films used in liquid crystal display devices. Background technique [0002] Generally, a liquid crystal display (LCD) may include a backlight unit that uniformly irradiates light to the entire screen of the electronic device. The backlight unit may include a light source, a light guide plate, a diffusion sheet, and an optical film with prisms. The light emitted from the light source can be transmitted to the upper part through the light guide plate, and the light transmitted to the upper part can be transmitted to the liquid crystal panel through the optical film provided on the upper part after being diffused by the diffusion sheet. Depending on circumstances, the backlight unit may be provided with an additional diffusion sheet on the upper portion of the optical film. A general optical film can be configured to change a point light source of a light source into a surface light source ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G02B5/02G02F1/13357
CPCG02B5/045G02B5/021G02F1/133607G02F1/133606G02F1/133605G02B6/0051G02B6/0053G02B5/0294G02B5/0231G02B6/005G02F1/133502G02F1/133504G02B5/0242
Inventor 金鎭焕赵诚植任主爀
Owner LMS