Unlock instant, AI-driven research and patent intelligence for your innovation.

Brightness enhancement film (BEF) and backlight module

A technology of backlight module and brightness enhancement film, which is applied in optics, nonlinear optics, lighting devices, etc., can solve the problems of changing light angle range and difficulty in applying it at the same time, and achieve the effect of improving the positive luminance

Inactive Publication Date: 2011-05-11
CORE FLEX OPTICAL SUZHOU
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since liquid crystal displays on different electronic devices (such as mobile phones, notebook computers, monitors, televisions, etc.) have different requirements for brightness distribution in different directions and different viewing angles, the above two patents It is difficult for a backlight module with an optical film structure to change the range of light output angles as the direction changes, so this design concept is difficult to apply to various types of electronic devices at the same time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Brightness enhancement film (BEF) and backlight module
  • Brightness enhancement film (BEF) and backlight module
  • Brightness enhancement film (BEF) and backlight module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The following descriptions of various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The direction terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

[0061] Figure 1A and Figure 1B It is a schematic cross-sectional view of a backlight module in two mutually perpendicular directions according to an embodiment of the present invention, Figure 2A for Figure 1A The three-dimensional schematic diagram of the enhancement sheet in , while Figure 2B for Figure 2A The schematic diagram of the top view of the enhancement sheet. refer to Figure 1A , Figure 1B , Figure 2A and Figure 2B, the backlight module 100 of this embodiment includes a light emitting element 110 , a light enhancement ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a brightness enhancement film (BEF), comprising a light transmission substrate, multiple optical structures, a reflective layer and a prism layer, wherein the light transmission substrate is provided with a first surface and a second surface which are opposite to each other; the multiple optical modules are configured on the first surface; the reflective layer is configured on the second surface and is provided with multiple light transmission holes; and the prism layer covers the reflective layer and the second surface and comprises multiple prism structures protruding along the direction far away from the second surface. The invention also discloses a backlight module.

Description

technical field [0001] The present invention relates to an optical film and a light source module using the same, and in particular to a brightness enhancement film (BEF) and a backlight module using the same. Background technique [0002] With the advancement of display technology, flat panel displays have become the mainstream of display devices to replace traditional heavy cathode ray tubes (cathode ray tubes, CRTs). Among flat panel displays, a liquid crystal display (LCD) is more popular and popular. The liquid crystal display includes a liquid crystal panel and a backlight module. The liquid crystal panel itself does not emit light, but is used to determine the light transmission rate. Therefore, a backlight module is arranged behind the liquid crystal panel as a plane light source for the liquid crystal panel. The optical quality of the planar light source has a great influence on the display quality of the liquid crystal display. For example, in order to display th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F1/1335G02F1/13357G02B5/02G02B5/04F21V13/00
Inventor 萧增科李清祥刁国栋
Owner CORE FLEX OPTICAL SUZHOU