Method for improving LCD backlight brightness

A technology of backlight brightness and light, applied in the field of LCD display, can solve the problems of light waste and outgoing, and achieve the effect of improving the utilization rate of light

Pending Publication Date: 2020-09-04
中航华东光电有限公司
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  • Abstract
  • Description
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Problems solved by technology

But in fact, in this backlight structure, the brightness angle of the secondary extended light source coming out of the diffusion film is very wide, and part of the light cannot exit from the prism surface of the BEF film due to total reflection, resulting in waste of light. For further optimization The light output rate of the backlight system, to improve the brightness of the backlight, requires a new design of a backlight architecture and design method to improve the brightness of the LCD backlight

Method used

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  • Method for improving LCD backlight brightness
  • Method for improving LCD backlight brightness
  • Method for improving LCD backlight brightness

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] In the present invention, in the absence of a contrary description, the orientation words such as "upper, lower" and the like included in the term only represent the orientation of the term in the normal use state, or the common name understood by those skilled in the art, and should not be viewed as a limitation of this term.

[0022] The invention provides a method for improving the brightness of the LCD backlight, which includes designing the microstructure on the lower surface of the optical film layer, using optical simulation software to fit, simulate, and optimize the light, and taking the exit brightness as the target point to optimize the surface...

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Abstract

The invention discloses a method for improving LCD backlight brightness. The method comprises the steps: designing a microstructure on the lower surface of an optical film layer, performing fitting, simulation and optimization on light through optical simulation software, then with the emergent brightness as a target point, optimizing the surface type of a microstructure and the refractive index of the microstructure, thus changing the propagation path and the utilization rate of large-angle light incidence. According to the method for improving the LCD backlight brightness, the axial brightness can be effectively improved, the display signal-to-noise ratio is enhanced, and the purpose of enhancing the display visibility of a liquid crystal screen is achieved; and meanwhile, the backlightpower consumption can be reduced, and the user experience and the product reliability in a special environment are improved.

Description

technical field [0001] The invention relates to the technical field of LCD display, in particular to a method for improving the brightness of an LCD backlight. Background technique [0002] With the development of the times, the display technology has also made remarkable progress, changing with each passing day, and LCD products as display media are also tending to be diversified, and liquid crystal displays of different shapes, functions, and sizes have come out one after another. For example, at present, the display screens that will be applied to automobiles, airplanes, advertising machines, and industrial equipment consoles, whether it is a flat display or a curved surface display, basically use LCD as the display medium, and the light energy is input through the backlight, and then through The modulation of the LCD itself is used for signal control to achieve the final display effect and purpose. [0003] Under such an application background, especially the large-size...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B27/00
CPCG02F1/133606G02B27/0012
Inventor 赵松陈召全吴丽张伟卢业能彭继焦垚冯吉祥张宇申国庆包训旺
Owner 中航华东光电有限公司
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