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Backlight module, LCD screen and virtual reality display helmet

A technology of backlight module and display screen, applied in optics, optical components, nonlinear optics, etc., can solve problems such as increased power consumption, low efficiency of display screen, and influence on users' reception of virtual reality content, and achieves simple structure , Improve light energy utilization and reduce energy consumption

Pending Publication Date: 2018-10-12
SHENZHEN SKYWORTH NEW WORLD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light beams in the remaining angle of view form stray light due to scattering, refraction and reflection in the space formed by the display screen and the optical magnifying glass group, which affects the user's reception of virtual reality content.
Moreover, the inefficiency of energy utilization of the display screen with a wide viewing angle will lead to an increase in power consumption

Method used

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  • Backlight module, LCD screen and virtual reality display helmet
  • Backlight module, LCD screen and virtual reality display helmet
  • Backlight module, LCD screen and virtual reality display helmet

Examples

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0036] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0037] It should be noted that like nume...

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Abstract

The invention relates to the technical field of display screens and virtual reality, in particular to a backlight module, an LCD screen and a virtual reality display helmet. The backlight module comprises a light source module, a first expansion panel, a second expansion panel and a directional diffusion module. The plane, close to one side of the second expansion panel, of the first expansion panel has a diffraction microstructure or holographic structure playing a transmission and diffraction effect, the plane, away from one side of the second expansion panel, of the first expansion panel isplated with a total reflection film layer or collimating or near-collimating illumination beams provided by the (shown in the description) light source module are transmitted and expanded by the first expansion panel and the second expansion panel in the vertical direction and the horizontal direction, and the directional diffusion module controls preset emergency beam angles of output light in the vertical direction and the horizontal direction, accordingly the light utilization rate of the backlight module is improved, the energy consumption is reduced and stray light is decreased. The LCDscreen and the virtual reality display helmet include the backlight module.

Description

technical field [0001] The invention relates to the technical field of display screens and virtual reality, in particular to a backlight module, an LCD display screen and a virtual reality display helmet. Background technique [0002] The virtual content display of the virtual reality display helmet is mainly composed of a display screen and an optical magnifying glass group. Usually, the display screen is an LCD display screen. The display effect of the LCD display has a wide viewing angle characteristic, which can generally reach 160-170 degrees. When a display screen with a wide viewing angle is used in a virtual reality display helmet, usually only light beams within a viewing angle of 30-50 degrees can be received by the user. Such as figure 1 As shown, at points P1 and P2 on the LCD display screen, only light beams in areas A and B can be received by human eyes. The light beams in the remaining angle of view form stray light due to scattering, refraction and reflect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B27/01
CPCG02B27/0172G02F1/133615
Inventor 不公告发明人
Owner SHENZHEN SKYWORTH NEW WORLD TECH CO LTD
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