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Display system

A display system and liquid crystal display device technology, applied in optics, instruments, nonlinear optics, etc., can solve the problem that the head-up display system and sunglasses cannot be used at the same time

Inactive Publication Date: 2020-04-10
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology

[0004] The embodiment of the present invention provides a display system to solve the problem in the prior art that the head-up display system and sunglasses cannot be used at the same time

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Embodiment Construction

[0029] The realization principle of the head-up display system is to use the reflection imaging of the front windshield, such as figure 1 As shown, the light emitted by the liquid crystal display device 01 shoots at the front windshield 02 at a large angle (generally 60-70 degrees), and is reflected by the front windshield 02 and enters the human eye. virtual image in front figure 1 The location where the dotted lines converge. Such as figure 2 As shown, according to Brewster's law, the reflected light is partially polarized light and most of them are s-polarized light, while the p-polarized light is absorbed by the front windshield 02, that is, the light reflected by the front windshield 02 vibrates vertically (vertical on the plane of incidence) more than parallel vibrations. exist figure 2 The angle of the incident light and the angle of the reflected light is i b , the angle at which light is absorbed is r 0 , the refractive index of air is n 1 , the refractive in...

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Abstract

The invention discloses a display system. A light absorption axis of an upper polaroid on a light-emitting surface of a liquid crystal display device is perpendicular to the plane where a windshield is located, so that the liquid crystal display device can emit s polarized light which can be reflected by the windshield. Moreover, a transparent optical film material is arranged on the optical pathprojected to the windshield by the liquid crystal display device; the transparent optical film material can convert part of s polarized light emitted by the liquid crystal display device into p polarized light and project the p polarized light to the windshield. The s polarized light and the p polarized light exist in the reflected light passing through the windshield at the same time, so that a driver can see the p polarized light reflected by the windshield when wearing the sunglasses and thus the effect that the vehicle-mounted display system can use the sunglasses for watching is realized.Meanwhile, when the driver does not wear the sunglasses, the driver can watch the images of the vehicle-mounted display system.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display system. Background technique [0002] Head Up Display (HUD, Head Up Display), also known as a parallel display system, refers to a driver-centered, blind-operated, multi-functional instrument panel. Its function is to project important driving information such as speed and navigation onto the windshield in front of the driver, so that the driver can see important driving information such as speed and navigation without bowing or turning his head. [0003] The realization principle of the head-up display system is to use the reflection imaging of the front windshield, and the principle of the sunglass (Sunglass) worn by the driver is to filter the reflected light from the road surface. According to the imaging principle of the current head-up display system, the sunglasses worn by the driver will filter out the display light of the head-up display system, so that the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B27/28G02F1/1335
CPCG02B27/0101G02B27/286G02F1/133528
Inventor 王光荣方丽婷
Owner XIAMEN TIANMA MICRO ELECTRONICS
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