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An automatic anti-glare automotive electronic rearview mirror

A technology for automotive electronics and rearview mirrors, applied in the field of automotive rearview mirrors, can solve problems such as difficult anti-glare, achieve good anti-glare effect, wide application range, and reduced response time.

Active Publication Date: 2020-08-25
HUIZHOU DESAY SV AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to play the role of anti-glare in time

Method used

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  • An automatic anti-glare automotive electronic rearview mirror
  • An automatic anti-glare automotive electronic rearview mirror
  • An automatic anti-glare automotive electronic rearview mirror

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An automatic anti-glare automotive electronic rearview mirror, comprising a housing and a mirror structure arranged on the housing, the mirror structure is as figure 1 Shown: including a glass cover 1, a front glass substrate 3, a rear glass substrate 5, a front polarizer 2, a rear reflective polarizer 6, and a light-absorbing layer 7, forming a sandwich structure between the front glass substrate 3 and the rear glass substrate 5 The sandwich structure is filled with a liquid crystal layer 4, the front polarizer 2 and the rear reflective polarizer 6 are respectively arranged on the outside of the front glass substrate 3 and the rear glass substrate 5, and the glass cover plate 1 is arranged on the outside of the front polarizer 2, The light-absorbing layer 7 is arranged on the outside of the rear reflective polarizer 6; on the opposite sides of the front glass substrate 3 and the rear glass substrate 5, a liquid crystal alignment layer is arranged, and the liquid crystal...

Embodiment 2

[0057] The difference between this embodiment and Embodiment 1 lies in that the alignment modes of the liquid crystal molecules in the liquid crystal layer 4 are different.

[0058] In this embodiment, the alignment mode of the liquid crystal molecules of the liquid crystal layer 4 includes a horizontal alignment mode, and the horizontal alignment mode refers to that in the initial state, the positive liquid crystal molecules in the liquid crystal molecules of the liquid crystal layer 4 are all nearly parallel to the front glass substrate 3 and the rear glass substrate 5 are arranged, that is, the negative liquid crystal molecules in the liquid crystal molecules are arranged at an angle of 0.5 to 2 degrees or -0.5 to -2 degrees with the front glass substrate 3 and the rear glass substrate 5 . Under the action of the liquid crystal alignment layers of the front glass substrate 3 and the rear glass substrate 5, the projection directions of the positive liquid crystal molecules on...

Embodiment 3

[0064] The difference between this embodiment and Embodiment 1 lies in that the alignment modes of the liquid crystal molecules in the liquid crystal layer 4 are different.

[0065] In this embodiment, the alignment mode of the liquid crystal molecules of the liquid crystal layer 4 includes a conventional twisted orientation mode, and the conventional twisted orientation mode refers to that in the initial state, the positive liquid crystal molecules in the liquid crystal molecules of the liquid crystal layer 4 are on the front glass substrate 3 90 degree or -90 degree twisted arrangement with rear glass substrate 5 . The projection of the positive liquid crystal molecules on the plane of the front glass substrate 3 forms an angle of 0 degree, 90 degree or -90 degree with the front polarizer 2 . In this mode, the optical path difference range of the liquid crystal layer 4 is 375nm≤∆nd≤575nm or 900nm≤∆nd≤1200nm. In this embodiment, the central value of the optical path differen...

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PUM

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Abstract

An automatic anti-glare automotive electronic rearview mirror, comprising a housing, a front glass substrate (3) disposed on the housing, a rear glass substrate (5), a front polarizer (2), and a reflective rear polarizer (6). A liquid crystal layer (4) is disposed between the front glass substrate (3) and the rear glass substrate (5). The front polarizer (2) and the rear reflective polarizer (6) are respectively disposed at outer sides of the front glass substrate (3) and the rear glass substrate (5). A glass cover (1) is provided at an outer side of the front polarizer (2). Liquid crystal alignment layers are disposed on opposing sides of the front glass substrate (3) and the rear glass substrate (5), and the liquid crystal layer (4) is located between the liquid crystal alignment layers of the front glass substrate (3) and the rear glass substrate (5). The alignment direction of liquid crystal molecules in the liquid crystal layer (4) of the automatic anti-glare automotive electronic rearview mirror is adjusted by biasing transparent electrically conductive layers of the front glass substrate (3) and the rear glass substrate (5), thereby adjusting the polarization state of incident and reflected light, so as to realize, by means of the front polarizer (2) and the rear reflective polarizer (6), control of the intensity of the reflected light of the rearview mirror, such that the response time of the rearview mirror is greatly reduced, and an improved anti-glare effect is achieved in a timely manner.

Description

technical field [0001] The invention relates to the technical field of automobile rearview mirrors, in particular to an automatic anti-glare automobile electronic rearview mirror. Background technique [0002] With the increasing safety and comfort of automotive products, the development of automatic anti-glare rearview mirror technology has gradually gained market attention. [0003] Generally speaking, the automatic anti-glare rearview mirror installed in the car (and / or outside the car) adopts an electrochromic technical solution. The structure of the electrochromic lens is formed by filling the electrochromic solution between two pieces of glass with conductive function. In a normal state, the cathode in the electrochromic solution is in a colorless oxidized state, and the anode is in a slightly yellowish normal state. For example, when the conductive layer is supplied with a DC bias voltage, the cathode receives electrons from the negative pole of the power supply and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R1/08G02F1/13G02F1/1335
CPCB60R1/088G02F1/1313G02F1/133528
Inventor 郭建新
Owner HUIZHOU DESAY SV AUTOMOTIVE
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