HUD (Head Up Display) front windshield of automobile

Abstract

The invention provides an HUD (Head Up Display) front windshield of an automobile, which relates to the filed of sandwich glass. The HUD front windshield provided by the invention comprises two layers of glass, two high polymer layers, a first substrate layer, a second substrate layer and a mixing layer between the first substrate layer and the second substrate layer; the structure layers of the front windshield are sequentially the first layer of glass, a high polymer layer, the first substrate layer, the mixing layer, the second substrate layer, another high polymer layer and the second layer of glass; the mixing layer comprises a smectic liquid crystal display isostere region and a peripheral polymer cementing layer; the thickness of the polymer cementing layer is the same as the thickness of the smectic liquid crystal display isostere; the smectic liquid crystal display isostere region is formed by mixing smectic liquid crystals and additives; and the spatial geometrical position of the smectic liquid crystal display isostere between the two substrate layers is an HUD display region. In the liquid crystal HUD provided by the invention, the information of the automobile is converted into electric signals through a display controller to control the liquid crystal arrangement state of each dot in a liquid crystal dot matrix on the front windshield so that the display of word and graph information is realized, and projection display equipment does not need to be additionally arranged.

Description

technical field [0001] The invention relates to the field of laminated glass, in particular to a front windshield laminated glass which uses liquid crystal to realize the function of an automobile HUD. Background technique [0002] HUD is the abbreviation of Head Up Display in English, which means "head up display", also known as head-up display system. The HUD used in the car uses the principle of optical reflection to project important car-related information on the front windshield through the projector. , the height is roughly at the same level as the driver's eyes, forming the HUD display area. The projected text and images are adjusted to the distance of infinite focal length. When the driver looks forward through the HUD, he can easily compare the external scene with the The information displayed on the HUD is fused together. The advantages of this display system are: 1. The driver can see the information without looking down, so as to avoid distracting the road ahea...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN10147028A discloses a smectic liquid crystal display device, which includes a smectic liquid crystal display, a drive control device, a battery and a solar receiver, the smectic liquid crystal display, a drive control device, a battery, and a solar receiver connected in sequence, wherein: the smectic liquid crystal display includes a first base layer and a second base layer, a mixed layer is arranged between the first base layer and the second base layer, and the mixed layer is smectic liquid crystal and A smectic liquid crystal display array formed by mixing additives, a first conductive electrode layer is provided on the side of the first base layer facing the mixed layer, and a second conductive electrode is provided on the side of the second base layer facing the mixed layer Layer, the first conductive electrode layer is composed of M strip electrodes arranged in parallel, the second conductive electrode layer is composed of N strip electrodes arranged in parallel, the M strip electrodes of the first conductive electrode layer are connected with the second conductive electrode The N strip electrodes of the layer are perpendicular to each other, so that the first and second conductive electrode layers form an M×N pixel array, and the first and second conductive electrode layers are connected to the drive control device, but this technology does not Provides a solution for the extraction of electrodes for the front glass of the car, the optical deformation near the border of the display area, and the integrated appearance of the appearance, so this technology cannot be directly used on the front windshield of the car

[0005] WO2007122427 discloses a switchable liquid crystal display car laminated glass, which has a structure of a liquid crystal film sandwiched between two pieces of glass, and a high molecular polymer layer sandwiched between the liquid crystal film and the glass, but this technology only provides one for projection The display background area of ​​the image projected by the instrument, and there are also the aforementioned technical problems

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