The invention discloses a head-up display device based on partition design, a head-up display method and a vehicle-mounted system, and relates to the technical field of head-up display design, the head-up display device does not need to independently design a backlight structure, the size of the head-up display device is reduced, the head-up display device is provided with partition display areas, and retaining wall structures are arranged between the partition display areas. According to the head-up display device, stray light caused by crosstalk of light source light of different display areas is avoided, the light source light output independence is guaranteed, and therefore the display effect of a follow-up head-up display image is guaranteed, a directional guide-in unit is adopted for controlling the light source light to be emitted according to different light emitting angles, the light source light is transmitted through an optical waveguide unit, and the display effect of the head-up display image is improved. Therefore, the images displayed in the subareas are not overlapped, panoramic depth head-up display effects with different distances are brought to users, and the user experience is improved. Moreover, the head-up display device which gives consideration to the size and the head-up display effect is installed in the vehicle-mounted system, and the problem that the current head-up display device is difficult to arrange in a real vehicle is solved.

本发明公开一种基于分区设计的抬头显示装置、抬头显示方法及车载系统，涉及抬头显示设计的技术领域，抬头显示装置不需单独设计背光结构，缩小了抬头显示装置的体积，设有分区显示区域，并且分区显示区域之间设有挡墙结构，避免不同分区显示区域的光源光线串扰形成杂散光，保证光源光线输出的独立性，从而保证后续抬头显示图像的显示效果，采用定向导入单元控制光源光线按不同的光线出射角度出射，通过光波导单元对光源光线进行传输处理，使得分区显示图像不重叠，为用户带来远近不同的全景深抬头显示效果，提升了用户体验。而且将兼顾体积尺寸及抬头显示效果的抬头显示装置安装于车载系统，解决了当前抬头显示装置实车布置困难的问题。