The embodiment of the invention discloses a display screen, an automobile, a backlight module and a control method of the backlight module, relates to the technical field of display, and aims at improving the lighting effect of a vehicle-mounted central control screen and reducing white light pollution. The backlight module comprises a light source, a light guide plate and a light field conversion device comprising a first microprism film, a dimming assembly and a second microprism film. The first microprism film comprises a plurality of first microprisms which gather scattered light emitted by the light guide plate and then guide the gathered scattered light out. And the second microprism film comprises a plurality of second microprisms for dimming the emergent light of the dimming assembly. The dimming assembly is configured in the mode that in the first dimming state, light emitted by the first microprism film is scattered and then guided out, and light emitted by the second microprism film forms a first light field with the maximum brightness center located over the light guide plate. In the second dimming state, scattered light emitted by the first microprism film is guided out, and light emitted by the second microprism film forms a second light field with the maximum brightness center located on the first side of the maximum brightness center of the first light field.
本申请实施例公开了一种显示屏、汽车、背光模组及其控制方法,涉及显示技术领域,提高了车载中控屏的光效及减少产生白亮污染。背光模组包括光源、导光板及包括第一微棱镜膜、调光组件及第二微棱镜膜的光场转换装置。第一微棱镜膜包括将导光板出射的散射光汇聚后导出的多个第一微棱镜。第二微棱镜膜包括对所述调光组件出射光线进行调光的多个第二微棱镜。调光组件配置为:第一调光状态下,将第一微棱镜膜出射的光线散射后导出,使经第二微棱镜膜出射的光线形成最大亮度中心位于导光板正上方的第一光场。第二调光状态下,将第一微棱镜膜出射的散射光导出,使经第二微棱镜膜出射的光线形成最大亮度中心位于第一光场的最大亮度中心第一侧的第二光场。
Display screen, automobile, backlight module and control method of backlight module
一种显示屏、汽车、背光模组及其控制方法
2023-12-29
Patent
Electronic Resource
Chinese
IPC: | G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Backlight module, display screen, rearview mirror, and vehicle
European Patent Office | 2024
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