A liquid crystal display module for a two-seat cockpit

Abstract

The application discloses a liquid crystal display module for a two-seat cockpit, in which a Fresnel lens is set in the optical cavity, the surface of the liquid crystal panel is treated with anti-reflection, and a high-power three-primary-color LED light source and a low-power three-primary-color LED are used The light source and the drive circuit respectively control the luminous intensity of the high and low power LEDs in each area. Beneficial effects of the present application: it can meet the different needs of users who use night vision devices and users with naked eyes at the same time. It can not only meet the needs of night vision compatibility, but also meet the needs of naked-eye viewing. Under certain circumstances, it can also meet the needs of users with lower power consumption, which is more energy-saving.

Description

technical field [0001] The application relates to the field of liquid crystal display technology, especially a night vision compatible liquid crystal display module used in a two-seater cockpit and meeting the needs of two users at the same time. Background technique [0002] Liquid crystal display has become the mainstream display technology. Displays used in special occasions, such as display modules in aircraft cockpits, have some special requirements. Mainstream display modules cannot meet these special requirements and need further improvement. [0003] In the two-seat cockpit of an aircraft, there are often two operators working at the same time. In the night environment, one user not only needs to observe the environment outside the cockpit through the head-mounted night vision device, but also often watches the content of the display module; the other The user operates with naked eyes and mainly watches the display content of the display module. If a common display...

AI Technical Summary

Problems solved by technology

If a common display module is used, the naked eye user can see the correct image, but the red light and infrared light emitted by the display module interfere with the work of the night vision device, and the user wearing the night vision device cannot see the correct image

In the Chinese patent with the application number CN201510608423.6 and the name "a display device", in order not to interfere with the night vision device, the red light and infrared light emitted by the display module are suppressed. Although this display module will make the night vision device user Satisfied, but naked-eyed users can’t see the correct image, and users can’t get the correct information, which may lead to misoperation and accidents

[0004] In order to enable users to see the content on the display screen under direct sunlight at noon, more than 4,000 LED light sources are used in the Chinese patent application number CN201610089489.3 titled "An Outdoor High-Brightness LCD Screen". Increase the maximum brightness of the display screen, but when a large number of LEDs work at the same time, it will generate a lot of heat, and it is difficult to dissipate heat. Especially in the case of high ambient temperature, the LED itself generates a lot of heat, which makes the internal temperature of the display screen Higher, resulting in a decrease in LED luminous efficiency, shortening the life of the LED, and increasing the failure rate of the circuit

[0005] Currently, the liquid crystal display module used in the two-seat cockpit of an aircraft mainly has the following problems: under the use environment at night, the existing liquid crystal display module of the two-seat cockpit cannot simultaneously meet the needs of the head-mounted night vision device user and the naked-eye user; In the environment of direct sunlight during the day, the power of the liquid crystal display module is too large, it is difficult to dissipate heat, the temperature inside the liquid crystal display module is too high, and the failure rate is high

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