Method and device for using natural light as backlight source of liquid crystal display by using convex lens and light guide plate
The convex lens and light guide plate concentrate natural light into the backlight of the liquid crystal display, solving the problems of high energy consumption and harmful blue light in traditional backlight sources, and achieving low energy consumption and environmentally friendly display effects.
Patent Information
- Application Number
- CN202410863696.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional LCD displays use electrically driven light-emitting devices as backlight sources, increasing energy consumption and potentially producing harmful blue light, which is not good for users' vision, and lacks environmentally friendly and energy-saving backlight solutions.
Convex lenses and light guide plates are used to concentrate and evenly distribute natural light into the backlight source of the liquid crystal display, and dynamically adjust the backlight brightness and uniformity by adjusting the position and angle of the convex lenses.
It reduces the energy consumption of equipment, reduces the impact of harmful blue light on vision, improves the display effect, and at the same time, it uses pollution-free and endless natural light as the backlight source, which has important environmental protection and economic value.
Smart Images
Figure CN119291957A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of liquid crystal display, in particular to a method and a device thereof for using natural light as a backlight source of a liquid crystal display by using a convex lens and a light guide plate. Background Art
[0002] Traditional LCDs usually use light-emitting devices driven by electrical energy as backlight sources, which not only increases the energy consumption of the device, but also may produce blue light that is harmful to the eyes. With the improvement of environmental awareness and the need for energy conservation and emission reduction, exploring new backlight sources has become a research hotspot. Natural light, as a pollution-free and inexhaustible energy source, will have important environmental significance and economic value if it can be effectively used as the backlight source of LCDs. Summary of the invention
[0003] The purpose of the present invention is to provide a method and device for using natural light as a backlight source for a liquid crystal display using a convex lens and a light guide plate, aiming to reduce the energy consumption of the equipment, reduce the impact of harmful blue light on the user's vision, and improve the display effect.
[0004] To achieve the above object, the present invention adopts the following technical solutions: A method for using a convex lens to gather natural light as a backlight source for a liquid crystal display screen comprises the following steps: 1. One or more convex lenses are arranged on the back of the liquid crystal display. The convex lenses can be moved through the upper and lower guide rails of the display to adjust the focus position and angle.
[0005] 2. Place the monitor in an environment with sufficient natural light so that natural light can shine on the convex lens.
[0006] 3. Through the focusing effect of the convex lens, natural light is gathered and directed onto a light guide plate.
[0007] 4. The light guide plate evenly distributes the gathered natural light on the back of the LCD screen as a backlight source.
[0008] 5. According to the changes in ambient light, the focal length is changed by adjusting the position of the convex lens on the guide rail through the control device, so as to realize dynamic adjustment of the backlight brightness and uniformity. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Attached Figure 1 This is a system structure diagram of the method and device of the present invention, showing how to use a convex lens to focus natural light and transmit it to a light guide plate to serve as a backlight source for a liquid crystal display. The following is a detailed description of each component in the figure:
[0010] LCD: Liquid Crystal Display Panel.
[0011] Convex lens: Set on the back of the monitor, move through the upper and lower guide rails to adjust the focus position and angle.
[0012] Light guide plate: Located on the back of the LCD panel, it receives the natural light gathered by the convex lens and distributes it evenly on the back of the LCD panel.
[0013] Convex lens upper and lower guide rails: used to support and adjust the position and angle of the convex lens.
[0014] Display screen circuit board and wiring: Receive the display image information of the display screen and control the movement of the convex lens on the guide rail to adjust the backlight brightness and uniformity. DETAILED DESCRIPTION
[0015] As shown in FIG1 , a convex lens is mounted on the back of the display and can be moved by upper and lower rails to install the light guide plate close to the back of the LCD screen. When the display is in an environment with sufficient natural light, the natural light will be focused by the convex lens and directed to the light guide plate, and the light guide plate will evenly distribute the light on the back of the LCD panel as a backlight source. The control device receives the signal of the ambient light sensor or other input signals, and automatically adjusts the position of the convex lens on the rail to achieve dynamic adjustment of the backlight brightness and uniformity.
Claims
1. A method for using natural light as a backlight source for a liquid crystal display using a convex lens and a light guide plate, characterized in that: It includes setting one or more convex lenses on the back of the liquid crystal display. The convex lenses move through upper and lower guide rails to adjust the focus position and angle, gather natural light and guide it to a light guide plate. The light guide plate evenly distributes the natural light on the back of the liquid crystal display as a backlight source, and adjusts the position of the convex lenses according to changes in ambient light through a control device.
2. The method according to claim 1, characterized in that The control device controls the movement of the convex lens on the guide rail by receiving the signal of the ambient light sensor or other input signals, thereby realizing dynamic adjustment of the backlight brightness and uniformity.
3. A device for using natural light as a backlight source for a liquid crystal display using a convex lens and a light guide plate, characterized in that: The invention comprises a liquid crystal display screen, a convex lens arranged on the back of the display screen, a light guide plate located on the back of the liquid crystal display panel, upper and lower guide rails for supporting and adjusting the position of the convex lens, and a control device connected to the upper and lower guide rails, wherein the control device receives a signal from an ambient light sensor or other input signals to control the movement of the convex lens on the guide rail.