RU202859U1 - Mobile display - Google Patents

Abstract

The mobile display is a hardware part of the Mobile Information System [5] and is designed to inform people by creating a dynamic and static image in the window of a vehicle, mobile kiosk or store. For this, the display is preformed without damaging its components and distorting the reproduced image. The front side of the display is connected to the window surface with an adhesive and / or other transparent material to completely eliminate the air gap and improve the image quality. For the option of using the LCD matrix, a filled with optically transparent material and / or an empty gap is created between the light source and the light guide and light diffusing panel to improve image quality.

Description

The utility model is designed to inform people - outside observers, by creating a static or dynamic image in the windows of a vehicle, mobile kiosk, store or other object.

Known mobile display, integrated into the Samsung Safety Truck [1], consisting of four large screens installed in one plane on the rear doors of the truck. Rearward facing screens show the road in front of the truck at eye level with the driver of the passenger car following the truck. This device informs drivers about the traffic situation in front of the truck, which is hidden from him. The disadvantages of this device are the high cost and power consumption of a large screen area, and the need to clean the screen from road pollution.

Known thin double-sided display "Two-Sided OLED TV" [2], designed to form images on both sides of the screen. The disadvantage of this device is its high cost due to the use of OLED matrices.

In terms of structure and design, the closest to the claimed device is a curved display [3], the edges of which are curved towards the observer for better image perception, but structurally made as a rigid panel that does not provide for adaptation to the curved surface of a vehicle window or shop window.

Known mobile display [4] (Patent for invention RU 2671053), which is a multilayer structure having a plastic adhesive lens on the front side, which serves to fill the space between the display screen and the curved window of the vehicle (store or kiosk), as well as for attaching display to the window surface. The disadvantage of this device is the low manufacturability of the design, which requires the manufacture of a laborious additional element (lens).

The mobile display is a hardware part of the Mobile Information System [5] (patent for invention RU 2659956) and is designed to inform people by creating a dynamic and static image in the window of a vehicle, mobile kiosk or store.

For this, the display is made of thin sheet components, fastened around the perimeter with a material. It is pre-shaped to match the surface of the window without damaging its components and distorting the displayed image. The front side of the display is bonded to the window surface with an adhesive and / or other transparent material to completely eliminate air gaps and improve image quality.

Also known is a mobile flexible display [6] (Patent for invention RU 2664822 Mobile flexible display), consisting of thin sheet components fastened around the perimeter by an elastic frame, which allows elastic deformation and displacement of the edges of the multilayer structure of the display without damaging its components and distortions that are critical for perception of the reproduced image. The disadvantage of this device is the loose fit of the display to the windows of vehicles and shop windows with an uneven bend.

A common disadvantage of the above structures [4] and [6] is the unevenness of the image brightness due to the adherence of the light source to the light guide and light-scattering panels in the case of using the LCD matrix.

The purpose of the utility model is to improve image quality by:

1. creating a transparent layer between the vehicle window and the display, consisting of glue and / or other material to completely eliminate the air gap.

2. creating a gap between the light source and the light guide and light scattering panel, in which there can be an optically transparent and / or defocusing medium providing uniform image brightness for the variant using an LCD matrix.

The device can be implemented using available LCD matrices for image formation.

FIG. 1 shows an example of placing a mobile display inside a vehicle. The display is located on the inside of the window.

FIG. 2 is a rear view from the inside of the vehicle.

FIG. Figures 3-7 show a cross-sectional view of a LCD display with direct backlighting.

In Figures 1 and 2, the following designations are adopted:

A - a vehicle, in this case a passenger car.

1 - mobile display.

2 - a layer of transparent glue and / or other transparent material.

In Figures 3-7, the components of the display (1) are indicated as follows:

1.1. - Liquid crystal (LCD) matrix that forms an image.

1.2 - flexible light guide and light scattering panel.

1.3а - space filled with gas / vacuum

1.3b - space filled with transparent material

1.3v - separate diffusing lenses for each light source

1.3g - lenses for each light source, made in the form of a single plate

1.3d - Fresnel lens or other flat diffusing lens

1.4a - a light source in the form of a 2n matrix from a large number of point sources, for example, LEDs, attached to the mirror surface of a flexible base 1.5.

1.5 - base, which is the back wall of the display.

1.6 - display frame.

2 - a layer of transparent glue and / or other material.

The phrase "image quality" means a combination of characteristics of an image obtained from a display device, in this case from a mobile display mounted on glass, which are brightness, brightness uniformity, image contrast and viewing angle of the image from the display device, as well as the absence of optical effects. arising, for example, from internal reflection of light, diffuse reflection of light, interference, diffraction, effects arising from the passage of light through media with different refractive indices and interfering with the perception of the image from the display device.

An adhesive and / or other transparent material (2) fills the space between the face of the mobile display (1) and the window surface, which improves image quality by reducing the effects that occur when light passes through media with different refractive indices. The transparent layer (2) has a refractive index of light close to the refractive index of the vehicle window material A than air, only due to the fact that its density is obviously higher than that of air. The adhesive and / or other transparent material (2) allows the mobile display to be fixed to the vehicle window, especially if it is a curved rear windshield of the vehicle, and allows the mobile display, the elements of which are elastic, to take the maximum possible shape, conforming to the shape of the vehicle glass, which increases the viewing angle of the image displayed on the mobile display.

An embodiment of a mobile display is shown in FIG. 3-7, which shows its cross section. LCD matrix (1.1) placed on a light-scattering panel (1.2), followed by an optically transparent and / or defocusing layer (1.3a-1.3d), then a light-emitting matrix (1.4a), consisting of a large number of light sources, for example, LEDs attached to the reflective surface of the rear wall of the display (1.5), which is a heat-conducting resilient sheet made, for example, of a metal with a reflective surface on the side of the light-emitting matrix (1.4a). its back surface has a high emissivity to efficiently radiate the heat generated by the light source (s).

The optically transparent and / or defocusing layer (1.3a-1.3e) can be made in the form of a combination of the methods shown in the figures: a space filled with gas / vacuum and / or transparent material and / or diffusing lenses made in the form of a single plate or separately and / or a flat diffusing lens and / or other methods of defocusing light and / or filling space. An optically transparent and / or defocusing layer improves image quality by providing uniform illumination of the image or by changing the direction of the light flux of the light source.

The mobile display works as follows. The matrix screen forms an image on the front surface of the display (1). The image is transmitted through the transparent layer (2) and the vehicle window A for perception by observers outside. A layer of transparent glue and / or other transparent material helps to absorb vibrations from the vehicle onto the display matrix, and also removes gaps in the structure, eliminating possible noise.

Used sources:

1. Screens on Samsung Trucks Save Lives

2. LG Unveils the Two-Sided 111-Inch OLED TV at IFA 2015

3.EP 2 730 966 A1, Curved liquid crystal display device.

4. RU 2671053, Mobile display

5. RU 2659956, Mobile information system

6. RU 2664822, Mobile flexible display.

Claims (1)

A mobile display comprising a liquid crystal matrix placed on a light guide and light scattering panel, followed by an optically transparent defocusing layer and a light emitting matrix consisting of light sources attached to the reflective surface of the rear wall of the display, which is a thermally conductive resilient sheet, characterized in that said the components of the mobile display are shaped to match the surface of the glass on which the mobile display is mounted using a transparent adhesive.

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