RU2748197C1 - Mobile display (options) - Google Patents

Abstract

FIELD: technology.

SUBSTANCE: mobile display is designed to inform people by creating a dynamic and static image in the window of a vehicle, mobile kiosk or store. The mobile display has an adhesive that fills the space between the window surface and 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 back wall of the display, which is a heat conductive an elastic sheet, and also contains two flexible electrical films with controlled variable light transmittance or two glasses with controlled variable light transmittance, located in front of the LCD matrix and behind the LCD matrix. In addition, as an option, the mobile display may have one variable light transmittance controlled electrical film or variable light transmittance controlled glass sandwiched between a transparent adhesive layer and an LCD matrix, or one flexible variable light transmittance controlled electrical film or variable light transmittance controlled glass. located between the LCD matrix and the flexible light guide and light scattering panel.

EFFECT: expanding the functionality of the display, improving the image quality by introducing electric films with controlled variable light transmittance or glasses with controlled variable light transmittance into the design of a mobile display to reduce heating of the device and use reflected light from outside to illuminate the LCD matrix.

3 cl, 9 dwg

Description

The device is designed to inform people - bystanders, 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, requiring 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 reproduced 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 along the perimeter with 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.

A common disadvantage of the above designs [4] and [6] is the insufficient brightness of the image due to light interference (bright sunlight) in the case of using the LCD matrix.

The purpose of the invention is to expand the functionality of the display, improve the image quality due to:

1. introduction of electric films with controlled variable light transmittance or glasses with controlled variable light transmittance [7] into the design of a mobile display to reduce heating of the device and use reflected light from outside to illuminate the LCD matrix.

The device can be implemented using available LCD, OLED and other types of matrices for image formation.

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.

Since the mobile display has an LCD or OLED matrix in its construction, strong heating of these elements leads to the appearance of dark spots or other defects that can affect the image quality. To prevent the occurrence of such defects, electrical films with controlled variable light transmittance or glass with controlled variable light transmittance are used.

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 display made on the basis of an LCD matrix with a front (direct) backlight.

FIG. 8 shows the second version of the display with the edge (edge) backlight of the LCD matrix.

FIG. 9 shows a third embodiment of an OLED display.

In Figures 1-2, 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 3-9, the components of the display (1) are indicated as follows:

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

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.

1.4b - a flexible extended light source located along the perimeter of the panel 1.2, consisting of a large number of point light sources attached to the heat sink surface of the base 1.5.

1.4c - external flexible electric film with controlled variable light transmittance or glass with controlled variable light transmittance, located in front of the LCD matrix 1.1.

1.4g - inner flexible electric film with controlled variable light transmittance or glass with controlled variable light transmittance, located behind the LCD matrix 1.1.

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

1.6 - display frame.

1.7 - OLED-matrix, forming an image using

organic light-emitting diodes (OLED - organic light-emitting diodes).

1.7a - flexible electrical film with controlled variable light transmittance or glass with controlled variable light transmittance, located in front of OLED matrix 1.7.

The adhesive and / or other transparent material (2) will fill the space between the face of the mobile display (1) and the window surface, which improves the image quality by eliminating reflections. The transparent layer (2) has a light refractive index close to the refractive index of the vehicle window material A.

A first embodiment of a mobile display is shown in FIG. 3 - 7, which shows its cross section. LCD matrix (1.1) located between two flexible electrical films with controlled variable light transmittance or glasses with controlled variable light transmittance (1.4v, 1.4g), placed on a light-scattering panel (1.2), followed by an optically transparent and / or defocusing layer (1.3 a-1.3e), 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 elastic sheet made, for example, of 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.

A second embodiment of a mobile display is shown in FIG. 8.LCD matrix (1.1 located between two flexible electrical films with controlled variable light transmittance or glasses with controlled variable light transmittance (1.4v, 1.4g), placed on a light-guiding and light-scattering panel (1.2), the ends of which are equipped with an extended light source (1.4b) along the perimeter of the panel 1.2 An extended light source (1.4b) is attached to the reflective heat sink surface of the base 1.5.

The third version of the mobile display, made on the basis of a flexible OLED matrix (1.7), on which there is a flexible electrical film with a controlled variable light transmission or glass with a controlled variable light transmission (1.7a), as shown in Fig. 9, includes the rear wall of the display (1.5), which is a thin elastic sheet that ensures the safety of the matrix screen from damage from the rear side.

The mobile display works as follows. In the off state or in standby mode, both electrical films with controlled variable light transmittance or glass with controlled variable light transmittance (1.4v, 1.4g) are turned off and do not transmit light from the outside into the product structure, preventing the structure from heating up from sunlight. When the product is turned on, the outer film or glass (1.4c) turns on, light from the outside passes through the LCD matrix (1.1), on which an image is formed on the front surface of the display (1), and is reflected back from the turned off inner film or glass (1.4g), obtained the image through the transparent layer (2) and the vehicle window A is transmitted for perception to observers outside. In this case, the backlight (1.4b) has an auxiliary function, additionally highlighting the image.

In the dark, when the device is turned on, both films or glasses (1.4v, 1.4g) are turned on, allowing the backlight (1.4b) to unimpededly illuminate the formed image on the LCD matrix (1.1)

A layer of transparent glue and / or other transparent material (2) serves to eliminate an air gap between the display matrix screen and the window, which improves the image quality by eliminating light reflections between the display and window surfaces.

Used sources:

1. Screens on Samsung Trucks Save Lives

https://galaxystore.ru/news/ekrany-na-gruzovikakh-samsung-spasayut-zhizni/

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

https://www.trinitynewsdaily.com/ifa-2015/3678/

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

7. Smart glass

https://ru.wikipedia.org/wiki/%D0%A3%D0%BC%D0%BD%D0%BE%D0%B5_%D1%81%D1%82%D0%B5%D0%BA%D0 % BB% D0% BE

Claims (3)

1. A mobile display containing an adhesive composition that fills the space between the window surface and a liquid crystal matrix placed on a light guide and light diffusing 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 heat-conducting elastic sheet, characterized in that it contains two flexible electrical films with controlled variable light transmittance or two glasses with controlled variable light transmittance, located in front of the LCD matrix and behind the LCD matrix. 2. A mobile display containing an adhesive filling the space between a window surface and a liquid crystal matrix placed on a light guide and light diffusing panel, followed by an optically transparent defocusing layer and a light emitting matrix consisting of light sources attached to the reflective surface of the back wall of the display, which is a heat-conducting resilient sheet, characterized in that it contains one electrical film with controlled variable light transmission or glass with controlled variable light transmission, located between a layer of transparent glue and an LCD matrix. 3. A mobile display containing an adhesive filling the space between the window surface and a liquid crystal matrix placed on a light guide and light diffusing 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 heat-conducting resilient sheet, characterized in that it contains one flexible electrical film with controlled variable light transmittance or glass with controlled variable light transmittance, located between the LCD matrix and the flexible light-conducting and light-scattering panel.

Images