DE102023117886A1 - display system - Google Patents

Abstract

The invention relates to a display system for a vehicle (1) for displaying display contents (14a, 14b, 16a, 16b), wherein the vehicle (1) has a window which can be divided into two display areas (4a, 4b), wherein the display system has an image generator (6), wherein a first display area (4a) has a height, wherein the image generator (6) can be divided into two image areas (10a, 10b), wherein a first brightness is to be set for a first image area (10a) and a second brightness is to be set for a second image area (10b), wherein the second image area (10b) is to be set brighter than the first image area (10a), wherein a first original display content (14a) is to be positioned on the first image area (10a) and a second original display content (14b) on the second bright image area (10b), wherein the image generator (6) is designed to position the first original display content (14a) from the first image area (10a) to the first display area (4a) and the second original display content (14b) from the second bright image area (10b) to a second display area (4b), wherein the pane is designed to reflect the first original display content (14a) emitted onto it from the first display area (4a) and the second original display content (14b) emitted onto it from the second display area (4b) into an interior of the vehicle (1).

Description

The invention relates to a display system and a method for displaying display contents.

The publication DE 10 2012 204 303 A1 describes a display with segmented brightness gradient for a head-up display (HUD).

A display with a lighting matrix of different brightness for a HUD is described in the publication DE 10 2014 214 767 B4 known.

In the printed publication DE 10 2019 008 744 A1 A display with a brightness mask is described.

From the publication WO 2018/206499 A1 A vehicle display with variable brightness is known.

Against this background, one task was to present display content appropriately to a vehicle occupant.

This object is achieved by a display system and a method having the features of the independent patent claims. Embodiments of the display system and the method emerge from the dependent patent claims and the description.

The display system according to the invention is intended for a vehicle, for example a motor vehicle, and is designed to display a virtual display content. The vehicle has a pane, usually for a window of the vehicle, which according to an embodiment of the display system can be divided, split and/or split into two display areas. The display system has an imager. A first display area can be arranged, arranged and/or arranged on the pane of the vehicle and has a limited, usually vertical, height along a vertical axis of the vehicle. The imager can be divided, split and/or split into two image areas. A first brightness can be set or adjusted for a first image area and a second brightness for a second image area, the second image area being set or adjusted and/or designed or designed to be brighter than the first image area and the first image area being set or adjusted and/or designed to be darker than the second image area. In this case, a first original display content is to be positioned, can be positioned and/or positioned on the first dark or darker image area and a second original display content is to be positioned on the second light or lighter image area. The imager is designed to emit the first original display content from the first dark image area onto the first display area and the second original display content from the second light image area onto a second display area of the pane. The pane is designed to reflect the first original display content emitted and incident on it from the first display area as the first virtual display content and the second original display content emitted and incident on it from the second display area as the second virtual display content into an interior of the vehicle and to display it to an occupant.

In one embodiment, the two image areas of the image generator form a connected display field. The first original display content is generated and/or provided by the first image area or a first section of the display field and the second original display content is generated and/or provided by the second image area or a second section of the display field. It is possible for both display contents to be set and/or displayed to be the same brightness or darkness. It is also possible for the first display content to be displayed and/or set to be darker than the second display content or for the second display content to be displayed and/or set to be brighter than the first display content.

Alternatively or additionally, the display system has at least one background lighting or backlight, which is assigned to the at least one image area, is usually arranged below or behind it and is integrated into the image generator. When the display system is in operation, the at least one image area is illuminated by the at least one background lighting or is set to a light intensity that can be set or adjusted for this purpose or to the corresponding brightness of the light.

It is conceivable that the display system has only one background lighting, which is assigned to or is allocated solely to the second image area and is designed to illuminate only the second display content or the second image area, usually brightly, from below or from behind. In contrast, no background lighting is assigned to the first image area or the first display content, whereby the first image area or display content is or remains unlit from below or from behind.

In a further embodiment, the first image area has a first background lighting and the second image area has a second background lighting, wherein it is provided that a or the first brightness is to be set for the first background lighting and a or the second brightness is to be set for the second background lighting. bar and/or is or will be set, whereby the first backlight is or will be darker than the second backlight and the second backlight is or will be set, adjustable and/or adjusted accordingly brighter than the first backlight.

It is possible for the first backlight to be arranged, can be arranged and/or will be arranged under or behind the first image area or the first section of the display panel and the second backlight to be arranged, can be arranged and/or will be arranged under or behind the second image area or the second section of the display panel. In this case, it is provided that the first backlight is designed to illuminate the first image area and/or the first display content darkly or darker than the second image area and/or the second display content. The second backlight is designed to illuminate the second image area and/or the second display content brightly or brighter than the first image area and/or the first display content.

The display system has an electronic control device or an electronic control unit which is designed to adjust the brightness or darkness of the display contents, the image areas, generally the at least one background lighting provided for this purpose and/or the display areas, generally automatically. The at least one background lighting can have a single, homogeneously set brightness or light intensity. It is also possible for the at least one background lighting, i.e. only one background lighting or two background lightings, to have at least two zones of different brightness or to be illuminated with different brightness for the two image areas and/or display contents to be set to different brightness.

It is possible for the first display area to be arranged on, in and/or on an upper section of the window or above the second display area or alternatively on, in and/or on a lower section of the window or below the second display area. The display system is intended for a window of the vehicle designed as a windshield or front window, whereby the display system also has the window or the display areas provided for it. The first display area is designed or can be described as black print and is generally opaque or non-transparent. In contrast, the second display area is clear or transparent.

The method according to the invention is intended for displaying a display content with a display system for a vehicle, for example an embodiment of the display system presented. The vehicle has a window that is divided into two display areas. The display system has an image generator. A first display area is arranged on the window of the vehicle, the first display area having a height, usually vertical, along a vertical axis of the vehicle. The image generator is divided into two image areas. A first brightness is set for a first image area and a second brightness is set for a second image area, the second image area being set brighter than the first image area, the first image area being set and/or formed dark and the second image area being set and/or formed bright in comparison to the first image area. In addition, a first original display content is positioned or arranged on the first dark image area and a second original display content on the second bright image area. The first original display content is emitted or radiated by the image generator from the first dark image area to the first display area and the second original display content is emitted or radiated from the second bright image area to a second display area of the window. Furthermore, the first original display content emitted from the window onto the window or onto the first display area is reflected from the first display area as the first virtual display content and the second original display content emitted from the window onto the window or onto the second display area is reflected from the second display area as the second virtual display content into an interior of the vehicle.

Typically, the second original display content and/or the second image area is set to be brighter than the first original display content and/or the first image area and/or is illuminated more brightly.

In an embodiment, a light intensity of light of a respective image area, a respective display content and/or a respective background lighting is automatically set and/or controlled, i.e. controlled and/or regulated, usually by the control unit. The higher or greater the brightness, light intensity or intensity of the light is set for the respective image area, the respective display content and/or the respective background lighting, the brighter it is set. Accordingly, the light for the second image area, for the second original display content and/or from the second background lighting has a higher or greater intensity or light intensity than the light for the first image area, for the first original display content. and/or from the first backlight.

The image generator or the display panel or display divided into two sections for generating the display content has two image areas that are or can be set to different brightnesses. The first display content is or is reflected from the first image area into the first display area and the second display content from the second image area into the second display area.

The at least one backlight has a matrix of light elements, e.g. light-emitting diodes (LEDs). In this case, only one backlight can be assigned to the second image area. It is also possible for both image areas to be assigned a common controllable backlight with two sections, with a second section for the second image area being set to be bright and a first section for the first image area being set to be dark. If the display system has its own backlight for each image area, the second backlight for the second image area is brighter than the first backlight for the first image area.

It is possible that the second section of the backlight or the second backlight for the second image area has a high density and/or number of light elements and the first section of the backlight or the first backlight for the first image area has a low density and/or number of light elements. When the display system is in operation, the second image area is brightly illuminated, backlit and/or through-lit by the at least one backlight from behind or from below. In contrast, the first image area is dark or darker or not illuminated at all or remains unilluminated.

It is possible to dynamically change or vary the spatial division of the image areas or the two sections of the imager's display field. As a rule, both image areas have an area that corresponds to the size of the imager's display field. If the first image area is enlarged, the second image area is reduced in size, with the image areas or brightnesses for the display areas being divided. The imager of the display system is used to generate or provide two display contents with different brightnesses, or display contents that are illuminated, through-lit and/or backlit with different brightnesses. Different brightnesses or light intensities are generated for the two display areas of the screen. The second brightness has a greater light intensity than the first brightness.

The vehicle can be equipped with at least one display system with at least one imager for reflecting display content of different brightnesses into display areas of the window of different brightnesses. The imager can have at least one backlight with which only one brightness or light intensity for the entire backlight can be set at any one time. It is also possible for at least two, possibly more than two, different brightnesses or light intensities for light to be distributed over the area of the backlight and/or set dynamically for the at least one backlight, the backlight being divided into zones of different brightnesses, with a bright zone being assigned to or illuminating the second image area, and a dark zone being assigned to or illuminating the first image area. A maximum brightness or light intensity can be set for the at least one backlight and/or zone.

In one possible embodiment, the first darker image area and/or the first darker background lighting has a luminous intensity of, for example, 5000 cd/m ² and the second brighter image area and/or the second brighter background lighting has a luminous intensity of, for example, 15,000 cd/m ^2. These two possible luminous intensities are high compared to a conventional display with a luminous intensity of 800 to 1000 cd/m ^2. However, this is necessary because only around 20% of the light that appears on the screen is reflected. A loss of luminous intensity of around 20% with such a reflection results in a virtual display content with a luminous intensity of 1000 cd/m ² in the first display area, which is designed as a black area, and a virtual display content with a luminous intensity of 3000 cd/m ² in the second, transparent display area.

It is possible for the first display area to be arranged on or in an upper section or a lower section, which has the limited, usually vertical, height along the vertical axis of the vehicle, of a pane designed as a windshield or front window. The first display area, which is black for example, can be arranged on the pane, for example as a coating, or integrated into the pane. The first display area is single-colored, usually printed in black and designed or referred to as black printing. The first display area can be gray, silver, another color, metallic, semi-transparent or semi-reflective or switchably transparent or reflective. The height of the first display area is legally limited in order to ensure a good view of the outside for the driver of the vehicle through the second, transparent display area of the window. Due to the higher light intensity of the light for the second original display content, the contrast of the second transparent display area can be increased and the surroundings of the vehicle can be better perceived.

It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

The invention is illustrated schematically by means of embodiments in the drawing and is described schematically and in detail with reference to the drawing.

1a , 1b , 1c , 1d each show, in a schematic representation, features of the embodiment of the display system according to the invention for carrying out an embodiment of the method according to the invention.

The figures are described in a coherent and comprehensive manner. The same reference symbols are assigned to the same components.

1a shows a schematic representation of a vehicle 1, designed here as a motor vehicle, the interior of which is delimited by a transparent pane designed as a windshield 2, among other things. In the vehicle 1 there is a person 9 as an occupant, of whom an eye 11 is shown here. This person 9 is a driver of the vehicle 1, who operates a steering wheel 3 of the vehicle 1 to steer.

Further details of the embodiment of the display system according to the invention provided for the vehicle 1 are also provided in the further 1b , 1c and 1d shown schematically. The display system here has a first display area 4a designed as a black print or colored black, which is arranged here on and/or on a first lower section of the otherwise transparent windshield 2 and covers the windshield 2 on and/or on this lower section so that it is opaque. In addition, the windshield 2 has a second translucent display area 4b, which is arranged here above the first display area 4a and forms a second section of the windshield 2, this second transparent section also being designed here as a component of the embodiment of the display system. The windshield 2 is inclined here at an acute angle relative to a forward direction of travel of the vehicle 1. The first display area 4a, which is black here, is vertically limited upwards along a vertical axis of the vehicle starting from a lower edge of the windshield 2 and has a limited vertical height.

In addition, the display system has an image generator 6, which is arranged here in a component, for example a dashboard and/or an instrument panel, which is located along the forward direction of travel of the vehicle 1 between a lower edge of the windshield 2 and the steering wheel 3. The image generator 6 is divided into a first image area 10a and a second image area 10b, wherein the first image area 10a is arranged in front of the second image area 10b along the forward direction of travel. The image generator 6 has an active or activatable display field 8 or display, which in 1b shown schematically.

As always 1c schematically shows, the first image area 10a has a first section of the display field 8 and a first background lighting 12a, which are assigned to one another. The first image area 10a is arranged on or in front of the first background lighting 12a. The second image area 10b has a second section of the display field 8 and a second background lighting 12b, which are assigned to one another. The second image area 10b is arranged on or in front of the second background lighting 12b. Furthermore, the display system has a control device with a 1c shown display electronics 20 for the imager 6, which is arranged here below the imager 6.

When carrying out the embodiment of the method according to the invention, the first image area 10a is designed to generate and/or provide a first original display content 14a, wherein the first backlight 12a is designed to backlight, transilluminate and/or illuminate the first image area 10a and the first original display content 14a with a first light that has a first brightness or intensity or luminous intensity. In addition, the second image area 10b is designed to generate and/or provide a second original display content 14b, wherein the second backlight 12b is designed to backlight, transilluminate and/or illuminate the second image area 10b and the second original display content 14b with a second light that has a second brightness or intensity or luminous intensity.

The first brightness or intensity of the light from the control unit is or will be lower as the second brightness or intensity of the light, wherein the first image area 10a and/or the first original display content 14a is darkly backlit by the first backlight 12a or by the first light of the first backlight 12a, and wherein the second image area 10b and/or the second original display content 14b is brightly backlit by the second backlight 12b or by the second light of the second backlight 12b. The first light of the first backlight 12a is darker than the second light of the second backlight 12b.

Furthermore, the first original display content 14a and the first darker light are emitted, radiated, reflected and/or projected from the first image area 10a, here exclusively, onto the first display area 4a on the first lower section of the windshield 2, wherein the first original display content 14a and the first darker light, which impinge on the first display area 4a, are reflected from the first display area 4a as the first virtual display content 16a into the interior of the vehicle 1 and are displayed to the person 9 or his eye 11 ( 1a) . Accordingly, the second original display content 14b and the second darker light are emitted, radiated, reflected and/or projected from the second image area 10b, here exclusively, onto the second display area 4b on the second upper section of the windshield 2, wherein the second original display content 14b and the second brighter light, which impinge on the second display area 4b, are reflected from the second display area 4b as a second virtual display content 16b into the interior of the vehicle 1 and are displayed to the person 9 or their eye 11 ( 1a) .

When the method is carried out, two display areas 4a, 4b with different brightness are created on the windshield 2. Light with a higher power is irradiated into the brightly lit second display area 4b than into the darker lit first display area 4a. In the design of the display system, the display electronics 20 or display electronics are arranged under the first image area 10a next to the second image area 10b, whereby heat input or heat load from the light in the second image area 10b and further in the second display area 4b is reduced and thermal management for the windshield 2 is also carried out. In addition, overall energy consumption can be reduced. In addition, a subjective visual impression of the second virtual display content 16b on the second transparent display area 4b can be improved.

REFERENCE SIGNS:

1

vehicle

2

windshield

3

steering wheel

4a, 4b

display area

6

imager

8

display field

9

person

10a, 10b

image area

11

Eye

12a, 12b

backlight

14a, 14b

original display content

16a, 16b

virtual display content

20

display electronics

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• DE 10 2012 204 303 A1 [0002]
• DE 10 2014 214 767 B4 [0003]
• DE 10 2019 008 744 A1 [0004]
• WO 2018/206499 A1 [0005]

Claims (9)

Display system for a vehicle (1) for displaying display contents (14a, 14b, 16a, 16b), wherein the vehicle (1) has a window which is to be divided into two display areas (4a, 4b), wherein the display system has an image generator (6), wherein a first display area (4a) has a height, wherein the image generator (6) is to be divided into two image areas (10a, 10b), wherein a first brightness is to be set for a first image area (10a) and a second brightness is to be set for a second image area (10b), wherein the second image area (10b) is to be set brighter than the first image area (10a), wherein a first original display content (14a) is to be positioned on the first image area (10a) and a second original display content (14b) is to be positioned on the second bright image area (10b), wherein the image generator (6) is designed to position the first original display content (14a) starting from the first image area (10a) onto the first display area (4a) and the second original display content (14b) starting from the second bright image area (10b) onto a second display area (4b), wherein the pane is designed to reflect the first original display content (14a) emitted onto it starting from the first display area (4a) and the second original display content (14b) emitted onto it starting from the second display area (4b) into an interior of the vehicle (1). display system according to claim 1 which has at least one backlight (12a, 12b) which is assigned to at least one image area (10a, 10b). display system according to claim 1 or 2 , in which the first image area (10a) has a first backlight (12a) and the second image area (10b) has a second backlight (12b), wherein a first brightness is to be set for the first backlight (12a) and a second brightness is to be set for the second backlight (12b), wherein the second backlight (12b) is to be set brighter than the first backlight (12a). Display system according to one of the preceding claims, which has a control device which is designed to adjust the brightness of the image areas (10a, 10b). Display system according to one of the preceding claims, wherein the first display area (4a) is arranged on an upper portion or a lower portion of the pane. Display system according to one of the preceding claims, for a pane designed as a windshield (2). Display system according to one of the preceding claims, wherein the first display area (4a) is designed as black print. Method for displaying a display content (14a, 14b, 16a, 16b) with a display system for a vehicle (1), wherein the vehicle (1) has a window which is divided into two display areas (4a, 4b), wherein the display system has an image generator (6), wherein a first display area (4a) has a height, wherein the image generator (6) is divided into two image areas (10a, 10b), wherein a first brightness is set for a first image area (10a) and a second brightness is set for a second image area (10b), wherein the second image area (10b) is set brighter than the first image area (10a), wherein a first original display content (14a) is positioned on the first image area (10a) and a second original display content (14b) is positioned on the second bright image area (10b), wherein the first original display content (14a) is displayed by the image generator (6) starting from the first image area (10a) onto the first display area (4a) and the second original display content (14b) is emitted by the image generator (6) from the second bright image area (10b) onto a second display area (4b), wherein the first original display content (14a) emitted onto the pane from the first display area (4a) and the second original display content (14b) emitted onto the pane from the second display area (4b) are reflected into an interior of the vehicle (1). procedure according to claim 8 in which the second original display content (14b) is set brighter than the first original display content (14a), and/or in which the second original display content (14b) is illuminated brighter than the first original display content (14a).

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