CN220155160U - Display device - Google Patents

Abstract

The embodiment of the present application discloses a display device, which includes a display screen, a backlight component, an optical component, and a controller; the backlight component is located on the back side of the display screen, and the optical component is located between the backlight component and the display screen; the backlight component includes With more than two backlight groups, the light beams emitted by the same backlight group can direct the display content of the display screen to the same viewing position through optical components. The light beams emitted by different backlight groups are directed to different viewing positions. Each viewing position is arranged along the height direction of the display screen. The controller is used to control the switch of each backlight group, and is also used to make the display screen display display content corresponding to the turned-on backlight group. The display device distributes the viewing positions up and down in space, so that the viewing content of the same viewer will not be affected when the same viewer moves in the horizontal direction, and the viewing experience is better.

Description

display device

Technical field

The present application relates to the field of display technology, and in particular, to a display device.

Background technique

With the upgrade of display technology, display devices are developing in a direction that allows multiple people to watch different contents on the same screen.

In the related art, the display device is configured to enable multiple people to watch different contents on the same screen in the transverse direction (horizontal direction). In other words, multiple viewing positions are arranged along the width direction of the display screen, and can be seen at different viewing positions in the width direction. The display content is different. In actual application scenarios, the same viewer usually moves horizontally, which will affect the viewer's viewing experience. For example, crosstalk occurs in the viewing content or the viewing content changes, resulting in a poor viewing experience.

Contents of the invention

Embodiments of the present application provide a display device that distributes viewing positions up and down in space through structural arrangements. Viewers at viewing positions with different spatial heights see different display contents. The same viewer does not see the same content when moving in the horizontal direction. It will affect the viewing content and provide a better viewing experience.

On the one hand, embodiments of the present application provide a display device, including a display screen, a backlight component, an optical component and a controller; the backlight component is located on the back side of the display screen, and the optical component is located between the backlight component and the display screen; the backlight component includes two More than one backlight group. The light beams emitted by the same backlight group can direct the display content of the display screen to the same viewing position through optical components. The light beams emitted by different backlight groups are directed to different viewing positions. Each viewing position is arranged along the height direction of the display screen. ; The controller is used to control the switch of each backlight group, and is also used to make the display screen display display content corresponding to the turned-on backlight group.

Through the setting of the backlight component, the display device distributes the different viewing positions where the display screen can be viewed up and down in space, and projects different display contents to Different viewing positions make use of the persistence characteristics of the human eye to allow multiple people to watch different content on the same screen. Since each viewing position is arranged in the height direction, the viewer will not affect the display when moving horizontally at a viewing position. Content, better viewing experience.

In a possible implementation, the optical component includes a plurality of lenses arranged along the width direction of the display screen. The refraction of the lens can be used to project the display content of the display screen to different spatial heights.

For example, the lens may be a Fresnel lens.

In another possible implementation, the backlight group includes several light sources arranged along the width direction of the display screen.

For example, the light source can be an LED lamp, so that the backlight group forms an LED array.

Another aspect of the embodiment of the present application provides a display device, including a display screen, a light splitting component and a controller; the light splitting component is located on the front side of the display screen; the display screen includes more than two pixel units arranged along the height direction; the display screen Each pixel unit can be mapped to more than two viewing positions through the light splitting component. Each viewing position is arranged along the height direction of the display screen. The pixel unit corresponding to one viewing position constitutes a display unit; the controller is used to control the display of each display unit. Different display content.

The display device maps pixel units of different heights of the display screen to viewing positions of different heights through the setting of light splitting components. Each pixel unit mapped to the same viewing position constitutes a display unit. Different display units can display different display contents. In this way, through the spatial distribution of display pixels, multiple people can watch different content on the same screen. Since each viewing position is arranged in the height direction, the viewer will not affect the displayed content when moving horizontally at a viewing position. Better experience.

In a possible implementation, the display screen includes more than two pixel partitions, each pixel partition is arranged along the height direction of the display screen, each pixel partition includes at least one pixel unit, and one pixel partition constitutes a display unit. In this way, the division of pixel units corresponding to each display unit is relatively simple, and the structural arrangement of the light splitting component can be simplified.

In a possible implementation, the display screen includes more than two pixel partitions, each pixel partition is arranged along the height direction of the display screen, each pixel partition includes more than two pixel units, and different pixels in the same pixel partition Units belong to different display units. In this way, the light splitting components can be arranged according to pixel partitions, which is beneficial to reducing the thickness of the display screen.

For example, the number of pixel units in each pixel partition is the same.

Exemplarily, the pixel unit includes at least one pixel row.

For example, the number of pixel rows in each pixel unit is the same.

In a possible implementation, the light splitting component includes a lenticular lens or a barrier grating. This helps control product costs.

Description of the drawings

Figure 1 is a schematic diagram of an application scenario of a display device provided by an embodiment of the present application;

Figure 2 is a schematic diagram of the application scenario of the display device shown in Figure 1 from another perspective;

Figure 3 is a schematic structural diagram of a display device provided in Embodiment 1 of the present application;

Figure 4 is a schematic structural diagram of a display device provided in Embodiment 2 of the present application;

Figure 5 is a schematic structural diagram of a display device provided in Embodiment 3 of the present application;

FIG. 6 is a schematic structural diagram of a display device provided in Embodiment 4 of the present application.

Detailed ways

Embodiments of the present application provide a display device that can be used in application scenarios where multiple people watch different display contents on the same screen. For example, multiple family members watch a TV at the same time, but each family member sees different TV program content. Scenes can meet the different viewing preferences of many people.

For ease of understanding and clear description, three directions are defined for the display device in this article: the first direction is the width direction X of the display device 100 , the second direction is the thickness direction Y of the display device 100 , and the third direction is the thickness direction Y of the display device 100 Height direction Z.

Please refer to Figures 1 and 2. Figures 1 and 2 respectively show schematic diagrams of application scenarios of the display device provided by embodiments of the present application under two different viewing angles. The structure of the display device 100 in the figure is only schematic, and does not indicate the shape and size ratio of the actual product.

In the embodiment of the present application, the display device 100 includes a display screen 110. In the figure, the display screen 110 is shown as having a rectangular parallelepiped structure. The display screen 110 has a width direction X, a thickness direction Y, and a height direction Z. The display screen 110 has an opposite front side and a back side. Generally, the side of the display screen 110 used to display content is called the front side. When used, the viewer faces the front side of the display screen 110. Correspondingly, the side opposite to the front side is The other side is called the back side of the display screen 110 , and the front side and the back side are arranged in the thickness direction Y of the display screen 110 . In terms of the orientation shown in Figures 1 and 2, the right side of the display screen 110 in Figure 1 is the front side, and the left side is the back side. Figure 2 shows the front side of the display screen 110.

In order for the viewer to conveniently view the display content of the display screen 110, after the position of the display device 100 is determined, for example, in a home application scenario, the display device 100 is hung on the wall of the living room or placed behind the desktop, and the front side of the display screen 110 is Corresponding to the viewing area A, the display content of the display screen 110 can be seen more conveniently or clearly in the viewing area A. In FIGS. 1 and 2 , the viewing area A is illustrated by a dotted frame. It should be understood that the viewing area A does not belong to the structure of the display device 100 .

In the embodiment of the present application, through the structural arrangement of the display device 100, more than two viewing positions on the front side of the display screen 110 are distributed up and down in spatial position. In other words, each viewing position is distributed along the height direction Z of the display screen 110. , each viewing position is an area extending along the width direction Viewing position A1, second viewing position A2, third viewing position A3, fourth viewing position A4 and fifth viewing position A5. At a viewing position, you can see the display content projected by the display device 100 to that position. Through control, the display screen 110 can display different content at different viewing positions, so that multiple people can watch different content on the same screen. The display content of the display screen 110 can be controlled by the controller of the display device 100 .

In application, the number of different contents displayed on the display screen 110 is not necessarily consistent with the total number of viewing positions, but is determined according to the number of viewers in the actual application. For example, there are two viewers, and the two viewers are respectively In the first viewing position A1 and the third viewing position A3, according to the viewer's viewing needs, the display screen 110 can be controlled to display two different display contents to satisfy the viewer at the first viewing position A1 and the third viewing position respectively. A3 viewer.

The above-mentioned display device 100 distributes viewing positions up and down in space. In this way, for the same viewer, moving the position in the width direction X of the display screen 110 will not affect the viewing content, and the viewing experience will be better.

The above display device 100 can display different contents at viewing positions at different heights based on time division technology. Please refer to FIG. 3 , which is a schematic structural diagram of a display device provided in Embodiment 1 of the present application.

The display device 100 provided in this embodiment includes a display screen 110, a backlight component 120, an optical component 130, and a controller 140. The controller 140 is communicatively connected to the display screen 110 and the backlight component 120.

The backlight component 120 is located on the back side of the display screen 110 (left side in the figure), and the optical component 130 is located between the backlight component 120 and the display screen 110 , that is, the optical component 130 is also located on the back side of the display screen 110 .

The backlight component 120 includes more than two backlight groups 121. Each backlight group 121 is arranged along the height direction Z of the display screen 110. The light beam emitted by the same backlight group 121 can project the display content of the display screen 110 to the same viewer after passing through the optical component 130. Position, the light beams emitted by different backlight groups 121 are directed to different viewing positions. In this way, the optical component 130 is used to refract the light beams emitted by the backlight groups 121 of different heights to different spatial heights, so that the display content of the display screen 110 can be seen at different spatial height positions.

Exemplarily, the backlight component 120 of the display device 100 shown in FIG. 3 is provided with five backlight groups 121. From top to bottom, they are a first backlight group 1211, a second backlight group 1212, a third backlight group 1213, and a fourth backlight group. Group 1214 and the fifth backlight group 1215; correspondingly, the viewing area A of the display device 100 has five viewing positions, which from bottom to top are the first viewing position A1, the second viewing position A2, the third viewing position A3, The fourth viewing position A4 and the fifth viewing position A5.

The first to fifth backlight groups correspond to the first to fifth viewing positions one-to-one. Specifically, the first backlight group 1211 is in an on state, and the light beam emitted by the first backlight group 1211 is projected to the first viewing position A1 through the optical component 130 , the viewer at the first viewing position A1 can see the display screen of the display screen 110, the second backlight group 1212 is in the on state, and the viewer at the second viewing position A2 can see the display screen of the display screen 110, The third backlight group 1213 is in the on state, and the viewer at the third viewing position A3 can see the display screen of the display screen 110 . The fourth backlight group 1214 is in the on state, and the viewer at the fourth viewing position A4 can see the display screen. When the display screen of the display screen 110 is reached, the fifth backlight group 1215 is turned on, and the viewer at the fifth viewing position A5 can see the display screen of the display screen 110 .

The controller 140 is used to control the switching state of each backlight group 121 of the backlight component 120, and is also used to cause the display screen 110 to display display content corresponding to the backlight group 121 in the turned-on state. The controller 140 can switch each backlight group 121 on or off, and switch the display content of the display screen 110 according to the on state of the backlight group 121 to achieve switching of different display contents, so that viewers at different viewing positions can view to different display content.

The display device 100 provided in this embodiment is based on the time-division directional backlight principle, and enables multiple people to watch different display contents on the same screen through rapid refresh under timing control and the persistence characteristics of the human eye. The persistence characteristic of the human eye means that when the human eye is watching, it takes a period of time for the light signal to be transmitted to the brain nerves. After the effect of the light is over, the visual image will not disappear immediately. This visual phenomenon is called persistence of vision. By utilizing this characteristic, viewers at different viewing positions can see different display images by switching on and off the backlight groups 121 of different heights of the backlight component 120 and switching the corresponding display content.

The viewing area A of the display device 100 has N viewing positions. In application, the display device can support 1 to N people watching different contents on the same screen, and is not limited to only N people watching different contents on the same screen. Here, N is a natural number.

During specific settings, the display device 100 may be provided with a sensing component, which is used to detect which viewing position of the viewing area A the viewer is at. In other words, the sensing component is used to detect which viewing position of the viewing area A there is a viewer, and The feedback signal is sent to the controller 140, and the controller 140 can determine the switching control of the backlight group 121 and the display content according to the number and location of the viewers.

In an application scenario with only one viewer, after the display device 100 is started, the sensing component of the display device 100 can sense the viewing position of the viewer. For example, if it senses that the viewer is at the third viewing position A3, a signal will be fed back. to the controller 140. The controller 140 turns on the third backlight group 1213 corresponding to the third viewing position A3 according to the feedback signal. In this way, the light beam of the third backlight group 1213 can be refracted by the optical component 130 to display the display content of the display screen 110. Toward the third viewing position A3, the viewer can see the displayed content at the third viewing position A3. During the viewing process, the viewer's viewing will not be affected when the viewer moves along the width direction X of the display screen 110 in the area where the third viewing position A3 is located. Experience; when the viewer moves from the third viewing position A3 to other viewing positions, the sensing component of the display device 100 can re-sense the viewing position of the viewer, such as at the first viewing position A1, and feedback to the controller 140 to control The monitor 140 can turn off the third backlight group 1213 and turn on the first backlight group 1211 corresponding to the first viewing position A1, so that the viewer can see the display content of the display screen 110 at the first viewing position A1.

The display device 100 may be provided with relatively independent control components, such as a remote control. The remote control may be communicatively connected with the controller 140 of the display device 100 . The viewer may also send instructions to the controller 140 of the display device 100 through the remote control to select Switching of the backlight group 121 or switching of display content.

In the application scenario of multi-person viewing, two viewers are used as an example here, and more viewers can refer to it for understanding. The two viewers are a first viewer and a second viewer. The display content that the first viewer wants to watch is the first display content, and the display content that the second viewer wants to watch is the second display content. With the first As an example, the viewer is located at the second viewing position A2 and the second viewer is located at the fourth viewing position A4. The controller 140 may control the second backlight group 1212 corresponding to the second viewing position A2 and the second backlight group 1212 corresponding to the fourth viewing position A4. The fourth backlight group 1214 is turned on alternately, and the display content of the display screen 110 is switched accordingly. Specifically, the controller 140 first turns on the second backlight group 1212 and controls the display screen 110 to display the first display content. At this time, the first viewer at the second viewing position A2 can see the first display content. The device 140 then turns off the second backlight group 1212, turns on the fourth backlight group 1214, and controls the display screen 110 to display the second display content. The first display content can still be seen, and the second viewer at the fourth viewing position A4 can see the second display content. The controller 140 then turns off the fourth backlight group 1214, turns on the second backlight group 1212, and the second viewer The viewer can still see the second display content under the effect of the human eye persistence characteristic, and the first viewer can see the first display content before the human eye persistence characteristic disappears. In this way, the controller 140 switches the second backlight group 1212 and the fourth backlight group 1214, and switching the display screen 110 to display the first display content and the second display content, so that the first viewer and the second viewer can watch different display content on the same screen at the same time.

The switching frequency of the switch of each backlight group 121 controlled by the controller 140 can be set according to actual application requirements, and is not limited here.

In this embodiment, the optical component 130 includes a plurality of lenses 131 arranged along the width direction of the display screen 110. The selection of the lenses 131 is based on the ability to project light beams emitted by different backlight groups 121 to viewing positions with different spatial heights. Considering cost control, the lens 131 may be a Fresnel lens.

In this embodiment, the backlight group 121 includes a plurality of light sources 121 arranged along the width direction of the display screen 110. The light sources 121 may be LED (Light Emitting Diode, light emitting diode) lamps.

In addition to the above display device based on the time-division directional backlight principle, embodiments of the present application also provide a display device based on the spatial light splitting principle. As shown in Figures 4 to 6, the display device 100 based on the spatial light splitting principle includes a display screen 110, a light splitter Component 150 and a controller (not shown in the figure), the controller is communicatively connected with the display screen 110 .

The light splitting component 150 is located on the front side of the display screen 110 (right side in the figure). Usually, the light splitting component 150 is provided on the pixel surface of the display screen 110 .

The display screen 110 includes more than two pixel units arranged along the height direction Z. Each pixel unit of the display screen 110 can be mapped to more than two viewing positions through the light splitting component 150. Each viewing position is arranged along the height direction Z of the display screen 110. The pixel unit corresponding to a viewing position constitutes a display unit.

The controller is used to control each display unit to display different display contents.

Using the above solution, the display device 100 divides the pixel area of the display screen 110 in height, and uses the light splitting component 150 to map the pixel units at different heights to viewing positions at different heights, thereby enabling multiple people to watch different contents on the same screen. For a single viewing position, the resolution of the displayed content is reduced compared to the resolution of the entire display screen 110 .

The pixel area of the display screen 110 includes multiple pixel rows in the height direction Z, and the height of each pixel row is the height of a single pixel. In other words, in the height direction Z, the pixel row is the smallest unit, and the pixel unit includes at least one pixel row. During specific settings, the number of pixel rows in a pixel unit can be determined as needed, and there is no quantitative limit here.

The specific implementation of the display device 100 based on the principle of spatial light splitting will be described in detail below with reference to embodiments.

Please refer to FIG. 4 , which is a schematic structural diagram of a display device provided in Embodiment 2 of the present application.

The display device 100 provided in this embodiment divides the display screen 110 into two or more pixel partitions in the height direction Z. In other words, each pixel partition of the display screen 110 is arranged along the height direction Z of the display screen 110; each pixel partition Including at least one pixel unit, a pixel partition constitutes a display unit. In other words, each pixel unit in the same pixel partition is mapped to the same viewing position after being passed through the light splitting component 150 .

In this embodiment, since one pixel partition constitutes one display unit, one pixel partition can be regarded as one pixel unit.

The display device 100 shown in FIG. 4 exemplarily divides the display screen 110 into three pixel partitions in the height direction Z. From top to bottom, they are the first pixel partition P1, the second pixel partition P2, and the third pixel partition P3. , that is, from top to bottom, the display screen 110 includes a first pixel unit 111 , a second pixel unit 112 and a third pixel unit 113 .

The viewing area A of the display device 100 has three viewing positions, which are the first viewing position A1, the second viewing position A2 and the third viewing position A3 from bottom to top. Among them, the first viewing position A1 can view the display content mapped by the first pixel partition P1, the second viewing position A2 can view the display content mapped by the second pixel partition P2, and the third viewing position can view the third pixel partition Display content of P3 mapping.

The display content of each pixel partition can be controlled by the controller.

Compared with the first embodiment shown in Figure 3, different display contents in this embodiment are not switched in time, but are displayed simultaneously. Through the spatial distribution of 110 pixels on the display screen, multiple people can watch different contents on the same screen. .

In the example shown in FIG. 4 , the first pixel partition P1 , the second pixel partition P2 and the third pixel partition P3 of the display screen 110 have the same number of pixel rows. According to application requirements, the number of pixel rows in different pixel partitions can also be set differently, for example, when the number of pixel rows on the display screen 110 cannot be equally divided, or when there are other actual requirements.

For example, the light splitting component 150 can use a lenticular lens 151, which is easy to install and relatively low cost.

Please refer to FIG. 5 , which is a schematic structural diagram of a display device provided in Embodiment 3 of the present application.

The display device 100 provided in this embodiment divides the display screen 110 into more than two pixel partitions in the height direction Z. Each pixel partition includes more than two pixel units; different pixel units in the same pixel partition belong to different displays. For example, if there are four pixel units in a pixel partition, then these four pixel units belong to four display units, corresponding to four viewing positions. In other words, a display unit consists of pixel units belonging to different pixel partitions.

In this embodiment, the light splitting component 150 also uses lenticular lenses 151 as an example. The number of lenticular lenses 151 is consistent with the number of pixel partitions. One pixel partition corresponds to one lenticular lens 151, so that different pixel units of the same pixel partition can be mapped to different viewing angles. Location.

Exemplarily, the display device 100 shown in FIG. 5 divides the display screen 110 into four pixel partitions in the height direction Z. From top to bottom, they are the first pixel partition P1, the second pixel partition P2, and the third pixel partition. P3 and the fourth pixel partition P4, each pixel partition has three pixel units. Correspondingly, the viewing area A of the display device 100 has three viewing positions, which are the first viewing position A1 and the second viewing position from bottom to top. A2 and third viewing position A3.

As shown in FIG. 5 , the first pixel unit 111a of the first pixel partition P1, the first pixel unit 111b of the second pixel partition P2, the first pixel unit 111c of the third pixel partition P3, and the first pixel unit 111c of the fourth pixel partition P3. The pixel units 111d are mapped to the first viewing position A1 after passing through their corresponding lenticular lenses 151 to form the first display unit; the second pixel unit 112a of the first pixel partition P1, the second pixel unit 112b of the second pixel partition P2, and the second pixel unit 112b of the second pixel partition P2. The second pixel unit 112c of the three-pixel partition P3 and the second pixel unit 112d of the fourth pixel partition P4 are mapped to the second viewing position A2 through their corresponding lenticular lenses 151 to form a second display unit; The third pixel unit 113a, the third pixel unit 113b of the second pixel partition P2, the third pixel unit 113c of the third pixel partition P3, and the third pixel unit 113d of the fourth pixel partition P4 are mapped through their corresponding lenticular lenses 151. To the third viewing position A3, a third display unit is formed.

In specific settings, the number of pixel units in each pixel partition can be the same, and the number of pixel rows in each pixel unit can be the same. In this way, the resolution of each display unit can be the same, avoiding the resolution of the display unit corresponding to a certain viewing position. The rate is too low and affects the viewing effect. Of course, according to application requirements, the number of pixel units in each pixel partition may not be exactly the same, and the number of pixel rows in each pixel unit may not be exactly the same.

Please refer to FIG. 6 , which is a schematic structural diagram of a display device provided in Embodiment 4 of the present application.

The structure of the display unit of the display device 100 provided by this embodiment is similar to that of the third embodiment shown in FIG. 5 . The difference between the two lies in the structure of the light splitting component 150 . In this embodiment, the light splitting component 150 includes a barrier grating 152 . The barrier grating 152 implements the spatial distribution of pixel units.

In addition to the lenticular lens 151 and the barrier grating 152, the light splitting component 150 can also use other optical elements that can achieve spatial light splitting.

The display device 100 based on the spatial separation principle shown in FIG. 4 to FIG. 6 takes three viewing positions as an example. In application, the display device 100 can have two viewing positions through the specific settings of the pixel partition, pixel unit and light splitting component 150. viewing positions, or more than four viewing positions, no examples will be given one by one.

The display device 100 provided by the embodiment of the present application can be applied to a real image display system or a virtual image display system, depending on the optical path system design of the display device 100 .

This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (10)

1. A display device, characterized in that it includes a display screen, a backlight component, an optical component and a controller; The backlight component is located on the back side of the display screen, and the optical component is located between the backlight component and the display screen; The backlight component includes more than two backlight groups. The light beams emitted by the same backlight group can direct the display content of the display screen to the same viewing position through the optical component. The light beams emitted by different backlight groups can be directed to different viewing positions. The viewing positions are arranged along the height direction of the display screen; The controller is used to control the switch of each backlight group, and is also used to cause the display screen to display display content corresponding to the backlight group in the turned-on state. 2. The display device according to claim 1, wherein the optical component includes a plurality of lenses arranged along the width direction of the display screen. 3. The display device according to claim 1 or 2, wherein the backlight group includes a plurality of light sources arranged along the width direction of the display screen. 4. A display device, characterized by including a display screen, a light splitting component and a controller; The light splitting component is located on the front side of the display screen; The display screen includes more than two pixel units arranged along the height direction; Each pixel unit of the display screen can be mapped to more than two viewing positions through the light splitting component. Each viewing position is arranged along the height direction of the display screen, and the pixel corresponding to one viewing position The units constitute a display unit; The controller is used to control each of the display units to display different display contents. 5. The display device according to claim 4, wherein the display screen includes more than two pixel partitions, each of the pixel partitions is arranged along the height direction of the display screen, and each of the pixel partitions It includes at least one pixel unit, and one pixel partition constitutes one display unit. 6. The display device according to claim 4, wherein the display screen includes more than two pixel partitions, each of the pixel partitions is arranged along the height direction of the display screen, and each of the pixel partitions Including more than two pixel units, different pixel units in the same pixel partition belong to different display units. 7. The display device according to claim 5 or 6, wherein the number of pixel units in each of the pixel partitions is the same. 8. The display device according to any one of claims 4 to 6, wherein the pixel unit includes at least one pixel row. 9. The display device according to claim 8, wherein the number of pixel rows in each of the pixel units is the same. 10. The display device according to any one of claims 4 to 6, wherein the light splitting component includes a lenticular lens or a barrier grating.