Display apparatus and display method

Abstract

Disclosed in the present application are a display apparatus and a display method. The display apparatus comprises: a light-emitting layer and a light-shielding layer, wherein the light-emitting layer and the light-shielding layer are arranged opposite each other; the light-emitting layer comprises several sub-pixel light-emitting regions; the light-shielding layer comprises several first light-shielding members; each sub-pixel light-emitting region at least corresponds to one first light-shielding member; and the first light-shielding member corresponding to each sub-pixel light-emitting region is arranged around a target side of the sub-pixel light-emitting region, so as to shield light emitted by the sub-pixel light-emitting region from the target side. The line of sight of a driver can be prevented from being affected, and the overall display brightness of a display apparatus can also be prevented from being affected to the greatest extent possible.

Description

Display device and display method Technical Field

[0001] The present application relates to display technology, and in particular to a display device and a display method. Background Art

[0002] A display device is a device used to display images and colors, and is widely used in mobile phones, computers, monitors, televisions and other devices with image or text display functions.

[0003] Taking the display device as an in-vehicle display screen as an example, as the market demand for expanding screen functions in the in-vehicle display screen scenario gradually increases, the size of in-vehicle display screens is getting larger and larger, and the screen brightness of in-vehicle display screens is also getting higher and higher. However, during the driving process of the vehicle, the light emitted by the large-size screen has a larger angle of emission, and the range covered by the screen light is also wider. The screen light can even shine on the windshield of the vehicle, causing interference with the driver's field of vision and affecting driving safety.

[0004] Summary of the Invention

[0005] To address the above technical issues, the present application provides a display device and a display method, and the technical solutions are as follows:

[0006] According to a first aspect of the present application, a display device is provided, comprising: a light-emitting layer and a light-shielding layer, wherein the light-emitting layer and the light-shielding layer are arranged opposite to each other;

[0007] The light-emitting layer includes a plurality of sub-pixel light-emitting areas, and the light-shielding layer includes a plurality of first light-shielding members; each of the sub-pixel light-emitting areas corresponds to at least one first light-shielding member, wherein the first light-shielding member corresponding to each sub-pixel light-emitting area is arranged around the target side of the sub-pixel light-emitting area to block the light emitted from the sub-pixel light-emitting area on the target side.

[0008] Optionally, the display device is applied to a vehicle driving scene, and the display device includes at least a main driving display area; in the main driving display area, the target side is a side of the sub-pixel light-emitting area close to the vehicle windshield.

[0009] Optionally, the display device is applied to a vehicle driving scene, and the display device includes at least a co-pixel display area; within the co-pixel display area, the target side includes a side of the sub-pixel light-emitting area close to the vehicle windshield, and / or, the target side includes a side of the sub-pixel light-emitting area close to the main driver's seat.

[0010] Optionally, the display device is applied to a vehicle driving scene, and the display device includes at least a central control display area; in the central control display area, the target side is a side of the sub-pixel light-emitting area close to the vehicle windshield.

[0011] Optionally, the display device is applied to a vehicle driving scene, and the display device integrates a main driving display area, a co-pixel display area and a central control display area; in the main driving display area, the target side is the side of the sub-pixel light-emitting area close to the vehicle windshield; in the co-pixel display area, the target side includes the side of the sub-pixel light-emitting area close to the vehicle windshield, and / or, the target side includes the side of the sub-pixel light-emitting area close to the main driving seat; in the central control display area, the target side is the side of the sub-pixel light-emitting area close to the vehicle windshield.

[0012] Optionally, the first light-shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied.

[0013] Optionally, the electrochromic material can change to black when no voltage is applied; and can change to the same color as the sub-pixel when a target voltage is applied.

[0014] Optionally, the first light-shielding element is a black matrix.

[0015] Optionally, the display device further includes a filter layer, which is provided between the light-emitting layer and the light-shielding layer and is configured to cooperate with the light-emitting layer to absorb ambient light incident on the display device.

[0016] Optionally, the filter layer is a COE structure.

[0017] Optionally, the filter layer includes a plurality of light-transmitting areas and a plurality of second light-shielding members; each sub-pixel light-emitting area corresponds to one light-transmitting area, and the light-transmitting area is used to transmit the light emitted by the sub-pixel light-emitting area; the second light-shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied; the second light-shielding member is arranged in the light-transmitting area and is arranged around the target side.

[0018] Optionally, the number and / or thickness of the first light-shielding members corresponding to each sub-pixel light-emitting region are determined according to the area size of the sub-pixel light-emitting region.

[0019] Optionally, the shape of the first light shielding member corresponds to the edge shape of the sub-pixel light emitting area.

[0020] According to a second aspect of the present application, a display method is provided. The display method is applied to the display device according to the first aspect, wherein the first light shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied. The method includes:

[0021] Determine the sub-pixel color corresponding to the sub-pixel light-emitting area;

[0022] Based on the sub-pixel color, a target voltage is applied to the electrochromic material to change the color of the electrochromic material to the sub-pixel color.

[0023] According to a third aspect of the present application, a display method is provided. The display method is applied to the display device according to the first aspect, wherein the first light shielding member and / or the second light shielding member is an electrochromic material, and the method comprises:

[0024] Determine the sub-pixel color corresponding to the sub-pixel light-emitting area;

[0025] Based on the sub-pixel color, a target voltage is applied to the electrochromic material to change the color of the electrochromic material to the sub-pixel color.

[0026] The technical solution provided in the present application can set a shading member on one side of the sub-pixel light-emitting area in the display device as needed to block the large-angle light emitted from the sub-pixel light-emitting area on that side to avoid affecting the driver's line of sight, while ensuring the normal emission of light from the sub-pixel light-emitting area on other sides, and minimizing the impact on the overall display brightness of the display device.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] FIG1 is a schematic diagram of a screen sub-pixel light-emitting scene in the related art;

[0030] FIG2 is a schematic diagram of another screen sub-pixel light-emitting scenario in the related art;

[0031] FIG3 is a schematic structural diagram of a display device according to an embodiment of the present application;

[0032] FIG4 is a schematic structural diagram of a display device according to another embodiment of the present application;

[0033] FIG5 is a schematic structural diagram of a display device according to another embodiment of the present application;

[0034] FIG6 is a schematic structural diagram of a display device according to another embodiment of the present application;

[0035] FIG7 is a schematic structural diagram of a display device according to another embodiment of the present application;

[0036] FIG8 is a schematic structural diagram of a display device according to another embodiment of the present application;

[0037] FIG9 is a schematic diagram showing the correspondence between the shape of a sub-pixel and the shape of a light shielding member according to an embodiment of the present application;

[0038] FIG10 is a schematic diagram of an application scenario of a display device according to an embodiment of the present application;

[0039] FIG11 is a schematic diagram of an application scenario of a display device according to another embodiment of the present application;

[0040] FIG12 is a schematic diagram of an application scenario of a display device according to another embodiment of the present application;

[0041] FIG13 is a flow chart of a display method according to an embodiment of the present application;

[0042] FIG14 is a flow chart of a display method according to another embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art should fall within the scope of protection of this application.

[0044] Please refer to Figure 1. Taking the display device as a screen as an example, the sub-pixel luminous scene of the screen is first exemplarily introduced. The screen is a device for displaying images and colors, and is widely used in mobile phones, computers, monitors, TVs and other devices with image or text display functions.

[0045] Taking the display device as an in-vehicle display screen as an example, as the market demand for expanding screen functions in the in-vehicle display screen scenario gradually increases, the size of in-vehicle display screens is getting larger and larger, and the screen brightness of in-vehicle display screens is also getting higher and higher. However, during the driving process of the vehicle, the light emitted by the large-size screen has a larger angle of emission, and the range covered by the screen light is also wider. The screen light can even shine on the windshield of the vehicle, causing interference with the driver's field of vision and affecting driving safety.

[0046] Taking Figure 1 as an example, assuming that there are four sub-pixels on the screen (sub-pixel 1, sub-pixel 2, sub-pixel 3, sub-pixel 4), the light emitted by the light-emitting areas of each of the four sub-pixels can cover multiple directions (not limited to the directions indicated by the four arrows on the light-emitting area of ​​a sub-pixel shown in Figure 1). Taking the in-vehicle display scene as an example, in the in-vehicle display scene, the large-angle light emitted by the sub-pixel light-emitting area, such as the light emitted upward relative to the driver (such as the direction indicated by the upward arrows of each sub-pixel light-emitting area in Figure 1), may shine on the windshield of the vehicle and affect the driver's field of view.

[0047] Taking Figure 2 as an example, in the related art, in the vehicle display scenario, there is a situation where the main driving screen (such as the instrument panel screen), the central control screen, and the co-pixel screen are integrated into the same vehicle screen. For example, in the screen in Figure 2, it is assumed that there are four sub-pixels in the main driving screen area (sub-pixel 1, sub-pixel 2, sub-pixel 3, sub-pixel 4), there are four sub-pixels in the central control screen area (sub-pixel 5, sub-pixel 6, sub-pixel 7, sub-pixel 8), and there are four sub-pixels in the co-pixel screen area (sub-pixel 9, sub-pixel 10, sub-pixel 11, sub-pixel 12). The main driving screen area, the central control screen area, and the co-pixel screen area all have large-angle light emitted from the sub-pixel luminous area in Figure 1 irradiating the vehicle. In addition to the situation on the windshield, in the co-pilot screen area, since the co-pilot often has entertainment needs when using the co-pilot screen, the co-pilot screen can often provide more diverse entertainment functions, which determines that the brightness of the co-pilot screen display is often higher, and the content displayed on the screen often changes greatly per unit time, so the screen color and brightness will also change rapidly with the change of the displayed content per unit time, then the large-angle light emitted by the co-pilot screen area in the direction facing the main driving position is often more likely to affect the main driver's line of sight (for example, the large-angle light emitted by each sub-pixel luminous area in the co-pilot screen area in the direction indicated by the arrow on the left in Figure 2).

[0048] It is understandable that in actual application scenarios, the number of sub-pixels contained in the screen is far greater than the number of sub-pixels shown in Figures 1 and 2, and the arrangement of each sub-pixel also varies in many ways and is not limited to that shown in Figures 1 and 2. Therefore, there is no specific limitation on the number and arrangement of sub-pixels.

[0049] In the related art, black matrix (BM) material is used to surround and stack BM around each sub-pixel light-emitting area of ​​the screen to block the large-angle light emitted from each sub-pixel light-emitting area. However, the large-angle light emitted from the sub-pixel light-emitting area in all directions is blocked, which will have a significant impact on the brightness of the screen display, thereby resulting in poor visual viewing effect of the screen.

[0050] It is worth noting that the above description of the sub-pixel luminous scene of the screen is only an exemplary display, taking the display device as a screen as an example. In actual applications, other application scenarios are not ruled out, and the display device is not limited to the screen, and no specific limitation is made on this.

[0051] In response to the above problems, the present application provides a display device that can avoid affecting the driver's vision while minimizing the impact on the overall display brightness of the display device.

[0052] As shown in FIG3 , the display device may include a light-emitting layer 101 and a light-shielding layer 102 , wherein the light-emitting layer 101 and the light-shielding layer 102 may be arranged opposite to each other;

[0053] The light-emitting layer 101 includes a plurality of sub-pixel light-emitting areas (for example, the sub-pixel 1 light-emitting area and the sub-pixel 2 light-emitting area in FIG3 ), and the light-shielding layer 102 includes a plurality of first light-shielding members (for example, the first light-shielding member 1 and the first light-shielding member 2 shown in FIG3 ); each of the sub-pixel light-emitting areas corresponds to at least one of the first light-shielding members (for example, as shown in FIG3 , the sub-pixel 1 light-emitting area can correspond to the first light-shielding member 1, and the sub-pixel 2 light-emitting area can correspond to the first light-shielding member 2), wherein the first light-shielding member corresponding to each of the sub-pixel light-emitting areas is arranged around the target side of the sub-pixel light-emitting area to block the light emitted from the sub-pixel light-emitting area on the target side.

[0054] As shown in Figure 4, the number of first light-shielding members corresponding to each sub-pixel light-emitting area can be one, two, three or more. Taking Figure 4 as an example, the light-emitting area of ​​sub-pixel 1 can correspond to two first light-shielding members, and the light-emitting area of ​​sub-pixel 2 can correspond to one first light-shielding member. The number of first light-shielding members corresponding to each sub-pixel light-emitting area can be the same or different. Therefore, there is no specific limitation on the number of first light-shielding members corresponding to each sub-pixel light-emitting area.

[0055] When there are multiple first light-shielding members corresponding to the sub-pixel light-emitting region, the multiple first light-shielding members can be arranged in a variety of ways. For example, one arrangement may include: multiple first light-shielding members can be stacked and arranged in sequence at a certain distance in a direction perpendicular to the display device. For example, as shown in Figure 4, two second light-shielding members corresponding to the light-emitting region of sub-pixel 1 are stacked and arranged in sequence at a certain distance in a direction perpendicular to the light-emitting layer 101 and the light-shielding layer 102 (i.e., perpendicular to the display device). It is worth noting that the above description of the arrangement of the first light-shielding members is only an example. In actual applications, other arrangements are not excluded and are not specifically limited to this.

[0056] Taking a driving scene as an example, the above-mentioned display device can be applied to a vehicle driving scene. The display device may include at least a main driving display area. The content displayed in the main driving display area may be content related to vehicle driving that the driver needs to know during the driving process, such as an instrument panel display, a vehicle status display, etc. In the main driving display area, a first light shielding member corresponding to each sub-pixel light-emitting area is arranged around the above-mentioned target side, i.e., the side of the sub-pixel light-emitting area close to the vehicle windshield, to shield the light emitted by the sub-pixel light-emitting area on the side close to the vehicle windshield. The main driving screen area of ​​the display device can shield the light emitted by the display device toward the vehicle windshield, thereby preventing the light emitted from the main driving screen area toward the vehicle windshield from being reflected and affecting the driver's line of sight.

[0057] Taking the driving scenario as an example, the above-mentioned display device can be applied to a vehicle driving scenario. The display device may include at least a central control display area. The content displayed in the central control display area may be related to controlling in-vehicle software or hardware devices, such as an in-vehicle air conditioning control interface or an in-vehicle music control interface. Within the central control display area, a first light shielding member corresponding to each sub-pixel light-emitting area is disposed around the target side, i.e., the side of the sub-pixel light-emitting area close to the vehicle windshield, to shield light emitted from the sub-pixel light-emitting area close to the vehicle windshield. This can shield light emitted from the display device toward the vehicle windshield in the central control display area of ​​the display device, thereby preventing light emitted from the central control display area toward the vehicle windshield from being reflected and affecting the driver's vision.

[0058] Take Figure 5 as an example: for the above-mentioned main driving display area and central control display area, as shown in Figure 5, since the position of the vehicle windshield is often above the display device, the above-mentioned first light-shielding member can be arranged around the upper side of each sub-pixel light-emitting area of ​​the display device to block the light emitted from the sub-pixel light-emitting area on the upper side.

[0059] Taking the driving scene as an example, as an example, the above-mentioned display device can be applied to the vehicle driving scene. The display device may include at least a co-pixel display area. The content displayed in the co-pixel display area may be content displayed to meet the various needs of the co-pixel, such as entertainment multimedia content, such as music playing information, videos, games and other entertainment content; in the co-pixel display area, the first light shielding member corresponding to each sub-pixel light-emitting area may be arranged around the side of the sub-pixel light-emitting area close to the vehicle windshield to block the light emitted from the sub-pixel light-emitting area on the side close to the vehicle windshield; the first light shielding member corresponding to each sub-pixel light-emitting area may also be arranged around the side of the sub-pixel light-emitting area close to the main driver's seat to block the light emitted from the sub-pixel light-emitting area on the side close to the main driver's seat. The light emitted from the display device toward the vehicle windshield and the main driver's seat in the co-pixel display area of ​​the display device can be blocked to avoid affecting the driver's line of sight.

[0060] It can be understood that for the above-mentioned co-pixel display area, the first light-shielding member can be arranged around the side of the sub-pixel light-emitting area close to the vehicle windshield, or it can be arranged only around the side of the sub-pixel light-emitting area close to the main driver's seat, or it can be arranged around both the side of the sub-pixel light-emitting area close to the vehicle windshield and the side close to the main driver's seat. There is no specific limitation on this.

[0061] Take Figure 6 as an example to illustrate: For the above-mentioned co-pilot display area, as shown in Figure 6, since the position of the vehicle windshield is often above the display device, the main driver's seat is often to the left (for example, left-hand drive vehicle) or right (for example, right-hand drive vehicle) of the co-pixel display area, so the above-mentioned first light-shielding member can be arranged around the upper side of each sub-pixel light-emitting area of ​​the display device, and can also be arranged around the left or right side of each sub-pixel light-emitting area of ​​the display device to block the light emitted from the sub-pixel light-emitting area on the upper side, left side or right side.

[0062] Taking the driving scene as an example, as an example, the above-mentioned display device can be applied to the vehicle driving scene, and the display device can be integrated with a main driving display area, a co-pixel display area and a central control display area, wherein the content displayed in the main driving display area can be the content that the driver needs to know during the driving process and is related to the vehicle driving, such as the instrument panel display, the vehicle status display and other content; in the main driving display area, the first shading member corresponding to each sub-pixel light-emitting area is arranged around the above-mentioned target side, that is, the side of the sub-pixel light-emitting area close to the vehicle windshield; the content displayed in the co-pixel display area can be content displayed to meet the various needs of the co-pixel, such as entertainment multimedia content, such as information on playing music, videos, games and other entertainment content; in the co-pixel display area, the first shading member corresponding to each sub-pixel light-emitting area can surround the sub-pixel light-emitting area The domain is arranged on the side close to the vehicle windshield; the first shading member corresponding to each sub-pixel light-emitting area can also be arranged around the side of the sub-pixel light-emitting area close to the main driver's seat; it can be understood that for the above-mentioned co-pixel display area, the first shading member can be arranged around the side of the sub-pixel light-emitting area close to the vehicle windshield, or it can be arranged only around the side of the sub-pixel light-emitting area close to the main driver's seat, or it can be arranged around both the side of the sub-pixel light-emitting area close to the vehicle windshield and the side close to the main driver's seat, and there is no specific limitation on this; the content displayed in the central control display area can be content related to controlling the software or hardware equipment in the vehicle, such as the in-vehicle air-conditioning control interface, the in-vehicle music control interface, etc.; within the central control display area, the first shading member corresponding to each sub-pixel light-emitting area is arranged around the above-mentioned target side, that is, the side of the sub-pixel light-emitting area close to the vehicle windshield. The development trend of display devices is to integrate multiple display areas of different types into one display device. For example, a screen can integrate a triple screen with a main driving display, a central control display and a co-pilot display. The shading design can be performed separately for each different type of display area, so that the arrangement of the shading parts is associated with the type of display area.

[0063] Take Figure 7 as an example to illustrate: for the case where the display device is integrated with the main driver display area, the co-driver display area and the central control display area, as shown in Figure 7, since the position of the vehicle windshield is often above the display device, the main driver's seat is often to the left (for example, left-hand drive vehicle) or right (for example, right-hand drive vehicle) of the co-driver display area, so for the main driver display area and the central control display area, the above-mentioned first light-shielding member can be arranged around the upper side of each sub-pixel light-emitting area of ​​the display device to block the light emitted from the sub-pixel light-emitting area on the upper side; for the co-pixel display area, the above-mentioned first light-shielding member can be arranged around the upper side of each sub-pixel light-emitting area of ​​the display device, and can also be arranged around the left or right side of each sub-pixel light-emitting area of ​​the display device to block the light emitted from the sub-pixel light-emitting area on the upper side, the left side or the right side.

[0064] It is worth noting that the above description of the arrangement of shading elements in different types of display areas of display devices is merely an example. In actual applications, other types of display areas and arrangements of shading elements are not excluded and are not specifically limited thereto.

[0065] The first light shielding member can be implemented in a variety of specific ways. For example, one implementation may include: the first light shielding member may be an electrochromic material that changes to different colors when different voltages are applied. Changing to different colors under different voltages can meet the light shielding requirements in different scenarios.

[0066] There are multiple ways for the electrochromic material to change color according to voltage changes. For example, one implementation method may include: the electrochromic material can change to black when no voltage is applied; the electrochromic material can change to the same color as the sub-pixel color when a target voltage is applied. For example: Taking a vehicle driving scenario as an example, during driving, if no voltage is applied to the above-mentioned electrochromic material, the color of the electrochromic material is black, which can absorb the light emitted from the sub-pixel light-emitting area to the electrochromic material, achieving a shading effect; when the vehicle is parked, the target voltage can be applied to the electrochromic material, and it can change to the same color as the sub-pixel. For example, if the sub-pixel is red, the electrochromic material can change to red under the target voltage. If the sub-pixel is blue, the electrochromic material can change to blue under the target voltage. Sub-pixels of different colors can correspond to different target voltages. When the electrochromic material changes to the same color as the sub-pixel, it can transmit the light emitted from the light-emitting area of ​​the sub-pixel to the electrochromic material. The presence of the electrochromic material can ensure that the light emitted by the display device does not affect the driver's line of sight during vehicle driving, ensuring safe driving, and ensure the brightness of the display device during parking to avoid excessive power consumption.

[0067] It is worth noting that the above description of the color change mode of the electrotropic material is only an example display. In actual application, other color change modes are not excluded and are not specifically limited to this.

[0068] As an example, another implementation of the first light shielding member may include: the first light shielding member may be a black matrix. It is worth noting that the above description of the specific implementation of the first light shielding member is only an example. In actual application, other specific implementations are not excluded and are not limited to this.

[0069] As shown in Figure 8 , the display device may further include a filter layer 103 disposed between the light-emitting layer 101 and the light-shielding layer 102. The filter layer 103 can cooperate with the light-emitting layer 101 to absorb ambient light incident on the display device. Ambient light from the exterior of the display device often enters the interior of the display device. If this ambient light is not properly reflected from the display device, it can significantly affect the display quality and reduce the user experience. By cooperating with the light-emitting layer, the filter layer can absorb as much of the incoming ambient light as possible, reducing reflections and improving the display quality.

[0070] The structure of the filter layer 103 may be implemented in a variety of ways. For example, one implementation may include: the filter layer 103 may be a COE (Color Filter On Encapsulation) structure.

[0071] The above COE structure is exemplified as follows: the COE structure includes several black matrices and light-transmitting areas corresponding to the sub-pixel light-emitting areas. The light-transmitting areas can be color filters (CF), and each color filter is surrounded by a black matrix.

[0072] It is worth noting that the above description of the specific implementation of the structure of the filter layer 103 is only an example display. In actual application, other specific implementations are not excluded and are not limited to this.

[0073] As shown in FIG8 , as an example, another implementation of the structure of the filter layer 103 may include: the filter layer 103 includes a plurality of light-transmitting regions and a plurality of second light-shielding members; each sub-pixel light-emitting region of the light-emitting layer 101 may correspond to one of the light-transmitting regions, the light-transmitting region being used to transmit light emitted by the sub-pixel light-emitting region; the second light-shielding member may be an electrochromic material that can change to different colors when different voltages are applied; the second light-shielding member may be disposed in the light-transmitting region and disposed around the target side of the sub-pixel light-emitting region corresponding to the light-transmitting region. The electrochromic material can change to black when no voltage is applied; and can change to the same color as the sub-pixel when a target voltage is applied. For example: Taking a vehicle driving scenario as an example, during driving, if no voltage is applied to the above-mentioned electrochromic material, the color of the electrochromic material is black, which can absorb the light emitted from the sub-pixel light-emitting area to the electrochromic material, thereby achieving a shading effect; when the vehicle is parked, the target voltage can be applied to the electrochromic material, and it can change to the same color as the sub-pixel. For example, if the sub-pixel is red, the electrochromic material can change to red under the target voltage. If the sub-pixel is blue, the electrochromic material can change to blue under the target voltage. Sub-pixels of different colors can correspond to different target voltages. When the electrochromic material changes to the same color as the sub-pixel, it can transmit the light emitted from the light-emitting area of ​​the sub-pixel to the electrochromic material. The presence of the electrochromic material can ensure that the light emitted by the display device does not affect the driver's line of sight during vehicle driving, thereby ensuring safe driving, and ensure the brightness of the display device during parking to avoid excessive power consumption.

[0074] It can be understood that when the above-mentioned display device includes the filter layer 103, the above-mentioned first light-shielding member and the above-mentioned second light-shielding member can be set in the above-mentioned display device at the same time, or one of them can be set separately, both of which can achieve the light-shielding effect on the target side of the sub-pixel light-emitting area, so there is no specific limitation on the setting method.

[0075] It is worth noting that the above description of the specific implementation of the second light-shielding member is merely an exemplary display. In practical applications, other specific implementations are not excluded and are not limited thereto.

[0076] It is understandable that the number of the first light shielding member, the second light shielding member, the light-transmitting area, the sub-pixel light-emitting area, etc. shown in FIG8 is only for exemplary purposes and is not limited in actual applications.

[0077] Taking into account that the area sizes of the light-emitting regions of each sub-pixel of the light-emitting layer 101 may be different, for example, different sub-pixel types, such as red sub-pixels, green sub-pixels, blue sub-pixels, etc., may have different sizes of light-emitting regions, and the angles of light emission may also be different. In response to this problem, as an example, the number and / or thickness of the first light-shielding members corresponding to each sub-pixel light-emitting region of the light-emitting layer 101 can be determined according to the area sizes of the light-emitting regions of each sub-pixel. By controlling the number and / or thickness of the first light-shielding members corresponding to each sub-pixel light-emitting region, the maximum light emission angle of the sub-pixel light-emitting region can be controlled, thereby ensuring that the maximum light emission angle of each sub-pixel light-emitting region is close. It is worth noting that the above introduction to the control method for the maximum light emission angle of the sub-pixel light-emitting region is only an exemplary display. In actual applications, other control methods are not excluded and are not limited to this.

[0078] Considering that the sub-pixel light-emitting regions of the light-emitting layer 101 may have different shapes, as an example, for different edge shapes of the sub-pixel light-emitting regions of the light-emitting layer 101, the shape of the first light-shielding member can correspond to the edge shape of the sub-pixel light-emitting region. As an example, the shape of the second light-shielding member can also correspond to the edge shape of the sub-pixel light-emitting region. Taking Figure 9 as an example, the sub-pixel light-emitting region can have various shapes such as rectangle, diamond, circle, etc., as shown in Figure 9. Based on the edge shape of the sub-pixel light-emitting region, a light-shielding member of a corresponding shape can be arranged on the target side of the sub-pixel light-emitting region.

[0079] The types of sub-pixels corresponding to the above-mentioned sub-pixel light-emitting areas can be realized in many ways. As an example, the types of the above-mentioned sub-pixels can include red sub-pixels, blue sub-pixels, and green sub-pixels. The above-mentioned sub-pixels can also be of other types, which are not specifically limited.

[0080] Please refer to Figures 10 to 12 for an exemplary introduction to a specific application scenario of a display device according to an embodiment of the present application.

[0081] Taking the application of the display device in the vehicle scene as an example, the display device can be an organic light-emitting diode (OLED) screen. As shown in FIG10 , the OLED screen of this embodiment can be divided into a light-emitting layer, a filter layer and a light-shielding layer, wherein the light-emitting layer can at least include a thin film transistor (TFT) backplane, an anode (Anode), a black pixel definition layer (BPDL), an emissive layer (EL) (i.e., the sub-pixel light-emitting area described in any of the above embodiments), a PLN for encapsulation and leveling, a chemical vapor deposition (CVD) (CVD1 and CVD2 as shown in FIG10 ), an inkjet printing (IJP) and an OC; the filter layer at least includes a filter COE (Color filter On The COE structure includes a BM and a CF (i.e., the light-transmitting area described in any of the above embodiments), and the filter layer may further include an OC that performs encapsulation and leveling functions; the shading layer may include several BM layers (i.e., the first shading member described in any of the above embodiments), and an OC that performs encapsulation and leveling functions.

[0082] As shown in Figure 11, taking the two first light-shielding members (BM2 and BM3) corresponding to the sub-pixel light-emitting area as an example, BM1 can be the BM located outside the light-transmitting area CF in the above-mentioned COE structure, and BM2 and BM3 can be two layers of BM in the light-shielding layer (as first light-shielding members), and the distance between their boundaries and the boundary of the sub-pixel light-emitting area is less than the distance between BM1 and the boundary of the sub-pixel light-emitting area. For example, a can be the distance between the right boundary of BM2 or BM3 and the left boundary of the sub-pixel light-emitting area, b can be the distance between the left and right boundaries of the sub-pixel light-emitting area, c can be the height difference between the highest layer BM3 and the sub-pixel light-emitting area (such as EL), d can be the distance between the right boundary of the sub-pixel light-emitting area and the boundary of BM1, and e can be the height difference between BM1 and the sub-pixel light-emitting area; taking the light emission angles at the left and right endpoints of the sub-pixel light-emitting area as an example, for α and β, we have: β=arctan{e / b+d} (2)

[0083] Then the maximum emission angle of the sub-pixel light emitting area on the BM3 side can be: 90°-arctan{c / (a+b)} (3)

[0084] The maximum emission angle of the sub-pixel light emitting area on the side away from BM3 can be 90°-arctan{e / b+d} (4)

[0085] It can be seen from the above formula that among the light emission angles at the left and right endpoints of the sub-pixel light-emitting area, the maximum emission angle on the BM3 side is much smaller than the maximum emission angle on the side away from BM3.

[0086] As can be seen from the figure, the larger the value of c, the smaller a+b, and the smaller the maximum emission angle on the BM3 side. This can be used as a basis to adjust the maximum emission angle on the BM3 side.

[0087] The size of b can generally be 15-35 μm. The value of a can be set to be greater than or equal to 0 to ensure the light extraction efficiency of the sub-pixel light-emitting area in the direction perpendicular to the display panel. The width of BM2 or BM3 can be greater than or equal to (d+2) μm, and d is generally set to 4 μm to prevent the sub-pixel light-emitting area from emitting light at the gap between BM1 and BM2.

[0088] The size of c can generally be taken as 35um. By increasing the number of BMs in the light-shielding layer, for example, stacking BM4 and BM5 in addition to BM2 and BM3, c can be increased. In order to increase the size of c, BM2 and BM3 can also be arranged above the FMLOC process, and a metal pattern for touch control can be designed under BM2 or BM3 to raise BM2 or BM3, thereby increasing the value of c.

[0089] Assuming c=40um, a=0um, b=25um, d=4um, and e=20um, calculation shows that the maximum emission angle of the sub-pixel light-emitting area on the BM3 side is 32°, and the maximum emission angle on the side away from BM3 is 55°.

[0090] Since the size of the sub-pixel light-emitting areas is different, that is, the size of b is different, the value of a can be adjusted to ensure that the size of a+b is close, that is, the maximum emission angle is close; the number of stacked BMs, that is, the value of c, can also be adjusted to ensure that the maximum emission angles of each sub-pixel light-emitting area are close. For example, the larger the area of ​​the sub-pixel light-emitting area, the more layers of BM can be stacked (stacking one more layer of BM will increase c by about 5um).

[0091] As shown in Figure 12, an electrochromic material can be fixed around the filter layer's BM and within the light-transmitting region (CF). During driving, when no voltage is applied to the electrochromic material, the electrochromic material appears black. When the vehicle is parked, applying different voltages to the electrochromic material can adjust the color to the sub-pixel color. For example, electrodes can be placed on the upper and lower sides of the electrochromic material. By applying different voltages to the two electrodes, a voltage difference is created, which can then be adjusted to the color corresponding to the sub-pixel color.

[0092] In some embodiments, as shown in FIG12 , the electrochromic material may be located between the black matrix and the CF, with at least a portion of the electrochromic material covering the surface of the black matrix and at least a portion located in the light-transmitting region (CF). For example, the orthographic projection of the electrochromic material on the TFT backplane at least partially overlaps with the orthographic projection of the spacer PS on the TFT backplane, and at least a portion of the orthographic projection of the electrochromic material on the TFT backplane partially overlaps with the orthographic projection of the anode on the TFT backplane.

[0093] The technical solution provided in the embodiment of the present application can set a shading member on one side of the sub-pixel light-emitting area in the display device as needed to block the large-angle light emitted from the sub-pixel light-emitting area on that side to avoid affecting the driver's line of sight, while ensuring the normal emission of light from the sub-pixel light-emitting area on the other sides, and minimizing the impact on the overall display brightness of the display device.

[0094] Corresponding to the display device described in any of the above embodiments, one embodiment of the present application further provides a display method, which is applied to the display device described in any of the above embodiments, wherein the first light shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied. As shown in FIG13 , the method includes the following steps:

[0095] S1301, determining the sub-pixel color corresponding to the sub-pixel light-emitting area;

[0096] S1302 : Apply a target voltage to the electrochromic material based on the sub-pixel color, so that the color of the electrochromic material changes to the sub-pixel color.

[0097] It can be understood that the target voltage corresponds to the color of the sub-pixel, and the electrochromic material can change to different colors when different target voltages are applied.

[0098] Taking the above-mentioned display device applied to a vehicle driving scenario as an example, if it is detected that the vehicle is in a driving state, then the voltage may not be applied to the electrochromic material, and at this time, the electrochromic material may appear black; if it is detected that the vehicle is in a parked state, then the above-mentioned target voltage may be applied to the electrochromic material to change the color of the electrochromic material to the above-mentioned sub-pixel color.

[0099] Corresponding to the display device described in any of the above embodiments, another embodiment of the present application further provides a display method, which is applied to the display device described in any of the above embodiments, wherein the first light shielding member and / or the second light shielding member is an electrochromic material, as shown in FIG14 , and the method includes the following steps:

[0100] S1401, determining the sub-pixel color corresponding to the sub-pixel light-emitting area;

[0101] S1402 : Apply a target voltage to the electrochromic material based on the sub-pixel color, so that the color of the electrochromic material changes to the sub-pixel color.

[0102] It can be understood that the target voltage corresponds to the color of the sub-pixel, and the electrochromic material can change to different colors when different target voltages are applied.

[0103] Taking the above-mentioned display device applied to a vehicle driving scenario as an example, if it is detected that the vehicle is in a driving state, then the voltage may not be applied to the electrochromic material, and at this time, the electrochromic material may appear black; if it is detected that the vehicle is in a parked state, then the above-mentioned target voltage may be applied to the electrochromic material to change the color of the electrochromic material to the above-mentioned sub-pixel color.

[0104] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A display device, characterized in that: The display device comprises: a light-emitting layer and a light-shielding layer, wherein the light-emitting layer and the light-shielding layer are arranged opposite to each other; The light-emitting layer includes a plurality of sub-pixel light-emitting areas, and the light-shielding layer includes a plurality of first light-shielding members; each of the sub-pixel light-emitting areas corresponds to at least one of the first light-shielding members, wherein the first light-shielding member corresponding to each of the sub-pixel light-emitting areas is arranged around a target side of the sub-pixel light-emitting area to shield the light emitted from the sub-pixel light-emitting area on the target side.

2. The display device according to claim 1, characterized in that The display device is applied to a vehicle driving scene, and the display device at least includes a main driving display area; In the main driving display area, the target side is a side of the sub-pixel light emitting area close to the vehicle windshield.

3. The display device according to claim 1, characterized in that The display device is applied to a vehicle driving scene, and the display device at least includes a co-pilot display area; In the co-pixel display area, the target side includes a side of the sub-pixel light-emitting area close to the vehicle windshield, and / or the target side includes a side of the sub-pixel light-emitting area close to the main driver's seat.

4. The display device according to claim 1, characterized in that The display device is applied to a vehicle driving scene, and the display device at least includes a central control display area; In the central control display area, the target side is a side of the sub-pixel light-emitting area close to the vehicle windshield.

5. The display device according to claim 1, characterized in that The display device is applied to vehicle driving scenes, and the display device integrates a main driving display area, a co-pilot display area, and a central control display area; In the main driving display area, the target side is a side of the sub-pixel light emitting area close to the vehicle windshield; In the co-pixel display area, the target side includes a side of the sub-pixel light-emitting area close to the vehicle windshield, and / or the target side includes a side of the sub-pixel light-emitting area close to the main driving seat; In the central control display area, the target side is a side of the sub-pixel light-emitting area close to the vehicle windshield.

6. The display device according to claim 1, characterized in that: The first light shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied.

7. The display device according to claim 6, characterized in that: The electrochromic material can change to black when no voltage is applied; and can change to the same color as the sub-pixel color when a target voltage is applied.

8. The display device according to claim 1, characterized in that: The first light shielding element is a black matrix.

9. The display device according to claim 1, characterized in that: The display device further comprises a filter layer, which is arranged between the light-emitting layer and the light-shielding layer and is used to cooperate with the light-emitting layer to absorb the ambient light incident on the display device.

10. The display device according to claim 9, characterized in that: The filter layer is a COE structure.

11. The display device according to claim 9, characterized in that The filter layer includes a plurality of light-transmitting areas and a plurality of second light-shielding members; Each of the sub-pixel light-emitting regions corresponds to one of the light-transmitting regions, and the light-transmitting region is used to transmit the light emitted by the sub-pixel light-emitting region; The second light shielding member is an electrochromic material, which can change to different colors when different voltages are applied; the second light shielding member is arranged in the light-transmitting area and is arranged around the target side.

12. The display device according to claim 1, characterized in that: The number and / or thickness of the first light shielding members corresponding to each sub-pixel light emitting region is determined according to the area size of the sub-pixel light emitting region.

13. The display device according to claim 1, characterized in that: The shape of the first light shielding member corresponds to the edge shape of the sub-pixel light emitting area.

14. A display method, characterized in that: Applied to the display device of claim 1, the first light shielding member is an electrochromic material, and the electrochromic material can change to different colors when different voltages are applied, and the method comprises: Determine the sub-pixel color corresponding to the sub-pixel light-emitting area; Based on the sub-pixel color, a target voltage is applied to the electrochromic material to change the color of the electrochromic material to the sub-pixel color.

15. A display method, characterized in that: Applied to the display device according to claim 11, the first shading member and / or the second shading member is an electrochromic material, and the method comprises: Determine the sub-pixel color corresponding to the sub-pixel light-emitting area; Based on the sub-pixel color, a target voltage is applied to the electrochromic material to change the color of the electrochromic material to the sub-pixel color.

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