Display module and display system comprising same

Abstract

The invention provides a display module and a display system comprising the same. The display module comprises a backlight module; the first prism layer is arranged on the backlight module and is provided with a plurality of first prism columns extending along a first direction; the second prism layer is arranged on the first prism layer and is provided with a plurality of second prism columns extending along a second direction transverse to the first direction; and the display panel is arranged on the second prism layer. The first prism column protrudes back to the backlight module, and has a triangular first prism section on a virtual plane in which the first direction is a normal direction. The second prism column protrudes back to the backlight module and has a triangular second prism section on a virtual plane with the second direction being the normal direction. The vertex of the second prism section is vertically projected on the bottom edge and deviates relative to the center of the bottom edge along the first direction.

Description

Technical Field

[0001] The present invention relates to a display module and a display system including the same. Specifically, the present invention relates to a display module having a first prism layer and a second prism layer and a display system including the same. Background Art

[0002] With the rapid development of modern display technology, various application fields of display devices are gradually increasing and expanding. As mentioned above, the head-up display (HUD) that can be integrated into the transportation vehicle can provide display information under the premise of ensuring the driver's driving field of vision, and thus can reduce the frequency and time of looking down at the display device. Therefore, in order to provide safer and more convenient operation, this type of new interface has gradually become the mainstream mode of vehicle-mounted display devices. However, due to the limitations of vehicle-mounted space or design architecture, such head-up displays may have disadvantages such as too small display area, too low display brightness, limited display information or limited display objects, which makes it difficult and / or inconvenient for the driver and / or passengers to read the information. Therefore, in order to improve the convenience and operability of the driver and / or passengers, so as to facilitate the real-time grasp of various information, such as driving speed, navigation instructions, driving status, hardware status, power and / or fuel, hazard warnings, etc., it is necessary to develop a head-up display that can improve the display quality, display effect and display range, and can be integrated into the transportation vehicle based on the reduced volume. Summary of the invention

[0003] To solve the above problems, a display module is provided according to one embodiment of the present invention, which includes: a backlight module; a first prism layer, which is disposed on the backlight module and has a plurality of first prism columns extending along a first direction; a second prism layer, which is disposed on the first prism layer and has a plurality of second prism columns extending along a second direction transverse to the first direction, wherein the first prism columns and the second prism columns protrude away from the backlight module; and a display panel, which is disposed on the second prism layer. Each of the first prism columns has a first prism cross-section on a virtual plane with the first direction as a normal direction, and each of the second prism columns has a second prism cross-section on a virtual plane with the second direction as a normal direction. The first prism cross-section and the second prism cross-section are triangular. Wherein, when the vertex of the second prism cross-section is vertically projected onto the base of the second prism cross-section, it is offset relative to the center of the base along the first direction.

[0004] Another embodiment of the present invention provides a display system, which includes: a transparent partition, which is at least partially reflective; a display module as described above, which is disposed on a first side of the transparent partition, and the display panel and the transparent partition form an acute angle; and a preset observation area, which is located on the first side of the transparent partition and is farther away from the transparent partition than the display module. The first direction passes through the transparent partition. At least part of the image light emitted by the display panel reaches the preset observation area by reflection from the transparent partition, and the ambient light located on the second side of the transparent partition at least partially passes through the transparent partition and enters the preset observation area.

[0005] According to the display module and display system provided in accordance with the embodiments of the present invention, the amount of light emitted in a preset direction can be further increased based on the arrangement of the first prism layer and the second prism layer, and the divergence of the light emitted can be correspondingly increased. Based on the above, the display module and display system provided in accordance with the embodiments of the present invention can reflect the divergent light emitted by the display module through a transparent partition sandwiched with the display module at a preset angle, and can reduce or avoid the loss of light emitted in the opposite direction to the preset direction, such as directly passing through the transparent partition and being lost. Therefore, the display module and display system provided in accordance with the embodiments of the present invention can brighten the light emitted by the display module with a divergent property in a preset direction, and can further present a wide-area virtual image with increased brightness and uniformity through a transparent partition having perspective and reflectivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 FIG. 4 is an exploded diagram of a display module according to an embodiment of the present invention.

[0007] Figure 2 FIG. 4 is a schematic cross-sectional view of a first prism layer according to an embodiment of the present invention.

[0008] Figure 3 FIG. 4 is a schematic cross-sectional view of a second prism layer according to an embodiment of the present invention.

[0009] Figure 4 Schematic diagram of the divergence and deviation of the emitted light field of the light emitted through the first prism layer and the second prism layer according to different embodiments of the present invention.

[0010] Figure 5 FIG. 4 is a schematic diagram showing a comparison of the viewing angle difference of the emitted light field of the original light output and the offset light output according to an embodiment of the present invention.

[0011] Figure 6 FIG. 4 is a cross-sectional schematic diagram of a display module and its light emission viewing angle according to an embodiment of the present invention.

[0012] Figure 7 FIG. 4 is a schematic diagram of an application of a display system including a display module according to another embodiment of the present invention.

[0013] Figure 8 FIG. 4 is a specific schematic diagram of the arrangement directions of the first prism layer and the second prism layer in a display system according to another embodiment of the present invention.

[0014] Fig. 9 FIG. 4 is a schematic diagram of an application of a display system for wide-area display according to yet another embodiment of the present invention.

[0015] Wherein, the reference numerals are:

[0016] 10, 20, 30: Display module

[0017] 50: Driver

[0018] 100: First prism layer

[0019] 110: The first prism column

[0020] 200: Second prism layer

[0021] 220: Second Prism

[0022] 300: Optical components

[0023] 310: First optical layer

[0024] 320: Second optical layer

[0025] 500: virtual image

[0026] 1000: Display system

[0027] 2000: Transportation

[0028] 3000: Display system

[0029] BL: Backlight module

[0030] b1: bottom edge

[0031] b2: bottom edge

[0032] CL, CL': Image rays

[0033] DP: Display Panel

[0034] D1: First direction

[0035] D2: Second direction

[0036] D3: Third direction

[0037] E1: First side

[0038] E2: Second side

[0039] EB: Preset observation area

[0040] G: Acute angle

[0041] H: Viewing angle

[0042] K1: Vertex

[0043] K2: Vertex

[0044] L, L1, L2: light

[0045] M: Light source

[0046] ML: Ambient Light

[0047] N: Normal

[0048] n1: Vertex

[0049] n2: Vertex

[0050] O1, O2: Center

[0051] PB1, PB2: Area

[0052] Q, Q0, Q1: Transmitted light field

[0053] T1: First prism profile

[0054] T2: Second prism profile

[0055] VT1: Virtual plane

[0056] VT2: Virtual Plane

[0057] W: Transparent partition DETAILED DESCRIPTION

[0058] Various embodiments will be described below, and those with ordinary knowledge in the art should be able to easily understand the spirit and principles of the present invention by referring to the description with the accompanying drawings. However, although some specific embodiments will be specifically described in the text, these embodiments are only illustrative and are not considered to be limiting or exhaustive in all aspects. Therefore, for those with ordinary knowledge in the art, various changes and modifications to the present invention should be obvious and easily achievable without departing from the spirit and principles of the present invention.

[0059] Reference Figure 1According to one embodiment of the present invention, a display module 10 is provided, which includes: a backlight module BL for generating light, a first prism layer 100 disposed on the backlight module BL, a second prism layer 200 disposed on the first prism layer 100, and a display panel DP disposed on the second prism layer 200 for generating or configuring image light. In addition, according to some embodiments of the present invention, other optical elements 300 may be further configured according to the design of the display module 10. For example, optical elements such as a first optical layer 310 as a light guide plate and a second optical layer 320 as a light expander may be further disposed between the backlight module BL and the first prism layer 100 to adjust the light output properties or light output patterns of the backlight module BL. However, what is described here is only an example, and except for Figure 1 The specific aspects shown are for those skilled in the art to configure or adjust the optical element 300 to be integrated into the expected position of the structure of the display module 10 of the present invention according to other requirements or designs, and these possible changes and details will not be repeated here.

[0060] Continuing from the above, according to this embodiment, the first prism layer 100 may have a plurality of first prism columns 110 extending along a first direction D1, and the second prism layer 200 may have a plurality of second prism columns 220 extending along a second direction D2 transverse to the first direction D1. For example, the extension directions of the first prism columns 110 and the second prism columns 220 may be perpendicular to each other. That is, the first prism columns 110 of the first prism layer 100 and the second prism columns 220 of the second prism layer 200 are arranged to be orthogonal to each other.

[0061] Continue to refer to Figure 1 , the first prism column 110 and the second prism column 220 both protrude away from the backlight module BL. For example, the first prism column 110 and the second prism column 220 may protrude away from the backlight module BL along the third direction D3. Specifically, together with Figure 1 Reference Figure 2 and Figure 3 , each first prism column 110 may have a first prism cross section T1 on a virtual plane VT1 with the first direction D1 as a normal direction, and each second prism column 220 may have a second prism cross section T2 on a virtual plane VT2 with the second direction D2 as a normal direction. Figure 2 and Figure 3 As shown in the enlarged cross section of , the first prism cross section T1 and the second prism cross section T2 may both be triangular shaped and protrude away from the backlight module BL. For example, the first prism column 110 and the second prism column 220 may be strip-shaped extended columns with triangular cross sections and protruding away from the backlight module BL.

[0062] Specifically, according to some embodiments, the first prism cross section T1 may be formed as a substantially symmetrical triangle, and the second prism cross section T2 may be formed as a substantially asymmetrical triangle. Figure 2 As shown in the partial cross-section of the virtual plane VT1, the first prism section T1 may be an isosceles triangle, so that the vertex n1 of the first prism section T1 corresponds to the center O1 of the base b1 when vertically projected onto the base b1 of the first prism section T1. Continuing from the above, according to some embodiments, the first prism section T1 may have a vertex angle K1, and the vertex angle K1 may be an acute angle, a right angle, or an obtuse angle. For example, depending on the process tolerance limit, the vertex angle K1 may have an angle between 30 degrees and 150 degrees. Alternatively, the vertex angle K1 may have an angle between 60 degrees and 120 degrees. For example, as Figure 2 As shown, the top angle K1 may be 90 degrees, but this is only an example and is not limited thereto according to other embodiments.

[0063] In contrast, refer to Figure 3 As shown in the partial cross-section of the virtual plane VT2, the second prism section T2 may be an asymmetric acute triangle. Among them, the vertex angle K2 of the second prism section T2 may be at least less than 90 degrees. For example, the vertex angle K2 of the second prism section T2 may be less than 60 degrees. Further, according to some embodiments of the present invention, in order to achieve the expected brightness gain, the vertex angle K2 of the second prism section T2 may be less than 45 degrees. As mentioned above, the second prism section T2 is not formed symmetrically, and therefore the vertex n2 of the second prism section T2 may be offset relative to the center O2 of the base b2 when vertically projected onto the base b2 of the second prism section T2. ​​For example, the vertex n2 of the second prism section T2 may be offset relative to the center O2 of the base b2 along the first direction D1 when vertically projected onto the base b2 of the second prism section T2. ​​Therefore, the triangular column strips of the second prism column 220 may be relatively tilted along the first direction D1.

[0064] According to some embodiments, Figure 3 As shown, when a light L1 emitted through the first prism layer 100 further passes through the second prism layer 200, a light L2 offset along the first direction D1 can be generated based on this structure. Figures 1 to 3 When the light emitted from the backlight module BL passes through the first prism layer 100 and the second prism layer 200 in sequence, the light may be at least partially biased in the first direction D1.

[0065] As mentioned above, further reference is made to Figure 4, which shows a schematic diagram of the brightness of the biased emission light field Q actually generated by the first prism layer 100 and the second prism layer 200. Specifically, when the first prism column 110 of the first prism layer 100 and the second prism column 220 of the second prism layer 200 are arranged orthogonally to each other based on the extension direction, the angle of the vertex angle K2 of the second prism section T2 of the second prism column 220 of the second prism layer 200 can be changed, so that the second prism column 220 is offset along the first direction D1. For example, Figure 4 The figure shows the changes in the brightness of the emitted light field Q of the light emitted by the same backlight module BL after sequentially passing through the first prism layer 100 and the second prism layer 200 when the vertex angle K2 is 90 degrees (unshifted), 35 degrees (positive shift along the first direction D1), 25 degrees (positive shift along the first direction D1), and 20 degrees (positive shift along the first direction D1). It can be seen that after the second prism column 220 generates a positive shift along the first direction D1, the emitted light field Q also generates a positive bias along the first direction D1, and can further diverge and have a relatively more scattered property. That is, according to this embodiment, the light spot can be further enlarged or improved. Continuing from the above, as Figure 4 As shown, according to this embodiment, after the vertex angle K2 is less than 45 degrees, for example, at 35 degrees, 25 degrees and 20 degrees, the emitted light field Q is relatively further divergent, and the overall visual brightness can be even brighter by more than 300% compared to the baseline unbiased state (vertex angle K2 is 90 degrees). Figure 4 It can be seen that the light pattern of the emission light field Q emitted by the backlight module BL and sequentially passing through the first prism layer 100 and the second prism layer 200 has a greater divergence degree in the first direction D1 than in the second direction D2.

[0066] Further, according to some embodiments, together with Figure 4 Reference Figure 5 , when the second prism column 220 is offset along the first direction D1, the light field Q emitted by the backlight module BL and sequentially passing through the first prism layer 100 and the second prism layer 200 can be correspondingly diffused relative to the viewing angle of the vertical normal line (corresponding to the improvement of the divergence property of the light field Q). Specifically, if Figure 4By comparing the emission light field Q0 with a vertex angle K2 of 90 degrees (unshifted) and the emission light field Q1 with a vertex angle K2 of 35 degrees (positive shift along the first direction D1), it can be seen that relative to the concentrated vertical light emission, since the light field Q1 becomes more divergent and is offset along the first direction D1, it can further produce a wider range of light emission viewing angles in addition to the vertical light emission viewing angle (0 degrees). That is, according to some embodiments, when the second prism column 220 is offset along the first direction D1 and is configured so that the vertex angle K2 of the second prism column 220 becomes smaller, a diffuse and divergent emission light field Q1 can be generated, so that the emission light field Q1 can have a wider light emission viewing angle range and a larger half-power full angle.

[0067] For example, according to this embodiment, if Figure 5 As shown, when the second prism column 220 is offset along the first direction D1 and the vertex angle K2 of the second prism column 220 is reduced, the half-power full angle of the emission light field Q1 of the light emitted by the backlight module BL and sequentially passing through the first prism layer 100 and the second prism layer 200 can be greater than 30 degrees. In detail, the viewing angle of half the power of the light with the maximum power of the emission light field Q1 can be, for example, greater than 30 degrees. Therefore, it is easier for an observation object within a wider viewing angle range to receive the light emitted by the device of this embodiment.

[0068] Specifically, refer to Figure 6 The backlight module BL of the display module 10 may emit a light L (for example, using densely arranged light sources M such as Mini LEDs to emit light, but not limited thereto). The light L may sequentially pass through the first prism layer 100 to generate a light L1 that is concentrated in the second direction D2, and after passing through the second prism layer 200, the light L1 may generate a light L2 that is biased in the first direction D1 and further diverges as described above.

[0069] As mentioned above, the display panel DP of the display module 10 can be any display panel that can display based on the backlight configuration and electrical control of the display unit, and can correspondingly utilize the divergent bias light L2 to generate the image light CL that displays the expected display content. Figure 6As shown, since the image light CL is displayed based on the bias light L2, it can be generated correspondingly with a bias in the first direction D1, and can have a wider light output angle H relative to the vertical normal N of the display panel DP. For example, according to some embodiments, the display panel DP itself may not have the function of bias light, but based on the bias light L2, it can generate image light CL that is biased and divergent in the first direction D1, so that the display image or information with enhanced brightness can be presented in an asymmetric form at a desired angle or direction. Continuing from the above, based on the divergent bias light L2, the image light CL can be, for example, a larger amount of divergent light that is offset in the positive direction of the first direction D1 relative to the general symmetrical light output (for example, but not limited to the Lambertian light output mode), and can correspondingly present a display image or information with enhanced brightness in the positive direction of the first direction D1. Therefore, according to this embodiment, the display module 10 can realize display light with a bias and increased divergence in the desired direction, such as the first direction D1, and can further be used for various applications of light output bias and wide-area display based on this. In addition, according to other embodiments of the present invention, the display module 10 can also be matched with or integrated with various display modules or other bias light structures having further bias light functions to enhance the effect, thereby facilitating various applications of light bias and wide-area display.

[0070] Next, refer to Figure 7 , the application scenario of the display module 10 will be further explained below based on a display system 1000 according to an embodiment of the present invention.

[0071] As described above, according to the present embodiment, a display system 1000 is disclosed, which includes a transparent partition W having at least partial reflectivity, a display module 10 disposed on a first side E1 of the transparent partition W, and a preset observation area EB also located on the first side E1 of the transparent partition W. The preset observation area EB is farther from the transparent partition W than the display module 10, and may be, for example, an observation area where an object that uses the display information of the display system 1000 is expected to be located. In addition, the display panel DP is arranged to form an acute angle G with the transparent partition W and emit image light CL facing the transparent partition W. Therefore, at least a portion of the image light CL emitted from the display panel DP may be reflected by the transparent partition W and displayed toward the predicted observation area EB.

[0072] According to this embodiment, the display module 10 may be the display module 10 specifically described with reference to other figures, and the first direction D1 corresponds to the direction penetrating the transparent partition W. For example, according to this embodiment, the first direction D1 may be the direction penetrating the transparent partition W from the second side E2 of the transparent partition W toward the first side E1 of the transparent partition W. Based on the above, since the display module 10 can generate image light CL biased in the first direction D1, for example, biased in the positive direction of the first direction D1, the image light CL can be biased in the first direction D1 relative to the normal N of the display panel DP and emitted at a larger viewing angle. In detail, together with Figure 7 Referring to FIG. 1 , only a portion of the configuration of the first prism layer 100 and the second prism layer 200 is schematically shown. Figure 8 , the vertex n2 of the second prism section T2 can be offset along the first direction D1 away from the transparent partition W and toward the preset observation area EB. As mentioned above, the vertex angle K2 of the second prism section T2 can be less than 90 degrees. For example, the vertex angle K2 of the second prism section T2 can be less than 45 degrees. With this structure, the proportion of the image light CL that is offset along the first direction D1 toward the preset observation area EB and emitted toward the transparent partition W can be increased, thereby increasing the brightness of the image that can be reflected by the transparent partition W.

[0073] For details, refer to Figure 7 and Figure 8 As shown, the image light CL emitted at a larger viewing angle may reach the preset observation area EB through reflection from the transparent partition W at a position closer to the preset observation area EB along the first direction D1. As described above, according to the present embodiment, due to the offset in the first direction D1, the light emission amount of the image light CL' at a position farther from the preset observation area EB along the first direction D1 may be reduced, and thus the light emission that may directly vertically incident on the transparent partition W or incident at a smaller tilt angle due to the acute angle G between the display panel DP and the transparent partition W may be reduced or avoided, and the light emission that is incident on the transparent partition W at a larger tilt angle relative to the surface of the transparent partition W and then reflected may be increased. As described above, the image light CL' emitted at a position farther from the preset observation area EB along the first direction D1 may vertically incident on the transparent partition W or incident on the transparent partition W at a smaller tilt angle, and at least a portion may directly pass through the transparent partition W having light transmittance and cannot be reflected to the preset observation area EB, thereby unexpectedly increasing the light loss and reducing the light emission efficiency. Therefore, reducing the image light CL' and increasing the image light CL biased along the first direction D1 toward the preset observation area EB can correspondingly increase the amount of light that is incident on the transparent partition W with a larger inclination angle and is reflected, thereby improving the display brightness generated by the display module 10 observed in the preset observation area EB.

[0074] According to the present embodiment, since at least a portion of the image light CL emitted by the display panel DP can be reflected by the transparent partition W and reach the preset observation area EB as described above, and the ambient light ML located at the second side E2 of the transparent partition W can also at least partially pass through the transparent partition W and be incident to the preset observation area EB, the preset observation area EB can obtain display information with enhanced brightness while ensuring the field of view of the other side of the transparent partition W (for example, the second side E2).

[0075] According to some embodiments, the display system 1000 may be integrated into a vehicle 2000 to serve as a head-up display (HUD) of the vehicle. For example, the transparent partition W may be a windshield of the vehicle 2000, such as a car, and the preset observation area EB may be an observation area corresponding to the position of the driver 50.

[0076] According to the present embodiment, similar to the above-mentioned embodiment, the light pattern of the emission light field Q emitted by the backlight module BL and sequentially passing through the first prism layer 100 and the second prism layer 200 may have a greater divergence degree in the first direction D1 than in the second direction D2. For example, in the first direction D1, the half-power full angle of the emission light field Q emitted by the backlight module BL and sequentially passing through the first prism layer 100 and the second prism layer 200 may be greater than 30 degrees. Therefore, the display system 1000 according to the present embodiment may substantially have a divergent light field distribution with higher brightness and wider viewing angle, so that other areas except the preset observation area EB may also obtain display information correspondingly while ensuring the field of view of the other side (e.g., the second side E2) of the transparent partition W.

[0077] Specifically, refer to Fig. 9 As shown, the display system 3000 having the same or similar architecture as the display system 1000 can be used as a pillar to pillar Head-Up Display (PHUD). As mentioned above, the display system 3000 can have at least one display module 10. For example, Fig. 9As shown, the display system 3000 may have display modules 10, 20, 30 connected or separately arranged, and may be similar to or the same as the structure with corresponding first prism layer and second prism layer described in other figures mentioned above. Among them, the display modules 10, 20, 30 may be separately configured display modules, or may be different blocks of an integrated display module. As mentioned above, the display system 3000 can directly present a virtual image 500 formed by the image light CL reflected by the display modules 10, 20 and 30 on the transparent partition W, without the need for reflective display by other reflective mechanisms or reflective displays. In addition, since the optical path length and reflection loss are reduced by reducing the setting of reflective mechanisms and reflective displays, and a structure that can bias the light in the first direction D1 is set, according to the embodiments of the present invention, a backlight module BL with a low luminous intensity of non-light-collecting properties, such as a mini LED light-emitting panel, can be used to achieve a display screen with the same brightness or even a display screen with a higher brightness. Therefore, the display modules 10, 20, 30 and the display systems 1000 or 3000 according to the embodiments of the present invention can further improve the light extraction efficiency, thereby reducing or avoiding possible defects such as excessive power demand or device overheating while achieving the same brightness display.

[0078] like Fig. 9 As shown, since the display modules 10, 20 and 30 can all emit image light CL with amplified brightness and divergent viewing angle, and can increase the chance of being reflected by the large transparent partition W and the area of ​​light emission, the brightness of the display screen can be further improved. As mentioned above, the image light CL reflected by the transparent partition W of the display modules 10, 20, 30 arranged at different positions can be viewed in the preset observation area EB. In this way, the preset object in the preset observation area EB, such as the driver, can further expand the brightness of the display information or image that can be viewed while ensuring the environmental field of view of the second side E2 of the transparent partition W through the transparent partition W.

[0079] In addition, due to the diffused light field properties of the image light CL, the desired virtual image 500 can have a relatively high brightness and a wider viewing angle. Therefore, in addition to the preset observation area EB, other areas such as but not limited to the area PB1 corresponding to the co-pilot position or the area PB2 corresponding to the driving position and the co-pilot position can be used to view the virtual image 500 (such as Fig. 930 is an exemplary representation of the light emitted by the display module 30 being reflected to each area). As mentioned above, according to this embodiment, the display system 3000 is substantially a display with wide-area properties. For example, the display system 3000 can be substantially a through-type head-up display (PHUD) that displays on a windshield that runs through and across the A-pillar and between the A-pillars, so that images with a wide-area viewing angle that can be viewed from different positions can be reflected by the windshield that can see through the external environment. Therefore, according to this embodiment, the range of the observable area where the displayed information or image can be viewed can be further expanded while ensuring the environmental field of view of the second side E2 of the transparent partition W, and due to the enhanced brightness of the display modules 10, 20, 30 according to each embodiment of the present invention and the further divergent light properties offset along the first direction D1, the uniformity of the image light CL observed from different observable areas (such as but not limited to the preset observation area EB, area PB1, area PB2) can be improved.

[0080] According to some embodiments, the second prism layer 200 in the above-mentioned display modules 10, 20 and 30 may also have different degrees of bias along the first direction D1 and the corresponding angle size of the vertex angle K2, for example but not limited to making the vertex angle K2 in the display modules 10, 20 and 30 arranged at different positions have a gradual angle, so that the display can be adjusted for a specific preset observation area EB.

[0081] As mentioned above, refer to Figures 7 to 9 According to various embodiments of the present invention, a configuration having a first prism layer 100 and a second prism layer 200 can be used to realize a display light that is biased and divergent in a first direction D1, and a head-up display (HUD) with improved brightness and display effect can be realized. In particular, according to some preferred embodiments, a head-up display with wide-area or even panoramic characteristics can be further realized, such as but not limited to a through-type head-up display (PHUD), so that specific objects can view a wider display screen or objects in more positions can view the display screen. For example, according to some embodiments, a whole display screen can be displayed under the entire windshield of a car, and the driver, the co-pilot, and the rear passengers can all view the display screen with improved brightness and uniformity.

[0082] According to some embodiments, when the display system 3000 is integrated on the traffic vehicle 2000, the display modules 10, 20, and 30 may be sequentially installed on the upper part of the instrument panel, but are not limited thereto. Further, according to some embodiments, a pivoting mechanism having at least partial pivoting capability may be installed corresponding to each display module 10, 20, and 30, so that each display module 10, 20, and 30 may be better tilted in the first direction D1 for display, so as to be reflected by the transparent partition W and incident on the preset observation area EB or other areas. However, the above is only an example, and according to some embodiments of the present invention, when the instrument panel does not have enough space to install the pivoting mechanism or the structural design of the traffic vehicle 2000 is not conducive to installing the pivoting mechanism or pivoting, the image light CL that is biased in the first direction D1 and divergently emitted and reflected by the transparent partition W to present a virtual image can still be realized according to the structure provided by the present invention.

[0083] In summary, according to the display module and display system of each embodiment of the present invention, by including a first prism layer and a second prism layer with a specific arrangement configuration, it is possible to achieve divergent light emission that is biased toward a preset direction, and the range of the light emission viewing angle can be widened. Therefore, based on the biased light emission, various components can be combined to achieve richer and more delicate application scenarios. For example, a transparent partition can be combined to achieve a head-up display with improved brightness and wide area, and the loss of light emitted in the direction opposite to the preset direction can be reduced or avoided, and the uniformity of the actual display light can be increased, thereby improving the light emission efficiency of the overall display module or display system. As mentioned above, the display module or display system can be applied to various fields to provide a more intuitive and convenient display scenario.

[0084] The above descriptions are only some preferred embodiments of the present invention. It should be noted that the present invention can be subjected to various changes and modifications without departing from the spirit and principles of the present invention. It should be understood by those with ordinary knowledge in the art that the present invention is defined by the scope of the attached patent application, and that various possible substitutions, combinations, modifications and conversions do not exceed the scope of the present invention defined by the scope of the attached patent application in accordance with the intent of the present invention.

Claims

1. A display module, characterized in that: Include: a backlight module; A first prism layer is disposed on the backlight module and has a plurality of first prism columns extending along a first direction; a second prism layer disposed on the first prism layer and having a plurality of second prism columns extending along a second direction transverse to the first direction, wherein the first prism columns and the second prism columns protrude away from the backlight module; and a display panel disposed on the second prism layer, and Wherein, each of the first prism columns has a first prism cross-section on a virtual plane with the first direction as a normal direction, and each of the second prism columns has a second prism cross-section on a virtual plane with the second direction as a normal direction, and the first prism cross-section and the second prism cross-section are triangular, and Wherein, when the vertex of the second prism cross-section is vertically projected onto the bottom edge of the second prism cross-section, it is offset relative to the center of the bottom edge along the first direction.

2. The display module according to claim 1, characterized in that: in, When the light emitted from the backlight module passes through the second prism layer, at least a portion of the light is biased in the first direction, and the display panel correspondingly generates an image light biased in the first direction.

3. The display module according to claim 1, characterized in that: in, The first prism cross section is an isosceles triangle, and the second prism cross section is an acute triangle.

4. The display module according to claim 1, characterized in that: in, The vertex angle of the second prism cross section is less than 45 degrees.

5. The display module according to claim 1, characterized in that: in, The half-power full angle of an emission light field of light emitted by the backlight module and sequentially passing through the first prism layer and the second prism layer is greater than 30 degrees.

6. The display module according to claim 1, characterized in that: in, The divergence degree of a light pattern of an emission light field emitted by the backlight module and sequentially passing through the first prism layer and the second prism layer in the first direction is greater than that in the second direction.

7. A display system, characterized in that: Include: a transparent partition which is at least partially reflective; The display module as claimed in claim 1, which is disposed on a first side of the transparent partition, and the display panel and the transparent partition form an acute angle; and a preset observation area, located on the first side of the transparent partition and farther from the transparent partition than the display module, and The first direction passes through the transparent partition, and At least part of the image light emitted by the display panel is reflected by the transparent partition and reaches the preset observation area, and the ambient light located on a second side of the transparent partition at least partly passes through the transparent partition and reaches the preset observation area.

8. The display system according to claim 7, characterized in that: in, The transparent partition is a windshield of a traffic vehicle, and the preset observation area is an observation area corresponding to the driver's position.

9. The display system according to claim 7, characterized in that: in, The vertex of the second prism cross section is offset along the first direction away from the transparent partition and toward the preset observation area.

10. The display system according to claim 7, characterized in that: in, The vertex angle of the second prism cross section is less than 45 degrees.

11. The display system according to claim 7, characterized in that: in, The display system acts as a through-type head-up display.

12. The display system according to claim 7, characterized in that: in, The half-power full angle of an emission light field of light emitted by the backlight module and sequentially passing through the first prism layer and the second prism layer is greater than 30 degrees.

13. The display system according to claim 7, characterized in that: in, The divergence degree of a light pattern of an emission light field emitted by the backlight module and sequentially passing through the first prism layer and the second prism layer in the first direction is greater than that in the second direction.

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