Display module and display device

Abstract

The utility model provides a display module and a display device.The display module comprises a first liquid crystal display panel, a second liquid crystal display panel, a backlight module and a light distribution element, and the second liquid crystal display panel is arranged on the side, away from the light emitting side of the first liquid crystal display panel, of the first liquid crystal display panel; the backlight module is arranged between the first liquid crystal display panel and the second liquid crystal display panel. The light of the backlight module is distributed to the first liquid crystal display panel and the second liquid crystal display panel through the light distribution element, so that double-sided display of the first liquid crystal display panel and the second liquid crystal display panel can be realized by only one backlight module, the structure of the display module can be simplified, and the power consumption of the display module is reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] In recent years, the form of display devices has undergone great changes, such as curved, double-sided display, and folding. Among them, double-sided display devices are widely used in business places such as counters and conference rooms due to their communication convenience.

[0003] Current dual-sided display devices are relatively bulky, and their internal structure usually includes two sets of backlight structures, namely two sets of lamp strips and optical films, which are complex in structure and have high power consumption.

[0004] Therefore, it is necessary to provide a display module and display device to improve this deficiency. Utility Model Content

[0005] The embodiments of this application provide a display module and a display device, which can simplify the structure of the display module and reduce power consumption.

[0006] To achieve the above objectives, according to a first aspect of this application, a display module is provided, comprising:

[0007] First LCD display panel;

[0008] The second liquid crystal display panel is disposed on the side of the first liquid crystal display panel away from the light-emitting side of the first liquid crystal display panel;

[0009] A backlight module is disposed between the first liquid crystal display panel and the second liquid crystal display panel;

[0010] The display module further includes a light distribution element, which is used to distribute the light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel.

[0011] Optionally, the light distribution element is used to transmit light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel.

[0012] Optionally, the first liquid crystal display panel is a transmissive liquid crystal display panel, and the second liquid crystal display panel is a transmissive liquid crystal display panel or a semi-transmissive and semi-reflective liquid crystal display panel.

[0013] Optionally, the light distribution element includes an optical film for reflecting a first ray and transmitting a second ray, wherein the polarization directions of the first ray and the second ray are different.

[0014] Optionally, the backlight module includes a back panel and a light source assembly mounted on the back panel, and the light distribution element is disposed between the back panel and the light source assembly.

[0015] Optionally, the back panel is a transparent back panel.

[0016] Optionally, the light source assembly includes a first light source and a first light guide plate, one end of the first light guide plate is facing the light-emitting side of the first light source, one side of the first light guide plate is facing the first liquid crystal display panel, and the other side of the first light guide plate is facing the second liquid crystal display panel.

[0017] The light distribution element is disposed between the back plate and the other side of the first light guide plate.

[0018] Optionally, the first liquid crystal display panel includes a first polarizer, a first array substrate, a first opposing substrate, and a second polarizer. The first polarizer is disposed on the side of the first array substrate close to the backlight module, and the second polarizer is disposed on the side of the first opposing substrate away from the backlight module.

[0019] Optionally, the second liquid crystal display panel is a transmissive liquid crystal display panel, which includes a third polarizer, a second array substrate, a second opposing substrate, and a fourth polarizer. The third polarizer is disposed on the side of the second array substrate close to the backlight module, and the fourth polarizer is disposed on the side of the second opposing substrate away from the backlight module.

[0020] Wherein, the direction of the light transmission axis of the first polarizer is different from the direction of the light transmission axis of the third polarizer, and the direction of the light transmission axis of the second polarizer is the same as the direction of the light transmission axis of the third polarizer.

[0021] Optionally, the direction of the transmission axis of the first polarizer is perpendicular to the direction of the transmission axis of the third polarizer.

[0022] Optionally, the light distribution element is used to transmit light from the backlight module to the first liquid crystal display panel and to prevent light from the backlight module from being transmitted to the second liquid crystal display panel; the first liquid crystal display panel is a transmissive liquid crystal display panel and the second liquid crystal display panel is a total reflective liquid crystal display panel.

[0023] Optionally, the light distribution element includes a reflective layer for reflecting light from the backlight module onto the first liquid crystal display panel.

[0024] Optionally, the reflective layer is disposed on the side of the second liquid crystal display panel closest to the first liquid crystal display panel.

[0025] Optionally, the backlight module includes a backplate and a light source assembly mounted on the backplate;

[0026] The back panel is a transparent back panel to transmit light from the backlight module to the reflective layer and allow light reflected by the reflective layer to pass through.

[0027] Optionally, the display module further includes an auxiliary light source assembly, which is used to emit light into the second liquid crystal display panel from the light-emitting side of the second liquid crystal display panel.

[0028] Optionally, the auxiliary light source assembly includes a second light source and a second light guide plate, with one end of the second light guide plate facing the light-emitting side of the second light source and one side of the second light guide plate facing the second liquid crystal display panel.

[0029] Optionally, the backlight module includes a backplate, and the second light source is fixed to the backplate.

[0030] Optionally, the backlight module includes a light source assembly, and the light distribution element is disposed between the light source assembly and the second liquid crystal display panel.

[0031] According to a second aspect of this application, a display device is provided, including a display panel as described above.

[0032] In this embodiment of the application, the light from the backlight module is distributed to the first liquid crystal display panel and the second liquid crystal display panel by a light distribution element. Therefore, only one backlight module is needed to realize the double-sided display of the first liquid crystal display panel and the second liquid crystal display panel, thereby simplifying the structure of the display module and reducing the power consumption of the display module.

[0033] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0036] Figure 1 A schematic diagram of the structure of a first display module provided for an embodiment of this application;

[0037] Figure 2 A schematic diagram of the structure of a second display module provided for an embodiment of this application;

[0038] Figure 3 Schematic diagrams of the structures of three display modules provided for embodiments of this application;

[0039] Figure 4 A schematic diagram of a display device provided for an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0041] Embodiments of this application provide a display module, including a first liquid crystal display panel, a second liquid crystal display panel, a backlight module, and a light distribution element. The second liquid crystal display panel is disposed on the side of the first liquid crystal display panel away from the light-emitting side of the first liquid crystal display panel, and the backlight module is disposed between the first liquid crystal display panel and the second liquid crystal display panel. The light distribution element is used to distribute light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel.

[0042] In the embodiments of this application, light from the backlight module is distributed to the first liquid crystal display panel and the second liquid crystal display panel by a light distribution element. Therefore, only one backlight module is needed to realize the double-sided display of the first liquid crystal display panel and the second liquid crystal display panel, thereby simplifying the structure of the display module and reducing the power consumption of the display module.

[0043] like Figure 1 As shown, Figure 1 The first display module provided in the embodiments of this application is a structural schematic diagram. The display module 100 includes a first liquid crystal display panel 1, a second liquid crystal display panel 2 and a backlight module 3. The second liquid crystal display panel 2 is disposed on the side away from the light-emitting surface of the first liquid crystal display panel 1. The light-emitting surface of the first liquid crystal display panel 1 and the light-emitting surface of the second liquid crystal display panel 2 are disposed opposite to each other. The backlight module 3 is disposed between the first liquid crystal display panel 1 and the second liquid crystal display panel 2.

[0044] like Figure 1 As shown, the display module 100 also includes a light distribution element 4, which is used to distribute the light from the backlight module 3 to the first liquid crystal display panel 1 and the second liquid crystal display panel 2.

[0045] In the embodiments of this application, the light from the backlight module 3 is distributed to the first liquid crystal display panel 1 and the second liquid crystal display panel 2 by the light distribution element 4. Therefore, only one backlight module 3 is needed to realize the double-sided display of the first liquid crystal display panel 1 and the second liquid crystal display panel 2, thereby simplifying the structure of the display module and reducing the power consumption of the display module.

[0046] In some embodiments, the light distribution element 4 is used to transmit light from the backlight module 3 to the first liquid crystal display panel and the second liquid crystal display panel 2.

[0047] In some embodiments, such as Figure 1 As shown, the first liquid crystal display panel 1 is a transmissive liquid crystal display panel, and the second liquid crystal display panel 2 is a transmissive liquid crystal display panel. It should be noted that a transmissive liquid crystal display panel refers to a type of liquid crystal display panel that has light transmission capability and can only display images based on the light emitted by the backlight module 3. The light distribution element 4 is configured to reflect a portion of the light emitted by the backlight module 3 to the first liquid crystal display panel 1 and transmit the remaining portion of the light emitted by the backlight module 3 to the second liquid crystal display panel 2. The first liquid crystal display panel 1 is configured to display images based on the light emitted by the backlight module 3, and the second liquid crystal display panel 2 is configured to display images based on the light transmitted from the backlight module 3. The light distribution element 4 can selectively reflect the light emitted by the backlight module 3 to the first liquid crystal display panel 1 or transmit it to the second liquid crystal panel 2. Therefore, only one backlight module 3 is needed to achieve dual-sided display of the first liquid crystal display panel 1 and the second liquid crystal display panel 2, thereby simplifying the structure of the display module and reducing its power consumption.

[0048] In some embodiments, the light distribution element 4 includes an optical film 41 configured to reflect a first light ray and transmit a second light ray, the first light ray and the second light ray having different polarization directions.

[0049] In some embodiments, the optical film 41 is a dual brightness enhancement film (DBEF), which is a reflective polarization film. The reflective polarization film can reflect vertically polarized light and transmit parallel polarized light. The optical film 41 can reflect the vertically polarized light emitted from the backlight module 3 and incident on it back to the first liquid crystal display panel 1, so that this portion of the vertically polarized light can be used for displaying the image on the first liquid crystal display panel 1. This improves the light source utilization efficiency of the display module, increases the brightness of the first liquid crystal display panel 1, and reduces the power consumption of the display module. The optical film 41 can also transmit the parallel polarized light emitted from the backlight module 3 and incident on it back to the second liquid crystal display panel 2. The second liquid crystal display panel 2 can display the image based on the parallel polarized light transmitted from the optical film 41, eliminating the need for an additional backlight module for the second liquid crystal display panel 2. This simplifies the structure of the display module and reduces its power consumption.

[0050] In some embodiments, the first ray is vertically polarized light, the second ray is parallel polarized light, and the polarization direction of the first ray is perpendicular to the polarization direction of the second ray.

[0051] In some embodiments, the first liquid crystal display panel 1 includes a first polarizer 11 and a second polarizer 12 disposed on the side of the first polarizer 11 away from the backlight module 3, and the second liquid crystal display panel 2 includes a third polarizer 21 and a fourth polarizer 22 disposed on the side of the third polarizer 21 away from the backlight module 3. The direction of the transmission axis of the first polarizer 11 is the same as the polarization direction of the first light, and the direction of the transmission axis of the third polarizer 21 is the same as the polarization direction of the second light. This allows the first light to pass through the first polarizer 11 and enter the first liquid crystal display panel 1, and allows the second light to pass through the third polarizer 21 and enter the second liquid crystal display panel 2, so that the first liquid crystal display panel 1 can display an image based on the vertically polarized light transmitted by the first polarizer 11, and the second liquid crystal display panel 2 can display an image based on the parallel polarized light transmitted by the third polarizer 21.

[0052] In some embodiments, such as Figure 1 As shown, the first liquid crystal display panel 1 includes a first array substrate 13, a first opposing substrate 14, and a first liquid crystal layer (not shown in the figure). The first array substrate 13 and the first opposing substrate 14 are disposed opposite to each other. The first opposing substrate 14 is located on the side of the first array substrate 13 away from the backlight module 3. The first liquid crystal layer is disposed between the first array substrate 13 and the first opposing substrate 14. The first polarizer 11 is disposed on the side of the first array substrate 13 close to the backlight module 3. The second polarizer 12 is disposed on the side of the first opposing substrate 14 away from the backlight module 3.

[0053] In some embodiments, the first opposing substrate 14 is a color filter substrate, meaning that the first opposing substrate 14 may simultaneously include a color filter layer and a light-shielding layer. In other embodiments, the color filter layer is embedded in the first array substrate 13, and the first opposing substrate 14 includes a light-shielding layer.

[0054] In some embodiments, such as Figure 1 As shown, the second liquid crystal display panel 2 includes a second array substrate 23, a second opposing substrate 24, and a second liquid crystal layer (not shown in the figure). The second array substrate 23 and the second opposing substrate 24 are disposed opposite to each other. The second opposing substrate 24 is located on the side of the second array substrate 23 away from the backlight module 3. The second liquid crystal layer is disposed between the second array substrate 23 and the second opposing substrate 24. A third polarizer 21 is disposed on the side of the second array substrate 23 close to the backlight module 3. A fourth polarizer 22 is disposed on the side of the second opposing substrate 24 away from the backlight module 3.

[0055] In some embodiments, the second opposing substrate 24 is a color filter substrate, meaning that the second opposing substrate 24 may simultaneously include a color filter layer and a light-shielding layer. In other embodiments, the color filter layer is embedded in the second array substrate 23, and the second opposing substrate 24 includes a light-shielding layer.

[0056] In some embodiments, such as Figure 1 As shown, the second liquid crystal display panel 2 further includes a sealing layer 25, which is disposed between the periphery of the second array substrate 23 and the second opposing substrate 24. The sealing layer 25 is used to seal and bond the second array substrate 23 and the second opposing substrate 24 and prevent the second liquid crystal layer between the second array substrate 23 and the second opposing substrate 24 from overflowing.

[0057] In some embodiments, the direction of the transmission axis of the first polarizer 11 is perpendicular to the direction of the transmission axis of the third polarizer 21, and the direction of the transmission axis of the first polarizer 11 is parallel to the direction of the transmission axis of the third polarizer 21. For example, the angle between the transmission axes of the first polarizer 11 and the fourth polarizer 22 and the horizontal direction is 90 degrees, and the angle between the transmission axes of the second polarizer 12 and the third polarizer 21 and the horizontal direction is 0 degrees, that is, the polarization angle of the first polarizer 11 and the fourth polarizer 22 is 90 degrees, and the polarization angle of the second polarizer 12 and the third polarizer 21 is 0 degrees. This ensures that the first light can pass through the first polarizer 11 and enter the first liquid crystal display panel 1, and ensures that the second light can pass through the third polarizer 21 and enter the second liquid crystal display panel 2, so that the first liquid crystal display panel 1 can display an image based on the vertically polarized light transmitted by the first polarizer 11, and the second liquid crystal display panel 2 can display an image based on the parallel polarized light transmitted by the third polarizer 21.

[0058] In some embodiments, such as Figure 1As shown, the light distribution element 4 is disposed within the backlight module 3. By integrating the light distribution element 4 into the backlight module 3, the distance between the light distribution element 4 and the light source components and light guide plate within the backlight module 3 can be reduced. This not only simplifies the structure of the display module but also reduces light loss during propagation, thereby improving the light utilization rate of the display module and reducing its power consumption.

[0059] In some embodiments, such as Figure 1 As shown, the backlight module 3 includes a backplate 31 and a light source assembly 32 mounted on the backplate 31. A light distribution element 4 is disposed between the backplate 31 and the light source assembly 32. By placing the light distribution element 4 between the backplate 31 and the light source assembly 32, the light distribution element 4 is integrated into the backlight module 3. This not only simplifies the structure of the display module but also reduces light loss during propagation, thereby improving the light utilization rate of the display module and reducing its power consumption.

[0060] In some embodiments, such as Figure 1 As shown, the backplate 31 is a transparent backplate. The first liquid crystal display panel 1 is disposed on the side of the backlight module 3 away from the backplate 31, and the second liquid crystal display panel 2 is disposed on the side of the backplate 31 away from the backlight module 3. By making the backplate 31 transparent, light transmitted by the light distribution element 4 is allowed to pass through the backplate 31 and illuminate the second liquid crystal display panel 2. Therefore, only one backlight module 3 is needed to achieve double-sided display of the first liquid crystal display panel 1 and the second liquid crystal display panel 2, thereby simplifying the structure of the display module and reducing the power consumption of the display module.

[0061] In some embodiments, such as Figure 1 As shown, the light source assembly 32 includes a first light source 321 and a first light guide plate 322. One end of the first light guide plate 322 faces the light-emitting side of the first light source 321, one side of the first light guide plate 322 faces the first liquid crystal display panel 1, and the other side of the first light guide plate 322 faces the second liquid crystal display panel 2. A light distribution element 4 is disposed between the back plate 31 and the other side of the first light guide plate 322. It should be noted that one side of the first light guide plate 322 refers to the upper surface of the first light guide plate 322, and the other side of the first light guide plate 322 refers to the lower surface of the first light guide plate 322. The light distribution element 4 is disposed between the lower surface of the first light guide plate 322 and the back plate 31.

[0062] In some embodiments, such as Figure 1As shown, the back plate 31 includes a bottom plate 311 and a side plate 312, with the side plate 312 erected on the periphery of the bottom plate 311. The first light guide plate 322 and the first light source 321 are both disposed within the accommodating space formed by the bottom plate 311 and the side plate 312. The first light source 321 is fixedly mounted on the back plate 31, and the optical film 41 of the light distribution element 4 is disposed between the first light guide plate 322 and the bottom plate 311.

[0063] In some embodiments, the material of the back panel 31 includes any one of transparent materials such as glass and acrylic.

[0064] In some embodiments, such as Figure 1 As shown, the first light source 321 includes a first circuit board and a plurality of first light-emitting elements. The first circuit board is elongated, and the plurality of first light-emitting elements extend along the length of the first circuit board. The first light-emitting elements can be any one of light-emitting diodes, mini light-emitting diodes, and micro light-emitting diode chips.

[0065] In some embodiments, the light distribution element 4 is disposed between the light source assembly 32 and the second liquid crystal display panel 2. Figure 1 For example, the light distribution element 4 can be disposed not only between the first light guide plate 322 and the base plate 311, but also on the surface of the base plate 311 near the second liquid crystal display panel 2. Furthermore, the light distribution element 4 can be disposed on the side of the third polarizer 21 near the backlight module 3. This also allows for the reflection of some light emitted from the backlight module 3 to the first liquid crystal display panel 1, and the transmission of the remaining light emitted from the backlight module 3 to the second liquid crystal display panel 2, thereby improving the backlight utilization rate of the display module and reducing its power consumption.

[0066] In some embodiments, such as Figure 1 As shown, the backlight module 3 also includes an optical film 33, which is disposed on the side of the first light guide plate 322 near the first liquid crystal display panel 1. The optical film 33 may include at least one or a combination of two or more of the following: a diffusion film, a prism film, an augmentation film, and a microlens film.

[0067] In some embodiments, such as Figure 1 As shown, the display module 100 also includes a frame 6, which is fixedly mounted on the side plate 312 of the back plate 31. The inner wall of the frame 6 has an extension that extends above the first light guide plate 322. A first adhesive 7 is provided between the extension and the first light guide plate 322, bonding the extension to the first light guide plate 322. A first liquid crystal display panel 1 is disposed on the side of the extension away from the backlight module 3. A second adhesive 8 is provided between the first liquid crystal display panel 1 and the extension, fixing the first liquid crystal display panel 1 to the extension of the frame 6 via the second adhesive 8.

[0068] In some embodiments, such as Figure 1 As shown, the display module 100 also includes a third adhesive member 9, which is disposed between the second liquid crystal display panel 2 and the back plate 31. The second liquid crystal display panel 2 is fixedly connected to the back plate 31 through the third adhesive member 9.

[0069] In some embodiments, the first adhesive 7, the second adhesive 8, and the third adhesive 9 can be adhesive materials that are sticky on both sides, such as double-sided tape or pressure-sensitive adhesive.

[0070] like Figure 2 As shown, Figure 2 A schematic diagram of the structure of a second display module provided in the embodiments of this application is shown, and its structure is similar to... Figure 1 The structure of the first type of display module shown is roughly the same, the difference being that the second liquid crystal display panel 2 is a transflective liquid crystal display panel. It should be noted that a transflective liquid crystal display panel refers to a type of display panel that has a certain ability to transmit light and reflect ambient light, and can display images based on the light emitted by the backlight module and ambient light.

[0071] like Figure 2 As shown, the first liquid crystal display panel 1 is a transmissive liquid crystal display panel, and the second liquid crystal display panel 2 is a transflective liquid crystal display panel. The light distribution element 4 is configured to reflect a portion of the light emitted by the backlight module 3 back to the first liquid crystal display panel 1, allowing the first liquid crystal display panel 1 to display an image based on the light emitted by the backlight module 3. The light distribution element 4 can also transmit another portion of the light emitted by the backlight module 3 to the second liquid crystal display panel 2, allowing the second liquid crystal display panel 2 to display an image not only based on the light transmitted from the backlight module 3 but also based on ambient light. By selectively reflecting the light emitted by the backlight module 3 to the first liquid crystal display panel 1 or transmitting it to the second liquid crystal display panel 2 through the light distribution element 4, only one backlight module 3 is needed to achieve dual-sided display of the first liquid crystal display panel 1 and the second liquid crystal display panel 2, thereby simplifying the structure of the display module and reducing its power consumption.

[0072] exist Figure 2 In the illustrated embodiment, when the ambient light intensity is high, the second liquid crystal display panel 2 can display the image based solely on the ambient light, without requiring the backlight module 3 to provide light, thus further reducing the power consumption of the display module. When the ambient light is low, the backlight module 3 can provide light to the second liquid crystal display panel 2, thus ensuring good image readability of the second liquid crystal display panel 2 in dark environments.

[0073] like Figure 3 As shown, Figure 3A schematic diagram of the structure of a third display module provided in the embodiments of this application is shown, and its structure is similar to... Figure 1 The structure of the first type of display module shown is roughly the same, except that the light distribution element 4 is used to prevent the light from the backlight module 3 from being transmitted to the second liquid crystal display panel 2.

[0074] like Figure 3 As shown, the light distribution element 4 is used to transmit light from the backlight module 3 to the first liquid crystal display panel 1. The first liquid crystal display panel 1 can display images based on the light from the backlight module 3. The light distribution element 4 is also used to prevent the light from the backlight module 3 from being transmitted to the second liquid crystal display panel 2, so that the light transmitted to the light distribution element 4 is transmitted to the first liquid crystal display panel 1 as much as possible. This can improve the light utilization rate of the backlight module 3, thereby increasing the brightness of the display module and reducing the power consumption of the display module.

[0075] In some embodiments, such as Figure 3 As shown, the first liquid crystal display panel 1 is a transmissive liquid crystal display panel, and the second liquid crystal display panel 2 is a total reflective liquid crystal display panel. It should be noted that a total reflective liquid crystal display panel refers to a type of display panel that has the ability to reflect ambient light and can display images based on ambient light.

[0076] exist Figure 3 In the illustrated embodiment, the first liquid crystal display panel 1 is a transmissive liquid crystal display panel. The first liquid crystal display panel 1 can display images based on the light from the backlight module 3. Furthermore, by using a light distribution element 4 to reflect the light from the backlight module 3 back to the first liquid crystal display panel 1, the light utilization rate of the backlight module 3 can be improved, thereby increasing the brightness of the first display panel. The second liquid crystal display panel 2 can display images based on ambient light, eliminating the need for a separate backlight module. Therefore, only one backlight module 3 is required to achieve dual-sided display of the first liquid crystal display panel 1 and the second liquid crystal display panel 2, thereby simplifying the structure of the display module and further reducing its power consumption.

[0077] In some embodiments, such as Figure 3 As shown, the light distribution element 4 includes a reflective layer 42, which reflects the light from the backlight module 3 to the first liquid crystal display panel 1. By using the reflective layer 42 to reflect the light from the backlight module 3 to the first liquid crystal display panel 1, the light utilization rate of the backlight module 3 can be further improved, thereby increasing the brightness of the display module and reducing the power consumption of the display module.

[0078] In some embodiments, such as Figure 3As shown, the reflective layer 42 is disposed on the side of the second liquid crystal display panel 2 closest to the first liquid crystal display panel 1. The reflective layer 42 can reflect the light transmitted to the second liquid crystal display panel 2 back to the first liquid crystal display panel 1, thereby improving the light utilization rate of the backlight module 3 and reducing the power consumption of the display module.

[0079] In some embodiments, such as Figure 3 As shown, the reflective layer 42 is disposed on the surface of the second array substrate 23 of the second liquid crystal display panel 2 near the first liquid crystal display panel 1. The reflective layer 42 can be a reflective coating, and the material of the reflective coating can be any one of aluminum, silver, titanium dioxide and barium sulfate.

[0080] In some other embodiments, the reflective layer 42 may also be a reflective film, which may be adhered to the surface of the second array substrate 23 of the liquid crystal display panel 2 near the first liquid crystal display panel 1 by adhesive.

[0081] In some embodiments, such as Figure 3 As shown, the backlight module 3 includes a back plate 31 and a light source assembly 32 mounted on the back plate 31. The back plate 31 is a transparent back plate, which can transmit light from the backlight module 3 to the reflective layer 42 and allow light reflected by the reflective layer 42 to pass through.

[0082] In some embodiments, the light distribution element 4 is disposed between the light source assembly 32 and the second liquid crystal display panel 2. Figure 3 For example, the light distribution element 4 can be disposed not only on the surface of the second liquid crystal display panel 2 near the first liquid crystal display panel 1, but also between the light source assembly 32 and the bottom plate 311 of the back plate 31. The light distribution element 4 can also be disposed on the surface of the bottom plate 311 of the back plate 31 near the second liquid crystal display panel 2. In this way, the light irradiated on the light distribution element 4 can also be reflected back to the first liquid crystal display panel, thereby improving the backlight utilization rate of the display module and reducing the power consumption of the display module.

[0083] In some embodiments, such as Figure 3 As shown, the display module also includes an auxiliary light source component 5, which is used to emit light from the light-emitting side of the second liquid crystal display panel 2 into the second liquid crystal display panel 2. When the ambient light intensity is high, the second liquid crystal display panel 2 can display the image based solely on the ambient light, without the need for the auxiliary light source component 5 to provide light, thus further reducing the power consumption of the display module. When the ambient light intensity is low, the auxiliary light source component 5 can provide light to the second liquid crystal display panel 2, thus ensuring good image readability of the second liquid crystal display panel 2 in dark environments.

[0084] In some embodiments, such as Figure 3As shown, the auxiliary light source assembly 5 includes a second light source 51 and a second light guide plate 52. One end of the second light guide plate 52 faces the light-emitting side of the second light source 51, and one side of the second light guide plate 52 faces the second liquid crystal display panel 2. The second light source 51 is a line light source. The second light guide plate 52 can transform the auxiliary light source assembly 5 into a surface light source to provide the light required for displaying the image on the second liquid crystal display panel 2 when the ambient light is weak, thereby ensuring the readability of the image on the second liquid crystal display panel 2 in dark environments.

[0085] In some embodiments, the second light source 51 includes a second circuit board and a plurality of second light-emitting elements. The second circuit board is elongated, and the plurality of second light-emitting elements extend along the length of the second circuit board. The second light-emitting elements can be any one of light-emitting diodes, mini light-emitting diodes, and micro light-emitting diode chips.

[0086] In some embodiments, such as Figure 3 As shown, the second light source 51 is fixed to the back plate 31. Specifically, the second light source 51 can be fixed to the back plate 31 by any of the following methods: adhesive, welding, screw fixing, and clip fixing.

[0087] In some embodiments, the power of the second light source 51 is less than the power of the first light source 321. It should be noted that since the first liquid crystal display panel 1 is a transmissive liquid crystal display panel, displaying images solely based on the light emitted by the first light source 321, the first light source 321 needs sufficiently high power to ensure that the brightness of the first liquid crystal display panel 1 reaches the brightness required for normal image display. The second liquid crystal display panel 2 is a total reflection liquid crystal display panel, and its light source comes from the second light source 51 and natural light; therefore, the power requirement for the second light source 51 is lower. This embodiment avoids increasing the power consumption of the display module by making the power of the second light source 51 less than the power of the first light source 321.

[0088] Based on the display module provided in the above embodiments of this application, embodiments of this application also provide a display device. Please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a schematic diagram of a display device provided in an embodiment of this application. The display device 1000 includes a display module 100 and a housing 200, with the display module 100 disposed on the housing 200. The display module 100 can be any of the display modules provided in the above embodiments. The display device provided in the embodiments of this application can achieve the same technical effects as the display modules provided in any of the above embodiments, and will not be described in detail here.

[0089] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display module and a display device. The display module includes a first liquid crystal display panel, a second liquid crystal display panel, a backlight module, and a light distribution element. The second liquid crystal display panel is disposed on the side of the first liquid crystal display panel away from the light-emitting side of the first liquid crystal display panel, and the backlight module is disposed between the first liquid crystal display panel and the second liquid crystal display panel. By distributing light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel through the light distribution element, only one backlight module is needed to realize double-sided display of the first liquid crystal display panel and the second liquid crystal display panel, thereby simplifying the structure of the display module and reducing the power consumption of the display module.

[0090] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0091] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0092] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0093] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display module, characterized in that, include: First LCD display panel; Second LCD display panel; A backlight module is disposed between the first liquid crystal display panel and the second liquid crystal display panel; The display module further includes a light distribution element, which is used to distribute the light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel.

2. The display module as described in claim 1, characterized in that, The light distribution element is used to transmit the light from the backlight module to the first liquid crystal display panel and the second liquid crystal display panel.

3. The display module as described in claim 2, characterized in that, The first liquid crystal display panel is a transmissive liquid crystal display panel, and the second liquid crystal display panel is a transmissive liquid crystal display panel or a semi-transmissive and semi-reflective liquid crystal display panel.

4. The display module as described in claim 3, characterized in that, The light distribution element includes an optical film configured to reflect a first ray and transmit a second ray, the first ray and the second ray having opposite polarization directions.

5. The display module as described in claim 4, characterized in that, The backlight module includes a back plate and a light source assembly mounted on the back plate, and the light distribution element is disposed between the back plate and the light source assembly.

6. The display module as described in claim 5, characterized in that, The back panel is a transparent back panel.

7. The display module as described in claim 5, characterized in that, The light source assembly includes a first light source and a first light guide plate. One end of the first light guide plate faces the light-emitting side of the first light source, one side of the first light guide plate faces the first liquid crystal display panel, and the other side of the first light guide plate faces the second liquid crystal display panel. The light distribution element is disposed between the back plate and the other side of the first light guide plate.

8. The display module as described in any one of claims 3 to 7, characterized in that, The first liquid crystal display panel includes a first polarizer, a first array substrate, a first opposing substrate, and a second polarizer. The first polarizer is disposed on the side of the first array substrate close to the backlight module, and the second polarizer is disposed on the side of the first opposing substrate away from the backlight module.

9. The display module as described in claim 8, characterized in that, The second liquid crystal display panel is a transmissive liquid crystal display panel. The second liquid crystal display panel includes a third polarizer, a second array substrate, a second opposing substrate, and a fourth polarizer. The third polarizer is disposed on the side of the second array substrate close to the backlight module, and the fourth polarizer is disposed on the side of the second opposing substrate away from the backlight module. Wherein, the direction of the transmission axis of the first polarizer is different from the direction of the transmission axis of the third polarizer, and the direction of the transmission axis of the second polarizer is the same as the direction of the transmission axis of the third polarizer.

10. The display module as described in claim 9, characterized in that, The direction of the transmission axis of the first polarizer is perpendicular to the direction of the transmission axis of the third polarizer.

11. The display module as described in claim 1, characterized in that, The light distribution element is used to transmit light from the backlight module to the first liquid crystal display panel and to prevent light from the backlight module from being transmitted to the second liquid crystal display panel; the first liquid crystal display panel is a transmissive liquid crystal display panel and the second liquid crystal display panel is a total reflective liquid crystal display panel.

12. The display module as described in claim 11, characterized in that, The light distribution element includes a reflective layer, which is used to reflect the light from the backlight module to the first liquid crystal display panel.

13. The display module as described in claim 12, characterized in that, The reflective layer is disposed on the side of the second liquid crystal display panel closest to the first liquid crystal display panel.

14. The display module as described in claim 13, characterized in that, The backlight module includes a back plate and a light source assembly mounted on the back plate; The back panel is a transparent back panel to transmit light from the backlight module to the reflective layer and allow light reflected by the reflective layer to pass through.

15. The display module as described in claim 11, characterized in that, The display module also includes an auxiliary light source assembly, which is used to emit light into the second liquid crystal display panel from the light-emitting side of the second liquid crystal display panel.

16. The display module as described in claim 15, characterized in that, The auxiliary light source assembly includes a second light source and a second light guide plate. One end of the second light guide plate faces the light-emitting side of the second light source, and one side of the second light guide plate faces the second liquid crystal display panel.

17. The display module as described in claim 16, characterized in that, The backlight module includes a back plate, and the second light source is fixed on the back plate.

18. The display module as described in claim 1, characterized in that, The backlight module includes a light source assembly, and the light distribution element is disposed between the light source assembly and the second liquid crystal display panel.

19. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 18.

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