Display module and electronic device

Abstract

The application provides a display module and an electronic device. By movably configuring a backlight assembly on any display surface of a display screen, and displaying two display surfaces in different display modes, switching between different display modes is achieved. In addition, the light exit surface of the backlight assembly is directed towards one display surface, and a light source is provided by the backlight assembly to switch to a liquid crystal display mode; the reflective surface of the backlight assembly is directed towards the other display surface, and ambient light is reflected by the reflective surface to switch to an electronic paper display mode, so that free switching between liquid crystal display technology and electronic paper technology is achieved, and the product is thinned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display module and electronic equipment. BACKGROUND

[0002] In the field of display technology, liquid crystal display (LCD) and electronic paper technology are two common display technologies. LCD technology adjusts the transmittance of light by controlling the arrangement of liquid crystal molecules, thereby realizing image display. LCD technology has the characteristics of high video refresh rate and high color saturation, but it needs backlight for display, and long-time watching can easily cause eye fatigue.

[0003] Electronic paper technology is a display technology based on reflection of ambient light, which realizes image display by changing the arrangement of electronic ink particles under the action of an electric field, or by adjusting the liquid crystal to control the reflected light. Electronic paper technology does not need backlight, has the characteristics of low power consumption and reflective display, and is suitable for long-time reading of text. However, the color saturation of electronic paper technology is low, and the response time is slow, which is not as good as LCD technology in displaying dynamic images.

[0004] Therefore, it is necessary to study a display device capable of switching between electronic paper and liquid crystal to overcome the shortcomings of the prior art. SUMMARY

[0005] The technical problem solved by the present application is to provide a display module and electronic equipment, which solves the problem of how to switch between electronic paper display and liquid crystal display according to needs in the prior art.

[0006] To solve the above technical problems, the first technical solution provided by the present application is to provide a display module, which comprises:

[0007] The display screen has two oppositely arranged display surfaces, and the two display surfaces display in different display modes.

[0008] The backlight assembly has a reflection surface and a light output surface arranged oppositely; the backlight assembly is movably arranged on any display surface of the display screen, so that the light output surface is arranged towards one display surface, or the reflection surface is arranged towards the other display surface.

[0009] The display screen comprises a color array substrate and a counter substrate arranged oppositely; the first display surface is the surface of the color array substrate away from the counter substrate; and the second display surface is the surface of the counter substrate away from the color array substrate.

[0010] The display module has a liquid crystal display mode and an electronic paper display mode,

[0011] In the liquid crystal display mode, the backlight assembly is arranged on the first display surface of the display screen, the light emitting surface is arranged on the side of the reflecting surface close to the display screen, and the first display surface displays the picture.

[0012] In the electronic paper display mode, the backlight assembly is arranged on the second display surface of the display screen, the reflecting surface is arranged on the side of the light emitting surface close to the display screen, and the second display surface displays the picture.

[0013] The display screen further comprises a liquid crystal layer arranged between the color array substrate and the counter substrate; the liquid crystal layer comprises cholesteric liquid crystal.

[0014] The color array substrate comprises a first substrate, a thin film transistor layer, a color filter and a pixel electrode layer arranged in sequence.

[0015] The counter substrate comprises a second substrate and a common electrode layer arranged in sequence.

[0016] The backlight assembly comprises a light reflecting layer and a backlight source, the backlight source is arranged on one side of the light reflecting layer; and the surface of the light reflecting layer far from the reflecting surface is a reflecting surface.

[0017] The backlight assembly further comprises a diffusion plate and a prism sheet arranged in sequence, and the prism sheet is arranged on the side of the diffusion plate far from the light reflecting layer.

[0018] The surface of the light reflecting layer far from the reflecting surface is surrounded to form a containing cavity, the backlight source is arranged in the containing cavity, the light reflecting layer supports the diffusion plate, and the surface of the light reflecting layer far from the reflecting surface has a reflecting effect.

[0019] And / or,

[0020] The surface of the light reflecting layer far from the reflecting surface has a plurality of grooves, the backlight source is arranged corresponding to the grooves, and the surface of the light reflecting layer far from the reflecting surface has a reflecting effect.

[0021] And / or,

[0022] The reflecting surface is a diffuse reflecting surface.

[0023] The backlight assembly is reversibly arranged on the edge of the display screen.

[0024] The backlight assembly is hingedly connected with the display screen.

[0025] Or,

[0026] The backlight assembly is flexibly connected with the display screen.

[0027] The backlight assembly is magnetically connected with the display screen.

[0028] To solve the above technical problems, the second technical scheme provided by the present application is to provide an electronic device, which comprises:

[0029] The display module is a display module as described above.

[0030] The control module is connected with the display module, and is configured to control the display surface of the display module to display a picture.

[0031] The display module and the electronic device provided by the present application have the following beneficial effects: Different from the prior art, the present application provides a display module and an electronic device. The display module comprises a display screen and a backlight assembly. The display screen has two display surfaces arranged oppositely, and the two display surfaces display in different display modes. The backlight assembly has a reflection surface and a light exit surface arranged oppositely. The backlight assembly is movably arranged on any display surface of the display screen, so that the light exit surface is arranged towards one display surface, or the reflection surface is arranged towards the other display surface. By movably arranging the backlight assembly on any display surface of the display screen, and displaying the two display surfaces in different display modes, the switching between different display modes is realized. In addition, the light exit surface of the backlight assembly is arranged towards one display surface, and a light source is provided by the backlight assembly to switch to a liquid crystal display mode; the reflection surface of the backlight assembly is arranged towards the other display surface, and ambient light is reflected by the reflection surface to switch to an electronic paper display mode, so that the free switching between the liquid crystal display technology and the electronic paper technology is realized, and the thinness of the product is realized. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0033] Figure 1 is a structural schematic diagram of an embodiment of the display module provided by the present application, which switches to a liquid crystal display mode;

[0034] Figure 2 is a structural schematic diagram of an embodiment of the display module provided by the present application, which switches to an electronic paper display mode;

[0035] Figure 3 is a structural schematic diagram of an embodiment of the display screen provided by the present application;

[0036] Figure 4 is a structural schematic diagram of a first embodiment of the backlight assembly provided by the present application;

[0037] Figure 5 is a structural schematic diagram of a second embodiment of the backlight assembly provided by the present application;

[0038] Figure 6 is a structural schematic diagram of a third embodiment of the backlight assembly provided by the present application;

[0039] Figure 7 Fig. 7 is a structural schematic diagram of a fourth embodiment of the backlight assembly provided in the present application;

[0040] Figure 8 Fig. 8 is a schematic diagram of the display module provided in the present application, which is switched from the liquid crystal display mode to the electronic paper display mode;

[0041] Figure 9 Fig. 9 is a structural schematic diagram of an embodiment of the electronic device provided in the present application.

[0042] Explanation of the reference signs:

[0043] 100, display module; 10, display screen; 101, display surface; 1011, first display surface; 1012, second display surface; 102, display area; 103, non-display area; 11, color array substrate; 111, first substrate; 112, thin film transistor layer; 1121, gate layer; 1122, gate insulating layer; 1123, source-drain layer; 113, color filter; 1131, color resist; 114, pixel electrode layer; 115, interlayer insulating layer; 12, opposite substrate; 121, second substrate; 122, common electrode layer; 123, black matrix; 13, liquid crystal layer; 14, barrier wall; 20, backlight assembly; 201, reflecting surface; 202, light emitting surface; 21, light reflecting layer; 211, accommodating cavity; 212, groove; 213, sink; 22, backlight source; 23, diffusion plate; 24, prism sheet; 200, control module; 300, electronic device. DETAILED DESCRIPTION

[0044] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, persons having ordinary skill in the art will appreciate that the present application can be practiced without some or all of the specific details. For example, electrical connections between components have not been shown, except when necessary in order to convey the essence of the present application.

[0046] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0047] The terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of technical features indicated. Thus, features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as upper, lower, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0048] Reference herein to "embodiments" means that the particular features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] Please refer to Figures 1 to 4 , Figure 1 is a structural schematic diagram of an embodiment of a display module provided by the present application, which switches to a liquid crystal display mode, Figure 2 is a structural schematic diagram of an embodiment of a display module provided by the present application, which switches to an electronic paper display mode, Figure 3 is a structural schematic diagram of an embodiment of a display screen provided by the present application, Figure 4 is a structural schematic diagram of a first embodiment of a backlight assembly provided by the present application.

[0050] The present application provides a display module 100. The display module 100 includes a display screen 10 and a backlight assembly 20. The display screen 10 has two display surfaces 101 arranged oppositely, and the two display surfaces 101 display in different display modes. The backlight assembly 20 has a reflection surface 201 and a light exit surface 202 arranged oppositely. The backlight assembly 20 is movably arranged on any display surface 101 of the display screen 10, so that the light exit surface 202 is arranged towards one display surface 101, or the reflection surface 201 is arranged towards the other display surface 101.

[0051] By movably configuring the backlight assembly 20 on any display surface 101 of the display screen 10, and the two display surfaces 101 display in different display modes, the switching of different display modes is realized. And the light emitting surface 202 of the backlight assembly 20 is directed to a display surface 101, and the backlight assembly 20 provides a light source to switch to the liquid crystal display mode; the reflecting surface 201 of the backlight assembly 20 is directed to another display surface 101, and the reflecting surface 201 reflects ambient light to switch to the electronic paper display mode, so as to realize the free switching of the liquid crystal display technology and the electronic paper technology, and realize the thinning of the product.

[0052] In some embodiments, the display screen 10 includes a color array substrate 11 and a counter substrate 12 arranged opposite to each other. The side surface of the color array substrate 11 away from the counter substrate 12 is a first display surface 1011. The side surface of the counter substrate 12 away from the color array substrate 11 is a second display surface 1012.

[0053] The display module 100 has a liquid crystal display mode and an electronic paper display mode.

[0054] In the liquid crystal display mode, the backlight assembly 20 is arranged on the first display surface 1011 of the display screen 10, the light emitting surface 202 is arranged on the side of the reflecting surface 201 close to the display screen 10, and the first display surface 1011 displays a picture.

[0055] In the electronic paper display mode, the backlight assembly 20 is arranged on the second display surface 1012 of the display screen 10, the reflecting surface 201 is arranged on the side of the light emitting surface 202 close to the display screen 10, and the second display surface 1012 displays a picture.

[0056] It should be noted that the first display surface 1011 and the second display surface 1012 in the embodiments of the present application are both display surfaces 101, and only the first and second display surfaces 101 are used to distinguish the display surfaces 101 at different positions.

[0057] In the liquid crystal display mode, the backlight assembly 20 is arranged opposite to the display screen 10, the backlight assembly 20 is arranged on the first display surface 1011 of the display screen 10, and the light emitting surface 202 of the backlight assembly 20 is arranged on the first display surface 1011.

[0058] In the electronic paper display mode, the backlight assembly 20 is arranged opposite to the display screen 10, the backlight assembly 20 is arranged on the second display surface 1012 of the display screen 10, and the reflecting surface 201 of the backlight assembly 20 is arranged on the second display surface 1012.

[0059] In the non-display state, i.e. in the non-liquid crystal display mode and in the non-electronic paper display mode, the backlight assembly 20 can be arranged opposite to the display screen 10 or can be arranged at other positions, which is not limited herein and can be selected according to actual needs. For example, in the non-display state, the backlight assembly 20 can be arranged at the side of the display screen 10 and can be arranged obliquely or parallel to the display screen 10.

[0060] In the liquid crystal display mode, only the first display surface 1011 displays the picture and the second display surface 1012 does not display the picture. In the electronic paper display mode, only the second display surface 1012 displays the picture and the first display surface 1011 does not display the picture. That is, when the display module 100 displays the picture, the first display surface 1011 or the second display surface 1012 displays the picture.

[0061] In some embodiments, the color array substrate 11 comprises a first substrate 111, a thin film transistor layer 112, a color filter 113 and a pixel electrode layer 114 which are sequentially stacked.

[0062] The counter substrate 12 comprises a second substrate 121 and a common electrode layer 122 which are sequentially stacked.

[0063] The first substrate 111 is arranged on the side of the common electrode layer 122 away from the second substrate 121.

[0064] The color filter 113 is directly integrated onto the array substrate by using the COA (Color Filter on Array) technology to form the color array substrate 11, which can simplify the manufacturing process and improve the display performance.

[0065] The first substrate 111 and the second substrate 121 are both transparent. The first substrate 111 and the second substrate 121 can be hard materials such as glass, quartz, sapphire, etc. or flexible materials such as polyimide (PI), polyethylene terephthalate (PET), etc. The materials of the first substrate 111 and the second substrate 121 are not limited herein and can be selected according to actual needs.

[0066] Exemplarily, the thin film transistor layer 112 comprises a gate layer 1121, a gate insulating layer 1122 and a source-drain layer 1123 which are sequentially stacked. The thin film transistor layer 112 is used to control the opening and closing of the pixels in the display module 100.

[0067] In other embodiments, the thin film transistor layer 112 can have other structures, which are not limited herein and can be selected according to actual needs.

[0068] The color filter 113 is used to realize color display of the display module 100.

[0069] The color filter 113 includes color resistors 1131 of red, green and blue colors, and is used to decompose white light into three basic colors of red, green and blue, so as to realize color display.

[0070] In other embodiments, the color filter 113 can include color resistors 1131 of other colors, and more colors. The arrangement of the color resistors 1131 of different colors is not limited here, and is selected according to actual needs.

[0071] The pixel electrode layer 114 is a transparent electrode layer. The pixel electrode layer 114 is connected to the drain via in the source-drain layer 1123. The pixel electrode layer 114 includes transparent conductive oxide (TCO), such as indium tin oxide (ITO), aluminum zinc oxide (AZO), indium zinc oxide (IZO), etc.

[0072] The pixel electrode layer 114 can also be other materials, and the material of the pixel electrode layer 114 is not limited here, and is selected according to actual needs.

[0073] The common electrode layer 122 is a transparent electrode layer. The common electrode layer 122 includes transparent conductive oxide (TCO), such as indium tin oxide (ITO), aluminum zinc oxide (AZO), indium zinc oxide (IZO), etc.

[0074] The material of the common electrode layer 122 can be the same as or different from the material of the pixel electrode layer 114, and is not limited here, and is selected according to actual needs.

[0075] In some embodiments, the display screen 10 further includes a liquid crystal layer 13 disposed between the color array substrate 11 and the counter substrate 12. The liquid crystal layer 13 includes cholesteric liquid crystal.

[0076] The cholesteric liquid crystal has birefringence, that is, different refractive indices for light of different polarization directions, so that the display effect in the liquid crystal display mode can be realized without using a polarizer. The cholesteric liquid crystal has bistability, so that the power in the electronic paper display mode can be reduced.

[0077] The common electrode layer 122 and the pixel electrode layer 114 are used to generate an electric field to control the deflection of the liquid crystal in the liquid crystal layer 13.

[0078] In the embodiments of the present application, the liquid crystal display technology is introduced, so that the display effect in the electronic paper display mode can be improved, so that text can be displayed while relatively delicate images and videos can also be displayed.

[0079] In some embodiments, the display screen 10 further comprises a barrier wall 14. The display screen 10 has a display area 102 and a non-display area 103, and the barrier wall 14 is arranged corresponding to the non-display area 103, and the liquid crystal layer 13 is arranged corresponding to the display area 102. The barrier wall 14 is located between the color array substrate 11 and the opposite substrate 12, and between the liquid crystal layer 13, which can keep the thickness of the liquid crystal layer 13 uniform, prevent the liquid crystal molecules in the liquid crystal layer 13 from being distributed unevenly, provide mechanical support, reduce light leakage, and improve manufacturing yield, etc.

[0080] Exemplarily, the barrier wall 14 is a conical column structure.

[0081] In other embodiments, the barrier wall 14 can be other structures, and the shape and material of the barrier wall 14 are not limited here, and can be selected according to actual needs.

[0082] In some embodiments, the opposite substrate 12 further comprises a black matrix 123. The black matrix 123 is arranged corresponding to the non-display area 103. The black matrix 123 is used to block unnecessary light, reduce light leakage, and improve contrast.

[0083] The material of the black matrix 123 is not limited here, and can be selected according to actual needs.

[0084] Exemplarily, one end of the barrier wall 14 towards the opposite substrate 12 abuts against the black matrix 123, and the orthographic projection of the black matrix 123 on the second substrate 121 covers the orthographic projection of the barrier wall 14 on the second substrate 121, so as to avoid the barrier wall 14 occupying the space of the display area 102.

[0085] In some embodiments, the display screen 10 comprises an interlayer insulating layer 115, which is arranged between the color filter 113 and the pixel electrode layer 114. The interlayer insulating layer 115 has light transmission. The material of the interlayer insulating layer 115 is not limited here, and can be selected according to actual needs.

[0086] In some embodiments, the backlight assembly 20 comprises a light-reflecting layer 21 and a backlight source 22, and the backlight source 22 is arranged on one side of the light-reflecting layer 21. The surface of the light-reflecting layer 21 far away from the backlight source 22 is a reflecting surface 201.

[0087] The backlight source 22 is used to provide light for the display screen 10 in the liquid crystal display mode.

[0088] In the liquid crystal display mode, the backlight source 22 is lit to provide light for the display screen 10.

[0089] In the electronic paper display mode, the backlight source 22 is not working, and the reflecting surface 201 reflects ambient light to the display screen 10.

[0090] For example, the reflective layer 21 can be a reflective coating, a plate-shaped single-sided reflective layer, a plate-shaped double-sided reflective layer, or other irregularly shaped reflective layers. There are no major restrictions here, and the selection can be made according to actual needs.

[0091] The backlight assembly 20 also includes a diffuser plate 23 and a prism sheet 24 stacked in sequence, with the prism sheet 24 disposed on the side of the diffuser plate 23 away from the reflective layer 21.

[0092] Please see Figures 1 to 7 , Figure 5 This is a schematic diagram of the structure of the second embodiment of the backlight assembly provided in this application. Figure 6 This is a structural schematic diagram of the third embodiment of the backlight assembly provided in this application. Figure 7 This is a structural schematic diagram of the fourth embodiment of the backlight assembly provided in this application.

[0093] In some embodiments, the surface of the reflective layer 21 away from the reflective surface 201 surrounds a cavity 211, the backlight 22 is disposed in the cavity 211, the reflective layer 21 supports the diffuser plate 23, and the surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect; and / or, the surface of the reflective layer 21 away from the reflective surface 201 has a plurality of grooves 212, the backlight 22 is disposed corresponding to the grooves 212, and the surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect; and / or, the reflective surface 201 is a diffuse reflective surface 201.

[0094] The diffuser plate 23 is used to evenly disperse light, eliminate bright spots and dark spots, and prevent uneven brightness of the display screen 10.

[0095] The function of the prism sheet 24 is to refract and converge the light emitted from the backlight 22, thereby reducing light loss.

[0096] In some specific embodiments, such as Figure 5 As shown, the reflective layer 21, with its surface away from the reflective surface 201, forms a cavity 211. The backlight source 22 is disposed within the cavity 211. The reflective layer 21 supports the diffuser plate 23, and the surface of the reflective layer 21 away from the reflective surface 201 has a reflective function. The placement of the backlight source 22 within the cavity 211 reduces the thickness of the backlight assembly 20 and allows the light-emitting layer to function as a support for the diffuser plate 23, simplifying the structure of the backlight assembly 20. The reflective function of the surface of the reflective layer 21 away from the reflective surface 201, i.e., the surface surrounding the cavity 211, improves the utilization rate of the light emitted by the backlight source 22.

[0097] Exemplarily, the light-reflecting layer 21 has a groove 213 on the side away from the reflecting surface 201, and the space surrounded by the groove 213 forms a receiving cavity 211, and the plurality of backlight sources 22 are arranged in the groove 213. The inner wall surface of the groove 213 has a reflecting effect to reflect the lateral light of the backlight sources 22. The groove 213 is a rectangular groove.

[0098] In the liquid crystal display mode, the backlight sources 22 are lit, the forward light emitted by the backlight sources 22 is uniformly provided to the display screen 10 through the diffusion plate 23 and the prism sheet 24, and the lateral light emitted by the backlight sources 22 is reflected to the diffusion plate 23 through the side wall of the receiving cavity 211, and the multiple light rays are re-collected to reduce the loss of brightness.

[0099] In other embodiments, as shown in FIG. 2B, the light-reflecting layer 21 has a plurality of grooves 212 on the surface away from the reflecting surface 201, and the backlight sources 22 are arranged corresponding to the grooves 212, and the surface of the light-reflecting layer 21 away from the reflecting surface 201 has a reflecting effect. Figure 6 That is, the side wall of the groove 212 has a reflecting effect, and the backlight sources 22 arranged in the groove 212 can reduce the scattering of light, improve the utilization rate of light, and also can thin the thickness of the backlight assembly 20.

[0100] Exemplarily, the side wall surface of the groove 212 is an arc surface. In the liquid crystal display mode, the backlight sources 22 are lit, the forward light emitted by the backlight sources 22 is uniformly provided to the display screen 10 through the diffusion plate 23 and the prism sheet 24, and the lateral light emitted by the backlight sources 22 is reflected to the diffusion plate 23 through the side wall of the groove 212, and the multiple light rays are re-collected to reduce the loss of brightness.

[0101] In yet other embodiments, as shown in FIG. 2C, the reflecting surface 201 is a diffuse reflecting surface 201 to prevent specular reflection. Figure 7

[0102] Specifically, the reflecting surface 201 can be a concave-convex surface. In the electronic paper display mode, the reflecting surface 201 diffusely reflects the ambient light to achieve the effect of paper display.

[0103] Exemplarily, the light-reflecting layer 21 has a plurality of spaced half-round protrusions on the side away from the backlight sources 22 to form a concave-convex surface, that is, the reflecting surface 201 is a concave-convex surface.

[0104] In other embodiments, the reflecting surface 201 can be other non-planar structures, as long as the reflecting surface 201 is a diffuse reflecting surface 201. The groove 212 and the groove 213 can also be other shapes, which are not limited here and can be selected according to actual needs.

[0105] In other embodiments, any two of the above embodiments can be combined to obtain different structures of the light-reflecting layer 21 and the arrangement mode of the backlight sources 22. ​

[0106] In the embodiment, as shown in Figure 4 The surface of the light reflection layer 21 away from the reflecting surface 201 is provided with a recess 212, and the backlight source 22 is arranged in the accommodating cavity 211 and corresponds to the recess 212. The surface of the light reflection layer 21 away from the reflecting surface 201 has a reflection effect.

[0107] Specifically, the side of the light reflection layer 21 away from the reflecting surface 201 is provided with a sunken groove 213, and the recess 212 is arranged on the bottom wall of the sunken groove 213. The space surrounded by the sunken groove 213 and the recess 212 forms the accommodating cavity 211, and the backlight source 22 is arranged in the recess 212. The inner wall surface of the sunken groove 213 and the inner wall surface of the recess 212 both have a reflection effect to reflect the lateral light of the backlight source 22.

[0108] In some embodiments, the backlight source 22 can be a light emitting diode (LED).

[0109] In other embodiments, the backlight source 22 can also be other light emitting elements.

[0110] The size and shape of the backlight source 22 are not limited here and can be selected according to actual needs. For example, the LED can be a mini LED or a micro-LED.

[0111] The backlight assembly 20 further includes a control circuit layer (not shown in the figure) electrically connected with the backlight source 22, which is used to control the backlight source 22 to emit light. The structure and position of the control circuit layer are not limited here and can be selected according to actual needs.

[0112] Please refer to Figures 1 to 8 , Figure 8 FIG. 1 is a schematic diagram of a display module provided by the embodiment of the present application, which shows the display module switching from a liquid crystal display mode to an electronic paper display mode.

[0113] In some embodiments, the backlight assembly 20 can be reversibly arranged at the edge of the display screen 10. The backlight assembly 20 is connected with the edge of the display screen 10, and the backlight assembly 20 can be flipped by 360 degrees, so that the backlight assembly 20 can be flipped to be attached with the first display surface 1011 of the display screen 10 to switch to the liquid crystal display mode for display; and the backlight assembly 20 can be flipped to be attached with the second display surface 1012 of the display screen 10 to switch to the electronic paper display mode for display.

[0114] The backlight assembly 20 is reversibly arranged at the edge of the display screen 10, which can freely switch between the liquid crystal display mode and the electronic paper display mode according to different use scenarios and requirements, and is conducive to the thin design of the display module 100. In addition, in the non-display state, the backlight assembly 20 can be flipped to any display surface 101 of the display screen 10, so that the display module 100 is arranged opposite to the display screen 10, thereby facilitating the storage of the display module 100.

[0115] Exemplarily, the backlight assembly 20 is hinged to the display screen 10.

[0116] Exemplarily, the backlight assembly 20 is flexibly connected to the display screen 10. The backlight assembly 20 and the display screen 10 are connected through a flexible substrate (not shown in the figure).

[0117] In other embodiments, the backlight assembly 20 is magnetically connected to the display screen 10. Magnetic members (not shown in the figure) can be arranged at the edge of the backlight assembly 20 and the edge of the display screen 10, and the backlight assembly 20 and the display screen 10 are attached through magnetic force.

[0118] Compared with the related art, the display module 100 provided by the embodiments of the present application can switch to the electronic paper display mode in a light environment, reduce the burden on the eyes, and protect the eyes. In addition, when high-brightness display is not required, the display module 100 can switch to the electronic paper display mode, thereby reducing power consumption and prolonging battery life. Secondly, the display module 100 provided by the embodiments of the present application can realize free switching between the liquid crystal display mode and the electronic paper display mode without large-scale modification, and has good compatibility. In addition, the liquid crystal display mode and the electronic paper display mode in the display module 100 provided by the embodiments of the present application share the same display screen 10, which is conducive to reducing the product thickness.

[0119] Specifically, the embodiments of the present application can realize dual-mode switching between the liquid crystal display mode and the electronic paper display mode, and the user can flexibly adjust according to different use scenarios and requirements. The user can select the liquid crystal display mode in a scenario requiring high color saturation and high video refresh rate, and can select the electronic paper display mode in a scenario requiring long-time reading of text and protection of the eyes. The function of dual-mode free switching makes the display module 100 provided by the embodiments of the present application have both display effect and eye protection effect, and has good compatibility.

[0120] Please refer to Figures 1 to 9 , Figure 9 which is a structural schematic diagram of an embodiment of an electronic device provided by the embodiments of the present application.

[0121] The embodiments of the present application provide an electronic device 300, which comprises a display module 100 and a control module 200.

[0122] The display module 100 is the display module 100 described above.

[0123] The control module 200 is connected with the display module 100, and is configured to control the display face 101 of the display module 100 to display a picture.

[0124] Exemplarily, in the liquid crystal display mode, the control module 200 controls the first display face 1011 to display a picture; and in the electronic paper display mode, the control module 200 controls the second display face 1012 to display a picture.

[0125] The electronic device 300 can further include one or more of the following components (none of which are shown in the figures): a memory, a power supply component, a processing component, a multimedia component, an audio component, an input / output (I / O) interface, a sensor component, and a communication component. The specific structures and functions of these components are the same as or similar to those in the related art, and details are not described herein. The electronic device 300 can be a computer, a digital broadcast terminal, a messaging device, a game console, a medical device, a fitness device, a personal digital assistant, or the like, and the present application is not limited in this regard. The selection is made according to actual needs.

[0126] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0127] The above is merely an implementation of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A display module, characterized by The display module comprises: a display screen having two display surfaces arranged oppositely and displaying in different display modes; a backlight assembly having a reflecting surface and a light emitting surface arranged oppositely; the backlight assembly is movably arranged on any of the display surfaces of the display screen, so that the light emitting surface is arranged towards one of the display surfaces or the reflecting surface is arranged towards the other display surface; the backlight assembly comprises a reflecting layer and a backlight source arranged on one side of the reflecting layer; the surface of the reflecting layer away from the backlight source is the reflecting surface; the backlight assembly further comprises a diffusion plate and a prism sheet arranged in sequence; the prism sheet is arranged on the side of the diffusion plate away from the reflecting layer; the surface of the reflecting layer away from the reflecting surface is surrounded to form a receiving cavity; the backlight source is arranged in the receiving cavity; the reflecting layer supports the diffusion plate; and the surface of the reflecting layer away from the reflecting surface has a reflecting effect.

2. The display module of claim 1, wherein, The display screen comprises a color array substrate and a counter substrate arranged oppositely; the surface of the color array substrate away from the counter substrate is a first display surface; and the surface of the counter substrate away from the color array substrate is a second display surface; the display module has a liquid crystal display mode and an electronic paper display mode, in the liquid crystal display mode, the backlight assembly is arranged on the first display surface of the display screen; the light emitting surface is arranged on the side of the reflecting surface close to the display screen; and the first display surface displays a picture; in the electronic paper display mode, the backlight assembly is arranged on the second display surface of the display screen; the reflecting surface is arranged on the side of the light emitting surface close to the display screen; and the second display surface displays a picture.

3. The display module of claim 2, wherein, The display screen further comprises a liquid crystal layer arranged between the color array substrate and the counter substrate; and the liquid crystal layer comprises cholesteric liquid crystal.

4. The display module of claim 2, wherein, The color array substrate comprises a first substrate, a thin film transistor layer, a color filter, and a pixel electrode layer arranged in sequence; The counter substrate comprises a second substrate and a common electrode layer arranged in sequence.

5. The display module of claim 1, wherein, The surface of the reflecting layer away from the reflecting surface has a plurality of grooves; and the backlight source is arranged corresponding to the grooves. The reflecting surface is a diffuse reflecting surface. The backlight assembly is reversibly arranged on the edge of the display screen.

6. The display module of claim 1, wherein, The backlight assembly is hingedly connected with the display screen.

7. The display module of claim 6, wherein, The backlight assembly is flexibly connected with the display screen. The backlight assembly is magnetically connected with the display screen. The display module comprises:

8. The display module of claim 1, wherein, the display module as claimed in any one of claims 1 to 8; 9. An electronic device, comprising: a control module connected with the display module and used for controlling the display surface of the display module to display a picture. ​ ​

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