Display module and electronic equipment

Abstract

The invention provides a display module and electronic equipment. The backlight assembly can be movably arranged on any display surface of the display screen, and the two display surfaces display in different display modes, so that switching of the different display modes is realized. And enabling the light emitting surface of the backlight assembly to face a display surface, and utilizing the backlight assembly to provide a light source so as to switch to a liquid crystal display mode, the reflecting surface of the backlight assembly faces the other display surface, and the reflecting surface is used for reflecting ambient light to switch to the electronic paper display mode, so that free switching between a liquid crystal display technology and an electronic paper technology is realized, and the product is light and thin.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and an electronic device. Background Art

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

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

[0004] Therefore, it is necessary to study a display device that can realize the switching between electronic paper and liquid crystal to cope with the shortcomings of the existing technology. Summary of the invention

[0005] The main technical problem solved by the present application is to provide a display module and an electronic device to solve the problem of how to switch between electronic paper display and liquid crystal display as needed in the prior art.

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

[0007] A display screen having two display surfaces arranged opposite to each other, and the two display surfaces display in different display modes;

[0008] The backlight assembly has a reflective surface and a light emitting surface which are arranged opposite to each other. The backlight assembly can be movably arranged on any display surface of the display screen so that the light emitting surface is arranged toward one display surface, or the reflective surface is arranged toward another display surface.

[0009] The display screen includes a color array substrate and an opposite substrate that are arranged opposite to each other; a surface of the color array substrate facing away from the opposite substrate is a first display surface; a surface of the opposite substrate facing away from the color array substrate is a second display surface;

[0010] The display module has LCD display mode and 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 reflective 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 reflective 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, which is arranged between the color array substrate and the opposite substrate; the liquid crystal layer comprises cholesteric liquid crystal.

[0014] The color array substrate includes a first substrate, a thin film transistor layer, a color filter and a pixel electrode layer which are stacked in sequence;

[0015] The opposite substrate includes a second substrate and a common electrode layer which are stacked in sequence.

[0016] The backlight assembly includes a reflective layer and a backlight source, wherein the backlight source is arranged on one side of the reflective layer; and a surface of the reflective layer on a side away from the backlight source is a reflective surface.

[0017] The backlight assembly further comprises a diffusion plate and a prism sheet which are stacked in sequence, and the prism sheet is arranged on a side of the diffusion plate away from the reflective layer;

[0018] The surface of the reflective layer away from the reflective surface is surrounded to form a containing cavity, the backlight source is arranged in the containing cavity, the reflective layer supports the diffusion plate, and the surface of the reflective layer away from the reflective surface has a reflective effect;

[0019] and / or,

[0020] The surface of the reflective layer away from the reflective surface has a plurality of grooves, the backlight source is arranged corresponding to the grooves, and the surface of the reflective layer away from the reflective surface has a reflective effect;

[0021] and / or,

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

[0023] The backlight assembly is flippably arranged at the edge of the display screen.

[0024] Wherein, the backlight assembly is hinged to the display screen;

[0025] or,

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

[0027] Among them, the backlight assembly is magnetically connected to the display screen.

[0028] In order to solve the above technical problems, the second technical solution provided by the present application is to provide an electronic device, which includes:

[0029] A display module, such as the display module described above;

[0030] The control module is connected to the display module and is used to control the display surface of the display module to display images.

[0031] Beneficial effects of the present application: Different from the prior art, the present application provides a display module and an electronic device, wherein the display module includes a display screen and a backlight assembly. The display screen has two display surfaces arranged opposite to each other, and the two display surfaces are displayed in different display modes. The backlight assembly has a reflective surface and a light-emitting surface arranged opposite to each other. The backlight assembly can be movably configured on any display surface of the display screen so that the light-emitting surface is arranged toward one display surface, or the reflective surface is arranged toward the other display surface. By movably configuring the backlight assembly on any display surface of the display screen, and the two display surfaces are displayed in different display modes, switching between different display modes can be achieved. In addition, the light-emitting surface of the backlight assembly is directed toward one display surface, and the light source provided by the backlight assembly is switched to the liquid crystal display mode; the reflective surface of the backlight assembly is directed toward the other display surface, and the reflective surface is used to reflect ambient light to switch to the electronic paper display mode, thereby achieving free switching between liquid crystal display technology and electronic paper technology, and achieving lightweight products. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without any creative work.

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

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

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

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

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

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

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

[0040] Figure 8 is a schematic diagram of a display module provided in an embodiment of the present application switching from a liquid crystal display mode to an electronic paper display mode;

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

[0042] Description of Figure Numbers:

[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 insulation layer; 1123, source and drain layer; 113, color filter; 1131, color resistance; 114, pixel electrode layer ; 115, interlayer insulating layer; 12, opposing substrate; 121, second substrate; 122, common electrode layer; 123, black matrix; 13, liquid crystal layer; 14, retaining wall; 20, backlight assembly; 201, reflecting surface; 202, light emitting surface; 21, reflecting layer; 211, accommodating cavity; 212, groove; 213, sinking groove; 22, backlight source; 23, diffusion plate; 24, prism sheet; 200, control module; 300, electronic device. DETAILED DESCRIPTION

[0044] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0045] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical workers in the field without making creative work are within the scope of protection of this application.

[0047] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] See also Figures 1 to 4 , Figure 1 is a schematic structural diagram of an embodiment of a display module switched to a liquid crystal display mode provided in an embodiment of the present application, Figure 2 is a structural schematic diagram of an embodiment of a display module switched to an electronic paper display mode provided in an embodiment of the present application, Figure 3 is a structural schematic diagram of an embodiment of a display screen provided by the present application, Figure 4 It is a structural schematic diagram of the first embodiment of the backlight assembly provided in this application.

[0050] The embodiment of 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 opposite to each other, and the two display surfaces 101 display in different display modes. The backlight assembly 20 has a reflective surface 201 and a light emitting surface 202 arranged opposite to each other. The backlight assembly 20 can be movably configured on any display surface 101 of the display screen 10, so that the light emitting surface 202 is arranged toward one display surface 101, or the reflective surface 201 is arranged toward the other display surface 101.

[0051] By movably configuring the backlight assembly 20 on any display surface 101 of the display screen 10, and displaying the two display surfaces 101 in different display modes, the switching of different display modes can be realized. In addition, the light emitting surface 202 of the backlight assembly 20 is directed toward one display surface 101, and the backlight assembly 20 is used to provide light source to switch to the liquid crystal display mode; the reflective surface 201 of the backlight assembly 20 is directed toward the other display surface 101, and the reflective surface 201 is used to reflect ambient light to switch to the electronic paper display mode, thereby realizing the free switching of the liquid crystal display technology and the electronic paper technology, and realizing the thinness of the product.

[0052] In some embodiments, the display screen 10 includes a color array substrate 11 and an opposite substrate 12. The side surface of the color array substrate 11 facing away from the opposite substrate 12 is a first display surface 1011. The side surface of the opposite substrate 12 facing 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 disposed on the first display surface 1011 of the display screen 10 , the light emitting surface 202 is disposed on a side of the reflective surface 201 close to the display screen 10 , and the first display surface 1011 displays images.

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

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

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

[0058] In the electronic paper display mode, the backlight assembly 20 is disposed opposite to the display screen 10 , the backlight assembly 20 is disposed on the second display surface 1012 of the display screen 10 , and the reflective surface 201 of the backlight assembly 20 is disposed in contact with the second display surface 1012 .

[0059] In the non-display state, that is, in the non-liquid crystal display mode and 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 here and can be selected according to actual needs. For example, in the non-display state, the backlight assembly 20 can be located 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. In other words, 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 includes a first substrate 111 , a thin film transistor layer 112 , a color filter 113 , and a pixel electrode layer 114 which are stacked in sequence.

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

[0063] The first substrate 111 is disposed on a 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 (array substrate) 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 light-transmissive. The first substrate 111 and the second substrate 121 can be made of hard materials, such as glass, quartz, sapphire, etc.; or they can be made of flexible materials, such as polyimide (PI), polyethylene terephthalate (PET), etc. There is no restriction on the materials of the first substrate 111 and the second substrate 121, and they can be selected according to actual needs.

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

[0067] In other embodiments, the thin film transistor layer 112 may be other structures, which are not restricted here and are selected according to actual needs.

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

[0069] Exemplarily, the color filter 113 includes color resists 1131 of three colors: red, green, and blue. The color filter 113 is used to decompose white light into three basic colors: red, green, and blue, thereby achieving color display.

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

[0071] Exemplarily, 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 electrode layer 1123. The pixel electrode layer 114 includes a transparent conductive oxide (TCO): such as indium tin oxide (ITO), aluminum zinc oxide (AZO), zinc tin oxide (IZO), etc.

[0072] The pixel electrode layer 114 may also be made of other materials. There is no limitation on the material of the pixel electrode layer 114 and the material is selected according to actual needs.

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

[0074] The material of the common electrode layer 122 and the material of the pixel electrode layer 114 may be the same or different, and there are no excessive restrictions here, and the material is selected according to actual needs.

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

[0076] By using cholesteric liquid crystal and utilizing its birefringence, that is, having different refractive indices for light in different polarization directions, the display effect in liquid crystal display mode can be achieved without using a polarizer; and cholesteric liquid crystal has a bi-stability characteristic, which can reduce the power in the electronic paper display mode.

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

[0078] In the embodiment of the present application, the introduction of liquid crystal display technology can improve the display effect in the electronic paper display mode, so that while displaying text, more delicate images and videos can also be displayed.

[0079] In some embodiments, the display screen 10 further includes a retaining wall 14. The display screen 10 has a display area 102 and a non-display area 103, the retaining 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 retaining wall 14 is located between the color array substrate 11 and the opposite substrate 12, and between the liquid crystal layers 13, and can play the role of maintaining a uniform thickness of the liquid crystal layer 13, preventing uneven distribution of liquid crystal molecules in the liquid crystal layer 13, providing mechanical support, reducing light leakage, and improving manufacturing yield.

[0080] Exemplarily, the retaining wall 14 is a tapered columnar structure.

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

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

[0083] There is no limitation on the material of the black matrix 123 , and the material can be selected according to actual needs.

[0084] Exemplarily, one end of the retaining wall 14 facing 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 retaining wall 14 on the second substrate 121 to prevent the retaining wall 14 from occupying the space of the display area 102 .

[0085] In some embodiments, the display screen 10 includes an interlayer insulating layer 115, which is disposed between the color filter 113 and the pixel electrode layer 114. The interlayer insulating layer 115 is light-transmissive. The material of the interlayer insulating layer 115 is not limited and is selected according to actual needs.

[0086] In some embodiments, the backlight assembly 20 includes a reflective layer 21 and a backlight source 22, and the backlight source 22 is disposed on one side of the reflective layer 21. A surface of the reflective layer 21 that is away from the backlight source 22 is a reflective 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 turned on to provide light for the display screen 10 .

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

[0090] Exemplarily, the reflective layer 21 can be a reflective coating, a plate-shaped single-sided reflective layer, a plate-shaped double-sided reflective layer, or a reflective layer of other irregular shapes. There are no excessive restrictions here and the selection is made according to actual needs.

[0091] The backlight assembly 20 further includes a diffusion plate 23 and a prism sheet 24 which are stacked in sequence. The prism sheet 24 is disposed on a side of the diffusion plate 23 away from the reflective layer 21 .

[0092] See also Figures 1 to 7 , Figure 5 is a structural schematic diagram of a second embodiment of a backlight assembly provided by the present application, Figure 6 is a structural schematic diagram of a third embodiment of a backlight assembly provided in the present application, Figure 7 It is a structural schematic diagram of the fourth embodiment of the backlight assembly provided in the present application.

[0093] In some embodiments, the surface of the reflective layer 21 away from the reflective surface 201 is surrounded to form a housing cavity 211, the backlight source 22 is disposed in the housing cavity 211, the reflective layer 21 supports the diffuser 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 source 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 diffusion plate 23 is used to evenly disperse the light, eliminate bright spots and dark spots, and prevent the display screen 10 from having uneven brightness.

[0095] The function of the prism sheet 24 is to refract and converge the light emitted by the backlight source 22 to reduce the loss of light.

[0096] In some specific embodiments, Figure 5 As shown, the surface of the reflective layer 21 away from the reflective surface 201 is surrounded to form a receiving cavity 211, the backlight source 22 is arranged in the receiving cavity 211, the reflective layer 21 supports the diffuser 23, and the surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect. The backlight source 22 is arranged in the receiving cavity 211 to reduce the thickness of the backlight assembly 20, and the light-emitting layer can also play a role in supporting the diffuser 23, simplifying the structure of the backlight assembly 20. The surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect, that is, the surface surrounding the receiving cavity 211 has a reflective effect, which can improve the utilization rate of the light emitted by the backlight source 22.

[0097] Exemplarily, the reflective layer 21 has a groove 213 on one side away from the reflective surface 201, and the space enclosed by the groove 213 forms a receiving cavity 211, and a plurality of backlight sources 22 are disposed in the groove 213. The inner wall surface of the groove 213 has a reflective function to reflect the side light of the backlight source 22. The groove 213 is a rectangular groove.

[0098] In the liquid crystal display mode, the backlight source 22 is turned on, and the forward light emitted by the backlight source 22 is evenly provided to the display screen 10 through the diffuser 23 and the prism sheet 24, while the side light emitted by the backlight source 22 is reflected to the diffuser 23 through the side wall of the accommodating cavity 211, and multiple light rays are re-gathered to reduce brightness loss.

[0099] In other specific embodiments, Figure 6 As shown, the surface of the reflective layer 21 away from the reflective surface 201 has a plurality of grooves 212, and the backlight source 22 is arranged corresponding to the grooves 212, and the surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect. That is, the side walls of the grooves 212 have a reflective effect, and the backlight source 22 is arranged in the grooves 212, which can reduce the scattering of light, improve the utilization rate of light, and also reduce the thickness of the backlight assembly 20.

[0100] Exemplarily, the side wall surface of the groove 212 is a curved surface. In the liquid crystal display mode, the backlight source 22 is turned on, and the forward light emitted by the backlight source 22 is uniformly provided to the display screen 10 through the diffuser 23 and the prism sheet 24, while the side light emitted by the backlight source 22 is reflected to the diffuser 23 through the side wall of the groove 212, and multiple light rays are re-gathered to reduce brightness loss.

[0101] In some other specific embodiments, Figure 7 As shown, the reflective surface 201 is a diffuse reflective surface 201 to prevent specular reflection.

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

[0103] Exemplarily, the side of the reflective layer 21 away from the backlight source 22 has a plurality of semicircular protrusions arranged at intervals to form a concave-convex surface, that is, the reflective surface 201 is a concave-convex surface.

[0104] In other embodiments, the reflective surface 201 may be other non-planar structures, and it is sufficient to ensure that the reflective surface 201 is a diffuse reflective surface 201. The groove 212 and the sink 213 may also be other shapes, which are not restricted here and can be selected according to actual needs.

[0105] In other embodiments, any two of the above specific embodiments may be combined to obtain arrangements of the reflective layer 21 and the backlight source 22 with different structures.

[0106] In this embodiment, if Figure 4 As shown, the surface of the reflective layer 21 away from the reflective surface 201 is surrounded to form a receiving cavity 211, and the surface of the reflective layer 21 away from the reflective surface 201 has a groove 212, and the backlight source 22 is disposed in the receiving cavity 211 and corresponding to the groove 212. The surface of the reflective layer 21 away from the reflective surface 201 has a reflective effect.

[0107] Specifically, the reflective layer 21 has a groove 213 on one side away from the reflective surface 201, and the groove 212 is disposed on the bottom wall of the groove 213. The space enclosed by the groove 213 and the groove 212 forms a receiving cavity 211, and the backlight source 22 is disposed in the groove 212. The inner wall surface of the groove 213 and the inner wall surface of the groove 212 both have a reflective effect to reflect the side light of the backlight source 22.

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

[0109] In other embodiments, the backlight source 22 may 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) electrically connected to the backlight source 22, and the control circuit layer is used to control the light emission of the backlight source 22. The structure and position of the control circuit layer are not limited here and can be selected according to actual needs.

[0112] See also Figures 1 to 8 , Figure 8 It is a schematic diagram of the display module provided in an embodiment of the present application switching from a liquid crystal display mode to an electronic paper display mode.

[0113] In some embodiments, the backlight assembly 20 is flippably disposed at the edge of the display screen 10. The backlight assembly 20 is connected to the edge of the display screen 10, and the backlight assembly 20 can be flipped 360 degrees, so that the backlight assembly 20 can be flipped to fit 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 fit 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 flipped and arranged at the edge of the display screen 10, which can not only switch freely between the liquid crystal display mode and the electronic paper display mode according to different usage scenarios and requirements, but also facilitates the thin and light 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, so as to facilitate 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 via a flexible substrate (not shown).

[0117] In other embodiments, the backlight assembly 20 is magnetically connected to the display screen 10. Magnetic elements (not shown) may be provided at the edge of the backlight assembly 20 and the edge of the display screen 10 to attach the backlight assembly 20 to the display screen 10 through magnetic attraction.

[0118] Compared with the related art, the display module 100 provided in the embodiment of the present application can switch to the electronic paper display mode in a well-lit environment, reducing the burden on the eyes and protecting eye health. Also, when high-brightness display is not required, it can be switched to the electronic paper display mode, thereby reducing power consumption and extending battery life. Secondly, the display module 100 provided in the embodiment of the present application can realize the 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 in the embodiment of the present application share the same display screen 10, which is conducive to reducing the thickness of the product.

[0119] Specifically, the embodiment of the present application can realize dual-mode switching between the liquid crystal display mode and the electronic paper display mode. Users can flexibly adjust according to different usage scenarios and needs. They can select the liquid crystal display mode in scenarios that require high color saturation and high video refresh rate, or select the electronic paper display mode in scenarios that require long-term text reading and eye health protection. This dual-mode free switching function enables the display module 100 provided in the embodiment of the present application to have both display effects and eye health protection effects, and has good compatibility.

[0120] See also Figures 1 to 9 , Fig. 9 It is a structural diagram of an embodiment of an electronic device provided in an embodiment of the present application.

[0121] An embodiment of the present application provides an electronic device 300 , which includes a display module 100 and a control module 200 .

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

[0123] The control module 200 is connected to the display module 100 and is used to control the display surface 101 of the display module 100 to display an image.

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

[0125] The electronic device 300 may also include one or more of the following components (not shown): memory, power supply component, processing component, multimedia component, audio component, input / output (I / O) interface, sensor component, and communication component. The specific structure and function of these components are the same or similar to the related art, and the details can be found in the related art, which will not be repeated here. The electronic device 300 can be a computer, a digital broadcast terminal, a message transceiver device, a game console, a medical device, a fitness device, a personal digital assistant, etc. This application does not limit this and is selected according to actual needs.

[0126] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0127] The above are only implementation methods of the present application, and are not intended to limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display module, characterized in that: include: A display screen having two display surfaces arranged opposite to each other, and the two display surfaces display in different display modes; A backlight assembly having a reflective surface and a light emitting surface arranged opposite to each other; The backlight assembly can be movably arranged on any of the display surfaces of the display screen, so that the light emitting surface is arranged toward one of the display surfaces, or the reflecting surface is arranged toward another of the display surfaces.

2. The display module according to claim 1, characterized in that: The display screen comprises a color array substrate and an opposite substrate which are arranged opposite to each other; a surface of the color array substrate facing away from the opposite substrate is a first display surface; a surface of the opposite substrate facing 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 a side of the reflective 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 reflective surface is arranged on a side of the light emitting surface close to the display screen, and the second display surface displays a picture.

3. The display module according to claim 2, characterized in that: The display screen further comprises a liquid crystal layer, and the liquid crystal layer is arranged between the color array substrate and the opposite substrate; the liquid crystal layer comprises cholesteric liquid crystal.

4. The display module according to claim 2, characterized in that: The color array substrate comprises a first substrate, a thin film transistor layer, a color filter and a pixel electrode layer which are stacked in sequence; The counter substrate includes a second substrate and a common electrode layer which are stacked in sequence.

5. The display module according to claim 1, characterized in that: The backlight assembly comprises a reflective layer and a backlight source, wherein the backlight source is arranged on one side of the reflective layer; and a surface of the reflective layer on a side away from the backlight source is the reflective surface.

6. The display module according to claim 5, characterized in that: The backlight assembly further comprises a diffusion plate and a prism sheet which are stacked in sequence, wherein the prism sheet is arranged on a side of the diffusion plate away from the reflective layer; The surface of the reflective layer away from the reflective surface is surrounded to form a containing cavity, the backlight source is arranged in the containing cavity, the reflective layer supports the diffuser plate, and the surface of the reflective layer away from the reflective surface has a reflective effect; and / or, The surface of the reflective layer away from the reflective surface has a plurality of grooves, the backlight source is arranged corresponding to the grooves, and the surface of the reflective layer away from the reflective surface has a reflective effect; and / or, The reflecting surface is a diffuse reflecting surface.

7. The display module according to claim 1, characterized in that: The backlight assembly is flippably arranged at the edge of the display screen.

8. The display module according to claim 7, characterized in that: The backlight assembly is hinged to the display screen; or, The backlight assembly is flexibly connected to the display screen.

9. The display module according to claim 1, characterized in that: The backlight assembly is magnetically connected to the display screen.

10. An electronic device, characterized in that: include: A display module, a display module as claimed in any one of claims 1 to 9; The control module is connected to the display module and is used to control the display surface of the display module to display an image.

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