Display module and display device

Abstract

The application discloses a display module and a display device. The display module comprises: a backlight module, a first display panel and a second display panel which are sequentially stacked along a first direction; wherein the first direction is along a vertical light-emitting direction of the display module, the backlight module at least comprises a light-emitting unit, a diffusion unit and a reflective brightening unit which are sequentially arranged along the first direction; the display module further comprises a light-enhancing unit and a light-adjusting unit; by arranging the light-enhancing unit and / or the light-adjusting unit in the first display panel, the overall thickness of the display module can be reduced, the manufacturing cost can be reduced, and the use effect of the display module can be ensured.

Description

TECHNICAL FIELD

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

[0002] With the development of display technology, most of the liquid crystal displays (LCD) on the market are backlight type liquid crystal displays, which include a liquid crystal panel and a backlight module. The display effect of the liquid crystal display screen with double-layer panel is high definition and super high contrast, which can match OLED. From the display effect, the number of contrast partitions is improved, the image display is clearer than the traditional single-layer liquid crystal display screen, there are more details, and the most natural and pure colors are restored. However, due to the large overall thickness of the liquid crystal display screen with double-layer panel, the transmittance is low, and a backlight module with high brightness is needed to ensure the display effect, but the preparation of the backlight module is difficult and challenging. SUMMARY

[0003] The present application provides a display module and a display device, which can reduce the overall thickness of the display module, reduce the preparation cost, and ensure the use effect of the display module.

[0004] According to an aspect of the present application, a display module is provided, comprising:

[0005] The backlight module, the first display panel and the second display panel are sequentially stacked along a first direction.

[0006] The backlight module comprises at least a light emitting unit, a diffusion unit and a reflective brightening unit which are sequentially arranged along the first direction.

[0007] The display module further comprises a light increasing unit and a light adjusting unit, and the light increasing unit and / or the light adjusting unit are arranged in the first display panel.

[0008] The first direction is a vertical light emitting direction of the display module.

[0009] According to another aspect of the present application, a display device is provided, comprising the display module of any one of the above aspects.

[0010] The technical scheme of the embodiment of the present application provides a display module, which comprises: a backlight module, a first display panel and a second display panel which are sequentially stacked along a first direction; the backlight module comprises a light-emitting unit, a diffusion unit and a reflective brightening unit which are sequentially arranged along the first direction; the display module further comprises a light-enhancing unit and a light-adjusting unit, and the light-enhancing unit and / or the light-adjusting unit are arranged in the first display panel; wherein the first direction is a vertical light-emitting direction of the display module. In the prior art, the light-enhancing unit or the light-adjusting unit in the backlight module is used to adjust the light-emitting angle of the light emitted by the light source in the backlight module, but the thickness of the backlight module is large, thereby affecting the overall thickness of the display module. By adjusting the position of the light-enhancing unit or the light-adjusting unit used for changing the light-emitting angle and improving the light-emitting at the normal viewing angle, the light-enhancing unit and / or the light-adjusting unit are arranged in the first display panel, the light-emitting angle of the light emitted by the backlight module is adjusted by the light-enhancing unit and / or the light-adjusting unit arranged in the first display panel, thereby making the light emitted after adjustment more concentrated, effectively improving the display brightness of the display module, reducing the thickness of the backlight module, thereby reducing the overall thickness of the display module, reducing the preparation cost of the backlight module, and ensuring the display effect of the display module.

[0011] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. 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 creative labor.

[0013] Figure 1 It is a structural schematic diagram of a display panel in the prior art;

[0014] Figure 2 It is a structural schematic diagram of a display module provided by the embodiment of the present application;

[0015] Figure 3 It is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0016] Figure 4 It is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0017] Figure 5 It is a structural schematic diagram of another display module provided by the embodiment of the present application;

[0018] Figure 6 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0019] Figure 7 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0020] Figure 8 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0021] Figure 9 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0022] Figure 10 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0023] Figure 11 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0024] Figure 12 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0025] Figure 13 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0026] Figure 14 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0027] Figure 15 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0028] Figure 16 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0029] Figure 17 Another structural schematic view of a display module provided by an embodiment of the present application is shown in FIG. 4B.

[0030] Figure 18 A structural schematic view of a display device provided by an embodiment of the present application is shown in FIG. 8. DETAILED DESCRIPTION

[0031] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application, so that those skilled in the art can better understand the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. 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 does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] Figure 1 A schematic structural diagram of a display panel in the prior art is shown in FIG. 1, along a vertical light-emitting direction x of the display panel, the display module 10 includes a backlight module 11, a first display panel 12 and a second display panel 13 arranged in sequence, along the vertical light-emitting direction of the display module 10, the backlight module 11 includes a light source, a diffusion sheet, a light enhancement film layer, a double brightness enhancement film layer and a light adjustment film layer arranged in sequence. Figure 1 However, the overall thickness of the existing backlight module 11 is relatively thick, and the preparation cost is relatively high. Since the display module 10 is a double-box design, the transmittance of the display module 10 is relatively low, and needs to be matched with a backlight module 11 with relatively high brightness. The existing backlight module 11 is difficult to ensure the display effect of the display module 10.

[0034] To solve the above technical problems, the embodiments of the present application provide a display module, which includes: a backlight module, a first display panel and a second display panel arranged in sequence along a first direction; the backlight module includes at least a light-emitting unit, a diffusion unit and a reflective brightness enhancement unit arranged in sequence along the first direction; the display module further includes a light enhancement unit and a light adjustment unit, the light enhancement unit and / or the light adjustment unit are arranged in the first display panel; wherein the first direction is a vertical light-emitting direction of the display module. By arranging the light enhancement unit and / or the light adjustment unit in the first display panel, the overall thickness of the display module can be reduced, the preparation cost can be reduced, and the use effect of the display module can be ensured.

[0035] The above is the core idea of the present application. The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Figure 2 A structural schematic diagram of a display module provided by an embodiment of the present application is shown in FIG. 1. Figure 3 A structural schematic diagram of a display module provided by an embodiment of the present application is shown in FIG. 1. Figure 4 A structural schematic diagram of a display module provided by an embodiment of the present application is shown in FIG. 1. Figure 2 Figure 3 Figure 4 As shown in FIG. 1, the display module 100 comprises: a backlight module 101, a first display panel 102 and a second display panel 103 which are sequentially stacked along a first direction X; the backlight module 101 at least comprises light-emitting units 104, diffusion units 105 and reflective brightening units 106 which are sequentially arranged along the first direction X; the display module 100 further comprises a light-enhancing unit 107 and a light-adjusting unit 108, the light-enhancing unit 107 and / or the light-adjusting unit 108 are arranged in the first display panel 102; wherein the first direction X is along the vertical light-emitting direction of the display module 100.

[0037] ​​The backlight module 101 is used to provide backlight, so that the light rays emitted by the backlight module 101 can be emitted from the first display panel 102 and the second display panel 103 in turn, thereby ensuring the display effect of the display module 100. The backlight module 101 at least includes a light emitting unit 104, a diffusion unit 105 and a reflective brightness enhancement unit 106. The light emitting unit 104 is a light source that provides light rays. The diffusion unit 105 can be a diffusion sheet that diffuses the light rays emitted by the light source through the diffusion unit 105, maintains the light emitting effect, and also plays a certain heat insulation role. The reflective brightness enhancement unit 106 can be a reflective polarizing sheet dual brightness enhancement film (DBF). For the light rays emitted by the backlight source, the light rays are decomposed into P and S polarized lights in two perpendicular directions. The P light can directly pass through the reflective brightness enhancement unit 106, and most of the S light is reflected back to the light emitting unit 104 through the reflective brightness enhancement unit 106. After passing through each layer of material in the light emitting unit 104, the S light is depolarized to become fully polarized light and then emitted again, thereby achieving a certain brightness enhancement effect. At the same time, the brightness is increased in all directions and in all viewing angles. Optionally, the first display panel 102 can be a monochrome liquid crystal display panel, and the second display panel 103 can be a color liquid crystal display panel. The first display panel 102 can only perform monochrome display of black or white. The second display panel 103 is provided with different color filter units of red, green and blue, so that the light rays passing through the first display panel 102 can realize color display after passing through the color filter units. By adjusting the deflection direction of the liquid crystal in the first display panel 102 and the backlight module 101, a zoned backlight emission effect can be realized. In combination with the second display panel 103, a pixel-level regional dimming effect can be realized, thereby ensuring the display effect of the display module 100. Since the thickness of the backlight module 101 in the existing display module 100 is relatively thick, the preparation is difficult and the preparation cost is high. In the present application, the light enhancement unit 107 and / or the light adjustment unit 108 originally located in the backlight module 101 are arranged in the first display panel 102, as shown in Figure 2 The light enhancement unit 107 can be arranged in the first display panel 102, or the light adjustment unit 108 can be arranged in the first display panel 102, as shown in Figure 3 The light enhancement unit 107 and the light adjustment unit 108 can be arranged in the first display panel 102, as shown in Figure 4 The light enhancement unit 107 and the light adjustment unit 108 can be arranged in the first display panel 102, as shown in Figure 2As shown, the light enhancement unit 107 is arranged in the first display panel 102, the film layer in the first display panel 102 can be multiplexed, the light enhancement unit 107 is formed on the surface of the insulating layer in the first display panel 102 away from the backlight module 101, the surface of the buffer layer away from the backlight module 101, the surface of the planarization layer away from the backlight module 101, or the surface of the passivation layer away from the backlight module 101, that is, the surface is patterned to form a patterned pattern, and the light angle of the emitted light is adjusted by the side wall of the patterned pattern, thereby ensuring that the light path of the divergent light emitted by the backlight module 101 is adjusted by the light enhancement unit 107 in the first display panel 102, the light at the normal viewing angle is increased, the overall thickness of the backlight module 101 is reduced, and the use effect of the backlight module 101 is ensured, and the normal display effect of the display module 100 is not affected.

[0038] In the embodiment of the application, at least one of the light enhancement unit and the light adjustment unit is arranged in the first display panel, so as to reduce the overall thickness of the backlight module, ensure the display effect of the display module, and not affect the light emission effect of the backlight module 101.

[0039] Optionally, Figure 5 Another structural schematic diagram of a display module provided by the embodiment of the application is shown in FIG. 6. Figure 5 As shown, the first display panel 102 includes a first substrate 109, a liquid crystal layer 110, and a second substrate 111 arranged in sequence; and the light adjustment unit 108 is formed in the second substrate 111.

[0040] The first display panel 102 includes a first substrate 109, a liquid crystal layer 110, and a second substrate 111 arranged in sequence; the first substrate 109 is an array substrate, a driving circuit layer is arranged in the array substrate, the second substrate 111 is a color film substrate, and a red-green-blue color filter unit is not arranged in the second substrate 111; an opening area 113 is arranged on the light shielding layer 112; the transmission rate of the light emitted by the backlight module 101 is affected by adjusting the deflection state of the liquid crystal molecules in the liquid crystal layer 110, so as to realize the display effect of black or white; the light adjustment unit 108 is formed in the second substrate 111, can be formed in an additional film layer introduced in the second substrate 111 or multiplexed with the film layer in the second substrate 111 to form the light adjustment unit 108, so as to realize the adjustment of the divergence angle of the light emitted by the backlight module 101; the angle of the light adjustment unit 108 can be selected according to actual design requirements, and the embodiment of the application is not limited in particular. Meanwhile, the light adjustment unit 108 is arranged in the second substrate 111, so as to effectively reduce the thickness of the backlight module 101 and reduce the preparation difficulty of the backlight module 101.

[0041] Optionally, continuing to refer to Figure 5The second substrate 111 is provided with a light shielding layer 112, the light shielding layer 112 is provided with an opening area 113, the light shielding layer 112 includes a first light shielding part 1121, the first light shielding part 1121 is arranged in at least part of the opening area 113, and the opening area 113 forms a plurality of openings 114, and the openings 114 are multiplexed as the light adjusting unit 108.

[0042] In the first display panel 102, the second substrate 111 is provided with the light shielding layer 112, the opening area 113 is arranged on the light shielding layer 112, the light transmission effect is ensured, and a plurality of openings 114 are arranged in the opening area 113, that is, part of the first light shielding part 1121 is reserved in the opening area 113 to form the plurality of openings 114 when the light shielding layer 112 is patterned. By means of the light transmission of the openings, the light adjusting unit 108 can be formed in the light shielding layer 112, part of the openings 114 is multiplexed to form the light adjusting unit 108 without affecting the display effect, the size or the cross-sectional shape of the opening 114 can be changed according to actual design requirements, and then the adjustment effect of the light is satisfied. For example, four openings 114 are arranged in the opening 114, the cross-sectional shape of the opening 114 is a rectangle, and the light adjusting unit 108 tends to be a normal viewing angle after the light adjusting unit 108. The light adjusting unit 108 can only multiplex part of the openings 114 in the opening area 113, that is, the light adjusting unit 108 is locally arranged to adjust the viewing angle of different display areas to meet different display requirements.

[0043] Optionally, Figure 6 Another structure schematic diagram of a display module provided by the embodiment of the present application is provided, Figure 7 Another structure schematic diagram of a display module provided by the embodiment of the present application is provided, as Figure 6 And Figure 7 As shown in the drawings, the cross-sectional shape of the opening 114 includes at least one of a rectangle, a parallelogram and a trapezoid in any plane perpendicular to the vertical light emitting direction of the display module 100.

[0044] For example, as shown in the drawings, the cross-sectional shape of the opening 114 is a rectangle; as shown in the drawings, the cross-sectional shape of the opening 114 is a parallelogram; as shown in the drawings, the cross-sectional shape of the opening 114 is a trapezoid. Figure 5 Figure 6 Figure 7 The opening 114 is multiplexed as the light adjusting unit 108, so that the light after the opening 114 is adjusted. Corresponding to different opening shapes and opening numbers, the light emitting amount and the light emitting direction of the light emitted from the first display panel 102 will be different. The shape and number of the opening 114 can be selected according to actual design requirements, and the embodiment of the present application is not limited.

[0045] Optionally,​​Figure 8 Another structural schematic diagram of a display module provided by an embodiment of the present application is shown in FIG. 2. Figure 8 As shown in FIG. 2, the first display panel 102 includes a first substrate 109, a liquid crystal layer 110, and a second substrate 111 stacked in sequence, and the light enhancement unit 107 is formed in the first substrate 109.

[0046] In the embodiment, the light enhancement unit 107 is formed in the first substrate 109, at least one film layer in the first substrate 109 is reused to form the light enhancement unit 107, the light enhancement unit 107 has an inclined side wall, i.e., an included angle with the first direction X, and when the outgoing light passes through the side wall of the light enhancement unit 107, the angle of the light emitted at a large angle can be adjusted, thereby increasing the light emission at the normal viewing angle. The inclination angle of the side wall of the light enhancement unit 107 can be selected according to actual design requirements, and the embodiment of the present application is not limited in particular. The light enhancement unit 107 can be formed in an additional film layer introduced in the first substrate 109 or the film layer in the first substrate 109 is reused, and the light enhancement unit 107 is arranged in the second substrate 111, which can effectively reduce the thickness of the backlight module 101 and reduce the difficulty of manufacturing the backlight module 101.

[0047] Optionally, continuing to refer to FIG. 2, Figure 8 As shown in FIG. 2, the first substrate 109 includes a plurality of insulating layers 115 on one side, and at least one insulating layer 115 is reused as the light enhancement unit 107 away from the surface of the side of the backlight module 101.

[0048] In the embodiment, the first substrate 109 is an array substrate, and the array substrate is usually provided with a thin film transistor 118, a common electrode 119, or a pixel electrode 130, i.e., the array substrate is provided with a metal material or a semiconductor material on one side, and therefore, the insulating layer 115 is usually used for protection and coverage to protect the array substrate and to play a certain planarization role, thereby facilitating the preparation of subsequent film layers. The material of the insulating layer 115 can include any one or any two or more of silicon oxide, silicon nitride, and silicon oxynitride, for example. At least one surface of the plurality of insulating layers 115 is patterned during the preparation process to form the light enhancement unit 107. The cross-sectional shape of the light enhancement unit 107 arranged on the surface of each layer of the plurality of insulating layers 115 can be the same or different, and the number of insulating layers in which the light enhancement unit 107 is arranged and the cross-sectional shape of the light enhancement unit 107 on the surface of each insulating layer 115 can be selected according to actual design requirements, and the embodiment of the present application is not limited in particular.

[0049] For example, as shown in FIG. 3, Figure 8The six inverted triangular shapes are only exemplary. The light enhancement unit 107 is formed on the surface of the insulating layer 115 covering the active layer 121 in the thin film transistor 118. Generally, the light enhancement unit 107 is formed on the entire surface to ensure the light enhancement effect, while avoiding the additional film layer. The reuse of the insulating layer 115 can effectively reduce the thickness of the backlight module 101, reduce the difficulty of manufacturing the backlight module 101, and ensure the light adjustment effect of the light enhancement unit 107.

[0050] Optionally, Figure 9 Another structure schematic diagram of a display module provided by an embodiment of the present application is shown in FIG. 6. As shown in FIG. 6, the insulating layer 115 includes an insulating planarization layer 116, the first substrate 109 is provided with a substrate 117 on one side, at least one thin film transistor 118 is located on one side of the substrate 117, and the insulating planarization layer 116 covers the thin film transistor 118. The surface of the insulating planarization layer 116 away from the backlight module 101 is reused as the light enhancement unit 107. Figure 9

[0051] The common electrode 119 and the pixel electrode 130 are both located on the same side of the first substrate 109, and the common electrode 119 and the pixel electrode 130 are insulatively arranged. The pixel electrode 130 is located on the side close to the liquid crystal molecules. The first substrate 109 is provided with the thin film transistor 118 on one side, and the thin film transistor 118 provides a driving signal for the pixel electrode 130. Under the joint action of the common electrode 119 and the pixel electrode 130, the liquid crystal molecules located between the first substrate 109 and the second substrate 111 deflect in the plane, thereby affecting the display effect of the first display panel 102. The insulating planarization layer 116 is arranged on the side away from the substrate 117 of the thin film transistor 118. The insulating planarization layer is usually composed of an organic material. On the premise of not affecting the display effect of the first display panel 102, the insulating planarization layer 116 covering the thin film transistor 118 is reused, that is, the surface of the insulating planarization layer 116 away from the substrate 117 is patterned. The surface of the insulating planarization layer 116 away from the backlight module 101 is reused as the light enhancement unit 107, so that the light emitted by the backlight module 101 produces a light enhancement effect after passing through the surface, thereby ensuring the display effect of the display module 100.

[0052] Optionally, continuing to refer to Figure 8 The first substrate 109 is provided with the substrate 117, the common electrode 119 and the first insulating layer 120 on one side of the substrate 117, and the first insulating layer 120 covers the common electrode 119. The surface of the first insulating layer 120 away from the backlight module 101 is reused as the light enhancement unit 107.

[0053] ​Wherein, on the side of the first substrate 109, there is a common electrode 119, the common electrode 119 is provided with a first insulating layer 120 away from the substrate 117, the first insulating layer 120 covers the common electrode 119, and the first insulating layer 120 plays a role of protecting the common electrode 119 while avoiding the common electrode 119 and the pixel electrode 130 from contacting. The surface of the first insulating layer 120 away from the substrate 117 is multiplexed, the surface is patterned to form the light enhancement unit 107, so that the light emitted by the backlight module 101 generates a light enhancement effect after passing through the surface, thereby ensuring the display effect of the display module 100.

[0054] Optionally, Figure 10 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, Figure 11 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, Figure 12 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, as Figure 10 、 Figure 11 and Figure 12 As shown in FIG. 1, the first substrate 109 is provided with a substrate 117, the side of the substrate 117 is provided with at least one thin film transistor 118, the thin film transistor 118 is located on the side of the common electrode 119 close to the substrate 117, and the thin film transistor 118 comprises an active layer 121, a second insulating layer 122, a gate 123, a third insulating layer 124 and a conductive electrode 125; the active layer 121 is located on the side of the substrate 117, the second insulating layer 122 covers the active layer 121, the gate 123 is located on the side of the second insulating layer 122 away from the substrate 117, the third insulating layer 124 covers the gate 123, and the conductive electrode 125 is connected with the active layer 121 through a via hole; at least one of the surface of the second insulating layer 122 away from the substrate 117 and the surface of the third insulating layer 124 away from the substrate 117 is multiplexed as the light enhancement unit 107.

[0055] Wherein, the first substrate 109 is provided with a plurality of thin film transistors 118 to provide driving signals for the pixel electrode 130, the thin film transistor 118 is usually provided with an active layer 121, a conductive electrode 125 and a gate 123, in order to ensure the normal driving effect of the thin film transistor 118, the second insulating layer 122 is arranged between the active layer 121 and the gate 123, and the third insulating layer 124 is arranged between the gate 123 and the insulating planarization layer 116. As shown in FIG. 2, the surface of the second insulating layer 122 away from the substrate 117 can be multiplexed to form the light enhancement unit 107; as shown in FIG. 3, the surface of the third insulating layer 124 away from the substrate 117 can be multiplexed to form the light enhancement unit 107; as shown in FIG. 4, the surface of the insulating planarization layer 116 away from the substrate 117 can be multiplexed to form the light enhancement unit 107. Figure 11 Figure 10 Figure 12 ​​As shown, the second insulating layer 122 and the third insulating layer 124 can be used to form light enhancement units 107 on the side surface away from the substrate 117, and the cross-sectional shapes of the light enhancement units 107 are the same, which ensures that the light emitted by the backlight module 101 is adjusted twice to ensure the light emission effect. Due to different use requirements of the display module 100, the light enhancement units 107 need to be adjusted differently, so the cross-sectional shapes of the light enhancement units 107 formed on the surfaces of the second insulating layer 122 and the third insulating layer 124 can be the same or different, which can achieve the light enhancement effect and avoid setting the light enhancement units 107 in the backlight module 101. At the same time, the film layers in the first display panel 102 are reused, which avoids setting additional film layers, reduces the thickness of the backlight module 101, and reduces the overall thickness of the display module 100, and ensures the display effect of the display module 100.

[0056] Optionally, Figure 13 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, Figure 14 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, as Figure 13 and Figure 14 As shown, the first substrate 109 is provided with a substrate 117 on one side, at least one thin film transistor 118 is provided on one side of the substrate 117, a buffer layer 126 is further provided on one side of the first substrate 109, the buffer layer 126 is located between the thin film transistor 118 and the substrate 117, and the surface of the buffer layer 126 away from the substrate 117 is reused as a light enhancement unit 107.

[0057] The buffer layer 126 is usually an inorganic insulating layer formed by chemical vapor deposition or atomic layer deposition, and the surface of the buffer layer 126 away from the substrate 117 can be subjected to patterning treatment to form a light enhancement unit 107, so that the light emitted by the backlight module 101 can be adjusted in time. For example, the cross-sectional shape of the light enhancement unit 107 is an isosceles triangle, so that the light at a large angle can be deflected by the side wall of the light enhancement unit 107, thereby adjusting the light at a large angle to be emitted at a normal viewing angle, increasing the light emission at the normal viewing angle, ensuring the light emission effect, and further ensuring the display effect of the subsequent display panel. As shown, Figure 14 As shown, the first insulating layer 122, the second insulating layer 122, the third insulating layer 124, and the buffer layer 126 are used to form light enhancement units 107 on the surfaces away from the substrate 117, which further improves the light enhancement effect and ensures the display effect of the display module 100.

[0058] Optionally, Figure 15 Another structural schematic diagram of a display module provided by an embodiment of the present application is provided, as Figure 15As shown, the brightening unit 107 includes a plurality of patterned structures 127; the shape of the patterned structure 127 includes at least one of a right-angled triangular pyramid, a regular triangular pyramid, a frustum, a truncated cone, and a cone.

[0059] The light enhancement unit 107 is composed of multiple patterned structures 127. The shape of the patterned structure 127 can be selected according to the actual light adjustment requirements. For example, the shape of the patterned structure 127 includes at least one of a right triangular pyramid, a regular triangular pyramid, a frustum, a pyramid, and a cone. In any plane perpendicular to the light emission direction of the display module 100, the cross-sectional shape of the patterned structure 127 can be a right triangle, an isosceles triangle, an equilateral triangle, an isosceles trapezoid, etc. The specific shape of the patterned structure 127 can be selected according to the actual design requirements. This embodiment of the invention does not impose specific limitations. Figure 15 The example is illustrated by using a right-angled triangle with an asymmetrical cross-sectional shape of the patterned structure 127, so that all emitted light rays are emitted in the same direction. In practical applications, when the display module 100 is used in a vehicle display, the position, number, and shape of the brightening unit 107 can be reasonably set to differentiate the design for the driver's seat and the passenger seat. By adjusting the brightening unit 107 in the display module 100 corresponding to the passenger seat to have an asymmetrical design, the light emission angle can be adjusted so that the passenger seat can see the display screen while the driver's seat cannot, thus ensuring safe driving.

[0060] Optional, Figure 16 This is a schematic diagram of another display module provided in an embodiment of the present invention, as shown below. Figure 16 As shown, the patterned structure 127 includes a plurality of groove structures 1271 or a plurality of protrusion structures 1272.

[0061] Among them, such as Figure 14 and Figure 15 As shown, the patterned structure 127 may include multiple groove structures 1271; or as... Figure 16 As shown, the patterned structure 127 may include multiple protruding structures 1272, each of which can adjust the light emission direction after passing through the sidewall of the groove structure 1271 or the sidewall of the protruding structure 1272, forming uniformly diffused light in all directions to ensure display effect. The light emitted from the backlight module 101, after passing through the patterned structure 127, focuses the originally wide-angle diffused light into a certain angle range, thereby increasing the brightness within a certain angle range and adjusting the light emission angle.

[0062] Optional, Figure 17 This is a schematic diagram of another display module provided in an embodiment of the present invention, as shown below. Figure 17As shown, the light-enhancing unit 107 at least includes a first light-enhancing unit 1071 and a second light-enhancing unit 1072 located in different film layers, and the shape of the first light-enhancing unit 1071 is different from that of the second light-enhancing unit 1072.

[0063] As shown, the light-enhancing unit 107 at least includes a first light-enhancing unit 1071 and a second light-enhancing unit 1072 located in different film layers, and the shape of the first light-enhancing unit 1071 is different from that of the second light-enhancing unit 1072.

[0064] Figure 18 As shown, the display device 200 includes the display module 100 described in the above embodiments. Figure 18 As shown, the display device 200 includes the display module 100 described in the above embodiments.

[0065] It should be noted that the display device provided in the embodiment has the same or corresponding beneficial effects as the display module 100 of the above embodiments, and thus will not be described here. The display device 200 provided in the embodiment can be a mobile phone as shown, or any electronic product with display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interaction terminal, etc., and the embodiment of the present application does not make special limitations on this. Figure 18

[0066] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.​

Claims

1. A display module, characterized in that, include: Along the first direction, a backlight module, a first display panel, and a second display panel are stacked sequentially. The backlight module includes at least a light-emitting unit, a diffusion unit, and a reflective brightness enhancement unit arranged sequentially along the first direction; The display module further includes a brightness enhancement unit and a light adjustment unit, which are disposed in the first display panel; Wherein, the first direction is the vertical light emission direction along the display module; The brightness enhancement unit includes at least a first brightness enhancement unit and a second brightness enhancement unit located in different film layers, wherein the shape of the first brightness enhancement unit is different from the shape of the second brightness enhancement unit; The first display panel includes a first substrate, a liquid crystal layer, and a second substrate that are stacked sequentially along the first direction; The light adjustment unit is formed within the second substrate; The second substrate has a light-shielding layer on one side, the light-shielding layer has an opening area, the light-shielding layer includes a first light-shielding portion, the first light-shielding portion is spaced apart in at least part of the opening area, the opening area forms a plurality of openings, and the openings are reused as the light adjustment unit. The brightness enhancement unit is formed within the first substrate.

2. The display module according to claim 1, characterized in that, The first substrate includes a plurality of insulating layers on one side, and at least one surface of the insulating layer away from the backlight module is reused as the brightness enhancement unit.

3. The display module according to claim 2, characterized in that, The insulating layer includes an insulating planarization layer, a substrate is disposed on one side of the first substrate, at least one thin-film transistor is located on one side of the substrate, and the insulating planarization layer covers the thin-film transistor. The surface of the insulating planarization layer away from the backlight module is reused as the brightness enhancement unit.

4. The display module according to claim 2, characterized in that, A substrate, a common electrode located on one side of the substrate, and a first insulating layer are disposed on one side of the first substrate, and the first insulating layer covers the common electrode; the surface of the first insulating layer away from the backlight module is reused as the brightness enhancement unit.

5. The display module according to claim 4, characterized in that, At least one thin-film transistor is disposed on one side of the substrate. The thin-film transistor is located on the side of the common electrode close to the substrate. The thin-film transistor includes: an active layer, a second insulating layer, a gate, a third insulating layer, and a conductive electrode. The active layer is located on one side of the substrate, the second insulating layer covers the active layer, the gate is located on the side of the second insulating layer away from the substrate, the third insulating layer covers the gate, and the conductive electrode is connected to the active layer through a via; At least one of the surfaces of the second insulating layer away from the substrate and the third insulating layer away from the substrate is reused as the brightening unit.

6. The display module according to claim 2, characterized in that, A substrate is disposed on one side of the first substrate, and at least one thin-film transistor is disposed on one side of the substrate. A buffer layer is also disposed on one side of the first substrate, and the buffer layer is located between the thin-film transistor and the substrate. The surface of the buffer layer away from the substrate is reused as the brightness enhancement unit.

7. The display module according to claim 1, characterized in that, The brightening unit includes multiple patterned structures; the shape of the patterned structure includes at least one of a right-angled triangular pyramid, a regular triangular pyramid, a frustum, a pyramid, and a cone.

8. The display module according to claim 7, characterized in that, The patterned structure includes multiple groove structures or multiple protrusion structures.

9. The display module according to claim 1, characterized in that, In any plane perpendicular to the light emission direction of the display module, the cross-sectional shape of the opening includes at least one of a rectangle, a parallelogram, and a trapezoid.

10. The display module according to claim 1, characterized in that, The first display panel is a monochrome display panel, and the second display panel is a color display panel.

11. A display device, characterized in that, The display module includes any one of claims 1-10.

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