Backlight module, display module, display method and display device thereof

Abstract

The present invention provides a backlight module, a display module, a display method and a display device thereof. The backlight module comprises: a back plate, a light bar, a light guide plate, a first optical film group and a second optical film group; the light emitting surface of the light bar is opposite to at least one side edge end surface of the light guide plate; the light guide plate, the first optical film group and the second optical film group are overlapped, and the light guide plate is located between the first optical film group and the second optical film group; the back plate comprises a first support part, a second support part and a third support part, and the first support part, the second support part and the third support part are connected in sequence; the first support part is used to form a covering and support for the edge of the first optical film group; the second support part is used to form a support for the light bar; the third support part is used to form a covering and support for the edge of the second optical film group. The overall thickness and cost of the backlight module are reduced.

Description

Technical Field

[0001] The present invention belongs to the field of display technology, and in particular relates to a backlight module, a display module, a display method and a display device. Background Art

[0002] With the continuous development of display technology, the application scenarios of display screens are also increasing. As a new display mode, double-sided screen display can play different display images on the front and back of the same display module, with a wide range of application scenarios and novel effects.

[0003] At present, the double-sided display / double-sided screen display is still in the innovative application stage in the market. Most of the sub-screens of double-sided display are only used to illuminate the brand logo of the terminal product or to realize simple animation display. These display applications still have a lot of room for optimization design in terms of thickness, light effect, display quality or other innovative applications. Summary of the invention

[0004] The present invention aims at the problems that the thickness, light effect, display quality and other application aspects of the above-mentioned double-sided display / double-sided screen display still need to be optimized, and provides a backlight module, a display module and a display method and a display device thereof. The backlight module does not need to be provided with a reflective sheet, a back plate bottom wall for supporting in the thickness direction of the backlight module, and an adhesive layer for fixing and connecting the two display module back plate bottom walls, thereby reducing the overall thickness and cost of the backlight module.

[0005] The present invention provides a backlight module, comprising: a back plate, a light bar, a light guide plate, a first optical film group and a second optical film group; the light emitting surface of the light bar is opposite to at least one side edge end surface of the light guide plate; the light guide plate, the first optical film group and the second optical film group are overlapped, and the light guide plate is located between the first optical film group and the second optical film group;

[0006] The back plate comprises a first supporting portion, a second supporting portion and a third supporting portion, wherein the first supporting portion, the second supporting portion and the third supporting portion are connected in sequence;

[0007] The first supporting portion is used to cover and support the edge of the first optical film group;

[0008] The second supporting portion is used to support the light bar;

[0009] The third supporting portion is used to cover and support the edge of the second optical film set.

[0010] Optionally, the cross-sectional shape of the first support portion perpendicular to the plate surface of the light guide plate is a first concave frame, the opening of the first concave frame faces the edge end surface of the first optical film set, and the edge of the first optical film set is located in the opening of the first concave frame;

[0011] The cross-sectional shape of the third supporting portion perpendicular to the plate surface of the light guide plate is a second concave frame, the opening of the second concave frame faces the edge end surface of the second optical film set, and the edge of the second optical film set is located in the opening of the second concave frame;

[0012] The cross-sectional shape of the second supporting portion perpendicular to the plate surface of the light guide plate is strip-shaped, one end of the strip is connected to the end of the opening of the first concave frame close to it, and the other end of the strip is connected to the end of the opening of the second concave frame close to it.

[0013] Optionally, the overall cross-sectional shape of the first supporting portion, the second supporting portion and the third supporting portion perpendicular to the plate surface of the light guide plate is a “bow” shape.

[0014] Optionally, the light bar includes a first light bar and a second light bar;

[0015] The light guide plate comprises a first light guide plate and a second light guide plate;

[0016] The light emitting surface of the first light bar faces the edge end surface of the first light guide plate; the light emitting surface of the second light bar faces the edge end surface of the second light guide plate;

[0017] The first light guide plate and the second light guide plate are stacked, the first light guide plate is in contact with the first optical film set; the second light guide plate is in contact with the second optical film set.

[0018] Optionally, a first mesh dot structure is arranged on the surface of the first light guide plate in contact with the second light guide plate, and the first mesh dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the surface of the first light guide plate in contact with the first optical film group, and a small part is emitted from the surface of the first light guide plate in contact with the second light guide plate;

[0019] A second grid dot structure is arranged on the surface of the second light guide plate in contact with the first light guide plate. The second grid dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the side of the second light guide plate in contact with the second optical film group, and a small part is emitted from the side of the second light guide plate in contact with the first light guide plate.

[0020] Optionally, a first dot structure is arranged on a surface of the light guide plate in contact with the first optical film set; a second dot structure is arranged on a surface of the light guide plate in contact with the second optical film set;

[0021] The first mesh dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the side of the light guide plate in contact with the second optical film set, and a small part is emitted from the side of the light guide plate in contact with the first optical film set;

[0022] The second mesh structure can cause diffuse reflection of the light irradiated thereon, with most of the light being emitted from the side of the light guide plate in contact with the first optical film set, and a small part being emitted from the side of the light guide plate in contact with the second optical film set.

[0023] An embodiment of the present invention further provides a display module, comprising the above-mentioned backlight module;

[0024] The display module also includes a first display panel and a second display panel;

[0025] The first display panel is located on a side of the first optical film group away from the light guide plate, and an edge of the first display panel is in contact with a side of the first support portion away from the first optical film group;

[0026] The second display panel is located at a side of the second optical film set away from the light guide plate, and an edge of the second display panel is in contact with a side of the third supporting portion away from the second optical film set.

[0027] Optionally, the display module further includes a peripheral circuit board;

[0028] The peripheral circuit board is located in a concave frame formed by the first supporting part, the second supporting part and the third supporting part in the “bow”-shaped cross section;

[0029] The peripheral circuit board is electrically connected to the first display panel and the second display panel respectively, and is used to provide driving signals and power signals to the first display panel and the second display panel.

[0030] Optionally, the display module further includes a first flexible circuit board and a second flexible circuit board;

[0031] A first binding area is provided at an edge of the first display panel; a second binding area is provided at an edge of the second display panel;

[0032] One end of the first flexible circuit board is bound and connected to the first binding area, and the other end is bound and connected to the peripheral circuit board; and the first flexible circuit board surrounds a side of the first supporting portion away from the edge end surface of the first optical film group;

[0033] One end of the second flexible circuit board is bound and connected to the second binding area, and the other end is bound and connected to the peripheral circuit board; and the second flexible circuit board surrounds a side of the third supporting portion away from the edge end surface of the second optical film group.

[0034] Optionally, the first binding area and the second binding area are respectively located at the same side edge of the first display panel and the second display panel.

[0035] Optionally, the peripheral circuit board includes one;

[0036] Alternatively, the peripheral circuit board includes two pieces;

[0037] The first flexible circuit board and the second flexible circuit board are bound and connected with the two peripheral circuit boards in a one-to-one correspondence.

[0038] Optionally, the orthographic projections of the display area of ​​the first display panel and the display area of ​​the second display panel on the surface of the light guide plate overlap.

[0039] An embodiment of the present invention further provides a display device, comprising the above-mentioned display module.

[0040] An embodiment of the present invention further provides a display method of the above display module, comprising: a backlight module provides backlight for a first display panel and a second display panel respectively;

[0041] The first display panel and the second display panel perform display respectively.

[0042] Beneficial effects of the present invention: In the backlight module provided by the present invention, the light emitted by the light strip can be irradiated to the first optical film group and the second optical film group respectively through the light guide plate, so as to provide display backlight for the two display panels in the double-sided display screen respectively, thereby realizing double-sided display of the double-sided display screen; relative to the currently disclosed double-sided display screen, the backlight module in the embodiment of the present invention can no longer be provided with a reflective sheet, a back panel bottom wall for supporting in the thickness direction of the backlight module, and an adhesive layer for fixing the bottom walls of the back panels of the two display modules, thereby reducing the overall thickness and cost of the backlight module.

[0043] The display module provided by the present invention, by adopting the above-mentioned backlight module, can provide backlight for the first display panel and the second display panel respectively and independently, thereby realizing double-sided display of the display module; at the same time, compared with the double-sided display screen in the current public technology, the overall thickness and cost of the display module adopting the backlight module in the above-mentioned embodiment are greatly reduced, the frame width is significantly reduced, and the light efficiency of the display module is significantly improved.

[0044] The display device provided by the present invention, by adopting the above-mentioned display module, not only enables the display device to achieve double-sided display, but also can reduce the overall thickness, cost and frame width of the display device, and can improve the light effect of the double-sided display of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic cross-sectional view of the structure of a double-sided display screen in the disclosed technology;

[0046] Figure 2 It is a schematic cross-sectional view of the structure of a backlight module in an embodiment of the present invention;

[0047] Figure 3 It is a schematic cross-sectional view of the structure of another backlight module in an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of the assembly process of the backlight module in an embodiment of the present invention;

[0049] Figure 5 It is a schematic cross-sectional view of the structure of a display module in an embodiment of the present invention;

[0050] Figure 6 It is a schematic diagram of binding a display panel and a peripheral circuit board in a display module according to an embodiment of the present invention.

[0051] The accompanying drawings are denoted as follows:

[0052] 1. back panel; 11. first support part; 12. second support part; 13. third support part; 2. light bar; 21. first light bar; 22. second light bar; 3. light guide plate; 31. first light guide plate; 32. second light guide plate; 4. first optical film group; 5. second optical film group; 6. first display panel; 61. first binding area; 7. second display panel; 71. second binding area; 8. array substrate; 9. color film substrate; 10. polarizer; 14. peripheral circuit board; 15. first flexible circuit board; 16. second flexible circuit board; 17. reflector; 18. optical film group; 19. display panel; 20. adhesive layer; 23. flexible circuit board. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solution of the present invention, a backlight module, a display module, a display method and a display device of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0054] At present, most of the double-sided display products are simply superimposed on two independent display modules, such as Figure 1 As shown; or, the light emitted from the hollow area on the back of the first display module is used to illuminate the second display module, such as a brand logo.

[0055] Figure 1 The double-sided screen display product in the embodiment is actually the superposition of two independent display modules in terms of thickness and cost. The two independent display modules respectively include a back plate 1, a reflective sheet 17, a light guide plate 3, an optical film group 18 and a display panel 19 arranged on the bottom wall of the back plate 1 in sequence. The bottom walls of the back plates 1 of the two independent display modules are bonded and fixed by an adhesive layer 20 to form a double-sided display screen; two sets of flexible circuit boards 23 are respectively provided for binding and connecting with the display panels in the display modules; two sets of peripheral circuit boards 14 are respectively provided for providing driving signals and power signals to the display panels 19 in the display modules; two sets of flexible circuit boards 23 respectively bind and connect the two display panels 19 with two sets of peripheral circuit boards 14. The peripheral circuit board 14 is located in the frame area outside the side wall of the back plate 1 of each display module. The double-sided display screen with two independent display modules simply superimposed also needs to consider the relative position fixation between the two display modules, which ultimately leads to an increase in the overall thickness and frame width of the double-sided display screen, and the integrity of the double-sided display screen is poor.

[0056] As for the solution of using the light emitted from the hollow area on the back of the first display module to illuminate the second display module, only a small range of display of the second display module can be achieved, and the optical quality and brightness are greatly reduced, and only simple display functions can be achieved.

[0057] In view of the problems existing in the above-mentioned double-sided screen display products, an embodiment of the present invention provides a backlight module, such as Figure 2 As shown, it includes: a back plate 1, a light bar 2, a light guide plate 3, a first optical film group 4 and a second optical film group 5; the light emitting surface of the light bar 2 is opposite to the edge end surface of at least one side of the light guide plate 3; the light guide plate 3, the first optical film group 4 and the second optical film group 5 are overlapped, and the light guide plate 3 is located between the first optical film group 4 and the second optical film group 5; the back plate 1 includes a first supporting portion 11, a second supporting portion 12 and a third supporting portion 13, and the first supporting portion 11, the second supporting portion 12 and the third supporting portion 13 are connected in sequence; the first supporting portion 11 is used to cover and support the edge of the first optical film group 4; the second supporting portion 12 is used to support the light bar 2; the third supporting portion 13 is used to cover and support the edge of the second optical film group 5.

[0058] The light bar 2 includes a substrate and a plurality of lamp beads arranged at equal intervals on the substrate and electrically connected to the wiring in the substrate. The light-emitting surface of the lamp beads faces the edge end surface of the light guide plate 3, that is, the backlight module is a side-entry backlight. The light emitted by the light bar 2 can be irradiated to the first optical film group 4 and the second optical film group 5 through the light guide plate 3, so as to provide display backlight for the two display panels in the double-sided display screen, thereby realizing double-sided display of the double-sided display screen. Figure 1 In the double-sided display screen, the backlight module in this embodiment no longer needs to be provided with a reflective sheet, a back panel bottom wall for supporting in the thickness direction of the backlight module, and an adhesive layer for fixing and connecting the two display module back panel bottom walls, thereby reducing the overall thickness and cost of the backlight module.

[0059] Optionally, in this embodiment, the cross-sectional shape of the first support portion 11 perpendicular to the plate surface of the light guide plate 3 is a first concave frame, the opening of the first concave frame faces the edge end surface of the first optical film group 4, and the edge of the first optical film group 4 is located in the opening of the first concave frame; the cross-sectional shape of the third support portion 13 perpendicular to the plate surface of the light guide plate 3 is a second concave frame, the opening of the second concave frame faces the edge end surface of the second optical film group 5, and the edge of the second optical film group 5 is located in the opening of the second concave frame; the cross-sectional shape of the second support portion 12 perpendicular to the plate surface of the light guide plate 3 is a strip, one end of the strip is connected to one end of the opening of the first concave frame close to it, and the other end of the strip is connected to one end of the opening of the second concave frame close to it.

[0060] The back plate 1 is made of shading material. The above arrangement can block the light from the edge of the first optical film group 4 by the first concave frame, and block the light from the edge of the second optical film group 5 by the second concave frame, thereby preventing light leakage from the edges of the first optical film group 4 and the second optical film group 5.

[0061] Optionally, in this embodiment, the overall cross-sectional shape of the first supporting portion 11, the second supporting portion 12 and the third supporting portion 13 perpendicular to the plate surface of the light guide plate 3 is a "bow" shape. That is, as long as the back plate 1 can cover the edge end surfaces of the first optical film group 4, the second optical film group 5 and the light guide plate 3 and support the edges of the first optical film group 4 and the second optical film group 5, the back plate 1 can fix and support other structural film layers in the backlight module without the need to set a back plate bottom wall.

[0062] Optionally, in this embodiment, the light bar 2 includes a first light bar 21 and a second light bar 22; the light guide plate 3 includes a first light guide plate 31 and a second light guide plate 32; the light emitting surface of the first light bar 21 faces the edge end surface of the first light guide plate 31; the light emitting surface of the second light bar 22 faces the edge end surface of the second light guide plate 32; the first light guide plate 31 and the second light guide plate 32 are stacked, the first light guide plate 31 is in contact with the first optical film group 4; the second light guide plate 32 is in contact with the second optical film group 5. Among them, the first light bar 21, the first light guide plate 31 and the first optical film group 4 are used to provide backlight for one of the display panels of the double-sided display screen; the second light bar 22, the second light guide plate 32 and the second optical film group 5 are used to provide backlight for the other display panel of the double-sided display screen, thereby realizing double-sided display of the double-sided display screen.

[0063] Optionally, in this embodiment, a first grid dot structure is provided on the surface of the first light guide plate 31 that contacts the second light guide plate 32, and the first grid dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the surface of the first light guide plate 31 that contacts the first optical film group 4, and a small part is emitted from the surface of the first light guide plate 31 that contacts the second light guide plate 32; a second grid dot structure is provided on the surface of the second light guide plate 32 that contacts the first light guide plate 31, and the second grid dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the surface of the second light guide plate 32 that contacts the second optical film group 5, and a small part is emitted from the surface of the second light guide plate 32 that contacts the first light guide plate 31. Among them, the setting of the first grid dot structure can make most of the light irradiated thereon be reflected back into the first light guide plate 31, and a small part of the light is transmitted into the second light guide plate 32; the setting of the second grid dot structure can make most of the light irradiated thereon be reflected back into the second light guide plate 32, and a small part of the light is transmitted into the first light guide plate 31, thereby realizing the light complementarity between the first light guide plate 31 and the second light guide plate 32, and then obtaining the optical complementary effect of providing backlight for the double-sided display screen, thereby improving the display light efficiency of the double-sided display screen.

[0064] Alternatively, if Figure 3As shown, the light guide plate 3 can also be set as one piece, and the first mesh dot structure is set on the side of the light guide plate 3 that contacts the first optical film group 4; the second mesh dot structure is set on the side of the light guide plate 3 that contacts the second optical film group 5; the first mesh dot structure can make the light irradiated thereon diffusely reflected and most of it is emitted from the side of the light guide plate 3 that contacts the second optical film group 5, and a small part is emitted from the side of the light guide plate 3 that contacts the first optical film group 4; the second mesh dot structure can make the light irradiated thereon diffusely reflected and most of it is emitted from the side of the light guide plate 3 that contacts the first optical film group 4, and a small part is emitted from the side of the light guide plate 3 that contacts the second optical film group 5. In this way, by setting a light guide plate 3 in the backlight module, double-sided display of the double-sided display screen can also be achieved.

[0065] It should be noted that when the light guide plate 3 is provided in one piece, only one light bar 2 may be provided. Of course, multiple light bars 2 may also be provided, as long as the light emitting surface of the light bar 2 faces the edge end surface of the light guide plate 3.

[0066] Based on the above structural arrangement of the backlight module, this embodiment further provides an assembly method of the backlight module. Figure 2 Taking the backlight module of the structure as an example, the assembling method of the backlight module includes: Figure 4 shown.

[0067] First, the substrate side of the light bar 2 is attached to the side wall of the second support portion 12, with the light emitting surface of the lamp beads of the light bar 2 facing the side of the substrate away from the second support portion 12;

[0068] Next, align and assemble the light guide plate 3 and the light bar 2; make the light emitting surface of the first light bar 21 face the edge end surface of the first light guide plate 31; make the light emitting surface of the second light bar 22 face the edge end surface of the second light guide plate 32;

[0069] Then, the first optical film set 4 and the second optical film set 5 are aligned and assembled so that the edge of the first optical film set 4 is located in the opening of the first concave frame; the edge of the second optical film set 5 is located in the opening of the second concave frame.

[0070] In the backlight module, light from the light strip can be irradiated to the first optical film group and the second optical film group respectively through the light guide plate, so as to provide display backlight for the two display panels in the double-sided display screen respectively, thereby realizing double-sided display of the double-sided display screen; compared with the currently disclosed double-sided display screen, the backlight module in the embodiment of the present invention can no longer be provided with a reflective sheet, a back panel bottom wall for supporting in the thickness direction of the backlight module, and an adhesive layer for fixing the bottom walls of the back panels of the two display modules, thereby reducing the overall thickness and cost of the backlight module.

[0071] The embodiment of the present invention further provides a display module, such as Figure 5 As shown, it includes the backlight module in the above embodiment; the display module also includes a first display panel 6 and a second display panel 7; the first display panel 6 is located on the side of the first optical film group 4 away from the light guide plate 3, and the edge of the first display panel 6 is in contact with the side of the first supporting portion 11 away from the first optical film group 4; the second display panel 7 is located on the side of the second optical film group 5 away from the light guide plate 3, and the edge of the second display panel 7 is in contact with the side of the third supporting portion 13 away from the second optical film group 5.

[0072] The first support portion 11 can support the edge of the first display panel 6, and the third support portion 13 can support the edge of the second display panel 7. By using the backlight module in the above embodiment, the integrity of the display module can be improved, and the overall assembly strength of the display module can be improved.

[0073] In this embodiment, the first display panel 6 and the second display panel 7 have the same structure, and respectively include an array substrate 8 and a color filter substrate 9 arranged in a box, a liquid crystal filled in the gap between the array substrate 8 and the color filter substrate 9, a polarizer 10 arranged on the side of the array substrate 8 away from the color filter substrate 9, and a polarizer 10 arranged on the side of the color filter substrate 9 away from the array substrate 8. The structure of the array substrate 8 and the color filter substrate 9 is a traditional structure and will not be repeated here. By providing backlight for the first display panel 6 and the second display panel 7 through the backlight module in the above embodiment, double-sided display of the display module can be achieved; at the same time, compared with the double-sided display screen in the current public technology, the overall thickness and cost of the display module using the backlight module in the above embodiment are greatly reduced, and the light efficiency of the display module is significantly improved.

[0074] Optionally, in this embodiment, the display module further includes a peripheral circuit board 14; the peripheral circuit board 14 is located in a concave frame formed by the first support portion 11, the second support portion 12 and the third support portion 13 in the "bow"-shaped cross section; the peripheral circuit board 14 is electrically connected to the first display panel 6 and the second display panel 7, respectively, and is used to provide driving signals and power signals to the first display panel 6 and the second display panel 7. Figure 1 The setting position of the peripheral circuit board in the double-sided display screen, in this embodiment, the setting position of the peripheral circuit board 14 is Figure 1 The area outside the side wall of the middle back plate is transferred to the concave frame of the "bow"-shaped cross section of the back plate 1 in this embodiment, thereby greatly reducing the frame width of the display module.

[0075] Among them, only one peripheral circuit board 14 is provided. By binding the first display panel 6 and the second display panel 7 to the same peripheral circuit board 14, the peripheral circuit board 14 can drive and power the first display panel 6 and the second display panel 7 respectively, so that the display module can achieve double-sided display. Figure 1 The double-sided display screen can be equipped with one less peripheral circuit board 14, thereby further reducing the cost of the display module.

[0076] Optionally, in this embodiment, if Figure 6 As shown, the display module further includes a first flexible circuit board 15 and a second flexible circuit board 16; a first binding area 61 is provided at the edge of the first display panel 6; a second binding area 71 is provided at the edge of the second display panel 7; one end of the first flexible circuit board 15 is bound and connected to the first binding area 61, and the other end is bound and connected to the peripheral circuit board 14; and the first flexible circuit board 15 is surrounded by the side of the first support portion 11 away from the edge end face of the first optical film group 4; one end of the second flexible circuit board 16 is bound and connected to the second binding area 71, and the other end is bound and connected to the peripheral circuit board 14; and the second flexible circuit board 16 is surrounded by the side of the third support portion 13 away from the edge end face of the second optical film group 5. The distribution positions of the first flexible circuit board 15 and the second flexible circuit board 16 are conducive to further reducing the border width of the display module.

[0077] The first binding area 61 is located at an edge area of ​​the array substrate 8 in the first display panel 6; the second binding area 71 is located at an edge area of ​​the array substrate 8 in the second display panel 7. The first binding area 61 is bound and connected with the peripheral circuit board 14 through the first flexible circuit board 15, so that the peripheral circuit board 14 can provide the first display panel 6 with a driving signal and a power signal; the second binding area 71 is bound and connected with the peripheral circuit board 14 through the second flexible circuit board 16, so that the peripheral circuit board 14 can provide the second display panel 7 with a driving signal and a power signal; thereby realizing double-sided display of the display module.

[0078] Optionally, in this embodiment, the first binding area 61 and the second binding area 71 are respectively located at the same side edge of the first display panel 6 and the second display panel 7. Such a configuration can reduce the border width of the side edge where the binding area of ​​the display module is set; at the same time, the other side edges of the display module can also achieve ultra-narrow borders or no borders.

[0079] Optionally, in this embodiment, two peripheral circuit boards 14 can be provided; the first flexible circuit board 15 and the second flexible circuit board 16 are bound and connected to the two peripheral circuit boards 14 one by one. Since the two peripheral circuit boards 14 can be both provided in the concave frame of the "bow"-shaped cross section of the back plate 1, the frame width of the display module can also be made smaller than that of the back plate 1. Figure 1The double-sided display in the is greatly reduced.

[0080] Optionally, in this embodiment, the display area of ​​the first display panel 6 and the display area of ​​the second display panel 7 are overlapped in their orthographic projection on the plate surface of the light guide plate 3. That is, the display areas of the first display panel 6 and the second display panel 7 are the same in size. Since the backlight module in the above embodiment can improve the display light effect of the first display panel 6 and the second display panel 7, the display areas of the first display panel 6 and the second display panel 7 can be designed to be the same in size, thereby better realizing the double-sided display of the display module.

[0081] Based on the above structure of the display module, this embodiment further provides a display method of the display module, including: the backlight module provides backlight for the first display panel and the second display panel respectively; the first display panel and the second display panel perform display respectively.

[0082] Among them, the first display panel and the second display panel can display independently, and the displays of the two do not interfere with each other, that is, different display images can be played on the front and back sides of the same display module, which has a wide range of application scenarios and novel effects.

[0083] The display module provided in this embodiment can provide backlight for the first display panel and the second display panel independently by adopting the backlight module in the above embodiment, thereby realizing double-sided display of the display module; at the same time, compared with the double-sided display screen in the current public technology, the overall thickness and cost of the display module adopting the backlight module in the above embodiment are greatly reduced, the frame width is significantly reduced, and the light efficiency of the display module is significantly improved.

[0084] An embodiment of the present invention further provides a display device, comprising the display module in the above embodiment.

[0085] By adopting the display module in the above embodiment, not only can the display device achieve double-sided display, but also the overall thickness, cost and frame width of the display device can be reduced, and the light effect of the double-sided display of the display device can be improved.

[0086] The display device provided by the present invention can be any product or component with a display function, such as an LCD panel, an LCD television, a display, a mobile phone, a navigator, etc.

[0087] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display module, comprising a backlight module, The backlight module include: Back panel, light bar, light guide plate, first optical film group and second optical film group; The light emitting surface of the light bar is opposite to at least one side edge end surface of the light guide plate; the light guide plate, the first optical film group and the second optical film group are stacked, and the light guide plate is located between the first optical film group and the second optical film group; The back plate is made of light-shielding material; Characterized in that the back plate comprises a first supporting portion, a second supporting portion and a third supporting portion, and the first supporting portion, the second supporting portion and the third supporting portion are connected in sequence; The first supporting portion is used to cover and support the edge of the first optical film group; The second supporting portion is used to support the light bar; The third supporting portion is used to cover and support the edge of the second optical film group; The cross-sectional shape of the first support portion perpendicular to the plate surface of the light guide plate is a first concave frame, the opening of the first concave frame faces the edge end surface of the first optical film set, and the edge of the first optical film set is located in the opening of the first concave frame; The cross-sectional shape of the third supporting portion perpendicular to the plate surface of the light guide plate is a second concave frame, the opening of the second concave frame faces the edge end surface of the second optical film set, and the edge of the second optical film set is located in the opening of the second concave frame; The cross-sectional shape of the second supporting portion perpendicular to the plate surface of the light guide plate is a strip, one end of the strip is connected to the end of the opening of the first concave frame close to it, and the other end of the strip is connected to the end of the opening of the second concave frame close to it; The overall cross-sectional shape of the first supporting portion, the second supporting portion and the third supporting portion perpendicular to the plate surface of the light guide plate is a "bow" shape; The display module also includes a peripheral circuit board; The peripheral circuit board is located in a concave frame formed by the first supporting part, the second supporting part and the third supporting part in the "bow"-shaped cross section.

2. The display module according to claim 1, It is characterized in that The light bar comprises a first light bar and a second light bar; The light guide plate comprises a first light guide plate and a second light guide plate; The light emitting surface of the first light bar faces the edge end surface of the first light guide plate; the light emitting surface of the second light bar faces the edge end surface of the second light guide plate; The first light guide plate and the second light guide plate are stacked, and the first light guide plate is in contact with the first optical film set; The second light guide plate is in contact with the second optical film set.

3. The display module according to claim 2, It is characterized in that A first mesh dot structure is arranged on the surface of the first light guide plate in contact with the second light guide plate, and the first mesh dot structure can make the light irradiated thereon be diffusely reflected and most of the light is emitted from the surface of the first light guide plate in contact with the first optical film group, and a small part is emitted from the surface of the first light guide plate in contact with the second light guide plate; A second grid dot structure is arranged on the surface of the second light guide plate in contact with the first light guide plate. The second grid dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the side of the second light guide plate in contact with the second optical film group, and a small part is emitted from the side of the second light guide plate in contact with the first light guide plate.

4. The display module according to claim 1, It is characterized in that A first dot structure is arranged on a surface of the light guide plate in contact with the first optical film set; a second dot structure is arranged on a surface of the light guide plate in contact with the second optical film set; The first mesh dot structure can cause the light irradiated thereon to be diffusely reflected and most of the light is emitted from the side of the light guide plate in contact with the second optical film set, and a small part is emitted from the side of the light guide plate in contact with the first optical film set; The second mesh structure can cause diffuse reflection of the light irradiated thereon, with most of the light being emitted from the side of the light guide plate in contact with the first optical film set, and a small part being emitted from the side of the light guide plate in contact with the second optical film set.

5. The display module according to any one of claims 1 to 4, It is characterized in that The display module also includes a first display panel and a second display panel; The first display panel is located on a side of the first optical film group away from the light guide plate, and an edge of the first display panel is in contact with a side of the first support portion away from the first optical film group; The second display panel is located at a side of the second optical film set away from the light guide plate, and an edge of the second display panel is in contact with a side of the third supporting portion away from the second optical film set.

6. The display module according to claim 5, It is characterized in that The peripheral circuit board is electrically connected to the first display panel and the second display panel respectively, and is used to provide driving signals and power signals to the first display panel and the second display panel.

7. The display module according to claim 6, It is characterized in that The display module also includes a first flexible circuit board and a second flexible circuit board; A first binding area is provided at an edge of the first display panel; a second binding area is provided at an edge of the second display panel; One end of the first flexible circuit board is bound and connected to the first binding area, and the other end is bound and connected to the peripheral circuit board; and the first flexible circuit board surrounds a side of the first supporting portion away from the edge end surface of the first optical film group; One end of the second flexible circuit board is bound and connected to the second binding area, and the other end is bound and connected to the peripheral circuit board; and the second flexible circuit board surrounds a side of the third supporting portion away from the edge end surface of the second optical film group.

8. The display module according to claim 7, It is characterized in that The first binding area and the second binding area are respectively located at the same side edge of the first display panel and the second display panel.

9. The display module according to claim 7, It is characterized in that The peripheral circuit board includes one; Alternatively, the peripheral circuit board includes two pieces; The first flexible circuit board and the second flexible circuit board are bound and connected with the two peripheral circuit boards in a one-to-one correspondence.

10. The display module according to claim 5, It is characterized in that The orthographic projections of the display area of ​​the first display panel and the display area of ​​the second display panel on the surface of the light guide plate overlap.

11. A display device, It is characterized in that A display module comprising any one of claims 1-10.

12. A display method of the display module according to any one of claims 5 to 10, It is characterized in that include: The backlight module provides backlight for the first display panel and the second display panel respectively; The first display panel and the second display panel perform display respectively.

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