Double-layer energized backlight source

Abstract

The invention relates to the technical field of backlight modules, in particular to a double-layer electrified backlight source which comprises a lower frame and an upper frame, a flexible rubber mat is arranged on the upper frame, a light-transmitting part is arranged at the lower end of the flexible rubber mat and comprises multiple layers of membranes distributed on the upper side and a light guide plate distributed on the lower side, and the light guide plate can be attached to the multiple layers of membranes. Insertion grooves are formed between the lower frame and the upper frame, insertion frames are inserted between the insertion grooves attached to each other, lower insertion plates and upper insertion plates are connected into the lower frame and the upper frame respectively, the lower insertion plates and the upper insertion plates are in bilateral symmetry and can make contact with the inclined ends of the insertion frames, a backlight plate abuts against the lower frame, and the backlight plate can abut against the two lower insertion plates which are in bilateral symmetry. The sliding type upper insertion plate and the press-fit type light guide plate are adopted, rigid press fit in a threaded connection or glue bonding mode is replaced with local flexible contact, concentrated stress on the edge of a diaphragm during disassembly and assembly is dispersed, and creases caused by mechanical extrusion are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of backlight modules, in particular to a double-layer energized backlight source. Background Art

[0002] The backlight is a light source located behind the LCD display. The LCD display itself does not emit light. The graphics it displays are the result of its modulation of light. The performance of the backlight will not only directly affect the visual effect of the LCD display module, but the cost of the backlight accounts for 3-5% of the display module, but the electricity consumed accounts for 75% of the entire module.

[0003] The optical film in the backlight module is affected by its material and size, and is prone to bulge during operation, which in turn causes wrinkles or damage to the optical film during disassembly and maintenance, affecting its service life. How to reduce the energy consumption of the backlight source is one of the current work points. If the existing backlight source design of the LCD screen is adopted, the backlight source must be turned on at full screen when performing partial display, which will cause unnecessary energy consumption and is not energy-saving and environmentally friendly to use. Summary of the invention

[0004] The object of the present invention is to provide a double-layer energized backlight source to overcome the above-mentioned defects in the prior art.

[0005] The light guide plate is a light-transmitting portion that is symmetrical and slidable in the middle. The upper plug-in plate can contact the inclined end on the plug-in frame, and the lower plug-in plate and the upper plug-in plate are both arranged in an L shape, and the L-shaped horizontally extending end of the lower plug-in plate located below is longer than the upper plug-in plate, and a boss is fixedly provided on the hollow part at the middle end of the lower frame, and the boss is protruded upward, and a backlight plate is abutted on the upper end surface of the boss, and the backlight plate can abut against two of the lower plug-in plates symmetrically on the left and right, and the upper end surface of the boss and the upper end surface of the horizontally extending end of the lower plug-in plate are in the same plane, and LED lamp beads are evenly distributed on the upper end of the backlight plate, and a groove is provided on the boss, and sliding grooves are provided at the left and right ends of the lower frame, and the lower plug-in plate is slidably arranged on the sliding groove left and right, and the lower side of the groove is connected to a plug-in groove expanding outward, and a horizontal light source is clamped in the plug-in groove, and the horizontal light source is composed of an elastic outer frame and LED lamp beads evenly distributed at the inner end of the outer frame.

[0006] The lockhole that is formed on the two ends of the sliding panel also is provided with a circle, and the two ends of the sliding panel are connected with each other with a circle, and the two ends of the sliding panel are connected with a circle.

[0007] Furthermore, a circumferentially arranged connecting groove is provided at the lower end of the flexible rubber pad, a photodiode film is fixedly provided on the connecting groove, and the left end of the photodiode film is connected to two wires that pass through the upper frame, a through cavity is provided on the backlight panel, and the through cavity can be connected to the groove, and the groove has the same size as the through cavity, and the front and rear ends of the backlight panel, the light guide plate and the multilayer film can respectively abut against the inner end surfaces of the lower frame and the upper frame, and the bottom end of the lower frame is fixed with evenly distributed plug strips, and a cavity is provided between two adjacent plug strips to form a plug slot for plug-in matching.

[0008] The beneficial effects of the present invention are:

[0009] The horizontal light source located at the lower layer and the backlight panel located at the upper layer are set up separately to work, so that it can be suitable for electronic devices that are in standby mode for a long time. By turning on the horizontal light source and turning off the LED lamp beads on the backlight panel, local lighting of the LCD screen can be achieved, effectively reducing energy consumption, and being more energy-saving and environmentally friendly.

[0010] By bonding the multi-layer membrane underside with a light guide plate, it can be naturally bonded to a flexible rubber pad, reducing the internal stress when laid flat. When the upper frame is inverted, it can effectively ensure that the multi-layer membrane will not be easily wrinkled, torn or damaged. By using a sliding upper plug-in plate and a pressed light guide plate, local flexible contact replaces the rigid pressing of threaded connection or glue bonding, which disperses the concentrated stress on the edge of the membrane, reduces creases caused by mechanical extrusion, supports repeated disassembly and assembly without obvious damage, and extends the service life of the membrane.

[0011] The sliding rod is plugged into and matched with the lower frame and the upper frame. After the lower frame and the upper frame are attached, the sliding rod and the plug-in bracket limit the upper and lower separation of the lower frame, so that the lower frame and the upper frame can be disassembled and assembled more conveniently, thereby further improving the convenience of later maintenance and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0013] Figure 2 It is a schematic diagram of the appearance of the present invention;

[0014] Figure 3 It is a schematic diagram of the appearance of the lower frame of the present invention;

[0015] Figure 4 It is a schematic diagram of the appearance of the lower frame of the present invention;

[0016] Figure 5 It is a schematic diagram of the longitudinal section structure of the present invention;

[0017] Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention;

[0018] Figure 7 The present invention Figure 6 The enlarged schematic diagram of point A in the middle;

[0019] Figure 8 The present invention Figure 1 Schematic diagram of the appearance after removing the light-transmitting part;

[0020] Fig. 9 The present invention Figure 1 A partial cross-sectional schematic diagram of the control mechanism;

[0021] Fig.10 This is a partial enlarged schematic diagram of the control mechanism of the present invention.

[0022] In the figure:

[0023] 10. Lower frame; 11. Upper frame; 12. Flexible rubber pad; 13. Translucent part; 14. Boss; 15. Slide groove; 16. Recess; 17. Plug-in groove; 18. Horizontal light source; 19. Reflector; 20. Slot; 21. Plug-in rack; 22. Inclined end; 23. Backlight plate; 24. Lower plug-in plate; 25. Light guide plate; 26. Upper plug-in plate; 27. Multilayer film; 28. Connecting groove; 29. ​​Photodiode film; 30. Wire; 31. Through cavity; 32. LED lamp bead; 33. Control mechanism; 34. Plug-in rod; 35. Slide cavity; 36. Connecting cavity; 37. Slide rod; 38. Connecting plate; 39. Push spring; 40. Abutment plate; 41. Plug-in strip; 42. Through groove; 43. Inclined surface. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1:

[0026] Reference Figure 1-Figure 10A double-layer energized backlight source according to an embodiment of the present invention comprises a lower frame 10, an upper frame 11 is plugged into the upper end of the lower frame 10, a flexible rubber pad 12 is fixedly arranged at the inner end portion of the upper side of the upper frame 11, a light-transmitting portion 13 is arranged at the lower end of the flexible rubber pad 12, the light-transmitting portion 13 comprises a multi-layer film 27 distributed on the upper side and a light guide plate 25 distributed on the lower side, the light guide plate 25 can be attached to the multi-layer film 27, and the multi-layer film 27 is divided into a diffusion film arranged in an upper and lower double layer and a prism film located in the middle, The ends of the lower frame 10 and the upper frame 11 that fit each other are provided with slots 20, and a plug-in frame 21 is inserted between the slots 20 that fit each other. The plug-in frame 21 is arranged in a cross shape as a whole, and inclined ends 22 are arranged at the upper and lower ends of the plug-in frame 21. The inclined direction of the inclined end 22 is arranged close to the light guide plate 25. The slot 20 can be connected to the middle hollow part of the lower frame 10 and the upper frame 11. Two lower plug-in plates 24 and upper plug-in plates 26 that are symmetrical and can slide left and right are connected to the lower frame 10 and the upper frame 11 respectively. The plug plate 24 and the upper plug plate 26 can both contact the inclined end 22 on the plug rack 21. The lower plug plate 24 and the upper plug plate 26 are both L-shaped, and the L-shaped lateral extension end of the lower plug plate 24 located below is longer than the upper plug plate 26. The hollow portion at the middle end of the lower frame 10 is fixed with a boss 14, which protrudes upward. The upper end surface of the boss 14 abuts against the backlight panel 23, which can abut against the two lower plug plates 24 symmetrically on the left and right. The upper end surface of the boss 14 abuts against the lower plug plate 24. The upper end surfaces of the transversely extending ends are in the same plane, LED lamp beads 32 are evenly distributed on the upper end of the backlight plate 23, a groove 16 is provided on the boss 14, and slide grooves 15 are provided at the left and right ends of the lower frame 10. The lower plug-in plate 24 is slidably arranged on the slide groove 15, and the lower side of the groove 16 is connected to a plug-in groove 17 that expands outward. A transverse light source 18 is clamped in the plug-in groove 17, and the transverse light source 18 is composed of an elastic outer frame and LED lamp beads evenly distributed at the inner end of the outer frame.

[0027] Components are placed in a distributed manner at the lower frame 10 and the upper frame 11. For example, a transverse light source 18, a reflective sheet 19 and a backlight plate 23 are placed in the lower frame 10, and a light guide plate 25 and a multilayer film 27 are placed in the upper frame 11. The transverse light source 18 and the reflective sheet 19 are pushed into the groove 16 to elastically contract the transverse light source 18. As the transverse light source 18 moves downward, the transverse light source 18 pops out to the insertion groove 17 and abuts against the side wall of the insertion groove 17. The lower end of the reflective sheet 19 abuts against the lower side wall of the groove 16. The transverse light source 18 abuts against the peripheral side wall of the insertion groove 17. Through the operation of the transverse light source 18, the light is reflected upward under the reflection of the reflective sheet 19, thereby displaying external information such as time.

[0028] When placing the light guide plate 25 and the multilayer film 27, the upper insert plate 26 is pushed to the left and right directions, so that the L-shaped horizontally extending end of the upper insert plate 26 is received in the upper frame 11, and the upper frame 11 is turned upside down so that the flexible rubber pad 12 is located at the bottom, so that the flexible rubber pad 12 can be sequentially placed downwardly into the multilayer film 27 and the light guide plate 25, and the slot 20 is inserted upwardly at the insert rack 21 of the upper frame 11, so that the insert rack 21 pushes the upper insert plate 26 to move through the inclined end 22, so that the upper insert plates 26 at the left and right ends clamp the light guide plate 25 to achieve the positioning of the light guide plate 25 and the multilayer film 27, and then the upper frame 11 is turned over as a whole;

[0029] During the flipping process, the user holds the two left and right plug-in frames 21, and then assembles the lower frame 10 and the upper frame 11. After inserting the plug-in frames 21 into the slots 20 of the lower frame 10, the plug-in frames 21 are released, and the upper frame 11 is pushed downward, so that the upper frame 11 is completely fitted with the upper end of the lower frame 10. The upper plug-in plate 26 can also maintain an abutting relationship during the sliding of the plug-in frames 21, thereby maintaining the stability of the light guide plate 25 and the multi-layer film 27.

[0030] Similarly, when the inserting frame 21 is inserted into the slot 20 of the lower frame 10, the inclined end 22 can push the lower inserting plate 24 to move left and right, so that the L-shaped longitudinal extension end of the lower inserting plate 24 and the left and right clamping backlight plates 23 can realize the positioning of the backlight plate 23;

[0031] When the display is not working, the time and other external information are displayed through the horizontal light source 18, and the backlight panel 23 is not working. When it is working, the user touches the display screen to control the backlight panel 23 to work for human-computer interaction.

[0032] Embodiment 2:

[0033] Referring to Example 1, according to an embodiment of the present invention, a double-layer energized backlight source is provided at one end of the front and rear ends of the rack 21, and the control mechanism 33 includes a sliding cavity 35 opened in the rack 21, and the sliding cavity 35 is symmetrically arranged up and down and is respectively located at the lower frame 10 and the upper frame 11, and a connecting cavity 36 is opened between the two sliding cavities 35, and a sliding rod 37 is slidably connected in the sliding cavity 35, and a push spring 39 is connected between the sliding cavity 35 and the sliding rod 37, and a connecting plate 38 is fixed between the two adjacent sliding rods 37, and a connecting plate 38 is opened between the lower frame 10 and the upper frame 11. A through slot 42 is provided, which can be communicated with the sliding cavity 35. Two abutment plates 40 distributed up and down are fixedly provided on the through slot 42. The ends of the two abutment plates 40 that are far away from each other can abut against the upper and lower sliding rods 37. A through hole is provided above the through slot 42, which passes through the upper frame 11. A plug-in rod 34 that can slide up and down is connected to the through hole. An inclined surface 43 is provided at the lower end of the plug-in rod 34. The inclined part of the inclined surface 43 is arranged toward the sliding cavity 35 and can abut against the sliding cavity 35. The plane end above the inclined surface 43 is restricted by the through slot 42 and cannot abut against the plane end of the sliding cavity 35.

[0034] During the installation of the inserting frame 21 and the upper frame 11, Fig.10 The user pushes the slide bar 37 at the lower end to slide into the slide cavity 35, so that the slide bar 37 is completely received in the inserting frame 21, so that the slide bar 37 and the end surface of the inserting frame 21 are kept flush, so that the inserting frame 21 is smoothly inserted into the slot 20. After the work is completed, the slide bar 37 is released. Under the connection of the connecting plate 38, the slide bar 37 is pushed by the spring force of the push spring 39 to move away from the inserting frame 21, so that the slide bar 37 can be inserted into the through groove 42 and abut against the end surface of the abutting plate 40;

[0035] Similarly, by pushing the plug rod 34 downward, the inclined surface 43 of the plug rod 34 contacts the upper end of the slide bar 37, so that the plug rack 21 is inserted into the lower slot 20, and the inclined surface 43 moves downward until it abuts against the lower side wall of the through slot 42 and stops. At this time, there is still a certain distance between the slide cavity 35 and the end surface of the plug rack 21. By chamfering the slide rod 37, the slide rod 37 can be released from the abutment plate 40, thereby overcoming the push when the chamfered inclined end is released. The spring force of the spring 39 shrinks into the plug-in bracket 21. After the lower frame 10 is fitted with the upper frame 11, the slide bar 37 will move outward under the spring thrust of the push spring 39 and contact the inclined surface 43, thereby pushing the plug-in rod 34 to move upward and reset under the contact with the inclined surface 43 until the elastic force at the push spring 39 and the gravity at the plug-in rod 34 are balanced under the contact between the slide bar 37 and the inclined surface 43. The upper end of the plug-in rod 34 protrudes from the upper end of the upper frame 11 to facilitate the next press.

[0036] Embodiment 3:

[0037] Referring to Example 2, a double-layer powered backlight source according to an embodiment of the present invention, optionally, a circumferentially arranged connecting groove 28 is opened at the lower end of the flexible rubber pad 12, a photodiode film 29 is fixedly arranged on the connecting groove 28, the left end of the photodiode film 29 is connected to two wires 30 that pass through the upper frame 11, a through cavity 31 is opened on the backlight plate 23, the through cavity 31 can be connected to the groove 16, the size of the groove 16 and the through cavity 31 are consistent, the front and rear ends of the backlight plate 23, the light guide plate 25 and the multi-layer film 27 can respectively abut the inner end surfaces of the lower frame 10 and the upper frame 11, the bottom end of the lower frame 10 is fixedly provided with evenly distributed plug strips 41, and a cavity is opened between two adjacent plug strips 41 to form a plug slot for plug-in matching.

[0038] The photodiode film 29 is used to detect the lateral astigmatism problem when the lower frame 10 and the upper frame 11 are working after being assembled and combined;

[0039] The connecting groove 28 can receive light passing through the light guide plate 25 and the multilayer film 27, and can convert the light into an electrical signal and transmit it outwardly through the wire 30. The wire 30 is connected to the receiving processor at the outer end to obtain the intensity of the emitted light, thereby realizing self-checking, and preventing the possibility that the light emitted by the LED lamp beads 32 on the left and right sides of the backlight panel 23 can be transmitted into the connecting groove 28 after the backlight panel 23 deviates from the position, thereby preventing the misalignment between the through cavity 31 and the groove 16.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A double-layer energized backlight source, comprising a lower frame (10) and an upper frame (11), characterized in that: A flexible rubber pad (12) is provided on the upper frame (11), and a light-transmitting portion (13) is provided at the lower end of the flexible rubber pad (12); The light-transmitting portion (13) comprises a multi-layer film sheet (27) distributed on the upper side and a light guide plate (25) distributed on the lower side, and the light guide plate (25) can be attached to the multi-layer film sheet (27); A slot (20) is provided between the lower frame (10) and the upper frame (11), and a plug-in frame (21) is inserted between the slots (20) that are fitted together. A left-right symmetrical lower plug-in board (24) and an upper plug-in board (26) are respectively connected in the lower frame (10) and the upper frame (11), and both the lower plug-in board (24) and the upper plug-in board (26) can contact the inclined end (22) on the plug-in frame (21). A backlight board (23) is abutted on the lower frame (10), and the backlight board (23) can abut against the two left-right symmetrical lower plug-in boards (24). A groove (16) is provided on the lower frame (10), and a plug-in groove (17) that expands outward is connected to the lower side of the groove (16), and a horizontal light source (18) is clamped in the plug-in groove (17).

2. A double-layer energized backlight source according to claim 1, characterized in that: A control mechanism (33) is provided at one end of the front and rear ends of the inserting frame (21), and the control mechanism (33) includes a sliding cavity (35) opened in the inserting frame (21), and the sliding cavity (35) is symmetrically arranged at the lower frame (10) and the upper frame (11) respectively, and a connecting cavity (36) is opened between the two sliding cavities (35), and a sliding rod (37) is slidably connected in the sliding cavity (35), and a push spring (39) is connected between the sliding cavity (35) and the sliding rod (37), and a connecting spring (39) is fixedly provided between the two upper and lower adjacent sliding rods (37). A plate (38) is provided between the lower frame (10) and the upper frame (11), and a through slot (42) is provided between the through slot (42), and the through slot (42) can be connected with the sliding cavity (35). Two abutment plates (40) distributed up and down are fixed on the through slot (42), and the ends of the two abutment plates (40) that are far away from each other can abut against the two upper and lower sliding rods (37). A through hole is provided above the through slot (42) and passes through the upper frame (11), and a plug rod (34) that can slide up and down is connected to the through hole, and an inclined surface (43) is provided at the lower end of the plug rod (34).

3. The double-layer energized backlight source according to claim 2, characterized in that: The inclined portion of the inclined surface (43) is arranged toward the slide cavity (35) and is capable of abutting against the slide cavity (35), and the plane end above the inclined surface (43) is restricted by the through groove (42) and cannot abut against the plane end of the slide cavity (35).

4. The double-layer energized backlight source according to claim 1, characterized in that: The lower end of the flexible rubber pad (12) is provided with a circumferentially arranged connection groove (28), a photodiode film (29) is fixedly arranged on the connection groove (28), and the left end of the photodiode film (29) is connected to two wires (30) that pass through the upper frame (11).

5. The double-layer energized backlight source according to claim 1, characterized in that: The front and rear ends of the backlight plate (23), the light guide plate (25) and the multilayer film (27) can respectively abut against the inner end surfaces of the lower frame (10) and the upper frame (11); the bottom end of the lower frame (10) is fixed with evenly distributed plug-in strips (41); a cavity is provided between two adjacent plug-in strips (41) to form a plug-in slot for plug-in matching.

6. The double-layer energized backlight source according to claim 1, characterized in that: The lower plug plate (24) and the upper plug plate (26) are both arranged in an L shape, and the L-shaped transverse extension end of the lower plug plate (24) located at the bottom is longer than that of the upper plug plate (26), and the upper end surface of the boss (14) and the upper end surface of the transverse extension end of the lower plug plate (24) are in the same plane.

7. The double-layer energized backlight source according to claim 1, characterized in that: The inserting frame (21) is arranged in a cross shape as a whole, and inclined ends (22) are provided at both upper and lower ends of the inserting frame (21), and the inclined direction of the inclined end (22) is arranged close to the light guide plate (25).

8. The double-layer energized backlight source according to claim 1, characterized in that: A through cavity (31) is provided on the backlight plate (23), the through cavity (31) can be communicated with the groove (16), and the groove (16) and the through cavity (31) have the same size.

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