Mini backlight module and display screen equipment

Abstract

The utility model provides a Mini backlight module and a display screen device. The Mini backlight module comprises a back plate, a lamp panel, a reflector plate, a diffusion plate, a diaphragm and a glass layer which are sequentially arranged in a stacked mode. The lamp panel is formed by splicing at least two Mini LED lamp panels; the number of the driving boards is the same as that of the Mini LED lamp panels; the Mini LED lamp panel is connected with a driving board through an FFC (Flexible Flat Cable); the driving plate is arranged on the other face, away from the lamp panel, of the back plate. The Mini backlight module provided by the utility model has a remarkable light increasing and brightening effect, can also realize separate control on the switch and the brightness in a partitioned manner, and is easier to install and operate, so that the Mini backlight module is higher in practicability, better in lighting effect, easy to realize batch production and good in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to a Mini backlight module and a display screen device. Background Art

[0002] The LCD panels in the prior art often use LED light strips to provide backlight sources. The LEDs are relatively few and unevenly distributed, and only support a single control mode, that is, all lights are turned on or off at the same time. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a Mini backlight module and a display screen device with zoned lighting control and better light effect.

[0004] In order to solve the above technical problems, the first technical solution adopted by the utility model is:

[0005] A Mini backlight module comprises a back plate, a light plate, a reflector, a diffuser, a membrane and a glass layer which are stacked in sequence; the light plate is formed by splicing at least two Mini LED light plates;

[0006] It also includes FFC lines and the same number of driver boards as the Mini LED light boards; a Mini LED light board is connected to a driver board through the FFC line; the driver board is arranged on the other side of the back panel away from the light board.

[0007] In some embodiments, two ends of the FFC line are provided with marking lines.

[0008] In some embodiments, a bracket is further included; the bracket is disposed between the reflective sheet and the diffuser plate to fix the diffuser plate.

[0009] In some embodiments, the membrane includes a quantum film and a COP film that are stacked; the quantum film is disposed close to the diffuser plate.

[0010] In some embodiments, a middle frame is also included; the back panel, light panel, reflector, diffuser and membrane are arranged inside the middle frame.

[0011] In some embodiments, the glass layer includes a glass OC, a COF base tape and a PCB board connected in sequence; the glass OC is fixedly arranged on the middle frame; the COF base tape is arranged on one side of the glass OC; and the PCB board is fixedly arranged on the back panel.

[0012] In some embodiments, the Mini backlight module further includes a decorative strip; the decorative strip covers the COF baseband and the PCB board is arranged on the middle frame.

[0013] In some embodiments, the Mini backlight module further includes a button; the button is disposed on the decorative strip.

[0014] In some embodiments, the Mini LED lamp board is provided with 1152 or 2304 mini lamp beads.

[0015] The second technical solution adopted by the utility model is:

[0016] A display screen device comprises any one of the Mini backlight modules described above.

[0017] The beneficial effect of the utility model is that the utility model is provided with a light board composed of at least two Mini LED light boards spliced ​​together on the front of the back panel, and a corresponding driver board is separately configured for each Mini LED light board, so as to realize the separate control of switches and brightness of multiple partitions, which is more practical than the traditional LCD module. At the same time, a reflective sheet is also configured on the front of the light board to reduce light loss and increase brightness; a diffusion plate is configured to allow light to stay on the diffusion plate, and used in conjunction with the reflective sheet, the amount of light emitted from the front is further increased to achieve the effect of increasing the illumination; further, a diaphragm is also provided on the diffusion plate to excite the quantum dots to emit white light, which has the effect of increasing brightness and brightening. Therefore, the backlight source provided by the Mini backlight module of the utility model has a significant effect of increasing brightness and brightening, and can also realize the separate control of switches and brightness in different partitions, which is more practical and has better lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded diagram of the structure of a Mini backlight module provided by an embodiment of the present invention.

[0019] Figure 2 An exploded diagram of the structure of a Mini backlight module provided in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0021] Please refer to Figure 1 , Figure 1 The structure of a Mini backlight module provided by an embodiment of the present invention is an exploded diagram. Figure 1 As shown, an embodiment of the utility model provides a Mini backlight module, comprising a back plate 1, a light board 2, a reflector 3, a diffuser 4, a membrane 5 and a glass layer 6 which are stacked in sequence; the light board 2 is formed by splicing at least two Mini LED light boards 21;

[0022] The Mini backlight module also includes FFC lines 7 and the same number of driver boards 8 as the Mini LED light boards 21; one Mini LED light board 21 is connected to one driver board 8 via an FFC line 9; the driver board 8 is arranged on the other side of the back panel 1 away from the light board 2. That is, the light board 2 is arranged on the front side of the back panel 1, and the driver board 8 is arranged on the back side of the back panel 1. Figure 1 As shown, taking the lamp board 2 formed by splicing two Mini LED lamp boards 21 as an example, a driving board 8a and a driving board 8b are provided correspondingly, and they are connected by a driving board connecting line 10.

[0023] The back plate is used to provide the most important support for the backlight module;

[0024] The light board is used to provide a switch and brightness backlight source that can be individually controlled in different areas;

[0025] The Mini LED light board is used as a unit to independently control the light on and brightness, and the specific partition layout depends on actual needs. Optionally, a Mini LED light board is provided with 1152 or 2304 Mini LED lamp beads;

[0026] The reflector is used to reflect the refracted and scattered light source back to the diffuser multiple times so that it can be reused and light loss can be reduced;

[0027] The diffusion plate is used to make the light stay on the surface of the diffusion plate. When the optical fiber hits each light-conducting light, the reflected light will diffuse to various angles, and then destroy the reflection condition and be emitted from the front of the diffusion plate.

[0028] The film is used to convert the dazzling LED blue light excitation quantum dots into gentle white light, while also having the effect of increasing brightness and brightening.

[0029] The glass layer is used to encapsulate and project light;

[0030] The FFC line is used to connect the driver board and the Mini LED light board to light up the backlight; in particular, a Mini LED light board may be connected to a driver board via 3 / 6 FFC lines.

[0031] The driving board is used to drive the Mini LED light board connected thereto.

[0032] In this embodiment, a light board composed of at least two Mini LED light boards is arranged on the front of the back panel, and a corresponding driver board is separately configured for each Mini LED light board, so as to realize the independent control of switches and brightness of multiple partitions, which is more practical than the traditional LCD module. At the same time, a reflector is also arranged on the front of the light board to reduce light loss and improve brightness; a diffusion plate is arranged to make the light stay on the diffusion plate, and used in conjunction with the reflector, the amount of light emitted from the front is further increased to achieve the effect of improving the illumination; further, a diaphragm is also arranged on the diffusion plate to excite the quantum dots to emit white light, which has the effect of increasing brightness and brightening. Therefore, the backlight source provided by the Mini backlight module of the utility model has a significant effect of increasing brightness and brightening, and can also realize the independent control of switches and brightness of partitions, which is more practical and has better lighting effect.

[0033] In some specific implementations of this embodiment, each FFC line is provided with a marking line at both ends. During the installation process, after one end of the FFC line is inserted, the marking line on it is invisible, so as to confirm that the FFC line is inserted in place, and avoid the situation where some of the sheet lamp beads do not light up due to the FFC line not being inserted in place.

[0034] In the traditional process, many undesirable situations such as the lamp board and the lamp beads not lighting up are caused by errors in the installation of the FFC line and the driver board. In this embodiment, the setting of the engraved lines at both ends of the FFC line will effectively reduce the error rate of the FFC line and the driver board. If the FFC line is inserted in place, the engraved lines are not visible. If the engraved lines are skewed or exposed, it proves that there is an error in the operation. The setting of the engraved lines can make it possible to independently and efficiently judge whether the FFC line is inserted in place through simple observation, which significantly improves the accuracy of the FFC line operation.

[0035] See also Figure 2 , Figure 2 The following is an exploded diagram of the structure of a Mini backlight module provided by a specific embodiment of the present invention. Figure 2 As shown:

[0036] In some specific embodiments, the Mini backlight module further includes a bracket 11, which is disposed between the reflector 3 and the diffuser 4 and is used to fix and support the diffuser 4. Optionally, the bracket is a four-sided bracket, which is disposed between the four sides of the light board and the backboard.

[0037] In some specific embodiments, the diaphragm 5 of the Mini backlight module specifically includes a stacked quantum film 51 and a COP film 52; the quantum film 51 is arranged close to the diffuser 4. The COP diaphragm is 0 degrees, mainly playing the effect of increasing brightness; and the quantum film mainly plays the effect of converting blue light into white light.

[0038] In some specific implementations, the Mini backlight module further includes a middle frame 12; the back plate 1, the light plate 2, the reflector 3, the diffuser 4 and the membrane 5 are arranged in the middle frame 12. That is, the entire assembly including the back plate, the light plate, the reflector, the diffuser and the membrane is fixed by the middle frame to prevent foreign matter from entering the backlight, and also to prepare for the cover glass layer.

[0039] In some specific embodiments, the Mini backlight module further includes a glue layer 13; the glass layer 6 is fixedly arranged on a side of the middle frame 12 opposite to the film 5 through the glue layer 13. Specifically, the glass layer is positioned and attached to the middle frame by the double-sided adhesive on the middle frame.

[0040] Preferably, after the glass layer is attached to the middle frame, it is pressed by a pressing machine to ensure that the glass layer is tightly bonded to the middle frame and prevent the glass layer from falling off.

[0041] In some specific embodiments, the glass layer 6 specifically includes a glass OC 61, a COF base tape 62 and a PCB board 63 connected in sequence; the glass OC 61 is fixedly arranged on the middle frame 12 through the adhesive layer 13; the COF base tape 62 is arranged on one side of the glass OC 61; and the PCB board 63 is fixedly arranged on the back panel 1.

[0042] Preferably, a graphite sheet is also attached to the COF base tape to prevent the subsequently installed decorative strips from hitting the COF base tape, thereby causing defects such as damage to the COF base tape; at the same time, a conductive cloth is also attached to the ground side of the glass OC to conduct static electricity on the glass surface into the back panel to prevent excessive static electricity from damaging the glass.

[0043] Preferably, the PCB is fixed to the back plate by EVA, and a conductive cloth is attached to the gold finger position of the PCB to guide the static electricity of the glass into the back plate through the conductive cloth without damaging the PCB.

[0044] In some specific implementations, the Mini backlight module further includes a decorative strip 14, which covers the COF base tape 62 and the PCB board 63 and is disposed on the middle frame 12. Here, the decorative strip plays a role in covering and protecting the COF base tape and the PCB board.

[0045] Preferably, the decorative strip is attached to the back plate via conductive foam to conduct static electricity on the glass into the back plate.

[0046] In some specific implementations, the Mini backlight module further includes a key 15, and the key 15 is disposed on the decorative strip 14. In particular, if the Mini backlight module is configured with a key function, the key is fixed to the back panel through the decorative strip to provide the key function.

[0047] The embodiment of the utility model further provides a display screen device, which includes the Mini backlight module described in any one of the above embodiments. The specific structure of the Mini backlight module is not repeated here, and please refer to the description of the above embodiments for details.

[0048] In summary, the Mini backlight module and display device provided by the utility model are a light board composed of at least two Mini LED light boards arranged on the front of the backboard, and a corresponding driver board is separately configured for each Mini LED light board, so as to realize the separate control of switches and brightness in multiple partitions, which is more practical than the traditional LCD module. At the same time, a reflector is also configured on the front of the light board to reduce light loss and improve brightness; a diffusion plate is configured to allow light to stay on the diffusion plate, and used in conjunction with the reflector, the amount of light emitted from the front is further increased to achieve the effect of improving the illuminance; further, a diaphragm is also provided on the diffusion plate to excite the quantum dots to emit white light, which has the effect of increasing light and brightening; in addition, the setting of the engraved lines at both ends of the FFC line will effectively reduce the error rate of the FFC line and the driver board operation. Therefore, the backlight source provided by the Mini backlight module of the utility model has a significant effect of increasing light and brightening, and can also realize the separate control of switches and brightness in the partitions, and is easier to install, so it is more practical, has better light efficiency, and is easy to achieve mass production.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A Mini backlight module, characterized in that: It includes a back plate, a light board, a reflector, a diffuser, a membrane and a glass layer which are stacked in sequence; the light board is formed by splicing at least two Mini LED light boards; It also includes FFC lines and the same number of driver boards as the Mini LED light boards; a Mini LED light board is connected to a driver board through the FFC line; the driver board is arranged on the other side of the back panel away from the light board.

2. The Mini backlight module according to claim 1, characterized in that: Both ends of the FFC line are provided with engraved lines.

3. The Mini backlight module according to claim 1, characterized in that: It also includes a bracket, which is arranged between the reflection sheet and the diffusion plate to fix the diffusion plate.

4. The Mini backlight module according to claim 1, characterized in that: The membrane comprises a quantum film and a COP film which are stacked; the quantum film is arranged close to the diffusion plate.

5. The Mini backlight module according to claim 1, characterized in that: It also includes a middle frame; the back plate, light plate, reflector, diffuser and membrane are arranged inside the middle frame.

6. The Mini backlight module according to claim 5, characterized in that: The glass layer includes a glass OC, a COF base tape and a PCB board connected in sequence; the glass OC is fixedly arranged on the middle frame; the COF base tape is arranged at a side edge of the glass OC; The PCB board is fixed on the back plate.

7. The Mini backlight module according to claim 6, characterized in that: The Mini backlight module also includes a decorative strip; the decorative strip covers the COF baseband and the PCB board is arranged on the middle frame.

8. The Mini backlight module according to claim 7, characterized in that: The Mini backlight module also includes a button; the button is arranged on the decorative strip.

9. The Mini backlight module according to claim 1, characterized in that: The Mini LED lamp board is provided with 1152 or 2304 mini lamp beads.

10. A display screen device, characterized in that: The Mini backlight module comprises any one of claims 1 to 9.

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