QD diffusion plate and display module with heat dissipation function thereof

Abstract

The utility model relates to the technical field of display modules, in particular to a QD diffusion plate and a display module with a heat dissipation function. The display module with the heat dissipation function comprises a backlight source, optical films, a driving circuit and a liquid crystal panel, the backlight source is arranged in a frame body to serve as a basic lighting unit, the optical films are sequentially installed in the frame body in an overlapped mode, the liquid crystal panel is installed on the foremost side in the frame body, and the driving circuit is connected with the liquid crystal panel. And the driving circuit is arranged in the frame body, is positioned on the rear side of the liquid crystal panel, is connected with the liquid crystal panel through a flexible printed circuit board, and is connected with the driving circuit through an FPC (Flexible Printed Circuit). Heat is directly absorbed and taken away through a cold circulation system (cooling liquid circulation), the fan is assisted to accelerate air flow, heat can be more effectively dissipated, cooling liquid can directly absorb heat from a heat source, the fan helps to take away the heat rapidly, and a dual heat dissipation mechanism is formed.

Description

Technical Field

[0001] This utility model relates to the field of display module technology, and in particular to a QD diffusion plate and a display module with heat dissipation function. Background Technology

[0002] In the field of modern display technology, with the continuous improvement of resolution, brightness, and color performance, the heat dissipation of display devices has become increasingly important. Especially for display modules with high brightness, large size, and long operating time, an effective heat dissipation mechanism is one of the key factors to ensure their stability and extend their service life.

[0003] Existing display modules often use fans to force airflow for heat dissipation; however, a single fan cooling method has some inherent limitations. First, in enclosed or semi-enclosed spaces, the effectiveness of a fan is limited by the ambient temperature and the design of the airflow path. Second, fans can only accelerate the dissipation of surface heat, and have limited ability to handle concentrated heat generated by internal core components (such as driver circuits and LED backlights). Furthermore, after prolonged use, dust accumulation can reduce fan efficiency and may cause increased noise or malfunction. Utility Model Content

[0004] To overcome the aforementioned shortcomings, the technical problem of this utility model is to provide a QD diffusion plate and a display module with heat dissipation function.

[0005] The technical solution is: a QD diffusion plate and a display module with heat dissipation function.

[0006] In a first aspect, this utility model provides a display module with heat dissipation function. The display module includes a backlight, optical films, a driving circuit, and a liquid crystal panel. The backlight is arranged inside the frame as a basic lighting unit. The optical films are stacked and installed in sequence inside the frame. The liquid crystal panel is installed at the front of the frame and is precisely aligned with the installed optical films. The driving circuit is arranged inside the frame and located behind the liquid crystal panel. It is connected to the liquid crystal panel through a flexible printed circuit board and connected to the driving circuit through an FPC.

[0007] To further explain, the display module also includes a heat sink frame, a heat conduction plate, heat conduction rods, and heat sinks. The heat sink frame is connected to the rear side wall of the frame, and the heat conduction plate is connected to the front side of the heat sink frame and is in close contact with the rear side wall of the frame. Three heat conduction rods are connected to both sides of the heat conduction plate, and heat sinks located inside the heat sink frame are connected between the heat conduction rods.

[0008] To further explain, several ventilation holes are spaced apart on the rear side wall of the heat sink frame.

[0009] To further explain, the display module also includes a fan, with the fan symmetrically mounted throughout the top of the heat sink frame.

[0010] Further illustrate, the display module further includes lifting plate, box, refrigerator, check valve and connecting pipe, the top of the heat dissipation frame is connected with the box containing cooling liquid, the refrigerator is installed on the front side wall in the box, the lifting plate is slidably connected in the box, the connecting pipe with multiple bending paths is inserted in the heat dissipation fin, the connecting pipe penetrates the top of the heat dissipation frame at both ends and is connected with the box and communicates, the check valve is installed at both ends of the connecting pipe, and only one side check valve can only enter but not exit, and the other side check valve can only exit but not enter.

[0011] Further illustrate, the display module further includes variable speed device, belt pulley set and reciprocating screw rod, the rotating shaft of the fan penetrates the top of the shell body, and the variable speed device is installed at the top end of the rotating shaft, the reciprocating screw rod is symmetrically and rotatably connected in the box, the reciprocating screw rod is threadedly connected with the lifting plate, and the top end of the reciprocating screw rod penetrates the top of the box and is connected with the rotating shaft of the variable speed device on the two sides through the belt pulley set.

[0012] In the second aspect, the utility model provides a kind of QD diffusion plate, QD diffusion plate is installed in a kind of display module with heat dissipation function, QD diffusion plate is fixed in frame by adhesive, QD diffusion plate is accurately positioned between backlight and optical film.

[0013] Further illustrate, QD diffusion plate contains one or more quantum dot material layers.

[0014] The utility model has the advantages that: 1, the cooling liquid circulation directly absorbs and takes away heat, and is assisted by fan to accelerate air flow, which can effectively dissipate heat, and the cooling liquid can directly absorb heat from heat source, and the fan helps to quickly take away the heat, forming a double heat dissipation mechanism.

[0015] 2, the cooling liquid circulation mechanism driven by the lifting plate and the reciprocating screw rod is used in cooperation with the check valve, so that the cooling liquid can be efficiently circulated in the whole system, the heat transfer efficiency from the heat dissipation fin to the cooling liquid is increased, and the heat dissipation performance is further improved. DETAILED DESCRIPTION

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0017] Figure 2 It is a schematic view of the internal connection structure of the frame component of the utility model.

[0018] Figure 3 It is a sectional view of the heat dissipation frame component of the utility model.

[0019] Figure 4 It is a sectional view of the box component of the utility model.

[0020] In the attached diagram: 1-frame, 2-backlight, 3-QD diffuser plate, 4-optical film, 5-drive circuit, 6-LCD panel, 7-heat sink frame, 8-heat conduction plate, 9-heat conduction rod, 10-heat sink, 11-fan, 12-gearbox, 13-pulley assembly, 15-reciprocating screw, 16-lifting plate, 17-box, 18-cooler, 19-one-way valve, 20-connecting pipe. Detailed Implementation

[0021] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0022] Example: This example discloses a display module with heat dissipation function, such as... Figures 1-2 As shown, the display module includes a backlight 2, optical films 4, a driving circuit 5, and a liquid crystal panel 6. The backlight 2 is arranged inside the frame 1 as a basic lighting unit. The optical films 4 are stacked and installed in the frame 1. Tape or other fixing devices can be used to ensure that the films do not shift. The liquid crystal panel 6 is installed at the front of the frame 1 and is precisely aligned with the installed optical films 4. The driving circuit 5 is located inside the frame 1, behind the liquid crystal panel 6. It is connected to the liquid crystal panel 6 through a flexible printed circuit board and connected to the driving circuit 5 through the FPC to ensure that the electrical signals can be accurately transmitted to the liquid crystal panel 6.

[0023] like Figure 1 and Figure 3 As shown, the display module also includes a heat dissipation frame 7, a heat conduction plate 8, heat conduction rods 9, and a heat sink 10. The heat dissipation frame 7 is connected to the rear side wall of the frame 1. The heat conduction plate 8, which is in close contact with the rear side wall of the frame 1, is connected to the front side of the heat dissipation frame 7. Three heat conduction rods 9 are connected to both sides of the heat conduction plate 8. The heat sink 10 located inside the heat dissipation frame 7 is connected between the heat conduction rods 9. During the operation of the display module, a certain amount of heat is generated. This heat is first absorbed by the heat conduction plate 8, and then conducted to the heat sink 10 through the heat conduction rods 9. Finally, the heat sink 10 dissipates the heat into the air, thereby achieving effective heat dissipation of the display module. Several through holes are spaced apart on the rear side wall of the heat dissipation frame 7 so that the heat inside the heat dissipation frame 7 can be dissipated more effectively.

[0024] like Figure 1 , Figure 3 and Figure 4As shown, the display module further comprises a fan 11, a lifting plate 16, a tank 17, a refrigerating device 18, a one-way valve 19 and a connecting pipe 20. The fan 11 is installed on the top of the heat dissipation frame 7 in a left-right symmetrical through type. Starting the fan 11 to blow air into the heat dissipation frame 7 can increase the internal air flow, so that the heat is dissipated faster from the through hole, thereby significantly improving the overall heat dissipation efficiency. The tank 17 containing cooling liquid is connected to the top of the heat dissipation frame 7. The refrigerating device 18 is installed on the front side wall in the tank 17. The lifting plate 16 is slidably connected in the tank 17, used to adjust the flow direction of the cooling liquid. The connecting pipe 20 with a multi-bend path design is inserted in the heat dissipation fin 10, so as to increase the contact area between the heat dissipation fin 10 and the connecting pipe 20, thereby improving the heat exchange efficiency. The connecting pipe 20 penetrates the top of the heat dissipation frame 7 at both ends and is connected and communicated with the tank 17. The one-way valve 19 is installed at both ends of the connecting pipe 20. One side of the one-way valve 19 only allows entry and does not allow exit, and the other side of the one-way valve 19 only allows exit and does not allow entry. The liquid in the connecting pipe 20 can enter the tank 17 through the one-way valve 19 on one side, and the cooling liquid in the tank 17 cannot enter the connecting pipe 20 through the one-way valve 19. On the contrary, the design of the one-way valve 19 on the other side is opposite to that.

[0025] As shown in Figure 3 and Figure 4 , the display module further comprises a transmission 12, a belt pulley set 13 and a reciprocating screw rod 15. The rotating shaft of the fan 11 penetrates the top of the shell and is provided with a transmission 12 at the top end. The reciprocating screw rod 15 is connected to the tank 17 in a left-right symmetrical rotating manner. The reciprocating screw rod 15 is threadedly connected with the lifting plate 16. The rotation of the reciprocating screw rod 15 can drive the lifting plate 16 to move up and down at a constant speed, thereby controlling the flow direction of the cooling liquid in the tank 17. The top end of the reciprocating screw rod 15 penetrates the top of the tank 17 and is connected to the rotating shaft of the transmission 12 on both sides through the belt pulley set 13, so as to transmit the power of the fan 11 to the reciprocating screw rod 15 after speed regulation by the transmission 12, thereby realizing effective utilization of power.

[0026] In use of the display module, the cooling liquid in the box 17 flows to the radiating fin 10 through the connecting pipe 20 to exchange heat with the heat on the radiating fin 10 efficiently. When the fan 11 is started, the rotating shaft thereof rotates and drives the power to be decelerated by the transmission 12, and then is transmitted to the reciprocating screw rod 15 through the belt pulley set 13, the reciprocating screw rod 15 rotates to drive the lifting plate 16 connected with the reciprocating screw rod 16 by screw thread to move up and down slowly. Since the one-way valve 19 is arranged at each port of the connecting pipe 20 (only allowing the cooling liquid to flow in at one side and only allowing the cooling liquid to flow out at the other side), when the lifting plate 16 moves downward, the cooling liquid in the box 17 is pushed to flow into the connecting pipe 20 from one end and flow back to the box 17 from the other end, so that the directional flow of the cooling liquid and the heat exchange are realized. Meanwhile, the refrigerator 18 continuously operates to cool the cooling liquid in the box 17, and when the lifting plate 16 moves upward, the flow direction of the cooling liquid is opposite, so that the heat dissipation efficiency of the display module is improved, and the normal operation of the display module can be ensured under the condition of abnormally high temperature. Finally, when the display module is used, the power supply of the related power components is turned off synchronously.

[0027] The embodiment also discloses a QD diffusion plate, which is installed in a display module with heat dissipation function, as shown in the figure. Figures 1-2 The QD diffusion plate 3 is fixed in the frame 1 stably by high-efficiency adhesive, is used for homogenizing and improving light quality, is positioned accurately between the backlight 2 and the optical film 4, ensures that the three are tightly attached without seam, bubble and dust particle, and contains one or more layers of quantum dot material layer, can enhance the color performance of the backlight 2 and homogenize light output.

[0028] The above only describes the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification or direct or indirect application in other related technical fields is also included in the patent protection range of the utility model.

Claims

1. A display module with heat dissipation function, characterized in that: The display module comprises a backlight source (2), an optical film (4), a driving circuit (5) and a liquid crystal panel (6), the backlight source (2) is arranged in the frame body (1) as a basic lighting unit, the optical film (4) is sequentially and superimposedly arranged in the frame body (1), the liquid crystal panel (6) is arranged at the front side in the frame body (1) and is accurately aligned with the arranged optical film (4), the driving circuit (5) is arranged in the frame body (1) and is located at the rear side of the liquid crystal panel (6), the driving circuit (5) is connected with the liquid crystal panel (6) through a flexible printed circuit board and is connected with the driving circuit (5) through an FPC.

2. The display module with heat dissipation function according to claim 1, characterized in that: The display module further comprises a heat dissipation frame (7), a heat conduction plate (8), a heat conduction rod (9) and a heat dissipation fin (10), the heat dissipation frame (7) is connected to the rear wall of the frame body (1), the heat conduction plate (8) is connected to the front side of the heat dissipation frame (7) and is tightly attached to the rear wall of the frame body (1), three heat conduction rods (9) are connected to the left and right sides of the heat conduction plate (8), and the heat dissipation fin (10) is connected between the heat conduction rods (9) and is located in the heat dissipation frame (7).

3. The display module with heat dissipation function according to claim 2, characterized in that: A plurality of ventilation through holes are formed in the rear wall of the heat dissipation frame (7).

4. The display module with heat dissipation function according to claim 3, characterized in that: The display module further comprises a fan (11), and the fan (11) is symmetrically and throughly arranged on the top of the heat dissipation frame (7).

5. The display module with heat dissipation function according to claim 4, characterized in that: The display module further comprises a lifting plate (16), a box body (17), a refrigerating device (18), a one-way valve (19) and a connecting pipe (20), the box body (17) containing cooling liquid is connected to the top of the heat dissipation frame (7), the refrigerating device (18) is arranged on the front side wall in the box body (17), the lifting plate (16) is slidably connected in the box body (17), the connecting pipe (20) with a plurality of bending paths is inserted in the heat dissipation fin (10), the connecting pipe (20) penetrates through the top of the heat dissipation frame (7) and is connected and communicated with the box body (17), the one-way valves (19) are arranged at the two ends of the connecting pipe (20), one of the one-way valves (19) only allows liquid to flow in and the other one-way valve (19) only allows liquid to flow out.

6. The display module with heat dissipation function according to claim 5, characterized in that: The display module further comprises a speed changer (12), a belt pulley set (13) and a reciprocating screw rod (15), the rotating shaft of the fan (11) penetrates through the top of the shell of the fan (11) and is connected with the speed changer (12) arranged at the top end of the rotating shaft, the reciprocating screw rod (15) is symmetrically and rotatably connected in the box body (17), the reciprocating screw rod (15) is threadedly connected with the lifting plate (16), the top end of the reciprocating screw rod (15) penetrates through the top of the box body (17) and is connected with the rotating shaft of the speed changer (12) through the belt pulley set (13).

7. A QD diffusion plate characterized by: The QD diffusion plate is arranged in the display module with the heat dissipation function according to claim 6, the QD diffusion plate (3) is fixed in the frame body (1) through an adhesive, and the QD diffusion plate (3) is accurately positioned between the backlight source (2) and the optical film (4).

8. A QD diffuser plate according to claim 7, characterized in that: The QD diffusion plate (3) comprises one or more layers of quantum dot material layers.

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