Stably-supported display module

Abstract

The utility model discloses a display module with stable support, which comprises a composite film structure, a support and a PCB (printed circuit board) which are sequentially connected from top to bottom, the composite film structure comprises a support film and a flexible circuit board layer, the flexible circuit board layer is fixedly connected with the support film, and a light-transmitting pattern area is arranged on the support film. According to the display module capable of supporting stably and the composite film structure, the hardened and thickened supporting film is adopted, the PET hardened film is not prone to being bent, supporting is stable, the flatness of the whole composite film structure can be guaranteed, the composite film structure is directly fixed to the support in the assembling process, positioning is convenient, and tight connection between the composite film structure and the support in the assembling process is also convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of display modules, and in particular relates to a display module with stable support. Background Art

[0002] White appliances are equipped with touch screens to display various functional modules and perform corresponding operations through touch switches. Usually, the outermost layer of the display module is the panel shell of the appliance. A transparent glass panel or acrylic panel is set in an area of ​​the shell, and the display module is set inside the transparent panel to achieve display and touch. The display module is usually produced and assembled in advance, and after qualified debugging, it is installed inside the panel shell of the appliance.

[0003] The display module usually includes a circuit board, a bracket, and a composite membrane structure. When installing, the composite membrane structure is relatively soft and prone to deformation. The larger the area, the more serious the deformation. When the installer holds it in his hand, it will deform, which will cause poor flatness and warping when the composite membrane structure is bonded to the bracket. It is usually necessary to use external tools to smooth it out, which will make the installation process time-consuming and labor-intensive, and the final flatness after installation cannot meet the requirements. Therefore, the composite membrane structure needs to be improved. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a display module which has stable support, is easy to assemble and meets the flatness requirements.

[0005] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A display module with stable support comprises a composite membrane structure, a bracket and a PCB board connected in sequence from top to bottom, wherein the composite membrane structure comprises a support membrane and a flexible circuit board layer, the flexible circuit board layer is fixedly connected to the support membrane, and a light-transmitting pattern area is arranged on the support membrane.

[0007] Preferably, the support film is a PET hard film, and the thickness of the support film is 0.1 mm to 0.5 mm.

[0008] Preferably, the support film is arranged above the flexible circuit board layer, and the two are bonded and fixed by an adhesive layer.

[0009] Preferably, the adhesive layer is arranged on the periphery of the pattern area.

[0010] Preferably, the flexible circuit board layer comprises an insulating layer, a silver paste circuit layer and a circuit substrate layer, and the silver paste circuit layer is provided with touch-sensitive buttons.

[0011] Preferably, an opaque base color ink is printed on the upper surface of the flexible circuit board layer, and a translucent pattern layer is arranged at a position corresponding to the pattern area of ​​the support film.

[0012] Preferably, the bracket is a plastic bracket, and the plastic bracket is provided with a first lamp cavity.

[0013] Preferably, the first lamp cavity is a trumpet-shaped opening, and the LED lamp on the PCB board is located in the first lamp cavity.

[0014] Preferably, the PCB board is clamped in the plastic bracket, and glue is poured on the edge of the plastic bracket.

[0015] Preferably, the bracket is a foam bracket, the foam bracket is provided with a second lamp cavity, and a light guide plate is provided in the second lamp cavity.

[0016] Beneficial effects of flexible circuit board layer: Compared with the prior art, the utility model has the following advantages:

[0017] (1) The display module of the utility model has a stable support. In the composite membrane structure, a hardened and thickened support membrane is used. The PET hardened membrane is not easy to bend and has a stable support, which can ensure the flatness of the entire composite membrane structure. During assembly, the composite membrane structure is directly fixed to the bracket, which is convenient for positioning and also convenient for tight connection with the bracket during assembly.

[0018] (2) The display module of the utility model has a stable support. The thickened and hardened support film is combined with the flexible circuit board layer to form a composite film structure as a whole. The flexible circuit board layer itself is very thin and soft, and is fixed on the support film by an adhesive layer to achieve a stable support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of a stable display module structure. Figure 1 ;

[0020] Figure 2 This is a diagram of a stable display module structure. Figure 2 ;

[0021] Figure 3 It is the support for the stable display module explosion Figure 1 ;

[0022] Figure 4 It is the support for the stable display module explosion Figure 2 ;

[0023] Figure 5 It is a composite membrane structure that supports a stable display module. DETAILED DESCRIPTION

[0024] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1-5 As shown, a display module with stable support in this embodiment includes a composite membrane structure 1, a bracket 2 and a PCB board 3 connected in sequence from top to bottom, the composite membrane structure 1 is bonded and fixed on the bracket 2, and the PCB board 3 is fixed under the bracket 2 or clamped in the bracket 2. The improvement focus of this embodiment is on the composite membrane structure, the composite membrane structure 1 includes a support film 11 and a flexible circuit board layer 12, the flexible circuit board layer 12 is fixedly connected to the support film 11, and a light-transmitting pattern area is provided on the support film 11.

[0026] The support film 11 is arranged above the flexible circuit board layer 12, and the two are bonded and fixed by an adhesive layer. The adhesive layer is first coated on the back of the support film 11, and then the flexible circuit board layer 12 is bonded to the back of the support film 11. The adhesive layer should be coated with glue to avoid coating on the pattern area, otherwise it will affect the light transmission and the display of the pattern. Therefore, the adhesive layer is arranged on the periphery of the pattern area.

[0027] The supporting film can be made of transparent PET material, and then colorful patterns and texts are set on the PET material to form a pattern area. When the LED light of the PCB board is turned on, the pattern area lights up.

[0028] The support film 11 can be a hard film made of PC or PET material or a hard film made of other materials, and the material is selected according to needs.

[0029] In this embodiment, the support film 11 is made of PET hard film, and the thickness of the support film 11 is 0.1 mm to 0.5 mm. The PET hard film of this thickness is not easy to bend, and the flatness of the entire composite membrane structure 1 can be ensured. During assembly, the composite membrane structure 1 is directly fixed to the bracket 2, which is convenient for positioning and also convenient for close connection with the bracket 2 during assembly.

[0030] At present, most home appliances such as washing machines and dishwashers use touch buttons to interact with users. Figure 5 As shown, the utility model fixes a flexible circuit board layer 12 on a support film 11, and the flexible circuit board layer 12 includes an insulating layer 121, a silver paste circuit layer 122 and a circuit substrate layer 123 that are composited together, the silver paste circuit layer 122 is located between the insulating layer 121 and the circuit substrate layer 123, and the silver paste circuit layer 122 is provided with a touch sensing button.

[0031] The silver paste circuit layer 122 can also be replaced by an ITO film to play a touch sensing role, and different methods are selected according to the use requirements. ITO film is a transparent conductive film, and ITO (indium tin oxide) is widely used in LCD displays, PDP displays, Touch Panels and other fields.

[0032] The upper surface of the flexible circuit board layer 12 is printed with opaque base color ink, and a translucent pattern layer is arranged at a position corresponding to the pattern area of ​​the support film 11 to facilitate the transmission of LED light.

[0033] like Figure 1-3 As shown, in this embodiment, the bracket 2 can be a plastic bracket 21. The plastic bracket 21 is relatively thick, about 1 cm. The plastic bracket 21 is provided with a first lamp cavity 22. The thickness of the first lamp cavity 22 can meet the travel requirements of the LED light.

[0034] The first lamp cavity 22 is a trumpet-shaped opening, and the LED lamp 31 on the PCB board 3 is located in the first lamp cavity 22. The PCB board 3 is clamped in the plastic bracket 21, and glue is poured on the edge of the plastic bracket 21 to prevent water from entering the circuit board and damaging the circuit board during use of the washing machine or dishwasher.

[0035] like Figure 3 As shown, the plastic support 21 is relatively hard, and after the composite membrane structure 1 adopts a thickened and hardened support membrane 11, gaps are likely to appear in the connection between the plastic support 21 and the composite membrane structure 1. Therefore, a filling layer 4 can be provided. The filling layer 4 can be made of foam. Foam with a thickness of less than 1 mm can fill the gaps, so that the composite membrane structure 1 and the plastic support 21 are tightly connected without gaps.

[0036] like Figure 4 As shown, in addition to the above-mentioned plastic bracket 21, the bracket 2 can also use a foam bracket 23, the thickness of the foam bracket 23 is set to 1.5-2 mm, the foam bracket 23 is provided with a second lamp cavity 24, and a light guide plate 25 is provided in the second lamp cavity 24. At this time, the LED lamp 31 on the PCB board 3 is arranged on the side of the light guide plate 25 to form side light emission, and the light is evenly transmitted through the light guide plate 25. The setting of the light guide plate 25 can make the light of the display light source softer and more evenly distributed.

[0037] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A display module with stable support, Features: The invention comprises a composite membrane structure (1), a bracket (2) and a PCB board (3) which are connected in sequence from top to bottom, wherein the composite membrane structure (1) comprises a support membrane (11) and a flexible circuit board layer (12), wherein the flexible circuit board layer (12) is fixedly connected to the support membrane (11), and a light-transmitting pattern area is arranged on the support membrane (11).

2. The display module with stable support according to claim 1, Features: The support film (11) is a PET hard film, and the thickness of the support film (11) is 0.1 mm to 0.5 mm.

3. The display module with stable support according to claim 1, Features: The support film (11) is arranged above the flexible circuit board layer (12), and the two are bonded and fixed by an adhesive layer.

4. The display module with stable support according to claim 3, Features: The adhesive layer is disposed on the periphery of the pattern area.

5. The display module with stable support according to claim 2, Features: The flexible circuit board layer (12) comprises an insulating layer (121), a silver paste circuit layer (122) and a circuit substrate layer (123), and the silver paste circuit layer (122) is provided with a touch-sensitive key.

6. The display module with stable support according to claim 1, Features: The upper surface of the flexible circuit board layer (12) is printed with opaque base color ink, and a translucent pattern layer is arranged at a position corresponding to the pattern area of ​​the support film (11).

7. The display module with stable support according to claim 1, Features: The support (2) is a plastic support (21), and the plastic support (21) is provided with a first lamp cavity (22).

8. The display module with stable support according to claim 7, Features: The first lamp cavity (22) is a trumpet-shaped opening, and the LED lamp on the PCB board (3) is located in the first lamp cavity (22).

9. The display module with stable support according to claim 7, Features: The PCB board (3) is clamped in the plastic bracket (21), and glue is poured on the edge of the plastic bracket (21).

10. The display module with stable support according to claim 1, Features: The support (2) is a foam support (23), the foam support (23) is provided with a second lamp cavity (24), and a light guide plate (25) is provided in the second lamp cavity (24).

Images