Cambered surface touch control light guide plate display module and household appliance display panel

Abstract

The utility model discloses a cambered surface touch control light guide plate display module and a household appliance display panel, which comprises a membrane, a shading filling layer, a light guide plate, a printed circuit board (PCB) and an arc-shaped support provided with a connecting piece, the PCB is fixedly arranged in the arc-shaped support, the light guide plate, the shading filling layer and the membrane are arranged above the PCB, and the connecting piece is arranged on the light guide plate. The shape of the light guide plate is matched with that of the arc-shaped bracket; the arc-shaped support is detachably connected with the arc-shaped household appliance panel through a connecting piece. In order to adapt to a non-planar household appliance panel, the arc-shaped bracket is adopted, the bracket is integrated or split, the bracket and the circuit board can be fixedly mounted conveniently, and the bracket is formed by plastic injection molding, so that the bracket is stable in supporting and excellent in mechanical property. The support and the circuit board can be fixed through hot melting riveting, and the stability between the circuit board and the support is improved. The cambered surface touch control light guide plate display module is detachably connected with the panel shell of the household appliance and can be repeatedly used, so that the cost is greatly saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of home appliance display screens, and in particular relates to a curved touch light guide plate display module and a home appliance display panel. Background Art

[0002] The applicant disclosed an ultra-thin module display screen in a Chinese utility model patent with application number 2023225289852 and patent name of an ultra-thin module display screen, including a shell and an ultra-thin display module, a through window is opened on the shell, a retaining ring is arranged on the outer periphery of the window on the inner side of the shell, the ultra-thin display module is arranged in the retaining ring, and glue is poured in the retaining ring and on the ultra-thin display module to form a waterproof layer. The utility model directly clamps the ultra-thin display module on the shell, saving the existing glue frame, reducing costs, and reducing the thickness, saving the installation space of home appliances, and improving production efficiency. The ultra-thin display module is fixed in the form of glue pouring, and the glue pouring greatly improves the waterproof effect, especially for home appliances such as washing machines and dishwashers that are easy to get water during use. It can prevent the ultra-thin display module with PCB board from getting water to the greatest extent, reduce the probability of damage to the internal circuit, ensure the touch screen effect, and greatly improve the service life. The ultra-thin display module of this patent is directly set in the panel shell and fixed on the panel shell with glue, which can improve the waterproof effect and save glue frames. However, when the panel shell is scratched and damaged and becomes scrapped, the ultra-thin display module, which is more expensive than the panel shell, cannot be removed from the panel shell intact due to the glue fixation, resulting in waste and increased costs. Summary of the invention

[0003] The technical problem solved by the utility model is to provide a curved touch light guide plate display module and a home appliance display panel.

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

[0005] A curved touch light guide plate display module comprises a diaphragm, a light-shielding filling layer, a light guide plate, a PCB and a curved bracket provided with a connector, wherein the PCB is fixedly arranged in the curved bracket, the light guide plate, the light-shielding filling layer and the diaphragm are arranged above the PCB, and the shape of the light guide plate matches that of the curved bracket; the curved bracket is detachably connected to a curved home appliance panel via a connector.

[0006] Furthermore, the bracket is a split bracket, including a first bracket split and a second bracket split, and the PCB board is arranged between the first bracket split and the second bracket split; the second bracket split is a plane, and the upper surface of the first bracket split is an arc surface.

[0007] Furthermore, the PCB board, the first bracket body and the second bracket body are bonded, riveted or screwed together.

[0008] Furthermore, the bracket is an integrated bracket, and the upper surface of the bracket is arc-shaped.

[0009] Furthermore, the bottom of the integrated bracket is open, and the PCB board is fixed in the integrated bracket from the bottom of the integrated bracket upward.

[0010] Furthermore, a light guide plate located in a light-shielding filling layer is arranged above the PCB board, and a light source located on the side of the light guide plate is arranged on the PCB board; the thickness of the light-shielding filling layer is greater than the thickness of the light guide plate, so that an interference fit is formed between the diaphragm and the light guide plate.

[0011] Furthermore, the light-shielding filling layer is made of a light-proof soft material, and the soft material is foam or rubber.

[0012] Furthermore, the connecting piece is a screw connection or a snap connection.

[0013] Furthermore, glue is poured into the bracket to form a sealing layer.

[0014] A home appliance display screen adopts the above-mentioned curved touch light guide plate display module, and the curved touch light guide plate display module is detachably connected to a panel housing.

[0015] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0016] The utility model provides a curved touch light guide display module and a home appliance display panel.

[0017] (1) The curved touch light guide display module of the utility model adopts a curved bracket to adapt to non-planar home appliance panels. The bracket is an integrated or split type, which is convenient for fixing and installing with the circuit board. The bracket is made of plastic injection molding, has stable support and excellent mechanical properties.

[0018] (2) In the curved touch light guide plate display module of the present invention, the bracket and the circuit board can be fixed by hot-melt riveting to increase the stability between the circuit board and the bracket.

[0019] (3) The curved touch light guide plate display module of the utility model is connected to the panel shell of the home appliance by screws or by snap connections that can be disassembled and reused repeatedly. When the panel shell is damaged during installation on the home appliance, only the panel shell is scrapped, and the internal curved touch light guide plate display module can be disassembled intact and reinstalled into a qualified panel shell. The curved touch light guide plate display module can be reused, which greatly saves costs and solves the pain points in the assembly process.

[0020] (4) The light-shielding filling layer of the utility model is made of a soft light-shielding material with an interference fit. When the curved touch light guide plate display module is installed inside the panel housing of the home appliance, after tightening the screws or fastening the buckles, a soft connection is formed between the curved touch light guide plate display module and the panel housing 7 due to the interference fit light-shielding filling layer, thereby avoiding damage to the PCB board and the panel caused by a rigid connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0022] Figure 2 is a schematic diagram of the back structure of Example 1;

[0023] Figure 3 It is a partial structural schematic diagram of Example 1;

[0024] Figure 4 is an exploded view of Example 1;

[0025] Figure 5 is a schematic diagram of the overall structure of Example 2;

[0026] Figure 6 is a schematic diagram of the back structure of Example 3;

[0027] Figure 7 It is a partial structural schematic diagram of Example 4;

[0028] Figure 8 This is an exploded view of Example 5. DETAILED DESCRIPTION

[0029] 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. Example 1

[0030] like Figure 1-4 As shown, the curved touch light guide plate display module of the present embodiment includes a membrane 1, a light-shielding filling layer 2, a light guide plate 5, a reflective layer (attached to a PCB board 3, not shown in the figure), a PCB board 3 and a curved bracket 4, which are arranged in sequence from top to bottom. The light guide plate 5 is arranged in a through hole opened in the light-shielding filling layer 2, and the shape of the light guide plate 5 matches that of the curved bracket 4; the PCB board 3 is fixedly connected to the bracket 4, and a connector 8 detachably connected to the display screen is arranged on the bracket 4, and the curved bracket 4 is detachably connected to the curved home appliance panel 7 via the connector 8.

[0031] In this embodiment, the bracket 4 is an integrated bracket 43, and the upper surface of the bracket 4 is arc-shaped or has other special shapes. The arc-shaped upper surface is mainly to match the shape of the panel of the home appliance. When the display module is installed in the panel shell of the home appliance, no gap can be generated, otherwise it will affect the touch control effect.

[0032] like Figure 2 and 4 As shown, the bottom of the integrated bracket 43 is open, and the PCB board 3 is fixed in the integrated bracket 43 from the bottom of the integrated bracket 43 upward, which is also called reverse mounting. The PCB board 3 and the integrated bracket 43 can be fixed by bonding, screwing or riveting, and the riveting can be hot-melt riveting. The integrated bracket 43 is a bracket made by mold injection molding. A plastic protrusion 44 can be formed by injection molding on the integrated bracket 43. The protrusion 44 extends from the back of the integrated bracket 43 to the back opening direction. A through hole is set at the position corresponding to the protrusion 44 on the PCB board 3. During installation, the protrusion 44 is inserted into the through hole of the PCB board 3. The length of the protrusion 44 is greater than the thickness of the PCB board 3. After installation, the protruding protrusion 44 is hot-melted and flattened on the back of the PCB board 3, so that the PCB board 3 and the integrated bracket 4 can be riveted and fixed. The setting of the protrusion 44 can not only play a positioning role, but also realize hot-melt riveting fixation, killing two birds with one stone. Adhesion is also a commonly used fixing method, which will not be repeated. After riveting, the protrusion 44 is flattened, but still has a certain thickness. Therefore, a through hole corresponding to the position of the protrusion 44 is provided on the light-shielding filling layer 2 to accommodate the flattened protrusion 44 and prevent the flattened protrusion 44 from squeezing the light-shielding filling layer 2.

[0033] A light guide plate 5 is arranged above the PCB board 3 and is located in the light-shielding filling layer 2. The lower surface (the side close to the PCB board) of the light guide plate 5 is a matte surface, and the upper surface is a smooth surface. A light source 6 is arranged on the PCB board 3 and is located on the side of the light guide plate 5. The light source 6 is a side-emitting LED light source and is located on one side or both sides of the light guide plate 6.

[0034] The light-shielding filling layer 2 is provided with through holes 21 for accommodating the light guide plate 5, and the positions and number of the through holes 21 are determined according to the light guide plate 5. The light-shielding filling layer 2 is made of a soft, light-proof material, and the soft material is black foam or light-shielding soft rubber. The thickness of the light-shielding filling layer 2 is greater than the thickness of the light guide plate 5, so that an interference fit is formed between the diaphragm 1 and the PCB board 3. The upper surface of the light-shielding filling layer 2 is bonded and fixed to the diaphragm 1, and the lower surface of the light-shielding filling layer 2 is bonded and fixed to the integrated bracket 4.

[0035] Therefore, based on the above settings, the light-shielding filling layer 2 of the present embodiment has at least three functions: first, the light-shielding filling layer 2 can block light for the light guide plate 5, so as to effectively prevent the phenomenon of light crosstalk and light leakage between different display areas; second, the light-shielding filling layer 2 can play a positioning role, and accurately fix the position of the light guide plate 5; third, the thickness of the light-shielding filling layer 2 of the present embodiment is greater than the thickness of the light guide plate 5, so that an interference fit is formed between the diaphragm 1 and the light guide plate 5, and the use of soft materials can achieve a soft connection between the diaphragm 1 and the integrated bracket 4, thereby avoiding damage to the integrated bracket 4 or the panel of the home appliance caused by the rigid connection.

[0036] The detachable connection member 8 is a screw connection or a snap connection. When the screw connection is adopted, Figure 2 As shown, a connecting ear 45 integrally formed with the bracket 4 can be provided on the side of the bracket 4, and a screw hole 46 is provided on the connecting ear 45 for fixing the entire display module to the panel housing. The buckle is a removable and reusable buckle.

[0037] During installation, the PCB board 3 is fixed to the integrated bracket 43, the light-shielding filling layer 2 made of foam is bonded to the integrated bracket 4, and then the light guide plate 5 is placed on the display area on the PCB board 3, and then the film 1 is bonded to the upper surface of the foam, and finally glue is poured on the back of the integrated bracket 43 and the back of the PCB board 3 to form a sealing layer 9 to complete the assembly of the entire display module. Example 2

[0038] like Figure 5-8 As shown, the curved touch light guide plate display module of this embodiment includes a membrane 1, a light-shielding filling layer 2, a light guide plate 5, a first bracket split 41, a reflective layer (pasted or painted on the PCB board, not shown in the figure), a PCB board 3 and a second bracket split 42, which are arranged in sequence from top to bottom. The light guide plate 5 is arranged in a through hole opened in the light-shielding filling layer 2, and the shape of the light guide plate 5 matches that of the curved bracket 4; the PCB board 3 is arranged between the first bracket split 41 and the second bracket split 42, and a connector 8 detachably connected to the display screen is arranged on the second bracket split 42, and the second bracket split 42 and other components of the display module are detachably connected to the curved home appliance panel through the connector 8.

[0039] like Figure 5 and 7As shown, in this embodiment, the bracket 4 is a split bracket, including a first bracket split 41 and a second bracket split 42, and the PCB board 3 is arranged between the first bracket split 41 and the second bracket split 42; the second bracket split 42 is a plane, and the upper surface of the first bracket split 41 is an arc surface. The arc or other special shapes, the arc upper surface is mainly to match the shape of the panel of the home appliance. When the display module is installed in the panel housing of the home appliance, no gap can be generated, otherwise the touch control effect will be affected.

[0040] The PCB board 3 is fixed between the first bracket split body 41 and the second bracket split body 42. The installation method of the PCB board 3 is also called front installation. The PCB board 3, the first bracket split body 41 and the second bracket split body 42 are bonded, riveted or screwed. Riveting can be hot-melt riveting. The first bracket split body 41 and the second bracket split body 42 are brackets made by mold injection molding. A plastic protrusion can be formed by injection molding on the second bracket split body 42. The protrusion 44 extends upward on the front of the second bracket split body 42. Through holes are set at positions corresponding to the protrusion 44 on the PCB board 3 and the first bracket split body 41. During installation, the protrusion 44 is inserted into the through hole of the PCB board 3 and the second bracket split body 42. The length of the protrusion 44 is greater than the thickness of the PCB board 3 + the second bracket split body 42. After installation, the protruding protrusion 44 is hot-melted and flattened on the front of the second bracket split body 42, so that the PCB board 3 and the first bracket split body 41 and the second bracket split body 42 can be riveted and fixed. Alternatively, only a through hole for the protrusion 44 to pass through may be provided on the PCB board 3, the protrusion may be hot-melt riveted on the front of the PCB board 3, and then the first bracket body 41 may be bonded to the front of the PCB board 3. The provision of the protrusion 44 may not only play a positioning role, but also achieve hot-melt riveting fixation, killing two birds with one stone. Bonding is also a commonly used fixing method, which will not be described in detail.

[0041] A light guide plate 5 is arranged above the PCB board 3 and is located in the light-shielding filling layer 2. The lower surface (the side close to the PCB board) of the light guide plate 5 is a matte surface, and the upper surface is a smooth surface. A light source 6 is arranged on the PCB board 3 and is located on the side of the light guide plate 5. The light source 6 is a side-emitting LED light source and is located on one side or both sides of the light guide plate 6.

[0042] The light-shielding filling layer 2 is provided with a through hole 21 for accommodating the light guide plate 5, and the position and number of the through hole 21 are determined according to the light guide plate 5. The light-shielding filling layer 2 is made of a soft, light-proof material, and the soft material is black foam or light-shielding soft rubber. The thickness of the light-shielding filling layer 2 is greater than the thickness of the light guide plate 5, so that an interference fit is formed between the diaphragm 1 and the light guide plate 5. The upper surface of the light-shielding filling layer 2 is bonded and fixed to the diaphragm 1, and the lower surface of the light-shielding filling layer 2 is bonded and fixed to the first bracket split 41.

[0043] The thickness of the shading filling layer 2 of this embodiment is greater than the thickness of the light guide plate 5, so that an interference fit is formed between the diaphragm 1 and the integrated bracket 4. The use of soft materials can display a soft connection between the diaphragm 1 and the integrated bracket 4, avoiding damage to the integrated bracket 4 or the panel of the home appliance caused by a rigid connection.

[0044] The detachable connection parts are screw connections or snap connections. When screw connections are used, Figure 2 As shown, a connecting ear 41 integrally formed with the second bracket split body 42 can be provided on the side of the second bracket split body 42, and a screw hole 42 is provided on the connecting ear 41 for fixing the entire display module to the panel housing. The buckle is a removable and reusable buckle.

[0045] During installation, the PCB board 3 is fixed to the first bracket split body 41 and the second bracket split body 42, the foam is bonded to the upper surface of the first bracket split body 41, and then the light guide plate 5 is placed on the display area on the PCB board 3, and then the film 1 is bonded to the upper surface of the foam, and finally glue is poured on the back side of the second bracket split body 42 and the back side of the PCB board 3 to form a sealing layer 9 to complete the assembly of the entire display module.

[0046] A reinforcing rib 44 is provided in the frame of the second bracket body 42. The reinforcing rib 44 can not only increase the firmness of the bracket 4, but also facilitate the uniform distribution of the sealant when the sealant is poured into the second bracket body 42. Example 3

[0047] The present embodiment discloses a display screen for household appliances, which adopts the above-mentioned curved touch light guide plate display module. The curved touch light guide plate display module is detachably connected to the curved panel shell, and is connected by screws or repeatedly detachable and reusable snap-on connections. When the curved touch light guide plate display module is installed inside the panel shell of the household appliance, after tightening the screws or fastening the snaps, a light-shielding filling layer 2 with an interference fit is provided, so that a soft connection is formed between the curved touch light guide plate display module and the panel shell, thereby avoiding damage to the PCB board and the panel shell caused by a rigid connection. Example 4

[0048] This embodiment discloses a home appliance, which adopts the above-mentioned curved touch light guide plate display module or home appliance display screen, and the home appliance includes but is not limited to a washing machine, a refrigerator, a dishwasher, a water purifier (pipeline machine, tea bar machine), a range hood, a water heater, an oven, a sweeper, an air conditioner or other home appliances.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A curved touch light guide plate display module, characterized in that: The invention comprises a diaphragm (1), a light-shielding filling layer (2), a light guide plate (5), a PCB (3), and an arc-shaped bracket (4) provided with a connecting piece (8); the PCB (3) is fixedly arranged in the arc-shaped bracket (4); the light guide plate (5), the light-shielding filling layer (2), and the diaphragm (1) are arranged above the PCB (3); the shape of the light guide plate (5) matches that of the arc-shaped bracket (4); and the arc-shaped bracket (4) is detachably connected to an arc-shaped home appliance panel via the connecting piece (8).

2. The curved touch light guide plate display module according to claim 1, characterized in that: The bracket (4) is a split bracket, comprising a first bracket split (41) and a second bracket split (42), and the PCB board (3) is arranged between the first bracket split (41) and the second bracket split (42); The second bracket body (42) is a plane, and the upper surface of the first bracket body (41) is an arc-shaped surface.

3. The curved touch light guide plate display module according to claim 2, characterized in that: The PCB board (3), the first bracket part (41) and the second bracket part (42) are bonded, riveted or screwed together.

4. The curved touch light guide plate display module according to claim 1, characterized in that: The bracket (4) is an integrated bracket (43), and the upper surface of the bracket (4) is arc-shaped.

5. The curved touch light guide plate display module according to claim 4, characterized in that: The bottom of the integrated bracket (43) is open, and the PCB board (3) is fixed upwards inside the integrated bracket (43) from the bottom of the integrated bracket (43).

6. The curved touch light guide plate display module according to claim 1, characterized in that: A light guide plate (5) located in a light-shielding filling layer (2) is arranged above the PCB board (3), and a light source (6) located on the side of the light guide plate (5) is arranged on the PCB board (3); the thickness of the light-shielding filling layer (2) is greater than the thickness of the light guide plate (5), so that an interference fit is formed between the diaphragm (1) and the light guide plate (5).

7. The curved touch light guide plate display module according to claim 1, 2, 4 or 6, characterized in that: The light-shielding filling layer (2) is made of a light-proof soft material, and the soft material is foam or rubber.

8. The curved touch light guide plate display module according to claim 1, 2, 4 or 6, characterized in that: The connecting piece (8) is a screw connecting piece or a buckle, or a combination of a screw connecting piece and a buckle.

9. The curved touch light guide plate display module according to claim 1, 2, 4 or 6, characterized in that: Glue is poured into the bracket (4) to form a sealing layer (9).

10. A home appliance display panel, characterized in that: The curved touch light guide plate display module according to any one of claims 1 to 9 is adopted, and the curved touch light guide plate display module is detachably connected to the panel housing.

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