A touch control display module, display panel and home appliance

Abstract

The utility model discloses a touch control display module, a display panel and a home appliance, including a color film, a light guide plate and a control circuit board; the light guide plate is arranged in contact with the control circuit board, and an optical reflective film is arranged between the light guide plate and the control circuit board, a conductive layer for sensing human body capacitance is arranged on the control circuit board, and the color film covers the light guide plate. The color film, the light guide plate, the optical reflective film and the control circuit board are combined and arranged in a housing, and are sealed and installed by a sealing layer. The utility model is provided with an optical reflective film to reflect the light of the LED light source from the bottom surface toward the color film, further improving the brightness, and the reflected light enters the light guide plate again, making the light more uniform and soft, and further improving the visual effect after passing through the color film.

Description

Technical Field

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

[0002] The display screens of home appliances in the prior art mostly have a touch-sensitive conductive layer set on a glass panel, and then the glass panel is set on the outside of a circuit board, a light guide plate or a bracket. The glass panel is integrated with the housing of the home appliance, and the volume is large. In addition, the glass panel needs to lead out a wire to connect with the circuit board, which increases the difficulty of production and assembly. Therefore, ultra-thin color films are currently used and composite conductive layers are formed on the color films. The thickness of the color film is only 0.1-0.5mm, which is convenient for connection and assembly with other components such as circuit boards. In order to reduce the thickness of the display screen, a side-emitting light source and a light guide plate can also be used to make the light source uniform. However, the light guide plate is processed using optical principles. However, it is found during use that since the light guide plate is translucent, the direction of light irradiation is not only the direction of the film or glass panel, but also scattered toward the back, that is, the direction of the circuit board, which reduces the brightness of the light source to a certain extent. In addition, the light blocking form of the light guide plate is single and cannot meet all display requirements. Utility Model Content

[0003] Technical problem solved by the utility model: The utility model provides an ultra-thin, uniformly luminous touch control display module, a display panel with good sealing effect and stable working state, and also provides a home appliance.

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

[0005] A touch control display module comprises a color film, a light guide plate, a control circuit board and a housing;

[0006] The light guide plate is arranged in contact with the control circuit board, and an optical reflective film is arranged between the light guide plate and the control circuit board;

[0007] A graphic layer for displaying patterns and characters is arranged on the color film, and the color film covers the light guide plate.

[0008] Furthermore, the base film of the color film is made of PET or PC film, a graphic layer printed on the PET or PC film is provided, or the PET or PC film is directly a color film with patterns and texts.

[0009] Furthermore, the conductive layer on the control circuit board is a copper foil or other conductive material etched or attached to the control circuit board.

[0010] Furthermore, the optical reflective film is arranged on the control circuit board or on the back of the light guide plate.

[0011] Furthermore, an LED light source located on the side of the light guide plate is arranged on the control circuit board, and the LED light source adopts side light emission.

[0012] Furthermore, at least one light guide plate is provided, and it can be provided in an integral manner or in a discrete manner according to the needs of the touch display area.

[0013] Furthermore, a light-proof light-blocking component is arranged outside the light guide plate, and the light-blocking component blocks light in the touch control area from leaking out.

[0014] Furthermore, the light blocking component is a groove opened on the light guide plate, or the light blocking component is a light blocking coating coated on the side of the light guide plate, or the light blocking component is a light blocking bracket arranged on the periphery of the light guide plate.

[0015] Furthermore, the light-blocking bracket is light-blocking foam or other light-blocking materials.

[0016] A display panel, wherein the color film, light guide plate, optical reflective film, and control circuit board are assembled and arranged in a housing, and sealed and installed through a sealing layer, and a panel close to the color film is arranged on the front of the housing, and the panel is a glass panel, an acrylic panel, or an in-film injection molding panel. The preset distance threshold between the control circuit board of the touch display control component and the panel ranges from 1 mm to 15 mm.

[0017] A household appliance adopts the above touch control display module, and the household 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 household appliances.

[0018] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0019] (1) The color film has rich colors and patterns, and can be made directly into color without additional color coating. The color is diverse and the display effect is good; it can fit the external panel tightly and the touch is stable.

[0020] (2) The utility model sets an optical reflective film between the control circuit board and the light guide plate to reflect the light of the LED light source from the bottom surface toward the color film, further improving the brightness. The reflected light enters the light guide plate again, making the light more uniform and softer. After passing through the touch-sensitive color film, the visual effect is further improved.

[0021] (3) The touch control display module of the utility model is embedded in the shell, and a panel is arranged on the outermost layer. The shell is sealed with glue to improve the waterproof effect. In the household appliances used near water, the service life of the display screen is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of Example 1;

[0023] Figure 2 is a schematic structural diagram of a light guide plate of Example 2;

[0024] Figure 3 is a schematic structural diagram of a light guide plate of Example 3;

[0025] Figure 4 is a schematic structural diagram of a light guide plate of Embodiment 4;

[0026] Figure 5 is a schematic structural diagram of a light guide plate of Example 5;

[0027] Figure 6 It is a schematic diagram of the structure of the display panel after it has been glued and installed. DETAILED DESCRIPTION

[0028] 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.

[0029] Example 1

[0030] like Figure 1 As shown, this embodiment discloses a touch control display module, including a color film 2, a light guide plate 3, a control circuit board 5, a light blocking component, and an LED light source.

[0031] The light guide plate 3 is arranged in contact with the control circuit board 5 , and an optical reflective film 4 is arranged between the light guide plate 3 and the control circuit board 5 ; the color film 2 covers the light guide plate 3 , and a light blocking component is also arranged between the light guide plates 3 .

[0032] A conductive layer for sensing human body capacitance is provided on the control circuit board 5:

[0033] One way is to set a conductive layer for sensing human body capacitance on the control circuit board, in which case the color film is a common film, and no conductive layer is set on the color film. The conductive layer on the control circuit board is copper foil or other conductive materials etched or attached to the control circuit board.

[0034] When the human body triggers the conductive layer of the control circuit board 5, a signal is transmitted between the conductive layer and the processor of the control circuit board 5, and the processor of the control circuit board 5 identifies the touch position, thereby triggering the function corresponding to the corresponding touch button.

[0035] An LED light source 9 is arranged on the control circuit board 5 and is located on the side of the light guide plate 3. The LED light source 9 is side-emitting. The LED light source 9 is controlled by the processor of the control circuit board 5 to light up, turn off or flash. When a human body touches the upper touch button area of ​​the color film 2, the LED light source 9 in this area lights up or flashes.

[0036] The color film 2 has a thickness of only 0.1 mm to 0.5 mm. The base film of the color film 2 can be a PET or PC film, on which a graphic layer is arranged and printed.

[0037] The optical reflective film 4 is pasted on the control circuit board 5 or coated on the upper surface of the control circuit board 5 with reflective paint to form the optical reflective film 4, or the optical reflective film 4 can be pasted on the back of the light guide plate 3 or coated on the back of the light guide plate 3 with reflective paint to form the optical reflective film 4. The area where the optical reflective film 4 is set is the same as the area where the light guide plate 5 is set.

[0038] At least one light guide plate 3 is provided, and one whole piece or multiple pieces are provided separately, and the number and position are arranged according to the needs of the touch display area. The thickness of the light guide plate 3 is 1mm to 15mm, preferably 1mm to 3mm, and a 1.5mm thick light guide plate is used in this embodiment.

[0039] Example 2

[0040] Embodiment 2 includes the contents of embodiment 1, such as Figure 2 As shown, in this embodiment, the light guide plate 3 is arranged as a whole piece, and an opaque foam or an opaque light blocking bracket 8 can be arranged on the periphery of the whole piece of light guide plate 3 to block light ( Figure 2 Not shown, refer to Figure 1 ), the light blocking component blocks the light leakage from the touch control area.

[0041] If multiple display areas are required, a groove 10 is opened on the back of the light guide plate 3. The groove 10 can be used to divide the multiple display areas and block light. The groove 10 can also be coated with an opaque material, such as black ink, to further improve the light blocking effect.

[0042] The outer opaque foam or the opaque plastic light-blocking bracket 8 not only plays a light-blocking role, but also facilitates the pasting and fixing of the color film 2.

[0043] Example 3

[0044] Embodiment 3 includes the contents of Embodiment 1, but is different from Embodiments 1 and 2 in that Figure 3As shown, the light guide plates 3 of the third embodiment are arranged as multiple discrete pieces, which can meet the requirements of the distributed arrangement of the touch keys, and can also meet the requirements of the centralized arrangement of the touch keys. When the centralized arrangement is adopted, the light guide plates 3 can be closely fitted, and the light blocking member of the discrete light guide plates 3 can be a light blocking bracket 8 arranged on the periphery of the light guide plates 3 (refer to Figure 1 ).

[0045] Alternatively, the light blocking member is a light blocking coating applied to the side of the light guide plate 3, and the side of the light blocking coating is arranged away from the light source side. The light blocking coating can be coated on the side of the light guide plate with a material that is not light-repellent, such as black ink.

[0046] Example 4

[0047] like Figure 4 As shown, this embodiment discloses a display panel. This embodiment 1 includes the contents of embodiment 1 or 2 or 3. The difference from embodiment 1 or 2 or 3 is that in addition to the color film 2, the light guide plate 3, the optical reflective film 4, the light blocking member and the control circuit board 5, this embodiment also has a panel 1 and a housing 7. The color film 2, the light guide plate 3, the optical reflective film 4, the light blocking member and the control circuit board 5 are assembled to form a display module with complete functions integrating touch, control and display. In this embodiment, the above-mentioned display module is arranged in the housing 7, and the upper surface of the housing 7 is provided with a panel 1, and the panel 1 is arranged close to the color film 2 without leaving a gap to avoid affecting the touch effect. The panel 1 can cover the entire upper surface of the housing 1, or it can be set as a part of the upper surface of the housing 1 as needed. The housing 7 generally adopts a plastic housing, and the size is set according to the needs of each home appliance. The panel 1 adopts a glass panel, an acrylic panel, or a panel made of materials such as ABS, PC, etc. using an in-film injection molding process. The panel 1 plays the role of protection and packaging. The preset distance threshold between the control circuit board 5 of the touch display control assembly and the panel 1 ranges from 1 mm to 15 mm. The utility model can still achieve high-sensitivity touch and sensing within this distance.

[0048] Example 5

[0049] like Figure 5 As shown, this embodiment discloses a display panel with good sealing effect. This embodiment includes the content of embodiment 4. The difference from embodiment 4 is that this embodiment is provided with a sealing layer 6 on the basis of embodiment 4, and the display module 7 is embedded in the housing 7. It can be snap-fitted in the housing 7, and the back and sides of the control circuit board are sealed with glue, which can achieve good waterproof and fixing effects. The sealant can be polyurethane sealant or other sealants such as silicone. The specific setting method can refer to the patent "Ultra-thin module display screen" applied by the applicant in the early stage.

[0050] Example 6

[0051] This embodiment discloses a home appliance, which adopts the above-mentioned touch control display module or control panel. 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.

[0052] 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 touch control display module, characterized in that: It comprises a color film (2), a light guide plate (3) and a control circuit board (5); The light guide plate (3) is arranged in contact with the control circuit board (5), and an optical reflective film (4) is arranged between the light guide plate (3) and the control circuit board (5); A conductive layer for sensing human body capacitance is provided on the control circuit board (5), a graphic layer for displaying pattern text is provided on the color film (2), and the color film (2) covers the light guide plate (3).

2. The touch control display module according to claim 1, characterized in that: The base film of the color film (2) is made of PET or PC film, and a layer with printed graphics and text is arranged on the PET or PC film, or the PET or PC film is directly a color film with graphics and text.

3. The touch control display module according to claim 1 or 2, characterized in that: The conductive layer on the control circuit board (5) is a conductive material etched or attached to the control circuit board (5).

4. The touch control display module according to claim 1, characterized in that: The optical reflective film (4) is arranged on the control circuit board (5) or on the back side of the light guide plate (3).

5. The touch control display module according to claim 1, characterized in that: An LED light source (9) located on the side of the light guide plate (3) is arranged on the control circuit board (5), and the LED light source (9) adopts a side-lighting form.

6. The touch control display module according to claim 1, characterized in that: At least one light guide plate (3) is provided, and it is provided in an integral manner or in a discrete manner according to the needs of the touch display area.

7. The touch control display module according to claim 1, characterized in that: An opaque light-blocking component is arranged outside the light guide plate (3), and the light-blocking component blocks light in the touch control area from leaking out.

8. The touch control display module according to claim 7, characterized in that: The light-blocking component is a groove (10) provided on the light guide plate (3), or the light-blocking component is a light-blocking coating applied on the side of the light guide plate (3), or the light-blocking component is a light-blocking bracket (8) provided on the periphery of the light guide plate (3).

9. A display panel, comprising the touch control display module according to any one of claims 1 to 8, wherein the color film (2), the light guide plate (3), the optical reflective film (4), and the control circuit board (5) are combined and arranged in a housing (7), and sealed and installed via a sealing layer (6); A panel (1) in close contact with the color film (2) is arranged on the front of the housing (7), and the panel (1) is a glass panel or an acrylic panel; The preset distance threshold between the control circuit board (5) of the touch display control component and the panel (1) has a value range of 1 mm to 15 mm.

10. A household appliance, characterized in that: Using the touch control display module described in any one of claims 1 to 8, the household appliance includes a washing machine, a refrigerator, a dishwasher, a water purifier, a range hood, a water heater, an oven, a sweeper or an air conditioner.

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