Display panel and electric appliance

Abstract

The embodiment of the utility model discloses a display panel and an electric appliance. A printed circuit board comprises a first preset number of non-contact function buttons and LED side light-emitting circuits corresponding to the first preset number of non-contact function buttons. The LED side light-emitting circuit comprises a triode and a second preset number of light-emitting diodes; the second preset number of light emitting diodes are connected in parallel and are connected in series with the triode; the LED side light-emitting circuits corresponding to the LED side light-emitting circuits are arranged on one side of the first preset number of non-contact function buttons. The LED side light-emitting circuit is used for replacing a traditional front light-emitting LED lamp, the problem that the LED lamp cannot be placed in a touch key area under some special conditions is solved, the height of the display panel is reduced, and the installation space of the whole machine structure is saved.

Description

Technical Field

[0001] The present invention relates to the field of electrical display panels, and particularly to a display panel and an electrical appliance. Background Art

[0002] A display panel is a necessary component for modern electrical appliances to achieve the human-machine interaction function. In the prior art, the human-machine interaction function of the display panel is usually realized by button touch and button icons. Specifically, positive-emitting LEDs are added to the circuit board to irradiate the touch panel with patterns of the product. However, this method results in a relatively high thickness of the printed circuit board, which is extremely demanding on the installation space of the whole machine. Moreover, in some touch technologies, it is not suitable to place any traces and electrical components in the touch button area. Therefore, how to reduce the installation height of the display panel while illuminating the button icons has become an urgent problem to be solved. Utility Model Content

[0003] To solve this technical problem, the technical solutions provided in this application are as follows:

[0004] On the one hand, the present utility model provides a display panel, which includes a printed circuit board. The printed circuit board includes a first preset number of non-contact function buttons and LED side-lighting circuits corresponding to the first preset number of non-contact function buttons respectively; the LED side-lighting circuit includes a triode and a second preset number of light-emitting diodes;

[0005] The second preset number of light-emitting diodes are connected in parallel, and the second preset number of light-emitting diodes are connected in series with the triode; the corresponding LED side-lighting circuits are arranged on one side or multiple sides of the first preset number of non-contact function buttons.

[0006] In some possible implementation manners, the display panel further includes a reflection cavity plastic shell and a color film layer. The color film layer is arranged on the surface of the printed circuit board, and the reflection cavity plastic shell is arranged between the color film layer and the printed circuit board;

[0007] The height of the reflection cavity plastic shell is less than or equal to the induction distance of the non-contact function button.

[0008] In some possible implementation manners, the color film layer further includes a non-contact function button area, and the non-contact function button area includes a first preset number of icons. The positions of the first preset number of icons match the positions of the first preset number of non-contact function buttons.

[0009] In some possible implementation manners, the reflection cavity plastic shell is provided with accommodation cavities corresponding to the first preset number of non-contact function buttons one by one.

[0010] In some possible embodiments, a light guide plate is disposed in the accommodation cavity, and the shape of the light guide plate is consistent with the shape of the icon.

[0011] In some possible embodiments, the shape of the light guide plate is consistent with the accommodation cavity, and a light guide channel is disposed on the light guide plate.

[0012] In some possible embodiments, a reflective film is disposed on the surface of the printed circuit board close to the light guide plate.

[0013] In some possible embodiments, the printed circuit board further includes a main control chip, and the main control chip is electrically connected to the respective corresponding LED side-emitting circuits and the first preset number of non-contact function buttons.

[0014] In some possible embodiments, the printed circuit board further includes a touch chip, and the touch chip is electrically connected to the first preset number of non-contact function buttons and the main control chip respectively.

[0015] On the other hand, the present application also provides an electrical appliance, including the above display panel.

[0016] Adopting the above technical solutions provided by the present application, the following beneficial effects are achieved:

[0017] The embodiment of the utility model discloses a display panel. The printed circuit board includes a first preset number of non-contact function buttons and LED side-emitting circuits respectively corresponding to the first preset number of non-contact function buttons; the LED side-emitting circuit includes a triode and a second preset number of light-emitting diodes; the second preset number of light-emitting diodes are connected in parallel, and the second preset number of light-emitting diodes are connected in series with the triode; the respective corresponding LED side-emitting circuits are disposed on one side of the first preset number of non-contact function buttons. The utility model solves the problem that the LED lamp cannot be placed in the touch key area in some special cases by using the LED side-emitting circuit instead of the traditional positive-emitting LED lamp, reduces the height of the display panel, saves the installation space of the whole machine structure, and improves the heat dissipation performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present utility model;

[0020] Figure 2 is the circuit diagram of an LED side - emitting circuit provided by an embodiment of the present utility model;

[0021] Figure 3 are the three - view drawings of a reflective cavity plastic shell provided by an embodiment of the present utility model;

[0022] Figure 4 is the structural schematic diagram of a light guide plate provided by an embodiment of the present utility model;

[0023] Figure 5 is the circuit structural schematic diagram of a display panel provided by an embodiment of the present utility model

[0024] Among them, the corresponding reference numerals in the figures are as follows:

[0025] 1 - Printed circuit board; 11 - Non - contact function button; 12 - LED side - emitting circuit; 13 - Main control chip; 14 - Touch chip;

[0026] 2 - Reflective cavity plastic shell; 21 - Accommodating cavity; 22 - Light guide plate; 221 - Light guide channel

[0027] 3 - Color film layer; 31 - Non - contact function button area; 311 - Icon. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0029] As used herein, the term "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, terms such as "first" and "second" are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0030] When a numerical range is disclosed herein, the above range is considered continuous and includes the minimum and maximum values of the range, as well as each value therebetween. Further, when the range refers to integers, each integer between the minimum and maximum values of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all sub-ranges subsumed therein. For example, a specified range from "1 to 10" should be considered to include any and all sub-ranges between the minimum value 1 and the maximum value 10. Exemplary sub-ranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0031] On the one hand, an embodiment of the present application provides a display panel, such as Figure 1 shown, the display panel includes a printed circuit board 1, the printed circuit board 1 includes a first preset number of non-contact function buttons 11 and LED side-lighting circuits 12 corresponding to each of the first preset number of non-contact function buttons 11; the LED side-lighting circuits 12 include triodes and a second preset number of light-emitting diodes; the second preset number of light-emitting diodes are connected in parallel, and the second preset number of light-emitting diodes are connected in series with the triodes; the corresponding LED side-lighting circuits 12 are disposed on one side or multiple sides of the first preset number of non-contact function buttons 11.

[0032] Exemplarily, as Figure 1As shown in the figure, the display panel includes a printed circuit board 1, on which there are a first preset number of non-contact function buttons 11. The non-contact function buttons 11 represent the cancellation of the traditional touch medium, but realize the human-computer interaction function through contact with the display panel, which is a new type of touch technology. To ensure the response effect of the non-contact function buttons 11 and prevent signal interference, there should be no components (including LEDs) and other traces within 1 mm of the non-contact function buttons 11 themselves and their surroundings. To realize the normal implementation of the above human-computer interaction function, an LED side-emitting circuit 12 is used instead of the traditional front-emitting LED lamp. Each non-contact function button 11 corresponds to a separate LED side-emitting circuit 12, and the number of separate LED side-emitting circuits 12 corresponding to each non-contact function button 11 is not limited to 1 and can be multiple. In the design of the PCB board, the LED side-emitting circuit 12 is placed on one side or multiple sides of the corresponding non-contact function button 11. The non-contact function buttons 11 correspond to different electrical functions respectively.

[0033] It should be noted that the non-contact function button 11 here does not mean that the user's finger or other parts do not contact the non-contact function button 11 for response, but rather means the cancellation of the touch medium, which is a non-contact response technology. The user's finger may still contact the display panel. The specific response methods include but are not limited to judging capacitance for response, infrared induction response, etc.

[0034] The LED side-emitting lamp is a lighting device that uses light-emitting diodes (LEDs) as the light source. Its characteristic is that the light-emitting body is located on the side of the lamp, rather than the traditional top or bottom emission. Selecting this emission method endows the color film switch control panel with characteristics such as uniform lighting, space saving, and heat dissipation performance.

[0035] The reasons why using the LED side-emitting circuit 12 helps to improve the heat dissipation performance of the color film switch panel are as follows: First, the LED side-emitting circuit 12 is on the side of the non-contact function button 11, avoiding the direct irradiation of the lamp on the non-contact function button 11. This layout helps to distribute heat more evenly and reduce the formation of local hot spots; Second, the light source distribution of the LED side-emitting circuit 12 is relatively uniform, reducing the local overheating problem caused by the concentration of the light source; Third, the density of the LED lamp beads in the LED side-emitting circuit 12 is relatively low, which can reduce the heat generated per unit area, thereby reducing the heat density and making it easier for heat to dissipate. This helps to avoid local overheating and improve the overall heat dissipation performance.

[0036] Optionally, the LED side-emitting circuit 12 is placed on one side of the corresponding non-contact function button 11. The side can be any position among the upper, lower, left, and right of the non-contact function button 11. The specific situation depends on the layout of the printed circuit board 1 (PCB) of the actual electrical appliance and the product appearance interface (UI) design of the specific product.

[0037] Optionally, the non-contact function button 11 includes but is not limited to a lighting key, a disassembly and cleaning key, a power-on / off key, an automatic key, a strong / weak key, etc.

[0038] As Figure 2 shown, the LED side-emitting circuit 12 includes a triode and a second preset number of light-emitting diodes. The second preset number of light-emitting diodes are connected in parallel with each other to enable other LED lights to still emit light normally when one LED light is damaged. The second preset number of light-emitting diodes are connected in series with the triode.

[0039] Optionally, the LED side-emitting circuit 12 further includes a plurality of resistors. The functions of the resistors include but are not limited to current limiting, voltage division, etc.

[0040] As Figure 2 shown, taking the LED side-emitting circuit 12 corresponding to the lighting key as an example, the side-emitting circuit is specifically described. P50 represents the component installation position and is also the signal input terminal. When the LED side-emitting circuit 12 needs to emit light, the current signal enters from the resistor R701. Part of the current flows to the ground after passing through the resistor R707, and part of the current controls the triode Q701 to conduct. After the triode Q701 conducts, it controls the four parallel-connected light-emitting diodes L1, L2, L3, and L4 to conduct, and the LED lights are lit. Then the current flows out of the LED light side-emitting circuit after passing through the resistor R713, and the voltage on the other side of the resistor R713 is 5V. The principles of other side-emitting circuits are similar and will not be described here.

[0041] An embodiment of the present invention discloses a display panel. The printed circuit board 1 includes a first preset number of non-contact function buttons 11 and LED side-emitting circuits 12 corresponding to each of the first preset number of non-contact function buttons 11; the LED side-emitting circuit 12 includes a triode and a second preset number of light-emitting diodes; the second preset number of light-emitting diodes are connected in parallel, and the second preset number of light-emitting diodes are connected in series with the triode; the corresponding LED side-emitting circuits 12 are arranged on one side of the first preset number of non-contact function buttons 11. The present invention replaces the traditional front-emitting LED lights with the LED side-emitting circuit 12, solves the problem that LED lights cannot be placed in the touch button area in some special cases, reduces the height of the display panel, saves the installation space of the whole machine structure, and improves the heat dissipation performance of the display panel.

[0042] As an optional embodiment, the display panel further includes a reflective cavity plastic housing 2 and a color filter layer 3. The color filter layer 3 is disposed on the surface of the printed circuit board 1, and the reflective cavity plastic housing 2 is disposed between the color filter layer 3 and the printed circuit board 1; the height of the reflective cavity plastic housing 2 is less than or equal to the sensing distance of the non-contact function button 11.

[0043] Exemplarily, as Figure 1 and Figure 3 shown, the display panel further includes a reflective cavity plastic housing 2 and a color filter layer 3. The color filter layer 3 is disposed on the surface of the printed circuit board 1, that is, above the printed circuit board 1. The color filter layer 3 refers to a special thin film material that can endow rich color and pattern effects. At the same time, in order to improve the light-emitting effect of the LED side-emitting circuit 12, a reflective cavity plastic housing 2 is disposed above the printed circuit board 1, and the reflective cavity plastic housing 2 is used to wrap the color filter layer 3 and the printed circuit board 1 together.

[0044] The purpose that the height of the reflective cavity plastic housing 2 is less than or equal to the sensing distance of the non-contact function button 11 is to better respond to the touch signal. When the user's finger touches or does not touch the color filter layer 3 of the display panel, that is, reaches the preset response distance, the signal can quickly reach the relevant control center on the PCB board.

[0045] Optionally, the height of the reflective cavity plastic housing 2 is preferably 3 mm.

[0046] Optionally, the reflective cavity plastic housing 2 further includes other accommodation cavities 21 for accommodating components on the printed circuit board 1, such as an accommodation cavity 21 for accommodating the non-contact function button 1121.

[0047] As an optional embodiment, the color filter layer 3 further includes a non-contact function button area 31. The non-contact function button area 31 includes a first preset number of icons 311, and the positions of the first preset number of icons 311 match the positions of the first preset number of non-contact function buttons 11.

[0048] Exemplarily, as Figure 1 shown, the color filter layer 3 includes a non-contact function button area 31. A first preset number of icons 311 are disposed in the non-contact function button area 31. The icons 311 are used to display different functions of the applied electrical appliance. Therefore, the positions of the first preset number of icons 311 match the positions of the preset number of non-contact function buttons 11, that is, the first preset number of icons 311 are disposed directly above the first preset number of non-contact function buttons 11.

[0049] In the embodiment of the present application, by providing an icon 311 corresponding to the non-contact function button area 31 on the color film layer 3, the light emitted by the side light-emitting circuit illuminates the function that the user wants to select from the front, thereby realizing the function of using the side light-emitting circuit instead of the front light-emitting circuit to achieve the normal function response of the display panel and then the display function, thus laying the foundation for solving the problem that components cannot be arranged around the display panel after canceling the touch medium, and realizing the reduction of the front height of the printed circuit board 1.

[0050] As an optional embodiment, accommodation cavities 21 corresponding one-to-one to the first preset number of non-contact function buttons 11 are provided on the reflective cavity plastic case 2.

[0051] As an optional embodiment, a light guide plate 22 is provided in the accommodation cavity 21, and the shape of the light guide plate 22 is the same as the shape of the icon 311.

[0052] As an optional embodiment, the shape of the light guide plate 22 is the same as that of the accommodation cavity 21, and a light guide channel 221 is provided on the light guide plate 22.

[0053] Exemplarily, the reflective cavity plastic case 2 wraps the electrical components on the PCB board, especially surrounds the LED side light-emitting circuit 12, that is, accommodation cavities 21 corresponding one-to-one to the first preset number of non-contact function buttons 11 are provided on the reflective cavity plastic case 2, so as to enhance the luminous brightness.

[0054] Such as Figure 3 and Figure 4 As shown, in order to achieve light emission in the direction of 90° of the vertical light source (i.e., directly above the PCB), the light guide plate 22 is required. The LED light source is incident on the light guide plate 22 from the side and then emits light from the front surface of the light guide plate 22. The light guide plate 22 is specifically arranged in the accommodation cavity 21 corresponding one-to-one to the first preset number of non-contact function buttons 11 on the reflective cavity plastic case 2, and the shape of the light guide plate 22 is exactly the same as the shape of the icon 311.

[0055] Optionally, the function that the shape of the light guide plate 22 is exactly the same as the shape of the icon 311 includes but is not limited to ensuring that the light is evenly distributed on the icon, avoiding uneven brightness or shadows; ensuring that the light is evenly distributed on the icon, avoiding uneven brightness or shadows; providing a more beautiful lighting effect, making the icon look more delicate and professional, etc.

[0056] In some embodiments, in order to make the wrapping effect of the reflective cavity plastic case 2 optimal and avoid unnecessary heat dissipation and reflection of light in the accommodation cavity 21, the shape of the light guide plate 22 is the same as that of the accommodation cavity 21.

[0057] Optionally, the size of the light guide plate 22 can be the same as the size of the accommodation cavity 21 and the size of the icon 311.

[0058] In order to make the luminous brightness sufficient and uniform, a light guide channel 221 is provided on the surface of the light guide plate 22 to enhance the reflection of light from the bottom surface of the light guide plate 22 to the front surface and emit it, so that uniform light can be emitted from the front surface, and the uniform light will be transmitted to the color film layer 3.

[0059] As Figure 4 shown, a light guide channel 221 is also provided on the light guide plate 22, and the light guide channel 221 makes the luminous brightness on the front surface of the light guide plate 22 sufficient and uniform.

[0060] Optionally, as Figure 4 shown, the light guide channel 221 can be designed as a dot pattern to enhance the reflection of the light source from the bottom surface to the color film layer 3 and emit it, so that the color film layer 3 emits uniform light.

[0061] Optionally, the material of the light guide plate 22 includes but is not limited to optical grade acrylic (PMMA) and polycarbonate (PC).

[0062] Through the above structure, it is realized that the light source emitted by the side-emitting lamp group will enter the light guide plate 22 from the side, that is, parallel or nearly parallel to the color film layer 3 and the printed circuit board 1. The light guide plate 22 will refract the light source and make the light source enter the color film layer 3 from the front. The light guide channel 221 makes the light emission more uniform and the brightness sufficient.

[0063] It should be noted that Figure 3 and Figure 4 The dimensions are only examples. In actual applications, they are determined according to actual needs. The installation structure between the reflective cavity plastic shell and the color film layer in the figure is a movable installation, which can be a snap structure or others, and is not limited in the present invention. The present invention does not limit the specific angle of the above-mentioned near parallel. As long as it is ensured that the light source emitted by the LED side-emitting lamp group enters between the color film layer and the printed circuit board 1 from the side, the light source can be guided to emit light from the front through the light guide plate.

[0064] In the embodiment of the present application, by providing the reflective cavity plastic shell 2 and the color film layer 3, providing an accommodation cavity 21 for accommodating the non-contact function button 11 in the reflective cavity plastic shell 2, providing a light guide plate 22 in the accommodation cavity 21, and providing a light guide channel 221 on the light guide plate 22, through these structures, the light parallel or nearly parallel to the color film layer 3 emitted by the side-emitting lamp group is reflected into the light perpendicular to the color film layer 3, so that the icon 311 corresponding to the color film layer 3 is illuminated, and by providing the light guide channel 221 on the light guide plate 22, the emitted light source has uniform brightness and enhanced luminous brightness, solving the problem that components cannot be arranged around the display panel after the touch medium is cancelled, and realizing the reduction of the front height of the printed circuit board 1.

[0065] As an optional embodiment, a reflective film is disposed on the surface of the printed circuit board 1 close to the light guide plate 22.

[0066] Exemplarily, as Figure 1 shown, a reflective film is further disposed on the surface of the printed circuit board 1. The reflective film is disposed on one side close to the light guide plate 22. The light-emitting film causes the light passing through the light guide channels 221 on the light guide plate 22 to be re-emitted or refracted onto the printed circuit board 1, so as to enhance the light-emitting brightness.

[0067] In the embodiment of the present application, by disposing a reflective film on the surface of the printed circuit board 1, the light-emitting brightness of the LED side-emitting circuit 12 is further enhanced, so that the brightness of the emitted light source is uniform and the light-emitting brightness is enhanced, solving the problem that components cannot be disposed around the display panel after the touch medium is cancelled, and realizing the reduction of the front height of the display panel.

[0068] As an optional embodiment, the printed circuit board 1 further includes a touch chip 14, and the touch chip 14 is electrically connected to the first preset number of non-contact function buttons 11 and the main control chip 13 respectively.

[0069] Exemplarily, as Figure 5 shown, the touch chip 14 is configured to obtain the signal that the non-contact function button 11 is touched, and transmit the signal to the main control chip 13. The main control signal determines whether the corresponding function button makes a response based on this signal.

[0070] As an optional embodiment, the printed circuit board 1 further includes a main control chip 13, and the main control chip 13 is electrically connected to the respective corresponding LED side-emitting circuits 12 and the first preset number of non-contact function buttons 11 respectively.

[0071] Exemplarily, as Figure 5 shown, a main control chip 13 and a touch chip 14 are provided. The main control chip 13 is electrically connected to the touch chip 14 and the respective corresponding LED side-emitting circuits 12 respectively. After obtaining the touch signal sent by the touch chip 14, the main control chip 13 transmits the information to the LED side-emitting circuit 12 corresponding to the signal, and controls the corresponding LED side-emitting circuit 12 to start.

[0072] In the above electrical connection, the electrical connection between the touch chip 14 and the main control chip 13 is realized through a wire; while the connection between the touch chip 14 and the non-contact function button 11 is not realized through a wire connection, but through a pin TK. The pin TK can ensure that there are no components (including LEDs) and other traces within 1 mm of the non-contact function button 11 itself and its surroundings.

[0073] In the embodiment of the present application, the main control chip 13 acquires the touch signal and transmits it to the corresponding LED side-emitting circuit 12, controls the LED side-emitting circuit 12 and its corresponding functional response. Through the above circuit structure, the problem that components cannot be arranged around the color film switch panel after the touch medium is cancelled is solved, and the front height of the printed circuit board 1 is reduced.

[0074] On the other hand, the embodiment of the present utility model provides an electrical appliance, including the above display panel.

[0075] In the embodiment of the present application, the electrical appliance includes but is not limited to range hoods, steam ovens, refrigerators, dishwashers, etc.

[0076] After the present utility model adopts the above LED side-emitting circuit and non-contact function button, the LED side-emitting circuit replaces the traditional front-emitting LED lamp, solves the problem that LED lamps cannot be placed in the touch button area under certain special circumstances, reduces the height of the display panel, and saves the installation space of the whole machine structure.

[0077] The above are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that, The display panel includes a printed circuit board (1), and the printed circuit board (1) includes a first preset number of non-contact function buttons (11) and LED side-lighting circuits (12) corresponding to the first preset number of non-contact function buttons (11) respectively; the LED side-lighting circuit (12) includes a triode and a second preset number of light-emitting diodes; The second preset number of light-emitting diodes are connected in parallel, and the second preset number of light-emitting diodes are connected in series with the triode; the corresponding LED side-lighting circuits (12) are arranged on one side or multiple sides of the first preset number of non-contact function buttons (11).

2. The display panel according to claim 1, wherein The display panel further includes a reflective cavity plastic shell (2) and a color film layer (3), the color film layer (3) is arranged on the surface of the printed circuit board (1), and the reflective cavity plastic shell (2) is arranged between the color film layer (3) and the printed circuit board (1); The height of the reflective cavity plastic shell (2) is less than or equal to the sensing distance of the non-contact function button (11).

3. The display panel according to claim 2, wherein The color film layer (3) further includes a non-contact function button area (31), the non-contact function button area (31) includes a first preset number of icons (311), and the positions of the first preset number of icons (311) match the positions of the first preset number of non-contact function buttons (11).

4. The display panel according to claim 3, wherein The reflective cavity plastic shell (2) is provided with accommodation cavities (21) corresponding to the first preset number of non-contact function buttons (11) one by one.

5. The display panel according to claim 4, wherein A light guide plate (22) is arranged in the accommodation cavity (21), and the shape of the light guide plate (22) is the same as the shape of the icon (311).

6. The display panel according to claim 5, wherein The shape of the light guide plate (22) is the same as that of the accommodation cavity (21), and a light guide channel (221) is arranged on the light guide plate (22).

7. The display panel according to claim 5, wherein A reflective film is arranged on the surface of the printed circuit board (1) close to the light guide plate (22).

8. The display panel according to claim 1, wherein The printed circuit board (1) further includes a main control chip (13), and the main control chip (13) is electrically connected to the corresponding LED side-lighting circuits (12) and the first preset number of non-contact function buttons (11) respectively.

9. The display panel according to claim 8, wherein The printed circuit board (1) further includes a touch chip (14), and the touch chip (14) is electrically connected to the first preset number of non-contact function buttons (11) and the main control chip (13) respectively.

10. An electrical appliance, characterized in that, The display panel as claimed in any one of claims 1-9 is adopted.

Images