Display module, display device and electric appliance

Abstract

The invention provides a display module, a display device and an electric appliance, and the display module comprises a circuit board; the pattern layer is arranged opposite to the circuit board, and patterns are arranged on the pattern layer; the light emitting diode is positioned between the circuit board and the pattern layer and is arranged on the circuit board; the metal layer is arranged on the circuit board, is opposite to the pattern layer and is used for receiving touch input of a user; wherein the light emitting diode adjusts light emitting parameters according to touch input of a user, and the display state of the pattern is switched.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a display module, a display device, and an electrical appliance. Background Art

[0002] A display screen with a touch function is increasingly widely used because it can receive user input while displaying information, realizing the interaction between the user and the home appliance.

[0003] To provide a better interaction experience, the area of the display screen that can achieve touch control is getting larger and larger, such as reaching 5 square centimeters.

[0004] In related technical solutions, the designs that can achieve the above solutions are mainly TFT (Thin Film Transistor) display screens or a color film with an ITO (ITO is an N-type oxide semiconductor - indium tin oxide) touch film pasted on the back and then pasted onto the cover plate, and the bottom is illuminated by an LED (light-emitting diode) to achieve a color display effect with touch control.

[0005] However, in the above solutions, the cost of touch display is relatively high, and the ITO touch film has poor bending resistance and is prone to failure. At the same time, the plug-in ends of the ITO touch film are easily affected by high-temperature water vapor, vibration, etc., resulting in poor contact. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0007] To this end, in the first aspect of the present invention, a display module is provided.

[0008] In the second aspect of the present invention, a display device is provided.

[0009] In the third aspect of the present invention, an electrical appliance is provided.

[0010] In view of this, according to the first aspect of the present invention, a display module is provided, including: a circuit board; a pattern layer disposed opposite to the circuit board, with a pattern on the pattern layer; a light-emitting diode located between the circuit board and the pattern layer and disposed on the circuit board; a metal layer disposed on the circuit board and opposite to the pattern layer for receiving a touch input from a user; wherein, the light-emitting diode adjusts the light-emitting parameters according to the touch input of the user to switch the display state of the pattern.

[0011] In this technical solution, a display module is proposed. While realizing the display of patterns, the display module can also realize the touch input of users. Specifically, a metal layer can be used to sense the touch input of users, and then light-emitting diodes are used to respond to the touch input of users. In this process, the touch function of the display module can be realized without using an ITO touch film. Therefore, the problems existing in using an ITO touch film, such as poor bending resistance, easy occurrence of faults, and the contact ends of the ITO touch film are prone to poor contact due to the influence of high-temperature water vapor, vibration, etc., are overcome.

[0012] In an embodiment of the present application, before and after the touch input, the capacitance value sensed by the metal layer will change. In order to eliminate the detection error, in the technical solution of the present application, a change threshold is preset in advance, and then the change value of the capacitance value sensed by the metal layer is compared with the change threshold, so as to realize the recognition of the touch input. And when the touch input is recognized, the light-emitting parameters of the light-emitting diodes are adjusted to realize the response to the touch input.

[0013] In the above technical solution, since the metal layer is disposed opposite to the pattern layer, it can cover the range of the pattern layer.

[0014] In addition, the display module proposed in the present application also has the following additional technical features.

[0015] In some technical solutions, optionally, the metal layer includes a first metal layer and / or a second metal layer; wherein, the first metal layer is located on the first side of the circuit board, and the first side is the side of the circuit board where the light-emitting diodes are provided; and / or the second metal layer is located on the second side of the circuit board, and the second side is the side opposite to the first side.

[0016] In this technical solution, the metal layer can be disposed on the first side of the circuit board according to actual use needs, or can be disposed on the second side of the circuit board, or can be disposed on both the first side and the second side of the circuit board at the same time.

[0017] Specifically, when the metal layer is disposed on the second side of the circuit board, the preparation of the display module can be divided into two stages, that is, the first stage for preparing the light-emitting diodes and the second stage for preparing the metal layer on the basis of the first stage. In this process, the influence of the preparation of the metal layer on the first stage can be reduced, and thus the success rate of preparing the display module is ensured.

[0018] When the metal layer is disposed on the first side of the circuit board, due to the absence of the shielding of the circuit board, the reaction of the metal layer to the touch input of users is more sensitive.

[0019] In one embodiment of the present application, the metal layer includes a first metal layer disposed on the first side of the circuit board and a second metal layer disposed on the second side of the circuit board to meet the usage requirements in different scenarios.

[0020] In some technical solutions, optionally, the display module further includes: a light homogenizing sheet, which is stacked with the pattern layer and is located between the light-emitting diode and the pattern layer.

[0021] In this technical solution, the light emitted by the light-emitting diode is prone to divergence or the emitted light is uneven. When the above problems exist, after the pattern in the pattern layer is irradiated by the light, the brightness at different positions in the pattern is likely to be inconsistent, and the existence of the above situation affects the display effect of the display module.

[0022] In the technical solution of the present application, by providing a light homogenizing sheet to process the light emitted by the light-emitting diode, the light irradiating the pattern in the pattern layer becomes more uniform, thereby improving the display effect of the display module.

[0023] In some technical solutions, optionally, the light homogenizing sheet can be frosted glass.

[0024] In some technical solutions, optionally, the display module further includes: a cover plate, which is attached to the pattern layer and is located on the side away from the circuit board.

[0025] In this technical solution, by providing a cover plate to protect the pattern layer, the light homogenizing sheet, and the light-emitting diode, the ability of the display module to cope with harsh working conditions is improved, ensuring the reliability of the display module.

[0026] In addition, the cover plate can also be used in cooperation with the pattern layer. When the light emitted by the light-emitting diode illuminates the pattern in the pattern layer, the lines of the illuminated pattern become softer, enhancing the display effect of the display module.

[0027] In some technical solutions, optionally, the cover plate is a glass cover plate or an acrylic cover plate.

[0028] In some technical solutions, optionally, the pattern layer is a coating provided on the cover plate; and / or the light homogenizing sheet is a light homogenizing coating provided on the pattern layer.

[0029] In this technical solution, by defining the pattern layer as a coating printed on the cover plate, it can achieve the effect of integrating the pattern layer and the cover plate. Furthermore, in the assembly process of the display module, the number of components to be assembled is reduced, the assembly difficulty is lowered, the assembly efficiency is improved, and the yield rate of assembly is also increased, thereby reducing the manufacturing cost of the display module.

[0030] For the light homogenizing film which is a light homogenizing coating printed on the pattern layer, in the case of manufacturing a display module, the light homogenizing film can be directly prepared on the basis of the pattern layer by spraying or electroplating. In this process, the pattern layer and the light homogenizing film can be integrally designed, which can not only ensure the display effect of the display module, but also reduce the assembly difficulty of the display module and improve the yield rate of manufacturing the display module.

[0031] In addition, the thickness of the light homogenizing coating can be determined according to actual design requirements and will not be elaborated here.

[0032] In some technical solutions, optionally, the display module further includes: a display bracket disposed between the circuit board and the light homogenizing film. The display bracket, the circuit board and the light homogenizing film enclose a cavity, and the light-emitting diode is located in the cavity.

[0033] In this embodiment, by arranging the light-emitting diode in the cavity, after the manufacture of the display module is completed, the cavity can be used to protect the light-emitting diode with touch function, thereby reducing the probability of damage to the light-emitting diode with touch function due to factors such as high-temperature water vapor and vibration, so as to ensure the reliability of the display module.

[0034] In addition, the setting of the display bracket can connect the circuit board and the light homogenizing film, thereby ensuring the firmness of the display module, improving the ability of the display module to cope with harsh working conditions, and ensuring the reliability of the display module.

[0035] In some technical solutions, optionally, the display bracket is a non-translucent bracket.

[0036] In this technical solution, by selecting the display bracket as a non-translucent bracket, the light-emitting direction of the light-emitting diode located in the cavity can be restricted by the display bracket. While improving the display brightness of the pattern it irradiates, it can also reduce the interference of light to adjacent display modules, that is, reduce the probability of light crosstalk and ensure the display effect of the display module.

[0037] In some technical solutions, optionally, a non-translucent coating is sprayed on one side of the display bracket located in the cavity.

[0038] In some technical solutions, optionally, the material of the display bracket is a non-translucent material.

[0039] In some technical solutions, optionally, the light-emitting parameters include: light-emitting color and / or light-emitting brightness.

[0040] In this technical solution, the light-emitting color can be switched among red, yellow and green, or can be changed within the existing visible light range according to actual usage requirements, which will not be elaborated here.

[0041] In the above technical solution, the value of the emission luminance can be zero. At this time, the light-emitting diode does not emit light, and the emission luminance of the light-emitting diode can be selected according to actual usage requirements, which will not be elaborated here.

[0042] According to the second aspect of the present invention, the present invention provides a display device, including: M display windows, where M is a positive integer greater than or equal to 1; N display modules as described in any one of the first aspect, opposite to the M display windows, where N is a positive integer greater than or equal to 1; and a controller, connected to the N display modules, for controlling the display state of each of the M display windows.

[0043] In this technical solution, a display device is proposed. In this display device, the display modules as described above are included. Therefore, it has all the beneficial effects of the above display modules, which will not be elaborated here.

[0044] In the above technical solution, the display window can be understood as a window for displaying information to the user and receiving user input.

[0045] In some technical solutions, optionally, the first display window among the M display windows corresponds to O display modules, where O is less than N and greater than or equal to 1; among them, the metal layer in each of the O display modules is connected to the first terminal of the controller, and the light-emitting diode in each of the O display modules is connected to the controller; among them, the controller is used for: when the metal layer in the first display module receives user input, controlling the O display modules to adjust the light-emitting parameters and switch the display state of the pattern in the first display window; where the first display module is any one of the O display modules.

[0046] Based on this, in the technical solution of the present application, when any one of the display modules in the first display window senses the user's touch input, the first display window can be used for response, and during this process, the control of the display modules in the entire first display window can be achieved.

[0047] Among them, the display modules located in the first display window form an overall pattern. Specifically, as can be seen from the above, each pattern layer in each display module has a pattern, and for the same display window, such as the first display window, the O display modules corresponding to this display window include O patterns, and the above O patterns can be combined to form an overall pattern so as to realize the switching of the display state of this display window according to the user's touch input to this display window.

[0048] In some technical solutions of the application, each light-emitting diode in each of the O display modules is respectively connected to a controller, so that in response to a user's touch input, the light-emitting parameters can be respectively switched, so that the overall pattern in the above text presents different display states, and then use the overall pattern to display more information.

[0049] Exemplarily, when any one of the display modules in the first display window senses a user's touch input, the light-emitting diodes in the display modules located at the edge of the first display window emit light, while the light-emitting diodes in the display modules located inside the first display window do not emit light. Herein, the display modules located inside the first display window can be understood as the display modules surrounded by the display modules located at the edge of the first display window.

[0050] In some technical solutions, optionally, the light-emitting diodes in the display modules located at the edge of the first display window emit light of a first color or light of a first light-emitting intensity, and the display modules located inside the first display window emit light of a second color or light of a second light-emitting intensity, so as to achieve a display effect of differential display.

[0051] In some technical solutions, optionally, the light-emitting diodes in each of the O display modules are connected to the second terminal of the controller.

[0052] In this technical solution, the O display modules can switch the light-emitting parameters according to the same state in response to a user's touch input to meet the display requirements in different scenarios.

[0053] In some technical solutions, optionally, the controller is specifically configured to: obtain the capacitance value of the first terminal; within the first time period, if the change value of the capacitance value is greater than or equal to the change threshold, determine that the metal layer in the first display module has received a user input.

[0054] In this embodiment, if the touch input is recognized based on the capacitance value sensed by the metal layer, the probability of misrecognizing the touch input will be relatively high. Specifically, in the case where the display device is in different usage scenarios, the capacitance values sensed by the metal layer are different.

[0055] In order to improve the problem that the display device misrecognizes the touch input, the technical solution of the present application uses the change value of the capacitance value as the recognition variable of the touch input, and compares the change value of the capacitance value within the first time period with the change threshold through a preset change threshold, so as to achieve the recognition of the touch input.

[0056] During this process, even when the display device is in different working scenarios and the capacitance values sensed by the metal layer are different, the recognition of touch input will not be triggered. Therefore, the misrecognition of touch input can be reduced, and the accuracy of touch input recognition is improved.

[0057] In some technical solutions, optionally, the first duration is related to the duration of the contact between the display device and the user's finger when the touch input occurs. Its specific value will not be elaborated here.

[0058] According to the third aspect of the present invention, the present invention provides an electrical appliance, including: the display device as described in any one of the above.

[0059] In some technical solutions, the electrical appliance includes any one of a microwave oven, a rice cooker, and an electric pressure cooker.

[0060] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0062] Figure 1 FIG. 1 shows one of the schematic structural diagrams of a display module in an embodiment of the present invention;

[0063] Figure 2 FIG. 2 shows another schematic structural diagram of a display module in an embodiment of the present invention;

[0064] Figure 3 FIG. 3 shows still another schematic structural diagram of a display module in an embodiment of the present invention;

[0065] Figure 4 FIG. 4 shows one of the schematic structural diagrams of a display device in an embodiment of the present invention;

[0066] Figure 5 FIG. 5 shows another schematic structural diagram of a display device in an embodiment of the present invention;

[0067] Figure 6 FIG. 6 shows still another schematic structural diagram of a display device in an embodiment of the present invention;

[0068] Figure 7 FIG. 7 shows a schematic flowchart of the control logic executed by the controller in an embodiment of the present invention.

[0069] Among them, Figures 1 to 6 the corresponding relationship between the reference numerals in the drawings and the component names is:

[0070] 100 Display module, 102 circuit board, 104 pattern layer, 1042 pattern, 106 light-emitting diode, 1062 first connection terminal, 1064 second connection terminal, 108 metal layer, 1082 first metal layer, 1084 second metal layer, 110 light homogenizing sheet, 112 cover plate, 114 display bracket, 116 cavity, 200 display device, 202 display window, 300 controller, 302 first end pin, 11 wire. Detailed implementation manner

[0071] In order to be able to more clearly understand the above aspects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0072] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0073] In one embodiment of the present application, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a display module 100 is provided, including: a circuit board 102; a pattern layer 104, which is disposed opposite to the circuit board 102, and the pattern layer 104 has a pattern 1042; a light-emitting diode 106, which is located between the circuit board 102 and the pattern layer 104 and is disposed on the circuit board 102; a metal layer 108, which is disposed on the circuit board 102 and is disposed opposite to the pattern layer 104 for receiving a touch input from a user; wherein, the light-emitting diode 106 adjusts the light-emitting parameters according to the touch input of the user to switch the display state of the pattern.

[0074] In this embodiment, a display module 100 is proposed. While the display module 100 realizes the display of the pattern, it can also realize the touch input of the user. Specifically, the metal layer 108 can be used to sense the touch input of the user, and then the light-emitting diode 106 is used to respond to the touch input of the user. In this process, the touch function of the display module 100 can be realized without using an ITO touch film. Therefore, the problems of poor bending resistance, easy occurrence of faults when using an ITO touch film are overcome. At the same time, the plug-in ends of the ITO touch film are easily affected by high-temperature water vapor, vibration, etc. and cause poor contact.

[0075] In an embodiment of the present application, before and after touch input, the capacitance value sensed by the metal layer 108 will change. In order to eliminate detection errors, in the embodiments of the present application, a change threshold is preset in advance, and then the change value of the capacitance value sensed by the metal layer 108 is compared with the change threshold, so as to realize the recognition of touch input. And when touch input is recognized, the light-emitting parameters of the light-emitting diode 106 are adjusted to realize the response to touch input.

[0076] In the above embodiment, since the metal layer 108 is disposed opposite to the pattern layer 104, it can cover the range of the pattern layer 104.

[0077] In some embodiments, optionally, the metal layer 108 includes a first metal layer 1082 and / or a second metal layer 1084; wherein, the first metal layer 1082 is located on the first side of the circuit board 102, and the first side is the side of the circuit board 102 where the light-emitting diode 106 is disposed; and / or the second metal layer 1084 is located on the second side of the circuit board 102, and the second side is the side opposite to the first side.

[0078] In this embodiment, the metal layer 108 can be disposed on the first side of the circuit board 102 according to actual usage needs, or can be disposed on the second side of the circuit board 102, or can be disposed on both the first side and the second side of the circuit board 102 at the same time.

[0079] Specifically, when the metal layer 108 is disposed on the second side of the circuit board 102, the preparation of the display module 100 can be divided into two stages, that is, the first stage for preparing the light-emitting diode 106 and the second stage for preparing the metal layer 108 on the basis of the first stage. In this process, the influence of the preparation of the metal layer 108 on the first stage can be reduced, thereby ensuring the success rate of preparing the display module 100.

[0080] When the metal layer 108 is disposed on the first side of the circuit board 102, due to the absence of the shielding of the circuit board 102, the reaction of the metal layer 108 to the touch input of the user is more sensitive.

[0081] In an embodiment of the present application, the metal layer 108 includes a first metal layer 1082 disposed on the first side of the circuit board 102 and a second metal layer 1084 disposed on the second side of the circuit board 102 to meet the usage needs in different scenarios.

[0082] In some embodiments, optionally, the display module 100 further includes: a light homogenizing sheet 110, which is stacked with the pattern layer 104 and is located between the light-emitting diode 106 and the pattern layer 104.

[0083] In this embodiment, the light emitted by the light-emitting diode 106 is likely to have a problem of divergence or the emitted light is uneven. When the above problems exist, after the pattern in the pattern layer 104 is irradiated by the light, the brightness of different positions in the pattern is likely to be inconsistent, and the existence of the above situation affects the display effect of the display module 100.

[0084] In the embodiment of the present application, by providing a light homogenizing sheet 110, the light emitted by the light-emitting diode 106 is processed by the light homogenizing sheet 110, so that the light irradiating the pattern in the pattern layer 104 is more uniform, thereby improving the display effect of the display module 100.

[0085] In some embodiments, optionally, the light homogenizing sheet 110 may be a frosted glass.

[0086] In some embodiments, optionally, the display module 100 further includes: a cover plate 112, which is disposed in contact with the pattern layer 104 and is located on the side away from the circuit board 102.

[0087] In this embodiment, by providing the cover plate 112, the pattern layer 104, the light homogenizing sheet 110, and the light-emitting diode 106 are protected by the cover plate 112, thereby improving the ability of the display module 100 to cope with harsh working conditions and ensuring the reliability of the display module 100.

[0088] In addition, the cover plate 112 can also be used in cooperation with the pattern layer 104, so that when the light emitted by the light-emitting diode 106 illuminates the pattern in the pattern layer 104, the lines of the illuminated pattern are softer, improving the display effect of the display module 100.

[0089] In some embodiments, optionally, the cover plate 112 is a glass cover plate 112 or an acrylic cover plate 112.

[0090] In some embodiments, optionally, the pattern layer 104 is a coating provided on the cover plate 112; and / or the light homogenizing sheet 110 is a light homogenizing coating provided on the pattern layer 104.

[0091] In this embodiment, by defining the pattern layer 104 as a coating printed on the cover plate 112, the integrated effect of the pattern layer 104 and the cover plate 112 can be achieved. Furthermore, in the assembly process of the display module 100, the number of components to be assembled is reduced, while reducing the assembly difficulty, improving the assembly efficiency, and also improving the yield rate of assembly, thereby reducing the manufacturing cost of the display module 100.

[0092] For the light homogenizing film 110 which is a light homogenizing coating printed on the pattern layer 104, in the case of manufacturing the display module 100, the light homogenizing film 110 can be directly prepared on the basis of the pattern layer 104 by means of spraying or electroplating. In this process, the pattern layer 104 and the light homogenizing film 110 can be integrally designed, which can not only ensure the display effect of the display module 100, but also reduce the assembly difficulty of the display module 100 and improve the yield rate of manufacturing the display module 100.

[0093] In addition, the thickness of the light homogenizing coating can be determined according to actual design requirements and will not be elaborated here.

[0094] In some embodiments, optionally, the display module 100 further includes: a display bracket 114 disposed between the circuit board 102 and the light homogenizing film 110. The display bracket 114, the circuit board 102 and the light homogenizing film 110 enclose a cavity 116, and the light emitting diode 106 is located in the cavity 116.

[0095] In this embodiment, by disposing the light emitting diode 106 in the cavity 116, after the manufacturing of the display module 100 is completed, the cavity 116 can be used to protect the light emitting diode 106 with touch function, thereby reducing the probability of damage to the light emitting diode 106 with touch function due to factors such as high temperature water vapor and vibration, so as to ensure the reliability of the display module 100.

[0096] In addition, the setting of the display bracket 114 can connect the circuit board 102 and the light homogenizing film 110, thereby ensuring the firmness of the display module 100, improving the ability of the display module 100 to cope with harsh working conditions, and ensuring the reliability of the display module 100.

[0097] In some embodiments, optionally, the display bracket 114 is a non-translucent bracket.

[0098] In this embodiment, by selecting the display bracket 114 as a non-translucent bracket, the display bracket 114 can be used to limit the light emitting direction of the light emitting diode 106 located in the cavity 116. While improving the display brightness of the pattern it irradiates, it can also reduce the interference of light to the adjacent display module 100, that is, reduce the probability of light crosstalk and ensure the display effect of the display module 100.

[0099] In some embodiments, optionally, a non-translucent coating is sprayed on one side of the display bracket 114 located in the cavity 116.

[0100] In some embodiments, optionally, the material of the display bracket 114 is a non-translucent material.

[0101] In some embodiments, optionally, the light-emitting parameters include: light-emitting color and / or light-emitting brightness.

[0102] In this embodiment, the light-emitting color can be switched among red, yellow, and green, or can be changed within the existing visible light range according to actual usage requirements, which will not be elaborated here.

[0103] In the above embodiment, the value of the light-emitting brightness can be zero. At this time, the light-emitting diode 106 does not emit light, and the light-emitting brightness of the light-emitting diode 106 can be selected according to actual usage requirements, which will not be elaborated here.

[0104] In some embodiments, such as Figure 4 and Figure 6 shown, the present invention provides a display device 200, including: M display windows 202, where M is a positive integer greater than or equal to 1; N display modules 100 as described in any item of the first aspect, opposite to the M display windows 202, where N is a positive integer greater than or equal to 1; a controller 300, connected to the N display modules 100, for controlling the display state of each of the M display windows 202.

[0105] In this embodiment, a display device 200 is proposed. In this display device 200, the display module 100 as described above is included. Therefore, it has all the beneficial effects of the above display module 100, which will not be elaborated here.

[0106] In the above embodiment, the display window 202 can be understood as a window for displaying information to the user and receiving user input.

[0107] In some embodiments, optionally, the first display window among the M display windows 202 corresponds to O display modules 100, where O is less than N and greater than or equal to 1; wherein, the metal layer 108 in each of the O display modules 100 is connected to the first terminal pin 302 of the controller 300, and the light-emitting diode 106 in each of the O display modules 100 is connected to the controller 300; wherein, the controller 300 is configured to: when the metal layer 108 in the first display module receives user input, control the O display modules 100 to adjust the light-emitting parameters and switch the display state of the pattern in the first display window; wherein, the first display module 100 is any one of the O display modules 100.

[0108] Based on this, in the embodiments of the present application, when any one of the display modules 100 in the first display window senses user touch input, the first display window can be used for response, and during this process, the control of the display modules 100 in the entire first display window can be achieved.

[0109] Among them, the display modules 100 located in the first display window form an overall pattern. Specifically, as can be seen from the above, each pattern layer 104 in the display module 100 has a pattern. For the same display window 202, such as the first display window, the O display modules 100 corresponding to the display window 202 include O patterns, and the above O patterns can be combined to form an overall pattern, so as to realize the switching of the display state of the display window 202 according to the touch input of the user to the display window 202.

[0110] In some embodiments of the application, the light-emitting diodes 106 in each of the O display modules 100 are respectively connected to the controller 300, so that in response to the touch input of the user, their light-emitting parameters can be respectively switched, so that the overall pattern in the above text presents different display states, and further use the overall pattern to display more information.

[0111] Exemplarily, when any one of the display modules 100 in the first display window senses the touch input of the user, the light-emitting diodes 106 in the display modules 100 located at the edge of the first display window emit light, while the light-emitting diodes 106 in the display modules 100 located inside the first display window do not emit light. Among them, the display modules 100 located inside the first display window can be understood as the display modules 100 surrounded by the display modules 100 located at the edge of the first display window.

[0112] In some embodiments, optionally, the light-emitting diodes 106 in the display modules 100 located at the edge of the first display window emit light of the first color, or emit light of the first light-emitting intensity, and the display modules 100 located inside the first display window emit light of the second color, or emit light of the second light-emitting intensity, so as to achieve the display effect of differential display.

[0113] In some embodiments, optionally, the light-emitting diodes 106 in each of the O display modules 100 are connected to the second terminal of the controller 300.

[0114] In this embodiment, the O display modules 100 can switch their light-emitting parameters according to the same state in response to the touch input of the user to meet the display requirements in different scenarios.

[0115] In some embodiments, optionally, the controller 300 is specifically configured to: obtain the capacitance value of the first terminal; within the first time period, if the change value of the capacitance value is greater than or equal to the change threshold, determine that the metal layer 108 in the first display module 100 has received a user input.

[0116] In this embodiment, if the recognition of touch input is implemented based on the capacitance value sensed by the metal layer 108, the probability of misrecognition of touch input will be relatively high. Specifically, when the display device 200 is in different usage scenarios, the capacitance values sensed by the metal layer 108 are different.

[0117] To improve the problem of misrecognition of touch input by the display device 200, the embodiments of the present application use the change value of the capacitance value as the recognition variable of touch input. By comparing the change value of the capacitance value within the first duration with the change threshold through a preset change threshold, the recognition of touch input is realized.

[0118] During this process, even when the display device 200 is in different working scenarios and the capacitance values sensed by the metal layer 108 are different, the recognition of touch input will not be triggered. Therefore, the misrecognition of touch input can be reduced, and the accuracy of touch input recognition is improved.

[0119] In some embodiments, optionally, the first duration is related to the duration of contact between the display device 200 and the user's finger when the touch input occurs, and its specific value will not be elaborated here.

[0120] In one of the embodiments, the metal layer 108 is a touch copper foil.

[0121] In one of the embodiments, the light-emitting diode 106 has a first connection terminal 1062 and a second connection terminal 1064. The first connection terminal 1062 is connected to the second pin of the controller 300, and the second connection terminal 1064 is grounded.

[0122] In one of the embodiments, the metal layer 108 is connected to the controller 300 through a wire 11.

[0123] As Figure 7 shown, the controller 300 executes the following control logic:

[0124] Step 702, touch the icon;

[0125] Step 704, the induction amount input by the wire is greater than the corresponding threshold. If the judgment result is yes, execute step 706. If the judgment result is no, execute step 704;

[0126] Step 706, change the display area or execute the corresponding program.

[0127] Among them, the induction amount is also the change value of the capacitance value in the present application, and the corresponding threshold of the induction amount is also the change threshold in the present application.

[0128] In one of the embodiments, optionally, the display area is also the display device 200 in the present application, or it can also be the display module 100 in the present application.

[0129] In one embodiment, optionally, the program may be an application pre-bound to touch input.

[0130] In one embodiment, the present invention provides an electrical appliance, comprising: a display device as described in any one of the above.

[0131] In some embodiments, the electrical appliance includes any one of a microwave oven, a rice cooker, and an electric pressure cooker.

[0132] The features of the terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the written description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. Additionally, "and / or" in the description and claims indicates at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0133] In the written description of the present invention, it can be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description of the embodiments of the present invention, rather than indicating or implying that the structures, devices, and elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on the present invention.

[0134] In the written description of the present invention, it can be understood that, except for explicit regulations and limitations, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be fixedly connected, detachably connected, or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection between the two, or an indirect connection between the two through an intermediate medium, and it can be the communication inside the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0135] In the claims, the specification and the drawings of the present invention, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, the specification and the drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0136] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display module, characterized in that, it includes: a circuit board; a pattern layer, which is arranged opposite to the circuit board, and the pattern layer has a pattern; light-emitting diodes, which are located between the circuit board and the pattern layer and are arranged on the circuit board; a metal layer, which is arranged on the circuit board and is arranged opposite to the pattern layer, and is used for receiving a touch input from a user; wherein, the light-emitting diodes adjust light-emitting parameters according to a touch input from a user and switch the display state of the pattern.

2. The display module according to claim 1, characterized in that, the metal layer includes a first metal layer and / or a second metal layer; wherein, the first metal layer is located on a first side of the circuit board, and the first side is the side of the circuit board where the light-emitting diodes are arranged; and / or the second metal layer is located on a second side of the circuit board, and the second side is the side opposite to the first side.

3. The display module according to claim 1 or 2, characterized in that, the display module further includes: a light homogenizing sheet, which is stacked with the pattern layer and is located between the light-emitting diodes and the pattern layer.

4. The display module according to claim 3, characterized in that, the display module further includes: a cover plate, which is attached to the pattern layer and is located on a side away from the circuit board.

5. The display module according to claim 4, characterized in that, the pattern layer is a coating arranged on the cover plate; and / or the light homogenizing sheet is a light homogenizing coating arranged on the pattern layer.

6. The display module according to claim 3, characterized in that, the display module further includes: a display bracket, which is arranged between the circuit board and the light homogenizing sheet, and a cavity is formed by enclosing the display bracket, the circuit board and the light homogenizing sheet, and the light-emitting diodes are located in the cavity.

7. The display module according to claim 1 or 2, characterized in that, the light-emitting parameters include: light-emitting color and / or light-emitting brightness.

8. A display device, characterized in that, it includes: M display windows, where M is a positive integer greater than or equal to 1; N display modules according to any one of claims 1 to 7, which are opposite to the M display windows, and N is a positive integer greater than or equal to 1; a controller, which is connected to the N display modules and is used for controlling the display state of each display window among the M display windows.

9. The display device according to claim 8, characterized in that, a first display window among the M display windows corresponds to O display modules, where O is less than N and greater than or equal to 1; wherein, the metal layer in each of the O display modules is connected to a first terminal pin of the controller, and the light-emitting diodes in each of the O display modules are connected to the controller; wherein, the controller is used for: when the metal layer in the first display module receives an input from a user, controlling the O display modules to adjust light-emitting parameters and switch the display state of the pattern in the first display window; wherein, the first display module is any one of the O display modules.

10. The display device according to claim 9, It is characterized in that the controller is specifically configured to: obtain the capacitance value of the first terminal pin; within a first time period, if the change value of the capacitance value is greater than or equal to a change threshold, determine that the metal layer in the first display module has received a user input.

11. An electrical appliance, It is characterized in that comprising: a display device according to any one of claims 8 to 10.

12. The electrical appliance according to claim 11, It is characterized in that the electrical appliance includes any one of a microwave oven, a rice cooker, and an electric pressure cooker.

Images