Touch display device and electronic equipment

Abstract

The utility model provides a touch display device and electronic equipment. The touch display device can comprise a display layer, a touch layer and an induction layer, and the touch layer is arranged on the light emitting side of the display layer; the sensing layer is arranged between the display layer and the touch layer and meets the light transmission condition; under the condition that the touch layer is subjected to acting force towards the display layer, the sensing layer senses pressure transmitted to the display layer by the touch layer and generates first charges perpendicular to the display layer and second charges parallel to the display layer, and the number of the first charges is larger than that of the second charges.

Description

Technical Field

[0001] The present disclosure relates to the technical field of display devices, and in particular, to a touch display device and an electronic device. Background Art

[0002] A touch display device has a display function for displaying content and an input function for inputting information by touch, and the input information can control the display content to change the display content.

[0003] However, when inputting information by touch, there is a problem that accidental touch easily occurs, resulting in a change in the display content. Utility Model Content

[0004] The present disclosure provides a touch display device and an electronic device, and the technical solutions are as follows:

[0005] In a first aspect, the present disclosure provides a touch display device, which may include: a display layer, a touch layer, and a sensing layer. The touch layer is disposed on the light-emitting side of the display layer; the sensing layer is disposed between the display layer and the touch layer and satisfies the light-transmitting condition. When a force is applied to the touch layer in the direction of the display layer, the sensing layer senses the pressure transmitted by the touch layer to the display layer and generates a first charge perpendicular to the display layer and a second charge parallel to the display layer, and the number of the first charges is greater than the number of the second charges.

[0006] In some embodiments, the sensing layer may include a plurality of sub-sensing layers to form a sensor network. The plurality of sub-sensing layers are laid flat and respectively face the touch layer. When a force is applied to a pressing position of the touch layer in the direction of the display layer, the plurality of sub-sensing layers respectively have different deformations to generate different deformation signals.

[0007] In some embodiments, the sensing layer may include an even number of sub-sensing layers, and they are symmetrically arranged in pairs.

[0008] In some embodiments, a first grounding layer is provided by spacing two adjacent sub-sensing layers apart, and the spacing distance between two adjacent sub-sensing layers is less than the distance between two opposite side edges of any one of the sub-sensing layers forming the spacing distance.

[0009] In some embodiments, both the display layer and the touch layer are rectangular, and the side edges of one circle of the display layer and the side edges of one circle of the touch layer are flush, and a setting space is formed between the display layer and the touch layer; the four sub-sensing layers are evenly distributed in the setting space.

[0010] In some embodiments, the sub-sensing layer may include a detection layer and a conversion layer. The detection layer and the conversion layer are stacked between the touch layer and the display layer, and the conversion layer is electrically connected to the detection layer to convert the pressure detected by the detection layer into an electrical signal. Among them, the detection layer may include a capacitive sensor or a piezoelectric sensor.

[0011] In some embodiments, the touch display device may include a first channel and a second channel. The first channel is connected to the conversion layer and is provided with a first signal amplifier. The second channel is connected to the conversion layer and is provided with a second signal amplifier. The amplification factor of the second signal amplifier is less than that of the first signal amplifier. When the amount of the deformation signal is less than a preset amount of the deformation signal, the electrical signal is transmitted through the first channel. When the amount of the deformation signal is greater than the preset amount of the deformation signal, the electrical signal is transmitted through the second channel.

[0012] In some embodiments, the touch display device may include a controller, which is respectively connected to the first channel and the second channel and controls the output of the sum of the amounts of the deformation signals of the plurality of sub-sensing layers.

[0013] In some embodiments, the touch display device may include a circuit layer, a second conductive layer, and an insulating layer. One side of the circuit layer is connected to one side of the conversion layer close to the touch layer through a first conductive layer and is connected to the first side of a second grounding layer. One side of the second conductive layer is respectively connected to one side of the conversion layer close to the display layer and is connected to the second side of the second grounding layer opposite to the first side. The insulating layer covers the surface of the second conductive layer close to the display layer.

[0014] In a second aspect, the present disclosure provides an electronic device, which may include a display layer, a touch layer, and a sensing layer. The touch layer is disposed on the light-emitting side of the display layer. The sensing layer is disposed between the display layer and the touch layer and satisfies the light-transmitting condition. When a force is applied to the touch layer in the direction of the display layer, the sensing layer senses the pressure transmitted from the touch layer to the display layer and generates a first charge perpendicular to the display layer and a second charge parallel to the display layer, and the number of the first charges is greater than the number of the second charges.

[0015] The above description is only an overview of the technical solutions of the present disclosure. In order to be able to understand the technical means of the present disclosure more clearly and implement them in accordance with the content of the description, the following describes the preferred embodiments of the present disclosure in detail in conjunction with the accompanying drawings. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0017] Figure 1 Partial cross-sectional structure schematic diagram of the touch display device provided by the present disclosure;

[0018] Figure 2 Schematic diagram of the charge distribution of the sensing layer of the touch display device provided by the present disclosure after being pressed;

[0019] Figure 3 Schematic diagram of the structure of the sensing layer and the first grounding layer of the touch display device provided by the present disclosure Figure 1 ;

[0020] Figure 4 Schematic diagram of the structure of the sensing layer and the first grounding layer of the touch display device provided by the present disclosure Figure 2 ;

[0021] Figure 5 Schematic diagram of the structure of the sensing layer and the first grounding layer of the touch display device provided by the present disclosure Figure 3 ;

[0022] Figure 6 Provided by the present disclosure Figure 5 Schematic diagram of the charge distribution of the sensing layer;

[0023] Figure 7 Schematic diagram of the structure of the sensing layer and the first grounding layer of the touch display device provided by the present disclosure Figure 4 ;

[0024] Figure 8 Schematic diagram of the structure of the sensing layer and the first grounding layer of the touch display device provided by the present disclosure Figure 5 ;

[0025] Figure 9 Schematic diagram of the connection structure of the touch display device provided by the present disclosure Figure 1 ;

[0026] Figure 10 Schematic diagram of the connection structure of the touch display device provided by the present disclosure Figure 2 ;

[0027] Figure 11 Schematic diagram of the structure of the electronic device provided by the present disclosure.

[0028] Explanation of the reference numerals:

[0029] 10. Touch display device; 11. Display layer; 12. Touch layer; 13. Sensing layer; 131. Sub-sensing layer; 1311. Detection layer; 1312. Conversion layer; 14. First grounding layer; 151. Circuit layer; 152. First conductive layer; 153. Second conductive layer; 154. Insulating layer; 155. Second grounding layer; 161. First optical adhesive layer; 162. First metal layer; 163. Third grounding layer; 164. Second optical adhesive layer; 165. Third optical adhesive layer; 166. Second metal layer; 167. Fourth optical adhesive layer; 168. Third metal layer; 169. Fourth grounding layer; 170. Fifth optical adhesive layer;

[0030] 100. Electronic device; 20. First body; 21. First display screen; 30. Second body; 31. Second display screen. Detailed implementation manners

[0031] The following further describes in detail the implementation manners of the present disclosure in conjunction with the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0032] These embodiments are provided by the present disclosure to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0033] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure 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 cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0034] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before this word are covered by the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0035] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0036] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the related art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0037] Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the specification.

[0038] Conductive objects such as a user's finger or a stylus can perform touch operations on the touch display area of the touch display device to change the display content of the touch display area. However, when inputting information through touch operations, the problem of accidental touch easily occurs, resulting in a change in the display content.

[0039] A solution is as follows: A pressure detection device can detect the pressure exerted on the touch display device during a touch operation. When the detected pressure value is greater than the target threshold, it can be determined as a normal touch; when the detected pressure value is less than the target threshold, it can be determined as an accidental touch. In the case of an accidental touch, the transmission line between the input information during the touch operation and the display area of the output display content can be controlled to be interrupted, so as to reduce the probability of the display content changing in the case of an accidental touch.

[0040] The inventors of the present application found that different directions of charges can be generated during the detection process of the pressure detection device. Among these different directions of charges, the larger the ratio of the number of charges perpendicular to the display area to the total amount of these different directions of charges, the higher the accuracy of the detected pressure value.

[0041] If the pressure detection device generates diffused charges during detection, such that the ratio of the number of charges perpendicular to the display area to the total amount of these different directions of charges is small, and thus the determined pressure value is lower than the actual pressure value and may be determined as an accidental touch, resulting in inaccurate judgment results.

[0042] To this end, the touch display device 10 provided by the present disclosure may include: a display layer 11, a sensing layer 13, and a touch layer 12 that are stacked. The display layer 11 may have a display area. One side of the touch layer 12 facing away from the display layer 11 may have a touch display area. The display content of the display area may be displayed in the touch display area of the touch layer 12 through the sensing layer 13. The pressure position received by the touch display area may be detected through the touch layer 12. The sensing layer 13 located between the touch layer 12 and the display layer 11 may sense the pressure value transmitted from the touch layer 12 to the display layer 11. When the pressure value is less than the target threshold, it may be determined that the pressure received at the pressure position is the pressure generated by accidental touch of a conductive object such as a user's finger or a stylus. At this time, the transmission line may be disconnected to reduce the probability of the display content of the display layer 11 changing during accidental touch. In addition, when the sensing layer 13 senses the pressure transmitted from the touch layer 12 to the display layer 11, a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11 may be generated. The number of the first charges is greater than the number of the second charges. Here, the number of charges perpendicular to the display area is large, so as to increase the ratio of the number of charges perpendicular to the display area to the total number of charges generated by the sensing layer 13, so that the accuracy of the detected pressure value is higher, and thus the determination of the accidental touch result is more accurate.

[0043] In a first aspect

[0044] The present disclosure provides a touch display device 10. Refer to Figures 1 to 10 As shown, the touch display device 10 may include: a display layer 11, a touch layer 12, and a sensing layer 13. The touch layer 12 may be disposed on the light-emitting side of the display layer 11; the sensing layer 13 may be disposed between the display layer 11 and the touch layer 12 to meet the light-transmitting condition; when the touch layer 12 is subjected to a force in the direction of the display layer 11, the sensing layer 13 may sense the pressure transmitted from the touch layer 12 to the display layer 11, and may generate a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11. The number of the first charges is greater than the number of the second charges.

[0045] That is to say, the touch display device 10 may include a display layer 11, a sensing layer 13, and a touch layer 12 which are stacked. The sensing layer 13 located between the display layer 11 and the touch layer 12 may be light-transmissive, so that the content displayed by the display layer 11 can pass through the sensing layer 13 and be displayed on the side of the touch layer 12 facing away from the sensing layer 13. Among them, when the side of the touch layer 12 facing away from the display layer 11 is subjected to pressure actively applied or accidentally touched by a conductive object such as a user's finger or a stylus, the touch layer 12 can detect the pressure position (hereinafter referred to as: the current pressure position), and the sensing layer 13 can sense the pressure transmitted from the touch layer 12 corresponding to the current pressure position to the display layer 11, and can generate a first charge perpendicular to the display layer 11, and then can confirm the pressure value at the current pressure position according to the generated first charge; when the pressure value is greater than the target threshold, it can be determined that the pressure received at the current pressure position is the pressure actively applied by a conductive object such as a user's finger or a stylus; when the pressure value is less than the target threshold, it can be determined that the pressure received at the current pressure position is the pressure generated by accidental touch of a conductive object such as a user's finger or a stylus. At this time, the transmission line can be disconnected to reduce the control of the display content of the display layer 11. During this process, the current pressure position obtained when the touch layer 12 is touched can be used to support the detection of the pressure value of the sensing layer 13, so as to reduce the detection and confirmation of non-pressure areas, making the detection of accidental touch more accurate and efficient. In addition, when the sensing layer 13 senses the pressure transmitted from the touch layer 12 to the display layer 11, it can generate a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11, and the number of the first charges is greater than the number of the second charges. In this way, the ratio of the number of charges perpendicular to the display area to the total number of charges generated by the sensing layer 13 can be increased, making the detected pressure value more accurate, and thus making the determination of the accidental touch result more accurate. For example: Refer to Figure 2 As shown, the arrow direction is the direction of the user's finger applying pressure, and the positive and negative charges in the figure are the first charges perpendicular to the display layer 11.

[0046] In the display layer 11, it can be used to generate an image and display the generated image in the display area thereon. The display layer 11 may include a plurality of pixel units arranged in an array and a backlight source located on one side of the plurality of pixel units. When the light of the backlight source passes through the pixel units, the plurality of pixel units can respectively display to form an image; here, each pixel unit may include sub-pixels of three colors: red, green, and blue, so as to achieve color display. The light-emitting side of the display layer 11 may be the side where the display layer 11 displays the image. The display layer 11 may also be other settings, and this application is not limited thereto, that is, those skilled in the art can adjust or set according to specific requirements.

[0047] In the touch control layer 12, it can be used to detect the touch position of conductive objects such as the user's finger or a stylus on it, and the touch display device 10 can process the detected touch position information to generate input information. The touch control layer 12 can be a capacitive touch control layer, a resistive touch control layer, or a touch control layer in other setting forms; when the touch control layer 12 is a capacitive touch control layer, the touch control layer 12 can include: a transparent conductive layer and a touch sensor arranged in a stacked manner. The transparent conductive layer can have good transparency and conductivity. When no conductive object such as the user's finger or a stylus touches the transparent conductive layer, the electrodes on the touch sensor are in a stable state. When a conductive object such as the user's finger or a stylus touches the transparent conductive layer, a new capacitance path is formed between the conductive object and the transparent conductive layer, and the touch sensor can detect this capacitance change to determine the touch position; when the touch control layer 12 is a resistive touch control layer, the touch control layer 12 can include: a first conductive structure, a second conductive structure, and a diaphragm layer located between the first conductive structure and the second conductive structure. When a conductive object such as the user's finger or a stylus touches the first conductive structure, the first conductive structure at the operation position displaces in the direction of the second conductive structure and contacts the second conductive structure to form a closed circuit, and then the touch position can be determined through the change in voltage. The touch control layer 12 can also be other settings, and this application is not limited to this, that is, those skilled in the art can adjust or set according to specific requirements.

[0048] In the sensing layer 13, it can be used to sense the pressure transmitted from the touch control layer 12 to the display layer 11. The sensing layer 13 can meet the light transmission condition so that the image displayed by the display layer 11 can pass through the sensing layer 13 and be displayed on the side of the touch control layer 12 away from the sensing layer 13. The sensing layer 13 can be provided with a piezoelectric material layer to generate a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11. The quantity of the first charge can be confirmed by the piezoelectric coefficient of the sensing layer 13 and the magnitude of the pressure received perpendicular to the display layer 11, and the quantity of the second charge can be confirmed by the piezoelectric coefficient of the sensing layer 13 and the magnitude of the pressure received parallel to the display layer 11. The sensing layer 13 can also be other settings, and this application is not limited to this, that is, those skilled in the art can adjust or set according to specific requirements.

[0049] In one example, the touch display device 10 may include: a display layer 11, a touch layer 12, and a sensing layer 13. The display layer 11, the sensing layer 13, and the touch layer 12 are stacked in sequence. The image displayed by the display layer 11 may pass through the sensing layer 13 and be displayed on the side of the touch layer 12 facing away from the sensing layer 13. When the touch layer 12 is subjected to a pressure in the direction of the display layer 11, the sensing layer 13 may sense the pressure transmitted by the touch layer 12 to the display layer 11 and generate a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11. The number of the first charges is greater than the number of the second charges. The display layer 11, the touch layer 12, and the sensing layer 13 may all be connected to a processor device (such as the CPU shown in Figure 9 ), etc.) of the touch display device 10, so that the pressure position signal of the current pressure position detected by the touch layer 12 and the pressure value signal corresponding to the current pressure position sensed by the sensing layer 13 can be data-fused within the processor device to determine whether the current pressure position is a false touch. When it is a false touch, the connection between the processor device and the display layer 11 can be disconnected to reduce the change of the display content of the touch display device 10 during a false touch. In addition, the number of the first charges generated during the detection process of the sensing layer 13 is greater than the number of the second charges. In this way, the ratio of the number of charges perpendicular to the display area to the total number of charges generated by the sensing layer 13 can be increased, so that the accuracy of the detected pressure value is higher, and thus the determination of the false touch result is more accurate.

[0050] In some embodiments, as shown in Figures 3 to 8 , the sensing layer 13 may include a plurality of sub-sensing layers 131 to form a sensor network. The plurality of sub-sensing layers 131 may be laid flat and respectively face the touch layer 12. When a force in the direction of the display layer 11 is applied to a pressing position of the touch layer 12, the plurality of sub-sensing layers 131 may respectively have different deformations to generate different deformation signals. That is to say, the plurality of sub-sensing layers 131 may be respectively disposed opposite to different regions on the side of the touch layer 12 facing the display layer 11, and each sub-sensing layer 131 forms a sensing channel to cooperate with the pressure-sensitive detection of different positions on the touch layer 12. In this way, the touch display device 10 realizes the pressure-sensitive detection of the entire touch layer 12 through the design of the multi-channel sub-sensing layers 131. As shown in Figure 6 , the dotted circle corresponds to the pressing position of a conductive object such as a user's finger or a stylus. The charge distributions presented by the four sub-sensing layers 131 are such that the diagonal charge polarities are the same, so that the plurality of sub-sensing layers 131 may respectively have different deformations to generate different deformation signals.

[0051] According to the torsional characteristics of the material, a single sub-induction layer 131 can deform when a pressure is applied to the touch layer 12 in the direction of the display layer 11. At this time, when the size of the single sub-induction layer 131 is small, there may be a dislocation between the side of the single sub-induction layer 131 corresponding to the touch layer 12 and the side corresponding to the display layer 11 after deformation. In this way, the internal charges of the sub-induction layer 131 will cancel each other out, resulting in the inability to detect the signal volume. Therefore, the induction layer 13 here can include multiple sub-induction layers 131, and the signal of the induction layer 13 can be the sum of the signals of multiple sub-induction layers 131. In this way, when the internal charges of one sub-induction layer 131 cancel each other out, other sub-induction layers 131 can still detect the signal volume, so as to reduce the probability of the influence on the detection result when the internal charges of a single sub-induction layer 131 cancel each other out. Here, when a conductive object such as a user's finger or a stylus applies a force to a certain position on the touch layer 12 away from the display layer 11, multiple sub-induction layers 131 can deform respectively, and the different distances of different sub-induction layers 131 from the touch position result in different deformations, so as to generate different deformation signals. The different deformations can be that at least one of the deformation direction and the deformation amount is different; among them, the output calculation method of the sum of the signals of multiple sub-induction layers 131 can be: │CH1│+│CH2│+│CH3│+│CH4│+……+│CHN│, where CH1, CH2, CH3, CH4, ……, CHN are the deformation signals sensed by the corresponding multiple sub-induction layers 131 respectively.

[0052] In some embodiments, referring to Figures 3 to 8 As shown, the induction layer 13 can include an even number of sub-induction layers 131, and they are symmetrically arranged in pairs. That is to say, the induction layer 13 can include multiple sub-induction layers 131, and the number is even and the distribution is symmetric. Here, since the deformations of different sub-induction layers 131 are different, and the signals sensed by different sub-induction layers 131 are fused to obtain the pressure value. In this way, an even number of sub-induction layers 131 can reduce the probability of the influence on the detection result when the internal charges of a single sub-induction layer 131 cancel each other out. When symmetrically arranged and the thicknesses of different sub-induction layers 131 are the same, all sub-induction layers 131 can stably support the touch layer 12. The multiple sub-induction layers 131 of the induction layer 13 can also be other settings, and this application is not limited to this, that is, those skilled in the art can adjust or set according to specific requirements.

[0053] In some embodiments, referring to Figures 3 to 8As shown, two adjacent sub-sensing layers 131 may be spaced apart to provide a first ground layer 14, and the spacing distance between two adjacent sub-sensing layers 131 may be less than the distance between two opposite side edges on any one of the sub-sensing layers 131 forming the spacing distance. In other words, the sub-sensing layer 131 and the first ground layer 14 may be on the same layer, and the first ground layer 14 may be located between adjacent sub-sensing layers 131. Meanwhile, the spacing distance between two adjacent sub-sensing layers 131 is less than the length between two opposite edges of any one of the two sub-sensing layers 131 forming the spacing distance. Other arrangements may also be made between two adjacent sub-sensing layers 131, and this application is not limited thereto, that is, those skilled in the art may adjust or set according to specific requirements.

[0054] Among them, the signal output calculation method of multiple sub-sensing layers 131 may be:

[0055] │CH1-CH0│+│CH2-CH0│+│CH3-CH0│+│CH4-CH0│+…

[0056] │CHN-CH0│, where CH1, CH2, CH3, CH4,..., CHN are the deformation signals sensed by the corresponding multiple sub-sensing layers 131 respectively. CH0 may be the electrode of the first ground layer 14, which may be a reference electrode, and its value may be zero. The signal output calculation method of multiple sub-sensing layers 131 may also be other calculation methods, and this application is not limited thereto, that is, those skilled in the art may adjust or set according to specific requirements.

[0057] When the area of the sensing layer 13 laid flat is larger, the amount of signal obtained by the sensing layer 13 may be larger. Therefore, the spacing between multiple sub-sensing layers 131 may be as small as possible to cover as much as possible the entire surface of the touch layer 12 facing the display layer 11, so that the amount of signal obtained is larger. Here, the spacing distance between two adjacent sub-sensing layers 131 may be less than the distance between two opposite side edges on any one of the sub-sensing layers 131 forming the spacing distance, so as to achieve a large area when the sensing layer 13 is laid flat. For example: Refer to Figure 5 As shown, four sub-sensing layers 131 in a rectangular shape and of the same size may be evenly laid flat between the display layer 11 and the touch layer 12, and the spacing distance between two adjacent sub-sensing layers 131 may be less than the distance between two opposite side edges on any one of the sub-sensing layers 131 forming the spacing distance.

[0058] In this embodiment, the first grounding layer 14 can ground the circuit layers on both sides of the first grounding layer 14 to improve the safety of the touch display device 10. Moreover, by disposing the first grounding layer 14 in the sensing layer 13, the number of layers of the touch display device 10 can be reduced, thereby reducing the thickness of the touch display device 10. The thickness of the first grounding layer 14 can be the same as that of the sub-sensing layer 131, so that the multiple sub-sensing layers 131 and the first grounding layer 14 can cooperate to support the touch layer 12 more stably.

[0059] In some embodiments, referring to Figure 5 and Figure 6 as described above, the display layer 11 and the touch layer 12 can both be rectangular. The peripheral side edges of the display layer 11 and the touch layer 12 can be flush. A setting space can be formed between the display layer 11 and the touch layer 12. The four sub-sensing layers 131 can be evenly distributed in the setting space. That is to say, the four sub-sensing layers 131 can be tiled at equal intervals in the four quadrants of the setting space between the touch layer 12 and the display layer 11. Each sub-sensing layer 131 can detect the pressure value within the corresponding quadrant, and the obtained pressure value can be transmitted to the processor for processing to confirm whether there is a false touch. Here, the signal output calculation method of the four sub-sensing layers 131 can be: │CH1-CH0│+│CH2-CH0│+│CH3-CH0│+│CH4-CH0│, where CH1, CH2, CH3, and CH4 can be the deformation signals sensed by the four sub-sensing layers 131 respectively, and CH0 can be the electrode of the first grounding layer 14, which can be a reference electrode and its value can be zero.

[0060] In this embodiment, the display layer 11 and the touch layer 12 can both be rectangular. Since the manufacturing process for rectangular structures is already very mature, the manufacturing processes of the display layer 11 and the touch layer 12 are simple and more efficient. The peripheral side edges of the display layer 11 and the touch layer 12 can be flush, so that the peripheral side edges of the display layer 11 and the touch layer 12 have a flush visual effect. The four sub-sensing layers 131 can be evenly distributed in the setting space to reduce the probability of signal cancellation and undetectable signal volume while stably supporting the touch layer 12.

[0061] In some embodiments, referring to Figure 1As shown, the sub-sensing layer 131 may include a detection layer 1311 and a conversion layer 1312. The detection layer 1311 and the conversion layer 1312 may be stacked between the touch layer 12 and the display layer 11, and the conversion layer 1312 may be electrically connected to the detection layer 1311 to convert the pressure detected by the detection layer 1311 into an electrical signal. Among them, the detection layer 1311 may include a capacitive sensor or a piezoelectric sensor. The detection layer 1311 may be a pressure detection layer. When a pressure is applied from the touch layer 12 towards the display layer 11, the charges in the detection layer 1311 may generate a polarization phenomenon, and a current signal may be formed through the conversion layer 1312 and flow into devices such as a processor for processing. Among them, both the detection layer 1311 and the conversion layer 1312 of the sub-sensing layer 131 may be layer structures, and the detection layer 1311 may include a capacitive sensor or a piezoelectric sensor. Both the capacitive sensor and the piezoelectric sensor may be provided with a piezoelectric material layer, so that the sub-sensing layer 131 may be a thin film layer with a relatively small thickness, thereby reducing the thickness of the touch display device 10 as much as possible in the thickness direction of the touch display device 10. Moreover, the capacitive sensor and the piezoelectric sensor may generate a first charge and a second charge with a quantity less than the first charge when subjected to pressure. The sub-sensing layer 131 may also be other settings, and this application is not limited thereto, that is, those skilled in the art may adjust or set according to specific requirements.

[0062] Here, Figure 1 the conversion layer 1312 in may include a second metal layer 166 provided thereon, and the second metal layer 166 may be used to transmit the detection signal of the detection layer 1311 to the conversion layer 1312 to form a current signal. The signal transmission between the conversion layer 1312 and the detection layer 1311 may also be other settings, and this application is not limited thereto, that is, those skilled in the art may adjust or set according to specific requirements.

[0063] In some embodiments, the touch display device 10 may include a first channel and a second channel. The first channel may be connected to the conversion layer 1312 and may be provided with a first signal amplifier; the second channel may be connected to the conversion layer 1312 and may be provided with a second signal amplifier, and the amplification factor of the second signal amplifier may be less than that of the first signal amplifier. When the amount of the deformation signal is less than a preset deformation signal amount, the electrical signal may be transmitted through the first channel; when the amount of the deformation signal is greater than the preset deformation signal amount, the electrical signal may be transmitted through the second channel. That is to say, when the amount of the deformation signal sensed by the sensing layer 13 is relatively small, it may be amplified through the first channel with a high amplification factor; while when the amount of the signal sensed by the sensing layer 13 is relatively large, it may be amplified through the second channel with a low amplification factor. In this way, the influence of small signals being shielded or discarded on the detection accuracy can be reduced, thereby improving the accuracy of mis-touch result judgment.

[0064] Here, the touch display device 10 can also be provided with a filter to shield the signal interference of the touch layer 12 and the display layer 11 on the sensing layer 13.

[0065] In some embodiments, the touch display device 10 may include: a controller (MCU), the controller can be respectively connected to the first channel and the second channel, and can control the output of the sum of the deformation signal amounts of a plurality of sub-sensing layers 131. That is to say, the controller can calculate the deformation signal amounts of a plurality of sub-sensing layers 131 through the formula │CH1│+│CH2│+│CH3│+│CH4│+……+│CHN│ or │CH1-CH0│+│CH2-CH0│+│CH3-CH0│+│CH4-CH0│+……

[0066] +│CHN-CH0│ to determine the deformation signal amounts of a plurality of sub-sensing layers 131, and then can judge the pressure value accordingly to confirm whether it is a false touch. Here, the first channel and the second channel can amplify the signal amount to improve the accuracy of the false touch result judgment, and the controller can perform a sum operation on the amplified deformation signal amounts of the first channel and the second channel, so that the deformation signal amounts of all sub-sensing layers 131 participate in the confirmation of whether it is a false touch, thereby making the confirmation of the false touch result more accurate.

[0067] In some embodiments, as shown in Figure 1 the touch display device 10 may include: a circuit layer 151, a second conductive layer 153, and an insulating layer 154. One side of the circuit layer 151 can be connected to the side of the conversion layer 1312 close to the touch layer 12 through the first conductive layer 152, and can be connected to the first side of the second ground layer 155; one side of the second conductive layer 153 can be respectively connected to the side of the conversion layer 1312 close to the display layer 11, and can be connected to the second side of the second ground layer 155 opposite to the first side; the insulating layer 154 can cover the surface of the second conductive layer 153 close to the display layer 11.

[0068] The circuit layer 151 can be a flexible printed circuit (FPC), the first conductive layer 152 and the second conductive layer 153 can be conductive metals, and the insulating layer 154 can be a layer structure made of insulating materials. When the insulating layer 154 covers the surface of the second conductive layer 153 close to the display layer 11, the second conductive layer 153 and the insulating layer 154 cooperate to form a single-sided conductive material.

[0069] Among them, the circuit layer 151 can transmit the electrical signals converted by the conversion layer 1312 to the processor; the circuit layer 151 and the second conductive layer 153 can be connected to the same second grounding layer 155, so as to reduce the number of grounding structures and lower the manufacturing cost of the touch display device 10; the insulating layer 154 covers the surface of the second conductive layer 153 close to the display layer 11, so as to shield the electromagnetic waves generated when the second conductive layer 153 conducts electricity, thereby reducing the noise influence.

[0070] In one example, refer to Figure 1 , Figure 5 , Figure 6 , Figure 9 and Figure 10As shown, the touch display device 10 may include: a touch layer 12, a first optical adhesive layer 161, a first metal layer 162, a third grounding layer 163, a second optical adhesive layer 164, a sensing layer 13, a fourth optical adhesive layer 167, a third metal layer 168, a fourth grounding layer 169, a fifth optical adhesive layer 170, and a display layer 11, which are stacked in sequence; wherein, the first optical adhesive layer 161 can be used to bond the touch layer 12 and the first metal layer 162, the first metal layer 162 can be used to transmit the touch signal of the touch layer 12 to the processor for processing, the third grounding layer 163 can be used to ground the first metal layer 162, the second optical adhesive layer 164 can be used to bond the third grounding layer 163 and the sensing layer 13, the fourth optical adhesive layer 167 can be used to bond the sensing layer 13 and the third metal layer 168, the third metal layer 168 can be used to transmit the display signal processed by the processor to the display layer 11, the fourth grounding layer 169 can be used to ground the third metal layer 168, and the fifth optical adhesive layer 170 can be used to bond the fourth grounding layer 169 and the display layer 11; the sensing layer 13 may include: four sub-sensing layers 131 arranged flat and symmetrically in pairs, and a first grounding layer 14 covers the intervals between the plurality of sub-sensing layers 131. Each sub-sensing layer 131 may include: a detection layer 1311, a third optical adhesive layer 165, and a conversion layer 1312. The detection layer 1311 is used to detect the pressure signal from the touch layer 12 to the display layer 11. The third optical adhesive layer 165 is used to bond the detection layer 1311 and the second metal layer 166 on the conversion layer 1312. When subjected to the pressure from the touch layer 12 towards the display layer 11, the charges in the detection layer 1311 generate a polarization phenomenon and are transmitted to the conversion layer 1312 through the second metal layer 166 and then form a current signal flowing into devices such as the processor for processing. Moreover, the touch display device 10 may further include: a circuit layer 151, a second conductive layer 153, and an insulating layer 154. One side of the circuit layer 151 can be connected to the side of the conversion layer 1312 close to the touch layer 12 through a first conductive layer 152 and can be connected to the first side of the second grounding layer 155; one side of the second conductive layer 153 can be respectively connected to the side of the conversion layer 1312 close to the display layer 11 and can be connected to the second side of the second grounding layer 155 opposite to the first side; the insulating layer 154 can cover the surface of the second conductive layer 153 close to the display layer 11.In addition, the touch display device 10 may further include: a first channel, a second channel, and a controller. The first channel may be connected to the conversion layer 1312 and may be provided with a first signal amplifier; the second channel may be connected to the conversion layer 1312 and may be provided with a second signal amplifier, and the amplification factor of the second signal amplifier may be less than that of the first signal amplifier. When the amount of the deformation signal is less than a preset deformation signal amount, the electrical signal may be transmitted through the first channel; when the amount of the deformation signal is greater than the preset deformation signal amount, the electrical signal may be transmitted through the second channel. The controller may be respectively connected to the first channel and the second channel and may control the output of the sum of the deformation signal amounts of the plurality of sub-sensing layers 131.

[0071] Here, the thickness range of the first optical adhesive layer 161 may be 70 - 80 μm, so that the distance between the touch layer 12 and the detection layer 1311 can be shorter. In this way, the response speed during the detection of the detection layer 1311 can be faster and more sensitive, thereby optimizing the performance of the detection layer 1311. For example, the thickness of the first optical adhesive layer 161 is 75 μm. The fifth optical adhesive layer 170 may have a low dielectric constant and a thickness range of 190 - 210 μm. The low dielectric constant can reduce the sensitivity of the fifth optical adhesive layer 170 to external electromagnetic interference, so as to weaken the influence of external interference, thereby reducing noise. Figure 10 The partial circuit structure diagram of the touch display device 10 is shown. Among them, Pico leaf may be the sensing layer 13; Amp may be provided with a first channel and a second channel, and can amplify the signals detected by the sensing layer 13 to enhance the detected signals; Force IC can store, transmit, process, etc. the sensing signals of the sensing layer 13; Power IC can supply power to Force IC.

[0072] In a second aspect

[0073] The present disclosure provides an electronic device 100. Refer to Figure 11 As shown, it may include: a touch display device 10. The touch display device 10 may include: a display layer 11, a touch layer 12, and a sensing layer 13. The touch layer 12 may be disposed on the light-emitting side of the display layer 11; the sensing layer 13 may be disposed between the display layer 11 and the touch layer 12 and may meet the light-transmitting condition. When the touch layer 12 is subjected to a force in the direction of the display layer 11, the sensing layer 13 may sense the pressure transmitted by the touch layer 12 to the display layer 11 and may generate a first charge perpendicular to the display layer 11 and a second charge parallel to the display layer 11, and the number of the first charges may be greater than the number of the second charges.

[0074] The electronic device 100 can be a device with a display screen, and the display screen can include: a touch display device 10. For example, the electronic device 100 can be a tablet computer or a single-screen laptop with a display screen and a physical button area; the electronic device 100 can also be a device with multiple display screens, and at least one of the multiple display screens can include: a touch display device 10. For example, Figure 11 the dual-screen laptop shown, and one of the screens has the function of touch input for information.

[0075] See Figure 11 As shown, the electronic device 100 can include: a first body 20 and a second body 30 that can rotate relative to each other to achieve relative opening and closing. The first body 20 can be provided with a first display screen 21, and the second body 30 can be provided with a second display screen 31. When the first body 20 and the second body 30 rotate relative to each other and close, the first display screen 21 and the second display screen 31 can face each other; wherein, the second display screen 31 can include a touch display device 10. When the touch display device 10 is touched, the display content of the first display screen 21 can be controlled to change. Here, the electronic device 100 can have a first usage state and a second usage state. In the first usage state, the first display screen 21 and the second display screen 31 can display different contents respectively. For example, the first display screen 21 can display video content, and the second display screen 31 can display a word document. In this way, the user can learn through the video playback while recording learning notes through the word document; or for example, the first display screen 21 can display a part of the video content, and the second display screen 31 can display another part of the video content. At this time, the first display screen 21 and the second display screen 31 can cooperate to completely display the video content, and the screen size is larger than when the first display screen 21 or the second display screen 31 displays the video content alone; in the second usage function state, the first display screen 21 can display contents such as text and images, and the second display screen 31 can be used as a virtual keyboard for touch control to change the display content of the first display screen 21. At the same time, the sensing layer 13 of the second display screen 31 can perform pressure detection to reduce the situation of controlling the display content of the first display screen 21 in the case of accidental touch. The number of first charges generated during the detection process by the sensing layer 13 is greater than the number of second charges. In this way, the ratio of the number of charges perpendicular to the display area to the total number of charges generated by the sensing layer 13 can be increased, so that the accuracy of the detected pressure value is higher, and thus the determination of the accidental touch result is more accurate.

[0076] It should be noted that the touch display device in the electronic device provided by the present disclosure is similar to the description of the touch display device embodiment above, and has beneficial effects similar to those of the touch display device embodiment above. For the technical details not disclosed in the electronic device embodiment of the present disclosure, please refer to the description of the touch display device embodiment in the present disclosure for understanding, and will not be elaborated here.

[0077] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0078] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A touch display device, characterized in that: include: Display layer; A touch layer, disposed on the light-emitting side of the display layer; The sensing layer is arranged between the display layer and the touch layer and meets the light transmission condition; when the touch layer is subjected to a force in the direction of the display layer, the sensing layer senses the pressure transmitted from the touch layer to the display layer, and generates a first charge perpendicular to the display layer and a second charge parallel to the display layer, and the amount of the first charge is greater than the amount of the second charge.

2. The touch display device according to claim 1, characterized in that: The sensing layer includes a plurality of sub-sensing layers to form a sensor network, and the plurality of sub-sensing layers are laid flat and are respectively opposite to the touch layer; when a pressing position of the touch layer is subjected to a force acting in the direction of the display layer, the plurality of sub-sensing layers respectively have different deformations to generate different deformation signals.

3. The touch display device according to claim 2, characterized in that: The sensing layer includes an even number of sub-sensing layers, which are symmetrically arranged in pairs.

4. The touch display device according to claim 2, characterized in that: Two adjacent sub-sensing layers are spaced apart to form a first grounding layer, and a spacing distance between two adjacent sub-sensing layers is smaller than a distance between two side edges facing each other on any sub-sensing layer forming the spacing distance.

5. The touch display device according to claim 4, characterized in that: The display layer and the touch layer are both rectangular, a circle of side edges of the display layer and a circle of side edges of the touch layer are flush, and a setting space is formed between the display layer and the touch layer; The four sub-sensing layers are evenly distributed in the setting space.

6. The touch display device according to claim 2, characterized in that: The sub-sensing layer includes: a detection layer and a conversion layer, wherein the detection layer and the conversion layer are stacked between the touch layer and the display layer, and the conversion layer is electrically connected to the detection layer to convert the pressure detected by the detection layer into an electrical signal; Wherein, the detection layer includes: a capacitive sensor or a piezoelectric sensor.

7. The touch display device according to claim 6, characterized in that: include: A first channel connected to the conversion layer and provided with a first signal amplifier; A second channel is connected to the conversion layer and is provided with a second signal amplifier, wherein the amplification factor of the second signal amplifier is smaller than the amplification factor of the first signal amplifier; When the deformation signal amount of the deformation signal is less than the preset deformation signal amount, the electrical signal is transmitted through the first channel; when the deformation signal amount is greater than the preset deformation signal amount, the electrical signal is transmitted through the second channel.

8. The touch display device according to claim 7, characterized in that: include: The controller is connected to the first channel and the second channel respectively, and controls the output of the sum of the deformation signal quantities of the plurality of sub-sensing layers.

9. The touch display device according to claim 6, characterized in that: include: A circuit layer, one side of which is connected to a side of the conversion layer close to the touch layer through a first conductive layer, and is connected to a first side of the second ground layer; A second conductive layer, one side of which is respectively connected to a side of the conversion layer close to the display layer, and is connected to a second side of the second grounding layer opposite to the first side; An insulating layer covers a surface of the second conductive layer close to the display layer.

10. An electronic device, characterized in that: include: A touch display device, comprising: Display layer; A touch layer, disposed on the light-emitting side of the display layer; The sensing layer is arranged between the display layer and the touch layer and meets the light transmission condition; when the touch layer is subjected to a force in the direction of the display layer, the sensing layer senses the pressure transmitted from the touch layer to the display layer, and generates a first charge perpendicular to the display layer and a second charge parallel to the display layer, and the amount of the first charge is greater than the amount of the second charge.

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