Electronic keyboard module
Patent Information
- Application Number
- DE202025102369
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-10-23
- Estimated Expiration
- 2035-04-30
Smart Images

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Abstract
Description
BACKGROUND Technical Area
[0001] The present disclosure relates to a keyboard module and, in particular, to an electronic keyboard module. Description of the state of the art
[0002] With the ever-increasing computing power of processors, modern electronic musical instruments are capable of generating a wide variety of effects and sounds. Due to the different sound generation principles between electronic and traditional musical instruments, some electronic instruments can produce effects and sounds that traditional instruments cannot. For example, piezoelectric sensor technology can be applied to an electronic piano, allowing it to create an aftertouch effect that a conventional piano cannot. However, the aftertouch function of an electronic keyboard is a mono aftertouch. In other words, all the keys share a single aftertouch sensor (piezoresistive sensor).Even if several keys are pressed simultaneously, only the aftertouch of one of the keys can be reproduced, which limits the player in terms of sound richness and emotional expression. SUMMARY
[0003] Therefore, the present disclosure creates an electronic keyboard module that is advantageous for improving the execution of the aftertouch effect.
[0004] In one aspect of the present disclosure, the electronic keyboard module is provided. The electronic keyboard module comprises a keyboard mount, a keyboard, a conductive film, and a force-sensing resistance circuit board. The keyboard is located on the keyboard mount and comprises several keys and several key height limit posts arranged one-to-one on the lower surfaces of the keys. The conductive film is located beneath the keyboard and comprises an insulating layer and several conductive areas. The insulating layer is located beneath the key height limit posts, and the conductive areas are spaced apart on the insulating layer. The conductive areas are arranged one-to-one beneath the keys, and the insulating layer is located between the key height limit posts and the conductive areas.The force-sensing resistance circuit board is located beneath the conductive film, and the conductive film is positioned between the keypad and the force-sensing resistance circuit board. The force-sensing resistance circuit board contains multiple electrode units arranged one-to-one beneath the conductive areas of the conductive film. When at least one key is pressed, the key height limit posts beneath at least one key contact the conductive film, so that the conductive areas corresponding to at least one key contact and are electrically connected to the corresponding electrode units.
[0005] According to at least one example of the present disclosure, the electronic keyboard module also includes a touch-activated sound effect module. The touch-activated sound effect module is electrically connected to the force-sensing resistor circuit board and configured to receive a piezoelectric signal from the force-sensing resistor circuit board. When the conductive areas touch the corresponding electrode units and are electrically connected to them, the force-sensing resistor circuit board outputs the piezoelectric signal described above.
[0006] According to at least one example of the present disclosure, each of the key height limiting posts has a plane, and the plane faces the conductive film, the area of the plane being greater than or equal to the area of each of the conductive regions.
[0007] According to at least one example in the present disclosure, the thickness of the conductive areas is in a range of 0.01 mm to 0.04 mm.
[0008] According to at least one example in the present disclosure, the insulating layer is a polyester film.
[0009] According to at least one example of the present disclosure, the insulating layer comprises several positioning grooves arranged one-to-one between the electrode units and the buttons. The opening of each of the positioning grooves faces the force-sensing resistance circuit board, and the conductive areas are arranged one-to-one on the bottom surface of each of the positioning grooves.
[0010] According to at least one example in the present disclosure, the distance between the opening and the bottom surface of the positioning grooves is greater than the thickness of the conductive areas.
[0011] According to at least one example in the present disclosure, the distance between the opening and the bottom surface of the positioning grooves is in a range of 0.06 mm and 0.07 mm.
[0012] According to at least one example of the present disclosure, the electronic keyboard module further comprises several elastic bodies arranged one-to-one beneath the key height limit posts and between the key height limit posts and the conductive film. When at least one of the keys is in the pressed state, the key height limit posts beneath at least one of the keys, in the pressed state, contact the conductive film through the elastic bodies, such that the conductive areas corresponding to at least one of the keys contact the corresponding electrode units and are electrically connected to them.
[0013] According to at least one example of the present disclosure, the depressed state is maintained from an initial time to a complete time, and the contact area of one of the elastic bodies and one of the electrode units is gradually increased.
[0014] According to at least one example of the present disclosure, each of the elastic bodies has a plane, and the plane faces the conductive film. The area of the plane of the elastic bodies is greater than or equal to the area of each of the conductive regions.
[0015] According to at least one example of the present disclosure, the electronic keyboard additionally includes an elastic positioning post arranged at intervals on the elastic bodies, and the height of the elastic positioning post is greater than the height of the elastic bodies. When pressed, the key height limit posts contact the elastic positioning post.
[0016] In one aspect of the present disclosure, the electronic keyboard module is provided. The electronic keyboard module comprises a keyboard mount, a keyboard, a conductive film, and a force-sensing resistance circuit board. The keyboard is located on the keyboard mount and comprises several keys and several key height limit posts. Each key is connected to the keyboard mount at one end by a spring, while the other end protrudes from the keyboard mount. The key height limit posts are arranged one-to-one on the undersides of the keys. The conductive film is located beneath the keyboard and comprises an insulating layer and several conductive areas. The insulating layer is located beneath the key height limit posts, and the conductive areas are spaced apart from one another on the insulating layer.The conductive areas are arranged one-to-one beneath the keys, and the insulating layer is located between the key height limit posts and the conductive areas. The force-sensing resistance circuit board is located beneath the conductive film, and the conductive film is located between the keypad and the force-sensing resistance circuit board. The force-sensing resistance circuit board contains multiple electrode units arranged one-to-one beneath the conductive areas of the conductive film. When at least one of the keys is in a pressed state, the key height limit posts beneath at least one of the keys contact the conductive film, allowing the conductive areas corresponding to at least one of the keys to contact and be electrically connected to the corresponding electrode units.
[0017] According to at least one example of the present disclosure, the plane of the key height limiting posts is substantially aligned with a top surface of the conductive area of the conductive film when one of the keys is in the pressed state.
[0018] According to at least one example of the present disclosure, the electronic keyboard further comprises several elastic bodies, wherein the plane of the elastic bodies is substantially aligned with the top surface of the conductive area of the conductive film when one of the keys is in the pressed state.
[0019] Because of the above, since the conductive areas of the electronic keyboard's conductive film are arranged one-to-one beneath the key height limit posts, the keys, when pressed, push the key height limit posts downwards to make contact with the conductive film. This pushes the conductive areas distributed throughout the film toward the force-sensing resistor circuit board, allowing the conductive areas to electrically connect to the electrode units located on the force-sensing resistor circuit board. Since each key corresponds to one conductive area and one electrode unit, each key can generate independent aftertouch effects to enhance the expressiveness of the game.On the other hand, the areas of the key height limit posts that are in contact with the conductive areas via the elastic bodies are essentially the same size. Therefore, the contact force between the conductive areas and the electrode units can be distributed evenly, thus improving the stability of the aftertouch effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The implementation of this disclosure can be understood by means of the following detailed description and graphic overview. It should be noted that the various features are not drawn in industry-standard proportions. Rather, the dimensions of the various features may be arbitrarily enlarged or reduced for the sake of clarity in the discussion. Fig. Figure 1 shows a perspective view of an electronic keyboard module according to an example of the present disclosure. Fig. Figure 2 shows a cross-sectional view along the section plane C of the electronic keyboard module, as in the example of Fig. 1 is shown. Fig. Figure 3 shows a partial exploded view of the electronic keyboard module according to an example in the present disclosure. Fig. Figure 4 shows a perspective partial view of the conductive film of the electronic keyboard module according to an example of the present disclosure. Fig. Figure 5 shows a perspective view of the force-measuring resistance circuit board of the electronic keyboard module according to an example of the present disclosure. Fig. Figure 6A shows a cross-sectional view along the section plane C of the electronic keyboard module in the pressed state, as in the example of Fig. 1 shown. Fig. Figure 6B shows a schematic diagram of the change in the contact area between the elastic bodies and the electrode units according to at least one example of the present disclosure. Fig. shows a perspective partial view of the electronic keyboard module according to an example of the present disclosure. Fig. shows a perspective partial view of the electronic keyboard module according to an example of the present disclosure. DETAILED DESCRIPTION
[0021] The present disclosure is described in detail with reference to the following examples. It should be noted that the following description of examples of the present disclosure serves only for illustration and is not intended to exhaustively describe all embodiments or to limit the specific embodiments of the present disclosure. For example, the description "a first feature is formed on a second feature" encompasses a multitude of embodiments, including the first feature being in direct contact with the second feature and additional features being formed between the first and second features, such that the first and second features may not be in direct contact with each other. Furthermore, the same component symbols are used in the drawings and the description, which, as far as possible, denote the same or similar components.
[0022] In the following text, the dimensions (e.g., length, width, thickness, and depth) of the components (e.g., layers, films, substrates, and surfaces, etc.) in the drawings are enlarged to varying proportions to clearly illustrate the technical features of this disclosure. Accordingly, the illustrations and explanations of the following embodiments are not limited to the dimensions and shapes of the components shown in the drawings, but are also intended to cover, for example, dimensions, shapes, and deviations therefrom resulting from actual processes and / or tolerances. For instance, the flat surfaces shown in the drawings may have rough and / or non-linear features, and the acute angles shown in the drawings may be rounded.Therefore, the components shown in the drawings of the present disclosure serve mainly for illustration and are neither intended to accurately represent the actual shape of the components nor to limit the scope of the claims applicable to the present disclosure.
[0023] With joint reference to the Fig. 1 and Fig. 2 shows Fig. 1 a perspective view of an electronic keyboard module 100 at least one example of the present disclosure, and Fig. Figure 2 shows a sectional view along the section plane C of the electronic keyboard module 100. The electronic keyboard module 100 comprises the keyboard bracket 110, the keyboard 120, the conductive film 140, and the force-sensing resistance circuit board 160. The keyboard 120 is located on the keyboard bracket 110 and comprises the multiple keys 122 and the multiple key height limiting posts 124. The key height limiting posts 124 are arranged one-to-one on the lower surfaces 122s of the keys 122; in other words, the key height limiting posts 124 are located beneath the keys 122, and one key height limiting post 124 corresponds to one key 122.
[0024] The keyboard 120 comprises several white keys and several black keys. A general electronic keyboard, for example, comprises 49, 61, or 88 keys 122, and the configurations of the keys 122 may be similar to those of the general keys, which is why they may not be repeated here. In the present example, one end of each key 122 is connected to the keyboard bracket 110 by a spring, and the other end of each key 122 protrudes from the keyboard bracket 110.
[0025] With joint reference to Fig. 3 and Fig. 4 illustrated Fig. 3 a partial exploded view of the electronic keyboard module 100 from at least one example of the present disclosure, in which the conductive film 140 is arranged under the keyboard 120, and Fig. Figure 4 illustrates a perspective partial view of the conductive film 140 from at least one example of the present disclosure. The conductive film 140 is arranged below the key height limiting posts 124 of the keyboard 120, and the conductive film 140 comprises the insulating layer 142 and the multiple conductive areas 144. The insulating layer 142 is arranged below the key height limiting posts 124 of the keyboard 120, and the conductive areas 144 are spaced apart from one another on the insulating layer 142. Specifically, the conductive areas 144 are arranged on the underside 142f of the insulating layer 142, and the underside 142f faces away from the keyboard 120 and towards the force-measuring resistance circuit board 160. In particular, the conductive areas 144 are arranged one-to-one below the keys 122, and the insulating layer 142 is located between the key height limiting posts 124 and the conductive areas 144.
[0026] Referring to Fig. 4, shows Fig. 4 A perspective partial view of the conductive film 140 from at least one example of the present disclosure. The insulating layer 142 of the conductive film 140 can be a polyester film, such as polyethylene terephthalate (PET), and the thickness of the insulating layer 142 is in the range of 0.06 mm to 0.07 mm. The material of the conductive areas 144 of the conductive film 140 can comprise, but is not limited to, carbon, graphene, or thinner conductive materials, and the thickness of the conductive areas 144 is in the range of 0.01 mm to 0.04 mm. In particular, the conductive film 140 can be a layer of polyethylene terephthalate (e.g., Mylar) coated with a conductive material (e.g., toner), and the conductive material can be formed on the polyethylene terephthalate by a process such as screen printing.
[0027] With joint reference to Fig. 2 and Fig. 3. The force-sensing resistance circuit board 160 is arranged under the conductive film 140, and the conductive film 140 is located between the keyboard 120 and the force-sensing resistance circuit board 160. On the other hand, the Fig. 3 and Fig. 5 referred to, whereby Fig. Figure 5 shows a perspective view of the force-sensing resistance circuit board 160. The force-sensing resistance circuit board 160 comprises several electrode units 162, and the electrode units 162 are arranged one-to-one under the conductive areas 144 of the conductive film 140.
[0028] Back to Fig. 3. In detail, the electronic keyboard module 100 of the present example can comprise several elastic bodies 180. The elastic bodies 180 are arranged one-to-one beneath the key height limiting posts 124 and between the key height limiting posts 124 and the conductive film 140. When at least one of the keys 122 is in the pressed state, the key height limiting posts 124 beneath the pressed keys 122 contact the conductive film 140 through the elastic bodies 180, allowing the conductive areas 144 corresponding to the keys 122 (i.e., the keys 122 in the pressed state) to contact the corresponding electrode units 162 and be electrically connected to them.
[0029] In other words, each of the buttons 122, when pressed, can exert a force (i.e., a downward force) on the insulating layer 142 of the conductive film 140 through the elastic bodies 180 beneath the buttons 122, thereby enabling the conductive areas 144 beneath the insulating layer 142 to move (downwards) and come into direct contact with the electrode units 162 of the force-sensing resistance circuit board 160, thus establishing the electrical connection between the conductive areas 144 and the electrode units 162. The elastic bodies 180 can comprise, but are not limited to, elastic materials such as silica gel.
[0030] In other examples, however, the electronic keyboard module 100 may not contain the elastic bodies 180. In other words, the key height limiting posts 124 under the keys 122, when pressed, can be in direct contact with the conductive film 140 and exert a force (i.e., the downward force) on the insulating layer 142 of the conductive film 140, thereby allowing the conductive areas 144 under the insulating layer 142 to move downwards and come into direct contact with the force-sensing resistance circuit board 160, thus establishing the electrical connection between the conductive areas 144 and the force-sensing resistance circuit board 160.
[0031] Fig. Figure 6A shows a sectional view of the keys 122 in the pressed state from at least one example of the present disclosure. When one of the keys 122 is in the pressed state, the key height limiting posts 124 under one of the keys 122 can be in contact with the conductive foil 140, whereby the conductive areas 144 corresponding to one of the keys 122 can be in contact with and electrically connected to the corresponding electrode units 162. Fig. Figure 6B shows a schematic diagram of the change in the contact area of the elastic bodies 180 and the electrode units 162 of at least one example of the present disclosure. The compressed state described above is maintained from the initial time t0 to the final time t1, and the contact area CA of one of the elastic bodies 180 and one of the electrode units 162 is gradually increased between the initial time t0 and the final time t1.
[0032] In detail, when the keys 122 are subjected to a downward force, the areas of the elastic bodies 180 adjacent to the keyboard support 110 can initially be in contact with the electrode units 162. As the downward force increases, the contact area can gradually increase along the force direction S1. In other words, the maximum contact area CA can be less than or equal to the area of the plane 124p of the key height limiting posts 124 from the initial time t0 to the final time t1.
[0033] As in Fig. As shown in Figure 5, the electronic keyboard module 100 also includes the touch-activated sound effect module 190, which is electrically connected to the force-sensing resistor circuit board 160. The touch-activated sound effect module 190 is configured to receive the piezoelectric signal from the force-sensing resistor circuit board 160. Specifically, when the conductive areas 144 are in contact with and electrically connected to the corresponding electrode units 162, the force-sensing resistor circuit board 160 outputs a piezoelectric signal. This piezoelectric signal can be transmitted to the touch-activated sound effect module 190. After the touch-activated sound effect module 190 has received the piezoelectric signal, it can be converted into the aftertouch effect by an audio function program.In particular, each of the electrode units 162 can generate the piezoelectric signal and convert the piezoelectric signal into an individual aftertouch effect by means of the touch-activated sound effect module 190, since the conductive areas 144 of the conductive foil 140 correspond to each electrode unit 162.
[0034] Fig. 7A and Fig. Figure 7B shows the perspective partial view of the electronic keyboard module 100 of at least one example of the present disclosure, wherein Fig. 7A the keys 122 and the key height limit posts 124 and Fig. 7A contains the elastic bodies 180. As in Fig. As shown in Figure 7A, each of the key height limiting posts 124 has the plane 124p, and the plane 124p faces the conductive film 140. The area of the plane 124p is greater than or equal to the area of the conductive areas 144. On the other hand, as shown in Fig. As shown in Figure 7B, each of the elastic bodies 180 faces the plane 180p in the example with the elastic bodies 180. The plane 180p is facing the conductive foil 170, and the area of the plane 180p is greater than or equal to the area of the conductive areas 144.
[0035] Therefore, when one of the keys 122 is in the depressed state, the plane 124p of the key height limiting posts 124 is substantially aligned with the top surface of the conductive area 144 of the conductive film 140, and the plane 180p of the elastic bodies 180 is also substantially aligned with the top surface of the conductive area of the conductive film, so that the key height limiting posts 124 can exert the force uniformly over the entire area of the conductive area 144 after being depressed. However, the present disclosure is not limited to the foregoing. In various examples, the area of the plane 124p of the key height limiting posts 124 may be smaller than the area of the conductive area 144, and the area of the plane 180p of the elastic bodies 180 may be smaller than the area of the conductive area 144.
[0036] Furthermore, returning to Fig. 4, the insulating layer 142 has several positioning grooves 142c, and the positioning grooves 142c are arranged one-to-one between the keys 122 of the keyboard 120 and the electrode units 162 of the force-measuring resistance circuit board 160. Referring also to Fig. 2, in which the lower surface 142f of the insulating layer 142 of the force-sensing resistance circuit board 160 faces the force-sensing resistance circuit board 160. The opening OP1 of each of the positioning slots 142c faces the force-sensing resistance circuit board 160, and the conductive areas 144 are arranged one-to-one on the bottom surface BS1 of each of the positioning slots 142c. In particular, the distance d1 between the opening OP1 of the positioning slots 142c and the bottom surface BS1 must be greater than the thickness of the conductive areas 144 (not labeled) to prevent the conductive areas 144 from coming into contact with the electrode units 162 without exerting force on the conductive film 140 and deforming it. For example, the thickness of the conductive areas 144 is in the range of 0.01 mm to 0.04 mm, and the distance d1 of the opening OP1 of the positioning grooves 142c and the bottom surface BS1 is in the range of 0.06 mm and 0.07 mm.
[0037] Referring to Fig.7B, the electronic keyboard module 100 also includes the elastic positioning post 185. The elastic positioning post 185 is arranged at intervals on the elastic bodies 180, and the height h1 of the elastic positioning post 185 is greater than the height h2 of the elastic bodies 180. Therefore, the key height limit posts 124 are in contact with the elastic positioning post 185 when pressed. Specifically, when the key height limit posts 124 are pressed downwards, they can initially come into contact with the elastic positioning post 185, thus temporarily pressing against the key height limit posts 124.However, if the pressed state persists and the force exerted by the key height limiting posts 124 on the elastic positioning posts 185 gradually increases, the key height limiting posts 124 continue to press in order to be in contact with the elastic bodies 180.
[0038] Based on the above explanations, since the conductive areas of the electronic keyboard's conductive film are arranged one-to-one beneath the key height limit posts, the keys, when pressed, push the key height limit posts downwards to make contact with the conductive film. This pushes the conductive areas distributed within the film towards the force-sensing resistor circuit board, allowing them to electrically connect to the electrode units located on the force-sensing resistor circuit board. Because each key corresponds to one conductive area and one electrode unit, each key can generate independent aftertouch effects to enhance the expressiveness of the playing.On the other hand, the areas of the key height limit posts that are in contact with the conductive areas (through the elastic bodies) are essentially the same. Therefore, the contact force between the conductive areas and the electrode units can be distributed evenly, thus improving the stability of the aftertouch effect.
Claims
[1] An electronic keyboard module (100), comprising: a keyboard mount (110); a keyboard (120) which is arranged on the keyboard bracket (110) and includes the following: a large number of keys (122); and a plurality of key height limiting posts (124) arranged one-to-one on the lower surfaces (122s) of the keys (122); a conductive film (140) located under the keyboard (120) and comprising the following: an insulating layer (142) under the key height limit posts (124); and a plurality of conductive areas (144) spaced apart from one another on the insulating layer (142) and arranged one-to-one under the keys (122), the insulating layer (142) being located between the key height limit posts (124) and the conductive areas (144); and a force-sensing resistance circuit board (160) arranged under the conductive film (140), wherein the conductive film (140) is located between the keyboard (120) and the force-sensing resistance circuit board (160), the force-sensing resistance circuit board (160) comprising: a plurality of electrode units (162) arranged one-to-one under the conductive areas (144) of the conductive film (140); wherein, when at least one of the keys (122) is in a pressed state, the key height limiting posts (124) under at least one of the keys (122) touch the conductive foil (140), whereby the conductive areas (144) corresponding to at least one of the keys (122) can touch the corresponding electrode units (162) and be electrically connected to them. [2] The electronic keyboard module (100) according to claim 1, which further comprises: a touch-activated sound effect module (190) that is electrically connected to the force-sensing resistor circuit board (160) and configured to receive a piezoelectric signal from the force-sensing resistor circuit board (160); wherein the force-measuring resistance conductor plate (160) outputs the piezoelectric signal when the conductive areas (144) touch the corresponding electrode units (162) and are electrically connected to them. [3] Electronic keyboard module (100) according to claim 1, wherein each of the key height limiting posts (124) has a plane (124p) and the plane (124p) faces the conductive film (140), wherein an area of the plane (124p) is greater than or equal to an area of each of the conductive areas (144). [4] Electronic keyboard module (100) according to claim 1, wherein the thickness of the conductive areas (144) is in a range of 0.01 mm to 0.04 mm. [5] Electronic keyboard module (100) according to claim 1, wherein the insulating layer (142) is a polyester film. [6] Electronic keyboard module (100) according to claim 1, wherein the insulating layer (142) comprises: a plurality of positioning grooves (142c) arranged one-to-one between the electrode units (162) and the buttons (122), wherein an opening (OP1) of each of the positioning grooves (142c) points towards the force-sensing resistance circuit board (160), and the conductive areas (144) arranged one-to-one on a bottom surface (BS1) of each of the positioning grooves (142c). [7] Electronic keyboard module (100) according to claim 6, wherein the distance (d1) between the opening (OP1) and the bottom surface (BS1) of each of the positioning grooves (142c) is greater than the thickness of the conductive areas (144). [8] Electronic keyboard module (100) according to claim 7, wherein the distance (d1) between the opening (OP1) and the bottom surface (BS1) of each of the positioning grooves (142c) is in a range of 0.06 mm and 0.07 mm. [9] The electronic keyboard module (100) according to claim 1, which further comprises: a plurality of elastic bodies (180) arranged one-to-one under the key height limiting posts (124) and between the key height limiting posts (124) and the conductive foil (140), wherein, when at least one of the keys (122) is in the pressed state, the key height limiting posts (124) under at least one of the keys (122) touch the conductive foil (140), which allows the conductive areas (144) corresponding to at least one of the keys (122) to touch the corresponding electrode units (162) and be electrically connected to them. [10] Electronic keyboard module (100) according to claim 9, wherein the pressed state is maintained from an initial time (t0) to a complete time (t1) and a contact area (CA) of one of the elastic bodies (180) and one of the electrode units (162) is gradually increased between the initial time (t0) and the complete time (t1). [11] Electronic keyboard module (100) according to claim 9, wherein each of the elastic bodies (180) has a plane (180p) and the plane (180p) faces the conductive film (140), wherein an area of the plane (180p) is greater than or equal to an area of each of the conductive regions (144). [12] Electronic keyboard module (100) according to claim 9, further comprising: an elastic positioning post (185) arranged at intervals on the elastic bodies (180), and a height (h1) of the elastic positioning post (185) is greater than a height (h2) of the elastic bodies (180), wherein the key height limiting posts (124) touch the elastic positioning post (185) in the pressed state. [13] An electronic keyboard module (100), comprising: a keyboard mount (110); a keyboard (120) which is arranged on the keyboard bracket (110) and includes the following: a plurality of keys (122), wherein one end of each key is connected to the keyboard support (110) via a spring and the other end protrudes from the keyboard support (110); and a plurality of key height limiting posts (124) arranged one-to-one on the lower surfaces (122s) of the keys (122); a conductive film (140) located under the keyboard (120) and comprising the following: an insulating layer (142) under the key height limit posts (124); and a plurality of conductive areas (144) spaced apart from one another on the insulating layer (142) and arranged one-to-one under the keys (122), the insulating layer (142) being located between the key height limit posts (124) and the conductive areas (144); and a force-sensing resistance circuit board (160) arranged under the conductive film (140), wherein the conductive film (140) is located between the keyboard (120) and the force-sensing resistance circuit board (160), the force-sensing resistance circuit board (160) comprising: a plurality of electrode units (162) arranged one-to-one under the conductive areas (144) of the conductive film (140); wherein, when at least one of the keys (122) is in a pressed state, the key height limiting posts (124) under at least one of the keys (122) touch the conductive foil (140) to cause the conductive areas (144) corresponding to at least one of the keys (122) to touch and be electrically connected to the corresponding electrode units (162). [14] Electronic keyboard module according to claim 13, wherein a plane (124p) of the key height limiting posts (124) is substantially aligned with a top surface of the conductive area (144) of the conductive film (140) when one of the keys (122) is in the pressed state. [15] Electronic keyboard module according to claim 14, further comprising: a plurality of elastic bodies (180), wherein a plane (180p) of the elastic bodies (180) is substantially aligned with the top of the conductive area (144) of the conductive film (140) when one of the keys (122) is in the pressed state.