Photodiode integrated with Hall induction and photoelectric keyboard

Abstract

The utility model discloses an integrated Hall induction photodiode and a photoelectric keyboard, the photodiode comprises a support, a visible light emitting chip, a fantasy color control chip and a Hall induction chip, the support comprises a base and a plurality of pins, and the base is provided with a first packaging cavity and a second packaging cavity. The visible light emitting chip comprises a red light emitting chip, a green light emitting chip and a blue light emitting chip, the fantasy color control chip and the visible light emitting chip are fixed in the first packaging cavity and packaged through first packaging glue, and the first packaging glue is transparent or semitransparent glue. The Hall sensing chip is fixed in the second packaging cavity and packaged through second packaging glue, and the second packaging glue is light filtering glue. According to the photodiode integrated with Hall induction, the Hall induction loop and the color intrigue control loop are integrated in the same photodiode, so that the photodiode has a Hall electromagnetic induction function and a color intrigue control function at the same time, and in the application process, electronic elements can be reduced, the space of a circuit board can be saved, and wiring can be simplified; and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to a photodiode, in particular to a photodiode and a photoelectric keyboard integrated with Hall induction. Background Art

[0002] With the rapid advancement of science and technology, photodiodes, as a new generation of light sources, have been widely used in people's daily lives and work, and their application areas are expanding day by day. Especially in the field of optomechanical keyboards, photodiodes play a pivotal role.

[0003] Optical mechanical keyboards, a keyboard product that combines advanced optoelectronic technology, have particularly strict requirements on photodiodes. It not only requires photodiodes to have decorative and lighting functions, but also needs to be able to accurately transmit optical signals and achieve precise operational feedback. This undoubtedly poses a higher challenge to the performance and technical indicators of photodiodes.

[0004] However, traditional light-emitting diodes and infrared diodes mostly use separate packaging processes, and each diode has only a single photoelectric characteristic. This means that in the application of optoelectronic mechanical keyboards, in order to achieve the dual functions of lighting decoration and signal transmission, we must use two different optoelectronic components and switch components. This approach not only increases the complexity of circuit design, but also doubles the design difficulty, especially for smaller circuit boards.

[0005] In addition, the use of multiple optoelectronic components will inevitably lead to an increase in product application costs. Whether it is from the purchase of raw materials or the assembly and testing during the production process, more manpower, material resources and financial resources are required. This undoubtedly increases the production cost of the enterprise and reduces the market competitiveness of the product. Utility Model Content

[0006] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to provide a photodiode and a photoelectric keyboard with integrated Hall sensor.

[0007] To achieve the above object, on the one hand, a photodiode with integrated Hall sensor according to an embodiment of the utility model includes:

[0008] A bracket, the bracket comprising a base and a plurality of pins, the base having a first packaging cavity and a second packaging cavity, and the plurality of pins are arranged on the base;

[0009] Visible light emitting chips, the visible light emitting chips comprising a red light emitting chip for emitting red light, a green light emitting chip for emitting green light, and a blue light emitting chip for emitting blue light;

[0010] A magic color control chip, wherein the magic color control chip and the visible light emitting chip are fixed in the first packaging cavity, the first packaging cavity is packaged by a first packaging glue, the first packaging glue covers the magic color control chip and the visible light emitting chip, and the first packaging glue is a transparent or translucent colloid;

[0011] A Hall sensor chip, wherein the Hall sensor chip is fixed in the second packaging cavity, the second packaging cavity is packaged by a second packaging glue, the second packaging glue covers the Hall sensor chip, and the second packaging glue is a light filtering glue;

[0012] Among them, the visible light emitting chip, the magic color control chip and some of the multiple pins are connected to form a magic color control circuit to control the visible light emitting chip to emit different lights, and the Hall sensing chip is connected to some of the multiple pins to form a Hall sensing circuit to perform switch control.

[0013] According to the photodiode with integrated Hall induction provided by the embodiment of the utility model, the Hall induction circuit and the magic color control circuit are integrated in the same photodiode, so that the photodiode has both the Hall electromagnetic induction function and the magic color control function. In specific applications, the Hall induction circuit has the characteristics of fast response, high sensitivity, and strong anti-interference, and can be used as an electromagnetic induction switch. Through the magic color control chip, red, green, blue and colorful lights can be output, which can be used for decoration and graphic display. In addition, in the application, this photodiode with integrated Hall induction can reduce electronic components, save circuit board space, simplify wiring, and reduce costs.

[0014] In addition, the photodiode with integrated Hall sensor according to the above embodiment of the utility model may also have the following additional technical features:

[0015] According to one embodiment of the utility model, the pin has a connecting end and a welding end, the connecting end is located outside the base, and the welding end extends into the first packaging cavity and / or the second packaging cavity; the visible light emitting chip, the magic color control chip and the Hall sensor chip are fixed on the welding end.

[0016] According to an embodiment of the utility model, the number of the pins is six, and the six pins are respectively a negative power pin, a Hall input pin, a magic color input pin, a Hall output pin, a magic color output pin and a positive power pin;

[0017] The negative terminal of the magic color control chip is electrically connected to the welding end of the negative electrode pin of the power supply, the magic color input terminal of the magic color control chip is electrically connected to the magic color input pin, the magic color output terminal of the magic color control chip is electrically connected to the magic color output pin, the positive terminal of the magic color control chip is connected to the positive electrode pin of the power supply, the first control terminal of the magic color control chip is electrically connected to the negative terminal of the red light emitting chip, the second control terminal of the magic color control chip is electrically connected to the negative terminal of the blue light emitting chip, and the third control terminal of the magic color control chip is electrically connected to the negative terminal of the green light emitting chip; the negative terminals of the red light emitting chip, the blue light emitting chip and the green light emitting chip are connected to the negative electrode pin of the power supply;

[0018] The Hall input end of the Hall sensing chip is electrically connected to the Hall input pin, the Hall output end of the Hall sensing chip is electrically connected to the Hall output pin, the negative terminal of the Hall sensing chip is electrically connected to the negative power supply pin, and the positive terminal of the Hall sensing chip is electrically connected to the positive power supply pin.

[0019] According to an embodiment of the utility model, the bottoms of the magic color control chip, the blue light emitting chip and the green light emitting chip are fixed to the welding ends of the pins in the first packaging cavity by insulating glue;

[0020] The bottom of the Hall sensor chip is fixed to the welding end of the pin in the second packaging cavity by means of insulating glue.

[0021] According to an embodiment of the utility model, the positive terminal of the red light emitting chip is located at the bottom surface of the red light emitting chip, and the bottom of the red light emitting chip is fixed to the welding end of the positive pin of the power supply in the first packaging cavity by conductive glue.

[0022] According to an embodiment of the utility model, the welding end of the positive power pin and the welding end of the negative power pin both extend to the first packaging cavity and the second packaging cavity;

[0023] The magic color control chip and the red light emitting chip are located at the welding end of the positive power pin, the blue light emitting chip and the green light emitting chip are located at the welding end of the magic color output pin; the Hall sensor chip is located at the welding end of the positive power pin and / or the negative power pin.

[0024] According to an embodiment of the present invention, the pin is made of copper, and the surface of the pin has a silver-plated layer.

[0025] On the other hand, the photoelectric keyboard according to the embodiment of the utility model includes an LED key module, each of which has a photodiode with integrated Hall sensing as described above.

[0026] According to the photoelectric keyboard provided by the embodiment of the utility model, the above-mentioned photodiode can reduce electronic components, save circuit board space, simplify wiring, reduce costs, etc. In addition, the Hall induction loop has the characteristics of fast response, high sensitivity, and strong anti-interference, which can improve the performance of the keyboard.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the structure of a photodiode with integrated Hall sensor in an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of a photodiode with integrated Hall sensor according to an embodiment of the utility model;

[0031] Figure 3 It is an equivalent circuit diagram of a photodiode with integrated Hall sensor according to an embodiment of the utility model.

[0032] Reference numerals:

[0033] 10. Bracket;

[0034] 101. Base;

[0035] P10, first packaging cavity;

[0036] P11, second packaging cavity;

[0037] 102, pin;

[0038] P1, power negative pin;

[0039] P2, Hall input pin;

[0040] P3, magic color input pin;

[0041] P4, Hall output pin;

[0042] P5, magic color output pin;

[0043] P6, power positive pin;

[0044] 20. Colorful control chip;

[0045] 21. Visible light emitting chip;

[0046] 211. Red light emitting chip;

[0047] 212. Blue light emitting chip;

[0048] 213. Green light emitting chip;

[0049] 22. Hall sensor chip.

[0050] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] The photodiode and photoelectric keyboard with integrated Hall sensor according to the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0057] Reference Figures 1 to 3 As shown, the photodiode with integrated Hall sensor provided according to the embodiment of the utility model includes a bracket 10 , a visible light emitting chip 21 , a magic color control chip 20 and a Hall sensor chip 22 .

[0058] Specifically, the bracket 10 includes a base 101 and a plurality of pins 102 . The base 101 has a first packaging cavity P10 and a second packaging cavity P11 . The plurality of pins 102 are disposed on the base 101 .

[0059] The bracket 10 is the basic structure of the photodiode with integrated Hall sensor, and the base 101 is the basic part of the bracket 10, which has two packaging cavities, namely the first packaging cavity P10 and the second packaging cavity P11. The first packaging cavity P10 is used to load the magic color control chip 20 and the visible light emitting chip 21, and the second packaging cavity P11 is used to load the Hall sensing chip 22. The material of the base 101 is usually a high-strength plastic material. The pin 102 is usually a metal material, which is used to connect the visible light emitting chip 21, the magic color control chip 20 and the Hall sensing core. For example, the pin 102 is made of copper or copper alloy, and the surface is usually treated with tin coating or gold coating to improve the electrical conductivity and oxidation resistance. Exemplarily, the base 101 is injection molded by an injection molding process to obtain the desired shape and size. After the plastic of the pin 102 is solidified in the injection molding process, it can be fixed with the base 101 to form a whole.

[0060] The visible light emitting chip 21 includes a red light emitting chip 211 for emitting red light, a green light emitting chip 213 for emitting green light, and a blue light emitting chip 212 for emitting blue light. The visible light emitting chip 21 is one of the core components of the photodiode with integrated Hall sensing, and includes a red light emitting chip 211 for emitting red light, a green light emitting chip 213 for emitting green light, and a blue light emitting chip 212 for emitting blue light. These light emitting chips are made of semiconductor materials and emit visible light by inputting current. The peak wavelength of the red light emitting chip 211 is usually between 620-630nm, the peak wavelength of the green light emitting chip 213 is usually between 520-530nm, and the peak wavelength of the blue light emitting chip 212 is usually between 460-470nm. The packaging of the visible light emitting chip 21 usually uses transparent or translucent materials so that light can be emitted through the packaging material.

[0061] The magic color control chip 20 and the visible light emitting chip 21 are fixed in the first packaging cavity P10. The first packaging cavity P10 is packaged by a first packaging glue. The first packaging glue covers the magic color control chip 20 and the visible light emitting chip 21, and the first packaging glue is a transparent or translucent colloid.

[0062] The color control chip 20 is another core component of the photodiode with integrated Hall sensor, which is used to control the color and brightness of the light emitted by the visible light emitting chip 21. The color control chip 20 is usually a multi-channel switch control chip, which can control the on and off of each channel according to the input control signal, thereby realizing the working state of the visible light emitting chip 21.

[0063] The Hall sensing chip 22 is fixed in the second packaging cavity P11, and the second packaging cavity P11 is packaged by a second packaging glue, and the second packaging glue covers the Hall sensing chip 22, and the second packaging glue is a filter glue. The Hall sensing chip 22 is the third core component of the photodiode with integrated Hall sensing, which is used to detect changes in the external magnetic field to achieve switch control. The Hall sensing chip 22 is usually a chip made of semiconductor material, which can detect changes in the external magnetic field and convert it into an electrical signal output. The Hall sensing chip 22 usually has high sensitivity and fast response time, and can be used in various electromagnetic induction switches and sensors. The packaging of the Hall sensing chip 22 usually uses a filter material to prevent light interference from affecting the sensing results.

[0064] It should be noted that the first encapsulation glue and the second encapsulation glue are auxiliary materials of the photodiode integrated with the Hall sensor, and they are used to encapsulate and protect the visible light emitting chip 21, the magic color control chip 20 and the Hall sensor chip 22. The first encapsulation glue is a transparent or translucent colloid material, which can encapsulate the magic color control chip 20 and the visible light emitting chip 21 therein, and protect them from the influence of the external environment. The second encapsulation glue is a filter material, which can encapsulate the Hall sensor chip 22 therein, and prevent the influence of light interference on the sensing result.

[0065] The visible light emitting chip, the magic color control chip 20 and some of the pins 102 are connected to form a magic color control loop to control the visible light emitting chip to emit different light, such as different colors, brightness, etc., to achieve different light effects. The Hall sensor chip 22 is connected to some of the pins 102 to form a Hall sensor loop for switch control, which can be applied to the on-off control of keyboard signals, etc., and has the characteristics of fast response, high sensitivity, strong anti-interference, etc.

[0066] According to the photodiode with integrated Hall induction provided by the embodiment of the utility model, the Hall induction circuit and the magic color control circuit are integrated in the same photodiode, so that the photodiode has both the Hall electromagnetic induction function and the magic color control function. In specific applications, the Hall induction circuit has the characteristics of fast response, high sensitivity, and strong anti-interference, and can be used as an electromagnetic induction switch. Through the magic color control chip 20, red, green, blue and colorful lights can be output, which can be used for decoration and graphic display. In addition, in the application, this photodiode with integrated Hall induction can reduce electronic components, save circuit board space, simplify wiring, and reduce costs.

[0067] In one embodiment of the utility model, the pin 102 has a connecting end and a welding end, the connecting end is located outside the base 101, and the welding end extends into the first packaging cavity P10 and / or the second packaging cavity P11; the visible light emitting chip, the magic color control chip 20 and the Hall sensor chip 22 are fixed on the welding end.

[0068] In an embodiment, the welding end of the pin 102 extends into the first packaging cavity P10 and / or the second packaging cavity P11 so as to fix the visible light emitting chip, the magic color control chip 20 and the Hall sensing chip 22 thereon. The structure can, on the one hand, improve the stability and reliability of the product. By welding, the visible light emitting chip, the magic color control chip 20 and the Hall sensing chip 22 are fixed together with the welding end of the pin 102, which can avoid the movement or falling off of the components due to vibration or other external influences, thereby improving the stability and reliability of the product. On the other hand, the structure can be simplified, the integration of the product can be improved, and it can be made more compact and lightweight.

[0069] In an embodiment of the present invention, there are six pins 102, which are respectively a negative power pin P1, a Hall input pin P2, a magic color input pin P3, a Hall output pin P4, a magic color output pin P5 and a positive power pin P6.

[0070] The negative terminal of the fantasy color control chip 20 is electrically connected to the welding end of the negative electrode pin P1 of the power supply, the fantasy color input terminal of the fantasy color control chip 20 is electrically connected to the fantasy color input pin P3, the fantasy color output terminal of the fantasy color control chip 20 is electrically connected to the fantasy color output pin P5, the positive terminal of the fantasy color control chip 20 is connected to the positive electrode pin P6 of the power supply, the first control terminal of the fantasy color control chip 20 is electrically connected to the negative terminal of the red light emitting chip 211, the second control terminal of the fantasy color control chip 20 is electrically connected to the negative terminal of the blue light emitting chip 212, and the third control terminal of the fantasy color control chip 20 is electrically connected to the negative terminal of the green light emitting chip 213; the negative terminals of the red light emitting chip 211, the blue light emitting chip 212 and the green light emitting chip 213 are connected to the negative electrode pin P1 of the power supply.

[0071] The Hall input end of the Hall sensing chip 22 is electrically connected to the Hall input pin P2, the Hall output end of the Hall sensing chip 22 is electrically connected to the Hall output pin P4, the negative terminal of the Hall sensing chip 22 is electrically connected to the negative power supply pin P1, and the positive terminal of the Hall sensing chip 22 is electrically connected to the positive power supply pin P6. Exemplarily, each end of each chip can be connected to the pin 102 through a bonding wire, and the bonding wire can be a bonding silver wire or a bonding gold wire.

[0072] In this embodiment, the functions of each pin 102 are as follows: Negative power supply pin P1: responsible for providing the negative pole of the power supply, electrically connected to the negative ends of the magic color control chip 20 and the Hall sensing chip 22, and connected to the negative ends of the red, blue and green light-emitting chips. Hall input pin P2: responsible for receiving the input signal of the external Hall sensor, electrically connected to the Hall input end of the Hall sensing chip 22. Magic color input pin P3: responsible for receiving the input signal of the external magic color controller, electrically connected to the magic color input end of the magic color control chip 20. Hall output pin P4: responsible for outputting the output signal of the Hall sensing chip 22, electrically connected to the Hall output end of the Hall sensing chip 22. Magic color output pin P5: responsible for outputting the output signal of the magic color control chip 20, electrically connected to the magic color output end of the magic color control chip 20. Positive power supply pin P6: responsible for providing the positive pole of the power supply, electrically connected to the positive ends of the magic color control chip 20 and the Hall sensing chip 22.

[0073] The connection method of the magic color control chip 20 is as follows: the negative terminal of the magic color control chip 20 is electrically connected to the welding end of the negative electrode pin P1 of the power supply. The magic color input terminal of the magic color control chip 20 is electrically connected to the magic color input pin P3. The magic color output terminal of the magic color control chip 20 is electrically connected to the magic color output pin P5. The positive terminal of the magic color control chip 20 is connected to the positive electrode pin P6 of the power supply. The first control terminal of the magic color control chip 20 is electrically connected to the negative terminal of the red light emitting chip 211. The second control terminal of the magic color control chip 20 is electrically connected to the negative terminal of the blue light emitting chip 212. The third control terminal of the magic color control chip 20 is electrically connected to the negative terminal of the green light emitting chip 213.

[0074] The connection mode of the Hall sensor chip 22 is as follows: the Hall input terminal of the Hall sensor chip 22 is electrically connected to the Hall input pin P2. The Hall output terminal of the Hall sensor chip 22 is electrically connected to the Hall output pin P4. The negative terminal of the Hall sensor chip 22 is electrically connected to the negative power supply pin P1. The positive terminal of the Hall sensor chip 22 is electrically connected to the positive power supply pin P6.

[0075] Six pins 102 are used to connect different terminals of the magic color control chip 20 and the Hall sensor chip 22, respectively, to achieve precise control of light effects and switches. Among them, the magic color control chip 20 is responsible for controlling the visible light emitting chip to emit light of different colors, and the Hall sensor chip 22 is responsible for switch control. Through this design, precise adjustment and switch control of light of different colors can be achieved, which improves the control accuracy and flexibility of the entire photodiode. At the same time, the connection method of the pin 102 also makes the structure of the entire device more compact and reliable.

[0076] In one embodiment of the present invention, the bottoms of the magic color control chip 20, the blue light emitting chip 212 and the green light emitting chip 213 are fixed to the welding end of the pin 102 in the first packaging cavity P10 by insulating glue. The bottom of the Hall sensor chip 22 is fixed to the welding end of the pin 102 in the second packaging cavity P11 by insulating glue.

[0077] In the specific manufacturing process, first, apply insulating glue on the welding end of the corresponding pin 102 in the first packaging cavity P10, and then align the colorful control chip 20, the blue light emitting chip 212 and the green light emitting chip 213 with the corresponding welding ends of the pin 102, and press them on the insulating glue at the welding end of the pin 102. Similarly, apply insulating glue on the welding end of the corresponding pin 102 in the second packaging cavity P11, align the Hall sensor chip 22 with the corresponding welding end of the pin 102, and press it at the welding end of the pin 102. Finally, send it to the curing equipment for curing, so that after the insulating glue is cured, the colorful control chip 20, the blue light emitting chip 212 and the green light emitting chip 213 are fixed in the first packaging cavity P10, and the Hall sensor chip 22 is fixed in the second packaging cavity P11.

[0078] The method of fixing the chip by insulating glue can improve the stability and reliability of the product and avoid problems such as short circuit between the chip and the pin 102.

[0079] In one embodiment of the present invention, the positive terminal of the red light emitting chip 211 is located at the bottom surface of the red light emitting chip 211, and the bottom of the red light emitting chip 211 is fixed to the welding end of the power positive pin P6 in the first packaging cavity P10 by conductive glue.

[0080] In this embodiment, the red light emitting chip 211 is directly fixed to the welding end of the positive power pin P6 by conductive glue, which can better ensure the reliability and stability of the electrical connection and avoid circuit failures caused by factors such as poor contact. In addition, it can reduce wiring, simplify the product structure, and reduce manufacturing costs.

[0081] In one embodiment of the present invention, the welding end of the positive power pin P6 and the welding end of the negative power pin P1 both extend to the first packaging cavity P10 and the second packaging cavity P11.

[0082] The magic color control chip 20 and the red light emitting chip 211 are located at the welding end of the positive power pin P6, the blue light emitting chip 212 and the green light emitting chip 213 are located at the welding end of the magic color output pin P5; the Hall sensing chip 22 is located at the welding end of the positive power pin P6 and / or the negative power pin P1.

[0083] In this embodiment, by extending the welding ends of the positive power pin P6 and the negative power pin P1 to the first packaging cavity P10 and the second packaging cavity P11, the magic color control chip 20 and the Hall sensor chip 22 can be directly connected to the positive power pin P6 and the negative power pin P1 in their respective packaging cavities, thereby simplifying the structure and facilitating the independent arrangement of the magic color control chip 20 and the Hall sensor chip 22. In addition, the red light emitting chip 211, the blue light emitting chip 212, and the blue light emitting chip 212 are flexibly arranged in the first packaging cavity P10, and can maintain a reasonable spacing.

[0084] In one embodiment of the utility model, the pin 102 is made of copper, and the surface of the pin 102 has a silver coating. The copper pin 102 has good electrical conductivity, can reduce the resistance value of the circuit, and improve the transmission efficiency of the circuit. At the same time, the copper material has high mechanical strength, can ensure the structural stability of the pin 102, and avoid deformation or breakage of the pin 102 due to external forces. Processing a layer of silver coating on the surface of the pin 102 can further improve the electrical conductivity of the pin 102. At the same time, the silver coating has good anti-oxidation and anti-corrosion properties, can protect the surface of the pin 102, and avoid circuit failures due to oxidation or corrosion. In addition, the surface of the silver coating is smooth and clean, can provide good welding performance, and make the welding of the pin 102 with other components more stable and reliable. At the same time, the surface of the silver coating also has good reflectivity, which can improve the optical performance of the photodiode.

[0085] The embodiment of the utility model further provides a photoelectric keyboard, comprising LED key modules, each of which has a photodiode with integrated Hall sensor as described above.

[0086] According to the photoelectric keyboard provided by the embodiment of the utility model, the above-mentioned photodiode can reduce electronic components, save circuit board space, simplify wiring, reduce costs, etc. In addition, the Hall induction loop has the characteristics of fast response, high sensitivity, and strong anti-interference, which can improve the performance of the keyboard.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A photodiode with integrated Hall sensor, characterized in that: include: A bracket, the bracket comprising a base and a plurality of pins, the base having a first packaging cavity and a second packaging cavity, and the plurality of pins are arranged on the base; Visible light emitting chips, the visible light emitting chips comprising a red light emitting chip for emitting red light, a green light emitting chip for emitting green light, and a blue light emitting chip for emitting blue light; A magic color control chip, wherein the magic color control chip and the visible light emitting chip are fixed in the first packaging cavity, the first packaging cavity is packaged by a first packaging glue, the first packaging glue covers the magic color control chip and the visible light emitting chip, and the first packaging glue is a transparent or translucent colloid; A Hall sensor chip, wherein the Hall sensor chip is fixed in the second packaging cavity, the second packaging cavity is packaged by a second packaging glue, the second packaging glue covers the Hall sensor chip, and the second packaging glue is a light filtering glue; Among them, the visible light emitting chip, the magic color control chip and some of the multiple pins are connected to form a magic color control circuit to control the visible light emitting chip to emit different lights, and the Hall sensing chip is connected to some of the multiple pins to form a Hall sensing circuit to perform switch control.

2. The photodiode with integrated Hall sensor according to claim 1, characterized in that: The pin has a connecting end and a welding end, the connecting end is located outside the base, and the welding end extends into the first packaging cavity and / or the second packaging cavity; the visible light emitting chip, the magic color control chip and the Hall sensor chip are fixed on the welding end.

3. The photodiode with integrated Hall sensor according to claim 2, characterized in that: There are six pins, and the six pins are respectively a negative power pin, a Hall input pin, a magic color input pin, a Hall output pin, a magic color output pin and a positive power pin; The negative terminal of the magic color control chip is electrically connected to the welding end of the negative electrode pin of the power supply, the magic color input terminal of the magic color control chip is electrically connected to the magic color input pin, the magic color output terminal of the magic color control chip is electrically connected to the magic color output pin, the positive terminal of the magic color control chip is connected to the positive electrode pin of the power supply, the first control terminal of the magic color control chip is electrically connected to the negative terminal of the red light emitting chip, the second control terminal of the magic color control chip is electrically connected to the negative terminal of the blue light emitting chip, and the third control terminal of the magic color control chip is electrically connected to the negative terminal of the green light emitting chip; the negative terminals of the red light emitting chip, the blue light emitting chip and the green light emitting chip are connected to the negative electrode pin of the power supply; The Hall input end of the Hall sensing chip is electrically connected to the Hall input pin, the Hall output end of the Hall sensing chip is electrically connected to the Hall output pin, the negative terminal of the Hall sensing chip is electrically connected to the negative power supply pin, and the positive terminal of the Hall sensing chip is electrically connected to the positive power supply pin.

4. The photodiode with integrated Hall sensor according to claim 2, characterized in that: The bottoms of the magic color control chip, the blue light emitting chip and the green light emitting chip are fixed to the welding ends of the pins in the first packaging cavity by means of insulating glue; The bottom of the Hall sensor chip is fixed to the welding end of the pin in the second packaging cavity by means of insulating glue.

5. The photodiode with integrated Hall sensor according to claim 3, characterized in that: The positive terminal of the red light emitting chip is located at the bottom surface of the red light emitting chip, and the bottom of the red light emitting chip is bonded and fixed to the welding end of the positive electrode pin of the power supply in the first packaging cavity by conductive adhesive.

6. The photodiode with integrated Hall sensor according to claim 3, characterized in that: The welding end of the positive power pin and the welding end of the negative power pin both extend to the first packaging cavity and the second packaging cavity; The magic color control chip and the red light emitting chip are located at the welding end of the positive power pin, the blue light emitting chip and the green light emitting chip are located at the welding end of the magic color output pin; the Hall sensor chip is located at the welding end of the positive power pin and / or the negative power pin.

7. The photodiode with integrated Hall sensor according to claim 1, characterized in that: The pin is made of copper, and the surface of the pin has a silver-plated layer.

8. An optical keyboard, characterized in that: It comprises an LED key module, each of which has a photodiode with integrated Hall sensor as claimed in any one of claims 1 to 7.

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