Ambient light sensor and electronic equipment

Abstract

The utility model relates to an ambient light sensor and electronic equipment, and relates to the technical field of optical sensors. The ambient light sensor comprises a plurality of photoelectric detectors, an application-specific integrated circuit and a substrate, the plurality of photoelectric detectors are arranged on the substrate at intervals, and the application-specific integrated circuit is arranged in the substrate; the plurality of photoelectric detectors at least comprise a first photoelectric detector and a second photoelectric detector, the detection material of the first photoelectric detector is different from that of the second photoelectric detector, and the spectral range of the detection material of the first photoelectric detector is different from that of the second photoelectric detector. According to the invention, for a wider spectral range, each photoelectric detector is arranged to detect a part of the spectral range, and spectral energy detection of any wave band in the ultra-wide spectral range is realized.

Description

Technical Field

[0001] This disclosure relates to the field of optical sensor technology, and more particularly to an ambient light sensor and electronic device. Background Technology

[0002] Ambient light sensors (ALS) are primarily used to measure the intensity of light in the surrounding environment, enabling devices to automatically adjust parameters such as screen brightness and backlight based on ambient light levels. These sensors are widely used in various electronic devices, including smartphones, tablets, laptops, and monitors.

[0003] Existing ambient light sensors focus on detecting light in a specific wavelength band, and the range of spectra they can detect is limited.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This disclosure provides an ambient light sensor and an electronic device.

[0006] According to a first aspect of the present disclosure, an ambient light sensor is provided, comprising:

[0007] Multiple photodetectors, application-specific integrated circuits, and substrates;

[0008] The plurality of photodetectors are spaced apart on the substrate, and the dedicated integrated circuit is disposed within the substrate;

[0009] The plurality of photodetectors includes at least a first photodetector and a second photodetector; the detection materials of the first photodetector and the second photodetector are different, and the spectral ranges of the first photodetector and the second photodetector are different.

[0010] In some embodiments of this disclosure, any two of the plurality of photodetectors detect different spectral ranges.

[0011] In some embodiments of this disclosure, the cross-sectional pattern formed by the received light from the plurality of photodetectors is a centrally symmetric pattern.

[0012] In some embodiments of this disclosure, it further includes: at least one filter;

[0013] A filter is disposed on the surface of a photodetector to allow light of a specific wavelength to pass through.

[0014] In some embodiments of this disclosure, the substrate has a top surface along the height direction of the substrate; the plurality of photodetectors are spaced apart on the top surface.

[0015] In some embodiments of this disclosure, a fixing groove is provided on the top surface, and the application-specific integrated circuit is disposed in the fixing groove.

[0016] In some embodiments of this disclosure, the plurality of photodetectors are arranged in a linear configuration;

[0017] Alternatively, the plurality of photodetectors may be arranged in a rectangular array;

[0018] Alternatively, the plurality of photodetectors may be arranged in a circular pattern;

[0019] Alternatively, the plurality of photodetectors may be arranged in a ring.

[0020] In some embodiments of this disclosure, the shape of the cross-section of the light received by each photodetector is at least one of the following: circle, square, rectangle, parallelogram, rhombus, and triangle.

[0021] In some embodiments of this disclosure, the plurality of photodetectors further includes a third photodetector; the detection material of the third photodetector is a third detection material;

[0022] The detection material of the first photodetector is a first detection material; the detection material of the second photodetector is a second detection material;

[0023] The first detection material, the second detection material, and the third detection material are different;

[0024] The spectral ranges detected by the first photodetector and the second photodetector overlap, and the overlapping range is the first overlapping spectral range. The spectral ranges detected by the second photodetector and the third photodetector overlap, and the overlapping range is the second overlapping spectral range.

[0025] In some embodiments of this disclosure, the plurality of photodetectors are electrically connected to the application-specific integrated circuit.

[0026] According to a second aspect of the present disclosure, an electronic device is provided, including an ambient light sensor and a display screen as described in the first aspect, wherein the ambient light sensor is disposed below the display screen.

[0027] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0028] This disclosure discloses an ambient light sensor comprising multiple photodetectors spaced apart on a substrate, with a dedicated integrated circuit disposed within the substrate. The multiple photodetectors include at least a first photodetector and a second photodetector, with different detection materials and spectral ranges for the first and second photodetectors. By utilizing the different spectral responses of the different detection materials, a wider spectral range can be achieved. Furthermore, by configuring each photodetector to detect a portion of the spectral range, spectral energy detection in any band within an ultra-wide spectral range can be realized.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0031] Figure 1 This is a schematic diagram of an ambient light sensor structure according to some embodiments of the present disclosure.

[0032] Figure 2 This is a side view schematic diagram illustrating the structure of an ambient light sensor according to some exemplary embodiments of the present disclosure.

[0033] Figure 3 This is a schematic diagram illustrating the wavelength and response correspondence of a cascaded calibration of a probe material according to some exemplary embodiments of this disclosure.

[0034] Figure 4 This is a schematic diagram of the transmittance curves of a filter corresponding to different wavelengths in a specific example according to some exemplary embodiments of this disclosure.

[0035] Figure 5 This is a block diagram illustrating an electronic device according to some embodiments of the present disclosure. Detailed Implementation

[0036] Some embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0037] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0038] The specific implementation methods of the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the structure of an ambient light sensor according to some embodiments of the present disclosure. Figure 1 ,like Figure 1 As shown, the ambient light sensor includes multiple photodetectors PD 10, an application-specific integrated circuit ASIC 20, and a substrate 30.

[0040] Multiple photodetectors 10 are spaced apart on the substrate 30, and an ASIC 20 is disposed within the substrate 30.

[0041] In some exemplary embodiments of this disclosure, multiple photodetectors 10 are electrically connected to an application-specific integrated circuit 20. Specifically, the electrical connection can be achieved in various ways, including but not limited to soldering, using conductive adhesive, or flexible circuit boards. It is understood that the choice of connection method depends on specific packaging requirements, cost considerations, and electrical performance requirements.

[0042] It should be noted that a photodetector (PD) is a sensor that can convert light signals into electrical signals. It can receive light pulses transmitted through optical fibers and convert them into current or voltage signals that can be processed by electronic devices.

[0043] It should be noted that the ASIC (Application-Specific Integrated Circuit) is responsible for receiving the raw electrical signals from each PD, and performing a series of processes such as amplification, filtering, and analog-to-digital conversion (ADC) to finally output a digital signal representing the light intensity. It also incorporates a calibration algorithm to correct for differences between PDs, ensuring consistent measurement results. Furthermore, it can implement functions such as temperature compensation to reduce the impact of external factors on measurement accuracy. In some exemplary embodiments of this disclosure, the ASIC can also integrate functions such as automatic gain control (AGC), low-power mode switching, and interrupt generation to adapt to different application scenarios.

[0044] It should be noted that the substrate provides a physical mounting platform for multiple PDs and ASICs, ensuring that all components are correctly aligned and maintain a stable connection. It also carries the cabling network between the PDs and ASICs for transmitting electrical signals.

[0045] In some embodiments of this disclosure, ambient light shines on the PD, generating corresponding current or voltage changes. These electrical signals are transmitted to the ASIC through wires on the substrate. The ASIC performs further processing and finally outputs them to external devices through the communication interface of the ambient light sensor.

[0046] In embodiments of this disclosure, the photodetector 10 and the application-specific integrated circuit 20 are designed separately, allowing for optimized performance on each and improving the structural flexibility and component replaceability of the ambient light sensor. It also reduces mutual interference between the two, such as electromagnetic interference and noise interference.

[0047] In some exemplary embodiments of this disclosure, the substrate 30 has a top surface along the height direction of the substrate 30, and a plurality of photodetectors 10 are spaced apart on the top surface.

[0048] In some exemplary embodiments of this disclosure, a fixing groove is provided on the top surface of the substrate 30, and the application-specific integrated circuit (ASIC) 20 is disposed in the fixing groove.

[0049] Multiple photodetectors include at least a first photodetector and a second photodetector. The detection materials of the first photodetector and the second photodetector are different, and the spectral ranges of the first photodetector and the second photodetector are different.

[0050] In some exemplary embodiments of this disclosure, the photodetector may include a photodiode. The detection material of the photodetector, i.e., the material of the photodiode, determines which band of electromagnetic waves the ambient light sensor responds to. Different semiconductor materials have different bandgap energies, which determine the shortest wavelength they can absorb. By using different detection materials in multiple photodetectors, each photodetector can detect light signals in different spectral ranges. Specifically, the detection material can be cadmium telluride, silicon, germanium, indium gallium arsenide, etc., thereby enabling full-band electromagnetic wave detection.

[0051] It is understandable that a semiconductor material has a relatively large spectral response range. For example, silicon can respond to light between 400nm and 1100nm. If it is desired to further subdivide this relatively large spectral range into finer bands, a film can be deposited on the surface of the semiconductor material to control the transmittance of light of different wavelengths, thereby achieving light detection of finer bands.

[0052] This disclosure involves setting an ambient light sensor containing multiple photodetectors 10 spaced apart on a substrate 30, with an ASIC 20 disposed within the substrate 30. The multiple photodetectors include at least a first photodetector and a second photodetector. The first photodetector and the second photodetector use different detection materials and have different spectral ranges. By utilizing the different spectral responses of the different detection materials, a wider spectral range can be achieved. Furthermore, each photodetector detects a portion of the spectral range, enabling spectral energy detection in any band within an ultra-wide spectral range.

[0053] In some exemplary embodiments of this disclosure, any two photodetectors among a plurality of photodetectors detect different spectral ranges. That is, each photodetector has unique response characteristics to light signals within a specific wavelength range.

[0054] In some exemplary embodiments of this disclosure, the cross-sections of the light received by multiple photodetectors form a centrally symmetrical pattern. This allows each photodetector to capture ambient light from different angles, resulting in more accurate and uniform illumination intensity readings and helping to reduce the effects of localized occlusion or reflection. Furthermore, the centrally symmetrical layout helps to counteract interfering light sources from specific directions (such as windows or indoor lighting), as photodetectors at symmetrical positions experience similar levels of interference, which can be eliminated through subsequent algorithms, thereby enhancing the robustness of the ambient light sensor. Simultaneously, the centrally symmetrical design makes better use of space, allowing for a more compact ambient light sensor, making it more suitable for miniaturized electronic devices such as smartphones and tablets.

[0055] In some exemplary embodiments of this disclosure, the ambient light sensor further includes at least one filter disposed on the surface of a photodetector to allow light of a specific wavelength to pass through. Figure 2 The figure shows a side view of a photodetector 10, a filter 40, and a substrate 30 in an ambient light sensor. As can be seen, the upper and lower surfaces of the substrate 30 are parallel to the horizontal plane. The photodetector 10 is disposed on the upper surface of the substrate 30, and the filter 40 covers the upper surface of the photodetector 10 to adjust the spectral range detected by the photodetector 10. It is understood that the ambient light sensor may include multiple filters, each disposed on the surface of a photodetector to allow light of a specific wavelength to pass through.

[0056] In some exemplary embodiments of this disclosure, the filter can be coated to allow light of a specific wavelength to pass through. The coating can include a dielectric film, a metal film, or an absorbing film; dielectric and absorbing films can also be used together, or a layer of metal can be doped into the dielectric film. The thickness of the coating varies depending on the type of coating, but the total thickness is generally around 1-10 μm. Different types of films are different; dielectric films are made by stacking materials with high and low refractive indices, metal films are made by doping a layer of metal into the stack, and absorbing films are mainly organic materials.

[0057] This disclosure enables each photodetector to detect light signals in different fine spectral ranges by setting different detection materials in multiple photodetectors and setting a filter on at least one of the photodetectors.

[0058] In some embodiments of this disclosure, the arrangement of multiple photodetectors on the substrate is not limited; they can be arranged in multiple rows and columns, in a single column or row, in a fan shape, or in a random and irregular manner. Furthermore, the size of each photodetector is not limited; any two photodetectors can be the same or different in size. The spacing between any two photodetectors is also not limited.

[0059] In some exemplary embodiments of this disclosure, multiple photodetectors are arranged in a linear pattern, which is suitable for scenarios requiring detection of a one-dimensional distribution; or, multiple photodetectors are arranged in a rectangular array, which is suitable for digital imaging scenarios; or, multiple photodetectors are arranged in a circular pattern, which is suitable for precise position measurement scenarios; or, multiple photodetectors are arranged in a ring, which is suitable for scenarios such as surround monitoring and 360-degree monitoring without blind spots.

[0060] In some embodiments of this disclosure, the number of photodetectors is related to the number of wavelength bands that the ambient light sensor is expected to detect. For example, if the ambient light sensor is expected to detect wavelength bands of 320nm-400nm, 280nm-320nm, 100-280nm, and 400nm-800nm, then the number of photodetectors is set to 4.

[0061] In some embodiments of this disclosure, the shape of any photodetector is not limited and can be various shapes such as cuboid, cube, cylinder, frustum, etc. In exemplary embodiments of this disclosure, the shape of the cross-section of the light received by each photodetector is at least one of the following: circle, square, rectangle, parallelogram, rhombus, and triangle.

[0062] It should be noted that different photodetectors can have the same or different shapes. For example, PD1 and PD2 are cuboids, PD3 is a cylinder, and PD4 and PD6 are frustums.

[0063] It should be noted that the spectral ranges that different photodetectors can detect may overlap. It is crucial to ensure that all photodetectors have repeatable and accurate responses within their specified spectral ranges, which requires calibration and standardization of multiple photodetectors.

[0064] In some exemplary embodiments of this disclosure, in response to the overlap in the spectral ranges detected by the first photodetector and the second photodetector, the overlapping range being a first overlapping spectral range, the ASIC is configured to: normalize the light energy of the light detected by the first photodetector in the first overlapping spectral range, using the second photodetector as a reference, to obtain a first normalization coefficient. The detection material of the first photodetector is a first detection material, and the ASIC is configured to: calibrate the detection signal of at least one photodetector corresponding to the first detection material using the first normalization coefficient.

[0065] For example, the spectral ranges detected by the first photodetector and the second photodetector overlap, specifically the first overlapping spectral range of 300nm-400nm. If the first and second photodetectors are used to detect light in this range, the response of the first photodetector is 'a', and the response of the second photodetector is 'b'. The resulting first normalization coefficient is then 'b / a'. Other photodetectors using the first detection material also require calibration using this first normalization coefficient. In other words, when the ASIC processes the electrical signals from other photodetectors using the first detection material, it needs to multiply their output values ​​by 'b / a' for calibration, ensuring consistent output across the detection wavelength range.

[0066] It is understood that the response of the first photodetector and other photodetectors using the same detection material as the first photodetector can be calibrated using the second photodetector, and the response of the second photodetector and other photodetectors using the same detection material as the second photodetector can also be calibrated using the first photodetector. Accordingly, in some exemplary embodiments of this disclosure, in response to the overlap of the spectral ranges detected by the first photodetector and the second photodetector, the overlapping range being a first overlapping spectral range, the ASIC is configured to: normalize the light energy of the light detected by the second photodetector in the first overlapping spectral range, using the first photodetector as a reference, to obtain a second normalization coefficient. The detection material of the second photodetector is a second detection material; the ASIC is configured to: calibrate the detection signal of at least one photodetector corresponding to the second detection material using the second normalization coefficient.

[0067] It should be noted that if multiple photodetectors have more than two types of detection materials, and there is overlap in the detection spectral range between any two types of detection materials, the photodetector corresponding to the detection material whose detection spectral range overlaps with both types of detection materials can be selected as the reference to achieve cascade calibration.

[0068] To better illustrate cascade calibration, let's take the example of multiple photodetectors using three different detector materials.

[0069] In some exemplary embodiments of this disclosure, the plurality of photodetectors further includes a third photodetector, the detection material of which is a third detection material. The detection material of the first photodetector is a first detection material, and the detection material of the second photodetector is a second detection material. The first, second, and third detection materials are different. The spectral ranges detected by the first and second photodetectors overlap, the overlapping range being a first overlapping spectral range, and the spectral ranges detected by the second and third photodetectors overlap, the overlapping range being a second overlapping spectral range.

[0070] The ASIC is configured to: normalize the light energy of the light detected by the third photodetector in the second overlapping spectral range, using the second photodetector as a reference, to obtain a third normalization coefficient. The ASIC is also configured to: calibrate the detection signal of at least one photodetector corresponding to the third detection material using the third normalization coefficient.

[0071] For example, such as Figure 3The diagram illustrates the wavelength and response correspondence during cascade calibration of the first, second, and third detector materials. The detection spectral ranges of the first and second detector materials overlap. The response of the first photodetector corresponding to the first detector material is 'a', the response of the second photodetector corresponding to the second detector material is 'b', and the response of the third photodetector corresponding to the third detector material is 'c'. Using the response of the second photodetector corresponding to the second detector material as a reference, the first normalization coefficient is b / a, and the third normalization coefficient is b / c, thus ensuring consistent output across the entire detection band.

[0072] To better illustrate the ambient light sensor provided in the embodiments of this disclosure, a specific example is now provided for further explanation.

[0073] The ambient light sensor in this specific example contains six separate photodetectors arranged in a rectangular array, namely PD1, PD2, PD3, PD4, PD5, and PD6. PD1 and PD2 use silicon (Si) as the detection material, PD3 and PD4 use germanium (Ge) as the detection material, PD5 and PD6 use silicon (Si) as the detection material, and PD3 and PD4 use indium gallium arsenide (InGaAs) as the detection material.

[0074] PD1, PD2, PD3, PD4, PD5, and PD6 are electrically connected to the ASIC. PD1, PD2, PD3, PD4, PD5, and PD6 are spaced apart on the top surface of the substrate, and the ASIC is installed in a fixing groove on the top surface.

[0075] The spectral range detectable by the photodiode (PD) corresponding to Si is 400nm-1100nm, that of the PD corresponding to Ge is 700-1800nm, and that of the PD corresponding to InGaAs is 800-1700nm. Using the response of Ge as a baseline, through cascade calibration, the normalized coefficient A1 for the PD corresponding to Si and the normalized coefficient A2 for the PD corresponding to InGaAs are obtained. The normalized coefficients A1 and A2 are stored in the ASIC for cascade calibration.

[0076] By setting filters on the surfaces of PD1 and / or PD2, the transmittance at 320nm-400nm, 280nm-320nm, and 200nm-280nm can be controlled, thereby enabling PD1 to detect UVA, UVB, and UVC bands. Figure 4 The figure shows the transmittance curves for different wavelengths corresponding to the set filter.

[0077] By setting a filter on the surface of the PD6 and depositing a high-transmittance film layer of 1600nm-1800nm, the ambient light sensor can observe this part of the spectrum and determine its intensity.

[0078] Furthermore, near-infrared light (0.75um-1um) can be detected using the PD of Si detection material, and short-wave infrared light (1um-2.5um) can be detected using the PD of InGaAs detection material by changing the process and material ratio.

[0079] This demonstrates that by combining separate photodiodes (PDs) with different detection materials and filters for different wavelength bands, ambient light sensors can detect ambient light information across an ultra-wide spectral bandwidth and can also detect light energy in any wavelength band. Furthermore, it can cover a spectral detection range beyond the visible light band, enabling spectral detection in both the invisible and visible light bands.

[0080] Based on the same inventive concept, this disclosure also provides an electronic device, as described in the following embodiments. Since the principle by which this electronic device solves the problem is similar to that of the ambient light sensor embodiment described above, reference can be made to the implementation of the ambient light sensor embodiment described above, and repeated details will not be repeated.

[0081] In some embodiments of this disclosure, the electronic device includes any of the ambient light sensors and displays provided in the above embodiments, with the ambient light sensor disposed below the display. By using an ambient light sensor to detect ambient light information such as the intensity of visible and invisible light in the environment, various electronic devices such as mobile phones, tablets, monitors, and televisions can adjust the brightness and color temperature of the display screen, significantly improving the user experience and reducing power consumption.

[0082] By using ambient light sensors to detect electromagnetic radiation across the entire wavelength range, electronic devices can detect and utilize invisible light such as infrared, ultraviolet, and X-rays. This enables applications such as sun protection, skincare, cosmetic uniformity detection, moisture detection, and wear detection, greatly enhancing the user experience.

[0083] Figure 5 This is a block diagram illustrating an electronic device 500 according to an exemplary embodiment. For example, device 500 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0084] Reference Figure 5 The device 500 may include one or more of the following components: a processing component 502, a memory 504, a power supply component 506, a multimedia component 508, an audio component 510, an input / output (I / O) interface 512, a sensor component 514, and a communication component 516.

[0085] Processing component 502 typically controls the overall operation of device 500, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 502 may include one or more modules to facilitate interaction between processing component 502 and other components. For example, processing component 502 may include a multimedia module to facilitate interaction between multimedia component 508 and processing component 502.

[0086] Memory 504 is configured to store various types of data to support the operation of device 500. Examples of this data include instructions for any application or method operating on device 500, contact data, phonebook data, messages, pictures, videos, etc. Memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0087] Power supply component 506 provides power to various components of device 500. Power supply component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 500.

[0088] Multimedia component 508 includes a screen that provides an output interface between the device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 508 includes a front-facing camera and / or a rear-facing camera. When the device 500 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0089] Audio component 510 is configured to output and / or input audio signals. For example, audio component 510 includes a microphone (MIC) configured to receive external audio signals when device 500 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 504 or transmitted via communication component 516. In some embodiments, audio component 510 also includes a speaker for outputting audio signals.

[0090] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0091] Sensor assembly 514 includes one or more sensors for providing status assessments of various aspects of device 500. For example, sensor assembly 514 may detect the on / off state of device 500, the relative positioning of components such as the display and keypad of device 500, changes in the position of device 500 or a component of device 500, the presence or absence of user contact with device 500, the orientation or acceleration / deceleration of device 500, and temperature changes of device 500. Sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 514 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0092] Communication component 516 is configured to facilitate wired or wireless communication between device 500 and other devices. Device 500 can access wireless networks based on communication standards, such as WiFi, 3G, 4G, 5G, other communication standards, or combinations thereof. In some embodiments of this disclosure, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In some embodiments of this disclosure, communication component 516 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0093] In some embodiments of this disclosure, device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0094] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0095] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0096] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0097] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0099] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0100] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0101] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0102] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An ambient light sensor, characterized by Comprising: a plurality of photodetectors, an application specific integrated circuit and a substrate; the plurality of photodetectors are arranged on the substrate at intervals, and the application specific integrated circuit is arranged in the substrate; the plurality of photodetectors at least include a first photodetector and a second photodetector; the detection material of the first photodetector is different from the detection material of the second photodetector, and the spectral range of the first photodetector is different from the spectral range of the second photodetector.

2. Ambient light sensor according to claim 1, characterized in that Any two photodetectors in the plurality of photodetectors detect different spectral ranges.

3. The ambient light sensor of claim 1, wherein, The cross section of the plurality of photodetectors receiving light forms a central symmetric pattern.

4. The ambient light sensor of claim 1, wherein, Further comprising: at least one optical filter; the optical filter is arranged on the surface of the photodetector to allow light of a specific wavelength to pass through.

5. The ambient light sensor of claim 1, wherein, The substrate has a top surface along the height direction of the substrate; the plurality of photodetectors are arranged on the top surface at intervals.

6. Ambient light sensor according to claim 5, characterized in that, The top surface is provided with a fixing groove, and the application specific integrated circuit is arranged in the fixing groove.

7. The ambient light sensor of claim 1, wherein, The plurality of photodetectors are arranged in a linear array; or, the plurality of photodetectors are arranged in a rectangular array; or, the plurality of photodetectors are arranged in a circular array; or, the plurality of photodetectors are arranged in a circular array.

8. The ambient light sensor of claim 1, wherein, The shape of the cross section of each photodetector receiving light is at least one of a circle, a parallelogram, and a triangle.

9. The ambient light sensor of claim 1, wherein, The plurality of photodetectors further include a third photodetector; the detection material of the third photodetector is a third detection material; the detection material of the first photodetector is a first detection material; the detection material of the second photodetector is a second detection material; the first detection material, the second detection material, and the third detection material are different; the spectral range detected by the first photodetector and the second photodetector overlaps, and the overlapping range is a first overlapping spectral range; the spectral range detected by the second photodetector and the third photodetector overlaps, and the overlapping range is a second overlapping spectral range.

10. The ambient light sensor of claim 1, wherein, The plurality of photodetectors are electrically connected to the application specific integrated circuit.

11. An electronic device, comprising: Comprising: a display screen; and the ambient light sensor according to any one of claims 1 to 10 is arranged below the display screen.

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