Low-power-consumption electronic equipment

Abstract

The invention provides an electronic device with low power consumption. The electronic equipment comprises a main control chip, an LED backlight source and a display device, the main control chip and the LED backlight source are arranged in the electronic equipment, the display device is arranged on the first surface of the electronic equipment, the side, facing the interior of the electronic equipment, of the display device is provided with a backlight layer, and the LED backlight source is suitable for providing illumination for the backlight layer; the electronic equipment is provided with a light-transmitting area arranged on the edge of one side of the display device, and the light-transmitting area comprises a lens structure which is suitable for introducing an external light source and focusing the external light source to the backlight layer. And the main control chip controls the luminous intensity of the LED backlight source according to the real-time brightness of the display device. The external natural light and the LED backlight source are introduced for mixed illumination, and the brightness sensor and the dimming mechanism are matched, so that dynamic intelligent adjustment of the backlight brightness is realized, the LED backlight power consumption is remarkably reduced and the battery endurance time is prolonged on the premise of ensuring the stability of the display brightness, and the method is suitable for electronic equipment sensitive to power consumption, such as an intelligent watch and a mobile phone.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a low-power electronic device. Background Art

[0002] Existing electronic devices, such as smartwatches and mobile phones, typically utilize a closed-loop structure. Their displays primarily rely on LED backlights for brightness, often with fixed brightness or simple dimming. Because these devices cannot fully utilize natural light, the LED backlights operate at high power for extended periods, resulting in high power consumption and rapid battery drain, impacting device battery life and lifespan. Therefore, a low-power solution that can dynamically adjust the backlight based on ambient light is urgently needed. Summary of the Invention

[0003] In view of this, the present application discloses a low-power electronic device to control backlight power consumption, thereby saving power consumption of the electronic device.

[0004] The electronic device includes: a main control chip and an LED backlight source arranged inside the electronic device, a display device arranged on the first surface of the electronic device, the side of the display device facing the inside of the electronic device having a backlight layer, and the LED backlight source is suitable for providing light to the backlight layer; the electronic device has a light-transmitting area arranged on one side edge of the display device, the light-transmitting area includes a lens structure, which is suitable for introducing an external light source and focusing the external light source onto the backlight layer; the main control chip controls the luminous intensity of the LED backlight source according to the real-time brightness of the display device.

[0005] Optionally, the light transmittance of the light-transmitting area is greater than 99%.

[0006] Optionally, the lens structure includes a Fresnel lens or a convex lens.

[0007] Optionally, the electronic device further includes a light guide device connected to the lens structure, the light guide device having at least one prism structure therein, adapted to guide the focused external light source into the backlight layer, the at least one prism structure including a first prism structure.

[0008] Optionally, the lens structure is elliptical, and the light-guiding device has a first opening and a second opening, and the first opening matches the lens structure; after the external light source is focused by the lens structure, it is incident on the first prism structure, and the first prism structure refracts the focused external light source so that the external light source is incident on the backlight layer through the second opening in the form of parallel light; wherein the second opening faces the backlight layer.

[0009] Optionally, the light guide device is an opaque light guide body, and the light guide device is an elliptical cylinder, and the size of the second opening is smaller than the size of the first opening.

[0010] Optionally, the electronic device further includes a brightness sensor disposed on the backlight layer, adapted to transmit brightness data to the main control chip, where the brightness data is used to characterize the real-time brightness of the display device.

[0011] Optionally, when the real-time brightness of the display device is less than a first preset brightness value, the main control chip enhances the luminous intensity of the LED backlight source so that the real-time brightness of the display device reaches the first preset brightness value; when the real-time brightness of the display device is greater than a second preset brightness value, the main control chip reduces the impact of the external light source on the backlight layer so that the real-time brightness of the display device returns to below the second preset brightness value; wherein the second preset brightness value is greater than the first preset brightness value.

[0012] Optionally, the electronic device also includes an opening baffle arranged between the light guide device and the backlight layer, suitable for controlling the brightness of the light guide device entering the backlight layer; when the real-time brightness of the display device is greater than the second preset brightness value, the main control chip controls the opening baffle through the driving device to reduce the opening size of the opening baffle.

[0013] Optionally, the light-transmitting area also includes an optical element with an electrically controlled dimming material, which is suitable for controlling the brightness of an external light source entering the lens structure; when the real-time brightness of the display device is greater than a second preset brightness value, the main control chip controls the light guiding degree of the optical element by changing the voltage value applied to the electrically controlled dimming material to reduce the luminous flux.

[0014] In summary, the low-power electronic device disclosed in this application has at least the following beneficial effects:

[0015] (1) This invention provides a light-transmitting area with high light transmittance (light transmittance greater than 99%) at the edge of the display device and introduces a lens structure with focusing function (such as a Fresnel lens or a convex lens) to guide and focus external natural light or ambient light onto the backlight layer of the display device. Thus, when the ambient light is sufficient, the lighting function of the LED backlight source can be partially or even completely replaced. This method significantly reduces the use frequency and luminous intensity of the LED backlight source, achieving the technical effect of reducing the power consumption of the entire device and extending the battery life.

[0016] (2) By introducing an optical element such as an opening baffle or an electrically controlled dimming material into the light guide path, and in conjunction with the real-time brightness data collected by the brightness sensor on the backlight layer, the main control chip can accurately adjust the luminous flux of ambient light introduced into the backlight layer. For example, when the ambient light is too strong, the system can reduce the opening of the baffle or reduce the transmittance of the dimming material to avoid overexposure of the display or energy waste, thereby improving visual comfort; when the ambient light is weak, the light input channel can be appropriately enlarged or LED fill light can be turned on to achieve brightness compensation, thereby improving the system's adaptability to complex light environments.

[0017] (3) A lens with an elliptical focusing structure and an elliptical cylindrical light-guiding device are used, combined with an internal prism structure to refract the focused natural light into parallel light and then guide it to the backlight layer. This combined structure can effectively compress the volume required for the light-guiding path, improve the light-guiding efficiency, and meet the development needs of terminal equipment for thinness and miniaturization. It is suitable for products that are sensitive to structural size, such as smart watches and smart phones.

[0018] (4) The main control chip automatically determines whether to enhance the LED backlight, open or close the shading channel based on the real-time brightness data collected by the brightness sensor and compares it with the first and second preset brightness values, and implements adjustments through the driving device or the electronically controlled dimming material, thereby realizing a system-level backlight adjustment closed-loop control mechanism. Without user intervention, intelligent fill light or light limitation can be completed according to the actual lighting environment, thereby improving ease of use and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief introduction to the drawings used in describing the embodiments of this application.

[0020] Figure 1 A schematic diagram of the external structure of an electronic device provided in an embodiment of the present application is shown.

[0021] Figure 2 A schematic diagram of the internal structure of an electronic device provided in an embodiment of the present application is shown.

[0022] Figure 3 A module relationship diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. The drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative work. Adjustments and improvements made without departing from the concept of the present application are all within the scope of protection of the present application.

[0024] To simplify the drawings, only the parts related to the corresponding embodiments are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only a portion of the components with the same structure or function are schematically depicted. In reality, more or fewer components with the same structure or function may exist.

[0025] In this application, unless otherwise expressly specified and limited, ordinal numbers such as "first", "second", etc. are only used to distinguish and describe associated objects, and cannot be understood as indicating or implying the relative importance or order between associated objects; in addition, they do not represent the number of associated objects. "Multiple" includes two or more, and other quantifiers are similar. " / " is used to describe the relationship between associated objects, which indicates the "or" relationship between associated objects. "And / or" is used to describe the relationship between associated objects, which includes any combination relationship between associated objects, for example, "a and / or b" includes: "alone a", "alone b", or "a and b". "One or more" or "at least one" in multiple objects refers to any object or any combination of multiple objects, for example, "one or more of a1, a2, a3" or "at least one of a1, a2, a3" includes: "alone a1", "alone a2", "alone a3", "a1 and a2", "a1 and a3", "a2 and a3", or "a1, a2 and a3".

[0026] Existing electronic devices, especially small portable devices like smartwatches and smartphones, commonly use liquid crystal displays (LCDs) to present information. LCDs themselves do not emit light and typically rely on LED backlights installed behind them to provide illumination for normal display. Traditionally, electronic devices have been enclosed, preventing the effective introduction and utilization of natural light. Consequently, backlighting is essentially entirely provided by LEDs.

[0027] Most devices use only fixed brightness or simple backlight brightness adjustment based on ambient light sensing. For example, some devices have built-in light sensors that detect external light intensity and adjust LED brightness, or allow users to manually adjust the brightness level. While these methods alleviate backlight energy consumption issues to some extent, they still rely on LEDs as the primary light source, making minimal use of external light.

[0028] To reduce power consumption, some existing solutions use energy-saving LEDs, PWM dimming technology, and power management chip optimization to reduce the energy consumption of LED backlights. Some technical solutions use screen structures with higher light transmittance or reflective LCD screens to reduce dependence on backlights. However, these methods still have many limitations: for example, energy-saving LEDs or PWM dimming still require high brightness output in strong light environments, and the energy-saving effect is limited; although reflective or semi-transparent LCDs can reduce energy consumption, they affect image brightness and color performance, resulting in poor display effects; some manual or simple brightness adjustment methods based on ambient light lack control accuracy and slow response, making it difficult to meet display requirements in complex scenarios; and some structural energy-saving designs such as light guide films and reflective panels rely on specific optical architectures, with poor versatility and adaptability, making them difficult to promote and apply in multiple types of devices.

[0029] Therefore, under the current mainstream architecture with closed structure and LED-dependent backlight, electronic devices generally face a battery life bottleneck, especially in high-brightness outdoor environments. The devices need to increase the backlight intensity to maintain readability, further increasing energy consumption.

[0030] In response to the shortcomings of the above-mentioned existing technologies, the idea of ​​this application is to design a low-power solution that can actively introduce external light sources (such as natural light) and coordinate with LED backlight sources to achieve light source reuse, intelligent fill lighting, dynamic energy saving and other purposes, thereby fundamentally improving the device's battery life performance and user experience.

[0031] The following description is given with reference to the accompanying drawings.

[0032] Please refer to Figure 1 and Figure 2 , which respectively show the external structure diagram and internal structure diagram of the electronic device provided by the embodiment of the present application. Figure 1 and Figure 2 As shown, the electronic device 100 includes: a main control chip (not shown in the figure) and an LED backlight source 160 arranged inside the electronic device 100, a display device 111 arranged on the first surface 110 of the electronic device 100, and the side of the display device 111 facing the inside of the electronic device has a backlight layer 170, and the LED backlight source 160 is suitable for providing light to the backlight layer 170; the electronic device 100 has a light-transmitting area 120 arranged at the edge of one side of the display device 111, and the light-transmitting area 120 includes a lens structure 130, which is suitable for introducing an external light source and focusing the external light source to the backlight layer 170; the main control chip controls the luminous intensity of the LED backlight source 160 according to the real-time brightness of the display device 111.

[0033] exist Figure 1 In this context, the "first surface" refers to the user-facing surface of an electronic device (also referred to as the front of the electronic device). The display device, for example, can be a display screen. The light-transmitting area is located on the side of the bottom edge of the front of the electronic device. This effectively guides ambient light into the device without occupying a large area, thus maintaining the normal viewing area of ​​the display device. This arrangement also helps maintain the overall appearance of the device, maintaining its integrity and aesthetics. It is suitable for thin and lightweight devices such as smartwatches and mobile phones, which require high space utilization.

[0034] exist Figure 2 In the example, an LED backlight consists of several LEDs, which are controlled by the backlight chip inside the electronic device. In other words, the main control chip can control the LEDs through the backlight chip. For example, the main control chip can send instructions to the backlight chip, instructing it to increase or decrease the luminous intensity of the LEDs. The direction of the arrow represents the light propagation path.

[0035] It should be noted that the above-mentioned electronic devices can be portable mobile terminals such as mobile phones, smart watches, and tablet computers. Figure 1 The structural components of the electronic device are shown schematically and do not limit the specific product shape or appearance. In actual application, the shape or appearance can be adjusted according to the size and functional requirements of different devices. For example, if the electronic device is a smartwatch, two straps can be extended from its sides, and the outer shape can be designed to be circular, oval, or other shapes.

[0036] The main control chip is used to perform comprehensive management and logical decision-making for functional modules such as brightness perception, backlight adjustment, baffle control, and voltage control. It can adopt various forms of processor units. For example, the main control chip can be a central processing unit (CPU), microcontroller unit (MCU), system-on-chip (SoC), digital signal processor (DSP), or artificial intelligence processor (NPU) with integrated high-performance processing capabilities. These chips generally have certain data processing capabilities, interface control capabilities, and low power consumption characteristics, which can meet the comprehensive requirements of mobile electronic devices such as smart watches and smartphones for response speed, energy consumption control, and module coordination.

[0037] The structural design adopted in this embodiment breaks the traditional closed-door electronic device's reliance on LED backlight for illumination. By introducing a light-transmitting area with high light transmittance at the edge of the display device and combining it with a lens structure with light-gathering capabilities, it is possible to fully guide and utilize external light sources (i.e., external ambient light) to achieve a collaborative lighting mechanism with the LED backlight. At the same time, combined with the master chip's precise control of the LED backlight, the entire system reduces LED usage when there is sufficient light and provides appropriate light supplementation when there is insufficient light, thereby achieving the goal of dynamic energy saving.

[0038] Therefore, this application not only improves the adjustment accuracy and flexibility of the display brightness of electronic devices, but also effectively reduces the workload of LED backlight sources, helps to extend the battery life of the device, and is particularly suitable for wearable or mobile electronic products that are sensitive to energy consumption and have diverse usage scenarios.

[0039] In some embodiments of the present application, the light transmittance of the light-transmitting area is greater than 99%; and the lens structure includes a Fresnel lens or a convex lens.

[0040] The light transmittance of the light-transmitting area is greater than 99%, meaning that this area causes almost no noticeable attenuation of external light, maximizing the amount of ambient light introduced. The lens structure can be constructed using either a Fresnel lens or a convex lens, both of which have a focusing function. The compact and thin Fresnel lens is suitable for integration into electronic devices with limited space. The combination of high-transmittance materials and focusing lenses significantly improves the efficiency of natural light guidance without increasing the size of the device. This allows more ambient light to be effectively concentrated and directed into the backlight layer, reducing reliance on LED backlight sources and achieving greater energy savings.

[0041] In some embodiments of this application, please continue to refer to Figure 2 , the electronic device 100 also includes a light guide device 140 connected to the lens structure 130. The light guide device 140 is used to further process the external light focused by the lens structure 130 and guide it to the backlight layer 170 to achieve more efficient use of natural light. At least one prism structure is provided inside the light guide device 140 for refracting and adjusting the incoming light, which includes at least one first prism structure 150. The first prism structure 150 can refract the focused light from the lens structure and convert it into a more uniform parallel light form, so as to better adapt to the light input requirements of the backlight layer 170 and improve the light guide efficiency and uniformity. Figure 2 In the figure, the first opening can be understood as an elliptical part, which coincides with the lens structure 130 ; the second opening can be understood as the right opening of the light guide device 140 , which releases the parallel light refracted by the first prism structure 150 out of the light guide device 140 .

[0042] Structurally, the lens structure 130 is elliptical, and the light guide 140 has a first opening and a second opening. The size of the first opening matches the shape of the lens structure 130, allowing the two to be detachably connected, facilitating assembly and maintenance. After being focused by the lens structure 130, the light enters the light guide 140 from the first opening, is then refracted into parallel light by the first prism structure 150, and is ultimately introduced into the backlight layer 170 through the second opening. This second opening, facing the backlight layer 170 and smaller than the first opening, can further compress the light's exit area, making the light entering the backlight layer more concentrated and increasing the incident light flux density, thereby enhancing the lighting effect and reducing light energy loss.

[0043] The light guide device 140 is an opaque light guide as a whole. This design can effectively prevent the lateral scattering or escape of light in the light guide path, ensuring that more light energy is smoothly transmitted to the backlight layer, thereby improving the overall lighting effect. At the same time, the light guide device 140 has an elliptical cylinder shape, which is easier to achieve linear guidance of light and stable control of the internal reflection path in a limited space than a cylinder or a square cylinder. It is particularly suitable for occasions where high space utilization efficiency is required in devices such as watches or mobile phones. Of course, depending on the actual product appearance design, the light guide device can also be other geometric shapes such as a cylinder or a square cylinder, but considering the comprehensive consideration of optical efficiency and structural compactness, an elliptical cylinder is usually the more preferred option.

[0044] It can be seen that the structural design of this application not only achieves efficient convergence and directional guidance of natural light, but also reduces energy consumption and improves light input efficiency through reasonable optical design, further enhancing the energy-saving performance of electronic equipment.

[0045] In some embodiments of the present application, the electronic device further includes a brightness sensor disposed in the backlight layer, adapted to transmit brightness data to a main control chip, where the brightness data is used to represent the real-time brightness of the display device. When the real-time brightness of the display device is less than a first preset brightness value, the main control chip increases the luminous intensity of the LED backlight source so that the real-time brightness of the display device reaches the first preset brightness value; when the real-time brightness of the display device is greater than a second preset brightness value, the main control chip reduces the influence of the external light source on the backlight layer so that the real-time brightness of the display device returns to below the second preset brightness value; wherein the second preset brightness value is greater than the first preset brightness value.

[0046] Please refer to Figure 3 , which shows a module relationship diagram of the electronic device provided by the embodiment of the present application. Figure 3 As shown, the main control chip is interconnected with the brightness sensor and the backlight chip respectively, thereby forming a brightness adjustment control system.

[0047] The brightness sensor is arranged on the backlight layer, which can detect the brightness of the current display device in real time and transmit the numerical data representing the brightness to the main control chip. It should be noted that the brightness of the display device does not have to be constant at a fixed value, but is allowed to fluctuate within a certain brightness range. To this end, the present application sets two control thresholds, namely the first preset brightness value and the second preset brightness value, which serve as the lower limit and upper limit of the interval respectively. The main control chip determines whether the current brightness is within the range of the interval based on the brightness information fed back by the brightness sensor, and performs corresponding adjustment operations accordingly to achieve dynamic management of the backlight brightness, so that the real-time brightness is always maintained within the set range, ensuring a balance between user viewing experience and energy efficiency.

[0048] Specifically, when the display device's real-time brightness is less than a first preset brightness value, it indicates that the brightness currently being introduced into the backlight layer by external ambient light is insufficient. At this point, the main control chip controls the LED backlight source through the backlight chip to increase its illumination to compensate for the insufficient brightness, bringing the overall brightness of the display device back to above the first preset brightness value. This operation reflects the strategy of maintaining display quality through self-luminescence in the absence of sufficient external light.

[0049] Conversely, when the real-time brightness of the display device exceeds the second preset brightness value, it means that the currently introduced external light is too strong, which may cause problems such as screen overbrightness, glare, and user discomfort. To this end, the main control chip will activate the adjustment strategy to reduce the external light source's exposure to the backlight layer by controlling the relevant structures or parameters in the electronic device (such as adjusting the size of the baffle opening, the transmittance of the electrically controlled dimming material, etc.), thereby reducing the actual brightness and bringing it back into the acceptable brightness range.

[0050] This control mechanism demonstrates excellent dynamic response and energy efficiency. It intelligently fills in the gaps in external light intensity to ensure display clarity. It also suppresses excessive brightness in strong sunlight, enhancing user comfort and avoiding unnecessary energy consumption. This "using natural light instead of LEDs" strategy achieves intelligent backlight control and low power consumption, making it particularly suitable for mobile devices with critical battery life requirements, such as smartwatches and mobile phones.

[0051] In some embodiments of this application, please continue to refer to Figure 3 The electronic device further includes an opening baffle 180 ( Figure 2 The position of this structure is shown in the figure), which is used to adjust the luminous flux of external ambient light entering the backlight layer. The opening baffle 180 has an adjustable opening structure. The main control chip can dynamically control the size of the opening according to the brightness of the display device, thereby effectively adjusting the intensity of ambient light.

[0052] like Figure 3 As shown, the main control chip is interconnected not only with the brightness sensor and backlight chip, but also with the motor chip, which in turn connects to aperture baffle 180, thus forming a complete mechanical adjustment mechanism. Specifically, when the brightness sensor detects that the display device's real-time brightness exceeds a second preset brightness value, the main control chip drives aperture baffle 180 through the motor chip, reducing its opening size. This limits the amount of natural light introduced by the light guide into the backlight layer, preventing excessive brightness from disrupting the user's visual experience.

[0053] This embodiment provides a specific way to reduce the luminous flux - precisely controlling the amount of natural light introduced through a mechanical structure (i.e., an opening baffle). External light must pass through the opening in the middle of the baffle before it can illuminate the backlight layer, so adjusting the size of the opening can effectively control the intensity of natural light received by the backlight layer. In addition, the introduction of this structure is not only suitable for the brightness suppression needs in high-brightness environments, but also reflects the energy-saving logic of giving priority to the use of natural light when the external ambient light is weak: when the brightness is insufficient, the main control chip will first adjust the opening of the opening baffle to the maximum to introduce as much ambient light as possible. Only when the natural light still cannot meet the brightness requirements will the LED backlight source be started for fill light.

[0054] By setting up adjustable opening baffles, the system achieves active control over the utilization of natural light, making the entire brightness adjustment strategy more flexible and precise, which not only saves energy but also improves the adaptability and display stability of the equipment in different lighting environments.

[0055] In some embodiments of the present application, the light-transmitting area also includes an optical element with an electrically controlled dimming material, which is used to achieve intelligent adjustment of the brightness of the external ambient light entering the electronic device without the involvement of a mechanical structure. The dimming characteristics of the optical element can be dynamically controlled by an external voltage to adjust its transmittance. Specifically, when the real-time brightness of the display device is greater than the second preset brightness value, the main control chip will determine that the current brightness is too high. In order to avoid the problem of the screen being too bright or glare caused by excessive ambient light, the main control chip will adjust the voltage applied to the electrically controlled dimming material to reduce its transmittance, thereby reducing the luminous flux entering the lens structure, and ultimately reducing the intensity of light entering the backlight layer.

[0056] This method provides a non-mechanical luminous flux control method that complements baffle adjustment for this application. Compared to mechanical baffle adjustment structures, electrically controlled dimming materials have the advantages of being contactless, noiseless, fast in response, and highly precise in control. They are particularly suitable for compact or space-constrained smart electronic devices (such as smart watches and wearable devices). At the same time, this optical control method is more conducive to achieving continuously variable brightness adjustment, thereby improving the smoothness of brightness transitions and the user viewing experience.

[0057] In some implementations, electronic devices can also employ both mechanical baffles and electrically controlled dimming materials to collaboratively control ambient light flux. For example, during the initial adjustment phase, the transmittance of the electrically controlled material can be prioritized for rapid, initial brightness reduction. Further refinement of control can be achieved through baffle adjustment, balancing response speed and adjustment range, thereby achieving a more precise and efficient brightness control strategy.

[0058] It should be noted that although this embodiment provides a specific solution for adjusting the external light flux through a baffle and an electrically controlled dimming material, from a control logic perspective, other structures or mechanisms that can theoretically affect the intensity of the introduced ambient light can exist, such as a variable aperture, a liquid lens, a deformable light-guiding film, etc. This application is not limited to a specific type of dimming mechanism, and these will not be listed or described one by one in this application.

[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments. In addition, the above embodiments can be freely combined as needed.

Claims

1. A low-power electronic device, characterized in that: include: A main control chip and an LED backlight are provided inside the electronic device, and a display device is provided on a first surface of the electronic device, wherein the side of the display device facing the interior of the electronic device has a backlight layer, and the LED backlight is suitable for providing light to the backlight layer; The electronic device has a light-transmitting area arranged at one side edge of the display device, the light-transmitting area includes a lens structure, which is suitable for introducing an external light source and focusing the external light source onto the backlight layer; The main control chip controls the luminous intensity of the LED backlight source according to the real-time brightness of the display device.

2. The electronic device according to claim 1, wherein The light transmittance of the light-transmitting area is greater than 99%.

3. The electronic device according to claim 1, wherein The lens structure includes a Fresnel lens or a convex lens.

4. The electronic device according to any one of claims 1 to 3, characterized in that: It also includes a light guide device connected to the lens structure, wherein the light guide device has at least one prism structure inside, suitable for guiding the focused external light source into the backlight layer, and the at least one prism structure includes a first prism structure.

5. The electronic device according to claim 4, characterized in that The lens structure is elliptical, the light guide device has a first opening and a second opening, and the first opening matches the lens structure; The external light source is focused by the lens structure and then incident on the first prism structure. The first prism structure refracts the focused external light source so that the external light source is incident on the backlight layer through the second opening in the form of parallel light. Wherein, the second opening faces the backlight layer.

6. The electronic device according to claim 5, characterized in that The light guide device is an opaque light guide body, and the light guide device is an elliptical cylinder, and the size of the second opening is smaller than that of the first opening.

7. The electronic device according to claim 4, wherein: It also includes a brightness sensor arranged on the backlight layer, which is suitable for transmitting brightness data to the main control chip, and the brightness data is used to represent the real-time brightness of the display device.

8. The electronic device according to claim 7, wherein: When the real-time brightness of the display device is less than a first preset brightness value, the main control chip increases the luminous intensity of the LED backlight source so that the real-time brightness of the display device reaches the first preset brightness value; When the real-time brightness of the display device is greater than a second preset brightness value, the main control chip reduces the influence of the external light source on the backlight layer, so that the real-time brightness of the display device returns to below the second preset brightness value; The second preset brightness value is greater than the first preset brightness value.

9. The electronic device according to claim 8, wherein: It also includes an opening baffle disposed between the light guide device and the backlight layer, adapted to control the brightness of the light guide device incident on the backlight layer; When the real-time brightness of the display device is greater than the second preset brightness value, the main control chip controls the opening baffle through the driving device to reduce the opening size of the opening baffle.

10. The electronic device according to claim 8, wherein The light-transmitting area further comprises an optical element having an electrically controlled dimming material, adapted to control the brightness of the external light source incident upon the lens structure; When the real-time brightness of the display device is greater than the second preset brightness value, the main control chip controls the light guiding degree of the optical element by changing the voltage value applied to the electrically controlled dimming material to reduce the luminous flux.

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