Brightness adjustment system of an electronic device

Abstract

The present application relates to the technical field of electronic equipment, and discloses a brightness adjusting system of electronic equipment, which comprises a reader shell and further comprises a display module, an induction module and a backlight adjusting module.The display module is arranged in a through hole formed in the outer wall of the reader shell and is used for displaying text and patterns.The induction module is arranged on the outer wall of the reader shell and is used for detecting the ambient light intensity.The backlight adjusting module is arranged below the display module and is used for actively adjusting the backlight intensity.The main control module is electrically connected with the display module, the induction module and the backlight adjusting module and is used for controlling the display module, the induction module and the backlight adjusting module.The present application can adjust the light without changing the current intensity of the LED lamp, can reduce the overall power consumption of the device and can improve the service life of the device.

Description

A brightness adjustment system for an electronic device Technical Field

[0001] This invention relates to the field of electronic device technology, and in particular to a brightness adjustment system for an electronic device. Background Technology

[0002] E-ink displays are electronic devices, specifically screens that use electronic ink. They are also known as electronic paper display technology. E-ink is a revolutionary new method and technology for displaying information. Like most traditional inks, electronic ink and the circuitry that changes its color can be printed onto many surfaces, from flexible plastics and polyester films to paper and fabric.

[0003] A Chinese patent publication (CN108735165A) discloses an e-ink screen backlight system, comprising an EINK panel, a light sensor, and a backlight module. The EINK panel includes an EINK screen with 0-255 grayscale display capability and a light-sensing algorithm module. The backlight module includes a backlight source and a backlight control module for adjusting the brightness of the backlight source. The light-sensing algorithm module includes a light-sensing test bar and a framebuffer. The light sensor is located between the EINK panel and the backlight module, in a shielded state, and only receives ambient light projected perpendicularly to the EINK panel. A method for adjusting the backlight of an e-ink screen is also disclosed. By sensing the ambient light index through the shielded light sensor, the optimal eye protection mode is determined. After entering eye protection mode, the fitted grayscale value calculated by the backlight control module is used to adjust the optimal reading brightness in dim lighting conditions to protect the eyes from damage.

[0004] In the aforementioned patent, the light sensor is located between the EINK panel and the backlight module, and is in a shielded state. During use, it can only receive ambient light projected perpendicularly to the EINK panel. In dim lighting conditions, the position of the light source is often different. During use, the light illuminating the back panel is different from the light actually emitted perpendicularly to the light sensor. The light sensor is prone to errors during detection, which leads to errors in the data calculated by the backlight control module, reducing the adjustment effect of the device. At the same time, the backlight control module generally changes the illumination intensity of the LED light by changing the current intensity. When a strong current passes through the LED light, it increases the current intensity of the circuit board, causing the circuit board circuit to generate heat load and reducing the lifespan of the device.

[0005] Therefore, we propose a brightness adjustment system for electronic devices to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a brightness adjustment system for electronic devices to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a brightness adjustment system for an electronic device, comprising a reader housing, and further comprising:

[0008] The display module is disposed in a through hole on the outer wall of the reader housing, and is used for displaying text and patterns;

[0009] A sensing module is disposed on the outer wall of the reader housing and is used to detect the intensity of ambient light.

[0010] A backlight adjustment module is provided, which is located below the display module and is used to actively adjust the backlight intensity.

[0011] The main control module is electrically connected to the display module, the sensing module, and the backlight adjustment module, and is used to control the display module, the sensing module, and the backlight adjustment module.

[0012] The backlight adjustment module includes an outer dimming cover and an inner dimming cover. The outer dimming cover is fitted over the inner dimming cover, and the inner side of the inner dimming cover is provided with an LED lamp body. The outer dimming cover and the inner dimming cover are used to adjust the light intensity of the LED lamp body.

[0013] Through the above technical solution, the sensing module can accurately detect the external environment and adjust the backlight through the backlight adjustment module to make the display module display a suitable brightness, thus protecting the user's eyes. At the same time, it can judge the environment and automatically adjust the brightness of the display module.

[0014] Preferably, the display module includes an e-ink screen substrate assembly, the outer area of ​​which is larger than the inner area of ​​the through-holes opened on the surface of the reader housing, and the interior of the e-ink screen substrate assembly is provided with uniformly distributed microcapsules, the interior of which is provided with positively charged white particles and negatively charged black particles.

[0015] Through the above technical solution, the microcapsules store positively charged white particles and negatively charged black particles. By changing the polarity of the electric field at the upper and lower sections of the ink screen substrate, the positively charged white particles and negatively charged black particles are adsorbed individually. By adsorbing the black and white particles inside different microcapsules, different texts and patterns can be formed.

[0016] Preferably, the backlight adjustment module further includes:

[0017] A light guide plate is disposed below the water-ink screen substrate assembly;

[0018] LED light fixing strips are arranged on both sides of the light guide plate;

[0019] An external dimming cover is disposed on the side of the LED lamp fixing strip near the light guide plate. An internal dimming cover is disposed on the inner side of the external dimming cover. A cover fixing seat is disposed at the lower end of the external dimming cover. The cover fixing seat is fixed inside the LED lamp fixing strip. An LED lamp body is disposed on the inner side of the internal dimming cover. An LED lamp fixing seat is disposed at the lower end of the LED lamp body. The LED lamp fixing seat is disposed inside the LED lamp fixing strip. The external dimming cover and the internal dimming cover have interconnected cavities inside them. The interior of the external dimming cover and the internal dimming cover is filled with colored charged particles. The colored charged particles are silver. Several electric field lines are disposed inside the cavity of the external dimming cover. Several electric field lines are disposed inside the cavity of the internal dimming cover.

[0020] Through the above technical solution, the backlight adjustment module is used to actively adjust the light intensity of the light guide plate, so that the light guide plate emits different brightness, which can change the backlight intensity of the e-ink screen substrate group and realize the adjustment of the brightness of the e-ink screen substrate group.

[0021] Preferably, the inner side of the reader housing is provided with two symmetrical substrate group limiting strips, and a control motherboard is provided between the two substrate group limiting strips. A battery pack is electrically connected below the control motherboard. The control motherboard is electrically connected to the outer wall of the e-ink screen substrate group. The control motherboard is electrically connected to several transmission lines, which are arranged inside the LED light fixing strip. A substrate gasket is provided between the e-ink screen substrate group and the reader housing.

[0022] Through the above technical solution, the substrate group limiting strip is used to fix the control motherboard and prevent the control motherboard from shaking.

[0023] Preferably, the outer wall of the control motherboard has a through hole, and a support column is provided in the through hole of the outer wall of the control motherboard. The lower end of the support column is fixedly connected to the inner wall of the reader housing.

[0024] Through the above technical solution, the support column is used to support the water-ink screen substrate assembly, so that the part of the water-ink screen substrate assembly near the center will not sink.

[0025] Preferably, the sensing module includes a light sensor, which is disposed at the edge of the through hole in the reader housing.

[0026] Through the above technical solution, the light sensor is used to detect ambient light. At the same time, the light sensor is located on the side of the e-ink screen substrate assembly. The light sensor detects the light intensity inside the e-ink screen substrate assembly, thereby increasing the accuracy of the detection.

[0027] Preferably, the light guide plate has grooves on both sides, and the internal shape of the grooves on the side of the light guide plate matches the external shape of the outer light-adjusting cover. There are a total of six transmission lines, of which two transmission lines form a group, and three groups of transmission lines are distributed in a triangular shape within the LED lamp fixing strip. One group of transmission lines is electrically connected to the LED lamp body, and the other two groups of transmission lines are symmetrically arranged within the LED lamp fixing strip. Connecting seats are provided on the outside of these two groups of transmission lines.

[0028] The outer light mask is fitted with a collar, which is threaded into a groove on the side of the light guide plate.

[0029] Through the above technical solution, the groove on the side of the light guide plate serves to accommodate the outer light mask, fix the position of the collar and the outer light mask, and prevent the LED lamp body inside the inner light mask from shifting.

[0030] Preferably, the upper end of the connector is provided with a clip fixing seat, and the upper end of the clip fixing seat is connected to a conical connecting piece clip. The lower end of the photomask fixing seat is provided with a groove corresponding to the position of the connecting piece clip. A connecting piece is provided in the groove at the lower end of the photomask fixing seat. The outer part of the connecting piece is "n"-shaped, and the tip of the connecting piece clip is inserted into the opening of the connecting piece. The upper end of the connecting piece is connected to a connecting wire one, and the other end of the connecting wire one is connected to a variable resistor assembly. The upper end of the variable resistor assembly is connected to several connecting wires two, and the other end of the connecting wires two is connected to electric field line one and electric field line two.

[0031] Through the above technical solution, the variable resistor component plays the role of changing the current, energizing different electric field lines one and two, changing the attraction of colored charged particles by electric field lines one and two, changing the light transmittance of the outer and inner light-adjusting covers, and at the same time changing the direction of light illumination, thereby adjusting the light intensity information emitted by the LED lamp body.

[0032] Preferably, the variable resistor assembly is provided with multiple variable resistors, and the variable resistors are connected to the connecting wires in two phases.

[0033] Preferably, the first electric field line is uniformly distributed inside the cavity of the outer dimming mask, and the second electric field line is uniformly distributed in an inclined manner on the conical inclined surface of the cavity of the inner dimming mask.

[0034] The above technical solution is used to control the effect of the current, so that the current passes through different electric field lines one and two. Electric field lines one and two form different adsorption ranges, thereby changing the position of the colored charged particles and achieving the effect of reflecting light.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] Firstly, this invention can adjust the light without changing the LED lamp current intensity, reducing the overall power consumption of the device and increasing its lifespan. By controlling the current to enter different electric field lines one and two through a variable resistor component, different adsorption regions are formed between electric field lines one and two. This allows colored charged particles in different regions to be adsorbed by electric field lines one and two, forming different reflective areas. The regions formed by the colored charged particles reflect the light emitted by the LED lamp body, allowing the light emitted by the LED lamp body to be focused together, increasing the intensity of the light in the irradiation direction, and enabling the light guide plate to emit higher brightness. This achieves the goal of changing the brightness of the light guide plate and the ink screen substrate without increasing the current intensity through the LED lamp body, thus preventing the LED lamp body from overloading.

[0037] Secondly, in this invention, the outer light mask cavity and the inner light mask cavity are connected, and the colored charged particles inside the outer light mask cavity and the inner light mask cavity can flow. When the colored charged particles enter the outer light mask cavity and the inner light mask cavity and form a reflective surface, the intensity of the LED lamp body's illumination direction is changed by different reflective surfaces, thereby achieving the effect of changing the brightness of the light guide plate.

[0038] Thirdly, in this invention, an electric field line one or an electric field line two is provided in the outer or inner light-adjusting mask cavity. The electric field line one or electric field line two adsorbs the colored charged particles, changing the distribution range of the colored charged particles. At the same time, the colored charged particles are silver. The outer light-adjusting mask is cylindrical. When the colored charged particles are in the outer light-adjusting mask cavity, they can reflect the light around the LED lamp body, making the light illuminating the light guide plate from the LED lamp body softer and easier for the user to adjust. The inner light-adjusting mask is conical. When the colored charged particles are in the inner light-adjusting mask cavity, the colored charged particles in the inner light-adjusting mask can effectively reflect the light, allowing the light to concentrate on one part and increasing the illumination effect of the illuminating direction.

[0039] Fourthly, in this invention, the LED lamp body is located inside the substrate pad. The substrate pad can block the light-emitting part of the LED lamp body, preventing the strong light emitted by the LED lamp body from being projected onto the part of the e-ink screen substrate assembly, preventing the formation of light spots on the surface of the e-ink screen substrate assembly, and improving the viewing effect.

[0040] Fifth, in this invention, the variable resistor assembly is composed of multiple sets of resistors. By controlling the current through different resistors, the current enters into different electric field lines one or two, so that electric field lines one or two can form different adsorption ranges. This allows colored charged particles to form different coverage ranges and create different reflected light effects. Attached Figure Description

[0041] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 is a partial structural diagram of the water-ink screen substrate assembly in this invention;

[0043] Figure 3 is an enlarged view of point A in Figure 2 of this invention;

[0044] Figure 4 is a schematic diagram of the LED lamp fixing strip structure in this invention;

[0045] Figure 5 is an enlarged view of section B in Figure 4 of this invention;

[0046] Figure 6 is a diagram showing the change in the coverage range of colored charged particles inside the external light-adjusting mask of the present invention;

[0047] Figure 7 shows the variation of the coverage range of colored charged particles inside the internal dimming mask of the present invention.

[0048] Figure 8 is a system diagram of the present invention.

[0049] In the diagram: 1. Reader housing; 2. E-ink screen substrate assembly; 3. Light sensor; 4. Support column; 5. Battery pack; 6. Control motherboard; 7. Substrate assembly limiting strip; 8. Substrate gasket; 9. Microcapsule; 10. Light guide plate; 11. LED lamp fixing strip; 12. LED lamp fixing base; 13. Collar; 14. External light cover; 15. Internal light cover; 16. LED lamp body; 17. Connector; 18. Connecting wire two; 19. Connecting wire one; 20. Light cover fixing base; 21. Connecting piece; 22. Connecting piece clip; 23. Clip fixing base; 24. Transmission line; 25. Variable resistor assembly; 26. Electric field line one; 27. Colored charged particles; 28. Electric field line two. Detailed Implementation

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., 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 with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example 1

[0054] In this embodiment of the invention, a brightness adjustment system for an electronic device, as shown in Figures 1-8, includes a reader housing 1 and further comprises:

[0055] The display module is located in a through hole on the outer wall of the reader housing 1, and is used for displaying text and patterns.

[0056] The sensing module is located on the outer wall of the reader housing 1 and is used to detect the intensity of ambient light.

[0057] The backlight adjustment module is located below the display module and is used to actively adjust the backlight intensity.

[0058] The main control module is electrically connected to the display module, the sensing module, and the backlight adjustment module. The main control module is used to control the display module, the sensing module, and the backlight adjustment module.

[0059] The backlight adjustment module includes an outer dimmer cover 14 and an inner dimmer cover 15. The outer dimmer cover 14 is fitted over the inner dimmer cover 15. An LED lamp body 16 is provided on the inner side of the inner dimmer cover 15. The light of the LED lamp body 16 is adjusted by the outer dimmer cover 14 and the inner dimmer cover 15.

[0060] The sensing module can accurately detect the external environment and adjust the backlight through the backlight adjustment module to make the display module display a suitable brightness, thus protecting the user's eyes. At the same time, it can judge the environment and automatically adjust the brightness of the display module. This device can increase the brightness of the light guide plate 10 and the brightness of the ink screen substrate group 2 without increasing the input current of the LED lamp body 16.

[0061] As shown in Figures 1-3, the display module includes an e-ink screen substrate group 2. The external area of ​​the e-ink screen substrate group 2 is larger than the internal area of ​​the through hole opened on the surface of the reader housing 1. The e-ink screen substrate group 2 is provided with uniformly distributed microcapsules 9. The microcapsules 9 are provided with positively charged white particles and negatively charged black particles.

[0062] Microcapsules 9 store positively charged white particles and negatively charged black particles. By changing the electric field at the upper and lower sections of the ink screen substrate 2, positively charged white particles and negatively charged black particles are adsorbed individually. By adsorbing black and white particles inside different microcapsules 9, different texts and patterns can be formed.

[0063] As shown in Figures 2-5, the backlight adjustment module also includes:

[0064] Light guide plate 10 is disposed below the ink screen substrate group 2;

[0065] LED lamp fixing strip 11 is provided on both sides of the light guide plate 10. The LED lamp fixing strip 11 is fixed on both sides of the light guide plate 10 to fix the position of the LED lamp body 16 and prevent the LED lamp body 16 from detaching from the light guide plate 10.

[0066] An external light mask 14 is disposed on the side of the LED lamp fixing strip 11 near the light guide plate 10. An internal light mask 15 is disposed inside the external light mask 14. A light mask fixing seat 20 is disposed at the lower end of the external light mask 14. The light mask fixing seat 20 is fixed inside the LED lamp fixing strip 11. An LED lamp body 16 is also disposed inside the internal light mask 15. An LED lamp fixing seat 12 is disposed at the lower end of the LED lamp body 16. The LED lamp fixing seat 12 is disposed inside the LED lamp fixing strip 11. The external light mask 14 and the internal light mask 15 have interconnected cavities. The internal cavities of the external light mask 14 and the internal light mask 15 are filled with colored charged particles 27. The colored charged particles 27 are silver. A number of electric field lines 1-26 are disposed inside the cavity of the external light mask 14. A number of electric field lines 2-28 are disposed inside the cavity of the internal light mask 15.

[0067] The backlight adjustment module is used to actively adjust the light intensity of the light guide plate 10, so that the light guide plate 10 emits different brightness. This can change the backlight intensity of the e-ink screen substrate group 2 and realize the adjustment of the brightness of the e-ink screen substrate group 2. The outer light mask 14 and the inner light mask 15 are sleeved on the outside of the LED lamp body 16. The electric field line 1 26 or the electric field line 28 can attract colored charged particles 27, so that the colored charged particles 27 can form different coverage areas. In this way, the colored charged particles 27 can form different areas of reflected light. By changing the amount of reflected light, the brightness of the light guide plate 10 is changed, thereby realizing the function of changing the brightness of the e-ink screen substrate group 2.

[0068] As shown in Figures 2 and 3, two symmetrical substrate group limiting strips 7 are provided on the inner side of the reader housing 1. A control motherboard 6 is provided between the two substrate group limiting strips 7. A battery pack 5 is electrically connected below the control motherboard 6. The control motherboard 6 is electrically connected to the outer wall of the e-ink screen substrate group 2. Several transmission lines 24 are electrically connected to the control motherboard 6. The transmission lines 24 are set inside the LED light fixing strip 11. A substrate gasket 8 is provided between the e-ink screen substrate group 2 and the reader housing 1.

[0069] The substrate group limiting strip 7 is used to fix the control motherboard 6 and prevent the control motherboard 6 from shaking, while the substrate pad 8 can cover the LED lamp body 16 to prevent the light spot emitted by the LED lamp body 16 from being displayed on the e-ink screen substrate group 2, thereby improving the display effect of the e-ink screen substrate group 2.

[0070] As shown in Figure 2, the outer wall of the control motherboard 6 has a through hole, and a support column 4 is provided in the through hole of the outer wall of the control motherboard 6. The lower end of the support column 4 is fixedly connected to the inner wall of the reader housing 1.

[0071] The support column 4 is used to support the water-ink screen substrate 2, so that the part of the water-ink screen substrate 2 near the center will not sink.

[0072] As shown in Figure 1, the sensing module includes a light sensor 3, which is located at the edge of the through hole in the reader housing 1.

[0073] The light sensor 3 is used to detect ambient light. At the same time, the light sensor 3 is located on the side of the ink screen substrate 2. The light sensor 3 detects the light intensity inside the ink screen substrate 2, thereby increasing the accuracy of the detection.

[0074] As shown in Figures 4 and 5, grooves are provided on both sides of the light guide plate 10. The internal shape of the grooves on the side of the light guide plate 10 matches the external shape of the external light-adjusting cover 14. A total of six transmission lines 24 are provided. Two transmission lines 24 form a group, and three groups of transmission lines 24 are distributed in a triangular shape in the LED lamp fixing strip 11. One group of transmission lines 24 is electrically connected to the LED lamp body 16, and the other two groups of transmission lines 24 are symmetrically arranged in the LED lamp fixing strip 11. Connecting seats 17 are provided on the outside of the two groups of transmission lines 24.

[0075] The outer light mask 14 is fitted with a collar 13. The collar 13 is threaded into the side groove of the light guide plate 10. The collar 13 can fix the outer light mask 14 and increase the stability of the outer light mask 14.

[0076] The groove on the side of the light guide plate 10 serves to accommodate the outer dimming cover 14, fixing the position of the collar 13 and the outer dimming cover 14 to prevent the LED lamp body 16 inside the inner dimming cover 15 from shifting. The transmission line 24 is used to transmit current. One set can connect all the LED lamp bodies 16, while the other two transmission lines 24 can transmit current to electric field line 1 26 and electric field line 28.

[0077] As shown in Figures 4 and 5, the upper end of the connector 17 is provided with a clip fixing seat 23, and the upper end of the clip fixing seat 23 is connected to a conical connecting piece clip 22. The lower end of the photomask fixing seat 20 is provided with a groove corresponding to the position of the connecting piece clip 22. A connecting piece 21 is provided in the groove at the lower end of the photomask fixing seat 20. The outer part of the connecting piece 21 is "n" shaped, and the tip of the connecting piece clip 22 is inserted into the opening of the connecting piece 21. The tip of the connecting piece clip 22 can be locked in the opening of the connecting piece 21. Through the above structure, the current can be transmitted to the variable resistor assembly 25 through the connecting line 19. The upper end of the connecting piece 21 is connected to the connecting line 19, and the other end of the connecting line 19 is connected to the variable resistor assembly 25. The upper end of the variable resistor assembly 25 is connected to several connecting lines 28, and the other end of the connecting lines 28 is connected to the electric field line 16 and the electric field line 28.

[0078] The variable resistor assembly 25 is provided with multiple variable resistors, and the variable resistors are connected to the connecting line 18.

[0079] The variable resistor component 25 changes the current, energizes different electric field lines 26 and 28, changes the attraction of colored charged particles 27 by electric field lines 26 and 28, changes the light transmittance of the outer light mask 14 and the inner light mask 15, and can also change the direction of light illumination, thereby adjusting the light intensity information emitted by the LED lamp body 16.

[0080] Example 2

[0081] Based on the brightness adjustment system for an electronic device provided in the first embodiment of this application, the second embodiment of this application proposes another brightness adjustment system for an electronic device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0082] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0083] Based on Embodiment 1, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 also has the following features: as shown in Figures 6 and 7, electric field line 1 26 is uniformly distributed inside the cavity of the outer dimming mask 14, and electric field line 28 is uniformly distributed in an inclined manner on the conical inclined surface of the cavity of the inner dimming mask 15.

[0084] The aforementioned structure controls the current, allowing it to pass through different electric field lines 26 and 28. These electric field lines 26 and 28 form different adsorption ranges, thus changing the position of the colored charged particles 27 and achieving the effect of reflecting light. The inner light-adjusting mask 15 is conical. When the colored charged particles 27 adhere to the cavity of the inner light-adjusting mask 15, they form a conical reflector. This reflector concentrates the light onto the light guide plate 10, increasing the overall brightness of the light guide plate 10. In Figure 6, a1 represents the outer light-adjusting mask 14 without obstruction. In Figure 7, a2 represents the state where the outer light-diffusing mask 14 has a gap in its obstruction, and a2 represents the state where the outer light-diffusing mask 14 is fully obstructed. In Figure 7, b1 represents the state where the inner light-diffusing mask 15 is not obstructed, b2 represents the state where the inner light-diffusing mask 15 has a gap in its obstruction. In this state, the light generated by the LED lamp body 16 is not fully reflected, thus increasing the illumination effect of the LED lamp body 16. b3 represents the state where the inner light-diffusing mask 15 is fully obstructed. In this state, the inner light-diffusing mask 15 can reflect all the light generated by the LED lamp body 16, allowing a large amount of the generated light to illuminate the light guide plate 10, thereby increasing the brightness of the light guide plate 10.

[0085] The working principle of this invention is as follows: When the device is in use, the light sensor 3 detects the ambient light, and then the light sensor 3 transmits the detection data to the control motherboard 6. The control motherboard 6 controls the LED lamp body 16 according to the data.

[0086] When used under normal daylight conditions, the ambient light detected by the light sensor 3 is at a normal value. At this time, the control motherboard 6 controls the LED light body 16 to turn off, and the natural light is reflected by the light guide plate 10, so that the back of the ink screen substrate 2 can form a certain brightness. At this time, the ink screen substrate 2 can be used normally.

[0087] When the device is moved to a dark or dimly lit environment, the light sensor 3 detects that the ambient light level is lower than normal. The light sensor 3 then transmits the data to the control motherboard 6, which controls the LED lamp body 16 to emit light. The light emitted by the LED lamp body 16 illuminates the light guide plate 10, causing the light guide plate 10 to light up, thus illuminating the back of the e-ink screen substrate 2. This reveals the patterns or documents formed by the particles inside the microcapsules 9 on the e-ink screen substrate 2. Simultaneously, the light sensor 3 detects the brightness of the e-ink screen substrate 2. When the light intensity is too low, the variable resistor assembly 25 controls the current to enter the widely spaced electric field lines 26. The widely spaced electric field lines 26 attract the colored charged particles 27, causing the colored charged particles 27 to form a reflective surface with gaps. The light is reflected by the reflective surface with gaps inside the outer light cover 14, improving the illumination effect of the LED lamp body 16. At this time, if the light sensor 3 detects that the brightness of the ink screen substrate group 2 is insufficient, the variable resistor assembly 25 controls the current to enter more electric field lines 26, increasing the area of ​​the colored charged particles 27 and improving the effect of reflecting light.

[0088] If the brightness of the e-ink screen substrate 2 still needs to be increased, the current is controlled to enter the electric field line 28 by the variable resistor component 25. Similarly, the area covered by the colored charged particles 27 is controlled by the electric field line 28 to increase the effect of reflecting light. At the same time, the inner light mask 15 is conical. The colored charged particles 27 covered by the cone on the inner side of the inner light mask 15 can effectively irradiate the light onto the light guide plate 10, increase the intensity of the light irradiating the light guide plate 10, improve the overall brightness of the light guide plate 10, and increase the brightness of the e-ink screen substrate 2.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A brightness adjustment system for an electronic device, comprising a reader housing (1), characterized in that, The device includes: a display module, which is disposed within a through hole on the outer wall of the reader housing (1) and is used for displaying text and images; the display module includes an e-ink substrate assembly (2), the outer area of ​​which is larger than the inner area of ​​the through hole on the surface of the reader housing (1), and the interior of the e-ink substrate assembly (2) is provided with uniformly distributed microcapsules (9), the interior of which is provided with positively charged white particles and negatively charged black particles; a sensing module, which is disposed on the outer wall of the reader housing (1) and is used for detecting ambient light intensity; and a backlight. The backlight adjustment module is located below the display module and is used to actively adjust the backlight intensity. The main control module is electrically connected to the display module, the sensing module, and the backlight adjustment module, and is used to control these components. The backlight adjustment module includes a light guide plate (10), an LED lamp fixing strip (11), an outer dimming cover (14), and an inner dimming cover (15). The outer dimming cover (14) is fitted over the inner dimming cover (15), and an LED lamp body (16) is provided on the inner side of the inner dimming cover (15). The backlight adjustment module is controlled by the outer dimming cover (14) and the inner dimming cover (15). The cover (15) adjusts the light of the LED lamp body (16): the light guide plate (10) is set below the ink screen substrate group (2); the LED lamp fixing strip (11) is set on both sides of the light guide plate (10); the external light adjustment cover (14) is set on the side of the LED lamp fixing strip (11) close to the light guide plate (10), the inner side of the external light adjustment cover (14) is provided with an internal light adjustment cover (15), the lower end of the external light adjustment cover (14) is provided with a light cover fixing seat (20), the light cover fixing seat (20) is fixed inside the LED lamp fixing strip (11), and the inner side of the internal light adjustment cover (15) is also provided with LED lamp body (16), LED lamp holder (12) is provided at the lower end of the LED lamp body (16), LED lamp holder (12) is provided in the LED lamp fixing strip (11), the outer dimming cover (14) and the inner dimming cover (15) are provided with interconnected cavities, and the outer dimming cover (14) and the inner dimming cover (15) are filled with colored charged particles (27), the colored charged particles (27) are silver, a number of electric field lines I (26) are provided on the inner side of the cavity of the outer dimming cover (14), and a number of electric field lines II (28) are provided in the cavity of the inner dimming cover (15).

2. The brightness adjustment system for an electronic device according to claim 1, characterized in that, The inner side of the reader housing (1) is provided with two symmetrical substrate group limiting strips (7), and a control motherboard (6) is provided between the two substrate group limiting strips (7). A battery pack (5) is electrically connected below the control motherboard (6). The control motherboard (6) is electrically connected to the outer wall of the e-ink screen substrate group (2). The control motherboard (6) is electrically connected to several transmission lines (24). The transmission lines (24) are set in the LED lamp fixing strip (11). A substrate gasket (8) is provided between the e-ink screen substrate group (2) and the reader housing (1).

3. The brightness adjustment system for an electronic device according to claim 2, characterized in that, The outer wall of the control motherboard (6) has a through hole, and a support column (4) is provided in the through hole of the outer wall of the control motherboard (6). The lower end of the support column (4) is fixedly connected to the inner wall of the reader housing (1).

4. The brightness adjustment system for an electronic device according to claim 1, characterized in that, The sensing module includes a light sensor (3), which is located at the edge of the through hole in the reader housing (1).

5. The brightness adjustment system for an electronic device according to claim 3, characterized in that, The light guide plate (10) has grooves on both sides. The shape of the grooves on the side of the light guide plate (10) matches the shape of the outer light mask (14). There are six transmission lines (24). Two transmission lines (24) are in one group, and three groups of transmission lines (24) are triangularly distributed in the LED lamp fixing strip (11). One group of transmission lines (24) is electrically connected to the LED lamp body (16), and the other two groups of transmission lines (24) are symmetrically arranged in the LED lamp fixing strip (11). Connecting seats (17) are provided on the outside of the two groups of transmission lines (24). A collar (13) is sleeved on the outside of the outer light mask (14). The collar (13) is threaded in the groove on the side of the light guide plate (10).

6. The brightness adjustment system for an electronic device according to claim 5, characterized in that, The upper end of the connector (17) is provided with a clip fixing seat (23), and the upper end of the clip fixing seat (23) is connected with a conical connecting piece clip (22). The lower end of the photomask fixing seat (20) is provided with a groove corresponding to the position of the connecting piece clip (22). The lower end of the photomask fixing seat (20) is provided with a connecting piece (21). The outer side of the connecting piece (21) is "n" shaped, and the tip of the connecting piece clip (22) is inserted into the opening of the connecting piece (21). The upper end of the connecting piece (21) is connected with a connecting line one (19). The other end of the connecting line one (19) is connected with a variable resistor assembly (25). The upper end of the variable resistor assembly (25) is connected with several connecting lines two (18). The other end of the connecting lines two (18) is connected to electric field line one (26) and electric field line two (28).

7. The brightness adjustment system for an electronic device according to claim 6, characterized in that, The variable resistor assembly (25) is provided with multiple variable resistors, and the variable resistors are connected to the connecting line two (18).

8. The brightness adjustment system for an electronic device according to claim 6, characterized in that, The electric field line one (26) is uniformly distributed inside the cavity of the outer dimming mask (14), and the electric field line two (28) is uniformly distributed in an inclined manner on the conical inclined surface of the cavity of the inner dimming mask (15).

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