Mirror display screen and adaptive light emitting control method thereof

Abstract

The application relates to a mirror display screen and an adaptive light-emitting control method thereof. The mirror display screen comprises an integrated silver substrate, a PCBA circuit board provided with a light-emitting unit, a funnel-shaped opening structure located on the light-emitting side of the light-emitting unit, and a light-shielding layer. The funnel-shaped opening structure directs the light emitted by the light-emitting unit to the integrated silver substrate, and the light-shielding layer inhibits light crosstalk between adjacent light-emitting areas. The adaptive light-emitting control method determines the mirror reflection interference amount falling on each area of the display area, and adjusts the light-emitting parameters of the display area according to the mirror reflection interference amount, so as to compensate the influence of the mirror reflection interference on the visibility of the display content. The application enables the mirror and the high-definition display to coexist in the same structure, and can adaptively compensate the display according to the mirror reflection interference, thereby improving the visibility of the display content under complex lighting.

Description

Technical Field

[0001] This application relates to the field of displays, and in particular to a mirror display screen and its adaptive light emission control method. Background Technology

[0002] Mirror-like display devices need to possess both mirror reflection and information display functions; that is, they should appear as a mirror when the screen is off and display content when the screen is on. Current mirror-like display methods typically involve placing a reflective layer on the display side and creating light-transmitting holes on the reflective layer corresponding to the light-emitting units, allowing light from the light-emitting units to escape through these holes. Alternatively, the electrode structure inside the display device can be adjusted to increase light transmittance. However, in these methods, the distribution of mirror reflection and display transmission is fixed during manufacturing. The mirror effect and display brightness are inversely related; the better the mirror finish, the darker the transmitted display and the blurrier the displayed content.

[0003] Since the distribution of reflection and transmission is fixed and does not change with the environment, when the ambient light is strong, the ambient light reflected by the mirror layer will be superimposed on the viewing side, thus interfering with the visibility of the displayed content and causing the displayed content to be blurry and distorted. The existing automatic dimming only adjusts the display brightness based on the ambient illuminance and does not take the interference of mirror reflection light on the display content as the basis for adjustment. Therefore, it cannot compensate for the interference of mirror reflection, which ultimately leads to the difficulty in achieving both mirror effect and display effect and poor environmental adaptability. Summary of the Invention

[0004] In order to achieve the coexistence of mirror and high-definition display in terms of structure, and to adaptively compensate for the interference of mirror reflection, thereby solving the problems of existing mirror displays that make it difficult to balance the mirror effect and display effect, the interference of mirror reflection light on the visibility of display content, and poor environmental adaptability, this application provides a mirror display screen and its adaptive light emission control method.

[0005] In a first aspect, this application provides a mirror display screen, which adopts the following technical solution: A mirror display screen includes: an integral silver substrate configured to exhibit mirror reflection in a non-light-emitting state and transmit display content in a light-emitting state; a PCBA circuit board having light-emitting units on it; a funnel-shaped opening structure disposed on the light-emitting side of the light-emitting units, with each opening on the funnel-shaped opening structure aligned with the light-emitting units and configured to directionally guide the light emitted by the light-emitting units to the integral silver substrate; and a light-shielding layer located between the openings and configured to suppress light crosstalk between adjacent light-emitting areas; wherein, along the light-emitting direction of the light-emitting units, the PCBA circuit board, the funnel-shaped opening structure, and the integral silver substrate are stacked sequentially.

[0006] By adopting the above technical solutions, the integrated silver substrate presents a mirror-like surface when the screen is off and transmits the display content when the screen is on, providing a basis for the coexistence of mirror and display. The funnel-shaped opening structure directs the light from the light-emitting unit along the light-emitting direction, reducing light loss when passing through the mirror layer and concentrating the light towards the viewing side. The light-shielding layer fills between each opening, suppressing light crosstalk between adjacent light-emitting areas and preventing light leakage between light-emitting areas from causing display blurring. The above layers are stacked sequentially along the light-emitting direction, so that the mirror reflection effect can be maintained on the same substrate, while clear display content can be transmitted, achieving the coexistence of high-quality mirror and high-definition display at the structural level.

[0007] Optionally, a reflective layer is provided on the wall of each opening, and the reflective layer is configured to converge the light emitted by the light-emitting unit to the integral silver substrate; a light-shielding layer is continuously filled between each opening and is configured to work with the reflective layer to suppress light crosstalk between adjacent light-emitting areas.

[0008] By adopting the above technical solution, the aperture wall reflective layer concentrates the light that originally diffused laterally toward the direction of the integrated silver substrate, thereby improving the light extraction efficiency. In conjunction with the continuously filled light-shielding layer, it further suppresses light crosstalk between adjacent light-emitting areas.

[0009] Optionally, the slope of the hole wall of each opening is set differently according to the specular reflection intensity of each opening location, wherein the slope of the hole wall of the opening in the location with higher specular reflection intensity is greater than the slope of the hole wall of the opening in the location with lower specular reflection intensity.

[0010] By adopting the above technical solution, a larger aperture wall slope is used in areas with higher specular reflection intensity, so that the light in these areas is directed to the observation side with a higher degree of convergence, thereby providing stronger light output in areas with strong reflection to maintain display readability.

[0011] Optionally, each opening in the funnel-shaped opening structure is divided into multiple opening groups according to its location. The slope of the hole wall and the hole distribution density of each opening in each opening group are uniformly configured according to the specular reflection intensity of the area where the opening group is located. Each opening group corresponds to a compensation zone whose light emission parameters can be adjusted independently.

[0012] By adopting the above technical solution, each aperture group is uniformly configured according to the specular reflection intensity of its location, and corresponds one-to-one with the compensation zone whose light emission parameters can be adjusted independently. This makes the structural partitioning provide a physical basis for subsequent partition compensation, and realizes the synergy between structure and control.

[0013] Optionally, the integrated silver substrate is made of ultra-white glass and chemically tempered, with a surface hardness greater than 6H.

[0014] By adopting the above technical solutions, ultra-clear glass reduces the color distortion of transmitted light, and chemical tempering improves the scratch resistance of the substrate surface, making it suitable for the operating conditions of home appliance panels.

[0015] Optionally, the back of the integrated silver substrate is provided with a semi-transparent black layer and an overlaid black ink layer, the transmittance of which is about 6%.

[0016] By adopting the above technical solution, a semi-transparent black layer with a transmittance of about 6% hides the structure behind the screen when the screen is off to ensure a mirror-like appearance, while allowing the light-emitting area to shine through when the screen is on, thus balancing the mirror-like appearance and transparency.

[0017] Optionally, the thickness and slope of the funnel-shaped opening structure can be configured within a pre-selected range.

[0018] By adopting the above technical solution, the thickness of the funnel hole and the slope of the hole wall are optimized within a pre-selected range, and the light output and light output direction are adjusted to balance the light output efficiency and crosstalk suppression.

[0019] Optionally, a temperature digital tube, segmented scale bar, and capacitive touch keys can be integrated on the PCBA circuit board and brought out through a flexible circuit board, which has a grounding pin.

[0020] By adopting the above technical solution, the display and touch functions are integrated into the same PCBA circuit board and brought out through a flexible circuit board, simplifying the assembly of the mirror display screen and the whole machine.

[0021] Secondly, this application provides an adaptive light emission control method for a mirror display screen, employing the following technical solution: An adaptive light emission control method for a mirror display screen, the mirror display screen including an integrated silver substrate, a PCBA circuit board with light emission units, a funnel-shaped opening structure located on the light emission side of the light emission units, and a light-shielding layer for suppressing light crosstalk, the method including: S1. determining the amount of specular reflection interference falling on each location in the display area of ​​the mirror display screen; S2. adjusting the light emission parameters of the display area according to the amount of specular reflection interference in each location, so as to compensate for the impact of specular reflection interference on the visibility of the displayed content.

[0022] By adopting the above technical solution, the amount of specular reflection interference falling on each area of ​​the display area is used as the basis for adjusting the light emission, which is different from overall dimming based solely on ambient illuminance. By determining the amount of specular reflection interference for each area and adjusting the light emission parameters in each area, areas with stronger reflection receive stronger compensation, while areas with weaker reflection maintain lower light emission. This not only specifically counteracts the interference of specular reflection light on the displayed content, but also avoids the increase in energy consumption and decrease in mirror effect caused by uniform brightening of the entire screen. As a result, the visibility of the displayed content is maintained under different ambient light and different viewing geometry, improving the environmental adaptability of the specular display screen.

[0023] Optionally, S2 includes: when adjusting the light emission parameters, determining the back-reflection interference component of the display light reflected back to the adjacent area via the integrated silver substrate mirror, and subtracting the back-reflection interference component as negative feedback from the adjustment amount of the light emission parameters.

[0024] By adopting the above technical solution, the secondary interference formed by the back reflection of the brightened display light through the integrated silver substrate is deducted as negative feedback, thus avoiding overcompensation or even self-excitation under the unique back reflection circuit of the mirror screen, and making the compensation amount converge to a stable value.

[0025] Optionally, before determining the backlight interference component, the feedforward component of the backlight interference component is estimated in advance based on the predetermined emission value of the content to be displayed. When adjusting the emission parameters, the feedforward component is subtracted first, and then the residual backlight after subtracting the feedforward component is corrected by negative feedback.

[0026] By adopting the above technical solution, the main part of the backlight interference is first deducted by feedforward based on the predetermined light emission value of the content to be displayed, and then the residual backlight is corrected by negative feedback, thereby reducing the lag of simple negative feedback and improving the response speed of compensation.

[0027] Optionally, in response to the fact that the adjustment amount of the light emission parameters after deducting the backlight interference component still makes the visibility of the target location in the display area lower than the preset visibility threshold, the key display content of the target location is moved to a location where the specular reflection interference is lower than that of the target location for display.

[0028] By adopting the above technical solution, when increasing the luminous intensity still cannot make the target area reach the visibility threshold, the key display content is moved to an area with weaker reflectivity. This ensures the readability of key information without increasing the luminous power, thus breaking through the power limit of simply increasing brightness.

[0029] Optionally, after the critical display content is migrated, the importance level of each display content is determined according to the main control menu status of the mirror display screen, and compensation power is allocated to each display content within the preset compensation power budget according to the importance level.

[0030] By adopting the above technical solution, when the compensation power budget is limited, the importance of each displayed content is judged based on the status of the main control menu, and compensation power is allocated to the more important content first, so that the limited power is concentrated on key information.

[0031] Optionally, each opening in the funnel-shaped opening structure has a wall slope, and S1 includes: determining the specular reflection geometry of each area in the display area based on the light emission direction corresponding to the wall slope of each opening, and determining the specular reflection interference amount of each area according to the specular reflection geometry of each area.

[0032] By adopting the above technical solution, the specular reflection geometry of each location can be inferred from the known emission direction corresponding to the slope of each opening wall. The specular reflection interference of each location can be determined without additional optical path detection, making the structural parameters the basis for interference estimation.

[0033] Optionally, the amount of mirror reflection interference in each area can be weighted based on the preset installation posture and preset observation position of the mirror display screen.

[0034] By adopting the above technical solution, and combining the fixed installation posture of the home appliance panel with the operator's position, the interference in each area is weighted so that the compensation resources are concentrated on the area with the strongest reflection from the main viewing angle.

[0035] Optionally, the difference in polarization state between the specular reflected light and the displayed light can be used to distinguish specular reflection interference from the mixed light.

[0036] By adopting the above technical solution, the reflected interference and the display's own light can be distinguished by the difference in polarization state, thereby improving the accuracy of interference estimation without increasing the number of light sensors.

[0037] Optionally, when residuals still exist in polarization differentiation, the reflective area can be located through camera image analysis and cross-validated with the polarization differentiation results.

[0038] By adopting the above technical solution, image analysis is used to cross-verify the residuals of polarization differentiation, thereby further improving the accuracy of reflective area positioning.

[0039] Optionally, the ambient light trend for subsequent periods can be predicted based on the geographical location of the mirror display, the current time, and historical usage data, and feedforward pre-compensation can be performed, with weather forecast data incorporated during the prediction.

[0040] By adopting the above technical solution, ambient light changes can be predicted and compensated in advance based on location, time and historical data, thereby reducing the lag and flicker of real-time dimming.

[0041] Optionally, when prediction bias accumulates, the prediction model can be corrected online based on historical data on specular reflection interference and compensation effects.

[0042] By adopting the above technical solution, the prediction model is corrected online using historical interference and compensation data, so that the prediction gradually fits the usage scenario.

[0043] Optionally, the adjustment amount of the light emission parameters is processed according to the rate of change of the specular reflection interference. When the rate of change is greater than the preset rate threshold, it is adjusted immediately; when it is not greater than the preset rate threshold, it is adjusted gradually according to the preset smoothing coefficient.

[0044] By adopting the above technical solution, the system can respond instantly to sudden disturbances and smoothly transition to gradual disturbances, taking into account both the response speed of compensation and the visual stability of the display.

[0045] Optionally, if the visibility of the target area after smoothing is still lower than the preset visibility threshold, a degradation strategy is executed. The degradation strategy includes outputting prompts to guide the adjustment of the mirror display orientation and reducing the information density of non-critical content.

[0046] By adopting the above technical solutions, a downgrade strategy is used as a fallback when compensation and migration are insufficient, guiding the adjustment of orientation or reducing the density of non-critical content, so as to avoid critical information becoming completely unreadable under extreme glare.

[0047] Optionally, while implementing the degradation strategy, local contrast enhancement can be performed on key display content.

[0048] By adopting the above technical solution, the contrast of key content is locally enhanced while downgrading, thereby further improving the recognizability of key information under strong reflective conditions.

[0049] Optionally, the compensation for the display area can be refined to the pixel level.

[0050] By adopting the above technical solution, the partition compensation is refined to the pixel level, achieving more precise pixel-by-pixel interference compensation.

[0051] In summary, this application includes at least one of the following beneficial technical effects: 1. By stacking an integrated silver substrate, a funnel-shaped opening structure, a light-shielding layer, and a PCBA circuit board sequentially along the light-emitting direction, the coexistence of specular reflection and high-definition display is achieved on the same substrate. The amount of specular reflection interference falling on each area of ​​the display area is used as the basis for adjusting the light emission parameters in each area, so that the interference of specular reflection light on the display content can be compensated in a targeted manner.

[0052] 2. By using the aperture wall reflective layer and the aperture wall slope differentiated according to location, the light output is enhanced and directed. By using retro-reflection negative feedback and feedforward pre-subtraction, the self-excitation of compensation unique to the mirror screen is suppressed and the hysteresis is reduced, so that the compensation amount can be stabilized and the response speed is improved.

[0053] 3. By migrating key display content to areas with lower reflectivity when compensation is insufficient, and allocating it within a limited compensation power according to the importance of the main menu content, the readability of key information is ensured without increasing the luminous power, thus improving environmental adaptability under complex lighting conditions. Attached Figure Description

[0054] Figure 1 A cross-sectional view of the layered structure of a mirror display screen provided in an embodiment of this application; Figure 2 A partially enlarged schematic diagram of a single funnel-shaped opening provided in an embodiment of this application; Figure 3 This is a schematic diagram showing the correspondence between the three display areas, the aperture group, and the compensation zone provided in the embodiments of this application. Figure 4 A flowchart illustrating the adaptive light emission control method for a mirror display screen provided in an embodiment of this application; Figure 5This is a structural block diagram of a computer device provided in an embodiment of this application.

[0055] Explanation of reference numerals in the attached figures: 100. Integrated silver substrate; 110. Transparent substrate; 120. Semi-transparent black layer; 130. Black ink layer; 200. Funnel-shaped opening structure; 210. Opening; 211. Hole wall; 220. Hole wall reflective layer; 300. Light-shielding layer; 400. PCBA circuit board; 410. Light-emitting unit; 420. Flexible circuit board; 421. Grounding pin; 500. Display area. Detailed Implementation

[0056] The present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the scope of the application.

[0057] This application provides a mirror display screen and its adaptive light emission control method. A mirror display screen is a display device that appears as a mirror surface when not emitting light, and displays content through the mirror surface when emitting light. It can be applied to the control panels of home appliances such as microwave ovens and ovens, achieving a seamless black effect where the panel is a single mirror surface when the screen is off, and displays temperature and setting information when the screen is on. The integrated silver substrate is a substrate with both mirror reflection and light transmission characteristics. The funnel-shaped opening structure is a structure located on the light-emitting side of the light-emitting unit, with each opening tapering into a funnel shape. The light-shielding layer is a structure filled between adjacent openings to block lateral light crosstalk.

[0058] Taking a microwave oven panel as an example, the display area 500 is horizontally divided into three sections: the temperature digital display on the left, the segmented scale bar in the middle, and the capacitive touch control area on the right. For ease of description, these three will be referred to as Section 1, Section 2, and Section 3, respectively. The operator typically observes the panel directly in front of it, and ambient light from the ceiling light or windows often shines obliquely into the panel from above, causing different sections to exhibit varying degrees of specular reflection. The following section, using this scenario as an example, will explain in detail the structure of the mirror display screen and how to determine the amount of specular reflection interference in each section and accordingly compensate for luminous emission.

[0059] like Figure 1As shown, the mirror display screen provided in this embodiment includes an integrated silver substrate 100, a PCBA circuit board 400, a funnel-shaped opening structure 200, and a light-shielding layer 300. The integrated silver substrate exhibits mirror reflection in a non-light-emitting state and transmits the display content in a light-emitting state. The PCBA circuit board has light-emitting units 410. The funnel-shaped opening structure is disposed on the light-emitting side of the light-emitting unit, with each opening 210 on the funnel-shaped opening structure aligned with the light-emitting unit, directing the light emitted by the light-emitting unit to the integrated silver substrate. The light-shielding layer is located between the openings to suppress light crosstalk between adjacent light-emitting areas. Along the light-emitting direction of the light-emitting unit, the PCBA circuit board, the funnel-shaped opening structure, and the integrated silver substrate are stacked sequentially.

[0060] One way to achieve both mirror and transparent properties on an integrated silver substrate is to screen-print a semi-transparent black layer 120 on the back of a light-transmitting ultra-white glass substrate 110. The transmittance of the semi-transparent black layer is approximately 6%. When the light-emitting units are off, ambient light is reflected by the semi-transparent black layer, making the entire panel appear mirror-like. When the light-emitting units are on, light passes through the semi-transparent black layer and shines through the mirror to form the displayed content. As another method, a semi-transparent reflective film can also be deposited on the surface of the light-transmitting substrate, which can also achieve the purpose of a mirror-like appearance when the screen is off and a transparent appearance when the screen is on.

[0061] Light emitted from the light-emitting unit enters the funnel-shaped opening opposite it, and is constrained and directionally guided towards the integrated silver substrate along the narrowing direction of the funnel-shaped opening wall. For example, multiple light-emitting units are arranged horizontally on a PCBA circuit board, with a spacing of 2mm between adjacent units. The inlet diameter of the funnel-shaped opening is 1.2mm, the outlet diameter is 0.6mm, and the opening depth is 1mm. After the light passes through the narrowing of the opening wall, it is directed towards the integrated silver substrate with a smaller divergence angle. Through directional guidance, the light from the light-emitting unit is concentrated and guided towards the operator's observation direction, reducing lateral dispersion loss when the light passes through the integrated silver substrate, making the displayed content brighter and the mirror area cleaner. The light-shielding layer located between adjacent openings separates each opening laterally, preventing the light from one light-emitting unit from obliquely entering adjacent openings and forming stray bright areas on the mirror surface.

[0062] In some embodiments, such as Figure 2As shown, a reflective layer 220 is provided on the hole wall 211 of each opening 210. The reflective layer 220 covers the inner surface of the funnel-shaped hole wall 211, reflecting and converging the light that enters the opening and is incident on the hole wall towards the integral silver substrate, so that the light that would otherwise be absorbed by the hole wall or scattered laterally can re-participate in the light emission. For example, for an opening with a light emission diameter of 0.6 mm, after setting the hole wall reflective layer, the light emission efficiency of the opening is improved compared to when there is no reflective layer, and more light is concentrated towards the operator's side. The light-shielding layer continuously fills between adjacent openings and extends to the outer edge of the hole wall reflective layer 220. In conjunction with the reflective layer 220, on the one hand, the reflective layer 220 confines the light entering the opening to the opening and converges it forward, and on the other hand, the light-shielding layer blocks the lateral light leakage between adjacent openings, thereby synergistically suppressing light crosstalk between adjacent light-emitting areas.

[0063] In some embodiments, the slope of the hole wall of each opening is set differently according to the specular reflection intensity of each opening location. The slope of the hole wall of the opening in the location with higher specular reflection intensity is greater than that of the opening in the location with lower specular reflection intensity. Continuing with the aforementioned scenario, ambient light enters obliquely from above the panel. Location 2, which is directly facing the light source, has higher specular reflection intensity, while locations 1 and 3, which are relatively far from the light source, have lower specular reflection intensity. For location 2, which has higher specular reflection intensity, the opening adopts a larger hole wall slope, for example, an angle of 30 degrees between the hole wall and the substrate normal, so that the light is concentrated towards the operator with a higher degree of convergence, and stronger directional light emission counteracts the strong specular reflection. For locations 1 and 3, which have lower specular reflection intensity, the opening adopts a smaller hole wall slope, for example, an angle of 15 degrees, and the relatively diffused light emission is sufficient to meet visibility. The slope is set according to the difference in specular reflection intensity because areas with stronger reflection require stronger directional light output to maintain the readability of the displayed content on the specular reflection background. Over-converging light output to areas with weak reflection is unnecessary and would increase the difficulty of hole wall processing.

[0064] In some embodiments, such as Figure 3 As shown, the openings in the funnel-shaped opening structure are divided into multiple opening groups according to their location. Continuing with the aforementioned three-area scenario, the openings in areas 1, 2, and 3 are each grouped into an opening group: the temperature digital tube area opening group, the scale bar area opening group, and the touch key area opening group. The hole wall slope and hole density of each opening within each group are uniformly configured according to the specular reflection intensity of the area where the opening group is located. For example, the openings in the highly reflective scale bar area opening group uniformly adopt a 30-degree hole wall slope and a high hole density, while the openings in the less reflective temperature digital tube area opening group uniformly adopt a 15-degree hole wall slope and a lower hole density.

[0065] Each group of openings corresponds to a compensation zone whose light-emitting parameters can be independently adjusted. Specifically, the opening group in the scale bar area corresponds to compensation zone 2, the opening group in the temperature digital tube area corresponds to compensation zone 1, and the opening group in the touch key area corresponds to compensation zone 3. In this way, when driving the light-emitting units, the PCBA circuit board can independently adjust the light-emitting parameters of the light-emitting units within each zone, on a compensation zone basis. The structural opening groupings and control compensation zones are mapped one-to-one, ensuring that subsequent zone compensation based on the amount of specular reflection interference in each area falls on the corresponding group of light-emitting units. The structural partitioning provides the physical basis for zone compensation. Alternatively, when the reflective intensity within the display area changes continuously rather than clearly partitioned, the openings can be divided into several groups based on reflective intensity levels rather than functional areas. Each intensity level corresponds to a compensation zone, similarly achieving the correspondence between opening groups and compensation zones.

[0066] In some embodiments, the integrated silver substrate uses ultra-white glass as the light-transmitting substrate and undergoes chemical tempering treatment, resulting in a surface hardness greater than 6H. Ultra-white glass has a low iron content, resulting in minimal color distortion of the transmitted display light, making the transmitted numbers and scale colors closer to the original color of the light-emitting unit; chemical tempering forms a compressive stress layer on the glass surface, improving the scratch resistance of the substrate surface and adapting to the frequent touching and cleaning conditions of home appliance panels.

[0067] In some embodiments, the back of the integrated silver substrate is provided with a semi-transparent black silkscreen layer and an overlaid black silkscreen ink layer 130. The transmittance of the semi-transparent black layer is approximately 6%. A transmittance of approximately 6% means that only about 6% of light can pass through the semi-transparent black layer. When the screen is off, the backlight units, funnel-shaped openings, and other structures are difficult to see from the outside due to the low transmittance, resulting in a pure mirror-like panel. When the screen is on, the light-emitting units are driven with sufficient brightness, and the approximately 6% transmittance of light still allows for clear visibility of the displayed content. The transmittance value needs to be balanced between the mirror-like appearance and the display brightness. If the transmittance is too high, the back structure will be faintly visible when the screen is off, reducing the mirror-like appearance; if the transmittance is too low, the display will be too dim when the screen is on, requiring higher luminous power. Approximately 6% is a value that balances both.

[0068] In some embodiments, the thickness and wall slope of the funnel-shaped aperture structure are configured within a pre-selected range. The thickness of the funnel-shaped aperture structure, i.e., the depth of each aperture, determines the convergence path of light within the aperture; the wall slope, i.e., the inclination of the aperture wall relative to the substrate normal, determines the convergence degree of the emitted light, and together with the thickness and the entrance aperture diameter, determines the exit aperture diameter. Both are preferably selected within a pre-selected range according to the requirements of light emission efficiency and crosstalk suppression. For example, the thickness is 0.8 mm to 1.2 mm, and the wall slope is within a certain angle range, so that the emitted light can be concentrated towards the operator without light leakage between adjacent apertures due to an excessively large exit aperture.

[0069] In some embodiments, the temperature display, segmented scale bar, and capacitive touch keys are integrated on the same PCBA circuit board, located in the temperature display area, scale bar area, and touch key area of ​​the display area, respectively, and led out to the main board of the entire device via the flexible circuit board 420. The flexible circuit board 420 has a ground pin 421 for connecting the ground of the PCBA circuit board to the ground of the entire device, suppressing electrical interference between the touch and display functions. Thus, the display and touch functions are integrated on the same circuit board and uniformly led out via the flexible circuit board, simplifying the assembly of the mirror display screen and the entire device.

[0070] The following is combined with Figure 4 An adaptive light emission control method for a mirror display screen is described. The method includes steps S1 and S2.

[0071] S1. Determine the specular reflection interference amount for each location within the display area. Specular reflection interference amount refers to the light intensity that interferes with the visibility of the displayed content in the location after ambient light is reflected by the integrated silver substrate and superimposed on the viewing side. Continuing with the previous scenario, the ambient light shines obliquely from above. Location 2, directly facing the light source, has a larger specular reflection interference amount, while locations 1 and 3, which are farther from the light source, have smaller specular reflection interference amounts. For example, expressed as interference amounts normalized to 0 to 1, the specular reflection interference amount for location 2 is 0.8, for location 1 it is 0.3, and for location 3 it is 0.4.

[0072] S2. Based on the amount of specular reflection interference in each zone, the luminous emission parameters are adjusted for each display zone to compensate for the impact of specular reflection interference on the visibility of the displayed content. The luminous emission parameters include parameters such as the brightness of the light-emitting units. For zones with high specular reflection interference, the brightness of the light-emitting units in the corresponding compensation zone is increased; for zones with low interference, a lower brightness is maintained. Continuing the previous example, zone 2, with the highest interference of 0.8, receives the strongest luminous emission boost, while zone 1, with the lowest interference of 0.3, receives only a slight boost. The adjustment is based on the amount of specular reflection interference in each zone, rather than the overall ambient illuminance, because the specular reflection intensity varies across different zones of the panel under the same ambient illuminance. Simply increasing the brightness uniformly based on the overall illuminance cannot accurately compensate for zones with strong reflections and will over-brighten zones with weak reflections, increasing energy consumption and weakening the specular effect. Compensating for interference in each zone ensures that the light emitted from each zone precisely cancels out the specular reflection interference in its respective zone, maintaining visibility while controlling overall energy consumption.

[0073] In some embodiments, S2 further includes suppressing interference caused by the reflection of display light back through the mirror of the integrated silver substrate. After compensating for increased luminous intensity in a certain area, a portion of the display light emitted from the brightened area will be reflected again by the mirror of the integrated silver substrate and reflected back to adjacent areas, superimposing as additional interference in the adjacent areas, called the backlight interference component. If left untreated, the adjacent areas will exhibit increased interference due to this additional interference, thus further increasing luminous intensity. The increased luminous intensity then produces even stronger backlight, and this cycle may lead to a continuous increase or even divergence in the compensation amount.

[0074] Therefore, when adjusting the light emission parameters, the back-reflection interference component of the displayed light reflected back to adjacent areas via the integrated silver substrate mirror is determined, and this back-reflection interference component is subtracted from the adjustment amount of the light emission parameters as negative feedback. For example, if the back-reflection interference component reflected back to area 1 after area 2 is brightened is normalized to 0.1, then when calculating the compensation amount for area 1, the portion corresponding to this back-reflection component is subtracted from the adjustment amount obtained for area 1 based on its own interference amount of 0.3, so that area 1 is not over-brightened due to the back-reflection from area 2. Each round of adjustment subtracts the back-reflection introduced by the previous round of brightening as negative feedback, and the compensation amount converges to a stable value after several rounds, rather than continuously increasing. Thus, the negative feedback subtraction of the back-reflection interference component avoids overcompensation and self-excitation under the unique back-reflection loop of the mirror screen, making the compensation amount of each area converge stably.

[0075] In some embodiments, before determining the backlight interference component, a feedforward component of the backlight interference component is estimated in advance based on the predetermined luminance value of the content to be displayed. Since the content to be displayed in each location and its predetermined luminance brightness are known before driving, the approximate amount of backlight that this luminance will reflect back to adjacent locations can be estimated in advance from the predetermined luminance value, serving as the feedforward component. When adjusting the luminance parameters, the feedforward component is subtracted first, and then negative feedback is used to correct the residual backlight remaining after subtracting the feedforward component. For example, the feedforward backlight component corresponding to the predetermined brightening of location 2 is estimated to be 0.08. After subtracting it first, the residual backlight between the actual backlight and the estimate is only 0.02, and this small amount can then be subtracted by negative feedback. Compared to relying solely on negative feedback to observe and subtract backlight round by round, feedforward pre-subtraction eliminates the main part of the backlight in the current round of luminance adjustment, reducing the lag caused by the round-by-round approximation of negative feedback, and allowing compensation to reach stability more quickly.

[0076] In some embodiments, when the visibility still fails to meet requirements after compensating for increased luminous parameters in a certain area, the key display content of that area is moved to an area with weaker reflectivity. Specifically, in response to the fact that the adjustment of luminous parameters after deducting backlight interference still results in the visibility of the target area in the display area being lower than a preset visibility threshold, the key display content of the target area is moved to an area with lower specular reflection interference than the target area. Continuing with the aforementioned scenario, when the visibility of area 2 is still lower than the preset visibility threshold even though the luminous brightness has been increased to the upper limit due to a high interference level of 0.8, the key content originally displayed in area 2, such as the current heating temperature, is moved to area 1, where the specular reflection interference is only 0.3. In this way, when there is no room for further improvement in luminous brightness, the key information appears in a position with weaker reflectivity and easier visibility by rearranging the content between areas, thus breaking through the upper limit of visibility simply by increasing brightness.

[0077] In some embodiments, after the key display content is migrated, the importance level of each display content is determined based on the main control menu status of the mirror display screen, and compensation power is allocated to each display content within a preset compensation power budget according to its importance level. The compensation power budget refers to the upper limit of the total power allocated for compensation and brightness enhancement, which is limited by power supply and heat generation. The main control menu status reflects the current working mode, and the importance of each display content varies in different modes. Continuing with the aforementioned scenario, when the microwave oven is in heating mode, the current heating temperature is the most critical to the operator, with the highest importance level, followed by the remaining time, and the mode icon has the lowest importance. Therefore, within the compensation power budget, compensation power is first allocated to the heating temperature to ensure sufficient brightness enhancement, and then allocated to the remaining time in turn. When the budget is insufficient, the mode icon receives only a small amount or no additional brightness enhancement. For example, about 60% of the compensation power budget is allocated to the heating temperature, about 30% to the remaining time, and about 10% to the mode icon, so that the limited compensation power is concentrated on ensuring the readability of key information.

[0078] In some embodiments, each opening of the funnel-shaped aperture structure has a sloped hole wall, and the amount of specular reflection interference at each location can be determined based on the light emission direction corresponding to the sloped hole wall. The sloped hole wall determines the direction in which the light from the light-emitting unit is emitted after being constrained by the hole wall, i.e., the light emission direction; the light emission direction, together with the mirror of the integral silver substrate, determines the angular relationship between the incident ambient light at the location and the mirror reflection to the observation side, i.e., the specular reflection geometry.

[0079] Specifically, S1 includes: determining the specular reflection geometry of each area in the display area based on the light emission direction corresponding to the slope of the aperture wall of each opening, and determining the specular reflection interference amount of each area based on the specular reflection geometry of each area. Continuing with the aforementioned scenario, the aperture wall slope of area 2 is 30 degrees. From this slope, the light emission direction of area 2 and the corresponding specular reflection geometry can be calculated. Then, combined with the ambient light shining obliquely from above, it is determined that there is relatively strong ambient light reflected to the operator's observation direction, corresponding to a larger specular reflection interference amount for area 2. The aperture wall slope of area 1 is 15 degrees. Based on the corresponding geometry, it is determined that the ambient light reflected to the observation direction is relatively weak, corresponding to a smaller specular reflection interference amount for area 1.

[0080] Since the aperture wall slope is a structural parameter determined during manufacturing, the interference amount can be estimated by inferring the specular reflection geometry using the aperture wall slope. This eliminates the need for additional optical path detection devices on the panel to obtain the specular reflection interference amount for each location, making the structural parameter itself the basis for interference estimation. Alternatively, without relying on structural priors, light intensity sensors can be placed near each location in the display area to directly measure the specular reflection light intensity at each location, achieving the same goal of determining the specular reflection interference amount for each location.

[0081] In some embodiments, the amount of specular reflection interference in each area is weighted based on the preset installation posture and preset viewing position of the mirror display. Since the installation posture of the appliance panel is fixed and the operator's viewing position is also roughly fixed, different areas contribute differently to the reflection direction relative to the operator's main line of sight. Based on this, a weighting coefficient is preset for each area, giving greater weight to the specular reflection interference in areas with stronger reflection from the main viewing angle, thus concentrating compensation resources more on the areas where the operator is most likely to experience reflection interference.

[0082] In some embodiments, the difference in polarization state between specularly reflected light and display light is utilized to distinguish specular reflection interference from the mixed light. The ambient light reflected by the integrated silver substrate and the display light emitted by the light-emitting unit typically differ in polarization state. By collecting and separating these two sources according to their polarization states using polarization elements, the component belonging to specular reflection can be extracted from the superimposed mixed light. Thus, the contribution of the display light itself is excluded when determining the amount of specular reflection interference, making the interference estimate closer to the true specular reflection intensity and improving estimation accuracy.

[0083] In some embodiments, when residuals still exist in polarization differentiation, reflective areas are located through camera image analysis and cross-validated with the polarization differentiation results. A camera facing the operator captures images, and the bright areas in the image are used to locate locations with strong reflections. The location results are compared with the reflective areas obtained from polarization differentiation to correct the residuals in polarization differentiation using image evidence, further improving the accuracy of reflective area location.

[0084] In some embodiments, the ambient light trend for subsequent periods is predicted based on the geographical location of the mirror display, the current time, and historical usage data, and pre-compensation is performed accordingly. Ambient light changes regularly with time and weather. The approximate direction of sunlight can be inferred from the geographical location and the current time. By combining the ambient light records for the same period in historical usage data, the changing trend of ambient light in various locations over a subsequent period can be predicted, allowing for advance adjustment of luminous parameters rather than passively responding after ambient light changes. Weather forecast data can also be integrated during prediction. When the forecast indicates a significant change in ambient light, such as a change from sunny to cloudy, the prediction is corrected accordingly, making the pre-compensation more consistent with actual lighting conditions.

[0085] In some embodiments, when prediction deviations accumulate, the prediction model is corrected online based on historical data on specular reflection interference and compensation effects. During operation, the predicted ambient light and actual specular reflection interference, as well as the compensated visibility effect, are recorded for each time period. When the deviation between the predicted and actual values ​​continues to accumulate beyond a certain range, the parameters of the prediction model are adjusted online based on this historical data, so that the prediction gradually conforms to reality as the usage scenario changes.

[0086] In some embodiments, the adjustment amount of the luminescence parameters is processed in different modes according to the rate of change of specular reflection interference. When the rate of change of specular reflection interference is greater than a preset rate threshold, such as when an operator opens a door causing a sudden change in ambient light, the luminescence parameters are adjusted immediately to quickly follow. When the rate of change is not greater than the preset rate threshold, such as when sunlight changes slowly over time, the adjustment amount is gradually processed according to a preset smoothing coefficient to avoid frequent small jumps in luminescence brightness that cause flickering. This balances the response speed to sudden interference with visual stability against slowly changing interference.

[0087] In some embodiments, when the visibility of the target area after smoothing is still below a preset visibility threshold, a degradation strategy is executed. The degradation strategy includes outputting prompts guiding the operator to adjust the orientation of the mirrored display, prompting the operator to change the angle of the panel or themselves relative to the ambient light source to reduce glare; and reducing the information density of non-critical content, such as hiding secondary icons and retaining only key numbers, so that key information remains identifiable under strong glare. In addition to the above two methods, the degradation strategy can also employ other fallback methods such as switching to a simplified display layout with high contrast to cope with extreme glare conditions where compensation and relocation cannot meet visibility requirements.

[0088] In some embodiments, while implementing a degradation strategy, local contrast enhancement is performed on key display content. When strong reflections cause a decrease in overall visibility, the contrast between the local area containing the key content and the background is increased. For example, the strokes of key numbers are deepened or the surrounding area is darkened, making the key information stand out more against the bright, specularly reflected background, thereby further improving the recognizability of key information under strong reflections.

[0089] In some embodiments, the zonal compensation of the display area is further refined to pixel-level compensation. Based on adjusting the light emission parameters according to the compensation zones, the specular reflection interference of each pixel is further determined and compensated independently on a per-pixel or smaller light emission unit basis. This is a finer compensation granularity than the compensation zones, enabling the compensation to conform to a more refined distribution of reflective intensity within the display area.

[0090] This application also provides a computer device, as described in the embodiments. Figure 5 The computer device includes a processor, internal memory, a network interface, and a non-volatile storage medium connected via a system bus. The non-volatile storage medium stores the operating system, computer programs, and a database. The processor provides computing and control capabilities, the network interface is used for communication with external devices, and the computer program, when executed by the processor, implements the aforementioned adaptive light emission control method for the mirror display screen.

[0091] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described adaptive light emission control method for a mirror display screen.

[0092] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0093] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A mirror display screen, characterized in that, include: An integrated silver substrate, wherein the integrated silver substrate is configured to exhibit mirror reflection in a non-light-emitting state and to transmit display content in a light-emitting state; PCBA circuit board, wherein the PCBA circuit board is provided with a light-emitting unit; A funnel-shaped opening structure is provided on the light-emitting side of the light-emitting unit. Each opening on the funnel-shaped opening structure is aligned with the light-emitting unit and configured to directionally guide the light emitted by the light-emitting unit to the integral silver substrate. A light-shielding layer, located between the openings, is configured to suppress light crosstalk between adjacent light-emitting areas; In this configuration, along the light emission direction of the light-emitting unit, the PCBA circuit board, the funnel-shaped opening structure, and the integrated silver substrate are stacked sequentially.

2. The mirror display screen according to claim 1, characterized in that, A reflective layer is provided on the wall of each opening, and the reflective layer is configured to converge the light emitted by the light-emitting unit toward the integral silver substrate; the light-shielding layer is continuously filled between each opening and is configured to work with the reflective layer to suppress light crosstalk between adjacent light-emitting areas.

3. The mirror display screen according to claim 2, characterized in that, The slope of the hole wall of each opening is set differently according to the specular reflection intensity of the area where each opening is located, wherein the slope of the hole wall of the opening in the area with higher specular reflection intensity is greater than the slope of the hole wall of the opening in the area with lower specular reflection intensity.

4. The mirror display screen according to claim 3, characterized in that, The funnel-shaped opening structure is divided into multiple opening groups according to its location. The slope of the hole wall and the hole distribution density of each opening in each opening group are uniformly configured according to the specular reflection intensity of the area where the opening group is located. Each opening group corresponds to a compensation zone whose light emission parameters can be adjusted independently.

5. An adaptive light emission control method for a mirror display screen, the mirror display screen comprising an integral silver substrate, a PCBA circuit board with light-emitting units, a funnel-shaped opening structure located on the light-emitting side of the light-emitting units, and a light-shielding layer for suppressing light crosstalk, characterized in that, The method includes: S1. Determine the amount of specular reflection interference falling on each location in the display area of ​​the mirror display screen; S2. Based on the amount of specular reflection interference in each area, adjust the light emission parameters of the display area in each zone to compensate for the impact of the amount of specular reflection interference on the visibility of the displayed content.

6. The adaptive light emission control method for a mirror display screen according to claim 5, characterized in that, S2 includes: when adjusting the light emission parameters, determining the back-reflection interference component of the display light reflected back to the adjacent area through the mirror of the integrated silver substrate, and subtracting the back-reflection interference component as negative feedback from the adjustment amount of the light emission parameters.

7. The adaptive light emission control method for a mirror display screen according to claim 6, characterized in that, Before determining the backlight interference component, the feedforward component of the backlight interference component is estimated in advance based on the predetermined emission value of the content to be displayed. When adjusting the emission parameters, the feedforward component is first deducted, and then the residual backlight after deducting the feedforward component is corrected by the negative feedback.

8. The adaptive light emission control method for a mirror display screen according to claim 6, characterized in that, If the adjustment of the luminescence parameter after deducting the retroreflection interference component still results in the visibility of the target location in the display area being lower than a preset visibility threshold, the key display content of the target location is moved to a location where the specular reflection interference is lower than that of the target location for display.

9. The adaptive light emission control method for a mirror display screen according to claim 8, characterized in that, After the key display content is migrated, the importance level of each display content is determined according to the main control menu status of the mirror display screen, and compensation power is allocated to each display content within a preset compensation power budget according to the importance level.

10. The adaptive light emission control method for a mirror display screen according to claim 5, characterized in that, Each opening in the funnel-shaped opening structure has a wall slope. S1 includes: determining the specular reflection geometry of each area in the display area based on the light emission direction corresponding to the wall slope of each opening, and determining the specular reflection interference amount of each area according to the specular reflection geometry of each area.

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