Display system and cooking appliance
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-21
Smart Images
Figure CN224536667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optoelectronic display technology, and more specifically, to a display system and a cooking appliance. Background Technology
[0002] In matrix LED (Light Emitting Diode) display technology, when LEDs are integrated into a specific structure, such as a digital display screen or indicator array, the brightness of all LEDs is controlled by a uniform scan time and current. However, due to structural design requirements, LEDs may be placed at different distances from the light-transmitting surface, resulting in visual differences in brightness between the individual LEDs.
[0003] To address these issues, related technologies rely on hardware design, such as adjusting the position of LEDs, changing their physical dimensions, or using resistors to adjust the brightness of different LEDs, so that multiple LEDs appear to have the same brightness. However, these methods are costly.
[0004] There is currently no effective solution to the problem of uneven display brightness caused by using the same brightness parameter to control the brightness of multiple display units when they are at different distances from the light-transmitting surface in related technologies. Utility Model Content
[0005] This invention provides a display system and a cooking appliance to solve the problem in related technologies where uneven display brightness is caused by using the same brightness parameter to control the brightness of multiple display units at different distances from the light-transmitting surface.
[0006] According to one aspect of this utility model, a display system is provided. The display system includes: a display panel, comprising a display unit array and an arc-shaped display surface above the display unit array; the display units in the display unit array have identical specifications, but their display distances differ, the display distance being the distance between the top of the display unit and the arc-shaped display surface; a memory storing brightness parameters of the display unit array, wherein the brightness parameters of different display units are positively correlated with their display distance; and a controller connected to the memory and the display panel, used to read the brightness parameters and illuminate the display units in the display unit array. This solves the problem in related technologies where the brightness of multiple display units varies from their distances to the light-transmitting surface, leading to uneven display brightness when the same brightness parameters are used to control the brightness of multiple display units. By illuminating the display units in the display unit array according to the brightness parameters, and since the brightness parameters of different display units are positively correlated with their display distance, the brightness differences caused by different display distances are compensated for, thus achieving uniform display brightness even when multiple display units have different distances from the light-transmitting surface and are of identical specifications.
[0007] Optionally, the display panel further includes: multiple first display control interfaces connected to the controller, each first display control interface connected to a row of display units in the display unit array; and multiple second display control interfaces connected to the controller, each second display control interface connected to a column of display units in the display unit array. By interacting with the multiple first and second display control interfaces on the display panel, the controller can control the rows and columns of the display unit array, thereby independently or uniformly adjusting the brightness of each display unit. This effectively solves the problem of uneven brightness caused by the curved display surface of the structural design, improving the performance of the display system and the user experience.
[0008] Optionally, the brightness parameters include the scan times of multiple first display control interfaces and multiple second display control interfaces. The scan time of each first display control interface determines the illumination time of a row of display units, and the scan time of each second display control interface determines the illumination time of a column of display units. By combining the use of multiple first and second display control interfaces to control the brightness of the display unit array, and because the scan time adjustment can adapt to different distances between the display units and the curved display surface, regardless of the curvature of the display panel, precise brightness adjustment can be performed on each row and column of the display panel by controlling the scan times of the first and second display control interfaces. This ensures that even in complex structural designs, each display unit on the panel presents a consistent brightness visually. This not only solves the problem of uneven brightness caused by the special design structure of the display panel (such as a curved design) but also avoids the complexity and cost of hardware modifications.
[0009] Optionally, the curved display surface has curvature in the X-direction but not in the Y-direction. The display distances of display units in different rows of the display unit array are different, while the display distances of display units in different columns of the display unit array are the same. The scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning times of multiple second display control interfaces are the same. By setting the scanning time of the first display control interface to be positively correlated with the display distance of the display units, while keeping the scanning time of the second display control interfaces constant, the display system can effectively address the problem of uneven brightness on display panels with curvature in the X-axis direction. This not only eliminates brightness differences and improves the visual effect of the panel, but also reduces control complexity because the brightness of display units in the Y-axis direction can be kept consistent through the fixed scanning time of the second display control interfaces.
[0010] Optionally, the curved display surface has no curvature in the X direction but has curvature in the Y direction. The display distances of display units in different rows of the display unit array are the same, while the display distances of display units in different columns are different. The scanning times of multiple first display control interfaces are the same, and the scanning time of each second display control interface is positively correlated with the display distance of its corresponding column of display units. By setting the scanning time of the second display control interface to be positively correlated with the display distance of the display units, while keeping the scanning time of the first display control interface constant, the display system can effectively address the problem of uneven brightness on display panels with curvature in the Y-axis direction. This not only eliminates brightness differences and improves the visual effect of the panel, but also reduces control complexity because the brightness of display units in the X-axis direction can be kept consistent through the fixed scanning time of the first display control interface.
[0011] Optionally, the curved display surface has curvature in both the X and Y directions. The display distances of display units in different rows and columns of the display unit array are different. The scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning time of each second display control interface is positively correlated with the display distance of the corresponding column of display units. By setting the scanning times of the first and second display control interfaces to be positively correlated with the display distances of the display units, the display system can effectively address the problem of uneven brightness on display panels with curvature in the X and Y directions, eliminating brightness differences and improving the visual effect of the panel.
[0012] Optionally, the display panel further includes a power supply unit and multiple power supply circuits, each power supply circuit including: a first transistor, with its emitter connected to a ground terminal, its collector connected to the negative terminal of the display unit array, and its base connected to a first display control interface, wherein the first transistor is an NPN transistor; and a second transistor, with its emitter connected to the positive terminal of the power supply unit, its collector connected to the positive terminal of the display unit array, and its base connected to a second display control interface, wherein the second transistor is a PNP transistor. The NPN and PNP transistors work in conjunction with the first and second display control interfaces respectively. When the second display control interface is low, the PNP transistor Q2 turns on; simultaneously, when the first display control interface is high, the NPN transistor Q1 turns on, thereby illuminating the display units. Compared to illuminating the display unit array through power supply from the controller, brightness adjustment is more flexible.
[0013] Optionally, each power supply circuit further includes: a first resistor connected in series between the second display control interface and the base of the second transistor; a second resistor connected in series between the first display control interface and the base of the first transistor; and a third resistor connected in series between the positive terminal of the display unit array and the base of the second transistor. By adding the first, second, and third resistors to the power supply circuit, not only is the stability and security of the circuit enhanced, but the brightness of the display unit is also controlled.
[0014] Optionally, the brightness parameters and energy conversion efficiency of different display units are inversely correlated, where energy conversion efficiency refers to the efficiency with which the display unit converts electrical energy into light energy. By setting the brightness parameters inversely to the energy conversion efficiency, the display system ensures visual consistency and high-quality image display. This not only significantly reduces brightness differences caused by uneven energy conversion efficiency of display units, allowing users to experience a more uniform and delicate display effect, but also reduces the overall energy consumption of the display system and extends its lifespan by precisely controlling the current consumption of each display unit.
[0015] According to another aspect of the present invention, a cooking appliance is provided. The appliance includes: a pot body, a lid, and a display system. Attached Figure Description
[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0017] Figure 1 This is a schematic diagram of a display system according to an embodiment of the present utility model;
[0018] Figure 2 This is a schematic diagram of a display unit array in a display system according to an embodiment of the present utility model;
[0019] Figure 3 This is a schematic diagram of the power supply circuit in the display system according to an embodiment of the present utility model. Detailed Implementation
[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.
[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0023] According to an embodiment of the present invention, a display system is provided.
[0024] Figure 1 This is a schematic diagram of a display system according to an embodiment of the present utility model. Figure 1 As shown, the display system includes the following components:
[0025] The display panel 101 includes a display unit array and an arc-shaped display surface above the display unit array. The display units in the display unit array have the same specifications, but the display distances of the display units in the display unit array are different. The display distance is the distance between the top of the display unit and the arc-shaped display surface.
[0026] The display panel 101 is a component used for visual presentation. For example, in a household appliance, the display panel 101 can be used to display the operating parameters of the household appliance. For example, in a rice cooker, the display panel 101 is set on the lid and can display the cooking function, the remaining cooking time, the temperature inside the pot, the pressure, etc.
[0027] The display units can be LEDs, and the display unit array can be an LED array composed of multiple LEDs arranged in an array. Each display unit in the display unit array has the same specifications, meaning that their physical dimensions (e.g., height) are identical. It should be noted that because the display panel 101 is designed with a curved display surface—that is, the surface of the display panel 101 is not flat but has a certain curvature—the distance (display distance) between different display units in the display unit array and the curved display surface varies, even when the display units in the display unit array are located on the same plane.
[0028] For example, the difference in display distance refers to the difference in brightness between the display unit at the front (closest to the curved display surface) and the display unit at the back (farthest from the curved display surface) when light passes through the curved display surface to reach the user, due to the different lengths of the light path. This difference is more pronounced when the curved design is more significant or the viewing angle is larger.
[0029] The memory 102 stores the brightness parameters of the display unit array, wherein the brightness parameters of different display units are positively correlated with the display distance.
[0030] The memory 102 is a data storage component in the display system, used to store the brightness parameters of the display unit array. These brightness parameters can be reused even after a system restart, thus enabling brightness adjustment of the display panel 101. The brightness parameters are specific values controlling the brightness of the display units in the display unit array. They are positively correlated with the display distance of the display units; that is, the farther a display unit is from the curved display surface, the higher its brightness parameter is set to compensate for the brightness attenuation caused by the increased display distance.
[0031] For example, the current required per unit time for each display unit to achieve consistent brightness is pre-calculated, then converted into a lighting time, and used as the brightness parameter of the display unit array. For example, when the display unit array lights up row display units through multiple first display control interfaces and column display units through multiple second display control interfaces, the scan times of the multiple first display control interfaces and the scan times of the multiple second display control interfaces can be used as the brightness parameter of the display unit array.
[0032] The controller 103, connected to the memory 102 and the display panel 101, is used to read brightness parameters and illuminate the display units in the display unit array.
[0033] The controller 103 is the central hub of the entire display system, connected to the memory 102 and the display panel 101 (electrical or communication connection). It reads brightness parameters from the memory 102 and then controls the lighting time of the display units in the display unit array based on these parameters. This allows display units farther from the curved display surface to have a longer lighting time, resulting in more current flowing per unit time and higher brightness. Conversely, display units closer to the curved display surface have a shorter lighting time, resulting in less current flowing per unit time and lower brightness. This ensures uniform brightness regardless of the distance between the display units and the curved display surface, optimizing the viewing experience of the display panel 101.
[0034] The display system provided in this embodiment includes a display panel 101 comprising a display unit array and an arc-shaped display surface above the display unit array. The display units in the display unit array have identical specifications, but their display distances differ. The display distance is the distance between the top of the display unit and the arc-shaped display surface. A memory 102 stores brightness parameters of the display unit array, wherein the brightness parameters of different display units are positively correlated with their display distance. A controller 103, connected to the memory 102 and the display panel 101, is used to read the brightness parameters and illuminate the display units in the display unit array. This solves the problem in related technologies where the use of the same brightness parameters to control the brightness of multiple display units, due to their varying distances from the light-transmitting surface, leads to uneven display brightness. By illuminating the display units in the display unit array according to the brightness parameters, and because the brightness parameters of different display units are positively correlated with their display distance, the brightness differences caused by different display distances are compensated for. This achieves the effect of ensuring uniform display brightness even when multiple display units have different distances from the light-transmitting surface and are of identical specifications.
[0035] In order to efficiently control the on / off state of multiple display units in the display unit array, optionally, in the display system provided in this embodiment of the present invention, the display panel 101 further includes: multiple first display control interfaces connected to the controller 103, each first display control interface being connected to a row of display units in the display unit array; and multiple second display control interfaces connected to the controller 103, each second display control interface being connected to a column of display units in the display unit array.
[0036] Figure 2 This is a schematic diagram of a display unit array in a display system according to an embodiment of the present invention, as shown below. Figure 2As shown, the display units in the display unit array are LED lights. The display unit array is an LED light array composed of 24 LED lights. The display unit array is also connected to control components: multiple first display control interfaces and multiple second display control interfaces. These two types of control interfaces are used to control each row of LED lights and each column of LED lights in the LED light array, respectively.
[0037] The first display control interface can be a COM port (Common Mouth, row selection port). The COM port establishes an electrical connection with the controller 103, and each COM port is specifically responsible for establishing control communication with one row of display units in the display unit array. In this way, the controller 103 can independently transmit signals and adjust the brightness of each row of display units. Specifically, after the controller 103 reads the brightness parameters from the memory 102, it sends control signals to the designated row of display units through the COM port according to the brightness parameters, determining the lighting time and current intensity of each display unit in that row. The number of COM ports corresponds to the number of rows in the display unit array, such as... Figure 3 As shown, when there are 3 rows in the display cell array, the number of COM ports is 3.
[0038] The second display control interface can be a SEG (Segment) port. Similar to the first display control interface, the SEG port also establishes an electrical connection with the controller 103. Each SEG port is specifically responsible for establishing control communication with a column of display units in the display unit array. Specifically, the controller 103 first selects a COM port and activates it. Then, it iterates through all SEG ports, sequentially lighting up the display units that intersect with it. By adjusting the scan time of the COM port and the SEG port, the brightness of each display unit can be precisely controlled to adapt to the different display distances between it and the curved display surface.
[0039] In this embodiment, the controller 103 interacts with multiple first display control interfaces and multiple second display control interfaces on the display panel 101 to control the rows and columns of the display unit array, thereby independently or uniformly adjusting the brightness of each display unit. This effectively solves the problem of uneven brightness caused by the curved display surface of the structural design, and improves the performance of the display system and the user experience.
[0040] Optionally, in the display system provided in this embodiment of the present invention, the brightness parameter includes the scanning time of a plurality of first display control interfaces and the scanning time of a plurality of second display control interfaces, wherein the scanning time of each first display control interface is used to determine the lighting time of a row of display units, and the scanning time of each second display control interface is used to determine the lighting time of a column of display units.
[0041] The brightness parameter is a set of instructions used by the controller 103 to adjust the brightness of the display units. In this embodiment, the brightness parameter includes the scan time of the first display control interface and the scan time of the second display control interface. The scan time of the first display control interface refers to the duration for which the controller 103 controls the display units through the first display control interface, and the scan time of the second display control interface refers to the duration for which the controller 103 controls the display units through the second display control interface. In the display unit array, each row of display units is controlled by one first display control interface, and each column of display units is controlled by one second display control interface. By adjusting the scan time of the first and second display control interfaces, the brightness of the display unit array can be indirectly controlled.
[0042] The illumination time refers to the duration during which a display unit remains illuminated within a certain period. The controller 103 controls the scanning time of the first display control interface based on brightness parameters to ensure that each row of display units maintains visually consistent brightness. For example, for a row of display units farther from the curved display surface, the controller 103 sets the scanning time of the corresponding first display control interface to a longer value, thereby extending the illumination time of this row of display units and increasing their brightness to compensate for the natural brightness decay caused by the increased display distance. Similarly, the controller 103 also controls the scanning time of the second display control interface based on brightness parameters to ensure that each column of display units also maintains visually consistent brightness. Thus, even with different curvatures on the face panel and different display distances between the display units and the display surface, the entire display panel 101 can still present a uniform and stable brightness.
[0043] This embodiment controls the brightness of the display unit array by combining multiple first display control interfaces and multiple second display control interfaces. Since the scanning time can be adjusted to adapt to different distances between the display units and the curved display surface, regardless of how the curvature of the display panel 101 is distributed, by controlling the scanning time of the first and second display control interfaces, the brightness of each row and column of the display panel 101 can be precisely adjusted. This ensures that even in the case of complex structural design, each display unit on the panel can present a consistent brightness visually. This not only solves the problem of uneven brightness caused by the special design structure of the display panel 101 (such as curved design), but also avoids the complexity and cost of hardware modification.
[0044] Optionally, in the display system provided in this embodiment of the present invention, the arc-shaped display surface has curvature in the X direction but no curvature in the Y direction. The display distances of display units in different rows of the display unit array are different, while the display distances of display units in different columns of the display unit array are the same. The scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning time of multiple second display control interfaces is the same.
[0045] It should be noted that when a curved display surface has curvature in the X direction but maintains a straight line in the Y direction (for example, a curved display surface is a rectangular display surface with curvature from left to right), and the display units in the display unit array are located on the same plane and have the same height, the display distance between the display units in different rows of the display unit array and the curved display surface will differ. That is, the physical path length formed between the display units at different positions along the X-axis and the observer's line of sight will be different. However, the display distance of the display units in the same column will be consistent, that is, the physical path length formed between the display units at different positions along the Y-axis and the observer's line of sight will be the same.
[0046] The varying physical path lengths between the display units at different positions along the X-axis and the observer's line of sight create visual differences in brightness. To correct this difference and achieve uniform brightness output on the curved display surface, the scan time of the first display control interface is set to be positively correlated with the display distance of the corresponding row of display units. The controller 103 controls each row of display units based on the scan time of the first display control interface. Specifically, for rows farther from the curved display surface, the controller 103 controls the display units in that row using a longer scan time of the first display control interface, thus giving the display units in that row a longer illumination time to compensate for the brightness attenuation caused by the increased display distance and ensure brightness consistency.
[0047] In this case, when the physical path length between the display unit at different positions along the Y-axis and the observer's line of sight is the same, there is no visual difference in brightness. The scanning time of the second display control interface is kept consistent, and each column of display units has the same lighting time. This not only simplifies the display control logic, but also ensures the overall brightness balance of the display panel 101 in the Y direction, thus improving the display quality.
[0048] For example, the first display control interface is a COM port, and the second display control interface is a SEG port. In one optional implementation, the scan time of the SEG port can be fixed and used as the time base for the COM port. This time is divided into n equal parts. By setting the scan time ratio of the COM port, the uniform brightness adjustment of the entire COM port display unit can be achieved. For example, if the scan time of the SEG port is 1 second, the scan time of the COM port can be set to less than or equal to 1 second. In another optional implementation, the brightness of the entire row of display units can be adjusted by increasing or decreasing the scan time of the COM port, making a single COM port different from other COM ports.
[0049] In this embodiment, by setting the scanning time of the first display control interface to be positively correlated with the display distance of the display unit, while keeping the scanning time of the second display control interface unchanged, the display system can effectively deal with the problem of uneven brightness on the display panel 101 with curvature in the X-axis direction. This not only eliminates the brightness difference and improves the visual effect of the panel, but also reduces the control complexity because the brightness of the display unit in the Y-axis direction can be kept consistent by the fixed scanning time of the second display control interface.
[0050] Optionally, in the display system provided in this embodiment of the present invention, the curved display surface has no curvature in the X direction but has curvature in the Y direction. The display distance of the display units in different rows of the display unit array is the same, the display distance of the display units in different columns of the display unit array is different, the scanning time of multiple first display control interfaces is the same, and the scanning time of each second display control interface is positively correlated with the display distance of the corresponding column of display units.
[0051] It should be noted that when a curved display surface has curvature in the Y direction but maintains a straight line characteristic in the X direction (for example, a curved display surface is a rectangular display surface with curvature from top to bottom), and the display units in the display unit array are located on the same plane and have the same height, the display distance between the display units in different columns of the display unit array and the curved display surface will vary. That is, the physical path length formed between the display units at different positions along the Y axis and the observer's line of sight will be different. However, the display distance of the display units in the same row will be consistent, that is, the physical path length formed between the display units at different positions along the X axis and the observer's line of sight will be the same.
[0052] The varying physical path lengths between the display units at different positions along the Y-axis and the observer's line of sight create visual differences in brightness. To correct this difference and achieve uniform brightness output on the curved display surface, the scan time of the second display control interface is set to be positively correlated with the display distance of the corresponding column of display units. The controller 103 controls each column of display units based on the scan time of the second display control interface. Specifically, for columns farther from the curved display surface, the controller 103 uses a longer scan time of the second display control interface to control the display units in that column, thus giving the display units in that column a longer illumination time to compensate for the brightness attenuation caused by the increased display distance and ensure brightness consistency.
[0053] In this case, when the physical path length between the display unit at different positions along the X-axis and the observer's line of sight is the same, there is no visual difference in brightness. The scanning time of the first display control interface is kept consistent, and each row of display units has the same lighting time. This not only simplifies the display control logic, but also ensures the overall brightness balance of the display panel 101 in the X direction, thus improving the display quality.
[0054] In this embodiment, by setting the scanning time of the second display control interface to be positively correlated with the display distance of the display unit, while keeping the scanning time of the first display control interface unchanged, the display system can effectively deal with the problem of uneven brightness on the display panel 101 with curvature in the Y-axis direction. This not only eliminates the brightness difference and improves the visual effect of the panel, but also reduces the control complexity because the brightness of the display unit in the X-axis direction can be kept consistent by the fixed scanning time of the first display control interface.
[0055] Optionally, in the display system provided in this embodiment of the present invention, the curved display surface has curvature in both the X and Y directions, the display distance of display units in different rows of the display unit array is different, the display distance of display units in different columns of the display unit array is different, the scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning time of each second display control interface is positively correlated with the display distance of the corresponding column of display units.
[0056] It should be noted that when the curved display surface has curvature in both the Y and Y directions (for example, the curved display surface is a rectangular display surface with curvature from left to right and from top to bottom), if the display units in the display unit array are located on the same plane and have the same height, the display distance between the display units in different rows of the display unit array and the curved display surface will vary. That is, the physical path length formed between the display units at different positions along the X-axis and the observer's line of sight will be different. Similarly, the display distance between the display units in different columns of the display unit array and the curved display surface will vary. That is, the physical path length formed between the display units at different positions along the Y-axis and the observer's line of sight will be different.
[0057] The varying physical path lengths between the display units at different positions along the X-axis and the observer's line of sight create visual differences in brightness. To correct this difference and achieve uniform brightness output on the curved display surface, the scan time of the first display control interface is set to be positively correlated with the display distance of the corresponding row of display units. The controller 103 controls each row of display units based on the scan time of the first display control interface. Specifically, for rows farther from the curved display surface, the controller 103 controls the display units in that row using a longer scan time of the first display control interface, thus giving the display units in that row a longer illumination time to compensate for the brightness attenuation caused by the increased display distance and ensure brightness consistency.
[0058] The varying physical path lengths between the display units at different positions along the Y-axis and the observer's line of sight create visual differences in brightness. To correct this difference and achieve uniform brightness output on the curved display surface, the scan time of the second display control interface is set to be positively correlated with the display distance of the corresponding column of display units. The controller 103 controls each column of display units based on the scan time of the second display control interface. Specifically, for columns farther from the curved display surface, the controller 103 uses a longer scan time of the second display control interface to control the display units in that column, thus giving the display units in that column a longer illumination time to compensate for the brightness attenuation caused by the increased display distance and ensure brightness consistency.
[0059] In addition, in an optional embodiment, the scanning time of the first display control interface can be fixed, and the scanning time of different second display control interfaces can be flexibly set to achieve adjustable brightness of each display unit. For example, the first display control interface is a COM port, and the second display control interface is a SEG port. In an optional embodiment, the scanning time of the COM port is fixed and used as the time reference of the SEG port. The scanning time of the SEG port is divided into n equal parts. By setting the time ratio of each SEG port, the scanning time of different SEG ports is changed, thereby changing the brightness of each lamp to be adjustable.
[0060] In this embodiment, by setting the scanning time of the first display control interface and the second display control interface to be positively correlated with the display distance of the display unit, the display system can effectively cope with the problem of uneven brightness on the display panel 101 with curvature in the X-axis and Y-axis directions, eliminate brightness differences, and improve the visual effect of the panel.
[0061] Considering that the display unit is lit by the power supply of the controller 103 itself, the current of the controller 103 port is limited. To adjust the current for lighting the display unit more flexibly, optionally, in the display system provided in this embodiment of the present invention, the display panel 101 further includes: a power supply unit and multiple power supply circuits, wherein each power supply circuit includes: a first transistor, the emitter of which is connected to the ground terminal, the collector of which is connected to the negative terminal of the display unit array, and the base of which is connected to a first display control interface, wherein the first transistor is an NPN transistor; and a second transistor, the emitter of which is connected to the positive terminal of the power supply unit, the collector of which is connected to the positive terminal of the display unit array, and the base of which is connected to a second display control interface, wherein the second transistor is a PNP transistor.
[0062] The power supply unit is the part of the display system that provides independent power to the display unit array. In the power supply circuit of the display panel 101, the power supply unit provides the required power to the display unit array through the positive terminal (VCC) and the negative terminal (GND, i.e., the ground terminal). Figure 3 This is a schematic diagram of the power supply circuit in the display system according to an embodiment of the present utility model, as shown below. Figure 3 As shown, the power supply unit provides a 5V voltage, the first transistor (NPN type) is Q1, the second transistor (PNP type) is Q2, the first display control interface is the COM port, and the second display control interface is the SEG port.
[0063] like Figure 3As shown, the first transistor Q1 is used as a switching element. When the COM port receives a control signal, the base potential of the first transistor Q1 rises, and the first transistor Q1 turns on, thereby allowing current to flow from the negative terminal of the power supply unit through the collector to the negative terminal of the display unit array, providing a current path for lighting up the display units. The switching state of the first transistor Q1 is determined by the scanning time of the COM port. The longer the scanning time, the longer the display unit is activated, and the higher the brightness.
[0064] In this circuit, the second transistor Q2 is used as a switching element. When the signal from the SEG port causes the base potential of the second transistor Q2 to drop to a certain threshold, the second transistor Q2 turns on, allowing current to flow from the positive terminal of the power supply unit through the emitter and collector to the positive terminal of the display unit array. The conduction time of the second transistor Q2 is also controlled by the scan time of the SEG port it is connected to, ensuring accurate control of the brightness of the columns in the display unit array.
[0065] In this embodiment, NPN and PNP transistors work in conjunction with the first and second display control interfaces, respectively. When the second display control interface is at a low level, PNP transistor Q2 turns on, and when the first display control interface is at a high level, NPN transistor Q1 turns on, thereby illuminating the display units. Compared with illuminating the display unit array through the power supply of controller 103, the brightness adjustment is more flexible. In addition, by adjusting the scanning time of the first and second display control interfaces, the lighting time and current intensity of each display unit can be precisely controlled, thereby significantly improving the performance and user experience of the display panel 101 in various practical applications.
[0066] Optionally, in the display system provided in this embodiment of the present invention, each power supply circuit further includes: a first resistor connected in series between the second display control interface and the base of the second transistor; a second resistor connected in series between the first display control interface and the base of the first transistor; and a third resistor connected in series between the positive terminal of the display unit array and the base of the second transistor.
[0067] Among them, the first resistor is Figure 3R1, with a resistance of 1KΩ, is connected in series between the second display control interface (SEG port) and the base of the second transistor Q2 (PNP type). Its function is to act as the driving resistor for the base of the second transistor Q2. In the power supply circuit, when the SEG port receives a control signal, this signal is transmitted to the base of the second transistor Q2 through the first resistor R1. Since the switching state of the second transistor Q2 is affected by the base current, adjusting the value of the first resistor R1 can change this current, thus affecting the conduction level of the second transistor Q2. Furthermore, adjusting the resistance of the first resistor R1 can change the control effect of the SEG port signal on the second transistor Q2, thereby affecting the brightness of the display units in the column.
[0068] Among them, the second resistor is Figure 3 R2, with a resistance of 1KΩ, is connected in series between the first display control interface (COM port) and the base of the first transistor Q1 (NPN type). Its function is similar to that of the first resistor R1; when a control signal is input through the COM port, the second resistor R limits the current of the control signal within an appropriate range, ensuring that the first transistor Q1 can switch stably. Furthermore, by adjusting the value of the second resistor R2, the control effect of the COM port signal on the first transistor Q1 can be changed, thereby affecting the brightness of the in-line display unit.
[0069] Among them, the third resistor is Figure 3 R3, connected in series between the positive terminal of the display unit array and the collector of the second transistor Q2 (PNP type), primarily functions to limit current. During the lighting process of the display unit, current flows from the positive terminal of the power supply unit through the second transistor Q2 to the positive terminal of the display unit array. The presence of the third resistor R3 limits the intensity of this current, preventing excessive current from causing the display unit to overheat or be damaged.
[0070] This embodiment enhances the stability and safety of the circuit by adding a first resistor, a second resistor, and a third resistor to the power supply circuit, and also enables control over the brightness of the display unit.
[0071] Considering that the display panel 101 is designed with display units of different colors, if the scanning time is the same, the display units of different colors will also have different display brightness. Optionally, in the display system provided by this utility model embodiment, the brightness parameters of different display units are inversely correlated with the energy conversion efficiency, wherein the energy conversion efficiency refers to the efficiency of the display unit in converting electrical energy into light energy.
[0072] It should be noted that, even when different display units in the display panel 101 have the same physical size, their energy conversion efficiencies may differ (e.g., the energy conversion efficiencies of LEDs of different colors). Display units with higher energy conversion efficiencies can achieve the desired brightness with lower current, while display units with lower energy conversion efficiencies require more current to produce the same brightness. Therefore, for display units with lower energy conversion efficiencies, higher brightness parameters are assigned (e.g., setting a larger scan time for the first and second display control interfaces) to compensate for their insufficient brightness at the same current. For display units with higher energy conversion efficiencies, relatively lower brightness parameters are assigned (e.g., setting a smaller scan time for the first and second display control interfaces) to reduce the current flowing to these display units per unit time.
[0073] For example, the efficiency of LED light emission is related to the bandgap energy of the material, which in turn is related to the color (wavelength) of the light emitted by the LED. Therefore, different colors of LEDs have different energy conversion efficiencies. Green and yellow LEDs are the most efficient, followed by red, and then blue and purple LEDs. For instance, a red LED produces approximately 500 mcd of luminous flux at 20 mA, while a blue LED produces approximately 200 mcd of luminous flux under the same conditions. To achieve uniform brightness on an LED panel, in addition to considering the lighting time, the color characteristics of the LEDs also need to be taken into account.
[0074] For example, consider an LED panel with red, green, and blue LEDs, all controlled by the same controller that sets the same scan time for each light. Because red LEDs are more efficient at converting electrical energy into light energy than blue LEDs, even under the same current and voltage conditions, red LEDs may appear brighter than blue LEDs. Therefore, different currents or scan times need to be set for the different colored LEDs to compensate for the brightness differences caused by their color characteristics. Specifically, to make blue and red LEDs appear to have the same brightness, more current or a longer scan time can be given to the blue LEDs, while less current or a shorter scan time can be given to the red LEDs.
[0075] The display system in this embodiment ensures visual consistency and high-quality image display by setting the brightness parameter inversely to the energy conversion efficiency. This not only significantly reduces the brightness difference caused by uneven energy conversion efficiency of the display units, allowing users to experience a more uniform and delicate display effect, but also reduces the overall energy consumption of the display system and extends its service life by precisely controlling the current consumption of each display unit.
[0076] This utility model embodiment also provides a cooking utensil, which will be described below.
[0077] The cooking appliance includes a pot body, a lid, and a display system. The display panel of the display system can be mounted on the lid, while the memory and controller of the display system can be mounted on either the lid or the pot body.
[0078] For example, the cooking appliance can be a rice cooker, and both the pot and the lid of the rice cooker are curved. In order to adapt to the curved lid, the display panel of the display system is also curved. When the display units in the display unit array are located on the same plane, the distance between the different display units in the display unit array and the curved display surface is different.
[0079] To avoid uneven display brightness caused by differences in the distance between different display units and the curved display surface, the controller in the display system reads the brightness parameters from the memory and then controls the lighting time of different display units in the display unit array based on the brightness parameters.
[0080] For example, display units farther from the curved display surface have longer illumination times, resulting in more current flowing through them per unit time and achieving higher brightness. Conversely, display units closer to the curved display surface have shorter illumination times, resulting in less current flowing through them per unit time and achieving lower brightness. This ensures that the display units, regardless of their distance from the curved display surface, present visually uniform brightness, thus optimizing the viewing experience of the display panel.
[0081] Furthermore, it should be noted that the display system of this embodiment is not only applicable to cooking appliances, but also to other electrical appliances with curved surfaces, such as air conditioners and washing machines. This application does not limit the application scenario of the display system.
[0082] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0083] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A display system, characterized in that, include: The display panel includes a display unit array and an arc-shaped display surface above the display unit array. The display units in the display unit array have the same specifications, but the display distances of the display units in the display unit array are different. The display distance is the distance between the top of the display unit and the arc-shaped display surface. The memory stores the brightness parameters of the display unit array, wherein the brightness parameters of different display units are positively correlated with the display distance; The controller, connected to the memory and the display panel, is used to read the brightness parameters and illuminate the display units in the display unit array.
2. The display system according to claim 1, characterized in that, The display panel also includes: Multiple first display control interfaces are connected to the controller, and each first display control interface is connected to a row of display units in the display unit array; Multiple second display control interfaces are connected to the controller, and each second display control interface is connected to a column of display units in the display unit array.
3. The display system according to claim 2, characterized in that, The brightness parameter includes the scan time of the plurality of first display control interfaces and the scan time of the plurality of second display control interfaces, wherein the scan time of each first display control interface is used to determine the lighting time of a row of display units, and the scan time of each second display control interface is used to determine the lighting time of a column of display units.
4. The display system according to claim 3, characterized in that, The arc-shaped display surface has curvature in the X direction but not in the Y direction. The display distances of display units in different rows of the display unit array are different, while the display distances of display units in different columns of the display unit array are the same. The scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning time of the multiple second display control interfaces is the same.
5. The display system according to claim 3, characterized in that, The arc-shaped display surface has no curvature in the X direction but has curvature in the Y direction. The display distance of display units in different rows of the display unit array is the same, while the display distance of display units in different columns of the display unit array is different. The scanning time of the multiple first display control interfaces is the same, and the scanning time of each second display control interface is positively correlated with the display distance of the corresponding column of display units.
6. The display system according to claim 3, characterized in that, The arc-shaped display surface has curvature in both the X and Y directions. The display distances of display units in different rows of the display unit array are different, and the display distances of display units in different columns of the display unit array are different. The scanning time of each first display control interface is positively correlated with the display distance of the corresponding row of display units, and the scanning time of each second display control interface is positively correlated with the display distance of the corresponding column of display units.
7. The display system according to claim 3, characterized in that, The display panel further includes: a power supply unit, and multiple power supply circuits, wherein each power supply circuit includes: The first transistor has its emitter connected to the ground terminal, its collector connected to the negative terminal of the display unit array, and its base connected to a first display control interface. The first transistor is an NPN transistor. The second transistor has its emitter connected to the positive terminal of the power supply unit, its collector connected to the positive terminal of the display unit array, and its base connected to a second display control interface. The second transistor is a PNP type transistor.
8. The display system according to claim 7, characterized in that, Each power supply circuit also includes: The first resistor is connected in series between the second display control interface and the base of the second transistor; The second resistor is connected in series between the first display control interface and the base of the first transistor; The third resistor is connected in series between the positive terminal of the display unit array and the base of the second transistor.
9. The display system according to claim 1, characterized in that, The brightness parameters and energy conversion efficiency of different display units are inversely correlated, whereby the energy conversion efficiency refers to the efficiency of the display unit in converting electrical energy into light energy.
10. A cooking utensil, characterized in that, include: The pot body, the lid body, and the display system according to any one of claims 1 to 9.