Display control method of double-layer ink electrowetting electronic paper and related equipment

Abstract

The embodiment of the invention provides a display control method of double-layer ink electrowetting electronic paper and related equipment. The method comprises the following steps: acquiring a target three-primary-color matrix; identifying a minimum color component value, and determining a gray base value according to the minimum color component value; calculating a first color component difference value according to the color component value of the second color channel and the gray base value, and calculating a second color component difference value according to the color component value of the third color channel and the gray base value; calculating the ink aperture opening ratio of the first double-layer ink sub-pixel unit according to the gray base value and the preset color component value; calculating the ink aperture ratio of the second double-layer ink sub-pixel unit according to the first color component difference value and a preset color component value, and calculating the ink aperture ratio of the third double-layer ink sub-pixel unit according to the second color component difference value and the preset color component value; and performing display control on the electrowetting electronic paper based on the ink aperture opening ratio. According to the embodiment of the invention, the color accuracy displayed by the electrowetting electronic paper can be improved.

Description

Technical Field

[0001] This application relates to the field of electrowetting display technology, and in particular to a display control method and related equipment for double-layer ink electrowetting electronic paper. Background Technology

[0002] Electrowetting display technology, as a novel reflective display technology, boasts advantages such as low power consumption, high contrast, and wide viewing angle, showing broad application prospects in fields such as electronic paper, electronic signage, and smart wearable devices. Its core principle is the electrowetting effect, which involves applying an electric field to change the surface tension of a liquid, thereby controlling the movement and distribution of droplets to achieve pixel brightness and darkness.

[0003] Existing electro-wetting electronic paper has a single-layer ink structure, but this structure cannot meet the market demand for full-color displays. Therefore, electro-wetting electronic paper with a dual-layer ink structure has been developed. This structure improves the color performance and contrast of electro-wetting electronic paper through the synergistic effect of color and black inks. However, dual-layer electro-wetting display technology still faces many challenges in color mixing control.

[0004] The electrowetting electronic paper display control method in related technologies cannot accurately calculate the device parameters of the electrowetting electronic paper based on the given color parameters, resulting in low color accuracy of the electrowetting electronic paper display. Summary of the Invention

[0005] The main objective of this application is to propose a display control method and related equipment for double-layer ink electrowetting electronic paper, aiming to provide a method for calculating device parameters of electrowetting electronic paper based on given color parameters, so as to improve the color accuracy of electrowetting electronic paper display.

[0006] To achieve the above objectives, a first aspect of this application proposes a display control method for a double-layer ink electrowetting electronic paper. The pixel model of the electrowetting electronic paper includes multiple double-layer ink pixel units, and each double-layer ink pixel unit includes three double-layer ink sub-pixel units arranged side by side. The method includes:

[0007] Obtain the target three primary color matrix corresponding to the dual-layer ink pixel unit. The target three primary color matrix includes component values ​​corresponding to three color channels. Each color channel corresponds to a dual-layer ink sub-pixel unit.

[0008] Identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and determine the gray base value corresponding to the three color channels based on the smallest color component value;

[0009] The first color component difference of the second color channel is calculated based on the difference between the color component value of the second color channel in the target three primary color matrix and the gray base value, and the second color component difference of the third color channel is calculated based on the difference between the color component value of the third color channel in the target three primary color matrix and the gray base value.

[0010] Calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value;

[0011] The second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel is calculated based on the first color component difference and the preset color component value, and the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel is calculated based on the second color component difference and the preset color component value.

[0012] The display control of the electrowetting electronic paper is based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

[0013] Optionally, in some embodiments, each of the dual-layer ink sub-pixel units includes an upper layer of colored ink and a lower layer of black ink, wherein the upper layer of colored ink and the lower layer of black ink have the same opening direction.

[0014] Optionally, in some embodiments, the first dual-layer ink sub-pixel unit includes a first upper layer primary color ink and a first lower layer black ink, and the step of calculating the first ink aperture ratio of the first dual-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value includes:

[0015] Calculate the first lower layer ink aperture ratio corresponding to the first lower layer black ink based on the gray base value and the preset color component value;

[0016] The first upper layer ink aperture ratio corresponding to the first upper layer primary color ink is determined based on the first lower layer ink aperture ratio.

[0017] The first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel is determined based on the first upper layer ink aperture ratio and the first lower layer ink aperture ratio.

[0018] Optionally, in some embodiments, calculating the first lower layer ink aperture ratio corresponding to the first lower layer black ink based on the gray base value and the preset color component value includes:

[0019] Calculate the ratio of the gray base value to the preset color component value;

[0020] The first lower layer ink aperture ratio corresponding to the first lower layer black ink is determined based on the ratio.

[0021] Optionally, in some embodiments, the display control of the electrowetting electronic paper based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio includes:

[0022] Calculate the first display three primary color matrix corresponding to the first double-layer ink sub-pixel unit based on the first ink aperture ratio;

[0023] The second display primary color matrix corresponding to the second double-layer ink sub-pixel unit is calculated based on the second ink aperture ratio, and the third display primary color matrix corresponding to the third double-layer ink sub-pixel unit is calculated based on the third ink aperture ratio.

[0024] The display control of the electrowetting electronic paper is performed based on the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix.

[0025] Optionally, in some embodiments, the step of controlling the display of the electrowetting electronic paper based on the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix includes:

[0026] The first display color component value of the first dual-layer ink sub-pixel unit is calculated based on the sum of the first color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively.

[0027] The second display color component value of the second double-layer ink sub-pixel unit is calculated based on the sum of the second color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively.

[0028] The third display color component value of the third double-layer ink sub-pixel unit is calculated based on the sum of the third color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively.

[0029] The display control of the electrowetting electronic paper is performed based on the first display color component value, the second display color component value, and the third display color component value.

[0030] Optionally, in some embodiments, the step of controlling the display of the electrowetting electronic paper based on the first display color component value, the second display color component value, and the third display color component value includes:

[0031] Calculate the first product of the preset color mixing ratio and the first display color component value;

[0032] Calculate the second product of the preset color mixing ratio and the second display color component value, and calculate the third product of the preset color mixing ratio and the third display color component value;

[0033] The pixel color matrix of the dual-layer ink pixel unit is calculated based on the sum of the first product, the second product, and the third product, and the display control of the electrowetting electronic paper is performed based on the pixel color matrix.

[0034] To achieve the above objectives, a second aspect of this application provides a display control device for electrowetting electronic paper. The pixel model of the electrowetting electronic paper includes a plurality of double-layer ink pixel units, each of the double-layer ink pixel units including three double-layer ink sub-pixel units arranged side by side. The device includes:

[0035] The acquisition unit is used to acquire the target three primary color matrix corresponding to the dual-layer ink pixel unit. The target three primary color matrix includes component values ​​corresponding to three color channels, and each color channel corresponds to a dual-layer ink sub-pixel unit.

[0036] The determining unit is used to identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and to determine the gray base value corresponding to the three color channels based on the smallest color component value;

[0037] The first calculation unit calculates the first color component difference of the second color channel based on the difference between the color component value of the second color channel in the target three primary color matrix and the gray base value, and calculates the second color component difference of the third color channel based on the difference between the color component value of the third color channel in the target three primary color matrix and the gray base value.

[0038] The second calculation unit is used to calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value.

[0039] The third calculation unit is used to calculate the second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel based on the first color component difference and the preset color component value, and to calculate the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel based on the second color component difference and the preset color component value.

[0040] The display control unit is used to perform display control on the electrowetting electronic paper based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

[0041] To achieve the above objectives, a third aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method described in the first aspect.

[0042] To achieve the above objectives, a fourth aspect of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect.

[0043] This application proposes a display control method and related equipment for dual-layer ink electrowetting electronic paper. By identifying the minimum color component value in the target three-primary-color matrix, a unified gray base value is generated, ensuring that the three color channels share the same dark area brightness reference. This improves the detail performance and color consistency of the electrowetting electronic paper in low-light environments. The embodiments of this application provide a method for calculating the device parameters of the electrowetting electronic paper based on given color parameters. The ink aperture ratio is calculated independently based on the difference between the color component value and the gray base value of each channel, decoupling the nonlinear color mixing problem into a linear problem of gray base value and color saturation compensation. This avoids color shift problems caused by optical crosstalk in multi-layer ink structures. In this way, the three dual-layer ink sub-pixel units collaboratively participate in color synthesis (the first color channel generates the brightness base, and the second and third color channels compensate for the color saturation difference), thereby maximizing the utilization of the reflectivity of all sub-pixels and improving the color accuracy of the electrowetting electronic paper display. Attached Figure Description

[0044] Figure 1 This is a flowchart of the display control method for double-layer ink electrowetting electronic paper provided in the embodiments of this application;

[0045] Figure 2 This is a schematic diagram of the pixel structure of the electrowetting electronic paper provided in the embodiments of this application;

[0046] Figure 3 A schematic diagram of the structure of the double-layer ink sub-pixel unit corresponding to the red sub-pixel channel provided in this application;

[0047] Figure 4 A schematic diagram of the color display logic provided in this application;

[0048] Figure 5A A schematic diagram of the color display logic provided in this application;

[0049] Figure 5B A schematic diagram of the color display logic provided in this application;

[0050] Figure 6A A schematic diagram of the color display logic provided in this application;

[0051] Figure 6B A schematic diagram of the color display logic provided in this application;

[0052] Figure 7A A schematic diagram of the color display logic provided in this application;

[0053] Figure 7B A schematic diagram of the color display logic provided in this application;

[0054] Figure 8A A schematic diagram of the color display logic provided in this application;

[0055] Figure 8B A schematic diagram of the color display logic provided in this application;

[0056] Figure 9 A schematic diagram illustrating the results of the forward algorithm provided in this application;

[0057] Figure 10A A schematic diagram of the pixel color mixing result provided in this application;

[0058] Figure 10B A schematic diagram of pixel color mixing results provided for related technologies;

[0059] Figure 11 This is a schematic diagram of the structure of the display control device for electrowetting electronic paper provided in the embodiments of this application;

[0060] Figure 12 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0062] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0064] Electrowetting display technology, as a novel reflective display technology, boasts advantages such as low power consumption, high contrast, and wide viewing angle, showing broad application prospects in fields such as electronic paper, electronic signage, and smart wearable devices. Its core principle is the electrowetting effect, which involves applying an electric field to change the surface tension of a liquid, thereby controlling the movement and distribution of droplets to achieve pixel brightness and darkness.

[0065] Traditional single-layer ink electrowetting devices can only achieve black and white or limited color gamut displays, failing to meet the demands of full-color displays. Therefore, dual-layer ink electrowetting electronic paper has emerged. This structure enhances the color performance and contrast of electronic paper through the synergistic effect of colored and black inks. While the dual-layer ink structure can improve contrast by introducing a light-shielding layer, related technologies have failed to fully consider the influence of the black ink layer on the optical properties of the colored ink layer. This makes it difficult to accurately predict color performance under different aperture ratio combinations in dual-layer ink structures. When simulating high-saturation colors, the color mixing models in related technologies cannot accurately calculate the optimal ratio of black to colored ink layers, easily leading to color shifts or insufficient contrast.

[0066] Furthermore, due to the nonlinear optical response of electrowetting display devices and the optical crosstalk between the color ink layer and the black ink layer, when given target color parameters, the relevant technologies cannot accurately derive the device parameters of electrowetting electronic paper based on the color parameters, which in turn leads to low color accuracy of electrowetting electronic paper displays.

[0067] Based on this, embodiments of this application provide a display control method and related equipment for double-layer ink electrowetting electronic paper, aiming to provide a method for accurately deriving device parameters of electrowetting electronic paper from given target color parameters, thereby improving the color accuracy of electrowetting electronic paper display.

[0068] The display control method and related equipment for double-layer ink electrowetting electronic paper provided in this application are specifically described through the following embodiments. First, the display control method for double-layer ink electrowetting electronic paper in this application embodiment is described.

[0069] This application can be used in a wide variety of general-purpose or special-purpose computer system environments or configurations. Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments including any of the above systems or devices. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0070] Figure 1 This is an optional flowchart of the display control method for double-layer ink electrowetting electronic paper provided in the embodiments of this application. Figure 1 The method may include, but is not limited to, steps S101 to S106.

[0071] Step S101: Obtain the target three primary color matrix corresponding to the double-layer ink pixel unit;

[0072] Step S102: Identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and determine the gray base value corresponding to the three color channels based on the smallest color component value;

[0073] Step S103: Calculate the first color component difference of the second color channel based on the difference between the color component value of the second color channel and the gray base value in the target three primary color matrix, and calculate the second color component difference of the third color channel based on the difference between the color component value of the third color channel and the gray base value in the target three primary color matrix.

[0074] Step S104: Calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value.

[0075] Step S105: Calculate the second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel based on the first color component difference and the preset color component value, and calculate the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel based on the second color component difference and the preset color component value.

[0076] Step S106: Display control of the electrowetting electronic paper is performed based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

[0077] Steps S101 to S106 of this application embodiment generate a unified gray base value by identifying the minimum color component value in the target three primary color matrix, ensuring that the three color channels share the same dark area brightness reference, thereby improving the detail performance and color consistency of the electro-wetting electronic paper in low-light environments. This application embodiment provides a method for calculating the device parameters of electro-wetting electronic paper based on given color parameters. The ink aperture ratio is calculated independently based on the difference between the color component value of each channel and the gray base value, decoupling the nonlinear color mixing problem into a linear problem of gray base value and color saturation compensation, avoiding color shift problems caused by optical crosstalk in multi-layer ink structures. Thus, the three dual-layer ink sub-pixel units collaboratively participate in color synthesis (the first color channel generates the brightness base, and the second and third color channels compensate for the color saturation difference), thereby maximizing the utilization of the reflectivity of all sub-pixels and improving the color accuracy of the electro-wetting electronic paper display.

[0078] The method provided in this application can be applied to electrowetting electronic paper. The pixel model of the electrowetting electronic paper includes multiple double-layer ink pixel units. Each double-layer ink pixel unit consists of three stacked layers from top to bottom: a colored ink layer, a black ink layer, and a white substrate. The colored ink layers include ink layers corresponding to red (R), green (G), and blue (B), respectively. The aperture ratio of each color ink layer can be independently controlled (0%-100%). The lower black ink layer corresponds one-to-one with the colored ink layers. The black layer acts as a light-shielding layer to suppress ambient light crosstalk, and the white substrate acts as the bottom reflective layer to provide background brightness. Vertically, each double-layer ink pixel unit includes three parallel double-layer ink sub-pixel units. The structure of each double-layer ink sub-pixel unit consists of an upper colored ink layer and a lower black ink layer. From another perspective, a pixel grid of the electrowetting electronic paper consists of three sub-pixel grids: red, green, and blue sub-pixel grids.

[0079] The light propagation logic of the above model is as follows: incident light first passes through the upper layer of colored ink (partially absorbed or reflected), and the unabsorbed light reaches the lower layer of black ink, where it is absorbed or reflected again to the white substrate. Finally, the reflected light mixes to form the color seen by the human eye. The lower the aperture ratio of the black ink layer and the larger the area covered by the black ink, the more light is absorbed, and the darker the displayed color. The lower the aperture ratio of the colored ink layer and the larger the area covered by the colored ink, the stronger the reflection of the corresponding colored light, and the more obvious the hue.

[0080] For example, please refer to Figure 2 , Figure 2 This is a schematic diagram of the pixel model structure of the electrowetting electronic paper provided in the embodiments of this application, as shown below. Figure 2As shown, the dual-layer ink pixel unit includes three dual-layer ink sub-pixel units arranged side by side. The first dual-layer ink sub-pixel unit on the left includes an upper red ink layer 210 and a first lower black ink layer 240. The middle dual-layer ink sub-pixel unit includes an upper green ink layer 220 and a second lower black ink layer 250. The rightmost dual-layer ink sub-pixel unit includes an upper blue ink layer 230 and a third lower black ink layer 260. The dual-layer ink pixel unit also includes a white substrate 270.

[0081] In step S101 of some embodiments, when a screen rendering command is received, the required display color parameters of each double-layer ink pixel unit in the electrowetting electronic paper can be obtained. These required display color parameters can be HSV (Hue, Saturation, Value) or LAB (Lightness, a-axis, b-axis), etc. Regardless of the format of the input required display color parameters, they can be normalized to the standard RGB space to generate an RGB vector in the range of integers 0-255, thus obtaining the target three-primary-color matrix.

[0082] The target tri-color matrix includes component values ​​corresponding to three color channels. For a given target tri-color matrix, it can be decomposed into three sub-pixels, generating an independent RGB vector for each sub-pixel. For example, for the target tri-color matrix [R_sub, G_sub, B_sub], the RGB vector corresponding to the red color channel is [R_sub, 0, 0], the RGB vector corresponding to the green color channel is [0, G_sub, 0], and the RGB vector corresponding to the blue color channel is [0, 0, B_sub]. Each color channel can correspond to a double-layer ink sub-pixel unit, and each double-layer ink pixel unit can correspond to a 3×3 RGB matrix, which can be represented as follows:

[0083]

[0084] Wherein, [R_red,G_red,B_red] represents the target output of the double-layer ink sub-pixel unit corresponding to the red channel, [R_green,G_green,B_green] represents the target output of the double-layer ink sub-pixel unit corresponding to the green channel, and [R_blue,G_blue,B_blue] represents the target output of the double-layer ink sub-pixel unit corresponding to the blue channel.

[0085] In step S102 of some embodiments, the color component value corresponding to each color channel in the target three-primary-color matrix can be obtained, and the color component values ​​corresponding to the three color channels can be compared to obtain the minimum color component value. The color channel where the minimum color component value is located is then determined, i.e., the first color channel. For example, if the target three-primary-color matrix is ​​[R_red, G_green, B_blue] = [150, 70, 50], and the minimum color component value is found to be 50, located in the blue sub-pixel channel, then the first color channel is the blue channel.

[0086] Furthermore, the gray base values ​​corresponding to the three color channels can be determined based on the minimum color component value. Specifically, the minimum color component value of 50 is used as the brightness reference for the entire pixel to generate the gray base, where the gray base indicates that the pixel color displayed by the sub-pixel is gray. In this way, the first color channel can be removed from the color mixing task and used exclusively to provide brightness support. The RGB matrix corresponding to the gray base can be represented as [min_val,min_val,min_val]=[50,50,50], where the gray base value is the pixel value corresponding to the gray pixel, that is, the gray base value is 50.

[0087] In step S103 of some embodiments, the first color component difference of the second color channel can be calculated based on the difference between the color component value of the second color channel and the gray base value in the target three primary color matrix, wherein the second color channel is any one of the three color channels other than the first color channel.

[0088] As illustrated in the previous example, if the first color channel is a blue sub-pixel channel with a gray base value of 50, and the second color channel is a green sub-pixel channel, then the difference in the first color component of the second color channel can be calculated using the following formula:

[0089] ΔG=G_green-min_val=70-50=20

[0090] Where ΔG represents the first color component difference, G_green represents the color component value of the second color channel, and min_val represents the gray base value, the first color component difference vector is [0,20,0].

[0091] Referring to the above method, the difference of the second color component of the third color channel can be calculated based on the difference between the color component value of the third color channel and the gray base value in the target three primary color matrix. Continuing with the example above, assuming the third color channel is the red sub-pixel channel and the gray base value is 50, the difference of the second color component of the third color channel can be calculated using the following formula:

[0092] ΔR = R_red - min_val = 150 - 50 = 100

[0093] Where, ΔR represents the difference of the second color component, R_red represents the color component value of the third color channel, and min_val represents the gray base value. Then the vector of the second color component difference is [0, 100, 0].

[0094] In step S104 of some embodiments, the ink opening rate of the double-layer ink sub-pixel unit can be calculated based on the gray base value, the difference of the first color component, and the difference of the second color component obtained in the foregoing steps, that is, the device parameters of the electro-wetting electronic paper are solved according to the given color parameters. Before introducing the reverse control algorithm for deriving the device parameters of the electro-wetting electronic paper from the given color parameters provided in this application, some experimental conclusions will be described first to provide a theoretical basis for introducing the reverse control algorithm.

[0095] The double-layer ink sub-pixel model provided in the embodiments of this application consists of upper and lower layers of ink. The upper layer is a pure-color ink of one of the three primary colors, and the lower layer is a black ink. Exemplarily, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the double-layer ink sub-pixel unit corresponding to the red sub-pixel channel provided in this application. As Figure 3 shown, the upper layer is a red layer, and the lower layer is a black layer. When the ink opening rate is 0, it means that the ink layer is completely closed. When the ink opening rate is 1, it means that the ink layer is completely open.

[0096] Taking the red double-layer ink sub-pixel unit as an example to introduce the color display logic. Assume that R represents the opening rate of the red layer, and K represents the opening rate of the black layer: R RGB , G RGB , B RGB respectively represent the RGB color component values (the value range is 0 - 255, integer). The logic of the color phenomenon generated by the change of the opening rates of the two layers of ink is as follows: (1) When the black layer is fully closed (K = 0), regardless of the state of the red layer, due to the light absorption performance of the black ink, the finally displayed color is black, R RGB = 0, G RGB = 0, B RGB = 0. Or, when the opening rate of the red layer is greater than or equal to the opening rate of the black layer, that is, when R ≥ K, 0 < R < 1 and 0 < K < 1, the component values of the three color channels are equal, and the finally displayed color is black. Exemplarily, please refer to Figure 4 , as Figure 4As shown, when the black layer is fully closed, regardless of the state of the red layer, the finally displayed color is black. (2) When the opening ratio of the upper red ink layer is 0 and the opening state of the lower black ink layer changes from closed to open, the color effect presented at this time realizes the grayscale display transition from pure black to the corresponding red. That is, when R = 0 and K > 0, only the red component changes with the opening ratio of the black layer, R RGB = 255 * K, G RGB = 0, B RGB = 0. Exemplarily, please refer to Figure 5A and Figure 5B , such as Figure 5A and Figure 5B shown, from Figures 5A to 5B , the RGB matrix changes from [61, 0, 0] to [179, 0, 0], and the opening ratio of the black layer changes from 23.8% to 70.1%, indicating that the presented color effect gradually transitions from pure black to red. (3) When the opening ratio of the lower black ink layer is 1, that is, when the ink layer of this layer is in a fully open state, during the process of the opening state of the upper red ink layer changing from closed to open, the color effect presented at this time realizes the grayscale display transition from the corresponding red to white (this part of the content compensates for the blank that the double-layer ink pixel unit of the electro-wetting electronic paper in the related technology can only achieve the conversion from black to red and cannot achieve the grayscale display transition from red to white). That is, when K = 1 and R > 0, the red component is fixed at the maximum value, and the green and blue components change with the opening ratio of the red layer. Exemplarily, please refer to Figure 6A and Figure 6B , the black layer is fully open, and the red layer gradually transitions from fully closed to fully open. From Figures 6A to 6B , the RGB matrix changes from [255, 0, 0] to [255, 255, 255], and the opening ratio of the red layer changes from 0% to 100%, achieving the transition from red to white. (4) When the opening ratio (K) of the lower black ink layer is greater than the opening ratio (R) of the upper red ink layer, during the process of controlling the opening ratio of the upper pure color ink layer to make them equal, the color effect presented at this time realizes the grayscale display transition from the corresponding darker red to gray. That is, when R < K, 0 < R < 1, and 0 < K < 1, the red component changes with the opening ratio of the black layer, the green and blue components change with the opening ratio of the red layer, T RGB = 255 * K, G RGB = 255 * R, B RGB = 255 * R. Exemplarily, please refer to Figure 7A and Figure 7B , from Figures 7A to 7B, the aperture ratio of the lower - layer black ink is always greater than that of the upper - layer red ink. Assuming that when the aperture ratio of the lower - layer black ink is a%, as the aperture ratio of the upper - layer red ink gradually transitions from 0 to a%, the color gradually changes from a darker red to gray, and the RGB matrix gradually changes from [102, 0, 0] to [102, 102, 102], and the aperture ratio of the red layer changes from 0% to 40%. If the aperture ratio of the lower - layer black ink layer further increases at this time while the opening state of the upper - layer pure - color ink layer remains unchanged, the color effect presented at this time can achieve a gray - scale display transition from gray to the corresponding red. (5) When the aperture ratios of the upper - layer red ink and the lower - layer black ink always remain equal during the movement process, due to the strong light - absorption property of the black ink, it can be regarded as a whole, that is, a single - layer black - ink device. Then, the process of the aperture ratio changing from 0% to 100% realizes the transition process from black to white. At this time, the component values of the three color channels are equal, and as the aperture ratio of the black layer changes, R RGB = 255*K, G RGB = 255*K, B RGB = 255*K. Exemplarily, please refer to Figure 8A and Figure 8B . At each moment of ink movement, the aperture of the upper - layer red ink layer is always equal to the aperture of the lower - layer black ink. During this process, the finally displayed pixel color transitions from dark gray to light gray. When the aperture ratios of the two change from 0 to 1, a gray - scale display transition from black to white can be achieved. From Figures 8A to 8B , the aperture ratios of the two gradually increase, and the RGB matrix gradually changes from [77, 77, 77] to [153, 153, 153]. Figure 8A In, the aperture ratios of both the red layer and the black layer are 30%. Figure 8B In, the aperture ratios of both the red layer and the black layer are 60%, and the color transitions from dark gray to light gray. It can be understood that when the red layer is fully open and the aperture ratio of the black layer changes, that is, when R = 1 and 0 < K < 1, the component values of the three color channels are equal, R RGB = 255*K, G RGB = 255*K, B RGB = 255*K, and the finally displayed color presents a gray - scale effect.

[0097] The above content is the logical relationship between the ink change combinations of sub - pixels and the finally displayed colors of sub - pixel cells. This example takes the double - layer ink sub - pixel unit corresponding to the red channel as an example. For the double - layer ink sub - pixel units corresponding to the green channel and the blue channel, the above - mentioned color display logic can be deduced. Then, the pixels of the three sub - pixel cells are combined according to the method of adding the three primary colors, and the sum of the RGB matrices of the displayed colors of each sub - pixel cell is the final pixel color.

[0098] Based on the above derivation, the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel can be calculated according to the gray base value and the preset color component value, that is, the ink aperture ratio of the double-layer ink sub-pixel unit corresponding to the gray base can be calculated.

[0099] In some embodiments, the first double-layer ink sub-pixel unit includes a first upper layer primary color ink and a first lower layer black ink. Calculating the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and a preset color component value includes the following steps:

[0100] Calculate the opening ratio of the first lower layer ink corresponding to the first lower layer black ink based on the gray base value and the preset color component value;

[0101] The aperture ratio of the first upper layer primary color ink is determined based on the aperture ratio of the first lower layer ink.

[0102] The first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel is determined based on the first upper layer ink aperture ratio and the first lower layer ink aperture ratio.

[0103] Specifically, as described above, taking the input target three-primary-color matrix as [150, 70, 50] as an example, the smallest color component value identified by comparing the component values ​​of the three color channels is 50, and the corresponding first color channel is the blue channel. Thus, a gray pixel display of [50, 50, 50] needs to be implemented in the blue channel. Based on the color display logic of the double-layer sub-pixel ink unit derived above, the final display color of the sub-pixel is gray only when the aperture ratio of the upper and lower ink layers is equal.

[0104] Thus, according to the fifth rule in the sub-pixel-based color display logic, the final displayed gray pixel value changes with the aperture ratio of the black ink layer. Then, the first ink aperture ratio corresponding to the first double-layer ink sub-pixel unit corresponding to the first color channel can be calculated. The first double-layer ink sub-pixel unit includes a first upper primary color ink and a first lower black ink, with the first lower black ink corresponding to the first lower ink aperture ratio. Specifically, the first lower ink aperture ratio can be calculated based on the gray base value and preset color component values.

[0105] In some embodiments, calculating the first lower layer ink aperture ratio corresponding to the first lower layer black ink based on the gray base value and the preset color component value includes the following steps:

[0106] Calculate the ratio of the gray base value to the preset color component value;

[0107] The aperture ratio of the first lower layer black ink is determined based on the ratio.

[0108] Specifically, based on the color display logic described above, the relationship between the gray base value and the aperture ratio of the first lower layer ink corresponding to the first lower layer black ink is B. RGB =255*K, where 255 is the preset color component value, that is, the maximum value in the range of color component values ​​of the three primary colors. Therefore, it can be deduced that K = B. RGB / 255, at this time B RGB =min_val, that is, K = min_val / 255. The aperture ratio of the first lower layer ink is equal to the ratio of the gray base value to the preset color component value, that is, K = (50 / 255) * 100% = 19.6%. Therefore, the aperture ratio of the lower black ink corresponding to the double-layer ink sub-pixel unit corresponding to the blue channel can be calculated to be 19.6%.

[0109] Furthermore, after calculating the aperture ratio of the first lower layer black ink corresponding to the first lower layer of the first double-layer ink sub-pixel unit, the aperture ratio of the first upper layer primary color ink corresponding to the first double-layer ink sub-pixel unit can be determined based on the aperture ratio of the first lower layer ink. According to the aforementioned color display logic, the aperture ratio of the upper layer ink of the gray sub-pixel is equal to the aperture ratio of the lower layer ink; therefore, the aperture ratio of the first upper layer ink is equal to the aperture ratio of the first lower layer ink, i.e., the aperture ratio of the first upper layer ink is 19.6%.

[0110] Thus, it can be determined that the first ink aperture ratio of the first dual-layer ink sub-pixel unit corresponding to the first color channel includes the first upper ink aperture ratio of 19.6% and the first lower ink aperture ratio of 19.6%.

[0111] This application embodiment ensures that all sub-pixels participate in emission by using a minimum value channel priority strategy. By generating a gray base with the minimum color channel component value, the separation of brightness and chromaticity is achieved, avoiding dark hue shift, thereby effectively improving brightness and color accuracy.

[0112] In step S105 of some embodiments, after generating the gray base corresponding to the minimum value channel (first color channel), the ink aperture ratio can be calculated based on the two remaining channels (second color channel and third color channel) other than the first color channel, and the color of the final display can be supplemented by the sub-pixel values ​​corresponding to the second color channel and the third color channel.

[0113] In the example above, the first color channel is the blue channel, the second color channel is the green channel, and the third color channel is the red channel. The calculated difference in the first color component is ΔG = 20, and the preset color component value is 255. According to the second rule in the aforementioned color display logic, when the aperture ratio of the upper solid color ink layer is 0, and the aperture state of the lower black ink layer changes from closed to open, the color effect presented achieves a transition from pure black to the corresponding solid color grayscale display. G RGB =255*K. Therefore, the aperture ratio K corresponding to the lower black ink layer of the second double-layer ink sub-pixel unit corresponding to the second color channel can be calculated as K = (ΔG / 255)*100% = (20 / 255)*100% = 7.8%. Correspondingly, the aperture ratio of the upper colored ink layer of the second double-layer ink sub-pixel unit is 1. Thus, the second ink aperture ratio corresponding to the second double-layer ink sub-pixel unit includes the aperture ratio of 1 corresponding to the upper colored ink layer and the aperture ratio of 7.8% corresponding to the lower black ink layer.

[0114] Similarly, the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel can be further calculated using the above method. Specifically, based on the aforementioned example, assuming the third color channel is the red channel, the calculated second color component difference value is ΔR = 100, and the preset color component value is 255. According to the second rule in the aforementioned color display logic, when the aperture ratio of the upper pure color ink layer is 0, and the opening state of the lower black ink layer changes from closed to open, the color effect presented at this time achieves a transition from pure black to the corresponding pure color grayscale display. R RGB =255*K. Therefore, the aperture ratio K for the lower black ink layer of the third double-layer ink sub-pixel unit corresponding to the third color channel can be calculated as K = (ΔR / 255)*100% = (100 / 255)*100% = 39.2%. Correspondingly, the aperture ratio for the upper color ink layer of the third double-layer ink sub-pixel unit is 1. Thus, the aperture ratio of the third ink layer corresponding to the third double-layer ink sub-pixel unit includes the aperture ratio of 1 for the upper color ink layer and the aperture ratio of 39.2% for the lower black ink layer.

[0115] Thus, this embodiment can calculate the second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel, and calculate the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel. This allows complex color mixing to be decomposed into independent monochrome control (Rule 2), avoiding the optical crosstalk problem inherent in the double-layer ink structure, and eliminating the need to decouple the optical response of the multi-layer ink structure, greatly improving the calculation efficiency of device parameters for electrowetting electronic paper. Furthermore, this embodiment locks the base brightness using a gray base, and then accurately restores saturation through monochrome compensation. This separates brightness (gray base) from chromaticity (monochrome compensation), avoiding the technical problem of dark area hue shift.

[0116] In step S106 of some embodiments, the electrowetting electronic paper can be controlled for display based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio calculated in the aforementioned steps. By controlling the aperture ratio of the upper primary color ink and the lower black ink of the first double-layer ink sub-pixel unit to be equal, a gray base is generated, and the sub-pixel corresponding to the first color channel is obtained. Then, the aperture ratio of the ink layer of the second double-layer ink sub-pixel unit is controlled according to the second ink aperture ratio to obtain the sub-pixel corresponding to the second color channel, and the aperture ratio of the ink layer of the third double-layer ink sub-pixel unit is controlled according to the third ink aperture ratio to obtain the sub-pixel corresponding to the third color channel, generating a pure color compensation component. Finally, the RGB matrix corresponding to the displayed pixel can be obtained by superimposing the RGB matrices corresponding to the sub-pixels of the three color channels.

[0117] In some embodiments, display control of electrowetting electronic paper based on a first ink aperture ratio, a second ink aperture ratio, and a third ink aperture ratio includes the following steps:

[0118] Calculate the first display three primary color matrix corresponding to the first double-layer ink sub-pixel unit based on the first ink aperture ratio;

[0119] The second display three primary color matrix corresponding to the second double-layer ink sub-pixel unit is calculated based on the second ink aperture ratio, and the third display three primary color matrix corresponding to the third double-layer ink sub-pixel unit is calculated based on the third ink aperture ratio.

[0120] Display control of electrowetting electronic paper is achieved based on the first display three primary color matrix, the second display three primary color matrix, and the third display three primary color matrix.

[0121] In this embodiment, the RGB matrix corresponding to each sub-pixel can be calculated first using the aperture ratio of the double-layer ink sub-pixel unit corresponding to each color channel. This is a forward derivation of the display color parameters from the device parameters. Specifically, the first display three primary color matrix corresponding to the first double-layer ink sub-pixel unit can be calculated based on the first ink aperture ratio.

[0122] Taking the double-layer ink sub-pixel unit corresponding to the red channel as an example, when the aperture ratio R of the upper red ink layer is 10% and the aperture ratio RK of the lower black ink layer is 30%, the RGB matrix of the red sub-pixel can be obtained as [77,26,26]. Please refer to the experimental results. Figure 9 ,like Figure 9 As shown, the first display three primary color matrix corresponding to the red sub-pixel is [77,26,26], the aperture ratio of the red layer is 10%, and the aperture ratio of the black layer is 30%.

[0123] Referring to the aforementioned steps, similarly, the second display primary color matrix corresponding to the second double-layer ink sub-pixel unit can be calculated based on the second ink aperture ratio, and the third display primary color matrix corresponding to the third double-layer ink sub-pixel unit can be calculated based on the third ink aperture ratio. Taking the double-layer ink sub-pixel units corresponding to the blue channel and green channel as examples, when the upper green ink aperture ratio G = 20% and the lower black ink aperture ratio GK = 50%, the RGB matrix corresponding to the green sub-pixel can be obtained as [51,128,51]; similarly, for the blue sub-pixel, when the upper blue ink aperture ratio B = 15% and the lower black ink aperture ratio BK = 25%, the RGB matrix corresponding to the blue sub-pixel can be calculated as [28,38,64].

[0124] Understandably, in some color simulation models, the ink aperture ratio of sub-pixels can be adjusted by a slider. During the adjustment of the ink aperture ratio, the corresponding RGB matrix can be automatically generated without manual calculation and can be obtained directly.

[0125] In some embodiments, display control of electrowetting electronic paper is performed based on a first display primary color matrix, a second display primary color matrix, and a third display primary color matrix, including the following steps:

[0126] The first display color component value of the first dual-layer ink sub-pixel unit is calculated based on the sum of the first color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively.

[0127] The second display color component value of the second double-layer ink sub-pixel unit is calculated based on the sum of the second color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively.

[0128] The third display color component value of the third double-layer ink sub-pixel unit is calculated based on the sum of the third color channel values ​​corresponding to the first display three primary color matrix, the second display three primary color matrix, and the third display three primary color matrix, respectively.

[0129] Display control of electrowetting electronic paper is performed based on the first display color component value, the second display color component value, and the third display color component value.

[0130] Specifically, in the embodiments of this application, after calculating the RGB matrices corresponding to the three double-layer ink sub-pixel units respectively, the RGB matrices of the display colors corresponding to the three primary colors of the double-layer ink sub-pixel units can be mixed by addition to form the complete RGB matrix corresponding to the colors displayed by the double-layer ink pixel units.

[0131] Specifically, the first display color component value of the first double-layer ink sub-pixel unit is calculated based on the sum of the first color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix. For example, the RGB matrices corresponding to the red, green, and blue sub-pixels are [77,26,26], [51,128,51], and [28,38,64], respectively. Assuming the color component value corresponding to the red channel is the first color channel value corresponding to the display primary color matrix, the color channel values ​​corresponding to the three sub-pixels are 77, 51, and 28, respectively. The sum of these three values ​​yields the first display color component value (77+51+28) = 156.

[0132] Then, the second display color component value of the second double-layer ink sub-pixel unit can be calculated based on the sum of the second color channel values ​​corresponding to the first, second, and third display primary color matrices. For example, as mentioned earlier, the RGB matrices corresponding to the red, green, and blue sub-pixels are [77,26,26], [51,128,51], and [28,38,64], respectively. Assuming the color component value corresponding to the green channel is the second color channel value corresponding to the display primary color matrix, the color channel values ​​corresponding to the three sub-pixels are 26, 128, and 38, respectively. The sum of these three values ​​yields the second display color component value (26 + 128 + 38) = 192.

[0133] Furthermore, the third display color component value of the third double-layer ink sub-pixel unit can be calculated based on the sum of the third color channel values ​​corresponding to the first, second, and third display primary color matrices. For example, as mentioned earlier, the RGB matrices corresponding to the red, green, and blue sub-pixels are [77,26,26], [51,128,51], and [28,38,64], respectively. Assuming the color component value corresponding to the blue channel is the third color channel value corresponding to the display primary color matrix, the color channel values ​​corresponding to the three sub-pixels are 26, 51, and 64, respectively. The sum of these three values ​​yields the third display color component value (26 + 51 + 64) = 111.

[0134] In some embodiments, display control of electrowetting electronic paper based on a first display color component value, a second display color component value, and a third display color component value includes the following steps:

[0135] Calculate the first product of the preset color mixing ratio and the first display color component value;

[0136] Calculate the second product of the preset color mixing ratio and the second display color component value, and calculate the third product of the preset color mixing ratio and the third display color component value;

[0137] The pixel color matrix of the dual-layer ink pixel unit is calculated based on the sum of the first product, the second product, and the third product, and the display control of the electrowetting electronic paper is performed based on the pixel color matrix.

[0138] In the application embodiment, the first product of the preset color mixing ratio and the first display color component value can be calculated first. Specifically, the preset color mixing ratio can be one-third. Then, the first product of the preset color mixing ratio and the first display color component value can be calculated. According to the aforementioned example, the first display color component value is 156, the second display color component value is 192, and the third display color component value is 111. Then the first product is 156 / 3 = 52.

[0139] Then, the second product of the preset color mixing ratio and the second display color component value can be calculated, and the third product of the preset color mixing ratio and the third display color component value can be calculated. The second product is 192 / 3 = 64, and the third product is 111 / 3 = 37.

[0140] Thus, by combining the first, second, and third products, the RGB values ​​corresponding to each sub-pixel can be obtained, leading to the pixel color matrix of the dual-layer ink pixel unit. As mentioned earlier, the first product is 32, the second product is 64, and the third product is 37, resulting in a final pixel color matrix of [32, 64, 37]. The display control of the dual-layer ink pixel unit can then be performed based on this pixel color matrix. It is understood that the aforementioned examples are for dual-layer ink pixel units in electrowetting electronic paper. The method can be extended to every dual-layer ink pixel unit in electrowetting electronic paper. Each dual-layer ink pixel unit can have its pixel color matrix calculated using the aforementioned method, and the final color can be displayed based on the pixel color matrix.

[0141] This application also provides color mixing results obtained by the display control method for double-layer ink electrowetting electronic paper according to related technologies, and color mixing results obtained by the display control method for double-layer ink electrowetting electronic paper provided in this application. Specifically, please refer to... Figure 10A and Figure 10B , Figure 10A A schematic diagram of the pixel color mixing result provided in this application. Figure 10B This is a schematic diagram of pixel color mixing results provided by related technologies. In these technologies, the maximum color component value is used as the gray base value (e.g., R=200, G=150, B=100, in which case the R channel is the maximum value channel). Then, the sub-pixels of the maximum value channel simultaneously achieve the maximum value (e.g., R=200) and the minimum value (e.g., B=100) in the target RGB matrix. This process is accomplished by adjusting the aperture ratio of the upper and lower layers of ink in this channel. Furthermore, the remaining intermediate values ​​(e.g., G=150) are supplemented separately by the sub-pixels of the channel containing the intermediate value in the target RGB matrix.

[0142] By comparison Figure 10A and Figure 10B It can be concluded that: Figure 10A In the color mixing results, the ink aperture ratio of the double-layer ink sub-pixel unit is greater than 1. Figure 10B The ink aperture ratio of the mid-double-layer ink sub-pixel model, in particular, Figure 10B There is a single sub-pixel channel that is not activated, specifically the green sub-pixel channel. This forcibly closed sub-pixel grid wastes its corresponding effective opening area, which could have been used to reflect light and increase brightness, but instead becomes a non-reflective black area, resulting in a significant decrease in overall brightness. For the entire pixel grid, this greatly reduces the substrate reflection of the light path, leading to a substantial reduction in the brightness of the pixel display. Since the core advantages of reflective displays (such as electrowetting electronic paper) lie in high brightness and sunlight visibility, these are highly dependent on maximizing the utilization of the effective reflective area (i.e., ink aperture ratio). The color display methods in related technologies cannot meet the requirements of reflective display devices.

[0143] This application's embodiment determines the gray base value by using the minimum color component value. Using the minimum value as a common base maximizes the utilization of the reflective area. Then, other color channels are controlled to supplement the color vibrancy and saturation of the pixels, ensuring both brightness and hue accuracy. Furthermore, when processing dark colors, algorithms in related technologies often cause dark hue shifts due to the influence of bright channels, resulting in the loss of details in dark areas. This application's embodiment separates brightness and hue through a minimum value color channel priority algorithm, prioritizing the determination of the basic brightness benchmark for dark areas before superimposing the saturation component. This avoids the technical problem of dark channels being "submerged" by bright channels, effectively preserving the basic brightness of dark areas, effectively enhancing the display effect of reflective display devices (in this application's embodiment, the reflective display device is electrowetting electronic paper), and improving the accuracy of color display.

[0144] Please see Figure 11This application also provides a display control device 1100 for electrowetting electronic paper, which can realize the above-mentioned display control method for double-layer ink electrowetting electronic paper. The device includes:

[0145] The acquisition unit 1110 is used to acquire the target three primary color matrix corresponding to the double-layer ink pixel unit. The target three primary color matrix includes the component values ​​corresponding to the three color channels. Each color channel corresponds to a double-layer ink sub-pixel unit.

[0146] The determining unit 1120 is used to identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and to determine the gray base value corresponding to the three color channels based on the smallest color component value.

[0147] The first calculation unit 1130 calculates the first color component difference of the second color channel based on the difference between the color component value of the second color channel and the gray base value in the target three primary color matrix, and calculates the second color component difference of the third color channel based on the difference between the color component value of the third color channel and the gray base value in the target three primary color matrix.

[0148] The second calculation unit 1140 is used to calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value.

[0149] The third calculation unit 1150 is used to calculate the second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel based on the first color component difference and the preset color component value, and to calculate the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel based on the second color component difference and the preset color component value.

[0150] The display control unit 1160 is used to control the display of electrowetting electronic paper based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

[0151] The specific implementation of the display control device for electrowetting electronic paper is basically the same as the specific embodiment of the display control method for double-layer ink electrowetting electronic paper described above, and will not be repeated here.

[0152] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described display control method for electrowetting electronic paper with double-layer ink. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0153] Please see Figure 12 , Figure 12 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes:

[0154] The processor 1201 can be implemented using a general-purpose central processing unit (CPU), microprocessor, application specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0155] The memory 1202 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 1202 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1202 and is called and executed by the processor 1201 to execute the display control method for double-layer ink electrowetting electronic paper according to the embodiments of this application.

[0156] The input / output interface 1203 is used to implement information input and output;

[0157] The communication interface 1204 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0158] Bus 1205 transmits information between various components of the device (e.g., processor 1201, memory 1202, input / output interface 1203, and communication interface 1204);

[0159] The processor 1201, memory 1202, input / output interface 1203 and communication interface 1204 are connected to each other within the device via bus 1205.

[0160] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described display control method for electrowetting electronic paper with double-layer ink.

[0161] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0162] The display control method and related equipment for double-layer ink electrowetting electronic paper provided in this application embodiment generate a unified gray base value by identifying the minimum color component value in the target three primary color matrix, ensuring that the three color channels share the same dark area brightness reference, thereby improving the detail performance and color consistency of the reflective display in low-light environments. This application embodiment provides a method for calculating the device parameters of electrowetting electronic paper based on given color parameters. The ink aperture ratio is calculated independently based on the difference between the color component value of each channel and the gray base value, decoupling the nonlinear mixing problem into a linear superposition problem of gray base value and color saturation compensation, avoiding color shift problems caused by optical crosstalk in multi-layer ink structures. In this way, the three double-layer ink sub-pixel units collaboratively participate in color synthesis (the first color channel generates the brightness base, and the second and third color channels compensate for the color saturation difference), thereby maximizing the use of the reflectivity of all sub-pixels and improving the color accuracy of the electrowetting electronic paper display.

[0163] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0164] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0165] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0166] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0167] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application 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 so that the embodiments of this application described herein can be implemented in orders other than those illustrated or 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.

[0168] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0169] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0170] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0171] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0172] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0173] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A display control method for double-layer ink electrowetting electronic paper, characterized in that, The pixel model of the electrowetting electronic paper includes multiple double-layer ink pixel units, each of the double-layer ink pixel units including three double-layer ink sub-pixel units arranged side by side, and the method includes: Obtain the target three primary color matrix corresponding to the dual-layer ink pixel unit. The target three primary color matrix includes component values ​​corresponding to three color channels. Each color channel corresponds to a dual-layer ink sub-pixel unit. Identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and determine the gray base value corresponding to the three color channels based on the smallest color component value; The first color component difference of the second color channel is calculated based on the difference between the color component value of the second color channel in the target three primary color matrix and the gray base value, and the second color component difference of the third color channel is calculated based on the difference between the color component value of the third color channel in the target three primary color matrix and the gray base value. Calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value; The second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel is calculated based on the first color component difference and the preset color component value, and the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel is calculated based on the second color component difference and the preset color component value. The display control of the electrowetting electronic paper is based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

2. The method according to claim 1, characterized in that, Each of the dual-layer ink sub-pixel units includes an upper layer of colored ink and a lower layer of black ink, wherein the opening direction of the upper layer of colored ink and the lower layer of black ink is the same.

3. The method according to claim 2, characterized in that, The first dual-layer ink sub-pixel unit includes a first upper layer primary color ink and a first lower layer black ink. The step of calculating the first ink aperture ratio of the first dual-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and a preset color component value includes: Calculate the first lower layer ink aperture ratio corresponding to the first lower layer black ink based on the gray base value and the preset color component value; The first upper layer ink aperture ratio corresponding to the first upper layer primary color ink is determined based on the first lower layer ink aperture ratio. The first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel is determined based on the first upper layer ink aperture ratio and the first lower layer ink aperture ratio.

4. The method according to claim 3, characterized in that, The step of calculating the first lower layer ink aperture ratio corresponding to the first lower layer black ink based on the gray base value and the preset color component value includes: Calculate the ratio of the gray base value to the preset color component value; The first lower layer ink aperture ratio corresponding to the first lower layer black ink is determined based on the ratio.

5. The method according to claim 1, characterized in that, The display control of the electrowetting electronic paper based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio includes: Calculate the first display three primary color matrix corresponding to the first double-layer ink sub-pixel unit based on the first ink aperture ratio; The second display primary color matrix corresponding to the second double-layer ink sub-pixel unit is calculated based on the second ink aperture ratio, and the third display primary color matrix corresponding to the third double-layer ink sub-pixel unit is calculated based on the third ink aperture ratio. The display control of the electrowetting electronic paper is performed based on the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix.

6. The method according to claim 5, characterized in that, The method of controlling the display of the electrowetting electronic paper based on the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix includes: The first display color component value of the first dual-layer ink sub-pixel unit is calculated based on the sum of the first color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively. The second display color component value of the second double-layer ink sub-pixel unit is calculated based on the sum of the second color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively. The third display color component value of the third double-layer ink sub-pixel unit is calculated based on the sum of the third color channel values ​​corresponding to the first display primary color matrix, the second display primary color matrix, and the third display primary color matrix, respectively. The display control of the electrowetting electronic paper is performed based on the first display color component value, the second display color component value, and the third display color component value.

7. The method according to claim 6, characterized in that, The method of controlling the display of the electrowetting electronic paper based on the first display color component value, the second display color component value, and the third display color component value includes: Calculate the first product of the preset color mixing ratio and the first display color component value; Calculate the second product of the preset color mixing ratio and the second display color component value, and calculate the third product of the preset color mixing ratio and the third display color component value; The pixel color matrix of the dual-layer ink pixel unit is calculated based on the sum of the first product, the second product, and the third product, and the display control of the electrowetting electronic paper is performed based on the pixel color matrix.

8. A display control device for electrowetting electronic paper, characterized in that, The pixel model of the electrowetting electronic paper includes multiple double-layer ink pixel units, each of the double-layer ink pixel units including three double-layer ink sub-pixel units arranged side by side, and the device includes: The acquisition unit is used to acquire the target three primary color matrix corresponding to the dual-layer ink pixel unit. The target three primary color matrix includes component values ​​corresponding to three color channels, and each color channel corresponds to a dual-layer ink sub-pixel unit. The determining unit is used to identify the first color channel corresponding to the smallest color component value in the target three primary color matrix, and to determine the gray base value corresponding to the three color channels based on the smallest color component value; The first calculation unit calculates the first color component difference of the second color channel based on the difference between the color component value of the second color channel in the target three primary color matrix and the gray base value, and calculates the second color component difference of the third color channel based on the difference between the color component value of the third color channel in the target three primary color matrix and the gray base value. The second calculation unit is used to calculate the first ink aperture ratio of the first double-layer ink sub-pixel unit corresponding to the first color channel based on the gray base value and the preset color component value. The third calculation unit is used to calculate the second ink aperture ratio of the second double-layer ink sub-pixel unit corresponding to the second color channel based on the first color component difference and the preset color component value, and to calculate the third ink aperture ratio of the third double-layer ink sub-pixel unit corresponding to the third color channel based on the second color component difference and the preset color component value. The display control unit is used to perform display control on the electrowetting electronic paper based on the first ink aperture ratio, the second ink aperture ratio, and the third ink aperture ratio.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the display control method for double-layer ink electrowetting electronic paper as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the display control method for double-layer ink electrowetting electronic paper as described in any one of claims 1 to 7.

Images