An e-ink screen based on zero-spacing continuous display

Abstract

The present invention relates to the technical field of e-ink screens, and in particular to an e-ink screen based on zero-spacing continuous display, comprising: a display module for continuously displaying static images with zero spacing in the e-ink screen, including an e-ink layer for forming the static image according to the distribution of black and white particles and a TFT substrate for controlling the distribution of the black and white particles by changing the electric field; a driving module connected to the display module, including a storage capacitor for storing the refresh mode of the e-ink screen; a power supply module respectively connected to the display module and the driving module for supplying power to the operation of the e-ink screen; and a control module respectively connected to the display module, the driving module and the power supply module for determining the voltage application period of the e-ink screen according to the screen refresh afterimage rate of the e-ink screen. The present invention improves the display effectiveness of the e-ink screen.

Description

Technical Field

[0001] The present invention relates to the technical field of e-ink screens, and particularly to an e-ink screen based on zero-spacing continuous display. Background Art

[0002] In the prior art, the display effect of e-ink screens is very similar to that of paper books, with high contrast and soft light reflection, providing a clear and natural visual experience in various ambient lights and not easily causing eye fatigue even for long-term viewing. In contrast, electronic devices such as traditional liquid crystal displays (LCDs) and organic light-emitting diode displays (OLEDs) usually use self-luminous methods, which are prone to problems such as dry eyes and fatigue after long-term viewing. E-ink screens have characteristics such as low power consumption, high contrast, and paper-like display, and are widely used in fields such as e-reading devices, electronic tags, smart watches, displays, billboards, display boards, and medical devices.

[0003] Chinese Patent Publication No.: CN110824806A discloses an electronic ink screen and a display device. A specific embodiment of the electronic ink screen includes a common electrode backplane and a driving backplane that are respectively transparent. The driving backplane includes a plurality of pixel units arranged in an array, and a plurality of microcup units corresponding to the plurality of pixel units are provided between the two backplanes; the microcup unit includes a first and a second microcup arranged side by side. The orthographic projection area of the surface of the first microcup close to the driving backplane on the driving backplane is larger than the orthographic projection area of the surface close to the common electrode backplane on the driving backplane, and the second microcup is opposite to the first microcup; at least one of the first microcup and the second microcup includes a plurality of charged first color particles and a plurality of charged second color particles, and the electric property of the first color particles is opposite to that of the second color particles. This embodiment can achieve good double-sided display or transparent display.

[0004] It can be seen that during the long-term use of the electronic ink screen and the display device, the electronic ink screen needs to undergo multiple display switches and the influence of environmental factors, resulting in a gradual decline in the performance of the electronic ink screen, affecting its long-term stability and reliability, and causing problems such as low refresh rate and high afterimage rate of the electronic ink screen. Summary of the Invention

[0005] Therefore, the present invention provides an e-ink screen based on zero-spacing continuous display to overcome the problems that during the long-term use of the electronic ink screen and the display device in the prior art, the electronic ink screen needs to undergo multiple display switches and the influence of environmental factors, resulting in a gradual decline in the performance of the electronic ink screen, affecting its long-term stability and reliability, and causing problems such as low refresh rate and high afterimage rate of the electronic ink screen.

[0006] To achieve the above object, the present invention provides an e-ink screen based on zero-spacing continuous display, including: a display module for continuously displaying static images with zero spacing in the e-ink screen, including an e-ink layer for forming the static image according to the distribution of black and white particles and a TFT substrate for controlling the distribution of the black and white particles by changing the electric field; a driving module connected to the display module, including a driving chip for applying a voltage signal to the pixel points in the e-ink screen to realize the state switching of the pixels and a storage capacitor for storing the refresh mode of the e-ink screen; a power supply module respectively connected to the display module and the driving module for supplying power to the operation of the e-ink screen; a control module respectively connected to the display module, the driving module and the power supply module for determining the voltage application period of the e-ink screen according to the screen refresh afterimage rate of the e-ink screen, or adjusting the refresh mode of the e-ink screen according to the loss rate of the image frames in the e-ink screen, and determining the driving voltage of the driving chip according to the maximum difference in the surface temperature of the e-ink screen.

[0007] Further, the control module is used to determine whether the display effectiveness of the e-ink screen meets the requirements according to the screen refresh afterimage rate of the e-ink screen. If the screen refresh afterimage rate of the e-ink screen is greater than a preset first afterimage rate, it is determined that the display effectiveness of the e-ink screen does not meet the requirements.

[0008] Further, when the screen refresh afterimage rate of the e-ink screen is greater than the preset first afterimage rate and less than or equal to a preset second afterimage rate, the control module initially determines that the storage effectiveness of the storage capacitor does not meet the requirements, and determines whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of the image frames in the e-ink screen.

[0009] Further, when the screen refresh afterimage rate of the e-ink screen is greater than the preset second afterimage rate, the control module increases the voltage application period of the e-ink screen;

[0010] Wherein, the increase amplitude of the voltage application period of the e-ink screen is determined by the difference between the screen refresh afterimage rate of the e-ink screen and the preset second afterimage rate.

[0011] Further, the control module is used to determine whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of the image frames in the e-ink screen. If the loss rate of the image frames in the e-ink screen is greater than a preset first loss rate, it is determined that the storage effectiveness of the storage capacitor does not meet the requirements.

[0012] Further, when the loss rate of the image frames in the e-ink screen is greater than the preset first loss rate and less than or equal to a preset second loss rate, the control module adjusts the refresh mode of the e-ink screen.

[0013] Further, when the loss rate of the image frames in the electronic ink screen is greater than the preset second loss rate, the control module preliminarily determines that the working environment temperature of the electronic ink screen does not meet the requirements, and determines whether the working environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen.

[0014] Further, the refresh mode of the electronic ink screen is adjusted from the global refresh mode to the local refresh mode.

[0015] Further, the control module is used to determine whether the working environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen. If the maximum difference in the surface temperature of the electronic ink screen is greater than the preset difference, it is determined that the working environment temperature of the electronic ink screen does not meet the requirements, and the driving voltage of the driving chip is reduced.

[0016] Further, the reduction amplitude of the driving voltage of the driving chip is determined by the difference between the maximum difference in the surface temperature of the electronic ink screen and the preset difference.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows. The ink screen of the present invention adjusts the voltage application period of the electronic ink screen according to the screen refresh afterimage rate of the electronic ink screen. Since dust may carry static electricity into the transparent plastic film during use, it may cause changes in the electric field, resulting in incorrect particle changes. By increasing the voltage application period of the electronic ink screen, more sufficient time can be provided for the black and white particles to respond to the electric field changes, enabling them to move to the target position more accurately and completely. When the screen is refreshed, the residual phenomenon caused by the untimely arrival of the black and white particles can be reduced, thereby effectively reducing the afterimage rate and improving the clarity and accuracy of the screen display. The refresh mode of the electronic ink screen is adjusted according to the image frame loss rate of the electronic ink screen. After long-term use, the titanium dioxide of the storage capacitor will gradually age, resulting in changes in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and an inability to stably store pixel information for a long time, thereby affecting the display effect of the electronic ink screen. By adjusting the global refresh mode to a local refresh mode, the number of charge and discharge cycles of the storage capacitor can be reduced, the capacitor aging speed can be decreased, and thus the storage effectiveness can be improved, and the time for the capacitor to stably store charges can be extended. The driving voltage of the driving chip is determined according to the maximum difference in the surface temperature of the electronic ink screen. Since frequent screen refreshing will cause the pixels of the electronic ink screen to continuously perform charge and discharge operations, the higher the refresh frequency, the greater the energy consumption per unit time and the more heat generated, which will further increase the working environment temperature, resulting in a decrease in image quality and an aggravation of the afterimage phenomenon. By reducing the voltage of the driving circuit, the power consumption of the driving circuit will be reduced, and the electric field intensity applied to the electronic ink screen will be relatively weakened, which will reduce the energy consumed by the charge migration and the movement of black and white particles inside the electronic ink screen, and thus reduce the heat generation.

[0018] Further, the ink screen of the present invention adjusts the voltage application period of the electronic ink screen by setting a preset first afterimage rate and a preset second afterimage rate. Since dust may carry static electricity into the transparent plastic film during use, it may cause changes in the electric field, resulting in incorrect particle changes. By increasing the voltage application period of the electronic ink screen, more sufficient time can be provided for the black and white particles to respond to the electric field changes, enabling them to move to the target position more accurately and completely. When the screen is refreshed, the residual phenomenon caused by the untimely arrival of the black and white particles can be reduced, thereby effectively reducing the afterimage rate and improving the clarity and accuracy of the screen display, and improving the display effectiveness of the electronic ink screen.

[0019] Furthermore, by setting a preset first loss rate and a preset second loss rate, the ink screen of the present invention adjusts the storage effectiveness of the storage capacitor. After long-term use, the titanium dioxide of the storage capacitor gradually ages, resulting in a change in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and an inability to stably store pixel information for a long time, thereby affecting the display effect of the electronic ink screen. By adjusting the global refresh mode to a local refresh mode, the charge and discharge times of the storage capacitor can be reduced, the aging speed of the capacitor can be decreased, thereby improving the storage effectiveness, extending the time for the capacitor to stably store charges, and further improving the display effectiveness of the electronic ink screen.

[0020] Furthermore, by setting a preset difference amount, the ink screen of the present invention adjusts the driving voltage of the driving chip. Since frequent screen refreshing causes the pixels of the electronic ink screen to continuously perform charge and discharge operations, the higher the refresh frequency, the greater the energy consumption per unit time and the more heat generated, thereby increasing the working environment temperature, resulting in a decrease in image quality and an aggravation of the ghosting phenomenon. By reducing the voltage of the driving circuit, the power consumption of the driving circuit is reduced, and the electric field strength applied to the electronic ink screen is relatively weakened, which reduces the energy consumed by the charge migration and the movement of black and white particles inside the electronic ink screen, thereby reducing the heat generation and further improving the display effectiveness of the electronic ink screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the ink screen based on zero-spacing continuous display according to an embodiment of the present invention;

[0022] Figure 2 is a block diagram of the overall structure of the ink screen based on zero-spacing continuous display according to an embodiment of the present invention;

[0023] Figure 3 is a logic flowchart of the process of determining the voltage application period of the electronic ink screen for the ink screen based on zero-spacing continuous display according to an embodiment of the present invention;

[0024] Figure 4 is a logic flowchart of the process of determining the refresh mode of the electronic ink screen for the ink screen based on zero-spacing continuous display according to an embodiment of the present invention;

[0025] The reference numerals are as follows: 1 - diffusive reflection layer, 2 - electronic ink layer, 3 - polarized light layer, 4 - light source, 5 - TFT substrate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives and advantages of the present invention clearer and more understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and do not limit the protection scope of the present invention.

[0028] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0029] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 as shown, which are respectively the overall structural schematic diagram, overall structural block diagram, logical flow chart for determining the voltage application period of the electronic ink screen, and logical flow chart for determining the refresh mode process of the electronic ink screen in the embodiments of the present invention. An electronic ink screen based on zero-spacing continuous display of the present invention includes:

[0031] A display module for continuously displaying static images with zero spacing in the electronic ink screen, including an electronic ink layer 2 for forming the static image according to the distribution of black and white particles and a TFT substrate 5 for controlling the distribution of the black and white particles by changing the electric field;

[0032] A driving module connected to the display module, including a driving chip for applying a voltage signal to the pixel points in the electronic ink screen to realize the state switching of the pixels and a storage capacitor for storing the refresh mode of the electronic ink screen;

[0033] A power supply module connected to the display module and the driving module respectively for supplying power to the operation of the electronic ink screen;

[0034] A control module, which is respectively connected to the display module, the driving module, and the power supply module, is configured to determine the voltage application period of the electronic ink screen according to the screen refresh afterimage rate of the electronic ink screen, or adjust the refresh mode of the electronic ink screen according to the loss rate of image frames in the electronic ink screen, and determine the driving voltage of the driving chip according to the maximum difference in the surface temperature of the electronic ink screen.

[0035] Specifically, the display module further includes:

[0036] A light source 4, which is connected to the TFT substrate 5 to provide light;

[0037] A polarization light layer 3, which is connected to the light source 4 to filter and adjust the polarization direction of light;

[0038] A diffuse reflection layer 1, which is connected to the electronic ink layer 2 to evenly scatter the light emitted by the light source 4 to the entire display area.

[0039] Specifically, the black particles include carbon powder, iron oxide, and artificial melanin, and the white particles include titanium dioxide, polystyrene, and iron oxide.

[0040] Specifically, the state switching of the pixel includes black and white conversion and color switching.

[0041] Specifically, the refresh mode includes a global refresh mode, a local refresh mode, and a fast refresh mode.

[0042] In implementation, the ink screen of the present invention adjusts the voltage application period of the electronic ink screen according to the screen refresh afterimage rate of the electronic ink screen. Since dust may carry static electricity into the transparent plastic film during use, it may cause changes in the electric field, resulting in incorrect particle changes. By increasing the voltage application period for the electronic ink screen, more sufficient time can be provided for black and white particles to respond to the electric field change, enabling them to move to the target position more accurately and completely. When the screen is refreshed, the residual phenomenon caused by the untimely arrival of black and white particles can be reduced, thereby effectively reducing the afterimage rate and improving the clarity and accuracy of the screen display. The refresh mode of the electronic ink screen is adjusted according to the loss rate of image frames in the electronic ink screen. After long-term use, the titanium dioxide of the storage capacitor will gradually age, resulting in changes in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and an inability to stably store pixel information for a long time, thereby affecting the display effect of the electronic ink screen. By adjusting the global refresh mode to the local refresh mode, the number of charge and discharge operations of the storage capacitor can be reduced, the aging speed of the capacitor can be decreased, thereby improving the storage effectiveness and extending the time for the capacitor to stably store charges. The driving voltage of the driving chip is determined according to the maximum difference in the surface temperature of the electronic ink screen. Since frequent screen refreshing will cause the pixels of the electronic ink screen to continuously perform charge and discharge operations, the higher the refresh frequency, the greater the energy consumption per unit time, the more heat generated, and thus the working environment temperature will increase, resulting in a decrease in image quality and an aggravation of the afterimage phenomenon. By reducing the voltage of the driving circuit, the power consumption of the driving circuit will be reduced, and the electric field intensity applied to the electronic ink screen will be relatively weakened. This will reduce the energy consumed by the charge migration and the movement of black and white particles inside the electronic ink screen, and thus the heat generation will be reduced, further improving the display effectiveness of the electronic ink screen.

[0043] Specifically, the control module is used to determine whether the display effectiveness of the electronic ink screen meets the requirements according to the screen refresh afterimage rate of the electronic ink screen. If the screen refresh afterimage rate of the electronic ink screen is greater than the preset first afterimage rate, it is determined that the display effectiveness of the electronic ink screen does not meet the requirements.

[0044] Specifically, when the screen refresh afterimage rate of the electronic ink screen is greater than the preset first afterimage rate and less than or equal to the preset second afterimage rate, the control module preliminarily determines that the storage effectiveness of the storage capacitor does not meet the requirements, and determines whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of image frames in the electronic ink screen.

[0045] It can be understood that the three intervals divided by the preset first afterimage rate and the preset second afterimage rate respectively correspond to three situations:

[0046] The first interval is that the screen refresh afterimage rate of the electronic ink screen is less than or equal to a preset first afterimage rate. The corresponding situation is that it is determined that the display effectiveness of the electronic ink screen meets the requirements;

[0047] The second interval is that the screen refresh afterimage rate of the electronic ink screen is greater than the preset first afterimage rate and less than or equal to the preset second afterimage rate. The corresponding situation is that after long-term use, the titanium dioxide of the storage capacitor will gradually age, resulting in a change in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and the inability to stably store pixel information for a long time, thereby affecting the display effect of the ink screen;

[0048] The third interval is that the screen refresh afterimage rate of the electronic ink screen is greater than the preset second afterimage rate. The corresponding situation is that during use, dust may carry static electricity into the transparent plastic film, which may cause a change in the electric field and incorrect particle changes.

[0049] In implementation, the generally selected range of the preset first afterimage rate is [0.9%, 1.1%], and the generally selected range of the preset second afterimage rate is [1.2%, 1.4%].

[0050] Preferably, the preferred embodiment of the preset first afterimage rate is 1%, and the preferred embodiment of the preset second afterimage rate is 1.3%.

[0051] Specifically, the screen refresh afterimage rate of the electronic ink screen is the degree of residual of the previous frame of image when the screen refreshes the image, that is, the ratio of the residual pixels to the original pixels.

[0052] Specifically, the residual pixels are the pixel points in which some pixel information of the previous frame of image is not completely cleared and thus remains in the current image frame.

[0053] Specifically, the original pixels are all the pixel points in which the image is completely displayed in the previous frame of image.

[0054] Specifically, the control module is used to increase the voltage application period of the electronic ink screen when the screen refresh afterimage rate of the electronic ink screen is greater than the preset second afterimage rate;

[0055] Among them, the increase amplitude of the voltage application period of the electronic ink screen is determined by the difference between the screen refresh afterimage rate of the electronic ink screen and the preset second afterimage rate.

[0056] Specifically, when the difference between the screen refresh afterimage rate of the electronic ink screen and the preset second afterimage rate is within 0.5%, the voltage application period of the electronic ink screen is increased to 1.1 times the original; when the difference between the screen refresh afterimage rate of the electronic ink screen and the preset second afterimage rate exceeds 0.5%, on the basis of increasing to 1.1 times the original, for every additional 0.2% exceeded, the voltage application period of the electronic ink screen is increased by 5 milliseconds. For example, if the difference between the screen refresh afterimage rate of the electronic ink screen and the preset second afterimage rate is 0.9% and the current voltage application period of the electronic ink screen is 100 milliseconds, the increased voltage application period of the electronic ink screen is 100×1.1 + 5×2 = 120 milliseconds.

[0057] In implementation, by setting the preset first afterimage rate and the preset second afterimage rate, the voltage application period of the electronic ink screen of the present invention is adjusted. Since dust may carry static electricity into the transparent plastic film during use, it may cause changes in the electric field, resulting in incorrect particle changes. By increasing the voltage application period of the electronic ink screen, more sufficient time can be provided for the black and white particles to respond to the electric field change, enabling them to move to the target position more accurately and completely. When the screen is refreshed, the residual phenomenon caused by the untimely arrival of the black and white particles can be reduced, thereby effectively reducing the afterimage rate, improving the clarity and accuracy of the screen display, and enhancing the display effectiveness of the electronic ink screen.

[0058] Specifically, the control module is used to obtain the loss rate of image frames in the electronic ink screen and determine whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of image frames in the electronic ink screen. If the loss rate of image frames in the electronic ink screen is greater than the preset first loss rate, it is determined that the storage effectiveness of the storage capacitor does not meet the requirements.

[0059] Specifically, when the loss rate of image frames in the electronic ink screen is greater than the preset first loss rate and less than or equal to the preset second loss rate, the control module is used to adjust the refresh mode of the electronic ink screen.

[0060] Specifically, when the loss rate of image frames in the electronic ink screen is greater than the preset second loss rate, the control module initially determines that the working environment temperature of the electronic ink screen does not meet the requirements, and determines whether the working environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen.

[0061] It can be understood that the three intervals divided by the preset first loss rate and the preset second loss rate respectively correspond to three situations:

[0062] The first interval is that the loss rate of image frames in the electronic ink screen is less than or equal to the preset first loss rate, and the corresponding situation is: it is determined that the storage effectiveness of the storage capacitor meets the requirements;

[0063] The second interval is that the loss rate of image frames in the electronic ink screen is greater than the preset first loss rate and less than or equal to the preset second loss rate. The corresponding situation is as follows: After long-term use, the titanium dioxide of the storage capacitor will gradually age, resulting in a change in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and an inability to stably store pixel information for a long time, thereby affecting the display effect of the electronic ink screen.

[0064] The third interval is when the loss rate of image frames in the electronic ink screen is greater than the preset second loss rate. The corresponding situation is as follows: Since frequent screen refreshing will cause the pixels of the electronic ink screen to continuously charge and discharge, the higher the refresh frequency, the greater the energy consumption per unit time, the more heat generated, and thus the working environment temperature rises, resulting in a decline in image quality and an aggravation of the ghosting phenomenon.

[0065] In implementation, the generally selected range of the preset first loss rate is [0.3%, 0.5%], and the generally selected range of the preset second loss rate is [0.6%, 0.8%].

[0066] Preferably, the preferred embodiment of the preset first loss rate is 0.4%, and the preferred embodiment of the preset second loss rate is 0.7%.

[0067] Specifically, the loss rate of image frames in the electronic ink screen is the ratio of the number of lost image frames to the total number of image frames.

[0068] Specifically, the refresh mode of the electronic ink screen is adjusted from the global refresh mode to the local refresh mode.

[0069] Specifically, the global refresh mode is an operation of completely refreshing the entire screen, and the local refresh mode is to only refresh the part of the screen that needs to be updated.

[0070] In implementation, by setting the preset first loss rate and the preset second loss rate in the ink screen of the present invention, the storage effectiveness of the storage capacitor is adjusted. After long-term use, the titanium dioxide of the storage capacitor will gradually age, resulting in a change in the capacitance of the capacitor, an increase in the leakage current, a decrease in the ability of the capacitor to store charges, and an inability to stably store pixel information for a long time, thereby affecting the display effect of the electronic ink screen. By adjusting the global refresh mode to the local refresh mode, the number of charge and discharge times of the storage capacitor can be reduced, the aging speed of the capacitor can be lowered, thereby improving the storage effectiveness, prolonging the time for the capacitor to stably store charges, and further improving the display effectiveness of the electronic ink screen.

[0071] Specifically, the control module is used to obtain the surface temperature of the electronic ink screen in several detections, calculate the maximum difference in the surface temperature of the electronic ink screen, and determine whether the working environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen. If the maximum difference in the surface temperature of the electronic ink screen is greater than the preset difference, it is determined that the working environment temperature of the electronic ink screen does not meet the requirements, and the driving voltage of the driving chip is reduced.

[0072] It can be understood that the two intervals divided by the preset difference correspond to two situations respectively:

[0073] The first interval is that the maximum difference in the surface temperature of the electronic ink screen in several detections is less than or equal to the preset difference, and the corresponding situation is: it is determined that the working environment temperature of the electronic ink screen meets the requirements;

[0074] The second interval is that the maximum difference in the surface temperature of the electronic ink screen is greater than the preset difference, and the corresponding situation is: since frequent screen refreshing will cause the pixels of the electronic ink screen to continuously perform charge and discharge operations, the higher the refresh frequency, the greater the energy consumption per unit time, the more heat is generated, which in turn causes the working environment temperature to rise, resulting in a decrease in image quality and an aggravation of the ghosting phenomenon.

[0075] In practice, the generally selected range of the preset difference is [2°C, 3°C].

[0076] Preferably, the preferred embodiment of the preset difference is 2.5°C.

[0077] Specifically, the reduction amplitude of the driving voltage of the driving chip is determined by the difference between the maximum difference in the surface temperature of the electronic ink screen and the preset difference.

[0078] Specifically, when the difference between the maximum difference in the surface temperature of the electronic ink screen and the preset difference is within 0.2°C, the driving voltage of the driving chip is reduced to 0.9 times the original; when the difference between the maximum difference in the surface temperature of the electronic ink screen and the preset difference exceeds 0.2°C, on the basis of reducing to 0.9 times the original, for every 0.2°C exceeded, the driving voltage of the driving chip is reduced by 1V. For example, when the difference between the maximum difference in the surface temperature of the electronic ink screen and the preset difference is 0.6°C and the current driving voltage of the driving chip is 20V, the reduced driving voltage of the driving chip is 20×0.9 - 1×2 = 16V.

[0079] In implementation, the ink screen of the present invention adjusts the driving voltage of the driving chip by setting a preset difference amount. Since frequent screen refreshing will cause the pixels of the electronic ink screen to continuously perform charge and discharge operations, the higher the refresh frequency, the greater the energy consumption per unit time, and the more heat is generated, which in turn causes the working environment temperature to rise, resulting in a decrease in image quality and an aggravation of the ghosting phenomenon. By reducing the voltage of the driving circuit, the power consumption of the driving circuit will be reduced, and the electric field intensity applied to the electronic ink screen will be relatively weakened. This will reduce the energy consumed by the charge migration and the movement of black and white particles inside the electronic ink screen, and thus reduce the heat generation, further improving the display effectiveness of the electronic ink screen.

[0080] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. An e-ink screen based on zero-spacing continuous display, comprising: A display module for continuously displaying static images with zero spacing on the e-ink screen, including an e-ink layer for forming the static image according to the distribution of black and white particles and a TFT substrate for controlling the distribution of the black and white particles by changing the electric field; A driving module connected to the display module, including a driving chip for applying a voltage signal to the pixel points in the e-ink screen to achieve the state switching of the pixels and a storage capacitor for storing the refresh mode of the e-ink screen; A power supply module connected to the display module and the driving module respectively for supplying power to the operation of the e-ink screen; A control module connected to the display module, the driving module and the power supply module respectively; The control module is used to determine whether the display effectiveness of the e-ink screen meets the requirements according to the screen refresh afterimage rate of the e-ink screen. If the screen refresh afterimage rate of the e-ink screen is greater than the preset first afterimage rate, it is determined that the display effectiveness of the e-ink screen does not meet the requirements; When the screen refresh afterimage rate of the e-ink screen is greater than the preset first afterimage rate and less than or equal to the preset second afterimage rate, the control module preliminarily determines that the storage effectiveness of the storage capacitor does not meet the requirements, and determines whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of the image frames in the e-ink screen. When the screen refresh afterimage rate of the e-ink screen is greater than the preset second afterimage rate, the voltage application period of the e-ink screen is increased; The control module is used to determine whether the storage effectiveness of the storage capacitor meets the requirements according to the loss rate of the image frames in the e-ink screen. If the loss rate of the image frames in the e-ink screen is greater than the preset first loss rate, it is determined that the storage effectiveness of the storage capacitor does not meet the requirements; When the loss rate of the image frames in the e-ink screen is greater than the preset first loss rate and less than or equal to the preset second loss rate, the control module adjusts the refresh mode of the e-ink screen; When the loss rate of the image frames in the e-ink screen is greater than the preset second loss rate, it is preliminarily determined that the working environment temperature of the e-ink screen does not meet the requirements, and it is determined whether the working environment temperature of the e-ink screen meets the requirements according to the maximum difference in the surface temperature of the e-ink screen. If the maximum difference in the surface temperature of the e-ink screen is greater than the preset difference, it is determined that the working environment temperature of the e-ink screen does not meet the requirements, and the driving voltage of the driving chip is reduced.

2. The ink screen based on zero-spacing continuous display according to claim 1, wherein The increase amplitude of the voltage application period of the e-ink screen is determined by the difference between the screen refresh afterimage rate of the e-ink screen and the preset second afterimage rate.

3. The ink screen based on zero-spacing continuous display according to claim 2, characterized in that, The refresh mode of the e-ink screen is adjusted from the global refresh mode to the local refresh mode.

4. The ink screen based on zero-spacing continuous display according to claim 3, wherein The reduction amplitude of the driving voltage of the driving chip is determined by the difference between the maximum difference in the surface temperature of the e-ink screen and the preset difference.

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