Ink screen based on zero-spacing continuous display

Abstract

The invention relates to the technical field of ink screens, in particular to an ink screen based on zero-spacing continuous display, which comprises a display module used for continuously displaying static images in an electronic ink screen in a zero-spacing manner, the electronic ink layer is used for forming the static image according to the distribution of black and white particles, and the TFT substrate is used for controlling the distribution of the black and white particles by changing an electric field; the driving module is connected with the display module and comprises a storage capacitor used for storing a refreshing mode of the electronic ink screen; the power supply module is respectively connected with the display module and the driving module and is used for supplying power to the work of the electronic ink screen; and the control module is respectively connected with the display module, the driving module and the power supply module, and is used for determining the voltage application period of the electronic ink screen according to the screen refreshing ghost rate of the electronic ink screen. The display effectiveness of the electronic ink screen is improved.

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 close to that of paper books, with high contrast and soft light reflection, providing a clear and natural visual experience under various ambient lights and not easily causing eye fatigue even after 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, and long-term viewing is likely to cause problems such as dry and fatigued eyes. E-ink screens have the characteristics of 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 transparent common electrode backplane and a driving backplane, the driving backplane includes a plurality of pixel units arranged in an array, and a plurality of microcup units respectively 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 area of the surface of the first microcup close to the driving backplane projected onto the driving backplane is larger than the area of the surface of the first microcup close to the common electrode backplane projected onto 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 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 ghosting 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 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 ghosting 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 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 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 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.

[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; 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.

[0010] 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.

[0011] 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.

[0012] Further, the control module is configured to preliminarily determine that the operating environment temperature of the electronic ink screen does not meet the requirements when the loss rate of the image frames in the electronic ink screen is greater than the preset second loss rate, and determine whether the operating environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen.

[0013] Further, the refresh mode of the electronic ink screen is adjusted from the global refresh mode to the local refresh mode.

[0014] Further, the control module is configured to determine whether the operating 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 operating environment temperature of the electronic ink screen does not meet the requirements, and the driving voltage of the driving chip is reduced.

[0015] 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.

[0016] 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 loss rate of the 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 charge and discharge times of the storage capacitor can be reduced, the aging speed of the capacitor can be lowered, 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.

[0017] 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.

[0018] Furthermore, the e-ink screen of the present invention adjusts the storage effectiveness of the storage capacitor by setting a preset first loss rate and a preset second loss rate. 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 e-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 e-ink screen.

[0019] Furthermore, the e-ink screen of the present invention adjusts the driving voltage of the driving chip by setting a preset difference amount. Since frequently refreshing the screen will cause the pixels of the e-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 ghosting phenomenon. By reducing the voltage of the driving circuit, the power consumption of the driving circuit will be reduced, and the electric field strength applied to the e-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 e-ink screen, thereby reducing the heat generation and further improving the display effectiveness of the e-ink screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the e-ink screen based on zero-spacing continuous display according to an embodiment of the present invention; Figure 2 is a block diagram of the overall structure of the e-ink screen based on zero-spacing continuous display according to an embodiment of the present invention; Figure 3 is a logic flowchart of the process of determining the voltage application period of the e-ink screen based on zero-spacing continuous display according to an embodiment of the present invention; Figure 4 is a logic flowchart of the process of determining the refresh mode of the e-ink screen based on zero-spacing continuous display according to an embodiment of the present invention; The reference numerals are as follows: 1 - diffusive reflection layer, 2 - e-ink layer, 3 - polarization layer, 4 - light source, 5 - TFT substrate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] 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.

[0022] 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 principles of the present invention and do not limit the protection scope of the present invention.

[0023] 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 should not be construed as a limitation of the present invention.

[0024] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, 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.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 as shown, which are respectively the overall structure schematic diagram, the overall structure block diagram, the logic flow chart for determining the voltage application period of the electronic ink screen, and the logic 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: A display module for continuously displaying static images with zero spacing on 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; 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; A power supply module respectively connected to the display module and the driving module for supplying power to the operation of the electronic 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 electronic ink screen according to the screen refresh afterimage rate of the electronic ink screen, or adjusting the refresh mode of the electronic ink screen according to the loss rate of the image frames in the electronic ink screen, and determining the driving voltage of the driving chip according to the maximum difference in the surface temperature of the electronic ink screen.

[0026] Specifically, the display module further includes: A light source 4, which is connected to the TFT substrate 5 to provide light; A polarized light layer 3, which is connected to the light source 4 to filter and adjust the polarization direction of light; 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.

[0027] Specifically, the black particles include toner, iron oxide, and artificial melanin, and the white particles include titanium dioxide, polystyrene, and iron oxide.

[0028] Specifically, the state switching of the pixel includes black-and-white conversion and color switching.

[0029] Specifically, the refresh modes include a global refresh mode, a local refresh mode, and a fast refresh mode.

[0030] 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 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 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 and an increase in the leakage current, which will reduce the ability of the capacitor to store charges and affect the display effect of the electronic ink screen. By adjusting the global refresh mode to the local refresh mode, the charge and discharge times of the storage capacitor can be reduced, and the aging speed of the capacitor can be lowered, 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 and the more heat generated, which will increase the working environment temperature and cause a decline 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 black-and-white particle movement inside the electronic ink screen, and thus reduce the heat generation, further improving the display effectiveness of the electronic ink screen.

[0031] 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.

[0032] 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 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 electronic ink screen.

[0033] 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: The first interval is that the screen refresh afterimage rate of the electronic ink screen is less than or equal to the preset first afterimage rate, and the corresponding situation is: it is determined that the display effectiveness of the electronic ink screen meets the requirements; 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, and the corresponding situation is: 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 ink screen; The third interval is that the screen refresh afterimage rate of the electronic ink screen is greater than the preset second afterimage rate, and the corresponding situation is: 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.

[0034] 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%].

[0035] 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%.

[0036] 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.

[0037] Specifically, the residual pixels are the pixel points in which part of the pixel information of the previous frame of image is not completely cleared and remains in the current image frame.

[0038] Specifically, the original pixels are all the pixel points where the image is completely displayed in the previous frame of image.

[0039] Specifically, when the screen refresh afterimage rate of the electronic ink screen is greater than the preset second afterimage rate, the control module is used to increase the voltage application period of the electronic ink screen; Wherein, 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.

[0040] 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.

[0041] In implementation, by setting the preset first afterimage rate and the preset second afterimage rate, the ink screen of the present invention adjusts the voltage application period 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 change, enabling them to move to the target position more accurately and completely. When the screen is refreshed, the residual phenomenon caused by the black and white particles not arriving in time 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.

[0042] 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.

[0043] 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.

[0044] Specifically, when the loss rate of image frames in the electronic ink screen is greater than the preset second loss rate, the control module preliminarily determines that the operating environment temperature of the electronic ink screen does not meet the requirements, and determines whether the operating environment temperature of the electronic ink screen meets the requirements according to the maximum difference in the surface temperature of the electronic ink screen.

[0045] 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: 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; 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, and the corresponding situation is: 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; The third interval is when the loss rate of image frames in the electronic ink screen is greater than the preset second loss rate, 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 generated, and thus the operating environment temperature rises, resulting in a decline in image quality and an aggravation of the ghosting phenomenon.

[0046] 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%].

[0047] 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%.

[0048] 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.

[0049] Specifically, the refresh mode of the electronic ink screen is adjusted from the global refresh mode to the local refresh mode.

[0050] Specifically, the global refresh mode is an operation to completely refresh the entire screen, and the local refresh mode is to only refresh the part of the screen that needs to be updated.

[0051] In implementation, the e-ink screen of the present invention adjusts the storage effectiveness of the storage capacitor by setting a preset first loss rate and a preset second loss rate. 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 e-ink screen. By adjusting the global refresh mode to the local refresh mode, the charge and discharge times of the storage capacitor can be reduced, the aging speed of the capacitor can be decreased, so as to improve the storage effectiveness, extend the time for the capacitor to stably store charges, and further improve the display effectiveness of the e-ink screen.

[0052] Specifically, the control module is used to obtain the surface temperature of the e-ink screen in several detections, calculate the maximum difference amount of the surface temperature of the e-ink screen, and determine whether the working environment temperature of the e-ink screen meets the requirements according to the maximum difference amount of the surface temperature of the e-ink screen. If the maximum difference amount of the surface temperature of the e-ink screen is greater than the preset difference amount, 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.

[0053] It can be understood that the two intervals divided by the preset difference amount respectively correspond to two situations: The first interval is that the maximum difference amount of the surface temperature of the e-ink screen in several detections is less than or equal to the preset difference amount, and the corresponding situation is: it is determined that the working environment temperature of the e-ink screen meets the requirements; The second interval is that the maximum difference amount of the surface temperature of the e-ink screen is greater than the preset difference amount, and the corresponding situation is: since frequently refreshing the screen will cause the pixels of the e-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 will further increase the working environment temperature, resulting in a decrease in image quality and an aggravation of the ghosting phenomenon.

[0054] In implementation, the generally selected range of the preset difference amount is [2°C, 3°C].

[0055] Preferably, the preferred embodiment of the preset difference amount is 2.5°C.

[0056] Specifically, the reduction amplitude of the driving voltage of the driving chip is determined by the difference between the maximum difference amount of the surface temperature of the e-ink screen and the preset difference amount.

[0057] 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 being reduced to 0.9 times the original, for every 0.2 °C exceeded, the driving voltage of the driving chip is reduced by 1 V. 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 20 V, the driving voltage of the reduced driving chip is 20×0.9 - 1×2 = 16 V.

[0058] In implementation, the ink screen of the present invention adjusts the driving voltage of the driving chip by setting a preset difference. Since frequently refreshing the screen 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 strength 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, further improving the display effectiveness of the electronic ink screen.

[0059] 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 ink screen based on zero-spacing continuous display, characterized in that: include: A display module, used for continuously displaying a static image in an electronic ink screen with zero spacing, comprising an electronic 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 an electric field; A driving module connected to the display module, comprising a driving chip for applying a voltage signal to a pixel point in the electronic ink screen to switch the pixel state and a storage capacitor for storing a refresh mode of the electronic ink screen; A power module, which is connected to the display module and the driving module respectively, and is used to supply power to the electronic ink screen; A control module is respectively connected to the display module, the driving module and the power module, and is used to determine the voltage application period of the electronic ink screen according to the screen refresh afterimage rate of the electronic ink screen, or to adjust the refresh mode of the electronic ink screen according to the image frame loss rate in the electronic ink screen, and to determine the driving voltage of the driving chip according to the maximum difference in surface temperature of the electronic ink screen.

2. The ink screen based on zero-spacing continuous display according to claim 1, characterized in that: The control module is used to determine whether the display validity of the electronic ink screen meets the requirements based on 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 validity of the electronic ink screen does not meet the requirements.

3. The ink screen based on zero-spacing continuous display according to claim 2, characterized in that: The control module is used to preliminarily determine that the storage effectiveness of the storage capacitor does not meet the requirements 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, and determine whether the storage effectiveness of the storage capacitor meets the requirements based on the image frame loss rate in the electronic ink screen.

4. The ink screen based on zero-spacing continuous display according to claim 3, characterized in that: 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; The increase range 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 a preset second afterimage rate.

5. The ink screen based on zero-spacing continuous display according to claim 4, characterized in that: The control module is used to determine whether the storage effectiveness of the storage capacitor meets the requirements based on the loss rate of the image frames in the electronic ink screen. If the loss rate of the 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.

6. The ink screen based on zero-spacing continuous display according to claim 5, characterized in that: The control module is used to adjust the refresh mode of the electronic ink screen 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.

7. The ink screen based on zero-spacing continuous display according to claim 6, characterized in that: The control module is used to preliminarily determine that the working environment temperature of the electronic ink screen does not meet the requirements when the image frame loss rate in the electronic ink screen is greater than the preset second loss rate, and determine whether the working environment temperature of the electronic ink screen meets the requirements based on the maximum difference in the surface temperature of the electronic ink screen.

8. The ink screen based on zero-spacing continuous display according to claim 7, characterized in that: The refresh mode of the electronic ink screen is adjusted from a global refresh mode to a local refresh mode.

9. The ink screen based on zero-spacing continuous display according to claim 8, characterized in that: The control module is used to determine whether the working environment temperature of the electronic ink screen meets the requirements based on 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.

10. The ink screen based on zero-spacing continuous display according to claim 9, characterized in that: The reduction range of the driving voltage of the driving chip is determined by the difference between the maximum difference of the surface temperature of the electronic ink screen and the preset difference.

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