626 results about "Electronic paper" patented technology

The invention relates to a color electronic paper energy-saving driving design method and system based on optimized square wave driving, and belongs to the technical field of electronic paper display. The method comprises the following steps: firstly, based on a displacement time relation model of charged particles in the color electronic paper microcapsule, determining an optimal driving voltage interval of the particles, and generating a square wave driving waveform library; secondly, the environment temperature is monitored in real time, and square wave driving waveform parameters are dynamically adjusted; thirdly, analyzing statistical characteristics of the input image, dividing content complexity and distributing driving voltage grades; and finally, identifying an image change area through a frame difference algorithm, and performing local refreshing or global refreshing to realize image display. According to the color electronic paper energy-saving driving design method and system based on optimized square wave driving, an efficient and cooperative temperature compensation mechanism and a dynamic voltage adjusting strategy are combined, the display quality is maintained, meanwhile, the driving energy consumption of the color electronic paper is effectively reduced, and it is ensured that the color electronic paper is kept effective and stable in various temperature environments.

The invention discloses an electronic paper display panel, a driving method thereof and a display device, and mainly relates to the technical field of display, a first pixel unit comprises a first upper driving electrode, a first electrophoresis accommodating cavity and a first lower driving electrode, and the first upper driving electrode and the first lower driving electrode are arranged on the two sides of the first electrophoresis accommodating cavity respectively; the first pixel unit further comprises first light absorbing particles, second light absorbing particles and first light reflecting particles which are arranged in the first electrophoresis accommodating cavity; the charge quantity of the first light absorbing particles, the charge quantity of the first light reflecting particles and the charge quantity of the second light absorbing particles are sequentially reduced, the polarities of the first light absorbing particles and the second light absorbing particles are the same, and the polarities of the first light absorbing particles and the first light reflecting particles are opposite. Therefore, the electronic paper display panel can be switched between double-sided display and single-sided display, and the image resolution during single-sided display is improved.

A display panel (30) and a display apparatus (10). The display panel (30) comprises a color filter substrate (100), an electronic-paper layer (400) and an array substrate (500), wherein the array substrate (500), the electronic-paper layer (400) and the color filter substrate (100) are sequentially arranged. The color filter substrate (100) comprises a color filter base (110) and a color resist layer (200), wherein the color resist layer (200) is arranged on the color filter base (110), the color resist layer (200) comprises a plurality of color resists (210), the plurality of color resists (210) are spaced apart, a blank area (280) is arranged between two adjacent color resists (210), at least one optical channel (270) is arranged in each color resist (210), the optical channels (270) penetrate the color resist (210), and a portion of light passes through the optical channels (270) to irradiate the electronic-paper layer (400). By means of the design of the optical channels (270) of the color resist layer (200), the overall brightness of the display panel (30) is improved, and contrast ratio degradation and the occurrence of color shift of the display panel (30) are avoided.

The invention is suitable for the technical field of electronic paper, and provides a light source control method of electronic paper display equipment and the electronic paper display equipment, and the method comprises the steps: obtaining the current ambient light information of the electronic paper display equipment; detecting whether the current ambient light intensity is higher than a light intensity threshold; if it is detected that the current environment light intensity is higher than the light intensity threshold value, a closing instruction is generated; if it is detected that the current environment light intensity is lower than or equal to the light intensity threshold value, determining target light-emitting brightness and target light-emitting color temperature of the light-emitting device based on the current environment light intensity; and controlling the light-emitting device to output light according to the target light-emitting brightness and the target light-emitting color temperature. According to the method, the light-emitting device is controlled to be turned off when the current ambient light intensity is higher than the light intensity threshold, the reflective characteristic of the electronic paper can be returned, and the most appropriate reading experience is provided for a user; when the current ambient light intensity is low, light output can be accurately controlled, and the problem that an existing backlight scheme is not matched with the reflective characteristic of the electronic paper display equipment is solved.

The invention relates to a method for displaying sixteen gray scales by an electronic paper price tag type display module, which comprises the following steps of: performing refreshing by utilizing a condition that at most four waveforms are controlled during refreshing each time in a new and old data comparison mode by utilizing a 1-bit data IC (Integrated Circuit) of electronic paper, identifying the first three gray scales and pure white gray scales in sixteen gray scale data during the first refreshing, and displaying the sixteen gray scales in the sixteen gray scale data; converting into data of corresponding waveforms, and brushing four corresponding gray scales through the debugged gray scale waveforms; in the second to fifth refreshing, three pieces of gray scale data are identified each time, and the debugged corresponding gray scale waveform is called to brush out three gray scales; the method is used for sixteen-gray-scale display through five times of superposition of different-gray-scale pictures.

The invention discloses an electronic paper display device and a control method thereof. The electronic paper display device comprises an electronic paper display module and a control module, the solar energy collection module is used for converting solar energy into electric energy; the low-light energy collecting module is used for converting environment low light into electric energy; the energy storage unit is used for storing the electric energy provided by the solar energy collection module and the low-light energy collection module; the solar energy collection module is electrically connected to the energy storage unit through the first charging management circuit, the first charging management circuit comprises a solar energy power supply management chip and a first anti-reverse charging diode, and the input end of the solar energy power supply management chip is connected with the solar energy collection module; the output end of the solar power management chip is connected in series with the first anti-reverse charging diode and then is connected to the energy storage unit. According to the invention, the self-adaptive safe charging of the electronic paper in an indoor and outdoor changeable illumination environment is realized, and the endurance reliability and the application range of the electronic paper equipment are improved.

The invention discloses electronic paper display equipment and a feed protection and charging optimization method thereof. The electronic paper display equipment comprises an electronic paper screen; the energy storage unit is used for storing electric energy; the ambient light energy acquisition module is used for converting ambient light into electric energy and providing the electric energy to the power management module; the power management module is used for managing storage and distribution of electric energy and outputting a first voltage signal representing the real-time electric quantity of the energy storage unit and a current signal representing the real-time charging current to the main control module; the display driving module is used for driving the electronic paper screen to refresh pictures, and a power supply loop of the display driving module is controlled by the main control module; and the main control module is used for receiving the first voltage signal and the current signal, and generating a control instruction according to a comparison result of the real-time electric quantity and a first electric quantity threshold value and a comparison result of the real-time charging current and a first current threshold value. According to the invention, the problems of easy display abnormity, slow charging and incapability of automatic recovery during feeding of the electronic paper are solved, and energy autonomy and high-reliability operation are realized.

The utility model discloses a passive electronic paper chest card which comprises a main control chip, a display module, a driving module, an electromagnetic induction module and a connecting piece. The display module is configured to display an image. And the driving module is configured to drive the display module to display an image under the control of the main control chip. The electromagnetic induction module is configured to convert induced magnetic energy into electric energy and supply power to the electronic paper chest card. And the connecting piece is connected with the main control chip and the driving module. And the connecting piece is configured to be connected with an external controller, so that the external controller is allowed to supply power to the main control chip and the driving module through the connecting piece. And the external controller provides an image refreshing signal for the main control chip through the connecting piece, so that the main control chip controls the driving module to refresh an image displayed by the display module according to the provided image refreshing signal. The connecting piece can be connected with an external controller, the data transmission requirement and the power supply requirement of color picture refreshing of the passive electronic paper chest card are met, the display picture refreshing failure is avoided, and the picture refreshing quality is improved.

The invention relates to the technical field of intelligent information interaction, in particular to an intelligent information interaction system and an intelligent information interaction method. The intelligent information interaction system comprises an electronic ink screen, a communication module, a communication base station and a cloud service platform, the cloud service platform is in communication connection with the communication module through the communication base station, and the communication module is in communication connection with the electronic ink screen; the communication module is used for receiving first to-be-displayed information sent by the cloud service platform or second to-be-displayed information sent by the user equipment, and sending the display information to the electronic ink screen; and the electronic ink screen is used for displaying the first to-be-displayed information or the second to-be-displayed information. According to the intelligent information interaction system provided by the invention, the cloud service platform or the user equipment can be adopted to update the display information on the electronic ink screen, the information updating efficiency is improved, and the electronic ink screen displays the information depending on the electronic waveform, so that the power consumption of the electronic paper display screen is relatively low, and the electric energy cost is saved.

The invention provides an electrowetting electronic paper low power consumption method based on ambient light dynamic compensation, which comprises the following steps: dividing ambient light intensity intervals, and setting the lowest ambient light intensity of each interval as the standard ambient light of the interval; according to the ambient light intensity collected in real time and a pre-stored voltage-reflection brightness curve, by optimizing the reflection brightness difference of adjacent gray levels and constraining gray level transition smoothness, generating a gray level-brightness mapping relation corresponding to the standard ambient light; converting the gray value of the input image based on the mapping relation, segmenting the image into a bright part and a dark part by setting quantiles, processing the dark part and enhancing the detail area of the image; based on the highest gray value of the converted image and the relation between the PAM driving mode voltage and the gray level, the maximum driving voltage value is dynamically determined, and the maximum driving voltage is reduced along with the enhancement of the ambient light.

The invention provides a heat dissipation method and a heat dissipation system for outdoor electronic paper display equipment. The heat dissipation method comprises the following steps: detecting and acquiring a machine body temperature value and an environment temperature value of the outdoor electronic paper display equipment; according to the machine body temperature value, the environment temperature value and the mapping relation among the machine body preset temperature value, the environment preset temperature value and the heat dissipation duration, the heat dissipation duration is obtained; obtaining a heat dissipation time node according to the next image brushing time and the heat dissipation duration; and at the heat dissipation time node, the heat dissipation device is started to dissipate heat of the machine body. The problem that outdoor electronic paper display equipment is poor in heat dissipation is effectively solved.

The utility model provides an electronic paper point screen crimping device which comprises at least one group of crimping modules and specifically comprises a driving module which comprises an X-direction driving mechanism and a Y-direction driving mechanism, and the Y-direction driving mechanism is arranged on the X-direction driving mechanism; the crimping module is installed on the Y-direction driving mechanism and comprises an opening-closing type driving mechanism, an upper crimping assembly and a lower crimping assembly, the upper crimping assembly and the lower crimping assembly are symmetrically arranged in the vertical direction, and the opening-closing type driving mechanism drives the upper crimping assembly and the lower crimping assembly to move oppositely or reversely; each of the upper crimping assembly and the lower crimping assembly comprises a fixed part, a floating part and a buffer structure connected with the fixed part, a probe is arranged in the fixed part, and the floating part is provided with a through hole for the probe to pass through; when the distance L1 between the upper crimping assembly and the lower crimping assembly is reduced to L2, the floating part pre-flattens the crimping end of the to-be-crimped product and completes correction and alignment; the buffer structure deforms, so that the floating part stops moving and the fixed part continuously moves until the upper probe and the lower probe are in contact with the surface of the product; and the visual unit is arranged above the crimping module. And the crimping precision and accuracy are improved.

A wireless environment parameter monitoring node system based on Bluetooth MESH networking belongs to the technical field of wireless self-organizing sensor network structures, and comprises a laboratory environment monitoring network formed by a plurality of nodes through a Bluetooth MESH self-organizing network; each node is composed of a digital environment parameter sensor module, an electronic paper display module, a lithium battery module, a power management module, a Bluetooth MESH communication module and a master control module, and the master control module is in bidirectional communication connection with the digital environment parameter sensor module, the electronic paper display module, the power management module and the Bluetooth MESH communication module. The lithium battery module is bidirectionally connected with the power management module, and the power management module is connected with the digital environment parameter sensor module. The laboratory environment monitoring system has the characteristics of low cost, small size, low power consumption and the like, can complete large-area multi-laboratory environment monitoring tasks through multi-node networking, is an effective supplement for existing manual reading and single-machine environment monitoring equipment, and conforms to digital scene application of laboratory management system authentication.

The utility model provides a crimping module, comprising an opening and closing type driving mechanism which comprises a first driving end and a second driving end, and the first driving end and the second driving end are configured to synchronously drive so as to move towards each other or in opposite directions; the upper crimping assembly and the lower crimping assembly are symmetrically arranged in the vertical direction and are respectively mounted on the first driving end and the second driving end, each of the upper crimping assembly and the lower crimping assembly comprises a fixed part, a floating part and a buffer structure connected with the fixed part and the floating part, a probe is arranged in the fixed part, and the floating part is provided with a through hole for the probe to pass through; when the upper floating part and the lower floating part are in contact with the product to be crimped, compression continues to enable the buffer structure to generate elastic deformation, the floating parts stop moving, and the fixing part continues moving until the upper probe and the lower probe penetrate through the through holes to be in contact with the surface of the product. Through the innovative design of the fixing part, the floating part and the buffer structure, the electronic paper can be pre-flattened before crimping operation, so that the problem of inaccurate crimping alignment caused by bending and warping of the electronic paper is effectively solved.

The invention discloses an electronic paper display panel and a driving method thereof and an electronic paper display device, and mainly relates to the technical field of display, the electronic paper display panel comprises an array substrate, an electrophoretic particle reflecting layer and a common electrode layer, the electrophoretic particle reflecting layer is arranged on the array substrate, and the common electrode layer is arranged on the array substrate. The common electrode layer is arranged on the side, away from the array substrate, of the electrophoretic particle reflecting layer. The electrophoretic particle reflecting layer comprises a first electrophoretic particle and a second electrophoretic particle, the first electrophoretic particle comprises a first light reflecting part and a first light absorbing part, and the first light reflecting part is connected with the first light absorbing part; the second electrophoretic particle comprises a second light reflecting part and a second light absorbing part, and the second light reflecting part is connected with the second light absorbing part; only the first light reflecting part in the first electrophoretic particle has a first polarity, and only the second light absorbing part in the second electrophoretic particle has a second polarity. Through the design, the response speed of the electronic paper display panel is improved.

The utility model discloses an electronic paper system, which comprises at least one dot-matrix electronic paper, at least one segment code electronic paper and an external circuit, the dot-matrix electronic paper comprises a first electrode and a driving module, and the driving module is used for outputting voltage to the first electrode through a driving output end of the driving module so as to drive the dot-matrix electronic paper to display; the segment code type electronic paper comprises at least one second electrode, and the driving module of any dot-matrix type electronic paper serves as a combined driving module; the external circuit comprises a gating module, the gating module comprises an input end and at least one output end, the at least one output end comprises at least one first output end, and the first output end corresponds to the second electrode; the input end of the gating module is connected with the driving output end of the combined driving module, the first output end of the gating module is connected with the corresponding second electrode, and the gating module is used for communicating the input end of the gating module with one first output end in a time-sharing manner, so that richer colors and information presentation are realized.

The application discloses an electronic paper display panel and a control method thereof and an electronic paper display device, and mainly relates to the technical field of display. The electronic paper display panel comprises a plurality of pixel unit regions, each of which comprises a peep-proof region and a sharing region. An electrophoretic layer and a peep-proof function layer are sequentially arranged on an array substrate, and a common electrode layer is arranged on a side of the electrophoretic layer away from the array substrate. The peep-proof function layer is only located in the peep-proof region. When the electronic paper display panel is switched to a peep-proof state, the array substrate and the common electrode layer drive the electrophoretic layer in the peep-proof region to absorb or reflect light, so as to display a picture. When the electronic paper display panel is switched to a sharing state, the array substrate and the common electrode layer drive the electrophoretic layer in the sharing region to absorb or reflect light, so as to display a picture. Through the above design, the use scene of the electronic paper display panel can be enriched, and the thickness of the electronic paper display panel is reduced.

The present invention provides a fast-responding microcup type electrophoretic electronic paper composition, comprising: 55wt%-80wt% of a photocurable polyurethane resin, 0.1wt%-10wt% of a conductive material, 3wt%-5wt% of a photocuring agent, and 5wt%-30wt% of a reactive diluent. The present invention also provides a method for processing electronic paper using the above composition as a raw material, comprising: preparing a silicon mold of a microcup structure; applying the composition for microcup type electrophoretic electronic paper on a substrate, performing pre-photocuring, and obtaining a conductive coating on the surface of the substrate; applying a composition consisting of a photocurable polyurethane resin, an initiator, and a reactive diluent on the conductive coating to obtain a composite film; imprinting the composite film with a silicon mold, and obtaining electronic paper after photocuring. By increasing the conductivity of the bottom of the microcup while maintaining the non-conductive properties of the cup wall, the voltage share distributed between the two ends of the electrophoretic fluid is increased, thereby increasing the refresh rate of the electronic paper.

A color display, including an electrophoretic medium, wherein the display includes a processor configured to transform image source colors, which are typically standard RGB values, to electrophoretic display device colors, for example ACeP device colors, for displaying the image in the best possible colors on the color display. The processor uses a look up table that depends upon eight primary colors that are produced by the electrophoretic medium.

The application relates to the field of display panels, in particular to an electronic paper display panel and a display device. The electronic paper display panel comprises a pixel layer and a driving circuit for controlling the display of the pixel layer, the pixel layer comprises first sub-pixels arranged in an array, and the driving circuit comprises pixel electrodes arranged correspondingly to the first sub-pixels; the first sub-pixel comprises a pixel sub-cavity, a first color film layer and black charged particles; the first color film layer is arranged in the pixel sub-cavity, and the first color film layer is red, green or blue; the black charged particles are filled in the pixel sub-cavity and can move towards the upper side of the first color film layer or away from the upper side of the first color film layer under the drive of the pixel electrode; the black charged particles shield the first color film layer when moving to the upper side of the first pixel sub-cavity, and the black charged particles expose the first color film layer and make the first sub-pixel display the corresponding color when moving away from the upper side of the first color film layer. The above-mentioned electronic paper display panel can improve the display effect.

The invention discloses a display panel and a manufacturing method thereof, and electronic paper. The display panel comprises a first array substrate and a first substrate; the first substrate is arranged on the first array substrate, the first substrate is provided with a first pixel space, and a first photonic crystal, a first black substance and a first dispersion medium are accommodated in the first pixel space; wherein the first array substrate, the first substrate, the first photonic crystal and the first dispersion medium can transmit light; the display panel comprises a display state and a transparent state, in the display state, the first photonic crystals are uniformly dispersed in the first dispersion medium, and at least part of the first black substance is adsorbed to the bottom wall of the first pixel space; in a transparent state, the first photonic crystal gathers in the first dispersion medium, and the first black substance is adsorbed on the side wall of the first pixel space. The electronic paper applying the display panel can have high color display and high transparency.

The invention discloses a display structure and electronic paper. The display structure comprises a first electrode layer, a pixel wall, ink and a bimetallic layer, the pixel wall is arranged on the first electrode layer, and the pixel wall encloses a pixel space; the ink is accommodated in the pixel space and is connected with the first electrode layer; the bimetallic layer is connected with the inner wall of the pixel wall and comprises a first metal layer and a second metal layer, and the thermal expansion coefficient of the first metal layer is larger than that of the second metal layer; after the bimetallic layer is electrified, at least part of the bimetallic layer is bent, and the orthographic projection of the bimetallic layer on the first electrode layer covers the ink. The display structure can shield the shrunk printing ink, and the display problem caused by printing ink residues is solved.

The application provides an array substrate and an electronic paper display device, and relates to the field of display. The array substrate comprises a substrate, a plurality of scan lines and a plurality of data lines are arranged on the substrate, the plurality of scan lines and the plurality of data lines cross and form a plurality of pixel units, and the pixel unit comprises a pixel electrode and a first thin film transistor. The pixel electrode is arranged opposite to the substrate. The first thin film transistor comprises a gate, a semiconductor layer, a source and a drain. The gate is connected with the scan line, the source is connected with the data line, the drain is electrically connected with the source, the gate comprises a top gate, a bottom gate and a connecting layer, the top gate and the bottom gate are arranged on opposite sides of the semiconductor layer in the thickness direction of the array substrate, and the top gate and the bottom gate are electrically connected through the connecting layer. The application can effectively improve the working stability of the electronic paper display device.

A driving substrate, an electronic paper display module and a display device, belonging to the technical field of display, the driving substrate can be applied to electronic paper, and the driving substrate comprises: a substrate (13) comprising a display area (1) and a peripheral area (4) surrounding the display area (1); a plurality of sub-pixels (111) located in the display area (1); and at least one hole digging region (2), the plurality of sub-pixels (111) surrounding the hole digging region (2); wherein the orthographic projection of the hole digging area (2) on the substrate (13) is located in a fitting area (2 ') of the display area (1), the fitting area (2') is an area defined by a regular graph obtained after fitting is conducted on the edge of the display area (1), and all or part of the fitting area (2 ') is the display area (1).

The application discloses an FPL film tearing device for electronic paper production and relates to the technical field of electronic paper production. The device comprises a rack, a control device fixedly installed on the top of the rack, and a feeder fixedly installed on one side of the rack. The FPL film tearing device for electronic paper production fastens the film material end of the electronic paper through a film material locker, uses an electronic paper mover and the feeder in cooperation to make the electronic paper move forward to realize the film tearing process, uses the setting of a preheater to improve the contact temperature of a film spreader and the film material, preheats the film material to reduce the stress during film tearing, uses the setting of the film spreader to make the film tearing interface position of the film material and the electronic paper substrate always maintain the same degree of film tearing strength, realizes the smooth separation of the film material through uniform external force, avoids the uneven film tearing between the film material and the substrate, and further guarantees the production efficiency and quality of the electronic paper.

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.

The application discloses a high-gray-scale debugging method and device based on voltage control, a terminal device and a storage medium. The method comprises the following steps: obtaining a target gray scale and attributes of an electronic paper to be debugged; determining a target voltage value corresponding to the target gray scale according to the target gray scale and a preset gray scale voltage mapping table; determining a basic voltage value of the electronic paper to be debugged and a corresponding debugging mode according to the attributes of the electronic paper to be debugged; calculating a driving voltage value of the electronic paper to be debugged according to the debugging mode, the basic voltage value and the target voltage value; and performing a gray scale debugging operation on the electronic paper to be debugged according to the driving voltage value and the target gray scale, so that the electronic paper to be debugged reaches the target gray scale. Through implementation of the application, the artificial operation debugging time is reduced, and the high-gray-scale debugging efficiency of the electronic paper is significantly improved.

To provide an optical laminate for electronic paper that suppresses the deterioration of barrier properties over time. An optical laminate 200 for electronic paper having a first surface P1 and a second surface P2 opposite to the first surface, wherein the optical laminate comprises a first substrate 11 and a barrier film 100 having an inorganic oxide layer 21 on a second substrate 12, the first substrate 11 being located on the first surface P1 side of the second substrate 12, the inorganic oxide layer 21 being located on the second surface P2 side of the second substrate 12, the first substrate 11 being a triacetylcellulose film, and the second substrate 12 being a polyester film.

The application discloses a conjugated polymer material capable of realizing neutral state green / black-transparent electrochromic performance and a preparation method and application thereof. The conjugated polymer material (IV) is prepared through copolymerization of a cyclic ether modified p-dibromobenzene ring monomer (I), a thiophene derivative ProDOT monomer (II) and a D-A-D unit ProDOT-BTD-ProDOT coupling monomer (III). The electrochromic polymer thin film processed from the conjugated polymer material has application prospects in the fields of intelligent windows, intelligent glasses, displays, electronic paper and the like. In the material, the cyclic ether modified p-dibromobenzene ring monomer effectively reduces the oxidation potential of the conjugated polymer, improves the electrochromic performance of the black / green-transparent electrochromic thin film, and realizes stable and reversible conversion.

The invention provides electronic paper, a preparation method and a display device.A display layer of the electronic paper is arranged between a first electrode layer and a second electrode layer, the display layer comprises a plurality of microcavity structures, electrophoretic liquid is arranged in the microcavity structures, and at least one microcavity structure corresponds to one pixel region; the color resistance layer is arranged on the side, away from the first electrode layer, of the display layer, a plurality of color resistance areas are arranged on the color resistance layer, and the color resistance areas are arranged corresponding to the microcavity structures; wherein a cavity wall structure is arranged between two adjacent microcavity structures, the cavity wall structure is provided with at least two barrier layers along the thickness direction of the display layer, the at least two barrier layers and the color resistance layer are made of color resistance materials, and the at least two barrier layers are made of different color resistance materials; the cavity wall structure is made of a color resistance material and can be manufactured by adopting a partially same process with a color resistance layer, the preparation cost is reduced, and at least two barrier layers with different color resistances are arranged, so that a shielding area is formed to shield a switching device in the electronic paper.