Electronic paper display module and electronic paper display device
By adding a heating plate to the electronic paper display module and using a driver chip to detect temperature signals, the problem of existing electronic paper requiring multiple temperature zone waveforms is solved, and the effect of reducing debugging costs and improving efficiency is achieved.
Patent Information
- Application Number
- CN202422310542.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Existing electronic papers require debugging of multiple temperature zone waveforms, resulting in a large amount of manpower and equipment investment, and the existing technology has not yet proposed an effective solution.
By adding a heating plate to the electronic paper display module, and using the driver chip to detect the real-time temperature signal of the screen, it is fed back to the main control board. The main control board controls the heating state of the heating plate according to the temperature signal to keep the display body within the preset temperature.
The purpose of controlling the temperature of the display screen is achieved, the debugging cost is reduced, and the problem of existing electronic papers requiring multiple temperature zone waveforms is solved, which improves debugging efficiency and cost-effectiveness.
Smart Images
Figure CN223038269U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic paper display, in particular to an electronic paper display module and an electronic paper display device. Background Art
[0002] Electronic paper is a new type of display screen, which has the characteristics of ultra-thin, rewritable, easy to carry, and can maintain the display even when powered off. Its display effect is close to that of natural paper, which can avoid reading fatigue. At present, it is widely used in fields such as electronic tags, conference nameplates, student ID cards, subway pull rings, and billboards.
[0003] However, the existing electronic paper has the drawback of needing to debug the waveforms of multiple temperature zones, so there are problems of investing a lot of manpower and equipment. In view of the above problems, the industry has not yet proposed an effective solution. Summary of the Utility Model
[0004] Purpose of the utility model: To provide an electronic paper display module and an electronic paper display device to at least solve one of the above problems existing in the prior art.
[0005] Technical solution: An electronic paper display module includes:
[0006] A substrate;
[0007] A heating plate, arranged at the bottom of the substrate;
[0008] A main control board, arranged on the heating plate on the side far from the substrate and electrically connected to the heating plate;
[0009] A flexible circuit board, electrically connected to the substrate and the main control board respectively; and
[0010] A driving chip, arranged on the substrate on the side far from the heating plate and electrically connected to the substrate;
[0011] Wherein, the driving chip detects the real-time temperature signal of the screen body and feeds back the temperature signal to the main control board, and the main control board issues a control signal according to the fed-back temperature signal to control the heating plate to start or stop heating the screen body, so that the display screen body is within a preset temperature range.
[0012] Preferably, a display screen body component is arranged on the side of the substrate far from the heating plate, and the display screen body component is electrically connected to the driving chip.
[0013] Preferably, the display screen body component includes: an electronic ink film located above the substrate, a protective film is arranged above the electronic ink film, and a semi-open filling cavity is formed by enclosing the outer edge of the electronic ink film with the protective film and the substrate respectively.
[0014] Preferably, sealant is provided around the filling cavity.
[0015] Preferably, the area of the electronic ink film is smaller than that of the protective film.
[0016] Preferably, a conductive layer is provided on one side of the substrate close to the display screen assembly.
[0017] Preferably, a temperature sensor is provided inside the driving chip.
[0018] Preferably, the heating plate is a metal heating plate.
[0019] Preferably, the substrate is a TFT glass substrate or a flexible substrate.
[0020] To achieve the above object, according to another aspect of the present application, an electronic paper display device is further provided.
[0021] The electronic paper display device according to the present application includes the electronic paper display module as described above.
[0022] Beneficial effects: In the embodiment of the present application, by adding a heating plate, the driving chip detects the real-time temperature signal of the screen body and feeds the temperature signal back to the main control board. The main control board issues a control signal according to the fed-back temperature signal to control the heating plate to start or stop heating the screen body, so that the display screen body is within a preset temperature range, achieving the purpose of controlling the temperature of the display screen body, thereby realizing the technical effect of reducing the debugging cost, and further solving the technical problem that the existing electronic paper needs to debug waveforms in multiple temperature zones, thus improving the technical problem of high debugging cost. Description of the Drawings
[0023] Figure 1 is a schematic structural diagram of the electronic paper display module of the present utility model;
[0024] Figure 2 is a schematic structural diagram of the display screen assembly of the electronic paper display module of the present utility model.
[0025] Reference numerals are:
[0026] 10. Substrate; 101. Conductive layer;
[0027] 20. Heating plate;
[0028] 30. Main control board;
[0029] 40. Flexible circuit board;
[0030] 50. Driving chip;
[0031] 60. Display screen assembly; 601. Electronic ink film; 602. Protective film;
[0032] 70. Sealant. Detailed implementation manners
[0033] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.
[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so as to implement the embodiments of this application described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0035] In addition, the terms "install", "set", "provided with", "connected", "coupled", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0036] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.
[0037] For a better understanding of the technical problems of this application, the following explanations are made:
[0038] Currently, whether it is a black-and-white ink screen or a multi-color ink screen, it is necessary to independently debug the driving waveforms applicable to different temperature ranges. Especially for color e-paper, a more refined temperature region division is required. For each divided temperature zone, a corresponding driving waveform is needed to drive the display, and each driving waveform needs to be debugged manually, which requires a certain amount of manpower and temperature testing equipment required for different temperatures (such as a temperature control box or chamber). Usually, each display module generally needs to be debugged in 6 to 10 temperature zones, and due to the consistency of the film and the influence of the process, each production also requires re-debugging. That is to say, waveform debugging is required as long as production is carried out.
[0039] Such as Figure 1-2 As shown, the present application relates to an e-paper display module and an e-paper display device. The e-paper display module includes: a substrate 10; the substrate 10 refers to a carrier substrate 10, which can achieve a good bearing effect; further, the substrate 10 is a TFT glass substrate or a flexible substrate; it can achieve the effect of multiple material selection, and at the same time can provide good physical properties;
[0040] For example: The TFT (thin film transistor) glass substrate provides the necessary circuits for driving the e-paper pixels, controls the voltage of each pixel, and ensures the display of images and texts; the TFT layer controls the movement of particles in the FPL ink film through an electric field; the TFT glass substrate controls the strength and direction of the electric field by installing thin film transistors at each pixel position.
[0041] A heating plate 20 is provided at the bottom of the substrate 10; it can achieve a good matching effect; at the same time, it can also achieve a good heating effect on the display screen body. Preferably, the heating plate 20 is a metal heating plate. It has the advantages of rapid heating, uniform heat distribution, and easy control.
[0042] A main control board 30 is provided on the heating plate 20 on the side far from the substrate 10 and is electrically connected to the heating plate 20; it can achieve a good matching effect, and at the same time can achieve a good electrical control effect, thereby ensuring a good cooperative working effect between components.
[0043] Preferably, the model of the main control board 30 can be an EPD driving development board, a Good Display EPD main board, or an STM32 driving main board, etc.; it can achieve the effect of multiple models available for selection, so as to achieve the effect of flexible use.
[0044] A flexible circuit board 40 is electrically connected to the substrate 10 and the main control board 30 respectively; it can achieve a good electrical connection effect, thereby ensuring a good electrical signal transmission effect.
[0045] The driving chip 50 is disposed on the substrate 10 on the side far from the heating plate 20 and is electrically connected to the substrate 10; it can control the voltage change of each pixel on the TFT glass substrate 10 to adjust the display effect; at the same time, the driving chip 50 can also control the operation of the heating plate 20 to ensure that the temperature is synchronized with the display performance.
[0046] It should be noted that the driving IC is a chip integrating multiple functional modules and is used to control and drive the operation of other electronic devices.
[0047] Among them, the driving chip 50 detects the real-time temperature signal of the screen body and feeds the temperature signal back to the main control board 30. The main control board 30 issues a control signal according to the fed-back temperature signal to control the heating plate 20 to start or stop heating the screen body so that the display screen body is within a preset temperature range.
[0048] Specifically, the driving chip 50 detecting the real-time temperature signal of the screen body means that a temperature sensor is integrated in the driving chip 50, which can monitor the temperature change on the surface or inside of the screen in real time. The temperature sensor continuously reads the current temperature value and converts it into a temperature signal.
[0049] The driving chip 50 transmits the collected temperature signal to the main control board 30. The main control board 30 is responsible for processing the fed-back data and judging whether the current temperature is within the preset range; if the temperature of the screen body deviates from the preset value, further measures will be taken according to the judgment of the main control board 30.
[0050] The main control board 30 issues a control signal according to the fed-back temperature signal: the main control board 30 analyzes whether the current temperature needs to be adjusted according to the received temperature signal; if the temperature is lower or higher than the set expected temperature, the main control board 30 will send a control signal to the heating plate 20 to start or stop the heating operation.
[0051] The control signal of the main control board 30 is used to start or stop the operation of the heating plate 20. When the temperature of the screen body is too low, the heating plate 20 will start to work to raise the temperature of the screen body to the preset value; when the temperature reaches or exceeds the preset value, the heating plate 20 will stop heating; it can ensure that the temperature of the electronic paper display screen body is maintained within an ideal range (usually room temperature). Maintaining at this preset temperature can ensure that the display effect and refresh performance of the electronic paper will not be affected by the external temperature change.
[0052] In this application, a layer of metal heating plate 20 is attached under the TFT glass substrate 10. The heating plate 20 is controlled by the main board, and the heat conducted by the heating plate 20 to the screen body is much greater than the influence of the external ambient temperature on the screen body. Therefore, no matter what temperature environment the display screen body is in, the waveform in the pre-adjusted normal temperature area can be retrieved for driving display.
[0053] Specifically, only the driving waveform of one normal temperature zone needs to be debugged for each batch. If waveforms of other temperature zones are required, the main board only needs to control the heating plate 20 to heat up, so that the temperature of the entire screen body rises to the normal temperature zone or the preset temperature zone. At this time, when the built-in temperature sensor of the driving chip 50 detects that the temperature reaches the normal temperature or the preset temperature condition, it feeds back to the main board that the screen brushing operation can start. After the screen brushing is completed, the driving chip 50 enters the standby state. Then, the main control board 30 cancels the heating function of the heating plate 20. In this way, a set of waveforms in the normal temperature or preset temperature zone can achieve the display effect of reaching the normal temperature or preset temperature under different temperatures, without investing too much debugging manpower in debugging different temperature zones. That is to say, regardless of the temperature environment of the display screen body, the waveforms in the normal temperature or preset temperature zone can be retrieved for refreshing, thus saving the investment in additional temperature testing equipment (such as temperature control boxes or chambers) and WF (waveform) personnel.
[0054] The present application also has the following beneficial effects:
[0055] 1. By adding a layer of metal heating plate 20, the temperature of the display screen body can be controlled.
[0056] 2. By only debugging the driving waveforms of one normal temperature zone or preset temperature zone, the investment in WF debugging manpower and Chambers can be greatly saved.
[0057] 3. By concentrating on debugging the waveforms of one temperature zone, the waveforms of this temperature zone can be debugged to the optimal state, resulting in the best display effect.
[0058] From the above description, it can be seen that the present application achieves the following technical effects:
[0059] In the embodiment of the present application, by adopting the method of adding a heating plate 20, the driving chip 50 detects the real-time temperature signal of the screen body and feeds the temperature signal back to the main control board 30. The main control board 30 issues a control signal according to the fed-back temperature signal to control the heating plate 20 to start or stop heating the screen body, so that the display screen body is within the preset temperature range, achieving the purpose of controlling the temperature of the display screen body, thus realizing the technical effect of reducing the debugging cost, and further solving the technical problem that the existing electronic paper needs to debug the waveforms of multiple temperature zones, so the debugging cost is very high.
[0060] Further, a display screen assembly 60 is provided on the side of the substrate 10 away from the heating plate 20, and the display screen assembly 60 is electrically connected to the driving chip 50. It can be understood that by using methods including but not limited to: thermocompression connection or adhesive connection, connecting the display screen assembly 60 to the top of the conductive layer 101 of the substrate 10 can achieve a good physical connection effect, thereby ensuring the stability of the structure; at the same time, it can also achieve a good single-sided display effect.
[0061] Further, the display screen assembly 60 includes: an electronic ink film 601 located above the substrate 10, a protective film 602 is provided above the electronic ink film 601, and a semi-open filling cavity is formed by enclosing the outer edge of the electronic ink film 601 with the protective film 602 and the substrate 10 respectively. It can be understood that by sequentially laminating the protective film 602, the electronic ink film 601 and the substrate 10 from top to bottom, a stable electronic display structure can be formed, thereby ensuring a good display effect. At the same time, at the outer edge of the electronic ink film 601, a semi-open filling cavity, that is, a groove, is formed by enclosing it with the adjacent protective film 602 and the substrate 10 respectively, which can provide a basis and guarantee for subsequent material filling. Among them, the protective film 602 is a PS water barrier film, which can achieve good water blocking and waterproof effects; the electronic ink film 601 is an FPL ink film.
[0062] Furthermore, a sealant 70 is provided around the filling cavity; by providing a sealant 70, that is, an edge sealant (EC edge sealant), around the first filling cavity, a good sealing effect can be achieved, thereby increasing the service life of the electronic ink film 601; at the same time, it can also achieve the effect of increasing the structural strength.
[0063] Further, the area of the electronic ink film 601 is smaller than the area of the protective film 602. It can be understood that it can achieve a good protection effect on the electronic ink film 601. At the same time, on the premise of ensuring a good display effect, it can also increase the service life of the electronic ink film 601.
[0064] Further, a conductive layer 101 is provided on the side of the substrate 10 close to the display screen assembly 60. It can be understood that a good conductive effect can be achieved. By applying a voltage, a uniform electric field distribution is formed on its surface, and uniform current transmission can be achieved. Preferably, the conductive layer 101 is ITO.
[0065] Further, a temperature sensor is provided inside the driving chip 50. It can be understood that by integrating a temperature sensor inside the driving chip 50, a good temperature detection effect can be achieved.
[0066] The present application also relates to an electronic paper display device, including the above-mentioned electronic paper display module. For the electronic paper display device applying the above-mentioned electronic paper display module provided in this embodiment, its basic principle and the technical effects produced are the same as those in the above-mentioned embodiment. For the parts not mentioned in this embodiment, please refer to the corresponding content above.
[0067] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. An electronic paper display module, characterized in that: include: base(10); A heating plate (20) is arranged at the bottom of the substrate (10); A main control board (30) is arranged on the heating board (20) at a side away from the substrate (10) and is electrically connected to the heating board (20); A flexible circuit board (40) is electrically connected to the substrate (10) and the main control board (30) respectively; and A driving chip (50) is arranged on the substrate (10) at a side away from the heating plate (20) and is electrically connected to the substrate (10); The driving chip (50) detects a real-time temperature signal of the screen and feeds the temperature signal back to the main control board (30). The main control board (30) sends a control signal based on the fed-back temperature signal to control the heating plate (20) to start or stop heating the screen, so that the display screen is within a preset temperature.
2. The electronic paper display module according to claim 1, characterized in that: A display screen assembly (60) is provided on a side of the substrate (10) away from the heating plate (20), and the display screen assembly (60) is electrically connected to the driving chip (50).
3. The electronic paper display module according to claim 2, characterized in that: The display screen assembly (60) comprises: an electronic ink film (601) located above the substrate (10); a protective film (602) is arranged above the electronic ink film (601); and outer edges of the electronic ink film (601) are respectively enclosed with the protective film (602) and the substrate (10) to form a semi-open filling cavity.
4. The electronic paper display module according to claim 3, characterized in that: Sealing glue (70) is arranged around the filling cavity.
5. The electronic paper display module according to claim 3, characterized in that: The area of the electronic ink film (601) is smaller than the area of the protective film (602).
6. The electronic paper display module according to claim 2, characterized in that: A conductive layer (101) is provided on a side of the substrate (10) close to the display screen assembly (60).
7. The electronic paper display module according to claim 1, characterized in that: A temperature sensor is arranged inside the driving chip (50).
8. The electronic paper display module according to claim 1, characterized in that: The heating plate (20) is a metal heating plate.
9. The electronic paper display module according to claim 1, characterized in that: The substrate (10) is a TFT glass substrate or a flexible substrate.
10. An electronic paper display device, characterized in that: An electronic paper display module comprising any one of claims 1 to 9.