Large electronic paper display device and method

Abstract

The large electronic paper display device comprises at least two electronic paper display units and a display control module, the electronic paper display unit comprises an electronic paper display screen and a driving module; the electronic paper display units are numbered according to the sequence of M rows and N columns; the display control module is in electric signal connection with the driving module; the display control module is used for decomposing an image T to be displayed into M rows and N columns of display sub-images; the display control module is used for sending the display sub-images to the electronic paper display units with M rows and N columns of serial numbers; and the driving module is used for driving the electronic paper display screen to display the display subgraph. Comprising the following steps: step A10, decomposing an image T to be displayed into M rows and N columns of display sub-images; a20, sending the display sub-graph to an electronic paper display unit with M rows and N columns of serial numbers; and A30, displaying the display sub-graph on an electronic paper display screen of the electronic paper display unit.

Description

Technical Field

[0001] This application belongs to the field of display technology, and particularly relates to a large electronic paper display device and method. Background Art

[0002] The TFT-based electronic paper display screen is also a type of active matrix liquid crystal display device. Each pixel on the TFT display is driven by a thin film transistor integrated behind it; a corresponding thin film transistor is set for each pixel to form a thin film transistor array. The driving of the thin film transistor array is to integrate the gate drive inside the IC onto the array substrate (TFT Glass). By continuously applying a driving waveform voltage to each pixel through the driving IC chip to drive the electronic paper particles, the effect of displaying an image is achieved.

[0003] In the prior art, the electronic paper display screens all have relatively small screen sizes. Limited by the size of the FPL (Flexible Printed Lamination) raw material master sheet and the yield of the material manufacturing process, the production yield of large-size display screens is low, the unit price is high, and the maximum size specification is limited, resulting in ineffective promotion of the application of the products. How to splice multiple small-size screens into a large display screen for use in outdoor advertising, bulletin boards and other fields still requires corresponding solutions.

[0004] Glossary: EPD is the abbreviation of the English phrase "electronic paper display", and its Chinese meaning is electronic paper display.

[0005] TFT is the abbreviation of the English phrase "Thin Film Transistor", and its Chinese meaning is thin film field effect transistor; each pixel on the TFT display is driven by a thin film transistor integrated behind it.

[0006] ITO is the abbreviation of the English phrase "Indium Tin Oxide", and its Chinese meaning is indium tin oxide. In this application, electronic paper ITO refers to the conductive film layer material of the transparent conductive film shielding glass, which is mainly ITO (indium tin oxide semiconductor) film. Summary of the Invention

[0007] The technical problem to be solved by this application is to avoid the deficiencies in the prior art, such as the inconvenience in manufacturing large screens and the inability to simply splice and use divided screens, and to provide a large electronic paper display device and method.

[0008] The technical solution of the present application to solve the above technical problems is a large electronic paper display device, including: at least two electronic paper display units and a display control module; the electronic paper display unit includes an electronic paper display screen and a driving module; the above-mentioned electronic paper display units are numbered in the order of M rows and N columns; the display control module is electrically connected to the above-mentioned driving module; the display control module is used to decompose the image T to be displayed into M rows and N column display sub-images; the display control module is used to send the above-mentioned display sub-images to the electronic paper display units numbered in the order of M rows and N columns; the above-mentioned driving module is used to drive the electronic paper display screen to display the above-mentioned display sub-images.

[0009] It may be that the above-mentioned display sub-image corresponds to one pixel in the image T.

[0010] It may be that the display control module is electrically connected to the above-mentioned driving module through a bus protocol.

[0011] It may be that the pixel size of the above-mentioned display sub-image is Km rows and Kn column pixels.

[0012] It may be that the above-mentioned bus protocol is a 485 bus protocol or a CAN bus protocol.

[0013] It may be that the above-mentioned electronic paper display screen is a display screen made of color-changing electronic paper.

[0014] It may be that the above-mentioned driving module includes an electronic ink screen driving unit for driving the electronic paper display screen to display; it may be that the above-mentioned electronic paper is black, white, red, and yellow four-color electronic paper; the color particles include black particles, white particles, red particles, and yellow particles.

[0015] It may be that the above-mentioned electronic paper is black, white, and red three-color electronic paper; the color particles include black particles, white particles, and red particles.

[0016] It may be that the above-mentioned electronic paper is black, white, and yellow three-color electronic paper; the color particles include black particles, white particles, and yellow particles.

[0017] It may be that the above-mentioned electronic paper is black and white two-color electronic paper; the color particles include black particles and white particles.

[0018] It may be that the above-mentioned driving module includes an address code input unit, and the above-mentioned address code input unit is used to input the values of M and N.

[0019] It may be that the above-mentioned driving module includes an address code input unit, and the above-mentioned address code input unit inputs the values of M and N through a bus protocol.

[0020] The technical solution of this application to solve the above technical problems can also be a large electronic paper display method, which is characterized in that, based on the above large electronic paper display device, it includes the following steps: Step A10: Decompose the image T to be displayed into M rows and N columns of display sub - graphs; Step A20: Send the above display sub - graphs to the electronic paper display units numbered in the order of M rows and N columns; Step A30: The electronic paper display screen of the electronic paper display unit displays the above display sub - graphs.

[0021] One of the beneficial effects of the technical solution in this application is that a large electronic paper display device formed by combining multiple small electronic paper display units can also achieve the large - screen display function.

[0022] One of the beneficial effects of the technical solution in this application is that the display sub - graph corresponds to one pixel in the above image T, which is convenient for full - screen and split - screen driving and simplifies the control.

[0023] One of the beneficial effects of the technical solution in this application is that the display control module is electrically connected to the above - mentioned drive module through a bus protocol, and the image data is transmitted using the bus protocol, avoiding the TFT driving method for large screens, and the reliability of data transmission using the bus protocol is higher.

[0024] One of the beneficial effects of the technical solution in this application is that both the transmission distance and quantity of the 485 bus communication unit are sufficient to support the split - screen quantity and distance in a large screen.

[0025] One of the beneficial effects of the technical solution in this application is that both the transmission distance and quantity of the CAN bus communication unit are sufficient to support the split - screen quantity and distance in a large screen, and it has stronger anti - interference performance.

[0026] One of the beneficial effects of the technical solution in this application is that the electronic paper display screen is made of color - changeable electronic paper and can support color - changeable display.

[0027] One of the beneficial effects of the technical solution in this application is that the electronic paper is four - color electronic paper, three - color electronic paper or two - color electronic paper, with many supported types, suitable for different large - screen applications.

[0028] One of the beneficial effects of the technical solution in this application is that the drive module includes an address code input unit, which is convenient for the management of a large number of split - screens.

[0029] One of the beneficial effects of the technical solution in this application is that the control method of the large electronic paper display method based on the above - mentioned large electronic paper display device is simple and reliable, easy to splice, and flexibly applicable to various different scenarios. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of a large electronic paper display device;

[0031] Figure 2 It is a schematic diagram of an electronic paper display unit;

[0032] Figure 3 It is a schematic diagram of a large electronic paper display device;

[0033] Figure 4 It is a schematic block diagram of a driving module;

[0034] Figure 5 It is a schematic block diagram of a driving module;

[0035] Figure 6 It is a schematic block diagram of a driving module;

[0036] Figure 7 It is a schematic block diagram of a driving module. Specific Embodiments

[0037] The following further details the embodiments of the present application in conjunction with the accompanying drawings.

[0038] It should be noted that the following is a description of the preferred embodiments of the present application and does not constitute any limitation to the present application. The description of the preferred embodiments of the present application is only for the description of the general principles of the present application. The embodiments described in the present application are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, terms such as "first" and "second", as well as technical features numbered with Arabic numerals such as 1, 2, 3, etc., and numbers such as "A" and "B" are only for descriptive purposes and are only for the convenience of explanation, and do not represent a sequential relationship in time or space; it cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first" and "second", as well as features numbered with Arabic numerals such as 1, 2, 3, etc., may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" is two or more unless otherwise specifically defined.

[0040] As Figure 1, An embodiment of a large electronic paper display device, comprising: at least two electronic paper display units and a display control module; the electronic paper display unit includes an electronic paper display screen and a driving module; the above-mentioned electronic paper display units are numbered in the order of M rows and N columns; the display control module is electrically connected to the above-mentioned driving module; the display control module is used to decompose the image T to be displayed into M rows and N column display sub-images; the display control module is used to send the above-mentioned display sub-images to the electronic paper display units numbered in the order of M rows and N columns; the above-mentioned driving module is used to drive the electronic paper display screen to display the above-mentioned display sub-images. M and N are natural numbers.

[0041] In the prior art, if a large electronic paper display device is produced in an integrated non-splicing manner, large production equipment is required to cooperate, and the design and implementation of TFT thin-film transistors are carried out on a very large scale, which is very challenging. Not only is the energy consumption extremely high, but the process efficiency is not high, and the yield of the process is not high, which is very uneconomical.

[0042] Based on the above display device, multiple small electronic paper display units can be combined to form a large electronic paper display device based on the cooperation of small electronic paper display units and a display control module, and the large-screen display function can also be realized.

[0043] In some embodiments, the above display sub-image corresponds to one pixel in the above image T.

[0044] In some embodiments, the pixel size of the above display sub-image is Km rows and Kn columns of pixels. Km rows and Kn columns are natural numbers.

[0045] Such as Figure 2 , the pixel size of the above display sub-image is 3 rows and 3 columns, a total of 9 pixels.

[0046] Such as Figure 4 , in some embodiments, the display control module is electrically connected to the above-mentioned driving module through a bus protocol. The above-mentioned driving module includes a bus communication unit, and the display control module is electrically connected to the bus communication unit of the above-mentioned driving module through a bus protocol.

[0047] Such as Figure 5 , in some embodiments, the display control module is electrically connected to the above-mentioned driving module through a bus protocol. The bus communication unit is a 485 bus communication unit. The above bus protocol is a 485 bus protocol.

[0048] Such as Figure 6 , in some embodiments, the display control module is electrically connected to the above-mentioned driving module through a bus protocol. The bus communication unit is a CAN bus communication unit. The above bus protocol is a CAN bus protocol.

[0049] In some embodiments, the above-mentioned electronic paper display screen is a display screen made of color-changing electronic paper.

[0050] In some embodiments, for the above-mentioned large electronic paper display device, the electronic paper is black, white, red, and yellow four-color electronic paper; the color particles include black particles, white particles, red particles, and yellow particles.

[0051] In some embodiments, for the above-mentioned large electronic paper display device, the electronic paper is black, white, and red three-color electronic paper; the color particles include black particles, white particles, and red particles.

[0052] In some embodiments, for the above-mentioned large electronic paper display device, the electronic paper is black, white, and yellow three-color electronic paper; the color particles include black particles, white particles, and yellow particles.

[0053] In some embodiments, for the above-mentioned large electronic paper display device, the electronic paper is black and white two-color electronic paper; the color particles include black particles and white particles.

[0054] Such as Figure 7 , in some embodiments, the above-mentioned driving module includes an address code input unit, and the address code input unit is used to input the values of M and N. The above-mentioned driving module includes an address code input unit, and the address code input unit inputs the values of M and N through a bus protocol.

[0055] In an embodiment of a large electronic paper display method, based on the above-mentioned large electronic paper display device, it includes the following steps: Step A10: Decompose the image T to be displayed into M rows and N columns of display sub-graphs; Step A20: Send the above-mentioned display sub-graphs to the electronic paper display units numbered in the order of M rows and N columns; Step A30: The electronic paper display screen of the electronic paper display unit displays the above-mentioned display sub-graphs.

[0056] The technical solution in this application is applied to the electronic paper product layout application. Such as Figure 3 As shown, there are 100×100 pixel points in one split screen, which can be used as one pixel point of a large screen to form a multi-row and multi-column splicing screen. The 100×100 pixel points in the split screen have corresponding driving modules. The display control module divides the display pattern into sub-graphs according to the corresponding split screen size; the display control module is electrically connected to the driving module, and the display control module sends the corresponding sub-graphs to the corresponding driving modules to realize the splicing display of multiple split screens into a large screen and display a complete large picture.

[0057] The number of rows and columns of the multi-row and multi-column can be set according to actual needs, Figure 3 shows an embodiment of 2 rows and 3 columns.

[0058] Take small-sized electronic module products as independent display pixels, and form a large-sized combined screen by technological layout of N multiple small-pixel electronic paper modules. Problems to be solved: Solve the problem that the maximum size of the electronic paper display is limited by the size of the FPL raw material; it is easy to solve the production cost and yield problems of small-sized electronic modules; solve the maintenance cost problem: only need to repair or replace the damaged display pixel module.

[0059] The small-sized electronic module is the small-sized electronic paper display unit, and the size specification range can be from 1×1 inch to 3×3 inches. An electronic paper display unit can be made into an independent display pixel component, that is, an electronic paper display unit is used as a single pixel point.

[0060] In some other embodiments, an electronic paper display unit can be used as several pixel points. For example Figure 2 , a small electronic paper display unit can be used as 3×3 pixels. At this time, the segmentation of the image can also be adjusted accordingly.

[0061] Each small-sized electronic paper module is used as an independent display pixel component. The pixel component is embedded into the circuit board frame, and an external signal is input to control each independent pixel component to form an image, realizing the presentation of the overall image; different numbers of small-sized electronic paper module pixel components can be used through layout to achieve large-screen applications of different sizes and shapes. It is tested and confirmed that the display pixel component can display monochromatic pictures such as red, yellow, black, and white.

[0062] In some embodiments, it further includes a substrate frame for accommodating multiple electronic paper display units, and the substrate frame includes different sizes and shapes.

[0063] As shown in the attached drawings, the above are only embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the application specification and the attached drawings, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of the present application.

Claims

1. A large electronic paper display device, It is characterized in that It includes: at least two electronic paper display units and a display control module; The electronic paper display unit includes an electronic paper display screen and a driving module; the electronic paper display unit is numbered in the order of M rows and N columns; The display control module is connected to the driving module by electrical signals; The display control module is used to decompose the image T to be displayed into M rows and N columns of display sub-images; The display control module is used to send the display sub-image to the electronic paper display units numbered sequentially in M ​​rows and N columns; The driving module is used to drive the electronic paper display screen to display the display sub-image.

2. The large electronic paper display device according to claim 1, characterized in that: The display sub-image corresponds to a pixel in the image T.

3. The large electronic paper display device according to claim 1, characterized in that: The display control module is connected with the driving module via bus protocol electrical signals.

4. The large electronic paper display device according to claim 3, characterized in that: The pixel size of the display sub-image is Km rows and Kn columns of pixels.

5. The large electronic paper display device according to claim 3, characterized in that: The bus protocol is a 485 bus protocol or a CAN bus protocol.

6. The large electronic paper display device according to claim 1, characterized in that: The electronic paper display screen is a display screen made of color-changeable electronic paper.

7. The large electronic paper display device according to claim 1, characterized in that: The driving module includes an electronic ink screen driving unit for driving the electronic paper display screen to display; Include any of the following technical features: TA1: The electronic paper is black, white, red and yellow four-color electronic paper; the color particles include black particles, white particles, red particles and yellow particles; TA2: The electronic paper is black, white and red electronic paper; the color particles include black particles, white particles and red particles; TA3: The electronic paper is black, white and yellow electronic paper; the color particles include black particles, white particles and yellow particles; TA4: The electronic paper is black and white electronic paper; the color particles include black particles and white particles.

8. The large electronic paper display device according to claim 1, characterized in that: The driving module includes an address code input unit, and the address code input unit is used to input the values ​​of M and N.

9. The large electronic paper display device according to claim 3, characterized in that: The driving module comprises an address code input unit, and the address code input unit inputs the values ​​of M and N through a bus protocol.

10. A large electronic paper display method, characterized in that: Based on the large electronic paper display device according to any one of claims 1 to 9, The following steps are involved: Step A10: decompose the image T to be displayed into M rows and N columns of display sub-images; Step A20: sending the display sub-image to the electronic paper display units numbered sequentially in M ​​rows and N columns; Step A30: the electronic paper display screen of the electronic paper display unit displays the display sub-image.

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