Electronic paper display device and operating method thereof
The panel driving circuit calculates the balanced voltage and simplifies the correlation of waveform setting information, which solves the problems of long response time and large storage space of the electronic paper display device, and achieves fast response and efficient storage.
Patent Information
- Application Number
- CN202410147926.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-08-01
AI Technical Summary
The existing electronic paper display device needs to store a large amount of waveform information before the dot diagram, resulting in a long response time and large storage space requirements.
The balancing voltage is calculated through the panel driving circuit, and the waveform setting information is only associated with the temperature zone, color and display panel operation stage, reducing the storage amount of the storage circuit and the information call time.
It effectively reduces the response time and storage space requirements before the dot diagram, and improves the response speed of the electronic paper display device.
Smart Images
Figure CN120412486A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electronic paper, and particularly to an electronic paper display device and an operation method thereof. Background Art
[0002] Generally speaking, before an electronic paper display device performs dot mapping, it will first read the display screen information, and based on the display screen information, call the corresponding waveform information to generate a driving waveform through the waveform information, and then use the driving waveform to drive the corresponding pixel units (Pixels).
[0003] However, in order to be able to call the waveform information under different conditions at any time, the electronic paper display device needs to store the waveform information under different conditions. Therefore, the electronic paper display device needs to use a large amount of memory space to store the waveform information. In addition, when calling the waveform information, the electronic paper display device must call the complete waveform information. When there is unnecessary information in the waveform information, it will increase the call time of the electronic paper display device, resulting in a longer response time of the electronic paper display device before dot mapping.
[0004] Therefore, how to effectively reduce the response time and the required storage space before dot mapping is one of the problems that the industry urgently wants to solve. Summary of the Invention
[0005] In order to solve the above technical problems, this application proposes an electronic paper display device and an operation method thereof, which can simplify the amount of waveform setting information and the amount of information that the storage circuit needs to store in advance, reduce the call time of the electronic paper display device for calling information, and the storage capacity of the storage circuit, so as to effectively reduce the response time and the required storage space before dot mapping.
[0006] To achieve the above object, this application proposes an electronic paper display device, which includes a storage circuit, a panel driving circuit, and a display panel. The storage circuit stores vibration waveform setting information, reset waveform setting information, and display waveform setting information. The panel driving circuit is electrically connected to the storage circuit for calculating the balance voltages of multiple colors in multiple temperature zones, and generating a driving waveform based on the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information. The display panel is electrically connected to the panel driving circuit for receiving the driving waveform and the conduction signal. Among them, the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information is associated with the temperature zone, the color, and the operation stage of the display panel.
[0007] To achieve the above object, the present application proposes an operating method for an electronic paper display device, including calculating the balance voltages of multiple colors at multiple temperature zones, generating a driving waveform based on vibration waveform setting information, reset waveform setting information, or display waveform setting information, and outputting the driving waveform and a conduction signal to a display panel. Among them, the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information is associated with the temperature zone, the color, and the operating stage of the display panel.
[0008] Through the above content, based on the electronic paper display device and its operating method proposed in the present application, the balance voltage is calculated by the electronic paper display device without occupying the storage space of the storage circuit. In addition, associating the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information with the temperature zone, the color, and the operating stage of the display panel can simplify the amount of information contained in the waveform setting information. Therefore, the present application can reduce the amount of information in the waveform setting information and the amount of information that the storage circuit needs to pre-store, reduce the calling time for the electronic paper display device to call information, and the storage capacity of the storage circuit, achieving the purpose of effectively reducing the response time and the required storage space before dot mapping. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:
[0010] Figure 1 It is a schematic diagram of an embodiment of the electronic paper display device of the present application.
[0011] Figure 2 It is a schematic diagram of an embodiment of the operating method of the electronic paper display device of the present application.
[0012] Figure 3 It is another schematic diagram of an embodiment of the operating method of the electronic paper display device of the present application.
[0013] Figure 4 It is a schematic diagram of the waveform setting information architecture of the present application.
[0014] Figure 5 It is a schematic diagram of a conventional waveform setting information architecture. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are 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 of the present application without creative efforts shall fall within the protection scope of the present application.
[0016] Please refer to Figure 1 , Figure 1 which is a schematic diagram of an embodiment of an electronic paper display device of the present application. The electronic paper display device 1 includes a panel driving circuit 10, a display panel 20, and a storage circuit 30. The panel driving circuit 10 is electrically connected to the display panel 20 and the storage circuit 30.
[0017] In Figure 1 the embodiment, the display panel 20 includes a plurality of pixel units 21, and each pixel unit 21 is electrically connected to the panel driving circuit 10. Among them, the pixel unit 21 is used to receive the driving waveform Ss, the conduction signal Sg, and the common voltage Vc from the panel driving circuit 10, and perform display based on the driving waveform Ss, the conduction signal Sg, and the common voltage Vc.
[0018] In Figure 1 the embodiment, the storage circuit 30 is used to store a plurality of waveform setting information and its associated information. The waveform setting information includes a plurality of vibration waveform setting information, a plurality of reset waveform setting information, and a plurality of display waveform setting information, and each piece of waveform setting information is associated with a piece of associated information.
[0019] In this embodiment, each piece of waveform setting information includes voltage information, ratio information, and repetition times information. Among them, the voltage information may include the voltage value of the positive voltage or the negative voltage, and the time length of the given voltage. The ratio information may be the power supply ratio of the positive voltage and the negative voltage. For example, the positive voltage is one frame, the negative voltage is one frame, and the repetition times is the repeated execution times set above.
[0020] In this embodiment, each piece of associated information includes information on the temperature range, color, and operation stage of the display panel 20. Among them, the temperature range refers to the temperature interval (for example, the temperature interval is between 10°C and 15°C), the color refers to the color displayed by the pixel unit (for example, black), and the operation stage of the display panel 20 includes the shaking stage, the push-pull stage, and the display stage.
[0021] Furthermore, each piece of waveform setting information and its associated information are used to indicate the voltage information, ratio information, and repetition count information required for the pixel unit 21 to display a specific color in a specific temperature range and at a specific stage. For example, the vibration waveform setting information is used to indicate the voltage information, ratio information, and repetition count information corresponding to a specific color (e.g., black) in the vibration stage in a specific temperature range (e.g., 10°C to 15°C). The reset waveform setting information is used to indicate the voltage information, ratio information, and repetition count information corresponding to a specific color in the reset stage in a specific temperature range. The display waveform setting information is used to indicate the voltage information, ratio information, and repetition count information corresponding to a specific color in the display stage in a specific temperature range.
[0022] In this embodiment, the associated information of each piece of waveform setting information only corresponds to the information of the temperature range, color, and operation stage of the display panel 20. The storage circuit 30 only needs to store the waveform setting information and the corresponding relationship between the waveform setting information and the temperature range, color, and operation stage, reducing the overall amount of information associated with the waveform setting information. At the same time, since the waveform setting information and its associated information have less information content, the waveform setting information and its associated information occupy less storage space in the storage circuit 30. Therefore, the purpose of reducing the storage space required by the storage circuit 30 can be achieved.
[0023] In this embodiment, the storage circuit 30 can be implemented by the internal storage circuit (e.g., memory) of the panel driving circuit 10. In other embodiments, the storage circuit 30 can also be implemented by an external storage circuit (e.g., memory circuit) of the panel driving circuit 10, and the present application is not limited thereto.
[0024] In Figure 1 the embodiment, the panel driving circuit 10 is used to calculate the balanced voltages corresponding to multiple colors in multiple temperature ranges. The panel driving circuit 10 reads the corresponding vibration waveform setting information, reset waveform setting information, or display waveform setting information from the storage circuit 30 based on the image information to be displayed to generate the driving waveform Ss and the corresponding conduction signal Sg.
[0025] Furthermore, in the stage after the electronic paper display device 1 is powered on and before dot mapping, the panel driving circuit 10 calculates the total voltage for each color in each temperature range, and after the maximum or minimum total voltage, updates the balanced voltage information of the color with the maximum or minimum total voltage. In this embodiment, since the balanced voltage is calculated by the panel driving circuit 10, the storage circuit 30 does not need to pre-store or burn the balanced voltage information corresponding to each color in each temperature range, effectively reducing the storage space occupied by the storage circuit 30 and achieving the purpose of reducing the storage space required by the storage circuit 30.
[0026] Further, based on the image information to be displayed, the panel driving circuit 10 calls the vibration waveform setting information, reset waveform setting information, or display waveform setting information stored in the storage circuit 30 according to the current ambient temperature, the color to be displayed by the pixel unit 21, and the operation stage of the display panel 20, and generates a driving waveform Ss corresponding to the pixel unit 21 based on the called waveform setting information. For example, when the display panel 20 operates in the vibration stage, and based on the image information, the pixel unit 21 is used to display black, and the current ambient temperature falls within the first temperature range (for example, 10°C to 15°C), the panel driving circuit 10 determines that the current temperature is in the first temperature range according to the current ambient temperature, and based on the information that the pixel unit 21 displays black and the display panel 20 operates in the vibration stage, calls (searches) the vibration waveform setting information corresponding to the black color in the vibration stage in the first temperature range in the storage circuit 30. In this embodiment, since the panel driving circuit 10 only needs to call the waveform setting information according to the temperature range, color, and operation stage information of the display panel 20, that is, the panel driving circuit 10 can determine the waveform setting information to be called with relatively less information, so the time for the panel driving circuit 10 to call the waveform setting information can be greatly reduced, effectively improving the response speed before dot mapping of the display panel 20.
[0027] In this embodiment, the panel driving circuit 10 can be implemented by an integrated driver chip (All-in-One Driver IC), and the present application is not limited thereto.
[0028] Therefore, the electronic paper display device of the present application calculates the balance voltage of each color in each temperature range by the panel driving circuit 10, and makes the waveform setting information only associated with the temperature range, color, and operation stage information of the display panel 20, so as to greatly reduce the time for the panel driving circuit 10 to call the waveform setting information and the amount of information that the storage circuit needs to store, achieving the purpose of effectively reducing the response time and required storage space before dot mapping.
[0029] According to the above content, the present application further summarizes an operation method of an electronic paper display device. Please refer to Figure 1 and Figure 2 , Figure 2 is a schematic diagram of an embodiment of the operation method of the electronic paper display device of the present application. The electronic paper display device can be implemented by Figure 1 embodiment, and the operation method includes step S100, step S200, and step S300.
[0030] In Figure 2In the embodiment, in step S100, the balance voltages of multiple colors at multiple temperature zones are calculated. In this step, after the electronic paper display device 1 is powered on and before dot mapping, the panel driving circuit 10 calculates the balance voltages of multiple colors at multiple temperature zones and updates the balance voltages of multiple colors at multiple temperature zones.
[0031] In Figure 2 In the embodiment, in step S200, vibration waveform setting information, reset waveform setting information, or display waveform setting information is called, and a driving waveform is generated based on the called waveform setting information.
[0032] In Figure 2 In the embodiment, in step S300, the driving waveform and the corresponding conduction signal are output to the display panel. In this step, the panel driving circuit 10 outputs the driving waveform and the corresponding conduction signal to the display panel 20, so that the pixel unit 21 of the display panel 20 performs display based on the received driving waveform and conduction signal.
[0033] Furthermore, step S200 further includes steps S210 to S250, as Figure 3 shown.
[0034] In Figure 3 In the embodiment, in step S210, the temperature zone is determined. In this step, the panel driving circuit 10 of the electronic paper display device 1 determines the current temperature zone of the electronic paper display device 1 by judging the temperature zone in which the sensed ambient temperature falls according to the sensed ambient temperature.
[0035] In Figure 3 In the embodiment, in step S220, the color is determined. In this step, the panel driving circuit 10 judges the color that the pixel unit 21 desires to display according to the received image information.
[0036] In Figure 3 In the embodiment, in step S230, the operation stage is determined. In this step, the panel driving circuit 10 determines the operation stage that the display panel 20 is ready to execute.
[0037] In Figure 3 In the embodiment, in step S240, the waveform setting information is called. In this step, the panel driving circuit 10 of the electronic paper display device 1 calls the vibration waveform setting information, reset waveform setting information, or display waveform setting information corresponding to the temperature zone, color, and operation stage from the storage circuit 30 based on the temperature zone, color, and operation stage determined in steps S210 to S230.
[0038] In Figure 3In the embodiment, at step S250, a driving waveform is generated. In this step, the panel driving circuit 10 generates a corresponding driving waveform Ss and a conduction signal Sg based on the waveform setting information called in step S250. After completing step S250, the process continues with Figure 2 step S300.
[0039] Please refer to Figure 4 and Figure 5 , Figure 4 which is a schematic diagram of the waveform setting information according to an embodiment of the present application, Figure 5 and Figures 1 to 3 which is a schematic diagram of the conventional waveform setting information. According to Figure 1 the content described above, the waveform setting information of the embodiment of the present application is associated with the information of the temperature zone 100, the color 200, and the operation stage 300. In this embodiment, the temperature zone 100 can be divided into the first temperature zone to the tenth temperature zone, and each temperature zone includes a different temperature range. In this embodiment, the color 200 can be divided into the first color to the fifth color, for example, red, yellow, green, white, and black. In this embodiment, the operation stage 300 is divided into a vibration stage, a reset stage, and a display stage, and each stage is associated with a voltage information, a ratio information, and a repetition number information. Therefore, in this embodiment, the panel driving circuit 10 of the embodiment of the present application (as
[0040] shown) only needs to judge the information of the temperature zone 100, the color 200 to be displayed by the pixel unit 21, and the operation stage 300 of the display panel 20, and then can quickly call (search) the voltage information, the ratio information, and the repetition number information required for display from the storage circuit 30. Figure 5 In Figure 5 , the conventional waveform setting information is associated with not only the information of the temperature zone 100 and the color 200, but also the temperature block 400, the stage 500 (state), and the step 600 (phase). In this embodiment, each temperature zone can be further divided into the first temperature block to the tenth temperature block of the temperature block 400. In this embodiment, the stage 500 is divided into a first stage and a second stage. For example, the first stage can be a pre-stage, and the second stage can be an imaging stage. In this embodiment, each stage can be divided into a first step and a second step, and each step is associated with a voltage information, a ratio information, and a repetition number information. Therefore, in the Figure 5 example, the panel driving circuit needs to judge the information of the temperature zone 100, the color 200 to be displayed by the pixel unit, the temperature block 400, the stage 500, and the step 600 before it can call (search) the voltage information, the ratio information, and the repetition number information required for display. That is, in the Figure 5In the example, the associated information of the waveform setting information includes temperature zone 100, color 200, temperature block 400, stage 500, and step 600. Therefore, the amount of information associated with the waveform setting information is much larger than that in the embodiments of the present application. This will result in occupying a large amount of storage space and increasing the cost of the storage circuit.
[0041] In summary, since the balanced voltage of the electronic paper display device and its operation method of the present application is calculated by the embodiments of the electronic paper display device of the present application, the present application does not need to occupy the storage space of the storage circuit to store the information of the balanced voltage. In addition, the associated information of waveform setting information such as vibration waveform setting information, reset waveform setting information, or display waveform setting information is only associated with the information of the temperature zone, color, and the operation stage of the display panel, which can simplify the amount of information associated with the waveform setting information and reduce the call time of the electronic paper display device to call information. Therefore, the present application can reduce the amount of information of the waveform setting information and the amount of information stored in the storage circuit, effectively reduce the call time of the electronic paper display device to call information and the storage space required by the storage circuit, and achieve the purpose of effectively reducing the response time before dot mapping and the storage space required by the storage circuit.
[0042] It should be noted that in this article, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element.
[0043] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.
Claims
1. An electronic paper display device, characterized in that, including: a storage circuit for storing vibration waveform setting information, reset waveform setting information, and display waveform setting information; a panel driving circuit electrically connected to the storage circuit for calculating balance voltages of multiple colors at multiple temperature zones and generating a driving waveform based on the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information; and a display panel electrically connected to the panel driving circuit for receiving the driving waveform and a conduction signal; wherein the vibration waveform setting information, the reset waveform setting information, and the display waveform setting information are associated with the temperature zone, the color, and the operation stage of the display panel.
2. The electronic paper display device according to claim 1, wherein The panel driving circuit determines to generate the driving waveform with the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information only based on the temperature zone, the color, and the operation stage.
3. The electronic paper display device according to claim 2, wherein The operation stage includes a vibration stage, a reset stage, and a display stage.
4. The electronic paper display device according to claim 1, wherein The storage circuit does not store the balance voltage.
5. The electronic paper display device according to claim 1, characterized in that, The vibration waveform setting information, the reset waveform setting information, or the display waveform setting information includes voltage information, ratio information, and repetition number information.
6. A method for operating an electronic paper display device, characterized in that, comprising: calculating balance voltages of multiple colors at multiple temperature zones; invoking the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information and generating a driving waveform based on the invoked waveform setting information; and outputting the driving waveform and the conduction signal to the display panel; wherein the vibration waveform setting information, the reset waveform setting information, and the display waveform setting information are associated with the temperature zone, the color, and the operation stage of the display panel.
7. The operation method according to claim 6, characterized in that, The step of "invoking the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information and generating a driving waveform based on the invoked waveform setting information" further includes: determining to generate the driving waveform with the vibration waveform setting information, the reset waveform setting information, or the display waveform setting information only based on the temperature zone, the color, and the operation stage.
8. The operating method according to claim 7, characterized in that, The operation stage includes a vibration stage, a reset stage, and a display stage.
9. The operating method according to claim 6, wherein The vibration waveform setting information, the reset waveform setting information, or the display waveform setting information includes voltage information, ratio information, and repetition number information.