Electronic paper picture writing detection method and system

Abstract

The invention discloses an electronic paper picture writing detection method and system, and belongs to the field of electronic paper detection. The method is suitable for a driving control assembly of the electronic paper picture write-in detection system. The electronic paper picture writing detection system further comprises an electronic paper panel, a flexible circuit board and a pixel voltage feedback device. The flexible circuit board and the pixel voltage feedback device are arranged on the electronic paper panel; the electronic paper panel, the flexible circuit board and the pixel voltage feedback device form an electronic paper display screen to be detected; the method comprises the following steps: transmitting a corresponding pixel electrode voltage in a writing process of an electronic paper picture to be written to a pixel voltage feedback device; and under the condition that the high level signal output by the flexible circuit board is detected, the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board is compared with the preset write-in voltage to obtain a detection result. By implementing the method and the device, the problem of low efficiency of picture writing detection in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic paper detection, and particularly to a method and system for detecting the writing of electronic paper pictures. Background Art

[0002] With the deep integration of Internet of Things technology and the display industry, electronic paper has achieved large-scale applications in fields such as smart retail and smart office by virtue of characteristics such as low power consumption, paper-like visual experience, and remote update capabilities. Taking the remote static display scenario as an example, devices such as electronic price tags and table signs access the network through WiFi or Bluetooth, receive instructions from the cloud to complete the picture update, which is not only convenient for remotely controlling the picture update and maintenance, but also reduces energy consumption.

[0003] Although the remote control technology has realized the wireless transmission of picture data, in the scenario of large-scale device deployment, after the update, it is necessary to invest manpower on-site again to confirm whether the picture information is written correctly, which consumes a large amount of manpower and material resources. This inefficient confirmation method seriously hinders the development of intelligent networking of electronic paper. Summary of the Invention

[0004] Embodiments of the present invention provide a method and system for detecting the writing of electronic paper pictures, which can effectively solve the problem that the prior art requires manual confirmation of whether the electronic paper pictures are written correctly, consuming a large amount of manpower and material resources.

[0005] An embodiment of the present invention provides a method for detecting the writing of electronic paper pictures, which is applicable to a drive control component of an electronic paper picture writing detection system; the electronic paper picture writing detection system further includes: an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are disposed on the electronic paper panel; the electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form an electronic paper display screen to be detected; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device;

[0006] The method for detecting the writing of electronic paper pictures includes:

[0007] During the process of writing a to-be-written electronic paper picture into the electronic paper display screen to be detected, the pixel electrode voltage corresponding to the writing of the to-be-written electronic paper picture is transmitted to the pixel voltage feedback device through the electronic paper display screen to be detected, so that the pixel voltage feedback device receives the pixel electrode voltage corresponding to the writing of the to-be-written electronic paper picture;

[0008] After the to-be-written electronic paper picture is written, detect the high-level signal transmitted by the flexible circuit board;

[0009] In the case of detecting a high-level signal transmitted by the flexible circuit board, receive the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board;

[0010] Compare the pixel electrode voltage with a preset writing voltage of the electronic paper picture to be written, and obtain a detection result of the electronic paper display screen to be detected.

[0011] Further, the electronic paper picture writing detection system further includes: a plurality of gate scan lines and a plurality of data voltage transmission lines; the gate scan lines and the data voltage transmission lines divide the electronic paper display screen to be detected into a plurality of display pixel regions;

[0012] The pixel voltage feedback device includes a virtual pixel region; the virtual pixel region of the pixel voltage feedback device is connected to a display pixel region of the electronic paper display screen to be detected;

[0013] Transmitting the pixel electrode voltage corresponding to the electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display screen to be detected includes:

[0014] Convert the electronic paper picture to be written into a digital electrical signal;

[0015] Transmit the pixel electrode voltage corresponding to the digital electrical signal to the virtual pixel region of the pixel voltage feedback device through a display pixel region of the electronic paper display screen to be detected.

[0016] Further, the pixel voltage feedback device further includes: a thin film transistor, a gate control line, and a pixel voltage feedback line; the thin film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel region is connected to the flexible circuit board through the thin film transistor; the transistor gate of the thin film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin film transistor is connected to the virtual pixel region, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line.

[0017] Further, in the case of detecting a high-level signal transmitted by the flexible circuit board, receiving the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board includes:

[0018] In the case of detecting a high-level signal transmitted by the flexible circuit board, transmit the high-level signal to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, transmit the pixel electrode voltage to the flexible circuit board through the transistor drain, the transistor source, and the pixel voltage feedback line in sequence;

[0019] Receive the pixel electrode voltage transmitted by the flexible circuit board.

[0020] Further, compare the pixel electrode voltage with a preset writing voltage for an electronic paper picture to be written, and obtain a detection result of the electronic paper display screen to be detected, including:

[0021] Compare the pixel electrode voltage with a preset writing voltage for an electronic paper picture to be written, and determine whether the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range;

[0022] When the difference between the pixel electrode voltage and the preset writing voltage is within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is normal writing;

[0023] When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is abnormal writing.

[0024] As an improvement of the above solution, another embodiment of the present invention correspondingly provides an electronic paper picture writing detection system, a drive control component, an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are arranged on the electronic paper panel; the electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form an electronic paper display screen to be detected; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device;

[0025] The drive control component is configured to transmit, during the process of writing an electronic paper picture to be written into the electronic paper display screen to be detected, the pixel electrode voltage corresponding to the time of writing the electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display screen to be detected;

[0026] The electronic paper display screen to be detected is configured to transmit the pixel electrode voltage corresponding to the time of writing the electronic paper picture to be written to the pixel voltage feedback device;

[0027] The pixel voltage feedback device is configured to receive, through the electronic paper display screen to be detected, the pixel electrode voltage corresponding to the time of writing the electronic paper picture to be written;

[0028] The flexible circuit board is configured to transmit a high-level signal output by the drive control component after the writing of the electronic paper picture to be written is completed;

[0029] The drive control component is further configured to output a high-level signal after the writing of the electronic paper picture to be written is completed;

[0030] The pixel voltage feedback device is further configured to be turned on when a high-level signal transmitted by the flexible circuit board is detected, and transmit the pixel electrode voltage to the flexible circuit board;

[0031] The flexible circuit board is further configured to receive the pixel electrode voltage transmitted by the pixel voltage feedback device; and transmit the pixel electrode voltage to the drive control component;

[0032] The drive control component is further configured to receive the pixel electrode voltage transmitted by the flexible circuit board; and compare the pixel electrode voltage with a preset writing voltage of an electronic paper picture to be written to obtain a detection result of the electronic paper display screen to be detected.

[0033] Further, it further includes: a plurality of gate scan lines and a plurality of data voltage transmission lines; the gate scan lines and the data voltage transmission lines divide the electronic paper display screen to be detected into a plurality of display pixel regions;

[0034] The pixel voltage feedback device includes a virtual pixel region; the virtual pixel region of the pixel voltage feedback device is connected to a display pixel region of the electronic paper display screen to be detected;

[0035] The drive control component is configured to transmit the pixel electrode voltage corresponding to when writing an electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display screen to be detected, including:

[0036] Converting the electronic paper picture to be written into a digital electrical signal;

[0037] Transmitting the pixel electrode voltage corresponding to the digital electrical signal through a display pixel region of the electronic paper display screen to be detected to the virtual pixel region of the pixel voltage feedback device.

[0038] Further, the pixel voltage feedback device further includes: a thin-film transistor, a gate control line, and a pixel voltage feedback line; the thin-film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel region is connected to the flexible circuit board through the thin-film transistor; the transistor gate of the thin-film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin-film transistor is connected to the virtual pixel region, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line.

[0039] Further, the drive control component is configured to receive the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board when detecting a high-level signal transmitted by the flexible circuit board, including:

[0040] In the case of detecting a high-level signal transmitted by the flexible circuit board, the high-level signal is transmitted to the transistor gate of the thin-film transistor through the gate control line, so that the thin-film transistor is turned on and, after being turned on, the pixel electrode voltage is transmitted to the flexible circuit board in sequence through the transistor drain, the transistor source, and the pixel voltage feedback line;

[0041] Receive the pixel electrode voltage transmitted by the flexible circuit board.

[0042] Further, the driving control component is configured to compare the pixel electrode voltage with a preset writing voltage of an electronic paper picture to be written, and obtain a detection result of the electronic paper display to be detected, including:

[0043] Compare the pixel electrode voltage with the preset writing voltage of the electronic paper picture to be written, and determine whether the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range;

[0044] When the difference between the pixel electrode voltage and the preset writing voltage is within the preset threshold range, determine that the detection result of the electronic paper display to be detected is normal writing;

[0045] When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, determine that the detection result of the electronic paper display to be detected is abnormal writing.

[0046] By implementing the present invention, at least the following beneficial effects are achieved:

[0047] The present invention provides an electronic paper image writing detection method and system. The method is applicable to a drive control component of an electronic paper image writing detection system. The electronic paper image writing detection system further includes: an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device. The flexible circuit board and the pixel voltage feedback device are disposed on the electronic paper panel. The electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form a to-be-detected electronic paper display screen. The drive control component is connected to the electronic paper panel and the flexible circuit board. The flexible circuit board is connected to the pixel voltage feedback device. During the process of writing a to-be-written electronic paper image into the to-be-detected electronic paper display screen, the pixel electrode voltage corresponding to the writing of the to-be-written electronic paper image is transmitted to the pixel voltage feedback device through the to-be-detected electronic paper display screen, so that the pixel voltage feedback device receives the pixel electrode voltage corresponding to the writing of the to-be-written electronic paper image. After the writing of the to-be-written electronic paper image is completed, a high-level signal transmitted by the flexible circuit board is detected. When the high-level signal transmitted by the flexible circuit board is detected, the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board is received. According to a comparison between the pixel electrode voltage and a preset writing voltage of the to-be-written electronic paper image, a detection result of the to-be-detected electronic paper display screen is obtained. By transmitting the pixel electrode voltage corresponding to the writing of the to-be-written electronic paper image to the pixel voltage feedback device, and then transmitting the pixel electrode voltage to the drive control component through the flexible circuit board by the pixel voltage feedback device for comparison with the preset writing voltage of the to-be-written electronic paper image, it is possible to avoid manual running around between various device points, and there is no need for manual on-site confirmation one by one. Instead, the corresponding pixel electrode voltage can be transmitted through the pixel voltage feedback device, and the detection of the to-be-detected electronic paper display screen can be realized in a short time, reducing the time cost and labor cost, and greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 FIG. 6 is a flowchart of an electronic paper image writing detection method provided by an embodiment of the present invention;

[0049] Figure 2 FIG. 10 is a schematic structural diagram of an electronic paper image writing detection system provided by an embodiment of the present invention;

[0050] Figure 3 FIG. 14 is a schematic diagram of an existing electronic paper display screen provided by the present invention;

[0051] Figure 4 FIG. 18 is a flowchart of an electronic paper image display provided by the present invention;

[0052] Figure 5 FIG. 22 is a schematic diagram of a new electronic paper panel with added dummy pixels provided by an embodiment of the present invention;

[0053] Figure 6 is a schematic diagram of pixel equivalence provided by an embodiment of the present invention;

[0054] Figure 7 is a schematic diagram of thin-film transistor equivalence provided by an embodiment of the present invention;

[0055] Figure 8 is a timing diagram of the pixel voltage feedback device for obtaining the dummy pixel voltage provided by an embodiment of the present invention;

[0056] Figure 9 is a schematic diagram of the electronic paper picture writing detection process provided by another embodiment of the present invention;

[0057] Figure 10 is a schematic diagram of the structure of the electronic paper display module provided by an embodiment of the present invention. Detailed implementation manners

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] See Figure 1 , to solve the problem in the prior art that it is necessary to manually confirm whether the electronic paper picture is written correctly, which consumes manpower and material resources. An embodiment of the present invention provides a schematic diagram of the process of an electronic paper picture writing detection method. The method is applicable to the drive control component of the electronic paper picture writing detection system; the electronic paper picture writing detection system further includes: an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are disposed on the electronic paper panel; the electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form an electronic paper display screen to be detected; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device;

[0060] In a preferred embodiment of the present invention, as Figure 2As shown in the figure, the electronic paper image writing detection system includes: 1 driving control component, 2 electronic paper panel, 3 flexible circuit board, 4 pixel voltage feedback device, 5 gate scan line, 6 data voltage transmission line, 41 virtual pixel area, 42 thin film transistor, 43 gate control line, 44 pixel voltage feedback line, 421 transistor gate, 422 transistor source, and 423 transistor drain. Among them, the green lines G1, G2, G3, G4, G5, and G6 respectively represent different gate scan lines; the yellow lines D1, D2, D3, and D4 respectively represent different data voltage transmission lines.

[0061] The electronic paper image writing detection method includes:

[0062] S1. During the process of writing the electronic paper image to be written to the electronic paper display screen to be detected, the pixel electrode voltage corresponding to the writing of the electronic paper image to be written is transmitted to the pixel voltage feedback device through the electronic paper display screen to be detected, so that the pixel voltage feedback device receives the pixel electrode voltage corresponding to the writing of the electronic paper image to be written.

[0063] In a preferred embodiment of the present invention, when starting the image writing program, it takes one frame or several frames of time to write the electronic paper image to be written to the electronic paper display screen to be detected. During the writing process, since the pixel voltage feedback device is connected to the flexible circuit board, and the flexible circuit board is one of the components of the electronic paper display screen to be detected, the pixel voltage feedback device can synchronously receive the same electrical signals and voltages as the electronic paper display screen to be detected. Therefore, during the process of writing the electronic paper image to be written to the electronic paper display screen to be detected, the driving control component transmits the pixel electrode voltage corresponding to the writing of the electronic paper image to be written to the pixel voltage feedback device through the electronic paper display screen to be detected. At this time, the pixel voltage feedback device synchronously receives the pixel electrode voltage corresponding to the writing of the electronic paper image to be written.

[0064] Specifically, the electronic paper image writing detection system further includes: several gate scan lines and several data voltage transmission lines; the gate scan lines and the data voltage transmission lines divide the electronic paper display screen to be detected into several display pixel areas;

[0065] The pixel voltage feedback device includes a virtual pixel area; the virtual pixel area of the pixel voltage feedback device is connected to a display pixel area of the electronic paper display screen to be detected;

[0066] Transmitting the pixel electrode voltage corresponding to the writing of the electronic paper image to be written to the pixel voltage feedback device through the electronic paper display screen to be detected includes:

[0067] Converting the electronic paper image to be written into a digital electrical signal;

[0068] Transfer the pixel electrode voltage corresponding to the digital electrical signal through a display pixel area of the electronic paper display to be detected to the virtual pixel area of the pixel voltage feedback device.

[0069] In a preferred embodiment of the present invention, drive the digital electrical signal to be distributed to the electronic paper display to be detected according to a preset writing voltage, so that the electronic paper display to be detected writes the electronic paper picture to be written into the electronic paper display to be detected according to the digital electrical signal and the preset writing voltage. As Figure 3 shown, the schematic diagram of the existing electronic paper display only includes an IC (driver chip), an FPC (flexible printed circuit board), a gate scan line, and a data voltage transmission line. The process of the end user converting a picture into an electronic paper display picture is as Figure 4 shown. The terminal picture data is input, then the picture data is decoded into a digital electrical signal by a processor, the digital electrical signal is input into the driver chip, and the driver chip distributes the digital electrical signal to each pixel in the electronic paper display, and the writing voltage drives the movement of the electronic particles of the electronic paper film to realize the display of the electronic paper picture. After the electronic paper writes the picture information, there is no function or module design on the electronic paper panel to remotely feedback whether the picture data is successfully written, and it is impossible to know whether the electronic paper display successfully writes the data.

[0070] In a preferred embodiment of the present invention, for the electronic paper display to be detected, the common resolution is m*n, that is, m rows of gate scan lines and n rows of data voltage transmission lines divide the electronic paper display to be detected into several display pixel areas. The pixel voltage feedback device includes a virtual pixel area. As Figure 5 shown, the virtual pixel area of the pixel voltage feedback device is connected to a display pixel area of the electronic paper display to be detected. Taking m = 6 and n = 4 as an example, connect the display pixel area in the 6th row and 4th column of the electronic paper display to be detected to the virtual pixel area of the pixel voltage feedback device. The virtual pixel area of the pixel voltage feedback device shares the electrical signal of the display pixel area in the 6th row and 4th column of the electronic paper display to be detected, that is, it is equivalent to adding an additional virtual pixel (dummy pixel) at the position of the display pixel area in the 6th row and 4th column. This design adds a pixel voltage feedback device on the electronic paper panel. Without adding additional scan lines and data lines, it can ensure that the dummy pixel obtains the same electrical signal as the pixel in the display pixel area in the 6th row and 4th column, greatly simplifying the circuit structure and reducing the cost and design complexity.

[0071] When writing the electronic paper image to be written, the driving and controlling component converts the electronic paper image to be written into a digital electrical signal; then the pixel electrode voltage corresponding to the digital electrical signal is transmitted to the virtual pixel region of the pixel voltage feedback device through a display pixel region of the electronic paper display to be detected, ensuring that the pixel electrode voltage obtained by the virtual pixel region of the pixel voltage feedback device is the same as the pixel electrode voltage obtained by the display pixel region of the electronic paper display to be detected.

[0072] S2. After the electronic paper image to be written is written, detect the high-level signal transmitted by the flexible circuit board;

[0073] In a preferred embodiment of the present invention, the flexible circuit board is an FPC. Since the flexible circuit board is connected to the driving and controlling component, after the electronic paper image to be written is written to the electronic paper display to be detected, the driving and controlling component can detect the high-level signal transmitted by the flexible circuit board. Since the virtual pixel region and the pixel corresponding to the m-th row and n-th column of the display pixel region share the gate scanning line and the data voltage transmission line, when the voltage of the m-th row scanning line in the display region is high, the dummy pixel (the pixel in the virtual pixel region) and the pixel transistor corresponding to the m-th row and n-th column in the display region are turned on, and both write voltages through the n-th column data line at the same time. Specifically, the schematic diagram of the pixel equivalent circuit is as Figure 6 shown, including the pixel gate scanning line Gm (i.e., the gate scanning line) and the data voltage transmission line Dn; the schematic diagram of the thin film transistor equivalent circuit in the pixel is as Figure 7 shown, including the 421 transistor gate, the 422 transistor source, and the 423 transistor drain. When the gate scanning line electrical signal is high, the thin film transistor in the pixel is turned on, and the data voltage transmission line starts to write the data voltage to the pixel electrode through the thin film transistor drain and source. The dummy pixel also obtains the pixel electrode voltage according to the same principle. After the image writing process is completed, the FPC transmits a high-level signal. At the same time, the original source of the high-level signal can be the driving and controlling component or the external driving component PCB circuit board, which is not limited in this embodiment. Since the FPC is only connected to the driving and controlling component and the PCB circuit board, the FPC only plays the role of transmitting high and low level signals.

[0074] S3. In the case of detecting the high-level signal transmitted by the flexible circuit board, receive the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board;

[0075] In a preferred embodiment of the present invention, after the pixel voltage feedback device receives the pixel electrode voltage, when the driving control component detects the high-level signal transmitted by the flexible circuit board, the pixel voltage feedback device is turned on. Then, the pixel voltage feedback device transmits the pixel electrode voltage to the flexible circuit board, and subsequently, the flexible circuit board transmits the pixel electrode voltage to the driving control component. At this time, the driving control component receives the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board.

[0076] Specifically, the pixel voltage feedback device further includes: a thin film transistor, a gate control line, and a pixel voltage feedback line; the thin film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel region is connected to the flexible circuit board through the thin film transistor; the transistor gate of the thin film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin film transistor is connected to the virtual pixel region, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line. This designed connection method lays a hardware foundation for subsequent voltage feedback and detection work.

[0077] Specifically, when detecting the high-level signal transmitted by the flexible circuit board, receiving the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board includes:

[0078] When detecting the high-level signal transmitted by the flexible circuit board, transmitting the high-level signal to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, transmits the pixel electrode voltage to the flexible circuit board in sequence through the transistor drain, the transistor source, and the pixel voltage feedback line;

[0079] Receiving the pixel electrode voltage transmitted by the flexible circuit board.

[0080] In a preferred embodiment of the present invention, when the driving control component detects the high-level signal transmitted by the flexible circuit board, it transmits the high-level signal to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, transmits the pixel electrode voltage to the flexible circuit board in sequence through the transistor drain, the transistor source, and the pixel voltage feedback line. At this time, since the flexible circuit board is connected to the pixel voltage feedback device through the pixel voltage feedback line, it can receive the pixel electrode voltage. Then, the driving control component controls the flexible circuit board to transmit the pixel electrode voltage to the driving control component and receives the pixel electrode voltage transmitted by the flexible circuit board.

[0081] S4. Compare the pixel electrode voltage with the preset writing voltage of the electronic paper image to be written, and obtain the detection result of the electronic paper display screen to be detected.

[0082] In a preferred embodiment of the present invention, when the electronic paper image to be written is being written, the driving control component drives the movement of the electronic particles of the electronic paper film according to the preset writing voltage. Therefore, the driving control component has information about the preset writing voltage. At this time, by comparing the received pixel electrode voltage with the preset writing voltage, the detection result of the electronic paper display screen to be detected can be obtained.

[0083] Preferably, comparing the pixel electrode voltage with the preset writing voltage of the electronic paper image to be written to obtain the detection result of the electronic paper display screen to be detected includes:

[0084] Compare the pixel electrode voltage with the preset writing voltage of the electronic paper image to be written, and determine whether the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range;

[0085] When the difference between the pixel electrode voltage and the preset writing voltage is within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is normal writing;

[0086] When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is abnormal writing.

[0087] In a preferred embodiment of the present invention, compare the pixel electrode voltage with the preset writing voltage of the electronic paper image to be written, and determine whether the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range; when the difference between the pixel electrode voltage and the preset writing voltage is within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is normal writing; when the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, determine that the detection result of the electronic paper display screen to be detected is abnormal writing. The preset threshold range is a range. When within the preset threshold range, it is considered that the detection result of the electronic paper display screen to be detected is normal writing, and when exceeding the preset threshold range, it is considered that the detection result of the electronic paper display screen to be detected is abnormal writing. For example, if the detected pixel electrode voltage is 15V and the expected writing voltage is 15V, it indicates that the image writing of the electronic paper display screen to be detected is normal; if the detected pixel electrode voltage is 0 or there is no feedback, at this time, the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, that is, it exceeds the preset threshold range, indicating that the image writing of the electronic paper display screen to be detected is abnormal. Figure 8It is a timing schematic diagram for obtaining the pixel electrode voltage. Through comparison, it can remotely determine whether the writing of the electronic paper display to be detected is normal or abnormal. It can detect the picture writing state of the electronic paper display in real time and accurately, locate abnormal electronic paper products, and can feedback error information to the background through the wireless communication module for merchants to process in time to ensure the accurate display of product information.

[0088] In another preferred embodiment of the present invention, the pixel electrode voltage can also be transmitted to the external PCB circuit board detection circuit through the FPC for comparison and detection, and this embodiment is not limited. As Figure 9 shown, after the picture is written to the electronic paper display, the thin film transistor of the pixel voltage feedback device is turned on, and the dummy pixel voltage (i.e., the pixel electrode voltage) is transmitted to the external PCB circuit board detection circuit (or the drive control component) to determine whether the writing is normal. If the writing is abnormal, the maintenance personnel can be notified to maintain or replace the electronic paper screen module, improving the efficiency of electronic paper detection.

[0089] In a preferred embodiment of the present invention, as Figure 10 shown, the entire electronic paper display module to be detected includes a drive control component (IC), an electronic paper panel (TFT panel), a flexible printed circuit board (FPC), and a pixel voltage feedback device. The pixel voltage feedback device is integrated into the electronic paper panel of the electronic paper display to be detected and is integrated with the electronic paper panel. Therefore, the electronic paper display to be detected can complete detection and feedback independently. At the same time, as Figure 10 (a) shown, the entire electronic paper display module further includes a display area, an electronic paper film (FPL), a protective film (PS), and there is also an external PCB circuit board connected to the TFT panel through the FPC. As Figure 10 (b) shown, the cross-sectional view of the electronic paper display module to be detected can more intuitively show the layout positions of each component. The edge sealant, display area, protective film (PS), electronic paper film (FPL), drive control component (drive chip, IC), and FPC are integrated on the TFT panel. The TFT panel can also be connected to the PCB through the FPC.

[0090] By implementing this embodiment, the pixel electrode voltage corresponding to the electronic paper picture to be written is transmitted to the pixel voltage feedback device, and then the pixel electrode voltage is transmitted to the drive control component through the flexible printed circuit board by the pixel voltage feedback device, and compared with the preset writing voltage of the electronic paper picture to be written, avoiding the need for manual running around between various device points and eliminating the need for manual on-site confirmation one by one. The corresponding pixel electrode voltage can be transmitted through the pixel voltage feedback device, and the detection of the electronic paper display to be detected can be realized in a short time, reducing the time cost and labor cost, and greatly improving the detection efficiency.

[0091] SeeFigure 2 , which is a schematic structural diagram of an electronic paper image writing detection system provided by an embodiment of the present invention, includes: a drive control component, an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are disposed on the electronic paper panel; the electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form a to-be-detected electronic paper display screen; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device;

[0092] The drive control component is configured to, during the process of writing a to-be-written electronic paper image into the to-be-detected electronic paper display screen, transmit the pixel electrode voltage corresponding to the to-be-written electronic paper image to the pixel voltage feedback device through the to-be-detected electronic paper display screen;

[0093] The to-be-detected electronic paper display screen is configured to transmit the pixel electrode voltage corresponding to the to-be-written electronic paper image to the pixel voltage feedback device;

[0094] The pixel voltage feedback device is configured to receive the pixel electrode voltage corresponding to the to-be-written electronic paper image through the to-be-detected electronic paper display screen;

[0095] The flexible circuit board is configured to transmit the high-level signal output by the drive control component after the to-be-written electronic paper image is written;

[0096] The drive control component is further configured to output a high-level signal after the to-be-written electronic paper image is written;

[0097] The pixel voltage feedback device is further configured to be turned on when detecting the high-level signal transmitted by the flexible circuit board, and transmit the pixel electrode voltage to the flexible circuit board;

[0098] The flexible circuit board is further configured to receive the pixel electrode voltage transmitted by the pixel voltage feedback device; and transmit the pixel electrode voltage to the drive control component;

[0099] The drive control component is further configured to receive the pixel electrode voltage transmitted by the flexible circuit board; and compare the pixel electrode voltage with the preset writing voltage of the to-be-written electronic paper image to obtain the detection result of the to-be-detected electronic paper display screen.

[0100] Preferably, it further includes: a plurality of gate scan lines and a plurality of data voltage transmission lines; the gate scan lines and the data voltage transmission lines divide the to-be-detected electronic paper display screen into a plurality of display pixel regions;

[0101] The pixel voltage feedback device includes a virtual pixel area; the virtual pixel area of the pixel voltage feedback device is connected to a display pixel area of the electronic paper display to be detected;

[0102] The drive control component is used to transmit the pixel electrode voltage corresponding to when writing an electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display to be detected, and includes:

[0103] Convert the electronic paper picture to be written into a digital electrical signal;

[0104] Transmit the pixel electrode voltage corresponding to the digital electrical signal to the virtual pixel area of the pixel voltage feedback device through a display pixel area of the electronic paper display to be detected.

[0105] Preferably, the pixel voltage feedback device further includes: a thin film transistor, a gate control line, and a pixel voltage feedback line; the thin film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel area is connected to the flexible circuit board through the thin film transistor; the transistor gate of the thin film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin film transistor is connected to the virtual pixel area, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line.

[0106] Specifically, the drive control component is used to receive the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board when detecting a high-level signal transmitted by the flexible circuit board, and includes:

[0107] When detecting a high-level signal transmitted by the flexible circuit board, transmit the high-level signal to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, transmit the pixel electrode voltage to the flexible circuit board through the transistor drain, the transistor source, and the pixel voltage feedback line in sequence;

[0108] Receive the pixel electrode voltage transmitted by the flexible circuit board.

[0109] Specifically, the drive control component is used to compare the pixel electrode voltage with a preset writing voltage of the electronic paper picture to be written to obtain a detection result of the electronic paper display to be detected, and includes:

[0110] Compare the pixel electrode voltage with the preset writing voltage of the electronic paper picture to be written, and judge whether the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range;

[0111] When the difference between the pixel electrode voltage and the preset writing voltage is within the preset threshold range, it is determined that the detection result of the electronic paper display to be detected is normal writing;

[0112] When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, it is determined that the detection result of the electronic paper display to be detected is abnormal writing.

[0113] The present invention provides an electronic paper picture writing detection system, including: a driving control component, an electronic paper panel, a flexible circuit board, and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are arranged on the electronic paper panel; the electronic paper panel, the flexible circuit board, and the pixel voltage feedback device form an electronic paper display to be detected; the driving control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device; the driving control component is configured to transmit the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display to be detected during the process of writing the electronic paper picture to be written to the electronic paper display to be detected; the electronic paper display to be detected is configured to transmit the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written to the pixel voltage feedback device; the pixel voltage feedback device is configured to receive the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written through the electronic paper display to be detected; the flexible circuit board is configured to transmit the high-level signal output by the driving control component after the writing of the electronic paper picture to be written is completed; the driving control component is further configured to output a high-level signal after the writing of the electronic paper picture to be written is completed; the pixel voltage feedback device is further configured to be turned on when detecting the high-level signal transmitted by the flexible circuit board, and transmit the pixel electrode voltage to the flexible circuit board; the flexible circuit board is further configured to receive the pixel electrode voltage transmitted by the pixel voltage feedback device; and transmit the pixel electrode voltage to the driving control component; the driving control component is further configured to receive the pixel electrode voltage transmitted by the flexible circuit board; and compare the pixel electrode voltage with the preset writing voltage of the electronic paper picture to be written to obtain the detection result of the electronic paper display to be detected.

[0114] By transmitting the pixel electrode voltage corresponding to the electronic paper image to be written to the pixel voltage feedback device, and then transmitting the pixel electrode voltage to the drive control component through the flexible circuit board by the pixel voltage feedback device, and comparing it with the preset writing voltage of the electronic paper image to be written, it is possible to avoid manual running around between various device points. Without the need for manual on-site confirmation one by one, the corresponding pixel electrode voltage can be transmitted through the pixel voltage feedback device, and the detection of the electronic paper display to be detected can be realized in a short time, reducing the time cost and labor cost, and greatly improving the detection efficiency.

[0115] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A method for detecting writing of an electronic paper image, characterized in that: A drive control component applicable to an electronic paper picture writing detection system; the electronic paper picture writing detection system further comprises: an electronic paper panel, a flexible circuit board and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are arranged on the electronic paper panel; the electronic paper panel, the flexible circuit board and the pixel voltage feedback device constitute an electronic paper display screen to be detected; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device; The electronic paper picture writing detection method comprises: During the process of writing the electronic paper picture to be written into the electronic paper display screen to be detected, the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written is transmitted to the pixel voltage feedback device through the electronic paper display screen to be detected, so that the pixel voltage feedback device receives the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written; After the electronic paper image to be written is completed, detecting the high level signal transmitted by the flexible circuit board; In the case of detecting a high level signal transmitted by the flexible circuit board, receiving the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board; A comparison is performed based on the pixel electrode voltage and a preset write voltage of the electronic paper image to be written, so as to obtain a detection result of the electronic paper display screen to be detected.

2. The electronic paper picture writing detection method according to claim 1, characterized in that: The electronic paper picture writing detection system further includes: a plurality of gate scanning lines and a plurality of data voltage transmission lines; the gate scanning lines and the data voltage transmission lines divide the electronic paper display screen to be detected into a plurality of display pixel areas; The pixel voltage feedback device comprises a virtual pixel region; the virtual pixel region of the pixel voltage feedback device is connected to a display pixel region of the electronic paper display screen to be detected; The pixel electrode voltage corresponding to the electronic paper image to be written is transmitted to the pixel voltage feedback device through the electronic paper display screen to be detected, including: Convert the image to be written into the electronic paper into a digital electrical signal; The pixel electrode voltage corresponding to the digital electrical signal is transmitted to the virtual pixel area of ​​the pixel voltage feedback device through a display pixel area of ​​the electronic paper display screen to be detected.

3. The electronic paper picture writing detection method according to claim 2, characterized in that: The pixel voltage feedback device also includes: a thin film transistor, a gate control line, and a pixel voltage feedback line; the thin film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel area is connected to the flexible circuit board through the thin film transistor; the transistor gate of the thin film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin film transistor is connected to the virtual pixel area, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line.

4. The electronic paper picture writing detection method as claimed in claim 3, characterized in that: In the case where a high level signal transmitted by the flexible circuit board is detected, receiving the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board comprises: When a high-level signal transmitted by the flexible circuit board is detected, the high-level signal is transmitted to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, the pixel electrode voltage is transmitted to the flexible circuit board in sequence through the transistor drain, the transistor source and the pixel voltage feedback line; The pixel electrode voltage transmitted by the flexible circuit board is received.

5. The electronic paper picture writing detection method according to claim 4, characterized in that: The pixel electrode voltage is compared with a preset write voltage of the electronic paper image to be written, and a detection result of the electronic paper display screen to be detected is obtained, including: Comparing the pixel electrode voltage with a preset write voltage of the electronic paper image to be written, determining whether a difference between the pixel electrode voltage and the preset write voltage is within a preset threshold range; When the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range, determining that the detection result of the electronic paper display screen to be detected is that the writing is normal; When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, it is determined that the detection result of the electronic paper display screen to be detected is a writing abnormality.

6. An electronic paper picture writing detection system, characterized in that: include: A drive control component, an electronic paper panel, a flexible circuit board and a pixel voltage feedback device; the flexible circuit board and the pixel voltage feedback device are arranged on the electronic paper panel; the electronic paper panel, the flexible circuit board and the pixel voltage feedback device constitute an electronic paper display screen to be detected; the drive control component is connected to the electronic paper panel and the flexible circuit board; the flexible circuit board is connected to the pixel voltage feedback device; The driving control component is used to transmit the pixel electrode voltage corresponding to the writing of the electronic paper picture to be written to the pixel voltage feedback device through the electronic paper display screen to be detected during the process of writing the electronic paper picture to be written into the electronic paper display screen to be detected; The electronic paper display screen to be detected is used to transmit the pixel electrode voltage corresponding to the electronic paper picture to be written when it is written to the pixel voltage feedback device; The pixel voltage feedback device is used to receive the pixel electrode voltage corresponding to the electronic paper image to be written when it is written through the electronic paper display screen to be detected; The flexible circuit board is used to transmit the high-level signal output by the driving control component after the electronic paper image to be written is completed; The driving control component is also used to output a high level signal after the electronic paper image to be written is completed; The pixel voltage feedback device is further used to turn on when a high level signal transmitted by the flexible circuit board is detected, and transmit the pixel electrode voltage to the flexible circuit board; The flexible circuit board is further used to receive the pixel electrode voltage transmitted by the pixel voltage feedback device; and transmit the pixel electrode voltage to the drive control component; The drive control component is also used to receive the pixel electrode voltage transmitted by the flexible circuit board; and compare the pixel electrode voltage with a preset write voltage of the electronic paper image to be written to obtain a detection result of the electronic paper display to be detected.

7. An electronic paper picture writing detection system as claimed in claim 6, characterized in that: Also includes: A plurality of gate scanning lines and a plurality of data voltage transmission lines; the gate scanning lines and the data voltage transmission lines divide the electronic paper display screen to be detected into a plurality of display pixel areas; The pixel voltage feedback device comprises a virtual pixel region; the virtual pixel region of the pixel voltage feedback device is connected to a display pixel region of the electronic paper display screen to be detected; The driving control component is used to transmit the pixel electrode voltage corresponding to the electronic paper image to be written to the pixel voltage feedback device through the electronic paper display screen to be detected, and includes: Convert the image to be written into the electronic paper into a digital electrical signal; The pixel electrode voltage corresponding to the digital electrical signal is transmitted to the virtual pixel area of ​​the pixel voltage feedback device through a display pixel area of ​​the electronic paper display screen to be detected.

8. The electronic paper picture writing detection system as claimed in claim 7, characterized in that: The pixel voltage feedback device also includes: a thin film transistor, a gate control line, and a pixel voltage feedback line; the thin film transistor includes: a transistor gate, a transistor source, and a transistor drain; the virtual pixel area is connected to the flexible circuit board through the thin film transistor; the transistor gate of the thin film transistor is connected to the flexible circuit board through the gate control line; one end of the transistor source of the thin film transistor is connected to the virtual pixel area, and the other end of the transistor source is connected to the flexible circuit board through the pixel voltage feedback line.

9. The electronic paper picture writing detection system as claimed in claim 8, characterized in that: The driving control component is used to receive the pixel electrode voltage transmitted by the pixel voltage feedback device through the flexible circuit board when a high level signal transmitted by the flexible circuit board is detected, and includes: When a high-level signal transmitted by the flexible circuit board is detected, the high-level signal is transmitted to the transistor gate of the thin film transistor through the gate control line, so that the thin film transistor is turned on and after being turned on, the pixel electrode voltage is transmitted to the flexible circuit board in sequence through the transistor drain, the transistor source and the pixel voltage feedback line; The pixel electrode voltage transmitted by the flexible circuit board is received.

10. An electronic paper picture writing detection system as claimed in claim 9, characterized in that: The driving control component is used to compare the pixel electrode voltage with the preset writing voltage of the electronic paper image to be written to obtain the detection result of the electronic paper display screen to be detected, including: Comparing the pixel electrode voltage with a preset write voltage of the electronic paper image to be written, determining whether a difference between the pixel electrode voltage and the preset write voltage is within a preset threshold range; When the difference between the pixel electrode voltage and the preset writing voltage is within a preset threshold range, determining that the detection result of the electronic paper display screen to be detected is that the writing is normal; When the difference between the pixel electrode voltage and the preset writing voltage is not within the preset threshold range, it is determined that the detection result of the electronic paper display screen to be detected is a writing abnormality.

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