Display panel, pixel pre-charging method, electronic device and readable medium
By designing processing and conversion modules in the display panel and controlling the polarity reversal of the data signal, the problem of the first or first few rows of pixels on the display panel appearing greenish was solved, resulting in more accurate testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-18
- Publication Date
- 2026-03-17
AI Technical Summary
During testing, the display panel exhibited a greenish tint in the first or first few rows of pixels.
By designing processing and conversion modules in the display panel, the polarity reversal of the data signal is controlled, and the polarity of the first or last row of data signals is reversed in advance during the second time period. By utilizing the offset and recovery mechanism of the common voltage signal, the overall display of the first row or the first few rows of pixels is prevented from being too green.
This effectively avoids the first or first few rows of pixels from displaying an overall green tint, improving the accuracy and consistency of the display panel test.
Smart Images

Figure CN115171585B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to a display panel, a pixel pre-charging method, an electronic device, and a readable medium. Background Technology
[0002] Display technology has always been one of the important research directions in electronic devices. As the part that enables the display function of electronic devices, the display panel is usually tested before leaving the factory to evaluate its quality.
[0003] Taking a flip pixel architecture display panel as an example, when performing pixel on / off detection, since the display panel is usually driven by AC power, the polarity of the data signal in each frame is opposite, and the data signals transmitted by the red and blue pixels in each frame are of the same polarity, while the data signals transmitted by the green pixels are of opposite polarity. This causes the common voltage signal to shift towards the polarity of the data signals of the red and blue pixels, resulting in increased brightness when the green pixels are displayed, making the first row or the first few rows of pixels appear greenish overall. Summary of the Invention
[0004] This application discloses a display panel that can solve the technical problem that the first row or the first few rows of pixels appear greenish when the display panel is being tested.
[0005] In a first aspect, this application provides a display panel, the display panel including an array of pixel units, a plurality of scan signal lines extending along a first direction, and a plurality of data signal lines extending along a second direction. Each pixel unit includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel electrically connected to the same scan signal line. In the second direction, adjacent first color sub-pixels, adjacent second color sub-pixels, and adjacent third color sub-pixels are respectively electrically connected to different data signal lines. Under the control of the scan signal transmitted by the scan signal line, the data signal transmitted by the data signal line charges the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel, and adjacent data sub-pixels... The data signals transmitted by the signal lines have opposite polarities. The charging process of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel includes a first time period and a second time period. The display panel also includes a processing module and a conversion module. The processing module acquires display data and generates the scanning signal, the data signal, and the common voltage signal provided by the power supply based on the display data to control the pixel unit to charge in the first time period. The processing module also acquires the first row data signal to charge the first row of pixel units. The conversion module generates a conversion signal in the second time period. The processing module reverses the polarity of the first row data signal based on the conversion signal and controls the multiple data signal lines to transmit the corresponding first row data signal.
[0006] In the second time period, the polarity of the first row of data signals is reversed, and the multiple data signal lines are controlled to transmit the corresponding first row of data signals. As a result, before the first time period when the next frame of the image is displayed, the common voltage signal is shifted in advance and restored under the action of the power supply and other front-end driving circuits, thereby avoiding the overall display of the first row or the first few rows of pixel units being greenish.
[0007] Optionally, the display panel further includes a temporary storage module, which acquires the display data and sends the display data to the processing module after a preset delay.
[0008] Optionally, the display panel further includes a temporary storage module. The processing module sends the data signal to the temporary storage module. The processing module charges the first row of pixel units according to the first row of data signals. After a preset delay, the processing module controls the temporary storage module to charge the corresponding row of pixel units according to the temporarily stored remaining row of data signals.
[0009] Secondly, this application also provides a display panel, the display panel including an array of pixel units, a plurality of scan signal lines extending along a first direction, and a plurality of data signal lines extending along a second direction. Each pixel unit includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel electrically connected to the same scan signal line. In the second direction, adjacent first color sub-pixels, adjacent second color sub-pixels, and adjacent third color sub-pixels are respectively electrically connected to different data signal lines. The polarities of the data signals transmitted by adjacent data signal lines are opposite. The charging process of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel by the data signal includes a first time period and a second time period. The display panel also includes a processing module and a conversion module. The processing module acquires display data and generates the scan signal, the data signal, and a common voltage signal provided by the power supply according to the display data to control the pixel units to be charged in the first time period. The processing module also acquires a trailing data signal to charge the trailing pixel units. The conversion module generates a conversion signal. The processing module reverses the trailing data signal according to the conversion signal and controls the plurality of data signal lines to transmit the corresponding trailing data signal.
[0010] Thirdly, this application also provides a pixel pre-charging method, the pixel pre-charging method comprising:
[0011] Acquire multiple scan signals, multiple data signals, and a common voltage signal;
[0012] Based on the plurality of scanning signals, the plurality of data signals, and the common voltage signal, all pixel units distributed in the array are charged in the first time period;
[0013] Obtain the first row of data signals;
[0014] The polarity of the first row of data signals is reversed in the second time period;
[0015] The first line of data signal is transmitted to the corresponding data signal line.
[0016] Optionally, the step of acquiring multiple scan signals, multiple data signals, and a common voltage signal specifically includes:
[0017] Obtain the displayed data;
[0018] After a preset delay, the displayed data is processed to obtain the multiple scan signals and multiple data signals.
[0019] Optionally, the step of charging all pixel units distributed in the array in the first time period according to the plurality of scan signals, the plurality of data signals and the common voltage signal specifically includes:
[0020] Temporarily store the aforementioned multiple data signals;
[0021] Charge the first row pixel unit according to the first row data signal;
[0022] After a preset delay, the corresponding row of pixel units is charged based on the data signals from the remaining rows.
[0023] Fourthly, this application also provides a pixel pre-charging method, the pixel pre-charging method comprising:
[0024] Acquire multiple scan signals, multiple data signals, and a common voltage signal;
[0025] Based on the plurality of scanning signals, the plurality of data signals, and the common voltage signal, all pixel units distributed in the array are charged in the first time period;
[0026] Acquire tail data signals;
[0027] Reverse the polarity of the tailgating data signal;
[0028] The tail data signal is transmitted to the corresponding data signal line.
[0029] Fifthly, this application also provides an electronic device, the electronic device including a housing and a display panel as described in the first or second aspect, the housing being used to support and mount the display panel.
[0030] In a sixth aspect, this application also provides a readable medium storing a computer-readable program that, when read and executed by a processor, performs the pixel pre-charging method as described in the fourth or fifth aspect. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0032] Figure 1 This is a top view schematic diagram of a display panel provided in one embodiment of this application.
[0033] Figure 2 This is a schematic diagram of a display panel frame provided in one embodiment of this application.
[0034] Figure 3 A schematic diagram of a display panel frame provided for another embodiment of this application.
[0035] Figure 4 A schematic diagram of a display panel frame provided for another embodiment of this application.
[0036] Figure 5 This is a schematic flowchart of a pixel pre-charging method provided in one embodiment of this application.
[0037] Figure 6 This is a schematic diagram of a pixel pre-charging method provided in another embodiment of this application.
[0038] Figure 7 This is a top view schematic diagram of an electronic device provided according to one embodiment of this application.
[0039] Explanation of reference numerals: First direction - D1, Second direction - D2, Display panel - 1, Pixel unit - 11, First color sub-pixel - 111, Second color sub-pixel - 112, Third color sub-pixel - 113, Scan signal line - 12, Data signal line - 13, Processing module - 14, Conversion module - 15, Temporary storage module - 16, Power supply - 2, Electronic device - 3, Housing - 31. Detailed Implementation
[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0041] This application provides a display panel 1, please refer to it as well. Figure 1 and Figure 2 , Figure 1 This is a top view schematic diagram of a display panel provided in one embodiment of this application; Figure 2This is a schematic diagram of a display panel frame provided in one embodiment of this application. The display panel 1 includes an array of pixel units 11, multiple scan signal lines 12 extending along a first direction D1, and multiple data signal lines 13 extending along a second direction D2. Each pixel unit 11 includes a first color sub-pixel 111, a second color sub-pixel 112, and a third color sub-pixel 113 electrically connected to the same scan signal line 12. In the second direction D2, adjacent first color sub-pixels 111, adjacent second color sub-pixels 112, and adjacent third color sub-pixels 113 are electrically connected to different data signal lines 13. Under the control of the scan signal transmitted by the scan signal line 12, the data signal transmitted by the data signal line 13 charges the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113, and adjacent data signal lines 111 and 112 are connected to each other. The data signals transmitted in the 3rd phase have opposite polarities. The charging process of the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 by the data signals all includes a first time period and a second time period. The display panel 1 also includes a processing module 14 and a conversion module 15. The processing module 14 acquires display data and generates the scanning signal, the data signal, and the common voltage signal provided by the power supply 2 according to the display data to control the pixel unit 11 to be charged in the first time period. The processing module 14 also acquires the first row data signal to charge the first row pixel unit 11. The conversion module 15 generates a conversion signal in the second time period. The processing module 14 reverses the polarity of the first row data signal according to the conversion signal and controls the multiple data signal lines 13 to transmit the corresponding first row data signal.
[0042] It should be noted that the pixel unit 11 typically includes three color sub-pixels, namely the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113, which are used to display red, green, and blue respectively, to realize the display function of the display panel 1. Figure 1 As shown, the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 of each pixel unit 11 are arranged sequentially. Figure 1 The color subpixels representing the same type of shadow pattern have the same color. It is understood that in other possible implementations, the first color subpixel 111, the second color subpixel 112, and the third color subpixel 113 may also be used to display other colors, and this application does not limit this.
[0043] In this embodiment, the display panel 1 employs a liquid crystal controlled display method. The first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 each serve as one electrode of a liquid crystal capacitor, and the other electrode of the liquid crystal capacitor is used to receive the common voltage signal. When the data signal is transmitted to the first color sub-pixel 111, the second color sub-pixel 112, or the third color sub-pixel 113, the data signal is used to charge the first color sub-pixel 111, the second color sub-pixel 112, or the third color sub-pixel 113. This changes the voltage difference across the liquid crystal capacitor, allowing the liquid crystal capacitor to adjust the light transmittance and thus display the image.
[0044] Specifically, the processing module 14 can be a timing controller (TCON) in the display panel 1. The processing module 14 acquires the display data, processes it to obtain the scan signal and the data signal, and selects the pixel units 11 row by row through the scan signal. Then, it charges each row of pixel units 11 according to the corresponding data signal. The data signal obtained by the processing module 14 has polarity, i.e., opposite positive and negative polarities, respectively determined by… Figure 1 The "+" and "-" symbols represent the polarity of the data signal, and the processing module 14 changes the polarity of the data signal according to the conversion signal generated by the conversion module 15.
[0045] It should be noted that, normally, the power supply 2 that powers the display panel 1 is an AC power supply 2. In the current frame of the displayed image and the next frame of the displayed image, the polarity of the data signal transmitted on the same data signal line 13 is opposite. For example, as... Figure 1 As shown, in the current frame of the displayed image, the polarity of the data signal transmitted by the first column of data signal lines 13 along the second direction D2 is "-", and in the next frame of the displayed image, the polarity of the data signal transmitted by the first column of data signal lines 13 is "+". In this way, in the prior art, since the data signals transmitted by the red and blue pixels in each frame have the same polarity, while the data signals transmitted by the green pixels have the opposite polarity, the common voltage signal shifts towards the polarity of the data signals of the red and blue pixels, resulting in increased brightness when the green pixels are displayed, causing the first row or the first few rows of pixels to appear greenish overall. For ease of explanation, the row numbers appearing in this application are calculated sequentially along the second direction, and will not be repeated hereafter.
[0046] In this embodiment, the charging process of the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 includes the first time period and the second time period. In other words, the time period for each frame of image display includes the first time period and the second time period. The processing module 14 controls the charging of all pixel units 11 during the first time period, while during the second time period, according to the conversion signal, the polarity of the first row data signal is reversed in advance and transmitted through the corresponding data signal line 13, so that the common voltage signal is shifted during the second time period of the current frame of image display and is promptly restored to the initial potential under the action of the power supply 2 and other pre-drive circuits. It can be understood that since the data signal transmitted by the corresponding data signal line 13 during the first time period of the next frame of image display has the same polarity as the first row data signal after the polarity reversal, the common voltage signal is less likely to shift, thereby avoiding the overall greenish display of the first row or the first few rows of pixel units 11.
[0047] Understandably, in this embodiment, the polarity of the first row of data signals is reversed during the second time period, and the multiple data signal lines 13 are controlled to transmit the corresponding first row of data signals. As a result, before the first time period when the next frame of the image is displayed, the common voltage signal is shifted in advance and is restored under the action of the power supply 2 and other front-end driving circuits, thereby avoiding the first row or the first few rows of pixel units 11 from being displayed as green.
[0048] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 3 , Figure 3 This is a schematic diagram of a display panel frame provided for another embodiment of this application. The display panel 1 further includes a temporary storage module 16, which acquires the display data and sends the display data to the processing module 14 after a preset delay.
[0049] It should be noted that after the processing module 14 acquires the display data, the process of processing the display data to obtain the scanning signal and the data signal takes a certain amount of time. Under normal circumstances, the time for the processing module 14 to process the display data is equivalent to the time for charging the 3 or 4 rows of pixel units 11.
[0050] In this embodiment, the temporary storage module 16 acquires the display data to temporarily store the display data, and after a preset delay, sends the display data to the processing module 14. The processing module 14 then processes the display data, ultimately extending the processing time of the processing module 14, which is equivalent to the charging time for 10 or more rows of pixel units 11. This extends the recovery time of the common voltage signal and reduces the risk that the common voltage signal will not be recovered before the first time period of the next frame of the displayed image.
[0051] It is understood that in other possible implementations, the preset time may be changed as needed, thereby extending the time for the processing module 14 to process the display data. This application does not impose any restrictions on this.
[0052] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 4 , Figure 4 This is a schematic diagram of a display panel frame provided in another embodiment of this application. The display panel 1 further includes a temporary storage module 16. The processing module 14 sends the data signal to the temporary storage module 16. The processing module 14 charges the first row pixel unit 11 according to the first row data signal. After a preset delay, the processing module 14 controls the temporary storage module 16 to charge the corresponding row pixel unit 11 according to the temporarily stored remaining row data signals.
[0053] Specifically, after acquiring the display data, the processing module 14 processes the display data to obtain the data signal, and sends all the data signals sequentially to the temporary storage module 16 for temporary storage. The processing module 14 first charges the pixel unit 11 of the first row according to the first row data signal in the temporary storage module 16, and after a preset delay, the processing module 14 generates the corresponding scan signal to select the corresponding row pixel unit 11. The temporary storage module 16 outputs the temporarily stored remaining row data signals to the corresponding data signal line 13 to realize the charging of the corresponding row pixel unit 11.
[0054] For example, the processing module 14 first charges the pixel units 11 of the first row according to the first row data signal in the temporary storage module 16. After the temporary storage module 16 receives the second row data signal in sequence, the processing module 14 still selects the first row pixel units 11 according to the scan signal and controls the temporary storage module 16 to output the first row data signal. Similarly, after the temporary storage module 16 receives the third row data signal in sequence, the processing module 14 still selects the first row pixel units 11 according to the scan signal and controls the temporary storage module 16 to output the first row data signal. After the temporary storage module 16 receives the fourth row data signal in sequence, the processing module 14 selects the second row pixel units 11 according to the scan signal and controls the temporary storage module 16 to output the second row data signal. This process is repeated to complete the charging of all the pixel units 11, thus delaying the charging of the remaining pixel units 11 except for the first row pixel units 11. This extends the recovery time of the common voltage signal and reduces the risk that the common voltage signal will not be recovered before the first time period of the next frame of the image.
[0055] It is understood that in other possible implementations, the processing module 14 has a temporary storage function, which can acquire the display data and temporarily store it. As long as it does not affect the processing module 14's charging of the pixel unit 11 according to the data signal delay, this application does not impose any restrictions on this.
[0056] This application also provides a display panel 1, please refer to it again. Figure 1 and Figure 2The display panel 1 includes an array of pixel units 11, multiple scan signal lines 12 extending along a first direction D1, and multiple data signal lines 13 extending along a second direction D2. Each pixel unit 11 includes a first color sub-pixel 111, a second color sub-pixel 112, and a third color sub-pixel 113 electrically connected to the same scan signal line 12. In the second direction D2, adjacent first color sub-pixels 111, adjacent second color sub-pixels 112, and adjacent third color sub-pixels 113 are electrically connected to different data signal lines 13. Under the control of the scan signal transmitted by the scan signal line 12, the data signal transmitted by the data signal line 13 charges the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113. The data signals transmitted by adjacent data signal lines 13 have opposite polarities. The charging process of the first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 includes a first time period and a second time period. The display panel 1 also includes a processing module 14 and a conversion module 15. The processing module 14 acquires display data and generates the scanning signal, the data signal, and the common voltage signal provided by the power supply 2 according to the display data to control the pixel unit 11 to charge in the first time period. The processing module 14 also acquires the trailing data signal for charging the trailing pixel unit 11. The conversion module 15 generates a conversion signal. The processing module 14 reverses the trailing data signal according to the conversion signal and controls the multiple data signal lines 13 to transmit the corresponding trailing data signal.
[0057] Specifically, the difference between this embodiment and the previous embodiment is that the processing module 14 acquires the trailing data signal instead of the first-row data signal, and after acquiring the trailing data signal, it directly reverses the polarity of the trailing data signal. It should be noted that in this embodiment, since the display panel 1 is typically used to display a full-screen, static image during the Pixel On / Off test, the first-row data signal and the trailing data signal of the display panel 1 are the same. Simultaneously, after the processing module 14 acquires the trailing data signal and charges the trailing pixel unit 11, the conversion module 15 generates the conversion signal in advance to reverse the polarity of the trailing data signal. The processing module 14 then transmits the polarity-reversed trailing data signal to the corresponding multiple data signal lines 13 to achieve the pre-offset and recovery of the common voltage signal.
[0058] This application also provides a pixel pre-charging method, please refer to it as well. Figure 5 , Figure 5This is a schematic flowchart of a pixel pre-charging method according to an embodiment of this application. The pixel pre-charging method includes steps S501, S502, S503, S504, and S505. Detailed descriptions of steps S501, S502, S503, S504, and S505 are as follows.
[0059] S501 acquires multiple scan signals, multiple data signals, and a common voltage signal;
[0060] S502, charging all pixel units distributed in the array in the first time period according to the plurality of scanning signals, the plurality of data signals and the common voltage signal;
[0061] S503, acquire the first line of data signal;
[0062] S504, invert the polarity of the first row of data signals in the second time period;
[0063] S505, the first line of data signal is transmitted to the corresponding data signal line.
[0064] Specifically, the scanning signal, the data signal, the common voltage signal, the first time period, the pixel unit 11, the first row data signal, the second time period, and the data signal line 13 are described above and will not be repeated here.
[0065] Understandably, in this embodiment, the polarity of the first row of data signals is reversed during the second time period, and the multiple data signal lines 13 are controlled to transmit the corresponding first row of data signals. As a result, before the first time period when the next frame of the image is displayed, the common voltage signal is shifted in advance and is restored under the action of the power supply 2 and other front-end driving circuits, thereby avoiding the first row or the first few rows of pixel units 11 from being displayed as green.
[0066] In one possible implementation, the step of acquiring multiple scan signals, multiple data signals, and a common voltage signal specifically includes:
[0067] The displayed data is acquired and temporarily stored.
[0068] After a preset delay, the displayed data is processed to obtain the multiple scan signals and multiple data signals.
[0069] Understandably, in this embodiment, the display data is acquired and temporarily stored, and after a preset delay, the display data is processed to ultimately extend the processing time of the display data, thereby extending the recovery time of the common voltage signal and reducing the risk that the common voltage signal will not be recovered before the first time period of the next frame of the displayed image.
[0070] In one possible implementation, the step of charging all pixel units 11 distributed in the array according to the plurality of scan signals, the plurality of data signals, and the common voltage signal in the first time period specifically includes:
[0071] Temporarily store the aforementioned multiple data signals;
[0072] The first row pixel unit 11 is charged according to the first row data signal;
[0073] After a preset delay, the corresponding row pixel unit 11 is charged according to the data signals of the remaining rows.
[0074] Understandably, in this embodiment, a delay is achieved in charging the remaining rows of pixel units 11 except for the first row of pixel units 11, thereby extending the recovery time of the common voltage signal and reducing the risk that the common voltage signal will not be recovered before the first time period of the next frame of the image.
[0075] This application also provides a pixel pre-charging method, please refer to it as well. Figure 6 , Figure 6 This is a schematic flowchart of a pixel pre-charging method according to another embodiment of this application. The pixel pre-charging method includes steps S601, S602, S603, S604, and S605. Detailed descriptions of steps S601, S602, S603, S604, and S605 are as follows.
[0076] S601 acquires multiple scan signals, multiple data signals, and a common voltage signal;
[0077] S602, charging all pixel units distributed in the array in the first time period according to the plurality of scanning signals, the plurality of data signals and the common voltage signal;
[0078] S603, acquire tail data signal;
[0079] S604, reverse the polarity of the tail data signal;
[0080] S605, the tail data signal is transmitted to the corresponding data signal line.
[0081] Specifically, the tailing data signal is described above and will not be repeated here. It is understood that in this embodiment, the polarity of the tailing data signal is reversed in advance, and then the polarity-reversed tailing data signal is transmitted to the corresponding multiple data signal lines 13, thereby achieving the pre-offset and recovery of the common voltage signal.
[0082] This application also provides an electronic device 3, which can be seen in conjunction with the application. Figure 7 , Figure 7 This is a top view schematic diagram of an electronic device provided according to an embodiment of this application. The electronic device 3 includes a housing 31 and a display panel 1 as described above, wherein the housing 31 is used to support and mount the display panel 1. Specifically, the display panel 1 is described above and will not be repeated here.
[0083] It should be noted that the electronic device 3 in the embodiments of this application can be an electronic device 3 in a mobile phone, smartphone, tablet computer, e-reader, wearable portable device, laptop computer, etc., which can communicate with a data transfer server through the Internet. The data transfer server can be an instant messaging server, SNS (Social Networking Services) server, etc., and the embodiments of this application do not limit it.
[0084] This application also provides a readable medium storing a computer-readable program. When the computer-readable program is read and executed by a processor, the pixel pre-charging method described above is performed. Specifically, the pixel pre-charging method is described above and will not be repeated here.
[0085] It should be noted that those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a readable medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.
[0086] This document uses specific examples to illustrate the principles and implementation methods of this application. The above description of the implementation methods is only for the purpose of helping to understand the core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A display panel, the display panel comprising an array of pixel units, a plurality of scan signal lines extending along a first direction, and a plurality of data signal lines extending along a second direction, each pixel unit comprising a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel electrically connected to the same scan signal line, wherein adjacent first color sub-pixels, adjacent second color sub-pixels, and adjacent third color sub-pixels are respectively electrically connected to different data signal lines in the second direction, the data signals transmitted by adjacent data signal lines have opposite polarities, and the charging process of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel by the data signal each includes a first time period and a second time period, characterized in that, The period of each frame of display image includes the first period and the second period, the display panel further includes a processing module and a conversion module, the processing module acquires display data, and generates the scanning signal, the data signal and a common voltage signal provided by a power supply according to the display data, so as to control all the pixel units to charge in the first period, and the processing module acquires a first row data signal for charging a first row of pixel units, the conversion module generates a conversion signal in the second period, the processing module reverses the polarity of the first row data signal in advance according to the conversion signal, and controls the plurality of data signal lines to transmit the corresponding first row data signal, so that the common voltage signal is offset in the second period of the current frame of display image, and the polarity of the data signal transmitted by the corresponding data signal line is the same as that of the first row data signal after the polarity is reversed in the first period of the next frame of display image.
2. The display panel of claim 1, wherein, The display panel further includes a temporary storage module, the temporary storage module acquires the display data, and sends the display data to the processing module after delaying for a preset time.
3. The display panel of claim 1, wherein, The display panel further includes a temporary storage module, the processing module sends the data signal to the temporary storage module, the processing module charges a first row of pixel units according to the first row data signal, and controls the temporary storage module to charge corresponding rows of pixel units according to the temporarily stored remaining row data signals after delaying for a preset time.
4. A display panel comprising pixel units arranged in an array, a plurality of scan signal lines extending in a first direction, and a plurality of data signal lines extending in a second direction, each of the pixel units comprising a first color sub-pixel, a second color sub-pixel and a third color sub-pixel electrically connected to a same one of the scan signal lines, in the second direction, adjacent ones of the first color sub-pixels, adjacent ones of the second color sub-pixels and adjacent ones of the third color sub-pixels are electrically connected to different ones of the data signal lines, under control of a scan signal transmitted by the scan signal line, data signals transmitted by the data signal lines charge the first color sub-pixel, the second color sub-pixel and the third color sub-pixel, and polarities of the data signals transmitted by adjacent ones of the data signal lines are opposite, the process of charging the first color sub-pixel, the second color sub-pixel and the third color sub-pixel comprises a first period and a second period, characterized in that, The period of each frame of display image includes the first period and the second period, the display panel further includes a processing module and a conversion module, the processing module acquires display data, and generates the scanning signal, the data signal and a common voltage signal provided by a power supply according to the display data, so as to control the pixel units to charge in the first period, and the processing module acquires a last row data signal for charging a last row of pixel units, the conversion module generates a conversion signal, the processing module reverses the polarity of the last row data signal according to the conversion signal, and transmits the last row data signal after the polarity is reversed to the corresponding plurality of data signal lines, and controls the plurality of data signal lines to transmit the corresponding last row data signal, so as to realize the pre-offset and recovery of the common voltage signal.
5. A pixel pre-charge method, characterized by, A pixel pre-charging method for the display panel as claimed in claim 1, the pixel pre-charging method comprises: acquiring a plurality of scanning signals, a plurality of data signals and a common voltage signal; charging all the pixel units arranged in an array according to the plurality of scanning signals, the plurality of data signals and the common voltage signal in a first period; acquiring a first row data signal; reversing the polarity of the first row data signal in a second period; transmitting the first row data signal to a corresponding data signal line.
6. The pixel pre-charge method of claim 5, wherein, The step of acquiring the plurality of scanning signals, the plurality of data signals and the common voltage signal specifically comprises: temporarily storing the display data; delaying for a preset time, and processing the display data to obtain the plurality of scanning signals, the plurality of data signals.
7. The pixel pre-charge method of claim 5, wherein, The step of charging all pixel units distributed in the array according to the plurality of scanning signals, the plurality of data signals and the common voltage signal in the first time period specifically comprises: temporarily storing the plurality of data signals; charging the first row of pixel units according to the first row of data signals; delaying for a preset time, and charging the corresponding row of pixel units according to the remaining row of data signals.
8. A pixel pre-charge method, characterized by, The pixel pre-charging method for the display panel as claimed in claim 4 comprises: obtaining a plurality of scanning signals, a plurality of data signals and a common voltage signal; charging all pixel units distributed in the array according to the plurality of scanning signals, the plurality of data signals and the common voltage signal in the first time period; obtaining a tail row of data signals; inverting the polarity of the tail row of data signals; transmitting the tail row of data signals to the corresponding data signal lines.
9. An electronic device, comprising: The electronic device comprises a housing and the display panel as claimed in any one of claims 1-4, and the housing is used to carry and install the display panel.
10. A readable medium, characterized by The readable medium stores a computer readable program, when the computer readable program is read and executed by a processor, the pixel pre-charging method as claimed in any one of claims 5-8 is executed.
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Liquid crystal display (LCD) and method of driving the same
US20140354625A1