Display driving method, display substrate and display device

Abstract

The present disclosure provides a display driving method, a display substrate and a display device. The display driving method is applied to a display device. A display substrate of the display device includes a substrate, a plurality of scan lines and a plurality of data lines arranged on the substrate. The display substrate further includes a data chip. Output ends of data output channels of the data chip are connected with the data lines. The data output channels correspond to the data lines one by one. The method includes the following steps: receiving an image display instruction; providing a scan signal through the scan lines and simultaneously providing a data signal to the data lines through the data chip, wherein each data channel of the data chip provides a data signal for one of the data lines.

Description

Technical Field

[0001] This disclosure relates to the field of thin-film communication technology, and more particularly to a display driving method, a display substrate, and a display device. Background Technology

[0002] Field-sequence liquid crystal display (LCD) devices provide color through backlighting. Since they do not require color filters, they have higher transmittance than conventional LCDs that have color filters, and also have advantages such as low power consumption. Summary of the Invention

[0003] This disclosure provides a liquid crystal antenna control method, apparatus, liquid crystal antenna system, electronic device, and readable storage medium.

[0004] In a first aspect, embodiments of this disclosure provide a display driving method applied to a display device. The display substrate of the display device includes a substrate, a plurality of scan lines and a plurality of data lines disposed on the substrate. The display substrate also includes a data chip. The output terminal of the data output channel of the data chip is connected to the data lines, and the data output channel corresponds one-to-one with the data lines.

[0005] The method includes the following steps:

[0006] Receive image display instructions;

[0007] Scan signals are provided through the scan lines, and data signals are simultaneously provided to the data lines through the data chip, wherein each data channel of the data chip provides a data signal to one of the data lines.

[0008] In some embodiments, the scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line.

[0009] Providing a scanning signal through the scan line includes:

[0010] Provide scan signals with the same timing to the same set of scan lines.

[0011] In some embodiments, the number of scan lines is M, where M is a positive even number;

[0012] The provision of scan signals through the scan lines and the provision of data signals to the data lines through the data chip include:

[0013] The scanning signals with the same timing are provided by the m-th and m+1-th scanning lines, and the data signals are simultaneously provided to the m-th and m+1-th row sub-pixels by the data chip, where m is a positive integer less than or equal to M-1 and m is an odd number.

[0014] In some embodiments, the scan signal is generated based on a clock signal, and the number of clock signals is greater than 2.

[0015] In some embodiments, the number of clock signals is 4, 8, or 16.

[0016] Secondly, embodiments of this disclosure provide a display substrate, including a substrate and a sub-pixel driving circuit disposed on the substrate. The substrate is provided with a plurality of scan lines and a plurality of data lines. The scan lines and the data lines are connected to the corresponding sub-pixel driving circuits. The display substrate further includes a data chip, which includes a data output channel. The data output channel is connected to the data lines, and the data output channel corresponds one-to-one with the data lines.

[0017] In some embodiments, the scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line. The scan lines in the same group are connected to a scan signal terminal that provides a scan signal with the same timing sequence.

[0018] In some embodiments, the number of scan lines is M, where M is a positive even number. The m-th scan line and the (m+1)-th scan line are connected to the scan signal terminal that provides a scan signal with the same timing sequence. m is a positive integer less than or equal to M-1, and m is an odd number.

[0019] Thirdly, embodiments of this disclosure provide a display device including the display substrate described in any of the above claims.

[0020] In some embodiments, the display device is a field-sequence liquid crystal display device, and / or the display device is a near-eye display device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the display substrate provided in the embodiments of this disclosure;

[0023] Figure 2 This is a schematic flowchart of the display driving method provided in an embodiment of this disclosure;

[0024] Figure 3 This is a driving timing diagram of a display device provided in an embodiment of this disclosure;

[0025] Figure 4 This is yet another driving timing diagram of the display device provided in the embodiments of this disclosure. Detailed Implementation

[0026] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0027] The terms "first," "second," etc., used in the embodiments of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices. Additionally, the use of "and / or" in this application indicates at least one of the connected objects, such as A and / or B and / or C, representing seven possibilities: including A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and A, B, and C present.

[0028] This disclosure provides a display substrate.

[0029] like Figure 1 As shown, in one embodiment, the display substrate includes a substrate and a sub-pixel driving circuit 110 disposed on the substrate. The substrate is provided with a plurality of scan lines G(1) to G(M) and a plurality of data lines S(1) to S(N). The scan lines and data lines are connected to the corresponding sub-pixel driving circuit 110.

[0030] The display substrate also includes a data chip 120. In an exemplary embodiment, the data chip 120 may specifically be a display driver IC (DDIC). The data chip 120 includes a source driver, which has multiple data output channels connected to data lines. Each data output channel is used to provide data signals to the data lines.

[0031] During operation, the switching transistors in each sub-pixel driving circuit 110 are turned on line by line under the control of the scanning signal of the scan line, and each data output channel of the data chip 120 is opened to write pixel data to each sub-pixel driving circuit 110.

[0032] It is important to understand that in the relevant technology, the data chip 120 is connected to the data lines via a MUX (Multiplexer), meaning that each data output channel corresponds to multiple data lines.

[0033] Taking a 1:2 MUX scheme from related technologies as an example, each data output channel is connected to two data lines via a MUX switch. During operation, the MUX switch is first controlled to connect the data output channel to one of the data lines for data writing. After data writing is complete, the MUX switch is then used to connect the data output channel to the other data line. This completes the data writing for that data channel. If the data writing time for each data line is t, then the data writing time for each row of sub-pixels is 2t.

[0034] In this embodiment, the data output channels correspond one-to-one with the data lines. During implementation, data signals can be simultaneously provided to each data line through each data output channel. If the data writing time for each data line is t, then the required data writing time is t. Thus, in this embodiment, the single-line data writing time is reduced to half that of the traditional 1:2 MUX scheme, and the single-line data writing time is reduced to one-third that of the traditional 1:3 MUX scheme. Obviously, given a fixed sub-pixel charging time, the refresh rate can be increased to twice that of the traditional 1:2 MUX scheme, and three times that of the traditional 1:3 MUX scheme.

[0035] In some embodiments, the scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line. The same group of scan lines is connected to a scan signal terminal that provides a scan signal with the same timing.

[0036] In an exemplary embodiment, the number of scan lines is M, where M is a positive even number. The m-th scan line and the (m+1)-th scan line are connected to the scan signal terminal that provides scan signals with the same timing sequence. m is a positive integer less than or equal to M-1, and m is an odd number. This can be understood as follows: in this embodiment, every two scan lines on the display substrate are divided into a group, so that the two scan lines in each group can acquire scan signals with the same timing sequence.

[0037] Each group of scan lines corresponds to the same scan signal. Since the scan signal is generated based on the clock signal, in practice, two clock signals with the same timing can be provided to the same group of scan lines, or the same clock signal can be provided to the same group of scan lines. In this way, the sub-pixel driving circuit 110 corresponding to the two scan lines of each group is turned on at the same time. Therefore, the sub-pixels displayed by the two rows of sub-pixels corresponding to the same group of scan lines are also the same.

[0038] Thus, in the technical solution of this embodiment, with a fixed scanning time for each scan, the overall scanning speed can be improved by reducing the total scanning time.

[0039] During implementation, the number of scan lines in each group can be determined as needed. For example, at the top and bottom edges of the display panel, where the requirements for display effect are relatively low, multiple scan lines are provided with scan signals of the same timing to improve the scanning speed; while for the central area of ​​the display panel, each scan line corresponds to a scan signal of a different timing, which helps to improve its display effect.

[0040] For example, in one embodiment, 25% of the scan lines near the top and bottom edges of the display panel can be controlled to scan in a manner where multiple scan lines have the same scanning timing, while 50% of the scan lines located in the central area of ​​the display panel can be controlled to scan in a manner where each has a different scanning timing.

[0041] For example, it is also possible to control 25% of the scan lines near the top and bottom edges of the display panel to scan with different scan timing sequences, while controlling 50% of the scan lines in the central area of ​​the display panel to scan with multiple scan lines having the same scan timing sequence.

[0042] During implementation, the scanning method of different areas of the display panel can be adjusted as needed. In this embodiment, no further limitation is made on the area and range corresponding to different scanning methods.

[0043] This disclosure provides a display device including a display substrate as described above. In some embodiments, the display device may be a field-sequence display device, and in some embodiments, the display device may be a near-eye display device. Here, a near-eye display device specifically refers to, but is not limited to, near-eye display devices such as AR (Augmented Reality) and VR (Virtual Reality).

[0044] Since the technical solution of this embodiment includes all the technical solutions of the above-described display substrate embodiments, it can achieve at least all of the above-described technical effects, which will not be repeated here.

[0045] This disclosure also provides a display driving method.

[0046] In one embodiment, the display driving method is applied to any of the above-described display devices.

[0047] like Figure 2 As shown, in one embodiment, the display driving method includes the following steps:

[0048] Step 201: Receive image display command;

[0049] Step 202: Provide a scan signal through the scan line and simultaneously provide a data signal to the data line through the data chip 120, wherein each data channel of the data chip 120 provides a data signal to one of the data lines.

[0050] In the technical solution of this embodiment, the data output channels correspond one-to-one with the data lines. During implementation, data signals can be provided to each data line simultaneously through each data output channel.

[0051] If the data writing time for each data line is t, then the required data writing time is t. Thus, in this embodiment, the single-line data writing time is reduced to half that of the traditional 1:2 MUX scheme, and the single-line data writing time is reduced to one-third that of the traditional 1:3 MUX scheme. Clearly, given a fixed sub-pixel charging time, the refresh rate can be doubled compared to the traditional 1:2 MUX scheme, and tripled compared to the traditional 1:3 MUX scheme.

[0052] In some embodiments, the scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line.

[0053] Step 202 above includes:

[0054] Provide scan signals with the same timing to the same set of scan lines.

[0055] In this embodiment, each group of scan lines corresponds to the same scan signal. Since the scan signal is generated based on the clock signal, in practice, two clock signals with the same timing can be provided to the same group of scan lines, or the same clock signal can be provided to the same group of scan lines. In this way, the sub-pixel driving circuits 110 corresponding to the two scan lines of each group are turned on at the same time. Therefore, the sub-pixels displayed by the two rows of sub-pixels corresponding to the same group of scan lines are also the same.

[0056] Thus, in the technical solution of this embodiment, with a fixed scanning time for each scan, the overall scanning speed can be improved by reducing the total scanning time.

[0057] In some embodiments, the number of scan lines is M, where M is a positive even number;

[0058] The provision of scan signals through the scan lines and the provision of data signals to the data lines through the data chip 120 include:

[0059] The scanning signals with the same timing are provided by the m-th and m+1-th scanning lines, and the data signals are simultaneously provided to the m-th and m+1-th row sub-pixels by the data chip 120, where m is a positive integer less than or equal to M-1 and m is an odd number.

[0060] In this embodiment, each pair of scan lines on the display substrate is divided into a group, so that the two scan lines in each group correspond to the same scan signal. In practice, the two rows of sub-pixels corresponding to the same group of scan lines display the same image. Thus, with a fixed scan time per scan, the overall scan speed is improved by reducing the total scan time. Specifically, since the two rows of sub-pixels corresponding to the same group of scan lines are scanned simultaneously, the total scan time is effectively halved, significantly increasing the scan speed.

[0061] In some embodiments, the scan signal is generated based on clock signals, and the number of clock signals is greater than 2. In some embodiments, the number of clock signals is 4, 8, or 16 groups.

[0062] In the technical solution of this embodiment, multiple sets of clock signals can also be set to provide scanning signals. During implementation, the number of clock signals can be adaptively increased according to needs and the capabilities of the data chip 120. In this way, under the same scanning frequency, if the number of clock signals is increased, the frequency of a single clock signal can be reduced, which helps to reduce energy consumption.

[0063] like Figure 3 As shown, Figure 3 This is a timing diagram of the drive of a display device in one embodiment of the present disclosure. The dummy CLK period can be understood as the initialization period when the display device is first turned on. The dummy CLK period only exists before the display panel is first turned on and the first frame of image is displayed.

[0064] This embodiment provides a total of 16 clock signals from CLK1 to CLK16. With a fixed scanning frequency, the frequency of a single clock signal can be reduced, which helps to reduce power consumption.

[0065] The scan signals GATE1 and GATE2 are generated based on the clock signal, and the timing of the two scan signals is different.

[0066] In the figure, the Hsync signal is a synchronization signal. The first rising edge of the Hsync signal corresponds to the start time of the data writing period of the first row of sub-pixels in the first frame image. At this time, the first row of scan lines is opened in the control sub-pixel driving circuit 110, and each data channel (Source 1 to Source N, where N is an integer greater than 1) writes data to each sub-pixel driving circuit 110.

[0067] Each data channel shows two squares during each data writing period. Each square represents the data writing period corresponding to a sub-pixel in the 1:2 MUX scheme of the related technology. It can be seen that the scanning time for each row of sub-pixels is longer in this embodiment. In practice, the scanning time can be extended as needed to improve the data writing effect. Obviously, the scanning speed can also be increased when the scanning time is fixed, which is equivalent to increasing the refresh rate of the display device, which helps to improve the display effect.

[0068] like Figure 4 As shown, with Figure 3 Similar to the illustrated embodiment, the dummy CLK period is used as the initialization period. (And...) Figure 3 The difference in the illustrated embodiment is that, in this embodiment, the timing of clock signals CLK1 and CLK2 is the same, the timing of CLK3 and CLK4 is the same, and so on. During implementation, four scan signals, GATE1 to GATE4, are generated based on the clock signals. Scan signals GATE1 and GATE2 have the same timing, and scan signals GATE3 and GATE4 have the same timing. During implementation, the two rows of sub-pixels corresponding to the same set of scan lines have the same scan timing; therefore, the images displayed by these two rows of sub-pixels are identical.

[0069] The above description represents the preferred embodiments of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles described herein, and these improvements and modifications should also be considered within the scope of protection of this disclosure.

Claims

1. A display driving method applied to a display device, wherein the display substrate of the display device includes a substrate, a plurality of scan lines and a plurality of data lines disposed on the substrate, the display substrate further includes a data chip, the output terminal of the data output channel of the data chip is connected to the data lines, and the data output channel corresponds one-to-one with the data lines; The method includes the following steps: Receive image display instructions; Scan signals are provided through the scan lines, and data signals are simultaneously provided to the data lines through the data chip, wherein each data channel of the data chip provides a data signal to one of the data lines; The scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line. Providing a scanning signal through the scan line includes: Provide scan signals with the same timing to the same group of scan lines; The number of scan lines is M, where M is a positive even number; The provision of scan signals via the scan lines and the provision of data signals to the data lines via the data chip include: The scanning signals with the same timing are provided by the m-th and m+1-th scanning lines, and the data signals are simultaneously provided to the m-th and m+1-th row sub-pixels by the data chip, where m is a positive integer less than or equal to M-1 and m is an odd number.

2. The method as described in claim 1, wherein, The scan signal is generated based on a clock signal, and the number of clock signals is greater than 2.

3. The method as described in claim 2, wherein, The number of clock signals is 4, 8, or 16.

4. A display substrate, comprising a substrate and a sub-pixel driving circuit disposed on the substrate, wherein the substrate is provided with a plurality of scan lines and a plurality of data lines, the scan lines and the data lines being connected to corresponding sub-pixel driving circuits, the display substrate further comprising a data chip, the data chip comprising a data output channel, the data output channel being connected to the data lines, and the data output channel corresponding to each data line one by one; The scan lines are divided into multiple groups along the arrangement direction of the scan lines, and at least some groups have more than one scan line. The scan lines in the same group are connected to the scan signal terminal that provides a scan signal with the same timing sequence. The number of scan lines is M, where M is a positive even number. The m-th scan line and the (m+1)-th scan line are connected to the scan signal terminal that provides a scan signal with the same timing sequence. m is a positive integer less than or equal to M-1, and m is an odd number.

5. A display device comprising the display substrate of claim 4.

6. The display device as claimed in claim 5, wherein, The display device is a field-sequence liquid crystal display device, and / or the display device is a near-eye display device.

Images