A low-power-consumption gesture wake-up mode driving method and a liquid crystal display

Abstract

The application discloses a low-power-consumption gesture wake-up mode driving method and a liquid crystal display screen. The method comprises the following steps: in the n-th frame of the low-power-consumption gesture wake-up mode, a pixel transistor is closed by a first low level, and a data line and a common electrode line are driven by a preset pulse timing; in the n+1-th frame of the low-power-consumption gesture wake-up mode, the pixel transistor is driven by the preset pulse timing, and the data line and the common electrode line are driven by a second low level. The gate line, the data line and the common electrode line are alternately and pulse-timed driven in the low-power-consumption gesture wake-up mode, so that the pixel transistors are opened at intervals, and the accumulated charges in the pixel electrodes are released, thereby avoiding the phenomenon that the data in the data line is written into the pixel electrodes, the loads of various display areas are inconsistent at the end of the low-power-consumption gesture wake-up mode, and the gray scales are inconsistent, and the display quality of the liquid crystal display screen is improved.

Description

Technical Field

[0001] This invention relates to the field of display driving technology, and in particular to a driving method for a low-power gesture wake-up mode and a liquid crystal display screen. Background Technology

[0002] With the development of display technology, flat panel display devices such as liquid crystal displays (LCDs) have become the mainstream display devices due to their advantages such as high image quality, power saving, thin body and wide range of applications, and are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers.

[0003] A liquid crystal display panel includes multiple sub-pixels arranged in an array. Each sub-pixel is electrically connected to a thin-film transistor (TFT). The gate of the TFT is connected to a horizontal gate scan line, the drain is connected to a vertical data line, and the source is connected to the pixel electrode. Applying sufficient voltage to the gate scan line will turn on all the TFTs electrically connected to that gate scan line, allowing the signal voltage on the data line to be written into the pixel, controlling the transmittance of the liquid crystal, and achieving the display effect.

[0004] However, existing LCD screens accumulate charge in LPWG (Low Power Wakeup Gesture) mode, which causes inconsistent grayscale levels after exiting LWPG mode, thus reducing display quality. Summary of the Invention

[0005] Existing LCD screens accumulate charge in low-power gesture wake-up mode, causing inconsistent grayscale when exiting the mode, thus reducing display quality.

[0006] To address the aforementioned issues, a driving method and liquid crystal display (LCD) for a low-power gesture wake-up mode are proposed. By alternately driving the gate line, data line, and common motor line with pulse timing during the low-power gesture wake-up mode, the pixel transistors are turned on intermittently, releasing the accumulated charge in the pixel electrodes. This avoids the phenomenon of inconsistent loads in different display areas at the end of the low-power gesture wake-up mode due to data being written to the pixel electrodes from the data lines, thus improving the display quality of the LCD.

[0007] Firstly, a method for driving a low-power gesture wake-up mode includes:

[0008] Step 100: In the nth frame of the low-power gesture wake-up mode, the pixel transistor is turned off with the first low level, and the data line and common motor line are driven with the preset pulse timing.

[0009] Step 200: In the (n+1)th frame of the low-power gesture wake-up mode, drive the pixel transistor with the preset pulse timing, and drive the data line and common motor line with the second low level.

[0010] Step 300: Repeat steps 100-200 until the display screen is woken up;

[0011] Wherein, the first low level is the low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level is the low level of the preset pulse timing.

[0012] In conjunction with the low-power gesture wake-up mode driving method described in the first aspect of the present invention, in a first possible implementation, step 100 includes:

[0013] Step 110: Obtain the first low level;

[0014] Step 120: In the nth frame, input the first low level to the mth row gate line to turn off the pixel transistor connected to the mth row gate line.

[0015] In conjunction with the low-power gesture wake-up mode driving method described in the first aspect of the present invention, in a second possible implementation, step 100 further includes:

[0016] Step 130: Obtain the preset driving timing;

[0017] Step 140: In the nth frame, drive the i-th column data line and the i-th column common electrode line using the preset driving timing.

[0018] In conjunction with the low-power gesture wake-up mode driving method described in the first aspect of the present invention, in a third possible implementation, step 200 includes:

[0019] Step 210: Obtain the preset driving timing;

[0020] Step 220: Drive the m-th row of gate lines using the preset driving timing in the n+1th frame.

[0021] In conjunction with the low-power gesture wake-up mode driving method described in the first aspect of the present invention, in a fourth possible implementation, step 200 further includes:

[0022] Step 230: Obtain the second low level;

[0023] Step 240: In the (n+1)th frame, drive the i-th column data line and the i-th column common electrode line using the second low level.

[0024] Secondly, a liquid crystal display screen employs a low-power gesture wake-up mode driving method as described in the first aspect, comprising:

[0025] Driver module;

[0026] Timing module;

[0027] The timing module is used to output a preset pulse timing sequence;

[0028] The driver module is used for:

[0029] In the nth frame of the low-power gesture wake-up mode, the pixel transistor is turned off with a first low level, and the data line and common motor line are driven with the preset pulse timing.

[0030] In the (n+1)th frame of the low-power gesture wake-up mode, the pixel transistor is driven with the preset pulse timing and the data line and common motor line are driven with the second low level.

[0031] Wherein, the first low level is the low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level is the low level of the preset pulse timing.

[0032] In conjunction with the liquid crystal display screen described in the second aspect of the present invention, in a first possible embodiment, the driving module is further configured to input the first low level to the m-th row gate line in the n-th frame to turn off the pixel transistor connected to the n-th row gate line.

[0033] In conjunction with the liquid crystal display screen described in the second aspect of the present invention, in a second possible embodiment, the driving module is further configured to drive the i-th column data line and the i-th column common electrode line in the n-th frame using the preset driving timing.

[0034] In conjunction with the liquid crystal display screen described in the second aspect of the present invention, in a third possible embodiment, the driving module is further configured to drive the m-th row gate line in the n+1th frame using the preset driving timing.

[0035] In conjunction with the liquid crystal display screen described in the second aspect of the present invention, in a fourth possible embodiment, the driving module is further configured to drive the i-th column data line and the i-th column common electrode line using the second low level in the n+1th frame.

[0036] The driving method and liquid crystal display screen of the low-power gesture wake-up mode described in this invention drive the gate line, data line and common motor line with alternating pulse timing in the low-power gesture wake-up mode, so that the pixel transistors are turned on at intervals, releasing the accumulated charge in the pixel electrode. This avoids the phenomenon that the load of each display area is inconsistent at the end of the low-power gesture wake-up mode due to the writing of data from the data line to the pixel electrode, which leads to inconsistent gray levels. This improves the display quality of the liquid crystal display screen. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the driving circuit for a pixel transistor.

[0039] Figure 2 This is a schematic diagram of the driving timing of the driving method for the low-power gesture wake-up mode in this invention;

[0040] Figure 3 This is a schematic diagram of a specific embodiment of the driving method for the low-power gesture wake-up mode in this invention;

[0041] Figure 4 for Figure 3 A schematic diagram of a specific embodiment of step 100;

[0042] Figure 5 for Figure 3 A schematic diagram of another specific embodiment of step 100;

[0043] Figure 6 for Figure 3 A schematic diagram of a specific embodiment of step 200;

[0044] Figure 7 for Figure 3 A schematic diagram of another specific embodiment of step 200;

[0045] Figure 8 This is a schematic diagram of the structure of the liquid crystal display screen in this invention. Detailed Implementation

[0046] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are all within the scope of protection of this invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0049] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] Existing LCD screens accumulate charge in low-power gesture wake-up mode, causing inconsistent grayscale when exiting the mode, thus reducing display quality.

[0052] To address the above issues, a low-power gesture wake-up mode driving method and an LCD display are proposed.

[0053] Firstly, a driving method for a low-power gesture wake-up mode, such as... Figure 3 , Figure 3This is a schematic diagram of a specific embodiment of the driving method for the low-power gesture wake-up mode in this invention; including:

[0054] Step 100: In the nth frame of the low-power gesture wake-up mode, the pixel transistor is turned off with a first low level (VSN), and the data line (Data) and common motor line are driven with a preset pulse timing.

[0055] like Figure 1 , Figure 1 This is a schematic diagram of the driving circuit for a pixel transistor. Due to the variation of the gate signal, in LPWG mode, the gate outputs a VSN potential. Although this potential is a relatively low voltage, the pixel TFT transistor still has a certain leakage current. Data is written into the pixel electrode PITO (Cs). Over time, this will cause the pixel electrode PITO (Cs) to have incomplete or incomplete charge release. After exiting LPWG mode, due to the inconsistent loading at different positions of the display screen, there will be certain differences in brightness at different positions.

[0056] In this embodiment, the gate line, data line, and common electrode line (Vcom) are driven alternately. Specifically, in the nth frame, a first low level (VSN) is output to the gate line to turn off the pixel transistor, and simultaneously the data line and common electrode line (Vcom) are driven according to a preset pulse timing sequence. Figure 2 , Figure 2 This is a schematic diagram of the driving timing of the driving method for the low-power gesture wake-up mode in this invention.

[0057] In some alternative implementations, such as Figure 4 , Figure 4 for Figure 3 A schematic diagram of a specific embodiment of step 100; step 100 includes: step 110, obtaining a first low level (VSN); step 120, inputting the first low level (VSN) into the m-th row gate line in the n-th frame to turn off the pixel transistor connected to the m-th row gate line (Gate).

[0058] In some alternative implementations, such as Figure 5 , Figure 5 for Figure 3 Another specific embodiment of step 100 is shown in the schematic diagram; step 100 also includes: step 130, obtaining a preset driving timing sequence; step 140, driving the i-th column data line (Data) and the i-th column common electrode line (Vcom) using the preset driving timing sequence in the n-th frame.

[0059] In one application scenario of this embodiment, the pixel TFT is turned off by outputting a first low level (VSN) through the m-th row gate line in the n-th frame of the LPWG, while the i-th column data line and the i-th column common electrode line (Vcom) output pulse signals on the basis of the second low level (GND).

[0060] The first low level (VSN) is a low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level (GND) is a low level of the preset pulse timing.

[0061] Step 200: In the (n+1)th frame of the low-power gesture wake-up mode, drive the pixel transistor with a preset pulse timing, and drive the data line and common motor line with the second low level (GND);

[0062] In some alternative implementations, such as Figure 6 , Figure 6 for Figure 3 A schematic diagram of a specific embodiment of step 200; step 200 includes step 210, obtaining a preset driving timing sequence; step 220, driving the m-th row of gate lines using the preset driving timing sequence in the n+1th frame.

[0063] In some alternative implementations, such as Figure 7 , Figure 7 for Figure 3 A schematic diagram of another specific embodiment of step 200 is shown; step 200 also includes step 230, obtaining a second low level (GND); step 240, using the second low level (GND) to drive the i-th column data line (Data) and the i-th column common electrode line (Vcom) in the n+1 frame.

[0064] In the (n+1)th frame of the LPWG, a preset pulse timing sequence is output from the second low level (GND) upwards through the m-th row gate line, while the i-th column data line and the i-th column common electrode line (Vcom) maintain the second low level (GND) potential. At this time, the pixel electrode PITO (Cs) discharges through the activated pixel TFT, thus releasing the previously accumulated charge. This cycle avoids charge accumulation, thereby reducing the fluctuation of the pixel electrode PITO (Cs) potential and preventing grayscale inconsistencies, thereby improving the display effect and enhancing the product's competitiveness.

[0065] Step 300: Repeat steps 100-200 until the display screen is woken up; By driving the gate line, data line and common motor line with alternating pulse timing in the low-power gesture wake-up mode, the pixel transistors are turned on at intervals, releasing the accumulated charge in the pixel electrode. This avoids the phenomenon of inconsistent load in each display area at the end of the low-power gesture wake-up mode due to the data in the data line being written to the pixel electrode, resulting in inconsistent grayscale, thus improving the display quality of the LCD screen.

[0066] Secondly, a liquid crystal display screen 400, such as... Figure 8 , Figure 8 This is a schematic diagram of the structure of the liquid crystal display screen 400 in this invention. A driving method for a low-power gesture wake-up mode according to a first aspect includes a driving module 402 and a timing module 401. The timing module 401 is used to output a preset pulse timing sequence. The driving module 402 is used to: in the nth frame of the low-power gesture wake-up mode, turn off the pixel transistor with a first low level (VSN) and drive the data line (Data) and common motor line with the preset pulse timing sequence; in the (n+1)th frame of the low-power gesture wake-up mode, drive the pixel transistor with the preset pulse timing sequence and drive the data line (Data) and common motor line with a second low level (GND); wherein, the first low level (VSN) is the low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level (GND) is the low level of the preset pulse timing sequence.

[0067] Furthermore, the driving module 402 is also used to input a first low level (VSN) to the m-th row gate line in the n-th frame to turn off the pixel transistor connected to the n-th row gate line.

[0068] Furthermore, the driving module 402 is also used to drive the i-th column data line (Data) and the i-th column common electrode line (Vcom) in the n-th frame using a preset driving timing.

[0069] Furthermore, the driving module 402 is also used to drive the m-th row of gate lines in the n+1th frame using a preset driving timing.

[0070] Furthermore, the driving module 402 is also used to drive the i-th column data line (Data) and the i-th column common electrode line (Vcom) in the n+1th frame using the second low level (GND).

[0071] The driving method and liquid crystal display screen of the low-power gesture wake-up mode of the present invention drive the gate line, data line and common motor line with alternating pulse timing in the low-power gesture wake-up mode, so that the pixel transistors are turned on at intervals, and the accumulated charge in the pixel electrode is released. This avoids the phenomenon that the load of each display area is inconsistent at the end of the low-power gesture wake-up mode due to the writing of data in the data line to the pixel electrode, which leads to inconsistent gray levels. This improves the display quality of the liquid crystal display screen.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A driving method for a low-power gesture wake-up mode, characterized in that it includes: Step 100: In the nth frame of the low-power gesture wake-up mode, the pixel transistor is turned off with the first low level, and the data line and common motor line are driven with the preset pulse timing. Step 200: In the (n+1)th frame of the low-power gesture wake-up mode, drive the pixel transistor with the preset pulse timing, and drive the data line and common motor line with the second low level. Step 300: Repeat steps 100-200 until the display screen is woken up; Wherein, the first low level is the low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level is the low level of the preset pulse timing. Step 100 further includes: Step 130: Obtain the preset pulse timing sequence; Step 140: In the nth frame, drive the i-th column of data lines and the i-th column of common electrode lines using the preset pulse timing. Step 200 further includes: Step 230: Obtain the second low level; Step 240: In the (n+1)th frame, drive the i-th column data line and the i-th column common electrode line using the second low level.

2. The driving method for the low-power gesture wake-up mode according to claim 1, characterized in that, Step 100 includes: Step 110: Obtain the first low level; Step 120: In the nth frame, input the first low level to the mth row gate line to turn off the pixel transistor connected to the mth row gate line.

3. The driving method for the low-power gesture wake-up mode according to claim 1, characterized in that, Step 200 includes: Step 210: Obtain the preset pulse timing sequence; Step 220: Drive the m-th row of gate lines using the preset pulse timing in the n+1th frame.

4. A liquid crystal display screen, employing a driving method for a low-power gesture wake-up mode as described in any one of claims 1-3, characterized in that, include: Driver module; Timing module; The timing module is used to output a preset pulse timing sequence; The driver module is used for: In the nth frame of the low-power gesture wake-up mode, the pixel transistor is turned off with a first low level, and the data line and common motor line are driven with the preset pulse timing. In the (n+1)th frame of the low-power gesture wake-up mode, the pixel transistor is driven with the preset pulse timing and the data line and common motor line are driven with the second low level. Wherein, the first low level is the low level used to turn off the pixel transistor in the low-power gesture wake-up mode, and the second low level is the low level of the preset pulse timing.

5. The liquid crystal display screen according to claim 4, characterized in that, The driving module is also configured to input the first low level to the m-th row gate line in the n-th frame to turn off the pixel transistor connected to the n-th row gate line.

6. The liquid crystal display screen according to claim 4, characterized in that, The driving module is also used to drive the i-th column of data lines and the i-th column of common electrode lines in the n-th frame using the preset pulse timing.

7. The liquid crystal display screen according to claim 4, characterized in that, The driving module is also used to drive the m-th row of gate lines in the n+1th frame using the preset pulse timing.

8. The liquid crystal display screen according to claim 4, characterized in that, The driving module is also used to drive the i-th column data line and the i-th column common electrode line in the n+1th frame using the second low level.

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