An alternating display high aperture ratio pixel driving circuit

Abstract

The application discloses an alternating display high-aperture-ratio pixel driving circuit, comprising a first sub-driving circuit and a second sub-driving circuit, wherein the first sub-driving circuit and the second sub-driving circuit each comprise a first transistor, a pixel electrode, a storage capacitor and a liquid crystal element; the gate of the first transistor of the first sub-driving circuit is coupled with a first control signal line, and the liquid crystal element of the first sub-driving circuit is coupled with a first reference electrode at an end away from the pixel electrode; the gate of the first transistor of the second sub-driving circuit is coupled with a second control signal line, and the liquid crystal element of the first sub-driving circuit is coupled with a second reference electrode at an end away from the pixel electrode.

Description

Technical Field

[0001] This invention relates to the field of pixel driving technology, and more specifically to a high aperture ratio pixel driving circuit for alternating displays. Background Technology

[0002] In field sequential or color sequential display technologies, the backlight can only be turned on after all the liquid crystals in the screen have deflected to a stable state to avoid screen chaos. Therefore, how to speed up the liquid crystal driving time and increase the backlight turn-on time is an urgent problem to be solved in this field.

[0003] In traditional color-sequential display technology, the pixel driving circuit of an LCD first charges the electrodes of each row of pixels sequentially within a frame, then waits for all liquid crystals to deflect to a stable position, and finally turns on the backlight. If the backlight is turned on immediately after the last row of pixels has finished charging, the liquid crystals corresponding to the pixels charged later are not yet stable, which will cause differences in brightness and color, resulting in a chaotic image. Therefore, the time allotted for backlight activation within a frame in the pixel driving circuit is very short, making it difficult to achieve high brightness and high frequency display, while also placing higher demands on backlight brightness specifications and lifespan, thus increasing product costs.

[0004] In summary, traditional pixel driving circuits suffer from short backlight turn-on time. Summary of the Invention

[0005] In view of this, the present invention provides a high aperture ratio pixel driving circuit for alternating display, which solves the problem of short backlight on-time in traditional pixel driving circuits by improving the circuit structure and driving timing.

[0006] To solve the above problems, the technical solution of the present invention is to employ an alternating display high aperture ratio pixel driving circuit, comprising: a first sub-driving circuit and a second sub-driving circuit. Both the first and second sub-driving circuits include a first transistor, a pixel electrode, a storage capacitor, and a liquid crystal element. The gate of the first transistor in the first sub-driving circuit is coupled to a first control signal line, and the end of the liquid crystal element in the first sub-driving circuit away from the pixel electrode is coupled to a first reference electrode. Similarly, the gate of the first transistor in the second sub-driving circuit is coupled to a second control signal line, and the end of the liquid crystal element in the first sub-driving circuit away from the pixel electrode is coupled to a second reference electrode.

[0007] Optionally, the driving timing of the field-sequence pixel driving circuit is configured such that, in the Nth frame of the positive polarity frame, the first reference signal of the first reference electrode remains at a low level, and the second reference signal of the second reference electrode jumps to a normal potential and remains there. At this time, the voltage difference across the liquid crystal element of the first sub-driving circuit is greater than the critical voltage, and the liquid crystal element of the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line jumps to a high potential, the first transistor of the first sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the positive polarity data signal. At the same time, the liquid crystal element of the second sub-driving circuit generates a voltage difference across its terminals according to the positive polarity data signal voltage written to the pixel electrode in the (N-1)th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element of the second sub-driving circuit remains in a light-emitting state.

[0008] Optionally, in the (N+1)th frame of the positive polarity frame, the first reference signal of the first reference electrode jumps to a normal potential, and the second reference signal of the second reference electrode jumps to a high potential and remains there. At this time, the liquid crystal element of the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in the Nth frame and the first reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element of the first sub-driving circuit remains in an luminous state. Simultaneously, the voltage difference across the liquid crystal element of the second sub-driving circuit is greater than the critical voltage, and the liquid crystal element of the second sub-driving circuit remains in a non-luminous state. After the second control signal line jumps to a high potential, the first transistor of the second sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the negative polarity data signal.

[0009] Optionally, in the (N+2)th frame of the negative polarity frame, the first reference signal of the first reference electrode jumps to a high level, and the second reference signal of the second reference electrode jumps to a normal potential and remains there. At this time: the voltage difference across the liquid crystal element of the first sub-driving circuit is greater than the critical voltage, and the liquid crystal element of the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line jumps to a high potential, the first transistor of the first sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the negative polarity data signal. At the same time, the liquid crystal element of the second sub-driving circuit generates a voltage difference across its terminals according to the negative polarity data signal voltage written to the pixel electrode in the (N+1)th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element of the second sub-driving circuit remains in a light-emitting state.

[0010] Optionally, in the (N+3)th frame of the negative polarity frame, the first reference signal of the first reference electrode jumps to a normal potential, and the second reference signal of the second reference electrode jumps to a low potential and remains there. At this time, the liquid crystal element of the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in the (N+2)th frame and the first reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element of the first sub-driving circuit remains in an emitting state. Simultaneously, the voltage difference across the liquid crystal element of the second sub-driving circuit is greater than the critical voltage, and the liquid crystal element of the second sub-driving circuit remains in a non-emitting state. After the second control signal line jumps to a high potential, the first transistor of the second sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the positive polarity data signal.

[0011] Optionally, the first sub-driving circuit is configured such that: the first source and drain of the first transistor of the first sub-driving circuit are coupled to the data signal line, the gate is coupled to the first control signal line, and the second source and drain are coupled to the pixel electrode; one end of the storage capacitor of the first sub-driving circuit is coupled to the common electrode line, and the other end is coupled to the pixel electrode; one end of the liquid crystal element of the first sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the first reference electrode.

[0012] Optionally, the second sub-driving circuit is configured such that: the first source and drain of the first transistor of the second sub-driving circuit are coupled to the data signal line, the gate is coupled to the second control signal line, and the second source and drain are coupled to the pixel electrode; one end of the storage capacitor of the second sub-driving circuit is coupled to the common electrode line, and the other end is coupled to the pixel electrode; one end of the liquid crystal element of the second sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the second reference electrode.

[0013] Optionally, the first transistor (T11) is configured as an N-type thin-film field-effect transistor.

[0014] Optionally, both the pixel electrode and the reference electrode are electrode plates formed of a transparent conductive material.

[0015] Optionally, the liquid crystal element is configured in a normally white mode.

[0016] The primary improvement of this invention lies in the high aperture ratio pixel driving circuit for alternating display. By setting up a first sub-driving circuit and a second sub-driving circuit, it can be ensured that in each frame, one sub-pixel corresponding to a sub-driving circuit is in a normal light-emitting state, while the sub-pixel corresponding to the other sub-driving circuit can synchronously write the pixel voltage signal required for the next frame. Since its pixel electrode and reference electrode are in a conductive state, this sub-pixel liquid crystal element will not transmit light and will not display incorrect grayscale. Through the aforementioned driving circuit and corresponding signal timing control, the function of alternating light emission of sub-pixels in frames is achieved. This allows for synchronous writing of data signal voltage and light emission, thereby significantly increasing the light emission time and improving the brightness of the display device, or reducing the power consumption of the backlight unit, while simultaneously achieving field-sequence display. Furthermore, the data signal voltage writing time can also be significantly increased, which is beneficial for realizing high-resolution, high-refresh-rate display devices.

[0017] Meanwhile, by using the improved circuit in conjunction with the changes in the reference signal, the emission / non-emission of each sub-pixel can be controlled by timing with only one TFT, which greatly reduces the number of TFTs and signal lines used, significantly improves the pixel aperture ratio, and further enhances the light output brightness. Attached Figure Description

[0018] Figure 1 This is a simplified circuit diagram of the alternating high aperture ratio pixel driving circuit of the present invention;

[0019] Figure 2 This is a timing diagram of the driving circuit for the alternating high aperture ratio pixel driving circuit of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0024] 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 application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] Specifically, such as Figure 1As shown, a high aperture ratio pixel driving circuit for alternating displays is characterized by comprising: a first sub-driving circuit and a second sub-driving circuit. Both the first and second sub-driving circuits include a first transistor T11, a pixel electrode, a storage capacitor Cs1, and a liquid crystal element Clc. The gate of the first transistor T11 in the first sub-driving circuit is coupled to a first control signal line Scan_O, and the end of the liquid crystal element Clc in the first sub-driving circuit away from the pixel electrode is coupled to a first reference electrode VREF10. The gate of the first transistor T11 in the second sub-driving circuit is coupled to a second control signal line Scan_E, and the end of the liquid crystal element Clc in the first sub-driving circuit away from the pixel electrode is coupled to a second reference electrode VREF20. The liquid crystal element Clc is configured in a normally white mode, meaning that its transmittance is highest when the voltage difference between the electrodes at both ends of the liquid crystal element is near 0V, and the liquid crystal element is opaque when the voltage difference between the electrodes at both ends of the liquid crystal element is greater than a critical voltage (denoted as Vop, a positive value).

[0029] Specifically, to facilitate understanding of the operating timing of the pixel driving circuit, as follows: Figure 2 As shown.

[0030] In the Nth frame of a positive polarity frame, the first reference signal of the first reference electrode VREF10 remains low, and the second reference signal of the second reference electrode VREF20 jumps to a normal potential and remains there. Here, a positive polarity frame indicates that the pixel voltage Vpixel ≥ Vcom (the reference voltage of the electrode other than the pixel electrode when emitting light), while a negative polarity frame indicates that Vpixel ≤ Vcom. At this time:

[0031] When the voltage difference across the liquid crystal element Clc in the first sub-driving circuit is greater than the critical voltage, the liquid crystal element Clc in the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line Scan_O jumps to a high potential row by row (Scan_O1~Scan_O n, where 1 and n represent pixels in different rows. In a liquid crystal panel, there are 2n rows of pixels by default, which corresponds to n first sub-driving circuits and n second sub-driving circuits), the first transistor T11 of the first sub-driving circuit turns on row by row and writes the data signal voltage to the pixel electrode based on the positive polarity data signal. At this time, the data signal voltage Vdata ranges from Vcom to (Vcom+Vop). Therefore, when the potential of the first reference signal is set to ≤Vcom-Vop in the Nth frame, the voltage difference across the liquid crystal element Clc in any row of the first sub-driving circuit is ≥Vop, that is, any row of the first sub-driving circuit can remain in a non-light-emitting state.

[0032] Meanwhile, the liquid crystal element Clc of the second sub-driving circuit generates a voltage difference across its two ends based on the positive polarity data signal voltage written to the pixel electrode in the (N-1)th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element Clc of the second sub-driving circuit remains in the light-emitting state.

[0033] In the (N+1)th frame, the first reference signal of the first reference electrode VREF10 jumps to a normal potential, and the second reference signal of the second reference electrode VREF20 jumps to a high potential and remains there. At this time:

[0034] The liquid crystal element Clc in the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in the Nth frame and the first reference signal. This voltage difference is less than a threshold voltage, and the liquid crystal element Clc in the first sub-driving circuit remains in an luminescent state. Simultaneously...

[0035] When the voltage difference across the liquid crystal element Clc in the second sub-driving circuit exceeds the critical voltage, the liquid crystal element Clc remains in a non-emissive state. After the second control signal line Scan_E transitions to a high potential line by line, the first transistor T11 of the second sub-driving circuit turns on line by line and writes a data signal voltage to the pixel electrode based on the negative polarity data signal. This data signal voltage Vdata ranges from Vcom to (Vcom-Vop).

[0036] In the (N+2)th frame of the negative polarity frame, the first reference signal of the first reference electrode VREF10 jumps to a high level, and the second reference signal of the second reference electrode VREF20 jumps to a normal potential and remains there. At this time:

[0037] When the voltage difference across the liquid crystal element Clc in the first sub-driving circuit is greater than the critical voltage, the liquid crystal element Clc in the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line Scan_O jumps to a high potential line by line, the first transistor T11 of the first sub-driving circuit turns on line by line and writes the data signal voltage to the pixel electrode based on the negative polarity data signal.

[0038] Meanwhile, the liquid crystal element Clc of the second sub-driving circuit generates a voltage difference across its two ends based on the negative polarity data signal voltage written to the pixel electrode in the N+1th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element Clc of the second sub-driving circuit remains in the light-emitting state.

[0039] In the (N+3)th frame of the negative polarity frame, the first reference signal of the first reference electrode VREF10 jumps to a normal potential, and the second reference signal of the second reference electrode VREF20 jumps to a low potential and remains there. At this time:

[0040] The liquid crystal element Clc of the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in the (N+2)th frame and the first reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element Clc of the first sub-driving circuit remains in an luminous state.

[0041] Simultaneously, the voltage difference across the liquid crystal element Clc in the second sub-driving circuit exceeds the critical voltage, and the liquid crystal element Clc remains in a non-emissive state. After the second control signal line Scan_ line-by-line E jumps to a high potential, the first transistor T11 of the second sub-driving circuit turns on line-by-line and writes the data signal voltage to the pixel electrode based on the positive polarity data signal. Figure 2 In this context, LC Response represents the time required for the liquid crystal on the sub-pixel to flip to the desired angle, during which the backlight is off. Display indicates that the backlight is on, meaning the sub-pixel is emitting light normally.

[0042] It should be noted that N is an odd number and a positive integer, which can be configured as 1, 3, 5, 7... in the above embodiments.

[0043] It should also be noted that, in this invention, "high potential" and "low potential" refer to the difference in potential relative to the common electrode potential, and "normal potential" refers to a potential equal to the common electrode potential Vcom. For example, a potential higher than Vcom is considered a high potential; a potential lower than Vcom is considered a low potential. Specifically, in this invention, a high potential means: potential ≥ Vcom + Vop; a low potential means: potential ≤ Vcom - Vop.

[0044] This invention, by setting up a first sub-driving circuit and a second sub-driving circuit, ensures that in each frame, one sub-pixel corresponding to a sub-driving circuit is in a normal light-emitting state, while the sub-pixel corresponding to the other sub-driving circuit can synchronously write the pixel voltage signal required for the next frame. Since its pixel electrode and reference electrode are in a conductive state, this sub-pixel liquid crystal element will not transmit light and will not display incorrect grayscale. Through the aforementioned driving circuit and corresponding signal timing control, the function of sub-pixels alternately emitting light frame by frame is achieved. This allows for the synchronous writing of data signal voltage and light emission, thereby significantly increasing the light emission time and improving the brightness of the display device, or reducing the power consumption of the backlight unit, while simultaneously achieving field-sequence display. Furthermore, the data signal voltage writing time can also be significantly increased, which is beneficial for realizing high-resolution, high-refresh-rate display devices.

[0045] Meanwhile, by using the improved circuit in conjunction with the changes in the reference signal, the emission / non-emission of each sub-pixel can be controlled by timing with only one TFT, which greatly reduces the number of TFTs and signal lines used, significantly improves the pixel aperture ratio, and further enhances the light output brightness.

[0046] Furthermore, the first sub-driving circuit is configured such that: the first source and drain of the first transistor T11 of the first sub-driving circuit are coupled to the data signal Data, the gate is coupled to the first control signal line Scan_O, and the second source and drain are coupled to the pixel electrode; one end of the storage capacitor Cs1 of the first sub-driving circuit is coupled to the common electrode line Vcom, and the other end is coupled to the pixel electrode; one end of the liquid crystal element Clc of the first sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the first reference electrode VREF10.

[0047] Furthermore, the second sub-driving circuit is configured such that: the first source and drain of the first transistor T11 of the second sub-driving circuit are coupled to the data signal line Data, the gate is coupled to the second control signal line Scan_E, and the second source and drain are coupled to the pixel electrode; one end of the storage capacitor Cs1 of the second sub-driving circuit is coupled to the common electrode line Vcom, and the other end is coupled to the pixel electrode; one end of the liquid crystal element Clc of the second sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the second reference electrode VREF20.

[0048] It should be noted that in this embodiment, R, G, and B light are emitted frame by frame by backlight, and the visual persistence effect of the human eye is used to realize the display of color images. The order of R, G, and B backlight can be interchanged.

[0049] Furthermore, both the pixel electrode and the reference electrode are electrode plates formed of a transparent conductive material (preferably ITO). The electrode plate can be a single surface, a comb-like shape, or other shapes, depending on the display mode.

[0050] Furthermore, the first transistor T11 is configured as an N-type thin-film field-effect transistor, thereby as... Figure 2 The gate control signal voltage shown can turn on the TFT (transistor) when it is high and turn off the TFT when it is low, but this does not limit the scope of protection of this application. Those skilled in the art can adapt it by changing all or part of the TFT to P-type thin film field effect transistors based on the control principle.

[0051] The above describes the alternating high aperture ratio pixel driving circuit provided by the embodiments of the present invention. The various embodiments are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principle of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0052] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can implement the described functions using different methods for each specific application, but such implementation should not be considered beyond the scope of the invention. The steps of the methods or algorithms described in connection with the embodiments disclosed herein can be implemented directly in hardware, software modules executed by a processor, or a combination of both. Software modules can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art.

Claims

1. A high aperture ratio pixel driving circuit for alternating displays, characterized in that, include: A first sub-driving circuit and a second sub-driving circuit, each including a first transistor (T11), a pixel electrode, a storage capacitor (Cs1), and a liquid crystal element (Clc). The gate of the first transistor (T11) in the first sub-driving circuit is coupled to a first control signal line (Scan_O), and the end of the liquid crystal element (Clc) in the first sub-driving circuit, away from the pixel electrode, is coupled to a first reference electrode (VREF10). Similarly, the gate of the first transistor (T11) in the second sub-driving circuit is coupled to a second control signal line (Scan_E), and the end of the liquid crystal element (Clc) in the first sub-driving circuit, away from the pixel electrode, is coupled to a second reference electrode (VREF20). The driving timing of the field-sequence pixel driving circuit is configured such that, in the Nth frame of the positive polarity frame, the first reference signal of the first reference electrode (VREF10) remains at a low level, and the second reference signal of the second reference electrode (VREF20) transitions to a normal potential and remains there. At this time: the voltage difference across the liquid crystal element (Clc) of the first sub-driving circuit is greater than the critical voltage, and the liquid crystal element (Clc) of the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line (Scan_O) transitions to a high potential, the first transistor (T11) of the first sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the positive polarity data signal; simultaneously, a voltage difference is generated across the liquid crystal element (Clc) of the second sub-driving circuit according to the positive polarity data signal voltage written to the pixel electrode in the (N-1)th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element (Clc) of the second sub-driving circuit remains in a light-emitting state. In the (N+1)th frame of the positive polarity frame, the first reference signal of the first reference electrode (VREF10) jumps to a normal potential, and the second reference signal of the second reference electrode (VREF20) jumps to a high potential and remains there. At this time, the liquid crystal element (Clc) of the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in the Nth frame and the first reference signal. This voltage difference is less than the critical voltage, so the liquid crystal element (Clc) of the first sub-driving circuit remains in the light-emitting state. At the same time, the voltage difference across the liquid crystal element (Clc) of the second sub-driving circuit is greater than the critical voltage, so the liquid crystal element (Clc) of the second sub-driving circuit remains in the non-light-emitting state. After the second control signal line (Scan_E) jumps to a high potential, the first transistor (T11) of the second sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the negative polarity data signal.

2. The high aperture ratio pixel driving circuit according to claim 1, characterized in that, In the (N+2)th frame of the negative polarity frame, the first reference signal of the first reference electrode (VREF10) jumps to a high level, and the second reference signal of the second reference electrode (VREF20) jumps to a normal potential and remains there. At this time, the voltage difference across the liquid crystal element (Clc) of the first sub-driving circuit is greater than the critical voltage, and the liquid crystal element (Clc) of the first sub-driving circuit remains in a non-light-emitting state. After the first control signal line (Scan_O) jumps to a high potential, the first transistor (T11) of the first sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the negative polarity data signal. At the same time, the liquid crystal element (Clc) of the second sub-driving circuit generates a voltage difference across its terminals according to the negative polarity data signal voltage written to the pixel electrode in the (N+1)th frame and the second reference signal. This voltage difference is less than the critical voltage, and the liquid crystal element (Clc) of the second sub-driving circuit remains in a light-emitting state.

3. The high aperture ratio pixel driving circuit according to claim 2, characterized in that, At frame N+3 of the negative polarity frame, the first reference signal of the first reference electrode (VREF10) jumps to a normal potential, and the second reference signal of the second reference electrode (VREF20) jumps to a low potential and remains there. At this time, the liquid crystal element (Clc) of the first sub-driving circuit generates a voltage difference across its terminals based on the data signal voltage written to the pixel electrode in frame N+2 and the first reference signal. This voltage difference is less than the critical voltage, so the liquid crystal element (Clc) of the first sub-driving circuit remains in the light-emitting state. At the same time, the voltage difference across the liquid crystal element (Clc) of the second sub-driving circuit is greater than the critical voltage, so the liquid crystal element (Clc) of the second sub-driving circuit remains in the non-light-emitting state. After the second control signal line (Scan_E) jumps to a high potential, the first transistor (T11) of the second sub-driving circuit turns on and writes the data signal voltage to the pixel electrode based on the positive polarity data signal.

4. The high aperture ratio pixel driving circuit according to claim 1, characterized in that, The first sub-driving circuit is configured such that the first source and drain of the first transistor (T11) of the first sub-driving circuit are coupled to the data signal line (Data), the gate is coupled to the first control signal line (Scan_O), and the second source and drain are coupled to the pixel electrode. One end of the storage capacitor (Cs1) of the first sub-driving circuit is coupled to the common electrode line (Vcom), and the other end is coupled to the pixel electrode. One end of the liquid crystal element (Clc) of the first sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the first reference electrode (VREF10).

5. The high aperture ratio pixel driving circuit according to claim 4, characterized in that, The second sub-driving circuit is configured such that the first source and drain of the first transistor (T11) of the second sub-driving circuit are coupled to the data signal line (Data), the gate is coupled to the second control signal line (Scan_E), and the second source and drain are coupled to the pixel electrode; One end of the storage capacitor (Cs1) of the second sub-driving circuit is coupled to the common electrode line (Vcom), and the other end is coupled to the pixel electrode. One end of the liquid crystal element (Clc) of the second sub-driving circuit is coupled to the pixel electrode, and the other end is coupled to the second reference electrode (VREF20).

6. The high aperture ratio pixel driving circuit according to claim 1, characterized in that, The first transistor (T11) is configured as an N-type thin-film field-effect transistor.

7. The high aperture ratio pixel driving circuit according to claim 1, characterized in that, Both the pixel electrode and the reference electrode are electrode plates formed of transparent conductive material.

8. The high aperture ratio pixel driving circuit according to claim 1, characterized in that, The liquid crystal element (Clc) is configured in a normally white mode.

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