Pixel circuit and display device

Abstract

A pixel circuit and a display device are disclosed that include a plurality of pixel driving modules, each of which includes: a main pixel control group including a main switch and a main pixel electrode, the main switch being controlled by a scanning signal on a current scanning line to transmit a data signal on a data line to the main pixel electrode; a next pixel control group including a next switch and a next pixel electrode, the next switch being controlled by a scanning signal on the current scanning line to transmit a data signal on the data line to the next pixel electrode; and a shared switch being controlled by a shared scanning signal on a shared scanning line to lower the potential of the next pixel electrode.

Description

[Technical field]

[0001] The present invention relates to the field of display technology, and in particular to pixel circuits and display devices. [Background technology]

[0002] In order to improve the color shift phenomenon of vertical alignment type liquid crystal display devices with large viewing angles, a pixel unit can be designed to have low color shift (LCS), for example, by dividing each subpixel unit into a main pixel electrode and a next pixel electrode. During display, the main pixel electrode and the next pixel electrode are first charged with the same potential, and then the potential of the next pixel electrode is lowered so that the potentials of the main pixel electrode and the next pixel electrode are different.

[0003] For example, the switch of the main pixel electrode, the switch of the secondary pixel electrode and the shared signal switch are controlled by the same signal line, the LCS curve has a downward trend, when the LCS characteristic parameter is low, the viewing angle is poor, and when the LCS characteristic parameter is high, the transmittance is poor. To improve this situation, other techniques have been proposed, such as changing the control method of the shared signal switch, but the LCS characteristic curve has a limited adjustable range and cannot simultaneously meet the viewing angle and transmittance requirements, and still needs to be improved. Summary of the Invention

[0004] According to the present invention, a pixel circuit and a display device are provided to improve the adjustable range of the low color shift curves of the prior art.

[0005] In order to solve the above problem, according to a first aspect of the present invention, there is provided a pixel circuit including a plurality of pixel driving modules, The pixel driving module includes: a main pixel control group including a main switch and a main pixel electrode, the main switch being configured to be controlled by a scanning signal of a main scanning line so as to transmit a data signal of a data line to the main pixel electrode; a next pixel control group including a next switch and a next pixel electrode, the next switch being configured to be controlled by a scanning signal of the current scanning line so as to transmit a data signal of the data line to the next pixel electrode; a shared switch configured to be controlled by a shared scanning signal of a shared scanning line so that the potential of the next pixel electrode is lowered; The main scanning line and the shared scanning line are insulated from each other, a scanning signal of the main scanning line is configured to have a first positive level pulse, and a shared scanning signal of the shared scanning line is configured to have a second positive level pulse that is slower than the first positive level pulse, and a pixel circuit having an interval time between the first positive level pulse and the second positive level pulse is provided.

[0006] According to one embodiment of the present invention, the main switch, the next switch and the shared switch are transistor switches each including a control end, a first end and a second end, and the control end of the main switch and the control end of the next switch are electrically connected to the current stage scanning line, and the control end of the shared switch is electrically connected to the shared scanning line.

[0007] According to an embodiment of the present invention, the shared switch has a first terminal electrically connected to the next pixel electrode and a second terminal of the next switch, and a second terminal electrically connected to a common electrode.

[0008] According to one embodiment of the present invention, the main pixel electrode and the next pixel electrode each include a liquid crystal capacitor and a storage capacitor, and the next pixel electrode has a liquid crystal capacitor electrically connected to the second end of the next switch and a first common electrode, a storage capacitor electrically connected to the second end of the next switch and a second common electrode, and a second end of the shared switch electrically connected to the second common electrode.

[0009] According to an embodiment of the present invention, the main scanning line and the shared scanning line are formed of two metal material layers. each and an insulating layer is provided between the two metal material layers.

[0010] According to one embodiment of the present invention, the shared switch is configured to be turned on such that the potential of the next pixel electrode is low.

[0011] According to one embodiment of the present invention, the pixel driving module is configured for blue sub-pixels, red sub-pixels, or blue and red sub-pixels.

[0012] In order to solve the above problem, according to a second aspect of the present invention, there is provided a pixel circuit including a plurality of pixel driving modules, The pixel driving module includes: a main pixel control group including a main switch and a main pixel electrode, the main switch being configured to be controlled by a scanning signal of a main scanning line so as to transmit a data signal of a data line to the main pixel electrode; a next pixel control group including a next switch and a next pixel electrode, the next switch being configured to be controlled by a scanning signal of the current scanning line so as to transmit a data signal of the data line to the next pixel electrode; a shared switch configured to be controlled by a shared scan signal on a shared scan line so that a potential of the next pixel electrode is lowered.

[0013] According to one embodiment of the present invention, the main switch, the next switch and the shared switch are transistor switches each including a control end, a first end and a second end, and the control end of the main switch and the control end of the next switch are electrically connected to the current stage scanning line, and the control end of the shared switch is electrically connected to the shared scanning line.

[0014] According to an embodiment of the present invention, the shared switch has a first terminal electrically connected to the next pixel electrode and a second terminal of the next switch, and a second terminal electrically connected to a common electrode.

[0015] According to one embodiment of the present invention, the main pixel electrode and the next pixel electrode each include a liquid crystal capacitor and a storage capacitor, and the next pixel electrode has a liquid crystal capacitor electrically connected to the second end of the next switch and a first common electrode, a storage capacitor electrically connected to the second end of the next switch and a second common electrode, and the shared switch has a second end electrically connected to the second common electrode.

[0016] According to an embodiment of the present invention, the main scan line and the shared scan line are insulated from each other.

[0017] According to an embodiment of the present invention, the main scanning line and the shared scanning line are formed of two metal material layers. each and an insulating layer is provided between the two metal material layers.

[0018] According to one embodiment of the present invention, the shared switch is configured to be turned on such that the potential of the next pixel electrode is low.

[0019] According to one embodiment of the present invention, the scanning signal of the main scanning line is configured to have a first positive level pulse, and the shared scanning signal of the shared scanning line is configured to have a second positive level pulse that is slower than the first positive level pulse, and there is an interval time between the first positive level pulse and the second positive level pulse.

[0020] According to one embodiment of the present invention, the pixel driving module is configured for blue sub-pixels, red sub-pixels, or blue and red sub-pixels.

[0021] In order to solve the above problem, according to a third aspect of the present invention, there is provided a display device including a pixel circuit as described above. Effect of the Invention

[0022] According to the pixel circuit and display device of the present invention, the main switch is configured to be controlled by the scanning signal of the main scanning line to transmit the data signal of the data line to the main pixel electrode, the next switch is configured to be controlled by the scanning signal of the main scanning line to transmit the data signal of the data line to the next pixel electrode, and the shared switch is configured to be controlled by the shared scanning signal of the shared scanning line to lower the potential of the next pixel electrode, so that the potential of the main pixel electrode and the potential of the next pixel electrode are different, which greatly increases the adjustable range of the LCS curve, and the differentiation of the liquid crystal deflection angle is appropriately controlled, so that the low grayscale viewing angle and high grayscale transmission requirements of the display device can be simultaneously met, the viewing angle can be improved, and the large viewing angle color shift phenomenon of the liquid crystal display device can be improved. [Brief description of the drawings]

[0023] In order to more clearly describe the technical means in the embodiments of the present invention, the following briefly describes the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0024] [Figure 1] FIG. 2 is a schematic diagram showing a pixel circuit according to an embodiment of the present invention. [Diagram 2] 10 is a schematic diagram showing pixel luminance changes when the shared switch according to the embodiment of the present invention is turned on with a 1 / 4 frame time delay from the main switch and the subsequent switch. FIG. [Diagram 3] FIG. 4 is a schematic diagram showing an interval time between a scanning signal and a shared scanning signal according to an embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram showing an LCS curve according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, the technical means in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments that a person skilled in the art can obtain without paying creative labor are all within the protection scope of the present invention.

[0026] In addition, in the description of this specification, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," etc. are based on the orientations or positional relationships shown in the drawings, and are for the convenience and simplification of the description of the present invention, and do not indicate or imply that the devices or elements shown have a specific orientation or are configured and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0027] It should be noted that in the description of this specification, the terms "first" and "second" are for descriptive purposes only and cannot be understood as indicating or implying a relative importance or the number of technical features being described. Thus, features qualified as "first" and "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more than two unless otherwise limited.

[0028] In this specification, many different embodiments or examples are provided to realize different structures of the present invention. In order to simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are merely examples and do not limit the present invention. In addition, in the present specification, symbols and / or reference characters may be repeated in different examples, but such repetition does not itself indicate a relationship between the various embodiments and / or settings discussed for the purpose of simplicity and clarity. In addition, the examples of various specific processes and materials provided in this specification may allow those skilled in the art to recognize the application of other processes and / or the use of other materials.

[0029] In a liquid crystal display panel, in order to improve the color shift phenomenon caused by a large viewing angle in a liquid crystal display device (such as a vertical alignment type), a pixel unit can be designed to have a low color shift (LCS).

[0030] For example, according to a first aspect of the present invention, a pixel circuit is provided that is applicable to a liquid crystal display device designed for low color shift, such as, but not limited to, a liquid crystal display device having a multi-domain (e.g., 4-domain or 8-domain) architecture.

[0031] As shown in Fig. 1, the pixel circuit includes a plurality of pixel driving modules L for driving a plurality of sub-pixels (e.g., red, green, and blue sub-pixels). For example, the pixel driving module L includes a main pixel control group M and a subsequent pixel control group S. For example, the pixel driving module L including the main pixel control group M and the subsequent pixel control group Sw may be configured for a blue sub-pixel, a red sub-pixel, or a blue and red sub-pixel, which is advantageous for optimizing the display effect, but is not limited thereto.

[0032] 1, the main pixel control group M may include a main switch T1 and a main pixel electrode P1. The main switch T1 may be configured to be controlled by a scanning signal G(n) of a main scanning line WG(n) to transmit a data signal D of a data line WD to the main pixel electrode P1, where n is a positive integer and indicates a specific single-stage scanning configuration in a multi-stage scanning architecture.

[0033] 1, the next pixel control group S may include a next switch T2 and a next pixel electrode P2. The next switch T2 may be configured to be controlled by the scanning signal G(n) of the current stage scanning line WG(n) to transmit the data signal D of the data line WD to the next pixel electrode P2.

[0034] As shown in Fig. 1, the pixel driving module may further include a shared switch T3. The shared switch T3 may be configured to be controlled by a shared scanning signal SG(n) of a shared scanning line WSG(n) so that the potential of the next pixel electrode P2 is low.

[0035] Examples of the pixel circuit are given below, but the present invention is not limited to these.

[0036] For example, as shown in Fig. 1, the main switch T1, the secondary switch T2 and the shared switch T3 are each a transistor switch. The transistor switch includes a control end, a first end and a second end, for example, but not limited to, a gate, a drain and a source of a thin film transistor (TFT). The control end can control an on state between the first end and the second end by an electrical signal such that a signal of the first end is transmitted to the second end.

[0037] As shown in Fig. 1, the main switch T1 has a control end electrically connected to the scan line WG(n), a first end electrically connected to the data line WD, and a second end electrically connected to the main pixel electrode P1. For example, the main pixel electrode P1 includes a liquid crystal capacitor C11 and a storage capacitor C12. The liquid crystal capacitor C11 is electrically connected between the second end of the main switch T1 and a first common electrode Ccom, and the storage capacitor C12 is electrically connected between the second end of the main switch T1 and a second common electrode Acom.

[0038] As shown in Fig. 1, the control end of the secondary switch T2 is electrically connected to the scan line WG(n), a first end is electrically connected to the data line WD, and a second end is electrically connected to the secondary pixel electrode P2. For example, the secondary pixel electrode P2 includes a liquid crystal capacitor C21 and a storage capacitor C22. The liquid crystal capacitor C21 is electrically connected between a second end of the secondary switch T2 and the first common electrode Ccom, and the storage capacitor C22 is electrically connected between a second end of the secondary switch T2 and the second common electrode Acom.

[0039] As shown in FIG. 1, the shared switch T3 has a control end electrically connected to the shared scan line WSG(n), a first end electrically connected to the next pixel electrode P2 (e.g., the liquid crystal capacitor C21 and the storage capacitor C22) and the second end of the next switch T2, and a second end electrically connected to the second common electrode Acom.

[0040] As shown in FIG. 1, during display, the main switch T1 and the next switch T2 are controlled to be turned on (ON) by the scanning signal G(n) of the current scanning line WG(n), and at the same time, the shared switch T3 is controlled to be turned off (OFF) by the shared scanning signal SG(n) of the shared scanning line WSG(n). This allows the data signal D of the data line WD to be transmitted to the main pixel electrode P1 and the next pixel electrode P2, so that the main pixel electrode P1 (for example, the liquid crystal capacitor C11 and the storage capacitor C12) and the next pixel electrode P2 (for example, the liquid crystal capacitor C21 and the The storage capacitors C22) are charged to the same potential (for example, a high potential), and then the main switch T1 and the next switch T2 are controlled to be turned off by the scanning signal G(n) of the main scanning line WG(n), and at the same time, the shared switch T3 is controlled to be turned on by the shared scanning signal SG(n) of the shared scanning line WSG(n). As a result, the potentials of the main pixel electrode P1 and the next pixel electrode P2 become different. For example, the next pixel electrode P2 is discharged to the second common electrode Acom via the shared switch T3, and the potential of the next pixel electrode P2 becomes lower than the potential of the main pixel electrode P1.

[0041] Optionally, in one embodiment, as shown in Fig. 1, the main switch T1, the next switch T2 and the shared switch T3 are transistor switches each including a control end, a first end and a second end. The control end of the main switch T1 and the control end of the next switch T2 are electrically connected to the scanning line WG(n), and the control end of the shared switch T3 is electrically connected to the shared scanning line WSG(n). Thus, the control end of the shared switch can be controlled independently of the control end of the main switch and the control end of the next switch, so that the luminance ratio between the main pixel electrode and the next pixel electrode can be controlled.

[0042] Optionally, in one embodiment, as shown in Fig. 1, the first end of the shared switch T3 is electrically connected to the next pixel electrode P2 and the second end of the next switch T2, and the second end is electrically connected to a common electrode, so that the next pixel electrode is discharged through the shared switch, and the potential of the next pixel electrode is lower than the potential of the main pixel electrode, which is favorable for improving the viewing angle.

[0043] Optionally, in one embodiment, as shown in FIG. 1, the main pixel electrode P1 and the next pixel electrode P2 each include a liquid crystal capacitor (e.g., C11, C21) and a storage capacitor (e.g., C12, C22). The next pixel electrode P2 has a liquid crystal capacitor C21 electrically connected to the second end of the next switch T2 and a first common electrode Ccom, a storage capacitor C22 electrically connected to the second end of the next switch T2 and a second common electrode Acom, and a second end of the shared switch T3 electrically connected to the second common electrode Acom. Thus, the next pixel electrode is discharged to the second common electrode through the shared switch, so that the potential of the main pixel electrode and the potential of the next pixel electrode are different, and the differentiation of the deflection angle of the liquid crystal is appropriately controlled.

[0044] Optionally, in one embodiment, as shown in Fig. 1, the common switch T3 is configured to be turned on so that the potential of the next pixel electrode P2 is lowered, so that the potential of the next pixel electrode is lower than the potential of the main pixel electrode, and the potential of the main pixel electrode and the potential of the next pixel electrode are different, thereby improving the large viewing angle color shift phenomenon of the liquid crystal display device.

[0045] Optionally, in one embodiment, as shown in FIG. 1, the main scan line WG(n) and the shared scan line WSG(n) are insulated from each other. For example, the main scan line WG(n) and the shared scan line WSG(n) are insulated from each other by two metal material layers. eachand an insulating layer is provided between the two metal material layers to prevent control signals from interfering with each other, whereby the scanning signal of the main scanning line and the shared scanning signal of the shared scanning line can be independent of each other, and the time length of the shared scanning signal can be adjusted by time division between the scanning signals, which is favorable for flexible adjustment of the potential and luminance ratio of the next pixel electrode and the main pixel electrode.

[0046] In addition, the length of time that the potential of the next pixel electrode is at a high potential and a low potential is adjustable (time division) so that low color shift (LCS) characteristic parameters (e.g., the ratio of the luminance of the next pixel electrode to the luminance of the main pixel electrode) can be flexibly adjusted.

[0047] For example, taking the pixel luminance when the shared switch is turned on with a 1 / 4 frame time delay from the main switch and the next switch as an example, Fig. 2 is a schematic diagram showing a pixel luminance change when the shared switch is turned on with a 1 / 4 frame time delay from the main switch and the next switch, where the pixel luminance or voltage shown on the vertical axis has a positive correlation, and the horizontal axis shows time. In FIG. 2, taking the time length of two frames as an example, here, U1 indicates that the brightness line of a high gray scale main pixel electrode is generated when the main pixel electrode is maintained at a high level (e.g., 14 volts) by turning on the main switch, U2 indicates that the brightness line of a high gray scale sub-pixel electrode is generated when the sub-switch is turned on and off and the sub-pixel electrode has a high level pulse, U3 indicates that the brightness line of a low gray scale main pixel electrode is generated when the main pixel electrode is maintained at a low level (e.g., 0.2 volts) by turning on the main switch, U4 indicates that the brightness line of a low gray scale sub-pixel electrode is generated during charging and discharging of the sub-pixel electrode by turning on and off the sub-switch, and U5 indicates a voltage line at which the shared switch is turned on with a delay of 1 / 4 frame time from the main switch and the sub-switch.

[0048] In FIG. 2, as indicated by a line U1, the main pixel electrode maintains a high luminance at the time of a high gray scale, and as indicated by a line U3, the main pixel electrode maintains a low luminance at the time of a low gray scale.

[0049] In FIG. 2, as shown by lines U2 and U5, when the next switch is turned on (high level shown in line U2) and the shared switch is turned off (low level shown in line U5), the next pixel electrode maintains high brightness (as shown in line U2) at high gradation levels, and when the next switch is turned off (low level shown in line U2) and the shared switch is turned on (high level shown in line U5), the next pixel electrode maintains low brightness (as shown in line U2) at high gradation levels so that the brightness is different from that of the main pixel electrode.

[0050] After the common switch is turned on, the voltage of the next pixel electrode drops, causing a change in brightness. However, since the luminance change frequency is the same as the refresh frequency of the display panel, and the luminance change frequency of a flicker screen is not twice the refresh frequency of the display panel, the change in brightness after the common switch is turned on does not cause noticeable flicker.

[0051] In FIG. 2, as shown by lines U4 and U5, after the common switch is turned on, in another frame (for example, frame 2 in FIG. 2), when the next switch is turned on (high level shown in line U2) and the common switch is turned off (low level shown in line U5), the luminance of the next pixel electrode at low gradation gradually increases (shown in line U4) due to the slow response of the liquid crystal at low gradation, and when the luminance of the next pixel electrode has not yet reached the luminance of the main pixel electrode, the next switch is turned off and the common switch is turned on (high level shown in line U5), causing the next pixel electrode to start discharging, and the luminance of the next pixel electrode at low gradation gradually decreases (shown in line U4). As a result, the luminance of the next pixel electrode at low gradation becomes lower, so that the LCS feature parameter at low gradation becomes lower than the LCS feature parameter at high gradation, and the LCS characteristic curve tends to rise.

[0052] 2, as shown by lines U2, U4 and U5, after the common switch is turned on, the voltage of the next pixel electrode decreases, so the luminance of the next pixel electrode decreases. Since the LCS feature parameter is the ratio between the luminance of the next pixel electrode and the luminance of the main pixel electrode, by adjusting the time when the common switch is turned on, the luminance of the next pixel electrode can be adjusted, and thus the LCS feature parameter can be adjusted.

[0053] As shown in FIG. 1, the main scanning line WG(n) and the shared scanning line WSG(n) are insulated from each other, and the scanning signal G(n) of the main scanning line WG(n) and the shared scanning signal SG(n) of the shared scanning line WSG(n) are distributed separately, so that the on-time of the shared switch T3 can be controlled individually.

[0054] For example, as shown in FIG. 1 and FIG. 3, after a certain interval time t has elapsed since the pulse of the scanning signal G(n) of the main scanning line WG(n) transitions from a high level to a low level, the pulse of the shared scanning signal SG(n) of the shared scanning line WSG(n) transitions from a low level to a high level, so that the next pixel electrode P2 maintains a high potential. After the interval time t has elapsed, the potential of the next pixel electrode P2 is controlled to decrease, so that the potential of the next pixel electrode P2 becomes lower than the potential of the main pixel electrode P1, so that the potential of the main pixel electrode P1 and the potential of the next pixel electrode P2 become different. The differentiation of the deflection angle of the liquid crystal is appropriately controlled, thereby improving the viewing angle and improving the large viewing angle color shift phenomenon of the liquid crystal display device.

[0055] Optionally, in one embodiment, as shown in Figures 1 and 3, the scanning signal G(n) of the scanning line WG(n) is configured to have a first positive level pulse, and the shared scanning signal SG(n) of the shared scanning line WSG(n) is configured to have a second positive level pulse that is slower than the first positive level pulse, and has an interval time between the first positive level pulse and the second positive level pulse, so that the potential and brightness ratio between the main pixel electrode and the secondary pixel electrode can be adjusted by adjusting the interval time.

[0056] Furthermore, according to a second aspect of the present invention, there is provided a display device including the above-described pixel circuit, such as a liquid crystal display device having a low color shift architecture, and the details of its implementation can be referred to the above-described embodiment, but the description thereof will be omitted.

[0057] In addition, according to the pixel circuit and display device of the above embodiment of the present invention, the on and off times of the shared switch are individually controlled, so that the display process of the sub-pixel has a time division effect. As shown in FIG. 4, the adjustable range in which the LCS curve V has an upward trend can be greatly increased, and the lower the LCS characteristic parameter in the low gray scale range (shown in range E1), the better the viewing angle effect, and the higher the LCS characteristic parameter in the high gray scale range (shown in range E2), the better the transmission effect, so that the display device can simultaneously meet the low gray scale viewing angle and high gray scale transmission requirements. Thus, according to the pixel circuit and display device of the above embodiment of the present invention, the problems caused by the LCS curve of the prior art having a downward trend and the limited adjustable range, such as when the viewing angle and transmittance are limited, can be improved.

[0058] According to the pixel circuit and display device of the above embodiment of the present invention, the main switch is configured to be controlled by the scanning signal of the main scanning line to transmit the data signal of the data line to the main pixel electrode, the next switch is configured to be controlled by the scanning signal of the main scanning line to transmit the data signal of the data line to the next pixel electrode, and the shared switch is configured to be controlled by the shared scanning signal of the shared scanning line to lower the potential of the next pixel electrode, so that the potential of the main pixel electrode and the potential of the next pixel electrode are different, which greatly increases the adjustable range of the LCS curve, and the differentiation of the liquid crystal deflection angle can be appropriately controlled to simultaneously meet the low grayscale viewing angle and high grayscale transmission requirements of the display device, thereby improving the viewing angle and improving the large viewing angle color shift phenomenon of the liquid crystal display device.

[0059] The above describes the embodiments of the present invention in detail, and the present specification describes the principles and embodiments of the present invention by applying specific examples. The above description of the embodiments is only to facilitate understanding of the technical means of the present invention and its core idea, and those skilled in the art can still modify the technical means described in each of the above embodiments or replace some of the technical features with equivalents, and it should be understood that these modifications or replacements do not deviate from the essence of the corresponding technical means from the scope of the technical means of each of the embodiments of the present invention.

Claims

1. A pixel circuit including a plurality of pixel driving modules, The pixel driving module includes: a main pixel control group including a main switch and a main pixel electrode, the main switch being configured to be controlled by a scanning signal of a main scanning line so as to transmit a data signal of a data line to the main pixel electrode; a next pixel control group including a next switch and a next pixel electrode, the next switch being configured to be controlled by a scanning signal of the current scanning line so as to transmit a data signal of the data line to the next pixel electrode; a shared switch configured to be controlled by a shared scanning signal of a shared scanning line so that the potential of the next pixel electrode is lowered; the main scanning line and the shared scanning line are insulated from each other, the scanning signal of the main scanning line is configured to have a first positive level pulse, the shared scanning signal of the shared scanning line is configured to have a second positive level pulse that is slower than the first positive level pulse, and an interval time is provided between the first positive level pulse and the second positive level pulse; The main scanning line and the shared scanning line are respectively formed on two metal material layers, and an insulating layer is provided between the two metal material layers. Pixel circuit.

2. The main switch, the next switch and the shared switch are transistor switches each including a control end, a first end and a second end, the control end of the main switch and the control end of the next switch are electrically connected to the current stage scanning line, and the control end of the shared switch is electrically connected to the shared scanning line. The pixel circuit of claim 1 .

3. the shared switch has a first end electrically connected to the next pixel electrode and a second end of the next switch, and a second end electrically connected to a common electrode; The pixel circuit of claim 2 .

4. The main pixel electrode and the next pixel electrode each include a liquid crystal capacitor and a storage capacitor, and the next pixel electrode has a liquid crystal capacitor electrically connected to the second end of the next switch and a first common electrode, a storage capacitor electrically connected to the second end of the next switch and a second common electrode, and a second end of the shared switch electrically connected to the second common electrode. The pixel circuit of claim 3 .

5. The shared switch is configured to be turned on so that the potential of the next pixel electrode is low. The pixel circuit of claim 1 .

6. the pixel driving module is configured for a blue subpixel, a red subpixel, or a blue and red subpixel; The pixel circuit of claim 1 .

7. A pixel circuit including a plurality of pixel driving modules, The pixel driving module includes: a main pixel control group including a main switch and a main pixel electrode, the main switch being configured to be controlled by a scanning signal of a main scanning line so as to transmit a data signal of a data line to the main pixel electrode; a next pixel control group including a next switch and a next pixel electrode, the next switch being configured to be controlled by a scanning signal of the current scanning line so as to transmit a data signal of the data line to the next pixel electrode; a shared switch configured to be controlled by a shared scanning signal of a shared scanning line so that the potential of the next pixel electrode is lowered; The main scanning line and the shared scanning line are respectively formed on two metal material layers, and an insulating layer is provided between the two metal material layers. Pixel circuit.

8. The main switch, the next switch and the shared switch are transistor switches each including a control end, a first end and a second end, the control end of the main switch and the control end of the next switch are electrically connected to the current stage scanning line, and the control end of the shared switch is electrically connected to the shared scanning line.

8. The pixel circuit of claim 7.

9. the shared switch has a first end electrically connected to the next pixel electrode and a second end of the next switch, and a second end electrically connected to a common electrode; 9. The pixel circuit of claim 8.

10. The main pixel electrode and the next pixel electrode each include a liquid crystal capacitor and a storage capacitor, and the next pixel electrode has a liquid crystal capacitor electrically connected to the second end of the next switch and a first common electrode, a storage capacitor electrically connected to the second end of the next switch and a second common electrode, and a second end of the shared switch electrically connected to the second common electrode.

10. The pixel circuit of claim 9.

11. the main scanning line and the shared scanning line are insulated from each other; 8. The pixel circuit of claim 7.

12. The shared switch is configured to be turned on so that the potential of the next pixel electrode is low.

8. The pixel circuit of claim 7.

13. The scanning signal of the main scanning line is configured to have a first positive level pulse, and the common scanning signal of the common scanning line is configured to have a second positive level pulse that is slower than the first positive level pulse, and an interval time is provided between the first positive level pulse and the second positive level pulse.

8. The pixel circuit of claim 7.

14. the pixel driving module is configured for a blue subpixel, a red subpixel, or a blue and red subpixel; 8. The pixel circuit of claim 7.

15. A pixel circuit comprising the pixel circuit according to any one of claims 7 to 14. Display device.

Images