Pixel display circuit and control method thereof

Abstract

The invention discloses a pixel display circuit and a control method thereof, and belongs to the technical field of display. The control end of a driving module and the control end of an enhancement module are charged through a data writing module; the storage module stores the potentials of the control end of the driving module and the control end of the enhancement module; the driving module provides a first driving current for the light-emitting module according to the potential of the control end in the light-emitting stage; the enhancement module provides a second driving current for the light-emitting module according to the potential of the control end in the peep-proof mode of the light-emitting stage; the light emitting control module responds to the control signal and transmits a target driving current; the target driving current is formed by converging the first driving current and the second driving current; the light-emitting module emits light under the excitation of the target driving current; therefore, while the screen body brightness is improved, the hardware design is simplified, and the cost is reduced.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular, relates to a pixel display circuit and a control method thereof. Background Art

[0002] Organic electroluminescent devices (such as organic light-emitting diodes (OLED)) have many advantages and are widely used in smart display terminal display products. At present, OLED display products not only need to have the function of screen sharing display status, but also need to have the function of anti-peeping display status. When using OLED display products in public scenes, it is necessary to share screen information so that the OLED display product is in a screen sharing display state. When using OLED display products in scenarios involving privacy, the OLED display product needs to dynamically switch to the anti-peeping display state.

[0003] However, the related pixel display circuit cannot simplify the hardware design and reduce the cost while improving the brightness of the screen. Summary of the invention

[0004] The purpose of the present application is to provide a pixel display circuit and a control method thereof, aiming to solve the problem that the related pixel display circuit cannot simplify the hardware design and reduce the cost while improving the brightness of the screen.

[0005] An embodiment of the present application provides a pixel display circuit, comprising:

[0006] A data writing module, connected to the driving module and the enhancing module, and used to charge the control end of the driving module and the control end of the enhancing module;

[0007] A storage module, connected to the driving module and the enhancing module, and used to store the potentials of the control end of the driving module and the control end of the enhancing module;

[0008] The driving module is used to provide a first driving current to the light-emitting module according to the potential of its control terminal during the light-emitting stage;

[0009] The enhancement module is used to provide a second driving current to the light emitting module according to the potential of its own control terminal in the anti-peeping mode of the light emitting stage;

[0010] A light emitting control module, configured to transmit a target driving current in response to a control signal; the target driving current is formed by combining the first driving current and the second driving current;

[0011] The light-emitting module is used to emit light under the stimulation of the target driving current;

[0012] The driving module is connected in parallel with the enhancing module and then connected in series with the light-emitting control module between the power supply and the light-emitting module.

[0013] In one embodiment, the present invention further comprises: a threshold compensation module connected to the control end of the driving module, the first end of the driving module and the storage module;

[0014] The data writing module is specifically used to write the data voltage into the control end of the driving module and the control end of the enhancing module through the threshold compensation module during the data writing phase.

[0015] In one embodiment, the threshold compensation module includes a compensation transistor;

[0016] The first end of the compensation transistor is connected to the control end of the driving module, the control end of the enhancement module and the storage module;

[0017] The second end of the compensation transistor is connected to the first end of the driving module;

[0018] The gate of the compensation transistor serves as the first scanning signal input terminal of the threshold compensation module to receive the first scanning signal.

[0019] In one embodiment, it also includes:

[0020] The initialization module is connected to the light emitting module, the driving module and the enhancing module, and is used to initialize the light emitting module, the control end of the driving module and the control end of the enhancing module in an initialization phase.

[0021] In one embodiment, the initialization module includes a first initialization transistor and a second initialization transistor;

[0022] The first end of the first initialization transistor and the first end of the second initialization transistor serve as reference voltage input ends of the initialization module to access a reference voltage;

[0023] The second end of the first initialization transistor is connected to the control end of the driving module, the control end of the enhancement module and the storage module;

[0024] The second end of the second initialization transistor is connected to the light emitting module;

[0025] The control terminal of the first initialization transistor is used as a second scanning signal input terminal to receive the second scanning signal;

[0026] The control terminal of the second initialization transistor serves as a third scan signal input terminal to receive the third scan signal.

[0027] In one embodiment, the enhancement module includes a first switch tube and an enhancement transistor;

[0028] The first end of the first switch tube serves as the second end of the enhancement module and is connected to the second end of the driving module; the second end of the driving module is used to access the power supply voltage;

[0029] The second end of the first switch tube is connected to the first end of the enhancement transistor M5;

[0030] The control end of the first switch tube is used as the start signal input end of the enhancement module to receive the start signal;

[0031] The second end of the enhancement transistor is used as the first end of the enhancement module and is connected to the first end of the driving module; the first end of the driving module is used to output a first driving current;

[0032] The gate of the enhancement transistor serves as the control terminal of the enhancement module and is connected to the control terminal of the driving module and the storage module.

[0033] In one embodiment, the data writing module includes a data writing transistor;

[0034] The first end of the data writing transistor serves as a data signal input end of the data writing module to receive a data signal;

[0035] The second end of the data writing transistor serves as a data signal output end of the data writing module, and is connected to the second end of the enhancement module and the second end of the driving module to receive the data signal;

[0036] The gate of the data writing transistor serves as the first scanning signal input terminal of the data writing module to receive the first scanning signal.

[0037] In one embodiment, the driving module includes a driving transistor;

[0038] The first end of the driving transistor is used as the second end of the driving module, connected to the data writing module and the enhancement module; the second end of the driving module is used to access the power supply voltage;

[0039] The second end of the driving transistor serves as the first end of the driving module, connected to the light-emitting module and the enhancement module; the first end of the driving module is used to output a first driving current; the gate of the driving transistor serves as the control end of the driving module, connected to the control ends of the storage module and the enhancement module.

[0040] In one embodiment, the light emitting control module includes a first light emitting control transistor and / or a second light emitting control transistor;

[0041] The first end of the first light-emitting control transistor is used as a power supply voltage input end of the light-emitting control module and is connected to the power supply to access the power supply voltage; the second end of the first light-emitting control transistor is connected to the second end of the driving module;

[0042] The first end of the second light emitting control transistor is connected to the first end of the driving module; the second end of the first light emitting control transistor is used as the target driving current output end of the light emitting control module and is connected to the light emitting module to output the target driving current;

[0043] The gate of the first light emitting control transistor and / or the gate of the second light emitting control transistor serve together as a control terminal of the light emitting control module to receive a control signal.

[0044] The present application also provides a control method for a pixel display circuit, which is applied to the above-mentioned pixel display circuit, comprising:

[0045] In the data writing stage, the data writing module charges the control end of the driving module and the control end of the enhancing module, and the storage module stores the potential of the control end of the driving module and the control end of the enhancing module;

[0046] In the sharing mode of the light-emitting stage, the driving module provides a first driving current to the light-emitting module, the light-emitting control module transmits the first driving current, and the light-emitting module emits light under the stimulation of the first driving current;

[0047] In the anti-peep mode of the light-emitting stage, the driving module provides the first driving current to the light-emitting module, the enhancing module provides the second driving current to the light-emitting module, the light-emitting control module transmits the target driving current, and the light-emitting module emits light under the stimulation of the target driving current; the target driving current is formed by the convergence of the first driving current and the second driving current.

[0048] In one embodiment, before the data writing stage, the method further includes:

[0049] In the initialization stage, the initialization module initializes the light emitting module, the control end of the driving module and the control end of the enhancing module.

[0050] An embodiment of the present invention further provides an electronic device, wherein the electronic device includes the above-mentioned pixel display circuit.

[0051] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: in the sharing mode, the enhancement module can be turned off to stop the output of the second driving current; in the anti-peeping mode of the light-emitting stage, the enhancement module provides the second driving current to the light-emitting module according to the potential of its own control terminal; the light-emitting control module transmits the target driving current in response to the control signal to stimulate the light-emitting module to emit light; the target driving current is formed by the convergence of the first driving current and the second driving current; thereby, while switching between the sharing mode and the anti-peeping mode is achieved through only one driving module, the brightness of the screen is improved in the anti-peeping mode, the hardware design is simplified, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical invention in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A schematic diagram of a structure of a pixel display circuit provided in an embodiment of the present application;

[0054] Figure 2 Another structural schematic diagram of a pixel display circuit provided in an embodiment of the present application;

[0055] Figure 3 Another structural schematic diagram of a pixel display circuit provided in an embodiment of the present application;

[0056] Figure 4 A partial exemplary circuit schematic diagram of a pixel display circuit provided in an embodiment of the present application;

[0057] Figure 5 The waveform diagram of each signal in the control method of the pixel display circuit provided in one embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0059] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0060] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] Figure 1 The structure diagram of the pixel display circuit provided by the preferred embodiment of the present application is shown. For the convenience of explanation, only the part related to the present embodiment is shown, which is described in detail as follows:

[0063] The pixel display circuit comprises a data writing module 01 , a storage module 02 , a driving module 03 , an enhancement module 04 , a light emitting control module 05 and a light emitting module 06 .

[0064] The data writing module 01 is connected to the driving module 03 and the enhancing module 04 , and is used to charge the control end of the driving module 03 and the control end of the enhancing module 04 .

[0065] The storage module 02 is connected to the driving module 03 and the enhancing module 04 , and is used to store the potentials of the control end of the driving module 03 and the control end of the enhancing module 04 .

[0066] The driving module 03 is used to provide a first driving current to the light emitting module 06 according to the potential of its own control terminal during the light emitting stage.

[0067] The enhancement module 04 is used to provide a second driving current to the light emitting module 06 according to the potential of its own control terminal in the anti-peeping mode of the light emitting stage.

[0068] The light emitting control module 05 is used to transmit a target driving current in response to a control signal; the target driving current is formed by the convergence of the first driving current and the second driving current.

[0069] The light emitting module 06 is used to emit light under the stimulation of a target driving current.

[0070] The driving module 03 is connected in parallel with the enhancing module 04 and then connected in series with the light-emitting control module 05 between the power supply and the light-emitting module 06 .

[0071] Currently, there are two mainstream solutions for anti-peeping display, namely pixel segmentation and electrochromic.

[0072] The pixel segmentation solution divides pixels into shared pixels and privacy mode pixels. The privacy mode pixels are equipped with a light shield to block the light from a large viewing angle, thereby achieving a privacy display mode. This solution requires the configuration of twice as many pixels and their driving circuits, which makes the hardware design complex and costly.

[0073] The electrochromic solution adds a shading body structure, which can change the light transmission characteristics of the shading body by applying electricity to achieve dynamic anti-peeping display; this solution will cause the brightness of the main viewing angle to decrease, resulting in a lower screen brightness.

[0074] It can be understood that in the shared mode, the enhancement module 04 can be turned off to stop the output of the second driving current; in the anti-peeping mode of the light-emitting stage, the enhancement module provides the second driving current to the light-emitting module according to the potential of its own control terminal; the light-emitting control module transmits the target driving current in response to the control signal to stimulate the light-emitting module to emit light; the target driving current is formed by the convergence of the first driving current and the second driving current; thereby, while switching between the shared mode and the anti-peeping mode is achieved only through one driving module 03, the brightness of the screen is improved in the anti-peeping mode, the hardware design is simplified, and the cost is reduced.

[0075] like Figure 2 As shown, the pixel display circuit further includes: a threshold compensation module 07 connected to the control end of the driving module 03 , the first end of the driving module 03 and the storage module 02 .

[0076] The data writing module 01 is specifically used to write the data voltage into the control end of the driving module 03 and the control end of the enhancing module 04 through the threshold compensation module 07 during the data writing phase.

[0077] It can be understood that, in the data writing stage, the data writing module 01 and the threshold compensation module 07 form a path, so that the data voltage is written into the control end of the driving module 03 and the control end of the enhancing module 04 .

[0078] The threshold compensation module 07 realizes the threshold compensation of the driving module 03 .

[0079] like Figure 3 As shown, the above pixel display circuit also includes an initialization module 08.

[0080] The initialization module 08 is connected to the light emitting module 06 , the driving module 03 and the enhancing module 04 , and is used to initialize the control end of the light emitting module 06 , the driving module 03 and the enhancing module 04 in the initialization stage.

[0081] The initialization module 08 is used to initialize the control end of the driving module 03 and the control end of the enhancement module 04 , and initialize the light emitting module 06 to prevent image sticking.

[0082] Figure 4 A partial exemplary circuit structure of a pixel display circuit provided by an embodiment of the present invention is shown. For the sake of convenience, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0083] The threshold compensation module 07 includes a compensation transistor M1 .

[0084] The first end of the compensation transistor M1 is connected to the control end of the driving module 03, the control end of the enhancement module 04 and the storage module 02; the second end of the compensation transistor M1 is connected to the first end of the driving module 03; the gate of the compensation transistor M1 serves as the first scanning signal input end of the threshold compensation module 07 to access the first scanning signal.

[0085] The initialization module 08 includes a first initialization transistor M2 and a second initialization transistor M3 .

[0086] The first end of the first initialization transistor M2 and the first end of the second initialization transistor M3 serve as a reference voltage input end of the initialization module 08 to access the reference voltage; the second end of the first initialization transistor M2 is connected to the control end of the driving module 03, the control end of the enhancement module 04 and the storage module 02; the second end of the second initialization transistor M3 is connected to the light-emitting module 06; the control end of the first initialization transistor M2 serves as a second scan signal input end to access the second scan signal; the control end of the second initialization transistor M3 serves as a third scan signal input end to access the third scan signal.

[0087] The gate potential of the driving transistor M7 is initialized by the first initialization transistor M2 , and the anode potential of the light emitting diode LED1 is initialized by the second initialization transistor M3 .

[0088] The enhancement module 04 includes a first switch tube M4 and an enhancement transistor M5.

[0089] The first end of the first switch tube M4 is connected to the second end of the driving module 03 as the second end of the enhancement module 04; the second end of the first switch tube M4 is connected to the first end of the enhancement transistor M5; the control end of the first switch tube M4 is used as the start signal input end of the enhancement module 04 to access the start signal; the second end of the enhancement transistor M5 is connected to the first end of the driving module 03 as the first end of the enhancement module 04; the gate of the enhancement transistor M5 is connected to the control end of the driving module 03 and the storage module 02 as the control end of the enhancement module 04. The second end of the driving module 03 is used to access the power supply voltage; the first end of the driving module 03 is used to output the first driving current.

[0090] It should be noted that the magnitude of the second driving current can be adjusted by configuring the width-to-length ratio of the enhancement transistor M5.

[0091] The data writing module 01 includes a data writing transistor M6 .

[0092] The first end of the data writing transistor M6 serves as the data signal input end of the data writing module 01 to access the data signal; the second end of the data writing transistor M6 serves as the data signal output end of the data writing module 01, and is connected to the second end of the enhancement module 04 and the second end of the driving module 03 to access the data signal; the gate of the data writing transistor M6 serves as the first scanning signal input end of the data writing module 01 to access the first scanning signal.

[0093] The driving module 03 includes a driving transistor M7.

[0094] The first end of the driving transistor M7 is used as the second end of the driving module 03, connected to the data writing module 01 and the enhancing module 04; the second end of the driving transistor M7 is used as the first end of the driving module 03, connected to the light emitting module 06 and the enhancing module 04; the gate of the driving transistor M7 is used as the control end of the driving module 03, connected to the control ends of the storage module 02 and the enhancing module 04. The second end of the driving module 03 is used to access the power supply voltage; the first end of the driving module 03 is used to output the first driving current.

[0095] The light emission control module 05 includes a first light emission control transistor M8 and / or a second light emission control transistor M9.

[0096] The first end of the first light-emitting control transistor M8 serves as the power supply voltage input end of the light-emitting control module 05, and is connected to the power supply to access the power supply voltage; the second end of the first light-emitting control transistor M8 is connected to the second end of the driving module 03; the first end of the second light-emitting control transistor M9 is connected to the first end of the driving module 03; the second end of the first light-emitting control transistor M8 serves as the target driving current output end of the light-emitting control module 05, and is connected to the light-emitting module 06 to output the target driving current; the gate of the first light-emitting control transistor M8 and / or the gate of the second light-emitting control transistor M9 jointly serve as the control end of the light-emitting control module 05 to access the control signal.

[0097] It should be noted that each of the above transistors and switch tubes can be a P-type field effect tube.

[0098] The following is a combination of working principles Figure 4 As shown for further explanation:

[0099] In the initialization stage, the second scanning signal S2 is at a low level, and the reference voltage VREF is written to the gate of the driving transistor M7 and the gate of the enhancement transistor M5 through the first initialization transistor M2; the third scanning signal S3 is at a low level, and the reference voltage VREF is written to the anode of the light-emitting diode LED1 through the second initialization transistor M3, and the anode potential of the light-emitting diode LED1 is initialized to reduce the possibility of afterimage;

[0100] In the data writing stage, the first scanning signal S1 is at a low level, the data writing transistor M6 and the compensation transistor M1 are turned on, the data voltage VDATA is sequentially written to the gate of the driving transistor M7 through the data writing transistor M6, the driving transistor M7 and the compensation transistor M1, and the data voltage VDATA is charged to the capacitor C1, so that the voltage at the first end of the capacitor C1 is the data voltage VDATA, so as to maintain the gate potential of the driving transistor M7;

[0101] In the sharing mode of the light-emitting stage, the first scanning signal S1 and the second scanning signal S2 are both at a high level, the control signal EM is at a low level, the first light-emitting control transistor M8 and / or the second light-emitting control transistor M9 is turned on, the driving transistor M7 provides a first driving current according to the supply voltage and the gate potential, and transmits the first driving current to the light-emitting diode LED1 through the second light-emitting control transistor M9, so as to drive the light-emitting diode LED1 to emit light;

[0102] In the anti-peeping mode of the light-emitting stage, the first scanning signal S1 and the second scanning signal S2 are both high levels, the control signal EM and the start signal EM1 are low levels, the first light-emitting control transistor M8 and / or the second light-emitting control transistor M9 are turned on, the driving transistor M7 provides a first driving current according to the power supply voltage and the gate potential, the first switch tube M4 is turned on, the enhancement transistor M5 provides a second driving current according to the power supply voltage and the gate potential, and transmits the target driving current to the light-emitting diode LED1 through the second light-emitting control transistor M9 to drive the light-emitting diode LED1 to emit light; wherein, the target driving current is formed by the convergence of the first driving current and the second driving current.

[0103] It should be noted that the third scanning signal S3 can be set to a low level simultaneously with the first scanning signal S1 , and can also be set to a low level simultaneously with the second scanning signal S2 .

[0104] The present application also provides a control method for a pixel display circuit, which is applied to the pixel display circuit as described above, and includes step 110 and step 130 .

[0105] In step 110, in the data writing stage, the data writing module charges the control end of the driving module and the control end of the enhancing module, and the storage module stores the potential of the control end of the driving module and the control end of the enhancing module;

[0106] In step 120, in the sharing mode of the light-emitting stage, the driving module provides a first driving current to the light-emitting module, the light-emitting control module transmits the first driving current, and the light-emitting module emits light under the stimulation of the first driving current;

[0107] In step 130, in the anti-peep mode of the light-emitting stage, the driving module provides the first driving current to the light-emitting module, the enhancement module provides the second driving current to the light-emitting module, the light-emitting control module transmits the target driving current, and the light-emitting module emits light under the stimulation of the target driving current; the target driving current is formed by the convergence of the first driving current and the second driving current.

[0108] In one embodiment, step 100 is further included before the data writing stage.

[0109] In step 110, in the initialization stage, the initialization module initializes the light emitting module, the control end of the driving module and the control end of the enhancing module.

[0110] In a specific implementation, the waveform diagram of each signal in a control method of a pixel display circuit is as follows: Figure 5 shown.

[0111] First, entering the initialization phase, the first scanning signal S1, the control signal EM and the start signal EM1 are at high level, the second scanning signal S2 is at high level, and the initialization module initializes the control end of the driving module and the control end of the enhancement module.

[0112] Then, the data writing stage is entered, the second scanning signal S2, the control signal EM and the start signal EM1 are high levels, the first scanning signal S1 and the third scanning signal S3 are high levels, the data writing module charges the control end of the driving module and the control end of the enhancing module, and the storage module stores the control end potential of the driving module and the control end potential of the enhancing module.

[0113] Again, entering the shared mode of the light-emitting stage, the first scanning signal S1, the third scanning signal S3, the second scanning signal S2 and the start signal EM1 are at a high level, the control signal EM is at a low level, the driving module provides a first driving current to the light-emitting module, and the light-emitting control module transmits a target driving current (at this time the target driving current is the first driving current), and the light-emitting module emits light under the excitation of the target driving current.

[0114] Finally, the anti-peeping mode of the light-emitting stage is entered, the first scanning signal S1, the third scanning signal S3 and the second scanning signal S2 are high level, the start signal EM1 and the control signal EM are low level, the driving module provides the first driving current to the light-emitting module, the light-emitting control module transmits the target driving current, the enhancement module provides the second driving current to the light-emitting module, the light-emitting control module transmits the target driving current, and the light-emitting module emits light under the excitation of the target driving current; at this time, the target driving current is formed by the convergence of the first driving current and the second driving current.

[0115] An embodiment of the present invention further provides an electronic device, which includes the above-mentioned pixel display circuit.

[0116] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0117] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A pixel display circuit, characterized in that: include: A data writing module, connected to the driving module and the enhancing module, and used to charge the control end of the driving module and the control end of the enhancing module; A storage module, connected to the driving module and the enhancing module, and used to store the potentials of the control end of the driving module and the control end of the enhancing module; The driving module is used to provide a first driving current to the light-emitting module according to the potential of its control terminal during the light-emitting stage; The enhancement module is used to provide a second driving current to the light emitting module according to the potential of its own control terminal in the anti-peeping mode of the light emitting stage; A light emitting control module, configured to transmit a target driving current in response to a control signal; the target driving current is formed by combining the first driving current and the second driving current; The light-emitting module is used to emit light under the stimulation of the target driving current; The driving module is connected in parallel with the enhancing module and then connected in series with the light-emitting control module between the power supply and the light-emitting module.

2. The pixel display circuit according to claim 1, characterized in that: Also includes: a threshold compensation module connected to the control end of the driving module, the first end of the driving module and the storage module; The data writing module is specifically used to write the data voltage into the control end of the driving module and the control end of the enhancing module through the threshold compensation module during the data writing phase.

3. The pixel display circuit according to claim 2, characterized in that: The threshold compensation module includes a compensation transistor; The first end of the compensation transistor is connected to the control end of the driving module, the control end of the enhancement module and the storage module; The second end of the compensation transistor is connected to the first end of the driving module; The gate of the compensation transistor serves as the first scanning signal input terminal of the threshold compensation module to receive the first scanning signal.

4. The pixel display circuit according to claim 1, wherein: Also includes: The initialization module is connected to the light emitting module, the driving module and the enhancing module, and is used to initialize the light emitting module, the control end of the driving module and the control end of the enhancing module in an initialization phase.

5. The pixel display circuit according to claim 4, characterized in that: The initialization module includes a first initialization transistor and a second initialization transistor; The first end of the first initialization transistor and the first end of the second initialization transistor serve as reference voltage input ends of the initialization module to access a reference voltage; The second end of the first initialization transistor is connected to the control end of the driving module, the control end of the enhancement module and the storage module; The second end of the second initialization transistor is connected to the light emitting module; The control terminal of the first initialization transistor is used as a second scanning signal input terminal to receive the second scanning signal; The control terminal of the second initialization transistor serves as a third scan signal input terminal to receive the third scan signal.

6. The pixel display circuit according to claim 1, wherein: The enhancement module includes a first switch tube and an enhancement transistor; The first end of the first switch tube serves as the second end of the enhancement module and is connected to the second end of the driving module; the second end of the driving module is used to access the power supply voltage; The second end of the first switch tube is connected to the first end of the enhancement transistor; The control end of the first switch tube is used as the start signal input end of the enhancement module to receive the start signal; The second end of the enhancement transistor is used as the first end of the enhancement module and is connected to the first end of the driving module; the first end of the driving module is used to output a first driving current; The gate of the enhancement transistor serves as the control terminal of the enhancement module and is connected to the control terminal of the driving module and the storage module.

7. The pixel display circuit according to claim 1, characterized in that: The data writing module includes a data writing transistor; The first end of the data writing transistor serves as a data signal input end of the data writing module to receive a data signal; The second end of the data writing transistor serves as a data signal output end of the data writing module, and is connected to the second end of the enhancement module and the second end of the driving module to receive the data signal; The gate of the data writing transistor serves as the first scanning signal input terminal of the data writing module to receive the first scanning signal.

8. The pixel display circuit according to claim 1, wherein: The driving module includes a driving transistor; The first end of the driving transistor is used as the second end of the driving module, connected to the data writing module and the enhancement module; the second end of the driving module is used to access the power supply voltage; The second end of the driving transistor serves as the first end of the driving module, connected to the light emitting module and the enhancing module; the first end of the driving module is used to output a first driving current; The gate of the driving transistor serves as the control terminal of the driving module and is connected to the control terminals of the storage module and the enhancement module.

9. The pixel display circuit according to claim 1, wherein: The light emitting control module includes a first light emitting control transistor and / or a second light emitting control transistor; The first end of the first light-emitting control transistor is used as a power supply voltage input end of the light-emitting control module and is connected to the power supply to access the power supply voltage; The second end of the first light emitting control transistor is connected to the second end of the driving module; The first end of the second light emitting control transistor is connected to the first end of the driving module; the second end of the first light emitting control transistor is used as the target driving current output end of the light emitting control module and is connected to the light emitting module to output the target driving current; The gate of the first light emitting control transistor and / or the gate of the second light emitting control transistor serve together as a control terminal of the light emitting control module to receive a control signal.

10. A method for controlling a pixel display circuit, applied to the pixel display circuit according to any one of claims 1 to 9, characterized in that: include: In the data writing stage, the data writing module charges the control end of the driving module and the control end of the enhancing module, and the storage module stores the potential of the control end of the driving module and the control end of the enhancing module; In the sharing mode of the light-emitting stage, the driving module provides a first driving current to the light-emitting module, the light-emitting control module transmits the first driving current, and the light-emitting module emits light under the stimulation of the first driving current; In the anti-peeping mode of the light-emitting stage, the driving module provides the first driving current to the light-emitting module, the enhancing module provides the second driving current to the light-emitting module, the light-emitting control module transmits the target driving current, and the light-emitting module emits light under the stimulation of the target driving current; The target driving current is formed by combining the first driving current and the second driving current.

11. The control method of the pixel display circuit according to claim 10, characterized in that: Before the data writing stage, the method further includes: In the initialization stage, the initialization module initializes the light emitting module, the control end of the driving module and the control end of the enhancing module.

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