A gate-controlled stacked structure light-emitting device brightness compensation driving method

Abstract

The present invention discloses a gate-controlled stacked structure light-emitting device brightness compensation driving method, comprising: controlling a first power supply to apply a detection current to the light-emitting device to collect the actual luminous brightness of the light-emitting device; obtaining the current luminous efficiency of the light-emitting device based on the actual luminous brightness and the standard luminous brightness corresponding to the detection current; obtaining a first gate voltage control function based on the current luminous efficiency; obtaining the current display grayscale value of the light-emitting device; obtaining a first display drive current based on the current display grayscale value; obtaining a first display drive gate voltage based on the first display drive current and the first gate voltage control function; controlling the first power supply to apply the first display drive current and controlling the first gate control electrode to apply the first display drive gate voltage to match the luminous brightness with the current display grayscale value. The present invention compensates the luminous brightness of the light-emitting device so that the luminous brightness meets the required display grayscale, thereby improving display quality.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic display, and in particular to a brightness compensation driving method for a gate-regulated stacked structure light-emitting device. Background Art

[0002] Light-emitting devices (LEDs) in optoelectronic displays are a crucial component of display devices, presenting images or information through the emission of light. Many devices, such as QLEDs (quantum dot light-emitting diodes) and OLEDs (organic light-emitting diodes), operate on the principle that upon application of power, electrons and holes combine in the light-emitting layer to form excitons. These excitons, when recombined, release energy and emit light. These devices offer advantages such as rich color reproduction, high contrast, fast response, wide viewing angles, and energy conservation and environmental protection.

[0003] These light-emitting devices will age over time, which may lead to a decrease in luminous efficiency, which can cause a mismatch between the displayed grayscale and the actual grayscale, thereby reducing display quality. Summary of the Invention

[0004] In view of some of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a gate-regulated stacked structure light-emitting device brightness compensation driving method, which aims to compensate the light-emitting brightness of the light-emitting device so that the light-emitting brightness meets the required display grayscale and improves the display quality.

[0005] To achieve the above objectives, the present invention provides a gate-controlled stacked structure light-emitting device brightness compensation driving method, which is applied to a gate-controlled stacked structure light-emitting device, wherein the light-emitting device includes a light-emitting unit, a gate insulating layer, and a first gate control electrode; the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode in sequence; the first electrode and the second electrode apply a first power supply, the first power supply is used to power the light-emitting unit to emit light, the first gate control electrode applies a gate voltage relative to the first electrode and / or the second electrode, the gate voltage is used to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the luminous brightness of the light-emitting unit; the method includes:

[0006] Step S1, controlling the first power supply to apply a detection current to the light-emitting device to collect the actual luminance of the light-emitting device; obtaining a brightness difference value based on the actual luminance and the standard luminance corresponding to the detection current;

[0007] Step S2: obtaining the current luminous efficiency of the light-emitting device according to the brightness difference; and matching a first gate voltage control function corresponding to the current luminous efficiency from a gate voltage function relationship table according to the current luminous efficiency; wherein the gate voltage function relationship table stores a plurality of gate voltage control functions, each of which is a functional relationship between a driving current and a driving gate voltage, and each of the gate voltage control functions is used to control the first gate control electrode to compensate for the luminous brightness of the light-emitting device at a corresponding luminous efficiency;

[0008] Step S3, obtaining a current display grayscale value of the light-emitting device; obtaining a corresponding first display driving current according to the current display grayscale value; obtaining a first display driving gate voltage according to the first display driving current and the first gate voltage regulation function;

[0009] Step S4: Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first display driving gate voltage to the first electrode and / or the second electrode, so that the luminous brightness of the light-emitting device matches the current display grayscale value.

[0010] Optionally, the light-emitting device further includes a second gate control electrode, which applies a gate voltage relative to the first electrode and / or the second electrode to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the luminous efficiency of the light-emitting unit; the step of obtaining the gate voltage function relationship table includes:

[0011] Controlling the first power supply to apply the detection current to the light-emitting device, and controlling the second gate control circuit to apply a first test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device is at a first test luminous efficiency;

[0012] Controlling the first gate control electrode to apply a second test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device reaches a standard luminous brightness corresponding to the detection current;

[0013] maintaining the first test gate voltage applied by the second gate control electrode unchanged, changing the drive current applied by the first power supply to the light-emitting device, and simultaneously changing the drive gate voltage applied by the first gate control electrode to ensure that the luminance of the light-emitting device always matches the applied drive current; recording each drive current and each drive gate voltage to obtain the gate voltage control function;

[0014] Repeat the experiment to obtain the gate voltage control function under different test luminous efficiencies, and obtain the gate voltage function relationship table.

[0015] Optionally, the gate voltage control function and the luminous efficiency corresponding to the detection current are stored in pairs in the gate voltage function relationship table.

[0016] Optionally, obtaining the first display driving gate voltage according to the first display driving current and the first gate voltage regulation function in step S3 includes:

[0017] Substitute the first display driving current into the first gate voltage regulation function to obtain a first display driving gate voltage; wherein the abscissa and ordinate of the first gate voltage regulation function are the driving current and the driving gate voltage, respectively.

[0018] Optionally, when the first gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, step S4 includes:

[0019] Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first negative display driving gate voltage to the second electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

[0020] Optionally, when the first gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are holes, step S4 includes:

[0021] Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first positive display driving gate voltage to the first electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

[0022] Optionally, when the first gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are holes, S4 includes:

[0023] Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first negative display driving gate voltage to the second electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

[0024] Optionally, when the first gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, S4 includes:

[0025] Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first positive display driving gate voltage to the first electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

[0026] Optionally, the light-emitting device is a quantum dot light-emitting diode, and the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer and an electron transport layer.

[0027] Optionally, the light-emitting device is an organic light-emitting diode, and the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer and an electron injection layer.

[0028] Beneficial effects of the present invention: The present invention obtains the luminous efficiency of the light-emitting device after long-term use by pre-loading the detection current before the light-emitting device performs display, and then searches for the gate voltage control function that can be compensated accordingly based on the luminous efficiency. The gate voltage control function is used to perform gate voltage control brightness compensation on each luminous brightness in the subsequent light-emitting display, so that the final luminous brightness of the light-emitting device matches the displayed grayscale value. The present invention uses the luminous brightness of the gate voltage light-emitting device to compensate for the luminous device whose luminous efficiency decreases due to long-term use, to ensure that under the same driving current, the luminous brightness of the light-emitting device meets the required brightness, thereby improving the display quality of the light-emitting device with decreased luminous efficiency. On the other hand, the brightness compensation of the present invention will not change the size of the driving current, thereby avoiding the impact of the non-uniform driving current of each light-emitting device on the overall drive of the display device.

[0029] In summary, the present invention compensates for the luminous brightness of a light-emitting device that has been used for a long time, so that the luminous brightness meets the required display grayscale, thereby improving the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of a brightness compensation driving method for a gate-controlled stacked structure light-emitting device provided by a specific embodiment of the present invention;

[0031] Figure 2 1 is a schematic structural diagram of a gate-controlled stacked structure light-emitting device provided in a first specific embodiment of the present invention;

[0032] Figure 3 1 is a schematic structural diagram of a gate-controlled stacked structure light-emitting device provided in a second specific embodiment of the present invention;

[0033] Figure 4 1 is a schematic structural diagram of a gate-controlled stacked structure light-emitting device provided in a third specific embodiment of the present invention;

[0034] Figure 5It is a schematic structural diagram of a gate-regulated stacked structure light-emitting device provided in the fourth specific embodiment of the present invention. DETAILED DESCRIPTION

[0035] The present invention discloses a gate-controlled, stacked-structure light-emitting device brightness compensation driving method. Those skilled in the art can refer to the contents of this document and appropriately improve the technical details for implementation. It should be noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in the present invention. The methods and applications of the present invention have been described through preferred embodiments. It is obvious that relevant personnel can modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit, and scope of the present invention to implement and apply the technology of the present invention.

[0036] The applicant's research has found that light-emitting devices can age over time, potentially leading to a decrease in luminous efficiency. This decrease in luminous efficiency can cause a mismatch between the displayed grayscale and the actual grayscale, resulting in a decrease in display quality. Improving this by increasing the drive current can easily lead to inconsistent drive currents across multiple identical light-emitting devices, increasing the difficulty of driving them.

[0037] Therefore, an embodiment of the present invention provides a gate-controlled stacked structure light-emitting device brightness compensation driving method, which is applied to a gate-controlled stacked structure light-emitting device, wherein the light-emitting device includes a light-emitting unit, a gate insulating layer, and a first gate control electrode; the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode in sequence; the first electrode and the second electrode apply a first power supply, the first power supply is used to power the light-emitting unit to emit light, the first gate control electrode applies a gate voltage relative to the first electrode and / or the second electrode, and the gate voltage is used to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the light-emitting brightness of the light-emitting unit; Figure 1 As shown, the method includes:

[0038] Step S1, controlling the first power supply to apply a detection current to the light emitting device, collecting the actual luminance of the light emitting device; obtaining a brightness difference value based on the actual luminance and the standard luminance corresponding to the detection current.

[0039] It should be noted that the embodiments of the present invention are applicable to light-emitting devices whose luminous efficiency decreases due to long-term use, or light-emitting devices whose luminous efficiency decreases due to other reasons.

[0040] In this specific embodiment, the luminous brightness can be collected using instruments such as a luminance meter and a spectral radiance meter.

[0041] In this specific embodiment, the light-emitting device is a quantum dot light-emitting diode, and the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer, and an electron transport layer.

[0042] In another specific embodiment, the light-emitting device is an organic light-emitting diode, and the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0043] Step S2: obtaining the current luminous efficiency of the light-emitting device according to the brightness difference; and matching a first gate voltage control function corresponding to the current luminous efficiency from a gate voltage function relationship table according to the current luminous efficiency.

[0044] Among them, the gate voltage function relationship table stores multiple gate voltage control functions, the gate voltage control function is the functional relationship between the driving current and the driving gate voltage, and each gate voltage control function is used to control the first gate control electrode to compensate for the luminous brightness of the light-emitting device under the corresponding luminous efficiency.

[0045] In this specific embodiment, obtaining the current luminous efficiency of the light-emitting device according to the brightness difference includes:

[0046] According to the standard luminous brightness, the initial luminous efficiency of the light-emitting device under normal conditions is obtained;

[0047] The current luminous efficiency of the light emitting device is obtained according to the brightness difference and the initial luminous efficiency.

[0048] In this specific embodiment, the light-emitting device further includes a second gate control electrode, which applies a gate voltage relative to the first electrode and / or the second electrode to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the luminous efficiency of the light-emitting unit; the step of obtaining the gate voltage function relationship table includes:

[0049] Controlling the first power supply to apply a detection current to the light-emitting device, and controlling the second gate control circuit to apply a first test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device is at a first test luminous efficiency;

[0050] Controlling the first gate control electrode to apply a second test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device reaches a standard luminous brightness corresponding to the detection current;

[0051] Maintaining the first test gate voltage applied by the second gate control electrode unchanged, changing the drive current applied by the first power supply to the light-emitting device, and simultaneously changing the drive gate voltage applied by the first gate control electrode to ensure that the luminance of the light-emitting device always matches the applied drive current; recording each drive current and each drive gate voltage to obtain a gate voltage control function;

[0052] Repeat the experiment to obtain the gate voltage control function under different test luminous efficiencies and obtain the gate voltage function relationship table.

[0053] It should be noted that steps S1-S4 of the embodiment of the present invention are driving steps during the use of the light-emitting device. Steps S1 and S2 are steps before performing a series of grayscale displays. They can be performed only once at a preset time or within a series of grayscale displays. Subsequent displays must be performed based on the first display drive gate voltage obtained in step S2. The step of obtaining the gate voltage function relationship table is a step in the production and preparation of the light-emitting device. The second gate control electrode in this step is used to simulate different luminous efficiencies of the light-emitting device, thereby obtaining the gate voltage control function for each test current and the corresponding test luminous efficiency.

[0054] In this specific embodiment, the gate voltage control function and the luminous efficiency corresponding to the detection current are stored in pairs in the gate voltage function relationship table.

[0055] It should be noted that, in this way, the corresponding gate voltage control function can be found by detecting the luminous efficiency corresponding to the current.

[0056] Step S3: obtaining a current display grayscale value of the light-emitting device; obtaining a corresponding first display driving current according to the current display grayscale value; and obtaining a first display driving gate voltage according to the first display driving current and a first gate voltage regulation function.

[0057] In this specific embodiment, obtaining the first display driving gate voltage according to the first display driving current and the first gate voltage control function in step S3 includes:

[0058] Substitute the first display driving current into the first gate voltage control function to obtain the first display driving gate voltage; wherein the abscissa and ordinate of the first gate voltage control function are the driving current and the driving gate voltage, respectively.

[0059] It should be noted that the two coordinate axes of the first gate voltage control function are the driving current and the driving gate voltage respectively, so that one can be obtained from the other.

[0060] Step S4: Control the first power supply to apply a first display driving current to the light emitting device, and control the first gate control electrode to apply a first display driving gate voltage to the first electrode and / or the second electrode, so that the light emitting brightness of the light emitting device matches the current display grayscale value.

[0061] It should be noted that existing technologies can compensate for brightness by varying the drive current. However, the luminous efficiency of each light-emitting device in a display device is often inconsistent due to varying losses. Consequently, when varying the drive current for compensation, light-emitting devices with varying losses will use different drive currents for the same grayscale value. This drive method is likely to cause drive disturbances and complicate the driver program. However, the gate control of the present invention is independent, allowing for brightness compensation without changing the drive current, effectively resolving this issue.

[0062] In the first specific embodiment, as Figure 2 As shown, when the gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, step S4 includes:

[0063] The first power supply is controlled to apply a first display driving current to the light emitting device, and the first gate control electrode is controlled to apply a negative first display driving gate voltage to the second electrode, so that the light emitting brightness of the light emitting device matches the current display grayscale value.

[0064] It should be noted that when the OLED / QLED light-emitting functional layer of this embodiment is a QLED, the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer, and an electron transport layer. When the OLED / QLED light-emitting functional layer of this embodiment is an OLED, the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0065] In the second specific embodiment, Figure 3 As shown, when the gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are holes, step S4 includes:

[0066] The first power supply is controlled to apply a first display driving current to the light emitting device, and the first gate control electrode is controlled to apply a positive first display driving gate voltage to the first electrode, so that the light emitting brightness of the light emitting device matches the current display grayscale value.

[0067] It should be noted that when the OLED / QLED light-emitting functional layer of this embodiment is a QLED, the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer, and an electron transport layer. When the OLED / QLED light-emitting functional layer of this embodiment is an OLED, the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0068] In the third specific embodiment, Figure 4 As shown, when the gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are holes, S4 includes:

[0069] The first power supply is controlled to apply a first display driving current to the light emitting device, and the first gate control electrode is controlled to apply a negative first display driving gate voltage to the second electrode, so that the light emitting brightness of the light emitting device matches the current display grayscale value.

[0070] It should be noted that when the OLED / QLED light-emitting functional layer of this embodiment is a QLED, the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer, and an electron transport layer. When the OLED / QLED light-emitting functional layer of this embodiment is an OLED, the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0071] In the fourth specific embodiment, Figure 5 As shown, when the gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, S4 includes:

[0072] The first power supply is controlled to apply a first display driving current to the light emitting device, and the first gate control electrode is controlled to apply a positive first display driving gate voltage to the first electrode, so that the light emitting brightness of the light emitting device matches the current display grayscale value.

[0073] It should be noted that when the OLED / QLED light-emitting functional layer of this embodiment is a QLED, the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer, and an electron transport layer. When the OLED / QLED light-emitting functional layer of this embodiment is an OLED, the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0074] The embodiment of the present invention obtains the luminous efficiency of the light-emitting device after long-term use by pre-loading the detection current before the light-emitting device performs display, and then searches for the gate voltage control function that can be compensated accordingly based on the luminous efficiency. The gate voltage control function is used to perform gate voltage control brightness compensation on each luminous brightness in the subsequent light-emitting display, so that the final luminous brightness of the light-emitting device matches the displayed grayscale value. The embodiment of the present invention uses the luminous brightness of the gate voltage light-emitting device to compensate for the luminous device whose luminous efficiency has decreased due to long-term use, to ensure that under the same driving current, the luminous brightness of the light-emitting device meets the required brightness, thereby improving the display quality of the light-emitting device with decreased luminous efficiency. On the other hand, the brightness compensation of the embodiment of the present invention will not change the size of the driving current, thereby avoiding the impact of the non-uniform driving current of each light-emitting device on the overall drive of the display device.

[0075] In summary, the embodiments of the present invention compensate for the luminous brightness of a light-emitting device that has been used for a long time, so that the luminous brightness meets the required display grayscale, thereby improving the display quality.

[0076] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0077] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0078] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A gate-controlled stacked structure light emitting device brightness compensation driving method, applied to a gate-controlled stacked structure light emitting device, characterized in that: The light-emitting device includes a light-emitting unit, a gate insulating layer, and a first gate control electrode; the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode in sequence; a first power supply is applied to the first electrode and the second electrode, the first power supply is used to power the light-emitting unit to emit light, and the first gate control electrode applies a gate voltage relative to the first electrode and / or the second electrode, the gate voltage is used to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the luminance of the light-emitting unit; the method includes: Step S1, controlling the first power supply to apply a detection current to the light-emitting device to collect the actual luminance of the light-emitting device; obtaining a brightness difference value based on the actual luminance and the standard luminance corresponding to the detection current; Step S2: obtaining the current luminous efficiency of the light-emitting device according to the brightness difference; and matching a first gate voltage control function corresponding to the current luminous efficiency from a gate voltage function relationship table according to the current luminous efficiency; wherein the gate voltage function relationship table stores a plurality of gate voltage control functions, each of which is a functional relationship between a driving current and a driving gate voltage, and each of the gate voltage control functions is used to control the first gate control electrode to compensate for the luminous brightness of the light-emitting device at a corresponding luminous efficiency; Step S3, obtaining a current display grayscale value of the light-emitting device; obtaining a corresponding first display driving current according to the current display grayscale value; obtaining a first display driving gate voltage according to the first display driving current and the first gate voltage regulation function; Step S4: controlling the first power supply to apply the first display driving current to the light-emitting device, and controlling the first gate control electrode to apply a first display driving gate voltage to the first electrode and / or the second electrode, so that the light emitting brightness of the light-emitting device matches the current display grayscale value; The light-emitting device further includes a second gate control electrode, which applies a gate voltage relative to the first electrode and / or the second electrode to construct an electric field to control the mobility of carriers in the light-emitting unit and adjust the luminous efficiency of the light-emitting unit; the step of obtaining the gate voltage function relationship table includes: Controlling the first power supply to apply the detection current to the light-emitting device, and controlling the second gate control circuit to apply a first test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device is at a first test luminous efficiency; Controlling the first gate control electrode to apply a second test gate voltage to the first electrode and / or the second electrode, so that the light-emitting device reaches a standard luminous brightness corresponding to the detection current; maintaining the first test gate voltage applied by the second gate control electrode unchanged, changing the drive current applied by the first power supply to the light-emitting device, and simultaneously changing the drive gate voltage applied by the first gate control electrode to ensure that the luminance of the light-emitting device always matches the applied drive current; recording each drive current and each drive gate voltage to obtain the gate voltage control function; Repeat the experiment to obtain the gate voltage control function under different test luminous efficiencies, and obtain the gate voltage function relationship table.

2. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: The gate voltage control function and the luminous efficiency corresponding to the detection current are stored in pairs in the gate voltage function relationship table.

3. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: Obtaining the first display driving gate voltage according to the first display driving current and the first gate voltage regulation function in step S3 includes: Substitute the first display driving current into the first gate voltage regulation function to obtain a first display driving gate voltage; wherein the abscissa and ordinate of the first gate voltage regulation function are the driving current and the driving gate voltage, respectively.

4. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: When the first gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, the step S4 includes: Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first negative display driving gate voltage to the second electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

5. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: When the first gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are holes, the step S4 includes: Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first positive display driving gate voltage to the first electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

6. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: When the first gate control electrode is located on one side of the second electrode, the second electrode is connected to the negative electrode of the first power supply, and the majority carriers of the light-emitting device are holes, S4 includes: Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first negative display driving gate voltage to the second electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

7. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: When the first gate control electrode is located on one side of the first electrode, the first electrode is connected to the positive electrode of the first power supply, and the majority carriers of the light-emitting device are electrons, S4 includes: Control the first power supply to apply the first display driving current to the light-emitting device, and control the first gate control electrode to apply the first positive display driving gate voltage to the first electrode, so that the light-emitting brightness of the light-emitting device matches the current display grayscale value.

8. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: The light-emitting device is a quantum dot light-emitting diode, and the light-emitting functional layer includes a hole transport layer, a quantum dot light-emitting layer and an electron transport layer.

9. The gate-controlled stacked structure light emitting device brightness compensation driving method according to claim 1, characterized in that: The light-emitting device is an organic light-emitting diode, and the light-emitting functional layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer and an electron injection layer.

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