Display panel, display device and signal compensation method

Abstract

Provided are a display panel (00), a display device, and a signal compensation method, which belong to the technical field of display. The display panel (00) comprises a substrate (01) having a display area (A1) and a non-display area (B1), a pixel (02) located in the display area (A1), and a temperature sensing circuit (03) and a trimming circuit (04) located in the non-display area (B1). The temperature sensing circuit (03) can transmit a target temperature sensing current (I1) to a driving circuit (10) based on the temperature of the display area (A1), and the trimming circuit (04) can transmit a target trimming current (I2) to the driving circuit (10). The target temperature sensing current (I1) and the target trimming current (I2) can be used by the driving circuit (10) to compensate for a common power supply voltage, and the compensated common power supply voltage is transmitted to the pixel (02) to drive the pixel (02) to emit light, that is, the driving circuit (10) can flexibly adjust the common power supply voltage transmitted to the pixel (02) based on the temperature of the display area (A1). In this way, the influence of temperature on the luminance of the pixel (02) can be reduced, and the pixel (02) can also emit light normally when a large amount of heat is accumulated in the display area (A1), and the display effect of the display panel (00) is better.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display panel, display device, and signal compensation method. Background Technology

[0002] Silicon-based organic light-emitting diode (OLED) microdisplays are display products that integrate OLEDs with silicon-based circuits and are commonly used in the fields of virtual reality (VR) and augmented reality (AR).

[0003] Currently, silicon-based OLED microdisplays generally include: a silicon-based OLED microdisplay panel and a driving circuit. A silicon-based OLED microdisplay panel typically includes: a silicon substrate, and multiple pixel circuits and multiple OLEDs located on the silicon substrate. The driving circuit is coupled to the pixel circuits and is used to transmit driving signals to the pixel circuits. The pixel circuits are coupled to the OLEDs and are used to control the OLEDs to emit light based on the driving signals.

[0004] However, since both OLED and silicon-based displays generate heat, silicon-based OLED microdisplay panels tend to accumulate more heat when displaying at high brightness, affecting the OLED's luminous brightness and consequently resulting in a poorer display effect. Summary of the Invention

[0005] This disclosure provides a display panel, a display device, and a signal compensation method, which can solve the problem of poor display effect of the display panel due to temperature influence in related technologies. The technical solution is as follows:

[0006] On one hand, a display panel is provided, the display panel comprising:

[0007] A substrate having a display area and a non-display area at least partially surrounding the display area;

[0008] Multiple pixels are located in the display area, and the multiple pixels are used to be coupled to the driving circuit and to emit light based on the common power supply voltage transmitted by the driving circuit;

[0009] A temperature sensing circuit is located in the non-display area. The temperature sensing circuit is coupled to a first reference power supply terminal, a second reference power supply terminal, and a first power supply terminal, respectively, and is also used to be coupled to the driving circuit. The temperature sensing circuit is used to transmit a target temperature sensing current to the driving circuit based on the temperature of the display area under the drive of a first reference power supply signal provided by the first reference power supply terminal, a second reference power supply signal provided by the second reference power supply terminal, and a first power supply signal provided by the first power supply terminal.

[0010] The adjustment circuit is located in the non-display area. The adjustment circuit is coupled to the first reference power supply terminal, a plurality of adjustment control terminals and the first power supply terminal respectively, and is also used to be coupled to the driving circuit. The adjustment circuit is used to transmit the target adjustment current to the driving circuit under the drive of the adjustment control signal provided by at least one of the adjustment control terminals, the first reference power supply signal and the first power supply signal.

[0011] The target temperature sensing current and the target adjustment current are used by the drive circuit to compensate for the common power supply voltage.

[0012] Optionally, the temperature sensing circuit includes: multiple temperature sensing sub-circuits;

[0013] Each of the temperature sensing sub-circuits is coupled to the first reference power supply terminal, the second reference power supply terminal and the first power supply terminal respectively, and is used to be coupled to the driving circuit. Each of the temperature sensing sub-circuits is used to transmit a temperature sensing current that is positively correlated with the temperature to the driving circuit based on the temperature of the display area under the drive of the first reference power supply signal, the second reference power supply signal and the first power supply signal.

[0014] The target temperature sensing current is the sum of the temperature sensing currents transmitted by the plurality of temperature sensing sub-circuits.

[0015] Optionally, each of the temperature sensing sub-circuits includes: a first switching transistor and a second switching transistor;

[0016] The gate of the first switch is coupled to the first reference power supply terminal, the first terminal of the first switch is coupled to the first power supply terminal, and the second terminal of the first switch is coupled to the first terminal of the second switch.

[0017] The gate of the second switch is coupled to the second reference power supply terminal, and the second terminal of the second switch is used to be coupled to the driving circuit.

[0018] Optionally, the display area is rectangular, and the non-display area at least surrounds a first side and a second side of the display area that are opposite each other in a first direction;

[0019] Of the plurality of temperature sensing sub-circuits, a portion of the temperature sensing sub-circuits are located on the first side of the display area and are arranged sequentially along the second direction;

[0020] In addition to the aforementioned part of the temperature sensing sub-circuit, another part of the temperature sensing sub-circuit is located on the second side of the display area and is arranged sequentially along the second direction, where the first direction intersects the second direction.

[0021] Optionally, the number of some temperature sensing sub-circuits is the same as the number of others.

[0022] Furthermore, the temperature sensing sub-circuits are arranged at equal intervals, and / or the other part of the temperature sensing sub-circuits are arranged at equal intervals.

[0023] Optionally, the first direction is perpendicular to the second direction.

[0024] Optionally, the adjustment circuit includes: a plurality of adjustment sub-circuits;

[0025] Each of the trimming sub-circuits is coupled to the plurality of trimming control terminals, the first reference power supply terminal and the first power supply terminal respectively, and is used to be coupled to the driving circuit. Each of the trimming sub-circuits is used to transmit trimming current to the driving circuit under the drive of trimming control signal, the first reference power supply signal and the first power supply signal provided by at least one of the trimming control terminals.

[0026] The target adjustment current is the sum of the adjustment currents transmitted by the plurality of adjustment sub-circuits.

[0027] Optionally, the display area is rectangular, and the non-display area at least surrounds a first side, a second side, and a third side of the display area; the adjustment circuit includes two adjustment sub-circuits;

[0028] Of the two adjustment circuits, one adjustment circuit is located at the intersection of the third side and the first side of the display area, and the other adjustment circuit is located at the intersection of the third side and the second side of the display area.

[0029] Optionally, each of the trimming sub-circuits includes: a plurality of trimming units;

[0030] The plurality of trimming units are respectively coupled to the plurality of trimming control terminals one by one, and each trimming unit is also coupled to the first reference power supply terminal and the first power supply terminal respectively, and is used to be coupled to the driving circuit. Each trimming unit is used to transmit trimming sub-current to the driving circuit under the drive of the trimming control signal, the first reference power supply signal and the first power supply signal provided by the coupled trimming control terminal.

[0031] The adjustment current is the sum of the adjustment sub-currents transmitted by the plurality of adjustment units.

[0032] Optionally, each of the tuning units includes: a third switch and a fourth switch;

[0033] The gate of the third switch is coupled to the first reference power supply terminal, the first terminal of the third switch is coupled to the first power supply terminal, and the second terminal of the third switch is coupled to the first terminal of the fourth switch.

[0034] The gate of the fourth switch is coupled to the adjustment control terminal, and the second terminal of the fourth switch is used to couple to the drive circuit.

[0035] Optionally, each of the tuner circuits includes four tuner units.

[0036] Optionally, the temperature sensing circuit and the adjustment circuit are both coupled to the same output node, which is used to couple with the driving circuit.

[0037] Optionally, each pixel includes: a pixel circuit located in the display area and the non-display area, and a light-emitting element located in the display area;

[0038] The pixel circuit is coupled to the scanning control terminal, the data signal terminal, the first light emission control terminal, the second light emission control terminal, the second power supply terminal, the first power supply terminal, and the first electrode of the light emission element, respectively, and is used to transmit a light emission driving signal to the first electrode of the light emission element based on the scanning signal provided by the scanning control terminal, the first light emission control signal provided by the first light emission control terminal, the second light emission control signal provided by the second light emission control terminal, the second power supply signal provided by the second power supply terminal, and the first power supply signal.

[0039] The second electrode of the light-emitting element is coupled to a common power supply terminal, which is used to couple with the driving circuit and receive the common power supply voltage provided by the driving circuit. The light-emitting element is used to emit light based on the common power supply voltage and the light-emitting driving signal.

[0040] Optionally, the pixel circuit includes: a light-emitting control sub-circuit located in the non-display area, and a data writing sub-circuit, a storage circuit, and a driving sub-circuit located in the display area;

[0041] The light-emitting control sub-circuit is coupled to the first light-emitting control terminal, the second light-emitting control terminal, the first power supply terminal, the second power supply terminal, and the first node, respectively, and is used to control the on / off connection between the second power supply terminal and the first node in response to the first light-emitting control signal, and to control the on / off connection between the first power supply terminal and the first node in response to the second light-emitting control signal.

[0042] The data writing sub-circuit is coupled to the scan control terminal, the data signal terminal, and the second node respectively, and is used to control the connection and disconnection between the data signal terminal and the second node in response to the scan signal.

[0043] The storage sub-circuit is coupled to the second node and the first power supply terminal respectively, and is used to store the potential of the second node based on the first power supply signal;

[0044] The driving sub-circuit is coupled to the first node, the second node and the first pole of the light-emitting element respectively, and is used to transmit a light-emitting driving signal to the light-emitting element based on the potential of the first node and the potential of the second node.

[0045] Optionally, the light-emitting control sub-circuit includes: a first light-emitting control transistor and a second light-emitting control transistor; the data writing sub-circuit includes: a data writing transistor; the storage sub-circuit includes: a storage capacitor; and the driving sub-circuit includes: a driving transistor.

[0046] The gate of the first light-emitting control transistor is coupled to the first light-emitting control terminal, the first electrode of the first light-emitting control transistor is coupled to the second power supply terminal, and the second electrode of the first light-emitting control transistor is coupled to the first node.

[0047] The gate of the second light-emitting control transistor is coupled to the second light-emitting control terminal, the first terminal of the second light-emitting control transistor is coupled to the first power supply terminal, and the second terminal of the second light-emitting control transistor is coupled to the first node.

[0048] The gate of the data writing transistor is coupled to the scan control terminal, the first terminal of the data writing transistor is coupled to the data signal terminal, and the second terminal of the data writing transistor is coupled to the second node.

[0049] The first end of the storage capacitor is coupled to the second node, and the second end of the storage capacitor is coupled to the first power supply terminal.

[0050] The gate of the driving transistor is coupled to the second node, the first electrode of the driving transistor is coupled to the first node, and the second electrode of the driving transistor is coupled to the first electrode of the light-emitting element;

[0051] The first light-emitting control transistor, the second light-emitting control transistor, the data writing transistor, and the driving transistor are all N-type transistors.

[0052] Optionally, the multiple pixel arrays are arranged such that multiple pixels in the same row share one light emission control sub-circuit.

[0053] Optionally, the display panel is a silicon-based organic light-emitting diode (OLED) microdisplay panel.

[0054] On the other hand, a display device is provided, the display device comprising: a driving circuit, and a display panel as described above;

[0055] The driving circuit is coupled to a first reference power supply terminal, a second reference power supply terminal, a plurality of adjustment control terminals and a plurality of pixels in the display panel, and is used to provide a first reference power supply signal to the first reference power supply terminal, a second reference power supply signal to the second reference power supply terminal, adjustment control signals to the plurality of adjustment control terminals, and a common power supply voltage to the plurality of pixels.

[0056] Furthermore, the driving circuit is also coupled to the temperature sensing circuit and the adjustment circuit in the display panel, and is used to compensate the common power supply voltage based on the target temperature sensing current transmitted by the temperature sensing circuit and the target adjustment current transmitted by the adjustment circuit.

[0057] In another aspect, a signal compensation method is provided, applied to a driving circuit included in a display device as described above, the method comprising:

[0058] A first reference power signal with a first potential is provided to a first reference power terminal, a second reference power signal with a first potential is provided to a second reference power terminal, a first potential adjustment control signal is provided to at least one of a plurality of adjustment control terminals, and a second potential adjustment control signal is provided to the remaining adjustment control terminals other than the at least one adjustment control terminal.

[0059] The target temperature sensing current transmitted by the temperature sensing circuit is generated by the temperature sensing circuit based on the temperature of the display area in the display panel under the drive of the first reference power signal at the first potential, the second reference power signal at the first potential and the first power signal provided by the coupled first power terminal.

[0060] The target adjustment current transmitted by the adjustment circuit is received. The target adjustment current is generated by the adjustment circuit under the drive of the first reference power supply signal at the first potential, the adjustment control signal at the first potential, and the first power supply signal provided by the coupled first power supply terminal.

[0061] The common power supply voltage is compensated based on the target temperature sensing current and the target adjustment current, and the compensated common power supply voltage is transmitted to multiple pixels to drive the multiple pixels to emit light.

[0062] Optionally, the compensation of the common power supply voltage based on the target temperature sensing current and the target adjustment current includes:

[0063] Determine the compensation current after summing the target temperature sensing current and the target adjustment current;

[0064] Convert the compensation current into a compensation voltage;

[0065] The compensated voltage is added to the original common power supply voltage to obtain the compensated common power supply voltage.

[0066] In summary, the beneficial effects of the technical solutions provided by the embodiments of this disclosure can at least include:

[0067] A display panel, display device, and signal compensation method are provided. The display panel includes: a substrate having a display area and a non-display area, pixels located in the display area, and a temperature sensing circuit and a trimming circuit located in the non-display area. The temperature sensing circuit can transmit a target temperature sensing current to a driving circuit based on the temperature of the display area, and the trimming circuit can transmit a target trimming current to the driving circuit. The target temperature sensing current and the target trimming current can be used by the driving circuit to compensate for a common power supply voltage, and the compensated common power supply voltage is transmitted to the pixels to drive the pixels to emit light. This allows the driving circuit to flexibly adjust the common power supply voltage transmitted to the pixels based on the temperature of the display area. Thus, the influence of temperature on pixel brightness can be reduced, ensuring that the pixels can emit light normally even when a lot of heat accumulates in the display area. The display panel provided by this disclosure has good display performance. Attached Figure Description

[0068] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0069] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this disclosure;

[0070] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this disclosure;

[0071] Figure 3 This is a schematic diagram of the structure of another display panel provided in this embodiment;

[0072] Figure 4 This is a schematic diagram of the structure of a tuner circuit provided in an embodiment of this disclosure;

[0073] Figure 5 This is a circuit diagram of a temperature sensing sub-circuit and a tuning sub-circuit provided in an embodiment of this disclosure;

[0074] Figure 6This is a schematic diagram of a pixel structure provided in an embodiment of this disclosure;

[0075] Figure 7 This is a schematic diagram of another pixel structure provided in an embodiment of this disclosure;

[0076] Figure 8 This is a schematic diagram of another pixel structure provided in an embodiment of this disclosure;

[0077] Figure 9 This is a timing diagram of the signal terminals coupled to a pixel according to an embodiment of the present disclosure;

[0078] Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure;

[0079] Figure 11 This is a schematic diagram of the structure of a driving circuit provided in an embodiment of this disclosure;

[0080] Figure 12 This is a flowchart of a signal compensation method provided in an embodiment of this disclosure;

[0081] Figure 13 This is a flowchart of a method for compensating the voltage of a common power supply provided in an embodiment of this disclosure.

[0082] Explanation of reference numerals in the attached figures:

[0083] 00 - Display panel, 10 - Drive circuit;

[0084] 01-Substrate, 02-Pixel, 03-Temperature sensing circuit, 04-Adjustment circuit;

[0085] 031-Temperature sensing sub-circuit, 041-Adjustment sub-circuit, 0411-Adjustment unit, P1-Pixel circuit, L1-Light-emitting element, P11-Light-emitting control sub-circuit, P12-Data writing sub-circuit, P13-Storage sub-circuit, P14-Drive sub-circuit.

[0086] A1 - Display area, B1 - Non-display area, a11 - First side, a12 - Second side, a13 - Third side, X1 - First direction, X2 - Second direction;

[0087] K1 - First switching transistor, K2 - Second switching transistor, K3 - Third switching transistor, K4 - Fourth switching transistor, T1 - First light-emitting control transistor, T2 - Second light-emitting control transistor, T3 - Data writing transistor, T4 - Drive transistor, C1 - Storage capacitor;

[0088] Vref1 - First reference power supply terminal, Vref2 - Second reference power supply terminal, Gnd - First power supply terminal, Elvdd - Second power supply terminal, Trim1...Trimn - Trim control terminal, Scan - Scan control terminal, Data - Data signal terminal, EM1 - First light emission control terminal, EMN2 - Second light emission control terminal, Vcom - Common power supply terminal;

[0089] N0 - Target node, N1 - First node, N2 - Second node.

[0090] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0091] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the implementation methods of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0092] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this disclosure. Figure 1 As shown, the display panel includes: a substrate 01 having a display area A1 and a non-display area B1 that at least partially surrounds the display area A1.

[0093] For example, refer to Figure 1 In the substrate 01 shown, the display area A1 is rectangular, and the non-display area B1 is located to the left of the display area A1, adjacent to (i.e., adjacent and in contact with) the display area A1, and partially surrounds the display area A1. Of course, the display area A1 is not limited to being rectangular; in some other embodiments, the display area A1 can be circular. Furthermore, the non-display area B1 is not limited to being located to the left of the display area A1; in some other embodiments, it can be combined with… Figure 1 The non-display area B1 can be located to the right of the display area A1, or it can be located on all sides of the display area A1 and surround the display area A1.

[0094] It should be noted that the area of ​​display area A1 is generally much larger than the area of ​​non-display area B1. The attached diagram is only for illustrative purposes and does not limit the area of ​​display area A1 and non-display area B1.

[0095] Continue to refer to Figure 1 As can be seen, the display panel described in this embodiment further includes: a plurality of pixels 02 located in the display area A1, and a temperature sensing circuit 03 and a trimming circuit 04 located in the non-display area B1.

[0096] Multiple pixels 02 are coupled to a driving circuit (not shown in the figure) and emit light based on a common power supply voltage transmitted by the driving circuit. The driving circuit can also be called a driver integrated circuit (Driver IC). The driving circuit is generally located on the periphery of the display panel (i.e., not on the substrate 01) and is bonded to the structure on the display panel that needs to be coupled. Accordingly, the driving circuit can be considered to be located in the bonding area. Furthermore, the coupling described in the embodiments of this disclosure can refer to "electrical connection".

[0097] The temperature sensing circuit 03 is coupled to the first reference power supply terminal Vref1, the second reference power supply terminal Vref2, and the first power supply terminal Gnd, respectively, and is also used to couple to the driving circuit (not shown in the figure). Driven by the first reference power signal provided by the first reference power supply terminal Vref1, the second reference power signal provided by the second reference power supply terminal Vref2, and the first power signal provided by the first power supply terminal Gnd, the temperature sensing circuit 03 transmits a target temperature sensing current to the driving circuit based on the temperature of the display area A1.

[0098] Optionally, in this embodiment of the disclosure, the temperature sensing circuit 03 may include a switching transistor (also referred to as a switching transistor), the output characteristics of which can change with the temperature of the display area A1. Thus, driven by the first reference power signal, the second reference power signal, and the first power signal, the temperature sensing circuit 03 can transmit a target temperature sensing current I1, which is positively correlated with the temperature of the display area A1, to the driving circuit, thereby achieving temperature sensing of the display area A1. That is, the higher the temperature, the larger the target temperature sensing current I1; conversely, the lower the temperature, the smaller the target temperature sensing current I1.

[0099] The temperature of the display area A1 can include the temperature of the substrate 01 and the temperatures of the multiple pixels 02 located in the display area A1, and this temperature is affected by the ambient temperature. Generally, the higher the ambient temperature, the higher the temperature of the substrate 01, the higher the temperature of the multiple pixels 02, and the brighter the light emission of the multiple pixels 02. The brighter the light emission, the higher the temperature of the multiple pixels 02 will be.

[0100] Optionally, in this embodiment of the disclosure, the potential of the first reference power signal and the potential of the second reference power signal can both be the first potential, and the potential of the first reference power signal can be less than the potential of the second reference power signal. For example, the potential of the first reference power signal can be approximately 1.5 volts (V), and the potential of the second reference power signal can be approximately 2.5V. The potential of the first power signal can be the second potential, and the second potential can be less than the first potential. For example, when the first power terminal is ground (Gnd), the potential of the first power signal can be 0. Of course, in some other embodiments, the potential of the first power signal can also be less than 0, in which case the first power terminal can be a pull-down power terminal (VSS).

[0101] The trimming circuit 04 is coupled to the first reference power supply terminal Vref1, multiple trimming control terminals Trim1…Trimn, and the first power supply terminal Gnd, and is also used to couple to the drive circuit. The trimming circuit 04 is used to transmit the target trimming current to the drive circuit under the drive of a trimming control signal provided by at least one trimming control terminal, a first reference power supply signal, and a first power supply signal. Here, n can be an integer greater than 1.

[0102] For example, when the potential of at least one adjustment control signal provided by at least one adjustment control terminal is a first potential, the adjustment circuit 04 can transmit a target adjustment current I2 to the drive circuit based on the at least one adjustment control signal, the first reference power supply signal, and the first power supply signal. The target adjustment current I2 can be used to correct the target temperature sensing current I1, so that the current finally transmitted to the drive circuit can more accurately reflect the temperature of the display area A1 in the display panel.

[0103] Optionally, in the plurality of trimming control terminals Trim1…Trimn described in this embodiment, the potential of the trimming control signal provided by each trimming control terminal can all be a first potential. Alternatively, the potential of the trimming control signal provided by some trimming control terminals is the first potential, and the potential of the trimming control signal provided by other trimming control terminals is the second potential. Moreover, the more trimming control signals with the first potential, the larger the target trimming current I2 transmitted by the trimming circuit 04; conversely, the fewer trimming control signals with the first potential, the smaller the target trimming current I2 transmitted by the trimming circuit 04. Based on this, the correction accuracy of the target temperature sensing current I1 can be improved by flexibly controlling the trimming control signals provided by each trimming control terminal.

[0104] Optionally, in this embodiment of the disclosure, the first potential of the adjustment control signal can be approximately 2.5V, and the second potential of the adjustment control signal can be 0V. For the temperature sensing circuit 03 and the adjustment circuit 04, the first potential can be an effective potential, and the second potential can be an ineffective potential.

[0105] The target temperature sensing current I1 and the target adjustment current I2 can be used to compensate the common power supply voltage for the drive circuit. For example, the drive circuit can accumulate the target temperature sensing current I1 and the target adjustment current I2 to obtain the compensation current I. PTAT The compensation current I PTAT The voltage is converted to a compensation voltage ΔV, and the common power supply voltage to be compensated is then compensated based on this compensation voltage ΔV (e.g., the two are summed). Pixel 02 exhibits good luminous brightness and good luminous brightness stability when driven by the compensated common power supply voltage.

[0106] Of course, in some other embodiments, the compensation current I can also be converted by a voltage conversion circuit independent of the driving circuit. PTAT After being converted to a compensation voltage ΔV, the voltage is transmitted to the driving circuit, which does not need to perform a current-to-voltage conversion operation. Furthermore, the first reference power supply terminal Vref1, the second reference power supply terminal Vref2, and the adjustment control terminal described in the above embodiments can also be coupled to the driving circuit, meaning the driving circuit provides the required signals to each signal terminal. Specifically, in this embodiment, the adjustment circuit 04, in conjunction with the temperature sensing circuit 03, can transmit a current or voltage proportional to the absolute temperature of the display area A1 back to the driving circuit under the drive of the signals provided by the driving circuit. The driving circuit then uses a compensation algorithm to compensate the common power supply voltage, ensuring good stability of the luminous brightness of pixel 02.

[0107] It should be noted that a display panel is typically cut from a large substrate comprising multiple display panels, which can be considered as a batch of display panels. Due to the influence of cutting and manufacturing processes, the final cut display panels will have differences, such as different aspect ratios of the transistors included in the temperature sensing circuit 03 or the transistors included in the pixel 02. Consequently, the target temperature sensing current I1 output by the temperature sensing circuit 03 based on the same sensed temperature may differ in different display panels. Based on this, during the testing phase before the display panel leaves the factory, the target common power supply voltage that can normally illuminate the pixel 02 at different temperatures can be referenced to set the adjustment control signals provided to multiple adjustment control terminals and store them in the driving circuit. After leaving the factory, the driving circuit can directly call the stored adjustment control signals to provide the corresponding adjustment control signals to each adjustment control terminal, thereby making the compensated common power supply voltage as close as possible (e.g., equal to) the target common power supply voltage, ensuring good uniformity of luminous brightness of display panels in the same batch at the same temperature, i.e., similar or consistent display effects.

[0108] In summary, this disclosure provides a display panel comprising: a substrate having a display area and a non-display area; pixels located in the display area; and a temperature sensing circuit and a trimming circuit located in the non-display area. The temperature sensing circuit transmits a target temperature sensing current to a driving circuit based on the temperature of the display area, and the trimming circuit transmits a target trimming current to the driving circuit. This target temperature sensing current and target trimming current allow the driving circuit to compensate for the common power supply voltage and transmit the compensated common power supply voltage to the pixels to drive them to emit light. This allows the driving circuit to flexibly adjust the common power supply voltage transmitted to the pixels based on the temperature of the display area. Thus, the impact of temperature on pixel brightness can be reduced, ensuring that the pixels can emit light normally even when a large amount of heat accumulates in the display area. The display panel provided by this disclosure provides good display performance.

[0109] Optionally, the display panel described in this embodiment can be a silicon-based organic light-emitting diode (OLED) microdisplay panel. That is, the substrate 01 can be a silicon-based substrate, and the pixel 02 can include an OLED light-emitting device. For a silicon-based organic light-emitting diode (OLED) microdisplay panel, one display panel can be considered as one chip, and the setting of the trimming circuit 04 can reduce the differences between chips (i.e., inter-chip differences).

[0110] Optionally, the size of a silicon-based organic light-emitting diode (OLED) microdisplay panel can typically be around 1 inch. Because silicon-based OLED microdisplay panels integrate the advantages of both silicon-based materials and OLED light-emitting materials, they can achieve ultra-high pixel density (pixels per inch, PPI). They are commonly used in virtual reality (VR) and / or augmented reality (AR) fields. For example, they can be used in camera viewfinders or aiming scopes in VR applications.

[0111] Optional, Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this disclosure. (See reference) Figure 2 It can be seen that the temperature sensing circuit 03 may include multiple temperature sensing sub-circuits 031. Figure 2 A schematic diagram of a temperature sensing sub-circuit 031 is also shown.

[0112] Combination Figure 1 and Figure 2As can be seen, among the multiple temperature sensing sub-circuits 031 included in the temperature sensing circuit 03, each temperature sensing sub-circuit 031 can be coupled to the first reference power supply terminal Vref1, the second reference power supply terminal Vref2, and the first power supply terminal Gnd, respectively, and can also be used to couple with the driving circuit. Based on this, each temperature sensing sub-circuit 031 can transmit a temperature sensing current to the driving circuit based on the temperature of the display area A1, driven by the first reference power supply signal, the second reference power supply signal, and the first power supply signal. This temperature sensing current can also be positively correlated with the temperature.

[0113] Furthermore, in this embodiment, the target temperature sensing current I1 transmitted by the temperature sensing circuit 03 to the driving circuit can be the sum of the temperature sensing currents I01 transmitted by multiple temperature sensing sub-circuits 031. That is, I1 = number of temperature sensing sub-circuits 031 * I01. For example, assuming the display panel includes such... Figure 2 The 30 temperature sensing sub-circuits 031 shown have a target temperature sensing current I1 = 30 * I01.

[0114] By setting multiple temperature sensing sub-circuits 031, reliable temperature acquisition at different locations in the display area A1 can be achieved, thereby ensuring that the target temperature sensing current I1 output to the drive circuit can accurately reflect the temperature at each location in the display area A1.

[0115] Optional, continue to refer to Figure 2 It can be seen that the display area A1 of the substrate 01 can be rectangular, and the non-display area B1 can at least surround the first side a11 and the second side a12 of the display area A1 in the first direction X1. Based on this, among the multiple temperature sensing sub-circuits 031, a portion of the temperature sensing sub-circuits 031 can be located on the first side a11 of the display area A1 and can be arranged sequentially along the second direction X2. The remaining portion of the temperature sensing sub-circuits 031 can be located on the second side a12 of the display area A1 and can be arranged sequentially along the second direction X2.

[0116] Wherein, the first direction X1 and the second direction X2 can intersect, such as, Figure 2 The first direction X1 and the second direction X2 shown can be perpendicular to each other. Assuming multiple pixels 02 are arranged in a row and column array, then... Figure 2 The first direction X1 shown can refer to the column direction, and the second direction X2 can refer to the row direction. The first side a11 can be considered as the left side of the display area A1, and the second side a12 can be considered as the right side of the display area A1.

[0117] Furthermore, combined Figure 2It can be seen that the number of temperature sensing sub-circuits 031 located on the first side a11 can be the same as the number of temperature sensing sub-circuits 031 located on the second side a12. Furthermore, the temperature sensing sub-circuits 031 are arranged at equal intervals, and / or the other part of the temperature sensing sub-circuits 031 are arranged at equal intervals. Here, "equal intervals" can mean that the distance between any two adjacent temperature sensing sub-circuits 031 is a fixed distance, such as approximately 1 micrometer (μm).

[0118] With the same number of temperature sensing sub-circuits 031 in some areas and another area, and with both areas equally spaced, the multiple temperature sensing sub-circuits 031 in the display panel can be considered as being evenly distributed around the perimeter of the display area A1. This ensures effective and uniform temperature sensing at all locations within the display area A1, allowing the target temperature sensing current I1 output by the temperature sensing circuit 03 to the drive circuit to more accurately characterize the temperature at each location within the display area A1, such as ensuring that the temperature reflected by the target temperature sensing current I1 is equal to the average temperature of the display area A1. Furthermore, this ensures reliable compensation of the common power supply voltage by the drive circuit, further improving the display effect of the display panel.

[0119] Example, Figure 2 The temperature sensing circuit 03 shown includes 30 temperature sensing sub-circuits 031 located in the non-display area B1. Of these, 15 temperature sensing sub-circuits 031 are located on the first side a11 of the display area A1 and are evenly distributed at equal intervals. Another 15 temperature sensing sub-circuits 031 are located on the second side a12 of the display area A1 and are also evenly distributed at equal intervals.

[0120] Optional, Figure 3 This is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure. For example... Figure 3 As shown, the adjustment circuit 04 may include: multiple adjustment sub-circuits 041 ( Figure 3 Two tuner circuits (041) are shown in total. Figure 3 A schematic diagram of a tuner circuit 041 is also shown.

[0121] Among them, combined Figure 1 and Figure 3 It can be seen that each trimming sub-circuit 041 included in the trimming circuit 04 can be coupled to multiple trimming control terminals Trim1...Trimn, the first reference power supply terminal Vref1, and the first power supply terminal Gnd, respectively, and can all be used to couple to the drive circuit. Based on this, each trimming sub-circuit 041 can be used to transmit trimming current to the drive circuit under the drive of a trimming control signal, a first reference power supply signal, and a first power supply signal provided by at least one trimming control terminal.

[0122] Furthermore, in this embodiment, the target adjustment current I2 transmitted by the adjustment circuit 04 to the driving circuit can be the sum of the adjustment currents I02 transmitted by the multiple adjustment sub-circuits 041. That is, I2 = number of adjustment sub-circuits 041 * I02. For example, assuming the display panel includes... Figure 3 The two adjustment units 0411 shown indicate that the target adjustment current I2 = 2 * I02. By setting multiple adjustment sub-circuits 041, the accuracy of the correction of the target temperature sensing current I1 can be improved, thereby further improving the reliable compensation of the common power supply voltage.

[0123] Optional, combined Figure 2 and Figure 3 It can be seen that the non-display area B1 of the substrate 01 can at least surround the first side a11, the second side a12, and the third side a13 of the display area A1. Here, the third side a13 can be... Figure 3 The lower side of the display area A1 shown. In Figure 2 Based on the multiple temperature sensing sub-circuits 031 included, the adjustment circuit 04 may include: Figure 3 The two tuning circuits 041 are shown.

[0124] Of the two adjustment circuits 041, one adjustment circuit 041 can be located at the intersection of the third side a13 and the first side a11 of the display area A1, and the other adjustment circuit 041 can be located at the intersection of the third side a13 and the second side a12 of the display area A1. In this way, not only can the temperature sensing current output by each temperature sensing sub-circuit 031 located on the first side a11 be corrected, but the temperature sensing current output by each temperature sensing sub-circuit 031 located on the second side a12 can also be corrected, thereby ensuring a better correction effect.

[0125] Figure 4 This is a schematic diagram of the structure of a tuner circuit 041 provided in an embodiment of this disclosure. (Reference) Figure 4 It can be seen that each tuning circuit 041 may include multiple tuning units 0411.

[0126] Each trimming unit 0411 can be coupled to a corresponding trimming control terminal Trim1...Trimn, and each trimming unit 0411 can also be coupled to a first reference power supply terminal Vref1 and a first power supply terminal Gnd, and can be used to couple to a drive circuit. Each trimming unit 0411 can transmit a trimming sub-current to the drive circuit under the drive of a trimming control signal, a first reference power supply signal, and a first power supply signal provided by a coupled trimming control terminal.

[0127] Example, Figure 4Each trimming circuit 041 shown includes four trimming units 0411, corresponding to four trimming control terminals Trim1, Trim2, Trim3, and Trim4. The four trimming units 0411 are coupled one-to-one with the four trimming control terminals Trim1, Trim2, Trim3, and Trim4. Taking the trimming unit 0411 coupled to the trimming control terminal Trim1 as an example, this trimming unit 0411 can transmit a trimming current I03 to the drive circuit based on the trimming control signal at the first potential, the first reference power supply signal, and the first power supply signal when the potential of the trimming control signal provided by the trimming control terminal Trim1 is a first potential; and it can stop working when the potential of the trimming control signal provided by the trimming control terminal Trim1 is a second potential, which can be considered as the trimming current I03 output by the trimming unit 0411 being 0 at this time.

[0128] Furthermore, in this embodiment, the adjustment current I02 transmitted from the adjustment circuit 041 to the driving circuit can be the sum of the adjustment currents I03 transmitted by multiple adjustment units 0411. That is, I02 = number of adjustment units 0411 * I03. For example, assuming the display panel includes... Figure 4 The four trimming units 0411 shown above generate a trimming current I02 = 4 * I03 = I03 + I03 + I03 + I03.

[0129] Based on the above embodiments, it can be seen that, with four trimming units 0411 (i.e., four trimming control terminals Trim1, Trim2, Trim3, and Trim4), there are a total of 15 trimming modes. Taking an example where the first potential of the trimming control signal is 2.5V, the second potential is 0V, and the potentials of the first reference power supply signal and the second reference power supply signal are 1.5V and 2.5V respectively, Table 1 below shows the compensation current I determined by the drive circuit under the 15 trimming modes during testing. PTAT The value is expressed in microamperes (μA).

[0130] Table 1

[0131] Vref1 / V Trim1 / V Trim2 / V Trim3 / V Trim4 / V Vref2 / V <![CDATA[I PTAT / μA]]> 1.5 0 0 0 2.5 2.5 165.3242 1.5 0 0 0 2.5 2.5 253.494 1.5 0 0 2.5 0 2.5 209.4094 1.5 0 0 2.5 2.5 2.5 297.578 1.5 0 2.5 0 0 2.5 187.3669 1.5 0 2.5 0 2.5 2.5 275.5361 1.5 0 2.5 2.5 0 2.5 231.4518 1.5 0 2.5 2.5 2.5 2.5 319.6197 1.5 2.5 0 0 0 2.5 176.3455 1.5 2.5 0 0 2.5 2.5 264.5151 1.5 2.5 0 2.5 0 2.5 220.4306 1.5 2.5 0 2.5 2.5 2.5 308.5989 1.5 2.5 2.5 0 0 2.5 198.3881 1.5 2.5 2.5 0 2.5 2.5 286.5571 1.5 2.5 2.5 2.5 0 2.5 242.4729 1.5 2.5 2.5 2.5 2.5 2.5 330.6405

[0132] As can be seen from Table 1 above, the potentials of the trimming control signals provided by trimming control terminals Trim1, Trim2, and Trim3 are all the second potential, while the potential of the trimming control signal provided by Trim4 is the first potential. Based on this, the compensation current I... PTAT It is 165.3242 μA. Furthermore, as can be seen from Table 1 above, the more adjustment control signals there are for the first potential, the higher the compensation current I...PTAT The larger.

[0133] It should be noted that, as can be seen from the above embodiments, the specific adjustment method adopted, i.e., which mode in Table 1 is satisfied by the potential of the adjustment control signal provided by each adjustment control terminal, can be determined and stored in the drive circuit during the pre-shipment testing stage to reduce inter-chip differences.

[0134] Of course, in some other embodiments, Table 1 above can also be stored in the driving circuit in the form of a table or curve, and the target common power supply voltage for normal illumination of the driving pixel 02 can also be stored in the driving circuit. Then, the driving circuit determines the required compensation current I based on the common power supply voltage before compensation and the target common power supply voltage. PTAT And based on the determined compensation current I PTAT Find the potential of the adjustment control signal provided by each adjustment control terminal from Table 1 above, and then transmit the found adjustment control signal to the adjustment control terminal to realize the control of the adjustment control terminal.

[0135] by Figures 2 to 4 Taking any of the structures shown as an example, Figure 5 A schematic diagram of a portion of the circuitry in a display panel is shown. (Reference) Figure 5 It can be seen that each temperature sensing sub-circuit 031 may include: a first switch K1 and a second switch K2. Each tuning unit 0411 may include: a third switch K3 and a fourth switch K4. Figure 5 Only one temperature sensing sub-circuit 031 located on the first side a11 and one temperature sensing sub-circuit 031 located on the second side a12 are shown to represent all temperature sensing sub-circuits 031.

[0136] The gate of the first switch K1 can be coupled to the first reference power supply terminal Vref1, the first terminal of the first switch K1 can be coupled to the first power supply terminal Gnd, and the second terminal of the first switch K1 can be coupled to the first terminal of the second switch K2.

[0137] The gate of the second switch K2 can be coupled to the second reference power supply terminal Vref2, and the second terminal of the second switch K2 can be used to couple to the drive circuit.

[0138] As can be seen from the above embodiments, when the temperature of the display area A1 changes, the output performance of the first switch K1 and the second switch K2 changes accordingly, and the output temperature sensing current I01 changes accordingly. Generally, the temperature sensing current I01 is absolutely positively correlated with the temperature. In this way, the purpose of reliably sensing the temperature of the display area A1 can be achieved.

[0139] The gate of the third switch K3 can be coupled to the first reference power supply terminal Vref1, the first terminal of the third switch K3 can be coupled to the first power supply terminal Gnd, and the second terminal of the third switch K3 can be coupled to the first terminal of the fourth switch K4.

[0140] The gate of the fourth switch K4 can be coupled to the adjustment control terminal, and the second terminal of the fourth switch K4 can be coupled to the drive circuit. For example, Figure 5 In the middle, in the two trimming circuits 041 on the left and right, the gates of the four fourth switching transistors K4 included in each trimming circuit 041 are respectively coupled to the trimming control terminals Trim1, Trim2, Trim3 and Trim4.

[0141] Optional, combined Figure 5 It can also be seen that, in this embodiment of the present disclosure, the temperature sensing circuit 03 and the adjustment circuit 04 can be coupled to the same output node N0, and the output node N0 can be further used to couple with the driving circuit. That is, the temperature sensing circuit 03 and the adjustment circuit 04 can be coupled to the driving circuit through the same output node N0. Accordingly, the current at the output node N0 is: the compensation current I after accumulating the target temperature sensing current I1 and the target adjustment current I2. PTAT Therefore, it can be determined that the current transmitted to the drive circuit is the compensation current I. PTAT The drive circuit no longer needs to perform the accumulation operation described in the above embodiments; it can directly convert the compensation current I. PTAT The voltage is converted to a compensation voltage ΔV, and the common power supply voltage is compensated based on this compensation voltage ΔV. In this way, not only is the operation of the drive circuit simplified and the power consumption of the drive circuit reduced, but it also only requires one pin (which can also be called a pin) on the drive circuit.

[0142] Of course, in some other embodiments, the temperature sensing circuit 03 and the adjustment circuit 04 can be coupled to the driving circuit separately. Accordingly, the driving circuit can perform the operation of accumulating the target temperature sensing current I1 and the target adjustment current I2 to obtain the required compensation current I. PTAT .

[0143] Furthermore, in conjunction with the above embodiments and Figure 5 It can be seen that the first switch K1 and the second switch K2 included in each temperature sensing sub-circuit 031 can be considered to be connected in series between the target node N0 and the first power supply terminal Gnd. Similarly, the third switch K3 and the fourth switch K4 included in each trimming unit 0411 can also be considered to be connected in series between the target node N0 and the first power supply terminal Gnd.

[0144] Optionally, in this embodiment of the disclosure, the switching transistors included in the temperature sensing sub-circuit 031 and the switching transistors included in the adjustment unit 0411 are, i.e. Figure 5 The first switch K1, the second switch K2, the third switch K3, and the fourth switch K4 shown can all be N-type transistors. Accordingly, for each switch, the effective potential can be higher than the inactive potential. Alternatively, each switch can also be a metal-oxide-semiconductor (MOS) transistor. Therefore, each switch can be fabricated using NMOS technology.

[0145] By setting both the switching transistors in the temperature sensing sub-circuit 031 and the switching transistors in the trimming unit 0411 to be NMOS transistors, their gates can be driven and biased using the constant voltage described in the above embodiment. Utilizing their operating saturation region, a compensation current I proportional to the absolute temperature is output. PTAT The compensation current I PTAT The feedback signal to the drive circuit allows for real-time monitoring of the temperature in display area A1, enabling the compensation of the common power supply voltage based on the temperature of display area A1. Furthermore, using only NMOS transistors in the non-display area B1 facilitates circuit layout and improves temperature detection in display area A1.

[0146] Of course, in some other embodiments, the various switching transistors included in the temperature sensing sub-circuit 031 and / or the various switching transistors included in the tuning unit 0411 may all be PMOS transistors, or a combination of PMOS transistors and NMOS transistors.

[0147] Figure 6 This is a schematic diagram of a pixel structure provided in an embodiment of this disclosure. For example... Figure 6 As shown, each pixel 02 may include: a pixel circuit P1 located in the display area A1 and the non-display area B1, and a light-emitting element L1 located in the display area A1. Figure 6 The display area A1 and the non-display area B1 are not divided.

[0148] The pixel circuit P1 can be coupled to the scan control terminal Scan, the data signal terminal Data, the first light emission control terminal EM1, the second light emission control terminal EM2, the second power supply terminal Elvdd, the first power supply terminal Gnd, and the first electrode of the light-emitting element L1. The pixel circuit P1 can be used to transmit a light emission driving signal (e.g., driving current) to the first electrode of the light-emitting element L1 based on the scan signal provided by the scan control terminal Scan, the first light emission control signal provided by the first light emission control terminal EM1, the second light emission control signal provided by the second light emission control terminal EM2, the second power supply signal provided by the second power supply terminal Elvdd, and the first power supply signal.

[0149] The second terminal of the light-emitting element L1 can be coupled to a common power supply terminal Vcom. Vcom can be used to couple with the driving circuit and receive the common power supply voltage provided by the driving circuit. The light-emitting element L1 can emit light based on the common power supply voltage and the light-emitting driving signal. For example, the light-emitting element L1 can emit light under the voltage difference between the common power supply voltage and the light-emitting driving signal. The common power supply voltage provided by the driving circuit can be a compensated common power supply voltage.

[0150] For example, assuming the potential of the light-emitting drive signal transmitted from pixel circuit P1 to the first electrode of light-emitting element L1 is Vdata, the compensation voltage is ΔV, and the common power supply voltage to be compensated is Vcom1, the compensation for the common power supply voltage can be achieved by summing the common power supply voltage to be compensated (Vcom1) and the compensation voltage ΔV. Then, the voltage difference between the first and second electrodes of light-emitting element L1, Voled = Vdata - (Vcom1 + ΔV), is calculated. Tests show that under this voltage difference, the light emission brightness stability of light-emitting element L1 is good.

[0151] Optional, combined Figure 6 The first electrode of the light-emitting element L1 can be an anode, and the second electrode of the light-emitting element L1 can be a cathode. Of course, in some other embodiments, the first electrode of the light-emitting element L1 can also be a cathode, and the second electrode of the light-emitting element L1 can be an anode.

[0152] Figure 7 This is a schematic diagram of another pixel structure provided in an embodiment of this disclosure. For example... Figure 7 As shown, the pixel circuit P1 may include: a light emission control sub-circuit P11 located in the non-display area B1, and a data writing sub-circuit P12, a storage circuit P13, and a driving sub-circuit P14 located in the display area A1.

[0153] The light-emitting control sub-circuit P11 can be coupled to the first light-emitting control terminal EM1, the second light-emitting control terminal EM2, the first power supply terminal Gnd, the second power supply terminal Elvdd, and the first node N1, respectively. The light-emitting control sub-circuit P11 can be used to control the on / off state between the second power supply terminal Elvdd and the first node N1 in response to the first light-emitting control signal, and to control the on / off state between the first power supply terminal Gnd and the first node N1 in response to the second light-emitting control signal.

[0154] For example, the light-emitting control sub-circuit P11 can control the second power supply terminal Elvdd to conduct with the first node N1 when the potential of the first light-emitting control signal is the first potential. At this time, the second power supply terminal Elvdd can transmit a second power signal at the first potential to the first node N1 to charge the first node N1. Conversely, the light-emitting control sub-circuit P11 can control the second power supply terminal Elvdd to discouple from the first node N1 when the potential of the first light-emitting control signal is the second potential. At this time, the second power supply terminal Elvdd cannot transmit a second power signal at the first potential to the first node N1.

[0155] Similarly, the light-emitting control sub-circuit P11 can control the first power supply terminal Gnd to conduct with the first node N1 when the potential of the second light-emitting control signal is the first potential. At this time, the first power supply terminal Gnd can transmit the first power supply signal at the second potential to the first node N1 to discharge the first node N1. Conversely, the light-emitting control sub-circuit P11 can also control the first power supply terminal Gnd to discouple from the first node N1 when the potential of the second light-emitting control signal is the second potential. At this time, the first power supply terminal Gnd cannot transmit the first power supply signal at the second potential to the first node N1.

[0156] It should be noted that for each sub-circuit in the pixel circuit P1, the first potential can be an effective potential, and the second potential can be an ineffective potential.

[0157] The data writing sub-circuit P12 can be coupled to the scan control terminal Scan, the data signal terminal Data, and the second node N2, respectively. The data writing sub-circuit P12 can be used to control the on / off state between the data signal terminal Data and the second node N2 in response to the scan signal.

[0158] For example, the data writing sub-circuit P12 can control the data signal terminal Data to conduct with the second node N2 when the scan signal potential is the first potential. At this time, the data signal terminal Data can transmit data signals to the second node N2 to charge it. Conversely, the data writing sub-circuit P12 can control the data signal terminal Data to discouple from the second node N2 when the scan signal potential is the second potential. At this time, the data signal terminal Data cannot transmit data signals to the second node N2.

[0159] The storage sub-circuit P13 can be coupled to the second node N2 and the first power supply terminal Gnd, respectively. The storage sub-circuit P13 can be used to store the potential of the second node N2 based on the first power supply signal.

[0160] The driving sub-circuit P14 can be coupled to the first node N1, the second node N2 and the first pole of the light-emitting element L1 respectively, and can be used to transmit a light-emitting driving signal to the first pole of the light-emitting element L1 based on the potential of the first node N1 and the potential of the second node N2, so as to drive the light-emitting element L1 to emit light.

[0161] Figure 8 This is a schematic diagram of another pixel structure provided in an embodiment of this disclosure. For example... Figure 8 As shown, the light-emitting control sub-circuit P11 may include: a first light-emitting control transistor T1 and a second light-emitting control transistor T2. The data writing sub-circuit P12 may include: a data writing transistor T3. The storage sub-circuit P13 may include: a storage capacitor C1. The driving sub-circuit P14 includes: a driving transistor T4. Combined with... Figure 7 It can be considered that: the first light-emitting control transistor T1 and the second light-emitting control transistor T2 are located in the non-display area B1, and the data writing transistor T3, the driving transistor T4, and the storage capacitor C1 are located in the display area A1. Accordingly, the circuit structure of the display area A1 can be considered as a 2T1C structure (i.e., including 2 transistors and 1 capacitor).

[0162] The gate of the first light-emitting control transistor T1 can be coupled to the first light-emitting control terminal EM1, the first terminal of the first light-emitting control transistor T1 can be coupled to the second power supply terminal Elvdd, and the second terminal of the first light-emitting control transistor T1 can be coupled to the first node N1.

[0163] The gate of the second light-emitting control transistor T2 can be coupled to the second light-emitting control terminal EM2, the first terminal of the second light-emitting control transistor T2 can be coupled to the first power supply terminal Gnd, and the second terminal of the second light-emitting control transistor T2 can be coupled to the first node N1.

[0164] The gate of the data writing transistor T3 can be coupled to the scan control terminal Scan, the first terminal of the data writing transistor T3 can be coupled to the data signal terminal Data, and the second terminal of the data writing transistor T3 can be coupled to the second node N2.

[0165] The first end of the storage capacitor C1 can be coupled to the second node N2, and the second end of the storage capacitor C1 can be coupled to the first power supply terminal Gnd.

[0166] The gate of the driving transistor T4 can be coupled to the second node N2, the first terminal of the driving transistor T4 can be coupled to the first node N1, and the second terminal of the driving transistor T4 can be coupled to the first terminal of the light-emitting element L1 (e.g., the anode shown in 8).

[0167] Optionally, in this embodiment of the disclosure, the multiple pixels 02 can be arranged in an array, that is, the multiple pixels 02 can be arranged in rows and columns, and the display panel includes multiple rows and columns of pixels. Combined with the above... Figure 2 The column direction is the first direction X1, and the row direction is the second direction X2. Based on this, multiple pixels 02 located in the same row can share a single light-emitting control sub-circuit P11, that is, they can share the first light-emitting control transistor T1 and the second light-emitting control transistor T2 located in the non-display area B1. In other words, for each row of pixels 02, the display area A1 only includes the 2T1C circuit structure described in the above embodiment, and the non-display area B1 only includes one first light-emitting control transistor T1 and one second light-emitting control transistor T2. This effectively improves the PPI of the display panel.

[0168] Optionally, in this embodiment of the disclosure, the transistors included in each sub-circuit of the pixel circuit P1 are... Figure 8 The first light-emitting control transistor T1, the second light-emitting control transistor T2, the data writing transistor T3, and the driving transistor T4 shown can all be N-type transistors. For example, they can all be NMOS transistors as described in the above embodiments, fabricated using NMOS technology.

[0169] Currently, in silicon-based micro-OLED microdisplays, the pixel circuitry of the display panel generally includes both NMOS and PMOS transistors, meaning it is fabricated using a CMOS process that combines NMOS and PMOS technologies. However, testing has revealed that using CMOS technology to form pixel circuitry inevitably introduces several problems:

[0170] (1) Due to the design rules of CMOS process, the output uniformity of NMOS and PMOS transistors is poor. Based on this, it is necessary to adjust the channel width (W) and channel length (L) of the transistor, such as increasing W and L. This is not conducive to the design of high PPI of display panels, thus restricting the design of high PPI.

[0171] (2) The film layers of NMOS transistors and PMOS transistors need to be located on different sides and made using different masks. This not only results in a thicker display panel but also requires the foundry to use more mask layers when manufacturing wafers, leading to higher costs and more complex processes. A wafer is a display panel.

[0172] (3) When NMOS and PMOS transistors coexist, if a short circuit occurs between the cathode and anode of a certain light-emitting element L1, a latch-up effect will occur, causing the light-emitting element L1 to fail to emit light under the drive of the pixel circuit P1, i.e., it will not emit light. The location of the light-emitting element L1 will appear as a black dot. This black dot will cause the light-emitting elements L1 located in the same column as the light-emitting element L1 to emit light abnormally, i.e., a dotted line display abnormality will occur.

[0173] (4) The general data writing transistor T3 includes an NMOS transistor and a PMOS transistor. The N-type substrate of the PMOS transistor is prone to leakage, which causes the data signal to be mistakenly transmitted to the gate of the driving transistor T4 and stored in the storage capacitor C1, thus causing bright spots to appear on the display panel when displaying low grayscale images.

[0174] Therefore, by using only NMOS technology to manufacture the pixel circuit P1, ensuring that all transistors in the pixel circuit P1 are N-type transistors, the aforementioned problems of traditional pixel circuits can be effectively solved. For example, it not only facilitates high PPI design, reduces the number of mask layers in foundry wafer fabrication, lowers costs, and simplifies the process, but also prevents dot-matrix issues and low-grayscale bright spot issues caused by short circuits between the cathode and anode of the light-emitting element L1, ensuring better display performance of the display panel. Of course, in some other embodiments, the transistors included in each sub-circuit of the pixel circuit P1 can also be PMOS transistors.

[0175] by Figure 8 Taking pixel circuit P1 as an example, where all transistors in pixel circuit P1 are N-type transistors, the first potential is high, and the second potential is low, the working principle of pixel circuit P1 is introduced as follows:

[0176] Figure 9 A timing diagram of the signal terminals coupled to pixel circuit P1 is shown. For example... Figure 9 As shown, driving the light-emitting element L1 to emit light can include: a reset phase t1, a data writing phase t2, and an emission phase t3.

[0177] During the reset phase t1, the potentials of the scan control signal provided by the scan control terminal Scan, the second power supply signal provided by the second power supply terminal Elvdd, the data signal provided by the data signal terminal Data, and the first light emission control signal provided by the first light emission control terminal EM1 are all at the second potential (i.e., low potential). Only the potential of the second light emission control signal provided by the second light emission control terminal EM2 is at the first potential (i.e., high potential). Furthermore, the storage capacitor C1 maintains the potential of the second node N2 at a high potential during this phase. Correspondingly, the data writing transistor T3 and the first light emission control transistor T1 are both turned off, while the driving transistor T4 and the second light emission control transistor T2 are both turned on. The low-potential first power supply signal provided by the first power supply terminal Gnd is transmitted to the anode of the light-emitting element L1 via the turned-on second light emission control transistor T2 and driving transistor T4, thereby resetting the anode.

[0178] During the data writing phase t2, the potentials of the scan control signal, the data signal, and the second light-emitting control signal are all high, while the potentials of the first light-emitting control signal and the second power supply signal are both low. Correspondingly, the data writing transistor T3, the second light-emitting control transistor T2, and the driving transistor T4 are all turned on, while the first light-emitting control transistor T1 is turned off. The data signal is transmitted to the second node N2 via the turned-on data writing transistor T3, thus completing the data writing process.

[0179] During the light-emitting phase t3, the potentials of the scan control signal, data signal, and second light-emitting control signal are low, while the potentials of the second power supply signal and the first light-emitting control signal are high. Furthermore, due to the storage effect of storage capacitor C1, the potential of the second node N2 remains high. Correspondingly, both the data writing transistor T3 and the second light-emitting control transistor T2 are turned off, while both the first light-emitting control transistor T1 and the driving transistor T4 are turned on. The high-potential second power supply signal is transmitted to the first node N1 via the turned-on first light-emitting control transistor T1. Based on the potentials of the first node N1 and the second node N2, the driving transistor T4 transmits a driving current to the anode of the light-emitting element L1 to illuminate the light-emitting element.

[0180] That is, in this embodiment of the present disclosure, data transmission can be performed by a data writing transistor T3, which is an NMOS transistor. By flexibly designing the voltage amplitude (VGH) of the scan control signal provided by the scan control terminal Scan, compared to traditional CMOS transmission gates (i.e., including NMOS and PMOS transistors), the data writing transistor T3 can transmit the highest grayscale voltage VGH-Vth to the storage capacitor C1 (i.e., the second node N2), where Vth refers to the threshold voltage of the data writing transistor T3. The data signal (i.e., the grayscale signal) transmitted to the storage capacitor C1 can control the gate potential of the driving transistor T4. The change in the gate potential of the driving transistor T4 can further control the anode potential of the light-emitting element L1, thereby realizing the writing of data signals of different grayscale levels, and the light-emitting element L1 emits the corresponding grayscale brightness.

[0181] Furthermore, the first light-emitting control transistor T1 and the second light-emitting control transistor T2 can charge and discharge the first node N1, thereby controlling the anode potential of the light-emitting element L1. Only one light-emitting control transistor is turned on at any given time. For example, when the first light-emitting control transistor T1 is off and the second light-emitting control transistor T2 is on, the anode potential can be discharged to the second potential of the first power supply signal. At this time, the first power supply signal can cooperate with the common power supply voltage to ensure that the light-emitting element L1 achieves 0 grayscale brightness. When the first light-emitting control transistor T1 is on and the second light-emitting control transistor T2 is off, the first node N1 can be charged to the first potential of the second power supply signal. Therefore, the driving transistor T4 can control the anode potential of the light-emitting element L1 through the grayscale signal written at its gate and the second power supply signal written at its first electrode, enabling the light-emitting element L1 to reliably emit light.

[0182] It should be noted that in the first and second terminals of the transistor described in the embodiments of this disclosure, one terminal may refer to the source terminal and the other terminal may refer to the drain terminal.

[0183] In summary, this disclosure provides a display panel comprising: a substrate having a display area and a non-display area; pixels located in the display area; and a temperature sensing circuit and a trimming circuit located in the non-display area. The temperature sensing circuit transmits a target temperature sensing current to a driving circuit based on the temperature of the display area, and the trimming circuit transmits a target trimming current to the driving circuit. This target temperature sensing current and target trimming current allow the driving circuit to compensate for the common power supply voltage and transmit the compensated common power supply voltage to the pixels to drive them to emit light. This allows the driving circuit to flexibly adjust the common power supply voltage transmitted to the pixels based on the temperature of the display area. Thus, the impact of temperature on pixel brightness can be reduced, ensuring that the pixels can emit light normally even when a large amount of heat accumulates in the display area. The display panel provided by this disclosure provides good display performance.

[0184] Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure. Figure 10 As shown, the display device includes: a driving circuit 10, and a display panel 00 as shown in the above figures.

[0185] Among them, combined Figure 1 The driving circuit 10 can be coupled to a first reference power supply terminal Vref1, a second reference power supply terminal Vref2, multiple trim control terminals Trim1…Trimn, and multiple pixels O2 in the display panel 00. The driving circuit 10 can be used to provide a first reference power supply signal to the first reference power supply terminal Vref1, a second reference power supply signal to the second reference power supply terminal Vref2, trim control signals to the multiple trim control terminals Trim1…Trimn, and a common power supply voltage to the multiple pixels O2.

[0186] Furthermore, the driving circuit 10 can also be coupled to the temperature sensing circuit 03 and the adjustment circuit 04 in the display panel 00. The driving circuit 10 can also be used to compensate the common power supply voltage based on the target temperature sensing current transmitted by the temperature sensing circuit 03 and the target adjustment current transmitted by the adjustment circuit 04.

[0187] That is, the circuit that provides signals to the signal terminals coupled to the circuits in the display panel and the circuit that compensates for the common power supply voltage can be the same circuit. Of course, in some other embodiments, the signal providing and compensation operations can be performed by two separate circuits.

[0188] Figure 11 This is a schematic diagram of the internal structure of a driving circuit 10 provided in an embodiment of this disclosure. For example... Figure 11 As shown, the driving circuit 10 may include: a voltage converter, a comparator (COMP), an analog-to-digital converter (ADC), and a digital-to-analog converter (DAC).

[0189] The comparator COMP can have a positive input terminal (+) and a negative input terminal (-). The voltage converter can be grounded and coupled to the positive input terminal (+) of the comparator COMP. The negative input terminal (-) of the comparator COMP can be coupled to the output terminal of the digital-to-analog converter (DAC), and the output terminal of the comparator COMP can be coupled to the input terminal of the analog-to-digital converter (ADC). The output terminal of the ADC can be coupled to both the input terminal of the DAC and the common power supply terminal Vcom. Figure 5The voltage converter can also be coupled to the target node N0 to receive the compensation current I. PTAT .

[0190] A voltage converter is used to convert the compensation current I PTAT The voltage is converted into a compensation voltage ΔV and transmitted to the positive input of the comparator COMP. The comparator COMP receives the analog voltage (which can be called the reference voltage) from the digital-to-analog converter (DAC) and compares the compensation voltage ΔV at the positive input (+) with the reference voltage at the negative input (-), transmitting the comparison result to the analog-to-digital converter (ADC). The ADC converts the comparison result from an analog signal to a digital signal. The DAC converts this digital signal back to an analog signal and transmits it to the negative input (-) of the comparator COMP. In other words, the digital signal output by the ADC can be fed back to the negative input (-) of the comparator COMP via the DAC. Ultimately, the output of the ADC is made to converge to an absolute positive correlation with temperature. Then, the drive circuit 10 can be based on... Figure 11 The compensation algorithm shown, Voled = Vdata - (Vcom1 + ΔV), compensates for the common power supply voltage to be compensated. Under the drive of this Voled, the light-emitting element L1 exhibits good stability in brightness.

[0191] As described in the above embodiments, Voled refers to the voltage difference between the anode and cathode of the light-emitting element L1, and Vdata refers to the potential of the data signal. Figure 11 The top left corner also shows a linear graph of temperature T versus compensation voltage ΔV, with the horizontal axis representing temperature T and the vertical axis representing compensation voltage ΔV. And, Figure 11 The bottom right corner also shows a graph showing the relationship between brightness, temperature, and Volt. The vertical axis represents brightness (L) in nits, temperature is measured in degrees Celsius (°C), and voltage is measured in volts (V). This graph shows that at a temperature T = 70°C, controlling the Volt at approximately 7V achieves a brightness of 2000 nits. At a temperature T = 80°C, controlling the Volt at approximately 8V achieves the same brightness. Therefore, it can be determined that by compensating for the common power supply voltage, the brightness of the light-emitting element L1 can be made as consistent as possible at different temperatures, ensuring a better display effect for the display panel.

[0192] Optionally, in this embodiment, the operation of the voltage comparator may be unaffected by temperature to ensure reliable compensation of the common power supply voltage. For example, the voltage comparator may include two resistors connected in series, one with a resistance value positively correlated with temperature and the other with a resistance value negatively correlated with temperature, thereby canceling each other out and ensuring that the final output of the voltage comparator is unaffected by temperature.

[0193] Optionally, as described in the above embodiments, the display device provided in this disclosure may include: a silicon-based OLED microdisplay device.

[0194] Figure 12 This is a flowchart of a signal compensation method provided in an embodiment of this disclosure, which can be applied to, for example... Figure 10 or Figure 11 In the driving circuit shown, such as Figure 12 As shown, the method includes:

[0195] Step 1201: Provide a first reference power signal with a first potential to a first reference power supply terminal, provide a second reference power signal with a first potential to a second reference power supply terminal, provide a trimming control signal with a first potential to at least one trimming control terminal among a plurality of trimming control terminals, and provide a trimming control signal with a second potential to the remaining trimming control terminals other than at least one trimming control terminal.

[0196] Step 1202: Receive the target temperature sensing current transmitted by the temperature sensing circuit.

[0197] The target temperature sensing current is generated by the temperature sensing circuit based on the temperature of the display area in the display panel, driven by the first reference power signal at the first potential, the second reference power signal at the first potential, and the first power signal provided by the coupled first power terminal.

[0198] Step 1203: Receive the target adjustment current transmitted by the adjustment circuit.

[0199] The target adjustment current is generated by the adjustment circuit under the drive of the first reference power supply signal at the first potential, the adjustment control signal at the first potential, and the first power supply signal provided by the coupled first power supply terminal.

[0200] Step 1204: Compensate the common power supply voltage based on the target temperature sensing current and the target adjustment current, and transmit the compensated common power supply voltage to multiple pixels to drive multiple pixels to emit light.

[0201] Optional, see reference Figure 13 The compensation of the common power supply voltage based on the target temperature sensing current and the target adjustment current (i.e., step 1204 above) may include:

[0202] Step 12041: Determine the compensation current after adding the target temperature sensing current and the target adjustment current.

[0203] Optionally, according to the above embodiments, the temperature sensing circuit and the adjustment circuit can be coupled to the driving circuit via the same target node. In this case, the driving circuit can directly receive the compensation current from the target node. Alternatively, in some embodiments, the temperature sensing circuit and the adjustment circuit can respectively transmit the target temperature sensing current and the target adjustment current to the driving circuit. In this case, the driving circuit can sum the target temperature sensing current and the target adjustment current to obtain the compensation current.

[0204] Step 12042: Convert the compensation current into a compensation voltage.

[0205] Optionally, in conjunction with the above embodiments, the driving circuit may include a voltage converter. The driving circuit can use this voltage converter to convert the determined compensation current to obtain a compensation voltage. Of course, in some embodiments, the compensation current can also be converted into a compensation voltage by a voltage conversion circuit independent of the driving circuit and then transmitted to the driving circuit.

[0206] Step 12043: Add the compensated voltage to the original common power supply voltage to obtain the compensated common power supply voltage.

[0207] Optionally, in conjunction with the above embodiments, the driving circuit can add the determined compensation voltage to the common power supply voltage to obtain the compensated common power supply voltage, such that the voltage difference between the anode and cathode of the light-emitting element = Vdata - (compared common power supply voltage + compensation voltage), ensuring good luminous brightness of the light-emitting element. Of course, in some other embodiments, depending on the application scenario, the driving circuit can also calculate the difference between the determined compensation voltage and the common power supply voltage to obtain the compensated common power supply voltage.

[0208] In summary, the embodiments of this disclosure provide a signal compensation method. In this method, the driving circuit can receive a target temperature sensing current transmitted by the temperature sensing circuit based on the temperature of the display area, and a target adjustment current transmitted by the adjustment circuit. Based on the target temperature sensing current and the target adjustment current, the common power supply voltage is compensated, and the compensated common power supply voltage is transmitted to the pixel to drive the pixel to emit light. That is, the driving circuit can flexibly adjust the common power supply voltage transmitted to the pixel based on the temperature of the display area. In this way, the influence of temperature on the brightness of pixel emission can be reduced, ensuring that the pixel can emit light normally even when a lot of heat is accumulated in the display area, thus ensuring a better display effect of the display panel.

[0209] The terminology used in the embodiments of this disclosure is for the purpose of explaining the embodiments of this disclosure only and is not intended to limit this disclosure. Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should be understood in their ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains.

[0210] For example, the terms "first," "second," or "third," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0211] Similarly, words like "one" or "one" do not indicate a quantity limit, but rather that there is at least one.

[0212] The word “includes” or similar terms means that the elements or objects preceding “includes” or “include” cover the elements or objects listed after “includes” or “include” or their equivalents, and do not exclude other elements or objects.

[0213] "Up," "down," "left," or "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0214] The "and / or" signifies that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0215] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A display panel, the display panel comprising: The substrate (01) has a display area (A1) and a non-display area (B1) that at least partially surrounds the display area (A1); Multiple pixels (02) are located in the display area (A1), the multiple pixels (02) are used to be coupled to the driving circuit and to emit light based on the common power supply voltage transmitted by the driving circuit; A temperature sensing circuit (03) is located in the non-display area (B1). The temperature sensing circuit (03) is coupled to the first reference power supply terminal (Vref1), the second reference power supply terminal (Vref2), and the first power supply terminal (Gnd), and is also used to be coupled to the driving circuit. The temperature sensing circuit (03) is used to transmit a target temperature sensing current to the driving circuit based on the temperature of the display area (A1) under the drive of the first reference power supply signal provided by the first reference power supply terminal (Vref1), the second reference power supply signal provided by the second reference power supply terminal (Vref2), and the first power supply signal provided by the first power supply terminal (Gnd). The magnitude of the target temperature sensing current is positively correlated with the temperature of the display area (A1). The adjustment circuit (04) is located in the non-display area (B1). The adjustment circuit (04) is coupled to the first reference power supply terminal (Vref1), a plurality of adjustment control terminals (Trim1...Trimn) and the first power supply terminal (Gnd), and is also used to be coupled to the driving circuit. The adjustment circuit (04) is used to transmit a target adjustment current to the driving circuit under the drive of an adjustment control signal of a first potential provided by at least one of the adjustment control terminals, the first reference power supply signal and the first power supply signal. The magnitude of the target adjustment current is positively correlated with the number of adjustment control signals of the first potential, and the target adjustment current is used to correct the target temperature sensing current. The temperature sensing circuit (03) and the adjustment circuit (04) both include a switching transistor. The compensation current after the sum of the target temperature sensing current and the target adjustment current is used to compensate the common power supply voltage for the driving circuit, and the compensated common power supply voltage is transmitted to the plurality of pixels (02) to drive the plurality of pixels (02) to emit light.

2. The display panel according to claim 1, wherein, The temperature sensing circuit (03) includes: multiple temperature sensing sub-circuits (031); Each of the temperature sensing sub-circuits (031) is coupled to the first reference power supply terminal (Vref1), the second reference power supply terminal (Vref2) and the first power supply terminal (Gnd), respectively, and is used to be coupled to the driving circuit. Each of the temperature sensing sub-circuits (031) is used to transmit a temperature sensing current positively correlated with the temperature to the driving circuit based on the temperature of the display area (A1) under the drive of the first reference power supply signal, the second reference power supply signal and the first power supply signal. The target temperature sensing current is the sum of the temperature sensing currents transmitted by the plurality of temperature sensing sub-circuits (031).

3. The display panel according to claim 2, wherein, Each of the temperature sensing sub-circuits (031) includes: a first switch (K1) and a second switch (K2); The gate of the first switch (K1) is coupled to the first reference power supply terminal (Vref1), the first terminal of the first switch (K2) is coupled to the first power supply terminal (Gnd), and the second terminal of the first switch (K1) is coupled to the first terminal of the second switch (K2). The gate of the second switch (K2) is coupled to the second reference power supply terminal (Vref2), and the second terminal of the second switch (K2) is used to be coupled to the drive circuit.

4. The display panel according to claim 2, wherein, The display area (A1) is rectangular, and the non-display area (B1) at least surrounds the first side (a11) and the second side (a12) of the display area (A1) opposite each other in the first direction (X1). Of the plurality of temperature sensing sub-circuits (031), a portion of the temperature sensing sub-circuits (031) are located on the first side (a11) of the display area (A1) and are arranged sequentially along the second direction (X2); In addition to the aforementioned part of the temperature sensing sub-circuit (031), another part of the temperature sensing sub-circuit (031) is located on the second side (a12) of the display area (A1) and is arranged sequentially along the second direction (X2), where the first direction (X1) intersects with the second direction (X2).

5. The display panel according to claim 4, wherein, The number of the portion of temperature sensing sub-circuits (031) is the same as the number of the other portion of temperature sensing sub-circuits (031); Furthermore, the temperature sensing sub-circuits (031) are arranged at equal intervals, and / or the other part of the temperature sensing sub-circuits (031) are arranged at equal intervals.

6. The display panel according to claim 4, wherein, The first direction (X1) is perpendicular to the second direction (X2).

7. The display panel according to any one of claims 1 to 6, wherein, The tuning circuit (04) includes: multiple tuning sub-circuits (041); Each of the trimming sub-circuits (041) is respectively coupled to the plurality of trimming control terminals (Trim1…Trimn), the first reference power supply terminal (Vref1) and the first power supply terminal (Gnd), and is used to be coupled to the driving circuit. Each of the trimming sub-circuits (041) is used to transmit trimming current to the driving circuit under the drive of a trimming control signal provided by at least one of the trimming control terminals, the first reference power supply signal and the first power supply signal. The target adjustment current is the sum of the adjustment currents transmitted by the plurality of adjustment sub-circuits (041).

8. The display panel according to claim 7, wherein, The display area (A1) is rectangular, and the non-display area (B1) at least surrounds the first side (a11), the second side (a12) and the third side (a13) of the display area (A1); the adjustment circuit (04) includes two adjustment sub-circuits (041). Of the two adjustment circuits (041), one adjustment circuit (041) is located at the intersection of the third side (a13) and the first side (a11) of the display area (A1), and the other adjustment circuit (041) is located at the intersection of the third side (a13) and the second side (a12) of the display area (A1).

9. The display panel according to claim 7, wherein, Each of the tuner circuits (041) includes: a plurality of tuner units (0411); The plurality of trimming units (0411) are respectively coupled to the plurality of trimming control terminals (Trim1...Trimn) one by one, and each trimming unit (0411) is also coupled to the first reference power supply terminal (Vref1) and the first power supply terminal (Gnd), and is used to be coupled to the driving circuit. Each trimming unit (0411) is used to transmit trimming sub-current to the driving circuit under the drive of the trimming control signal provided by a coupled trimming control terminal, the first reference power supply signal and the first power supply signal; The adjustment current is the sum of the adjustment sub-currents transmitted by the plurality of adjustment units (0411).

10. The display panel according to claim 9, wherein, Each of the aforementioned adjustment units (0411) includes: a third switch (K3) and a fourth switch (K4); The gate of the third switch (K3) is coupled to the first reference power supply terminal (Vref1), the first terminal of the third switch (K3) is coupled to the first power supply terminal (Gnd), and the second terminal of the third switch (K3) is coupled to the first terminal of the fourth switch (K4). The gate of the fourth switch (K4) is coupled to the adjustment control terminal, and the second terminal of the fourth switch (K4) is used to be coupled to the drive circuit.

11. The display panel according to claim 10, wherein, Each of the tuner circuits (041) includes: four tuner units (0411).

12. The display panel according to any one of claims 1 to 6, wherein, The temperature sensing circuit (03) and the adjustment circuit (04) are both coupled to the same output node (N0), which is used to couple with the driving circuit.

13. The display panel according to any one of claims 1 to 6, wherein, Each pixel (02) includes: a pixel circuit (P1) located in the display area (A1) and the non-display area (B1), and a light-emitting element (L1) located in the display area (A1). The pixel circuit (P1) is coupled to the scan control terminal (Scan), the data signal terminal (Data), the first light emission control terminal (EM1), the second light emission control terminal (EM2), the second power supply terminal (Elvdd), the first power supply terminal (Gnd), and the first electrode of the light emission element (L1), and is used to transmit a light emission driving signal to the first electrode of the light emission element (L1) based on the scan signal provided by the scan control terminal (Scan), the first light emission control signal provided by the first light emission control terminal (EM1), the second light emission control signal provided by the second light emission control terminal (EM2), the second power supply signal provided by the second power supply terminal (Elvdd), and the first power supply signal. The second electrode of the light-emitting element (L1) is coupled to a common power supply terminal (Vcom). The common power supply terminal (Vcom) is used to be coupled to the driving circuit and to receive the common power supply voltage provided by the driving circuit. The light-emitting element (L1) is used to emit light based on the common power supply voltage and the light-emitting driving signal.

14. The display panel according to claim 13, wherein, The pixel circuit (P1) includes: a light emission control sub-circuit (P11) located in the non-display area (B1), and a data writing sub-circuit (P12), a storage circuit (P13), and a driving sub-circuit (P14) located in the display area (A1). The light-emitting control sub-circuit (P11) is coupled to the first light-emitting control terminal (EM1), the second light-emitting control terminal (EM2), the first power supply terminal (Gnd), the second power supply terminal (Elvdd), and the first node (N1) respectively, and is used to control the on / off state between the second power supply terminal (Elvdd) and the first node (N1) in response to the first light-emitting control signal, and to control the on / off state between the first power supply terminal (Gnd) and the first node (N1) in response to the second light-emitting control signal; The data writing sub-circuit (P12) is coupled to the scan control terminal (Scan), the data signal terminal (Data), and the second node (N2) respectively, and is used to control the connection and disconnection between the data signal terminal (Data) and the second node (N2) in response to the scan signal; The storage sub-circuit (P13) is coupled to the second node (N2) and the first power supply terminal (Gnd) respectively, and is used to store the potential of the second node (N2) based on the first power supply signal; The driving sub-circuit (P14) is coupled to the first pole of the first node (N1), the second node (N2) and the light-emitting element (L1) respectively, and is used to transmit a light-emitting driving signal to the light-emitting element (L1) based on the potential of the first node (N1) and the potential of the second node (N2).

15. The display panel according to claim 14, wherein, The light-emitting control sub-circuit (P11) includes a first light-emitting control transistor (T1) and a second light-emitting control transistor (T2); the data writing sub-circuit (P12) includes a data writing transistor (T3); the storage sub-circuit (P13) includes a storage capacitor (C1); and the driving sub-circuit (P14) includes a driving transistor (T4). The gate of the first light-emitting control transistor (T1) is coupled to the first light-emitting control terminal (EM1), the first terminal of the first light-emitting control transistor (T1) is coupled to the second power supply terminal (Elvdd), and the second terminal of the first light-emitting control transistor (T1) is coupled to the first node (N1). The gate of the second light-emitting control transistor (T2) is coupled to the second light-emitting control terminal (EM2), the first terminal of the second light-emitting control transistor (T2) is coupled to the first power supply terminal (Gnd), and the second terminal of the second light-emitting control transistor (T2) is coupled to the first node (N1). The gate of the data writing transistor (T3) is coupled to the scan control terminal (Scan), the first terminal of the data writing transistor (T3) is coupled to the data signal terminal (Data), and the second terminal of the data writing transistor (T3) is coupled to the second node (N2). The first end of the storage capacitor (C1) is coupled to the second node (N2), and the second end of the storage capacitor (C1) is coupled to the first power supply terminal (Gnd). The gate of the driving transistor (T4) is coupled to the second node (N2), the first terminal of the driving transistor (T4) is coupled to the first node (N1), and the second terminal of the driving transistor (T4) is coupled to the first terminal of the light-emitting element (L1). The first light-emitting control transistor (T1), the second light-emitting control transistor (T2), the data writing transistor (T3), and the driving transistor (T4) are all N-type transistors.

16. The display panel according to claim 14 or 15, wherein, The array of multiple pixels (02) is arranged such that multiple pixels (02) in the same row share one light emission control sub-circuit (P11).

17. The display panel according to any one of claims 1 to 6, wherein, The display panel is a silicon-based organic light-emitting diode (OLED) microdisplay panel.

18. A display device, the display device comprising: The driving circuit (10) and the display panel (00) as described in any one of claims 1 to 17; The driving circuit (10) is coupled to the first reference power terminal (Vref1), the second reference power terminal (Vref2), the plurality of trim control terminals (Trim1…Trimn) and the plurality of pixels (02) in the display panel (00), and is used to provide a first reference power signal to the first reference power terminal (Vref1), a second reference power signal to the second reference power terminal (Vref2), trim control signals to the plurality of trim control terminals (Trim1…Trimn), and a common power supply voltage to the plurality of pixels (02); Furthermore, the driving circuit (10) is also coupled to the temperature sensing circuit (03) and the adjustment circuit (04) in the display panel (00), and is used to compensate the common power supply voltage based on the compensation current after the sum of the target temperature sensing current transmitted by the temperature sensing circuit (03) and the target adjustment current transmitted by the adjustment circuit (04).

19. A signal compensation method, applied in the driving circuit of the display device as described in claim 18, the method comprising: A first reference power signal with a first potential is provided to a first reference power terminal, a second reference power signal with a first potential is provided to a second reference power terminal, a first potential adjustment control signal is provided to at least one of a plurality of adjustment control terminals, and a second potential adjustment control signal is provided to the remaining adjustment control terminals other than the at least one adjustment control terminal. The target temperature sensing current transmitted by the temperature sensing circuit is generated by the temperature sensing circuit based on the temperature of the display area in the display panel under the drive of the first reference power signal at the first potential, the second reference power signal at the first potential and the first power signal provided by the coupled first power terminal. The target adjustment current transmitted by the adjustment circuit is received. The target adjustment current is generated by the adjustment circuit under the drive of the first reference power supply signal at the first potential, the adjustment control signal at the first potential, and the first power supply signal provided by the coupled first power supply terminal. The common power supply voltage is compensated based on the sum of the target temperature sensing current and the target adjustment current, and the compensated common power supply voltage is transmitted to multiple pixels to drive the multiple pixels to emit light.

20. The method according to claim 19, wherein, The compensation of the common power supply voltage based on the compensation current obtained by accumulating the target temperature sensing current and the target adjustment current includes: Convert the compensation current into a compensation voltage; The compensated voltage is added to the original common power supply voltage to obtain the compensated common power supply voltage.

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