CN116013192A

CN116013192A - Micro-integrated circuit, micro-integrated circuit assembly, display panel and display device

Info

Publication number: CN116013192A
Application number: CN202310106893.7A
Authority: CN
Inventors: 周良
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2023-01-28
Filing date: 2023-01-28
Publication date: 2023-04-25

Abstract

The application discloses a micro integrated circuit, a micro integrated circuit assembly, a display panel and a display device. A micro integrated circuit: the energy storage module comprises two energy storage units, wherein the two energy storage units are used for alternately storing and releasing data signals; the comparator is used for receiving the reference signal and the data signal released by the energy storage module and outputting an enabling signal or a non-enabling signal according to the signal voltages of the data signal and the reference signal; the reference signal is a voltage conversion signal, and the signal voltage variation range of the data signal is between the maximum voltage and the minimum voltage of the reference signal; and a constant current switch for supplying a driving current to the light emitting element when receiving the enable signal. According to the embodiment of the application, the light emitting time of the light emitting element in a single light emitting frame can be adjusted by adjusting the time length that the reference signal is smaller than the data signal, so that the continuous adjustment of the light emitting brightness of the light emitting element is realized, and the problem that part of low-gray-scale brightness cannot be obtained through brightness adjustment is solved.

Description

Micro-integrated circuit, micro-integrated circuit assembly, display panel and display device

Technical Field

The application belongs to the technical field of display, and particularly relates to a micro-integrated circuit, a micro-integrated circuit assembly, a display panel and a display device.

Background

Currently, light emitting elements in display panels are generally provided as current-type light emitting elements. For an OLED (organic light-emitting diode) light-emitting element, a pixel circuit composed of a TFT (thin film transistor) and a capacitor is generally used as a driving circuit of the OLED. However, if the pixel circuit similar to the driving OLED is continuously used for controlling the light emission of the light emitting elements such as Micro-LED or Micro-LED, the problems of low gray scale color shift, low light emitting efficiency and the like exist.

In order to realize the light-emitting driving of light-emitting elements such as Micro-LEDs or Mini-LEDs, a Micro-integrated circuit Micro-IC is adopted in the related art to control the light emission of the light-emitting elements. Micro-ICs realize light emission driving of light emitting elements by digital PWM (pulse width modulation) signals. However, since the pulse width of the discrete digital PWM signal cannot fit to the brightness of all the nodes, a part of the low gray scale nodes cannot perform light emission control. For example, if the minimum light emission luminance corresponding to the digital PWM signal to which the Micro-IC can be fitted is 8 gray levels, the Micro-IC can control only the light emission luminance of the part of the gray levels below 8 gray levels to be identical to the light emission luminance of the 8 gray levels, or control the light emission luminance to be 0. That is, micro-ICs cannot generate a part of low gray scale light emission luminance.

Disclosure of Invention

The embodiment of the application provides a Micro integrated circuit, a Micro integrated circuit assembly, a display panel and a display device, which can solve the technical problem that partial low-gray-scale brightness cannot be generated when Micro-IC adopts a data PWM signal to adjust gray-scale brightness.

In a first aspect, embodiments of the present application provide a micro integrated circuit, including:

the energy storage module comprises two energy storage units, wherein the two energy storage units are used for alternately storing and releasing data signals;

the comparator is used for receiving the reference signal and the data signal released by the energy storage module and outputting an enabling signal or a non-enabling signal according to the signal voltages of the data signal and the reference signal; the reference signal is a voltage conversion signal, and the signal voltage variation range of the data signal is between the maximum voltage and the minimum voltage of the reference signal;

and a constant current switch for supplying a driving current to the light emitting element when receiving the enable signal.

In a second aspect, embodiments of the present application provide a micro-integrated circuit assembly for driving a light emitting unit, where the light emitting unit includes light emitting elements of at least three light emitting colors;

the micro integrated circuit assembly includes:

at least three micro integrated circuits, the micro integrated circuits being the micro integrated circuits of the first aspect; the output end of the micro integrated circuit is connected with the corresponding light-emitting element and is used for providing driving current for the corresponding light-emitting element;

At least three data signal input ends respectively connected with the corresponding data signal lines and used for respectively providing data signals for each micro integrated circuit;

and the scanning signal input end is connected with the scanning signal line and is used for providing the same scanning signal for each micro integrated circuit.

In a third aspect, an embodiment of the present application provides a micro-integrated circuit assembly, where the micro-integrated circuit assembly is configured to drive m×n light emitting units arranged in an array, and the light emitting units include light emitting elements with at least three light emitting colors; the micro integrated circuit assembly includes:

a x N x M micro integrated circuits, the micro integrated circuits being the micro integrated circuits of the first aspect; the output end of the micro integrated circuit is connected with the corresponding light-emitting element and is used for providing driving current for the corresponding light-emitting element; wherein a is the number of light-emitting elements in a single light-emitting unit, a is more than or equal to 3, M and N are integers more than or equal to 1;

a, N data signal input ends, wherein each data signal input end is respectively connected with the micro integrated circuits corresponding to the light emitting elements in the same column;

and M scanning signal input ends, wherein each scanning signal input end is respectively connected with the micro-integrated circuits corresponding to the light emitting elements in the same row.

In a fourth aspect, embodiments of the present application provide a display panel, including:

X is Y luminous units arranged in an array manner; the light-emitting unit comprises light-emitting elements with at least three light-emitting colors;

a plurality of micro-integrated circuit assemblies, the micro-integrated circuit assemblies comprising a plurality of micro-integrated circuits, the micro-integrated circuits being the micro-integrated circuits of the first aspect; wherein a single micro-integrated circuit is used to drive a single light emitting element.

In a fifth aspect, embodiments of the present application provide a display device including the display panel of the fourth aspect.

Compared with the prior art, the micro integrated circuit assembly, the display panel and the display device provided by the embodiment of the application can alternately store and release data signals in each luminous frame through the two energy storage units of the energy storage module by arranging the energy storage module and the comparator, and can release the data signals stored in the previous luminous frame through one of the energy storage units in a single luminous frame. The comparator can receive the data signal released by the energy storage module and the reference signal with variable signal voltage. The comparator can output an enabling signal according to the voltage comparison result of the reference signal and the data signal to drive the constant current switch to provide driving current for the light emitting element, so that light emission of the light emitting element is realized. The time length of the reference signal smaller than the data signal can be adjusted by adjusting the signal voltage of the data signal and the voltage conversion mode of the reference signal, so that the light emitting time of the light emitting element in a single light emitting frame is adjusted, and the brightness adjustment of the light emitting element is realized. Because the time length of the reference signal smaller than the data signal is continuously adjustable, the light-emitting time and the light-emitting brightness of the light-emitting element in a single light-emitting frame can also be continuously adjustable, the brightness adjustment precision is improved, and the brightness adjustment under low gray scale is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a micro-integrated circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a micro integrated circuit according to another embodiment of the present application;

FIG. 3 is a schematic diagram of a micro-integrated circuit according to another embodiment of the present application;

FIG. 4 is a schematic diagram of a micro-integrated circuit according to another embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a micro-integrated circuit according to another embodiment of the present application;

FIG. 6 is a schematic diagram of signal timing of a scan signal according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of signal timing of reference signals and data signals according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of signal timing of reference signals and data signals according to another embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a micro-integrated circuit assembly according to one embodiment of the present application;

FIG. 10 is a schematic diagram of a terminal connection of a micro integrated circuit assembly according to one embodiment of the present application;

FIG. 11 is a schematic view of a portion of a display panel according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a portion of a display panel according to another embodiment of the present disclosure;

FIG. 13 is a schematic partial cross-sectional view of a display panel according to another embodiment of the present application;

fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present application.

In the accompanying drawings:

10. an energy storage module; 20. a comparator; 30. a constant current switch; l, a light-emitting element; sweep, reference signal; SEL, control signal; source, data signal; gate, scan signal; 11. a first energy storage unit; 12. a second energy storage unit; t1, a first charging transistor; t2, a second charging transistor; t3, a first discharge transistor; t4, a second discharge transistor; t5, a data writing transistor; c1, a first energy storage capacitor; and C2, a second energy storage capacitor.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

In order to solve the above technical problems, embodiments of the present application provide a micro integrated circuit, a micro integrated circuit assembly, a display panel and a display device. The following first describes a display panel provided in an embodiment of the present application.

Fig. 1 shows a schematic structural diagram of a micro integrated circuit according to an embodiment of the present application. The micro integrated circuit comprises an energy storage module 10, a comparator 20 and a constant current switch 30.

The energy storage module 10 includes two energy storage units, which can alternately store and release the data signal Source. Taking two adjacent light-emitting frames as an example, in the former light-emitting frame, one energy storage unit can store a data signal Source, and the other energy storage unit can release the data signal Source; in the latter light-emitting frame, the energy storage unit having stored the data signal Source may perform the release of the data signal Source, and the other energy storage unit may perform the storage of the data signal Source.

It will be appreciated that in the manner of data storage and release using a single energy storage unit, each light-emitting frame includes a light-emitting phase and a non-light-emitting phase, in which the energy storage unit needs to be charged by introducing a data signal Source and perform initialization and the like. Therefore, the light emission time of the light emitting element L in a single light emission frame cannot reach 100%. And the two energy storage units are adopted to alternately store and release the data signal Source, and in a single light-emitting frame, when one energy storage unit releases the data signal Source, the other energy storage unit can introduce the data signal Source to store and charge. Therefore, the non-light emitting period may not be included in the light emitting frame in which each energy storage unit releases the data signal Source. That is, the maximum light emission duration of the light emitting element L in a single light emission frame can reach 100% of the total light emission frame duration.

The comparator 20 includes two input terminals and an output terminal, the two input terminals can respectively receive the reference signal Sweep and the data signal Source released by the energy storage module 10, and the comparator 20 can compare the signal voltage of the data signal Source with the signal voltage of the reference signal Sweep and output an enable signal or a disable signal according to the comparison result.

The reference signal Sweep may be a voltage-variable voltage-converted signal whose voltage magnitude may vary between a maximum voltage and a minimum voltage of the reference signal Sweep. The signal voltage variation range of the data signal Source may be between the maximum voltage and the minimum voltage of the reference signal Sweep.

It is understood that the signal voltage of the data signal Source may be greater than the maximum voltage of the reference signal Sweep or less than the minimum voltage of the reference signal Sweep, and the comparison result of the voltage levels of the data signal Source and the reference signal Sweep in a single light-emitting frame by the comparator will always be the data signal Source greater than the reference signal Sweep or the data signal Source less than the reference signal Sweep. That is, the light emitting duration of the light emitting element L in a single light emitting frame is 100% of the light emitting frame or the light emitting duration is 0.

Taking a single light-emitting frame as an example, one of the two energy storage units may store the data signal Source in a previous light-emitting frame and release the data signal Source in the light-emitting frame. In the light-emitting frame, the energy storage unit can maintain the signal voltage of the data signal Source unchanged during discharging. Therefore, in the light-emitting frame, the comparator 20 may output an enable signal or a disable signal according to a comparison result of the reference signal Sweep in which the signal voltage is changed and the data signal Source in which the signal voltage is kept unchanged.

As an alternative embodiment, the comparator 20 may output a disable signal when the reference signal Sweep is greater than the data signal Source; the enable signal is output when the reference signal Sweep is smaller than the data signal Source. By setting the voltage conversion curve of the reference signal Sweep and the signal voltage of the data signal Source, the time interval in which the reference signal Sweep is smaller than the data signal Source in a single light-emitting frame can be adjusted, and the light-emitting time interval of the light-emitting element L in the single light-emitting frame can be further adjusted.

The constant current switch 30 may be connected to an output terminal of the comparator 20, and when the comparator 20 outputs an enable signal, the constant current switch 30 may turn on the light emitting element L and the power signal to provide a driving current for the light emitting element L, so that the light emitting element L may emit light.

In a single light emitting frame, since the reference signal Sweep is smaller than the data signal Source, the comparator 20 outputs the enable signal. Therefore, the time interval in which the reference signal Sweep is smaller than the data signal Source is the light emitting time interval of the light emitting element L in the light emitting frame. By adjusting the length of the time interval in which the reference signal Sweep is smaller than the data signal Source in a single light-emitting frame, the light-emitting time of the light-emitting element L in the single light-emitting frame can be adjusted.

The constant current switch 30 may supply a constant driving current to the light emitting element L, so that the light emitting luminance of the light emitting element L has a positive correlation with the light emitting time. The brightness adjustment of the light emitting element L can be achieved by adjusting the light emitting time of the light emitting element L in a single light emitting frame. For the linearly-changing reference signal Sweep, when the signal voltage of the data signal Source is adjusted up and down, the corresponding time node when the signal voltage of the reference signal Sweep is consistent with the signal voltage of the data signal Source may also be linearly shifted forward or linearly shifted backward in a single period. In a single signal period of the reference signal Sweep, the time node may divide the single signal period into a time interval in which the reference signal Sweep is greater than the data signal Source and a time interval in which the reference signal Sweep is less than the data signal Source. By adjusting the signal voltage of the data signal Source so that the time node moves linearly in the time interval of a single signal period, the length of the time interval of the reference signal Sweep smaller than the data signal Source can be continuously adjusted. The duty ratio of the enable signal output from the comparator 20 can be adjusted between 0 and 100% within a single light-emitting frame, and accordingly, the light-emitting time and the light-emitting brightness of the light-emitting element L can be continuously adjustable, thereby improving the brightness adjustment range and the brightness adjustment precision when the brightness of the light-emitting element L is adjusted.

In the related art, a driving mode of fitting each gray-scale light-emitting luminance by using a discrete digital PWM signal is adopted, and as the minimum light-emitting luminance which can be fitted by using the digital PWM signal is limited, when the luminance corresponding to a part of gray-scale value is smaller than the minimum light-emitting luminance, the light-emitting luminance corresponding to the part of gray-scale value cannot be fitted. In this embodiment, by setting the voltage conversion curve of the reference signal Sweep and the signal voltage of the data signal Source in a single light-emitting frame, the time length of the reference signal Sweep in the single light-emitting frame smaller than the data signal Source can be flexibly adjusted, so as to adjust the light-emitting time of the light-emitting element L in the single light-emitting frame, and the light-emitting time of the light-emitting element L is used to realize brightness adjustment of different gray scales. For part of gray scales in the low gray scale interval, the length of the time interval in which the reference signal Sweep is smaller than the data signal Source can be continuously adjusted by adjusting the signal voltage of the data signal Source. In the case where the constant current switch 30 supplies a constant driving current to the light emitting element L, the light emitting luminance of the light emitting element L has a linear correspondence with the light emitting time. Therefore, by continuously adjusting the time interval length of the reference signal Sweep smaller than the data signal Source, the continuous adjustment of the light-emitting brightness can be realized, so that the light-emitting element L can generate the light-emitting brightness corresponding to each gray level in the low gray level.

In the present embodiment, by providing the energy storage module 10 and the comparator 20, the storage and release of the data signal Source can be alternately performed in each light-emitting frame through two energy storage units of the energy storage module 10, and the data signal Source stored in the previous light-emitting frame can be released through one of the energy storage units in a single light-emitting frame. The comparator 20 may receive the data signal Source released from the energy storage module 10 and the reference signal Sweep with variable signal voltage. The comparator 20 may output an enable signal to drive the constant current switch 30 to supply a driving current to the light emitting element L according to the voltage comparison result of the reference signal Sweep and the data signal Source, thereby realizing light emission of the light emitting element L. By adjusting the signal voltage of the data signal Source and the voltage conversion mode of the reference signal Sweep, the time length of the reference signal Sweep smaller than the data signal Source can be adjusted, and the light emitting time of the light emitting element L in a single light emitting frame can be further adjusted. Since the time length of the reference signal Sweep smaller than the data signal Source is continuously adjustable, the light emitting time of the light emitting element L in a single light emitting frame can also be continuously adjusted, the brightness adjustment precision is improved, and the brightness adjustment under partial low gray scale is realized.

Referring to fig. 2, in some embodiments, the micro integrated circuit may further include a data writing transistor T5. The Gate of the data writing transistor T5 is connected to the scanning signal line, and can receive the scanning signal Gate output from the scanning signal line. A first pole of the data writing transistor T5 may be connected to a data signal line, receiving a data signal Source output from the data signal line. A second pole of the data writing transistor T5 may be connected with the energy storage module 10.

The enabling signal of the scan signal Gate may be outputted row by row, in the micro integrated circuit, when the Gate of the data writing transistor T5 receives the enabling signal of the scan signal Gate, the data signal line is connected to the energy storage module 10, and the data signal Source outputted by the data signal line is introduced into the energy storage module 10 to charge the energy storage module 10.

It should be noted that, when the data writing transistor T5 is turned on in a single light-emitting frame, only one of the two energy storage units of the energy storage module 10 is connected to the data signal line, and the energy storage unit connected to the data signal line stores the data signal Source in the light-emitting frame, and the other energy storage unit is connected to the comparator 20 in the light-emitting frame, so as to release the data signal Source.

As shown in fig. 2, in some embodiments, the energy storage module 10 may include a first energy storage unit 11 and a second energy storage unit 12.

The first energy storage unit 11 may be connected to the second pole of the data writing transistor T5, and the first energy storage unit 11 may also be connected to the first comparison terminal of the comparator 20.

The second energy storage unit 12 may be connected to the second pole of the data writing transistor T5, and the second energy storage unit 12 may also be connected to the first comparison terminal of the comparator 20.

The control terminal of the first energy storage unit 11 and the control terminal of the second energy storage unit 12 may be connected to a control signal line. The control signal SEL output from the control signal line is a first control signal and a second control signal alternately output.

When the control signal line outputs the first control signal, the first energy storage unit 11 may be in communication with the data writing transistor T5 under the first control signal, and the second energy storage unit 12 may be in communication with the comparator 20 under the first control signal. That is, when the control signal line outputs the first control signal, the first energy storage unit 11 may be connected to the data signal line to realize the storage of the data signal Source; the second energy storage unit 12 may be in communication with the comparator 20 to effect the release of the data signal Source.

When the control signal line outputs the second control signal, the first energy storage unit 11 may be in communication with the comparator 20 under the second control signal, and the second energy storage unit 12 may be in communication with the data writing transistor T5 under the second control signal. That is, when the control signal line outputs the second control signal, the second energy storage unit 12 may communicate with the data signal line to realize the storage of the data signal Source; the first energy storage unit 11 may communicate with the comparator 20 to realize the release of the data signal Source.

By alternately outputting the first control signal and the second control signal, the first energy storage unit 11 and the second energy storage unit 12 may be alternately made to store and release the data signal Source.

Referring to fig. 3, in some embodiments, the first energy storage unit 11 may include a first energy storage capacitor C1, a first charging transistor T1 and a first discharging transistor T3.

The first end of the first energy storage capacitor C1 can be electrically connected with the second power supply signal line, the first pole of the first charging transistor T1 can be connected with the second pole of the data writing transistor T5, the second pole of the first charging transistor T1 is connected with the second end of the first energy storage capacitor C1, and the grid electrode of the first charging transistor T1 is connected with the control signal line. A first pole of the first discharge transistor T3 is connected to a first comparison terminal of the comparator 20, a second pole of the first discharge transistor T3 is connected to a second terminal of the first storage capacitor C1, and a gate of the first discharge transistor T3 is connected to the control signal line.

One of the first charge transistor T1 and the first discharge transistor T3 is an N-type transistor, and the other is a P-type transistor. That is, the first charge transistor T1 and the first discharge transistor T3 are turned on in opposite states, and when the first charge transistor T1 is turned on, the first discharge transistor T3 is turned off; when the first discharge transistor T3 is turned on, the first charge transistor T1 is turned off.

When the control signal SEL output by the control signal line is a first control signal, the first charge transistor T1 is turned on, and the first discharge transistor T3 is turned off, and at this time, the second end of the first storage capacitor C1 is connected to the data writing transistor T5 through the first charge transistor T1. When the data writing transistor T5 receives the enable signal of the scan signal Gate, the data writing transistor T5 is turned on, and the data signal Source is introduced into the first storage capacitor C1 to be charged. In the charging process of the first energy storage capacitor C1, two ends of the first energy storage capacitor C1 respectively receive a data signal Source output by the data signal line and a second power signal provided by the second power signal line, and are charged under the driving of the data signal Source and the second power signal. The first power signal line and the second power signal line may be a positive power signal and a negative power signal, respectively. For example, the positive power supply signal may be VDD and the negative power supply signal may be GND. Thus, after the data signal Source is introduced into the first energy storage capacitor C1, the voltage at two ends of the first energy storage capacitor C1 is the signal voltage of the data signal Source.

In the next light-emitting frame, the control signal SEL output by the control signal line is changed to the second control signal, at this time, the first charge transistor T1 is turned off, the first discharge transistor T3 is turned on, and the second end of the first storage capacitor C1 is connected to the first comparison end of the comparator 20 through the first discharge transistor T3. The first storage capacitor C1 may release the data signal Source stored in the previous light-emitting frame to maintain the potential of the first comparison terminal of the comparator 20. That is, in the light-emitting frame, the first storage capacitor C1 can maintain the potential of the first comparison end of the comparator 20 at the signal voltage of the data signal Source received by the first storage capacitor C1 in the previous light-emitting frame by discharging.

In a single light-emitting frame, the signal voltage received by the first comparison terminal of the comparator 20 is the data signal Source provided by the data signal line in the previous light-emitting frame. And the signal voltage received by the first comparison terminal of the comparator 20 remains unchanged in the light-emitting frame. By adjusting the voltage conversion mode of the reference signal Sweep, the time length of the reference signal Sweep smaller than the data signal Source can be adjusted, so that the light emitting duration adjustment of the light emitting element L is realized.

Referring to fig. 4, in some embodiments, the second energy storage unit 12 may include a second energy storage capacitor C2, a second charging transistor T2 and a second discharging transistor T4.

The first end of the second energy storage capacitor C2 can be electrically connected with a second power supply signal line, the first pole of the second charging transistor T2 can be connected with the second pole of the data writing transistor T5, the second pole of the second charging transistor T2 is connected with the second end of the second energy storage capacitor C2, and the grid electrode of the second charging transistor T2 is connected with a control signal line. A first pole of the second discharge transistor T4 is connected to the first comparison terminal of the comparator 20, a second pole of the second discharge transistor T4 is connected to the second terminal of the second storage capacitor C2, and a gate of the second discharge transistor T4 is connected to the control signal line.

The second charging transistor T2 and the first discharging transistor T3 may be the same type of transistor, and the second discharging transistor T4 and the first charging transistor T1 may be the same type of transistor. That is, the second charge transistor T2 and the first discharge transistor T3 have the same on state, and the second discharge transistor T4 and the first charge transistor T1 have the same on state.

When the control signal SEL output by the control signal line is the first control signal, the second charging transistor T2 is turned off and the second discharging transistor T4 is turned on, and at this time, the second end of the second energy storage capacitor C2 is connected to the first comparison end of the comparator 20 through the second discharging transistor T4. The second storage capacitor C2 can release the data signal Source stored in the previous light-emitting frame to maintain the potential of the first comparison terminal of the comparator 20. That is, in the light-emitting frame, the second storage capacitor C2 can maintain the potential of the first comparison end of the comparator 20 at the signal voltage of the data signal Source received by the second storage capacitor C2 in the previous light-emitting frame by discharging.

In the next light emission frame, the control signal SEL output from the control signal line becomes the second control signal, and the second charge transistor T2 is turned on and the second discharge transistor T4 is turned off. At this time, the second end of the second storage capacitor C2 is connected to the data writing transistor T5 through the second charging transistor T2. When the data writing transistor T5 receives the enable signal of the scan signal Gate, the data writing transistor T5 is turned on, and the data signal Source is introduced into the second storage capacitor C2 to charge. In the charging process of the second energy storage capacitor C2, two ends of the second energy storage capacitor C2 are respectively connected with the data signal line and the second power signal line. After the data signal Source is introduced, the voltage at two ends of the second energy storage capacitor C2 is the signal voltage of the data signal Source.

The process of charging and discharging the second energy storage unit 12 is similar to that of the first energy storage unit 11 in the previous embodiment. In a single light-emitting frame, the signal voltage received by the first comparing terminal of the comparator 20 is the data signal Source provided by the data signal line to the second energy storage unit 12 in the previous light-emitting frame. In the light emitting frame, the second storage capacitor C2 maintains the signal voltage received by the first comparison terminal of the comparator 20 unchanged by discharging. That is, the first comparison terminal of the comparator 20 in a single light-emitting frame receives a stable voltage signal. By adjusting the voltage conversion mode of the reference signal Sweep, the time length of the reference signal Sweep smaller than the data signal Source can be adjusted, so that the light emitting duration adjustment of the light emitting element L is realized.

As shown in fig. 5, the first and second energy storage units 11 and 12 formed by the first charge transistor T1, the first discharge transistor T3, the second charge transistor T2, the second discharge transistor T4, the first energy storage capacitor C1, and the second energy storage capacitor C2 can alternately charge and discharge the data signal Source in each light emission frame.

In an alternative embodiment, the first charging transistor T1, the first discharging transistor T3, the second charging transistor T2, and the second discharging transistor T4 may all be the same type of transistors. The control signal line may generate two control signals SEL with opposite signals through the inverter, provide the first charge transistor T1 and the first discharge transistor T3 with the opposite control signals SEL, and provide the second charge transistor T2 and the second discharge transistor T4 with the opposite control signals SEL so that the first charge transistor T1 and the second discharge transistor T4 maintain the same on state and the second charge transistor T2 and the first discharge transistor T3 maintain the same on state.

In some embodiments, the first energy storage unit 11 and the second energy storage unit 12 may receive the first control signal output by the control signal line in the nth image frame and the second control signal output by the control signal line in the (n+1) th image frame. N may be a positive integer.

The micro-integrated circuit may drive the single light emitting element L to emit light, i.e., the micro-integrated circuit and the light emitting element L may form a light emitting pixel. The display panel may include a plurality of light emitting pixels arranged in an array. The plurality of scanning signal lines may supply the enable signal of the scanning signal Gate to the pixels of each row line by line, so that the pixels of each row receive the data signal Source in sequence for charging. The scanning signal line sequentially outputs enabling signals of a scanning signal Gate from the first row of luminous pixels to the last row of luminous pixels row by row, namely, one image frame.

In a single image frame, the control signal line outputs only the first control signal or only the second control signal.

In the micro integrated circuit of each light emitting pixel, when the control signal line outputs the first control signal, the first energy storage unit 11 is connected to the data writing transistor T5, and the second energy storage unit 12 is connected to the comparator 20. That is, in an image frame in which the control signal line outputs the first control signal, the first energy storage unit 11 in each micro integrated circuit communicates with the data signal line to store the data signal Source, and the second energy storage unit 12 in each micro integrated circuit communicates with the comparator 20 to release the data signal Source.

Accordingly, in the image frame in which the control signal line outputs the second control signal, the first energy storage unit 11 in each micro integrated circuit is connected to the comparator 20 to release the data signal Source, and the second energy storage unit 12 in each micro integrated circuit is connected to the data signal line to store the data signal Source.

Taking an nth image frame and an n+1th image frame as an example, in the nth image frame, each first energy storage unit 11 is communicated with a data signal line, each second energy storage unit 12 is communicated with the comparator 20, and at this time, a data signal Source released by each second energy storage unit 12 is a data signal Source stored in the N-1 th image frame. In the n+1th image frame, each of the first energy storage units 11 may communicate with the comparator 20, and maintain the potential of the first comparison terminal of the comparator 20 to the signal voltage of the data signal Source received in the N-th image frame through charge discharge.

Referring to fig. 6, fig. 6 shows that the micro integrated circuit corresponding to the same pixel receives the enable signal of the scan signal Gate in two adjacent image frames, and the enable signal may be a high level signal. In the previous image frame, when receiving the enabling signal of the scan signal Gate, the micro integrated circuit may introduce the data signal Source output by the data signal line into one of the energy storage units of the energy storage module 10 for charging; in the latter image frame, the energy storage unit may discharge to the comparator 20, and at this time, when the micro integrated circuit receives the enable signal of the scan signal Gate, the data signal Source output by the data signal line may be introduced into another energy storage unit of the energy storage module 10 for charging.

It can be understood that, in the two image frames, if there is a difference in brightness at the image position corresponding to the light emitting pixel, the signal voltages of the data signal Source sequentially introduced by the micro integrated circuit will also have a difference.

In some embodiments, the first power terminal of the comparator 20 is connected to a first power signal line, the second power terminal of the comparator 20 is connected to a second power signal line, the first terminal of the comparator 20 is connected to the energy storage module 10, and the second comparison terminal of the comparator 20 is connected to a reference signal Sweep line.

The comparator 20 may receive the data signal Source released by the energy storage module 10 and the reference signal Sweep output by the reference signal Sweep line through two comparison terminals, respectively, and compare the signal voltage of the data signal Source with the signal voltage of the reference signal Sweep.

The comparator 20 may output an enable signal when the signal voltage of the data signal Source is less than the signal voltage of the reference signal Sweep; the comparator 20 may output a disable signal when the signal voltage of the data signal Source is greater than the signal voltage of the reference signal Sweep.

It will be appreciated that the comparator 20 may also output an enable signal when the data signal Source is greater than the reference signal Sweep and a disable signal when the data signal Source is less than the reference signal Sweep, without limitation.

A control terminal of the constant current switch 30 may be connected to an output terminal of the comparator 20 to receive an enable signal or a disable signal output from the comparator 20.

The constant current switch 30 may have a first terminal connected to a first power signal line, a second terminal connected to a first electrode of the light emitting element L, and a second electrode of the light emitting element L connected to a second power signal line.

The constant current switch 30 may be turned on upon receiving the enable signal to supply a constant driving current to the first electrode of the light emitting element L. When the constant current switch 30 is turned on, the first and second poles of the light emitting element L are connected to the first and second power signal lines, respectively, and emit light under the driving of the first and second power signals.

As an alternative embodiment, the constant current switch 30 may be a constant current circuit of a voltage regulator, a constant current circuit of a two-diode, a constant current circuit of a triode, etc. formed by a transistor equivalent, which may connect the light emitting element L with a power supply signal and supply a constant driving current to the light emitting element L when receiving an enable signal output from the comparator 20.

As an alternative embodiment, the constant current switch 30 may also be formed by a comparator module and a constant current source, where one input end of the comparator module is connected to the loop where the constant current source is located to detect the node voltage of the loop where the constant current source is located, and the other input end of the comparator module is connected to the loop where the light emitting element L is located to detect the node voltage of the loop where the light emitting element L is located. By providing suitable resistive devices in the loop, the loop current of both loops can be determined from the node voltages detected at the two inputs. The output end of the comparator can be communicated with a switch of a loop where the light-emitting element L is located, and when the comparator detects that the node voltage of the loop where the light-emitting element L is located is higher than the node voltage of the loop where the constant current source is located, the loop where the light-emitting element L is located can be disconnected, so that the current of the loop where the light-emitting element L is located is reduced, and the light-emitting element L receives constant driving current.

In some embodiments, the reference signal Sweep may be a periodic signal.

The signal period of the reference signal Sweep may be consistent with the frame period of the light-emitting frame, or may be an integer number of signal periods of the reference signal Sweep corresponding to a single light-emitting frame.

The signal voltage variation of the reference signal Sweep may be linearly varied within a single period of the reference signal Sweep. I.e. the reference signal Sweep may be a linearly increasing variation or a linearly decreasing variation of the signal voltage within a single period.

Taking an example in which the reference signal Sweep linearly decreases and varies within a single signal period, since the signal voltage of the data signal Source received by the comparator 20 remains unchanged within a single light-emitting frame, the signal voltage of the reference signal Sweep is higher than the signal voltage of the data signal Source at the beginning of the signal period, and at this time the comparator 20 may output a disable signal.

When the signal voltage of the reference signal Sweep is linearly decreased in a single signal period, there is a time node after which the signal voltage of the reference signal Sweep is lower than the signal voltage of the data signal Source and the disable signal output from the comparator 20 is converted into an enable signal such that the signal voltage of the reference signal Sweep coincides with the signal voltage of the data signal Source.

During a single period of the reference signal Sweep, the comparator 20 will output a disable signal between the period start node and the time node; between the time node and the end-of-cycle node, the comparator 20 outputs an enable signal. Accordingly, the comparator 20 may sequentially output the disable signal and the enable signal in a single period of the reference signal Sweep, and form the PWM signal. The ratio of the time period of the time phase and the period end node to the single period of the reference signal Sweep is the duty ratio of the PWM signal. By adjusting the signal voltage of the data signal Source, the time node at which the signal voltage of the reference signal Sweep and the data signal Source are consistent can be adjusted, thereby adjusting the duty ratio of the PWM signal.

It can be appreciated that since the signal period of the reference signal Sweep is included in an integer number within a single light-emitting frame, the duty ratio of the PWM signal in the single signal period of the reference signal Sweep is the duty ratio of the enable signal in the single light-emitting frame. The constant current switch 30 may drive the light emitting element L to emit light when receiving an enable signal, and the duty ratio of the enable signal in a single light emitting frame is the duty ratio of the light emitting time.

Referring to fig. 7, in some embodiments, the reference signal Sweep may be a triangular wave signal.

As shown in fig. 7, taking the triangular wave signal with linearly decreasing signal voltage as an example, in a single period of the triangular wave signal, the signal voltage of the triangular wave signal is linearly decreased, and at a certain time node the signal voltage is decreased to coincide with the signal voltage of the data signal Source. The comparator 20 outputs an enable signal between the time node and the end-of-cycle node in a single cycle. By adjusting the signal voltage of the data signal Source output from the data signal line, the time node at which the reference signal Sweep and the signal voltage of the data signal Source are kept identical can be adjusted, thereby adjusting the duty ratio of the PWM signal composed of the enable signal and the disable signal output from the comparator 20 in a single period of the triangular wave signal.

As an alternative embodiment, as shown in fig. 7, when increasing the signal voltage of the data signal Source, a time node at which the reference signal Sweep is consistent with the signal voltage of the data signal Source may be advanced to increase the duty ratio of the PWM signal output from the comparator 20; when the signal voltage of the data signal Source is reduced, the time node at which the reference signal Sweep is consistent with the signal voltage of the data signal Source may be shifted back to reduce the duty ratio of the PWM signal output from the comparator 20. For example, fig. 7 shows that at two data signals Source with different voltage levels, the reference signal Sweep and the signal voltage of the data signal Source keep identical at the time nodes N1 and N2, respectively. It will be appreciated that the time node will move forward when the signal voltage of the data signal Source increases and will move backward when the signal voltage of the data signal Source decreases. By adjusting the signal voltage of the data signal Source, the duty ratio of the enable signal in the PWM signal output by the comparator 20 can be adjusted.

With continued reference to fig. 7, as an alternative embodiment, the first control signal and the second control signal of the control signal SEL may be a high level signal and a low level signal, respectively, in two light-emitting frames. That is, in the two light-emitting frames, when the control signal SEL is a high level signal, the first control signal is outputted, and at this time, the first energy storage unit 11 receives the data signal Source, and the second energy storage unit 12 releases the data signal Source to the comparator 20; when the control signal SEL is a low level signal, the second control signal is outputted, and the second energy storage unit 12 receives the data signal Source, and the first energy storage unit 11 releases the data signal Source to the comparator 20.

Referring to fig. 7 to 8, in some embodiments, the signal period of the reference signal Sweep may be consistent with the frame period of the light-emitting frame, or the frame period of the light-emitting frame may be set to be an integer multiple of the signal period of the reference signal Sweep.

As shown in fig. 7, taking an example in which the signal period of the reference signal Sweep coincides with the frame period of the light-emitting frame, in a single light-emitting frame, the reference signal Sweep includes only one signal period, and there is only one time node at which the signal voltages of the reference signal Sweep and the data signal Source remain coincident. Before the time node, the comparator 20 outputs a disable signal; after the time node, the comparator 20 outputs an enable signal. That is, the PWM signal output from the comparator 20 contains one pulse within a single light emission frame.

As shown in fig. 8, when the frame period of the light-emitting frame is an integer multiple of the signal period of the reference signal Sweep, there is one time node in each period of the reference signal Sweep such that the signal voltage of the reference signal Sweep and the data signal Source are kept identical. Thus, in each period of the reference signal Sweep, the comparator 20 outputs one pulse of the PWM signal. When the frame period of the light-emitting frame is n times the signal period of the reference signal Sweep, the PWM signal output by the comparator 20 within a single light-emitting frame includes n pulses.

As an alternative embodiment, a timing chart of the PWM signal output by the comparator 20 when the frame period of the light-emitting frame is 5 times the signal period of the reference signal Sweep is shown in fig. 8. As shown in fig. 8, the PWM signal output from the comparator 20 may include 5 pulses in a single light-emitting frame. That is, the pulse number of the PWM signal outputted from the comparator 20 is the ratio of the frame period of the light-emitting frame to the signal period of the reference signal Sweep within a single light-emitting frame.

The PWM signal output from the comparator 20 includes a low level signal and a high level signal. With the high level signal as the enable signal, the constant current switch 30 will not supply the light emitting element L with the light emitting current when receiving the low level signal. If the frame period of the light-emitting frame coincides with the signal period of the reference signal Sweep, the PWM signal outputted from the comparator 20 includes only one continuous low level signal and one continuous high level signal in a single light-emitting frame as shown in fig. 7. When the continuous time of the low level signal is long, the time of continuously not emitting light of the light emitting element L reaches the minimum time perceived by human eyes, so that a user perceives that the display picture flickers. That is, when the comparator 20 outputs the continuous low level signal for a long time, the display panel will generate a flicker phenomenon.

In order to avoid that the comparator 20 continuously outputs the low level signal for too long in a single light-emitting frame, so that a user perceives that the display screen is flickering, the signal period of the reference signal Sweep can be reduced, and the signal frequency of the reference signal Sweep can be increased, so that the duration of the low level signal of each pulse in the PWM signal output by the comparator 20 can be shortened, and the flickering phenomenon of the display panel can be improved.

It will be appreciated that the signal period of the PWM signal output by the comparator 20 is consistent with the signal period of the reference signal Sweep, and the signal frequency of the PWM signal is also consistent with the signal frequency of the reference signal Sweep.

An embodiment of the present application further provides a micro integrated circuit assembly, and fig. 9 shows a schematic structural diagram of the micro integrated circuit assembly provided in an embodiment of the present application. The micro-integrated circuit assembly can drive the light-emitting unit to emit light, and the light-emitting unit comprises light-emitting elements L with at least three light-emitting colors.

The micro-integrated circuit assembly may include at least three micro-integrated circuits, which may be the micro-integrated circuits provided in the above-described embodiments. The micro integrated circuit assembly may further comprise at least three data signal inputs and a scan signal input.

The number of micro integrated circuits included in the micro integrated circuit assembly may be identical to the number of light emitting elements L in a single light emitting unit. That is, the micro integrated circuits included in the micro integrated circuits are in one-to-one correspondence with the light emitting elements L in the light emitting units, and the output ends of the respective micro integrated circuits are respectively connected with the corresponding light emitting elements L and respectively provide driving currents for the corresponding light emitting elements L so as to respectively drive the corresponding light emitting elements L to emit light.

The data signal input ends in the micro integrated circuit assembly are respectively in one-to-one correspondence with the micro integrated circuits, and each data signal input end is respectively connected with the energy storage module 10 of the corresponding micro integrated circuit.

Each data signal input end is also connected with a corresponding data signal line respectively, and can introduce the data signal Source output by the corresponding data signal line into a corresponding micro integrated circuit.

The scan signal input terminal may be connected to a scan signal line, and each of the micro integrated circuits in the micro integrated circuit assembly may receive the same scan signal Gate through the scan signal input terminal. That is, the light emitting elements L driven by the plurality of micro integrated circuits may be the light emitting elements L located in the same row.

As shown in fig. 9, taking an example in which the light emitting unit includes three light emitting elements L having different light emitting colors, the micro integrated circuit assembly may include three micro integrated circuits, three data signal input terminals, and a scan signal input terminal.

The scanning signal input end is connected with the scanning signal lines into the three micro-integrated circuits, and when the scanning signal lines output enabling signals of the scanning signals Gate, the three micro-integrated circuits can acquire different data signals Source through the three data signal input ends respectively under the enabling signals of the scanning signals Gate. Each micro integrated circuit can drive the corresponding light emitting element L to emit light according to the corresponding data signal Source.

The three light emitting elements L having different light emission colors included in the light emitting unit may be a red light emitting element L, a green light emitting element L, and a blue light emitting element L, respectively.

In other embodiments, the light emitting unit may further include light emitting elements L of other colors, for example, white light emitting elements L or yellow light emitting elements L, or the like. It will be appreciated that when the light emitting unit comprises four light emitting elements L of different colors of light emission, the micro integrated circuit assembly should comprise four micro integrated circuits and four data signal inputs.

As an alternative embodiment, the light emitting elements L of the same light emitting color in the light emitting unit may be plural, for example, the light emitting unit may include four light emitting elements L of three light emitting colors, or seven light emitting elements L of four light emitting colors, or the like. When the light emitting unit includes four light emitting elements L, the micro integrated circuit assembly should include four micro integrated circuits and four data signal inputs; whereas when the light emitting unit comprises seven light emitting elements L, the micro integrated circuit assembly should comprise seven micro integrated circuits and seven data signal inputs.

In some embodiments, the micro integrated circuit assembly may further include a first power signal terminal, a second power signal terminal, a reference signal input terminal, and a control signal input terminal.

The first power signal terminal may be connected to the first power signal line and provide a first power signal to each of the micro integrated circuits in the micro integrated circuit assembly.

The second power signal terminal may be connected to the second power signal line and provide a second power signal to each of the micro integrated circuits in the micro integrated circuit assembly.

The control power signal terminal may be connected to a control signal line and provide a control signal SEL to each of the micro integrated circuits in the micro integrated circuit assembly.

The reference power signal terminal may be connected to a reference signal Sweep line and provide the reference signal Sweep for each of the micro integrated circuits in the micro integrated circuit assembly.

In the micro integrated circuit assembly, the respective micro integrated circuits may share the same reference signal Sweep, the control signal SEL, the first power signal, and the second power signal. Thus, a reference signal input, a control signal input, a first power signal terminal, and a second power signal terminal may be provided in the micro integrated circuit assembly. The reference signal input may receive a reference signal Sweep and provide the same reference signal Sweep for each micro integrated circuit. Likewise, the control signal input terminal may provide the same control signal SEL for each of the micro-integrated circuits, the first power signal terminal may provide the same first power signal for each of the micro-integrated circuits, and the second power signal terminal may provide the same second power signal for each of the micro-integrated circuits.

In order to drive the light emitting element L, a data signal input terminal, a scan signal input terminal, an output terminal, a reference signal input terminal, a control signal input terminal, a first power signal terminal, and a second power signal terminal are required to be provided if a single micro integrated circuit is integrated into a chip assembly. That is, a chip assembly containing a single micro integrated circuit requires 7 terminals to be provided.

In the example of fig. 10, if three micro-integrated circuits are integrated into a chip assembly, the three micro-integrated circuits may share the same reference signal input terminal, control signal input terminal, first power signal terminal and second power signal terminal, and the micro-integrated circuit assembly may include 3 data signal input terminals, scanning signal input terminals, 3 output terminals, reference signal input terminals, control signal input terminals, first power signal terminal and second power signal terminal. That is, a chip assembly including three micro integrated circuits needs to be provided with 11 terminals.

As can be seen from the above comparison, the integration of a plurality of micro-integrated circuits with the chip assembly can effectively reduce the number of terminals required for driving the single light emitting element L, thereby reducing the design size of the chip assembly.

The embodiment of the application also provides a micro integrated circuit assembly, which can drive the M x N light emitting units arranged in an array to emit light, wherein each light emitting unit can comprise at least three light emitting elements with light emitting colors.

The micro-integrated circuit device may include a×n×m micro-integrated circuits, a×n data signal inputs, and M scan signal inputs.

a×n×m micro integrated circuits may be provided as the micro integrated circuits in the above embodiments. a may be the number of light emitting elements in a single light emitting unit, and a is a positive integer greater than or equal to 3 since at least three light emitting elements of different light emitting colors are included in a single light emitting unit.

A single micro-integrated circuit assembly may drive m×n light emitting units arranged in an array, where M, N may be an integer greater than or equal to 1, respectively. That is, a single micro integrated circuit may drive only one light emitting unit, or may drive 2*3 total of 6 light emitting units, 4*4 total of 16 light emitting units, or the like.

The a×n×m micro integrated circuits in the micro integrated circuit assembly may be connected to the light emitting elements in each light emitting unit in a one-to-one correspondence manner, and provide driving currents for the corresponding light emitting elements.

The data signal input terminals of a×n may be respectively connected to the data signal lines of a×n, and each data signal terminal is connected to the micro-integrated circuits corresponding to the light emitting elements in the same column, and provides data signals for the micro-integrated circuits in the same column.

The M scanning signal input ends are respectively connected with the M scanning signal lines, and each scanning signal input end is respectively connected with the micro-integrated circuits corresponding to the light emitting elements in the same row and provides scanning signals for the micro-integrated circuits in the same row.

As an alternative embodiment, the micro-integrated circuit assembly is used to drive 4*4 light emitting units arranged in an array, where each light emitting unit includes three light emitting elements with different colors, and the chip assembly integrated by the micro-integrated circuit assembly may include 12 data signal input ends, 4 scan signal input ends, 48 output ends, 1 reference signal input end, 1 control signal input end, 1 first power signal end and 1 second power signal end. That is, the chip assembly needs to be provided with 68 terminals.

It can be appreciated that when the micro integrated circuit assembly integrates a plurality of micro integrated circuits, the plurality of micro integrated circuits can partially or completely share the reference signal, the control signal, the first power signal, the second power signal, the data signal and the scan signal, thereby saving the number of terminals required by the integrated chip assembly and reducing the design size of the chip assembly.

The embodiment of the application also provides a display panel, which can include X, Y and a plurality of micro integrated circuit components.

In the light emitting units arranged in an x×y array, each light emitting unit may include at least three light emitting elements emitting light colors, and each micro integrated circuit assembly may include a plurality of micro integrated circuits, which may be the micro integrated circuits provided in the foregoing embodiments.

A single micro-integrated circuit may drive a single light emitting element. That is, the total number of light emitting elements in the x×y arrayed light emitting units is consistent with the total number of micro integrated circuits in the plurality of micro integrated circuit assemblies.

It will be appreciated that the number of micro-integrated circuits included in each of the plurality of micro-integrated circuit assemblies may be the same or different.

In some embodiments, the light emitting elements corresponding to each of the above-mentioned micro integrated circuit assemblies may be located in the same layer as the micro integrated circuits in the micro integrated circuit assemblies.

Taking a single micro integrated circuit assembly as an example, as shown in fig. 11, RGB is the front projection of light emitting elements with different light emission colors on a display panel, and micro ic is the front projection of the micro integrated circuit assembly on the display panel. The front projection of any one of the light emitting elements in the plurality of light emitting elements corresponding to the micro-integrated circuit assembly is not overlapped with the front projection of the micro-integrated circuit assembly.

As an alternative embodiment, in a medium-sized or large-sized display panel, the pitch between the light emitting elements is larger, and the micro integrated circuit assembly may be located at the same layer as the light emitting elements and disposed in the pitch space between the respective light emitting elements.

In some embodiments, the light emitting elements corresponding to each of the above-mentioned micro integrated circuit assemblies may be located at different layers from the micro integrated circuits in the micro integrated circuit assemblies.

Taking a single micro-integrated circuit assembly as an example, there is a partial overlap between the orthographic projection of at least one light emitting element and the orthographic projection of the micro-integrated circuit assembly among the corresponding plurality of light emitting elements.

It will be appreciated that for small and medium sized display panels with small pitches between the light emitting elements, the micro integrated circuit assembly cannot be disposed within the pitch space of the light emitting elements. In this case, the micro integrated circuit assembly may be disposed in a different layer from the light emitting element. In order to increase space utilization and reduce the size of the display panel, there may be a partial overlap between the micro integrated circuit assembly and the light emitting element.

As shown in fig. 12, in order to save panel space, a front projection micro of a micro integrated circuit assembly on a display panel may be provided to overlap with a front projection RGB of each light emitting element correspondingly connected and driven on the display panel.

Referring to fig. 13, in some embodiments, the display Panel may further include a substrate Panel, and the micro integrated circuit assembly may be located between the substrate Panel and the light emitting element in a first direction perpendicular to the substrate Panel.

In order to avoid the micro-integrated circuit assembly affecting the outgoing line when the light emitting element emits light, the micro-integrated circuit assembly may be disposed between the substrate Panel and the light emitting element. In this case, the terminals of the micro integrated circuit assembly may be disposed on a side facing the light emitting element so as to be connected to the respective signal lines and the light emitting element.

The embodiment of the application also provides a display device, please refer to fig. 14, which may be a PC, a television, a display, a mobile terminal, a tablet PC, a wearable device, etc., and the display device may include the display panel provided in the embodiment of the application.

The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and it will be apparent to those skilled in the art that numerous modifications, adaptations or variations can be made thereto and that the above-described features can be combined in a suitable manner without departing from the principles of the present application; such modifications, variations, or combinations, or the direct application of the concepts and aspects of the present application to other applications without modification, are intended to be within the scope of the present application.

Claims

1. A micro-integrated circuit, comprising:

the comparator is used for receiving a reference signal and a data signal released by the energy storage module and outputting an enabling signal or a non-enabling signal according to signal voltages of the data signal and the reference signal; the reference signal is a voltage conversion signal, and the signal voltage variation range of the data signal is between the maximum voltage and the minimum voltage of the reference signal;

and the constant current switch is used for providing driving current for the light-emitting element when receiving the enabling signal.

2. According to the weights _T1 Is favorable to _T2 Let 1 stand ^T The said ³ Is characterized in that the micro-integrated circuit further comprises:

a data writing transistor, said ^T Number of digits ⁴ The gate of the data writing transistor receives a scanning signal, the first pole of the data writing transistor is connected with the data signal line, and the second pole of the data writing transistor is connected with the data signal lineThe energy storage module is connected, and the data writing transistor is used for introducing data signals to the energy storage module.

3. The micro integrated circuit of claim 2, wherein the energy storage module comprises:

The first energy storage unit is connected with the second pole of the data writing transistor and is also connected with the first comparison end of the comparator;

the second energy storage unit is connected with a second pole of the data writing transistor and is also connected with a first comparison end of the comparator;

the control end of the first energy storage unit and the control end of the second energy storage unit are connected with a control signal line and are used for receiving a first control signal and a second control signal which are alternately output;

the first energy storage unit is used for being communicated with the data writing transistor when receiving a first control signal; when receiving a second control signal, communicating with the comparator;

the second energy storage unit is used for being communicated with the comparator when receiving the first control signal; and when receiving a second control signal, communicating with the data writing transistor.

4. The micro integrated circuit of claim 3, wherein the first energy storage unit comprises:

the first end of the first energy storage capacitor is electrically connected with the second power supply signal line;

A first charge transistor, a first pole of which is connected with a second pole of the data writing transistor, a second pole of which is connected with a second end of the first energy storage capacitor, and a grid of which is connected with the control signal line;

a first discharge transistor, a first pole of which is connected with a first comparison end of the comparator, a second pole of which is connected with a second end of the first energy storage capacitor, and a grid electrode of which is connected with the control signal line;

one of the first charge transistor and the first discharge transistor is an N-type transistor, and the other is a P-type transistor.

5. The micro integrated circuit of claim 4, wherein the second energy storage unit comprises:

the first end of the second energy storage capacitor is electrically connected with the second power supply signal line;

a first electrode of the second charging transistor is connected with a second electrode of the data writing transistor, a second electrode of the second charging transistor is connected with a second end of the first energy storage capacitor, and a grid electrode of the second charging transistor is connected with the control signal line;

The first electrode of the second discharge transistor is connected with the first comparison end of the comparator, the second electrode of the second discharge transistor is connected with the second end of the first energy storage capacitor, and the grid electrode of the second discharge transistor is connected with the control signal line;

the second charging transistor and the first discharging transistor are of the same type; the second discharge transistor is the same type of transistor as the first charge transistor.

6. The micro integrated circuit of claim 3, wherein the first energy storage unit and the second energy storage unit are configured to receive the first control signal output by the control signal line in an nth image frame and receive the second control signal output by the control signal line in an n+1th image frame.

7. The micro integrated circuit of claim 1, wherein a first power supply terminal of the comparator is connected to a first power supply signal line, a second power supply terminal of the comparator is connected to a second power supply signal line, a first comparison terminal of the comparator is connected to the energy storage module, and a second comparison terminal of the comparator is connected to a reference signal line;

The comparator is used for outputting an enabling signal when the signal voltage of the data signal is smaller than the signal voltage of the reference signal; outputting a disable signal when a signal voltage of the data signal is greater than a signal voltage of the reference signal;

the control end of the constant current switch is connected with the output end of the comparator, the first end of the constant current switch is connected with a first power signal wire, the second end of the constant current switch is connected with a first pole of the light-emitting element, and a second pole of the light-emitting element is connected with a second power signal wire;

the constant current switch is used for providing driving current for the first pole of the light-emitting element when receiving an enabling signal.

8. The micro integrated circuit of claim 7, wherein the reference signal is a periodic signal;

in a single period of the reference signal, the signal voltage of the reference signal is linearly changed, and the enable signal and the disable signal output by the comparator form a pulse width modulation PWM signal.

9. The micro integrated circuit of claim 8, wherein the reference signal is a triangular wave signal.

10. The micro integrated circuit of claim 7, wherein the signal period of the reference signal coincides with the frame period of the light-emitting frame, or the frame period of the light-emitting frame is an integer multiple of the signal period of the reference signal;

The signal frequency of the PWM signal is consistent with the signal frequency of the reference signal.

11. A micro-integrated circuit assembly for driving a light emitting unit comprising light emitting elements of at least three colors of emitted light;

the micro integrated circuit assembly includes:

at least three micro-integrated circuits, said micro-integrated circuits being as claimed in any one of claims 1-10; the output end of the micro integrated circuit is connected with the corresponding light-emitting element and is used for providing driving current for the corresponding light-emitting element;

12. The micro integrated circuit assembly of claim 11, wherein the micro integrated circuit assembly further comprises:

the first power supply signal end is connected with the first power supply signal wire and is used for providing a first power supply signal for each micro integrated circuit;

the second power supply signal end is connected with the second power supply signal wire and is used for providing a second power supply signal for each micro integrated circuit;

The control signal input end is connected with the control signal line and is used for providing control signals for all the micro integrated circuits;

and the reference signal input end is connected with the reference signal line and is used for providing reference signals for all the micro integrated circuits.

13. The micro integrated circuit assembly is characterized by being used for driving M x N light emitting units arranged in an array, wherein the light emitting units comprise light emitting elements with at least three light emitting colors; the micro integrated circuit assembly includes:

a x N x M micro-integrated circuits, the micro-integrated circuits being as claimed in any one of claims 1-10; the output end of the micro integrated circuit is connected with the corresponding light-emitting element and is used for providing driving current for the corresponding light-emitting element; wherein a is the number of light-emitting elements in a single light-emitting unit, a is more than or equal to 3, M and N are integers more than or equal to 1;

14. A display panel, the display panel comprising:

X is Y luminous units arranged in an array manner; the light emitting unit comprises light emitting elements with at least three light emitting colors;

a plurality of micro-integrated circuit assemblies comprising a plurality of micro-integrated circuits, the micro-integrated circuits being the micro-integrated circuits of any one of claims 1-10; wherein a single one of the micro-integrated circuits is used to drive a single light-emitting element.

15. The display panel of claim 14, wherein the plurality of light emitting elements corresponding to the micro-integrated circuit assembly are on the same layer as the micro-integrated circuit;

and in the plurality of light emitting elements corresponding to the micro integrated circuit component, the orthographic projection of any one light emitting element and the orthographic projection of the micro integrated circuit component are not overlapped.

16. The display panel of claim 14, wherein the plurality of light emitting elements corresponding to the micro-integrated circuit assembly are located on different layers than the micro-integrated circuit assembly;

in the plurality of light emitting elements corresponding to the micro-integrated circuit assembly, the orthographic projection of at least one light emitting element is partially overlapped with the orthographic projection of the micro-integrated circuit assembly.

17. The display panel of claim 16, further comprising a substrate;

The micro integrated circuit is located between the substrate and the light emitting element in a first direction perpendicular to the substrate.

18. A display device comprising the display panel of any one of claims 14-17.