Display panel and display module

By introducing time-sharing control of driving circuits and backlight devices into the LCD display panel, the problems of difficulty in driving color light sources and difficulty in controlling grayscale brightness are solved, and efficient color display effect and process simplification are achieved.

CN120472841APending Publication Date: 2025-08-12HKC CORP LTD
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Patent Information

Application Number
CN202510728067.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-30
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

The existing LCD display panels have difficulty in circuit design when driving color light sources, and it is difficult to effectively control the grayscale and brightness of displays of different colors.

Method used

The driving circuit is adopted, including a sampling trigger module and a control module, and the path of the pixel unit is controlled to be turned on by receiving display driving signals of different colors in time, and the pixel unit is driven by a data voltage, and the light emitting element in the backlight device emits red, green and blue light rays in time.

Benefits of technology

Effective control of grayscale and brightness of display in different colors is achieved, the display effect is improved, the manufacturing process is simplified, and the cost is reduced.

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Abstract

The invention provides a display panel and a display module, the display panel provided by the invention comprises a driving circuit for controlling a pixel unit, and the driving circuit comprises a sampling trigger module and a control module; the sampling trigger module comprises a write-in unit and a plurality of trigger units, the plurality of trigger units are respectively connected with the write-in unit, and data voltages corresponding to different colors of light are written in the sampling stage based on voltage write-in signals received by the write-in unit; the control module comprises a plurality of control units, the control units are connected with the trigger units, and the control units are used for being connected with the pixel units, receiving display driving signals of different colors in a time-sharing mode in a display period and controlling channels between the corresponding trigger units and the pixel units to be switched on based on the display driving signals. And driving the pixel unit by using the data voltage. The driving circuit can control display gray scales and display brightness of different colors, and the display effect is improved.
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Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display module. Background Art

[0002] Existing LCD (Liquid Crystal Display) technology is highly mature. It uses a non-self-luminous LCD panel with a white backlight, and uses progressive scanning to display images. This type of display panel requires a color filter layer to convert white light into colored light. Existing LCDs also convert white backlights into colored light sources, but these colored light sources are difficult to drive and present challenges in circuit design. Summary of the Invention

[0003] The present invention mainly provides a display panel and a display module, which can control the display grayscale and display brightness of different colors to improve the display effect.

[0004] To solve the above technical problems, the first technical solution adopted by the present invention is to provide a display panel, the display panel including a driving circuit for controlling pixel units, the driving circuit including:

[0005] Sampling trigger module and control module;

[0006] The sampling trigger module includes: a writing unit and multiple triggering units, wherein the multiple triggering units are respectively connected to the writing unit, and writes data voltages corresponding to different colors of light into the multiple triggering units based on the voltage writing signals received by the writing units during the sampling phase;

[0007] The control module includes: multiple control units, each of which is connected to a plurality of trigger units in a one-to-one correspondence, and each of which is used to connect to a pixel unit. The multiple control units receive display drive signals of different colors in a time-sharing manner within a display cycle, and control the conduction of the path between the corresponding trigger unit and the pixel unit based on the display drive signal, and drive the pixel unit using the data voltage written by the trigger unit.

[0008] In one embodiment, the plurality of trigger units include: a red light trigger unit, a green light trigger unit, and a blue light trigger unit; the red light trigger unit writes a red light data voltage, the green light trigger unit writes a green light data voltage, and the blue light trigger unit writes a blue light data voltage;

[0009] The multiple control units include: a red light control unit, a green light control unit and a blue light control unit;

[0010] The red light control unit is connected to the red light display driving signal input terminal and the red light trigger unit; the red light control unit controls the path between the red light trigger unit and the pixel unit in response to the red light display driving signal received by the red light display driving signal input terminal, and drives the pixel unit using the red light data voltage;

[0011] The green light control unit is connected to the green light display driving signal input terminal and the green light trigger unit; the green light control unit controls the path between the green light trigger unit and the pixel unit in response to the green light display driving signal received by the green light display driving signal input terminal, and drives the pixel unit using the green light data voltage;

[0012] The blue light control unit is connected to the blue light display driving signal input terminal and the blue light trigger unit; the blue light control unit controls the path between the blue light trigger unit and the pixel unit in response to the blue light display driving signal received by the blue light display driving signal input terminal, and drives the pixel unit using the blue light data voltage.

[0013] In one embodiment, the red light trigger unit includes: a red light trigger transistor and a first storage capacitor; a first channel end of the red light trigger transistor receives a red light data voltage, a second channel end of the red light trigger transistor is connected to a first end of the first storage capacitor and a red light control unit, a control end of the red light trigger transistor is connected to a write unit, and a second end of the first storage capacitor is connected to a common voltage end;

[0014] The red light control unit includes: a first red light control transistor and a second red light control transistor, the first path end of the first red light control transistor is connected to the red light display drive signal input end, the second path end of the first red light control transistor is connected to the control end of the second red light control transistor, the control end of the first red light control transistor is connected to the voltage writing end to receive the voltage writing signal; the first path end of the second red light control transistor is connected to the red light trigger transistor, and the second path end of the second red light control transistor is connected to the pixel unit.

[0015] In one embodiment, the green light trigger unit includes: a green light trigger transistor and a second storage capacitor; a first channel end of the green light trigger transistor receives a green light data voltage, a second channel end of the green light trigger transistor is connected to a first end of the second storage capacitor and a green light control unit, a control end of the green light trigger transistor is connected to a write unit, and a second end of the second storage capacitor is connected to a common voltage end;

[0016] The green light control unit includes: a first green light control transistor and a second green light control transistor, the first channel end of the first green light control transistor is connected to the green light display drive signal input end, the second channel end of the first green light control transistor is connected to the control end of the second green light control transistor, the control end of the first green light control transistor is connected to the voltage writing end to receive the voltage writing signal; the first channel end of the second green light control transistor is connected to the green light trigger transistor, and the second channel end of the second green light control transistor is connected to the pixel unit.

[0017] In one embodiment, the blue light trigger unit includes: a blue light trigger transistor and a third storage capacitor; a first channel end of the blue light trigger transistor receives a blue light data voltage, a second channel end of the blue light trigger transistor is connected to a first end of the third storage capacitor and a blue light control unit, a control end of the blue light trigger transistor is connected to a write unit, and a second end of the third storage capacitor is connected to a common voltage end;

[0018] The blue light control unit includes: a first blue light control transistor and a second blue light control transistor, the first channel end of the first blue light control transistor is connected to the blue light display drive signal input end, the second channel end of the first blue light control transistor is connected to the control end of the second blue light control transistor, the control end of the first blue light control transistor is connected to the voltage writing end to receive the voltage writing signal; the first channel end of the second blue light control transistor is connected to the blue light trigger transistor, and the second channel end of the second blue light control transistor is connected to the pixel unit.

[0019] In one embodiment, the write unit includes: a write transistor, the control end of the write transistor is connected to the voltage write end, receives the voltage write signal, the first path end of the write transistor is connected to the red light trigger unit, the green light trigger unit and the blue light trigger unit, and the second path end of the write transistor is connected to one of the red light display drive signal input end, the green light display drive signal input end and the blue light display drive signal input end.

[0020] In one embodiment, the display grayscale of the pixel unit is positively correlated with the pulse width of the display driving signal.

[0021] In one embodiment, a color filter is not provided in the display panel. The display panel further includes: a first polarizer, a second polarizer, and a liquid crystal assembly. The liquid crystal assembly is provided between the first polarizer and the second polarizer. The liquid crystal assembly includes:

[0022] A first substrate, a second substrate and a sealing frame arranged at the edges of the first substrate and the second substrate are arranged opposite to each other, the first substrate, the second substrate and the sealing frame form a closed accommodating cavity, liquid crystal molecules are arranged in the accommodating cavity, and a black matrix is arranged at a predetermined position of the liquid crystal molecules near the surface of the second substrate; wherein the driving circuit is arranged on the first substrate.

[0023] To solve the above technical problems, the first technical solution adopted by the present invention is: providing a display module, including: a display panel, the display panel including any of the display panels mentioned above; a backlight device, including a plurality of light-emitting elements arranged in an array.

[0024] In one embodiment, each light emitting element is configured to emit red, green, and blue light.

[0025] In one embodiment, during a display cycle, a plurality of light-emitting elements arranged in an array are defined as a plurality of light-emitting subareas, each light-emitting subarea including a red light subarea, a green light subarea, and a blue light subarea, and the red light subarea, the green light subarea, and the blue light subarea emit red light, green light, and blue light in a time-sharing manner during a display cycle; wherein, within each light-emitting subarea, the red light subarea, the green light subarea, and the blue light subarea are arranged along a first direction; or the red light subarea, the green light subarea, and the blue light subarea are arranged along a second direction; and the first direction and the second direction intersect;

[0026] In adjacent display cycles, the positions of the defined red light partitions, green light partitions, and blue light partitions are different.

[0027] The beneficial effects of the present invention are as follows: Unlike the prior art, the display panel provided by the present invention includes a drive circuit for controlling pixel units. The drive circuit includes: a sampling trigger module and a control module. The sampling trigger module is used to write data voltages during the sampling phase; the control module is connected to the sampling trigger module and is used to connect to the pixel units. The control module receives display drive signals of different colors in a time-sharing manner within a display cycle, and controls the conduction of the path between the sampling trigger module and the pixel units based on the display drive signals, thereby driving the pixel units using the data voltages. The drive circuit of the present application can control the display grayscale and display brightness of different colors, thereby improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a first embodiment of a display panel provided in this application;

[0030] Figure 2 A schematic structural diagram of a second embodiment of a display panel provided in this application;

[0031] Figure 3 A schematic structural diagram of an embodiment of a driving circuit in a display panel provided by the present application;

[0032] Figure 4 for Figure 3 A timing diagram of a driving circuit in the display panel shown;

[0033] Figure 5 A schematic structural diagram of a third embodiment of a display panel provided in this application;

[0034] Figure 6 A schematic structural diagram of an embodiment of a display module provided in this application;

[0035] Figure 7a 1 is a schematic diagram of the distribution of light-emitting elements in a display module according to a first embodiment of the present application;

[0036] Figure 7b yes Figure 7a The schematic diagram of the light emitting element in the first time period is shown;

[0037] Figure 7c yes Figure 7a A schematic diagram of the light emitting element in the second time period is shown;

[0038] Figure 7d yes Figure 7a A schematic diagram of the light emitting element emitting light in a third time period is shown;

[0039] Figure 8a 2 is a schematic diagram of the distribution of light-emitting elements in a display module according to a second embodiment of the present application;

[0040] Figure 8b yes Figure 8a The schematic diagram of the light emitting element in the first time period is shown;

[0041] Figure 8c yes Figure 8a A schematic diagram of the light emitting element in the second time period is shown;

[0042] Figure 8d yes Figure 8a The diagram shows the light emitting element emitting light in the third time period.

[0043] Explanation of reference numerals: display panel 10, driving circuit 20, sampling trigger module 21, control module 22, writing unit 210, triggering unit 211, light-emitting element 110, red light triggering unit 211_R, green light triggering unit 211_G, blue light triggering unit 211_B, control unit 220, red light control unit 220_R, green light control unit 220_G, blue light control unit 220_B, red light display driving signal EM_R, blue light display driving signal EM_B, green light display driving signal EM_G, scanning signal Scan, red light display driving circuit GOA_R, green light display driving circuit GOA_G, blue light display driving circuit GOA_B, voltage writing signal SW, red light data voltage Data_R, green light data voltage Data_G, blue light data voltage Data_B, writing transistor T1, first red light control transistor T2, second red light control transistor T3 control transistor T6, first green light control transistor T3, second green light control transistor T8, first blue light control transistor T4, second blue light control transistor T10, red light triggering transistor T5, green light triggering transistor T7, blue light triggering transistor T9, first storage capacitor C1, second storage capacitor C2, third storage capacitor C3, common voltage terminal VCOM, display period T, first time period t1, second time period t2, third time period t3, sampling phase t0, liquid crystal component 50, first polarizer 51, second polarizer 52, first substrate 501, second substrate 502, sealing frame 503, black matrix 504, liquid crystal molecules 506, backlight device 100, backlight backplane 80, reflector 81, light guide plate 82, diffuser 83, light-emitting subarea 111, red light subarea 111_R, green light subarea 111_G, blue light subarea 111_B, first direction X, second direction Y. DETAILED DESCRIPTION

[0044] The following describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0045] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0046] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship. Furthermore, "many" in this document means two or more than two.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0048] Before further describing the embodiments of the present application in detail, the nouns and terms involved in the embodiments of the present application are explained. The nouns and terms involved in the embodiments of the present application are subject to the following interpretations.

[0049] In order to enable those skilled in the art to better understand the technical solution of the present invention, the display panel provided by the present invention is described in further detail below with reference to the accompanying drawings and specific embodiments.

[0050] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the display panel provided by the present application. The display panel 10 of the present application is applied to a liquid crystal display module. The display panel of the present application is provided with pixel units, and the display panel's driving circuit is used to control the pixel units. The liquid crystal display module also includes a backlight device, which includes a backlight module and a backlight driving unit. The backlight module includes light-emitting elements, and the pixel units are capable of changing the grayscale of the light emitted by the light-emitting elements.

[0051] Specifically, the light-emitting elements are provided in the backlight device and are colored LED lamp beads. For example, the light-emitting elements include a red light-emitting element, a green light-emitting element, and a blue light-emitting element. During a display cycle T of the display panel, the red light-emitting element emits red light during a first time period t1, the green light-emitting element emits green light during a second time period t2, and the blue light-emitting element emits blue light during a third time period t3.

[0052] In another embodiment, the light-emitting element may be a light-emitting chip that can emit red, green, and blue light. Within a display cycle T, the light-emitting element emits red light within a first time period t1, emits green light within a first time period t2, and emits blue light within a third time period t3. Furthermore, in this embodiment, since all light-emitting elements can emit red, green, and blue light, within a display cycle, all light-emitting elements can be defined as multiple light-emitting sub-areas, each light-emitting sub-area including a red light sub-area, a green light sub-area, and a blue light sub-area. Within a display cycle T, the light-emitting elements within the red light sub-area emit red light within the first time period t1, the light-emitting elements within the green light sub-area emit green light within the second time period t2, and the light-emitting elements within the blue light sub-area emit blue light within the third time period t3.

[0053] In one embodiment, in two adjacent display periods, the red light partition, the green light partition and the blue light partition are at the same position. In another embodiment, in two adjacent display periods, the red light partition, the green light partition and the blue light partition are at different positions.

[0054] Furthermore, during display, it is also necessary to control the display grayscale of red light, green light, and blue light. In order to achieve the control of the display grayscale, the present application provides a display panel 10, which is provided with a driving circuit 20.

[0055] See also Figure 1 The driver circuit 20 includes a sampling trigger module 21 and a control module 22. The sampling trigger module 21 is used to write the data voltage during the sampling phase. The control module 22 is connected to the sampling trigger module 21 and is connected to the pixel unit. During a display cycle, the control module 22 receives display drive signals of different colors in a time-sharing manner and controls the path between the sampling trigger module 21 and the pixel unit based on the display drive signal, thereby driving the pixel unit with the data voltage.

[0056] In one specific embodiment, during the sampling phase, the sampling trigger module 21 writes a data voltage. During a display cycle T of the display phase, the control module 22 receives a red display drive signal during a first time period t1, controls the path between the sampling trigger module 21 and the pixel unit to be conductive based on the red display drive signal, and drives the pixel unit using the written data voltage. The control module 22 receives a green display drive signal during a second time period t2, controls the path between the sampling trigger module 21 and the pixel unit to be conductive based on the green display drive signal, and drives the pixel unit using the written data voltage. The control module 22 receives a blue display drive signal during a third time period t3, controls the path between the sampling trigger module 21 and the pixel unit to be conductive based on the blue display drive signal, and drives the pixel unit using the written data voltage.

[0057] Further, combined Figure 2 and Figure 3 The sampling trigger module 21 includes a writing unit 210 and multiple triggering units 211. The multiple triggering units 211 are respectively connected to the writing unit 210. In the sampling phase, the data voltages Data corresponding to different colors of light are written into the multiple triggering units 211 based on the voltage writing signal SW received by the writing unit 210.

[0058] In a specific embodiment, if Figure 3 As shown, the multiple trigger units 211 include a red light trigger unit 211_R, a green light trigger unit 211_G and a blue light trigger unit 211_B; the red light trigger unit 211_R writes a red light data voltage Data_R, the green light trigger unit 211_G writes a green light data voltage Data_G, and the blue light trigger unit 211_B writes a blue light data voltage Data_B.

[0059] The control module 22 includes multiple control units 220, each connected to a plurality of trigger units 211 in a one-to-one correspondence. Each control unit 220 is configured to connect to a pixel unit. Within a display cycle T, each control unit 220 receives display drive signals of different colors in a time-sharing manner. Based on the display drive signals, each control unit 220 controls the conduction between the corresponding trigger unit 211 and the pixel unit, driving the pixel unit using the data voltage written by the trigger unit 211.

[0060] In a specific embodiment, if Figure 3 As shown, it should be noted that R, G, and B are output terminals of the driving circuit 20.

[0061] The multiple control units 220 include a red light control unit 220_R, a green light control unit 220_G, and a blue light control unit 220_B. The red light control unit 220_R is connected to the red light display driving signal input terminal and the red light trigger unit 211_R; the red light control unit 220_R controls the red light trigger unit 211_R to the pixel unit (that is, Figure 3 The path between the red light display driving signal input terminal and the green light trigger unit 211_G is connected, and the red light data voltage Data_R is used to drive the pixel unit. The green light control unit 220_G is connected to the green light display driving signal input terminal and the green light trigger unit 211_G; the green light control unit 220_G controls the green light trigger unit 211_G to the pixel unit (that is, the green light display driving signal EM_G received by the green light display driving signal input terminal) Figure 3 The path between the blue light display driving signal input terminal and the blue light trigger unit 211_B is connected, and the blue light control unit 220_B controls the blue light trigger unit 211_B to the pixel unit (that is, the blue light display driving signal EM_B received by the blue light display driving signal input terminal) is connected. Figure 3 The path between the blue light data voltage Data_B and the B output terminal is turned on, and the pixel unit is driven by the blue light data voltage Data_B.

[0062] It is understood that the display driving signal Data can control the display grayscale and display brightness of the pixel unit. For example, the display driving signal Data can control the flip angle of the liquid crystal to control the display grayscale and display brightness. In the present application, the display grayscale of the pixel unit can be controlled by controlling the pulse width or duty cycle of the display driving signal Data. In one embodiment, the display grayscale of the pixel unit is positively correlated with the pulse width of the display driving signal Data. That is, the larger the pulse width or duty cycle of the display driving signal Data, the higher the display grayscale and brightness of the pixel unit; the smaller the pulse width or duty cycle of the display driving signal Data, the lower the display grayscale and brightness of the pixel unit. In the embodiment of the present application, the pulse width or duty cycle of the red light data voltage Data_R is controlled to control the display grayscale and brightness of the red light; the pulse width or duty cycle of the green light data voltage Data_G is controlled to control the display grayscale and brightness of the green light; and the pulse width or duty cycle of the blue light data voltage Data_B is controlled to control the display grayscale and brightness of the blue light.

[0063] For further information, see Figure 3 The red light trigger unit 211_R includes: a red light trigger transistor T5 and a first storage capacitor C1; the first channel end of the red light trigger transistor T5 receives the red light data voltage Data_R, the second channel end of the red light trigger transistor T5 is connected to the first end of the first storage capacitor C1 and the red light control unit 220_R, the control end of the red light trigger transistor T5 is connected to the write unit 210, and the second end of the first storage capacitor C1 is connected to the common voltage end VCOM. The red light control unit 220_R includes: a first red light control transistor T2 and a second red light control transistor T6, the first channel end of the first red light control transistor T2 is connected to the red light display drive signal input end to receive the red light display drive signal EM_R, the second channel end of the first red light control transistor T2 is connected to the control end of the second red light control transistor T6, and the control end of the first red light control transistor T2 is connected to the voltage write end to receive the voltage write signal SW. The first channel end of the second red light control transistor T6 is connected to the red light trigger transistor T5, specifically to the second channel end of the red light trigger transistor T5, and the second channel end of the second red light control transistor T6 is connected to the pixel unit (that is, connected to Figure 3 R output terminal in the ).

[0064] Furthermore, the green light trigger unit 211_G includes: a green light trigger transistor T7 and a second storage capacitor C2; the first channel end of the green light trigger transistor T7 receives the green light data voltage Data_G, the second channel end of the green light trigger transistor T7 is connected to the first end of the second storage capacitor C2 and the green light control unit 220_G, the control end of the green light trigger transistor T7 is connected to the write unit 210, and the second end of the second storage capacitor C2 is connected to the common voltage end VCOM. The green light control unit 220_G includes: a first green light control transistor T3 and a second green light control transistor T8, the first channel end of the first green light control transistor T3 is connected to the green light display drive signal input end to receive the green light display drive signal EM_G, the second channel end of the first green light control transistor T3 is connected to the control end of the second green light control transistor T8, and the control end of the first green light control transistor T3 is connected to the voltage write end to receive the voltage write signal SW. The first channel end of the second green light control transistor T8 is connected to the green light trigger transistor T7, specifically to the second channel end of the green light trigger transistor T7, and the second channel end of the second green light control transistor T8 is connected to the pixel unit (that is, connected Figure 3 G output in the ).

[0065] Furthermore, the blue light trigger unit 211_B includes a blue light trigger transistor T9 and a third storage capacitor C3. A first channel end of the blue light trigger transistor T9 receives the blue light data voltage Data_B, a second channel end of the blue light trigger transistor T9 is connected to the first end of the third storage capacitor C3 and the blue light control unit 220_B, a control end of the blue light trigger transistor T9 is connected to the write unit 210, and a second end of the third storage capacitor C3 is connected to the common voltage terminal VCOM. The blue light control unit 220_B includes a first blue light control transistor T4 and a second blue light control transistor T10. The first channel end of the first blue light control transistor T4 is connected to the blue light display drive signal input terminal to receive the blue light display drive signal EM_B, the second channel end of the first blue light control transistor T4 is connected to the control end of the second blue light control transistor T10, and the control end of the first blue light control transistor T4 is connected to the voltage write terminal to receive the voltage write signal SW. The first channel end of the second blue light control transistor T10 is connected to the blue light trigger transistor T9, specifically connected to the second channel end of the blue light trigger transistor T9, and the second channel end of the second blue light control transistor T10 is connected to the pixel unit (that is, connected to the pixel unit). Figure 3 B output in the ).

[0066] Furthermore, the write unit 210 includes a write transistor T1. The control terminal of the write transistor T1 is connected to the voltage write terminal and receives the voltage write signal SW. The first channel terminal of the write transistor T1 is connected to the red light trigger unit 211_R, the green light trigger unit 211_G, and the blue light trigger unit 211_B. Specifically, the first channel terminal of the write transistor T1 is connected to the control terminal of the red light trigger transistor T5 in the red light trigger unit 211_R, the control terminal of the green light trigger transistor T7 in the green light trigger unit 211_G, and the control terminal of the blue light trigger transistor T9 in the blue light trigger unit 211_B. The second channel terminal of the write transistor T1 is connected to one of the red light display drive signal input terminal, the green light display drive signal input terminal, and the blue light display drive signal input terminal.

[0067] It should be noted that the red data voltage Data_R, green data voltage Data_G, and blue data voltage Data_B come from the data driver circuit (also known as the column driver circuit, Data Driver), which is used to provide voltage signals corresponding to grayscales to each pixel unit in the selected row. The red display drive signal EM_R, green display drive signal EM_G, and blue display drive signal EM_B come from the scan driver circuit (also known as the row driver circuit, Gate Driver), which is used to select pixel units row by row and control the switching state of transistors. Specifically, the scanning drive circuit of the display panel 10 has a red light display drive circuit GOA_R, which includes a red light display drive signal output terminal (connected to the red light display drive signal input terminal) for outputting the red light display drive signal EM_R, and also has a green light display drive circuit GOA_G, which includes a green light display drive signal output terminal (connected to the green light display drive signal input terminal) for outputting the green light display drive signal EM_G, and also has a blue light display drive circuit GOA_B, which includes a blue light display drive signal output terminal (connected to the blue light display drive signal input terminal) for outputting the blue light display drive signal EM_B. In order to simplify the wiring, the present application can multiplex the scanning signal Scan terminal connected to the second path terminal of the write transistor T1 with one of the red light display drive signal input terminal, the green light display drive signal input terminal, and the blue light display drive signal input terminal. The present application Figure 3 In the illustrated embodiment, the scan signal Scan terminal connected to the second path terminal of the write transistor T1 is multiplexed with the red light display drive signal input terminal as an example. Furthermore, the voltage write terminal S is an independent I / O interface provided on the driver chip (the chip providing the column driver circuit and the row driver circuit) for outputting the voltage write signal SW.

[0068] In the embodiment of the present application, the write transistor T1 is a PMOS transistor, and the first red light control transistor T2, the first green light control transistor T3, the first blue light control transistor T4, the red light trigger transistor T5, the second red light control transistor T6, the green light trigger transistor T7, the second green light control transistor T8, the blue light trigger transistor T9, and the second blue light control transistor T10 are NMOS transistors. In another embodiment, the write transistor T1 can also be set as an NMOS transistor, and the first red light control transistor T2, the first green light control transistor T3, the first blue light control transistor T4, the red light trigger transistor T5, the second red light control transistor T6, the green light trigger transistor T7, the second green light control transistor T8, the blue light trigger transistor T9, and the second blue light control transistor T10 can be PMOS transistors. This application is explained by taking the writing transistor T1 as a PMOS tube, the first red light control transistor T2, the first green light control transistor T3, the first blue light control transistor T4, the red light trigger transistor T5, the second red light control transistor T6, the green light trigger transistor T7, the second green light control transistor T8, the blue light trigger transistor T9, and the second blue light control transistor T10 as NMOS tubes as an example.

[0069] Combine Figure 4 , Figure 4 for Figure 3 The timing diagram of the driving circuit shown in FIG. 3 is a timing diagram of the driving circuit shown in FIG. Specifically, in the sampling phase t0, the data voltage Data needs to be written. Specifically, in the sampling phase t0, the voltage write signal SW is in a low-level state, the red display driving signal EM_R, the red data voltage Data_R, the green data voltage Data_G, and the blue data voltage Data_B are in a high-level state, and the write transistor T1, the red light trigger transistor T5, the green light trigger transistor T7, and the blue light trigger transistor T9 are turned on. The red light data voltage Data_R is written into the first storage capacitor C1 and stored through the red light trigger transistor T5, the green light data voltage Data_G is written into the second storage capacitor C2 and stored through the green light trigger transistor T7, and the blue light data voltage Data_B is written into the third storage capacitor C3 and stored through the blue light trigger transistor T9. It should be noted that the voltage write signal SW is a normal high voltage, which is converted to a low-level state during the sampling phase and returns to a normal high voltage state after the sampling phase is completed.

[0070] In the first time period t1, it is assumed that the first time period t1 displays red light. The voltage write signal SW is in a high level state (continuing to be converted from the normal high voltage state to the high level state, that is, the voltage rises compared to the normal high voltage), the write transistor T1 is turned off, and the first red light control transistor T2, the first green light control transistor T3 and the first blue light control transistor T4 are turned on. The red light display drive signal EM_R is in a high level state. Since the first red light control transistor T2 is turned on, the second red light control transistor T6 is also turned on. The red light data voltage Data_R stored in the first storage capacitor C1 is transmitted to the R output terminal through the second red light control transistor T6, thereby driving the pixel unit.

[0071] During the second time period t2, assuming that the display is green, the voltage write signal SW remains high, the write transistor T1 is turned off, and the first red light control transistor T2, the first green light control transistor T3, and the first blue light control transistor T4 are turned on. The green light display drive signal EM_G is high. Since the first green light control transistor T3 is turned on, the second green light control transistor T8 is also turned on. The green light data voltage Data_G stored in the second storage capacitor C2 is transmitted to the G output terminal through the second green light control transistor T8, thereby driving the pixel unit.

[0072] During the third time period t3, assuming that the display is blue, the voltage write signal SW remains high, the write transistor T1 is turned off, and the first red light control transistor T2, the first green light control transistor T3, and the first blue light control transistor T4 are turned on. The blue light display drive signal EM_B is high. Since the first blue light control transistor T4 is turned on, the second blue light control transistor T10 is also turned on. The blue light data voltage Data_B stored in the third storage capacitor C3 is transmitted to the B output terminal through the second blue light control transistor T10, thereby driving the pixel unit.

[0073] It should be noted that the first time period t1, the second time period t2, and the third time period t3 constitute a display cycle T. In this display cycle, the light-emitting element in the first time period t1 emits red light, the light-emitting element in the second time period t2 emits green light, and the light-emitting element in the third time period t3 emits blue light. In the next display cycle T+1, the light-emitting element in the first time period t1 can be controlled to emit blue light, the light-emitting element in the second time period t2 emits green light, and the light-emitting element in the third time period t3 emits red light. Furthermore, in the next display cycle T+2, the light-emitting element in the first time period t1 can be controlled to emit green light, the light-emitting element in the second time period t2 emits red light, and the light-emitting element in the third time period t3 emits blue light. The specific embodiment is not limited thereto, as long as the light-emitting elements emit red, green, and blue light in a time-sharing manner within a display cycle.

[0074] The control circuit of the present application can control the display grayscale and display brightness of different colors through the above control method, thereby improving the display effect.

[0075] Furthermore, since the light emitting element can emit red, green and blue light, the display panel 10 of the present application does not need to be provided with a color filter layer. Figure 5 As shown, Figure 5 This is a structural diagram of the third embodiment of the display panel of the present application. The display panel 10 includes: a first polarizer 51, a second polarizer 52 and a liquid crystal assembly 50. The first polarizer 51 and the second polarizer 52 are used to convert natural light into polarized light and work in conjunction with the liquid crystal assembly 50 to achieve light modulation and image display. The liquid crystal assembly 50 is arranged between the first polarizer 51 and the second polarizer 52. The liquid crystal assembly 50 includes: a first substrate 501 and a second substrate 502 arranged opposite to each other and a sealing frame 503 arranged at the edges of the first substrate 501 and the second substrate 502. The first substrate 501, the second substrate 502 and the sealing frame 503 form a sealed receiving cavity, in which liquid crystal molecules 506 are arranged. A black matrix 504 is arranged at a predetermined position of the liquid crystal molecules 506 near the surface of the second substrate 502. The first substrate 501, the second substrate 502 and the liquid crystal molecules 506 constitute a pixel unit. In one embodiment, the black matrix 504 is staggered with respect to the light emitting elements. Specifically, in a liquid crystal display module, the black matrix 504 is staggered with respect to the projection of the light emitting elements in a direction perpendicular to the panel. The black matrix 504 is used to prevent crosstalk between adjacent light emitting elements.

[0076] It should be noted that the driving circuit 20 of the present application is disposed on a first substrate 501. Specifically, the first substrate 501 is a TFT substrate, and the second substrate 502 is a filter substrate.

[0077] In the display panel 10 of the present application, a black matrix 504 can be prepared on a surface of the second substrate 502 near the accommodating cavity. In the existing design, after the preparation of the black matrix 504 is completed, it is necessary to coat a photoresist on the second substrate 502, expose the photoresist using a mask, define the pattern of the red filter layer, develop, and finally remove the unexposed photoresist to form the pattern of the red filter layer, and finally solidify. The preparation method of the blue filter layer and the green filter layer is the same. In the present application, the light-emitting element can emit red, green and blue light, and there is no need to set a red filter layer, a blue filter layer and a green filter layer, which can greatly simplify the manufacturing process, increase the output, and do not need to use a mask, color resistance materials, etc., thereby reducing costs. In addition, the color filter layer will affect the transmittance of light. The present application removes the color filter layer, which can improve the transmittance of light.

[0078] See also Figure 6 ,Book Figure 6This is a schematic diagram of the structure of an embodiment of the display module provided in this application. The display module includes a display panel 10 and a backlight device 100. The display panel 10 is mainly used for display. In this embodiment, the display panel 10 can be, for example, the above-mentioned Figures 1 to 5 The display panel 10 shown in any embodiment. The main function of the backlight device 100 is to provide sufficient and evenly distributed light sources for the display panel 10. Therefore, the backlight device 100 of the present application includes a plurality of light-emitting elements 110 arranged in an array.

[0079] In existing designs, the light-emitting elements 110 in the backlight device 100 are generally white light LED lamp beads. In the embodiment of the present application, the light-emitting elements 110 in the backlight device 100 are colored LED lamp beads, which can emit light of different colors in a time-sharing manner within a display cycle.

[0080] In one embodiment, each light-emitting element 110 is configured to emit red, green, and blue light. In this embodiment, the light-emitting element 110 may be, for example, an RGB LED bead, which is a light-emitting chip comprised of three independently packaged light-emitting diode units (one for each of the three primary colors, red, green, and blue). Each light-emitting diode unit has independent electrodes, and their current can be controlled by an external circuit to adjust their respective luminous intensities. In this embodiment, all light-emitting elements 110 are identical, emitting red light during the first time period t1 within a display cycle T, green light during the second time period t2, and blue light during the third time period t3.

[0081] In this embodiment, since each light-emitting element 110 can emit red, green and blue light, in the first time period t1, the red light control unit 220_R and the red light trigger unit 211_R connected to all the light-emitting elements 110 work together (the specific work flow is as above and will not be repeated here), so that all the light-emitting elements 110 emit red light. In the second time period, the green light control unit 220_G and the green light trigger unit 211_G connected to all the light-emitting elements 110 work together to control all the light-emitting elements 110 to emit green light. In the third time period, the blue light control unit 220_B and the blue light trigger unit 211_B connected to all the light-emitting elements 110 work together to control all the light-emitting elements 110 to emit blue light. Further, as Figure 7aIn the schematic diagram of the distribution of the first embodiment of the light-emitting elements 110, the array of light-emitting elements 110 can be defined as a plurality of light-emitting subareas 111. Each light-emitting subarea 111 includes a red light subarea 111_R, a green light subarea 111_G, and a blue light subarea 111_B. The red light subarea 111_R, the green light subarea 111_G, and the blue light subarea 111_B emit red light, green light, and blue light in a time-sharing manner within a display period T. Within each light-emitting subarea 111, the red light subarea 111_R, the green light subarea 111_G, and the blue light subarea 111_B are arranged along a first direction X. In one specific embodiment, three adjacent columns of light-emitting elements 110 are defined as one light-emitting subarea 111. Thus, the light-emitting elements 110 in columns 1-3 form one light-emitting subarea 111, the light-emitting elements 110 in columns 4-6 form one light-emitting subarea 111, the light-emitting elements 110 in columns 7-9 form one light-emitting subarea 111, and so on. In the first light-emitting subarea 111, the red light subarea 111_R represents the first column of light-emitting elements 110, the green light subarea 111_G represents the second column of light-emitting elements 110, and the blue light subarea 111_B represents the third column of light-emitting elements 110. In other embodiments, the red light subarea 111_R, the green light subarea 111_G, and the blue light subarea 111_B are arranged along the column direction (i.e., the column direction is the first direction X). In other embodiments, the red light subarea 111_R, the green light subarea 111_G, and the blue light subarea 111_B can also be arranged along the horizontal direction (i.e., the horizontal direction is the first direction X). This embodiment uses the column arrangement as an example for description.

[0082] In the first time period t1, specifically Figure 7b As shown, Figure 7b for Figure 7a The schematic diagram of the light-emitting elements in the first time period t1 shown controls the first column of the light-emitting element 110 array in the first light-emitting partition 111, the fourth column of the light-emitting element 110 array in the second light-emitting partition 111, the seventh column of the light-emitting element 110 array in the third light-emitting partition 111... the 3n-2 column (that is, the red light partition 111_R) in the light-emitting element 110 array in the nth light-emitting partition 111 to emit red light, and at this time, the light-emitting elements 110 in other columns do not emit light.

[0083] In the second time period t2, specifically as follows Figure 7c As shown, Figure 7c for Figure 7aThe schematic diagram of the light-emitting elements in the second time period t2 shown controls the 2nd column in the array of light-emitting elements 110 in the 1st light-emitting partition 111, the 5th column in the array of light-emitting elements 110 in the 2nd light-emitting partition 111, the 8th column in the array of light-emitting elements 110 in the 3rd light-emitting partition 111... the 3n-1th column (that is, the green light partition 111_G) in the array of light-emitting elements 110 in the nth light-emitting partition 111 to emit green light, and at this time, the light-emitting elements 110 in other columns do not emit light.

[0084] In the third time period t3, specifically as follows Figure 7d As shown, Figure 7d for Figure 7a The schematic diagram of the light-emitting elements in the third time period t3 shown controls the 3rd column in the array of light-emitting elements 110 in the 1st light-emitting partition 111, the 6th column in the array of light-emitting elements 110 in the 2nd light-emitting partition 111, the 9th column in the array of light-emitting elements 110 in the 3rd light-emitting partition 111... the 3nth column (that is, the blue light partition 111_B) in the array of light-emitting elements 110 in the nth light-emitting partition 111 emits blue light, and at this time, the light-emitting elements 110 in other columns do not emit light.

[0085] In one embodiment, during adjacent display cycles, the positions of the red light sub-area 111_R, the green light sub-area 111_G, and the blue light sub-area 111_B are the same, so that during the next display cycle T+1, the driving process of the display cycle T is repeated to achieve the next display. In another embodiment, during adjacent display cycles, such as display cycle T and display cycle T+1, the positions of the red light sub-area 111_R, the green light sub-area 111_G, and the blue light sub-area 111_B are different. For example, during display cycle T+1, during a first time period t1, the 3n-2 column of the light-emitting element 110 array in the n-th light-emitting sub-area 111 is controlled to emit green light. During a second time period t2, the 3n-1 column of the light-emitting element 110 array in the n-th light-emitting sub-area 111 is controlled to emit blue light. During a third time period t3, the 3n column of the light-emitting element 110 array in the n-th light-emitting sub-area 111 is controlled to emit red light. The specific details are not limited thereto.

[0086] When displaying red light, green light, and blue light, the transmittance of red light, green light, and blue light and different display grayscales can be controlled by controlling the pulse width of the red light data voltage Data_R, green light data voltage Data_G, and blue light data voltage Data_B (that is, the longer the high level duration, the larger the pulse width).

[0087] In another embodiment, the red light partition 111_R, the green light partition 111_G, and the blue light partition 111_B can be dispersed to improve the light crosstalk problem and reduce color separation. For example, the red light partition 111_R, the green light partition 111_G, and the blue light partition 111_B are arranged along the second direction Y, and the first direction X and the second direction Y intersect. For details, see Figure 8a , Figure 8a This is the distribution of the light emitting elements 110 in the second embodiment. Figure 7a In the illustrated embodiment, the red light partition 111_R, the green light partition 111_G, and the blue light partition 111_B are arranged along a first direction X, which is a column direction. In this embodiment, the red light partition 111_R, the green light partition 111_G, and the blue light partition 111_B are arranged along a second direction Y, and the angle between the second direction Y and the first direction X is less than 90 degrees.

[0088] In the first time period t1, specifically Figure 8b As shown, Figure 8b for Figure 8a The schematic diagram of the light emitting elements in the first time period t1 controls the light emitting elements 110 in the red light subarea 111_R in all the light emitting subareas 111 to emit red light, while the other light emitting elements 110 do not emit light.

[0089] In the second time period t2, specifically as follows Figure 8c As shown, Figure 8c for Figure 8a The schematic diagram of the light emitting elements in the second time period t2 shown controls the light emitting elements 110 in the green light subarea 111_G in all the light emitting subareas 111 to emit green light, while the other light emitting elements 110 do not emit light.

[0090] In the third time period t3, specifically as follows Figure 8d As shown, Figure 8d for Figure 8a The schematic diagram of the light emitting elements in the third time period t3 controls the light emitting elements 110 in the blue light subarea 111_B in all the light emitting subareas 111 to emit blue light, while the other light emitting elements 110 do not emit light.

[0091] In another embodiment, the light-emitting element 110 includes a red light-emitting element (for example, a red LED lamp bead), a blue light-emitting element (for example, a blue LED lamp bead) and a green light-emitting element (for example, a green LED lamp bead). In the first time period t1 within the display period T, the red light-emitting element is controlled to emit red light, in the second time period t2, the green light-emitting element is controlled to emit green light, and in the third time period t3, the blue light-emitting element is controlled to emit blue light. In this embodiment, the red light-emitting element, the blue light-emitting element and the green light-emitting element are arranged along the first direction; or, the red light-emitting element, the blue light-emitting element and the green light-emitting element are arranged along the second direction; the first direction and the second direction intersect. Specifically, the distribution of the red light-emitting element, the green light-emitting element and the blue light-emitting element can be as described above. Figure 7a and Figure 8a As shown, the specific display process can be, for example, Figure 7b-7d As shown, it is also possible to Figure 8b-8d As shown, no further details are given here.

[0092] In one embodiment, the three adjacent display periods T, T+1, and T+2 can also be considered as a complete display period (a complete display period here refers to the display time for displaying one frame of an image). During display period T, the red light subarea 111_R or the red light emitting element emits red light, during display period T+1, the green light subarea 111_G or the green light emitting element emits green light, and during display period T+2, the blue light subarea 111_B or the blue light emitting element emits blue light. Compared to the above embodiment, the display time of the red, green, and blue light is lengthened, and accordingly, the display time for displaying one frame of an image is also lengthened.

[0093] It should be noted that when the backlight device 100 emits light, taking a 180 Hz refresh rate as an example, theoretically within one display period T, t1 = t2 = t3 = 1 / 180 / 3 = 1.85 ms. Furthermore, because the luminous efficiencies of the red, green, and blue lights of the light-emitting element 110 are different—specifically, the luminous efficiency of red light is generally 30%-40%, the luminous efficiency of green light is generally 40%-50%, and the luminous efficiency of blue light is generally 20%-30%—assuming that the first time period t1 emits red light, the second time period t2 emits green light, and the third time period t3 emits blue light, then t1:t2:t3 = 3:2:4 or 4:3:5. Therefore, at a 180 Hz refresh rate, the settings of t1, t2, and t3 can be in accordance with the above-described rules, without specific limitations. Of course, at other refresh rates, the calculation method for setting t1, t2, and t3 is the same as described above and will not be further elaborated here.

[0094] Continue to see Figure 6The backlight device 100 of the present application further includes: a backlight backplane 80, a reflective sheet 81, a light guide plate 82, and a diffuser 83. The reflective sheet 81 is disposed on one side of the backlight backplane 80, and the light emitting element 110 is disposed on the side of the reflective sheet 81 away from the backlight backplane 80; the light guide plate 82 is disposed on the side of the light emitting element 110 away from the reflective sheet 81; and the diffuser 83 is disposed on the side of the light guide plate away from the light emitting element 110.

[0095] In existing designs, the backlight device 100 also includes a brightness-enhancing film, such as a prism sheet. In this embodiment, since the light-emitting element 110 can emit colored light, a color filter layer is not required in the display panel 10. Removing the color filter layer improves the light transmittance of the light-emitting element 110 and reduces light loss. Therefore, brightness enhancement can be omitted in the backlight device 100, and the prism sheet can be omitted. This allows the overall display module structure to be thinner and the maximum brightness to be correspondingly improved.

[0096] It should be noted that if the display module displays black, the light emitting element 110 may be controlled not to emit light during the display period of black.

[0097] The display module of this application utilizes a color light-emitting element 110, eliminating the color filter layer, improving transmittance and eliminating the brightness enhancement film layer in the backlight device 100. This allows for a thinner overall display module structure and a corresponding increase in maximum brightness. Furthermore, this eliminates the limitations of traditional color filter layers that define the physical positions of red, green, and blue light. When combined with a display driver circuit, this design offers greater flexibility, enriching color and viewing angles.

[0098] The above are merely embodiments of the present invention and are not intended to limit the scope of patent protection of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

1. A display panel, characterized in that: The display panel includes a driving circuit for controlling pixel units, and the driving circuit includes: a sampling trigger module and a control module; The sampling trigger module includes: a writing unit and a plurality of triggering units, wherein the plurality of triggering units are respectively connected to the writing unit, and writes data voltages corresponding to different colors of light into the plurality of triggering units based on the voltage writing signal received by the writing unit during the sampling phase; The control module includes: multiple control units, each of which is connected to the multiple trigger units in a one-to-one correspondence, and each of which is used to connect to a pixel unit. The multiple control units receive display drive signals of different colors in a time-sharing manner within a display cycle, and control the conduction of the path between the corresponding trigger unit and the pixel unit based on the display drive signal, and drive the pixel unit using the data voltage written by the trigger unit.

2. The display panel according to claim 1, wherein: The multiple trigger units include: a red light trigger unit, a green light trigger unit and a blue light trigger unit; the red light trigger unit writes a red light data voltage, the green light trigger unit writes a green light data voltage, and the blue light trigger unit writes a blue light data voltage; The multiple control units include: a red light control unit, a green light control unit and a blue light control unit; The red light control unit is connected to the red light display driving signal input terminal and the red light trigger unit; the red light control unit controls the path between the red light trigger unit and the pixel unit in response to the red light display driving signal received by the red light display driving signal input terminal, and drives the pixel unit using the red light data voltage; The green light control unit is connected to the green light display driving signal input terminal and the green light trigger unit; the green light control unit controls the path between the green light trigger unit and the pixel unit in response to the green light display driving signal received by the green light display driving signal input terminal, and drives the pixel unit using the green light data voltage; The blue light control unit is connected to the blue light display driving signal input end and the blue light trigger unit; the blue light control unit controls the path between the blue light trigger unit and the pixel unit in response to the blue light display driving signal received by the blue light display driving signal input end, and drives the pixel unit using the blue light data voltage.

3. The display panel according to claim 2, wherein: The red light trigger unit includes: a red light trigger transistor and a first storage capacitor; a first channel end of the red light trigger transistor receives the red light data voltage, a second channel end of the red light trigger transistor is connected to the first end of the first storage capacitor and the red light control unit, a control end of the red light trigger transistor is connected to the write unit, and a second end of the first storage capacitor is connected to a common voltage end; The red light control unit includes: a first red light control transistor and a second red light control transistor, the first path end of the first red light control transistor is connected to the red light display drive signal input end, the second path end of the first red light control transistor is connected to the control end of the second red light control transistor, the control end of the first red light control transistor is connected to the voltage writing end, and receives the voltage writing signal; the first path end of the second red light control transistor is connected to the red light trigger transistor, and the second path end of the second red light control transistor is connected to the pixel unit.

4. The display panel according to claim 2, wherein: The green light trigger unit includes: a green light trigger transistor and a second storage capacitor; a first channel end of the green light trigger transistor receives the green light data voltage, a second channel end of the green light trigger transistor is connected to the first end of the second storage capacitor and the green light control unit, a control end of the green light trigger transistor is connected to the write unit, and a second end of the second storage capacitor is connected to a common voltage end; The green light control unit includes: a first green light control transistor and a second green light control transistor, wherein the first channel end of the first green light control transistor is connected to the green light display drive signal input end, the second channel end of the first green light control transistor is connected to the control end of the second green light control transistor, and the control end of the first green light control transistor is connected to the voltage writing end to receive the voltage writing signal; the first channel end of the second green light control transistor is connected to the green light trigger transistor, and the second channel end of the second green light control transistor is connected to the pixel unit.

5. The display panel according to claim 2, wherein: The blue light trigger unit includes: a blue light trigger transistor and a third storage capacitor; a first channel end of the blue light trigger transistor receives the blue light data voltage, a second channel end of the blue light trigger transistor is connected to the first end of the third storage capacitor and the blue light control unit, a control end of the blue light trigger transistor is connected to the write unit, and a second end of the third storage capacitor is connected to the common voltage end; The blue light control unit includes: a first blue light control transistor and a second blue light control transistor, the first channel end of the first blue light control transistor is connected to the blue light display drive signal input end, the second channel end of the first blue light control transistor is connected to the control end of the second blue light control transistor, the control end of the first blue light control transistor is connected to the voltage writing end, and receives the voltage writing signal; the first channel end of the second blue light control transistor is connected to the blue light trigger transistor, and the second channel end of the second blue light control transistor is connected to the pixel unit.

6. The display panel according to any one of claims 2 to 5, wherein: The writing unit includes: A write transistor, wherein the control end of the write transistor is connected to the voltage write end to receive the voltage write signal, the first path end of the write transistor is connected to the red light trigger unit, the green light trigger unit and the blue light trigger unit, and the second path end of the write transistor is connected to one of the red light display drive signal input end, the green light display drive signal input end and the blue light display drive signal input end.

7. The display panel according to claim 1, wherein: The display grayscale of the pixel unit is positively correlated with the pulse width of the display driving signal.

8. A display module, characterized in that: include: A display panel, the display panel comprising the display panel according to any one of claims 1 to 7; The backlight device includes a plurality of light-emitting elements arranged in an array.

9. The display module according to claim 8, wherein: Each of the light emitting elements is used to emit red, green and blue light.

10. The display module according to claim 9, wherein: In one display cycle, the plurality of light-emitting elements arranged in the array are defined as a plurality of light-emitting subareas, each of the light-emitting subareas includes a red light subarea, a green light subarea, and a blue light subarea, and the red light subarea, the green light subarea, and the blue light subarea emit red light, green light, and blue light in a time-sharing manner in one display cycle; Wherein, in each of the light-emitting partitions, the red light partition, the green light partition, and the blue light partition are arranged along a first direction; or the red light partition, the green light partition, and the blue light partition are arranged along a second direction; and the first direction and the second direction intersect; In adjacent display periods, the positions of the defined red light subarea, the green light subarea, and the blue light subarea are different.

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