Display panel, display device, and control method of display device

Abstract

The application discloses a display panel, a display device and a control method of the display device. The display panel comprises a substrate, a light-emitting device layer, a light regulation layer and a polarizing layer. The light-emitting device layer is formed on one side of the substrate and comprises a plurality of light-emitting units. Each light-emitting unit comprises a first electrode, a second electrode and a light-emitting layer arranged between the first electrode and the second electrode. The light regulation layer is arranged on the side of the light-emitting device layer away from the substrate. The light regulation layer comprises at least one electrically-controlled light regulation module. The light transmittance of the electrically-controlled light regulation module changes according to an input signal of the electrically-controlled light regulation module. The polarizing layer is arranged on the light regulation layer. The display panel provided by the application can improve the service life and display effect.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel, a display device, and a control method for the display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs), also known as organic electroluminescent displays or organic light-emitting semiconductors, have gradually replaced liquid crystal displays (LCDs) due to their many advantages, including low driving voltage, active light emission, wide viewing angle, high efficiency, fast response speed, and ease of realizing full-color large-area wall-mounted and flexible displays.

[0003] OLED display panels can be damaged if exposed to ultraviolet light. Summary of the Invention

[0004] This application provides a display panel, a display device, and a control method for the display device, which can improve the lifespan and display effect of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, including:

[0006] Substrate;

[0007] A light-emitting device layer is formed on one side of the substrate and includes a plurality of light-emitting units. Each light-emitting unit includes a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode.

[0008] A light control layer is disposed on the side of the light-emitting device layer opposite to the substrate. The light control layer includes at least one electrically controlled light control module, and the transmittance of the electrically controlled light control module varies according to the input signal of the electrically controlled light control module.

[0009] A polarizing layer is stacked on the light control layer.

[0010] According to an embodiment of the first aspect of this application, the display panel further includes a touch layer disposed on the side of the light control layer facing the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the electrically controlled light modulation module includes a first electrode layer, an ion storage layer, an ion transport layer, an electrochromic material layer, and a second electrode layer stacked together.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the electrochromic material layer comprises tungsten trioxide.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the light control layer includes at least two electrically controlled light control modules spliced ​​together, and the at least two electrically controlled light control modules are independently controlled by each other.

[0014] An embodiment of the second aspect of this application provides a display device, including any of the display panels provided in the first aspect of this application, and further comprising:

[0015] Optical sensor used to sense ambient light intensity;

[0016] The controller is used to adjust the transmittance of the electronically controlled light modulation module based on the sensing results of the optical sensor.

[0017] Both the optical sensor and the electronically controlled light modulation module are connected to the controller and signal.

[0018] An embodiment of the third aspect of this application provides a control method for a display device, the display device including any of the display panels provided in the first aspect of this application, the control method comprising:

[0019] When the light-emitting unit is in a non-light-emitting state and the duration of the ambient light illuminance being greater than the first preset threshold is greater than the preset duration threshold, the electronically controlled light modulation module is controlled to have a first transmittance.

[0020] When the light-emitting unit is in a light-emitting state, or when all the light-emitting units are in a non-light-emitting state and the ambient light illuminance is less than a first preset threshold, or when all the light-emitting units are in a non-light-emitting state and the duration for which the ambient light illuminance is greater than the first preset threshold is less than a preset duration threshold, the electronically controlled light modulation module is controlled to have a second transmittance.

[0021] Wherein, the first transmittance is lower than the second transmittance.

[0022] According to a third aspect of this application, the first transmittance is less than or equal to 10%, and the second transmittance is greater than or equal to 80%.

[0023] According to any of the foregoing embodiments of the third aspect of this application, the first preset threshold is 10000 lux.

[0024] According to any of the foregoing embodiments of the third aspect of this application, the preset duration threshold is 5 seconds.

[0025] The display panel provided in this application includes a light control layer and a polarizing layer located on the light-emitting side of the light-emitting device layer. The polarizing layer is used to eliminate light reflected from the internal structure of the display panel, thereby improving the display effect of the display panel in the display state and preventing light leakage in the non-display state. The light control layer is used to control the light. The light control layer includes at least one electrically controlled light control module. The orthographic projection of the electrically controlled light control module on the light-emitting device layer covers at least one light-emitting unit. The transmittance of the electrically controlled light control module is adjustable. Therefore, in each electrically controlled light control module and the light-emitting unit it covers, when the ambient light is strong and the light-emitting units are not emitting light, the transmittance of the electrically controlled light control module can be reduced to protect the light-emitting layer in the light-emitting unit, preventing ultraviolet light in the ambient light from irradiating and damaging the light-emitting layer, thereby improving the service life of the display panel. When the light-emitting unit is emitting light, the transmittance of the electrically controlled light control module can be increased to allow the light emitted by the light-emitting unit to pass through better, so that the display panel can achieve a good display effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0031] Figure 5 This is a schematic flowchart of the main process of the control method for the display device provided in the embodiments of this application.

[0032] In the attached image:

[0033] 1-Substrate; 2-Driving circuit layer; 3-Light-emitting device layer; 31-Light-emitting unit; 311-First electrode; 312-Second electrode; 313-Light-emitting layer; 3131-First light-emitting material layer; 3132-Second light-emitting material layer; 3133-Third light-emitting material layer; 3134-Hole injection layer; 3135-Hole transport layer; 3136-Electron transport layer; 3137-Electron injection layer; 4-Polarizing layer; 5-Light control layer; 51-Electrically controlled light control module; 511-First electrode layer; 512-Ion storage layer; 513-Ion transport layer; 514-Electrochromic material layer; 515-Second electrode layer; 6-Pixel definition layer; 7-Cover plate; 8-Optical sensor; 9-Touch layer; 10-Display panel; 20-Display device. Detailed Implementation

[0034] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0036] The inventors discovered that exposure to ultraviolet (UV) light can negatively impact OLED display panels because UV light causes the organic light-emitting materials to degrade, leading to reduced luminous efficiency and a shortened lifespan over time. Therefore, prolonged exposure to ambient light, including UV rays, can negatively affect the lifespan and display performance of OLED display panels. Based on this research, the inventors have provided a display panel, a display device, and a method for controlling the display device to improve the lifespan and display performance of the display panel.

[0037] To better understand this application, the following will be combined with... Figures 1 to 5 The display panel, display device, and control method of the display device according to embodiments of this application will be described in detail.

[0038] Please see Figure 1 This application provides a display panel 10, including a substrate 1, a light-emitting device layer 3, a light-regulating layer 5, and a polarizing layer 4. The light-emitting device layer 3 is formed on one side of the substrate 1 and includes a plurality of light-emitting units 31. Each light-emitting unit 31 includes a first electrode 311, a second electrode 312, and a light-emitting layer 313 formed between the first electrode 311 and the second electrode 312. The light-regulating layer 5 is disposed on the side of the light-emitting device layer 3 away from the substrate 1. The light-regulating layer 5 includes at least one electrically controlled light-regulating module 51. The transmittance of the electrically controlled light-regulating module 51 changes according to the input signal of the electrically controlled light-regulating module 51. The polarizing layer 4 is stacked on the light-regulating layer 5.

[0039] The display panel 10 provided in this application includes a light control layer 5 and a polarizing layer 4 located on the light-emitting side of the light-emitting device layer 3. The polarizing layer 4 is used to eliminate the light reflected by the internal structure of the display panel 10, thereby improving the display effect of the display panel 10 in the display state and preventing light leakage in the non-display state. The light control layer 5 is used to control the light. The light control layer 5 includes at least one electronically controlled light control module 51. The orthogonal projection of the electronically controlled light control module 51 onto the light-emitting device layer 3 covers at least one light-emitting unit 31. The transmittance of the electronically controlled light control module 51 is adjustable. Thus, in each electronically controlled light control module 51 and the light-emitting unit 31 it covers, when the ambient light is strong and the light-emitting units 31 are not emitting light, the transmittance of the electronically controlled light control module 51 is reduced to protect the light-emitting layer 313 in the light-emitting unit 31, preventing ultraviolet light in the ambient light from irradiating the light-emitting layer 313 and causing damage to the light-emitting layer 313, thereby improving the service life of the display panel 10. When the light-emitting unit 31 emits light, the transmittance of the electronically controlled light control module 51 can be increased to allow the light emitted by the light-emitting unit 31 to pass through better, so that the display panel 10 can achieve a good display effect.

[0040] In the aforementioned display panel, a circular polarizer is used in the polarizing layer 4. When ambient light enters the interior of the display panel 10 through the circular polarizer, it becomes circularly polarized light after passing through the circular polarizer. After being reflected by the metal layer inside the display panel 10, the circularly polarized light changes its rotation direction. As a result, when it shines on the circular polarizer after reflection, it is absorbed by the circular polarizer, thereby preventing the light reflected by the metal layer from escaping from the display surface. This helps to improve the display quality. At the same time, in the non-display state, it prevents the phenomenon of light leakage from the display panel 10 due to the reflection of external light by the metal layer from escaping from the display surface, thus improving the user experience of the display panel 10.

[0041] In one feasible embodiment, the substrate 1 can be formed of a polymeric material such as glass, polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), or glass fiber reinforced plastic (FRP). It can be transparent, translucent, or opaque. The substrate 1 in the embodiments of this application can also be a flexible substrate 1, formed of a thin polymer, such as polyimide.

[0042] A buffer layer may also be formed on the substrate 1. The buffer layer may include a multilayer inorganic and organic layer stacked structure to block oxygen and moisture, prevent moisture or impurities from diffusing through the substrate 1, and provide a flat surface on the upper surface of the substrate 1.

[0043] A driving circuit layer 2 is formed between the substrate 1 and the light-emitting device layer 3 to drive each light-emitting unit 31 of the light-emitting device layer 3 to emit light.

[0044] The light-emitting device layer 3 includes a plurality of light-emitting units 31. Specifically, it may include a plurality of red light-emitting units 31 for emitting red light, a plurality of green light-emitting units 31 for emitting green light, and a plurality of blue light-emitting units 31 for emitting blue light. It may also include a white light-emitting unit 31 for emitting white light, etc. This application does not make any special limitations.

[0045] Each light-emitting unit 31 includes a first electrode 311, a second electrode 312, and a light-emitting layer 313 located between the first electrode 311 and the second electrode 312. Specifically, the first electrode 311 is the anode and the second electrode 312 is the cathode. The anode material can be indium tin oxide and silver, and the cathode material can be a metal alloy including silver, such as a magnesium-silver alloy. Alternatively, the first electrode 311 can be the cathode and the second electrode 312 can be the anode. This application does not make any special limitation.

[0046] The display panel 10 also includes a pixel definition layer 6 formed on the driving circuit layer 2. The pixel definition layer 6 includes a plurality of pixel openings that correspond one-to-one with the light-emitting unit 31. The first electrode 311 is formed on the driving circuit layer 2 and exposed through the pixel openings.

[0047] Each color of light-emitting unit 31 emits light of the corresponding color through a light-emitting layer 313. Specifically, the light-emitting layer 313 includes a common layer and a light-emitting material layer formed in each pixel opening. The light-emitting material layer includes a first light-emitting material layer 3131, a second light-emitting material layer 3132, and a third light-emitting material layer 3133, which correspond one-to-one with the red light-emitting unit 31, the green light-emitting unit 31, and the blue light-emitting unit 31. The first light-emitting material layer 3131 and the second light-emitting material layer 3132 include phosphorescent materials, and the third light-emitting material layer 3133 includes fluorescent materials. The common layer is the entire layer covering the pixel defining layer, including a first part located in the pixel opening and a second part located on the side of the pixel defining layer facing away from the substrate 1. The common layer includes part or all of the electron injection layer 3137 (EIL), the electron transport layer 3136 (ETL), the hole blocking layer (HBL), the electron blocking layer (EBL), the hole transport layer 3135 (HTL), and the hole injection layer 3134 (HIL).

[0048] The light-emitting layer 313 is generally prepared by vapor deposition process. Specifically, a common layer is formed by vapor deposition using a general metal mask with vapor deposition openings corresponding to the display areas of each display panel 10, and a light-emitting material layer is formed by vapor deposition using a fine metal mask with vapor deposition openings corresponding to each light-emitting unit 31. The light-emitting layer 313 can also be prepared by other processes, which are not limited in this application.

[0049] The display panel 10 also includes a cover plate 7, formed on the side of the light-emitting device layer 3 facing away from the substrate 1, for protecting the internal components of the display panel 10. A light-regulating layer 5 is formed between the light-emitting device layer 3 and the cover plate 7, so that the cover plate 7 can protect the light-regulating layer 5 and prevent wear.

[0050] In one feasible implementation, the display panel 10 further includes a touch layer 9, such as... Figure 1 As shown, the touch layer 9 is disposed on the side of the light control layer 5 facing the substrate 1.

[0051] In another feasible implementation, such as Figure 2 As shown, the touch layer 9 is disposed between the polarizing layer 4 and the light control layer 5.

[0052] In the above embodiment, an insulating layer (not shown in the figure) is provided between the touch layer 9 and the light control layer 5 to avoid mutual interference between the two.

[0053] In one feasible implementation, the orthographic projection of the electronically controlled light control module 51 onto the plane where the light-emitting device layer 3 is located covers at least a portion of the light-emitting unit 31. This allows the light-emitting material layer in at least a portion of the light-emitting unit 31 to be protected by adjusting the transmittance of the electronically controlled light control module 51, thereby reducing the damage caused by ultraviolet rays in ambient light and improving the service life of the display panel 10.

[0054] In one feasible implementation, such as Figure 2 As shown, the light control layer 5 includes an electronically controlled light control module 51. The orthographic projection of the electronically controlled light control module 51 onto the plane of the light-emitting device layer 3 covers the light-emitting device layer 3. Thus, by adjusting the transmittance of the electronically controlled light control module 51, the light-emitting material layer in all the light-emitting units 31 can be protected, reducing the damage caused by ultraviolet rays in ambient light, thereby further improving the service life of the display panel 10.

[0055] In another feasible implementation, such as Figure 3 As shown, the light control layer 5 includes at least two interconnected electronically controlled light control modules 51. The orthographic projection of each electronically controlled light control module 51 onto the plane of the light-emitting device layer 3 together covers the light-emitting device layer 3. Moreover, the at least two electronically controlled light control modules 51 are independently controlled, thereby protecting the light-emitting material layer in the light-emitting unit 31 in a time-sharing or synchronous manner by adjusting the light transmittance of each electronically controlled light control module 51, reducing the damage caused by ultraviolet rays in ambient light, and thus further improving the service life of the display panel 10.

[0056] In the above embodiment, each electronically controlled light modulation module 51 is arranged in an array.

[0057] In one feasible implementation, each electronically controlled light modulation module 51 includes a first electrode layer 511, an ion storage layer 512, an ion transport layer 513, an electrochromic material layer 514, and a second electrode layer 515 stacked together.

[0058] The first electrode layer 511 and the second electrode layer 515 are made of light-transmitting materials, such as indium tin oxide, to prevent them from affecting the light emission of the light-emitting unit 31, thereby improving the display quality of the display panel 10.

[0059] The electrochromic material layer 514 includes inorganic or organic electrochromic materials. The ion storage layer 512 and ion transport layer 513 can be based on hydrogen ions or lithium ions. An electric field is formed between the first electrode layer 511 and the second electrode layer 515, causing the electrochromic material layer 514 to undergo an oxidation-reduction reaction. This causes a change in the transmittance of the electronically controlled light modulation module 51. When the light-emitting unit 31 emits light, the transmittance of the electronically controlled light modulation module 51 is increased to avoid affecting the light emission effect. When the light-emitting unit 31 does not emit light and the ambient light intensity is relatively high, the transmittance of the electronically controlled light modulation module 51 is decreased to block the light-emitting material layer in the light-emitting unit 31 and prevent ultraviolet rays from damaging the light-emitting material layer.

[0060] Specifically, the electrochromic material layer 514 can be tungsten trioxide (WO3). An electric field is formed between the first electrode layer 511 and the second electrode layer 515. Electrons and cations are injected into WO3. Electrons are captured by W atoms to form localized states, while cations reside in WO3 to form a deep blue compound. Different valence states of W ions exist in the electrochromic material layer 514. The transition of electrons between neighboring W atoms of different valence states causes the color of the WO3 film to change, thereby changing the transmittance of the electronically controlled light modulation module 51.

[0061] This application also provides a display device 20, such as... Figure 4 As shown, the display panel 10 includes any of the above embodiments, and also includes an optical sensor 8 and a controller. The optical sensor 8 is used to sense the ambient light intensity; the controller is used to adjust the transmittance of the electronically controlled light control module 51 according to the sensing result of the optical sensor 8. Both the optical sensor 8 and the electronically controlled light control module 51 are signal connected to the controller.

[0062] Specifically, both the optical sensor 8 and the electronically controlled light adjustment module 51 are connected to the controller via electrical signals.

[0063] Specifically, the optical sensor 8 is located on one side of the display panel 10, so as to sense the intensity of ambient light while avoiding the light emitted by the display panel 10 from affecting the sensing results.

[0064] Specifically, the controller is a driver chip.

[0065] This application also provides a control method for a display device, applicable to any of the display panels provided in the above embodiments, such as... Figure 5 As shown, the control method for the display device includes:

[0066] S100, when the light-emitting unit 31 is in a non-light-emitting state and the duration of the ambient light illuminance being greater than the first preset threshold is greater than the preset duration threshold, the electronically controlled light adjustment module 51 is controlled to have a first light transmittance.

[0067] S200, when the light-emitting unit 31 is in the light-emitting state, or the light-emitting unit 31 is in the non-light-emitting state and the ambient light illuminance is less than the first preset threshold, or the light-emitting unit 31 is in the non-light-emitting state and the duration of the ambient light illuminance being greater than the first preset threshold is less than the preset duration threshold, the electronically controlled light adjustment module 51 is controlled to have a second transmittance.

[0068] The first transmittance is lower than the second transmittance.

[0069] In the above driving method, the transmittance of the electronically controlled light control module 51 is determined under the following conditions: all light-emitting units 31 covered by the electronically controlled light control module 51 are in a non-light-emitting state, and the duration for which the ambient light illuminance is greater than a first preset threshold is greater than a preset duration threshold. The first preset threshold is 10000 lux; the preset duration threshold is 5 seconds. This condition limits the duration for which the ambient light illuminance is greater than the first preset threshold. Only when this duration exceeds the preset duration threshold is the transmittance of the electronically controlled light control module 51 reduced. This avoids the situation where the electronically controlled light control module 51 frequently switches its transmittance when encountering occasional and brief strong light irradiation, thus preventing an increase in the power of the display panel 10, and also preventing a reduction in the lifespan of the electronically controlled light control layer 42.

[0070] The light transmittance of the electronically controlled light control module 51 in the display panel 10 is controlled by the control method of the above-mentioned display device, so that when at least one of the light-emitting units 31 covered by the electronically controlled light control module 51 is in a light-emitting state, the light transmittance of the electronically controlled light control module 51 is high, so as to facilitate light transmission.

[0071] When all the light-emitting units 31 covered by the electronically controlled light control module 51 are in a non-light-emitting state, and the ambient light illuminance is less than the first preset threshold, the light transmittance of the electronically controlled light control module 51 is high. When the ambient light illuminance is less than the first preset threshold, the impact on the light-emitting layer 313 in the display panel 10 is small, so it can be left unblocked to avoid increasing the power of the display panel 10 due to the frequent switching of the light transmittance of the electronically controlled light control module 51, and at the same time to prevent the reduction of the service life of the electronically controlled light control layer 42.

[0072] When all the light-emitting units 31 covered by the electronically controlled light control module 51 are in a non-light-emitting state and the duration of the ambient light intensity being greater than the first preset threshold is less than the preset duration threshold, since it is only a brief period of strong light irradiation, the transmittance of the electronically controlled light control module 51 can be left unadjusted. This avoids the increase in power of the display panel 10 caused by the frequent switching of transmittance by the electronically controlled light control module 51, and also prevents a reduction in the service life of the electronically controlled light control layer 42.

[0073] When the electronically controlled light control layer 42 includes only one electronically controlled light control module 51, and the electronically controlled light control module 51 covers the light-emitting device layer 3, that is, when the electronically controlled light control module 51 covers all the light-emitting units 31, the transmittance of each part of the light control layer 5 is controlled as a whole, the driving method is simple, the power consumption is low and the lifespan is long.

[0074] When the light control layer 5 includes at least two electrically controlled light control modules 51, each electrically controlled light control module 51 covers at least one light-emitting unit 31, and all electrically controlled light control modules 51 cover all light-emitting units 31, the light control layer 5 can adjust the transmittance in sections. That is, the transmittance of each electrically controlled light control module 51 can be adjusted separately. Thus, when the light-emitting units 31 covered by at least one electrically controlled light control module 51 are all in a non-light-emitting state, the transmittance of the electrically controlled light control module 51 in which all the covered light-emitting units 31 are in a non-light-emitting state can be reduced, so as to protect the light-emitting layer in some non-light-emitting units among all the light-emitting units 31, and the protection effect is better.

[0075] In the above embodiment, the intensity of ambient light can be measured by an optical sensor, and the transmittance of the electronically controlled light modulation module 51 can be controlled by a controller.

[0076] In the above driving method, the first transmittance is less than or equal to 10%, which can block ultraviolet light in the ambient light and reduce the probability of the light-emitting layer 313 in the display panel 10 experiencing a reduction in lifespan due to prolonged exposure of the light-emitting layer 313 to ultraviolet light. The second transmittance is greater than or equal to 80%, which can achieve a good display effect when the display panel 10 emits light.

[0077] The light control layer 5 can be selected to meet the requirements of the first and second light transmittance by adjusting the material of the light control layer 5, which will not be described in detail in this application.

[0078] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, include: Substrate; A light-emitting device layer is formed on one side of the substrate and includes a plurality of light-emitting units. Each light-emitting unit includes a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode. A light control layer is disposed on the side of the light-emitting device layer opposite to the substrate. The light control layer includes at least one electrically controlled light control module. The transmittance of the electrically controlled light control module varies according to the input signal of the electrically controlled light control module. The transmittance of the electrically controlled light control module is used to reduce the light emission of the light-emitting unit in a non-light-emitting state and when the ambient light illuminance is greater than a first preset threshold for at least a portion of the time period. A polarizing layer is stacked on the light control layer.

2. The display panel according to claim 1, characterized in that, The display panel also includes a touch layer, which is disposed on the side of the light control layer facing the substrate.

3. The display panel according to claim 1, characterized in that, The electronically controlled light modulation module includes a first electrode layer, an ion storage layer, an ion transport layer, an electrochromic material layer, and a second electrode layer stacked together.

4. The display panel according to claim 3, characterized in that, The electrochromic material layer includes tungsten trioxide.

5. The display panel according to claim 1, characterized in that, The light control layer includes at least two interconnected electronically controlled light control modules, and the at least two electronically controlled light control modules are independently controlled by each other.

6. A display device, characterized in that, Including the display panel according to any one of claims 1-5, further comprising: Optical sensor used to sense ambient light intensity; The controller is used to adjust the transmittance of the electronically controlled light modulation module based on the sensing results of the optical sensor. Both the optical sensor and the electronically controlled light modulation module are connected to the controller via signal connection.

7. A control method for a display device, characterized in that, The display device includes the display panel according to any one of claims 1-5, and the control method includes: When the light-emitting unit is in a non-light-emitting state and the duration of the ambient light illuminance being greater than the first preset threshold is greater than the preset duration threshold, the electronically controlled light modulation module is controlled to have a first transmittance. When the light-emitting unit is in a light-emitting state, or when all the light-emitting units are in a non-light-emitting state and the ambient light illuminance is less than a first preset threshold, or when all the light-emitting units are in a non-light-emitting state and the duration for which the ambient light illuminance is greater than the first preset threshold is less than a preset duration threshold, the electronically controlled light modulation module is controlled to have a second transmittance. Wherein, the first transmittance is lower than the second transmittance.

8. The control method according to claim 7, characterized in that, The first transmittance is less than or equal to 10%, and the second transmittance is greater than or equal to 80%.

9. The control method according to claim 7, characterized in that, The first preset threshold is 10000 lux.

10. The control method according to claim 7, characterized in that, The preset duration threshold is 5 seconds.

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