WO2022206539A1

WO2022206539A1 - Display substrate, display panel, display panel driving method and electronic device

Info

Publication number: WO2022206539A1
Application number: PCT/CN2022/082716
Authority: WO
Inventors: 苏子鹏
Original assignee: 维沃移动通信有限公司
Priority date: 2021-03-29
Filing date: 2022-03-24
Publication date: 2022-10-06
Also published as: CN112992053A

Abstract

Disclosed in the present application are a display substrate, a display panel, a display panel driving method and an electronic device, belonging to the technical field of display. The display substrate comprises: a base and a pixel defining layer arranged on the substrate, wherein the pixel defining layer comprises a plurality of pixel defining portions, a first electrode, an electrochromic layer and a touch-control driving electrode are successively arranged, in a stacked manner, on the side of each pixel defining portion that is away from the base, and a color-changing reaction may occur in the electrochromic layer under the action of electric fields of the first electrode and the touch-control driving electrode.

Description

Display substrate, display panel, display panel driving method and electronic device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application with the application number 2021103352746 filed on March 29, 2021 and the title of the invention is "a display substrate, a display panel and a driving method thereof", which are fully incorporated into this application by reference .

technical field

The present application belongs to the field of display technology, and in particular relates to a display substrate, a display panel, a display panel driving method, and an electronic device.

Background technique

In the prior art, the display screen of an electronic device is generally in a monotonous black state when the screen is off.

In view of the problem that the display screen is too monotonous when the screen is off, although the colorful patterns can be presented in the way of display saver, because the display screen is still in the working state when the display screen is saved, the above method will inevitably increase the power consumption of the display screen and lead to the battery power. The usage time is shortened, which in turn affects the user experience.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a display substrate, a display panel, a display panel driving method and an electronic device, which can solve the problem that the existing display screen cannot display colors with low power consumption when it is not needed.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a display substrate, including: a substrate and a pixel definition layer disposed on the substrate;

The pixel defining layer includes a plurality of pixel defining portions arranged at intervals, and each pixel defining portion is provided with a first electrode, an electrochromic layer and a touch driving electrode stacked in sequence on one side away from the substrate;

The electrochromic layer can undergo a color changing reaction under the action of the electric field of the first electrode and the touch driving electrode.

In a second aspect, an embodiment of the present application provides a display panel, wherein the display panel includes the above-mentioned display substrate.

In a third aspect, an embodiment of the present application provides a display panel driving method, the driving method is used for driving the above-mentioned display panel, wherein the driving method includes:

In the screen-off state, a first voltage is applied between the touch driving electrodes and the first electrodes, so that the electrochromic layer changes from a primary color to a target color, and the primary color is black or gray.

In a fourth aspect, an embodiment of the present application provides an electronic device, the electronic device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being The processor implements the steps of the method according to the first aspect when executed.

In a fifth aspect, an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented .

In a sixth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the first aspect the method described.

In the embodiment of the present application, the display substrate includes a substrate and a pixel defining layer disposed on the substrate; the pixel defining layer includes a plurality of pixel defining portions arranged at intervals, and each pixel defining portion is stacked in sequence on a side away from the substrate A first electrode, an electrochromic layer and a touch driving electrode are provided; the electrochromic layer can undergo a color changing reaction under the action of the electric field of the first electrode and the touch driving electrode. In the above-mentioned display substrate, an electrochromic layer is added between the touch driving electrodes and the first electrode located on the display defining portion. When the above-mentioned display substrate is applied to a display panel, the electrochromic layer can be reversible under the action of an electric field. Therefore, when the screen of the display panel is closed, the electrochromic layer can be adjusted by applying a voltage to the touch drive electrode and the first electrode, so that the entire display panel can be in a colorful state; in addition, because of the electrochromic layer The color-changing layer will not consume power when the color does not change, and the power consumption of the above-mentioned multi-color pattern presentation method is much lower than that of the existing screen saver method.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a display panel provided by an embodiment of the present application;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

Fig. 3 is the B-direction cross-sectional schematic diagram in Fig. 2;

FIG. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of this application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

The display substrate provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Referring to FIGS. 1-3 , the above-mentioned display substrate 10 includes a substrate 101 and a pixel defining layer 102 disposed on the substrate 101 ; the above-mentioned pixel defining layer 102 includes a plurality of pixel defining portions 103 arranged at intervals, and each pixel defines A first electrode 105 , an electrochromic layer 106 and a touch driving electrode 107 are stacked in sequence on the side of the portion 103 away from the substrate 101 ; A discoloration reaction occurs under the action of an electric field.

The embodiments of the present application are applicable to the display panel 20 having the touch layer 110 , and the touch drive electrodes 107 are the drive electrodes of the touch layer 110 ; the touch layer 110 further includes touch sensing electrodes, which are used for sensing Electrodes for touch operation; when a touch occurs, the distance between the touch driving electrodes 107 near the touch point and the touch sensing electrodes will change, so that the capacitive coupling between the two is affected and a sensing signal is generated. Then, the position of the touch point can be calculated.

In the embodiment of the present application, the sub-pixel unit 104 is disposed in the area between the adjacent pixel defining portions 103 ; the above-mentioned display substrate 10 further includes a plurality of thin film transistors 109, and the plurality of thin film transistors 109 are located on the above-mentioned substrate 101 and the above-mentioned pixel boundary Between the layers 102, and each sub-pixel unit 104 is electrically connected to one of the above-mentioned thin film transistors 109 through the corresponding second electrode 108, the above-mentioned thin-film transistor 109 is used to apply a driving signal to the above-mentioned second electrode 108, and each of the above-mentioned sub-pixel units 104 conducts or contacts with the above-mentioned first electrode 105 on the side away from the above-mentioned substrate 101, and then uses one of the first electrode 105 and the second electrode 108 as an anode, and connects the first electrode 105 and the second electrode 108. The other of the two is used as a cathode, and combined with the switching function of the above-mentioned thin film transistor 109 , it is possible to control whether the corresponding sub-pixel unit emits light or not. The above-mentioned sub-pixel unit 104 may be an OLED pixel sub-unit, and may specifically be a red-light pixel sub-unit, a green-light pixel sub-unit or a blue-light pixel sub-unit. Wherein, the material of the cathode and the touch driving electrode may be one or more of metal silver Ag, copper Cu, magnesium Mg, aluminum Al, metal mesh Metal Mesh, metal oxide ITO, and indium tin oxide.

The above-mentioned thin film transistor includes a buffer layer 91, an indium gallium zinc oxide (Indium Gallium Zinc Oxide, IGZO) active layer 92, a gate insulating layer 93, a gate 94, and an interlayer dielectric layer 95, which are sequentially located on the substrate 101. The source electrode (S electrode) 96 and the drain electrode (D electrode) 97 above the interlayer dielectric layer, the planarization layer 98 covering the source electrode 96, the drain electrode 97 and the gate electrode 94; the second electrode 108 and the drain electrode 94 connections.

Optionally, a thin film transistor includes N units composed of the above-mentioned source electrodes 96, drain electrodes 97, and gate electrodes 94, and the drain electrode 97 of the previous unit is connected to the gate electrode 94 of the next unit, and the first The source 96 of one cell is connected to the anode of the control circuit, and the drain 94 of the Nth cell is connected to the second electrode 108 described above. Wherein, the above-mentioned N is a positive integer, such as 1, 2 or 9.

In the embodiment of the present application, the sub-pixel unit 104 is covered with the first electrode 105 , and a thin-film encapsulation layer 113 and a polyimide film layer 114 are sequentially stacked on the first electrode 105 in the projection area of the sub-pixel unit 104 . , to realize the encapsulation of the sub-pixel unit.

In the embodiment of the present application, because the electrochromic layer 106 is located between the touch driving electrode 107 and the first electrode 105 located on the display defining portion 103, and the electrochromic layer 106 can undergo a reversible color changing reaction under the action of an electric field, Therefore, when the above-mentioned display substrate 10 is applied to the display panel 20 , when the screen of the display panel 20 is off, a voltage that reaches the discoloration voltage value of the electrochromic layer 106 can be applied between the touch driving electrodes 107 and the first electrodes 105 . , that is, the electrochromic layer 106 can be adjusted for discoloration;

At the same time, because the first electrode 105, the electrochromic layer 106 and the touch driving electrode 107 are stacked in sequence on the side of each pixel defining portion 103 away from the substrate, the color of the electrochromic layer 106 at different positions is controlled to change the color. That is, the entire display panel 20 can be rendered colorful;

In addition, because the electrochromic layer 106 will not consume power when the color does not change, the power consumption of the above-mentioned multi-color pattern presentation method is much lower than that of the existing screen saver method.

Wherein, because the first electrodes 105 and the touch driving electrodes 107 are both inherent electrode structures of the existing display substrate 10, and when the display panel 20 is in an off-screen state, the first electrodes 105 do not need to be used for the display panel. 20. The display screen is powered, and the touch sensing electrodes 107 do not need to be used for sensing touch operations. Therefore, the realization of the color change adjustment of the electrochromic layer 106 does not need to increase the electrode structure, and will not affect the original display function and touch of the display panel 20. control function.

Optionally, in the embodiment of the present application, since the touch driving electrodes 107 of the touch layer 110 are borrowed, a plurality of touch driving electrodes 107 are generally connected in series, for example, in a row arrangement or a column arrangement. The plurality of touch driving electrodes 107 connected in series are controlled to be energized, so as to uniformly adjust the color change of the plurality of electrochromic layers 106 corresponding to the plurality of touch driving electrodes 107 connected in series. Among them, multiple or all touch sensing electrodes 107 can be controlled to be energized at the same time, and the voltages energized by each touch sensing electrode 104 can be the same or different, so that the electrochromic layer at the corresponding position can be controlled according to the arrangement of the touch sensing electrodes 107 106 performs color change, so that the entire display panel 20 presents a colorful state.

For example, in the case where a plurality of touch driving electrodes 107 are connected in series and arranged in a row, by controlling the touch driving electrodes 107 in different rows to be turned on with power supplies with different voltages, the touch driving electrodes 107 corresponding to the different rows can be made to correspond to each other. The electrochromic layers 106 of different rows of different color changes are performed, so as to realize long-term color screen display.

In the embodiment of the present application, the electrochromic layer 106 includes an electrochromic material sub-layer 61 , an ion-conducting sub-layer 62 and an ion-storing sub-layer 63 that are stacked in sequence. The ion conduction sublayer 66 is located between the electrochromic material sublayer 61 and the ion storage sublayer 62 , and the ion conduction sublayer 63 is in direct contact with the electrochromic material sublayer 61 and the ion storage sublayer 62 .

Among them, the optical properties of the material of the electrochromic material layer 106, such as reflectivity, transmittance, and absorptivity, undergo a stable and reversible color change phenomenon under the action of an external electric field, which may be an inorganic electrochromic material or an organic electrochromic material. Electrochromic materials. Optionally, the material of the above-mentioned electrochromic material sub-layer 61 may specifically be a polypyrrole-based electrochromic material, a polythiophene-based electrochromic material, a polyfuran-based electrochromic material, and a polybenzdole-based electrochromic material. one or more of. Polyaniline can be formed by electrochemical processes or chemical oxidation of aniline; in different oxidation states, polyaniline can appear as pale yellow or dark green/black.

The ion-conducting sub-layer 62 allows ions to move between the electrochromic sub-layer 61 and the ion-storing sub-layer 63, but prevents electrons from passing through, that is, the ion-conducting sub-layer 62 conducts ions but does not conduct electrons. Can be solid, liquid or colloidal.

Among them, the ion storage sub-layer 63 has the function of storing ions and supplying required ions in the process of discoloration, so as to balance the total amount of electric charges. The ion storage sub-layer 63 can also use an electrochromic material whose performance is opposite to that of the electrochromic material of the electrochromic material sub-layer 61, and can play a role of ion complementation in the process of color change.

Optionally, in an embodiment, the electrochromic material sub-layer 61 is electrically connected 105 to the first electrode, and the ion storage sub-layer 63 is electrically connected to the touch driving electrode 107 . In this embodiment, the electrochromic material sub-layer 61 is in contact with the first electrode 105 , and the ion storage sub-layer 63 is in contact with the touch driving electrode 107 , so that when the electrochromic layer 106 undergoes discoloration adjustment, it faces the substrate. The 101 side undergoes a discoloration reaction.

Optionally, in another embodiment, the ion storage sub-layer 63 is electrically connected to the first electrode 105 , and the electrochromic material sub-layer 61 is electrically connected to the touch driving electrode 107 . In this embodiment, the electrochromic material sub-layer 61 is in contact with the touch driving electrodes 107 , and the ion storage sub-layer 63 is in contact with the first electrode 105 , so that when the electrochromic layer 106 is adjusted for discoloration, it is far away from the substrate. The 101 side undergoes a discoloration reaction.

In the embodiment of the present application, the display substrate 20 further includes a touch layer 110; the touch layer is disposed on the electrochromic layer 106 and is electrically connected to the touch driving electrodes 107; optionally, the electrochromic material The sub-layer 61 is black or gray before electrochromic, and the electrochromic voltage of the electrochromic material sub-layer 61 is lower than the working voltage of the touch layer; wherein, the above working voltage is when the touch layer is in the working state. In this case, the voltage between the driving electrodes 107 and the first electrodes 105 is touched. The electrochromic material sub-layer 61 in the embodiment of the present application is black or gray before electrochromic, so that when the display panel 20 including the above-mentioned display substrate 10 is powered on and displayed, the black or gray electrochromic layer is used to control the electricity. The projection area of the electrochromic layer 106 is shielded from light to indicate the screen display effect; and the electrochromic voltage of the electrochromic material sub-layer 61 is lower than the operating voltage of the touch layer, which can ensure bright screen display and touch detection on the display panel 20 During operation, the electrochromic layer 106 will not undergo a discoloration reaction due to the electric field between the touch driving electrodes 107 and the first electrodes 105 , thereby affecting the display effect of the display panel 20 .

An embodiment of the present application further provides a display panel. Please continue to refer to FIG. 3 . The above-mentioned display panel 20 includes the above-mentioned display substrate 10 .

In the above-mentioned display panel, an electrochromic layer is added between the touch driving electrodes and the first electrode located on the display defining portion, because the electrochromic layer can undergo a reversible discoloration reaction under the action of an electric field, so it can be used in the display panel. When the screen is displayed, the electrochromic layer is adjusted in color by applying a voltage to the touch drive electrodes and the first electrode, so that the entire display panel presents a colorful state; in addition, because the color of the electrochromic layer does not change under the condition Power consumption is no longer consumed, and the power consumption of the above-mentioned colorful pattern presentation method is far lower than that of the existing screen saver method.

Optionally, as shown in FIG. 3 , the above-mentioned display panel 20 further includes a cover plate 111 and a touch layer 110 ; the above-mentioned cover plate 111 , the above-mentioned touch layer 110 and the above-mentioned display substrate 10 are stacked in sequence, and the above-mentioned cover plate 111 and the above-mentioned The touch layers 110 are bonded by optically transparent glue 112 . When the display panel 20 is in the display state, the electrochromic layer 106 is in a dark color state such as black or gray, which can shield the underlying thin film transistor 109 and other circuits from light. The removal of the polarizer in the display panel does not affect the display effect of the display panel, and makes the entire display panel thinner.

An embodiment of the present application further provides a method for driving a display panel, which is used for driving the above-mentioned display panel, wherein the method may include step 100 .

In the embodiment of the present application, the method is applied to an electronic device having a touch display panel, and the electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer) Mobile electronic devices such as mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc., can also be a personal computer (PC), television (television, TV), teller machine or self-service machine. Mobile electronic devices.

Step 100 , in a screen-off state, apply a first voltage between the touch-control driving electrodes and the first electrodes, so that the electrochromic layer changes from a primary color to a target color, and the primary color is black or grey.

In the above step 100, the first voltage is the color change voltage of the electrochromic material in the electrochromic layer. Because in the off-screen state, neither the first electrode nor the touch driving electrode need to supply power to the display screen of the display panel, so they can be used to provide an electric field for the color changing reaction of the electrochromic layer, and the touch driving electrode and the first electrode The first voltage that causes the electrochromic layer to undergo a color-changing reaction is applied between the two devices, so that the electrochromic layer changes from the primary color state of black or gray to the target color state, so that the entire display panel presents a colorful state; in addition, because the electrochromic layer is When the color does not change, no power is consumed, and the power consumption of the above-mentioned multi-color pattern presentation method is much lower than that of the existing screen saver method.

Optionally, in an embodiment, in the case where the electrochromic layer can be changed from primary colors to multiple colors by the action of electric fields of different intensities, the above step 100 specifically includes steps 111 to 113:

Step 111, in the screen-off state, determine the target color;

Step 112, determining a first voltage according to the corresponding relationship between the target color and the voltage value;

Step 113 , applying the first voltage between the touch driving electrodes and the first electrodes to change the electrochromic layer from a primary color to a target color, and the primary color is black or gray.

In the above step 111, the target color is the screen-on-screen display color preset by the user, that is, when entering the screen-off state, the color preset by the user is acquired as the target color.

In the above-mentioned step 112, the above-mentioned corresponding relationship is the corresponding relationship between the voltage value and the color determined in advance according to the electrochromic performance of the electrochromic layer, indicating that the electrochromic layer changes from the target color to the desired voltage value. . Therefore, after the target color is determined, the target voltage can be determined as the first voltage according to the above-mentioned corresponding relationship.

In the above step 113 , by applying the first voltage between the touch driving electrodes and the first electrodes, the electrochromic layer between the touch driving electrodes and the first electrodes can undergo a color change reaction under the action of the electric field, and Change to target color.

The above-mentioned embodiment is applicable to the scene where a single electrochromic layer can change the value of different colors through the action of different electric fields. The corresponding first voltage can change the electrochromic layer to different color states.

Optionally, in an embodiment, the above driving method further includes steps 200 to 300:

Step 200: In the case of receiving a bright-screen signal, continuously apply a second voltage for a preset duration between the touch drive electrodes and the first electrodes, so that the electrochromic layer is released from the target by the electrochromic layer. The color returns to the primary color; wherein, the second voltage and the first voltage are equal in magnitude and opposite in direction.

In the above step 200, in the case of receiving the bright screen signal, it means that the user needs to use the display panel, but because the electrochromic layer is still in the target color state at this time, and the target color is generally in the color state, in order not to affect the display panel. For normal display, the electrochromic layer needs to be restored to the primary color state of black or gray, so the second voltage for a preset period of time between the touch driving electrodes and the first electrodes is continued, because the second voltage and the first The voltages are equal in magnitude and opposite in direction, that is, the electrochromic layer can be restored from the target color state to the primary color state.

Among them, because the electrochromic layer needs to continue to act under the color-changing voltage for a preset period of time to complete the color-changing reaction, when the electrochromic layer is controlled to return to the primary color, it is necessary to control the above-mentioned second voltage to continue for a preset period of time, so that the electrochromic layer is controlled for a preset period of time. The layer may receive the electric field action corresponding to the second voltage for a preset duration to complete the color changing reaction. The above preset time period is determined by the electrochromic material in the electrochromic layer.

Step 300: When the electrochromic layer is restored to the primary color, apply a touch driving signal to the touch layer electrically connected to the touch driving electrodes, so as to connect the touch driving electrodes and all the touch driving electrodes. A third voltage is formed between the first electrodes; wherein, the third voltage is smaller than the first voltage.

In the above step 300, the touch driving signal is a driving signal for causing the touch layer to enter a touch sensing state. Since the electrochromic layer will not affect the display of the display panel when the electrochromic layer is restored to the primary color state, a touch driving signal can be applied to the touch layer electrically connected to the touch driving electrodes, and the touch driving signal can be applied to the touch control layer. The drive signal will form a third voltage between the touch drive electrodes and the first electrodes, and the third voltage is lower than the first voltage, that is, when the touch layer enters the touch sensing state, the display panel also enters the normal display state. When the electric field between the touch driving electrodes and the first electrodes is used, the electrochromic layer will not cause a discoloration reaction, which avoids the electrochromic layer changing to other colors except black and gray when the display panel is normally displayed. A problem that affects the display effect.

In the above-mentioned embodiment, when the screen bright signal is received, a second voltage is applied to the touch drive electrodes and the first electrodes to restore the electrochromic layer to a black or gray state, and then the touch layer is driven to enter the touch state. The sensing state is controlled to avoid the problem that the display effect of the display panel is affected by the electrochromic layer displaying other colors except black and gray when the display panel is normally displayed.

Optionally, an embodiment of the present application further provides an electronic device, including the above-mentioned display panel, a processor, a memory, a program or instruction stored in the memory and executable on the processor, and the program or instruction is executed by the processor. When executed, each process of the above-mentioned embodiment of the display panel driving method is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.

It should be noted that the electronic devices in the embodiments of the present application include the aforementioned mobile electronic devices and non-mobile electronic devices.

FIG. 4 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 400 includes but is not limited to: a radio frequency unit 4001, a network module 4002, an audio output unit 4003, an input unit 4004, a sensor 4005, a display unit 4006, a user input unit 4007, an interface unit 4008, a memory 4009, a processor 4010, etc. part.

Those skilled in the art can understand that the electronic device 40 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 4010 through a power management system, so as to manage charging, discharging, and power management through the power management system. consumption management and other functions. The structure of the electronic device shown in FIG. 4 does not constitute a limitation to the electronic device. The electronic device may include more or less components than the one shown, or combine some components, or arrange different components, which will not be repeated here. .

The display panel 40061 included in the display unit 4006 includes the above-mentioned display substrate in the embodiment of the present application;

The processor 4010 is configured to apply a first voltage between the touch drive electrodes and the first electrodes in a screen-off state, so that the electrochromic layer changes from a primary color to a target color, the primary color in black or grey.

In the electronic device provided by the embodiments of the present application, in the screen-off state, the electrochromic layer is changed from black or gray by applying a first voltage between the touch drive electrode and the first electrode that causes the electrochromic layer to undergo a color changing reaction. The state of the primary color changes to the state of the target color, so that the entire display panel presents a colorful state; in addition, because the electrochromic layer will no longer consume power when the color does not change, the power consumption of the above-mentioned colorful pattern presentation method is much lower. The power consumption of the existing screen saver.

Optionally, the processor 4010 is further configured to continuously apply a second voltage for a preset duration between the touch drive electrodes and the first electrodes in the case of receiving a bright screen signal, so that the The electrochromic layer is restored from the target color to the primary color; wherein, the second voltage is equal to the first voltage in magnitude and opposite in direction; after the electrochromic layer is restored to the primary color In this case, a touch driving signal is applied to the touch layer electrically connected to the touch driving electrodes to form a third voltage between the touch driving electrodes and the first electrodes; wherein the first The third voltage is less than the first voltage.

Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the display panel driving method is implemented, and can achieve The same technical effect, in order to avoid repetition, will not be repeated here.

Wherein, the processor is the processor in the electronic device described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

An embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running a program or an instruction to implement the above embodiment of the display panel driving method and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present application can be embodied in the form of computer software products that are essentially or contribute to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk , CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A display substrate, comprising: a substrate and a pixel defining layer disposed on the substrate;

The pixel defining layer includes a plurality of pixel defining portions arranged at intervals, and each of the pixel defining portions is provided with an electrochromic layer and a touch driving electrode stacked in sequence on one side away from the substrate;

The electrochromic layer can undergo a color changing reaction under the action of the electric field of the first electrode and the touch driving electrode.
The display substrate according to claim 1, wherein a sub-pixel unit is disposed in an area between the adjacent pixel defining portions;

the sub-pixel unit is electrically connected to the first electrode;

The display substrate further includes a plurality of thin film transistors, the plurality of thin film transistors are located between the substrate and the pixel defining layer, and each of the sub-pixel units is electrically connected to one of the sub-pixel units via a corresponding second electrode The thin film transistor is used for applying a driving signal to the second electrode.
The display substrate according to claim 1, wherein the electrochromic layer comprises an electrochromic material sub-layer, an ion-conducting sub-layer and an ion-storing sub-layer which are stacked in sequence.
The display substrate of claim 3, wherein the electrochromic material sublayer is electrically connected to the first electrode, and the ion storage sublayer is electrically connected to the touch driving electrode.
The display substrate of claim 3, wherein the ion storage sublayer is electrically connected to the first electrode, and the electrochromic material sublayer is electrically connected to the touch driving electrode.
The display substrate according to claim 3, wherein the display substrate further comprises a touch layer;

the touch control layer is disposed on the electrochromic layer and is electrically connected with the touch control driving electrodes;

The electrochromic material sub-layer is black or gray before electrochromic, and the electrochromic voltage of the electrochromic material sub-layer is lower than the working voltage of the touch layer;

The operating voltage is a voltage between the touch driving electrodes and the first electrodes when the touch control layer is in an operating state.
The display substrate according to claim 3, wherein the material of the electrochromic material sub-layer is polyaniline, polypyrrole-based electrochromic material, polythiophene-based electrochromic material, polyfuran-based electrochromic material and One or more of polybenzazole electrochromic materials.
A display panel comprising the display substrate according to any one of claims 1-7.
The display panel according to claim 8, wherein the display panel further comprises a cover plate and a touch layer;

The cover plate, the touch layer and the display substrate are stacked in sequence, and the cover plate and the touch layer are bonded by optical transparent glue.
A display panel driving method for driving the display panel according to any one of claims 8 to 9, the display panel driving method comprising:

In the screen-off state, a first voltage is applied between the touch driving electrodes and the first electrodes, so that the electrochromic layer changes from a primary color to a target color, and the primary color is black or gray.
The display panel driving method according to claim 10, further comprising:

In the case of receiving a bright-screen signal, a second voltage for a preset duration is continuously applied between the touch driving electrodes and the first electrodes, so that the electrochromic layer is restored from the target color to the primary color; wherein, the second voltage and the first voltage are equal in magnitude and opposite in direction;

When the electrochromic layer is restored to the primary color, a touch driving signal is applied to the touch layer electrically connected with the touch driving electrodes, so as to connect the touch driving electrodes and the first touch driving electrodes. A third voltage is formed between the electrodes; wherein, the third voltage is smaller than the first voltage.
An electronic device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions when executed by the processor implement the invention as claimed in claim 10 or 11 The steps of the display panel driving method.
A readable storage medium on which programs or instructions are stored, and when the programs or instructions are executed by a processor, implement the steps of the display panel driving method according to claim 10 or 11.
A chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running a program or an instruction to implement the display panel driving method as claimed in claim 10 or 11 .