CN112965313B - Display substrate, display panel and driving method of display panel - Google Patents
Display substrate, display panel and driving method of display panel Download PDFInfo
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- CN112965313B CN112965313B CN202110335199.3A CN202110335199A CN112965313B CN 112965313 B CN112965313 B CN 112965313B CN 202110335199 A CN202110335199 A CN 202110335199A CN 112965313 B CN112965313 B CN 112965313B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
- G02F1/1516—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
- G02F1/15165—Polymers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
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- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application discloses a display substrate, a display panel and a driving method thereof, and belongs to the technical field of display. Wherein, the display substrate includes: comprises a substrate and a pixel defining layer arranged on the substrate; the pixel defining layer comprises a plurality of pixel defining parts which are arranged at intervals, and a first electrode, an electrochromic layer and a second electrode are arranged on one side, away from the substrate, of each pixel defining part in a lamination mode; the pixel defining layer is located between the substrate and the first electrode; the electrochromic layer can undergo a color change reaction under the action of an electric field of the first electrode and the second electrode.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display substrate, a display panel and a driving method thereof.
Background
In the prior art, a display screen of an electronic device is generally in a monotonous black state when in a screen-off state.
The display screen is in the too monotonous problem of display under the screen-extinguishing state, although can present colorful pattern through the mode of display screen protection, nevertheless because the display screen still is in operating condition when the display screen is guaranteed, above-mentioned mode tends to increase the display screen consumption, leads to the long reduction of the service life of battery electric quantity, and then influences user experience.
Disclosure of Invention
The embodiment of the application aims to provide a display substrate which can solve the problem that the existing display screen cannot be used with low power consumption to display colors.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, embodiments of the present application provide a display substrate, including a substrate and a pixel defining layer disposed on the substrate;
the pixel defining layer comprises a plurality of pixel defining parts which are arranged at intervals, and a first electrode, an electrochromic layer and a second electrode are arranged on one side, away from the substrate, of each pixel defining part in a lamination mode;
the pixel defining layer is located between the substrate and the first electrode;
the electrochromic layer can undergo a color change reaction under the action of an electric field of the first electrode and the second electrode.
In a second aspect, embodiments of the present application provide a display panel, where the display panel includes a display substrate as described above.
In a third aspect, embodiments of the present application provide a driving method of a display panel, for driving the display panel as described above, where the driving method includes:
and in a screen-off state, applying a first voltage between the touch control driving electrode and the first electrode so as to change the electrochromic layer from a primary color to a target color, wherein the primary color is black or gray.
In a fourth aspect, embodiments of the present application provide an electronic device comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction implementing the steps of the method according to the first aspect when executed by the processor.
In a fifth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.
In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
In an embodiment of the present application, a display substrate includes a substrate and a pixel defining layer disposed on the substrate; the pixel defining layer comprises a plurality of pixel defining parts which are arranged at intervals, and each pixel defining part is provided with a pixel defining layer, a first electrode, an electrochromic layer and a second electrode in a lamination way at one side far away from the substrate; the pixel defining layer is located between the substrate and the first electrode; the electrochromic layer can generate a color change reaction under the action of an electric field of the first electrode and the second electrode. When the display substrate is applied to a display panel, the electrochromic layer can generate reversible color change reaction under the action of an electric field, so that when the display panel is in a screen-off state, the electrochromic layer can be subjected to color change adjustment by applying voltage to the first electrode and the second electrode, and the whole display panel is in a colorful state; in addition, because the electrochromic layer can not consume electric energy under the condition that the color is not changed, the power consumption of the multi-color pattern presentation mode is far lower than that of the existing screen protection mode.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a display panel according to an embodiment of the present disclosure;
FIG. 2 is an enlarged partial view of portion A of FIG. 1;
FIG. 3 is a schematic view in section B of FIG. 2;
FIG. 4 is another schematic cross-sectional view in the direction B of FIG. 2;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The display substrate provided by the embodiment of the application is described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 1 to 3, the display substrate 10 includes a substrate 101 and a pixel defining layer 102 disposed on the substrate 101; the pixel defining layer 102 includes a plurality of pixel defining portions 103 arranged at intervals, and each pixel defining portion 103 is provided with a first electrode 105, an electrochromic layer 106, and a second electrode 107 in order on a side away from the substrate 101; the electrochromic layer 106 may undergo a color change reaction under the electric field of the first electrode 105 and the second electrode 107.
The display substrate provided in this embodiment further includes a touch layer 110, where the touch layer is located on a side of the first electrode 105 away from the substrate 101 and on a side of the second electrode 107 away from the substrate 101, so as to avoid the influence of the setting of the electrochromic layer on the implementation of the function of the touch layer.
The touch layer 110 includes a touch driving electrode and a touch sensing electrode, the touch driving electrode is located at a side of the touch layer 110 facing the substrate 101, and the touch sensing electrode is located at a side of the touch layer 110 facing away from the substrate 101; when touch occurs, the distance between the touch driving electrode and the touch sensing electrode near the touch point is changed, so that the capacitive coupling between the touch driving electrode and the touch sensing electrode is influenced to generate a sensing signal, and 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 region between the adjacent pixel defining sections 103; the display substrate 10 further includes a plurality of thin film transistors 109, wherein the plurality of thin film transistors 109 are disposed between the substrate 101 and the pixel defining layer 102, each of the sub-pixel units 104 is electrically connected to one of the thin film transistors 109 via a corresponding third electrode 108, the thin film transistors 109 are used for applying a driving signal to the second electrode 108, and each of the sub-pixel units 104 is turned on or contacted with the first electrode 105 on a side away from the substrate 101, and then one of the first electrode 105 and the third electrode 108 is used as an anode, and the other of the first electrode 105 and the third electrode 108 is used as a cathode, and the switching action of the thin film transistors 109 is combined, so as to control the light emission or non-light emission of the corresponding sub-pixel unit. The sub-pixel unit 104 may be an OLED pixel sub-unit, and specifically may be a red pixel sub-unit, a green pixel sub-unit, or a blue pixel sub-unit. The cathode and the touch driving electrode may be made of one or more of silver Ag, copper Cu, magnesium Mg, aluminum Al, metal Mesh, metal oxide ITO, and indium tin oxide.
The 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 electrode 94, and an interlayer dielectric layer 95, which are sequentially formed over a substrate 101, and a source electrode (S-electrode) 96 and a drain electrode (D-electrode) 97 formed over the interlayer dielectric layer, and a planarization layer 98 covering the source electrode 96, the drain electrode 97, and the gate electrode 94; the third electrode 108 is connected to the drain 94.
Optionally, in a thin film transistor, the unit includes N sources 96, drains 97, and gates 94, where the drain 97 of the previous unit is connected to the gate 94 of the next unit, the source 96 of the first unit is connected to the anode of the control circuit, and the drain 94 of the nth unit is connected to the third electrode 108. Wherein N is a positive integer, for example, 1, 2 or 9.
In this embodiment, the sub-pixel unit 104 is covered with the first electrode 105, and a thin film packaging layer 113 and a polyimide thin film layer 114 are sequentially stacked on the first electrode 105, so as to realize packaging of the sub-pixel unit.
In this embodiment, since the electrochromic layer 106 is located between the second electrode 107 and the first electrode 105 located on the display defining portion 103, and the electrochromic layer 106 can undergo a reversible color change reaction under the action of an electric field, when the display substrate 10 is applied to the display panel 20, when the display panel 20 is turned off, a voltage reaching a color change voltage value of the electrochromic layer 106 can be applied between the second electrode 107 and the first electrode 105, so that the electrochromic layer 106 can be color-changed;
meanwhile, since the first electrode 105, the electrochromic layer 106 and the second electrode 107 are sequentially stacked on one side of each pixel defining portion 103 far away from the substrate, the whole display panel 20 can be in a colorful state by controlling the electrochromic layers 106 at different positions to change colors;
in addition, because the electrochromic layer 106 will not consume power any more without color change, the power consumption of the multi-color pattern display mode is far lower than that of the existing screen protection mode.
Because the first electrode 105 is an intrinsic electrode structure of the conventional display substrate 10, and because the first electrode 105 is not required to supply power to the display panel 20 when the display panel 20 is in the off-screen state, the second electrode 107 is a separately provided electrode for providing an electric field for the electrochromic layer to perform the color-changing reaction, the implementation of the color-changing adjustment of the electrochromic layer 106 does not affect the original display function of the display panel 20.
In this embodiment, the electrochromic layer 106 includes an electrochromic material sub-layer 61, an ion conducting sub-layer 62 and an ion storage sub-layer 63, which are stacked in sequence. Wherein the ion conducting sublayer 66 is located between the electrochromic material sublayer 61 and the ion storage sublayer 62, and the ion conducting sublayer 63 is in direct contact with both the electrochromic material sublayer 61 and the ion storage sublayer 62.
The optical properties of the material of the electrochromic material layer 106, such as reflectivity, transmittance, absorptivity, etc., undergo a stable and reversible color change under the action of an applied electric field, which may be an inorganic electrochromic material or an organic electrochromic material. Alternatively, the material of the electrochromic material sub-layer 61 may be one or more of polypyrrole electrochromic material, polythiophene electrochromic material, polyfuran electrochromic material and polybenzazole electrochromic material. Polyaniline can be formed by electrochemical processes or chemical oxidation of aniline; polyaniline may appear pale yellow or dark green/black in different oxidation states.
The ion conducting sub-layer 62 allows ions to move between the electrochromic sub-layer 61 and the ion storage sub-layer 63, but prevents electrons from passing through, i.e., the ion conducting sub-layer 62 conducts ions but does not conduct electrons, and may be solid, liquid or colloidal.
The ion storage sub-layer 63 has the function of storing ions and supplying the required ions during the color change process, thereby balancing the total charge. The ion storage sublayer 63 may also use an electrochromic material having properties opposite to those of the electrochromic material sublayer 61, and may perform ion complementation during the color change.
Alternatively, in one 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 second electrode 107. In the present 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 second electrode 107, so that a color change reaction is performed on the side close to the first electrode 105 when the electrochromic layer 106 is subjected to a color change adjustment.
Alternatively, 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 second electrode 107. In the present embodiment, the electrochromic material sub-layer 61 is in contact with the second electrode 107, and the ion storage sub-layer 63 is in contact with the first electrode 105, so that a color change reaction is performed on the side away from the first electrode 105 when the electrochromic layer 106 performs a color change adjustment.
Alternatively, the electrochromic material sub-layer 61 may be black or gray prior to electrochromic. 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 display substrate 10 performs power-on display, the projection area of the electrochromic layer 106 is shaded by the electrochromic layer that is black or gray, and the screen display effect is prompted.
Alternatively, in one embodiment, as shown in fig. 3, in the display substrate provided in the embodiment of the present application, the electrochromic layer 106 is located on a side of the first electrode 105 facing the substrate 101; the method comprises the steps of carrying out a first treatment on the surface of the Accordingly, since the first electrode 105, the electrochromic layer 106 and the second electrode layer 107 are stacked, the second electrode 107 is located on the side of the electrochromic layer 106 facing the substrate 101. In the above embodiment, the electrochromic layer 106 and the second electrode 107 can be embedded in the pixel defining portion 103, and the color change function can be realized without increasing the thickness of the display substrate.
Alternatively, in one embodiment, as shown in fig. 4, in the display substrate 10 provided in the embodiment of the present application, the electrochromic layer 106 is located on a side of the first electrode 105 away from the substrate 101; accordingly, since the first electrode 105, the electrochromic layer 106 and the second electrode 107 are stacked, the second electrode 107 is located on a side of the electrochromic layer 106 away from the substrate 101. In the above embodiment, the electrochromic layer 106 and the second electrode 107 may be embedded into the encapsulation layer on the upper portion of the first electrode 105, so that not only the color changing function can be achieved without increasing the thickness of the display substrate, but also the electrochromic layer is closer to the surface layer of the display substrate, so that the color display effect of the electrochromic layer is better.
In addition, the embodiment of the present application further provides a display panel, and please continue to refer to fig. 3 or 4, where the display panel 20 includes the display substrate 10.
In the display panel, the electrochromic layer is added between the second electrode and the first electrode positioned on the display defining part, and the electrochromic layer can generate reversible color change reaction under the action of an electric field, so that when the display panel is in a screen-off state, the electrochromic layer is subjected to color change adjustment by applying voltage to the second electrode and the first electrode, and the whole display panel is in a colorful state; in addition, because the electrochromic layer can not consume electric energy under the condition that the color is not changed, the power consumption of the multi-color pattern presentation mode is far lower than that of the existing screen protection mode.
Optionally, as shown in fig. 3 or 4, the display panel 20 further includes a cover 111 and a touch layer 110; the cover 111, the touch layer 110, and the display substrate 10 are stacked in this order, and the cover 111 and the touch layer 110 are bonded to each other by an optically transparent adhesive 112. When the display panel 20 is in a display state, the electrochromic layer 106 is in a dark color state such as black or gray, and can shade wires of the underlying thin film transistor 109, so that polarizers in the display panel such as the conventional micro light emitting diode display panel or the quantum dot display panel can be removed, the display effect of the display panel is not affected, and the whole display panel is thinner.
The embodiment of the application also provides a method for driving a display panel, which is used for driving the display panel, wherein the method may include step 100.
In the embodiment of the application, the method is applied to an electronic device with a touch display panel, where the electronic device may be a mobile electronic device such as a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), or a non-mobile electronic device such as a personal computer (personal computer, PC), a Television (TV), a teller machine or a self-service machine.
And 100, in a screen-off state, applying a first voltage between the touch control driving electrode and the first electrode so as to change the electrochromic layer from a primary color to a target color, wherein the primary color is black or gray.
In step 100, the first voltage is a color change voltage of the electrochromic material in the electrochromic layer. In the screen-off state, the first electrode does not need to supply power to the display picture of the display panel, so that the first electrode can be used for providing an electric field effect for the color change reaction of the electrochromic layer, and the electrochromic layer is changed from the black or gray primary color state to the target color state by applying a first voltage between the second electrode and the first electrode, so that the whole display panel is in a colorful state; in addition, because the electrochromic layer can not consume electric energy under the condition that the color is not changed, the power consumption of the multi-color pattern presentation mode is far lower than that of the existing screen protection mode.
Alternatively, in one embodiment, in the case that the electrochromic layer is changeable to a plurality of colors by the primary colors through the action of electric fields of different intensities, the step 100 specifically includes steps 111 to 113:
step 111, determining a target color in a screen-off state;
step 112, determining a first voltage according to the corresponding relation between the target color and the voltage value;
step 113, applying the first voltage between the second electrode and the first electrode to change the electrochromic layer from a primary color to a target color, wherein the primary color is black or gray.
In the step 111, the target color is a preset screen display color, that is, when entering the screen state, the color preset by the user is obtained as the target color.
In the step 112, the correspondence between the voltage value and the color determined in advance according to the electrochromic property of the electrochromic layer indicates that the electrochromic layer changes from the value to the target color to the required voltage value. Thus, after the target color is determined, the target voltage can be determined as the first voltage based on the correspondence relation.
In step 113, a first voltage is applied between the second electrode and the first electrode, so that the electrochromic layer between the second electrode and the first electrode undergoes a color change reaction under the action of an electric field and changes to a target color.
The embodiment is suitable for scenes in which the single electrochromic layer can change different colors through different electric field action change values, and according to the corresponding relation between the target color to be changed and the voltage value, the corresponding first voltage is applied between the second electrode and the first electrode, so that the electrochromic layer can be changed to different color states.
Optionally, in one embodiment, the driving method further includes steps 200 to 300:
step 200, under the condition of receiving a bright screen signal, continuously applying a second voltage between the second electrode and the first electrode for a preset time period so as to enable the electrochromic layer to recover from the target color to the primary color; the second voltage is equal to the first voltage in magnitude and opposite in direction.
In the above step 200, when the bright screen signal is received, it is stated that the user needs to use the display panel, but because the electrochromic layer is still in the target color state, and the target color is generally in the color state, in order not to affect the normal display of the display panel, it is necessary to restore the electrochromic layer to the black or gray primary color state, so that the second voltage between the second electrode and the first electrode is maintained for a preset period of time, and because the second voltage is equal to the first voltage and opposite to the first voltage, the electrochromic layer can be restored from the target color state to the primary color state.
The electrochromic layer needs to continuously act for a preset time period under the color-changing voltage to complete the color-changing reaction, so that the second voltage needs to be controlled to continuously act for a preset time period when the electrochromic layer is controlled to restore to the original color, and the electrochromic layer can receive the electric field action corresponding to the second voltage for the preset time period to complete the color-changing reaction. The predetermined time period is determined by the electrochromic material in the electrochromic layer.
After the electrochromic layer is restored to the primary color, the electrochromic layer does not influence the display of the display panel under the condition that the electrochromic layer is restored to the primary color state, so that the first electrode can be reused to supply power to each sub-pixel unit, the display panel enters a normal display state, and the problem that the display effect is influenced due to the fact that the electrochromic layer is changed to other colors except black and gray when the display panel normally displays is avoided.
In the above embodiment, when the bright screen signal is received, the second voltage is applied to the touch driving electrode and the first electrode, so that the electrochromic layer is restored to the black or gray state, and then the touch layer is driven to enter the touch sensing state, so that the problem that the display effect of the display panel is affected due to the fact that the electrochromic layer displays other colors except black and gray during normal display of the display panel is avoided.
Optionally, the embodiment of the present application further provides an electronic device, including the above display panel, a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction when executed by the processor implements each process of the embodiment of the driving method of the display panel, and the process can achieve the same technical effect, so that repetition is avoided and redundant description is omitted here.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 5 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 500 includes, but is not limited to: a radio frequency unit 5001, a network module 5002, an audio output unit 5003, an input unit 5004, a sensor 5005, a display unit 5006, a user input unit 5007, an interface unit 5008, a memory 5009, a processor 5010, and the like.
Those skilled in the art will appreciate that the electronic device 50 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 5010 via a power management system to perform functions of managing charging, discharging, and power consumption by the power management system. The electronic device structure shown in fig. 5 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The display unit 5006 includes a display panel 50061, which in the embodiment of the application includes the above-described display substrate;
a processor 5010 for applying a first voltage between the first electrode and the second electrode in a off-screen state to change the electrochromic layer from a primary color to a target color, wherein the primary color is black or gray.
In the electronic device provided by the embodiment of the application, in the screen-off state, the electrochromic layer is changed from the black or gray primary color state to the target color state by applying the first voltage for enabling the electrochromic layer to perform the color-changing reaction between the touch driving electrode and the first electrode, so that the whole display panel is in a colorful state; in addition, because the electrochromic layer can not consume electric energy under the condition that the color is not changed, the power consumption of the multi-color pattern presentation mode is far lower than that of the existing screen protection mode.
Optionally, the processor 5010 is further configured to continuously apply a second voltage between the first electrode and the second electrode for a preset period of time in a case of receiving a bright screen signal, so that the electrochromic layer is restored from the target color to the primary color; the second voltage is equal to the first voltage in magnitude and opposite in direction.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the embodiment of the display panel driving method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, so as to implement each process of the embodiment of the driving method of the display panel, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises 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 an opposite order depending on the functions involved, e.g., 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 certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (10)
1. A display substrate, comprising a substrate and a pixel defining layer disposed on the substrate;
the pixel defining layer comprises a plurality of pixel defining parts which are arranged at intervals, and a first electrode, an electrochromic layer and a second electrode are arranged on one side, away from the substrate, of each pixel defining part in a lamination mode; a sub-pixel unit is arranged in a region between adjacent pixel defining parts;
the pixel defining layer is positioned between the substrate and the thin film packaging layer;
the electrochromic layer can undergo a color change reaction under the action of an electric field of the first electrode and the second electrode; wherein the electrochromic layer is positioned on one side of the first electrode facing the substrate, the second electrode is positioned on one side of the electrochromic layer facing the substrate, and the electrochromic layer and the second electrode are embedded inside the pixel defining part; or, the electrochromic layer is positioned on one side of the first electrode away from the substrate, the second electrode is positioned on one side of the electrochromic layer away from the substrate, and the electrochromic layer and the second electrode are embedded into the thin film packaging layer above the first electrode.
2. The display substrate of claim 1, wherein the display substrate comprises a transparent substrate,
the display substrate further comprises a plurality of thin film transistors, the thin film transistors are located between the substrate and the pixel defining layer, each sub-pixel unit is electrically connected with the first electrode, each sub-pixel unit is electrically connected with one thin film transistor through a corresponding third electrode, and the thin film transistors are used for applying driving signals to the third electrode.
3. The display substrate according to claim 1, wherein the electrochromic layer comprises an electrochromic material layer, an ion conducting layer, and an ion storage layer, which are stacked in this order.
4. A display substrate according to claim 3, wherein the electrochromic material layer is electrically connected to the first electrode and the ion storage layer is electrically connected to the second electrode.
5. A display substrate according to claim 3, wherein the ion storage layer is electrically connected to the first electrode and the electrochromic material layer is electrically connected to the second electrode.
6. A display substrate according to claim 3, wherein the material of the electrochromic material layer is one or more of polyaniline, polypyrrole-based electrochromic material, polythiophene-based electrochromic material, polyfuran-based electrochromic material and polybenzazole-based electrochromic material.
7. A display panel comprising the display substrate according to any one of claims 1 to 6.
8. The display panel of claim 7, further comprising a cover plate and a touch layer;
the cover plate, the touch layer and the display substrate are sequentially stacked, and the cover plate is bonded with the touch layer through transparent insulating glue.
9. A display panel driving method for driving the display panel according to any one of claims 7 to 8, characterized by comprising:
applying a first voltage between the first electrode and the second electrode in a screen-off state to change the electrochromic layer from a primary color to a target color, wherein the primary color is black or gray; the first voltage is determined by a correspondence between the target color and a voltage value.
10. The method for driving a display panel according to claim 9, further comprising:
continuously applying a second voltage between the first electrode and the second electrode for a preset time period under the condition of receiving a bright screen signal, so that the electrochromic layer is restored to the primary color from the target color; the second voltage is equal to the first voltage in magnitude and opposite in direction.
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| CN202110335199.3A CN112965313B (en) | 2021-03-29 | 2021-03-29 | Display substrate, display panel and driving method of display panel |
| PCT/CN2022/082724 WO2022206541A1 (en) | 2021-03-29 | 2022-03-24 | Display substrate, display panel, display panel driving method, and electronic device |
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| CN202110335199.3A CN112965313B (en) | 2021-03-29 | 2021-03-29 | Display substrate, display panel and driving method of display panel |
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| CN112965313B (en) * | 2021-03-29 | 2023-07-21 | 维沃移动通信有限公司 | Display substrate, display panel and driving method of display panel |
| CN115616820B (en) * | 2022-06-14 | 2023-10-20 | 荣耀终端有限公司 | Peep-proof display screen, electronic equipment and peep-proof method |
| WO2024073769A1 (en) * | 2022-09-30 | 2024-04-04 | Screen Skinz, Inc. | A privacy screen protector having an image and a method of making thereof |
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| WO2022206541A1 (en) | 2022-10-06 |
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