CN112130360A - Display panel, display device and display method - Google Patents
Display panel, display device and display method Download PDFInfo
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- CN112130360A CN112130360A CN202011048607.9A CN202011048607A CN112130360A CN 112130360 A CN112130360 A CN 112130360A CN 202011048607 A CN202011048607 A CN 202011048607A CN 112130360 A CN112130360 A CN 112130360A
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- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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Abstract
The application discloses display panel, display device and display method, display panel includes: the display module and the visual angle control box are oppositely arranged; the viewing angle control box includes: a liquid crystal layer, a first electrode disposed on a first side of the liquid crystal layer, and a second electrode disposed on a second side of the liquid crystal layer; the first electrode and the second electrode are used for being applied with preset signals, the preset signals are stopped being applied under the condition that the visual angle control box is pressed, the reset signals are applied, the reset signals are stopped being applied when the duration that the visual angle control box is stopped being pressed reaches the preset duration, and the preset signals are continuously applied; the preset signal is used for enabling the long axis direction of the liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal, and the reset signal is used for enabling the liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state. The display panel and the display method can solve the problem that the display effect of the display panel is not good due to the fact that liquid crystal molecules are arranged disorderly.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display panel, a display device and a display method.
Background
With the continuous progress of display technologies, the visual angle range of the display panel is gradually increased, people can enjoy the visual experience brought by a large visual angle, and hope that the display content can be observed from all visual angles in some application scenes, and at the moment, the display panel needs to be switched to a narrow visual angle display mode. For example, in an on-board display system, when a driver drives a vehicle, the driver should be prevented from viewing a display panel that is not related to driving, so as to avoid affecting driving safety.
In the related art, switching between the wide viewing angle display mode and the narrow viewing angle display mode may be achieved by a viewing angle control box. The visual angle control box comprises a liquid crystal layer, and switching between a wide visual angle display mode and a narrow visual angle display mode can be realized by changing the long axis direction of liquid crystal molecules in the liquid crystal layer.
In both the wide viewing angle display mode and the narrow viewing angle display mode, the long axis directions of the liquid crystal molecules in the liquid crystal layer need to be kept consistent to realize normal display. However, when the surface of the viewing angle control box is pressed by an external force, the liquid crystal molecules are disorderly arranged, that is, the long axis directions of the liquid crystal molecules in the liquid crystal layer are not consistent, and the display effect of the display panel is affected.
Disclosure of Invention
The embodiment of the application provides a display panel, a display device and a display method, which can solve the problem that when the surface of a visual angle control box is pressed by external force, the display effect of the display panel is not good due to disorder arrangement of liquid crystal molecules.
In one aspect, an embodiment of the present application provides a display panel, including: the display module comprises a display module and a visual angle control box which are arranged oppositely, wherein the visual angle control box is positioned on one side of a light-emitting surface of the display module;
the viewing angle control box includes: a liquid crystal layer, a first electrode disposed on a first side of the liquid crystal layer, and a second electrode disposed on a second side of the liquid crystal layer, the first side being opposite to the second side;
the first electrode and the second electrode are used for being applied with a preset signal, stopping being applied with the preset signal and being applied with a reset signal under the condition that the visual angle control box is pressed, and stopping being applied with the reset signal and continuing being applied with the preset signal under the condition that the duration of the visual angle control box stopping being pressed reaches a preset duration;
the preset signal is used for enabling the long axis direction of liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal, and the reset signal is used for enabling the liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state.
In one or more embodiments of the present application, the display panel further includes:
and the pressure detection module is used for detecting whether the visual angle control box is pressed or not.
In one or more embodiments of the present application, the first electrode and the second electrode start to be applied with the reset signal during the pressing of the viewing angle control box.
In one or more embodiments of the present application, when the viewing angle control box stops being pressed, the first electrode and the second electrode start to be applied with the reset signal.
In one or more embodiments of the present application, the viewing angle control box further includes:
the first substrate is positioned on one side of the light-emitting surface of the display module;
the second substrate is positioned on one side of the first substrate, which is far away from the display module, and the liquid crystal layer is positioned between the first substrate and the second substrate;
wherein, in the case that the liquid crystal molecules in the liquid crystal layer are negative liquid crystal molecules, the initial arrangement state includes that the long axis direction of the liquid crystal molecules in the liquid crystal layer is vertical to the first substrate;
in a case where the liquid crystal molecules in the liquid crystal layer are positive liquid crystal molecules, the initial alignment state includes a long axis direction of the liquid crystal molecules in the liquid crystal layer being parallel to the first substrate.
In one or more embodiments of the present application, the preset signal includes a signal for making an angle between a long axis direction of liquid crystal molecules in the liquid crystal layer and the first substrate less than 90 °.
In one or more embodiments of the present application, a voltage difference between the first electrode and the second electrode is zero during a period in which the reset signal is applied to the first electrode and the second electrode.
In one or more embodiments of the present application, the liquid crystal layer further includes dye molecules, and a long axis direction of the dye molecules in the liquid crystal layer coincides with a long axis direction of the liquid crystal molecules when the viewing angle controlling cell is not pressed.
In another aspect, an embodiment of the present application provides a display device including the display panel of any one of the above.
In another aspect, an embodiment of the present application provides a display method applied to the display device, where the method includes:
detecting whether the visual angle control box is pressed or not during the period of applying a preset signal to the first electrode and the second electrode, wherein the preset signal is used for enabling the long axis of liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal;
under the condition that the visual angle control box is detected to be pressed, stopping applying the preset signal to the first electrode and the second electrode, and applying a reset signal, wherein the reset signal is used for enabling liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state;
and under the condition that the pressing time of the visual angle control box reaches a preset time, stopping applying the reset signal to the first electrode and the second electrode, and continuously applying the preset signal.
In one or more embodiments of the present application, the stopping the application of the preset signal to the first electrode and the second electrode, and applying a reset signal includes:
and stopping applying the preset signal to the first electrode and the second electrode and applying the reset signal while the visual angle control box is pressed.
In one or more embodiments of the present application, the stopping the application of the preset signal to the first electrode and the second electrode, and applying a reset signal includes:
and when the visual angle control box is pressed, stopping applying the preset signal to the first electrode and the second electrode, and applying the reset signal.
In this application embodiment, display panel includes relative display module assembly and the visual angle control box that sets up, and the visual angle control box includes the liquid crystal layer, sets up the first electrode at the first side of liquid crystal layer and sets up the second electrode at the second side of liquid crystal layer. The first electrode and the second electrode are used for being applied with preset signals, so that the long axis directions of liquid crystal molecules in the liquid crystal layer are parallel, and the display panel can display normally. When the visual angle control box is pressed, the liquid crystal molecules in the liquid crystal layer are indicated to be disordered, and the signals applied to the first electrode and the second electrode are switched from the preset signals to the reset signals, so that the liquid crystal molecules in the liquid crystal layer are changed from the disordered state to the initial arrangement state. Under the condition that the time length for which the visual angle control box stops being pressed reaches the preset time length, the first electrode and the second electrode stop being applied with the reset signal, and continue to be applied with the preset signal, so that the liquid crystal molecules in the liquid crystal layer are changed from the initial arrangement state to the normal state before disorder, the long axis directions of the liquid crystal molecules in the liquid crystal layer are consistent, and the display effect of the display panel is prevented from being influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a voltage difference waveform between a first electrode and a second electrode according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a voltage difference waveform between a first electrode and a second electrode according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a liquid crystal molecule in a tilted alignment state according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a liquid crystal molecule in a disordered state according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a liquid crystal molecule in a vertical alignment state according to an embodiment of the present application;
fig. 7 is a schematic diagram of a pressure waveform and a voltage difference waveform between a first electrode and a second electrode to which a viewing angle control box is subjected according to an embodiment of the present application;
fig. 8 is a schematic diagram of a pressure waveform and a voltage difference waveform between a first electrode and a second electrode to which a viewing angle control box is subjected according to another embodiment of the present application;
FIG. 9 is a schematic diagram of a liquid crystal molecule in a lying arrangement state according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a display panel according to another embodiment of the present application;
fig. 11 is a flowchart illustrating a display method according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The following describes a display panel, a display device, and a display method provided in embodiments of the present application with reference to the accompanying drawings. The thicknesses and shapes of the components in the drawings are not intended to reflect the actual scale of the display device, and are merely illustrative of the present disclosure.
A first aspect of an embodiment of the present application provides a display panel, and fig. 1 is a schematic structural diagram of the display panel provided in an embodiment of the present application. As shown in fig. 1, the display panel includes: the display module 100 and the viewing angle control box 200 are oppositely arranged, and the viewing angle control box 200 is positioned on one side of a light-emitting surface of the display module 100.
The viewing angle control box 200 includes: a liquid crystal layer 202, a first electrode 204 disposed on a first side of the liquid crystal layer 202, and a second electrode 206 disposed on a second side of the liquid crystal layer, the first side being opposite the second side. The liquid crystal layer 202 has liquid crystal molecules 2022.
In addition, the viewing angle controlling box 200 further includes:
a first substrate 208 disposed on one side of the light-emitting surface of the display module 100;
the second substrate 210 is located on a side of the first substrate 208 away from the display module 100, and the liquid crystal layer 202 is located between the first substrate 208 and the second substrate 210.
As an example, the material of the first substrate 208 and the second substrate 210 may be flexible polyethylene terephthalate (PET), or glass.
The first electrode 204 and the second electrode 206 are used for being applied with a preset signal, and when the viewing angle control box 200 is pressed, the first electrode 204 and the second electrode 206 stop being applied with the preset signal and are applied with a reset signal. In the case where the duration in which the viewing angle control box 200 stops being pressed reaches the preset duration, the first electrode 204 and the second electrode 206 stop being applied with the reset signal and continue to be applied with the preset signal.
The preset signal is used for enabling the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer to be parallel to the direction corresponding to the preset signal; the reset signal is used to make the liquid crystal molecules 2022 in the initial alignment state in the liquid crystal layer.
The preset signals applied to the first electrode 204 and the second electrode 206 when the viewing angle control box 200 is not pressed will be described below with reference to fig. 2.
Fig. 2 is a schematic diagram of a voltage difference waveform between the first electrode 204 and the second electrode 206 according to an embodiment of the present application.
As shown in fig. 2, during the period when the preset signal is applied to the first electrode 204 and the second electrode 206, the waveform of the voltage difference between the first electrode 204 and the second electrode 206 may be a square wave.
The following describes the applied signals from the first electrode 204 and the second electrode 206 and the change of the state of the liquid crystal molecules 2022 in the embodiment of the present application with reference to fig. 3.
Fig. 3 is a schematic diagram of a waveform of a voltage difference between the first electrode 204 and the second electrode 206 according to another embodiment of the present application.
First, a predetermined signal is applied to the first electrode 204 and the second electrode 206. In the case where the viewing angle controlling box 200 is pressed, the first electrode 204 and the second electrode 206 stop being applied with the preset signal. As shown in fig. 3, a time period during which the preset signal is applied to the first electrode 204 and the second electrode 206 is a time period T0, and a waveform in the time period T0 is a voltage difference waveform between the first electrode 204 and the second electrode 206 when the preset signal is applied to the first electrode 204 and the second electrode 206.
When the first electrode 204 and the second electrode 206 are applied with the predetermined signal during the time period T0 and the cell 200 is not pressed, the liquid crystal molecules 2022 in the liquid crystal layer are in the tilted alignment state as shown in fig. 4, i.e. the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer is not perpendicular to the first substrate 208. For example, the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer is 45 ° to the first substrate 208.
Since the liquid crystal molecules 2022 are in the tilted arrangement state, the liquid crystal molecules 2022 can absorb a portion of light, and then, for a viewing position corresponding to the portion of absorbed light, a display screen of the display panel cannot be viewed at the viewing position, so that the display panel is in a narrow viewing angle display mode.
In the case where the viewing angle controlling cell 200 is pressed, the liquid crystal molecules 2022 in the liquid crystal layer change from the state of being obliquely aligned as shown in fig. 4 to the state of being disordered as shown in fig. 5 due to the external pressure. In the liquid crystal layer shown in fig. 5, there are at least two liquid crystal molecules 2022 whose long axis directions are not parallel.
Then, the signals applied to the first electrode 204 and the second electrode 206 are changed from the preset signals to the reset signals, and in the case that the viewing angle control box 200 stops being pressed and the pressing stop duration reaches the preset duration, the first electrode 204 and the second electrode 206 stop being applied with the reset signals. With continued reference to fig. 3, the time period during which the reset signal is applied to the first electrode 204 and the second electrode 206 is the time period T1, and the waveform in the time period T1 is the voltage difference waveform when the reset signal is applied to the first electrode 204 and the second electrode 206.
When the reset signal is applied to the first electrode 204 and the second electrode 206, the liquid crystal molecules 2022 in the liquid crystal layer are in an initial alignment state as shown in fig. 6.
Then, in the case that the reset signal is not applied to the first electrode 204 and the second electrode 206, the preset signal is continuously applied to the first electrode 204 and the second electrode 206. With continued reference to fig. 3, the time period during which the preset signal is continuously applied to the first electrode 204 and the second electrode 206 is the time period T2 in fig. 3 and the time period thereafter, and the waveform during the time period T2 in fig. 3 and the time period thereafter is the waveform of the voltage difference when the preset signal is continuously applied to the first electrode 204 and the second electrode 206.
Under the condition that the first electrode 204 and the second electrode 206 are continuously applied with the preset signal, the liquid crystal molecules 2022 in the liquid crystal layer are restored to the tilted alignment state as shown in fig. 4.
In the embodiment of the present application, the display panel includes a display module and a viewing angle control box 200, which are oppositely disposed, and the viewing angle control box 200 includes a liquid crystal layer, a first electrode 204 disposed on a first side of the liquid crystal layer, and a second electrode 206 disposed on a second side of the liquid crystal layer. The first electrode 204 and the second electrode 206 are used to be applied with a predetermined signal, such that the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer is parallel, thereby enabling the display panel to display normally. When the viewing angle controlling cell 200 is pressed, which indicates that the liquid crystal molecules 2022 in the liquid crystal layer are disordered, the signals applied to the first electrode 204 and the second electrode 206 are switched from the preset signal to the reset signal, so that the liquid crystal molecules 2022 in the liquid crystal layer are changed from the disordered state to the initial arrangement state. Under the condition that the duration that the visual angle control box 200 stops being pressed reaches the preset duration, the first electrode 204 and the second electrode 206 stop being applied with the reset signal, and continue to be applied with the preset signal, so that the liquid crystal molecules 2022 in the liquid crystal layer are changed from the initial arrangement state to the normal state before disorder, the long axis directions of the liquid crystal molecules 2022 in the liquid crystal layer are ensured to be consistent, and the problem that when the surface of the visual angle control box 200 is pressed by an external force, the display effect of the display panel is not good due to the disorder arrangement of the liquid crystal molecules 2022 is solved. For example, the display panel may be prevented from being scratched (trace mura).
In one or more embodiments of the present application, the display panel may further include:
and a pressure detection module for detecting whether the viewing angle control box 200 is pressed.
As an example, the pressure detection module may be disposed on the display module or the viewing angle control box 200.
As one example, the pressure detection module may be a pressure sensor. In other embodiments of the present invention, the pressure detection module may detect an electrical signal of the first electrode 204 and/or the second electrode 206 to determine whether the viewing angle control box 200 is pressed. For example, by applying a high frequency touch signal to the first electrode 204 and/or the second electrode 206, and detecting a capacitance change of the first electrode 204 and/or the second electrode 206, it can be detected whether the viewing angle control box 200 is pressed.
Whether the viewing angle control box 200 is pressed or not is detected through the pressure detection module, and when the viewing angle control box 200 is pressed, the liquid crystal molecules 2022 in the liquid crystal layer can be considered to be in a disordered state, then the application of the preset signal to the first electrode 204 and the second electrode 206 can be stopped, and the reset signal can be applied to the first electrode 204 and the second electrode 206, so that the liquid crystal molecules 2022 in the liquid crystal layer can be timely restored to the ordered state before disorder.
In one or more embodiments of the present application, during the period when the viewing angle control box 200 is pressed, the first electrode 204 and the second electrode 206 start to be applied with the reset signal.
As an example, when the viewing angle controlling box 200 starts to be pressed, the first electrode 204 and the second electrode 206 start to be applied with the reset signal.
The time point when the reset signal starts to be applied to the first electrode 204 and the second electrode 206 will be described by an example shown in fig. 7.
Fig. 7 is a schematic diagram of the pressure applied to the viewing angle controlling box 200 and the voltage difference between the first electrode 204 and the second electrode 206 according to an embodiment of the present application.
As shown in FIG. 7, t0、t1And t2Respectively, at three time points, at t0To t1The pressure applied to the view angle control box 200 in the time period of (a) is not 0, which indicates that the pressure is not 0 at t0To t1The view angle control box 200 is pressed during the time period. At t0At this point, the viewing angle controlling box 200 starts to be pressed, the first electrode 204 and the second electrode 206 stop being applied with the preset signal, and start being applied with the reset signal.
At t1At this point in time, the viewing angle control box 200 stops being pressed, and at this time, the time period during which the viewing angle control box 200 stops being pressed starts to be counted. Due to the fact that at t2The time period for which the time point viewing angle control box 200 stops being pressed is equal to the preset time period, then at t2At the time point, the reset signal is not applied to the first electrode 204 and the second electrode 206, and the preset signal continues to be applied. I.e. at t0To t2The reset signal is applied to the first electrode 204 and the second electrode 206 during the time period.
In the embodiment of the present application, during the period when the viewing angle controlling box 200 is pressed, the first electrode 204 and the second electrode 206 start to be applied with the reset signal, so that the liquid crystal molecules 2022 in the liquid crystal layer are in the initial alignment state. After the liquid crystal molecules 2022 are in the initial alignment state, if the first electrode 204 and the second electrode 206 stop being applied with the reset signal and continue to be applied with the preset signal, the liquid crystal molecules 2022 in the liquid crystal layer can be restored from the initial alignment state to the ordered state before disorder by the preset information.
In one or more embodiments of the present application, when the viewing angle control box 200 stops being pressed, the first electrode 204 and the second electrode 206 start to be applied with the reset signal.
The point in time when the reset signal starts to be applied to the first electrode 204 and the second electrode 206 is explained by another example shown in fig. 8.
Fig. 8 is a schematic diagram of the magnitude of the pressure applied to the viewing angle controlling box 200 and the voltage difference between the first electrode 204 and the second electrode 206 according to another embodiment of the present application.
As shown in fig. 8, t0、t1And t2Respectively, at three time points, at t0To t1The pressure applied to the view angle control box 200 is not zero during the time period (t), which indicates that the pressure is not zero during the time period (t)0To t1The view angle control box 200 is pressed during the time period. At the time point t when the view angle control box 200 finishes being pressed1The first electrode 204 and the second electrode 206 start to stop being applied with the preset signal and start being applied with the reset signal.
At t1The time point starts to time the period of time for which the viewing angle control box 200 stops being pressed. Due to the fact that at t2The point-in-time view angle control box 200 stops being pressedIs equal to a preset duration, thus, at t2At the time point, the reset signal is not applied to the first electrode 204 and the second electrode 206, and the preset signal continues to be applied. I.e. at t1To t2The reset signal is applied to the first electrode 204 and the second electrode 206 during the time period.
In the embodiment of the present application, when the viewing angle controlling box 200 stops being pressed, the first electrode 204 and the second electrode 206 start to be applied with the reset signal, so that the liquid crystal molecules 2022 in the liquid crystal layer are in the initial alignment state. After the liquid crystal molecules 2022 are in the initial alignment state, if the first electrode 204 and the second electrode 206 stop being applied with the reset signal and continue to be applied with the preset signal, the liquid crystal molecules 2022 in the liquid crystal layer can be restored from the initial alignment state to the ordered state before disorder by the preset information.
In one or more embodiments of the present application, in the case where the liquid crystal molecules 2022 in the liquid crystal layer are negative liquid crystal molecules 2022, the initial alignment state includes that the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer is perpendicular to the first substrate 208; in the case where the liquid crystal molecules 2022 in the liquid crystal layer are positive liquid crystal molecules 2022, the initial alignment state includes the long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer being parallel to the first substrate 208.
The following describes the change state of the liquid crystal molecules 2022 in the liquid crystal layer, taking the liquid crystal molecules 2022 in the liquid crystal layer as negative liquid crystal molecules 2022 and positive liquid crystal molecules 2022 as examples.
As an example, in the case where the liquid crystal molecules 2022 are negative liquid crystal molecules 2022, the initial alignment state of the negative liquid crystal molecules 2022 may be a vertical alignment state as shown in fig. 6, which means that the long axis direction of the liquid crystal molecules 2022 is perpendicular to the first substrate 208. Then, by applying a preset signal to the first electrode 204 and the second electrode 206, the voltage difference between the first electrode 204 and the second electrode 206 is changed, so that the negative liquid crystal molecules 2022 are changed from the vertically aligned state to the obliquely aligned state shown in fig. 4. Thereby, the display panel is switched from the wide viewing angle display mode to the narrow viewing angle display mode.
As another example, in the case where the liquid crystal molecules 2022 are positive liquid crystal molecules 2022, the initial alignment state of the positive liquid crystal molecules 2022 may be a lying alignment state as shown in fig. 9, which means that the long axis direction of the liquid crystal molecules 2022 is parallel to the first substrate 208. Then, by applying a preset signal to the first electrode 204 and the second electrode 206, the voltage difference between the first electrode 204 and the second electrode 206 is changed, so that the positive liquid crystal molecules 2022 are changed from the lying alignment state to the tilted alignment state. Thereby, the display panel is switched from the wide viewing angle display mode to the narrow viewing angle display mode.
In the embodiment of the present application, when the liquid crystal molecules 2022 are negative liquid crystal molecules 2022 or positive liquid crystal molecules 2022, the initial alignment states of the liquid crystal molecules 2022 are different. Based on this, when the liquid crystal molecules 2022 in the liquid crystal layer are in the disordered state, the signals applied to the first electrode 204 and the second electrode 206 are changed from the preset signals to the recovery signals, so that the liquid crystal molecules 2022 in the disordered state are recovered and restored to the initial alignment state. Then, the preset signal is continuously applied to the first electrode 204 and the second electrode 206, so that the liquid crystal molecules 2022 change from the initial alignment state to the ordered state before disorder (e.g., the tilted alignment state).
In one or more embodiments of the present application, the preset signal includes a signal for making an angle between a long axis direction of the liquid crystal molecules 2022 in the liquid crystal layer and the first substrate 208 less than 90 °.
In the case where the liquid crystal molecules 2022 in the liquid crystal layer are in an obliquely aligned state, that is, the angle between the long axis direction of the liquid crystal molecules 2022 and the first substrate 208 is less than 90 °, if the viewing angle controlling cell 200 is pressed, the liquid crystal molecules 2022 in the liquid crystal layer are easily subjected to alignment disorder.
Based on this analysis, in the case where the application of the preset signal to the first electrode 204 and the second electrode 206 is a signal for making the angle between the long axis direction of the liquid crystal molecules 2022 and the first substrate 208 smaller than 90 °, if the viewing angle control box 200 is pressed and it is highly likely that the liquid crystal molecules 2022 are out of alignment, the application of the preset signal to the first electrode 204 and the second electrode 206 may be stopped, the application of the reset signal may be changed to the application of the reset signal, and the application of the preset signal may be continued after the application of the reset signal. Thereby, the problem that the liquid crystal molecules 2022 are disorganized due to the pressing of the viewing angle controlling cell 200 can be solved.
In one or more embodiments of the present application, the voltage difference between the first electrode 204 and the second electrode 206 is zero during the period when the reset signal is applied to the first electrode 204 and the second electrode 206.
As an example, with continued reference to FIG. 7, at t0To t2Is applied to the first electrode 204 and the second electrode 206, then at t0To t2The voltage difference between the first electrode 204 and the second electrode 206 is zero during the time period.
As another example, with continued reference to FIG. 8, at t1To t2Is applied to the first electrode 204 and the second electrode 206, then at t0To t2The voltage difference between the first electrode 204 and the second electrode 206 is zero during the time period.
Under the condition that the preset signal is not applied to the first electrode 204 and the second electrode 206, the voltage difference between the first electrode 204 and the second electrode 206 is zero, and the liquid crystal molecules 2022 are in the initial arrangement state. When a predetermined signal is applied to the first electrode 204 and the second electrode 206, a voltage difference exists between the first electrode 204 and the second electrode 206. If the liquid crystal molecules 2022 are disturbed, the disturbed liquid crystal molecules 2022 are difficult to rotate at a fast angle and return to the state before disturbance due to the voltage difference between the first electrode 204 and the second electrode 206.
Based on the above analysis, in the case where the liquid crystal molecules 2022 are disordered, the liquid crystal molecules 2022 in the liquid crystal layer can be changed from the disordered state to the initial alignment state by applying the reset signal to the first electrode 204 and the second electrode 206 so that the voltage difference between the first electrode 204 and the second electrode 206 is zero, and then the preset signal is applied to the first electrode 204 and the second electrode 206 so that the liquid crystal molecules 2022 can be changed from the initial alignment state to the state before the disorder.
In one or more embodiments of the present application, the liquid crystal layer may further include dye molecules, and the long axis direction of the dye molecules in the liquid crystal layer coincides with the long axis direction of the liquid crystal molecules 2022 when the viewing angle controlling cell 200 is not pressed.
The liquid crystal layer in the embodiment of the present application is explained below by fig. 10.
As shown in fig. 10, the liquid crystal layer includes liquid crystal molecules 2022 and dye molecules, and the long axis direction of the liquid crystal molecules 2022 and the long axis direction of the dye molecules are parallel to each other when the viewing angle controlling cell 200 is not pressed.
In the case where the viewing angle controlling cell 200 is pressed, the long axis direction of the liquid crystal molecules 2022 and the long axis direction of the dye molecules do not coincide, that is, the liquid crystal molecules 2022 and the dye molecules in the liquid crystal layer are disturbed.
The dye molecules are dispersed in the Liquid Crystal layer, so that the viewing angle control cell 200 is a Guest-Host Liquid Crystal (GHLC) cell in which the Liquid Crystal molecules 2022 are the main and the dye molecules are Guest.
In one or more embodiments of the present application, the number of the viewing angle controlling boxes 200 in one display panel may be one or more. As an example, the number of the viewing angle control boxes 200 in one display panel is two.
A second aspect of embodiments of the present application provides a display device including the display panel of any one of the above.
As an example, the display device provided in the embodiment of the present invention may be used in an in-vehicle display system. In the driving process of a driver, a display picture of the display device is not suitable for being watched by the driver, the attention of the driver is easily dispersed, and potential safety hazards exist. Under the condition, the angle of the liquid crystal molecules in the visual angle control box can be controlled to switch the display device to a narrow visual angle display mode, so that a driver cannot view a display picture of the display device, and driving safety is guaranteed.
A third aspect of the embodiments of the present application provides a display method, which is applied to the display device described above.
Fig. 11 is a flowchart illustrating a display method according to an embodiment of the present application. As shown in fig. 11, the display method 300 includes:
s302, detecting whether the visual angle control box is pressed or not during the period of applying a preset signal to the first electrode and the second electrode, wherein the preset signal is used for enabling the long axis of liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal;
s304, under the condition that the visual angle control box is detected to be pressed, stopping applying preset signals to the first electrode and the second electrode, and applying a reset signal, wherein the reset signal is used for enabling liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state;
s306, under the condition that the duration of the visual angle control box stopping being pressed reaches the preset duration, the reset signals are stopped to be applied to the first electrode and the second electrode, and the preset signals are continuously applied.
In this application embodiment, display panel includes relative display module assembly and the visual angle control box that sets up, and the visual angle control box includes the liquid crystal layer, sets up the first electrode at the first side of liquid crystal layer and sets up the second electrode at the second side of liquid crystal layer. The first electrode and the second electrode are used for being applied with preset signals, so that the long axis directions of liquid crystal molecules in the liquid crystal layer are parallel, and the display panel can display normally. When the visual angle control box is pressed, the liquid crystal molecules in the liquid crystal layer are indicated to be disordered, and the signals applied to the first electrode and the second electrode are switched from the preset signals to the reset signals, so that the liquid crystal molecules in the liquid crystal layer are changed from the disordered state to the initial arrangement state. Under the condition that the time length for which the visual angle control box stops being pressed reaches the preset time length, the first electrode and the second electrode stop being applied with the reset signal, and continue to be applied with the preset signal, so that the liquid crystal molecules in the liquid crystal layer are changed from the initial arrangement state to the normal state before disorder, the long axis directions of the liquid crystal molecules in the liquid crystal layer are consistent, and the display effect of the display panel is prevented from being influenced.
In one or more embodiments of the present application, S304 may include:
and stopping applying the preset signal to the first electrode and the second electrode and applying the reset signal while the visual angle control box is pressed.
In the embodiment of the application, during the period that the visual angle control box is pressed, the first electrode and the second electrode start to be applied with the reset signal, so that the liquid crystal molecules in the liquid crystal layer are in an initial arrangement state. After the liquid crystal molecules are in the initial alignment state, if the first and second electrodes stop being applied with the reset signal and continue to be applied with the preset signal, the liquid crystal molecules in the liquid crystal layer can be restored from the initial alignment state to the ordered state before the disorder by the preset information.
In one or more embodiments of the present application, S304 may include:
and when the visual angle control box is pressed, stopping applying the preset signal to the first electrode and the second electrode, and applying a reset signal.
In the embodiment of the application, when the viewing angle control box stops being pressed, the first electrode and the second electrode start to be applied with the reset signal, so that the liquid crystal molecules in the liquid crystal layer are in an initial arrangement state. After the liquid crystal molecules are in the initial alignment state, if the first and second electrodes stop being applied with the reset signal and continue to be applied with the preset signal, the liquid crystal molecules in the liquid crystal layer can be restored from the initial alignment state to the ordered state before the disorder by the preset information.
It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present application.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (12)
1. A display panel, comprising: the display module comprises a display module and a visual angle control box which are arranged oppositely, wherein the visual angle control box is positioned on one side of a light-emitting surface of the display module;
the viewing angle control box includes: a liquid crystal layer, a first electrode disposed on a first side of the liquid crystal layer, and a second electrode disposed on a second side of the liquid crystal layer, the first side being opposite to the second side;
the first electrode and the second electrode are used for being applied with a preset signal, stopping being applied with the preset signal and being applied with a reset signal under the condition that the visual angle control box is pressed, and stopping being applied with the reset signal and continuing being applied with the preset signal under the condition that the duration of the visual angle control box stopping being pressed reaches a preset duration;
the preset signal is used for enabling the long axis direction of liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal, and the reset signal is used for enabling the liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state.
2. The display panel according to claim 1, characterized in that the display panel further comprises:
and the pressure detection module is used for detecting whether the visual angle control box is pressed or not.
3. The display panel according to claim 1, wherein the first electrode and the second electrode start to be applied with the reset signal during a period in which the viewing angle control box is pressed.
4. The display panel according to claim 1, wherein the first electrode and the second electrode start to be applied with the reset signal when the viewing angle control box stops being pressed.
5. The display panel according to claim 1, wherein the viewing angle control box further comprises:
the first substrate is positioned on one side of the light-emitting surface of the display module;
the second substrate is positioned on one side of the first substrate, which is far away from the display module, and the liquid crystal layer is positioned between the first substrate and the second substrate;
wherein, in the case that the liquid crystal molecules in the liquid crystal layer are negative liquid crystal molecules, the initial arrangement state includes that the long axis direction of the liquid crystal molecules in the liquid crystal layer is vertical to the first substrate;
in a case where the liquid crystal molecules in the liquid crystal layer are positive liquid crystal molecules, the initial alignment state includes a long axis direction of the liquid crystal molecules in the liquid crystal layer being parallel to the first substrate.
6. The display panel according to claim 5, wherein the preset signal comprises a signal for making an angle between a long axis direction of liquid crystal molecules in the liquid crystal layer and the first substrate smaller than 90 °.
7. The display panel according to claim 1, wherein a voltage difference between the first electrode and the second electrode is zero during a period in which the reset signal is applied to the first electrode and the second electrode.
8. The display panel according to claim 1, wherein the liquid crystal layer further includes dye molecules therein,
under the condition that the visual angle control box is not pressed, the long axis direction of the dye molecules in the liquid crystal layer is consistent with the long axis direction of the liquid crystal molecules.
9. A display device characterized by comprising the display panel according to any one of claims 1 to 8.
10. A display method applied to the display device according to claim 9, the method comprising:
detecting whether the visual angle control box is pressed or not during the period of applying a preset signal to the first electrode and the second electrode, wherein the preset signal is used for enabling the long axis of liquid crystal molecules in the liquid crystal layer to be parallel to the direction corresponding to the preset signal;
under the condition that the visual angle control box is detected to be pressed, stopping applying the preset signal to the first electrode and the second electrode, and applying a reset signal, wherein the reset signal is used for enabling liquid crystal molecules in the liquid crystal layer to be in an initial arrangement state;
and under the condition that the pressing time of the visual angle control box reaches a preset time, stopping applying the reset signal to the first electrode and the second electrode, and continuously applying the preset signal.
11. The method according to claim 10, wherein the stopping of the application of the preset signal to the first electrode and the second electrode and the application of the reset signal comprises:
and stopping applying the preset signal to the first electrode and the second electrode and applying the reset signal while the visual angle control box is pressed.
12. The method according to claim 10, wherein the stopping of the application of the preset signal to the first electrode and the second electrode and the application of the reset signal comprises:
and when the visual angle control box is pressed, stopping applying the preset signal to the first electrode and the second electrode, and applying the reset signal.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050280761A1 (en) * | 2004-06-21 | 2005-12-22 | Nec Lcd Technologies, Ltd. | Liquid crystal display device |
| CN1954254A (en) * | 2004-05-18 | 2007-04-25 | 夏普株式会社 | Liquid crystal display and electronic device having same |
| CN101826306A (en) * | 2009-03-06 | 2010-09-08 | 上海天马微电子有限公司 | Liquid crystal display device driving method and liquid crystal display device |
| CN104575423A (en) * | 2014-12-31 | 2015-04-29 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal panel |
| CN108172182A (en) * | 2017-12-25 | 2018-06-15 | 昆山龙腾光电有限公司 | Black picture is inserted into circuit, display device and electronic equipment |
| CN110133882A (en) * | 2019-06-29 | 2019-08-16 | 上海天马微电子有限公司 | Display panel, display device and display method thereof |
| CN110780477A (en) * | 2019-11-28 | 2020-02-11 | 上海天马微电子有限公司 | Liquid crystal display screen, display method thereof and display device |
| CN110824740A (en) * | 2019-11-11 | 2020-02-21 | 昆山龙腾光电股份有限公司 | Display panel, viewing angle control method of display panel and display device |
| CN111308800A (en) * | 2019-12-10 | 2020-06-19 | 京东方科技集团股份有限公司 | Pixel electrode, liquid crystal display device and using method thereof |
| CN211554556U (en) * | 2019-12-30 | 2020-09-22 | 昆山龙腾光电股份有限公司 | Display device |
-
2020
- 2020-09-29 CN CN202011048607.9A patent/CN112130360A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1954254A (en) * | 2004-05-18 | 2007-04-25 | 夏普株式会社 | Liquid crystal display and electronic device having same |
| US20050280761A1 (en) * | 2004-06-21 | 2005-12-22 | Nec Lcd Technologies, Ltd. | Liquid crystal display device |
| CN101826306A (en) * | 2009-03-06 | 2010-09-08 | 上海天马微电子有限公司 | Liquid crystal display device driving method and liquid crystal display device |
| CN104575423A (en) * | 2014-12-31 | 2015-04-29 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal panel |
| CN108172182A (en) * | 2017-12-25 | 2018-06-15 | 昆山龙腾光电有限公司 | Black picture is inserted into circuit, display device and electronic equipment |
| CN110133882A (en) * | 2019-06-29 | 2019-08-16 | 上海天马微电子有限公司 | Display panel, display device and display method thereof |
| CN110824740A (en) * | 2019-11-11 | 2020-02-21 | 昆山龙腾光电股份有限公司 | Display panel, viewing angle control method of display panel and display device |
| CN110780477A (en) * | 2019-11-28 | 2020-02-11 | 上海天马微电子有限公司 | Liquid crystal display screen, display method thereof and display device |
| CN111308800A (en) * | 2019-12-10 | 2020-06-19 | 京东方科技集团股份有限公司 | Pixel electrode, liquid crystal display device and using method thereof |
| CN211554556U (en) * | 2019-12-30 | 2020-09-22 | 昆山龙腾光电股份有限公司 | Display device |
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Application publication date: 20201225 |