CN116300225A - Liquid crystal panel and liquid crystal display device - Google Patents
Liquid crystal panel and liquid crystal display device Download PDFInfo
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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
- G02F1/13—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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/13—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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
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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
- G02F1/13—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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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Abstract
The application provides a liquid crystal panel and a liquid crystal display device. The liquid crystal panel includes: a first substrate and a second substrate facing each other; a first common electrode located at one side of the first substrate facing the second substrate; a second common electrode located at a side of the second substrate facing the first substrate; and the switching circuit is used for being connected with the first public electrode or the second public electrode so as to control the liquid crystal panel to be switched in different working modes. The embodiment of the application can realize the switching of the liquid crystal panel under two modes, has all the advantages of the liquid crystal panel under two modes, can switch the liquid crystal panel under different modes under different application scenes, and realizes the maximization of the display effect under specific use scenes.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a liquid crystal display panel and a liquid crystal display device.
Background
With the progress of display technology, electronic devices are moving toward small size, thin thickness, light weight, etc., so that the current mainstream display devices in the market have been developed from the past cathode ray tube into liquid crystal display devices. In particular, the liquid crystal display device is applicable to a wide variety of fields, including mobile phones, notebook computers, video cameras, music players, mobile navigation devices, televisions, and other display devices used in daily life, and liquid crystal panels are often used as display panels.
Currently mainstream or developing panels may include: twisted Nematic (TN), in-plane alignment (IPS), etc. The TN display screen has the advantages of fast liquid crystal molecule reaction time, high refresh rate support, difficult afterimage and the like, but has the defects of small visual angle, display whitening and low color reduction degree. While the IPS screen has the advantages of large visual angle and good color reproducibility; however, the liquid crystal molecules have the disadvantages of low corresponding speed, easy image sticking and difficult realization of high refresh rate.
Disclosure of Invention
The present application has been made in view of at least one of the above-mentioned technical problems occurring in the prior art. According to an aspect of the present application, there is provided a liquid crystal panel including:
a first substrate and a second substrate facing each other;
a first common electrode located at one side of the first substrate facing the second substrate;
a second common electrode located at a side of the second substrate facing the first substrate;
and the switching circuit is used for being connected with the first public electrode or the second public electrode so as to control the liquid crystal panel to be switched in different working modes.
In some embodiments, the liquid crystal panel further comprises:
a first alignment layer positioned at one side of the first substrate facing the second substrate and between the first common electrode and the second common electrode;
a second alignment layer positioned at one side of the second substrate facing the first substrate and between the first common electrode and the second common electrode;
a liquid crystal layer located between the first alignment layer and the second alignment layer;
the first alignment layer and the second alignment layer are used to provide liquid crystal molecules in the liquid crystal layer with a plurality of different deflection directions.
In some embodiments, the liquid crystal panel further comprises:
an insulating layer between the second common electrode and the second alignment layer;
the drain electrode and the source electrode are positioned in the insulating layer;
a pixel electrode layer located at one side of the insulating layer facing the second alignment layer and connected with the drain electrode;
an oxide channel layer in the insulating layer, connected to the drain electrode and the source electrode;
and the grid electrode is positioned on one side of the second substrate facing to the insulating layer and is used for receiving a grid signal.
In some embodiments, the switching circuit comprises an operational amplifier;
when the output end of the operational amplifier is connected with a first electrode positioned on the first public electrode, the liquid crystal panel works in a first mode;
when the output end of the operational amplifier is connected with the second electrode positioned on the second common electrode, the liquid crystal panel works in a second mode.
In some embodiments, the first electrode on the first common electrode is grounded when an output of the operational amplifier is connected to the second electrode on the second common electrode.
In some embodiments, the switching circuit includes a switch for connecting the operational amplifier with the first electrode or the second electrode.
In some embodiments, the change-over switch comprises a first switch and a second switch; wherein,,
a first end of the first switch is connected with the output end of the operational amplifier, a second end of the first switch is connected with the second end of the second switch, and a third end of the first switch is connected with the second common electrode;
the first end of the second switch is connected with the first common electrode, the second end of the second switch is connected with the second end of the first switch, and the third end of the second switch is grounded;
the first switch and the second switch are both single pole double throw switches.
In some embodiments, when the liquid crystal panel is operated in the first mode and the gate signal received by the gate is a high level signal, a first electric field is established between the first common electrode and the pixel electrode, and the liquid crystal in the liquid crystal layer rotates in a first direction;
when the liquid crystal panel works in the second mode and the grid signal received by the grid is the high-level signal, a second electric field is established between the second common electrode and the pixel electrode, and the liquid crystal in the liquid crystal layer rotates along a second direction.
In some embodiments, the first mode comprises a twisted nematic mode; the second mode includes a planar transition mode.
Another aspect of embodiments of the present application provides a liquid crystal display device including the liquid crystal panel as described above.
The liquid crystal panel is provided with a first substrate, a second substrate, a first public electrode, a second public electrode and a switching circuit which are opposite to each other, and the switching circuit is connected with the first public electrode or the second public electrode to control the liquid crystal panel to switch in different working modes. The embodiment of the application can realize the switching of the liquid crystal panel under two modes, has all the advantages of the liquid crystal panel under two modes, can switch the liquid crystal panel under different modes under different application scenes, and realizes the maximization of the display effect under specific use scenes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic view showing a Twisted Nematic (TN) display screen in the conventional art;
fig. 2 shows a schematic view of an In-Plane Switching (IPS) display screen In the conventional art;
fig. 3 shows a schematic view of a liquid crystal panel according to an embodiment of the present application;
fig. 4 shows a schematic circuit diagram of a liquid crystal panel according to an embodiment of the present application operating in a first mode;
fig. 5 shows a schematic circuit diagram of a liquid crystal panel according to an embodiment of the present application operating in a second mode;
fig. 6 shows a schematic diagram of a liquid crystal display device according to an embodiment of the present application.
Reference numerals illustrate:
a 100-TN type display screen; 101-a first substrate; 102-a second substrate; 103-a common electrode layer; 104-a first alignment layer; 105-a liquid crystal layer; 106-a second alignment layer; 107-a pixel electrode layer; 108-source and drain electrodes; 109-gate; a 110-oxide channel layer; a 111-insulating layer; 200-IPS type display screen; 201-a first substrate; 202-a second substrate; 203-shielding electrode layers; 204-a first alignment layer; 205-a liquid crystal layer; 206-a second alignment layer; 207-a common electrode layer; 208-source and drain; 209-gate; 210-an oxide channel layer; 211-a pixel electrode layer; 212-an insulating layer; 300-a liquid crystal panel; 301-a first substrate; 302-a second substrate; 303-a first common electrode; 304-a second common electrode; 305-a first alignment layer; 306-a second alignment layer; 307-a liquid crystal layer; 308-an insulating layer; 309-drain and source; 310-pixel electrode layer; 311-oxide channel layer; 312-gate; an OP-operational amplifier; k1-a first switch; k2-a second switch; 600-liquid crystal display device.
Detailed Description
In order to better understand the technical solutions of the embodiments of the present application, the following descriptions will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Fig. 1 is a schematic diagram of a Twisted Nematic (TN) display screen in the conventional technology. The TN type display screen 100 includes: a first substrate (CF glass) 101 and a second substrate (TFT glass) 102 which are opposite to each other, a common electrode Layer (Vcom ITO) 103, a first alignment Layer 104, a liquid Crystal Layer (Crystal) 105, a second alignment Layer 106, a pixel electrode Layer (Pixcel ITO) 107, source and drain electrodes (S/D layers) 108, a Gate Layer 109, an oxide channel Layer (Active Layer) 110, an insulating Layer (PVX) 111, and the like.
The common electrode layer Vcom ITO 103 of the TN-mode display screen 100 is located at a side of the first substrate 101 facing the second substrate 102, and the pixel electrode layer Pixcel ITO 107 is located at a side of the second substrate 102 facing the first substrate 101.
A first alignment layer 104 located at a side of the first substrate 101 facing the second substrate 102, a second alignment layer 106 located at a side of the second substrate 102 facing the first substrate 101, and a liquid crystal layer located between the first alignment layer 104 and the second alignment layer 106; the first alignment layer 104 and the second alignment layer 106 are configured to cause liquid crystal molecules in the liquid crystal layer 105 to have a plurality of different deflection directions. The insulating layer 111 is located between the second substrate 102 and the second alignment layer 106.
The drain and source electrodes 108 of the TN-mode display 100 are located in the insulating layer 111. An oxide channel layer 110 is located in the insulating layer 111 and connected to the drain electrode and the source electrode 108; and a gate electrode 109 located on a side of the second substrate 102 facing the insulating layer 111, for receiving a gate signal. The pixel electrode layer 107 is located on a side of the insulating layer 111 facing the second alignment layer 106 and is connected to the drain electrode.
The driving principle of the TN display 100 is as follows: the light polarization directions of the lower polarizer and the upper polarizer of the TN display 100 are perpendicular to each other, and meanwhile, the directions of the first alignment layer 104 and the second alignment layer 106 are also designed vertically, so that liquid crystal is injected between the second substrate 102 and the first substrate 101.
When the control switch S between the common electrode layer Vcom ITO 103 and the pixel electrode layer Pixcel ITO 107 is turned on, a vertical electric field is formed between the common electrode layer Vcom ITO 103 and the pixel electrode layer Pixcel ITO 107, and the liquid crystal rotates in the vertical direction in the electric field. After the isotropic light passes through the lower polarizer, only light with the same polarization direction component as that of the lower polarizer is passed through, and the polarized light propagates along the direction of the long axis of the liquid crystal.
When the control switch S (not shown) is turned off, the electric field between the common electrode layer Vcom ITO 103 and the pixel electrode layer Pixcel ITO 107 disappears, and at this time, the liquid crystal molecules are affected by the directions of the first alignment layer and the second alignment layer, and the directions of the first alignment layer and the second alignment layer are initially set to be perpendicular to each other, so that the liquid crystal molecules will rotate horizontally by about 90 degrees under the influence of intermolecular forces. After passing through the lower polarizer, the isotropic light rotates by about 90 degrees along the long axis direction of the liquid crystal molecules, and finally passes through the upper polarizer to display a bright state.
By controlling the on/off state of the switch S, the rotation direction of the liquid crystal molecules is controlled, and thus the dark state is controlled.
TN display screen in the traditional technology has the advantages of fast liquid crystal molecule reaction time, high refresh rate support, difficult afterimage and the like; meanwhile, the display has the defects of small visual angle, white display and low color rendition.
Fig. 2 is a schematic view of an In-Plane Switching (IPS) type display screen according to the conventional art. The IPS type display panel 200 includes at least: a first substrate (CF Glass) 201 and a second substrate (TFT Glass) 202 facing each other, a Shielding electrode Layer (Shielding ITO) 203, a first alignment Layer 204, a liquid Crystal Layer (Crystal) 205, a second alignment Layer 206, a common electrode Layer (Vcom ITO) 207, source and drain electrodes (S/D layers) 208, a Gate Layer 209, an oxide channel Layer (Active Layer) 210, a pixel electrode Layer (Pixcel ITO) 211, and an insulating Layer (PVX) 212.
Wherein, a Shielding electrode layer (Shielding ITO) 203 of the IPS type display screen 200 is located at a side of the first substrate 201 facing away from the second substrate 202. The first alignment layer 204 is located on one side of the first substrate 201 facing the second substrate 202; a second alignment layer 206 located on a side of the second substrate 202 facing the first substrate 201; a liquid crystal layer 205, which is located between the first alignment layer 204 and the second alignment layer 206. The insulating layer 212 is located between the second substrate 202 and the second alignment layer 206.
The common electrode layer Vcom ITO 207 is located on a side of the insulating layer 212 facing the second alignment layer 206, and the drain and source electrodes 208 of the IPS type display screen 200 are located in the insulating layer 212. An oxide channel layer 210 is located in the insulating layer 212 and is connected to the drain and source 208; and a gate 209 located on a side of the second substrate 202 facing the insulating layer 212, for receiving a gate signal. The pixel electrode Pixcel ITO 211 is in contact with the Active Layer 210, which is located in the insulating Layer 212.
The common electrode layer Vcom ITO 207 and the pixel electrode Pixcel ITO 211 are both located on the upper layer of the second substrate TFT glass 202, and by adopting a certain hollowed design to Vcom ITO 207, an electric field is generated between the electrodes of Pixcel ITO 211 and Vcom ITO 207, so as to control inversion of liquid crystal molecules.
The driving principle of the IPS display screen 200 is as follows: the lower polarizer and the upper polarizer of the IPS display panel 200 have light polarization directions perpendicular to each other, and simultaneously the first alignment layer and the second alignment layer are also designed to be perpendicular to each other, and liquid crystal is injected between TFT glass and CF glass.
When the control switch S (not shown) between the common electrode Vcom ITO 207 and the pixel electrode Pixcel ITO 211 is closed, a horizontal electric field is formed between the common electrode Vcom ITO 207 and the pixel electrode Pixcel ITO 211, the liquid crystal molecules rotate in the horizontal direction in the electric field, after the isotropic light passes through the lower polarizer, the light with the same component as the polarization direction of the lower polarizer is passed through, and the light propagates along the long axis direction of the liquid crystal molecules, and finally passes through the upper polarizer to display a bright state.
When the control switch S of the common electrode Vcom ITO 207 and the pixel electrode Pixcel ITO 211 is turned off, the electric field between the common electrode Vcom ITO 207 and the pixel electrode Pixcel ITO 211 disappears, at this time, the arrangement of the liquid crystal molecules is only affected by the initial directions of the first alignment layer and the second alignment layer and the intermolecular force, the long axes of the liquid crystal molecules are arranged along the direction of the alignment layer, after the isotropic light passes through the lower polarizer, the linearly polarized light is perpendicular to the polarization direction of the upper polarizer along the long axis direction of the liquid crystal, and at this time, the light is isolated by the upper polarizer, and a dark state is displayed.
The on-off control of the switch S realizes the control of the rotation direction of the liquid crystal molecules, thereby realizing the respective control of dark and bright states.
The IPS display screen in the traditional technology has the advantages of large visual angle and good color reproducibility; however, the liquid crystal molecules have the disadvantages of low corresponding speed, easy image sticking and difficult realization of high refresh rate.
Based on at least one technical problem as described above, the present application provides a liquid crystal panel, the liquid crystal panel comprising: a first substrate and a second substrate facing each other; a first common electrode located at one side of the first substrate facing the second substrate; a second common electrode located at a side of the second substrate facing the first substrate; and the switching circuit is used for being connected with the first public electrode or the second public electrode so as to control the liquid crystal panel to be switched in different working modes. The embodiment of the application can realize the switching of the liquid crystal panel under two modes, has all the advantages of the liquid crystal panel under two modes, can switch the liquid crystal panel under different modes under different application scenes, and realizes the maximization of the display effect under specific use scenes.
Fig. 3 shows a schematic structural view of a liquid crystal panel according to an embodiment of the present application; as shown in fig. 3, the liquid crystal panel 300 according to an embodiment of the present application may include first and second substrates 301 and 302, a first common electrode 303, a second common electrode 304, and a switching circuit that are opposite to each other.
Wherein, the first common electrode 303 is located at one side of the first substrate 301 facing the second substrate 302; a second common electrode 304 located at a side of the second substrate 302 facing the first substrate 301; and a switching circuit connected to the first common electrode 303 or the second common electrode 304 to control the liquid crystal panel 300 to switch in different operation modes.
The embodiment of the application can realize the switching of the liquid crystal panel under two modes, has all the advantages of the liquid crystal panel under two modes, can switch the liquid crystal panel under different modes under different application scenes, and realizes the maximization of the display effect under specific use scenes.
With continued reference to fig. 3, in one embodiment of the present application, the liquid crystal panel 300 further includes:
a first alignment layer 305 located on a side of the first substrate 301 facing the second substrate 302 and between the first common electrode 303 and the second common electrode 304;
a second alignment layer 306 located on a side of the second substrate 302 facing the first substrate 301 and between the first common electrode 303 and the second common electrode 304;
a liquid crystal layer 307 between the first alignment layer 305 and the second alignment layer 306;
the first alignment layer 305 and the second alignment layer 306 can control an initial alignment direction of liquid crystal molecules, and can also be used to provide liquid crystal molecules in the liquid crystal layer 307 with various different deflection directions.
With continued reference to fig. 3, in one embodiment of the present application, the liquid crystal panel 300 further includes:
an insulating layer 308 is located between the second common electrode 304 and the second alignment layer 306.
Drain and source electrodes 309 in the insulating layer 308;
a pixel electrode layer 310 located at a side of the insulating layer 308 facing the second alignment layer 306 and connected to the drain electrode;
an oxide channel layer 311 located in the insulating layer 308 and connected to the drain electrode and the source electrode 309;
and a gate 312 located on a side of the second substrate 302 facing the insulating layer 308, for receiving a gate signal.
The gate 312 is used for controlling the switching control of a thin film transistor (Thin Film Transistor, TFT) Metal-Oxide-Semiconductor Field-Effect Transistor (MOS) transistor, and when the gate signal received by the gate 312 is high-level telecommunication, the MOS transistor is turned on, and the source and drain 309 are turned on.
In this embodiment, due to the insulating layer 308, short circuits are not sent between the Gate layer 312, the second common electrode Vcom ITO2 304, the Active layer 311 of the oxide channel layer, the drain and source S/D layers 309, and the pixel electrode Pixcel ITO 310.
The embodiment of the application needs to control the switching of the liquid crystal panel in different modes by the switching circuit. The following describes the operation of the control panel 300 according to the embodiment of the present application in different modes.
In a first embodiment of the present application, as shown in fig. 4, the switching circuit includes an operational amplifier OP. When the output end of the operational amplifier OP is connected to the first electrode located on the first common electrode 303, the liquid crystal panel operates in the first mode. The first mode includes a Twisted Nematic (TN) mode.
The operational amplifier OP of the embodiment of the application can provide stable voltage for the switching circuit, can improve the driving capability of the circuit, and provides larger current on the premise of unchanged voltage.
With continued reference to fig. 4, in one example of the present application, the switching circuit includes a switch for connecting the operational amplifier OP with the first electrode or the second electrode. In a Twisted Nematic (TN) mode, the operational amplifier OP is connected to the first electrode.
Preferably, with continued reference to fig. 4, the change-over switch includes a first switch K1 and a second switch K2; wherein,,
a first end of the first switch K1 is connected with the output end of the operational amplifier OP, a second end of the first switch K1 is connected with the second end of the second switch K2, and a third end of the first switch K1 is connected with the second common electrode;
a first end of the second switch K2 is connected with the first common electrode, a second end of the second switch K2 is connected with a second end of the first switch K1, and a third end of the second switch K2 is grounded;
the first switch K1 and the second switch K2 are both single-pole double-throw switches.
In one example of the present application, when the liquid crystal panel 300 is operated in the first mode and the gate signal received by the gate electrode is a high level signal, a first electric field is established between the first common electrode 303 and the pixel electrode layer 310, and the liquid crystal in the liquid crystal layer 307 rotates in a first direction.
With continued reference to fig. 4, a schematic diagram of a liquid crystal panel according to an embodiment of the present application is shown in a Twisted Nematic (TN) mode.
The first switch K1 is controlled to be closed with the point a, and the switch K2 is controlled to be closed with the point d. The output terminal of the operational amplifier OP is thus connected to the first common electrode Vcom ITO1 303. At this time, the operational amplifier OP supplies the display reference voltage U to the first common electrode Vcom ITO1 303 0 . When a high level signal V is provided to the gate gate The drain is connected to the source, and the drain provides a signal V data The pixel electrode Pixcel ITO 310 is charged. ThenA first electric field E (the first electric field is a vertical electric field) is established between the pixel electrode Pixcel ITO 310 and the first common electrode Vcom ITO1 303, and the liquid crystal rotates in the vertical direction in the electric field E, so as to realize driving of the liquid crystal panel in the TN mode.
In a second embodiment of the present application, as shown In fig. 5, when the output terminal of the operational amplifier OP is connected to the second electrode on the second common electrode 304, the liquid crystal panel 300 operates In a second mode, and the second mode is an In-Plane Switching (IPS) mode.
In one example of the present application, when the output terminal of the operational amplifier OP is connected to the second electrode on the second common electrode 304, the first electrode on the first common electrode 303 is grounded, so that the influence of the static electricity on the surface of the liquid crystal panel on the normal rotation of the liquid crystal molecules can be shielded.
When the liquid crystal panel operates In an In-Plane Switching (IPS) mode, a change-over switch of the Switching circuit connects the operational amplifier OP with the second electrode. When the gate signal received by the gate G is the high level signal V gate And when the second common electrode and the pixel electrode establish a second electric field E, the liquid crystal in the liquid crystal layer rotates along a second direction.
With continued reference to fig. 5, a schematic diagram of the liquid crystal panel according to the embodiment of the present application is shown In an In-Plane Switching (IPS) mode.
The first switch K1 is closed with the point b, and the second switch K2 is closed with the point c (in IPS mode, the first common electrode Vcom ITO1 303 is grounded, which can shield the influence of the static electricity on the LCD surface on the normal rotation of the liquid crystal molecules).
At this time, the operational amplifier OP provides the display reference voltage U to the second common electrode Vcom ITO2 304 0 The method comprises the steps of carrying out a first treatment on the surface of the The grid provides a high level signal V gate The drain is connected to the source, and the drain provides a signal V data Charging the pixel electrode Pixcel ITO 310, and finally establishing electricity between the pixel electrode Pixcel ITO 310 and the second common electrode Vcom ITO2 304 as shown in fig. 5And a field E, in which the liquid crystal is rotated, i.e., in which the liquid crystal panel is driven in the IPS mode.
According to the embodiment of the application, the driving modes of TN and IPS of the liquid crystal panel can be flexibly switched according to different scenes applied by the liquid crystal panel, so that the optimal display effect under different application scenes is achieved.
In addition, compared with the IPS display screen in the conventional technology, the size of the Active oxide channel layer is also adjusted, which increases the contact area between the Active oxide channel layer and the source and drain electrodes, so as to reduce the contact resistance.
The liquid crystal panel is provided with a first substrate, a second substrate, a first public electrode, a second public electrode and a switching circuit which are opposite to each other, and the switching circuit is connected with the first public electrode or the second public electrode to control the liquid crystal panel to switch in different working modes. The embodiment of the application can realize the switching of the liquid crystal panel under two modes, has all the advantages of the liquid crystal panel under two modes, can switch the liquid crystal panel under different modes under different application scenes, and realizes the maximization of the display effect under specific use scenes.
As shown in fig. 6, the present application also provides a liquid crystal display device 600 including the liquid crystal panel 300 shown in fig. 3.
The liquid crystal display device of the embodiment of the present application has the same advantages as the aforementioned liquid crystal panel because it can perform the functions of the aforementioned liquid crystal panel.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above illustrative embodiments are merely illustrative and are not intended to limit the scope of the present application thereto. Various changes and modifications may be made therein by one of ordinary skill in the art without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as set forth in the appended claims.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, e.g., the division of the elements is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple elements or components may be combined or integrated into another device, or some features may be omitted or not performed.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the present application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in order to streamline the application and aid in understanding one or more of the various inventive aspects, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof in the description of exemplary embodiments of the application. However, the method of this application should not be construed to reflect the following intent: i.e., the claimed application requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be combined in any combination, except combinations where the features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
Various component embodiments of the present application may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some of the modules according to embodiments of the present application may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present application may also be embodied as device programs (e.g., computer programs and computer program products) for performing part or all of the methods described herein. Such a program embodying the present application may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
The foregoing is merely illustrative of specific embodiments of the present application and the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A liquid crystal panel, the liquid crystal panel comprising:
a first substrate and a second substrate facing each other;
a first common electrode positioned at one side of the first substrate facing the second substrate;
a second common electrode positioned at one side of the second substrate facing the first substrate;
and the switching circuit is used for being connected with the first public electrode or the second public electrode so as to control the liquid crystal panel to be switched in different working modes.
2. The liquid crystal panel according to claim 1, further comprising:
the first alignment layer is positioned on one side of the first substrate facing the second substrate and is positioned between the first common electrode and the second common electrode;
the second alignment layer is positioned on one side of the second substrate facing the first substrate and is positioned between the first common electrode and the second common electrode;
a liquid crystal layer located between the first alignment layer and the second alignment layer;
the first alignment layer and the second alignment layer are used to provide liquid crystal molecules in the liquid crystal layer with a plurality of different deflection directions.
3. The liquid crystal panel according to claim 2, further comprising:
an insulating layer between the second common electrode and the second alignment layer;
the drain electrode and the source electrode are positioned in the insulating layer;
a pixel electrode layer located at one side of the insulating layer facing the second alignment layer and connected with the drain electrode;
an oxide channel layer in the insulating layer, connected to the drain electrode and the source electrode;
and the grid electrode is positioned in the insulating layer and is used for receiving a grid electrode signal.
4. A liquid crystal panel according to claim 3, wherein the switching circuit comprises an operational amplifier;
when the output end of the operational amplifier is connected with a first electrode positioned on the first public electrode, the liquid crystal panel works in a first mode;
when the output end of the operational amplifier is connected with the second electrode positioned on the second common electrode, the liquid crystal panel works in a second mode.
5. The liquid crystal panel of claim 4, wherein the first electrode on the first common electrode is grounded when an output terminal of the operational amplifier is connected to the second electrode on the second common electrode.
6. The liquid crystal panel according to claim 4, wherein the switching circuit includes a switch for connecting the operational amplifier with the first electrode or the second electrode.
7. The liquid crystal panel of claim 6, wherein the change-over switch comprises a first switch and a second switch; wherein,,
a first end of the first switch is connected with the output end of the operational amplifier, a second end of the first switch is connected with the second end of the second switch, and a third end of the first switch is connected with the second common electrode;
the first end of the second switch is connected with the first common electrode, the second end of the second switch is connected with the second end of the first switch, and the third end of the second switch is grounded;
the first switch and the second switch are both single pole double throw switches.
8. The liquid crystal panel according to claim 4, wherein,
when the liquid crystal panel works in the first mode and the grid signal received by the grid is a high-level signal, a first electric field is established between the first common electrode and the pixel electrode, and liquid crystals in the liquid crystal layer rotate along a first direction;
when the liquid crystal panel works in the second mode and the grid signal received by the grid is a high-level signal, the second common electrode and the pixel electrode establish a second electric field, and liquid crystals in the liquid crystal layer rotate along a second direction.
9. The liquid crystal panel of claim 4, wherein the first mode comprises a twisted nematic mode; the second mode includes a planar transition mode.
10. A liquid crystal display device, characterized in that the liquid crystal display device comprises the liquid crystal panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310526342.6A CN116300225A (en) | 2023-05-11 | 2023-05-11 | Liquid crystal panel and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310526342.6A CN116300225A (en) | 2023-05-11 | 2023-05-11 | Liquid crystal panel and liquid crystal display device |
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| CN116300225A true CN116300225A (en) | 2023-06-23 |
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| CN101435957A (en) * | 2007-11-14 | 2009-05-20 | 海帝士科技公司 | In-plane switching mode liquid crystal display device |
| WO2015010422A1 (en) * | 2013-07-25 | 2015-01-29 | 京东方科技集团股份有限公司 | Liquid crystal display panel and display device |
| CN106597698A (en) * | 2016-11-10 | 2017-04-26 | 深圳天珑无线科技有限公司 | Liquid crystal display panel, liquid crystal display device and display control method |
| CN114740644A (en) * | 2022-04-19 | 2022-07-12 | 武汉华星光电技术有限公司 | Display panel and display terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435957A (en) * | 2007-11-14 | 2009-05-20 | 海帝士科技公司 | In-plane switching mode liquid crystal display device |
| WO2015010422A1 (en) * | 2013-07-25 | 2015-01-29 | 京东方科技集团股份有限公司 | Liquid crystal display panel and display device |
| CN106597698A (en) * | 2016-11-10 | 2017-04-26 | 深圳天珑无线科技有限公司 | Liquid crystal display panel, liquid crystal display device and display control method |
| CN114740644A (en) * | 2022-04-19 | 2022-07-12 | 武汉华星光电技术有限公司 | Display panel and display terminal |
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