CN111308800A - Pixel electrode, liquid crystal display device and using method thereof - Google Patents
Pixel electrode, liquid crystal display device and using method thereof Download PDFInfo
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- CN111308800A CN111308800A CN201911261491.4A CN201911261491A CN111308800A CN 111308800 A CN111308800 A CN 111308800A CN 201911261491 A CN201911261491 A CN 201911261491A CN 111308800 A CN111308800 A CN 111308800A
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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
Abstract
The application relates to a pixel electrode, a liquid crystal display device and a using method thereof. The pixel electrode has a plurality of slit patterns arranged in a first direction; the slit pattern has a main pattern region and a first edge pattern region; the main pattern region includes a first main plane and a second main plane spaced in a first direction and parallel to each other; the first edge pattern region includes a first edge plane and a second edge plane; one end of the first edge plane and one end of the second edge plane are respectively connected with the first main plane and the second main plane, and the other end of the first edge plane is connected with the other end of the second edge plane; a first included angle is formed between the first edge plane and the first main plane; a second included angle is formed between the second edge plane and the second main plane; wherein: the first included angle and the second included angle are both larger than 90 degrees and smaller than 180 degrees; or the first included angle is greater than 180 ° and less than 270 °, and the second included angle is greater than 90 ° and less than 180 °. The design realizes the display function and has the function of a writing board.
Description
Technical Field
The application relates to the technical field of display, in particular to a pixel electrode, a liquid crystal display device and a using method of the liquid crystal display device.
Background
Thin Film Transistor Liquid Crystal Display (TFT-LCD) has features of small volume, low power consumption, no radiation, etc., and has been rapidly developed in recent years, especially in large-sized Display devices such as televisions. However, at present, the TFT-LCD is mainly used for display and has a single function.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
The present application is directed to a pixel electrode, a liquid crystal display device and a method for using the same, which can make the liquid crystal display device have not only a display function but also a tablet function.
A first aspect of the present application provides a pixel electrode having a plurality of slit patterns arranged in a first direction; the slit pattern has a main pattern region and a first edge pattern region located at one end of the main pattern region;
the main pattern region includes a first main plane and a second main plane spaced apart in a first direction and parallel to each other;
the first edge pattern region includes a first edge plane and a second edge plane; one end of the first edge plane is connected with the first main plane, one end of the second edge plane is connected with the second main plane, and the other end of the first edge plane is connected with the other end of the second edge plane; a first included angle is formed between the first edge plane and the first main plane; a second included angle is formed between the second edge plane and the second main plane; wherein:
the first included angle and the second included angle are both larger than 90 degrees and smaller than 180 degrees; or
The first included angle is greater than 180 degrees and less than 270 degrees, and the second included angle is greater than 90 degrees and less than 180 degrees.
In an exemplary embodiment of the present application, the first main plane and the second main plane extend in a second direction, and the second direction is non-perpendicular to the first direction.
In an exemplary embodiment of the present application, the first edge pattern region further includes a first connection plane having both ends connected to the other end of the first edge plane and the other end of the second edge plane, respectively, the first connection plane extending in the first direction.
In an exemplary embodiment of the present application, the middle of the main pattern area has a middle link bar, the middle link bar has a first middle link surface and a second middle link surface spaced apart in the second direction, and both ends of the first middle link surface and the second middle link surface are connected to the first main plane and the second main plane, respectively; wherein:
the first middle connecting surface and the second middle connecting surface are both planes extending in the first direction.
In an exemplary embodiment of the present application, the slit pattern further includes a second edge pattern region at an end of the main pattern region remote from the first edge pattern region; wherein:
the second edge pattern area comprises a third edge plane, a fourth edge plane and a second connecting plane, one end of the third edge plane is connected with the first main plane, one end of the fourth edge plane is connected with the second main plane, and the other end of the fourth edge plane is connected with the other end of the second edge plane respectively and connected with two ends of the second connecting plane.
A second aspect of the present application provides a pixel electrode having a plurality of slit patterns arranged in a first direction; at least one of the two ends of the slit pattern is open.
In an exemplary embodiment of the present application, one of both ends of each of the slit patterns is closed, and the other end thereof is open; wherein:
the end parts of the slit patterns in the opening shape are positioned on the same side; or
The end parts of the adjacent slit patterns in an opening shape are arranged in a staggered mode.
In an exemplary embodiment of the present application, both ends of the slit pattern are open;
the slit pattern has a middle connection bar at a middle thereof to divide the slit pattern into a first slit portion and a second slit portion, the middle connection bar extending in a first direction, wherein:
the extending directions of the first slit part and the second slit part are the same; or
The first slit portion and the second slit portion are different in extending direction, and are symmetrically arranged with respect to a center line of the middle connecting bar in the first direction.
A third aspect of the present application provides a liquid crystal display device, comprising: the liquid crystal display panel comprises an array substrate, a color film substrate and liquid crystal molecules, wherein the array substrate and the color film substrate are arranged in an opposite box manner, and the liquid crystal molecules are filled between the array substrate and the color film substrate;
the array substrate comprises a substrate, a first electrode, an insulating layer and a second electrode which are sequentially formed, and an electric field formed between the first electrode and the second electrode can control the deflection of liquid crystal;
wherein at least one of the first electrode and the second electrode is the pixel electrode of any one of the above.
A fourth aspect of the present application provides a method for using a liquid crystal display device, where the liquid crystal display device is the above liquid crystal display device, and the method for using the liquid crystal display device includes:
controlling the display surface of the liquid crystal display device to realize first gray scale display;
applying pressure to the display surface of the liquid crystal display device to form a pressing trace on the display surface of the liquid crystal display device;
controlling a display surface of the liquid crystal display device to realize second gray scale display so as to eliminate the pressing traces;
the gray scale voltage displayed by the first gray scale is greater than the gray scale voltage displayed by the second gray scale.
The technical scheme provided by the application can achieve the following beneficial effects:
by designing one end of a slit pattern in a pixel electrode into a first edge pattern area or into an opening shape, under the specific picture display, the deflection direction of liquid crystal molecules at the position can be opposite to the deflection direction of liquid crystal in a main pattern area in the slit pattern, and the deflection angle of the liquid crystal molecules at the position can reach more than 15 degrees, so that when pressure is applied to the display surface, namely when the display surface is pressed, the pressed position can be locally darkened, and a pressing trace is formed, namely: a tablet function of the liquid crystal display device is realized in which, after pressing, the pressed portion is stably aligned with the electric field and cannot be restored for a long time to be observed by human eyes.
In the present application, in order to restore the display function of the liquid crystal display device, it is only necessary to control the display surface of the liquid crystal display device to realize a low gray level such as L0 screen display, that is: reducing the voltage gray scale to eliminate pressing traces; after the pressing trace is eliminated, normal liquid crystal display signals are input to realize a normal display function.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application;
fig. 2 is a schematic plan view of a pixel electrode according to a first embodiment of the present application;
FIG. 3 is a schematic diagram showing the deflection angles of liquid crystal molecules in each region when a pixel electrode according to the first embodiment of the present application is used;
fig. 4 is a schematic plan view of a pixel electrode according to the second embodiment of the present application;
fig. 5 is a schematic plan view of a pixel electrode according to a third embodiment of the present application;
fig. 6 and 7 are schematic plan views of a pixel electrode according to a fourth embodiment of the present application;
fig. 8 is a schematic plan view of a pixel electrode according to the fifth embodiment of the present application;
fig. 9 is a schematic plan view of a pixel electrode according to a sixth embodiment of the present application;
fig. 10 and 11 are schematic plan views respectively illustrating a pixel electrode according to a seventh embodiment of the present application;
fig. 12 is a schematic plan view of a pixel electrode according to an eighth embodiment of the present application;
FIG. 13 is a flow chart showing a method of using the liquid crystal display device according to an embodiment of the present application;
fig. 14 is a schematic diagram showing liquid crystal molecule deflection angles at different voltages when pixel electrodes according to the second to eighth embodiments of the present application are used.
Reference numerals:
10. a color film substrate; 101. a substrate; 102. a color film layer; 11. an array substrate; 111. a substrate base plate; 112. a common electrode; 113. an insulating layer; 114. a pixel electrode; 12. liquid crystal molecules.
1140. A first major plane; 1141. a second major plane; 1142. a first edge plane; 1143. a second edge plane; 1144. a first connection plane; 1145. a third edge plane; 1146. a fourth edge plane; 1147. a second connection plane; 1148. a first middle connection face; 1148b, a first mid-plane; 1148 a; a second mid-plane; 1149. a second middle connection face; 1150. a first slit portion; 1151. a second slit portion.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting on the number of their objects.
Currently, TFT-LCDs can be classified into: twisted Nematic (TN), In-Plane switching (IPS) and Advanced Super-dimensional field switching (ADS); among them, the ADS mode lcd device should have the advantages of wide viewing angle, high aperture ratio, high transmittance, high resolution, fast response speed, low power consumption, low color difference, etc. and thus is widely used, and becomes one of the important technologies in the lcd field.
Based on this, the liquid crystal display device of the present application may be selected as the ADS mode. In detail, the liquid crystal display device may include an array substrate 11 and a color filter substrate 10 which are arranged in a box-to-box manner, and liquid crystal molecules 12 filled between the array substrate 11 and the color filter substrate 10.
The color film substrate 10 may include a substrate 101 and a color film layer 102 formed on the substrate 101, where the color film layer 102 is used for implementing color display. The array substrate 11 may include a substrate 111, and a first electrode, an insulating layer 113, and a second electrode sequentially formed. For example, the substrate 111 may include a plurality of TFTs arranged in an array; the first electrode may be the common electrode 112, and the common electrode 112 may be a whole surface, that is: a plate-like electrode; for providing a common voltage signal; and the second electrode may be a pixel electrode 114, and the pixel electrode 114 may have a slit pattern, that is: a slit electrode for providing a pixel voltage signal for display; a multi-dimensional electric field is generated between the pixel electrode 114 and the common electrode 112 to rotate the liquid crystal. But not limited thereto, the first electrode may also be the pixel electrode 114, and the second electrode may be the common electrode 112. The first electrode and the second electrode may be made of Indium Tin Oxide (ITO).
In order to make the liquid crystal display device have a plurality of functions, in the present application: besides the display function, the multifunctional pen also can have a tablet function so as to be conveniently applied to meeting room demonstration; therefore, the pixel electrode 114 in the array substrate 11 is improved.
The structure of the pixel electrode 114 in different embodiments will be described in detail with reference to the drawings.
Example one
As shown in fig. 2, the pixel electrode 114 has a plurality of slit patterns arranged in the first direction X; the slit pattern has a main pattern region, a first edge pattern region and a second edge pattern region located at two ends of the main pattern region; it should be noted that the slit pattern is a region not filled with cross-hatching in the drawing, the main pattern region is a region located between the dotted line a and the dotted line B in the slit pattern in the drawing, the first edge pattern region is a region located on the right side of the dotted line B in the slit pattern in the drawing, and the second edge pattern region is a region located on the left side of the dotted line a in the slit pattern in the drawing; specifically, the method comprises the following steps:
the main pattern region may include a first main plane 1140 and a second main plane 1141 spaced in the first direction X and parallel to each other; the first major plane 1140 and the second major plane 1141 extend in the second direction Y, which is non-perpendicular to the first direction X, so that the design can increase the response time. But not limited thereto, the second direction Y may be perpendicular to the first direction X. In the present embodiment, the first and second major planes 1140 and 1141 may have a distance of 7.8 μm in a direction perpendicular to the second direction Y, and the distance between the main pattern regions of the adjacent slit patterns may have a distance of 2.9 μm in a direction perpendicular to the second direction Y, but is not limited thereto.
The first edge pattern region may include a first edge plane 1142, a second edge plane 1143 and a first connection plane 1144, wherein one end of the first edge plane 1142 is connected to the first main plane 1140, one end of the second edge plane 1143 is connected to the second main plane 1141, and the other end of the second edge plane 1143 and the other end of the first edge plane 1142 are respectively connected to two ends of the first connection plane 1144, the first connection plane 1144 extends in the first direction X, a first included angle α is formed between the first edge plane 1142 and the first main plane 1140, and a second included angle β is formed between the second edge plane 1143 and the second main plane 1141;
the second edge pattern region includes a third edge plane 1145, a fourth edge plane 1146 and a second connection plane 1147, one end of the third edge plane 1145 is connected to the first main plane 1140, one end of the fourth edge plane 1146 is connected to the second main plane 1141, and the other end of the fourth edge plane 1146 and the other end of the third edge plane 1145 are connected to two ends of the second connection plane 1147, respectively; the second connecting plane 1147 extends in the first direction X, and the third edge plane 1145 and the first main plane 1140 form a third included angle γ, and the fourth edge plane 1146 and the second main plane 1141 form a fourth included angle θ.
As can be seen from the above, both ends of the slit pattern in the present embodiment are closed.
The first angle α and the fourth angle θ are both greater than 90 ° and less than 180 °, i.e. the angle between the first edge plane 1142 and the first connection plane 1144 and the angle between the fourth edge plane 1146 and the second connection plane 1147 are both greater than 90 ° and less than 180 °, so that the liquid crystal molecules can have an angular transition in the edge region of the slit pattern, and the electric field is substantially the same as the direction of the main pattern region near the first edge plane 1142 and near the fourth edge plane 1146, i.e. the liquid crystal molecule deflection angle is substantially the same as the deflection direction of the main pattern region near the first edge plane 1142 and near the fourth edge plane 1146.
The second angle β and the third angle γ are both 180 °, i.e., the angle between the second edge plane 1143 and the first connecting plane 1144, and the angle between the third edge plane 1145 and the second connecting plane 1147 can be less than 90 °, which is designed to make the electric field substantially opposite to the direction of the main pattern region near the second edge plane 1143 and near the third edge plane 1145, i.e., the liquid crystal molecule deflection angle is substantially opposite to the direction of the main pattern region near the second edge plane 1143 and near the third edge plane 1145.
For example, the first and second edge pattern regions may be centrosymmetric with respect to the center of the main pattern region, but are not limited thereto.
Based on the above, by designing the shape of the edge pattern region, the azimuth angle of the liquid crystal molecules in the edge pattern region relative to the liquid crystal molecules in the main pattern region is suddenly changed, that is: the azimuth angles are arranged in opposite directions, and the discontinuous arrangement is used for expanding to a main pattern area under a high gray scale display picture (such as a gray scale L255 picture) and applying pressure to the display surface of the liquid crystal display device (namely, pressing the display surface of the liquid crystal display device), so that a local dark condition occurs at a pressed part to form a pressing trace, namely: the tablet function of the liquid crystal display device is realized. It should be noted that after the pressing, the pressed portion and the electric field form a stable alignment and cannot be recovered for a long time to be observed by human eyes.
In addition, in the present embodiment, in order to restore the display function of the liquid crystal display device, it is only necessary to control the display surface of the liquid crystal display device to realize a low gray level such as L0 screen display, that is: reducing the voltage gray scale to eliminate pressing traces; after the pressing trace is eliminated, normal liquid crystal display signals are input to realize a normal display function.
However, it should be noted that this design cannot guarantee that each lcd device will have pressing traces, as shown in table 1:
in table 1, three liquid crystal display device samples having the pixel electrode 114 of the present embodiment are listed, and it should be noted that, in the three liquid crystal display device experimental samples, not only the structure of the pixel electrode 114 is completely the same, but also it is shown in fig. 2; and the other structures are also identical. However, in actual comparison, it was found that the pressing trace did not occur in each of the three liquid crystal display device samples; pressing traces are generated only when liquid crystal molecules with the deflection direction opposite to that of the main pattern area and the deflection angle (namely, the reverse deflection angle) larger than 15 degrees appear in the edge pattern area; while no pressing mark was produced in the samples having reverse deflection angles of 8.7 ° and 10.3 °. Further, it should be understood that the transmittance in the present embodiment may be defined as 100% as a reference for the transmittance in the subsequent embodiments.
Specifically, as shown in fig. 3, the ordinate in fig. 3 represents the liquid crystal molecule deflection angle; the left side of the solid line C in fig. 3 represents the liquid crystal molecule deflection angle in the main pattern region, approximately in the range of 45 ° to 70 °; solid lines C and D in FIG. 3 represent the liquid crystal molecule deflection angles in the edge pattern regions (i.e., the first edge pattern region and the second edge pattern region), and it can be seen from FIG. 3 that the liquid crystal molecule deflection angles in the edge pattern regions fluctuate greatly, which is an electric field disturbance region, and the liquid crystal molecule deflection angles cannot be guaranteed to be below minus 15 °; the right side of the solid line D in fig. 3 is a region of the pixel electrode where no slit is provided, and no electric field is applied, and the liquid crystal molecules are not deflected.
That is, if the pixel electrode 114 in the liquid crystal display device is the pixel electrode 114 shown in fig. 2 in this embodiment, there is a certain chance whether the liquid crystal display device can have a tablet function, and therefore, the pixel electrode 114 shown in fig. 2 in this embodiment is not recommended.
Example two
In this embodiment, as shown in fig. 4, the main pattern region of the slit pattern in the pixel electrode 114 may be the same as the main pattern region in the first embodiment, and is not repeated herein; the first edge pattern region of the slit pattern can be different from the first edge pattern region in the first embodiment, and the main difference is:
the second edge plane 1143 extends in different directions, specifically, as shown in fig. 4, the second included angle β formed between the second edge plane 1143 and the second main plane 1141 is greater than 90 ° and less than 180 °, that is, the ends of the second edge plane 1143 and the first edge plane 1142 away from the main pattern area extend toward each other, in which case, the ends of the second edge plane 1143 and the first edge plane 1142 away from the main pattern area may be directly connected, or may be connected by the first connecting plane 1144, that is, the ends of the second edge plane 1143 and the first edge plane 1142 away from the main pattern area may be respectively connected to the two ends of the first connecting plane 1144.
It should be noted that the first connecting plane 1144 in the present embodiment may also extend in the first direction X, but is not limited thereto, as the case may be.
When the first connecting plane 1144 extends in the first direction X, the angle between the second edge plane 1143 and the first connecting plane 1144 may be greater than 90 ° and less than 180 °, so that the electric field may be substantially opposite to the main pattern region near the second edge plane 1143, compared to the first embodiment, that is: the liquid crystal molecule deflection angle is substantially opposite to the deflection direction of the main pattern area near the second edge plane 1143; but also ensures that the reverse deflection angle of the liquid crystal molecules near the second edge plane 1143 reaches more than 15 °, so as to ensure that when pressure is applied to the display surface of the liquid crystal display device (i.e. the display surface of the liquid crystal display device is pressed) under a high gray scale such as L255 display picture, pressing traces can be formed, namely: so as to ensure that the liquid crystal display device can have the function of a writing board.
As can be seen from table 1 below, in the pixel electrode 114 shown in fig. 4 of the present embodiment, liquid crystal molecules having a reverse deflection angle of 35 ° exist near the second edge plane 1143, and the transmittance at this time can reach 97.90%.
Optionally, the second edge pattern region of the slit pattern in this embodiment and the second edge pattern region in the first embodiment may be the same. But not limited thereto, the second edge pattern region of the slit pattern in the embodiment and the second edge pattern region in the first embodiment may also be different; the main differences are that:
the third edge plane 1145 extends in a different direction and is not shown. Specifically, in the present embodiment, the third included angle γ formed between the third edge plane 1145 and the first main plane 1140 may be greater than 90 ° and less than 180 °. That is, the third edge plane 1145 and the fourth edge plane 1146 extend away from one end of the main pattern region toward a direction approaching each other; in this case, the ends of the third edge plane 1145 and the fourth edge plane 1146 away from the main pattern area may be directly connected; it can also be connected by a second connection plane 1147, namely: the ends of the third edge plane 1145 and the fourth edge plane 1146 away from the main pattern area may be connected to both ends of the second connection plane 1147, respectively. The design purpose of the first edge pattern region in this embodiment can be referred to, and will not be repeated herein. Because the design makes the first edge pattern area and the second edge pattern area have liquid crystal molecules with the reverse deflection angle of more than 15 degrees, the generation degree of the pressing traces can be increased, and the tablet function of the liquid crystal display device is enhanced.
Further, in the present embodiment, the second edge pattern region and the first edge pattern region may be centrosymmetric with respect to the center of the main pattern region.
It should be noted that, in this embodiment, the extending direction of the first edge plane 1142 in the first edge pattern region and the extending direction of the fourth edge plane 1146 in the second edge pattern region may be the same as the extending direction of the first edge plane 1142 in the first edge pattern region and the extending direction of the fourth edge plane 1146 in the second edge pattern region in the first embodiment.
EXAMPLE III
In this embodiment, as shown in fig. 5, the main pattern region of the slit pattern in the pixel electrode 114 may be the same as the main pattern region in the second embodiment, and is not repeated herein; the first edge pattern region of the slit pattern can be different from the first edge pattern region in the second embodiment, and the main difference is:
the first edge plane 1142 extends in different directions, specifically, as shown in fig. 5, the first included angle α formed between the first edge plane 1142 and the first main plane 1140 is greater than 180 ° and less than 270 °, that is, the end of the first edge plane 1142 away from the main pattern region extends to the side away from the second main plane 1141, in which case, the ends of the first edge plane 1142 and the second edge plane 1143 away from the main pattern region may be directly connected, or may be connected by the first connecting plane 1144, that is, the ends of the first edge plane 1142 and the second edge plane 1143 away from the main pattern region may be respectively connected to the two ends of the first connecting plane 1144.
In this embodiment, the design not only ensures that the first edge pattern region has liquid crystal molecules with a reverse deflection angle (i.e. an angle opposite to the liquid crystal deflection angle of the main pattern region) of more than 15 ° to ensure that pressing traces can be formed when pressure is applied to the display surface of the liquid crystal display device (i.e. the display surface of the liquid crystal display device is pressed) under a specific display screen (e.g. a gray level L255 screen), namely: so as to ensure that the liquid crystal display device can have the function of a writing board; and the transmittance can be improved compared with the second embodiment.
As can be seen from table 1 below, in the pixel electrode 114 shown in fig. 5 of the present embodiment, liquid crystal molecules having a reverse deflection angle of up to 30 ° exist in the first edge pattern region, and the transmittance at this time can reach 98.57%.
In addition, the second edge pattern region of the slit pattern in this embodiment may be the same as the second edge pattern region in the first or second embodiment. But not limited thereto, the second edge pattern region of the slit pattern in the present embodiment may be different from the second edge pattern regions in the first and second embodiments; the main differences are that:
the fourth edge plane 1146 extends in a different direction and is not shown. Specifically, in the present embodiment, the fourth included angle θ formed between the fourth edge plane 1146 and the second main plane 1141 may be greater than 180 ° and smaller than 270 °. That is, the end of the fourth edge plane 1146 away from the main pattern region extends to the side away from the first main plane 1140; in this case, the fourth edge plane 1146 and the end of the third edge plane 1145 away from the main pattern area may be directly connected; it can also be connected by a second connection plane 1147, namely: the ends of the fourth edge plane 1146 and the third edge plane 1145 away from the main pattern area may be connected to both ends of the second connection plane 1147, respectively.
Further, the second edge pattern region and the first edge pattern region may be centrosymmetric with respect to the center of the main pattern region.
It should be noted that, in this embodiment, the extending direction of the second edge plane 1143 in the first edge pattern region and the extending direction of the third edge plane 1145 in the second edge pattern region may be the same as the extending direction of the second edge plane 1143 in the first edge pattern region and the extending direction of the third edge plane 1145 in the second edge pattern region in the second embodiment.
Example four
In this embodiment, the first edge pattern region of the slit pattern in the pixel electrode 114 can be the same as the first edge pattern region in the third embodiment, and the second edge pattern region can be the same as the second edge pattern region in the first embodiment, as shown in fig. 6; but not limited thereto, the first edge pattern region in the present embodiment may also be the same as the first edge pattern region in the second embodiment; the second edge pattern region in this embodiment may also be the same as the second edge pattern region in the second or third embodiment, and details are not repeated here. The main pattern area of the slit pattern may be different from that of the first embodiment, the second embodiment, or the third embodiment, and the main differences are as follows:
in the present embodiment, the middle portion of the main pattern region has a middle connecting bar, while in the first, second and third embodiments, the middle portion of the main pattern region does not have a middle connecting bar. Specifically, in this embodiment, the middle connecting strip has a first middle connecting surface 1148 and a second middle connecting surface 1149 disposed at an interval in the second direction Y, and two ends of the first middle connecting surface 1148 and the second middle connecting surface 1149 are connected to the first main plane 1140 and the second main plane 1141, respectively; for example, the first central attachment surface 1148 may be the surface of the central attachment strip remote from the first edge pattern region, and the second central attachment surface 1149 may be the surface of the central attachment strip adjacent to the first edge pattern region. The design makes the corner formed by the first middle connecting surface 1148 and the second main surface 1141 in the middle connecting strip have liquid crystal molecules with a reverse deflection angle of more than 15 degrees, that is: the regions capable of making the reverse deflection angle of the liquid crystal molecules reach more than 15 degrees are added, that is, at least two regions in the embodiment can have the liquid crystal molecules with the reverse deflection angle of more than 15 degrees, so that the generation degree of the pressing traces can be increased, and the tablet function of the liquid crystal display device is enhanced.
Alternatively, the first and second middle connection surfaces 1148, 1149 may be planar surfaces extending in the first direction X, as shown in fig. 6. But not limited thereto, the first middle connecting surface 1148 may also be a bent surface formed by a plurality of planes; specifically, as shown in fig. 7, the first middle connection surface 1148 has at least a first middle plane 1148b and a second middle plane 1148a, the first middle plane 1148b being connected to the second main plane 1141 by the second middle plane 1148a, wherein: the first middle plane 1148b may be a plane extending in the first direction X; the angle between the second central plane 1148a and the first central plane 1148b is greater than 90 ° and less than 180 °; the angle between the second central plane 1148a and the second main plane 1141 is larger than 90 ° and smaller than 180 °, so that the reverse deflection angle of the liquid crystal molecules at the corner formed by the first central connecting surface 1148 and the second main plane 1141 can be increased, thereby increasing the occurrence degree of the pressing mark.
As can be seen from table 1 below, in the pixel electrode 114 shown in fig. 6 of the present embodiment, there are two regions where liquid crystal molecules with a reverse deflection angle of up to 30 ° exist, one region is the first edge pattern region, and the other region is a corner formed by the first middle connecting surface 1148 and the second main surface 1141. And the transmittance can reach 89.44 percent.
EXAMPLE five
In this embodiment, as shown in fig. 8, the slit pattern in the pixel electrode 114 is different from the slit patterns in the first, second, third, and fourth embodiments, and the main differences are as follows:
in the first, second, third and fourth embodiments, both ends of the slit pattern are closed, and one end of the two ends of the slit pattern is closed and the other end is open; as shown in fig. 8, the ends of the slits in the pixel electrode 114 that are open are located on the same side.
Specifically, in the present embodiment, each slit pattern may include a main pattern region (right side of the dotted line a shown in fig. 8) and a second edge pattern region (left side of the dotted line a shown in fig. 8), the second edge pattern region is located at one side of the main pattern region, and one side of the main pattern region away from the second edge pattern region is open, such that the design can ensure that the reverse deflection angle of the liquid crystal molecules at one end of the slit pattern, which is open, can reach more than 15 °, so as to ensure that a pressing trace can be formed when pressure is applied to the display surface of the liquid crystal display device (i.e. pressing the display surface of the liquid crystal display device) at a high gray scale such as L255 display screen, that: so as to ensure that the liquid crystal display device can have the function of a writing board.
It should be noted that, in the present embodiment, the design schemes of the main pattern area and the second edge pattern area can refer to the design schemes of the main pattern area and the second edge pattern area in the first embodiment; that is, on the basis of the pixel electrode 114 in the first embodiment, the first edge pattern region in the slit pattern is removed to obtain the slit pattern shown in fig. 8 in the present embodiment. However, the design of the second edge pattern region in the present embodiment can refer to the design of the second edge pattern in "the second edge pattern region and the first edge pattern region can be in central symmetry with respect to the center of the main pattern region" mentioned in the second embodiment or the third embodiment.
It should be understood that the reference numerals appearing in fig. 8 of this embodiment are the same as the structures represented by the same reference numerals in the first embodiment, and detailed description thereof is omitted.
As can be seen from table 2 below, in the pixel electrode 114 shown in fig. 8 of the present embodiment, liquid crystal molecules having a reverse deflection angle of 35 ° exist at one end of the slit pattern, and the transmittance of the liquid crystal molecules can reach 104.89%.
EXAMPLE six
In this embodiment, as shown in fig. 9, the slit pattern of the pixel electrode 114 is different from the slit pattern of the pixel electrode 114 in the fifth embodiment, and the main difference is that:
in the fifth embodiment, the open ends of the slit patterns are located on the same side; in this embodiment, the open ends of the adjacent slit patterns are staggered.
Specifically, in the present embodiment, each slit pattern may include a main pattern region, and one of the adjacent slit patterns includes a second edge pattern region (left side of the dotted line a shown in fig. 9), and the other includes a first edge pattern region (right side of the dotted line B shown in fig. 9). This design ensures that the reverse deflection angle of the liquid crystal molecules at the end of the slit pattern that is open can be 15 ° or more, to ensure that, when pressure is applied to the display surface of the liquid crystal display device (i.e., the display surface of the liquid crystal display device is pressed) at a high gray scale such as L255 display screen, pressing traces, namely: so as to ensure that the liquid crystal display device can have the function of a writing board.
It should be noted that, in the present embodiment, the design schemes of the main pattern area, the first edge pattern area, and the second edge pattern area can refer to the design schemes of the main pattern area, the first edge pattern area, and the second edge pattern area in the first embodiment; that is to say, on the basis of the pixel electrode 114 described in the first embodiment, the first edge pattern region of one of the adjacent slit patterns is removed, and the second edge pattern region of the other slit pattern is removed to form the pixel electrode 114 in the present embodiment. However, the design of the first edge pattern region in this embodiment can refer to the first edge pattern region mentioned in the second embodiment or the third embodiment, and the design of the second edge pattern region in this embodiment can refer to the design of the second edge pattern in "the second edge pattern region and the first edge pattern region can be in center symmetry with respect to the center of the main pattern region" mentioned in the second embodiment or the third embodiment.
It should be understood that the reference numerals appearing in fig. 9 of this embodiment are the same as the structures represented by the same reference numerals in the first embodiment, and detailed description thereof is omitted.
As can be seen from table 2 below, in the pixel electrode 114 shown in fig. 9 of the present embodiment, liquid crystal molecules having a reverse deflection angle of up to 32 ° exist at one end of the slit pattern, and the transmittance of the liquid crystal molecules can reach 105.48%.
EXAMPLE seven
In this embodiment, as shown in fig. 10, the slit pattern of the pixel electrode 114 is different from the slit pattern of the pixel electrode 114 in the fourth embodiment, and the main difference is that:
in the fourth embodiment, two ends of the main pattern region in each slit pattern have a first edge pattern region and a second edge pattern region respectively, that is: the two ends of the slit pattern are closed; in this embodiment, both ends of the slit pattern are open.
Specifically, as shown in fig. 10, the design scheme of the slit pattern in the present embodiment can refer to the design scheme of the main pattern region of the slit pattern in the fourth embodiment. In the present embodiment, by providing the middle connecting strip in the middle of the slit pattern, the middle connecting strip may extend in the first direction X, that is: the middle connection strip may include a first middle connection surface 1148 and a second middle connection surface 1149, and the first middle connection surface 1148 and the second middle connection surface 1149 are planes extending in the first direction X; but not limited thereto, the middle connecting strip may also be in other forms; the slit pattern may be divided into a first slit portion 1150 and a second slit portion 1151. The first slit portion 1150 and the second slit portion 1151 extend in the same direction. The first slit portion 1150 and the second slit portion 1151 have open ends (i.e., open ends), such that the reverse deflection angles of the liquid crystal molecules at the open ends of the first slit portion 1150 and the second slit portion 1151 can reach more than 15 °, that is, at least two regions in this embodiment can have liquid crystal molecules with reverse deflection angles of more than 15 °, so as to increase the degree of pressing marks and enhance the tablet function of the liquid crystal display device.
As can be seen from table 1 below, in the pixel electrode 114 shown in fig. 10 of this embodiment, there are two regions where liquid crystal molecules with a reverse deflection angle of up to 30 ° exist, one region is at the opening end of the first slit portion 1150, and the other region is at the opening end of the second slit portion 1151. And the transmittance can reach 99.0 percent.
It should be noted that, in this embodiment, if two ends of the slit patterns are opened, and the extending directions of the first slit portion 1150 and the second slit portion 1151 in each slit pattern are the same, as shown in fig. 11, two groups of slit groups arranged in the first direction X in the pixel electrode 114 are usually required to be provided, which can be respectively defined as a first slit group M and a second slit group N, and each of the first slit group M and the second slit group N includes a plurality of slit patterns arranged in the first direction X, wherein the extending directions of the slit patterns in the first slit group M are the same, the extending directions of the slit patterns in the second slit group N are the same, and the extending directions of the slit patterns in the first slit group M are different from the extending directions of the slit patterns in the second slit group N and are symmetrically provided with respect to the direction perpendicular to the first direction X. However, the design may cause a dark area between the first slit group M and the second slit group N.
Example eight
In this embodiment, as shown in fig. 12, the slit pattern of the pixel electrode 114 is different from the slit pattern of the pixel electrode 114 in the seventh embodiment, and the main difference is that:
in the seventh embodiment, the extending directions of the first slit portion 1150 and the second slit portion 1151 are the same; in this embodiment, the first slit portion 1150 and the second slit portion 1151 in the slit pattern extend in different directions.
Alternatively, as shown in fig. 12, in the present embodiment, the first slit portion 1150 and the second slit portion 1151 are symmetrically disposed about a center line of the middle connecting bar (the middle connecting bar may refer to the description in the seventh embodiment) in the first direction X, so that the reverse deflection angles of the liquid crystal molecules at the opening ends of the first slit portion 1150 and the second slit portion 1151 can reach more than 15 °, that is, in the present embodiment, at least two regions can have liquid crystal molecules with reverse deflection angles of more than 15 °, and therefore, the occurrence degree of the pressing trace can be increased to enhance the tablet function of the liquid crystal display device; in addition, compared with the solution of providing the first slit group and the second slit group in the seventh embodiment, since it is not necessary to provide two slit groups with different extending directions in the first direction X, it is possible to avoid a dark area between the two slit groups with different extending directions.
As can be seen from table 1 below, in the pixel electrode 114 shown in fig. 12 of this embodiment, there are two regions where liquid crystal molecules with a reverse deflection angle of 38 ° exist, one region is at the opening end of the first slit portion 1150, and the other region is at the opening end of the second slit portion 1151. And the transmittance can reach 99.3 percent.
It should be understood that the first slit portion 1150 and the second slit portion 1151 may be asymmetrically disposed, as the case may be.
Wherein table 1 mentioned in any of the preceding examples is as follows:
TABLE 1
It should be noted that, in order to ensure that the liquid crystal display device has a display function and a tablet function, the design of the pixel electrode 114 in the liquid crystal display device of this embodiment preferably adopts the design schemes of embodiment two to embodiment eight. In addition, it should be noted that the design scheme of the pixel electrode 114 in this embodiment is not limited to the schemes described in the second to eighth embodiments, and other design schemes may be adopted as long as the liquid crystal display device has the display function and the tablet function.
In addition, it should be noted that the shapes of the pixel electrodes shown in fig. 2 and fig. 4 to 12 can be understood as an orthographic projection of the pixel electrode 114 on the substrate 111.
An embodiment of the present application further provides a method for using a liquid crystal display device, as shown in fig. 1, the liquid crystal display device may include: the liquid crystal display panel comprises an array substrate 11 and a color film substrate 10 which are arranged in an opposite box manner, and liquid crystal molecules filled between the array substrate 11 and the color film substrate 10; the array substrate 11 may include a substrate 111, and a first electrode, an insulating layer 113 and a second electrode sequentially formed, wherein an electric field formed between the first electrode and the second electrode can control the deflection of the liquid crystal; wherein at least one of the first electrode and the second electrode is the pixel electrode 114 described in any one of the second to eighth embodiments.
Specifically, as shown in fig. 13, the method of using the liquid crystal display device may include steps S1, S2, and S3, wherein:
in step S1, the display surface of the liquid crystal display device is controlled to realize a first gray scale display, where the first gray scale display is a high gray scale display, such as: l255 shows, but is not limited to, this, as the case may be. For example, the display surface of the liquid crystal display device can realize specific screen display through circuit adjustment, that is: the tablet function is turned on.
In step S2, pressure is applied to the display surface of the liquid crystal display device to form a pressing trace on the display surface of the liquid crystal display device. For example, the writing surface may be pressed by a finger or a writing pen to apply pressure to the display surface of the liquid crystal display device, so that a pressing trace is formed on the display surface of the liquid crystal display device.
In step S3, the display surface of the liquid crystal display device is controlled to realize a second gray scale display to eliminate the pressing trace. For example, the display surface of the liquid crystal display device can realize a second gray scale display through circuit adjustment, such as: l0 shows, but is not limited to, as the case may be; to close the tablet function to eliminate pressing traces; it should be noted that the circuit may be an internal structure of the liquid crystal display device.
After the pressing trace is eliminated, normal liquid crystal display signals can be input through circuit adjustment, so that the liquid crystal display device can be used for normal display.
It should be noted that the gray scale voltage of the first gray scale display is greater than the gray scale voltage of the second gray scale display, and specifically, as can be seen from fig. 14, the abscissa represents the voltage, and the ordinate represents the liquid crystal molecule deflection angle. By comparing the states of the liquid crystal molecules at different voltages, it was found that at high voltages: when the voltage is higher than 6.2V (right side of the solid line E in the figure), the display surface may be displayed in the aforementioned first gray scale, and there are liquid crystal molecules with a reverse deflection angle larger than 15 °, so that a pressing trace may be generated when the display surface of the liquid crystal display device is actually pressed. And at low gray levels, namely: when the voltage is 0 to 6.2V (left side of the solid line E in the figure), the display surface may be the aforementioned second gray scale display; and there may be no liquid crystal molecules that undergo reverse deflection or liquid crystal molecules that undergo reverse deflection, but the reverse deflection angle is small, specifically less than 15 °, so that there is no pressing mark when the display surface of the liquid crystal display device is actually pressed.
In summary, the pressing trace can be eliminated by lowering the voltage of the liquid crystal display device (i.e., lowering the gray scale of the liquid crystal display device).
It should be noted that the specific type of the liquid crystal display device in this embodiment is not particularly limited, and any type of the liquid crystal display device commonly used in the art may be used, such as a liquid crystal display, a mobile phone, a computer, a television, and the like, and those skilled in the art may select the liquid crystal display device according to the specific application of the liquid crystal display device, and details are not described herein again.
The liquid crystal display device in this embodiment includes not only the components described in the foregoing embodiments, but also other necessary components and compositions, such as a housing, a circuit board, a power line, and the like, taking the liquid crystal display as an example, and it is well understood in the art that the components can be supplemented accordingly according to the specific requirements of the display device, and further description is omitted here.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
Claims (10)
1. A pixel electrode is characterized in that the pixel electrode is provided with a plurality of slit patterns which are arranged in a first direction; the slit pattern has a main pattern region and a first edge pattern region located at one end of the main pattern region;
the main pattern region includes a first main plane and a second main plane spaced apart in a first direction and parallel to each other;
the first edge pattern region includes a first edge plane and a second edge plane; one end of the first edge plane is connected with the first main plane, one end of the second edge plane is connected with the second main plane, and the other end of the first edge plane is connected with the other end of the second edge plane; a first included angle is formed between the first edge plane and the first main plane; a second included angle is formed between the second edge plane and the second main plane; wherein:
the first included angle and the second included angle are both larger than 90 degrees and smaller than 180 degrees; or
The first included angle is greater than 180 degrees and less than 270 degrees, and the second included angle is greater than 90 degrees and less than 180 degrees.
2. The pixel electrode of claim 1, wherein the first major plane and the second major plane extend in a second direction, the second direction being non-perpendicular to the first direction.
3. The pixel electrode of claim 2,
the first edge pattern region further includes a first connection plane, both ends of the first connection plane are connected to the other end of the first edge plane and the other end of the second edge plane, respectively, and the first connection plane extends in the first direction.
4. A pixel electrode according to claim 3, wherein the main pattern area has a middle connecting bar in a middle portion thereof, the middle connecting bar having a first middle connecting surface and a second middle connecting surface spaced apart in the second direction, both ends of the first middle connecting surface and the second middle connecting surface being connected to the first main plane and the second main plane, respectively; wherein:
the first middle connecting surface and the second middle connecting surface are both planes extending in the first direction.
5. The pixel electrode of claim 1,
the slit pattern further includes a second edge pattern region located at an end of the main pattern region remote from the first edge pattern region; wherein:
the second edge pattern area comprises a third edge plane, a fourth edge plane and a second connecting plane, one end of the third edge plane is connected with the first main plane, one end of the fourth edge plane is connected with the second main plane, and the other end of the fourth edge plane is connected with the other end of the second edge plane respectively and connected with two ends of the second connecting plane.
6. A pixel electrode is characterized in that the pixel electrode is provided with a plurality of slit patterns which are arranged in a first direction; at least one of the two ends of the slit pattern is open.
7. The pixel electrode according to claim 6, wherein one of the two ends of each slit pattern is closed, and the other end is open; wherein:
the end parts of the slit patterns in the opening shape are positioned on the same side; or
The end parts of the adjacent slit patterns in an opening shape are arranged in a staggered mode.
8. The pixel electrode of claim 6,
both ends of the slit pattern are open;
the slit pattern has a middle connection bar at a middle thereof to divide the slit pattern into a first slit portion and a second slit portion, the middle connection bar extending in a first direction, wherein:
the extending directions of the first slit part and the second slit part are the same; or
The first slit portion and the second slit portion are different in extending direction, and are symmetrically arranged with respect to a center line of the middle connecting bar in the first direction.
9. A liquid crystal display device, comprising: the liquid crystal display panel comprises an array substrate, a color film substrate and liquid crystal molecules, wherein the array substrate and the color film substrate are arranged in an opposite box manner, and the liquid crystal molecules are filled between the array substrate and the color film substrate;
the array substrate comprises a substrate, a first electrode, an insulating layer and a second electrode which are sequentially formed, and an electric field formed between the first electrode and the second electrode can control the deflection of liquid crystal;
wherein at least one of the first electrode and the second electrode is the pixel electrode of any one of claims 1 to 8.
10. A method of using a liquid crystal display device according to claim 9, the method comprising:
controlling the display surface of the liquid crystal display device to realize first gray scale display;
applying pressure to the display surface of the liquid crystal display device to form a pressing trace on the display surface of the liquid crystal display device;
controlling a display surface of the liquid crystal display device to realize second gray scale display so as to eliminate the pressing traces;
the gray scale voltage displayed by the first gray scale is greater than the gray scale voltage displayed by the second gray scale.
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