CN111308800A - Pixel electrode, liquid crystal display device and using method thereof - Google Patents

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

Pixel electrode, liquid crystal display device and method of using the same

technical field

The present application relates to the field of display technology, and in particular, to a pixel electrode, a liquid crystal display device, and a method of using the same.

Background technique

Thin Film Transistor Liquid Crystal Display (TFT-LCD) has the characteristics of small size, low power consumption, and no radiation. It has developed rapidly in recent years, especially in large-scale display devices such as TVs. market. But at present, TFT-LCD is mainly used for display, and its function is relatively single.

It should be noted that the information disclosed in the above Background section is only for enhancing understanding of the background of the application, and therefore may include information that does not form the prior art known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a pixel electrode, a liquid crystal display device and a method of using the same, which can enable the liquid crystal display device not only to have a display function, but also to have a tablet function.

A first aspect of the present application provides a pixel electrode, the pixel electrode has a plurality of slit patterns arranged in a first direction; the slit pattern has a main pattern area and a first edge pattern area;

the main pattern area includes a first main plane and a second main plane spaced in a first direction and parallel to each other;

The first edge pattern area includes a first edge plane and a second edge plane; one end of the first edge plane is connected to the first main plane, and one end of the second edge plane is connected to the second main plane connection, the other end of the first edge plane is connected with the other end of the second edge plane; there is a first included angle between the first edge plane and the first main plane; the second edge plane There is a second included angle with the second main plane; wherein:

Both the first included angle and the second included angle are greater than 90° and less than 180°; 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°.

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 and the first direction are non-perpendicular.

In an exemplary embodiment of the present application, the first edge pattern area further includes a first connection plane, and two ends of the first connection plane are respectively connected with the other end of the first edge plane and the first connection plane. The other ends of the two edge planes are connected, and the first connecting plane extends in the first direction.

In an exemplary embodiment of the present application, a middle part of the main pattern area has a middle connecting bar, and the middle connecting bar has a first middle connecting surface and a second middle connecting surface arranged at intervals in the second direction The two ends of the first middle connecting surface and the second middle connecting surface are respectively connected with the first main plane and the second main plane; wherein:

Both the first middle connecting surface and the second middle connecting surface are planes extending in the first direction.

In an exemplary embodiment of the present application, the slit pattern further includes a second edge pattern area, and the second edge pattern area is located at an end of the main pattern area away from the first edge pattern area; wherein :

The second edge pattern area includes a third edge plane, a fourth edge plane and a second connection plane, one end of the third edge plane is connected to the first main plane, and one end of the fourth edge plane is connected to the first main plane. The second main plane is connected, and the other end of the fourth edge plane and the other end of the second edge plane are respectively connected to both ends of the second connecting plane.

A second aspect of the present application provides a pixel electrode, the pixel electrode has a plurality of slit patterns arranged in a first direction; at least one end of two ends of the slit pattern is in an opening shape.

In an exemplary embodiment of the present application, one end of the two ends of each of the slit patterns is closed, and the other end is open; wherein:

The open ends of each of the slit patterns are located on the same side; or

The opening-shaped ends between the adjacent slit patterns are alternately arranged.

In an exemplary embodiment of the present application, both ends of the slit pattern are open-shaped;

A middle portion of the slit pattern has a middle connecting bar to divide the slit pattern into a first slit portion and a second slit portion, the middle connecting bar extending in a first direction, wherein:

The extending directions of the first slit portion and the second slit portion are the same; or

The extending directions of the first slit portion and the second slit portion are different, and the first slit portion and the second slit portion are about the center line of the middle connecting bar in the first direction Set up symmetrically.

A third aspect of the present application provides a liquid crystal display device, which is characterized by comprising: an array substrate and a color filter substrate arranged in cell alignment, and liquid crystal molecules filled between the array substrate and the color filter substrate;

The array substrate includes a base substrate and a first electrode, an insulating layer and a second electrode formed in sequence, and the 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 described in 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 liquid crystal display device described above, and the method for using the liquid crystal display device includes:

controlling the display surface of the liquid crystal display device to realize the first grayscale display;

applying pressure to the display surface of the liquid crystal display device to form pressing marks on the display surface of the liquid crystal display device;

controlling the display surface of the liquid crystal display device to realize second grayscale display, so as to eliminate the pressing trace;

Wherein, the grayscale voltage displayed by the first grayscale is greater than the grayscale voltage displayed by the second grayscale.

The technical solution provided by this application can achieve the following beneficial effects:

In the pixel electrode, the liquid crystal display device and the method of using the same provided by the present application, one end of the slit pattern in the pixel electrode is designed as a first edge pattern area or an opening shape, under the display of a specific screen, the liquid crystal can be made here. The deflection direction of the molecules is opposite to the deflection direction of the liquid crystal in the main pattern area in the slit pattern, and the deflection angle of the liquid crystal molecules here can reach more than 15°, so that when pressure is applied to the display surface, that is, when the display is pressed. When the surface is pressed, it can make the pressing place appear partially dark, so as to form pressing marks, that is, the writing board function of the liquid crystal display device is realized. to be observed by the human eye.

In addition, in the present application, if you want to restore the display function of the liquid crystal display device, you only need to control the display surface of the liquid crystal display device to achieve low grayscale such as L0 screen display, that is: reduce the voltage grayscale to eliminate pressing traces; After the trace, input the normal liquid crystal display signal to realize the 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 limiting of the present application.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 shows a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application;

FIG. 2 shows a schematic plan view of the pixel electrode according to the first embodiment of the present application;

FIG. 3 is a schematic diagram showing the deflection angle of liquid crystal molecules in each area when the pixel electrode described in the first embodiment of the present application is used;

FIG. 4 shows a schematic plan view of the pixel electrode according to the second embodiment of the present application;

FIG. 5 shows a schematic plan view of the pixel electrode according to Embodiment 3 of the present application;

6 and 7 respectively show schematic plan views of the pixel electrodes described in Example 4 of the present application under different implementations;

FIG. 8 shows a schematic plan view of the pixel electrode according to the fifth embodiment of the present application;

FIG. 9 shows a schematic plan view of the pixel electrode according to the sixth embodiment of the present application;

FIG. 10 and FIG. 11 respectively show schematic plan views of the pixel electrode described in Example 7 of the present application under different implementations;

FIG. 12 shows a schematic plan view of the pixel electrode according to the eighth embodiment of the present application;

FIG. 13 shows a flowchart of a method for using a liquid crystal display device according to an embodiment of the present application;

FIG. 14 is a schematic diagram showing the deflection angles of liquid crystal molecules under different voltages when the pixel electrodes described in Embodiments 2 to 8 of the present application are used.

Reference number:

10, color filter substrate; 101, substrate; 102, color filter layer; 11, array substrate; 111, base substrate; 112, common electrode; 113, insulating layer; 114, pixel electrode; 12, liquid crystal molecules.

1140, first main plane; 1141, second main plane; 1142, first edge plane; 1143, second edge plane; 1144, first connection plane; 1145, third edge plane; 1146, fourth edge plane; 1147 1148, the first middle connecting surface; 1148b, the first middle plane; 1148a; the second middle plane; 1149, the second middle connecting surface; 1150, the first slit part; 1151, the second slit department.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application 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 descriptions will be omitted.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, such as according to the direction of the example described. It will be appreciated that if the device of the icon is turned upside down, the components described as "on" will become the components on "bottom". When a certain structure is "on" other structures, it may mean that a certain structure is integrally formed on other structures, or that a certain structure is "directly" arranged on other structures, or that a certain structure is "indirectly" arranged on another structure through another structure. other structures.

The terms "a", "an", "the", "said" are used to indicate the presence of one or more elements/components/etc; the terms "including" and "having" are used to indicate open-ended inclusive means and means that additional elements/components/etc may be present in addition to the listed elements/components/etc; the terms "first", "second", etc. are used only as labels, not as numbers to their objects limit.

At present, TFT-LCD can be divided into: Twisted Nematic (TN) type, In Plane Switch (IPS) type and Advanced Super Dimension Switch (Advanced Super DimensionSwitch) according to the display mode: ADS) type; among them, the ADS mode liquid crystal display device should have the advantages of wide viewing angle, high aperture ratio, high transmittance, high resolution, fast response speed, low power consumption, low chromatic aberration, etc. One of the important technologies in the field.

Based on this, the liquid crystal display device of the present application can be selected as an ADS mode. In detail, the liquid crystal display device may include an array substrate 11 and a color filter substrate 10 arranged in cell alignment, and liquid crystal molecules 12 filled between the array substrate 11 and the color filter substrate 10 .

The color filter substrate 10 may include a substrate 101 and a color filter layer 102 formed on the substrate 101, and the color filter layer 102 is used to realize color display. The array substrate 11 may include a base substrate 111 and a first electrode, an insulating layer 113 and a second electrode formed in sequence. For example, the base substrate 111 can include a plurality of TFTs arranged in an array; the first electrode can be a common electrode 112, and the common electrode 112 can be a whole surface, that is, a plate-shaped electrode; used for providing a common voltage signal; The second electrode can be the pixel electrode 114, and the pixel electrode 114 can have a slit pattern, that is, the slit electrode is used to provide 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 to this, the first electrode may also be the pixel electrode 114 , and the second electrode may be the common electrode 112 . It should be noted that the first electrode and the second electrode can be made of indium tin oxide (commonly known as ITO).

In this application, in order to make the liquid crystal display device have multiple functions, that is, in addition to the display function, the liquid crystal display device can also have a writing board function, so as to be used in conference room presentations; therefore, the pixel electrodes 114 in the array substrate 11 are processed Improve.

The structure of the pixel electrode 114 in different embodiments will be described in detail below with reference to the accompanying drawings.

Example 1

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 area and a first edge pattern area and a second edge pattern area located at both ends of the main pattern area It should be noted that this slit pattern is the area where the hatching line is not filled in the figure, this main pattern area is the area between the dotted line A and the dotted line B in the slit pattern in the figure, and the first edge pattern area is in the figure. The area on the right side of the dashed line B in the slit pattern, and the second edge pattern area is the area on the left side of the dashed line A in the slit pattern in the figure; specifically:

The main pattern area may include a first main plane 1140 and a second main plane 1141 spaced apart and parallel to each other in the first direction X; the first main plane 1140 and the second main plane 1141 extend in the second direction Y, the second main plane 1140 The direction Y and the first direction X are non-perpendicular, so that the design can speed up the response time. But not limited to this, the second direction Y may also be perpendicular to the first direction X. In this embodiment, the distance between the first main plane 1140 and the second main plane 1141 in the direction perpendicular to the second direction Y may be 7.8 μm, and the distance between the main pattern regions of adjacent slit patterns is perpendicular to the second direction Y The distance in the direction may be 2.9 μm, but is not limited thereto.

The first edge pattern area may include a first edge plane 1142, a second edge plane 1143 and a first connection plane 1144; one end of the first edge plane 1142 is connected to the first main plane 1140, and one end of the second edge plane 1143 is connected to the second The main plane 1141 is connected, the other end of the second edge plane 1143 and the other end of the first edge plane 1142 are respectively connected with both ends of the first connection plane 1144; the first connection plane 1144 extends in the first direction X; and the first There is a first included angle α between the edge plane 1142 and the first main plane 1140; there is a second included angle β between the second edge plane 1143 and the second main plane 1141;

The second edge pattern area 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, and one end of the fourth edge plane 1146 is connected to the second main plane 1140. The plane 1141 is connected, and the other end of the fourth edge plane 1146 and the other end of the third edge plane 1145 are respectively connected with both ends of the second connection plane 1147; the second connection plane 1147 extends in the first direction X, and the third edge There is a third included angle γ between the plane 1145 and the first main plane 1140 , and a fourth included angle θ between the fourth edge plane 1146 and the second main plane 1141 .

Based on the above, it can be seen that both ends of the slit pattern in this embodiment are closed.

Wherein, the first angle α and the fourth angle θ are both greater than 90° and less than 180°; that is, the angle between the first edge plane 1142 and the first connection plane 1144 , the fourth edge plane 1146 and the third The angle between the two connection planes 1147 can be greater than 90° and less than 180°. The purpose of this design is to enable the liquid crystal molecules to have an angular transition in the edge region of the slit pattern, and the electric field is close to the first edge plane 1142. And the direction near the fourth edge plane 1146 is basically the same as that of the main pattern area, that is, the deflection angle of the liquid crystal molecules is basically the same as the deflection direction of the main pattern area 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°, that is to say, the angle between the second edge plane 1143 and the first connection plane 1144 and the angle between the third edge plane 1145 and the second connection plane 1147 The included angle can be less than 90°, the purpose of this design is to make the electric field basically opposite to the direction of the main pattern area near the second edge plane 1143 and near the third edge plane 1145, that is, the deflection angle of the liquid crystal molecules is close to the first The deflection direction of the main pattern area at the second edge plane 1143 and near the third edge plane 1145 is substantially opposite.

For example, the first edge pattern area and the second edge pattern area may be center-symmetrical about the center of the main pattern area, but not limited thereto.

Based on the above, it can be seen that by designing the shape of the edge pattern area, the azimuth angle of the liquid crystal molecules in the edge pattern area relative to the liquid crystal molecules in the main pattern area changes abruptly, that is, the azimuth angle is arranged in the opposite direction, and this discontinuous arrangement The cloth is made to expand to the main pattern area under the high grayscale display screen (for example: grayscale L255 screen) and when pressure is applied to the display surface of the liquid crystal display device (ie: pressing the display surface of the liquid crystal display device), so that pressing Partial darkness occurs in the place to form pressing traces, that is, the writing board function of the liquid crystal display device is realized. It should be noted that after pressing, the pressed place and the electric field form a stable arrangement, which cannot be recovered for a long time, so that it can be observed by the human eye.

In addition, in this embodiment, if you want to restore the display function of the liquid crystal display device, you only need to control the display surface of the liquid crystal display device to display a low grayscale such as an L0 screen, that is, reduce the voltage grayscale to eliminate pressing marks; After pressing the trace, input the normal liquid crystal display signal to realize the normal display function.

However, it should be noted that this design does not guarantee that each liquid crystal display device will have pressing marks, as shown in Table 1:

In Table 1, three samples of the liquid crystal display device with the pixel electrodes 114 of the present embodiment are listed. It should be noted that not only the structures of the pixel electrodes 114 in the three experimental samples of the liquid crystal display device are completely the same, but all of them are as shown in FIG. 2 . and other structures are also identical. However, through actual comparison, it is found that not all of the three liquid crystal display device samples will have pressing marks; only in the edge pattern area, the deflection direction opposite to that of the main pattern area and the deflection angle (ie: reverse deflection angle) is greater than When the liquid crystal molecules are 15°, pressing marks are produced; while the samples with reverse deflection angles of 8.7° and 10.3° do not produce pressing marks. In addition, it should be understood that the transmittance in this embodiment may be defined as 100%, which is used as a reference for transmittance in subsequent embodiments.

Specifically, as shown in Figure 3, the ordinate in Figure 3 represents the deflection angle of the liquid crystal molecules; the left side of the solid line C in Figure 3 represents the deflection angle of the liquid crystal molecules in the main pattern area, approximately in the range of 45° to 70°; The solid line C and the solid line D in 3 represent the deflection angles of the liquid crystal molecules in the edge pattern area (ie: the first edge pattern area and the second edge pattern area). It can be seen from FIG. 3 that the liquid crystal molecules in the edge pattern area The deflection angle fluctuates greatly, this is the electric field disorder area, and the deflection angle of the liquid crystal molecules cannot be guaranteed to be below minus 15°; the right side of the solid line D in Figure 3 is the area without slits in the pixel electrode, no electric field, the liquid crystal The molecules are not deflected.

That is to say, if the pixel electrode 114 in the liquid crystal display device is used as the pixel electrode 114 shown in FIG. 2 in this embodiment, whether the liquid crystal display device can have the tablet function is a certain accident. Therefore, it is not recommended to use this The embodiment is the pixel electrode 114 shown in FIG. 2 .

Embodiment 2

In this embodiment, as shown in FIG. 4 , the main pattern area of the slit pattern in the pixel electrode 114 can be the same as the main pattern area in Embodiment 1, and details are not repeated here; and the first edge pattern of the slit pattern The area can be different from the first edge pattern area in the first embodiment, and the main differences are:

The extension directions of the second edge planes 1143 are different. Specifically, as shown in FIG. 4 , in this embodiment, the second 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 region extend toward each other; in this case, the second edge plane 1143 and the first edge plane 1142 are far away from the main pattern region One end can be directly connected; it can also be connected through the first connecting plane 1144 , that is, one end of the second edge plane 1143 and the first edge plane 1142 away from the main pattern area can be connected to two ends of the first connecting plane 1144 respectively.

It should be noted that, the first connection plane 1144 in this embodiment may also extend in the first direction X, but is not limited to this, depending on the specific situation.

Wherein, when the first connection plane 1144 extends in the first direction X, the included angle between the second edge plane 1143 and the first connection plane 1144 may be greater than 90° and less than 180°. This design is compared with the first embodiment. , not only can the electric field be substantially opposite to the direction of the main pattern area near the second edge plane 1143, that is, the deflection angle of the liquid crystal molecules is basically opposite to the deflection direction of the main pattern area near the second edge plane 1143; The reverse deflection angle of the liquid crystal molecules near the second edge plane 1143 reaches more than 15°, so as to ensure that pressure is applied to the display surface of the liquid crystal display device (ie: pressing the display surface), a pressing trace can be formed, that is, to ensure that the liquid crystal display device can have the function of a writing board.

Specifically referring to Table 1 below, in this embodiment, as shown in FIG. 4 , in the pixel electrode 114 shown in FIG. 4 , there are liquid crystal molecules with a reverse deflection angle of 35° near the second edge plane 1143 , and the transmittance can reach 97.90. %.

Optionally, the second edge pattern area of the slit pattern in this embodiment may be the same as the second edge pattern area in the first embodiment. But not limited to this, the second edge pattern area of the slit pattern in this embodiment can also be different from the second edge pattern area in the first embodiment; the main differences are:

The extension directions of the third edge planes 1145 are different, which are not shown in the figures. Specifically, in this embodiment, the third 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 ends of the third edge plane 1145 and the fourth edge plane 1146 away from the main pattern area extend toward each other; in this case, the third edge plane 1145 and the fourth edge plane 1146 are away from the main pattern area One end can be directly connected; it can also be connected through the second connecting plane 1147 , that is, one end of the third edge plane 1145 and the fourth edge plane 1146 away from the main pattern area can be connected to two ends of the second connecting plane 1147 respectively. For the purpose of such a design, reference may be made to the purpose of the design of the first edge pattern region in this embodiment, which will not be repeated here. Because of this design, liquid crystal molecules with a reverse deflection angle of more than 15° can exist in both the first edge pattern area and the second edge pattern area. Therefore, the occurrence of pressing marks can be increased to enhance the writing board function of the liquid crystal display device.

Further, in this embodiment, the second edge pattern area and the first edge pattern area may be center-symmetrical with respect to the center of the main pattern area.

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 can be the same as the first edge pattern in the first embodiment. The extending direction of the first edge plane 1142 in the region and the extending direction of the fourth edge plane 1146 in the second edge pattern region are the same.

Embodiment 3

In this embodiment, as shown in FIG. 5 , the main pattern area of the slit pattern in the pixel electrode 114 may be the same as the main pattern area in the second embodiment, and details are not repeated here; and the first edge pattern of the slit pattern The area can be different from the first edge pattern area in the second embodiment, and the main differences are:

The extension directions of the first edge planes 1142 are different. Specifically, as shown in FIG. 5 , in this embodiment, the first 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 to say, one end of the first edge plane 1142 away from the main pattern area extends to the side away from where the second main plane 1141 is located; in this case, the ends of the first edge plane 1142 and the second edge plane 1143 away from the main pattern area may be It can also be connected directly through the first connecting plane 1144 , that is, one end of the first edge plane 1142 and the second edge plane 1143 away from the main pattern area can be connected to two ends of the first connecting plane 1144 respectively.

In this embodiment, this design can not only ensure that there are liquid crystal molecules with a reverse deflection angle (that is, an angle opposite to the liquid crystal deflection angle of the main pattern area) of more than 15° in the first edge pattern area, to ensure that in a specific display screen ( For example: under the grayscale L255 screen), when pressure is applied to the display surface of the liquid crystal display device (ie: pressing the display surface of the liquid crystal display device), a pressing trace can be formed, that is, to ensure that the liquid crystal display device can have a writing board function And compared with the second embodiment, the transmittance can also be improved.

Specifically referring to Table 1 below, it can be seen that in the pixel electrode 114 shown in FIG. 5 in this embodiment, there are liquid crystal molecules whose reverse deflection angle can reach 30° in the first edge pattern region, and the transmittance can reach 98.57% at this time. .

In addition, the second edge pattern area of the slit pattern in this embodiment can be the same as the second edge pattern area in the first embodiment or the second embodiment. But not limited to this, the second edge pattern area of the slit pattern in this embodiment can also be different from the second edge pattern area in Embodiment 1 and Embodiment 2; the main differences are:

The extension directions of the fourth edge planes 1146 are different, which are not shown in the figures. Specifically, in this embodiment, the fourth angle θ formed between the fourth edge plane 1146 and the second main plane 1141 may be greater than 180° and less than 270°. That is to say, one end of the fourth edge plane 1146 away from the main pattern area extends away from the side where the first main plane 1140 is located; in this case, the ends of the fourth edge plane 1146 and the third edge plane 1145 away from the main pattern area may be Directly connected; can also be connected through the second connecting plane 1147 , that is, one end of the fourth edge plane 1146 and the third edge plane 1145 away from the main pattern area can be connected to two ends of the second connecting plane 1147 respectively.

Further, the second edge pattern area and the first edge pattern area may be center-symmetrical with respect to the center of the main pattern area.

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 can be the same as the first edge pattern in the second embodiment. The extending direction of the second edge plane 1143 in the region and the extending direction of the third edge plane 1145 in the second edge pattern region are the same.

Embodiment 4

In this embodiment, the first edge pattern area of the slit pattern in the pixel electrode 114 may be the same as the first edge pattern area in the third embodiment, and the second edge pattern area may be the same as the second edge pattern area in the first embodiment The same, as shown in FIG. 6; but not limited to this, the first edge pattern area in this embodiment can also be the same as the first edge pattern area in Embodiment 2; the second edge pattern area in this embodiment can also be The second edge pattern area in Example 2 or Example 3 is the same, and details are not repeated here. The main pattern area of the slit pattern may be different from the main pattern area in Embodiment 1, Embodiment 2 or Embodiment 3. The main differences are:

In this embodiment, the middle part of the main pattern area has a middle connection bar, while the middle part of the main pattern area in the first embodiment, the second embodiment and the third embodiment does not have the middle connection bar. Specifically, in this embodiment, the middle connecting bar has a first middle connecting surface 1148 and a second middle connecting surface 1149 that are spaced apart in the second direction Y, and the first middle connecting surface 1148 and the second middle connecting surface 1149 are The two ends are respectively connected with the first main plane 1140 and the second main plane 1141; for example, the first middle connecting surface 1148 can be the surface far from the first edge pattern area in the middle connecting bar, and the second middle connecting surface 1149 can be It is the face of the middle connecting strip that is close to the first edge pattern area. This design enables liquid crystal molecules with a reverse deflection angle of more than 15° to exist at the corner formed by the first middle connecting surface 1148 and the second main plane 1141 in the middle connecting strip, that is, increasing the reverse deflection angle of the liquid crystal molecules The area reaching 15° or more, that is to say, in this embodiment, there are at least two areas where liquid crystal molecules with a reverse deflection angle of more than 15° can exist. WordPad function.

Optionally, the first middle connecting surface 1148 and the second middle connecting surface 1149 may be planes extending in the first direction X, as shown in FIG. 6 . But not limited to this, the first middle connecting surface 1148 can also be a bending surface composed of multiple planes; specifically, as shown in FIG. 7 , the first middle connecting surface 1148 at least has a first middle plane 1148b and a second middle plane 1148b. The middle plane 1148a and the first middle plane 1148b are connected with the second main plane 1141 through the second middle plane 1148a, wherein: the first middle plane 1148b can be a plane extending in the first direction X; the second middle plane 1148a and the first The included angle between the middle planes 1148b is greater than 90° and less than 180°; the included angle between the second middle plane 1148a and the second main plane 1141 is greater than 90° and less than 180°, so the design can increase the first middle connecting surface 1148 and the second main plane 1141 form the reverse deflection angle of the liquid crystal molecules to increase the degree of occurrence of pressing marks.

Specifically referring to Table 1 below, it can be seen that in the pixel electrode 114 shown in FIG. 6 in this embodiment, there are liquid crystal molecules whose reverse deflection angle can reach 30° in two areas, one area is the first edge pattern area, and the other area is the first edge pattern area. It is the corner formed by the first middle connecting surface 1148 and the second main plane 1141 . And the transmittance can reach 89.44% at this time.

Embodiment 5

In this embodiment, as shown in FIG. 8 , the slit pattern in the pixel electrode 114 is different from the slit pattern in Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4. The main differences are:

In Example 1, Example 2, Example 3 and Example 4, both ends of the slit pattern are closed, but in this example, one end of the two ends of the slit pattern is closed, and the other end is open; As shown in FIG. 8 , the opening-shaped ends of each slit pattern in the pixel electrode 114 are located on the same side.

Specifically, in this embodiment, each slit pattern may include a main pattern area (the right side of the dashed line A shown in FIG. 8 ) and a second edge pattern area (the left side of the dashed line A shown in FIG. 8 ). The two edge pattern areas are located on one side of the main pattern area, and the side of the main pattern area away from the second edge pattern area is open. This design can ensure the reverse deflection angle of the liquid crystal molecules at the open end of the slit pattern. It can reach more than 15° to ensure that under high gray scale such as L255 display screen, when pressure is applied to the display surface of the liquid crystal display device (ie: pressing the display surface of the liquid crystal display device), pressing traces can be formed, that is: to ensure This liquid crystal display device can have a tablet function.

It should be noted that the design scheme of the main pattern area and the second edge pattern area in this embodiment may refer to the design scheme of the main pattern area and the second edge pattern area in the first embodiment; that is, in the first embodiment, the pixel On the basis of the electrode 114, the slit pattern shown in FIG. 8 in this embodiment can be obtained by removing the first edge pattern area in the slit pattern. But not limited to this, for the design scheme of the second edge pattern area in this embodiment, reference may also be made to the “second edge pattern area and the first edge pattern area may be related to the difference between the main pattern area” mentioned in the second or third embodiment. The center is centrosymmetric" in the design of the second edge pattern.

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 details are not repeated here.

Specifically referring to Table 2 below, it can be seen that, in the pixel electrode 114 shown in FIG. 8 in this embodiment, there are liquid crystal molecules with a reverse deflection angle of 35° at the opening end of the slit pattern, and the transmittance at this time is up to 104.89%.

Embodiment 6

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. The main differences are:

In the fifth embodiment, the open ends of each slit pattern are located on the same side; while in this embodiment, the open ends of adjacent slit patterns are staggered.

Specifically, in this embodiment, each slit pattern may include a main pattern area, and one of the adjacent slit patterns includes a second edge pattern area (as shown on the left side of the dotted line A in FIG. 9 ), and the other The first edge pattern area (as shown on the right side of the dotted line B in FIG. 9 ), it should be understood that the first edge pattern area and the second edge pattern area are used to block different sides of the main pattern area, so that the The opening-shaped ends between adjacent slit patterns are alternately arranged. This design can ensure that the reverse deflection angle of the liquid crystal molecules at the open end of the slit pattern can reach more than 15°, so as to ensure that pressure is applied to the display surface of the liquid crystal display device under high gray scale such as L255 display screen. (ie: pressing the display surface of the liquid crystal display device), a pressing trace can be formed, that is, to ensure that the liquid crystal display device can have the function of a writing pad.

It should be noted that, for the design scheme of the main pattern area, the first edge pattern area, and the second edge pattern area in this embodiment, reference may be made to the design of the main pattern area, the first edge pattern area, and the second edge pattern area in Embodiment 1. That is to say, on the basis of the pixel electrode 114 described in the first embodiment, the first edge pattern area of one of the adjacent slit patterns can be removed, and the second edge pattern area of the other one can be removed. It is the pixel electrode 114 in this embodiment. But not limited to this, the design scheme of the first edge pattern area in this embodiment can also refer to the first edge pattern area mentioned in Embodiment 2 or Embodiment 3, and the design scheme of the second edge pattern area in this embodiment is also Reference may be made to the design solution of the second edge pattern in "the second edge pattern area and the first edge pattern area may be centrally symmetric with respect to the center of the main pattern area" mentioned in the second or 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 details are not repeated here.

Specifically referring to Table 2 below, it can be seen that in the pixel electrode 114 shown in FIG. 9 in this embodiment, there are liquid crystal molecules with a reverse deflection angle of 32° at one end of the slit pattern that is open, and the transmittance at this time is up to 105.48%.

Embodiment 7

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. The main differences are:

In the fourth embodiment, both ends of the main pattern area in each slit pattern respectively have a first edge pattern area and a second edge pattern area, that is, both ends of the slit pattern are closed; Both ends are open.

Specifically, as shown in FIG. 10 , for the design scheme of the slit pattern in this embodiment, reference may be made to the design scheme of the main pattern area of the slit pattern in the fourth embodiment. Wherein, in this embodiment, a middle connecting bar is arranged in the middle of the slit pattern, and the middle connecting bar can extend in the first direction X, that is, the middle connecting bar can include a first middle connecting surface 1148 and a second middle connecting surface 1149, and the first middle connecting surface 1148 and the second middle connecting surface 1149 are planes extending in the first direction X; but not limited to this, the middle connecting bar can also be in other forms; the slit pattern can be divided into first The slit portion 1150 and the second slit portion 1151. The extending directions of the first slit portion 1150 and the second slit portion 1151 are the same. And both the first slit portion 1150 and the second slit portion 1151 have open ends (ie, open ends), so that the opening ends of the first slit portion 1150 and the second slit portion 1151 are The reverse deflection angle of the liquid crystal molecules can reach more than 15°, that is to say, in this embodiment, at least two regions can have liquid crystal molecules with a reverse deflection angle of more than 15°. Therefore, the occurrence degree of pressing marks can be increased. , to enhance the tablet function of the liquid crystal display device.

Specifically referring to Table 1 below, it can be seen that in the pixel electrode 114 shown in FIG. 10 in this embodiment, there are two regions where liquid crystal molecules with a reverse deflection angle of 30° exist, and one region is the opening end of the first slit portion 1150 The other area is at the open end of the second slit portion 1151 . And the transmittance can reach 99.0% at this time.

It should be noted that, in this embodiment, if both ends of the slit pattern are set to be open, and the extending directions of the first slit portion 1150 and the second slit portion 1151 in each slit pattern are the same, such as As shown in FIG. 11 , it is usually necessary to set two groups of slit groups in the pixel electrode 114 arranged in the first direction X, which can be respectively defined as the first slit group M and the second slit group N, the first slit group Both M and the second slit group N include a plurality of slit patterns arranged in the first direction X, wherein each slit pattern in the first slit group M extends in the same direction, and the second slit group M has the same extending direction. The extending direction of each slit pattern in N is the same, and the extending direction of the slit pattern in the first slit group M is different from the extending direction in the second slit group N, and is about the direction perpendicular to the first direction X Set up symmetrically. However, such a design will cause a dark area to appear between the first slit group M and the second slit group N.

Embodiment 8

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. The main differences are:

In the seventh embodiment, the extending directions of the first slit portion 1150 and the second slit portion 1151 are the same; while the extending directions of the first slit portion 1150 and the second slit portion 1151 in the slit pattern in this embodiment are different.

Optionally, as shown in FIG. 12 , in this embodiment, the first slit portion 1150 and the second slit portion 1151 are in the first direction X with respect to the middle connecting bar (for this middle connecting bar, please refer to the description in the seventh embodiment) The center line on the upper part is symmetrically arranged, so that the design not only enables the reverse deflection angles of the liquid crystal molecules at the opening ends of the first slit part 1150 and the second slit part 1151 to reach 15° or more, that is to say, this embodiment There are at least two regions in which liquid crystal molecules with a reverse deflection angle of more than 15° can exist. Therefore, the occurrence degree of pressing marks can be increased to enhance the tablet function of the liquid crystal display device; In the scheme of setting the first slit group and the second slit group, since it is not necessary to set two slit groups with different extension directions in the first direction X, it is possible to avoid the space between the two groups of slit groups with different extension directions. A situation where dark areas are created.

Specifically referring to Table 1 below, it can be seen that in the pixel electrode 114 shown in FIG. 12 in this embodiment, there are two regions where liquid crystal molecules with a reverse deflection angle of 38° exist, and one region is the opening end of the first slit portion 1150 The other area is at the open end of the second slit portion 1151 . And the transmittance can reach 99.3% at this time.

It should be understood that, the first slit portion 1150 and the second slit portion 1151 may also be asymmetrically arranged, depending on the specific situation.

Wherein, the table 1 mentioned in any of the foregoing embodiments is as follows:

Table 1

It should be noted that, in order to ensure that the liquid crystal display device has a display function as well as a tablet function in the present application, the design of the pixel electrode 114 in the liquid crystal display device of this embodiment preferably adopts the design of the second embodiment to the eighth embodiment. Design. 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 embodiment to the eighth embodiment, and other design schemes can also be adopted, as long as it can ensure that the liquid crystal display device has the display function at the same time , and also has a writing pad function.

In addition, it should be noted that the shapes of the pixel electrodes shown in FIGS. 2 and 4 to 12 can be understood as the orthographic projection of the pixel electrodes 114 on the base substrate 111 .

An embodiment of the present application also provides a method for using a liquid crystal display device. As shown in FIG. 1 , the liquid crystal display device may include: an array substrate 11 and a color filter substrate 10 arranged in a cell-to-cell arrangement, and a liquid crystal display device filled with the array substrate 11 and the color filter substrate 10 . Liquid crystal molecules between the color filter substrates 10; the array substrate 11 may include a base substrate 111 and a first electrode, an insulating layer 113 and a second electrode formed in sequence, and the electric field formed between the first electrode and the second electrode can be controlled Deflection of 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 foregoing Embodiments 2 to 8.

Specifically, as shown in FIG. 13 , the using method of the liquid crystal display device may include step S1, step S2 and step S3, wherein:

In step S1, the display surface of the liquid crystal display device is controlled to display the first gray scale, and the first gray scale display is high gray scale display, such as L255 display, but not limited to this, depending on the specific situation. For example, the display surface of the liquid crystal display device can be adjusted by the circuit to realize a specific picture display, that is, the function of turning on the writing pad.

In step S2, pressure is applied to the display surface of the liquid crystal display device to form pressing marks on the display surface of the liquid crystal display device. For example, the writing surface can be pressed by a finger or a writing pen to apply pressure to the display surface of the liquid crystal display device, so that pressing marks are 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 the second grayscale display, so as to eliminate the pressing marks. For example, the display surface of the liquid crystal display device can be adjusted to achieve a second grayscale display, such as: L0 display, but not limited to this, depending on the specific situation; to turn off the tablet function to eliminate pressing traces; It should be noted that this circuit may be the internal structure of the liquid crystal display device.

Wherein, after the pressing trace is eliminated, a normal liquid crystal display signal can be input through circuit adjustment, so that the liquid crystal display device can be used as a normal display.

It should be noted that the grayscale voltage displayed by the first grayscale is greater than the grayscale voltage displayed by the second grayscale. Specifically, as can be seen from FIG. 14 , the abscissa represents the voltage, and the ordinate represents the deflection angle of the liquid crystal molecules. By comparing the states of liquid crystal molecules at different voltages, it is found that at high voltage, that is, when the voltage is greater than 6.2V (the right side of the solid line E in the figure), the display surface can display the first grayscale display mentioned above. , and there are liquid crystal molecules with a reverse deflection angle greater than 15°, so that pressing marks may be produced when the display surface of the liquid crystal display device is actually pressed. When the gray scale is low, that is, when the voltage is between 0 and 6.2V (the left side of the solid line E in the figure), the display surface can display the second gray scale mentioned above; and there may be no reverse deflection. liquid crystal molecules, or there are liquid crystal molecules that undergo reverse deflection, but the reverse deflection angle is small, specifically less than 15°, so that there is no pressing trace when the display surface of the liquid crystal display device is actually pressed.

To sum up, in order to eliminate the pressing marks, it can actually be realized by lowering the voltage of the liquid crystal display device (ie, 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 liquid crystal display device commonly used in the art can be used, such as liquid crystal displays, mobile phones, computers, televisions, etc., and those skilled in the art Corresponding selection can be made according to the specific application of the liquid crystal display device, which is not repeated here.

And the liquid crystal display device in this embodiment not only includes the components described in the previous embodiments, but also includes other necessary components and components, taking the liquid crystal display as an example, such as a casing, a circuit board, a power cord, etc., which are well known in the art. Comprehension can be supplemented accordingly according to the specific usage requirements of the display device, which will not be repeated here.

Other embodiments of the present application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of this application that follow the general principles of this application and include common knowledge or conventional techniques in the technical field not disclosed in this application . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the application being indicated by the appended claims.

Claims (10)

1. A pixel electrode, characterized in that the pixel electrode has a plurality of slit patterns arranged in a first direction; the slit pattern has a main pattern area and a first edge pattern area; the main pattern area includes a first main plane and a second main plane spaced in a first direction and parallel to each other; The first edge pattern area includes a first edge plane and a second edge plane; one end of the first edge plane is connected to the first main plane, and one end of the second edge plane is connected to the second main plane connection, the other end of the first edge plane is connected with the other end of the second edge plane; there is a first included angle between the first edge plane and the first main plane; the second edge plane There is a second included angle with the second main plane; wherein: Both the first included angle and the second included angle are greater than 90° and less than 180°; 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°. 2 . The pixel electrode according to claim 1 , wherein the first main plane and the second main plane extend in a second direction, and the second direction and the first direction are in an angle. 3 . non-vertical. 3. The pixel electrode according to claim 2, wherein, The first edge pattern area further includes a first connecting plane, two ends of the first connecting plane are respectively connected with the other end of the first edge plane and the other end of the second edge plane, the first The connection plane extends in the first direction. 4 . The pixel electrode according to claim 3 , wherein a middle part of the main pattern area has a middle connecting bar, and the middle connecting bar has a first middle connecting surface and The second middle connecting surface, the two ends of the first middle connecting surface and the second middle connecting surface are respectively connected with the first main plane and the second main plane; wherein: Both the first middle connecting surface and the second middle connecting surface are planes extending in the first direction. 5. The pixel electrode according to claim 1, wherein, The slit pattern further includes a second edge pattern area, the second edge pattern area is located at one end of the main pattern area away from the first edge pattern area; wherein: The second edge pattern area includes a third edge plane, a fourth edge plane and a second connection plane, one end of the third edge plane is connected to the first main plane, and one end of the fourth edge plane is connected to the first main plane. The second main plane is connected, and the other end of the fourth edge plane and the other end of the second edge plane are respectively connected to both ends of the second connecting plane. 6. A pixel electrode, characterized in that the pixel electrode has a plurality of slit patterns arranged in a first direction; at least one end of the two ends of the slit pattern is in an opening shape. 7. The pixel electrode according to claim 6, wherein one end of the two ends of each slit pattern is closed, and the other end is open; wherein: The open ends of each of the slit patterns are located on the same side; or The opening-shaped ends between the adjacent slit patterns are alternately arranged. 8. The pixel electrode according to claim 6, wherein, Both ends of the slit pattern are open-shaped; A middle portion of the slit pattern has a middle connecting bar to divide the slit pattern into a first slit portion and a second slit portion, the middle connecting bar extending in a first direction, wherein: The extending directions of the first slit portion and the second slit portion are the same; or The extending directions of the first slit portion and the second slit portion are different, and the first slit portion and the second slit portion are about the center line of the middle connecting bar in the first direction Set up symmetrically. 9. A liquid crystal display device, comprising: an array substrate and a color filter substrate arranged in a cell-to-cell manner, and liquid crystal molecules filled between the array substrate and the color filter substrate; The array substrate includes a base substrate and a first electrode, an insulating layer and a second electrode formed in sequence, and the 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 of any one of claims 1 to 8. 10. A method of using a liquid crystal display device, wherein the liquid crystal display device is the liquid crystal display device of claim 9, and the method of using the liquid crystal display device comprises: controlling the display surface of the liquid crystal display device to realize the first grayscale display; applying pressure to the display surface of the liquid crystal display device to form pressing marks on the display surface of the liquid crystal display device; controlling the display surface of the liquid crystal display device to realize second grayscale display, so as to eliminate the pressing trace; Wherein, the grayscale voltage displayed by the first grayscale is greater than the grayscale voltage displayed by the second grayscale.

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