CN111308800B - Pixel electrode, liquid crystal display device and use method thereof - Google Patents
Pixel electrode, liquid crystal display device and use method thereof Download PDFInfo
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- CN111308800B CN111308800B CN201911261491.4A CN201911261491A CN111308800B CN 111308800 B CN111308800 B CN 111308800B CN 201911261491 A CN201911261491 A CN 201911261491A CN 111308800 B CN111308800 B CN 111308800B
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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 larger than 180 degrees and smaller than 270 degrees, and the second included angle is larger than 90 degrees and smaller than 180 degrees. The design can realize the display function and also has the function of a tablet.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a pixel electrode, a liquid crystal display device, and a method for using the same.
Background
The thin film transistor liquid crystal display device (Thin Film Transistor Liquid Crystal Display, abbreviated as TFT-LCD) has the characteristics of small size, low power consumption, no radiation and the like, and has been rapidly developed in recent years, and particularly, the thin film transistor liquid crystal display device occupies the main market in large-sized display devices such as televisions and the like. However, at present, the TFT-LCD is mainly used for display, and has a single function.
It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The present application provides a pixel electrode, a liquid crystal display device and a method of using the same, which can provide the liquid crystal display device with 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 is provided with a main pattern area and a first edge pattern area positioned at one end of the main pattern area;
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 area comprises 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 (b)
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 principal plane and the second principal plane extend in a second direction, the second direction being non-perpendicular to the first direction.
In an exemplary embodiment of the present application, the first edge pattern area further includes a first connection plane, two 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.
In an exemplary embodiment of the present application, the middle part of the main pattern area has a middle connecting bar, the middle connecting bar has a first middle connecting surface and a second middle connecting surface which are arranged at intervals in the second direction, and 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:
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 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 and the other end of the second edge plane are respectively 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 in an opening shape.
In an exemplary embodiment of the present application, one end of each of the two ends of the slit patterns is closed, and the other end is opened; wherein:
the end parts of the slit patterns in an opening shape are positioned on the same side; or (b)
The end parts of the slit patterns which are adjacent to each other and are in an opening shape are staggered.
In an exemplary embodiment of the present application, both ends of the slit pattern are opened;
the slit pattern has a middle connecting bar at a middle portion thereof 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 part and the second slit part are the same; or (b)
The extending directions of the first slit part and the second slit part are different, and the first slit part and the second slit part are symmetrically arranged relative to the middle line of the middle connecting strip in the first direction.
A third aspect of the present application provides a liquid crystal display device, comprising: the liquid crystal display comprises an array substrate, a color film substrate and liquid crystal molecules, wherein the array substrate and the color film substrate are arranged in a box-to-box manner, and the liquid crystal molecules are filled between the array substrate and the color film substrate;
the array substrate comprises a substrate base plate, and a first electrode, an insulating layer and a second electrode which are sequentially formed, wherein an electric field formed between the first electrode and the second electrode can control deflection of 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 a liquid crystal display device includes:
controlling a display surface of the liquid crystal display device to realize first gray scale display;
applying pressure to a display surface of the liquid crystal display device to form a pressing trace on the display surface of the liquid crystal display device;
controlling the display surface of the liquid crystal display device to realize second gray scale display so as to eliminate the pressing trace;
the gray scale voltage of the first gray scale display is larger than that of the second gray scale display.
The technical scheme that this application provided can reach following beneficial effect:
according to the pixel electrode, the liquid crystal display device and the use method thereof, one end of the slit pattern in the pixel electrode is designed into the first edge pattern area or is designed into the 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 the 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, local darkness occurs at the pressing position, and a pressing trace is formed, namely: the tablet function of the liquid crystal display device is realized in which, after pressing, a stable arrangement is formed between the pressed portion and the electric field, which cannot be recovered for a long time, so as to be observed by human eyes.
In addition, in the present application, if the liquid crystal display device is to be restored to the display function, only the display surface of the liquid crystal display device needs to be controlled to realize low gray scale, such as L0 screen display, that is: reducing voltage gray scale to eliminate pressing trace; after eliminating the pressing trace, normal liquid crystal display signals are input to realize normal display functions.
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 application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic diagram showing a structure 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 an embodiment of the present application;
FIG. 3 is a schematic view showing the deflection angles of liquid crystal molecules in each region when the pixel electrode according to the first embodiment of the present application is used;
Fig. 4 shows a schematic plan view of a pixel electrode according to a second embodiment of the present application;
fig. 5 shows a schematic plan view of a pixel electrode according to a third embodiment of the present application;
fig. 6 and 7 show schematic plan views of a pixel electrode according to example four of the present application in different embodiments, respectively;
fig. 8 is a schematic plan view of a pixel electrode according to a 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 respectively show schematic plan views of a pixel electrode according to example seven of the present application in different embodiments;
FIG. 12 is a schematic plan view of a pixel electrode according to an embodiment eight of the present application;
fig. 13 is a flowchart showing a method for using the liquid crystal display device according to an embodiment of the present application;
fig. 14 is a schematic view showing the deflection angles of liquid crystal molecules at different voltages when the pixel electrode described in the second embodiment to the eighth embodiment of the present application is used.
Reference numerals:
10. a color film substrate; 101. a substrate; 102. a color film layer; 11. an array substrate; 111. a substrate base; 112. a common electrode; 113. an insulating layer; 114. a pixel electrode; 12. liquid crystal molecules.
1140. A first major planar surface; 1141. a second principal 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 surface; 1148b, a first mid-plane; 1148a; a second mid-plane; 1149. a second middle connecting surface; 1150. a first slit portion; 1151. and a second slit portion.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof 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 for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. 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 through another structure.
The terms "a," "an," "the," and "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. in addition to the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not intended to limit the number of their objects.
Currently, TFT-LCDs can be classified into: twisted Nematic (TN) type, in Plane Switching (IPS) type, and advanced super-dimensional field switching (Advanced Super Dimension Switch, ADS) type; among them, the ADS mode lcd device should have 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 as 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 film substrate 10 disposed opposite to each other, and liquid crystal molecules 12 filled between the array substrate 11 and the color film 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 realizing color display. The array substrate 11 may include a substrate 111 and first, insulating layers 113 and second electrodes formed in sequence. For example, the substrate 111 may include a plurality of TFTs arranged in an array; the first electrode may be a common electrode 112, and the common electrode 112 may be an entire surface, that is: a plate electrode; for providing a common voltage signal; the second electrode may be the pixel electrode 114, and the pixel electrode 114 may have a slit pattern, that is: slit electrodes for providing pixel voltage signals for display; a multi-dimensional electric field is generated between the pixel electrode 114 and the common electrode 112, and the liquid crystal is rotated. But is not limited thereto, the first electrode may 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 may be made of indium tin oxide (commonly known as ITO).
In order to enable the liquid crystal display device to have various functions in this application, namely: besides the display function, the display device can also have a tablet function so as to be convenient for being applied to meeting room demonstration; accordingly, the pixel electrode 114 in the array substrate 11 is improved.
The structure of the pixel electrode 114 in the different embodiments is described in detail 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 is provided with a main pattern area, a first edge pattern area and a second edge pattern area which are positioned at two ends of the main pattern area; it should be noted that, the slit pattern is an area not filled with hatching in the figure, the main pattern area is an area between the dashed line a and the dashed line B in the slit pattern in the figure, the first edge pattern area is an area on the right side of the dashed line B in the slit pattern in the figure, and the second edge pattern area is an area on the left side of the dashed line a in the slit pattern in the figure; specifically:
the main pattern region may include a first main plane 1140 and a second main plane 1141 spaced apart in the first direction X and parallel to each other; the first principal plane 1140 and the second principal plane 1141 extend in a second direction Y, which is non-perpendicular to the first direction X, so that the response time can be increased. However, the second direction Y is not limited thereto, and may be perpendicular to the first direction X. In the present 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 areas of the adjacent slit patterns in the direction perpendicular to the second direction Y may be 2.9 μm, 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; one end of the first edge plane 1142 is connected with the first main plane 1140, one end of the second edge plane 1143 is connected with 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 with two ends of the first connecting plane 1144; the first connection plane 1144 extends in a first direction X; and a first edge plane 1142 and a first main plane 1140 have a first included angle α therebetween; a second included angle β is formed 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, wherein 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 respectively connected to two ends of the second connection plane 1147; the second connection plane 1147 extends in the first direction X, and has a third included angle γ between the third edge 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.
As can be seen from the above, both ends of the slit pattern in the present embodiment are closed.
Wherein, the first included angle alpha and the fourth included angle theta are both larger than 90 degrees and smaller than 180 degrees; that is, the included angle between the first edge plane 1142 and the first connection plane 1144 and the included angle between the fourth edge plane 1146 and the second connection plane 1147 may be greater than 90 ° and less than 180 °, which is designed to allow an angular transition of the liquid crystal molecules 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, that is: the liquid crystal molecule deflection angle substantially coincides with the deflection direction of the main pattern region near the first edge plane 1142 and near the fourth edge plane 1146.
The second included angle β and the third included angle γ are both 180 ° respectively, that is, the included angle between the second edge plane 1143 and the first connection plane 1144 and the included angle between the third edge plane 1145 and the second connection plane 1147 may be smaller than 90 °, which is designed to make the electric field substantially opposite to the main pattern area in the directions near the second edge plane 1143 and near the third edge plane 1145, that is: the liquid crystal molecule deflection angle is substantially opposite to the deflection 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 center-symmetrical with respect to the center of the main pattern region, but 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 is suddenly changed relative to the liquid crystal molecules in the main pattern region, namely: the azimuth angles are arranged in opposite directions, and the discontinuous arrangement is that under a high gray-scale display screen (for example, a gray-scale L255 screen), and when pressure is applied to a display surface of the liquid crystal display device (namely, the display surface of the liquid crystal display device is pressed), the liquid crystal display device is expanded to a main pattern area, so that a local darkening condition occurs at a pressing place, and a pressing trace is formed, namely: the function of the tablet of the liquid crystal display device is realized. After the pressing, the pressed portion and the electric field form a stable arrangement, and the pressed portion cannot be recovered for a long time so as to be observed by human eyes.
In addition, in the present embodiment, if the liquid crystal display device is to be restored to the display function, only the display surface of the liquid crystal display device needs to be controlled to realize the low gray scale display such as the L0 screen display, namely: reducing voltage gray scale to eliminate pressing trace; after eliminating the pressing trace, normal liquid crystal display signals are input to realize normal display functions.
However, it should be noted that this design does not guarantee that each lcd device will generate a pressing trace, see table 1:
in table 1, three samples of the lcd device having the pixel electrode 114 of the present embodiment are listed, and it should be noted that the structures of not only the pixel electrode 114 in the experimental samples of the three lcd devices are identical, as shown in fig. 2; and other structures are identical. However, by actual comparison, it was found that not every case in the three liquid crystal display device samples was marked with pressing marks; only when the edge pattern region has liquid crystal molecules with a deflection direction opposite to that of the main pattern region and a deflection angle (namely, a reverse deflection angle) larger than 15 degrees, a pressing trace is generated; whereas no pressing mark was generated in the sample with the reverse deflection angle of 8.7 °, 10.3 °. Further, it should be understood that the transmittance in this embodiment may be defined as 100% as a reference for the transmittance in the subsequent embodiment.
As shown in fig. 3, the ordinate in fig. 3 represents the deflection angle of the liquid crystal molecules; the left side of the solid line C in fig. 3 represents the liquid crystal molecule deflection angle in the main pattern region, which is approximately in the range of 45 ° to 70 °; the solid lines C and D in fig. 3 represent the liquid crystal molecule deflection angles in the edge pattern areas (i.e., the first edge pattern area and the second edge pattern area), and as can be seen from fig. 3, the liquid crystal molecule deflection angles in the edge pattern areas fluctuate greatly, which is an electric field disturbance area, and the liquid crystal molecule deflection angles cannot be ensured 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 generated, so that the liquid crystal molecules are not deflected.
That is, if the pixel electrode 114 in the liquid crystal display device is used as the pixel electrode 114 shown in fig. 2 of the present embodiment, there is a certain chance of whether the liquid crystal display device can have a tablet function, and therefore, the use of the pixel electrode 114 shown in fig. 2 of the present embodiment is not recommended.
Example two
In this embodiment, as shown in fig. 4, the main pattern area of the slit pattern in the pixel electrode 114 may be the same as that in the first embodiment, and detailed description thereof is omitted herein; the first edge pattern region of the slit pattern may be different from the first edge pattern region in the first embodiment, and the main difference is that:
the second edge plane 1143 extends in a different direction. Specifically, as shown in fig. 4, the second included angle β formed between the second edge plane 1143 and the second main plane 1141 in the present embodiment is greater than 90 ° and less than 180 °. That is, the second edge plane 1143 and the first edge plane 1142 extend in a direction approaching each other away from one end of the main pattern region; in this case, the second edge plane 1143 and the first edge plane 1142 may be directly connected at an end remote from the main pattern region; it is also possible to connect via a first connection plane 1144, namely: the second edge plane 1143 and the first edge plane 1142 may be connected to both ends of the first connection plane 1144, respectively, at ends remote from the main pattern region.
It should be noted that the first connection 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 connection plane 1144 extends in the first direction X, the angle between the second edge plane 1143 and the first connection plane 1144 may be greater than 90 ° and less than 180 °, so that, compared with the first embodiment, the design may not only make the electric field substantially opposite to the main pattern area near the second edge plane 1143, namely: the liquid crystal molecule deflection angle is basically opposite to the deflection direction of the main pattern area near the second edge plane 1143; it is also ensured that the reverse deflection angle of the liquid crystal molecules near the second edge plane 1143 reaches 15 ° or more, so as to ensure that a pressing trace can be formed when a 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, namely: so as to ensure that the liquid crystal display device can have the function of a tablet.
Referring to table 1 below, in this embodiment, as 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 of the liquid crystal molecules can reach 97.90%.
Alternatively, the second edge pattern region of the slit pattern in the present embodiment may be the same as the second edge pattern region in the first embodiment. However, the second edge pattern area of the slit pattern in the present embodiment may be different from the second edge pattern area in the first embodiment; the main differences are that:
the third edge plane 1145 extends in a different direction, not shown. Specifically, the third included angle γ formed between the third edge plane 1145 and the first main plane 1140 in this embodiment may be greater than 90 ° and less than 180 °. That is, the third edge plane 1145 and the fourth edge plane 1146 extend in directions approaching each other away from one end of the main pattern region; in this case, the third edge plane 1145 and the fourth edge plane 1146 may be directly connected at an end remote from the main pattern region; it is also possible to connect by means of a second connection plane 1147, namely: one ends of the third and fourth edge planes 1145 and 1146, which are remote from the main pattern region, may be connected to both ends of the second connection plane 1147, respectively. The design of the first edge pattern area in this embodiment can be referred to for the purpose of this design, and the detailed description is omitted here. Since the design makes the first edge pattern area and the second edge pattern area have the liquid crystal molecules with the reverse deflection angle reaching more than 15 degrees, the occurrence degree of the pressing trace can be increased so as to enhance the tablet function of the liquid crystal display device.
Further, in the present embodiment, the second edge pattern area and the first edge pattern area may be central symmetrical with respect to the center of the main pattern area.
It should be noted that, in the present embodiment, the extending direction of the first edge plane 1142 in the first edge pattern area and the extending direction of the fourth edge plane 1146 in the second edge pattern area may be the same as the extending direction of the first edge plane 1142 in the first edge pattern area and the extending direction of the fourth edge plane 1146 in the second edge pattern area.
Example III
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 that in the second embodiment, and detailed description thereof is omitted herein; the first edge pattern region of the slit pattern may be different from the first edge pattern region in the second embodiment, and the main difference is that:
the first edge plane 1142 extends in a different direction. Specifically, as shown in fig. 5, the first included angle α formed between the first edge plane 1142 and the first main plane 1140 in the present embodiment is greater than 180 ° and less than 270 °. That is, the first edge plane 1142 extends away from the side of the second main plane 1141 toward the end of the main pattern region; in this case, the ends of the first and second edge planes 1142 and 1143 remote from the main pattern region may be directly connected; it is also possible to connect via a first connection plane 1144, namely: one ends of the first and second edge planes 1142 and 1143, which are remote from the main pattern region, may be connected to both ends of the first connection plane 1144, respectively.
In this embodiment, the design can ensure that the first edge pattern region has liquid crystal molecules with a reverse deflection angle (namely, an angle opposite to the liquid crystal deflection angle of the main pattern region) of more than 15 degrees, so as to ensure that pressing traces can be formed when pressure is applied to the display surface of the liquid crystal display device (namely, the display surface of the liquid crystal display device is pressed) under a specific display screen (for example, a gray-scale L255 screen), namely: so as to ensure that the liquid crystal display device can have the function of a tablet; and the transmittance can be improved as compared with the second embodiment.
Referring to table 1 below, in the pixel electrode 114 shown in fig. 5 in this embodiment, there are liquid crystal molecules with a reverse deflection angle of 30 ° in the first edge pattern region, and the transmittance can reach 98.57%.
In addition, the second edge pattern region of the slit pattern in the present embodiment may be the same as the second edge pattern region in the first or second embodiment. However, the second edge pattern area of the slit pattern in the present embodiment may be different from the second edge pattern areas 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, the fourth included angle θ formed between the fourth edge plane 1146 and the second main plane 1141 in the present embodiment may be greater than 180 ° and less than 270 °. That is, the fourth edge plane 1146 extends away from the side of the first main plane 1140 from the end of the main pattern area; in this case, the fourth edge plane 1146 and the third edge plane 1145 may be directly connected at an end remote from the main pattern region; it is also possible to connect by means of a second connection plane 1147, namely: the ends of the fourth edge plane 1146 and the third edge plane 1145 remote from the main pattern region 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 center-symmetrical with respect to the center of the main pattern region.
It should be noted that, in the present embodiment, the extending direction of the second edge plane 1143 in the first edge pattern area and the extending direction of the third edge plane 1145 in the second edge pattern area may be the same as the extending direction of the second edge plane 1143 in the first edge pattern area and the extending direction of the third edge plane 1145 in the second edge pattern area.
Example IV
In this embodiment, the first edge pattern region of the slit pattern in the pixel electrode 114 may be the same as the first edge pattern region in the third embodiment, and the second edge pattern region may be the same as the second edge pattern region in the first embodiment, as shown in fig. 6; however, the first edge pattern area in the present embodiment is not limited thereto, and may be the same as the first edge pattern area in the second embodiment; the second edge pattern area in this embodiment may also be the same as the second edge pattern area in the second embodiment or the third embodiment, and detailed descriptions thereof are omitted herein. The main pattern area of the slit pattern may be different from that of the first, second or third embodiments, and the main difference is that:
In this embodiment, the middle of the main pattern area has a middle connecting bar, while in the first, second and third embodiments, the middle of the main pattern area does not have a middle connecting bar. Specifically, in the present embodiment, the middle connecting strip has a first middle connecting surface 1148 and a second middle connecting surface 1149 that are disposed at intervals 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 middle connecting surface 1148 may be a surface of the middle connecting strip away from the first edge pattern region, and the second middle connecting surface 1149 may be a surface of the middle connecting strip close to the first edge pattern region. The design is such that the corner formed by the first middle connecting surface 1148 and the second main plane 1141 in the middle connecting strip may also have liquid crystal molecules with a reverse deflection angle of more than 15 °, namely: the area capable of enabling the reverse deflection angle of the liquid crystal molecules to reach more than 15 degrees is increased, that is, at least two areas in the embodiment can have the liquid crystal molecules with the reverse deflection angle reaching more than 15 degrees, so that the occurrence degree of pressing marks can be increased, and the function of a tablet of the liquid crystal display device can be enhanced.
Alternatively, the first middle connecting surface 1148 and the second middle connecting surface 1149 may be planar surfaces extending in the first direction X, as shown in fig. 6. However, the first middle connecting surface 1148 may be a bending surface formed by a plurality of planes; specifically, as shown in fig. 7, the first middle connecting surface 1148 has at least a first middle plane 1148b and a second middle plane 1148a, and the first middle plane 1148b is connected to the second main plane 1141 through the second middle plane 1148a, where: the first mid-plane 1148b may be a plane extending in the first direction X; the angle between the second middle plane 1148a and the first middle plane 1148b is greater than 90 ° and less than 180 °; the angle between the second middle plane 1148a and the second main plane 1141 is greater than 90 ° and less than 180 °, so that the reverse deflection angle of the liquid crystal molecules at the corner formed by the first middle connection plane 1148 and the second main plane 1141 can be increased to increase the occurrence degree of the pressing trace.
Referring to table 1 below, in the pixel electrode 114 shown in fig. 6, there are two regions in which the liquid crystal molecules with the opposite deflection angle of 30 ° exist, one region is the first edge pattern region, and the other region 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.
Example five
In this embodiment, as shown in fig. 8, the slit pattern in the pixel electrode 114 is different from the slit pattern in the first, second, third and fourth embodiments, and the main difference is that:
two ends of the slit pattern in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment are closed, one end of the slit pattern in the embodiment is closed, and the other end of the slit pattern is open; as shown in fig. 8, the ends of the slit patterns of the pixel electrode 114, which are open, are all located on the same side.
Specifically, in this embodiment, each slit pattern may include a main pattern area (right side of the dotted line a shown in fig. 8) and a second edge pattern area (left side of the dotted line a shown in fig. 8), the second edge pattern area is located at one side of the main pattern area, and one side of the main pattern area away from the second edge pattern area is opened, so that the reverse deflection angle of the liquid crystal molecules at the opened end of the slit pattern can be ensured to be more than 15 °, so as to ensure that a pressing trace can be formed when a pressing force 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: so as to ensure that the liquid crystal display device can have the function of a tablet.
It should be noted that, in the present embodiment, the design schemes of the main pattern area and the second edge pattern area may refer to the design schemes of the main pattern area and the second edge pattern area in the first embodiment; that is, the slit pattern shown in fig. 8 in this embodiment can be obtained by removing the first edge pattern region in the slit pattern on the basis of the pixel electrode 114 in the first embodiment. However, the design of the second edge pattern region in the present embodiment is not limited thereto, and reference may also be made to the design of the second edge pattern in the "second edge pattern region and the first edge pattern region in the second embodiment or the third embodiment" the second edge pattern region and the first edge pattern region may be in central symmetry with respect to the center of the main pattern region ".
It should be understood that the reference numerals appearing in fig. 8 of the present embodiment are the same as those of the first embodiment, and are not described in detail herein.
Referring to table 2 below, 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 one end of the slit pattern, and the transmittance of 104.89% at this time.
Example six
In this embodiment, as shown in fig. 9, the slit pattern of the pixel electrode 114 is different from that of the pixel electrode 114 in the fifth embodiment, and the main difference is that:
In the fifth embodiment, the end parts of the slit patterns in the shape of openings are all positioned on the same side; in this embodiment, the open ends of the adjacent slit patterns are staggered.
Specifically, in this 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), it should be understood that the first edge pattern region and the second edge pattern region are used for blocking different sides of the main pattern region, so that the open ends between the adjacent slit patterns are staggered. The design ensures that the reverse deflection angle of the liquid crystal molecules at one end of the slit pattern in an opening shape can reach more than 15 degrees, so as to ensure that pressing traces can be formed when pressure is applied to the display surface of the liquid crystal display device (namely, the display surface of the liquid crystal display device is pressed) under the condition of high gray scale such as an L255 display screen, namely: so as to ensure that the liquid crystal display device can have the function of a tablet.
It should be noted that, in the embodiment, the design schemes of the main pattern area, the first edge pattern area, and the second edge pattern area may 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, 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 is removed, so that the pixel electrode 114 in this embodiment can be obtained. However, the design of the first edge pattern region in the present embodiment is not limited thereto, and reference may be made to the first edge pattern region in the second embodiment or the third embodiment, and reference may be made to the design of the second edge pattern region in the second embodiment or the third embodiment, wherein the second edge pattern region and the first edge pattern region may be in central symmetry with respect to the center of the main pattern region.
It should be understood that the reference numerals appearing in fig. 9 of the present embodiment are the same as those of the first embodiment, and are not described in detail herein.
Referring to table 2 below, in this embodiment, as shown in the pixel electrode 114 of fig. 9, there are liquid crystal molecules with a reverse deflection angle of 32 ° at one end of the slit pattern, and the transmittance 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 that 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 area in each slit pattern are respectively provided with a first edge pattern area and a second edge pattern area, namely: 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 of the slit pattern in the present embodiment may refer to the design of the main pattern area of the slit pattern in the fourth embodiment. In this embodiment, by disposing a middle connecting bar in the middle of the slit pattern, the middle connecting bar may extend in the first direction X, that is: the middle connecting strip may 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 thereto, the middle connecting strip may be in other forms; the slit pattern may be divided into a first slit part 1150 and a second slit part 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 each have an open end (i.e., an open end), so that the reverse deflection angle of the liquid crystal molecules at the open ends of the first slit portion 1150 and the second slit portion 1151 can be 15 ° or more, that is, at least two regions in the present embodiment can have the liquid crystal molecules with the reverse deflection angle of 15 ° or more, and thus, the occurrence degree of the pressing trace can be increased to enhance the tablet function of the liquid crystal display device.
Referring specifically to table 1 below, in the pixel electrode 114 shown in fig. 10 in this embodiment, there are two regions in which liquid crystal molecules having a reverse deflection angle of up to 30 ° exist, one region being at the open end of the first slit portion 1150 and the other region being at the open end of the second slit portion 1151. And the transmittance can reach 99.0 percent at the moment.
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 are generally disposed in the pixel electrode 114 and arranged in the first direction X, which may be defined as a first slit group M and a second slit group N, respectively, 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 second slit group N and are symmetrically disposed with respect to the direction perpendicular to the first direction X. But is designed such that a dark area appears in between the first slit group M and the second slit group N.
Example eight
In the present embodiment, as shown in fig. 12, the slit pattern of the pixel electrode 114 is different from that of the pixel electrode 114 in the seventh embodiment, and the main difference is that:
the extending directions of the first slit portion 1150 and the second slit portion 1151 are the same in the seventh embodiment; 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.
Alternatively, as shown in fig. 12, the first slit portion 1150 and the second slit portion 1151 are symmetrically disposed about a center line of a center connecting bar (this center connecting bar may be described with reference to embodiment seven) in the first direction X, so that not only 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 be made to be 15 ° or more, that is, at least two regions in this embodiment can have liquid crystal molecules whose reverse deflection angles are 15 ° or more, and therefore, the occurrence degree of pressing marks can be increased to enhance the tablet function of the liquid crystal display device; further, compared with the arrangement of the first slit group and the second slit group mentioned in the seventh embodiment, since it is not necessary to provide two slit groups having different extending directions in the first direction X, it is possible to avoid a dark area between the two slit groups having different extending directions.
Referring specifically to table 1 below, in the pixel electrode 114 shown in fig. 12 in this embodiment, there are two regions in which liquid crystal molecules having a reverse deflection angle of up to 38 ° exist, one region being at the open end of the first slit portion 1150 and the other region being at the open end of the second slit portion 1151. And the transmittance can reach 99.3 percent at the moment.
It should be appreciated that the first slit portion 1150 and the second slit portion 1151 may also be provided asymmetrically, as the case may be.
Wherein, table 1 mentioned in any of the foregoing examples is as follows:
TABLE 1
In order to ensure that the liquid crystal display device has a display function and also has a tablet function, the design of the pixel electrode 114 in the liquid crystal display device of this embodiment is preferably the design of the second to eighth embodiments. In addition, it should be noted that, the design scheme of the pixel electrode 114 in the present embodiment is not limited to the scheme described in the second embodiment to the eighth embodiment, and other designs may be adopted as long as the liquid crystal display device can be ensured to have a display function and a tablet function.
It should be noted that the shape of the pixel electrode shown in fig. 2, 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, where the liquid crystal display device may include: an array substrate 11 and a color film substrate 10 arranged in a pair of cells, 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 formed in sequence, wherein an electric field formed between the first electrode and the second electrode can control deflection of liquid crystal; at least one of the first electrode and the second electrode is the pixel electrode 114 described in any one of the foregoing embodiments two to eight.
Specifically, as shown in fig. 13, the method for using 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 implement a first gray scale display, where the first gray scale display is a high gray scale display, for example: 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 picture display through circuit adjustment, namely: 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 implement the second gray scale display to eliminate the pressing trace. For example, the circuit can be adjusted to enable the display surface of the liquid crystal display device to realize a second gray scale display, such as: l0 is shown, but is not limited thereto, as the case may be; to close the function of the tablet to eliminate pressing marks; it should be noted that the circuit may be an internal structure of the liquid crystal display device.
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 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, specifically, as can be seen from fig. 14, the abscissa represents the voltage, and the ordinate represents the liquid crystal molecule deflection angle. The states of the liquid crystal molecules at different voltages are compared, and it is found that at high voltages, namely: when the voltage is greater than 6.2V (right side of solid line E in the figure), the display surface may be the aforementioned first gray-scale display, and the liquid crystal molecules having a reverse deflection angle greater than 15 ° are present, 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: at a voltage of 0 to 6.2V (left side of 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 are reversely deflected, or there may be liquid crystal molecules that are reversely deflected, but the reverse deflection angle is small, specifically less than 15 °, so that there is no pressing trace when actually pressing the display surface of the liquid crystal display device.
In summary, in order to eliminate the pressing trace, it is actually possible to reduce the voltage of the liquid crystal display device (i.e., reduce the gray scale of the liquid crystal display device).
It should be noted that, the specific type of the lcd device in the present embodiment is not particularly limited, and the type of the lcd device commonly used in the art may be, for example, a lcd, a mobile phone, a computer, a television, etc., and those skilled in the art may select the lcd device accordingly according to the specific application of the lcd device, which is not described herein again.
The liquid crystal display device in this embodiment not only includes the components described in the foregoing embodiments, but also includes other necessary components and components, taking the liquid crystal display as an example, specifically, such as a housing, a circuit board, a power line, etc., which are not described herein again, and the liquid crystal display device can be correspondingly supplemented according to the specific use requirements of the display device.
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 application 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 application 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 (5)
1. A pixel electrode, wherein the pixel electrode has a plurality of slit patterns arranged in a first direction; the slit pattern is provided with a main pattern area and a first edge pattern area positioned at one end of the main pattern area;
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 area comprises a first edge plane and a second edge plane; one end of the first edge plane is connected with the first main plane, and one end of the second edge plane is connected with the second main 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;
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;
the first edge pattern region further includes a first connection plane, both ends of the first connection plane are respectively connected with the other end of the first edge plane and the other end of the second edge plane, and the first connection plane extends in the first direction.
2. The pixel electrode according to claim 1, wherein a middle portion of the main pattern region has a middle connecting bar having a first middle connecting surface and a second middle connecting surface which are disposed at intervals 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 planes extending in the first direction.
3. The pixel electrode according to claim 1, wherein,
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 and the other end of the second edge plane are respectively connected with two ends of the second connecting plane.
4. A liquid crystal display device, comprising: the liquid crystal display comprises an array substrate, a color film substrate and liquid crystal molecules, wherein the array substrate and the color film substrate are arranged in a box-to-box manner, and the liquid crystal molecules are filled between the array substrate and the color film substrate;
the array substrate comprises a substrate base plate, and a first electrode, an insulating layer and a second electrode which are sequentially formed, wherein an electric field formed between the first electrode and the second electrode can control deflection of liquid crystal;
wherein at least one of the first electrode and the second electrode is the pixel electrode according to any one of claims 1 to 3.
5. A method of using the liquid crystal display device of claim 4, comprising:
controlling a display surface of the liquid crystal display device to realize first gray scale display;
applying pressure to a display surface of the liquid crystal display device to form a pressing trace on the display surface of the liquid crystal display device;
controlling the display surface of the liquid crystal display device to realize second gray scale display so as to eliminate the pressing trace;
the gray scale voltage of the first gray scale display is larger than that of the second gray scale display.
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| WO2022261951A1 (en) * | 2021-06-18 | 2022-12-22 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor, display device, and mask |
| CN113467138B (en) * | 2021-07-20 | 2023-12-19 | 北京京东方光电科技有限公司 | Array substrate, preparation method thereof, display assembly and display device |
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