CN116184723A

CN116184723A - Liquid crystal prism and display device

Info

Publication number: CN116184723A
Application number: CN202310310292.8A
Authority: CN
Inventors: 曾洋
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-05-30

Abstract

The embodiment of the application provides a liquid crystal prism and a display device, wherein the liquid crystal prism comprises a plurality of sub-prisms, the sub-prisms comprise a first electrode, a second electrode group and a liquid crystal layer positioned between the first electrode and the second electrode group, the second electrode group comprises a plurality of second electrodes, and the plurality of second electrodes comprise a first second electrode and a last second electrode; the plurality of sub-prisms comprise a first sub-prism and a second sub-prism which are adjacent to each other, and the direction of the first sub-prism pointing to the second sub-prism is the same as the direction of the first second electrode pointing to the last second electrode in the same sub-prism; the minimum distance between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism is larger than the minimum distance between two adjacent second electrodes in the first sub-prism. According to the method, the transverse electric field intensity between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism can be reduced, and the problem of reverse deflection of liquid crystal molecules at adjacent positions of the first sub-prism and the second sub-prism is solved.

Description

Liquid crystal prism and display device

[ field of technology ]

The application relates to the technical field of display, in particular to a liquid crystal prism and a display device.

[ background Art ]

In recent years, with the continuous popularization and competition of intelligent display products, naked eye 3D display devices have become an important point of research in the field of display technology. The existing naked eye 3D display device generally comprises a display panel and a liquid crystal prism, wherein the liquid crystal prism is arranged on the light emitting surface of the display panel in a certain mode, and after light rays in the display panel pass through the liquid crystal prism and are split by the liquid crystal prism, different visual images can be seen by two eyes of a person, so that the sense of a stereoscopic image is generated.

However, in the existing liquid crystal prism, the liquid crystal in the liquid crystal prism often has the problem of reverse deflection, so that the naked eye 3D display device manufactured by using the liquid crystal prism has the problems of stray light, reduced contrast and the like, and the display quality is affected.

[ invention ]

In view of the foregoing, embodiments of the present application provide a liquid crystal prism and a display device to solve the above-mentioned problems.

In a first aspect, an embodiment of the present application provides a liquid crystal prism, including a first substrate and a second substrate that are disposed opposite to each other, where a plurality of sub-prisms arranged along a first direction are disposed between the first substrate and the second substrate, the sub-prisms include a first electrode, a second electrode group, and a liquid crystal layer disposed between the first electrode and the second electrode group, the first electrode is disposed on the first substrate, the second electrode group is disposed on the second substrate, the second electrode group includes a plurality of second electrodes arranged along the first direction, and the plurality of second electrodes include a first second electrode and a last second electrode; the liquid crystal display device comprises a plurality of sub-prisms, a plurality of first sub-prisms and a plurality of second sub-prisms, wherein the first sub-prisms and the second sub-prisms are adjacent, the direction of the first sub-prisms pointing to the second sub-prisms is the same as the direction of the first second electrodes pointing to the last second electrodes in the same sub-prisms, in the working state of the liquid crystal display device, the voltages on the second electrodes are gradually increased along the direction of the first second electrodes pointing to the last second electrodes in the first sub-prisms, and the voltages on the last second electrodes in the first sub-prisms are larger than the voltages on the first second electrodes in the second sub-prisms;

the minimum distance between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism is D1, and the minimum distance between two adjacent second electrodes in the first sub-prism is D2, wherein D1 is more than D2.

In a second aspect, an embodiment of the present application provides a display device, including a liquid crystal prism and a display panel provided in the first aspect, where the liquid crystal prism is located on a light-emitting surface of the display panel.

In this embodiment, the minimum distance between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism is set to be greater than the minimum distance between two adjacent second electrodes in the first sub-prism, that is, the distance between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism is set to be greater, then the strength of the transverse electric field between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism can be reduced, the problem of reverse deflection of liquid crystal molecules at the adjacent positions of the first sub-prism and the second sub-prism is facilitated to be improved, and accordingly the display quality of the naked eye 3D display device adopting the liquid crystal prism is facilitated to be improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art voltage driving of a liquid crystal prism;

fig. 2 is a schematic diagram of a liquid crystal prism according to an embodiment of the present disclosure;

fig. 3 is a schematic voltage driving diagram of a liquid crystal prism according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a voltage driving of another liquid crystal prism according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of another liquid crystal prism according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a voltage driving of the liquid crystal prism of FIG. 5;

FIG. 7 is a schematic view of another liquid crystal prism according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a voltage driving of the liquid crystal prism of FIG. 7;

FIG. 9 is a schematic diagram of a voltage driving of another liquid crystal prism according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a voltage driving of a liquid crystal prism according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a voltage driving of another liquid crystal prism according to an embodiment of the present disclosure;

fig. 12 is a schematic diagram of a display device according to an embodiment of the present application.

[ detailed description ] of the invention

For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the present specification, it is to be understood that the terms "substantially," "approximately," "about," "approximately," "substantially," and the like as used in the claims and examples herein refer to values that are generally agreed upon, rather than exact, within reasonable process operating ranges or tolerances.

It should be understood that although the terms first, second, etc. may be used in embodiments of the present application to describe electrodes, sub-prisms, etc., these electrodes, sub-prisms, etc. should not be limited to these terms. These terms are only used to distinguish electrodes, sub-prisms, etc. from one another. For example, a first electrode may also be referred to as a second electrode, and similarly, a second electrode may also be referred to as a first electrode, without departing from the scope of embodiments of the present application.

Fig. 1 is a schematic diagram of a prior art voltage driving of a liquid crystal prism.

In the field of naked eye 3D display technology, a liquid crystal prism is generally disposed on a light emitting surface of a display panel, where the liquid crystal prism includes an upper substrate, a lower substrate, an upper electrode disposed on the upper substrate, a plurality of strip electrodes disposed on the lower substrate, and a liquid crystal layer disposed between the plurality of strip electrodes and the upper electrode. When the naked eye 3D display device works, driving voltage is applied to a strip electrode group formed by the upper electrode and the strip electrodes to form a gradient electric field, so that the liquid crystal rotation directions between the upper electrode and the strip electrode group are different, the liquid crystal prism has the function of a grating, two eyes of a person can see different visual images, and naked eye 3D display is realized. The liquid crystal prism comprises a plurality of strip electrode groups.

As shown in fig. 1, in a conventional liquid crystal prism 01', the liquid crystal prism 01' includes a first substrate 10 'and a second substrate 20' disposed opposite to each other. A plurality of sub-prisms 11' arranged along the first direction X ' are disposed between the first substrate 10' and the second substrate 20', and the sub-prisms 11' include a first electrode 12' disposed on the first substrate 10', a second electrode group 13' disposed on the second substrate 20', and a liquid crystal layer (not shown) disposed between the first electrode 12' and the second electrode group 13 '.

The second electrode group 13' includes a plurality of second electrodes 130', and the first second electrode 130A ' and the last second electrode 130Z ' are included in the plurality of second electrodes 130 '. In each sub-prism 11', the directions in which the first second electrode 130A ' points to the last second electrode 130Z ' are the same, and in the liquid crystal prism 01', the distances between any adjacent two second electrodes 130' are the same.

The present inventors have found through researches that, in the conventional liquid crystal prism 01', when the difference between the voltage V (shown as a black dot in the drawing) on the last second electrode 130Z ' and the voltage V (shown as a black dot in the drawing) on the first second electrode 130A ' in the second electrode group 13' is large, a large transverse electric field is generated between two adjacent sub-prisms 11', so that the liquid crystal molecules at the adjacent positions of the two adjacent sub-prisms 11' are reversely deflected, and the corresponding optical phase cannot be obtained, thereby causing the problems of stray light and low contrast to occur in the naked eye 3D display device using the liquid crystal prism 01', and affecting the display quality.

The inventors of the present application considered that the reverse deflection of the liquid crystal molecules is due to the transverse electric field, and reduced the intensity of the transverse electric field becomes a solution.

The applicant has provided a solution to the problems existing in the prior art by intensive studies.

Fig. 2 is a schematic diagram of a liquid crystal prism provided in an embodiment of the present application, fig. 3 is a schematic voltage driving diagram of a liquid crystal prism provided in an embodiment of the present application, and fig. 4 is a schematic voltage driving diagram of another liquid crystal prism provided in an embodiment of the present application.

The embodiment of the application provides a liquid crystal prism 01, as shown in fig. 2, which comprises a first substrate 10 and a second substrate 20 which are oppositely arranged. A plurality of sub-prisms 11 arranged along the first direction X are disposed between the first substrate 10 and the second substrate 20. The first direction X intersects the arrangement direction of the first substrate 10 and the second substrate 20.

Each sub-prism 11 includes a first electrode 12, a second electrode group 13, and a liquid crystal layer 14 between the first electrode 12 and the second electrode group 13. The first electrode 12 is disposed on the first substrate 10, and the second electrode group 13 is disposed on the second substrate 20. Of course, the first electrode 12 is located on a side of the first substrate 10 facing the second substrate 20, and the second electrode group 13 is located on a side of the second substrate 20 facing the first substrate 10.

The first electrode 12 may be disposed on the entire surface of the first substrate 10, and the second electrode group 13 includes a plurality of second electrodes 130 arranged along the first direction X, where the plurality of second electrodes 130 includes a first second electrode 130A and a last second electrode 130Z.

That is, the second electrode group 13 may include Z second electrodes 130, Z.gtoreq.2; the second electrode set 13 includes 1 st electrode to Z electrode arranged in sequence, the 1 st electrode of the second electrode set 13 is the first second electrode 130, the first second electrode 130 is the first second electrode 130A, the Z electrode of the second electrode set 13 is the last second electrode 130, and the last second electrode 130 is the last second electrode 130Z.

When the liquid crystal prism 01 works, a driving voltage is applied to each second electrode 130 of the first electrode 12 and the second electrode group 13 to form a gradient electric field so as to enable the rotation directions of liquid crystal molecules in the liquid crystal layer 14 to be different, and gradual change of the orientation of the liquid crystal molecules and a correspondingly observed optical phase gradient are formed, so that the liquid crystal prism 01 has the grating function and naked eye 3D display is realized.

The plurality of sub-prisms 11 includes a first sub-prism 111 and a second sub-prism 112 adjacent to each other, and the direction in which the first sub-prism 111 points to the second sub-prism 112 is the same as the direction in which the first second electrode 130A points to the last second electrode 130Z in the same sub-prism 11. That is, the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 may be close to each other, and the minimum distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 may be the minimum distance between the second electrode group 13 of the first sub-prism 111 and the second electrode group 13 of the second sub-prism 112. Of course, in the different sub-prisms 11, the direction in which the first second electrode 130A points to the last second electrode 130Z may be the same.

The driving voltage applied to each of the second electrodes 130 of the first sub-prisms 111 may be similar to the driving voltage applied to each of the second electrodes 130 of the second sub-prisms 112. In some embodiments, the same voltage may be applied to two second electrodes 130 (e.g., first second electrode 130A of first sub-prism 111 and first second electrode 130A of second sub-prism 112, last second electrode 130Z of first sub-prism 111 and last second electrode 130Z of second sub-prism 112, etc.) corresponding to first sub-prism 111 and second sub-prism 112.

In the operation state of the liquid crystal prism 01, as shown in fig. 3, in the first sub-prism 111 and the second sub-prism 112, along the direction in which the first second electrode 130A points to the last second electrode 130Z, the voltage V (as shown by the black dots in the figure) on each second electrode 130 is gradually increased, and the voltage on the last second electrode 130Z in the first sub-prism 111 is greater than the voltage on the first second electrode 130A in the second sub-prism 112.

Of course, as shown in fig. 4, in the first sub-prism 111 and the second sub-prism 112, along the direction in which the first second electrode 130A points to the last second electrode 130Z, the voltage V (shown as a black dot in the figure) on each second electrode 130 may also decrease gradually, and the voltage on the last second electrode 130Z in the first sub-prism 111 is smaller than the voltage on the first second electrode 130A in the second sub-prism 112.

It will be appreciated that when the direction in which the first second electrode 130A points to the last second electrode 130Z in fig. 4 is exactly opposite to the direction in which the first second electrode 130A points to the last second electrode 130Z in fig. 3, the first sub-prism 111 in fig. 4 may be identical to the second sub-prism 112 in fig. 3, and the second sub-prism 112 in fig. 4 may be identical to the first sub-prism 111 in fig. 3.

That is, there is necessarily a direction in which the first second electrode 130A points to the last second electrode 130Z as the first second electrode 130A in the adjacent first sub-prism 111 and second sub-prism 112, so that the voltage on each second electrode 130 is gradually increased, and the voltage on the last second electrode 130Z in the first sub-prism 111 is greater than the voltage on the first second electrode 130A in the second sub-prism 112.

As shown in fig. 2, the minimum distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is D1, and the minimum distance between two adjacent second electrodes 130 in the first sub-prism 111 is D2, where D1 > D2. Of course, in the same first sub-prism 111, the second electrodes 130 in the second electrode group 13 may be arranged at equal intervals.

In this embodiment, the minimum distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is set to be greater than the minimum distance between two adjacent second electrodes 130 in the first sub-prism 111, i.e. the distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is set to be greater, so that the strength of the transverse electric field between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 can be reduced, which is beneficial to improving the problem of reverse deflection of liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112, thereby being beneficial to improving the display quality of the naked eye 3D display device adopting the liquid crystal prism 01.

With continued reference to fig. 2, in one embodiment of the present application, the minimum distance between two adjacent second electrodes 130 in the second sub-prism 112 is D3, d2=d3. Of course, in the same second sub-prism 112, the second electrodes 130 in the second electrode group 13 may be arranged at equal intervals.

D2=d3 means that D2 and D3 are identical within a certain error range, which may be caused by an error of the manufacturing process or the measuring tool. Of course, the second electrodes 130 in the second electrode group 13 are equally spaced within a certain error range.

As can be seen from the fact that the minimum distance D1 between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is greater than the minimum distance D2 between two adjacent second electrodes 130 in the first sub-prism 111, the minimum distance D1 between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is also greater than the minimum distance D3 between two adjacent second electrodes 130 in the second sub-prism 112.

In this embodiment, the minimum distance between two adjacent second electrodes 130 in the first sub-prism 111 is set to be the same as the minimum distance between two adjacent second electrodes 130 in the second sub-prism 112, so that the same design of the first sub-prism 111 and the second sub-prism 112 is facilitated while the larger distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is ensured, thereby facilitating the reduction of the design difficulty and the driving difficulty of the liquid crystal prism 01.

Fig. 5 is a schematic diagram of another liquid crystal prism according to an embodiment of the present application, and fig. 6 is a voltage driving schematic diagram of the liquid crystal prism shown in fig. 5.

In one embodiment of the present application, as shown in fig. 5, at least one intermediate electrode 15 is disposed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, and the intermediate electrode 15 and the second electrode 130 are arranged along the first direction X. The intermediate electrode 15 and the second electrode 130 may be disposed in the same layer, and of course, the intermediate electrode 15 may be the same as the second electrode 130 in material, size and structure.

Optionally, the number of intermediate electrodes 15 between adjacent first sub-prisms 111 and second sub-prisms 112 is S1, S1. Ltoreq.2. That is, one or two intermediate electrodes 15 may be disposed between the adjacent first sub-prisms 111 and second sub-prisms 112, so as to avoid that too many intermediate electrodes 15 may have a larger influence on the alignment of the liquid crystal molecules, which is beneficial to ensuring that the liquid crystal molecules in the liquid crystal prisms are in a more ideal shape.

Fig. 5 only illustrates a case where one intermediate electrode 15 is provided between the adjacent first sub-prisms 111 and second sub-prisms 112.

In the operating state of the liquid crystal prism 01, as shown in fig. 6, the voltage on the last second electrode 130Z in the first sub-prism 111 is the first voltage V1, the voltage on the first second electrode 130A in the second sub-prism 112 is the second voltage V2, the voltage on the intermediate electrode 15 is the intermediate voltage Vt, and the intermediate voltage Vt is smaller than the first voltage V1 and larger than the second voltage V2. I.e., V2 < Vt < V1.

When a plurality of intermediate electrodes 15 are disposed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, the intermediate voltages Vt of the intermediate electrodes 15 are all greater than the second voltage V2 of the first second electrode 130A of the second sub-prism 112 and are all smaller than the first voltage V1 of the last second electrode 130Z of the first sub-prism 111. Of course, the intermediate voltages Vt on the respective intermediate electrodes 15 may be different from each other.

As can be seen from the first sub-prism 111 and the second sub-prism 112, along the direction in which the first second electrode 130A points to the last second electrode 130Z, the voltage on each second electrode 130 is gradually increased, and the voltage on the last second electrode 130Z in the first sub-prism 111 is greater than the voltage on the first second electrode 130A in the second sub-prism 112, in the first sub-prism 111, the voltage on each second electrode 130 is gradually increased to the first voltage V1 from the first second electrode 130A to the last second electrode 130Z, and of course, as shown in fig. 6, the voltage on the first second electrode 130A in the first sub-prism 111 may be the second voltage V2.

In the second sub-prism 112, the voltage on each second electrode 130 is gradually increased from the second voltage V2, from the first second electrode 130A toward the last second electrode 130Z. Of course, as shown in fig. 6, the voltage on the last second electrode 130Z in the second sub-prism 112 may be the first voltage V1.

It can be understood that when the naked eye 3D display device using the liquid crystal prism 01 displays different frame images, the positions of the first sub-prism 111 and the second sub-prism 112 in the liquid crystal prism 01 may be changed, that is, the second electrodes 130 included in the first sub-prism 111 and the second sub-prism 112 in different frames may not be the same, and the second electrodes 130 included in the first sub-prism 111 and the second sub-prism 112 are not fixed. In a different frame, the intermediate electrode 15 may be used as the second electrode 130, and the second electrode 130 may also be used as the intermediate electrode 15.

In this embodiment, at least one intermediate electrode 15 is disposed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, which is beneficial to ensuring that at least one intermediate electrode 15 exists between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 in any frame of the display device, thereby being beneficial to ensuring that the distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is larger.

Meanwhile, the intermediate voltage Vt on the intermediate electrode 15 is set to be greater than the second voltage V2 on the first second electrode 130A in the second sub-prism 112 and smaller than the first voltage V1 on the last second electrode 130Z in the first sub-prism 111, so that the voltage when the intermediate electrode 15 maintains the previous frame of picture can be avoided, which is beneficial to ensuring that the transverse electric field between the last second electrode 130Z in the first sub-prism 111 and the first second electrode 130A in the second sub-prism 112 can be reduced, thereby being beneficial to improving the problem of reverse deflection of the liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112 and improving the display quality of the naked eye 3D display device adopting the liquid crystal prism 01.

In an implementation manner of the embodiment of the present application, please continue to refer to fig. 5, an intermediate electrode 15 is included between the first sub-prism 111 and the second sub-prism 112, a minimum distance between the intermediate electrode 15 and the last second electrode 130Z in the first sub-prism 111 is W1, and a minimum distance between the intermediate electrode 15 and the first second electrode 130A in the second sub-prism 112 is W2 along the first direction X, where w1=w2.

That is, when only one intermediate electrode 15 is disposed between the first sub-prism 111 and the second sub-prism 112, the intermediate electrode 15 may be centrally distributed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112.

Alternatively, as shown in fig. 5, in the same sub-prism 11, the minimum distance between each adjacent two of the second electrodes 130 is the same, w1=w2=d2=d3. That is, the second electrodes 130 in the first sub-prisms 111, the intermediate electrodes 15, and the second electrodes 130 in the second sub-prisms 112 may be arranged at equal intervals.

Further, as shown in fig. 6, the intermediate voltage Vt on the intermediate electrode 15 is an arithmetic average of the first voltage V1 and the second voltage V2.

The implementation manner can ensure that the intensity of the transverse electric field between the middle electrode 15 and the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is not too high, which is beneficial to ensuring that the alignment of liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112 meets the requirement.

Fig. 7 is a schematic diagram of another liquid crystal prism according to an embodiment of the present application, and fig. 8 is a voltage driving schematic diagram of the liquid crystal prism shown in fig. 7.

In yet another implementation of the embodiment of the present application, as shown in fig. 7, at least two intermediate electrodes 15 are included between the first sub-prism 111 and the second sub-prism 112, and each intermediate electrode 15 is equally spaced between the first sub-prism 111 and the second sub-prism 112 along the first direction X. The minimum distance between adjacent two intermediate electrodes 15 may be the same as the distance between adjacent two second electrodes 130 in the same sub-prism 11.

Fig. 7 is only a view illustrating a case where two intermediate electrodes 15 are included between the first sub-prism 111 and the second sub-prism 112.

In the operation state of the liquid crystal prism 01, as shown in fig. 8, the intermediate voltages Vt of the intermediate electrodes 15 between the first sub-prism 111 and the second sub-prism 112 are different from each other, and the intermediate voltage Vt of the intermediate electrode 15 is larger as the intermediate electrode 15 is closer to the first sub-prism 111.

Optionally, the first voltage V1 on the last second electrode 130Z of the first sub-prism 111, the intermediate voltage Vt on each intermediate electrode 15, and the second voltage V2 on the first second electrode 130A of the second sub-prism 112 are in an arithmetic progression relationship.

The distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 can be further increased, so that the intensity of the transverse electric field between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 can be further reduced, and the problem of reverse deflection of the liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112 can be further improved.

Fig. 9 is a schematic voltage driving diagram of another liquid crystal prism according to an embodiment of the present disclosure.

In one embodiment of the present application, the last second electrode 130Z of the first sub-prism 111, the at least one intermediate electrode 15, and the first second electrode 130A of the second sub-prism 112 are arranged along the first direction X, and the first voltage V1 on the last second electrode 130Z of the first sub-prism 111, the intermediate voltage Vt on the at least one intermediate electrode 15, and the second voltage V2 on the first second electrode 130A of the second sub-prism 112 are in a linear relationship, where the linear relationship refers to: the ratio of the voltage difference between any two adjacent electrodes to the distance between the two adjacent electrodes is the same.

For example, as shown in fig. 9, an intermediate electrode 15 is disposed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, and assuming that the distance between the intermediate electrode 15 and the last second electrode 130Z of the first sub-prism 111 is 2 μm and the distance between the intermediate electrode and the first second electrode 130A of the second sub-prism 112 is 4 μm, the first voltage V1 on the last second electrode 130Z of the first sub-prism 111 is 6V, the second voltage V2 on the first second electrode 130A of the second sub-prism 112 is 0V, and the intermediate voltage Vt on the intermediate electrode 15 is 4V.

Of course, when the at least one intermediate electrode 15 disposed between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 are arranged at equal intervals, the first voltage V1, the intermediate voltage Vt on the at least one intermediate electrode 15, and the second voltage V2 are in an arithmetic progression relationship.

The embodiment of the application is beneficial to ensuring the consistency of the gradient change of the electric field between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, and further is beneficial to ensuring the consistency of the gradient change of the optical phase at the adjacent positions of the first sub-prism 111 and the second sub-prism 112.

In one embodiment of the present application, the number of intermediate electrodes 15 between the first sub-prism 111 and the second sub-prism 112 is S1, and the number of second electrodes 130 in the first sub-prism 111 is S2, wherein S1. Ltoreq.0.2 (S1+S2). That is, the number of the intermediate electrodes 15 is not more than 20% of the total amount of the intermediate electrodes 15 and the second electrodes 130 in the first sub-prisms 111.

For example, as shown in fig. 5 and 6, the number of the second electrodes 130 in the first sub-prism 111 is 5, the number of the intermediate electrodes 15 between the first sub-prism 111 and the second sub-prism 112 is 1, and the number of the intermediate electrodes 15 is 1/6 of the total amount of the intermediate electrodes 15 and the second electrodes 130 in the first sub-prism 111.

Optionally, the number of second electrodes 130 in each sub-prism 11 is the same, and the number of second electrodes 130 in the second sub-prism 112 is also S2.

In this embodiment, the number of intermediate electrodes 15 between the same first sub-prism 111 and the second sub-prism 112 is set within a certain range, so that the distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is ensured to be larger, and meanwhile, the voltage on the intermediate electrode 15 can be prevented from greatly influencing the orientation of the liquid crystal molecules, which is beneficial to ensuring that the deflection of the liquid crystal molecules at each position is in a more ideal shape.

Fig. 10 is a schematic voltage driving diagram of another liquid crystal prism according to an embodiment of the present disclosure.

In one embodiment of the present application, in the same sub-prism 11, the minimum distance between each adjacent two second electrodes 130 is the same, and at least one intermediate electrode 15 is arranged at equal intervals between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112.

For example, as shown in fig. 10, in each sub-prism 11, the minimum distance between two adjacent second electrodes 130 may be D2.

The minimum distance between the last second electrode 130Z and the adjacent intermediate electrode 15 in the first sub-prism 111 is W1, w1=d2.

Fig. 10 only illustrates a case where one intermediate electrode 15 is provided between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112.

In this embodiment, the second electrode 130 and the intermediate electrode 15 may be arranged at equal intervals, which is beneficial to reducing the design difficulty of the liquid crystal prism 01 and simplifying the preparation process of the liquid crystal prism 01.

In this embodiment, any two adjacent sub-prisms 11 may be the adjacent first sub-prism 111 and second sub-prism 112.

For example, as shown in fig. 10, among three sub-prisms 11 sequentially adjacent in the first direction X, the sub-prism 11 at the left side and the sub-prism 11 at the middle position may be the adjacent first sub-prism 111 and second sub-prism 112, and the sub-prism 11 at the middle position and the sub-prism 11 at the right side may be the adjacent first sub-prism 111 and second sub-prism 112.

Fig. 11 is a schematic voltage driving diagram of another liquid crystal prism according to an embodiment of the present disclosure.

In one embodiment of the present application, the liquid crystal prism 01 includes a plurality of adjacent first sub-prisms 111 and second sub-prisms 112. Wherein the number of intermediate electrodes 15 between at least partially adjacent first sub-prisms 111 and second sub-prisms 112 is different.

For example, as shown in fig. 11, among three sub-prisms 11 sequentially adjacent in the first direction X, the sub-prism 11 on the left side and the sub-prism 11 on the middle position may constitute a first sub-prism 111 and a second sub-prism 112 adjacent to each other, and the sub-prism 11 on the middle position and the sub-prism 11 on the right side may constitute a first sub-prism 111 and a second sub-prism 112 adjacent to each other. An intermediate electrode 15 is arranged between the left side sub-prism 11 and the sub-prism 11 at the intermediate position, and two intermediate electrodes 15 are arranged between the sub-prism 11 at the intermediate position and the sub-prism 11 at the right side.

According to the embodiment of the application, the number of the intermediate electrodes 15 can be flexibly set according to the difference between the first voltage V1 on the last second electrode 130Z in the first sub-prism 111 and the second voltage V2 on the first second electrode 130A in the second sub-prism 112, which is beneficial to improving the design flexibility and the structural diversity of the liquid crystal prism 01.

The embodiment of the present application provides a display device 100, which includes the liquid crystal prism 01 and the display panel 02 provided in the above embodiment, where the liquid crystal prism 01 is located at one side of the light emitting surface of the display panel 02. The display device 100 provided in the embodiment of the present application may be a naked eye 3D display device, and in an exemplary embodiment, the display device 100 provided in the embodiment of the present application may be an electronic device such as a mobile phone, a computer, a television, a vehicle-mounted display, and the like.

In the display device 100, the minimum distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is set to be greater than the minimum distance between two adjacent second electrodes 130 in the first sub-prism 111, i.e. the distance between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 is set to be greater, so that the strength of the transverse electric field between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112 can be reduced, which is beneficial to improving the problem of reverse deflection of the liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112, thereby being beneficial to improving the display quality of the display device 100.

The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a liquid crystal prism, its characterized in that includes relative first base plate and the second base plate that sets up, first base plate with be provided with a plurality of sub-prisms of arranging along first direction between the second base plate, sub-prism includes:

a first electrode disposed on the first substrate;

the second electrode group is arranged on the second substrate and comprises a plurality of second electrodes which are arranged along the first direction, and the second electrodes comprise first second electrodes and last second electrodes;

a liquid crystal layer between the first electrode and the second electrode group;

the plurality of sub-prisms comprise a first sub-prism and a second sub-prism which are adjacent to each other, and the direction of the first sub-prism pointing to the second sub-prism is the same as the direction of the first second electrode pointing to the last second electrode in the same sub-prism;

in the working state of the liquid crystal prism, in the first sub-prism and the second sub-prism, along the direction that the first second electrode points to the last second electrode, the voltage on each second electrode is gradually increased, and the voltage on the last second electrode in the first sub-prism is larger than the voltage on the first second electrode in the second sub-prism;

2. The liquid crystal prism of claim 1, wherein a minimum distance between two adjacent second electrodes in the second sub-prism is D3, d2=d3.

3. The liquid crystal prism according to claim 1, wherein at least one intermediate electrode is arranged between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism, the intermediate electrode and the second electrode being arranged along the first direction;

in the working state of the liquid crystal prism, the voltage of the last second electrode in the first sub-prism is a first voltage, the voltage of the first second electrode in the second sub-prism is a second voltage, the voltage of the middle electrode is a middle voltage, and the middle voltage is smaller than the first voltage and larger than the second voltage.

4. A liquid crystal prism according to claim 3, wherein the first voltage, the intermediate voltage on at least one of the intermediate electrodes and the second voltage are in a linear relationship.

5. A liquid crystal prism according to claim 3, wherein one of said intermediate electrodes is included between said first sub-prism and said second sub-prism, and a minimum distance between said intermediate electrode and a last second electrode in said first sub-prism is W1 and a minimum distance between said intermediate electrode and a first second electrode in said second sub-prism is W2 along said first direction; wherein w1=w2.

6. The liquid crystal prism of claim 5, wherein the intermediate voltage is an arithmetic average of the first voltage and the second voltage.

7. A liquid crystal prism according to claim 3, wherein said first sub-prism and said second sub-prism comprise at least two of said intermediate electrodes therebetween, each of said intermediate electrodes being equally spaced between said first sub-prism and said second sub-prism along said first direction.

8. A liquid crystal prism according to claim 3, wherein the number of intermediate electrodes between adjacent first and second sub-prisms is S1, S1 is ∈2.

9. A liquid crystal prism according to claim 3, wherein the number of intermediate electrodes between the first sub-prism and the second sub-prism is S1, and the number of second electrodes in the first sub-prism is S2; wherein S1 is less than or equal to 0.2 (S1+S2).

10. A liquid crystal prism according to claim 3, wherein in the same sub-prism, the minimum distance between each two adjacent second electrodes is the same, and the at least one intermediate electrode is arranged at equal intervals between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism;

the minimum distance between the last second electrode and the adjacent intermediate electrode in the first sub-prism is W1, w1=d2.

11. A liquid crystal prism according to claim 3, wherein said liquid crystal prism comprises a plurality of adjacent said first sub-prisms and said second sub-prisms;

DD225490I

wherein the number of intermediate electrodes between at least partially adjacent first and second sub-prisms is different.

12. A display device comprising the liquid crystal prism according to any one of claims 1 to 11 and a display panel, wherein the liquid crystal prism is located on one side of a light-emitting surface of the display panel.