A liquid crystal prism and a display device

Abstract

An embodiment of the present application provides a liquid crystal prism and a display device. The liquid crystal prism includes a plurality of sub-prisms. Each sub-prism includes a first electrode, a second electrode group, and a liquid crystal layer located between the first electrode and the second electrode group. The second electrode group includes a plurality of second electrodes, among which there are a first second electrode and a last second electrode. Among the plurality of sub-prisms, there are adjacent first sub-prism and second sub-prism. The direction from the first sub-prism to the second sub-prism is the same as the direction from the first second electrode 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 greater than the minimum distance between two adjacent second electrodes in the first sub-prism. The present application can reduce the lateral electric field strength between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism, and improve the problem of reverse deflection of liquid crystal molecules at the adjacent position of the first sub-prism and the second sub-prism.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a liquid crystal prism and a display device.

Background Art

[0002] In recent years, with the continuous popularization of intelligent display products and the intensification of competition, the naked-eye 3D display device has become a key research area in the field of display technologies. Existing naked-eye 3D display devices usually consist of a display panel and a liquid crystal prism. The liquid crystal prism is arranged on the light-emitting surface of the display panel in a certain manner. The light in the display panel passes through the liquid crystal prism, and after image splitting by the liquid crystal prism, different visual images can be seen by the human eyes, creating a sense of a stereoscopic image.

[0003] However, in existing liquid crystal prisms, the liquid crystals in the liquid crystal prism often have the problem of reverse deflection, resulting in problems such as stray light and reduced contrast in the naked-eye 3D display device made with the liquid crystal prism, affecting the display quality.

Summary of the Invention

[0004] In view of this, embodiments of this application provide a liquid crystal prism and a display device to solve the above problems.

[0005] In a first aspect, an embodiment of this application provides a liquid crystal prism, including a first substrate and a second substrate arranged opposite to each other. A plurality of sub-prisms arranged along a first direction are provided between the first substrate and the second substrate. Each sub-prism includes a first electrode, a second electrode group, and a liquid crystal layer located 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 among the plurality of second electrodes, there are a first second electrode and a last second electrode; among the plurality of sub-prisms, there are adjacent first sub-prism and second sub-prism. The direction from the first sub-prism to the second sub-prism is the same as the direction from the first second electrode 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 from the first second electrode to the last second electrode, the voltage on each second electrode gradually increases, and the voltage on the last second electrode in the first sub-prism is greater than the voltage on the first second electrode in the second sub-prism;

[0006] Wherein, 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, the minimum distance between two adjacent second electrodes in the first sub-prism is D2, and D1 > D2.

[0007] In a second aspect, an embodiment of this application provides a display device, including the liquid crystal prism provided in the first aspect and a display panel. The liquid crystal prism is located on one side of the light-emitting surface of the display panel.

[0008] In the embodiments of the present application, 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 relatively large, which can reduce the intensity of the lateral electric field between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism, facilitating the improvement of the reverse deflection problem of the liquid crystal molecules at the adjacent positions of the first sub-prism and the second sub-prism, and thus being conducive to improving the display quality of the naked-eye 3D display device using the liquid crystal prism.

Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a voltage drive schematic diagram of a liquid crystal prism in the prior art;

[0011] Figure 2 It is a schematic diagram of a liquid crystal prism provided by the embodiments of the present application;

[0012] Figure 3 It is a voltage drive schematic diagram of a liquid crystal prism provided by the embodiments of the present application;

[0013] Figure 4 It is a voltage drive schematic diagram of another liquid crystal prism provided by the embodiments of the present application;

[0014] Figure 5 It is a schematic diagram of another liquid crystal prism provided by the embodiments of the present application;

[0015] Figure 6 For Figure 5 a voltage drive schematic diagram of the shown liquid crystal prism;

[0016] Figure 7 It is a schematic diagram of another liquid crystal prism provided by the embodiments of the present application;

[0017] Figure 8 For Figure 7 a voltage drive schematic diagram of the shown liquid crystal prism;

[0018] Figure 9 It is a voltage drive schematic diagram of another liquid crystal prism provided by the embodiments of the present application;

[0019] Figure 10Another voltage driving schematic diagram of the liquid crystal prism provided by the embodiment of the present application;

[0020] Figure 11 Another voltage driving schematic diagram of the liquid crystal prism provided by the embodiment of the present application;

[0021] Figure 12 A schematic diagram of a display device provided by the embodiment of the present application.

Specific Embodiments

[0022] In order to better understand the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0024] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0025] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0026] In the description of this specification, it should be understood that the words such as "substantially", "approximately", "about", "around", "roughly", "generally" used in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0027] It should be understood that although the terms first, second, etc. may be used in the 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 the electrodes, sub-prisms, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first electrode may also be referred to as the second electrode, and similarly, the second electrode may also be referred to as the first electrode.

[0028] Figure 1 A voltage driving schematic diagram of a liquid crystal prism in the prior art.

[0029] In the field of naked-eye 3D display technology, a liquid crystal prism is usually disposed on the light-emitting surface of a display panel. 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 located between the plurality of strip electrodes and the upper electrode. When the naked-eye 3D display device operates, a driving voltage is applied to the strip electrode group formed by the upper electrode and the plurality of strip electrodes to form a gradient electric field, so that the rotation directions of the liquid crystals between the upper electrode and the strip electrode group are different, thereby enabling the liquid crystal prism to function as a grating, enabling the two eyes of a person to see different visual images, and realizing naked-eye 3D display. Among them, the liquid crystal prism includes a plurality of strip electrode groups.

[0030] As Figure 1 shown, in the existing liquid crystal prism 01', the liquid crystal prism 01' includes a first substrate 10' and a second substrate 20' which are disposed opposite to each other. A plurality of sub-prisms 11' arranged along a first direction X' are disposed between the first substrate 10' and the second substrate 20'. The sub-prism 11' includes 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 in the figure) located between the first electrode 12' and the second electrode group 13'.

[0031] Among them, the second electrode group 13' includes a plurality of second electrodes 130'. The plurality of second electrodes 130' include a first second electrode 130A' and a last second electrode 130Z'. In each sub-prism 11', the direction from the first second electrode 130A' to the last second electrode 130Z' is the same, and in the liquid crystal prism 01', the distance between any two adjacent second electrodes 130' is the same.

[0032] The inventor of the present application has found through research that in the existing liquid crystal prism 01', when the difference between the voltage V (as shown by the black dots in the figure) on the last second electrode 130Z' and the voltage V (as shown by the black dots in the figure) on the first second electrode 130A' in the second electrode group 13' is relatively large, a relatively large lateral electric field will be generated between two adjacent sub-prisms 11', resulting in reverse deflection of the liquid crystal molecules at the adjacent positions of the two adjacent sub-prisms 11', and the corresponding optical phase cannot be obtained, thereby causing problems such as stray light and low contrast in the naked-eye 3D display device using the liquid crystal prism 01', and affecting the display quality.

[0033] The inventor of the present application considered that the reverse deflection of the liquid crystal molecules is caused by the lateral electric field, so reducing the intensity of the lateral electric field became a solution.

[0034] The applicant of this case has provided a solution for the problems existing in the prior art through careful and in-depth research.

[0035] Figure 2Schematic diagram of a liquid crystal prism provided by an embodiment of the present application Figure 3 Schematic diagram of voltage driving of a liquid crystal prism provided by an embodiment of the present application Figure 4 Schematic diagram of voltage driving of another liquid crystal prism provided by an embodiment of the present application

[0036] An embodiment of the present application provides a liquid crystal prism 01, as Figure 2 shown, including a first substrate 10 and a second substrate 20 arranged opposite to each other. A plurality of sub-prisms 11 arranged along a first direction X are provided 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.

[0037] Each sub-prism 11 includes a first electrode 12, a second electrode group 13, and a liquid crystal layer 14 located between the first electrode 12 and the second electrode group 13. The first electrode 12 is provided on the first substrate 10, and the second electrode group 13 is provided on the second substrate 20. Of course, the first electrode 12 is located on the side of the first substrate 10 facing the second substrate 20, and the second electrode group 13 is located on the side of the second substrate 20 facing the first substrate 10.

[0038] Among them, the first electrode 12 can be provided on the entire surface of the first substrate 10. The second electrode group 13 includes a plurality of second electrodes 130 arranged along the first direction X. Among the plurality of second electrodes 130, there are a first second electrode 130A and a last second electrode 130Z.

[0039] That is to say, the second electrode group 13 can include Z second electrodes 130, Z≥2; the second electrode group 13 includes the first electrode to the Zth electrode arranged in sequence. The first electrode of the second electrode group 13 is the first second electrode 130 arranged at the first position, the first second electrode 130 arranged at the first position is the first second electrode 130A, the Zth electrode of the second electrode group 13 is the last second electrode 130 arranged at the last position, and the last second electrode 130 arranged at the last position is the last second electrode 130Z.

[0040] When the liquid crystal prism 01 works, a driving voltage is applied to the first electrode 12 and each second electrode 130 of the second electrode group 13 to form a gradient electric field, so that the rotation directions of the liquid crystal molecules in the liquid crystal layer 14 are different, forming a progressive change in the orientation of the liquid crystal molecules and the corresponding optical phase gradient observed, so that the liquid crystal prism 01 has the function of a grating and realizes naked-eye 3D display.

[0041] Among the multiple sub - prisms 11, there are adjacent first sub - prism 111 and second sub - prism 112. 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 can be close to each other. 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 can 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 different sub - prisms 11, the direction in which the first second electrode 130A points to the last second electrode 130Z can be the same.

[0042] The driving voltages applied to the second electrodes 130 of the first sub - prism 111 can be similar to the driving voltages applied to the second electrodes 130 of the second sub - prism 112. In some embodiments, the same voltage can be applied to two corresponding second electrodes 130 of the first sub - prism 111 and the second sub - prism 112 (such as the first second electrode 130A of the first sub - prism 111 and the first second electrode 130A of the second sub - prism 112, the last second electrode 130Z of the first sub - prism 111 and the last second electrode 130Z of the second sub - prism 112, etc.).

[0043] In the working state of the liquid crystal prism 01, as Figure 3 shown, 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 gradually increases, 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.

[0044] Of course, it can also be as Figure 4 shown, 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 can also gradually decrease, and the voltage on the last second electrode 130Z in the first sub - prism 111 is less than the voltage on the first second electrode 130A in the second sub - prism 112.

[0045] It can be understood that when Figure 4 the direction in which the first second electrode 130A points to the last second electrode 130Z in Figure 3 is exactly opposite to the direction in which the first second electrode 130A points to the last second electrode 130Z in Figure 4 the first sub - prism 111 in Figure 3the second sub - prism 112 in Figure 4 the second sub - prism 112 in can be equivalent to Figure 3 the first sub - prism 111 in

[0046] That is to say, among the adjacent first sub - prism 111 and second sub - prism 112, there must be a direction that can be used as the direction from the first second electrode 130A to the last second electrode 130Z, so that the voltage on each second electrode 130 gradually increases, 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.

[0047] Among them, as Figure 2 shown, 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, and D1 > D2. Of course, in the same first sub - prism 111, the second electrodes 130 in the second electrode group 13 can be arranged at equal intervals.

[0048] In the embodiment of the present application, setting 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 to be greater than the minimum distance between two adjacent second electrodes 130 in the first sub - prism 111, that is, setting 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 to be larger, can reduce the intensity of the lateral 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, which is beneficial to improving the reverse deflection problem of the liquid crystal molecules at the adjacent position of the first sub - prism 111 and the second sub - prism 112, and thus is beneficial to improving the display quality of the naked - eye 3D display device using the liquid crystal prism 01.

[0049] Please continue to refer to Figure 2 , in an embodiment of the present application, the minimum distance between two adjacent second electrodes 130 in the second sub - prism 112 is D3, and D2 = D3. Of course, in the same second sub - prism 112, the second electrodes 130 in the second electrode group 13 can be arranged at equal intervals.

[0050] It should be noted that D2 = D3 means that D2 and D3 are the same within a certain error range, and this error can be caused by the error of the manufacturing process or the measuring tool. Of course, the equal - interval arrangement of the second electrodes 130 in the second electrode group 13 is also an equal - interval arrangement within a certain error range.

[0051] It can be known 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 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 also greater than the minimum distance D3 between two adjacent second electrodes 130 in the second sub-prism 112.

[0052] In the embodiment of the present application, 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. While ensuring a relatively large 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, it is beneficial to achieve the same design for the first sub-prism 111 and the second sub-prism 112, thereby facilitating the reduction of the design difficulty and driving difficulty of the liquid crystal prism 01.

[0053] Figure 5 FIG. is a schematic diagram of another liquid crystal prism provided by the embodiment of the present application. Figure 6 is Figure 5 a voltage driving schematic diagram of the shown liquid crystal prism.

[0054] In an embodiment of the present application, as Figure 5 shown, at least 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. 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 can be arranged in the same layer. Of course, the intermediate electrode 15 can have the same material, size, and structure as the second electrode 130.

[0055] Optionally, the number of intermediate electrodes 15 between the adjacent first sub-prism 111 and the second sub-prism 112 is S1, and S1 ≤ 2. That is to say, one or two intermediate electrodes 15 can be provided between the adjacent first sub-prism 111 and the second sub-prism 112 to avoid that too many intermediate electrodes 15 have a greater impact on the orientation of liquid crystal molecules, which is beneficial to ensuring that the liquid crystal molecules in the liquid crystal prism are in an ideal morphology.

[0056] It should be noted that Figure 5 only shows the case where one intermediate electrode 15 is provided between the adjacent first sub-prism 111 and the second sub-prism 112.

[0057] In the working state of the liquid crystal prism 01, as Figure 6As shown in the figure, 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, and the voltage on the intermediate electrode 15 is the intermediate voltage Vt. The intermediate voltage Vt is less than the first voltage V1 and greater than the second voltage V2. That is, V2 < Vt < V1.

[0058] Among them, when there are multiple intermediate electrodes 15 arranged 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 voltage Vt on each intermediate electrode 15 is greater than the second voltage V2 on the first second electrode 130A in the second sub-prism 112 and less than the first voltage V1 on the last second electrode 130Z in the first sub-prism 111. Of course, the intermediate voltages Vt on each intermediate electrode 15 can be different from each other.

[0059] From the above, in the first sub-prism 111 and the second sub-prism 112, along the direction from the first second electrode 130A to the last second electrode 130Z, the voltage on each second electrode 130 gradually increases, 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. It can be seen that in the first sub-prism 111, from the first second electrode 130A to the last second electrode 130Z, the voltage on each second electrode 130 gradually increases to the first voltage V1. Of course, as Figure 6 shown, the voltage on the first second electrode 130A in the first sub-prism 111 can be the second voltage V2.

[0060] In the second sub-prism 112, from the first second electrode 130A to the last second electrode 130Z, the voltage on each second electrode 130 gradually increases starting from the second voltage V2. Of course, as Figure 6 shown, the voltage on the last second electrode 130Z in the second sub-prism 112 can be the first voltage V1.

[0061] 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 change, that is, the second electrodes 130 included in the first sub-prism 111 and the second sub-prism 112 may not be the same in different frames, and the second electrodes 130 included in the first sub-prism 111 and the second sub-prism 112 are not fixed. In different frame images, the intermediate electrode 15 can be used as the second electrode 130, and the second electrode 130 can also be used as the intermediate electrode 15.

[0062] In the embodiment of the present application, at least 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, which is beneficial to ensuring that in any frame of the display device, there is at least one intermediate electrode 15 between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112, thereby facilitating ensuring a relatively large 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.

[0063] Meanwhile, by setting the intermediate voltage Vt on the intermediate electrode 15 to be greater than the second voltage V2 on the first second electrode 130A in the second sub-prism 112 and less than the first voltage V1 on the last second electrode 130Z in the first sub-prism 111, it is possible to prevent the intermediate electrode 15 from maintaining the voltage of the previous frame, which is beneficial to ensuring that the lateral 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, thereby facilitating 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 and enhancing the display quality of the naked-eye 3D display device using the liquid crystal prism 01.

[0064] In one implementation manner of the embodiment of the present application, please continue to refer to Figure 5 , there is one intermediate electrode 15 between the first sub-prism 111 and the second sub-prism 112. Along the first direction X, the minimum distance between the intermediate electrode 15 and the last second electrode 130Z in the first sub-prism 111 is W1, and the minimum distance between the intermediate electrode 15 and the first second electrode 130A in the second sub-prism 112 is W2, where W1 = W2.

[0065] That is to say, when only one intermediate electrode 15 is provided between the first sub-prism 111 and the second sub-prism 112, the intermediate electrode 15 can 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.

[0066] Optionally, as Figure 5 shown, in the same sub-prism 11, the minimum distance between each adjacent two second electrodes 130 is the same, and W1 = W2 = D2 = D3. That is, the second electrodes 130 in the first sub-prism 111, the intermediate electrode 15, and the second electrodes 130 in the second sub-prism 112 can be arranged at equal intervals.

[0067] Furthermore, as Figure 6 shown, the intermediate voltage Vt on the intermediate electrode 15 is the arithmetic mean of the first voltage V1 and the second voltage V2.

[0068] This implementation method can ensure that the lateral electric field intensity between the intermediate 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 will not be too large, which is conducive to ensuring that the orientation of the liquid crystal molecules at the adjacent positions of the first sub-prism 111 and the second sub-prism 112 meets the requirements.

[0069] Figure 7 It is a schematic diagram of another liquid crystal prism provided by the embodiment of the present application. Figure 8 For Figure 7 a voltage driving schematic diagram of the shown liquid crystal prism.

[0070] In another implementation method of the embodiment of the present application, as Figure 7 shown, at least two intermediate electrodes 15 are included between the first sub-prism 111 and the second sub-prism 112. Along the first direction X, the intermediate electrodes 15 are equally spaced between the first sub-prism 111 and the second sub-prism 112. The minimum distance between two adjacent intermediate electrodes 15 can be the same as the distance between two adjacent second electrodes 130 in the same sub-prism 11.

[0071] It should be noted that Figure 7 only the case where two intermediate electrodes 15 are included between the first sub-prism 111 and the second sub-prism 112 is schematically shown.

[0072] In the working state of the liquid crystal prism 01, as Figure 8 shown, among the intermediate electrodes 15 between the first sub-prism 111 and the second sub-prism 112, the intermediate voltages Vt on each intermediate electrode 15 are different from each other, and the intermediate voltage Vt on the intermediate electrode 15 closer to the first sub-prism 111 is larger.

[0073] 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 form an arithmetic progression relationship.

[0074] This implementation method can further increase 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, which is thus conducive to further reducing the intensity of the lateral 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 conducive 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.

[0075] Figure 9 It is a voltage driving schematic diagram of another liquid crystal prism provided by the embodiment of the present application.

[0076] In an embodiment of the present application, the last second electrode 130Z of the first sub - prism 111, 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. The first voltage V1 on the last second electrode 130Z of the first sub - prism 111, the intermediate voltage Vt on at least one intermediate electrode 15, and the second voltage V2 on the first second electrode 130A of the second sub - prism 112 have a linear relationship. Here, the linear relationship means that for these electrodes, the ratio of the voltage difference between any two adjacent electrodes to the distance between these two adjacent electrodes is the same.

[0077] For example, as Figure 9 shown, there is one intermediate electrode 15 arranged between the last second electrode 130Z of the first sub - prism 111 and the first second electrode 130A of the second sub - prism 112. Assuming the distance between the intermediate electrode 15 and the last second electrode 130Z of the first sub - prism 111 is 2μm, and the distance between the intermediate electrode 15 and the first second electrode 130A of the second sub - prism 112 is 4μm, the first voltage V1 on the last second electrode 130Z of the first sub - prism 111 is 6V, and the second voltage V2 on the first second electrode 130A of the second sub - prism 112 is 0V, then the intermediate voltage Vt on this intermediate electrode 15 is 4V.

[0078] Certainly, when at least one intermediate electrode 15 arranged 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 arranged at equal intervals, the first voltage V1, the intermediate voltage Vt on at least one intermediate electrode 15, and the second voltage V2 have an arithmetic - progression relationship.

[0079] The embodiment of the present application is beneficial to ensuring the consistency of the change in the electric - field gradient 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 thus is beneficial to ensuring the consistency of the change in the optical - phase gradient at the adjacent position between the first sub - prism 111 and the second sub - prism 112.

[0080] In an embodiment of the present application, the number of intermediate electrodes 15 located 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, where S1 ≤ 0.2(S1 + S2). That is to say, the number of intermediate electrodes 15 does not exceed 20% of the total number of intermediate electrodes 15 and second electrodes 130 in the first sub - prism 111.

[0081] For example, as Figure 5 and Figure 6As shown, 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.

[0082] Optionally, the number of the second electrodes 130 in each sub-prism 11 is the same, and the number of the second electrodes 130 in the second sub-prism 112 is also S2.

[0083] In the embodiment of the present application, setting the number of the intermediate electrodes 15 between the same first sub-prism 111 and the second sub-prism 112 within a certain range can, while ensuring a large 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, avoid a large influence of the voltage on the intermediate electrode 15 on 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 an ideal morphology.

[0084] Figure 10 It is a voltage driving schematic diagram of another liquid crystal prism provided by the embodiment of the present application.

[0085] In an 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.

[0086] For example, as Figure 10 shown, in each sub-prism 11, the minimum distance between adjacent two second electrodes 130 can be D2.

[0087] Among them, the minimum distance between the last second electrode 130Z in the first sub-prism 111 and the adjacent intermediate electrode 15 is W1, and W1 = D2.

[0088] It should be noted that Figure 10 only shows the case where one intermediate electrode 15 is arranged between the last second electrode 130Z of the first sub-prism 111 and the first second electrode 130A of the second sub-prism 112.

[0089] In the embodiment of the present application, the second electrodes 130 and the intermediate electrodes 15 can 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.

[0090] It should be noted that in the embodiment of the present application, any two adjacent sub-prisms 11 can be the adjacent first sub-prism 111 and the second sub-prism 112.

[0091] For example, as Figure 10 shown, among three adjacent sub - prisms 11 along the first direction X in sequence, the left - hand sub - prism 11 and the sub - prism 11 in the middle position can be adjacent first sub - prism 111 and second sub - prism 112, and the sub - prism 11 in the middle position and the sub - prism 11 in the right - hand position can also be adjacent first sub - prism 111 and second sub - prism 112.

[0092] Figure 11 It is a voltage - driving schematic diagram of another liquid - crystal prism provided by an embodiment of the present application.

[0093] In an embodiment of the present application, the liquid - crystal prism 01 includes a plurality of adjacent first sub - prisms 111 and second sub - prisms 112. Among them, the number of intermediate electrodes 15 between at least some adjacent first sub - prisms 111 and second sub - prisms 112 is different.

[0094] For example, as Figure 11 shown, among three adjacent sub - prisms 11 along the first direction X in sequence, the left - hand sub - prism 11 and the sub - prism 11 in the middle position form adjacent first sub - prism 111 and second sub - prism 112, and the sub - prism 11 in the middle position and the sub - prism 11 in the right - hand position can also form adjacent first sub - prism 111 and second sub - prism 112. One intermediate electrode 15 is provided between the left - hand sub - prism 11 and the sub - prism 11 in the middle position, and two intermediate electrodes 15 are provided between the sub - prism 11 in the middle position and the sub - prism 11 in the right - hand position.

[0095] The embodiment of the present application can flexibly set the number of intermediate electrodes 15 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 of the liquid - crystal prism 01 and the diversity of the structure.

[0096] Figure 12 It is a schematic diagram of a display device provided by an embodiment of the present application.

[0097] The embodiment of the present application provides a display device 100, which includes the liquid - crystal prism 01 and a display panel 02 as provided in the above - mentioned embodiment. The liquid - crystal prism 01 is located on one side of the light - emitting surface of the display panel 02. The display device 100 provided by the embodiment of the present application can be a naked - eye 3D display device. Exemplarily, the display device 100 provided by the embodiment of the present application can be an electronic device such as a mobile phone, a computer, a television, a vehicle - mounted display, etc.

[0098] 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. That is, 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 relatively large, so that the intensity of the lateral 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, and thus is beneficial to improving the display quality of the display device 100.

[0099] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A liquid crystal prism, characterized in that, It includes a first substrate and a second substrate which are oppositely arranged, and a plurality of sub-prisms arranged along a first direction are provided between the first substrate and the second substrate. The sub-prisms include: A first electrode provided on the first substrate; A second electrode group provided on the second substrate. The second electrode group includes a plurality of second electrodes arranged along the first direction, and among the plurality of second electrodes, there are a first second electrode and a last second electrode; A liquid crystal layer located between the first electrode and the second electrode group; Among the plurality of sub-prisms, there are adjacent first sub-prism and second sub-prism. The direction in which the first sub-prism points to the second sub-prism is the same as the direction in which the first second electrode points 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 from the first second electrode to the last second electrode, the voltage on each second electrode gradually increases, and the voltage on the last second electrode in the first sub-prism is greater than the voltage on the first second electrode in the second sub-prism; Wherein, 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, and D1 > D2; At least one intermediate electrode is provided between the last second electrode of the first sub-prism and the first second electrode of the second sub-prism, and the intermediate electrode and the second electrodes are arranged along the first direction; Among the last second electrode of the first sub-prism, at least one intermediate electrode and the first second electrode of the second sub-prism, the ratio of the voltage difference between any two adjacent ones to the distance between the two adjacent ones is the same.

2. The liquid crystal prism according to claim 1, characterized in that, The minimum distance between two adjacent second electrodes in the second sub-prism is D3, and D2 = D3.

3. The liquid crystal prism according to claim 1, wherein 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, and the voltage of the intermediate electrode is an intermediate voltage. The intermediate voltage is less than the first voltage and greater than the second voltage.

4. The liquid crystal prism according to claim 3, wherein, There is one intermediate electrode between the first sub-prism and the second sub-prism. Along the first direction, the minimum distance between the intermediate electrode and the last second electrode in the first sub-prism is W1, and the minimum distance between the intermediate electrode and the first second electrode in the second sub-prism is W2; wherein, W1 = W2.

5. The liquid crystal prism according to claim 4, wherein The intermediate voltage is the arithmetic mean of the first voltage and the second voltage.

6. The liquid crystal prism according to claim 3, wherein There are at least two intermediate electrodes between the first sub-prism and the second sub-prism. Along the first direction, the intermediate electrodes are equally spaced between the first sub-prism and the second sub-prism.

7. The liquid crystal prism according to claim 3, wherein, The number of intermediate electrodes between the adjacent first sub-prism and second sub-prism is S1, and S1 ≤ 2.

8. The liquid crystal prism according to claim 3, characterized in that, The number of the intermediate electrodes between the first sub-prism and the second sub-prism is S1, and the number of the second electrodes in the first sub-prism is S2; wherein, S1 ≤ 0.2(S1 + S2).

9. The liquid crystal prism according to claim 3, wherein In the same sub-prism, the minimum distance between every 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; Wherein, the minimum distance between the last second electrode in the first sub-prism and the adjacent intermediate electrode is W1, and W1 = D2.

10. The liquid crystal prism according to claim 3, characterized in that, The liquid crystal prism includes a plurality of adjacent first sub-prisms and second sub-prisms; Wherein, the number of the intermediate electrodes between at least some adjacent first sub-prisms and second sub-prisms is different.

11. A display device, characterized in that, Comprising the liquid crystal prism according to any one of claims 1-10 and a display panel, the liquid crystal prism is located on one side of the light-emitting surface of the display panel.

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