Liquid crystal prism and display device

Abstract

This invention discloses a liquid crystal prism and a display device. The liquid crystal prism includes an optical region and a non-optical region. The non-optical region includes a first frame region and a bonding pad. The liquid crystal prism includes a substrate, multiple electrode groups, and a lead group. The electrode groups include multiple driving electrodes located in both the optical and non-optical regions. The lead group is located in the non-optical region and includes multiple leads, with the driving electrodes and leads disposed on different layers. The liquid crystal prism also includes an auxiliary lead group, at least part of which is located in the first frame region and includes multiple auxiliary leads electrically connecting the leads to the bonding pad. The technical solution of this invention, by providing an auxiliary lead group in the liquid crystal prism, allows for flexible connection positions between the auxiliary leads and the bonding pad, enabling flexible placement of the bonding pad. For example, the bonding pad can be placed in the middle of the first frame region, reducing the pressure risk when the bonding pad is subsequently connected to a flexible circuit board via thermoforming.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a liquid crystal prism and a display device. Background Technology

[0002] Current 3D (Three Dimensional) display devices utilize a periodic electric field generated within a liquid crystal cell, causing a liquid crystal prism to form an equivalent prismatic prism. This prism then performs light-splitting, allowing the 3D display device to operate in 3D mode, where the human eye can see 3D images. By switching the voltage of the driving electrodes in the liquid crystal prism, preventing it from forming an equivalent prismatic prism, the prism loses its light-splitting function, causing the 3D display device to operate in 2D (Two Dimensional) mode, where the human eye can see 2D images. In related technologies, the position of the bonding pads for the liquid crystal prism is fixed. Summary of the Invention

[0003] The present invention provides a liquid crystal prism and a display device to improve the flexibility of the position of the bonding pad.

[0004] According to one aspect of the present invention, a liquid crystal prism is provided, including an optical region and a non-optical region, wherein the non-optical region is located around the optical region and includes a first frame region located on one side of the optical region and provided with a bonding pad. The liquid crystal prism includes a substrate, multiple electrode groups and lead groups. The multiple electrode groups and lead groups are located on one side of the substrate. The electrode groups include multiple driving electrodes, which are located in the optical region and the non-optical region. The lead groups are located in the non-optical region and include multiple leads. The driving electrodes and leads are disposed in different layers. One driving electrode is electrically connected to at least one lead, and different driving electrodes are electrically connected to different leads. The liquid crystal prism also includes an auxiliary lead assembly, at least part of which is located in the first frame area and includes multiple auxiliary leads electrically connected to the lead and bonding pad.

[0005] According to another aspect of the present invention, a display device is provided, comprising a display panel and a liquid crystal prism.

[0006] The technical solution of this invention provides that by setting an auxiliary lead group in the liquid crystal prism, the auxiliary lead in the auxiliary lead group is used as the extension line of the lead. The lead is connected to the bonding pad through the auxiliary lead. Since the connection position between the auxiliary lead and the bonding pad is flexible, the setting position of the bonding pad is also flexible. For example, the bonding pad can be set in the middle position of the first frame area, which reduces the pressure risk when the bonding pad is subsequently connected to the flexible circuit board by hot pressing.

[0007] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of a liquid crystal prism structure; Figure 2 This is a schematic diagram of the structure of the first liquid crystal prism provided according to an embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view at point 61; Figure 4 yes Figure 2 An enlarged view at point A; Figure 5 yes Figure 4 A schematic diagram of the first type of cross section along the middle AA'; Figure 6 yes Figure 4 A schematic diagram of the second type of cross section along the middle AA'; Figure 7 This is a schematic diagram of the structure of a second type of liquid crystal prism provided according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a third type of liquid crystal prism provided according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the fourth type of liquid crystal prism provided in the embodiments of the present invention; Figure 10 yes Figure 9 A schematic cross-sectional view of the middle edge BB'; Figure 11 This is a schematic diagram of the structure of the fifth type of liquid crystal prism provided in the embodiments of the present invention; Figure 12 This is a schematic diagram of the structure of the sixth type of liquid crystal prism provided in the embodiments of the present invention; Figure 13 This is a schematic diagram of the structure of the seventh type of liquid crystal prism provided in the embodiments of the present invention; Figure 14 This is a schematic diagram of the structure of the eighth type of liquid crystal prism provided in the embodiments of the present invention; Figure 15 yes Figure 2 The first enlarged diagram at point B; Figure 16 yes Figure 2 The second enlarged diagram at point B; Figure 17 This is a schematic diagram of the structure of the ninth type of liquid crystal prism provided in the embodiments of the present invention; Figure 18 yes Figure 17 Enlarged view at point C; Figure 19 yes Figure 17 An enlarged view at point D; Figure 20 This is a schematic diagram of the structure of the tenth liquid crystal prism provided in the embodiments of the present invention; Figure 21 yes Figure 20 An enlarged view at point E; Figure 22 This is a schematic diagram of the structure of the eleventh liquid crystal prism provided in the embodiments of the present invention; Figure 23 yes Figure 22 Enlarged diagram at point F; Figure 24 This is a schematic diagram of the structure of the twelfth type of liquid crystal prism provided in the embodiments of the present invention; Figure 25 yes Figure 24 A magnified view at point G; Figure 26 This is a schematic diagram of the thirteenth liquid crystal prism provided in the embodiment of the present invention; Figure 27 It is along Figure 26 A cross-sectional view of CC' in the middle; Figure 28 This is a schematic diagram of the structure of a display device according to an embodiment of the present invention; Figure 29 This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention. Detailed Implementation

[0010] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0011] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0012] Figure 1 This is a schematic diagram of a liquid crystal prism structure, such as... Figure 1 As shown, the lead 01 in the liquid crystal prism can be electrically connected to the driving electrode 02. Lead 01 is used to lead out the driving electrode 02 and connect it to the flexible printed circuit board 03. The flexible printed circuit board 03 (FPC) is electrically connected to the driving circuit of the driving electrode 02. Lead 01 is typically made of a single layer of metal, making it impossible to achieve a cross-layout between leads 01. Figure 1 The bonding pad is not shown in the diagram. It is positioned on the substrate of the liquid crystal prism, and the flexible circuit board 03 is electrically connected to it. Moving the flexible circuit board 03 to the center of the lower frame would require increasing the distance of the lead 01, leading to increased resistance. Typically, the flexible circuit board 03 is bonded at a corner of the liquid crystal prism substrate. With the bonding pad's position fixed, the pressure on the liquid crystal prism substrate is concentrated at this corner when the flexible circuit board is bonded to it, resulting in uneven pressure and a risk of pressure bonding during the bonding of the flexible circuit board 03.

[0013] This invention provides a liquid crystal prism. Figure 2 This is a schematic diagram of the structure of the first liquid crystal prism provided according to an embodiment of the present invention. Figure 3 yes Figure 2 An enlarged diagram at position 61. Figure 4 yes Figure 2 An enlarged diagram at point A. Figure 5 yes Figure 4 A schematic diagram of the first cross-section along the middle AA'. Combined with... Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the liquid crystal prism includes an optical region AA and a non-optical region NA. The non-optical region NA is located around the optical region AA and includes a first frame region 11. The first frame region 11 is located on one side of the optical region AA and is provided with a bonding pad 6. The liquid crystal prism includes a substrate 2, multiple electrode groups 3 and lead groups 4. The multiple electrode groups 3 and lead groups 4 are located on one side of the substrate 2. The electrode group 3 includes multiple driving electrodes 30 (this embodiment illustrates an example of an electrode group 3 including 4 driving electrodes 30, and is not a limitation on the number of driving electrodes 30. For example, the electrode group 3 may include 6-30 driving electrodes 30). The driving electrodes 30 are located in the optical region AA and the non-optical region NA. The same driving electrode 30 is located in both the optical region AA and the non-optical region NA. The lead group 4 is located in the non-optical region NA and includes multiple leads 40. The driving electrodes 30 and the leads 40 are disposed in different layers. One driving electrode 30 is electrically connected to at least one lead 40, and different driving electrodes 30 are electrically connected to different leads 40; the liquid crystal prism also includes an auxiliary lead group 5, at least a portion of which is located in the first frame region 11, the auxiliary lead group 5 includes multiple auxiliary leads 50, and the auxiliary leads 50 are electrically connected to the leads 40 and the bonding pads 6.

[0014] In this liquid crystal prism, the alignment of liquid crystal molecules is controlled by an electric field, thereby altering the light propagation path. The optical region AA of the liquid crystal prism can be the region directly involved in light modulation, while the non-optical region NA can be the region not directly involved in light modulation. The optical region AA includes regions with optical functions, such as beam splitting. The non-optical region NA includes regions without optical functions; electrical components such as leads 40, rather than optical components, can be placed in the non-optical region NA. For example, the optical region AA is the region in the liquid crystal prism corresponding to the display area of ​​the display panel, used for optical modulation of the light emitted from the display panel. The non-optical region NA is the region in the liquid crystal prism corresponding to the non-display area of ​​the display panel. To ensure display quality, the non-optical region NA is located around the optical region AA. The first border region 11 of the non-optical region NA is located on one side of the optical region AA. Figure 2 Only the location of the binding pad 6 in area 61 is shown; the binding pad 6 itself is not shown. Figure 3 The area 61 where the binding pad 6 is located is shown to include the binding pad 6, combined with Figure 2 and Figure 3 As shown, the first frame region 11 includes a region 61 containing the bonding pad 6, which can be used for electrical connection with signal lines in the liquid crystal prism. In some embodiments, the flexible circuit board can be bonded to the liquid crystal prism via the bonding pad 6.

[0015] The liquid crystal prism comprises multiple electrode groups 3 and at least one lead group 4 on one side of the substrate 2. The electrode groups 3 include multiple driving electrodes 30, which can be used to control the orientation of liquid crystal molecules. The lead group 4 of the liquid crystal prism is used to realize the electrical connection between the driving electrodes 30 and external control circuits. The lead group 4 includes multiple leads 40, which are located in the non-optical region NA. Since both the driving electrodes 30 and the leads 40 can transmit electrical signals, they must be disposed in different layers to prevent unwanted electrical connections. Vias (or simply vias) are provided at the desired locations to ensure the normal operation of the liquid crystal prism. To ensure that the leads 40 can provide or receive signals to all the driving electrodes 30, each driving electrode 30 is electrically connected to at least one lead 40. Different driving electrodes 30 are electrically connected to different leads 40, so that different leads 40 can transmit different signals to different driving electrodes 30 in the same electrode group 3, or receive signals from different driving electrodes 30 in the same electrode group 3 using different leads 40. Multiple driving electrodes 30 receiving the same signal can be connected to the same lead 40, that is, multiple driving electrodes 30 receiving the same signal are connected in parallel.

[0016] The auxiliary lead group 5 in the liquid crystal prism includes multiple auxiliary leads 50, which can be used to connect the lead 40 in the lead group 4 and the bonding pad 6. Since the lead group 4 needs to be electrically connected to the bonding pad 6, the auxiliary leads 50 can serve as extensions of the lead 40, thereby making the placement of the bonding pad 6 more flexible.

[0017] For example, in combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the liquid crystal prism includes an optical region AA and a non-optical region NA. Driving electrodes 30 are located in both the optical and non-optical regions AA and NA. One side of the non-optical region NA is a first frame region 11. A lead group 4 is disposed in the non-optical region NA. Leads 40 in the lead group 4 surround the optical region AA, and each driving electrode 30 has a corresponding lead 40 electrically connected to it. In the same electrode group 3, different driving electrodes 30 are electrically connected to different leads 40. An auxiliary lead group 5 is disposed in the first frame region 11, located on the side of the lead group 4 in the first frame region 11 away from the optical region AA. The auxiliary leads 50 in the auxiliary lead group 5 are electrically connected to the leads 40 in the first frame region 11. A bonding pad 6 is positioned in the middle of the first frame region 11, and the auxiliary leads 50 are electrically connected to the bonding pad 6. Due to the presence of the auxiliary lead group 5, the bonding pad 6 can be moved to any position in the first frame region 11, thus reducing the risk of crimping when the bonding pad 6 is subsequently connected to the flexible circuit board.

[0018] The technical solution of this invention involves setting an auxiliary lead group 5 in the liquid crystal prism, using the auxiliary lead 50 in the auxiliary lead group 5 as the extension line of the lead 40, and connecting the lead 40 to the bonding pad 6 through the auxiliary lead 50. Since the connection position between the auxiliary lead 50 and the bonding pad 6 is flexible, the setting position of the bonding pad 6 is also flexible. For example, the bonding pad 6 can be set in the middle of the first frame area 11, which reduces the pressure risk that exists when the bonding pad 6 is subsequently connected to the flexible circuit board by hot pressing.

[0019] Optional, continue to refer to Figure 5 As shown, auxiliary lead 50 is set in the same layer as lead 40.

[0020] The auxiliary lead 50 and the lead 40 can be made of the same material and formed in the same process, thus eliminating the need for additional process steps for the auxiliary lead 50 and reducing the number of process steps.

[0021] Optional, continue to refer to Figure 5 As shown, the portion of the driving electrode 30 located in the first frame region 11 includes a bridge 301, one end of which is electrically connected to the lead 40, and the other end of which is electrically connected to the auxiliary lead 50.

[0022] The bridge 301 is used to realize the electrical connection between the lead 40 and the auxiliary lead 50. One end of the bridge 301 is electrically connected to the lead 40, which is disposed in a different layer, through a via, and the other end of the bridge 301 is electrically connected to the auxiliary lead 50, which is disposed in a different layer, through a via.

[0023] For example, auxiliary lead 50 and lead 40 are disposed in the same layer and both are disposed on one side of substrate 2, and driving electrode 30 is disposed on the side of lead 40 away from substrate 2. The portion of driving electrode 30 extending into the first frame region 11 serves as bridge 301. One end of bridge 301 is electrically connected to lead 40 through a via, and the other end of bridge 301 is electrically connected to auxiliary lead 50 through a via, thereby realizing the electrical connection between auxiliary lead 50 and lead 40 through bridge 301.

[0024] The technical solution of this invention includes a bridge 301 in the driving electrode in the first frame area, through which the auxiliary lead 50 and the lead 40 are electrically connected.

[0025] Optional, Figure 6 yes Figure 4 A schematic diagram of the second type of cross section along AA', as shown below. Figure 6 As shown, in the direction perpendicular to the substrate 2, the film layer where the driving electrode 30 is located is located between the film layer where the substrate 2 and the lead wire 40 is located.

[0026] For example, continue to refer to Figure 6As shown, the direction perpendicular to the substrate 2 can be the z-direction. A driving electrode 30 is fabricated on one side of the substrate 2, and an isolation layer is fabricated on the side of the driving electrode 30 away from the substrate 2. Vias are provided on the isolation layer at the positions corresponding to the two ends of the bridge 301. A lead layer is fabricated on the side of the isolation layer away from the driving electrode 30. The lead layer is etched to form a lead 40 and an auxiliary lead 50. The lead 40 is electrically connected to the bridge 301 through the via, and the auxiliary lead 50 is electrically connected to the bridge 301 through the via, thereby realizing the electrical connection between the lead 40 and the auxiliary lead 50.

[0027] In the technical solution of this embodiment of the invention, the lead wire 40 and the auxiliary lead wire 50 are disposed on the side of the driving electrode 30 away from the substrate 2, so that the lead wire 40 protects the driving electrode 30.

[0028] Optional, continue to refer to Figure 5 As shown, in the direction perpendicular to the substrate 2, the film layer where the lead 40 is located is located between the substrate 2 and the film layer where the driving electrode 30 is located.

[0029] For example, the direction perpendicular to the substrate 2 can be the z-direction. A lead layer is prepared on one side of the substrate 2, and the lead layer is etched to form a lead 40 and an auxiliary lead 50. An isolation layer is prepared on the side of the lead layer away from the substrate 2, and a via is provided in the isolation layer. A driving electrode 30 is prepared on the side of the isolation layer away from the lead layer. The portion of the driving electrode 30 that serves as a bridge 301 is electrically connected to the lead 40 and the auxiliary lead 50 respectively through the via.

[0030] In some embodiments, the driving electrode 30 may be fabricated using a transparent metal oxide material, such as indium tin oxide. The leads 40 and auxiliary leads 50 may be fabricated using a metallic material. During the etching process of the transparent metal oxide layer to form the driving electrode 30, the opaque leads 40 and auxiliary leads 50 can serve as alignment markers, thus eliminating the need for additional alignment markers.

[0031] In the technical solution of this embodiment of the invention, the driving electrode 30 is disposed on the side of the lead wire 40 and the auxiliary lead wire 50 away from the substrate 2. When the driving electrode 30 is a transparent metal electrode, the prepared lead wire 40 and the auxiliary lead wire 50, being opaque metal, can play an auxiliary role in the preparation of the pattern of the driving electrode 30, which helps to improve the preparation efficiency.

[0032] Optional, continue to refer to Figure 2 and Figure 4 As shown, a driving electrode 30 is electrically connected to at least one auxiliary lead 50, and different driving electrodes 30 in the same electrode group 3 are electrically connected to different auxiliary leads 50.

[0033] Since one driving electrode 30 is electrically connected to at least one lead 40, in order to ensure the connection between the lead 40 and the auxiliary lead 50, one driving electrode 30 is electrically connected to at least one auxiliary lead 50.

[0034] In order to ensure that different driving electrodes 30 in the same electrode group 3 can be led out to the bonding pad 6, the number of auxiliary leads 50 is not less than the number of driving electrodes 30 in the electrode group 3, that is, different driving electrodes 30 in the same electrode group 3 are electrically connected to different auxiliary leads 50.

[0035] For example, the electrode group 3 includes four different driving electrodes 30, one end of which is connected to four different leads 40 in the lead group 4, and the other end is connected to four different auxiliary leads 50.

[0036] The technical solution of this invention provides that a driving electrode 30 is electrically connected to at least one auxiliary lead 50, and different driving electrodes 30 in the same electrode group 3 are electrically connected to different auxiliary leads 50, which ensures that all driving electrodes 30 in the same electrode group 3 can be led out to the bonding pad 6 to realize signal transmission and reception.

[0037] Optional, Figure 7 This is a schematic diagram of the structure of a second type of liquid crystal prism provided according to an embodiment of the present invention, combined with... Figure 2 , Figure 4 and Figure 7 As shown, the non-optical region NA also includes a second frame region 12, which is located on the side of the optical region AA away from the first frame region 11 along the first direction y; the lead wire 40 is electrically connected to the portion of the driving electrode 30 located in the first frame region 11, and / or the lead wire 40 is electrically connected to the portion of the driving electrode 30 located in the second frame region 12; in the first frame region 11, along the first direction y, the auxiliary lead wire group 5 is located between at least one lead wire group 4 and the area 61 where the bonding pad 6 is located.

[0038] The second frame region 12 and the first frame region 11 are both non-optical regions NA and are located on both sides of the optical region AA along the first direction y.

[0039] Since the driving electrode 30 is located in the optical region AA and the non-optical region NA, and the position in the non-optical region NA can be the first frame region 11 and / or the second frame region 12, when the lead 40 is only connected to one end of the driving electrode 30, the lead 40 can be electrically connected to the portion of the driving electrode 30 located in the first frame region 11, or the lead 40 can be electrically connected to the portion of the driving electrode 30 located in the second frame region 12. Alternatively, the lead 40 can be connected to both ends of the driving electrode 30 to lead the signals from both ends of the driving electrode 30 to the bonding pad 6. In this case, it is necessary to set the lead 40 to be electrically connected to the portion of the driving electrode 30 located in the first frame region 11, and the lead 40 to be electrically connected to the portion of the driving electrode 30 located in the second frame region 12.

[0040] Since the auxiliary lead 50 is used as an extension of the lead 40, in order to ensure the flexibility of the mounting pad 6, when the lead 40 and the driving electrode 30 are partially electrically connected in the first frame area 11 or partially electrically connected in the second frame area 12, an auxiliary lead group 5 is provided to lead a portion of the lead 40 from the lead group 4 to the mounting pad 6. To minimize the wiring path, the auxiliary lead group 5 is positioned between the lead group 4 and the mounting pad 6.

[0041] To ensure flexibility in the placement of the bonding pad 6, when the lead 40 is partially electrically connected to the drive electrode 30 in the first frame region 11, and when the lead 40 is partially electrically connected to the drive electrode 30 in the second frame region 12 and the bonding pad 6 is located in the first frame region 11, an auxiliary lead group 5 must be provided at least between the lead group 4 connected to the drive electrode 30 in the first frame region 11 and the bonding pad 6. This is because, since the first frame region 11 and the frame region are arranged along the first direction y, the lead group 4 connected to the drive electrode 30 in the second frame region 12 can directly lead the lead 40 to the bonding pad 6. In some embodiments, the auxiliary lead group 5 may also be provided between the lead group 4 connected to the drive electrode 30 in the second frame region 12 and the bonding pad 6.

[0042] For example, refer to Figure 7 As shown, along the first direction y, the first frame region 11 is located below the liquid crystal prism, and the second frame region 12 is located above the liquid crystal prism. The lead 40 is only electrically connected to the lower end of the driving electrode 30, that is, the lead 40 is electrically connected to the portion of the driving electrode 30 located in the first frame region 11. An auxiliary lead group 5 is provided in the first frame region 11 and between the lead group 4 and the bonding pad 6.

[0043] For example, refer to Figure 2As shown, along the first direction y, the first frame region 11 is located below the liquid crystal prism, and the second frame region 12 is located above the liquid crystal prism. A lead group 4 is electrically connected to the upper end of the driving electrode 30, and another lead group 4 is electrically connected to the lower end of the driving electrode 30. The lead group 4 electrically connected to the upper end of the driving electrode 30 is directly led out to the bonding pad 6. The lead group 4 electrically connected to the lower end of the driving electrode 30 is led out to the bonding pad 6 via an auxiliary lead group 5.

[0044] Understandably, when the lead 40 is electrically connected to the driving electrode 30 in the second frame area 12, it can be directly electrically connected to the bonding pad 6 without crossing wires. However, when the lead 40 is electrically connected to the driving electrode 30 in the first frame area 11, since the bonding pad 6 is also in the first frame area 11 and the lead 40 needs to be electrically connected to all driving electrodes 30, it is impossible to satisfy both the requirement of flexible positioning of the bonding pad 6 and no increase in resistance. Therefore, an auxiliary lead group 5 is required in this case.

[0045] In the technical solution of this embodiment of the invention, a second frame area 12 is provided, and the lead wire 40 can also be electrically connected to the part of the driving electrode 30 located in the second frame area 12, thereby enabling the lead wire 40 to lead both ends of the driving electrode 30 to the bonding pad 6. An auxiliary lead wire group 5 is also provided between at least one lead wire group 4 and the area 61 where the bonding pad 6 is located, so as to ensure the flexibility of the setting position of the bonding pad 6.

[0046] Optional, Figure 8 This is a schematic diagram of the structure of a third type of liquid crystal prism provided according to an embodiment of the present invention, as shown below. Figure 8 As shown, the auxiliary lead 50 includes a first line segment 501 located in the first frame area 11; the lead 40 includes a first lead 401, which is electrically connected to the auxiliary lead 50, and the first lead 401 includes a second line segment 4011 located in the first frame area 11; the number of driving electrodes 30 electrically connected to the first line segment 501 is less than the number of driving electrodes 30 electrically connected to the second line segment 4011.

[0047] The first line segment 501 can be used to achieve electrical connection between the driving electrode 30 and the lead 40. The first lead 401 can be a lead 40 connected to the lower end of the driving electrode 30, and the second line segment 4011 can be a lead 40 connected to the driving electrode 30 located in the first frame area 11.

[0048] Since the first lead 401 needs to be electrically connected to all driving electrodes 30, and the second segment 4011 needs to be electrically connected to all driving electrodes 30 in the first frame area 11, while the first segment 501 only leads a portion of the leads 40 to the bonding pad 6, the number of driving electrodes 30 electrically connected to the first segment 501 is less than the number of driving electrodes 30 electrically connected to the second segment 4011. This allows the extension length of the first segment 501 to be less than the extension length of the second segment 4011, thus making the placement of the bonding pad 6 more flexible. The leads 40 in the lead group 4 need to be electrically connected to all driving electrodes 30, while the auxiliary leads 50 in the auxiliary lead group 5 do not need to be electrically connected to all driving electrodes 30, but only need to connect to at least a portion of the leads 40. The auxiliary leads 50 provide signals or receive signals for the leads 40, therefore the placement of the auxiliary lead group 5 is more flexible than that of the lead group 4.

[0049] For example, the first line segment 501 and the second line segment 4011 extend along the second direction x, and the first direction y intersects the second direction x. The first frame region 11 is located at the lower end of the liquid crystal prism. A first lead 401 is provided and connected to the lower end of the driving electrode 30, and the first lead 401 connects all the driving electrodes 30. The first lead 401 includes a second line segment 4011 located in the first frame region 11, and the second line segment 4011 is electrically connected to all the driving electrodes 30 in the first frame region 11. An auxiliary lead 50 includes the first line segment 501 in the first frame region 11, and the auxiliary lead 50 in the first line segment 501 is electrically connected to the lead 40 in the second line segment 4011 through a portion of the driving electrode 30. A bonding pad 6 is provided in the middle of the first frame region 11, and in the x direction, the length of the first line segment 501 is less than the length of the second line segment 4011.

[0050] In some embodiments, the extension direction of the driving electrode 30 intersects the first direction y and the second direction x. In one example, one edge of the optical region AA extends along the second direction x, and the other edge of the optical region AA extends along the first direction y. The extension direction of the driving electrode 30 is inclined.

[0051] The technical solution of this invention embodiment includes an auxiliary lead 50 comprising a first line segment 501 located in the first frame area 11, a lead 40 comprising a first lead 401, and a first lead 401 comprising a second line segment 4011 located in the first frame area 11. The number of driving electrodes 30 electrically connected to the first line segment 501 is less than the number of driving electrodes 30 electrically connected to the second line segment 4011, so that the length of the first line segment 501 can be less than the length of the second line segment 4011. The length of the first line segment 501 can be flexibly set according to the position of the binding pad 6.

[0052] Optional, continue to refer to Figure 8 As shown, lead 40 also includes a second lead 402, which is electrically insulated from the first lead 401. The second lead 402 includes a third segment 4021 located in the second frame region 12. The number of driving electrodes 30 electrically connected to the first segment 501 is less than the number of driving electrodes 30 electrically connected to the third segment 4021. The second lead 402 includes a fourth segment 4022 located in the first frame region 11. The fourth segment 4022 is electrically connected to the third segment 4021 and the bonding pad 6. Along the first direction y, the fourth segment 4022 is located between the area where the second segment 4011 and the bonding pad 6 are located.

[0053] The second lead 402 can be used for electrical connection to the upper end of the driving electrode 30. The lead 40 connected to the upper end of the driving electrode 30 and the lead 40 connected to the lower end of the driving electrode 30 are electrically insulated, so that the lead 40 leads both ends of the driving electrode 30 to the bonding pad 6 respectively. The second lead 402 includes a third segment 4021 located in the second frame area 12, and the third segment 4021 connects all the driving electrodes 30 in the second frame area 12. Since the first segment 501 is electrically connected to the second segment 4011 only through a portion of the driving electrodes 30, the number of driving electrodes 30 electrically connected to the first segment 501 is less than the number of driving electrodes 30 electrically connected to the third segment 4021.

[0054] The second lead 402 also includes a fourth segment 4022 located in the first frame area 11. The fourth segment 4022 can be used to make an electrical connection with the bonding pad 6. Therefore, the fourth segment 4022 is electrically connected to the third segment 4021 and the bonding pad 6. In order to reduce the trace length and lower the resistance, the fourth segment 4022 is positioned between the second segment 4011 and the area 61 where the bonding pad 6 is located along the first direction y.

[0055] Specifically, the liquid crystal prism includes a second lead 402 connected to the upper end of the driving electrode 30 and a first lead 401 connected to the lower end of the driving electrode 30. The first lead 401 includes a second segment 4011 extending along the second direction x and located in the first frame region 11, and the second lead 402 includes a third segment 4021 extending along the second direction x and located in the second frame region 12. The second segment 4011 connects to all the driving electrodes 30 in the first frame region 11, and the third segment 4021 connects to all the driving electrodes 30 in the second frame region 12. The second lead 402 also includes a fourth segment 4022 located in the first frame region 11, which also extends along the second direction x. The second segment 4011 is electrically connected to the bonding pad 6 via the first segment 501, and the third segment 4021 is electrically connected to the bonding pad 6 via the fourth segment 4022.

[0056] For example, when the first lead 401 and the second lead 402 are respectively led out to the bonding pad 6, open circuit detection of the drive electrode 30 can be performed. Specifically, the first lead 401 can be used as a signal input terminal, and the second lead 402 as a signal receiving terminal. The flexible circuit board is bonded to the bonding pad 6, and the flexible circuit board inputs an open circuit detection signal to the signal input terminal of the first lead 401. The open circuit detection signal enters all drive electrodes 30 from the first lead 401. The flexible circuit board receives the open circuit detection signal from the signal receiving terminal. When the flexible circuit board can receive the open circuit detection signal of the corresponding drive electrode 30, it indicates that no open circuit has occurred; when the flexible circuit board does not receive the open circuit detection signal of the corresponding drive electrode 30, it indicates that the drive electrode 30 is open.

[0057] For example, when the first lead 401 and the second lead 402 are respectively led out to the bonding pad 6, short-circuit detection of the drive electrode 30 can also be performed. Specifically, the first lead 401 can be used as a signal input terminal, and the second lead 402 as a signal receiving terminal. The flexible circuit board is bonded to the bonding pad 6, and the flexible circuit board inputs short-circuit detection signals to the signal input terminals of different first leads 401 respectively. The short-circuit detection signals enter all drive electrodes 30 from the first leads 401 respectively. When the flexible circuit board receives different short-circuit detection signals from different signal receiving terminals, it indicates that no short circuit has occurred; when the flexible circuit board receives the same short-circuit detection signal from different signal receiving terminals, it indicates that the drive electrode 30 is short-circuited.

[0058] It is understandable that the first lead 401 is electrically connected to all driving electrodes 30, and the second lead 402 is electrically connected to all driving electrodes 30, so that the open circuit and short circuit detection of all driving electrodes 30 can be realized.

[0059] The technical solution of this invention embodiment is to set a second lead 402, disconnect the second lead 402 from the first lead 401, and electrically connect the second lead 402 to the bonding pad 6. The first lead 401 is electrically connected to the bonding pad 6 through the auxiliary lead 50. This setting can not only realize the flexible setting of the bonding pad 6, but also realize the open circuit and short circuit detection of the driving electrode 30 in the liquid crystal prism.

[0060] Optional, continue to refer to Figure 8As shown, the non-optical region NA also includes a third frame region 13 and a fourth frame region 14, which are located on opposite sides of the optical region AA. The third frame region 13 connects the first frame region 11 and the second frame region 12. The first lead 401 also includes a fifth segment 4012 located in the third frame region 13, which is electrically connected to the second segment 4011. The second lead 402 also includes a sixth segment 4023 located in the fourth frame region 14, which is electrically connected to the third segment 4021 and the fourth segment 4022.

[0061] The first frame area 11, the second frame area 12, the third frame area 13, and the fourth frame area 14 are arranged around the optical area AA, forming the non-optical area NA. The third frame area 13 and the fourth frame area 14 are located on both sides of the optical area AA and are connected to the first frame area 11 and the second frame area 12. The fourth frame area 14 is also connected to the first frame area 11 and the second frame area 12.

[0062] To ensure that the first lead 401 is connected to all driving electrodes 30, the first lead 401 is further provided with a fifth segment 4012 located in the third frame area 13. To ensure that the second lead 402 is electrically connected to all driving electrodes 30, the second lead 402 is further provided with a sixth segment 4023 located in the fourth frame area 14.

[0063] For example, the extension direction of the driving electrode 30 intersects the first direction y and the second direction x. The driving electrode 30 is located in the optical region AA, the first frame region 11, the second frame region 12, the third frame region 13, and the fourth frame region 14. The first lead 401 is located in the third frame region 13 and the first frame region 11. The fifth segment 4012 of the first lead 401 is electrically connected to the lower end of all the driving electrodes 30 located in the third frame region 13, and the second segment 4011 of the first lead 401 is electrically connected to the lower end of all the driving electrodes 30 located in the first frame region 11. The second lead 402 is located in the second frame region 12 and the fourth frame region 14. The third segment 4021 of the second lead 402 is electrically connected to the upper end of all the driving electrodes 30 located in the second frame region 12, and the sixth segment 4023 of the second lead 402 is electrically connected to the upper end of all the driving electrodes 30 located in the fourth frame region 14.

[0064] The technical solution of this invention provides that by setting a fifth segment 4012 in the first lead 401 and a sixth segment 4023 in the second lead, both the first lead 401 and the second lead 402 are electrically connected to all the driving electrodes 30.

[0065] Optional, Figure 9 This is a schematic diagram of the structure of the fourth type of liquid crystal prism provided in the embodiments of the present invention. Figure 10 yes Figure 9 A cross-sectional schematic diagram along the middle BB', combined with Figure 9 and Figure 10 As shown, in the direction perpendicular to the substrate 2, the fourth line segment 4022 overlaps with the driving electrode 30.

[0066] Since the auxiliary lead 50 is electrically connected to the first lead 401 through a portion of the driving electrode 30, a portion of the driving electrode 30 overlaps with the second lead 402, the first lead 401, and the auxiliary lead 50 in the direction perpendicular to the substrate 2. To ensure that the number of cross-lines of the driving electrode 30 is as consistent as possible, and that the overlap capacitance between the driving electrode 30 and the metal line is as uniform as possible, a fourth line segment 4022 is also arranged to overlap with the driving electrode 30 in the direction perpendicular to the substrate 2.

[0067] For example, in combination Figure 5 , Figure 9 and Figure 10 As shown, the extension direction of the driving electrode 30 intersects the first direction y and the second direction x. In a direction perpendicular to the substrate 2, the driving electrode 30 connected to the auxiliary lead 50 overlaps with the first lead 401, the second lead 402, and the auxiliary lead 50, respectively. The fourth line segment 4022 connected to the bonding pad 6 also overlaps with the driving electrode 30, thus ensuring that the number of lines crossed by the driving electrode 30 connected to the auxiliary lead 50 and the driving electrode 30 overlapping with the fourth line segment 4022 are the same, and the overlap capacitance is consistent.

[0068] The technical solution of this invention provides that, by setting the fourth line segment 4022 to overlap with the driving electrode 30 in a direction perpendicular to the substrate, as many driving electrodes 30 in the liquid crystal prism as possible have the same number of lines, and the overlapping capacitance between the driving electrode 30 and the metal line is consistent.

[0069] Optional, Figure 11 This is a schematic diagram of the structure of the fifth type of liquid crystal prism provided in the embodiments of the present invention. Figure 12 This is a schematic diagram of the structure of the sixth type of liquid crystal prism provided in the embodiments of the present invention. Figure 13 This is a schematic diagram of the structure of the seventh type of liquid crystal prism provided according to an embodiment of the present invention, as shown below. Figure 11 , Figure 12 and Figure 13 As shown, the same lead 40 electrically connects the opposite ends of the driving electrode 30.

[0070] The same lead 40 can also connect to both ends of the drive electrode 30 simultaneously. This arrangement allows the bonding pad 6 to receive signals from the drive electrode 30 or output signals to the drive electrode 30. When the same lead 40 is electrically connected to the opposite ends of the drive electrode 30, the auxiliary lead 50 located in the first frame area 11 is only electrically connected to the lead 40 in the first frame area 11.

[0071] For example, such as Figure 11 As shown, the same lead wire 40 forms a non-closed pattern around the optical area AA and is electrically connected to both ends of the driving electrode 30. The auxiliary lead wire 50 is set in the first frame area 11 to realize the electrical connection between the lead wire 40 and the bonding pad 6.

[0072] For example, such as Figure 12 As shown, the same lead wire 40 forms a non-closed pattern around the optical area AA, and one end of the lead wire 40 is connected to the bonding pad 6. Both ends of the driving electrode 30 are electrically connected to the lead wire 40. The auxiliary lead wire 50 is set in the first frame area 11 to realize the electrical connection between the lead wire 40 and the bonding pad 6.

[0073] In some embodiments, such as Figure 13 As shown, to ensure the uniform distribution of the leads 40 connected to the driving electrodes 30 of the optical region AA, a single lead 40 is arranged to form a closed pattern around the optical region AA. For example, the optical region AA can be a rectangular structure, with the driving electrodes 30 passing through it. The lead group 4 surrounds the optical region AA and is electrically connected to all the driving electrodes 30 respectively, with the same lead 40 electrically connecting the opposite ends of the driving electrodes 30. An auxiliary lead 50 is disposed in the first frame area 11 to achieve electrical connection between the lead 40 and the bonding pad 6.

[0074] In the technical solution of this embodiment of the invention, the same lead 40 is electrically connected to the opposite ends of the driving electrode 30, so that the bonding pad 6 can also receive signals from the driving electrode 30 or output signals to the driving electrode 30. When the same lead 40 is electrically connected to the opposite ends of the driving electrode 30 to form a closed pattern, it helps to improve the electrical uniformity of the lead 40 at various positions.

[0075] Optional, Figure 14 This is a schematic diagram of the structure of the eighth type of liquid crystal prism provided according to an embodiment of the present invention, as shown below. Figure 14 As shown, the auxiliary lead group 5 includes a first auxiliary lead group 51 and a second auxiliary lead group 52; along the second direction x, the first auxiliary lead group 51 and the second auxiliary lead group 52 are spaced apart.

[0076] In order to ensure that the number of cross-lines of the driving electrode 30 is the same as much as possible and that the overlap capacitance between the driving electrode 30 and the metal line is as consistent as possible, the auxiliary lead group 5 is provided, including a first auxiliary lead group 51 and a second auxiliary lead group 52. The first auxiliary lead group 51 and the second auxiliary lead group 52 are arranged at intervals, so that some driving electrodes 30 overlap with the lead 40 and the first auxiliary lead group 51, and some driving electrodes 30 overlap with the lead 40 and the second auxiliary lead group 52.

[0077] Specifically, the lead wire group 4 forms a closed pattern around the optical area AA, and all the leads 40 in the lead wire group 4 are connected to both ends of the driving electrode 30. The first auxiliary lead wire group 51 and the second auxiliary lead wire group 52 are spaced apart in the first frame area 11, and are electrically connected to the leads 40 through a portion of the driving electrode 30.

[0078] The technical solution of this invention improves the electrical performance of the liquid crystal prism by setting a first auxiliary lead group 51 and a second auxiliary lead group 52 to ensure that the number of cross lines of the driving electrode 30 is the same as much as possible and that the overlapping capacitance between the driving electrode 30 and the metal line is as consistent as possible.

[0079] Optional, Figure 15 yes Figure 2 The first enlarged diagram at point B Figure 16 yes Figure 2 The second enlarged diagram at point B, combined with... Figure 4 , Figure 15 and Figure 16 As shown, the spacing L1 between adjacent leads 40 in the first border area 11 is smaller than the spacing L3 between adjacent leads 40 in the second border area 12; and / or, the spacing L2 between adjacent auxiliary leads 50 in the first border area 11 is smaller than the spacing L3 between adjacent leads 40 in the second border area 12.

[0080] The spacing between lead wires 40 refers to the vertical distance between the centers of lead wires 40 and 40; the spacing between auxiliary lead wires 50 refers to the vertical distance between the centers of auxiliary lead wires 50 and 50. The spacing between adjacent lead wires 40 can be the distance between the centers of adjacent lead wires 40 along the wire width direction; the spacing between adjacent auxiliary lead wires 50 can be the distance between the centers of adjacent auxiliary lead wires 50 along the wire width direction.

[0081] In this embodiment of the invention, since an auxiliary lead group 5 is added to the first border area 11, the spacing L1 between adjacent leads 40 in the first border area 11 can be reduced, and / or the spacing L2 between adjacent auxiliary leads 50 in the first border area 11 can be reduced, in order not to increase the width of the first border area 11.

[0082] Specifically, in combination Figure 4 and Figure 15 As shown, reducing the spacing L1 between adjacent leads 40 in the first border area 11, and / or reducing the spacing L2 between adjacent auxiliary leads 50 in the first border area 11, can reduce the line width of the leads 40, and / or the line width of the auxiliary leads 50. Combined with... Figure 4 and Figure 16 As shown, it can also be to reduce the minimum spacing between adjacent leads 40, and / or the minimum spacing between adjacent auxiliary leads 50.

[0083] For example, setting Figure 4 The liquid crystal prism is obtained by reducing the linewidth of lead 40 and auxiliary lead 50. Combined with... Figure 4 and Figure 15 The line width of the lead 40 is reduced, so that the spacing L1 between adjacent leads 40 in the first border area 11 is smaller than the spacing L2 between adjacent leads 40 in the second border area 12; the line width of the auxiliary lead 50 is reduced, so that the spacing L3 between adjacent auxiliary leads 50 in the first border area 11 is smaller than the spacing L2 between adjacent leads 40 in the second border area 12.

[0084] For example, setting Figure 4 This liquid crystal prism is obtained by reducing the minimum spacing between adjacent leads 40 and the minimum spacing between adjacent auxiliary leads 50. Combined with... Figure 4 and Figure 16 The reduction in minimum spacing makes the spacing L1 between adjacent leads 40 in the first border area 11 smaller than the spacing L2 between adjacent leads 40 in the second border area 12; the reduction in line width of auxiliary leads 50 makes the spacing L3 between adjacent auxiliary leads 50 in the first border area 11 smaller than the spacing L2 between adjacent leads 40 in the second border area 12.

[0085] In some embodiments, continue to refer to Figure 4 As shown, the spacing L1 between adjacent leads 40 in the first border area 11 is set to be equal to the spacing L2 between adjacent auxiliary leads 50 in the first border area 11, thereby reducing the spacing between metal lines in the first border area 11 through the process, and further reducing the width of the first border area 11.

[0086] The technical solution of this invention sets the spacing between adjacent leads 40 in the first border area 11 to be smaller than the spacing between adjacent leads 40 in the second border area 12; and / or sets the spacing between adjacent auxiliary leads 50 in the first border area 11 to be smaller than the spacing between adjacent leads 40 in the second border area 12, thereby reducing the space occupied by leads 40 and / or auxiliary leads 50 in the first border area 11 and solving the problem of widening of the first border area 11 due to the setting of auxiliary lead group 5.

[0087] Optional, Figure 17 This is a structural schematic diagram of the ninth type of liquid crystal prism provided according to an embodiment of the present invention. Figure 18 yes Figure 17 An enlarged diagram at point C. Figure 19 yes Figure 17 An enlarged diagram at point D, combined with... Figure 17 , Figure 18 and Figure 19As shown, the driving electrode 30 and the lead wire 40 are electrically connected in the first frame area 11 through a first via 71, the driving electrode 30 and the lead wire 40 are electrically connected in the second frame area 12 through a second via 72, and the driving electrode 30 and the auxiliary lead wire 50 are electrically connected in the first frame area 11 through a third via 73; the number of first vias 71 connected to the same driving electrode 30 is less than the number of second vias 72, and / or, the number of third vias 73 connected to the same driving electrode 30 is less than the number of second vias 72.

[0088] Since the driving electrode 30 is not on the same layer as the lead wire 40 and the auxiliary lead wire 50, the driving electrode 30 needs to be electrically connected to the lead wire 40 and the auxiliary lead wire 50 through vias. However, setting vias on the lead wire 40 and the auxiliary lead wire 50 requires space. When the line width of the lead wire 40 and the auxiliary lead wire 50 is reduced to a certain extent, the number of vias will be reduced. Therefore, when the line width of the lead wire 40 and / or the auxiliary lead wire 50 is reduced, the number of first vias 71 connected to the same driving electrode 30 is less than the number of second vias 72, and / or the number of third vias 73 connected to the same driving electrode 30 is less than the number of second vias 72.

[0089] For example, in combination Figure 17 , Figure 18 and Figure 19 As shown, when the linewidths of both the lead wire 40 and the auxiliary lead wire 50 decrease, the space for vias decreases. This means that only two first vias 71 can be provided at the connection point between the driving electrode 30 and the lead wire 40 in the first frame area 11, and only two third vias 73 can be provided at the connection point between the driving electrode 30 and the auxiliary lead wire 50 in the first frame area. Since the linewidth of the second frame area 12 remains unchanged, four second vias 72 can be provided at the connection point between the driving electrode 30 and the lead wire 40 in the second frame area 12. In this case, the number of first vias 71 connecting the same driving electrode 30 is less than the number of second vias 72. It is understandable that the reason for providing multiple vias at the connection points of the metal wires is to avoid situations where a single via cannot achieve an electrical connection between the driving electrode 30 and the metal wire.

[0090] In some embodiments, Figure 20 This is a structural schematic diagram of the tenth type of liquid crystal prism provided in an embodiment of the present invention. Figure 21 yes Figure 20 An enlarged diagram at point E, combined with... Figure 20 and Figure 21As shown, the non-optical region NA includes a first lead 401 and a second lead 402. The second lead 402 includes a third segment 4021 located in the second border region 12 and a fourth segment 4022 located in the first border region 11. The first lead 401 includes a second segment 4011 located in the first border region 11. The driving electrode 30 is electrically connected to the third segment 4021 through a second via 72, the driving electrode 30 is electrically connected to the second segment 4011 through a first via 71, and the driving electrode 30 is electrically connected to the auxiliary lead 50 in the first border region 11 through a third via 73. Along the direction perpendicular to the substrate 2, the fourth segment 4022 overlaps with the driving electrode 30 but is not electrically connected, so the linewidth of the lead 40 in the fourth segment 4022 can be reduced, and the linewidth of the lead 40 in the fourth segment 4022 is greater than the linewidth of the third segment 4021. Furthermore, the first border area 11 includes a first region 111, a second region 112, a third region 113, and a fourth region 114. The dimensions of the first region 111 and the third region 113 in the first direction y determine the width of the first border area 11, and the dimensions of the second region 112 and the fourth region 114 in the first direction y determine the width of the first border area 11. The first region 111 and the second region 112 are provided with a second line segment 4011 extending along the first direction y, the third region 113 is provided with an auxiliary lead line 50 extending along the first direction y, and the fourth region 114 is provided with a fourth line segment 4022 extending along the first direction y. The line width of the second line segment 4011 in the second region 112 is greater than that of the second line segment 4011 in the first region 111. The line width of the second line segment 4011 in the first region 111 is equal to that of the auxiliary lead 50 in the third region 113. The line width of the second line segment 4011 in the first region 111 is greater than that of the fourth line segment 4022 in the fourth region 114. This setting solves the problem of the increased width of the first border region 11 and makes the border around the optical region AA more balanced, which is beneficial to the fabrication process.

[0091] Optional, Figure 22 This is a schematic diagram of the structure of the eleventh liquid crystal prism provided in an embodiment of the present invention. Figure 23 yes Figure 22 A magnified diagram at point F. (Combined with...) Figure 22 and Figure 23 As shown, an auxiliary lead 50 is electrically connected to a driving electrode 30.

[0092] Since lead 40 needs to be electrically connected to all driving electrodes 30, the electrical connection between auxiliary lead 50 and lead 40 can be achieved by setting an auxiliary lead 50 and electrically connecting it to one driving electrode 30.

[0093] For example, each electrode group 3 includes four different driving electrodes 30, and the lead group 4 includes four different leads 40, each electrically connected to one of the four different driving electrodes 30. The auxiliary lead group 5 includes four auxiliary leads 50, each auxiliary lead 50 electrically connected to one driving electrode 30, thereby achieving electrical connection with the corresponding lead 40. Since the same driving electrodes 30 in different electrode groups 3 are arranged in parallel, it is sufficient to connect one auxiliary lead 50 to one driving electrode 30 to achieve signal reception and input for all leads 40.

[0094] The technical solution of this invention, by setting an auxiliary lead 50 electrically connected to a driving electrode 30, not only ensures the reception and input of signals from the lead 40, but also simplifies the fabrication process and improves the fabrication efficiency.

[0095] Optional, Figure 24 This is a schematic diagram of the structure of the twelfth type of liquid crystal prism provided in the embodiments of the present invention. Figure 25 yes Figure 24 A magnified diagram at point G, combined with... Figure 22 , Figure 23 , Figure 24 and Figure 25 As shown, multiple driving electrodes 30 electrically connected to the auxiliary leads 50 in the same auxiliary lead group 5 are located in one or more electrode groups 3.

[0096] Among them, the multiple driving electrodes 30 that are electrically connected to the auxiliary leads 50 in the same auxiliary lead group 5 can be located in one electrode group 3 or multiple electrode groups 3, as long as they are connected to all leads 40.

[0097] For example, such as Figure 22 and Figure 23 As shown, each electrode group 3 includes four different driving electrodes 30, and the lead group 4 includes four different leads 40. The leads 40 are electrically connected to the four different driving electrodes 30 in the same electrode group 3, and the same driving electrodes 30 in different electrode groups 3 are arranged in parallel. The auxiliary lead group 5 includes four auxiliary leads 50, which are connected to the driving electrodes 30, thereby realizing the electrical connection of all leads 40.

[0098] For example, such as Figure 24 and Figure 25 As shown, each electrode group 3 includes four different driving electrodes 30, and the lead group 4 includes four different leads 40. The leads 40 are electrically connected to the four different driving electrodes 30 respectively, and the same driving electrodes 30 in different electrode groups 3 are arranged in parallel. The auxiliary lead group 5 includes four auxiliary leads 50, which are connected to the driving electrodes 30 in different electrode groups 3 respectively, thereby realizing the electrical connection of all leads 40.

[0099] The technical solution of this invention provides that by setting multiple driving electrodes 30 electrically connected to the auxiliary leads 50 in the same auxiliary lead group 5, located in one or more electrode groups 3, the normal operation of the liquid crystal prism is ensured while making the setting of the liquid crystal prism more flexible.

[0100] Optional, continue to refer to Figure 2 and Figure 4 As shown, an auxiliary lead 50 is electrically connected to at least two drive electrodes 30.

[0101] In order to reduce the resistance of the driving electrode 30, an auxiliary lead 50 is provided to be electrically connected to at least two driving electrodes 30, so that the two driving electrodes 30 connected to the same auxiliary lead 50 are connected in parallel.

[0102] For example, each electrode group 3 includes four different driving electrodes 30, and the lead group 4 includes four different leads 40, which are electrically connected to the four different driving electrodes 30 respectively. The same driving electrodes 30 in different electrode groups 3 are arranged in parallel. The auxiliary lead group 5 includes four auxiliary leads 50, each of which is connected to all the driving electrodes 30 of one electrode group 3 and also to all the driving electrodes 30 of another electrode group 3.

[0103] The technical solution of this invention, by setting an auxiliary lead 50 electrically connected to at least two driving electrodes 30, allows the two driving electrodes 30 connected to the same auxiliary lead 50 to be connected in parallel, thereby reducing resistance. It also avoids the problem of signal transmission failure when a single auxiliary lead 50 is disconnected from a driving electrode 30, increasing the redundancy of the electrical connection.

[0104] Optional, Figure 26 This is a schematic diagram of the thirteenth liquid crystal prism provided in an embodiment of the present invention. Figure 27 It is along Figure 26 A cross-sectional schematic diagram of CC' in Figure 27 In the top view shown, due to space limitations, the number of driving electrodes 30 is relatively small. In reality, along... Figure 27 The cross-sectional structure cut by AA' may include more than 3 driving electrodes 30, combined with Figure 26 and Figure 27As shown, the first frame region 11 also includes a clearance region 7. Along a direction perpendicular to the substrate 2, the driving electrode 30, lead 40, and auxiliary lead 50 do not overlap with the clearance region 7; the driving electrode 30, lead 40, and auxiliary lead 50 are disposed outside the clearance region 7. The liquid crystal prism also includes a liquid crystal layer 81, a common electrode 82, and a connector 83. The liquid crystal layer 81 includes multiple liquid crystal molecules and is located between the driving electrode 30 and the common electrode 82. One end of the connector 83 is connected to the common electrode 82, and the other end of the connector 83 is located in the clearance region 7.

[0105] The liquid crystal layer 81 may include multiple liquid crystal molecules. By controlling the deflection angle of the liquid crystal molecules in the liquid crystal prism, the change of the light path can be controlled. The common electrode 82 can serve as a voltage reference electrode to form a stable potential difference with the driving electrode 30. The connector 83 can be used to lead the common electrode 82 provided on the opposing substrate 84 of the liquid crystal prism to the substrate 2 and electrically connect it to the bonding pad 6 provided on the substrate 2. It can then be connected to an external control circuit through a flexible circuit board that is bonded and electrically connected to the bonding pad 6. To prevent the connector 83 from short-circuiting with at least one of the driving electrode 30, the lead 40, and the auxiliary lead 50, a clearance area 7 is provided, and the connector 83 is disposed in the clearance area 7.

[0106] For example, the driving electrode 30 is disposed on one side of the substrate 2, the liquid crystal layer 81 is located on the side of the driving electrode 30 away from the substrate 2, and the common electrode 82 is located on the side of the liquid crystal layer 81 away from the driving electrode 30. A sealant 85 is also disposed in the liquid crystal prism, and the sealant 85, the substrate 2, and the opposing substrate 84 form a sealed space for accommodating the liquid crystal layer 81.

[0107] For example, the liquid crystal prism 100 may include multiple prism units (not shown in the figure), each prism unit including an electrode group 3. Each prism unit corresponds one-to-one with an electrode group 3; that is, the area corresponding to one electrode group 3 constitutes one prism unit. The prism unit also includes liquid crystal molecules in the area corresponding to the electrode group 3 and a portion of the common electrode 82. In 3D display, the optical function of one prism unit is equivalent to a physical cylindrical lens.

[0108] Based on the same inventive concept. Figure 28 This is a schematic diagram of the structure of a display device according to an embodiment of the present invention, such as... Figure 28As shown, this embodiment of the invention also provides a display device, including a display panel 200 and a liquid crystal prism 100. The liquid crystal prism 100 is located on the light-emitting side of the display panel 200. Specifically, during 3D display, a voltage is applied to the driving electrode 30 in the liquid crystal prism 100 to control the deflection of liquid crystal molecules in each prism unit, thereby forming a lenticular lens array with all prism units. The light emitted from the display panel 200 passes through the liquid crystal prism 100 to form a left-eye image and a right-eye image. The viewer's left and right eyes then receive images with parallax, which are then combined in the viewer's brain to form a 3D image. During 2D display, the same voltage as the common electrode 82 is applied to the driving electrode 30 in the liquid crystal prism 100. When the voltage of the common electrode 82 is 0V, it is not necessary to apply a voltage to the driving electrode 30 in the liquid crystal prism 100. Since the liquid crystal molecules in the liquid crystal prism 100 are arranged in parallel and do not split the light output from the display panel 200, the light reaching the human eye is a 2D display.

[0109] The technical solution of this invention provides a display device including a display panel 200 and a liquid crystal prism 100. The bonding pad 6 of the liquid crystal prism is flexibly positioned, which reduces the risk of pressure bonding when the bonding pad 6 is subsequently connected to the flexible circuit board by hot pressing. This achieves both 2D and 3D display while improving the reliability of the display device.

[0110] Figure 29 This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention, such as... Figure 28 and Figure 29 As shown, the display panel 200 includes a lower substrate 201, multiple scan lines 204, and multiple data lines 205. The multiple scan lines 204 and multiple data lines 205 are located on the same side of the lower substrate 201. The multiple scan lines 204 extend along a second direction x and are arranged along a first direction y, and the multiple data lines 205 extend along the first direction y and are arranged along the second direction x. Figure 29 The sub-pixels electrically connected to scan line 204 and data line 205 are not shown. Nor are the driving circuits that provide signals to scan line 204 and data line 205 shown.

[0111] For example, the display panel 200 includes a display area 202 and a non-display area 203. The display area 202 corresponds to the optical area AA, and the non-display area 203 corresponds to the non-optical area NA. In one example, the liquid crystal prism 100 is stacked on the light-emitting side of the display panel 200, with the display area 202 and the optical area AA facing each other. The optical area AA has the same area as the display area 202, or the optical area AA has an area similar to the display area 202. The non-display area 203 and the non-optical area NA face each other. It should also be noted that, for the purpose of illustrating the traces and their connections in the top view of the liquid crystal prism 100, the size of the non-optical area NA relative to the optical area AA is enlarged. The actual size ratio of the non-optical area NA to the optical area AA is based on the actual product. Similarly, the actual size ratio of the display area 202 and the non-display area 203 is based on the actual product.

[0112] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A liquid crystal prism, characterized in that, It includes an optical area and a non-optical area, the non-optical area being located outside the optical area, the non-optical area including a first frame area, the first frame area being located on one side of the optical area and provided with a binding pad; The liquid crystal prism includes a substrate, multiple electrode groups, and lead groups. The multiple electrode groups and lead groups are located on one side of the substrate. Each electrode group includes multiple driving electrodes, which are located in the optical region and the non-optical region. Each lead group is located in the non-optical region and includes multiple leads. The driving electrodes and the leads are disposed in different layers. One driving electrode is electrically connected to at least one lead, and different driving electrodes are electrically connected to different leads. The liquid crystal prism also includes an auxiliary lead group, at least a portion of which is located in the first frame area and includes multiple auxiliary leads, which are electrically connected to the bonding pad.

2. The liquid crystal prism according to claim 1, characterized in that, The auxiliary lead is disposed in the same layer as the lead.

3. The liquid crystal prism according to claim 2, characterized in that, The portion of the driving electrode located in the first frame area includes a bridge, one end of which is electrically connected to the lead wire, and the other end of which is electrically connected to the auxiliary lead wire.

4. The liquid crystal prism according to claim 3, characterized in that, In a direction perpendicular to the substrate, the film layer containing the driving electrode is located between the substrate and the film layer containing the lead.

5. The liquid crystal prism according to claim 3, characterized in that, In a direction perpendicular to the substrate, the film layer containing the lead is located between the substrate and the film layer containing the driving electrode.

6. The liquid crystal prism according to claim 1, characterized in that, One of the driving electrodes is electrically connected to at least one of the auxiliary leads, and different driving electrodes in the same electrode group are electrically connected to different auxiliary leads.

7. The liquid crystal prism according to claim 1, characterized in that, The non-optical area also includes a second border area, which is located on the side of the optical area away from the first border area along the first direction; The lead wire is electrically connected to the portion of the driving electrode located in the first frame area, and / or the lead wire is electrically connected to the portion of the driving electrode located in the second frame area; In the first border area, along the first direction, the auxiliary lead group is located between at least one of the lead groups and the area where the bonding pad is located.

8. The liquid crystal prism according to claim 7, characterized in that, The auxiliary lead includes a first line segment located in the first border area; the lead includes a first lead, which is electrically connected to the auxiliary lead, and the first lead includes a second line segment located in the first border area; The number of driving electrodes electrically connected to the first line segment is less than the number of driving electrodes electrically connected to the second line segment.

9. The liquid crystal prism according to claim 8, characterized in that, The first line segment and the second line segment extend along the second direction, and the first direction intersects the second direction.

10. The liquid crystal prism according to claim 8, characterized in that, The lead wire further includes a second lead wire, which is electrically insulated from the first lead wire. The second lead wire includes a third line segment located in the second frame area. The number of driving electrodes electrically connected to the first line segment is less than the number of driving electrodes electrically connected to the third line segment. The second lead includes a fourth segment located in the first border area, the fourth segment electrically connecting the third segment and the bonding pad, and along the first direction, the fourth segment is located between the area where the second segment and the bonding pad are located.

11. The liquid crystal prism according to claim 10, characterized in that, The non-optical area further includes a third border area and a fourth border area, which are located on opposite sides of the optical area. The third border area connects the first border area and the second border area. The first lead further includes a fifth segment located in the third border area, the fifth segment being electrically connected to the second segment; the second lead further includes a sixth segment located in the fourth border area, the sixth segment being electrically connected to the third segment and the fourth segment.

12. The liquid crystal prism according to claim 10, characterized in that, In a direction perpendicular to the substrate, the fourth line segment overlaps with the driving electrode.

13. The liquid crystal prism according to claim 1, characterized in that, The driving electrodes are electrically connected by the same lead.

14. The liquid crystal prism according to claim 13, characterized in that, The same lead wire forms a closed pattern around the optical region.

15. The liquid crystal prism according to claim 14, characterized in that, The auxiliary lead group includes a first auxiliary lead group and a second auxiliary lead group; Along the second direction, the first auxiliary lead group and the second auxiliary lead group are spaced apart.

16. The liquid crystal prism according to claim 7, characterized in that, The spacing between adjacent leads in the first border area is smaller than the spacing between adjacent leads in the second border area; And / or, the spacing between adjacent auxiliary leads in the first border area is less than the spacing between adjacent leads in the second border area.

17. The liquid crystal prism according to claim 16, characterized in that, The driving electrode and the lead are electrically connected in the first frame area through a first via, the driving electrode and the lead are electrically connected in the second frame area through a second via, and the driving electrode and the auxiliary lead are electrically connected in the first frame area through a third via. The number of first vias connected to the same driving electrode is less than the number of second vias, and / or the number of third vias connected to the same driving electrode is less than the number of second vias.

18. The liquid crystal prism according to claim 16, characterized in that, The spacing between adjacent leads in the first border area is equal to the spacing between adjacent auxiliary leads in the first border area.

19. The liquid crystal prism according to claim 9, characterized in that, The extension direction of the driving electrode intersects the first direction and the second direction.

20. The liquid crystal prism according to claim 1, characterized in that, One of the auxiliary leads is electrically connected to one of the driving electrodes.

21. The liquid crystal prism according to claim 20, characterized in that, The driving electrodes, which are electrically connected to the auxiliary leads in the same auxiliary lead group, are located in one or more of the electrode groups.

22. The liquid crystal prism according to claim 1, characterized in that, One of the auxiliary leads is electrically connected to at least two of the driving electrodes.

23. The liquid crystal prism according to claim 1, characterized in that, The first border area further includes a clearance area, in which the driving electrode, the lead wire, and the auxiliary lead wire do not overlap with the clearance area along a direction perpendicular to the substrate; The liquid crystal prism further includes a liquid crystal layer, a common electrode, and a connector. The liquid crystal layer is located between the driving electrode and the common electrode. One end of the connector is connected to the common electrode, and the other end of the connector is located in the clearance area.

24. A display device, characterized in that, It includes a display panel and a liquid crystal prism as described in any one of claims 1-23.

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