A wide-viewing angle integrated imaging liquid crystal lens assembly and display device based on elliptical ring electrodes

Abstract

This invention discloses a wide-viewing-angle integrated imaging liquid crystal lens assembly and display device based on an elliptical ring electrode, relating to the field of 3D display. The assembly includes: a first substrate, a driving electrode disposed on the first substrate, a second substrate, a common electrode disposed on the second substrate, and a liquid crystal layer disposed between the first and second substrates. The driving electrode includes an elliptical ring driving sub-electrode, the major axis of which is the transverse axis of the liquid crystal lens array, and the major axis of which is the longitudinal axis of the liquid crystal lens array. The driving electrode is used to drive the liquid crystal layer to deflect and form a first lens, the first lens being longer along the transverse axis than along the longitudinal axis. This invention effectively improves the lateral viewing angle and controls the longitudinal viewing angle, avoiding wasted viewing angles in longitudinally limited viewing areas, improving pixel utilization of the display panel, and further improving the resolution utilization of 3D displays.

Description

Technical Field

[0001] This invention relates to the field of 3D display, and in particular to a wide-viewing-angle integrated imaging liquid crystal lens assembly and display device based on an elliptical ring electrode. Background Technology

[0002] Integrated imaging is an automated stereoscopic and multi-view 3D imaging technology. Its core feature lies in using a two-dimensional microlens array (also known as a fly-eye lens) to capture and reproduce the light field. This technology eliminates the need for large integrated objectives or observation lenses. Instead, it uses the microlens array to record and reproduce light from different angles, thereby creating a 3D visual effect containing depth information. Specifically, integrated imaging technology includes two main processes: recording and reproduction. During recording, the microlens array records information about the object's spatial scene onto film. Each microlens captures a portion of the scene information from a different direction, generating tiny images (i.e., image pixels) from different perspectives. During reproduction, using the same microlens array as during recording, the light from the image pixels is focused and restored through the principle of optical reversibility, reproducing a 3D image of the object's spatial scene.

[0003] In existing technologies, the horizontal viewing angle of integrated imaging 3D displays is generally 1:1. In order to meet the requirements of a wide viewing angle, the vertical resolution of the display is often reduced at the same time. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a wide-viewing-angle integrated imaging liquid crystal lens group and display device based on an elliptical ring electrode. The invention aims to set a first electrode group (including an elliptical ring driving electrode) and drive the liquid crystal layer to deflect to form a first lens by providing a first relative driving voltage to the second electrode through the first electrode group. Based on this, the first lens is quasi-ellipsoidal, so that the lateral viewing angle is greater than the longitudinal viewing angle, effectively reducing the longitudinal viewing angle / lateral viewing angle ratio, optimizing the viewing angle, and improving the resolution utilization.

[0005] To achieve the above objectives, in a first aspect of the present invention, a wide-viewing-angle integrated imaging liquid crystal lens assembly based on an elliptical ring electrode is provided, the liquid crystal lens assembly being used in integrated imaging; the liquid crystal lens assembly includes:

[0006] A first substrate, a first electrode group arranged in an array on the first substrate, a liquid crystal layer, a second electrode disposed on a second substrate, and the second substrate; the first electrode group includes at least two nested elliptical ring electrodes; the major axis of the ellipse of the elliptical ring driving electrode is parallel to the transverse axis of the liquid crystal lens group, and the minor axis of the ellipse of the elliptical ring driving electrode is parallel to the longitudinal axis of the liquid crystal lens group; the first electrode group is used to provide a first relative driving voltage to the second electrode to drive the liquid crystal layer to deflect and form a first lens, the first lens being longer along the transverse axis direction than the longitudinal axis direction.

[0007] The aspect ratio of the region driven by the elliptical ring driving electrode is similar to the first horizontal and vertical viewing angle ratio of the integrated imaging; wherein, the horizontal and vertical viewing angle ratio is the ratio of the horizontal viewing angle to the vertical viewing angle of the integrated imaging.

[0008] In one specific embodiment, the second electrode is a first common electrode; each of the elliptical ring electrodes is applied with a corresponding first relative driving voltage relative to the first common electrode.

[0009] In one specific embodiment, a first high-resistivity connection layer is disposed between the elliptical ring electrodes; the second electrode includes at least two nested circular ring electrodes, and a second high-resistivity connection layer is disposed between the circular ring electrodes; when the elliptical ring electrodes are applied with a common potential and serve as the second common electrode, each of the circular ring electrodes is applied with a corresponding second relative driving voltage relative to the second common electrode to deflect the liquid crystal in the liquid crystal lens unit to form a second lens; the second horizontal and vertical viewing angle ratio of the second lens is 1:1.

[0010] In one specific embodiment, a third electrode is further disposed between the first electrode groups on the first substrate, and an insulating gap is disposed between the third electrode and the first electrode groups; a fourth electrode is disposed between the second electrodes on the second substrate, and an insulating gap is disposed between the fourth electrode and the second electrode.

[0011] In one specific embodiment, the first electrode group and the second electrode are arranged in an array according to their respective arrangement spacing.

[0012] In one specific embodiment, the area sizes of the M first electrode groups correspond to the N second electrodes, and they are arranged in a relative array; M and N are positive integers.

[0013] In one specific implementation, the first horizontal-to-vertical viewing angle ratio is A:B, where A and B are positive integers, and A is greater than B.

[0014] A second aspect of the present invention provides a wide-viewing-angle integrated imaging display device based on an elliptical ring electrode, comprising:

[0015] The first aspect of the present invention provides a liquid crystal lens group and a 2D display array; the liquid crystal lens group is disposed on the 2D display array.

[0016] The beneficial effects of the present invention are as follows: (1) When the first electrode group is driven relative to the second electrode, since the first electrode group is elliptical (the horizontal axis is the major axis), it forms an elliptical lens and realizes a wide-view integrated imaging lens. The present invention can realize wide-view integrated imaging according to the requirements, avoid the decrease in vertical resolution, and improve the resolution of stereoscopic display. (2) In the present invention, the second electrode includes at least two nested circular ring electrodes. Based on this, one side is used as a common electrode, and the other side can be independently set according to the resolution array requirements and driven, improving the arrangement independence of the two viewing modes. Furthermore, the driving difficulty of the driving electrode measurement can be simplified based on the common electrode. At the same time, the present invention can be compatible with ordinary viewing angles through the second electrode, improving the compatibility range of the source material. (3) In the present invention, a first high-resistivity electrical connection layer is provided between the elliptical ring electrodes in the first electrode group, and a second high-resistivity electrical connection layer is provided between the circular ring electrodes in the second electrode. Based on this, when the first electrode group or the second electrode is used as a common electrode, it can ensure that the potential of the area between the electrodes is also the potential of the common electrode, so that the common electrode of the entire area is balanced, avoiding local distortion of the liquid crystal lens. (4) In this invention, a third electrode is further provided between the first electrode groups on the first substrate, and an insulating gap is provided between the third electrode and the first electrode group; a fourth electrode is provided between the second electrodes on the second substrate, and an insulating gap is provided between the fourth electrode and the second electrode; and when the system is in the wide viewing angle mode, the fourth electrode is connected to the first common potential; when the system is in the normal mode, the third electrode is connected to the second common potential; this ensures that the potential of the area between the electrodes is also the common electrode potential, thereby balancing the common electrodes of the entire area and avoiding local distortion of the liquid crystal lens. Attached Figure Description

[0017] Figure 1 This is a side view schematic diagram of a wide-view integrated imaging liquid crystal lens group based on an elliptical ring electrode according to a specific embodiment of the present invention.

[0018] Figure 2 This is a top view of the first electrode group and the second electrode in a specific embodiment of the present invention;

[0019] Figure 3 This is a top view of the first electrode group and the second electrode in another specific embodiment of the present invention;

[0020] Figure 4This is a top view of the first electrode group and the second electrode in another specific embodiment of the present invention. Detailed Implementation

[0021] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0022] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0023] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0024] like Figures 1-4 As shown, this embodiment of the invention provides a wide-viewing-angle integrated imaging liquid crystal lens group 100 based on an elliptical ring electrode 106, the liquid crystal lens group 100 being used in integrated imaging; the liquid crystal lens group 100 includes:

[0025] A first substrate 101, a first electrode group 102 arranged in an array on the first substrate 101, a liquid crystal layer 105, a second electrode 104 disposed on a second substrate 103, and the second substrate 103; the first electrode group 102 includes at least two nested elliptical ring electrodes 106; the major axis of the ellipse of the elliptical ring driving electrode is parallel to the horizontal axis of the liquid crystal lens group 100, and the minor axis of the ellipse of the elliptical ring driving electrode is parallel to the vertical axis of the liquid crystal lens group 100; the first electrode group 102 is used to provide a first relative driving voltage to the second electrode 104 to drive the liquid crystal layer 105 to deflect and form a first lens, the first lens being longer along the horizontal axis direction than the vertical axis direction.

[0026] The aspect ratio of the region driven by the elliptical ring driving electrode is similar to the first horizontal and vertical viewing angle ratio of the integrated imaging; wherein, the horizontal and vertical viewing angle ratio is the ratio of the horizontal viewing angle to the vertical viewing angle of the integrated imaging.

[0027] Optionally, the second electrode 104 is a first common electrode; each of the elliptical ring electrodes 106 is respectively applied with a corresponding first relative driving voltage relative to the first common electrode. Typically, the second electrode 104 can be a full-surface electrode.

[0028] To achieve compatibility with common viewing angles, the present invention can also use the first electrode group 102 as a common electrode and pattern the second electrode 104 to achieve lens driving. In this case, the second electrode 104 is a non-full-surface electrode.

[0029] Specifically, optionally, a first high-resistance electrical connection layer 109 is disposed between the elliptical ring electrodes 106; the second electrode 104 includes at least two nested circular ring electrodes 107, and a second high-resistance electrical connection layer 108 is disposed between the circular ring electrodes 107; when the elliptical ring electrodes 106 are applied with a common potential and serve as the second common electrode, each of the circular ring electrodes 107 is applied with a corresponding second relative driving voltage relative to the second common electrode to deflect the liquid crystal in the liquid crystal lens unit to form a second lens; the second horizontal and vertical viewing angle ratio of the second lens is 1:1.

[0030] To improve the smoothness of driving liquid crystal deflection and reduce lens distortion when used as a common electrode, preferably, a third electrode is also provided between the first electrode group 102 on the first substrate 101, and an insulating gap is provided between the third electrode and the first electrode group 102; a fourth electrode is provided between the second electrodes 104 on the second substrate 103, and an insulating gap is provided between the fourth electrode and the second electrode 104.

[0031] Optionally, the first electrode group 102 and the second electrode 104 are arranged in their respective arrays according to their respective spacing. In fact, since they serve as common electrodes, the arrays on both sides do not need to be matched.

[0032] To reduce the risk of distortion, optionally, the area sizes of the M first electrode groups 102 correspond to the N second electrodes 104, and are arranged according to a relative array; M and N are positive integers.

[0033] Typically, the first aspect ratio is A:B, where A and B are positive integers, and A is greater than B.

[0034] like Figure 2 In terms of array arrangement, Figure 2-a contains 4 second electrodes, 104 groups, 104 corresponding to each. Figure 2 -b contains two first electrode groups 102; such as Figure 3 As shown, in terms of array arrangement, in Figure 3 -a contains 1 second electrode, 104 groups, 104 corresponding to... Figure 3 -b contains two first electrode groups 102; while for Figure 4 In terms of the number of arrays, the second electrode group 104 and the first electrode group 102 are not related.

[0035] In a second embodiment of the present invention, a wide-viewing-angle integrated imaging display device based on an elliptical ring electrode 106 is provided, comprising:

[0036] The liquid crystal lens group 100 provided in the first embodiment;

[0037] And a 2D display array; the liquid crystal lens group 100 is disposed on the 2D display array.

[0038] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A wide-viewing-angle integrated imaging liquid crystal lens assembly based on an elliptical ring electrode, characterized in that, The liquid crystal lens group is used for integrated imaging; the liquid crystal lens group includes: A first substrate, a first electrode group arranged in an array on the first substrate, a liquid crystal layer, a second electrode disposed on a second substrate, and the second substrate; the first electrode group includes at least two nested elliptical ring electrodes; the major axis of the ellipse of the elliptical ring electrode is parallel to the transverse axis of the liquid crystal lens group, and the minor axis of the ellipse of the elliptical ring electrode is parallel to the longitudinal axis of the liquid crystal lens group; the first electrode group is used to provide a first relative driving voltage to the second electrode to drive the liquid crystal layer to deflect and form a first lens, the first lens being longer along the transverse axis than along the longitudinal axis. The aspect ratio of the region driven by the elliptical ring electrode is similar to the first horizontal and vertical viewing angle ratio of the integrated imaging; wherein, the horizontal and vertical viewing angle ratio is the ratio of the horizontal viewing angle to the vertical viewing angle of the integrated imaging. A first high-resistivity connection layer is disposed between the elliptical ring electrodes; the second electrode includes at least two nested circular ring electrodes, and a second high-resistivity connection layer is disposed between the circular ring electrodes; when the elliptical ring electrodes are applied with a common potential and serve as the second common electrode, each of the circular ring electrodes is applied with a corresponding second relative driving voltage relative to the second common electrode to deflect the liquid crystal in the liquid crystal lens unit to form a second lens; the second horizontal and vertical viewing angle ratio of the second lens is 1:1; A third electrode is disposed between the first electrode groups on the first substrate, and an insulating gap is disposed between the third electrode and the first electrode groups; a fourth electrode is disposed between the second electrodes on the second substrate, and an insulating gap is disposed between the fourth electrode and the second electrode. The first aspect ratio is A:B, where A and B are positive integers, and A is greater than B.

2. The wide-viewing-angle integrated imaging liquid crystal lens assembly based on an elliptical ring electrode as described in claim 1, characterized in that, The second electrode is the first common electrode; each of the elliptical ring electrodes is respectively applied a corresponding first relative driving voltage relative to the first common electrode.

3. The wide-viewing-angle integrated imaging liquid crystal lens assembly based on an elliptical ring electrode as described in claim 1, characterized in that, The first electrode group and the second electrode are arranged in their respective arrays according to their respective spacing.

4. The wide-viewing-angle integrated imaging liquid crystal lens assembly based on an elliptical ring electrode as described in claim 1, characterized in that, The regions of M first electrode groups correspond to N second electrodes, and are arranged in an array; M and N are positive integers.

5. A wide-viewing-angle integrated imaging display device based on an elliptical ring electrode, characterized in that, include: The liquid crystal lens group and the 2D display array provided by any one of claims 1-4; The liquid crystal lens group is disposed on the 2D display array.

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