Display device

Abstract

The present application discloses a display device, which includes a display panel and a light-controlling liquid crystal box. The display panel includes a plurality of pixels arranged in an array, and the plurality of pixels include a plurality of columns of pixels arranged side by side and spaced apart in a first direction. The light-controlling liquid crystal box is arranged on the light-emitting side of the display panel. The light-controlling liquid crystal box includes two substrates and a liquid crystal layer arranged between the two substrates. Two electrode layers are respectively arranged on two opposite surfaces of the two substrates. At least one electrode layer is provided with a plurality of grooves for dividing the electrode layer into a plurality of electrode patterns insulated from each other. Each electrode pattern corresponds to a column of pixels, and an edge of each electrode pattern is arranged to overlap with an edge of the corresponding column of pixels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] The human eye can perceive stereoscopic images because light from external objects enters the human eye from two different angles. In other words, the left and right eyes see different images of the same object, and the brain then analyzes and synthesizes the images seen by the left and right eyes. Based on the principle that the human eye perceives stereoscopic images, a large number of 2D and 3D switchable products have been launched on the market. Existing 2D and 3D switchable products generally use optical components such as liquid crystal gratings, cylindrical lenses, and directional light sources. When the liquid crystal gratings or cylindrical lenses are bonded to the liquid crystal box of the underlying display, the accuracy of the bonding will affect the accuracy of the image received by the user's left and right eyes, thereby affecting the 3D imaging effect. The existing proposal is to use a solution of three layers of glass and two layers of liquid crystal to improve the alignment accuracy. However, this solution has the problem that the materials in the lower liquid crystal box cannot meet the process requirements and the alignment equipment of the liquid crystal box needs to be modified, which makes it less feasible. Summary of the Invention

[0003] The embodiments of the present application provide a display device that can improve the alignment accuracy of a display panel and a light-control liquid crystal cell, thereby improving the 3D imaging effect of the display device.

[0004] In a first aspect, an embodiment of the present application provides a display device, comprising:

[0005] A display panel comprising a plurality of pixels arranged in an array, wherein the plurality of pixels comprise a plurality of columns of pixels arranged side by side and spaced apart in a first direction; and

[0006] a light-controlling liquid crystal cell, the light-controlling liquid crystal cell being arranged on the light-emitting side of the display panel, the light-controlling liquid crystal cell comprising two substrates and a liquid crystal layer arranged between the two substrates, two electrode layers being respectively arranged on two opposing surfaces of the two substrates;

[0007] Among them, at least one of the electrode layers is provided with multiple grooves for dividing the electrode layer into multiple electrode patterns insulated from each other, each of the electrode patterns corresponds to a column of the pixels, and the edge of each electrode pattern overlaps with the edge of the corresponding column of pixels.

[0008] In one embodiment, the electrode layer is provided with the groove, which extends along the second direction and divides the electrode layer into a plurality of strip electrodes insulated from each other, each of the strip electrodes corresponds to a column of pixels, and an edge of each strip electrode is arranged to overlap an edge of the corresponding column of pixels;

[0009] Wherein, the electrode pattern includes the strip electrodes.

[0010] In one embodiment, the electrode layer includes a plurality of first excitation electrodes arranged side by side and spaced apart in the first direction, each of the first excitation electrodes is arranged in a strip shape and extends along the second direction;

[0011] Each column of pixels corresponds to M first excitation electrodes, and among the M first excitation electrodes, at least one of the two outermost first excitation electrodes is provided with the groove to separate portions of the two outermost first excitation electrodes that extend beyond the pixels in the corresponding column;

[0012] Wherein, the electrode pattern includes M first excitation electrodes.

[0013] In one embodiment, the number of the excitation electrodes is set to N, where N≥100.

[0014] In one embodiment, the two substrates include a first substrate close to the display panel and a second substrate far from the display panel;

[0015] The two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the first substrate facing the second substrate, and the second electrode layer is arranged on a side of the second substrate facing the first substrate;

[0016] The first electrode layer includes a plurality of first excitation electrodes;

[0017] The second electrode layer includes a plurality of second excitation electrodes arranged side by side and spaced apart in the first direction. Each of the second excitation electrodes is arranged in a strip shape and extends along the second direction. The plurality of second excitation electrodes corresponds to the plurality of first excitation electrodes in a one-to-one manner.

[0018] In one embodiment, the two substrates include a first substrate close to the display panel and a second substrate far from the display panel;

[0019] The two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the first substrate facing the second substrate, and the second electrode layer is arranged on a side of the second substrate facing the first substrate;

[0020] The first electrode layer includes a plurality of first excitation electrodes;

[0021] The second electrode layer is disposed on the entire surface.

[0022] In one embodiment, the grooves are formed by laser etching, and the cross section of each of the grooves in the second direction is square.

[0023] In one embodiment, in the first direction, the width of the trench is greater than or equal to 20 μm.

[0024] In one embodiment, the two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer includes a plurality of the electrode patterns, and the second electrode layer is configured as a continuous and uninterrupted full-surface electrode;

[0025] A plurality of connecting pins are further provided on the first electrode layer, and each connecting pin corresponds to one of the electrode patterns.

[0026] In one embodiment, the liquid crystal layer of the light-control liquid crystal cell is configured as a liquid crystal grating or a liquid crystal lens.

[0027] Beneficial effect: In the display device provided by the present application, a light-controlling liquid crystal box is bonded to the light-emitting side of the display panel, and the light-controlling liquid crystal box includes two substrates and a liquid crystal layer arranged between the two substrates, and two electrode layers are respectively provided on the two opposite surfaces of the two substrates; by energizing and deenergizing the two electrode layers, the liquid crystal molecules in the liquid crystal layer are driven to switch between the initial state and the deflected state, thereby realizing the switching of the display device between 2D and 3D; after the display panel and the light-controlling liquid crystal are bonded, each column of pixels in the display panel forms an orthographic projection on the electrode layer, and each of the orthographic projections is formed on the electrode layer. There are two side edges in the first direction, and the electrode layer forms the etching positions at the positions corresponding to the side edges, and the grooves are cut according to the etching positions. The grooves extend along the second direction, thereby cutting the electrode layer to form a plurality of electrode patterns, and each electrode pattern corresponds to a column of the pixel positions; that is, according to the arrangement position and arrangement period of the pixels, the etching positions are determined on the electrode layer, and then the corresponding electrode patterns are cut, thereby improving the pairing accuracy of the display panel and the light-control liquid crystal box, thereby improving the accuracy of the information received by the left and right eyes, and improving the 3D imaging effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0029] Figure 1 A schematic diagram of the first structure of the display device provided in an embodiment of the present application;

[0030] Figure 2 A first process flow chart for etching trenches provided in an embodiment of the present application;

[0031] Figure 3 A diagram of the first manufacturing process for etching grooves provided in an embodiment of the present application;

[0032] Figure 4 for Figure 1 An enlarged schematic diagram of a part A in FIG;

[0033] Figure 5 for Figure 1 A schematic plan view of the first electrode layer (initial state) of the light-control liquid crystal cell;

[0034] Figure 6 for Figure 1 A schematic plan view of the first electrode layer (after etching) of the light-control liquid crystal cell;

[0035] Figure 7 A second structural diagram of the display device provided in an embodiment of the present application;

[0036] Figure 8 A second process flow chart for etching trenches provided in an embodiment of the present application;

[0037] Figure 9 A second manufacturing process diagram of the display device provided in an embodiment of the present application;

[0038] Figure 10 for Figure 7 An enlarged schematic diagram of part B in FIG;

[0039] Figure 11 for Figure 7 A schematic plan view of the first electrode layer (initial state) of the light-control liquid crystal cell;

[0040] Figure 12 for Figure 7 A schematic plan view of the first electrode layer (after etching) of the light-control liquid crystal cell;

[0041] Figure 13 A process flow chart of a display device provided in an embodiment of the present application;

[0042] Figure 14 A schematic diagram of a trench etched by yellow light provided in an embodiment of the present application;

[0043] Figure 15 A cross-sectional view of a trench etched by yellow light in the second direction provided in an embodiment of the present application;

[0044] Figure 16 A schematic diagram of a laser-etched groove provided in an embodiment of the present application;

[0045] Figure 17 A cross-sectional view of a laser-etched groove in the second direction provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0047] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this application and should not be construed as limiting this application. Furthermore, unless otherwise expressly provided or limited, a first feature being "above" or "below" a second feature merely indicates that the first feature is at a higher or lower level than the second feature, and does not indicate a direct connection.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only, and features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense without specifically limiting the connection method. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] The disclosure below provides many different embodiments for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present application. In addition, the examples of various specific processes and materials provided in the present application, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0051] An embodiment of the present application provides a display device, which may be a 2D / 3D switchable device, and is not specifically limited here.

[0052] See also Figure 1 and Figure 7The display device 100 includes a display panel 1 and a light-controlling liquid crystal box 2; the display panel 1 includes a plurality of pixels 11 arranged in an array, and the plurality of pixels 11 include a plurality of columns of pixels 11 arranged side by side and spaced apart in a first direction F1; the light-controlling liquid crystal box 2 is arranged on the light-emitting side of the display panel 1, and the light-controlling liquid crystal box 2 includes two substrates and a liquid crystal layer 23 arranged between the two substrates, and two electrode layers are respectively arranged on the two opposite surfaces of the two substrates; wherein, each column of the pixels 11 forms an orthographic projection on the electrode layer, and the orthographic projection has two side edges in the first direction F1; a plurality of grooves 26 are provided on at least one of the electrode layers to divide the electrode layer into a plurality of electrode patterns 27 insulated from each other, each of the electrode patterns 27 corresponds to a column of the pixels 11, and the edge of each of the electrode patterns 27 is arranged to overlap with the edge of the corresponding column of the pixels 11.

[0053] In the display device 100 provided in the present application, a light-controlling liquid crystal cell 2 is laminated to the light-emitting side of the display panel 1. The light-controlling liquid crystal cell 2 includes two substrates and a liquid crystal layer 23 disposed between the two substrates. Two electrode layers are disposed on opposite surfaces of the two substrates, respectively. By energizing and deenergizing the two electrode layers, the liquid crystal molecules in the liquid crystal layer 23 are driven to switch between an initial state and a deflected state, thereby enabling the display device 100 to switch between 2D and 3D. After the display panel 1 and the light-controlling liquid crystal are laminated, a plurality of electrode patterns 27 are cut into the electrode layer. Each electrode pattern 27 corresponds to a column of pixels 11, and the edge of each electrode pattern 27 is arranged to overlap the edge of the corresponding column of pixels 11. In other words, the corresponding electrode patterns 27 are cut into the electrode layer according to the arrangement position and arrangement period of the pixels 11, thereby improving the alignment accuracy of the display panel 1 and the light-controlling liquid crystal cell 2, thereby improving the accuracy of the information received by the left and right eyes, and enhancing the 3D imaging effect of the display device 100.

[0054] The present application does not impose any specific restrictions on the formation position of the electrode pattern 27. The electrode pattern 27 can be set on one electrode layer or on two electrode layers at the same time; the electrode pattern 27 can be set on the electrode layer close to the display panel 1 or on the electrode layer far away from the display panel 1.

[0055] The following description will be made by taking “arranging the electrode pattern 27 on the electrode layer close to the display panel 1 ” as an example.

[0056] This application does not impose any specific limitation on the structural form of the electrode pattern 27 .

[0057] See also Figures 1 to 6 In the first embodiment of the present application, the groove 26 is provided on the electrode layer, and the groove 26 extends along the second direction F2 and divides the electrode layer into a plurality of strip electrodes 271 insulated from each other, each of the strip electrodes 271 corresponds to a column of the pixels 11, and the edge of each of the strip electrodes 271 is arranged to overlap with the edge of the corresponding column of the pixels 11; wherein, the electrode pattern 27 includes the strip electrodes 271.

[0058] In this embodiment, when the display panel 1 and the light-controlling liquid crystal are laminated, the electrode layer is configured as a continuous, uninterrupted, full-surface electrode. After the display panel 1 and the light-controlling liquid crystal are laminated, grooves 26 are cut into the electrode layer. The grooves 26 extend along the second direction F2, dividing the electrode layer into a plurality of mutually insulated strip electrodes 271. Each strip electrode 271 extends along the second direction F2 and corresponds to a column of pixels 11. In other words, based on the arrangement position and arrangement period of the pixels 11, the entire electrode layer is divided into a plurality of strip electrodes 271, each strip electrode 271 corresponding to a column of pixels 11. This improves the alignment accuracy of the display panel 1 and the light-controlling liquid crystal cell 2, thereby improving the accuracy of the information received by the left and right eyes and enhancing the 3D imaging effect of the display device 100.

[0059] See also Figures 7 to 13 In the second embodiment of the present application, the electrode layer includes a plurality of first excitation electrodes 272 arranged side by side and spaced apart in the first direction F1, each first excitation electrode 272 is arranged in a strip shape and extends along the second direction F2; each column of the pixels 11 corresponds to M first excitation electrodes 272, and among the M first excitation electrodes 272, at least one of the two outermost first excitation electrodes 272 is provided with the groove 26 to separate the portions of the two outermost first excitation electrodes 272 that extend beyond the corresponding column of the pixels 11; wherein, the electrode pattern 27 includes M first excitation electrodes 272.

[0060] In this embodiment, an example is given in which the electrode layer is provided with N excitation electrodes 272. After the display panel 1 is bonded to the light-controlling liquid crystal, ideally, each column of the pixels 11 corresponds to four excitation electrodes 272. For example, the orthographic projection of the first column of pixels 11 on the electrode layer covers excitation electrodes 272 No. 1 to 4. However, during the actual bonding process, the light-controlling liquid crystal box 2 may be offset due to the manufacturing process. The side of the orthographic projection that should correspond to the edge of the excitation electrode No. 1 272 is offset to the excitation electrode No. 3 272, and the side of the orthographic projection that should correspond to the edge of the excitation electrode No. 4 272 is offset to the excitation electrode No. 7 272. The portions of the excitation electrode No. 3 272 and the excitation electrode No. 7 272 that exceed the pixels 11 in the column are cut off, thereby obtaining excitation electrodes 272 that are completely covered by the orthographic projection. These excitation electrodes 272 constitute an electrode pattern 27. By cutting the excitation electrode 272, the electrode pattern 27 corresponding to the position of each column of the pixels 11 is obtained. In this way, the pairing accuracy of the display panel 1 and the light-control liquid crystal box 2 can be improved, thereby improving the accuracy of the information received by the left and right eyes and improving the 3D imaging effect of the display device 100.

[0061] The present application does not impose any specific restrictions on the number of excitation electrodes 272. The number of excitation electrodes 272 can be selected based on the resolution of the display panel 1 and the 3D display requirements of the display device 100. In one embodiment, the number of excitation electrodes 272 is set to N, where N ≥ 100; that is, the number of excitation electrodes 272 can be 100, 200, 300, 400, or even more.

[0062] This application does not impose any specific restrictions on the locations of the first electrode layer 24 and the second electrode layer 25. In one embodiment, the two substrates include a first substrate 21 proximal to the display panel 1 and a second substrate 22 distal to the display panel 1; the first electrode layer 24 is disposed on the side of the first substrate 21 facing the second substrate 22, and the second electrode layer 25 is disposed on the side of the second substrate 22 facing the first substrate 21. The first electrode layer 24 includes a plurality of first excitation electrodes 272; the second electrode layer 25 includes a plurality of second excitation electrodes (not shown) spaced side by side in the first direction F1. Each second excitation electrode is arranged in a strip shape and extends along the second direction F2. The plurality of second excitation electrodes corresponds one-to-one to the plurality of first excitation electrodes 272.

[0063] In another embodiment, the two substrates include a first substrate 21 close to the display panel 1 and a second substrate 22 farther from the display panel 1; the first electrode layer 24 is disposed on a side of the first substrate 21 facing the second substrate 22, and the second electrode layer 25 is disposed on a side of the second substrate 22 facing the first substrate 21. The first electrode layer 24 includes a plurality of first excitation electrodes 272; and the second electrode layer 25 is disposed over the entire surface.

[0064] The present application does not limit the specific method for manufacturing the grooves 26. The grooves 26 can be formed by photolithography or laser etching. In one embodiment, the grooves 26 are formed by laser etching, and each groove 26 has a square cross-section along the second direction F2.

[0065] It can be known that laser etching is dry etching, and the width of the etched groove can be greater than or equal to 20μm, which is used to engrave the circuit. All processing is automatically controlled by software, with high product consistency and a yield rate of up to 99%. The minimum width of the groove 26 is set to 20μm, which can support the one-time simultaneous etching of silver paste circuits and ITO, and easily realize the etching of single-layer multi-point capacitive screen sensor circuits. In addition, during the laser etching process, the CCD (full name in English: Charge coupled Device, Chinese abbreviation: charge coupled device) image sensor element automatically searches for the target, and can process an area of ​​650mm×550mm at one time, with a splicing accuracy of ≤±3μm. At the same time, the laser etching equipment supports a variety of visual positioning features, 5 million pixels and 11 points, and the target capture time is less than 1 second, and the positioning accuracy is ≤±3μm. Therefore, using laser to etch the electrode layer can improve the accuracy of the etching position, thereby further improving the alignment accuracy of the display panel 1 and the light-control liquid crystal box 2, thereby improving the accuracy of the information received by the left and right eyes and enhancing the 3D imaging effect of the display device 100.

[0066] Also, see Figure 14 and Figure 15 When the groove 26 is etched using yellow light, the formation of the groove requires processes such as film coating, photoresist coating, exposure, development, etching, and removal of the photoresist layer. Therefore, the actual morphology of the groove 26 will change due to the influence of the process. The side wall of the groove 26 and its bottom wall are set at an angle, so that the cross-section of the groove 26 in the second direction F2 is a regular trapezoid or an inverted trapezoid.

[0067] See also Figure 16 and Figure 17When laser etching the groove 26, since laser etching mainly involves an ablation process, the etching effect can be adjusted by controlling the laser energy, gas, number of scans, and scan time, thereby making the actual shape of the groove 26 more straight and slightly melted. In other words, the sidewalls of the groove 26 etched by the laser are almost perpendicular to its bottom wall, so that the cross-section of the groove 26 in the second direction F2 is square.

[0068] In one embodiment, the two electrode layers include a first electrode layer 24 and a second electrode layer 25, the first electrode layer 24 includes a plurality of the electrode patterns 27, and the second electrode layer 25 is configured as a continuous and uninterrupted whole-surface electrode; a plurality of connecting pins 28 are also provided on the first electrode layer 24, and each connecting pin 28 corresponds to one of the electrode patterns 27; the second electrode layer 25 is provided on the entire surface, and only the first electrode layer 24 is cut, which can simplify the manufacturing process of the display device 100; and, the second electrode layer 25 serves as a common electrode layer, and the first electrode layer 24 serves as a multi-electrode layer, and each of the electrode patterns 27 is correspondingly provided with one connecting pin 28, which can ensure that each of the electrode patterns 27 on the first electrode layer 24 can be normally energized.

[0069] It should be noted that, in the actual manufacturing process, the connecting pins 28 are set before cutting the first electrode layer 24. Therefore, when cutting the first electrode layer 24, it is necessary to ensure that the connecting pins 28 are connected to each of the electrode patterns 27, so as to ensure that each of the electrode patterns 27 can be powered normally.

[0070] In one embodiment, the liquid crystal layer 23 of the light-control liquid crystal cell 2 is configured as a liquid crystal grating or a liquid crystal lens. It should be noted that a liquid crystal grating is a grating device based on the principle of geometric phase. It operates on circularly polarized light and features electro-optical and polarization tunability, allowing it to adjust the amplitude and phase of the incident light. Theoretically, the first-order diffraction efficiency of a liquid crystal grating can reach 100%. By varying the voltage and adjusting the grating period, the number of secondary diffraction images can be adjusted. Liquid crystal gratings are widely used in the field of holographic 3D displays, and can be used in a variety of scenarios, including optical waveguides, beam deflection, optical interconnects, augmented reality displays, and 3D displays. A liquid crystal lens is a special phase device that utilizes the continuously varying orientation distribution of liquid crystal molecules in a plane to shape and modulate the light beam. Compared to traditional liquid crystal lenses, liquid crystal geometric phase lenses can achieve "positive" and "negative" lens transitions by simply changing the polarization state of the incident light. The phase tunability of liquid crystal lenses offers new opportunities for holographic displays, potentially improving the quality of holographic 3D displays. Voltage regulation of the liquid crystal lens can also achieve switching between 2D and 3D images. These technologies have potential applications in healthcare, education, entertainment, advertising and other fields.

[0071] Based on the structure of the display device 100 described above, an embodiment of the present application further provides a method for manufacturing the display device 100 .

[0072] The manufacturing method of the display device 100 includes:

[0073] S10: providing a display panel 1, wherein the display panel 1 comprises a plurality of pixels 11 arranged in an array, and the plurality of pixels 11 comprises a plurality of columns of pixels 11 arranged side by side and spaced apart in a first direction F1;

[0074] S20: providing a light-control liquid crystal cell 2, wherein the light-control liquid crystal cell 2 comprises two substrates and a liquid crystal layer 23 disposed between the two substrates, and two electrode layers are disposed on two opposite surfaces of the two substrates respectively;

[0075] S30: attaching the light-controlling liquid crystal cell 2 to the light-emitting side of the display panel 1;

[0076] S40: Powering on the display panel 1 and determining the arrangement position and arrangement period of the pixels 11 according to the display image;

[0077] S50: determining an etching position on at least one of the electrode layers according to the arrangement positions and arrangement periods of the pixels 11;

[0078] S60 : performing laser etching on the electrode layer according to the etching positions to form a plurality of grooves 26 , and dividing the electrode layer into a plurality of electrode patterns 27 , wherein each of the electrode patterns 27 corresponds to a position of a column of the pixels 11 .

[0079] In this embodiment, after the display panel 1 is bonded to the light-controlling liquid crystal, each column of pixels 11 in the display panel 1 forms an orthographic projection on the electrode layer, and each of the orthographic projections has two side edges in the first direction F1. The electrode layer forms the etching position at the position corresponding to the side edge, and the groove 26 is cut according to the etching position. The groove 26 extends along the second direction F2, thereby cutting the electrode layer into a plurality of electrode patterns 27, and each electrode pattern 27 corresponds to the position of a column of pixels 11; that is, according to the arrangement position and arrangement period of the pixels 11, the etching position is determined on the electrode layer, and then the corresponding electrode pattern 27 is cut, thereby improving the pairing accuracy of the display panel 1 and the light-controlling liquid crystal box 2, thereby improving the accuracy of the information received by the left and right eyes, and improving the 3D imaging effect of the display device 100.

[0080] See also Figure 2 and Figure 3 , Figure 2 and Figure 3 This is the first embodiment of the etching trench 26 provided in the present application.

[0081] The two electrode layers include a first electrode layer 24 close to the display panel 1 and a second electrode layer 25 far from the display panel 1. The first electrode layer 24 and the second electrode layer 25 are both configured as continuous and uninterrupted full-surface electrodes in an initial state.

[0082] The step S50 of determining an etching position on at least one of the electrode layers according to the arrangement positions and arrangement periods of the pixels 11 includes:

[0083] S501: determining an orthographic projection position of an outermost column of pixels 11 on the first electrode layer 24 according to the arrangement positions of the pixels 11, wherein the orthographic projection has two sides in the first direction F1;

[0084] S502: Determine the first etching position on the first electrode layer 24 according to the two side edges;

[0085] S503: Powering off the display panel 1;

[0086] S504 : determining the remaining etching positions on the first electrode layer 24 in sequence according to the first etching position and the arrangement period of the pixels 11 .

[0087] In this embodiment, the entire electrode layer is divided into a plurality of strip electrodes 271 according to the arrangement position and arrangement period of the pixels 11, and each strip electrode 271 corresponds to a column of the pixels 11; in this way, the pairing accuracy of the display panel 1 and the light-control liquid crystal box 2 can be improved, thereby improving the accuracy of the information received by the left and right eyes, and improving the 3D imaging effect of the display device 100.

[0088] See also Figure 8 and Figure 9 , Figure 8 and Figure 9 This is the second embodiment of the trench etching provided by the present application.

[0089] The two electrode layers include a first electrode layer 24 close to the display panel 1 and a second electrode layer 25 away from the display panel 1. The first electrode layer 24 includes a plurality of excitation electrodes 272 arranged side by side and spaced apart in the first direction F1. Each of the excitation electrodes 272 is arranged in a strip shape and extends along the second direction F2.

[0090] The step S50 of determining an etching position on at least one of the electrode layers according to the arrangement positions and arrangement periods of the pixels 11 includes:

[0091] S501′: determining an orthographic projection position of each column of the pixels 11 on the first electrode layer 24 according to the arrangement position and arrangement period of the pixels 11, wherein the orthographic projection has two sides in the first direction F1;

[0092] S502 ′: determining the excitation electrode 272 to be laser etched and the etching position on the excitation electrode 272 according to the two side edges.

[0093] In this embodiment, the excitation electrode 272 is cut to obtain the electrode pattern 27 corresponding to the position of each column of the pixels 11. In this way, the pairing accuracy of the display panel 1 and the light-control liquid crystal box 2 can be improved, thereby improving the accuracy of the information received by the left and right eyes and improving the 3D imaging effect of the display device 100.

[0094] The present application does not impose any specific restrictions on the number of excitation electrodes 272. The number of excitation electrodes 272 can be selected based on the resolution of the display panel 1 and the 3D display requirements of the display device 100. In one embodiment, the number of excitation electrodes 272 is set to N, where N ≥ 100; that is, the number of excitation electrodes 272 can be 100, 200, 300, 400, or even more.

[0095] The present application does not impose any specific restrictions on the etching method of the groove 26. The etching method of the groove 26 can be yellow light etching or laser etching. Preferably, the step S60 of etching the electrode layer to form a plurality of grooves according to the etching position includes:

[0096] S601: performing laser etching on the electrode layer according to the etching positions to form a plurality of grooves.

[0097] It can be known that laser etching is dry etching, and the width of the etched groove can be greater than or equal to 20μm, which is used to engrave the circuit. All processing is automatically controlled by software, with high product consistency and a yield rate of up to 99%. The minimum width of the groove 26 is set to 20μm, which can support the one-time simultaneous etching of silver paste circuits and ITO, and easily realize the etching of single-layer multi-point capacitive screen sensor circuits. In addition, during the laser etching process, the CCD (full name in English: Charge coupled Device, Chinese abbreviation: charge coupled device) image sensor element automatically searches for the target, and can process an area of ​​650mm×550mm at one time, with a splicing accuracy of ≤±3μm. At the same time, the laser etching equipment supports a variety of visual positioning features, 5 million pixels and 11 points, and the target capture time is less than 1 second, and the positioning accuracy is ≤±3μm. Therefore, using laser to etch the electrode layer can improve the accuracy of the etching position, thereby further improving the alignment accuracy of the display panel 1 and the light-control liquid crystal box 2, thereby improving the accuracy of the information received by the left and right eyes and enhancing the 3D imaging effect of the display device 100.

[0098] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0099] The above is a detailed introduction to a display device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a plurality of pixels arranged in an array, the plurality of pixels comprising a plurality of columns of pixels arranged side by side and spaced apart in a first direction; as well as, a light-controlling liquid crystal cell, the light-controlling liquid crystal cell being arranged on the light-emitting side of the display panel, the light-controlling liquid crystal cell comprising two substrates and a liquid crystal layer arranged between the two substrates, two electrode layers being respectively arranged on two opposing surfaces of the two substrates; At least one of the electrode layers is provided with a plurality of grooves for dividing the electrode layer into a plurality of mutually insulated electrode patterns, each of the electrode patterns corresponds to a column of the pixels, and an edge of each electrode pattern overlaps an edge of the corresponding column of pixels; After the display panel is bonded to the light-controlling liquid crystal, each column of pixels in the display panel forms an orthographic projection on the electrode layer, each of the orthographic projections has two side edges in the first direction, and the electrode layer forms an etching position at the position corresponding to the side edge, and the groove is cut according to the etching position, and the groove extends along the second direction.

2. The display device according to claim 1, wherein The groove is provided on the electrode layer, and the groove extends along the second direction and divides the electrode layer into a plurality of strip electrodes insulated from each other, each of the strip electrodes corresponds to a column of pixels, and an edge of each strip electrode is overlapped with an edge of the corresponding column of pixels; Wherein, the electrode pattern includes the strip electrodes.

3. The display device according to claim 1, wherein The electrode layer includes a plurality of first excitation electrodes arranged side by side and spaced apart in the first direction, each of the first excitation electrodes is arranged in a strip shape and extends along the second direction; Each column of pixels corresponds to M first excitation electrodes, and among the M first excitation electrodes, at least one of the two outermost first excitation electrodes is provided with the groove to separate portions of the two outermost first excitation electrodes that extend beyond the pixels in the corresponding column; Wherein, the electrode pattern includes M first excitation electrodes.

4. The display device according to claim 3, wherein The number of the excitation electrodes is set to N, where N≥100.

5. The display device according to claim 3, wherein The two substrates include a first substrate close to the display panel and a second substrate far away from the display panel; The two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the first substrate facing the second substrate, and the second electrode layer is arranged on a side of the second substrate facing the first substrate; The first electrode layer includes a plurality of first excitation electrodes; The second electrode layer includes a plurality of second excitation electrodes arranged side by side and spaced apart in the first direction. Each second excitation electrode is arranged in a strip shape and extends along the second direction. The plurality of second excitation electrodes corresponds to the plurality of first excitation electrodes in a one-to-one manner.

6. The display device according to claim 3, wherein: The two substrates include a first substrate close to the display panel and a second substrate far away from the display panel; The two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the first substrate facing the second substrate, and the second electrode layer is arranged on a side of the second substrate facing the first substrate; The first electrode layer includes a plurality of first excitation electrodes; The second electrode layer is disposed on the entire surface.

7. The display device according to claim 2 or 3, wherein: The grooves are formed by laser etching, and the cross section of each groove in the second direction is square.

8. The display device according to claim 7, wherein: In the first direction, the width of the groove is greater than or equal to 20 μm.

9. The display device according to claim 1, wherein The two electrode layers include a first electrode layer and a second electrode layer, the first electrode layer includes a plurality of the electrode patterns, and the second electrode layer is configured as a continuous and uninterrupted full-surface electrode; A plurality of connecting pins are further provided on the first electrode layer, and each connecting pin corresponds to one of the electrode patterns.

10. The display device according to claim 1, wherein The liquid crystal layer of the light-control liquid crystal cell is configured as a liquid crystal grating or a liquid crystal lens.

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