Liquid crystal display panel, liquid crystal box forming display device and box forming process

Abstract

The invention discloses a liquid crystal display panel, a liquid crystal box display device and a box forming process. The liquid crystal display panel, the liquid crystal box display device and the box forming process comprise a first substrate, a second substrate and a supporting microstructure layer located between the first substrate and the second substrate. On one hand, on the basis of the depth ratio provided by the supporting microstructures and the inner support formed by the supporting balls in the space, the inconsistent thickness of the supporting microstructures is avoided, the time required for liquid crystal vertical flow or liquid crystal overturning response is shortened, and the frequent occurrence probability of phenomena such as abnormal displayed images is reduced; meanwhile, direct switching between a peep-proof state view angle and a sharing state view angle can be achieved on the same liquid crystal display panel based on the change of the emitting direction of the backlight beam, and the liquid crystal display panel can be flexibly applied to different occasions and is high in practicability; on the other hand, as the refractive index of the structure body is the same as the minimum extraordinary light refractive index of the positive liquid crystal, the viewing angle is further opened, and the display effect is enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display panel, and also relates to a liquid crystal box display device and a box process. Background Art

[0002] The microstructured liquid crystal box display device is an advanced display technology that uses the characteristics of liquid crystal materials and the photoelectric effect to display information. This device usually includes key components such as an electrode layer, a liquid crystal material layer, nanocolumns, and a silicon-based substrate layer. Its core advantage lies in high light transmittance and easily controllable liquid crystal box thickness, that is, by controlling the arrangement of liquid crystal molecules to adjust the passage of light to form an image. This technology relies on two transparent electrode plates and the liquid crystal material sandwiched in between. The arrangement of the liquid crystal material changes under the action of the electric field, thereby affecting the polarization state of light passing through the liquid crystal layer.

[0003] For example: CN106094068B (hereinafter referred to as Document 1), which involves an electro-optical material cylindrical lens array structure, which includes: a first substrate, including a first electrode layer; a second substrate, arranged opposite to the above-mentioned first electrode layer, the above-mentioned second substrate includes a second electrode layer, and there is a gap between the above-mentioned first electrode layer and the above-mentioned second electrode layer; a plano-convex lens assembly, arranged in the above-mentioned gap, and the above-mentioned plano-convex lens assembly is arranged on the surface of the above-mentioned first electrode layer, the above-mentioned plano-convex lens assembly includes a convex lens array, the above-mentioned convex lens array includes a plurality of convex lenses arranged in sequence, and each of the above-mentioned convex lenses has a convex surface; a sealing portion, arranged in the above-mentioned gap, and the above-mentioned second electrode layer, the above-mentioned plano-convex lens assembly and the above-mentioned sealing portion form a closed space, or the above-mentioned first electrode layer, the above-mentioned second electrode layer and the above-mentioned sealing portion form a closed space; a plurality of electro-optical material molecules, each of the above-mentioned electro-optical material molecules is arranged in the above-mentioned closed space; at least one protrusion is arranged on the surface of the above-mentioned second electrode layer close to the above-mentioned electro-optical material molecules. Another example: CN105589228B (hereinafter referred to as Document 2), the viewing angle regulator involved includes a substrate, an electrode, a polymer, and a negative liquid crystal, wherein the substrate includes an upper substrate and a lower substrate; the electrode is placed between the upper substrate and the lower substrate, and includes an upper electrode bonded to the upper substrate, and a lower electrode bonded to the lower substrate; the polymer is placed between the upper electrode and the lower electrode, and is bonded to the upper electrode, and the side of the polymer away from the upper electrode is a periodically arranged long groove structure, and the negative liquid crystal is filled between the polymer and the lower electrode, and the refractive index of the polymer is the same as the maximum extraordinary refractive index of the negative liquid crystal. However, the disclosure of the above document has the following technical defects: 1) The columnar structures in Documents 1 and 2 have a relatively small depth-width ratio, and have limited splitting effect on the light viewing angle, that is, the splitting degree is small, and it is impossible to directly switch between the anti-peeping state viewing angle and the sharing state viewing angle on the same LCD panel based on the change in the direction of the backlight beam (the anti-peeping state and the sharing state are two different display states of the LCD screen, which are mainly used in occasions where privacy needs to be protected. The specific anti-peeping state means that the viewing angle of the display screen is limited to a smaller range, so that the screen content can only be clearly seen at the front or very close to the front angle, which can prevent others from peeping. The sharing state means that the viewing angle of the display screen is expanded, so that the screen content can be clearly seen even in a larger angle range, which is suitable for multiple people to watch at the same time); 2) The internal supporting microstructure formed in Document 1 cannot ensure the separation between the light-transmitting component and the electrode layer, and Documents 1 and 2 cannot provide uniform supporting force (i.e., the supporting force is insufficient or uneven), resulting in inconsistent thickness of the supporting microstructure, i.e., slow response time of liquid crystal vertical flow or liquid crystal flipping, and frequent abnormalities in displayed images. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an improved liquid crystal display panel, and also relates to a liquid crystal box display device and a box process thereof.

[0005] To achieve the above object, the present invention adopts the following scheme: A liquid crystal display panel comprises a first substrate, a second substrate, and a supporting microstructure layer located between the first substrate and the second substrate, wherein the supporting microstructure layer comprises a structural body with a concave-convex supporting area formed on the surface; a plurality of space-supporting balls located between the first substrate and the structural body; and liquid crystal molecules filled in the filling area formed by the first substrate, the structural body and the space-supporting balls, wherein the concave-convex supporting area is formed by a plurality of spaced ridges, and a lower groove with an open top and a closed bottom is formed between each two adjacent ridges, and each space-supporting ball is tangent to the open groove wall of the lower groove from both sides and emerges from the lower groove from the top to align with the top surface and tangent to the inner wall of the first substrate; and the center of each space-supporting ball is located between the vertex where the ridge and the two cross-sections of the space-supporting ball meet and the groove bottom of the lower groove; the liquid crystal molecules are positive liquid crystals, and the refractive index of the structural body is the same as the minimum extraordinary refractive index of the positive liquid crystal.

[0006] Preferably, a plurality of space support balls are arranged in arrays in each lower groove, so that the support strength formed is sufficient and relatively balanced, and the thickness of the liquid crystal display panel is further controlled.

[0007] Furthermore, a plurality of space balls are distributed between the lower groove and the first substrate in a rectangular array, so as to facilitate uniform distribution of the space balls.

[0008] According to a specific implementation and preferred aspect of the present invention, the diameters of the balls in each space are equal, and the distance from the center of the balls in each space to the bottom of the lower groove is D1, and the distance from the center of the balls to the first substrate is D2, wherein D1>D2, and the units of D1 and D2 are both μm. Based on the positional relationship between the center of the ball and the space ball, the supporting microstructure is effectively separated from the first substrate, and the formed internal supporting structure is stable and uniform (improving the uniformity of the liquid crystal cell thickness and the thickness in the plane), thereby improving the problems of liquid crystal vertical flow and slow liquid crystal flip response time.

[0009] In some specific embodiments, D1= R / cosθ, D2= R, β=180°-α, θ= β / 2, where R is the radius of the ball in each space, and the unit is μm; β is the angle formed by the line connecting the center of the ball in each space to the two lower groove tangent points; α is the angle formed by the intersection of each ridge from both sides and along the tangent line of the ball in the corresponding space. Based on the angle relationship, the optimal position and optimal radius of the center of the ball are further limited, that is, while reducing its own thickness and being able to provide stable support, the depth ratio formed by the structural body is optimally more conducive to the splitting of the light viewing angle, so that the liquid crystal display panel can simultaneously meet the anti-peeping state viewing angle and the sharing state viewing angle. In other words, by changing the direction of the light beam, the anti-peeping state viewing angle and the sharing state viewing angle of the same liquid crystal display panel can be switched to meet the needs of display functions under different working conditions.

[0010] Furthermore, the vertical distance from the center of the supporting ball in each space to the intersection of the angle α is m1, and the vertical distance from the bottom surface of the supporting ball in each space to the bottom of the lower groove is m2, where m2>m1, and the units of m1 and m2 are both μm. Based on the vertical distance to assist in limiting the position of the center of the ball, the height, angle, space ball diameter and in-plane height parameters of the supporting microstructure layer are uniformly designed to achieve the purpose of supporting the space ball with the two side walls of the lower groove tangent to each other, thereby improving the problems of liquid crystal vertical flow and slow liquid crystal flip response time.

[0011] In some specific embodiments, H=D1+D3+R, wherein D3 is the thickness from the bottom of each lower groove to the second substrate, and the unit is μm; H is the thickness of the supporting microstructure layer, and the unit is μm. The thickness of the supporting microstructure layer is further set to achieve the best display effect.

[0012] According to another specific implementation and preferred aspect of the present invention, in the orthographic projection of the ridge length direction, the groove wall of the lower groove is a straight line, an inner arc line or an outer arc line. As long as an open groove opening upward is formed and can accommodate the middle and lower part of the space ball, the shape is not limited.

[0013] Preferably, the angle formed by two extension lines extending from the tangent point between the supporting ball and the groove wall to the bottom of each lower groove is 50° to 100°. Generally, it is most convenient to implement when it is close to 90°.

[0014] According to another specific implementation and preferred aspect of the present invention, the tops of the ridges are flush or have height differences. Generally, they are flush, and the main purpose is to facilitate processing and assembly of the space ball.

[0015] Preferably, the top shapes of the convex edges are the same. Considering the convenience of processing and forming, and the greater practicality, in general, the convex edges are sharp corners, rounded corners, flat corners or missing corners in the orthographic projection in the length direction, and the missing corners can be composed of multiple sharp corners, such as a sawtooth shape.

[0016] In addition, the first substrate includes a first transparent plate body and a first transparent electrode, and the first transparent electrode is located on the inner wall of the first transparent plate body; the second substrate includes a second transparent plate body and a second transparent electrode, and the second transparent electrode is located on the inner wall of the second transparent plate body.

[0017] In some embodiments, positive liquid crystal is used, and the component of the dielectric constant of the positive liquid crystal along the long axis of the liquid crystal molecule (ε∥) is greater than the component perpendicular to the long axis of the liquid crystal molecule (ε⊥), Δε=ε∥-ε⊥>0. Under the action of an external electric field, the long axis of the positive liquid crystal molecule will rotate in a direction parallel to the electric line. The component of the dielectric constant of the negative liquid crystal along the long axis of the liquid crystal molecule is less than the component perpendicular to the long axis of the liquid crystal molecule, that is, Δε<0. Under the action of an external electric field, the long axis of the negative liquid crystal molecules will rotate in a direction perpendicular to the electric lines, that is, when Δε>0 is powered on, the liquid crystal molecules are arranged along the direction of the electric field. At the same time, sufficient space is formed based on the spacing of the space ball, so that the positive liquid crystal can speed up the response time of the box; and the refractive index of the UV resin is the same as the minimum extraordinary refractive index of the negative liquid crystal. The reason is that the refractive index of the UV resin currently available on the market for printing is 1.35~1.67 after curing, and the liquid crystal no or ne in this range must be selected between 1.35~1.67, then the refractive index difference △n of the negative liquid crystal is only between 0.12~0.2. Therefore, the microstructure design combined with the positive liquid crystal △n selection can further increase the viewing angle.

[0018] Another technical solution of the present invention is: a liquid crystal box display device, which includes the above-mentioned liquid crystal display panel and a backlight module attached to the back of the second substrate, wherein the backlight module changes the light emission direction to achieve the switching of the liquid crystal display panel between the anti-peeping state viewing angle and the sharing state viewing angle.

[0019] Another technical solution of the present invention is: a process for forming a box of a liquid crystal display device, wherein the liquid crystal display device is the above-mentioned liquid crystal box display device, and comprises the following steps: S1. LCD panel assembly First, two transparent glasses of the same size are selected, and then the surfaces are cleaned and an electrode coating is formed by coating or sputtering, and the electrode coating and the transparent glass respectively form the first substrate and the second substrate; secondly, a structural body with a concave-convex support area and a plurality of space support balls are used to place the structural body between the first substrate and the second substrate, and each space support ball is tangent to the groove wall of the lower groove from both sides of the lower part and tangent to the back of the first substrate from the top; finally, a rubber frame is used to seal and fill the filling area formed by the first substrate, the structural body and the space support balls with positive liquid crystal; S2. Backlight module assembly A backlight module capable of changing the direction of the light beam is mounted on the surface of the second substrate.

[0020] Preferably, in step S1, the space support balls are distributed in an array on the back side of the first substrate and / or in the lower groove of the structural body by spraying or adhering.

[0021] Due to the application of the above-mentioned technology and equipment solutions, the present invention has the following advantages compared with the prior art: In the existing liquid crystal display panels, on the one hand, the internal supporting microstructure cannot ensure the separation between the light-transmitting component and the electrode layer, and cannot provide uniform supporting force (that is, the supporting force is insufficient or uneven), resulting in inconsistent thickness of the supporting microstructure, that is, slow response time of liquid crystal vertical flow or liquid crystal flipping, and frequent abnormalities in the displayed image; on the other hand, the columnar structure is relatively small in depth and width, and has limited splitting effect on the light viewing angle, that is, the degree of splitting is small, and it is impossible to directly switch between the anti-peeping state viewing angle and the sharing state viewing angle on the same liquid crystal display panel based on the change in the emission direction of the backlight beam. Therefore, it cannot be used in occasions where privacy protection is required, etc., and the present application designs the liquid crystal display panel as a whole, cleverly solving the shortcomings and defects of the prior art. After adopting the liquid crystal display panel, the substrate and the structural body are separated and the position of the ball center is determined based on the support ball in the space. Under the premise of setting restrictions so that it satisfies stable and uniform support, the depth ratio of the supported microstructure is further improved, and a new microstructure is formed. At the same time, the liquid crystal molecules are positive liquid crystals, and the refractive index of the structure body is the same as the minimum extraordinary refractive index of the positive liquid crystal. Therefore, on the one hand, based on the depth ratio provided by the supporting microstructure and the internal support formed by the supporting balls in the space, the present invention not only avoids the inconsistent thickness of the supporting microstructure, but also reduces the time required for the vertical flow of liquid crystal or the flip response of liquid crystal and the frequent probability of abnormal displayed images. At the same time, based on the change in the direction of the backlight beam emitted, it can realize direct switching between the anti-peeping state viewing angle and the sharing state viewing angle on the same liquid crystal display panel, which can be flexibly applied to different occasions and has strong practicality. On the other hand, based on the refractive index of the structure body being the same as the minimum extraordinary refractive index of the positive liquid crystal, the viewing angle is further opened and the display effect is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional view of a liquid crystal display panel in Example 1; Figure 2 It is an enlarged schematic diagram of the structure of Example 1; Figure 3 Optical simulation diagrams of anti-peep state (left) and sharing state (right); Figure 4 This is a display effect diagram of liquid crystal vertical flow in the prior art; Figure 5 This is a display effect diagram of the prior art in which the liquid crystal arrangement is disordered; Figure 6 This is a display effect diagram of Example 1 in which there is no vertical flow of liquid crystal and the arrangement is chaotic; Figure 7 is a schematic cross-sectional view of a liquid crystal display panel in Example 2; Figure 8 It is an enlarged schematic diagram of the structure of Example 2; Fig. 9 is a schematic cross-sectional view of a liquid crystal display panel in Example 3; Fig.10 It is an enlarged schematic diagram of the structure of Example 3; Fig.11 is a schematic cross-sectional view of a liquid crystal display panel in Example 4; Fig.12 It is an enlarged schematic diagram of the structure of Example 4; Fig.13 is a schematic cross-sectional view of a liquid crystal cell display device of Example 5; Fig.14 This is a schematic diagram of the display effect of the sharing state under the same viewing angle; Fig.15 Schematic diagram of the anti-peeping display effect at the same viewing angle; Wherein: ①, liquid crystal display panel; 1, first substrate; 10, first transparent plate body; 11, first transparent electrode; 2, second substrate; 20, second transparent plate body; 21, second transparent electrode; 3, supporting microstructure layer; 30, structural body; 300, convex ridge; 301, lower groove; 31, space ball; 32, liquid crystal molecules; ②, backlight module. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method. Example 1

[0028] like Figure 1 and Figure 2 As shown, the liquid crystal display panel of this embodiment includes a first substrate 1 , a second substrate 2 , and a supporting microstructure layer 3 located between the first substrate 1 and the second substrate 2 .

[0029] Specifically, the first substrate 1 includes a first transparent plate body 10 and a first transparent electrode 11, and the first transparent electrode 11 is located on the inner wall of the first transparent plate body 10; the second substrate 2 includes a second transparent plate body 20 and a second transparent electrode 21, and the second transparent electrode 21 is located on the inner wall of the second transparent plate body 20; the supporting microstructure layer 3 includes a structural body 30 with a concave and convex supporting area formed on the surface; a plurality of space supporting balls 31 located between the first substrate 1 and the structural body 30; and liquid crystal molecules 32 filled in the filling area formed by the first substrate 1, the structural body 30 and the space supporting balls 31.

[0030] In some specific embodiments, the structural body 30 is a UV resin polymer, and the surface concave-convex support area is formed by a plurality of spaced-apart ridges 300, and a lower groove 301 with an open top and a closed bottom is formed between each two adjacent ridges 300. The supporting ball 31 in each space is tangent to the open groove wall of the lower groove 301 on both sides, and emerges from the lower groove 301 from the top to align with the top surface and fit tangent to the inner wall of the first substrate 1.

[0031] In this example, multiple space balls 31 are arranged in an array in each lower groove 301. The support force formed in this way is sufficient and relatively balanced, and the thickness of the liquid crystal display panel is further controlled. Furthermore, multiple space balls 31 are distributed in a rectangular array between the lower groove 301 and the first substrate 1. This facilitates the uniform distribution of space balls. The ball diameters of each space ball 31 are equal, and the distance from the center of each space ball 31 to the bottom of the lower groove 301 is D1, and the distance from the center of each space ball 31 to the first substrate 1 is D2, where D1>D2, and the units of D1 and D2 are both μm. Based on the positional relationship between the center of the ball and the space ball 31 (space ball) tangent to each other, the supporting microstructure layer 3 is effectively separated from the first substrate 1, and the formed internal support structure is stable and uniform (improving the uniformity of the liquid crystal box thickness and the thickness in the plane), thereby improving the problems of liquid crystal vertical flow and slow liquid crystal flip response time. At the same time, D1= R / cosθ, D2= R, β=180°-α, θ= β / 2, where R is the radius of each space ball 31, and the unit is μm; β is the angle formed by the line connecting the center of each space ball 31 to the tangent points of the two lower grooves 301; α is the angle formed by the intersection of each ridge 300 from both sides and along the corresponding space ball tangent. Based on the angle relationship, the optimal position and optimal radius of the center of the ball are further limited, that is, while reducing its own thickness and being able to provide stable support, it is best to make the depth ratio formed by the structural body 30 more conducive to the splitting of the light viewing angle, so that the liquid crystal display panel can simultaneously meet the anti-peeping state viewing angle and the sharing state viewing angle (combined with Figures 3 to 6), in other words, by changing the direction of the light beam, the same liquid crystal display panel can be switched between the anti-peeping state and the sharing state to meet the needs of display functions under different working conditions. The vertical distance from the center of the ball 31 in each space to the intersection of the angle α is m1, and the vertical distance from the bottom surface of the ball 31 in each space to the bottom of the lower groove 301 is m2, where m2>m1, and the units of m1 and m2 are both μm. Based on the vertical distance to assist in limiting the position of the center of the ball, the height, angle, space ball diameter and in-plane height parameters of the supporting microstructure layer 3 are uniformly designed to achieve the purpose of supporting the space ball with the two side walls of the lower groove tangent to each other, thereby improving the problems of liquid crystal vertical flow and slow liquid crystal flip response time; in addition, the center of the ball 31 in each space is located between the intersection vertex of the two side surfaces of the ridge 300 and the bottom of the lower groove 301; H=D1+D3+R, where D3 is the thickness from the bottom of each lower groove to the second substrate, and the unit is μm; H is the thickness of the supporting microstructure layer, and the unit is μm. The thickness of the supporting microstructure layer is further set to achieve the best display effect.

[0032] In some specific embodiments, based on the orthographic projection of the length direction of the ridge 300, the groove wall of the lower groove 301 is a straight line, an inner arc line or an outer arc line, and the shape is not limited as long as an open groove opening upward is formed and can accommodate the lower and middle parts of the space ball. In this example, the groove wall is a straight line. At the same time, the angle formed by the two extension lines extending from the tangent point of the space ball 31 and the groove wall to the bottom of each lower groove 301 is 50°~100°. In this example, the angle formed by the two extension lines is 90°, that is, the above-mentioned α=β=90°; θ=45°.

[0033] In this example, the tops of the ridges 300 are flush, which is mainly for the convenience of processing and assembly of the space ball. At the same time, the tops of the ridges have the same shape and are sharp in the orthographic projection along the length direction of the ridges 300.

[0034] In addition, the liquid crystal molecules 32 are positive liquid crystals, and the refractive index of the structural body 30 is the same as the minimum extraordinary refractive index of the positive liquid crystal. The positive liquid crystal used is that the component of the dielectric constant of the positive liquid crystal along the long axis direction of the liquid crystal molecule (ε∥) is greater than the component perpendicular to the long axis direction of the liquid crystal molecule (ε⊥), Δε=ε∥-ε⊥>0. Under the action of an external electric field, the long axis of the positive liquid crystal molecule will rotate in a direction parallel to the electric line. The component of the dielectric constant of the negative liquid crystal along the long axis direction of the liquid crystal molecule is less than the component perpendicular to the long axis direction of the liquid crystal molecule, that is, Δε<0. Under the action of an external electric field, the long axis of the negative liquid crystal molecules will rotate in a direction perpendicular to the electric lines, that is, when Δε>0 is energized, the liquid crystal molecules are arranged along the direction of the electric field. At the same time, sufficient space is formed based on the spacing of the space ball, so that the positive liquid crystal can speed up the response time of the box; and the refractive index of the UV resin (structural body 30) is the same as the minimum extraordinary refractive index of the negative liquid crystal. The reason is that the refractive index of the UV resin currently available on the market for printing is 1.35~1.67 after curing, and the liquid crystal no or ne in this range should be selected between 1.35~1.67, then the refractive index difference △n of the negative liquid crystal is only between 0.12~0.2. Therefore, the microstructure design is combined with the positive liquid crystal △n selection to achieve the effect of further opening the viewing angle. Example 2

[0035] like Figure 7 and Figure 8 As shown, the structure of the liquid crystal display panel involved in this embodiment is basically the same as that of the embodiment 1, except that in this embodiment, the top of each ridge 300 is rounded in the orthographic projection in the length direction. Example 3

[0036] like Fig. 9 and Fig.10 As shown, the structure of the liquid crystal display panel involved in this embodiment is basically the same as that of the embodiment 1, except that in this embodiment, the top of each ridge 300 is in a flat angle shape in the orthographic projection in the length direction. Example 4

[0037] like Fig.11 and Fig.12 As shown, the structure of the liquid crystal display panel involved in this embodiment is basically the same as that of embodiment 1, except that in this embodiment, the top of each ridge 300 is notched in the orthographic projection in the length direction. Specifically, the notch is composed of multiple sharp corners, and of course, it can also be composed of multiple rounded corners. Example 5

[0038] like Figures 13 to 15As shown, the liquid crystal box display device of this embodiment includes a liquid crystal display panel ① with the same structure as that of Example 1, and a backlight module ② adhered to the back of the second substrate 2, wherein the light emission direction is changed based on the backlight module ② to realize the switching of the liquid crystal display panel ① between the anti-peeping state viewing angle and the sharing state viewing angle.

[0039] In some specific implementations, the backlight module ② is a conventional light emitting diode, and the cell forming process of the liquid crystal cell forming display device includes the following steps: S1. LCD panel assembly First, two transparent glasses of the same size are selected, and then the surfaces are cleaned and an electrode coating is formed by coating or sputtering, and the electrode coating and the transparent glass form the first substrate and the second substrate respectively; secondly, a structural body with a concave-convex support area and a plurality of space support balls are used to place the structural body between the first substrate and the second substrate, and each space support ball is tangent to the groove wall of the lower groove from both sides of the lower part and tangent to the back of the first substrate from the top; finally, a rubber frame is used to seal and fill the filling area formed by the first substrate, the structural body and the space support balls with positive liquid crystal; S2. Backlight module assembly A backlight module capable of changing the direction of the light beam is mounted on the surface of the second substrate.

[0040] Furthermore, in step S1, the space support balls are distributed in an array on the back side of the first substrate and / or in the lower groove of the structural body by spraying or adhering.

[0041] In summary, after adopting the liquid crystal display panel, the substrate and the structural body are separated and the position of the ball center is limited based on the space-supporting ball, so that it can meet the premise of stable and uniform support, and the depth ratio of the supported microstructure is further improved, and a new microstructure is formed. At the same time, the liquid crystal molecules are positive liquid crystals, and the refractive index of the structural body is the same as the minimum extraordinary refractive index of the positive liquid crystal. Therefore, on the one hand, based on the depth ratio provided by the supporting microstructure and the inner support formed by the space-supporting ball, the present invention not only avoids the inconsistency of the thickness of the supporting microstructure, but also reduces the time required for the liquid crystal vertical flow or liquid crystal flip response and the probability of frequent occurrence of abnormal displayed images. At the same time, based on the change of the direction of the backlight beam emitted, it can realize the direct switching between the anti-peeping state viewing angle and the sharing state viewing angle on the same liquid crystal display panel, which can be flexibly applied to different occasions and has strong practicality; on the other hand, based on the refractive index of the structural body being the same as the minimum extraordinary refractive index of the positive liquid crystal, the viewing angle is further opened and the display effect is enhanced; on the third aspect, based on the provided anti-peeping state and sharing state optical simulation diagrams and actual viewing angle effect diagrams, it can be seen that the screen has no problems of liquid crystal vertical flow and chaotic arrangement, and the state switching between the anti-peeping state and the sharing state can be directly performed at the same viewing angle.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid crystal display panel, comprising a first substrate, a second substrate, and a supporting microstructure layer located between the first substrate and the second substrate, characterized in that: The supporting microstructure layer includes a structural body with a concave-convex supporting area formed on the surface; a plurality of space-supporting balls located between the first substrate and the structural body; liquid crystal molecules filled in the filling area formed by the first substrate, the structural body and the space-supporting balls, wherein the concave-convex supporting area is formed by a plurality of spaced-apart ridges, and a lower groove with an open top and a closed bottom is formed between each two adjacent ridges, each space-supporting ball is tangent to the open groove wall of the lower groove from both sides, emerges from the lower groove from the top to align with the top surface and tangent to the inner wall of the first substrate, and the center of each space-supporting ball is located between the vertex of the intersection of the two cross-sections of the ridge and the space-supporting ball and the groove bottom of the lower groove; the liquid crystal molecules are positive liquid crystals, and the refractive index of the structural body is the same as the minimum extraordinary refractive index of the positive liquid crystal.

2. The liquid crystal display panel according to claim 1, characterized in that: A plurality of the space-supporting balls are arranged in arrays in each of the lower grooves.

3. The liquid crystal display panel according to claim 2, characterized in that: A plurality of the space support balls are distributed in a rectangular array between the lower groove and the first substrate.

4. The liquid crystal display panel according to claim 1, characterized in that: The diameters of the balls in each space are equal, and the distance from the center of the balls in each space to the bottom of the lower groove is D1, and the distance from the center of the balls to the first substrate is D2, wherein D1>D2, and the units of D1 and D2 are both μm.

5. The liquid crystal display panel according to claim 4, characterized in that: D1= R / cosθ, D2= R, β=180°-α, θ=β / 2, where R is the radius of the ball in each space, and the unit is μm; β is the angle formed by the lines connecting the center of the ball in each space to the two tangent points of the lower grooves; α is the angle formed by the intersection of each ridge from both sides and along the tangent lines of the ball in the corresponding space.

6. The liquid crystal display panel according to claim 5, characterized in that: The vertical distance from the center of the ball in each space to the intersection of the angle α is m1, and the vertical distance from the bottom surface of the ball in each space to the bottom of the lower groove is m2, where m2>m1, and the units of m1 and m2 are both μm.

7. The liquid crystal display panel according to claim 6, characterized in that: H=D1+D3+R, wherein D3 is the thickness from the bottom of each lower groove to the second substrate, and the unit is μm; H is the thickness of the supporting microstructure layer, and the unit is μm.

8. The liquid crystal display panel according to claim 1, characterized in that: In the orthographic projection in the length direction of the convex ridge, the groove wall of the lower groove is a straight line, an inner arc line or an outer arc line.

9. The liquid crystal display panel according to claim 8, characterized in that: The angle formed by two extension lines extending from the tangent point between the supporting ball and the groove wall in the space to the bottom of each lower groove is 50°~100°.

10. The liquid crystal display panel according to claim 1, characterized in that: The top ends of the ridges are flush or have height differences.

11. The liquid crystal display panel according to claim 1, characterized in that: The top shapes of the convex ridges are the same.

12. The liquid crystal display panel according to claim 9, characterized in that: The convex edge is in the shape of a sharp angle, a rounded angle, a flat angle or a missing angle in the orthographic projection in the length direction.

13. The liquid crystal display panel according to claim 1, characterized in that: The first substrate includes a first transparent plate body and a first transparent electrode, and the first transparent electrode is located on the inner wall of the first transparent plate body; the second substrate includes a second transparent plate body and a second transparent electrode, and the second transparent electrode is located on the inner wall of the second transparent plate body.

14. A liquid crystal cell display device, characterized in that: It comprises the liquid crystal display panel as described in any one of claims 1 to 13, and a backlight module attached to the back of the second substrate, wherein the light emission direction is changed based on the backlight module to achieve the switching of the liquid crystal display panel between the anti-peeping state viewing angle and the sharing state viewing angle.

15. A process for forming a box of a liquid crystal display device, characterized in that: The liquid crystal display device is the liquid crystal display device according to claim 14, and comprises the following steps: S1. LCD panel assembly First, two transparent glasses of the same size are selected, and then the surfaces are cleaned and an electrode coating is formed by coating or sputtering, and the electrode coating and the transparent glass form the first substrate and the second substrate respectively; secondly, a structural body with a concave-convex support area and a plurality of space support balls are used to place the structural body between the first substrate and the second substrate, and each space support ball is tangent to the groove wall of the lower groove from both sides of the lower part and tangent to the back of the first substrate from the top; finally, a rubber frame is used to seal and fill the filling area formed by the first substrate, the structural body and the space support balls with positive liquid crystal; S2. Backlight module assembly A backlight module capable of changing the direction of the light beam is mounted on the surface of the second substrate.

16. The process for forming a box of a liquid crystal display device according to claim 15, characterized in that: In step S1, the space support balls are distributed in an array on the back side of the first substrate and / or in the lower groove of the structural body by spraying or adhering.

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