Black and white liquid crystal display

Abstract

The utility model relates to the technical field of liquid crystal display, and provides a black and white liquid crystal display, which comprises a lower polaroid, a lower glass substrate, an upper glass substrate, an upper polaroid and a plurality of transparent insulating parts which are sequentially arranged along the thickness direction, an upper pattern electrode layer is arranged in a partial area of the upper glass substrate, two ends of each transparent insulating part are respectively and directly supported on the upper glass substrate and the lower glass substrate, and projections of the transparent insulating parts in the thickness direction are respectively staggered with projections of the upper pattern electrode layer and the lower pattern electrode layer in the thickness direction. In the vibration process, the transparent insulating part plays a role in supporting and pulling resistance, the upper glass substrate and the lower glass substrate are connected to counteract the motion force in the opposite direction, the possibility of disorder arrangement of liquid crystal molecules caused by vibration is reduced, the bad black spot phenomenon can be obviously improved, and the influence of vibration on the performance of the black and white liquid crystal display is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a black and white liquid crystal display. Background Art

[0002] Vertically arranged black and white LCDs have the advantages of high contrast, wide viewing angle, and purer black. They are more popular in the market and are widely used in automobile and motorcycle instrument displays, household appliance operating panels, etc.

[0003] During use, the black and white LCD display may occasionally have black spots appearing in the middle of the display graphics while riding a motorcycle. Utility Model Content

[0004] The utility model aims to provide a black and white liquid crystal display, aiming to solve the technical problem of black spots appearing in the existing black and white liquid crystal display.

[0005] The present application provides a black-and-white liquid crystal display, which includes a lower polarizer, a lower glass substrate, an upper glass substrate, an upper polarizer and a plurality of transparent insulating members arranged in sequence along a thickness direction, a partial area of ​​the lower glass substrate is provided with a lower graphic electrode layer, a partial area of ​​the upper glass substrate is provided with an upper graphic electrode layer, two ends of the plurality of transparent insulating members are directly supported on the upper glass substrate and the lower glass substrate, respectively, and projections of the transparent insulating members in the thickness direction are staggered with projections of the upper graphic electrode layer and the lower graphic electrode layer in the thickness direction.

[0006] In one of the embodiments, one end of the transparent insulating member is integrally formed on one of the upper glass substrate and the lower glass substrate, and the other end of the transparent insulating member is bonded to the other of the upper glass substrate and the lower glass substrate.

[0007] In one embodiment, the transparent insulating member is printed on the upper glass substrate or the lower glass substrate.

[0008] In one embodiment, the transparent insulating member and the lower pattern electrode layer are alternately printed and formed on the lower glass substrate; or, the transparent insulating member and the upper pattern electrode layer are alternately printed and formed on the upper glass substrate.

[0009] In one embodiment, the black and white liquid crystal display further includes a transparent conductive frame, which is located between the upper glass substrate and the lower glass substrate, and is arranged around the plurality of transparent insulating members, the upper graphic electrode layer and the lower graphic electrode layer.

[0010] In one embodiment, the plurality of transparent insulating elements are distributed in a matrix.

[0011] In one embodiment, the interval between two adjacent transparent insulating members is 0.3 mm to 0.8 mm.

[0012] In one of the embodiments, the projections of the upper pattern electrode layer and the lower pattern electrode layer in the thickness direction overlap, and the interval between the transparent insulating member and the upper pattern electrode layer is less than or equal to 0.8 mm.

[0013] In one embodiment, the height of the transparent insulating member is 5 μm to 10 μm.

[0014] In one of the embodiments, the lower polarizer is provided with a shading film, and the projection of the transparent insulating member in the thickness direction overlaps with the projection of the shading film in the thickness direction; the shading film has a via hole, and the projections of the lower graphic electrode layer and the upper graphic electrode layer in the thickness direction overlap with the projection of the via hole in the thickness direction.

[0015] The beneficial effect of the black and white liquid crystal display provided by the utility model is as follows: the inventor has found that the black and white liquid crystal display is prone to black spots in the process of many years of application, especially in a vibration environment such as when riding on a steep mountain road. In a laboratory environment, an acceleration of 2g-10g is selected and the vibration frequency is gradually increased at a frequency of 50Hz to 500Hz. The black and white liquid crystal display is powered on for testing. Especially when the acceleration reaches 10g and the frequency increases to more than 200Hz, the bad black spots gradually become serious, and the bad black spots phenomenon can be fully reproduced under laboratory conditions. Further through microscopic analysis, the GAP of the black and white liquid crystal display is deformed in a vibration environment, thereby oppressing the liquid crystal molecules, resulting in a decrease in the torsion rate of the liquid crystal molecules at the moment of display. Black spots appear at the moment of display. This is because the liquid crystal molecules themselves are arranged vertically when the liquid crystal is not powered on. When it is necessary to respond to the electric field, the GAP thickness at each position in the vibration environment is different, resulting in inconsistent response speeds, which ultimately leads to local color difference at the moment when the black and white liquid crystal display starts to display, that is, the black spots phenomenon appears at the beginning of display. After many tests, it was found that the mainstream vertically aligned liquid crystal materials currently used in black and white liquid crystal displays will have this undesirable phenomenon, which causes the vertically aligned black and white liquid crystal display to have a black spot effect when it is powered on, which is particularly obvious on large-sized black and white liquid crystal displays (more than 5 inches). To this end, a plurality of transparent insulating members are arranged between the upper glass substrate and the lower glass substrate, and the plurality of transparent insulating members are arranged at intervals to provide an overall dispersed and uniform supporting force, and the projection in the thickness direction is staggered with the projection of the upper pattern electrode layer and the lower pattern electrode layer, that is, the plurality of transparent insulating members are located in the non-display area and do not block the display graphics of the black and white liquid crystal display. During the vibration process, the upper glass substrate and the lower glass substrate will toss up and down, and the transparent insulating part plays a supporting and anti-pulling role, connecting the upper glass substrate and the lower glass substrate to offset the opposite direction movement force, reducing the GAP caused by the inward squeezing of the upper glass substrate and the lower glass substrate in the same direction during the vibration process, and reducing the GAP caused by the separation of the upper glass substrate and the lower glass substrate in the opposite directions during the vibration process. Stable box thickness can be ensured, and the mechanical stability of the black-and-white liquid crystal display can be enhanced, so that when it is subjected to external vibration, the GAP change is suppressed, and the possibility of disordered arrangement of liquid crystal molecules due to vibration is reduced. It can significantly improve the phenomenon of undesirable black spots, reduce the impact of vibration on the performance of the black-and-white liquid crystal display, and solve the technical problem of black spots appearing during the use of the existing black-and-white liquid crystal display, thereby improving the display effect of the black-and-white liquid crystal display. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 An exploded view of a black and white liquid crystal display provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the state of the black and white liquid crystal display of comparative example 1 when it is not powered on in a vibration environment;

[0019] Figure 3 It is a schematic diagram of the state of the black and white liquid crystal display of comparative example 1 when it is powered on in a vibration environment;

[0020] Figure 4 A schematic diagram of the state of the black and white liquid crystal display provided in this embodiment when it is powered on;

[0021] Figure 5 It is a schematic diagram of the state of the black and white liquid crystal display of comparative example 2 when it is powered on;

[0022] Figure 6 This is a schematic diagram of the state of the black and white liquid crystal display provided by this embodiment when it is powered on.

[0023] Among them, the reference numerals in the figure are:

[0024] Z, thickness direction;

[0025] 10. Liquid crystal molecules;

[0026] 100, lower polarizer; 200, lower glass substrate; 300, upper glass substrate; 400, upper polarizer; 500, light shielding film; 610, lower graphic electrode layer; 620, upper graphic electrode layer; 630, transparent insulating member; 640, transparent conductive frame. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] 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. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Combination Figure 1 The black-and-white liquid crystal display provided in the present application includes a lower polarizer 100, a lower glass substrate 200, an upper glass substrate 300, an upper polarizer 400 and a plurality of transparent insulating members 630 which are sequentially arranged along a thickness direction Z, a portion of the lower glass substrate 200 is provided with a lower graphic electrode layer 610, a portion of the upper glass substrate 300 is provided with an upper graphic electrode layer 620, two ends of the plurality of transparent insulating members 630 are directly supported on the upper glass substrate 300 and the lower glass substrate 200, respectively, and projections of the transparent insulating members 630 in the thickness direction Z are staggered with projections of the upper graphic electrode layer 620 and the lower graphic electrode layer 610 in the thickness direction Z.

[0033] With regard to the phenomenon of bad black spots, the inventor has found through research that black and white LCDs are prone to black spots in many years of use, especially in vibration environments such as when riding a motorcycle on a steep mountain road. The inventor selected an acceleration of 2g-10g in a laboratory environment and gradually increased the vibration frequency from 50Hz to 500Hz to test the black and white LCD. In particular, when the acceleration reached 10g and the frequency increased to more than 200Hz, the bad black spots gradually became more serious. The bad black spot phenomenon can be fully reproduced under laboratory conditions, proving that vibration is the main factor inducing the appearance of bad black spots.

[0034] GAP refers to the gap between the upper glass substrate 300 and the lower glass substrate 200. Further microscopic analysis shows that the GAP of the black and white liquid crystal display is deformed in a vibration environment, thereby compressing the liquid crystal molecules 10, resulting in a decrease in the torsion rate of the liquid crystal molecules 10 at the moment of display. Black spots appear at the beginning of display. Figure 2 and Figure 3 , vibration causes the black and white liquid crystal display to have different GAPs at different positions, as shown in the figure, D1<D2. This is because the liquid crystal molecules 10 are arranged vertically when the liquid crystal is not powered on. When it needs to respond to the electric field, the GAP thickness at each position is different under the vibration environment, resulting in inconsistent response speed and response time, which ultimately leads to local color difference at the beginning of the display of the black and white liquid crystal display, that is, black spots appear at the beginning of the display. After many tests, the mainstream vertically arranged liquid crystal materials currently used in black and white liquid crystal displays will have this undesirable phenomenon, causing the vertically arranged black and white liquid crystal display to have a black spot effect at the moment of power on, which is particularly obvious on large-sized black and white liquid crystal displays (over 5 inches).

[0035] Combination Figure 2 and Figure 3 In comparative example 1, the black-and-white liquid crystal display does not include multiple transparent insulating members 630. According to the above analysis principle, the blackening occurs because the black-and-white liquid crystal display has deformation between the upper glass substrate 300 and the lower glass substrate 200 when vibrating, resulting in different GAPs at different positions of the black-and-white liquid crystal display. During the vibration process, the GAP changes rapidly as the vibration frequency increases. The liquid crystal molecules 10 of the product need to change from 89.5° (see Figure 2 ) close to vertical angle and then to horizontal (see Figure 3 ), affected by the GAP fluctuation, the liquid crystal molecules 10 in some areas react lagging and fail to complete the action in the same time, resulting in inconsistent rates of inversion, which appear in the initial display at the moment of power-on. Figure 3Since D2>D1, the liquid crystal molecule 10 at the position D2 reacts laggingly after being energized, and is later than the liquid crystal molecule 10 at the position D1 to be tilted horizontally, resulting in color difference between the two positions, and a black spot appears at the position D2.

[0036] To this end, combined Figure 4 A plurality of transparent insulating members 630 are disposed between the upper glass substrate 300 and the lower glass substrate 200. The plurality of transparent insulating members 630 are disposed at intervals to provide an overall dispersed and uniform supporting force, and the projections thereof in the thickness direction Z are staggered from the projections of the upper pattern electrode layer 620 and the lower pattern electrode layer 610, that is, the plurality of transparent insulating members 630 are located in the non-display area and do not block the display graphics of the black and white liquid crystal display. During the vibration process, the upper glass substrate 300 and the lower glass substrate 200 are thrown up and down, and the transparent insulating member 630 plays a supporting and anti-pulling role, connecting the upper glass substrate 300 and the lower glass substrate 200 to offset the force of movement in the opposite direction, thereby reducing the GAP caused by the inward squeezing of the upper glass substrate 300 and the lower glass substrate 200 in the same direction during the vibration process, and reducing the GAP caused by the separation of the upper glass substrate 300 and the lower glass substrate 200 in the opposite directions during the vibration process. Stable box thickness can be ensured, and the mechanical stability of the black and white liquid crystal display can be enhanced, so that when it is subjected to external vibration, the GAP change is suppressed, and the possibility of disordered arrangement of liquid crystal molecules 10 caused by vibration is reduced, which can significantly improve the undesirable black spot phenomenon and reduce the impact of vibration on the performance of the black and white liquid crystal display.

[0037] The black and white LCD display provided in this embodiment improves the anti-vibration performance of the product during actual use, so that it can achieve normal display within a vibration frequency of 10g acceleration and 500Hz. It can be expanded to the display instrument panel field of high-end two-wheeled vehicles (maximum speed of more than 100KM), the display device field on some drilling tools, and the display device field of some professional equipment with relatively high vibration frequency.

[0038] In some embodiments, in combination Figure 1 The lower glass substrate 200 is used to enhance light transmittance and display effect. The lower glass substrate 200 and the upper glass substrate 300 cooperate to dynamically display content. The upper polarizer 400 and the lower polarizer 100 cooperate to ensure that the light is correctly polarized.

[0039] In some embodiments, in combination Figure 1 and Figure 4One end of the transparent insulating member 630 is integrally formed on one of the upper glass substrate 300 and the lower glass substrate 200, and the other end of the transparent insulating member 630 is bonded to the other of the upper glass substrate 300 and the lower glass substrate 200. The integral molding can ensure that the transparent insulating member 630 is firmly attached to the upper glass substrate 300 or the lower glass substrate 200, which helps to reduce the problem of the transparent insulating member 630 falling off or shifting during use. The optical interface between the transparent insulating member 630 and the upper glass substrate 300 or between the transparent insulating member 630 and the lower glass substrate 200 is smoother, which reduces the reflection and refraction loss of light on the interface and helps to prevent light leakage. The integral molding does not require additional assembly, reduces assembly errors, has good position consistency, and ensures that the transparent insulating member 630 is staggered with the upper graphic electrode layer 620 and the lower graphic electrode layer 610.

[0040] It is understood that in other embodiments, the transparent insulating member 630 may also be separately connected to the upper glass substrate 300 and the lower glass substrate 200, which is not limited here. For example, the transparent insulating member 630 is separately connected to the upper glass substrate 300 and the lower glass substrate 200. The transparent insulating member 630, the upper glass substrate 300 and the lower glass substrate 200 are manufactured separately, which reduces the manufacturing difficulty and avoids the integral molding of the transparent insulating member 630 and the upper glass substrate 300, or the transparent insulating member 630 and the lower glass substrate 200. One of the processing errors causes the entire piece to be scrapped. Optionally, the transparent insulating member 630 is separately connected to the upper glass substrate 300 and the lower glass substrate 200 by bonding, welding or clamping, which is not limited here.

[0041] In one embodiment, in combination Figure 4 , the transparent insulating member 630 is printed and formed on the upper glass substrate 300 or the lower glass substrate 200. Compared with the setting methods such as spraying, electroplating, physical deposition or 3D printing, the transparent insulating member 630 is directly printed on the surface of the upper glass substrate 300 or the lower glass substrate 200, and the material cost is greatly reduced. In addition, the printing setting process is mature and has high precision, which can ensure the uniformity and high consistency of the distribution of the transparent insulating member 630 on the upper glass substrate 300 or the lower glass substrate 200. The printing setting process is simple and fast, which improves production efficiency and reduces processing difficulty. The transparent insulating member 630 adopts a printing process to achieve close fit on the surface of the upper glass substrate 300 or the lower glass substrate 200, which can better play its supporting role and anti-deformation ability and improve the display effect. It can be understood that in other embodiments, the transparent insulating member 630 adopts a setting method such as spraying, electroplating, physical deposition or 3D printing to achieve one-piece molding with the upper glass substrate 300 or the lower glass substrate 200, which is not limited here.

[0042] Specifically, combined Figure 4The transparent insulating member 630 and the lower pattern electrode layer 610 are alternately printed and formed on the lower glass substrate 200. Alternatively, the transparent insulating member 630 and the upper pattern electrode layer 620 are alternately printed and formed on the upper glass substrate 300.

[0043] In one embodiment, in combination Figure 1 The black and white liquid crystal display further includes a transparent conductive frame 640 , which is located between the upper glass substrate 300 and the lower glass substrate 200 , and is disposed around a plurality of transparent insulating members 630 , an upper graphic electrode layer 620 and a lower graphic electrode layer 610 .

[0044] Among them, the transparent conductive frame 640, on the one hand, enhances the connection stability between the upper glass substrate 300 and the lower glass substrate 200, which helps to reduce connection failure caused by vibration or impact; on the other hand, it helps to reduce electromagnetic interference and signal leakage inside the upper graphic electrode layer 620 and the lower graphic electrode layer 610, thereby improving the display effect and making the picture clearer and more realistic.

[0045] In this embodiment, the transparent conductive frame 640 can be integrally formed and disposed on the upper glass substrate 300 or the lower glass substrate 200, or can be separately connected to the upper glass substrate 300 and the lower glass substrate 200, which is not limited here.

[0046] Specifically, the transparent conductive frame 640 is separately connected to the upper glass substrate 300 and the lower glass substrate 200. The transparent conductive frame 640, the upper glass substrate 300 and the lower glass substrate 200 are manufactured separately, which reduces the manufacturing difficulty and avoids the entire process of integrally forming the transparent conductive frame 640 and the upper glass substrate 300, or the transparent conductive frame 640 and the lower glass substrate 200. The processing error caused by one of the processing errors leads to the overall scrapping. Optionally, the transparent conductive frame 640 is separately connected to the upper glass substrate 300 and the lower glass substrate 200 by bonding, welding or clamping, which is not limited here.

[0047] Specifically, combined Figure 1 The transparent conductive frame 640 is integrally formed with the upper glass substrate 300 or the lower glass substrate 200, without the need for additional assembly, thus reducing assembly errors and ensuring good position consistency, thereby ensuring that the transparent conductive frame 640 surrounds multiple transparent insulating members 630, the upper graphic electrode layer 620 and the lower graphic electrode layer 610.

[0048] Optionally, combined Figure 1, the transparent conductive frame 640 is printed and set on the surface of the upper glass substrate 300 or the lower glass substrate 200. Compared with the setting methods such as spraying, electroplating, physical deposition or 3D printing, the transparent conductive frame 640 is directly printed on the surface of the upper glass substrate 300 or the lower glass substrate 200, and the material cost is greatly reduced. In addition, the printing setting process is mature and has high precision, which can ensure the uniformity and high consistency of the distribution of the transparent conductive frame 640 on the upper glass substrate 300 or the lower glass substrate 200. The printing setting process is simple and fast, which improves production efficiency and reduces processing difficulty. The transparent conductive frame 640 adopts a printing process to achieve close fit on the surface of the upper glass substrate 300 or the lower glass substrate 200, which can better play its supporting role. It can be understood that in other embodiments, the transparent conductive frame 640 adopts a setting method such as spraying, electroplating, physical deposition or 3D printing to achieve one-piece molding with the upper glass substrate 300 or the lower glass substrate 200, which is not limited here.

[0049] In some embodiments, in combination Figure 1 The transparent conductive frame 640 is a conductive epoxy resin frame. The conductive epoxy resin frame has extremely high transparency, good conductivity, and good mechanical stability, so that it can effectively isolate the electrical signals between the upper glass substrate 300 and the lower glass substrate 200, prevent the interference of external electrical signals and the leakage of internal electrical signals; and can effectively support the upper glass substrate 300 and the lower glass substrate 200 to prevent deformation under vibration or impact.

[0050] Specifically, the conductive epoxy resin frame is directly integrally formed on the upper glass substrate 300 or the lower glass substrate 200 through a printing process, without the need for additional assembly steps, thus simplifying the production process and reducing production costs. The integrally formed arrangement also ensures the positional consistency between the conductive epoxy resin frame and the transparent insulating member 630, the upper pattern electrode layer 620, and the lower pattern electrode layer 610, thus avoiding assembly errors.

[0051] Specifically, the conductive epoxy resin frame has good adhesion, and the conductive epoxy resin frame can be automatically bonded and fixed to the upper glass substrate 300 or the lower glass substrate 200 without the need for additional connection structures or bonding operations, thereby simplifying the assembly process and improving assembly efficiency. Further, the conductive epoxy resin frame can be integrally formed and printed with graphics on the upper glass substrate 300 or the lower glass substrate 200. For example, the conductive epoxy resin frame is integrally formed and printed with graphics on the lower glass substrate 200, and then the conductive epoxy resin frame is pre-cured, and then the upper glass substrate 300 and the lower glass substrate 200 are bonded together, so that the conductive epoxy resin frame is synchronously bonded and fixed to the upper glass substrate 300.

[0052] Optionally, the transparent insulating member 630 is printed on the upper glass substrate 300 or the lower glass substrate 200 by UV printing. For example, the transparent insulating member 630 is made by image processing software such as AI and PS, and then the transparent insulating member 630 pattern is printed on the upper glass substrate 300 or the lower glass substrate 200 by UV printing equipment.

[0053] In some embodiments, in combination Figure 1 , the transparent insulating member 630 is a transparent epoxy resin column. The transparent epoxy resin column has extremely high transparency, good insulation, and good mechanical stability, so that it can effectively isolate the electrical signals between the upper glass substrate 300 and the lower glass substrate 200, preventing interference and leakage between the electrical signals; it can effectively support the upper glass substrate 300 and the lower glass substrate 200 to prevent deformation under vibration or impact.

[0054] Specifically, the transparent epoxy resin column is directly integrally formed on the upper glass substrate 300 or the lower glass substrate 200 through a printing process, without the need for additional assembly steps, thus simplifying the production process and reducing production costs. The integrally formed arrangement also ensures the positional consistency between the transparent insulating member 630 and the upper pattern electrode layer 620 and the lower pattern electrode layer 610, thus avoiding assembly errors.

[0055] Specifically, the transparent epoxy resin column has good adhesion, and the transparent epoxy resin column can be automatically bonded and fixed to the upper glass substrate 300 or the lower glass substrate 200 without the need for additional connection structures or bonding operations, thereby simplifying the assembly process and improving assembly efficiency. Furthermore, the transparent epoxy resin column can be integrally formed and printed on the upper glass substrate 300 or the lower glass substrate 200. For example, a plurality of transparent insulating members 630 are integrally formed and printed on the lower glass substrate 200, and then the plurality of transparent insulating members 630 are pre-cured, and then the upper glass substrate 300 and the lower glass substrate 200 are bonded together, so that the plurality of transparent insulating members 630 are synchronously bonded and fixed on the upper glass substrate 300.

[0056] In some embodiments, in combination Figure 1 and Figure 4 The plurality of transparent insulating members 630 are distributed in a matrix, ensuring that the transparent insulating members 630 provide a uniformly dispersed supporting force between the upper glass substrate 300 and the lower glass substrate 200, while ensuring that the height between the upper glass substrate 300 and the lower glass substrate 200 is roughly uniform everywhere, and the mechanical stability of the black and white liquid crystal display is significantly improved, reducing the possibility of disordered arrangement of the liquid crystal molecules 10 due to vibration.

[0057] In one of the embodiments, the interval between two adjacent transparent insulating members 630 is 0.3 mm to 0.8 mm. The interval of 0.3 mm to 0.8 mm can ensure that the transparent insulating member 630 has good supporting force when subjected to vibration, prevents the black and white liquid crystal display from deforming, and has less light leakage. If the interval between two adjacent transparent insulating members 630 is greater than 0.8 mm, the supporting density is small and the anti-deformation ability is small. If the interval between two adjacent transparent insulating members 630 is less than 0.3 mm, the transparent insulating members 630 are too dense, which increases the manufacturing cost on the one hand, and causes the boundary between the display area and the non-display area to be in rigid line contact and have height differences everywhere, increasing the risk of light leakage.

[0058] Optionally, the interval between two adjacent transparent insulating members 630 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or 0.8 mm. In this case, in the outer contour of a graphic composed of multiple transparent insulating members 630, multiple transparent insulating members 630 are evenly distributed in the outer contour of the graphic to avoid the interval between two adjacent transparent insulating members 630 being too large or too small.

[0059] In one embodiment, the projections of the upper pattern electrode layer 620 and the lower pattern electrode layer 610 in the thickness direction Z overlap, and the interval between the transparent insulating member 630 and the upper pattern electrode layer 620 is less than or equal to 0.8 mm. Based on this, the plurality of transparent insulating members 630 can stably support the display area of ​​the black-and-white liquid crystal display, prevent the display area from being deformed due to vibration or other external forces, and black spots can only appear in the display area, so that the black-and-white liquid crystal display does not have color difference, thereby ensuring the consistency of the display effect.

[0060] In one embodiment, the height of the transparent insulating member 630 is 5 μm to 10 μm. When the height of the transparent insulating member 630 is less than 5 μm, the processing difficulty is large and the supporting effect is not strong. When the height of the transparent insulating member 630 is increased to 5 μm to 10 μm, the processing difficulty is small, it has a good supporting effect, and avoids a large height difference with the upper graphic electrode layer 620 and the lower graphic electrode layer 610. When the height of the transparent insulating member 630 is greater than 10 μm, the height difference with the upper graphic electrode layer 620 and the lower graphic electrode layer 610 increases, increasing the risk of light leakage.

[0061] In one embodiment, the lower polarizer 100 is provided with a light shielding film 500, and the projection of the transparent insulating member 630 in the thickness direction Z overlaps with the projection of the light shielding film 500 in the thickness direction Z. Figure 1 , the projection of the transparent insulating member 630 in the thickness direction Z overlaps with the projection of the light shielding film 500 in the thickness direction Z, thereby preventing the transparent insulating member 630 from being projected and casting a shadow.

[0062] Specifically, a backlight source is arranged on the side of the light-shielding film 500 away from the upper glass substrate 300, the light-shielding film 500 has a via hole, the projections of the lower pattern electrode layer 610 and the upper pattern electrode layer 620 in the thickness direction Z overlap, and the projections of the lower pattern electrode layer 610 and the upper pattern electrode layer 620 in the thickness direction Z overlap with the projections of the via holes of the light-shielding film 500 in the thickness direction Z, thereby ensuring that the light from the backlight source passes through the light-shielding film 500 smoothly.

[0063] Specifically, the light shielding film 500 has a via hole, and the projections of the lower pattern electrode layer 610 and the upper pattern electrode layer 620 in the thickness direction Z overlap with the projections of the via hole in the thickness direction Z.

[0064] Combination Figure 5 In the black and white liquid crystal display of the comparative example 2, a plurality of transparent insulating members 630 are added, but the light shielding film 500 is not provided. At this time, the liquid crystal molecules 10 will leak light around the plurality of transparent insulating members 630 due to the height difference problem, see Figure 5 There are multiple small dots (light leakage points) in the image.

[0065] Combination Figure 1 and Figure 6 In the black and white liquid crystal display provided in this embodiment, the shading film 500 provided on the lower polarizer 100 can effectively block the light leakage areas caused by the transparent insulating member 630, preventing light from being transmitted from these areas, thereby improving the display effect of the black and white liquid crystal display.

[0066] In the aforementioned embodiment, the shading film 500 can be disposed on a surface of the lower polarizer 100 close to the lower glass substrate 200 , or the shading film 500 can be disposed on a surface of the lower polarizer 100 away from the lower glass substrate 200 , which is not specifically limited here.

[0067] In one embodiment, in combination Figure 1 The light shielding film 500 is disposed on the side surface of the lower polarizer 100 away from the lower glass substrate 200, and the light shielding film 500 can directly and closely block the light leakage area. Since light undergoes reflection, refraction and other processes during propagation, disposing the light shielding film 500 at a position close to the lower glass substrate 200 can reduce the interval between the transparent insulating member 630 and the light shielding film 500, reduce the distance for light leakage and escape, and thus reduce the light leakage phenomenon.

[0068] In one embodiment, in combination Figure 1The light shielding film 500 is disposed on the entire side surface of the lower polarizer 100, realizing the design of maximizing the area of ​​the light shielding film 500, and can fully block all light emitted from the light leakage area, avoiding the omission of individual light leakage points, and significantly improving the uniformity and consistency of the display image. At the same time, the light shielding film 500 with a full-surface design can simplify the design process, reduce the need for customization, easily realize automation and standardization, improve production efficiency and reduce costs.

[0069] In one embodiment, in combination Figure 1 The projection of the shading film 500 in the thickness direction Z covers the projection of multiple transparent insulating parts 630 in the thickness direction Z. There is a height difference at each transparent insulating part 630, which causes light leakage. It will be shielded by the shading film 500 and the light leakage point cannot be displayed, avoiding light leakage anomalies.

[0070] In one embodiment, in combination Figure 1 , the light shielding film 500 is a black ink film or a black paint film. The cost of the black ink film or the black paint film is lower, and its thickness and volume are greatly reduced, thereby reducing the overall cost of the black and white liquid crystal display, so that the black and white liquid crystal display can be designed to be lighter and thinner. The black ink film or the black paint film can be directly coated on the surface of the lower polarizer 100 without the need for additional connection structures or bonding operations, which simplifies the assembly process and improves assembly efficiency.

[0071] In some embodiments, in combination Figure 1 The light shielding film 500 is integrally formed with the lower polarizer 100, which reduces assembly errors and assembly operations and improves position consistency. Specifically, the light shielding film 500 is printed and arranged on the lower polarizer 100. The thickness of the light shielding film 500 is 2 μm to 8 μm.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A black and white liquid crystal display, characterized in that: The black-and-white liquid crystal display comprises a lower polarizer, a lower glass substrate, an upper glass substrate, an upper polarizer and a plurality of transparent insulating members which are sequentially arranged along a thickness direction, a partial area of ​​the lower glass substrate is provided with a lower graphic electrode layer, a partial area of ​​the upper glass substrate is provided with an upper graphic electrode layer, two ends of the plurality of transparent insulating members are directly supported on the upper glass substrate and the lower glass substrate respectively, and projections of the transparent insulating members in the thickness direction are staggered with projections of the upper graphic electrode layer and the lower graphic electrode layer in the thickness direction respectively.

2. The black-and-white liquid crystal display according to claim 1, characterized in that: One end of the transparent insulating member is integrally formed on one of the upper glass substrate and the lower glass substrate, and the other end of the transparent insulating member is bonded to the other of the upper glass substrate and the lower glass substrate.

3. The black-and-white liquid crystal display according to claim 2, characterized in that: The transparent insulating member is printed and formed on the upper glass substrate or the lower glass substrate.

4. The black-and-white liquid crystal display according to claim 3, characterized in that: The transparent insulating member and the lower pattern electrode layer are alternately printed and formed on the lower glass substrate; Alternatively, the transparent insulating member and the upper pattern electrode layer are alternately printed and formed on the upper glass substrate.

5. The black-and-white liquid crystal display according to claim 1, characterized in that: The black-and-white liquid crystal display further comprises a transparent conductive frame, which is located between the upper glass substrate and the lower glass substrate, and is disposed around the plurality of transparent insulating members, the upper graphic electrode layer and the lower graphic electrode layer.

6. The black-and-white liquid crystal display according to claim 1, characterized in that: The plurality of transparent insulating members are distributed in a matrix.

7. The black-and-white liquid crystal display according to claim 6, characterized in that: The interval between two adjacent transparent insulating members is 0.3 mm to 0.8 mm.

8. The black-and-white liquid crystal display according to claim 1, characterized in that: The projections of the upper pattern electrode layer and the lower pattern electrode layer in the thickness direction overlap, and the interval between the transparent insulating member and the upper pattern electrode layer is less than or equal to 0.8 mm.

9. The black-and-white liquid crystal display according to claim 1, characterized in that: The height of the transparent insulating member is 5 μm to 10 μm.

10. The black-and-white liquid crystal display according to any one of claims 1 to 9, characterized in that: The lower polarizer is provided with a light shielding film, and the projection of the transparent insulating member in the thickness direction overlaps with the projection of the light shielding film in the thickness direction; The light shielding film has a via hole, and the projections of the lower pattern electrode layer and the upper pattern electrode layer in the thickness direction overlap with the projections of the via hole in the thickness direction.

Images