Cholesterol liquid crystal splicing screen, manufacturing method thereof and display device

Abstract

The invention discloses a cholesterol liquid crystal splicing screen and a display device, a plurality of array substrates are distributed on a lower substrate in an array mode, each array substrate is provided with a rubber frame extending along the edge, liquid crystals are contained in the rubber frames, an upper cover plate covers the array substrates, and a plurality of liquid crystal boxes are formed between the upper cover plate and the lower substrate. According to the cholesterol liquid crystal splicing screen with the optimized design, the array substrate and the cover plate are matched to form a plurality of display areas and form a complete liquid crystal display, the purpose of large-size display is achieved, meanwhile, block display can be achieved, the width of splicing seams is greatly reduced, and the visual effect of terminal use is greatly improved. The invention further discloses a manufacturing method of the cholesterol liquid crystal splicing screen, the manufacturing process is reasonable, simple and fast, and the reliability of the manufactured product is high.

Description

Technical Field

[0001] The present invention relates to the technical field of cholesteric liquid crystal splicing screens, and in particular to a cholesteric liquid crystal splicing screen, a manufacturing method thereof and a display device. Background Art

[0002] The spliced ​​LCD screens currently on the market simply splice together several individual liquid crystal boxes to achieve the purpose of large-size display. Usually, several individual liquid crystal boxes are directly spliced ​​together. Since each liquid crystal box is a complete independent display unit, including upper and lower substrates and liquid crystal sandwiched between the substrates, the width of the splicing seam is greater than 5mm. This kind of spliced ​​LCD screen has a wide splicing seam, and the splicing seam is not light-transmissive, resulting in a wide linear non-display area at the splicing position, so that there are always several fixed dark lines in the picture, and the visual effect is not good during use. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a cholesteric liquid crystal splicing screen, a manufacturing method thereof and a display device.

[0004] A cholesteric liquid crystal splicing screen proposed in the present invention comprises: a lower substrate, an upper cover plate and a plurality of array substrates;

[0005] A plurality of array substrates are distributed in an array on a lower substrate, and a splicing gap is formed between two adjacent array substrates. Each array substrate is provided with a plastic frame extending along the edge, and cholesterol liquid crystal is contained in the plastic frame. An upper cover plate covers the plurality of array substrates, and a plurality of liquid crystal boxes are formed between the upper cover plate and the lower substrate.

[0006] Preferably, a first electrode layer is provided on the array substrate, a second electrode layer is provided on the upper cover plate, and electrode regions corresponding to the plurality of first electrode layers are formed on the second electrode layer.

[0007] Preferably, a gate driving unit is provided on the array substrate, and an input line of the gate line passes through at least one liquid crystal box.

[0008] Preferably, the splicing gap is less than 2 mm.

[0009] Preferably, the glue frame is formed at the edge of the array substrate and at the joint gap between two adjacent array substrates.

[0010] Preferably, the width of the rubber frame is less than 2 mm.

[0011] In the present invention, the proposed cholesteric liquid crystal splicing screen has multiple array substrates distributed in an array on the lower substrate, each array substrate is provided with a plastic frame extending along the edge, and liquid crystal is contained in the plastic frame, and the upper cover plate covers the multiple array substrates, and multiple liquid crystal boxes are formed between the upper cover plate and the lower substrate. Through the above-mentioned optimized cholesteric liquid crystal splicing screen, multiple display areas are formed by the cooperation of the array substrate and the cover plate, forming a complete liquid crystal display, achieving the purpose of large-size display, and at the same time, it can also be displayed in blocks, and the width of the splicing seam is greatly reduced, which greatly improves the visual effect of terminal use.

[0012] The present invention also provides a method for manufacturing the above-mentioned cholesteric liquid crystal splicing screen, comprising the following steps:

[0013] S1, fixing a plurality of array substrates on a lower substrate so that the plurality of array substrates are arranged in an array;

[0014] S2, applying frame glue on the array substrate to form a glue frame;

[0015] S3, dripping cholesterol liquid crystal into the area formed inside the glue frame;

[0016] S4, covering the multiple array substrates with an upper cover plate to form multiple liquid crystal display areas.

[0017] Preferably, the method further comprises the following step: pre-arranging a gate driving unit on the array substrate.

[0018] Preferably, in S2, frame glue is applied on the edge of the array substrate and the joint gap between two adjacent array substrates.

[0019] In the present invention, the proposed manufacturing method is based on the structure of the cholesterol liquid crystal splicing screen, the manufacturing process is reasonable, the manufacturing splicing process is integrated, simple and fast, and the manufactured product has high reliability.

[0020] The present invention also provides a display device, comprising the above-mentioned cholesteric liquid crystal spliced ​​screen.

[0021] In the present invention, the technical effect of the display device proposed is similar to that of the above-mentioned spliced ​​screen, so it will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic structural diagram of an implementation of a cholesteric liquid crystal splicing screen proposed by the present invention.

[0023] Figure 2 This is a schematic diagram of the arrangement of array substrates on a lower substrate in one embodiment of a cholesteric liquid crystal splicing screen proposed by the present invention.

[0024] Figure 3This is a schematic diagram of the arrangement of array substrates on a lower substrate in another embodiment of a cholesteric liquid crystal splicing screen proposed by the present invention.

[0025] Figure 4 This is a schematic diagram of arrangement of array substrates on a lower substrate in yet another embodiment of a cholesteric liquid crystal splicing screen proposed by the present invention.

[0026] Figure 5 This is a schematic diagram of step S1 in one implementation of a method for manufacturing a cholesteric liquid crystal spliced ​​screen proposed by the present invention.

[0027] Figure 6 This is a schematic diagram of step S2 in one implementation of a method for manufacturing a cholesteric liquid crystal spliced ​​screen proposed by the present invention.

[0028] Figure 7 This is a schematic diagram of gluing in step S2 in one embodiment of a method for manufacturing a cholesteric liquid crystal spliced ​​screen proposed by the present invention.

[0029] Figure 8 This is a schematic diagram of step S3 in one implementation of a method for manufacturing a cholesteric liquid crystal spliced ​​screen proposed by the present invention.

[0030] Reference numerals:

[0031] 1. Lower substrate; 2. Upper cover plate; 3. Array substrate; 4. Glue frame; 5. Cholesteric liquid crystal; 6. First electrode layer; 7. Second electrode layer. DETAILED DESCRIPTION

[0032] The implementation scheme of the present application is aimed at solving the technical problem that, when the liquid crystal screens are spliced ​​in the prior art, the substrate splicing seams of adjacent splicing units of the liquid crystal screens are large, resulting in large gaps between adjacent liquid crystal boxes, and the splicing seams are not light-transmissive, resulting in several fixed dark lines always appearing in the picture, affecting the visual effect. The implementation scheme of the present application is used to solve this technical problem.

[0033] Reference Figure 1 The present invention provides a cholesteric liquid crystal splicing screen, comprising: a lower substrate 1, an upper cover plate 2 and a plurality of array substrates 3;

[0034] Multiple array substrates 3 are distributed in an array on the lower substrate 1, and a splicing gap is formed between two adjacent array substrates. Each array substrate 3 is provided with a plastic frame 4 extending along the edge, and cholesterol liquid crystal 5 is contained in the plastic frame 4. The upper cover plate 2 covers the multiple array substrates 3, and multiple liquid crystal boxes are formed between the upper cover plate 2 and the lower substrate 1. Multiple array substrates are clamped between the upper cover plate and the lower substrate to ensure the overall flatness of the spliced ​​screen and improve the visual effect.

[0035] Cholesteric liquid crystal has a bistable function, which can form two stable states and one unstable state according to the different applied voltages. During the LCD display process, the liquid crystal layer selects the liquid crystal with a pitch to reflect the specified color wavelength. When the liquid crystal layer is transparent, external light passes through the display panel and is absorbed by the light-absorbing layer below. When the liquid crystal layer reflects light of a specified color wavelength, the specified color is displayed, and the remaining light passes through the liquid crystal layer and is absorbed by the light-absorbing layer below. Therefore, different color displays can be achieved by selecting the color reflected by the liquid crystal layer.

[0036] In this embodiment, the proposed cholesteric liquid crystal splicing screen has multiple array substrates distributed in an array on the lower substrate, each array substrate is provided with a plastic frame extending along the edge, and liquid crystal is contained in the plastic frame, and the upper cover plate covers the multiple array substrates, and multiple liquid crystal boxes are formed between the upper cover plate and the lower substrate. Through the above-mentioned optimized cholesteric liquid crystal splicing screen, multiple display areas are formed by the cooperation of the array substrate and the cover plate, forming a complete liquid crystal display, achieving the purpose of large-size display, and can also be displayed in blocks, and the width of the splicing seam is greatly reduced, which greatly improves the visual effect of terminal use.

[0037] It is understandable that, in order to ensure the display, based on the display principle of cholesterol liquid crystal, the display surface of the cholesterol liquid crystal splicing screen can be one side of the upper cover plate or one side of the lower substrate. It can be understood by those skilled in the art that the upper cover plate, the array substrate and the lower substrate are all transparent plates. The material can be a rigid substrate, such as a glass plate or a PMMA substrate, or it can be a flexible substrate, such as a substrate made of PI or PET as the main component. This application does not make specific limitations.

[0038] In order to ensure that each liquid crystal display area realizes its working function, in a specific embodiment, a first electrode layer 6 is provided on the array substrate 3, a second electrode layer 7 is provided on the upper cover plate 2, and electrode areas corresponding to the plurality of first electrode layers 6 are formed on the second electrode layer 7. Preferably, the second electrode layer can be a common electrode formed on the upper cover plate using ITO. The first electrode layer can be a pixel electrode provided on the array substrate. In actual design, the second electrode layer is a patterned film layer, which can be formed by thin film deposition and photolithography, and its material can be a transparent conductive material, i.e., a transparent conductive oxide (TCO) or a conductive polymer, such as ITO, IZO, PEDOT, etc.

[0039] In the specific design of the array substrate, a gate drive unit is provided on the array substrate 3 to realize the block display of the display unit on each array substrate. In order to reduce the joint seam, the area of ​​the gate drive unit can be reduced as much as possible, and preferably the input line of the gate line can pass through the display area.

[0040] Reference Figure 5-8This embodiment also provides a method for manufacturing the above-mentioned cholesteric liquid crystal splicing screen, comprising the following steps:

[0041] S1, fixing a plurality of array substrates 3 on the lower substrate 1 so that the plurality of array substrates 3 are distributed in an array;

[0042] Specifically, a gate driving unit is pre-arranged on the array substrate 3 .

[0043] It is understandable that in actual design, multiple array substrates of the same size can be arranged on the lower substrate in an N×M rectangular array, such as 2*2, 1*3, etc. It is also possible to use substrates of different sizes to be staggered according to actual needs, such as Figure 2-4 The above arrangement is exemplary, and the present application does not limit the distribution of the array substrates. The splicing gap between two adjacent array substrates can be controlled to be less than 2 mm.

[0044] S2, applying frame glue on the array substrate 3 to form a glue frame 4;

[0045] During the sealant coating process, the sealant is coated at the edge of the array substrate and the joint gap between two adjacent array substrates, so that the sealant is filled at the joint gap to connect the adjacent array substrates, and the sealant frame 4 is formed at the edge of the array substrate 3 and the joint gap between two adjacent array substrates 3. During processing, the sealant width can be precisely controlled so that the sealant frame 4 width is less than 2 mm, so that the spacing between two adjacent display areas is reduced to a very small size, and the screen display effect has no obvious black lines.

[0046] S3, dripping cholesterol liquid crystal 5 into the area formed inside the glue frame 4;

[0047] S4, covering the upper cover plate 2 on the plurality of array substrates 3 to form a plurality of liquid crystal cells. Thus, a cholesteric liquid crystal cell composed of three layers of substrates is formed.

[0048] This embodiment also provides a display device, including the above-mentioned cholesteric liquid crystal splicing screen. It is understandable that the display device may also include a power supply, a controller, etc. This embodiment provides a display device, which minimizes the splicing gap to the greatest extent through the design of the cholesteric liquid crystal splicing screen, ensures the flatness of the display surface, and thus does not affect the overall visual effect of the splicing screen, increases the overall flatness of the splicing screen, and improves the visual effect.

[0049] In actual design, the display device of this embodiment may include only a single-layer liquid crystal splicing screen, and a light absorbing layer, such as an ink layer, is provided at the bottom of the lower substrate. When the liquid crystal layer is in a transparent state, external light passes through the display panel and is absorbed by the light absorbing layer below. When the liquid crystal layer reflects light of a specified color wavelength, the specified color is displayed, and the remaining light passes through the liquid crystal layer and is absorbed by the light absorbing layer below. The dual-color display function is achieved by adjusting the color of the liquid crystal and the light absorbing layer below. In addition, multiple liquid crystal splicing layers may be superimposed to achieve multi-color display. In this case, a light absorbing layer may be provided at the bottom of the lowest liquid crystal splicing screen.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cholesteric liquid crystal splicing screen, characterized in that: include: A lower substrate (1), an upper cover plate (2) and a plurality of array substrates (3); A plurality of array substrates (3) are distributed in an array on a lower substrate (1), and a splicing gap is formed between two adjacent array substrates. A plastic frame (4) extending along the edge is provided on each array substrate (3), and cholesterol liquid crystal (5) is accommodated in the plastic frame (4). An upper cover plate (2) covers the plurality of array substrates (3), and a plurality of liquid crystal boxes are formed between the upper cover plate (2) and the lower substrate (1).

2. The cholesteric liquid crystal splicing screen according to claim 1, characterized in that: A first electrode layer (6) is provided on the array substrate (3), a second electrode layer (7) is provided on the upper cover plate (2), and electrode regions corresponding to the plurality of first electrode layers (6) are formed on the second electrode layer (7).

3. The cholesteric liquid crystal splicing screen according to claim 1, characterized in that: A gate driving unit is provided on the array substrate (3), and an input line of the gate line passes through at least one liquid crystal box.

4. The cholesteric liquid crystal splicing screen according to claim 1, characterized in that: The splicing gap is less than 2 mm.

5. The cholesteric liquid crystal splicing screen according to claim 1, characterized in that: The glue frame (4) is formed at the edge of the array substrate (3) and at the joint gap between two adjacent array substrates (3).

6. The cholesteric liquid crystal splicing screen according to claim 5, characterized in that: The width of the rubber frame (4) is less than 2 mm.

7. A method for manufacturing a cholesteric liquid crystal splicing screen according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, fixing a plurality of array substrates (3) on a lower substrate (1) so that the plurality of array substrates (3) are distributed in an array; S2, applying a frame glue on the array substrate (3) to form a glue frame (4); S3, dripping cholesterol liquid crystal (5) into the area formed inside the glue frame (4); S4, covering the upper cover plate (2) on the plurality of array substrates (3) to form a plurality of liquid crystal boxes.

8. The method according to claim 7, characterized in that: The method also includes the following steps: pre-arranging a gate driving unit on the array substrate (3).

9. The manufacturing method according to claim 7, characterized in that: In S2, frame glue is applied on the edge of the array substrate and the joint gap between two adjacent array substrates.

10. A display device, characterized in that: It comprises the cholesteric liquid crystal splicing screen according to any one of claims 1-6.

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