Liquid crystal display screen capable of eliminating ITO (Indium Tin Oxide) bottom shadow

Abstract

The liquid crystal display screen capable of eliminating the ITO bottom shadow comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially arranged in an overlapped mode from bottom to top, the lower substrate is longer than the upper substrate and extends outwards to form a step, a driving IC and an FPC are bound on the upper surface of the lower substrate located at the position of the step, and the lower surface of the lower substrate located at the position of the step is provided with a liquid crystal layer. An ITO (Indium Tin Oxide) pattern layer is arranged on the upper surface of the lower substrate, the ITO pattern layer is electrically connected with the FPC, and the thickness of the ITO pattern layer is 100-300. Due to the fact that the reflectivity of the ITO pattern layer is different from the reflectivity of the lower substrate, a large number of tests show that the thickness of the ITO pattern layer can influence the obvious degree of the bottom shadow, when the thickness of the ITO pattern layer is designed to range from 100 to 300, the reflectivity of the ITO pattern layer is close to the reflectivity of the lower substrate, and the bottom shadow of the bottom shadow is not influenced by the thickness of the ITO pattern layer. That is, although there is a difference between the reflectivity of the ITO pattern layer and the reflectivity of the lower substrate, the difference cannot be recognized by human eyes, so that the human eyes cannot check the ITO bottom shadow.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a liquid crystal display screen capable of eliminating ITO background shadow. Background Art

[0002] At present, more and more intelligent products are being developed. With the development of science and technology, intelligent products can be seen everywhere in people's lives. Smart wearable products have been very popular in recent years. Smart watches and bracelets are of various styles. They are not only used as sports watches, but also have certain accessories. At present, the touch screen of wearable products can generally see the ITO pattern layer when exposed to strong light or carefully observed, which is the so-called ITO background. This phenomenon greatly affects visual appreciation and reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to eliminate the ITO background, improve the visual effect and enhance the competitiveness of the product.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a liquid crystal display screen that eliminates ITO background shadows, which includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate stacked in sequence from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, a driving IC and an FPC are bound to the upper surface of the lower substrate at the step, an ITO pattern layer is arranged on the upper surface of the lower substrate, the ITO pattern layer is electrically connected to the FPC, and the thickness of the ITO pattern layer is 100Å-300Å.

[0006] As a preferred embodiment of the ITO background-eliminating liquid crystal display provided by the utility model, the FPC includes a main body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the main body, both ends of the reinforcement plate have fixed parts extending outward, the two fixed parts both exceed the edge of the main body, the lower surfaces of the two fixed parts are fixed with first strong magnetic blocks, the connector is arranged below the main body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

[0007] As a preferred implementation of the ITO background-eliminating liquid crystal display screen provided by the utility model, two grooves are provided on the connector, and the two second strong magnetic blocks are respectively fixed in the two grooves.

[0008] As a preferred implementation of the ITO shadow-eliminating liquid crystal display screen provided by the utility model, the edge of the groove is provided with a chamfer.

[0009] As a preferred implementation manner of the ITO background-eliminating liquid crystal display screen provided by the utility model, the chamfer is a right angle.

[0010] As a preferred implementation of the ITO background-eliminating liquid crystal display screen provided by the utility model, the chamfer is a rounded corner.

[0011] As a preferred implementation of the ITO background-eliminating LCD display provided by the utility model, the outer dimensions of the second strong magnetic block are larger than the outer dimensions of the first strong magnetic block, and the outer dimensions of the groove correspond to the outer dimensions of the first strong magnetic block and the second strong magnetic block.

[0012] As a preferred implementation of the ITO background-eliminating liquid crystal display screen provided by the utility model, the depth of the groove is equal to the sum of the thickness of the first strong magnetic block and the second strong magnetic block.

[0013] As a preferred implementation of the ITO background-eliminating liquid crystal display screen provided by the utility model, the materials of the first strong magnetic block and the second strong magnetic block are both strong neodymium iron boron magnets.

[0014] As a preferred implementation of the ITO background-eliminating liquid crystal display screen provided by the utility model, the first strong magnetic block and the second strong magnetic block have different colors.

[0015] The utility model has the following beneficial effects:

[0016] The existence of ITO background shadow is due to the difference in reflectivity between the ITO pattern layer and the lower substrate. After a large number of tests, it was found that the thickness of the ITO pattern layer will affect the obviousness of the background shadow. When the thickness of the ITO pattern layer is designed to be between 100Å-300Å, the reflectivity of the ITO pattern layer is close to the reflectivity of the lower substrate. That is, although there is still a difference between the reflectivity of the ITO pattern layer and the reflectivity of the lower substrate, the human eye cannot recognize this difference, and thus the human eye cannot see the ITO background shadow. That is, it can eliminate the ITO background shadow, enhance the visual effect, and improve the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The utility model provides a structural schematic diagram of a liquid crystal display screen for eliminating ITO background shadow.

[0019] Figure 2 for Figure 1 Top view of the middle and lower substrates.

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle and lower substrates and the ITO pattern layer.

[0021] Figure 4 This is a schematic diagram of the structure of Example 2.

[0022] Description of Figure Numbers:

[0023] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; driver IC 6; FPC 7; ITO pattern layer 21;

[0024] The body 71 ; the reinforcing plate 72 ; the connector 73 ; the fixing portion 74 ; the first strong magnetic block 75 ; the second strong magnetic block 76 ; and the groove 77 . DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] In the description of the present invention, 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 invention 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 invention.

[0027] In addition, the terms "first", "second", and "third" 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", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] The utility model provides a liquid crystal display screen for eliminating ITO background shadow, which comprises a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, a driving IC and an FPC are bound to the upper surface of the lower substrate located at the step, an ITO pattern layer is arranged on the upper surface of the lower substrate, the ITO pattern layer is electrically connected to the FPC, and the thickness of the ITO pattern layer is 100Å-300Å.

[0029] The existence of ITO background shadow is due to the difference in reflectivity between the ITO pattern layer and the lower substrate. After a large number of tests, it was found that the thickness of the ITO pattern layer will affect the obviousness of the background shadow. When the thickness of the ITO pattern layer is designed to be between 100Å-300Å, the reflectivity of the ITO pattern layer is close to the reflectivity of the lower substrate. That is, although there is still a difference between the reflectivity of the ITO pattern layer and the reflectivity of the lower substrate, the human eye cannot recognize this difference, and thus the human eye cannot see the ITO background shadow. That is, it can eliminate the ITO background shadow, enhance the visual effect, and improve the competitiveness of the product.

[0030] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, 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 with 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 limitations on the present invention.

[0031] See also Figures 1 to 3, a liquid crystal display screen for eliminating ITO background provided by the utility model, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4 and a cover plate 5 which are stacked in sequence from bottom to top, wherein the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step, a driving IC 6 and an FPC 7 are bound to the upper surface of the lower substrate 2 located at the step, an ITO pattern layer 21 is arranged on the upper surface of the lower substrate 2, the ITO pattern layer 21 is electrically connected to the FPC 7, and the thickness of the ITO pattern layer 21 is 100Å-300Å. The existence of the ITO background shadow is due to the difference in reflectivity between the ITO pattern layer 21 and the lower substrate 2. After a large number of tests, it was found that the thickness of the ITO pattern layer 21 will affect the obviousness of the background shadow. When the thickness of the ITO pattern layer 21 is designed to be between 100Å-300Å, the reflectivity of the ITO pattern layer 21 is close to the reflectivity of the lower substrate 2. That is, although there is still a difference between the reflectivity of the ITO pattern layer 21 and the reflectivity of the lower substrate 2, the human eye cannot recognize this difference, and thus the human eye cannot see the ITO background shadow. That is, it can eliminate the ITO background shadow, enhance the visual effect, and improve the competitiveness of the product.

[0032] See also Figure 4 As a further optimization scheme of Example 1, in this embodiment, FPC7 includes a body 71, a reinforcing plate 72 and a connector 73. The reinforcing plate 72 is fixed to the upper surface of the body 71. Both ends of the reinforcing plate 72 have fixing parts 74 extending outward. The two fixing parts 74 are beyond the edge of the body 71. The lower surfaces of the two fixing parts 74 are fixed with first strong magnetic blocks 75; the connector 73 is arranged below the body 71, and two second strong magnetic blocks 76 corresponding to the two first strong magnetic blocks 75 are fixed on the connector 73. Since the upper surface of the body 71 is fixed with a reinforcing plate 72, both ends of the reinforcing plate 72 are fixed with first strong magnetic blocks 75, and the connector 73 is fixed with two second strong magnetic blocks 76 corresponding to the two first strong magnetic blocks 75, when the body 71 and the connector 73 are installed, as long as the two ends of the body 71 are close to the connector 73, the first strong magnetic blocks 75 at both ends of the body 71 and the second strong magnetic blocks 76 at both ends of the connector 73 will attract each other and be fixed, and the body 71 and the connector 73 can be automatically aligned and tightly connected. This assembly structure of the FPC 7 has few assembly steps, and only needs The assembly can be achieved by bringing the main body 71 and the connector 73 close together. The assembly efficiency of FPC7 can be greatly improved, and the automatic assembly of FPC7 and the connector 73 can be easily realized. The fewer the assembly steps, the lower the probability of defective FPC7 during assembly, thereby avoiding the situation where the products assembled with it cannot work normally due to poor assembly, thereby avoiding abnormal operation of the product and reducing the defective rate of the product, thereby greatly reducing the production and manufacturing costs of FPC7, thereby improving the product competitiveness of FPC7, thereby meeting the company's growing quality requirements.

[0033] Furthermore, two grooves 77 are provided on the connector 73, and two second strong magnetic blocks 76 are respectively fixed in the two grooves 77, so that the fit between the main body 71 and the connector 73 is more compact, and the reliability of assembly is improved, thereby greatly reducing the production and manufacturing costs of FPC7, and further improving the product competitiveness of FPC7, so as to meet the company's growing quality requirements.

[0034] Furthermore, the edge of the groove 77 is provided with a chamfer, and more preferably, the chamfer is a right angle or a rounded angle, so that when the first strong magnetic block 75 is close to the second strong magnetic block 76, it can fall accurately into the groove 77 under the guidance of the chamfer, thereby improving the accuracy and reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC7, and further improving the product competitiveness of FPC7.

[0035] Furthermore, the outer dimensions of the second strong magnetic block 76 are larger than those of the first strong magnetic block 75, and the outer dimensions of the groove 77 correspond to those of the first strong magnetic block 75 and the second strong magnetic block 76, so that the second strong magnetic block 76 can be firmly fixed in the groove 77. Even if the suction force of the first strong magnetic block 75 is large, the second strong magnetic block 76 will not be sucked out, thereby improving the reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC7, and further improving the product competitiveness of FPC7, thereby meeting the company's growing quality requirements.

[0036] Furthermore, the depth of the groove 77 is equal to the sum of the thicknesses of the first strong magnetic block 75 and the second strong magnetic block 76, so that the assembly of the body 71 and the connector 73 can be smoothly fitted without leaving any gaps. More preferably, a buffer pad can be provided on the contact surface between the body 71 and the connector 73, and a buffer groove corresponding to the buffer pad is provided on the connector 73, so that the body 71 or the connector 73 can be cushioned during the fitting assembly to avoid damage to the body 71 or the connector 73. More preferably, the buffer pad is a rubber pad, which has good effect, low cost and high cost performance.

[0037] Furthermore, the materials of the first strong magnetic block 75 and the second strong magnetic block 76 are both NdFeB strong magnets, which have mature technology and high cost performance.

[0038] Furthermore, the first strong magnetic block 75 and the second strong magnetic block 76 have different colors so that the staff can distinguish the first strong magnetic block 75 and the second strong magnetic block 76 during installation.

[0039] In the present invention, 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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 the present invention can be understood according to specific circumstances.

[0040] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen for eliminating ITO background, characterized in that: It includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. The upper surface of the lower substrate located at the step is bound with a driver IC and an FPC. The upper surface of the lower substrate is provided with an ITO pattern layer, the ITO pattern layer is electrically connected to the FPC, and the thickness of the ITO pattern layer is 100Å-300Å.

2. The liquid crystal display screen for eliminating ITO background shadow according to claim 1, characterized in that: The FPC includes a body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the body, both ends of the reinforcement plate have fixed parts extending outward, the two fixed parts are beyond the edge of the body, the lower surfaces of the two fixed parts are fixed with first strong magnetic blocks, the connector is arranged below the body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

3. The liquid crystal display screen for eliminating ITO background shadow according to claim 2, characterized in that: The connector is provided with two grooves, and the two second strong magnetic blocks are respectively fixed in the two grooves.

4. The liquid crystal display screen for eliminating ITO background shadow according to claim 3, characterized in that: The edge of the groove is provided with a chamfer.

5. The liquid crystal display screen for eliminating ITO background shadow according to claim 4, characterized in that: The chamfer is a right angle.

6. The liquid crystal display screen for eliminating ITO background shadow according to claim 4, characterized in that: The chamfer is a rounded corner.

7. The liquid crystal display screen for eliminating ITO background shadow according to claim 3, characterized in that: The outer dimensions of the second strong magnetic block are greater than those of the first strong magnetic block, and the outer dimensions of the groove correspond to those of the first strong magnetic block and the second strong magnetic block.

8. The liquid crystal display screen for eliminating ITO background shadow according to claim 3, characterized in that: The depth of the groove is equal to the sum of the thicknesses of the first strong magnetic block and the second strong magnetic block.

9. The liquid crystal display screen for eliminating ITO background shadow according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block are both made of strong neodymium iron boron magnets.

10. The liquid crystal display screen for eliminating ITO background shadow according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block have different colors.

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