Double-screen liquid crystal display screen capable of avoiding ink step difference

Abstract

The utility model discloses a double-screen liquid crystal display screen avoiding printing ink step difference, which comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, a printing ink layer is arranged on the lower surface of the cover plate, the cover plate comprises a first screen area located on the left side and a second screen area located on the right side, and the first screen area is located on the left side. The portion, located in the first screen area, of the ink layer is provided with frame type first black ink, the portion, located in the second screen area, of the ink layer is provided with frame type second black ink, and the lower surface of the cover plate is coated with high-transparency liquid glue. The high-transparency liquid glue covers the frame-type first black ink, the frame-type second black ink and the lower surface of the cover plate, and the high-transparency liquid glue is fully attached to the upper polaroid through OCA glue. The whole lower surface of the cover plate can be sprayed by adopting a spraying machine, and then the OCA glue is attached to the upper polaroid, so that the condition of bubbles can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a double-screen liquid crystal display screen which avoids ink step difference. Background Art

[0002] At present, the in-vehicle screens include instruments, central control, co-pilot screens and rearview mirror displays, etc., which are generally bonded with OGS TP and LCM modules or cover plates and INCELL-LCM modules. Regardless of OGS TP or cover plates, according to the product structure design requirements, ink will be screen-printed around the cover plates. The middle of the ink is called the viewing area. Since the ink has a certain height, there will be a step difference at the junction of the ink and the viewing area. After the large-size OGS TP or cover plate and the LCM module are fully bonded with OCA glue, bubbles will be generated after full bonding due to the step difference. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to avoid bubbles generated by the step difference when double-screen liquid crystal display screens are attached.

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

[0005] To solve the above technical problems, the utility model provides a dual-screen liquid crystal display screen that avoids ink step differences, comprising a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate that are stacked in sequence from bottom to top, the lower surface of the cover plate is provided with an ink layer, the cover plate comprises a first screen area located on the left and a second screen area located on the right, the ink layer located in the first screen area is provided with a frame-type first black ink, and the ink layer located in the second screen area is provided with a frame-type second black ink, the lower surface of the cover plate is coated with high-transparency liquid glue, the high-transparency liquid glue covers the frame-type first black ink, the frame-type second black ink and the lower surface of the cover plate, and the high-transparency liquid glue is fully bonded to the upper polarizer through OCA glue.

[0006] As a preferred embodiment of the dual-screen LCD display that avoids ink step difference provided by the utility model, a plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the top of the cover plate, and the plastic layer is embedded in the plurality of grooves.

[0007] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the shape of the groove is square or circular.

[0008] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the groove is a closing groove which is narrow on the outside and wide on the inside.

[0009] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the cross-sectional shape of the groove is an isosceles trapezoid.

[0010] As a preferred embodiment of the dual-screen LCD display that avoids ink step difference provided by the utility model, the lower substrate is longer than the upper substrate and extends outward, and a protrusion is provided on the edge of the upper surface of the lower substrate extending outward, and a buffer glue is provided on the upper surface of the lower substrate between the protrusion and the upper substrate, and the buffer glue abuts against the cover plate.

[0011] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the upper surface of the protrusion is flush with the upper surface of the upper substrate.

[0012] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the buffer glue is silicone glue.

[0013] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, a rounded corner is arranged between the protrusion and the lower substrate.

[0014] As a preferred implementation of the dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model, the upper surface of the lower substrate and the side surface of the protrusion are rough surfaces.

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

[0016] Since the lower surface of the cover is coated with highly transparent liquid glue, the highly transparent liquid glue covers the frame-shaped first black ink, the frame-shaped second black ink and the lower surface of the cover, and the cover is bonded to the upper polarizer through the highly transparent liquid glue. Instead of using OCA glue to directly bond the entire lower surface of the cover, a sprayer can be used to spray the entire lower surface of the cover, and the highly transparent liquid glue can fill the step difference between the viewing area and the ink layer, making the entire back of the cover flat without step difference. Then, using OCA glue to bond the upper polarizer can completely avoid the occurrence of bubbles at the step difference position between the ink and the glass viewing area, thereby improving 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 1A schematic structural diagram of a dual-screen liquid crystal display screen for avoiding ink step difference provided by the utility model.

[0019] Figure 2 This is a schematic diagram of the structure of Example 2.

[0020] Figure 3 for Figure 2 Schematic diagram of the decomposition structure.

[0021] Figure 4 for Figure 2 Schematic diagram of the improved structure.

[0022] Figure 5 This is a schematic diagram of the structure of Example 3.

[0023] Description of Figure Numbers:

[0024] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; ink layer 6; frame-shaped first black ink 61; frame-shaped second black ink 62; highly transparent liquid glue 7; OCA glue 8;

[0025] Plastic layer 9; groove 51;

[0026] Protrusion 21; Buffer rubber 22. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The utility model provides a dual-screen liquid crystal display screen for avoiding ink step difference, comprising 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 an ink layer is arranged on the lower surface of the cover plate, the cover plate comprises a first screen area located on the left and a second screen area located on the right, the ink layer located in the first screen area is provided with a frame-type first black ink, and the ink layer located in the second screen area is provided with a frame-type second black ink, the lower surface of the cover plate is coated with high-transparency liquid glue, the high-transparency liquid glue covers the frame-type first black ink, the frame-type second black ink and the lower surface of the cover plate, and the high-transparency liquid glue is fully bonded to the upper polarizer through OCA glue.

[0031] Since the lower surface of the cover is coated with highly transparent liquid glue, the highly transparent liquid glue covers the frame-shaped first black ink, the frame-shaped second black ink and the lower surface of the cover, and the cover is bonded to the upper polarizer through the highly transparent liquid glue. Instead of using OCA glue to directly bond the entire lower surface of the cover, a sprayer can be used to spray the entire lower surface of the cover, and the highly transparent liquid glue can fill the step difference between the viewing area and the ink layer, making the entire back of the cover flat without step difference. Then, using OCA glue to bond the upper polarizer can completely avoid the occurrence of bubbles at the step difference position between the ink and the glass viewing area, thereby improving the competitiveness of the product.

[0032] 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.

[0033] Example 1

[0034] See also Figure 1, a dual-screen liquid crystal display screen for avoiding ink step difference 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 sequentially stacked from bottom to top, the lower polarizer 1, the lower substrate 2, the upper substrate 3 and the upper polarizer 4 form an LCD module, an ink layer 6 is arranged on the lower surface of the cover plate 5, the cover plate 5 comprises a first screen area and a second screen area, the first screen area is located on the left, and the second screen area is located on the right, the ink layer 6 is provided with a frame-type first black ink 61 and a frame-type second black ink 62, the frame-type first black ink 61 is located in the first screen area, and the frame-type second black ink 62 is located in the second screen area, the lower surface of the cover plate 5 is coated with a high-transparency liquid glue 7, the high-transparency liquid glue 7 covers the frame-type first black ink 61, the frame-type second black ink 62 and the lower surface of the cover plate 5, and the high-transparency liquid glue 7 is fully bonded to the upper polarizer 4 through the OCA glue 8. Since the lower surface of the cover plate 5 is coated with a highly transparent liquid glue 7, the highly transparent liquid glue 7 covers the frame-shaped first black ink 61, the frame-shaped second black ink 62 and the lower surface of the cover plate 5, and the cover plate 5 is bonded to the upper polarizer 4 through the highly transparent liquid glue 7. Instead of using the OCA glue 8 to directly bond, the entire lower surface of the cover plate 5 can be sprayed with a sprayer. The highly transparent liquid glue 7 can fill the step difference between the viewing area and the ink layer 6, so that the back of the entire cover plate 5 is flat and there is no step difference. Then, the OCA glue 8 is used to bond the upper polarizer 4, that is, the cover plate 5 is fully bonded to the LCD module through the OCA glue 8, which can completely avoid the occurrence of bubbles at the step difference position between the ink and the glass viewing area, thereby improving the competitiveness of the product.

[0035] Example 2

[0036] See also Figures 2 to 4As a further optimization scheme of Example 1, in this embodiment, the upper surface of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed downward on the upper surface of the cover plate 5 by etching, and a portion of the lower surface of the plastic layer 9 is embedded in each groove 51. Since the surface of the groove 51 formed by etching has a certain degree of roughness, the plastic layer 9 can be tightly bonded to the groove 51 to prevent the cover plate 5 and the plastic layer 9 from falling off. Since the upper part of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed on the upper surface of the cover plate 5 by etching, and the plastic layer 9 can be embedded in the interior of the plurality of grooves 51, the grooves 51 formed by etching make the inner surface of the grooves 51 have a certain degree of roughness, and the surface of the grooves 51 with a certain degree of roughness can improve the bonding force between the grooves 51 and the plastic layer 9, thereby reducing the possibility of separation of the grooves 51 and the plastic layer 9. When the LCD screen is hit or falls, the plastic layer 9 on the upper surface of the cover plate 5 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 5. Since the plastic layer 9 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 5, thereby effectively reducing the risk of the cover plate 5 being broken or damaged; and when the LCD screen is subjected to external force, even if the external force is large, it will only damage the plastic layer 9 on the upper surface of the cover plate 5, and will not directly damage the cover plate 5, thereby preventing the cover plate 5 from being damaged and causing the LCD screen to be unable to be used normally, thereby bringing a better user experience to the user and improving the anti-fall ability of the LCD screen.

[0037] Furthermore, the shape of the groove 51 can be square or circular, and the cross-sectional shape of the groove 51 can be a closing groove that is narrow on the outside and wide on the inside. In the present embodiment, the cross-sectional shape of the groove 51 is an isosceles trapezoid, and the groove 51 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 51 can allow the plastic layer 9 to be tightly embedded in the groove 51, thereby preventing the groove 51 from being separated from the plastic layer 9, thereby preventing the cover plate 5 from falling off from the plastic layer 9. The elongated groove 51 can increase the fitting portion between the plastic layer 9 and the groove 51, thereby increasing the fitting strength between the groove 51 and the plastic layer 9.

[0038] Example 3

[0039] See also Figure 5As a further optimization scheme of Example 1, in this embodiment, the lower substrate 2 is longer than the upper substrate 3 and extends outward, and a protrusion 21 is provided on the edge of the upper surface of the lower substrate 2 extending outward, and a buffer glue 22 is provided on the upper surface of the lower substrate 2 between the protrusion 21 and the upper substrate 3, and the buffer glue 22 abuts against the cover plate 5. Since the edge of the lower substrate 2 is provided with a protrusion 21, the protrusion 21 can limit the flow of the buffer glue 22, so that the shape of the buffer glue 22 is easy to control, and there will be no overflow of glue or incomplete glue dispensing. Thereby preventing the LCD screen from being unable to be assembled with the casing. In addition, the problem of poor buffering effect caused by incomplete glue dispensing and easy rupture of the lower substrate 2 is avoided, and the LCD screen is prevented from displaying abnormally.

[0040] Furthermore, the upper surface of the protrusion 21 is flush with the upper surface of the upper substrate 3 to further limit the flow of the buffer glue 22, so that the shape of the buffer glue 22 is easy to control without overflowing glue or incomplete glue dispensing.

[0041] Furthermore, the buffer glue 22 is silicone glue.

[0042] Furthermore, a chamfer is provided between the protrusion 21 and the lower substrate 2 so that the buffer glue 22 can more easily fill the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3. The protrusion 21 with a chamfer can make the buffer glue 22 flow more smoothly into the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3, making it less likely for bubbles to appear.

[0043] Furthermore, the upper surface of the lower substrate 2 and the side surfaces of the protrusions 21 are rough surfaces to improve the fixing effect of the buffer glue 22 .

[0044] Furthermore, the rough surface is a frosted surface or a diamond knurled surface to further improve the fixing effect of the buffer glue 22 .

[0045] 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.

[0046] 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 dual-screen liquid crystal display screen that avoids ink step difference, 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, an ink layer is arranged on the lower surface of the cover plate, the cover plate includes a first screen area located on the left and a second screen area located on the right, the ink layer located in the first screen area is provided with a frame-type first black ink, and the ink layer located in the second screen area is provided with a frame-type second black ink, the lower surface of the cover plate is coated with high-transparency liquid glue, the high-transparency liquid glue covers the frame-type first black ink, the frame-type second black ink and the lower surface of the cover plate, and the high-transparency liquid glue is fully bonded to the upper polarizer through OCA glue.

2. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 1, characterized in that: A plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

3. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 2, characterized in that: The shape of the groove is square or circular.

4. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 2, characterized in that: The groove is a closing groove which is narrow outside and wide inside.

5. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 4, characterized in that: The cross-sectional shape of the groove is an isosceles trapezoid.

6. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 1, characterized in that: The lower substrate is longer than the upper substrate and extends outwards, a protrusion is arranged on the edge of the upper surface of the lower substrate extending outwards, a buffer glue is arranged on the upper surface of the lower substrate between the protrusion and the upper substrate, and the buffer glue abuts against the cover plate.

7. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 6, characterized in that: An upper surface of the protrusion is flush with an upper surface of the upper substrate.

8. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 6, characterized in that: The buffer glue is silicone glue.

9. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 6, characterized in that: A rounded corner is arranged between the protrusion and the lower substrate.

10. The dual-screen liquid crystal display screen for avoiding ink step difference according to claim 6, characterized in that: The upper surface of the lower substrate and the side surfaces of the protrusion are rough surfaces.

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