Liquid crystal display screen with keys provided with backlight sources

Abstract

The utility model discloses a liquid crystal display screen with keys provided with backlight sources, which comprises a lower polaroid, a large piece of glass, a small piece of glass, an upper polaroid and a glass cover plate which are sequentially overlapped from bottom to top, and the large piece of glass is longer than the small piece of glass and extends outwards to form a step. A step is arranged on the upper surface of the large piece of glass, a driving IC is bound on the upper surface of the large piece of glass located at the step, a flexible circuit board is arranged below the glass cover plate, the flexible circuit board is provided with a key induction circuit and an LED lamp, the key induction circuit is located above the driving IC, a first layer of shading ink is arranged on the lower surface of the glass cover plate, and a second layer of shading ink is arranged on the lower surface of the glass cover plate. Secondary-layer shading ink is arranged on the lower surface of the first-layer shading ink, at least one hollow-out part is arranged at the first-layer shading ink and the secondary-layer shading ink, semi-permeable ink is arranged at the hollow-out part, diffusion ink is arranged below the semi-permeable ink, and the diffusion ink is arranged below the semi-permeable ink. And the position of the hollow part corresponds to the position of the key sensing circuit. And only the cost of the flexible circuit board is lost when scrapped during manufacturing.

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 with buttons having a backlight source. Background Art

[0002] Traditional glass cover plates with button functions usually have sensing circuits on the lower surface of the glass cover plates to realize the button functions. However, the cost of glass cover plates is high and the yield rate is low. Once the glass cover plates are scrapped during the manufacturing process, the losses will be large. In addition, the buttons on the glass cover plates of traditional LCD screens have no backlight source. They generally need to be seen by users in light. In some dim environments, users cannot find the buttons, which brings a bad user experience and reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to reduce the loss when the product is scrapped during the manufacturing process, and the keys have their own backlight so that they can be used normally in dim environments, bringing users a better use experience and improving the competitiveness of the product.

[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 liquid crystal display screen with built-in backlight sources for keys, comprising a lower polarizer, a large piece of glass, a small piece of glass, an upper polarizer and a glass cover plate which are sequentially stacked from bottom to top, the large piece of glass being longer than the small piece of glass and extending outward to form a step, a driver IC being bound to the upper surface of the large piece of glass located at the step, a flexible circuit board being arranged below the glass cover plate, a key sensing circuit and an LED light being arranged on the flexible circuit board, the key sensing circuit being located above the driver IC, a first layer of light-shielding ink being arranged on the lower surface of the glass cover plate, a second layer of light-shielding ink being arranged on the lower surface of the first layer of light-shielding ink, at least one hollow portion being arranged at the first layer of light-shielding ink and the second layer of light-shielding ink, semi-transparent ink being arranged at the hollow portion, diffusion ink being arranged below the semi-transparent ink, and the position of the hollow portion corresponding to the position of the key sensing circuit.

[0006] As a preferred implementation of the liquid crystal display screen with built-in backlight source provided by the utility model, the semi-transparent ink is white ink.

[0007] As a preferred implementation of the liquid crystal display screen with built-in backlight source provided by the utility model, the transmittance of the semi-transparent ink is 5%-20%.

[0008] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, the thickness of the semi-transparent ink is 0.005 mm - 0.015 mm.

[0009] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, an anti-fingerprint film is provided on the upper surface of the glass cover plate.

[0010] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, the thickness of the anti-fingerprint film is 1 μm to 10 μm.

[0011] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, a surface treatment layer for improving the surface roughness is provided on the upper surface of the glass cover plate in the non-visible area.

[0012] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, the surface treatment layer is a matte treatment layer or an etching treatment layer.

[0013] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, an adhesive layer is provided on the lower surface of the anti-fingerprint film in the non-visible area.

[0014] As a preferred embodiment of the liquid crystal display screen with a backlight built into the button provided by the present utility model, the thickness of the adhesive layer is 0.5 μm.

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

[0016] Since the button sensing circuit is provided on the flexible printed circuit board, even if there is a scrap during the manufacturing process, only the cost of the flexible printed circuit board is lost, which is much lower than the cost of the glass cover plate, reducing losses; the button sensing circuit is located above the driving IC, and the position of the non-display area can be very well utilized for layout, without increasing the occupied area of the non-display area, thereby reducing the bezel; and the flexible printed circuit board has a built-in backlight, so that it can be used normally in a dim environment, bringing a better user experience to users and improving the competitiveness of the product. Description of the Drawings

[0017] In order to more clearly illustrate the solutions in the present application, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1The utility model provides a structural schematic diagram of a liquid crystal display screen with built-in backlight sources for keys.

[0019] Figure 2 for Figure 1 Top view of the .

[0020] Figure 3 It is a schematic diagram of the structure at the glass cover.

[0021] Figure 4 Schematic diagram of the improved structure of the glass cover.

[0022] Description of Figure Numbers:

[0023] Lower polarizer 1; large glass 2; small glass 3; upper polarizer 4; glass cover 5; driver IC 6; flexible circuit board 7; first layer of shading ink 51; second layer of shading ink 52; semi-transparent ink 53; diffusion ink 54;

[0024] Anti-fingerprint film8. 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 with a backlight on the button, which comprises a lower polarizer, a large glass sheet, a small glass sheet, an upper polarizer and a glass cover plate stacked in sequence from bottom to top. The large glass sheet is longer than the small glass sheet and extends outwards to form a step. A driving IC is bonded to the upper surface of the large glass sheet at the step. A flexible circuit board is arranged below the glass cover plate. The flexible circuit board is provided with a button sensing circuit and an LED lamp. The button sensing circuit is located above the driving IC. A first-layer light-shielding ink is arranged on the lower surface of the glass cover plate. A second-layer light-shielding ink is arranged on the lower surface of the first-layer light-shielding ink. At least one hollow part is arranged at the first-layer light-shielding ink and the second-layer light-shielding ink. A semi-transparent ink is arranged at the hollow part. A diffusion ink is arranged below the semi-transparent ink. The position of the hollow part corresponds to the position of the button sensing circuit.

[0029] Since the button sensing circuit is arranged on the flexible circuit board, even if it is scrapped during the production process, only the cost of the flexible circuit board is lost, which is much lower than the cost of the glass cover plate, reducing the loss. The button sensing circuit is located above the driving IC, and the position of the non-display area can be very well utilized for layout, without increasing the occupied area of the non-display area, thereby reducing the border. Moreover, the flexible circuit board has a built-in backlight, so that it can be used normally in a dim environment, bringing a better use experience to the user and improving the competitiveness of the product.

[0030] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings. The present invention will be described in detail below with reference to the drawings and embodiments. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0031] Example 1, please refer to Figures 1 to 3, a liquid crystal display screen with a backlight built into the button provided by the present utility model, which includes a lower polarizer 1, a large glass sheet 2, a small glass sheet 3, an upper polarizer 4, and a glass cover plate 5 sequentially stacked from bottom to top. The large glass sheet 2 is longer than the small glass sheet 3 and extends outward to form a step. A driving IC 6 is bonded to the upper surface of the large glass sheet 2 at the step. A flexible printed circuit board 7 is provided below the glass cover plate 5. The flexible printed circuit board 7 is provided with a button sensing circuit and an LED lamp. The button sensing circuit is located above the driving IC 6. A first layer of light-shielding ink 51 is provided on the lower surface of the glass cover plate 5. A second layer of light-shielding ink 52 is provided on the lower surface of the first layer of light-shielding ink 51. At least one hollow portion is provided at the first layer of light-shielding ink 51 and the second layer of light-shielding ink 52. A semi-transparent ink 53 is provided at the hollow portion. A diffusion ink 54 is provided below the semi-transparent ink 53. The function of the diffusion ink 54 is to scatter the light emitted by the LED lamp, so that the button pattern seen from the front is evenly displayed. The position of the hollow portion corresponds to the position of the button sensing circuit. Since the button sensing circuit is provided on the flexible printed circuit board 7, even if it is scrapped during the manufacturing process, only the cost of the flexible printed circuit board 7 is lost, which is much lower than the cost of the glass cover plate 5, reducing losses; the button sensing circuit is located above the driving IC 6, and the position of the non-display area can be very well utilized for layout, without increasing the occupied area of the non-display area, thereby reducing the border; and the flexible printed circuit board 7 has a built-in backlight, so that it can be used normally in a dim environment, bringing a better user experience and improving the competitiveness of the product.

[0032] Further, the semi-transparent ink 53 is white ink, the transmittance of the semi-transparent ink 53 is 5%-20%, and the thickness of the semi-transparent ink 53 is 0.005mm-0.015mm.

[0033] Example 2, please refer to Figure 4 , as a further optimized solution of Example 1, in this embodiment, an anti-fingerprint film 8 is provided on the upper surface of the glass cover plate 5, so that fingerprints can be avoided from remaining on the surface of the glass cover plate 5 during the use process by the user, thereby enhancing the beauty of the liquid crystal display screen and improving the competitiveness of the product.

[0034] Further, the thickness of the anti-fingerprint film 8 is 1μm to 10μm.

[0035] Further, a surface treatment layer for enhancing the surface roughness is provided on the upper surface of the glass cover plate 5 in the non-visible area, and the surface treatment layer is a matte treatment layer or an etching treatment layer. An adhesive layer is provided on the lower surface of the anti-fingerprint film 8 in the non-visible area, so that the anti-fingerprint film 8 can be more firmly adhered to the upper surface of the glass cover plate 5. More preferably, the thickness of the adhesive layer is 0.5μm.

[0036] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection, or communication with each other; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all of the embodiments. The accompanying drawings show the preferred embodiments of the present application, but 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 disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields shall be within the scope of the patent protection of the present application by the same token.

Claims

1. A liquid crystal display with a backlight built into the button, characterized in that, It includes a lower polarizer, a large glass sheet, a small glass sheet, an upper polarizer and a glass cover plate which are sequentially stacked from bottom to top. The large glass sheet is longer than the small glass sheet and extends outwards to form a step. A driving IC is bonded to the upper surface of the large glass sheet at the step. A flexible circuit board is disposed below the glass cover plate. The flexible circuit board is provided with a key sensing circuit and an LED lamp. The key sensing circuit is located above the driving IC. A first-layer light-shielding ink is disposed on the lower surface of the glass cover plate. A second-layer light-shielding ink is disposed on the lower surface of the first-layer light-shielding ink. At least one hollow portion is provided at the first-layer light-shielding ink and the second-layer light-shielding ink. A semi-transparent ink is provided at the hollow portion. A diffusion ink is disposed below the semi-transparent ink. The position of the hollow portion corresponds to the position of the key sensing circuit.

2. The liquid crystal display screen with a backlight on the button according to claim 1, wherein The semi-transparent ink is white ink.

3. The liquid crystal display screen with a backlight on the button according to claim 1, characterized in that, The transmittance of the semi-transparent ink is 5% - 20%.

4. The liquid crystal display screen with a built-in backlight for the button according to claim 1, characterized in that, The thickness of the semi-transparent ink is 0.005 mm - 0.015 mm.

5. The liquid crystal display screen with a backlight built into the button according to claim 1, wherein, An anti-fingerprint film is disposed on the upper surface of the glass cover plate.

6. The liquid crystal display screen with a backlight built into the button according to claim 5, wherein, The thickness of the anti-fingerprint film is 1 μm to 10 μm.

7. The liquid crystal display screen with a built-in backlight for the button according to claim 5, wherein A surface treatment layer for enhancing the surface roughness is disposed on the upper surface of the glass cover plate in the non-visible area.

8. The liquid crystal display screen with a backlight on the button according to claim 7, characterized in that, The surface treatment layer is a matte treatment layer or an etching treatment layer.

9. The liquid crystal display screen with a backlight on the button according to claim 5, characterized in that, An adhesive layer is disposed on the lower surface of the anti-fingerprint film in the non-visible area.

10. The liquid crystal display screen with a backlight built into the button according to claim 9, wherein The thickness of the adhesive layer is 0.5 μm.

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