Modularized visual key keyboard

Abstract

The utility model discloses a modularized visual key keyboard, which relates to the technical field of electronic equipment manufacturing and comprises a display layer, the display layer comprises a liquid crystal screen and a glass cover plate, the liquid crystal screen is adhered to the glass cover plate through OCA optical structural adhesive, and the surface of the glass cover plate is fixedly connected with a key lower circuit board through structural adhesive. An upper key circuit board is fixed to the surface of the lower key circuit board in an isolated mode through a plurality of structural adhesive tapes, the upper key circuit board is fixedly connected with a key layer through structural adhesive, and a supporting and protecting layer is arranged on the key layer, so that the liquid crystal screen, the lower key circuit board, the upper key circuit board, the key layer and the supporting and protecting layer are organically integrated into an integral module. When the key layer is pressed, the electrode of the key upper circuit board can be in contact with the electrode of the key lower circuit board, and the display layer, the key lower circuit board, the key upper circuit board, the key layer and the supporting protective layer are permanently adhered into a whole, so that reliable adhesion, excellent display effect and assembling simplicity and convenience among the components are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment manufacturing technical field especially relates to a modular visual key keyboard. BACKGROUND

[0002] Keyboard is a kind of input device, and it is composed of a series of keys, which is used to input instructions or data to electronic equipment.

[0003] The existing keyboard device has the following shortcomings: (1) dynamic display and entity key touch feeling are difficult to consider; (2) in the design of keyboard multifunctional layer, the cooperation is not firm or the components are misaligned, which leads to poor reliability and complex assembly; (3) the keyboards cannot realize high light transmittance, low light reflection and high stability of multi-layer combination module. UTILITY MODEL CONTENT

[0004] The utility model discloses a purpose that by the permanent adhesion of display layer, key lower circuit board, key upper circuit board, key layer and support protection layer as a whole, the reliable bonding between each component, excellent display effect and the simplicity of assembly are ensured.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technology:

[0006] A kind of modular visual key keyboard, including display layer, the display layer includes liquid crystal screen and glass cover plate, the liquid crystal screen is adhered with glass cover plate by OCA optical structure glue, the surface of the glass cover plate is fixedly connected with key lower circuit board by structure glue, the surface of the key lower circuit board is fixed with key upper circuit board by a plurality of structure glue strips, the key upper circuit board is fixedly connected with key layer by structure glue, support protection layer is arranged on the key layer, so that liquid crystal screen, key lower circuit board, key upper circuit board, key layer and support protection layer are organically integrated into one whole module, and when pressing key layer, the key upper circuit board and key lower circuit board electrode contact can be formed.

[0007] As a further description of the above technical solutions: the key layer includes silica gel elastic support fixed on the key upper circuit board by structure glue;

[0008] The top of the silica gel elastic support is fixed with matrix distribution optical transparent key by structure glue.

[0009] As a further description of the above technical solutions: one side or both sides of the silica gel elastic support is integrally formed with arc convex point, and the arc convex point can make the key upper circuit board and the key lower circuit board electrode contact when pressing the optical transparent key.

[0010] As a further description of the above technical solution: the support protection layer comprises a carbon fiber plate fixed on the surface of the silica gel elastic support through structural adhesive, and the surface of the carbon fiber plate is coated with a layer of flexible coating material.

[0011] As a further description of the above technical solution: the flexible coating material is one of acetate cloth, PET film, PC film, PP film, PE film and PI film.

[0012] As a further description of the above technical solution: the structural adhesive is OCA optical transparent adhesive, the thickness of the OCA optical transparent adhesive is 50-1500 μm, and the light transmittance is greater than 98%.

[0013] The beneficial effects of the utility model are: the display layer, the lower circuit board of the key, the upper circuit board of the key, the key layer and the support protection layer are permanently adhered as a whole through the OCA optical transparent adhesive, the reliable adhesion between various components, the excellent display effect and the simplicity of assembly are ensured, the modular design is convenient for overall assembly and mass production, and the production complexity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 An overall structure schematic view provided by the embodiment of the utility model is shown;

[0015] Figure 2 A partial structure sectional view of the optical transparent key provided by the embodiment of the utility model is shown;

[0016] Figure 3 An overall structure schematic view provided by the embodiment of the utility model is shown; Figure 3 An enlarged view of A in the middle;

[0017] Figure 4 An overall structure schematic view provided by the embodiment of the utility model is shown; Figure 3 An enlarged view of B in the middle.

[0018] LEGEND:

[0019] 1, display layer; 1a, liquid crystal screen; 1b, glass cover plate; 2, lower circuit board of key; 3, structural adhesive tape; 4, upper circuit board of key; 5, key layer; 5a, silica gel elastic support; 5b, optical transparent key; 6, support protection layer; 6a, carbon fiber plate; 6b, flexible coating material. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] With reference to Figures 1-4 The modular visual key keyboard provided by the embodiment comprises a display layer 1, the display layer 1 comprises a liquid crystal screen 1a and a glass cover plate 1b, the liquid crystal screen 1a is adhered to the glass cover plate 1b through OCA optical structural glue, the liquid crystal screen 1a interacts with a host computer and is used for displaying variable information. In addition, a lower key circuit board 2 is fixedly connected to the surface of the glass cover plate 1b through structural glue, a upper key circuit board 4 is fixedly connected to the surface of the lower key circuit board 2 through a plurality of structural adhesive tapes 3, the upper key circuit board 4 is fixedly connected to a key layer 5 through structural glue, and the key layer 5 is provided with a support protection layer 6, so that the liquid crystal screen 1a, the lower key circuit board 2, the upper key circuit board 4, the key layer 5 and the support protection layer 6 are organically integrated into a whole module, the modular design simplifies the assembly process, and the whole is formed through OCA optical structural glue or structural glue adhesion between the layers without the need for additional positioning or mechanical fastening devices. In addition, the bottom layer adopts the liquid crystal screen 1a, the key matrix circuit layer is adhered through OCA full bonding technology, and the light transmission and low reflection effect are ensured.

[0022] In specific implementation, the electrode of the upper key circuit board 4 and the lower key circuit board 2 can be contacted by pressing the key layer 5. The upper key circuit board 4 and the lower key circuit board 2 are connected with the host computer, and the output signal realizes dynamic display of self-definable operation content.

[0023] In an embodiment of the present application, the key layer 5 comprises a silica gel elastic support 5a fixed on the upper key circuit board 4 through structural glue, and a matrix-distributed optical transparent key 5b is fixed to the top end of the silica gel elastic support 5a through structural glue. The silica gel elastic support 5a can provide key pressing feedback of the optical transparent key 5b, and the optical transparent key 5b can provide transparent key touch feedback. Preferably, the material of the optical transparent key 5b is one of transparent glass, acrylic and PC.

[0024] In one embodiment of the utility model, one side or both sides of silica gel elastic support 5a is integrally formed with arc convex point 5c, and the arc convex point 5c can make the upper circuit board 4 of the button and the lower circuit board 2 of the button contact when pressing the optical transparent button 5b. Wherein, when pressing the optical transparent button 5b, the silica gel elastic support 5a can be deformed, and the arc convex point 5c formed on one side or both sides can press the upper circuit board 4 of the button, so that the upper circuit board 4 of the button and the electrode of the lower circuit board 2 contact to output signals.

[0025] In one embodiment of the utility model, the support protection layer 6 includes carbon fiber plate 6a fixed on the surface of silica gel elastic support 5a by structural glue, and the surface of the carbon fiber plate 6a is coated with a layer of flexible coating material 6b. Preferably, the flexible coating material 6b includes but is not limited to one of acetic acid cloth, PET film, PC film, PP film, PE film and PI film.

[0026] Wherein, the flexible coating material 6b has the functions of dustproof, protection and buffering, can reduce scratching and abrasion, and prolong the service life of the keyboard. The carbon fiber plate 6a has the characteristics of high strength and high flatness, and is light in weight, and is used for reinforcing and reinforcing various structures.

[0027] In one embodiment of the utility model, the structural glue is OCA optical transparent glue, and the thickness of the OCA optical transparent glue is 50-1500 μm, and the light transmittance is greater than 98%. The thickness of the optical transparent glue is 50 μm-1500 μm, the light transmittance is greater than 98%, the performance of high adhesive strength (≥0.5 MPa) is ensured, the optical performance of the multi-layer laminated structure is excellent, and there is no bubble and no color difference.

[0028] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A modular visual key keyboard comprising a display layer (1) comprising a liquid crystal screen (1a) and a glass cover plate (1b) which are adhered by OCA optical structural adhesive, characterized in that: a key lower circuit board (2) is fixedly connected to the surface of the glass cover plate (1b) by structural adhesive, a key upper circuit board (4) is fixedly connected to the surface of the key lower circuit board (2) by a plurality of structural adhesive tapes (3), a key layer (5) is fixedly connected to the key upper circuit board (4) by structural adhesive, and a support protection layer (6) is arranged on the key layer (5), so that the liquid crystal screen (1a), the key lower circuit board (2), the key upper circuit board (4), the key layer (5) and the support protection layer (6) are organically integrated into a whole module, and when the key layer (5) is pressed, the key upper circuit board (4) and the key lower circuit board (2) can be in electrode contact.

2. A modular visual key pad as claimed in claim 1, wherein, The key layer (5) comprises a silica gel elastic support (5a) fixed on the key upper circuit board (4) by structural adhesive. The top end of the silica gel elastic support (5a) is fixed with a matrix-distributed optical transparent key (5b) by structural adhesive.

3. A modular visual key pad as claimed in claim 2, wherein, One side or both sides of the bottom of the silica gel elastic support (5a) is integrally formed with an arc-shaped protrusion (5c), and the arc-shaped protrusion (5c) can make the key upper circuit board (4) and the key lower circuit board (2) in electrode contact when the optical transparent key (5b) is pressed.

4. A modular visual key pad as claimed in claim 2 or 3, wherein, The support protection layer (6) comprises a carbon fiber plate (6a) fixed on the surface of the silica gel elastic support (5a) by structural adhesive, and the surface of the carbon fiber plate (6a) is covered with a layer of flexible coating material (6b).

5. A modular visual key pad as claimed in claim 4, wherein, The flexible coating material (6b) is one of acetic acid cloth, PET film, PC film, PP film, PE film and PI film.

6. The modular visual key pad of claim 1, wherein, The structural adhesive is OCA optical transparent adhesive, the thickness of the OCA optical transparent adhesive is 50-1500 μm, and the light transmittance is greater than 98%.

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