TWM578464U - Improved structure for membrane key press plate - Google Patents

Abstract

The invention relates to a modified structure of a film type keyboard body, comprising a bottom surface of a substrate for adhering to a surface of a device; a circuit board having at least one metal elastic piece inside; a skin comprising a skin base layer, a plating layer, a dielectric layer and a printing a layer and a protective film, the skin base layer is bonded to the top surface of the circuit board, and the bottom surface has a groove corresponding to the metal elastic piece, the groove has a convex column at the center, and the plating layer is formed on the top surface of the skin base layer. The dielectric layer is bonded to the top surface of the plating layer, and the printed layer is formed on the top surface of the dielectric layer, and a hollow pattern is formed corresponding to the metal dome, and the protective film is transparent and is bonded to the top surface of the printed layer. By this, the operation control can be made more realistic, and the metal button pattern can be formed to greatly enhance the overall texture and beauty.

Description

Thin film type key plate improved structure

The present invention relates to the technical field of the structure of a film button, and more particularly to a film type key plate improved structure which can make the operation control more reliable and can form a metallic button pattern to greatly enhance the overall texture and beauty. .

A conventional membrane button, as shown in FIG. 1, is mainly composed of a substrate 10, a circuit board 11 and a side skin 12. The bottom surface of the substrate 10 has an adhesive layer 100 for adhering to a device surface. The circuit board 11 includes a spring pinned layer 110, a lower circuit layer 111, an upper circuit layer 112, and at least one metal dome 113. The shrapnel fixing layer 110 has at least one elastic hole 114 therein. The lower circuit layer 111 is bonded to the bottom surface of the elastic plate fixing layer 110, and the bottom surface is coupled to the top surface of the substrate 10. The lower circuit layer 111 is provided with a line passing through the elastic hole 114. The upper circuit layer 112 is bonded to the top surface of the elastic sheet fixing layer 110, and the inner wiring is provided through the line in the elastic hole 114. The metal dome 113 is formed in a circular arc shape and is disposed in the elastic hole 114. The top surface is in contact with the line in the upper circuit layer 112, and can be elastically deformed by pressing to make the center and the lower circuit layer 111. The line contact is made to cause the lines of the upper and lower circuit layers 112, 111 to be turned on. The skin 12 includes a skin base layer 120, a printing layer 121, and a protective film 122. The skin base layer 120 is a plastic plastic material The bottom surface is bonded to the top surface of the upper circuit layer 112. The printed layer 121 is disposed on the top surface of the skin base layer 120, and a button pattern 123 is formed corresponding to the metal dome 113. The protective film 122 is transparent and bonded to the top surface of the printed layer 121 to protect the printed layer 121.

However, since the dough 12 is a sheet having the same thickness, it is not only required to apply a large force when the metal dome 113 is pressed, but also a touch feeling of pressing is not easily felt. In particular, it is necessary to align the center of the button pattern 123 (ie, the center of the metal dome 113) so that the center of the metal dome 113 is elastically deformed by pressing, so that the lines of the upper and lower circuit layers 112 and 111 are turned on. If the pressing position is slightly offset, the metal dome 113 cannot be connected to the line of the lower wiring layer 111, so there is often a problem that the operation control is not correct. In particular, the button patterns 123 on the dough 12 are formed by printing, so that the shape is monotonous and not textured and aesthetic.

The main purpose of this creation is to solve the problem that the operation control of the conventional film button is less accurate and the button pattern is monotonous without texture and beauty.

The improved structure of the film type key sheet body described in the present invention comprises a substrate, a circuit board and a side skin. Wherein, the bottom surface of the substrate has an adhesive layer for adhering to a surface of a device. The circuit board has at least one metal dome inside to be elastically pressed to control the operation of the device. The dough comprises a skin base layer, a plating layer, a dielectric layer, a printing layer and a protective film. The skin base layer is made of plastic plastic material and the bottom surface is combined on the top surface of the circuit board, and the bottom surface has corresponding metal shrapnel One of the grooves having a stud in the center. The plating layer is a metal layer formed on the top surface of the skin base layer. The dielectric layer is bonded to the top surface of the plating layer and the plating layer is visible from the outside. The printing layer is formed on the top surface of the dielectric layer, and a hollow pattern is formed corresponding to the printing of the metal dome, so that the plating layer of the bottom can be seen from the upper side through the hollow pattern to form a button pattern having a metallic feeling. The protective film is transparent and bonded to the top surface of the printed layer to protect the printed layer.

The improved structure of the film type button body provided by the present invention is designed by the fact that the base layer of the dough skin is made of a plastic plastic material and the bottom surface corresponds to the groove of the metal spring piece and the structure of the protrusion of the center of the groove. The utility model not only has a good and clear pressing touch feeling, but also can push the center of the metal dome to push the center of the metal dome to form a guiding state regardless of pressing to the center or the outside of the button pattern, so that the operation control can be made more reliable. In particular, the dough is formed by plating a plating layer on the top surface of the base layer of the dough, and then forming a plating pattern formed by the printed layer above the plating layer, so that the upper side can be formed by seeing the plating layer at the bottom through the hollow pattern. Metallic button pattern, so it can greatly enhance the overall texture and beauty.

[Prior technology]

10‧‧‧Substrate

100‧‧‧Adhesive layer

11‧‧‧ boards

110‧‧‧Sheet fixed layer

111‧‧‧lower circuit layer

112‧‧‧Upper circuit layer

113‧‧‧Metal shrapnel

114‧‧‧Sheet hole

12‧‧‧Face

120‧‧‧ skin base

121‧‧‧Printing layer

122‧‧‧Protective film

123‧‧‧ button pattern

[This creation]

20‧‧‧Substrate

21‧‧‧Adhesive layer

30‧‧‧ boards

31‧‧‧Sheet fixed layer

32‧‧‧Lower circuit layer

33‧‧‧Upper circuit layer

34‧‧‧Metal shrapnel

35‧‧‧Sheet hole

36‧‧‧Electrostatic mesh

40‧‧‧Face

41‧‧‧ skin base

42‧‧‧Electroplating

43‧‧‧ dielectric layer

44‧‧‧Printing layer

45‧‧‧Protective film

46‧‧‧ Groove

47‧‧‧Bump

48‧‧‧ hollow pattern

49‧‧‧ button pattern

Figure 1 is a schematic enlarged cross-sectional view of a conventional membrane button.

Figure 2 is an enlarged schematic exploded view of the cross section of the present creation.

Figure 3 is an enlarged schematic view of the combined cross section of the present creation.

Figure 4 is a partial plan view of the creation.

Figure 5 is another embodiment of the present creation.

Referring to FIGS. 2 to 4, the improved structure of the film type key sheet body of the present invention includes a substrate 20, a circuit board 30, and a side skin 40. among them:

The substrate 20 has an adhesive layer 21 for adhering to a surface of the device, and the adhesive layer 21 can be a double-sided tape.

The circuit board 30 includes a spring pinned layer 31, a lower circuit layer 32, an upper circuit layer 33, and at least one metal dome 34. The elastic piece fixing layer 31 has at least one elastic hole 35 thereon. The lower circuit layer 32 is bonded to the bottom surface of the elastic plate fixing layer 31, and the bottom surface is coupled to the top surface of the substrate 20. The lower circuit layer 32 is provided with a line passing through the elastic hole 35. The upper circuit layer 33 is bonded to the top surface of the elastic sheet fixing layer 31, and the inner wiring is provided with a line passing through the elastic hole 35. The metal dome 34 is formed in a circular arc shape and is disposed in the elastic hole 35. The top surface is in contact with the line in the upper circuit layer 33, and can be elastically deformed by pressing to make the center and the lower circuit layer 32. The line contact is made to cause the lines of the upper and lower circuit layers 33, 32 to be turned on. Moreover, the lines of the upper and lower circuit layers 33, 32 are routed to the device for controlling the operation of the device.

The dough 40 includes a skin base layer 41, a plating layer 42, a dielectric layer 43, a printed layer 44, and a protective film 45. The skin base layer 41 is made of a plastic plastic material, and the bottom surface is coupled to the top surface of the upper circuit layer 33. The bottom surface of the skin base layer 41 has a groove 46 corresponding to the metal elastic piece 34. The groove 46 has a convex portion at the center. Column 47. The plating layer 42 is formed on one of the metal layers on the top surface of the skin base layer 41 by electroplating. The dielectric layer 43 can be transparent or translucent and bonded to the top surface of the plating layer 42. The printed layer 44 is formed on the dielectric layer 43 by printing. The top surface of the metal shrapnel 34 is formed with a hollow pattern 48 so that the bottom plating layer 42 can be seen through the hollow pattern 48 from the upper side to form a metal button pattern 49. The protective film 45 is transparent and bonded to the top surface of the printed layer 44 to protect the printed layer 44.

Referring to FIG. 5, it is another embodiment of the improved structure of the film type button body of the present invention, and the structure thereof is substantially the same as that of the above embodiment, except that the circuit board 30 of the embodiment further includes a circuit board 30. The electrostatic mesh layer 36 is bonded to the top surface of the upper wiring layer 33, and the surface 40 is bonded to the top surface of the electrostatic mesh layer 36.

The improved structure of the film type button body provided by the present invention is that the skin base layer 41 of the dough 40 is made of a plastic plastic material and the bottom surface corresponds to the groove 46 of the metal elastic piece 34 and the protrusion 47 of the center of the groove 46. The structural design is such that it not only has a good and clear pressing touch feeling, but also can be linked to the central or outer side of the button pattern 49, and the protruding post 47 pushes the center of the metal dome 34 to guide the lower circuit layer 32. The line, therefore, makes the operation control more accurate. In particular, the dough 40 is coated with a plating layer 42 on the top surface of the skin base layer 41, and then a hollow pattern 48 is formed by the printing layer 44 located above the plating layer 42, and the bottom surface can be seen through the hollow pattern 48 from the upper side. The plating layer 42 forms a button pattern 49 having a metallic feeling, so that the overall texture and aesthetics can be greatly improved.

In summary, since this creation has the above advantages and practical value, and there is no similar product publication in similar products, it has already met the application requirements of the new patent, and is filed according to law.

Claims (6)

A modified structure of a film type keyboard body comprises: a substrate having an adhesive layer on the bottom surface for adhering to a surface of a device; and a circuit board having at least one metal elastic piece for elastically pressing to control the operation of the device; And a skin comprising a skin base layer, a plating layer, a dielectric layer, a printing layer and a protective film, the skin base layer is a plastic plastic material and the bottom surface is bonded to the top surface of the circuit board, and the bottom surface has corresponding metal shrapnel a groove having a protrusion in the center of the groove, the plating layer being a metal layer formed on a top surface of the skin base layer, the dielectric layer being bonded to the top surface of the plating layer, and being visible from the outside An electroplated layer is formed on the top surface of the dielectric layer, and a hollow pattern is formed corresponding to the printing of the metal dome, so that a plating layer of the bottom can be seen through the hollow pattern through the upper side to form a button with a metallic feeling. a pattern that is transparent and bonded to the top surface of the printed layer to protect the printed layer. The improved structure of the film type key sheet body according to claim 1, wherein the adhesive layer is a double-sided tape. The improved structure of the film type key sheet body according to claim 1, wherein the circuit board comprises a spring fixing layer, a lower circuit layer and an upper circuit layer, and the elastic piece fixing layer has at least one elastic hole for receiving the metal elastic piece. The bottom layer of the lower circuit layer is coupled to the bottom surface of the elastic layer of the elastic sheet, and the bottom surface is coupled to the top surface of the substrate. The lower circuit layer is provided with a line passing through the elastic hole, and the upper circuit layer is coupled to the elastic layer of the elastic layer. The top surface of the top surface is provided with a line connecting the metal elastic piece, and the metal elastic piece has a circular arc shape and can be elastically deformed by pressing The center is in contact with the line in the lower circuit layer, causing the lines of the upper and lower circuit layers to be turned on. The improved structure of the film type key sheet body according to claim 3, wherein the circuit board further comprises an electrostatic mesh layer bonded to a top surface of the upper circuit layer. The improved structure of the film type key sheet body according to claim 1, wherein the dielectric layer is transparent. The improved structure of the film type key sheet body according to claim 1, wherein the dielectric layer is translucent.