TWI378484B - Flat keyboard structure - Google Patents

Description

1378484 . ·

TW5108PA

The invention relates to a flat button structure, and in particular to an elastic material layer having grooves or bumps in a region between adjacent two buttons. Flat button structure. [Prior Art] The basic structure of a mobile phone button today usually includes an appearance button, a rubber film, and a metal dome layer. If a plurality of appearance buttons are presented by a flat plastic sheet, that is, a graphic for printing each button on a flat plastic, that is, a so-called flat button, and each of the button patterns corresponds to a metal dome of the metal shrapnel layer. If the button is placed too close to the button, during the process of pressing a button, the other adjacent button will often be pulled, resulting in a bad pressing feel or a problem of being linked. [Summary of the Invention]

The invention relates to a flat button structure, wherein the elastic material layer has a groove or a protrusion in a region between two adjacent buttons, which can effectively avoid the elastic material layer under the adjacent one of the buttons when one of the buttons is pressed. Touch the corresponding metal dome to provide a better pressing feel. According to a first aspect of the present invention, a planar button structure is provided for use in an electronic device. The electronic device includes a circuit board. The planar key structure includes a planar key sheet, an elastic material layer, and a metal dome layer. The plane key board includes a first button and a second button that are adjacently arranged. 5 1378484

The TW5108PA elastic material layer is connected to the bottom of the flat key sheet, and the elastic material layer is connected to the upper surface of the flat key sheet. The first surface has a first groove between the first button and the second button for blocking the first button and the second button. The press is used in conjunction with the action. The metal shrapnel layer is connected under the elastic material layer and disposed on the circuit board, and the metal shrapnel layer has first metal shrapnel and second metal shrapnel corresponding to the first button and the second button, respectively. According to a second aspect of the present invention, a planar button structure is provided for use in an electronic device. The electronic device includes a circuit board. The planar button structure includes a planar button board, an elastic material layer, a metal dome layer, and a First bump. The plane keypad includes a first button and a second button that are adjacently disposed. The elastic material layer is connected below the flat key sheet. The metal shrapnel layer is connected under the elastic material layer and disposed on the circuit board, and the metal shrapnel layer has a first metal shrapnel corresponding to the first button and the second button and a second metal shrapnel. The first bump is connected to the lower surface of the corresponding metal foil layer of the elastic material layer and located between the first metal dome and the second metal dome to block the pressing action of the first button and the second button. In order to make the above-mentioned contents of the present invention more comprehensible, the following two preferred embodiments will be described in detail below with reference to the accompanying drawings: [Embodiment] In the first embodiment, please refer to FIG. 1A and FIG. 1B, which is a top view of a planar button structure according to a first embodiment of the present invention, and a 1378484

TW5 丨 08PA 1A The cross-sectional view of the planar button structure along AA, section line. The flat button structure 100 is used in an "electronic device (not shown), such as a mobile phone, and the electronic device includes a circuit board 140, such as a flexible printed circuit (FPC). Flat button structure 1 The 按键 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面 平面111 and the second button 112, and the adjacently arranged third button U3 and fourth button U4'® are as shown in FIG. 1A. It is noted that the distance dl between the first button 丨丨丨 and the second button 112 is as well The distance d2 between the third button 113 and the fourth button η* is smaller than the distance 第一 between the first button ln and the third button 113 and the distance D2 between the first button 112 and the fourth button 114.

The elastic material layer 120 is, for example, a rubber knee material connected to the lower surface of the flat key sheet, and the upper surface S1 of the conductive material layer 12 () connected to the flat key sheet ι has the first button (1) and the second button 112. The first groove - 12 is for blocking the first button 1 " and the pressing of the second button ι2, and the second groove 122' between the third button 113 and the fourth button U4 for blocking the first Three presses 114 to press the action. /, the fourth member of the metal shrapnel layer U0 is connected to the elastic material placed on the circuit board 140, and the metal below the 'Ping Moon layer 13 〇 罝 right right 丨 丨 廄 - - button ill and the second button U2 / U Corresponding to the winter report H no , the music metal dome 131 and the second metal dome 132 , and the third metal 133 and the fourth metal dome 134 corresponding to the third 丨. Button 7 1378484

TW5108PA In addition, the flat keypad 110 further includes a multi-directional key 1丨5' for moving the cursor of the mobile phone screen in different directions. The multi-directional key 115 is located between the first button 111, the second button 112, the third button 113, and the fourth button 114. The elastic material layer 120 further has an opening 123 ′ connected to the first groove 121 and the second groove 122. The 'and multi-directional keys 115 are disposed on the opening 123' as shown in FIG. 1A and FIG. 1C. As shown in FIG. 1B, pressing the first button 111 or the second button 131 causes the elastic material layer 120 to be deformed, and the first gold-poly blade or the second metal dome 132 corresponding to the pressure is electrically connected to the circuit board 140. The special feature of the embodiment is that when the first button 111 (or the second button 112) is pressed to deform the lower elastic layer 120, the first metal dome 131 corresponding to the pressure is pressed (the first/golden 191 segment) When the elastic piece 132) is electrically connected to the circuit board 140, since the first groove is connected, the elastic layer 120 under the second button 112 (or the first button 111) does not touch the corresponding second metal dome 132 (or / Gold plate 131) is electrically connected to the circuit board 140. Similarly, when the third button 113 (or the fourth button 114) is pressed to deform the lower elastic material layer 120 and the corresponding third metal element f 133 (or the fourth metal dome 134) is electrically connected to the circuit board 14 'Because of the barrier connection action of the first recess 122, the elastic material layer 12 below the fourth button ι 4 (or the third button 113) does not touch the corresponding fourth metal 134 (or the third metal dome 133) ) is electrically connected to the circuit board 140. However, as shown in FIG. 1A and FIG. 1C: the distance D1 between the second button U1 and the second button 113 and the distance D2 between the second button 112 and the fourth button 1H are larger than the first button U1 and the second button. 112 distance 1378484.

JW5108PA dl and the distance d2 between the third button 113 and the fourth button 114, and the elastic material layer 120 between the first button 111 and the third button 113 and between the second button 112 and the fourth button 114 is opened 123 When the first button 111 or the second button 112 is pressed to press the corresponding metal dome 131 or 132 to be electrically connected to the circuit board 140, the elastic material layer 120 under the third button 113 or the fourth button 114 is The corresponding metal dome 133 or 134 is not pressed and connected to the circuit board 140 by interlocking. Therefore, the planar button structure 100 of the present embodiment is effective for the first groove 121 of the adjacent buttons 111 and 112 and the second groove 122 of the adjacent buttons 113 and 114 by the elastic material layer 120. When the one button (111-114) is pressed, the metal dome under the adjacent button is pressed and the circuit board is turned on by the connecting action, and the button is connected due to the blocking action of the first groove 121 and the second groove 122, and the button can be added. Pressing the feel. As described above, although the planar button structure 100 has four buttons 111-114 and a multi-directional button 115 as an example, the present invention is not limited thereto, and the planar button structure of the present invention may be The two buttons having at least % adjacent configurations are not included in the technical scope of the present invention as long as the elastic material layer has a groove design in the region between the two adjacent buttons to achieve the purpose of blocking the button press. In addition, as shown in FIG. 1D, the planar button structure 100 of the present invention may also be a first button m, a second button 112, a third button 113, and a fourth button 114 having adjacent configurations, and the first button 111 and The distance D1' of the third button 113 and the distance D2' of the second button 112 and the fourth button 114 are larger than the distance d1' between the first button 111 and the second button 112, and the ninth 1378484

TW5108PA The distance d2' between the three buttons 113 and the fourth button 114. The elastic material layer 12 is located between the buttons 111 and 112 and between the buttons 113 and 114, respectively, having grooves 121 and 122, and the groove 121 is connected to the groove 122 to form a single groove. Due to the blocking action of the grooves 丨21 and 122, the pressing button 111 or 113 does not cause the metal elastic piece corresponding to the elastic material layer 120 under the interlocking button 112 or 114 to be electrically connected to the circuit board (not shown). The distance between the buttons 111 and 113 is 〇1, and the distance between the buttons U2 and H4 is longer. Therefore, pressing the button 111 or 112 does not cause the elastic material layer 120 under the button 113 or 114 to touch the corresponding metal dome and circuit. The second embodiment and the second embodiment are shown in FIG. 2A and FIG. 2B respectively, which illustrate a top view of a planar button structure and a planar button structure in FIG. 2A according to a second embodiment of the present invention. Along the BB, a section of the section line. The flat button structure 200 is used in an electronic device (not shown), such as a cell phone, and the electronic device includes a circuit board 250, such as a flexible circuit board. The planar button structure 200 includes a planar key sheet 210, an elastic material layer 220, a metal dome layer 230, and first and second bumps 241 and 242. The flat key sheet 210 is, for example, a flat plastic sheet and prints a plurality of key patterns on the flat plastic, and includes a first button 211 and a second button 212 disposed adjacent to each other, and a third button 213 and a fourth button 214 disposed adjacent to each other. And a multi-directional key 215 located between the buttons 211-214, as shown in Figure 2A, 1378484 • TW5108PA • ·. It should be noted that the distance dl of the first button 211 盥 拉 〇 一 按键 button 212 and the distance d2 between the third button 213 and the fourth button 214 are both smaller than the distance D1 between the button 211 and the third button 213 and the first The distance D2 between the two buttons ^ and the fourth button 214. The elastic material layer 220 is made of, for example, a rubber material and is attached to the lower surface of the plane key plate 210. The elastic material layer 220 has an opening 221, and the multi-key 215 is disposed on the opening 221. The metal shrapnel layer 230 is connected to the elastic material layer 22 under the circuit board 250, and the metal shrapnel layer 23 has the first metal springs 23ι and the second of the first button 211 and the second button 212 respectively. The metal dome 232 and the third metal dome 233 and the fourth metal dome 234 corresponding to the third button 213 and the fourth button respectively. The first bumps 24 are, for example, made of a rubber material, and are connected to the lower surface S2 of the elastic shrapnel 220 corresponding to the metal shrapnel layer 23 and located between the first elastic piece 231 and the second metal elastic piece 232 for blocking the first button 211 and The pressing of the second button 212 is used in conjunction with the action. In addition, the second bump 242 is made of a rubber material, and is connected to the elastic material layer 22 corresponding to the lower surface s2 of the metal elastic layer 23 and located between the third metal elastic piece 233 and the fourth metal elastic piece 234 for blocking The pressing of the third button 213 and the fourth button 214 is used in conjunction. As shown in FIG. 2B, pressing the first button 211 or the second button 212 causes the elastic material layer 220 to be deformed to be in contact with the first metal dome 231 or the second metal dome 232 and the circuit board 25A. This embodiment is characterized in that when the first button 211 (or the second button 212) is pressed to make the lower elasticity 11 1378484

When the TW5I08PA material layer 220 is deformed and the first metal dome 231 (or the second metal dome 232) corresponding to the pressure is electrically connected to the circuit board 250, the first bump 241 can just bear against the metal shrapnel layer 230 below to make the second button 212. (Or the first button 211) The lower elastic material layer 220 does not touch the corresponding second metal dome 232 (or the first metal dome 231) to be electrically connected to the circuit board 250. Similarly, when the third button 213 (or the fourth button 214) is pressed to deform the lower elastic material layer 220 and the corresponding third metal dome 233 (or the fourth metal dome 234) is electrically connected to the circuit board 250, The two bumps 242 just can withstand the metal shrapnel layer 230 below, so that the elastic material layer 220 under the fourth button 214 (or the third button 213) does not touch the corresponding fourth metal shrapnel 234 (or the third metal shrapnel) 233) is electrically connected to the circuit board 250. However, as shown in FIG. 2A, the distance D1 between the first button 211 and the third button 213 and the distance D2 between the second button 212 and the fourth button 214 are larger than the distance dl between the first button 211 and the second button 212, and The distance d2 between the third button 213 and the fourth button 214, and the elastic material layer 220 between the first button 211 and the third button 213 and between the second button 212 and the fourth button 214 are partially broken by the opening 221 Therefore, although there is no bump design on the elastic material layer 220 between the buttons 211 and 213 and between the buttons 212 and 214, when the first button 211 or the second button 212 is pressed to touch the corresponding metal dome 231 or 232 When the circuit board 250 is turned on, the elastic material layer 220 under the third button 213 or the fourth button 214 does not contact the corresponding metal dome 233 or 234 to be electrically connected to the circuit board 250 by interlocking. Therefore, the planar button structure 200 of the present embodiment is powered by the above-mentioned bomb 12 1378484 > »

The TW5108PA material layer 220 is located at the first bump 221 of the adjacent buttons 211 and 212 and the second bump 222 of the adjacent buttons 213 and 214 can effectively avoid touching one of the buttons (211-214). The metal dome under the adjacent button is electrically connected to the circuit board, and since the first bump 221 and the second bump 222 are connected to each other, the pressing feeling of the button can be increased. As described above, the present embodiment is described by way of example in which the planar button structure 2 has four buttons 211-214 and a multi-directional button 215. However, the present invention is not limited thereto. The planar key structure of the present invention may have at least ==' two: the key is an elastic material layer and a metal shrapnel layer: the purpose of the button pressing operation is not deviated from the technical scope of the present invention. The flat-type button disclosed in the above two embodiments of the present month has a relatively simple groove or protrusion on the elastic material layer between the buttons, and can effectively structure the structure and the elastic material of the groove or the bump is pressed therein. - Pressing and interlocking the adjacent metal to the bottom of the dust and the corresponding metal W and the circuit board are turned on, causing the "four" feel of the button. The invention has been described above in terms of preferred embodiments, which are not intended to limit the invention. ..., the knowledgeer, has the usual changes and refinements in the field of continuing technology. Within the spirit and scope, the scope defined by the various benefits is subject to change. The scope of the warranty is as follows: [Simplified description of the drawings] Figure 1A is a flat type according to the first embodiment of the present invention. 13 1378484

TW5108PA key structure upper view. Fig. 1B is a cross-sectional view of the planar button structure taken along line AA' in Fig. 1A. Fig. 1C is a perspective structural view of the elastic material layer in Fig. 1A. Fig. 1D is a top view of a planar key structure having adjacent four keys in accordance with a first embodiment of the present invention. Fig. 2A is a top view of a planar key structure in accordance with a second embodiment of the present invention. Fig. 2B is a cross-sectional view of the planar button structure taken along line BB' in Fig. 2A. [Main component symbol description] 100, 200: planar key structure 110, 210: flat key plate 111-114, 211-214: keys 115, 215: multidirectional keys 120, 220: elastic material layer 121-122: groove 123, 221: openings 130, 230: metal shrapnel layers 131-134, 231-234: metal domes 241-242: bumps 140, 250: circuit board 51: upper surface 52: lower surface

Claims (1)

April 19, 101, Shuttle is replacing page 1378484. » 2012/4/19_1S'·Recovery & Amendment 10. Patent scope: 1. A flat-type button structure for use in an electronic device, the electronic device includes a flat panel structure, comprising: a planar keypad, comprising a first button and a second button disposed adjacent to each other; an elastic material layer connected to the lower surface of the planar button panel, the elastic material layer connecting the One of the upper surface of the planar keypad has a first recess between the first button and the second button for blocking the first button and the second button to press the button; and a metal dome a metal dome layer is disposed under the elastic material layer and disposed on the circuit board, the metal dome layer having a first metal dome and a second metal dome corresponding to the first button and the second button respectively The planar keypad further includes a third button and a fourth button adjacent to the first button, the third button is adjacent to the first button, and the fourth button and the second button The distance between the first button and the second button and the distance between the third button and the fourth button are smaller than the distance between the first button and the third button, and the second button and the second button a distance between the button, and the upper surface of the elastic material layer connected to the planar button plate further has a second groove between the third button and the fourth button; wherein the planar button plate further comprises a a multi-directional key, located between the first button, the second button, the third button, and the fourth button, the 4 elastic material layer has an opening connected to the first groove and the second recess 15 097145993 1013146428-0 1378484 . After April 19, 2011, the front page 2012/4/19_1 Newsun complex & correction slot between the multi-directional key system is placed on the opening. 2. The planar button structure of claim i, wherein when the first button is pressed to deform the lower layer of the elastic material and the first metal dome corresponding to the pressure is electrically connected to the circuit board, The barrier of the first recess is such that the elastic material layer under the second button does not touch the corresponding second metal dome to be electrically connected to the circuit board. 3. The planar button structure of claim 1, wherein the first groove and the second groove are connected in a single groove. 4. The planar key structure of claim 1, wherein the elastic material layer is a rubber material. 5. The planar button structure of claim 1, wherein the electronic device is a mobile phone, and the circuit board is a flexible printed circuit (FPC). 6. A planar button structure for use in an electronic device, the electronic device comprising a circuit board, the planar button structure comprising: a planar keypad, including a first button and a second button adjacent to each other An elastic material layer is connected under the planar key sheet; a metal shrapnel layer is connected under the elastic material layer and disposed on the circuit board, and the metal shrapnel layer has a corresponding first button and the first a first metal bullet and a second metal dome; and a first bump connected to the lower surface of the elastic material layer corresponding to one of the metal dome layers and located on the first metal dome and the second metal 097145993 1013146428-0 1378484 I * > April 19, 2011 Amendment Replacement Page 2012/4/19_Shanghai Shenfu & Correction shrapnel to block the first button and one of the second button to press The planar keypad further includes a third button and a fourth button adjacent to the first button, the third button is adjacent to the first button, and the fourth button and the second button The distance between the first button and the second button and the distance between the third button and the fourth button are smaller than the distance between the first button and the third button, and the second button and the E3 button a third metal dome and a fourth metal dome corresponding to the third button and the fourth button respectively, and the planar button structure further includes a second bump connected to the circuit board The elastic material layer corresponds to the lower surface of the metal elastic layer and is located between the third metal elastic piece and the fourth metal elastic piece; wherein the planar key plate further comprises a multi-directional key located at the first key and the second key In the middle of the third button and the fourth button, the elastic material layer further has an opening, and the multi-directional key system is disposed on the opening. 7. The planar button structure of claim 6, wherein when the first button is pressed to deform the lower elastic material layer and the first metal dome corresponding to the pressure is electrically connected to the circuit board, The first bump just can withstand the metal shrapnel layer below, so that the elastic material layer under the second button does not touch the corresponding second metal shrapnel to be electrically connected to the circuit board. . 8. The planar key structure of claim 6, wherein the elastic material layer and the first bump are made of rubber. 097145993 1013146428-0 1378484 The correction of the 眷 眷 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 平面 平面 平面 平面 平面 平面 平面 平面A mobile phone, and the circuit board is a flexible circuit board. 097145993 1013146428-0 18