TWI296916B - Electrostatic discharge protection structure - Google Patents

Description

1296916

Sanda number: TW2262PA Nine, invention description: [Technical field of invention] This work is related to a kind of electrician that protects against electrostatic discharge and produces a function of destruction. In particular, it is related to a kind of protection and management of electrostatic discharge. Functional electronic device. & [Prior Art] Electro-discharge phenomenon (Eleetr. stie diseharge) is the change of the potential of the potential in the feed. This phenomenon often causes damage to the electronic device. Figure 1A of '',,, 1A'' shows a three-dimensional diagram of the mobile phone. The electronic lawsuit such as the mobile phone (10) includes the body 1G1 and the case 1 () 3. The body (8) package = :::: many electronic components such as electricity Crystals, resistors, capacitors, etc. When the factory is equipped with electronic clothing, the tolerance gap is reserved for ribs. However, because of the shape of the b, it also becomes the path of the static side charge 105 103 ^ 10: = Cheng, electric discharge „ static charge flow people's population. Please refer to (4), the first section of the 'Day:" sub-device electrostatic discharge profile. The static charge permeation gap 102 flows into the casing 1〇3β from the machine 103 to discharge. When the wire wheel has a higher potential or a lower potential, it will flow through the mobile phone or discharge the electronic component 119. When the static charge and the electrons are too large, the internal frequency of the mobile phone 100 is easily caused to be 70 pieces. Damage. 14 The method of solving the electrostatic discharge phenomenon in the system of the external appearance of the system is to make the seamless 糸, the external enemy or the conductive surface of the rain conduction area m is electric concealing or conduction and grounding... The electronic product table is limited, and the reserved tolerance gap of the button edge in the above figure is shown; 1296916 Sanda number: TW2262PA can not achieve static protection. There are ^ supervised this -jL·· electric protection measures. It is necessary to propose a kind of gap between the outer body of the casing and the body. [Inventive content] The purpose of the anti-cane junction is to provide an electrostatic discharge of the electronic device:: = Directing the electrostatic charge so that the electrostatic charge does not make to the components in the electronic device. 7 The purpose of the present invention is to provide an electrostatic management structure comprising a .ii-=rr-electrostatic via and at least a ground. The second casing is combined with the joint surface ^^, and the middle and the redundant body are connected with the casing. The static material is inspected between the non-contact surface and the joint == r and the contact surface, wherein the non-contact surface end of the electrostatic conduction hole; L = electrical distance, and the conductive distance is less than the creeping distance. And: mouth:: (10) the position of the hole. Wherein the electrostatic device is surrounded by a plurality of electrostatic charges and discharged along the static hole to the ground. Structural Description Is re-proposed - protection of electrostatic discharge of electronic devices - the first surface, the second housing has a = ground. The first housing has a surface and a surface between the first surface and the second surface of the housing, and has at least one electrostatic conduction hole between the first surface and the second surface, and is static: The length is less than the length of the face distance, and the ground end corresponds to the position of the electrostatic guide hole. The above-mentioned objects, features, and advantages of the present invention will be apparent from the following description of the appended claims.

• Ξ达号: TW2262PA A protective structure for electrostatic discharge of electronic devices, including the first case: = and; The first housing has a first surface, and the second housing has a first surface, and the joint τ along the first surface and the second surface is characterized in that: the first housing and the second housing have a second to the second \ The length of the conducting hole is less than the length of the creeping distance, wherein when the device is installed = 2 times ^ static charge, the static charge is discharged along the electrostatic conducting hole to the ground. The first embodiment ~ ° electronic devices such as mobile phones, personal digital assistants, and housings of different parts of the notebook type are connected to the housing, and there is a connection between the battery receiving slot of the notebook computer and the battery. A joint surface, the joint surface of each button and the casing of the mobile power. Many situations in which electrostatic discharges are destroyed are derived from the joint. In the following, it will be explained how, in any electronic device, the electronic device is protected by the electrostatic discharge protection structure on the surface. Referring to Figure 2, there is shown a cross-sectional view of an electronic device joined between any two housings in accordance with a first embodiment of the present invention. The ESD protection and management structure includes a first housing 201, a second housing 2〇3, and a grounding terminal 2〇7. The first shell = 201 and the second shell 203 may be of the same material, for example, both are plastic. Therefore, for convenience of description, in this embodiment, the first housing 2〇1 and the second housing 2 have the same conductivity, and the grounding end 207 is located on the circuit board 2〇5 of the electronic device. A plurality of electronic components such as an integrated circuit (ic), a transistor, a capacitor, a resistor, a diode, and the like are disposed on the circuit board 205 to perform functions such as control or calculation. There is a first surface 2〇9 on the first housing 2〇1 and a second surface 211 on the second housing 2〇3. The second housing 2〇3 is used to align the first housing 2〇1. For the user, the contact surface 2〇4 (outside the casing) of the second casing 203 is a surface that can be touched. The non-contact surface 2〇8 (inside the housing) of the first housing 203 is a surface that the user cannot touch. The surface between the contact surface 204 and the non-contact surface 2〇8 is a joint 1296916

... Sanda number: TW2262PA face, this joint surface is the surface that the first surface 209 and the second surface 211 contact. On the other hand, between the joint surfaces between the first surface 209 and the second surface 211, there is a creeping distance L which is the distance between the contact surface 2〇4 and the non-contact surface 208 along the joint surface. In the present embodiment, the 'edge distance _ [the length of the line is l=L1+L2+L3, and L1_L3 is the contact distance of the different sections between the first table and the second surface 2ι1, respectively, where L1 is the contact surface 2〇4 The vertical distance to the turning point 2i7a of the second casing 2〇3, L3 is the vertical distance from the non-contact surface 2〇8 to the corner of the turning point, and L2 is the horizontal distance from the turning point 217a to the other turning point . In the present embodiment, the electrostatic discharge protection structure is provided with a static material-hole 2U between the non-contact surface 2〇8 and the joint-surface, for example, on the second surface 211 of the second casing. The length of the electrostatic conduction hole 213 is L3, so the total length of the creeping distance l is greater than L1+L3'. The towel l1+L3 is the conductive distance of the embodiment, that is, the conductive distance is smaller than the creeping distance. When the carrier of the electronic device 2 has an electrostatic negative charge, the negative charge easily flows in the gap between the first surface and the second surface 2ι. The first surface 2〇9 and the second surface 21 having the same material have the same conductivity. Therefore, for a negative charge, it will naturally flow in the direction of the most = diameter. Therefore, when the negative electric charge slides into the turning portion 217a reaching the first surface 209 and the first surface 211, the path of the electrostatic conducting hole is selected to flow. Since the position of the ground terminal 2〇7 can be arranged in advance, the negative_ will be directly discharged to the ground terminal 207 for electrical neutralization. In this way, the electronic component 219 under the surface 209 and the second surface 211 is not damaged by electrostatic discharge. The second embodiment has a plurality of mouths, and the third figure is shown in Fig. 3, which shows the interface between the different housings of the electronic device of the second embodiment. In the second embodiment, the first housing is torn and the second housing 303 is made of a plastic material. However, the hole of the electrostatic conduction hole is different from the previous embodiment. 1296916

Sanda number: TW2262PA * ·. Wall 314 can be plated with metal, such as copper, silver or gold. Since the wire factor of the metal material is higher than the conductivity of the material such as plastic, the method can accelerate the electric charge of the electrostatic discharge into the grounding end of the circuit board 3〇5, and to better protect the electronic component 319 from electrostatic discharge. Destructive function. It should be noted that the material wire coefficient of the metal in this embodiment is higher than that of the material such as plastic. The conductivity of the material is only one embodiment. However, the casing is made of a carbon fiber material, and the spirit of the present embodiment lies in the electrostatic conduction hole 3 13 . The aperture wall 314 can have a conductivity that is higher than the conductivity of the housing. The third embodiment is exemplified by the notebook computer in the private clothing setting, please refer to FIG. 4, and FIG. 4 is a schematic diagram of the bottom surface of the notebook computer. The hard disk drive 4〇8 of the notebook computer 400 is assembled into the recess 424 of the casing. In the junction of the recess 424 and the hard disk drive 4〇8, there is an electrostatic charge inflow in the valley. ♦ On the side wall of the recess # 424, a plurality of electric holes are formed: when the external electric charge is accumulated, these electrostatic conduction holes * 丄 3 = become the path through which the electric charge flows. The difference is that these electrostatic vias 4i3 do not need to be connected to the ground of the board, but can be connected to the ground or the ground 407 of the chassis or elsewhere. It is also possible to prevent the electrostatic discharge from causing damage to the electronic components. The fourth embodiment is as shown in Fig. 5A, and Fig. 5A is a cross-sectional view of the mobile phone according to the fourth embodiment. When there is two joint faces between the first housing 〇1 (the case) and the second one ο) (the 7-key), in the embodiment, the second housing 503 can be opened correspondingly. Electrostatic guide holes 513a and 513b. In order to conduct electrostatic charges to the ground terminals 507a and 5〇7b. For another method, please refer to FIG. 5B. FIG. 5B is a cross-sectional view showing the electrostatic conduction hole directly formed on the first casing. The first housing 501 can be provided with an electrostatic conduction hole 513c adjacent to the first surface 5〇9, and a grounding end 1296916 is disposed under the electrostatic conduction hole.

The Sanda number: TW2262PA 5〇7, accumulated in the first conductive hole 513e by this method, and the charge on the body 5〇1 can directly enter the static state, and the +- is not incorporated into the first surface 509. The above-mentioned anti-speaking " insulators such as plastics, f彳μ # +. Both the body and the second shell are ^ „ ν 砰 砰 砰 砰 ( 最 ( ( ( ( , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , It does not damage other electronic components. Therefore, it is not necessary for the manufacturer to change the materials of the electrical device, such as metal, only need to pass through:: replacement - sub-i

Anti-static discharge causes the purpose of damage. In summary, although the present invention has been described as being - 严平乂1土贝方, the lack of hair is not intended to limit the invention, any ignorance, ^ this artist, without departing from the present In the spirit and scope of the invention, the scope of the invention is defined by the scope of the appended claims. \

10 1296916

Sanda number: TW2262PA [Simple description of the diagram] Figure 1A shows a perspective view of the mobile phone. FIG. 1B is a cross-sectional view showing an electrostatic discharge of an electronic device. Figure 2 is a cross-sectional view showing the electronic device joined between any two housings in accordance with a first embodiment of the present invention. Fig. 3 is a cross-sectional view showing the joint between different housings of the electronic device of the second embodiment. Figure 4 shows a schematic diagram of the underside of the notebook computer. 5A is a cross-sectional view of the mobile phone button and the casing of the fourth embodiment. _ Figure 5B is a cross-sectional view showing the electrostatic conduction hole directly formed on the first casing. [Description of main component symbols] 100, 500: mobile phone 101: body 102: gap 103: casing 105: button p 200, 300: electronic device 201, 301, 501: first casing 203, 303, 503: second Housing 204: contact faces 205, 305, 505: circuit boards 207, 307, 407, 507, 507a, 507b: ground terminal 208: non-contact faces 209, 509: first surface 211: second surface 11 1296916

Sanda number: TW2262PA 213, 413, 513, 513a, 513b, 513c: electrostatic conduction hole 217a, 217b: turning point 314: hole wall 319: electronic component 400 · · notebook computer 408 : hard disk drive 424 · · groove

12

Claims (1)

-1296916 三达号: TW2262PA X. Patent application scope: 1. An electrostatic management structure, comprising: a first housing; the first; > further, having a contact surface and a _ non-contact surface, a complex and the second The shell meets the person. /, the first shell receives the evil. Where there is a joint surface and a distance along the contact surface to the non-contact surface; at least one electrostatic conduction hole on the contact surface, between the non-contact surface and the contact surface and the contact surface, wherein the electrostatic conduction hole The _= or the non-contact surface end has a conductive distance, and the conductive 蜀=the and the 'β~face distance; at least one ground end corresponds to the position of the electrostatic conduction hole. 2. The electrostatic via as described in item i of the patent application is directly connected to the ground. In the case of the circuit, the electrostatic management structure of the first embodiment of the patent scope is placed on the circuit board. ^ The electrostatic management structure of claim i, wherein the body and the second casing have the same material. 5. The electrostatic management structure of claim 4, wherein the housing and the second housing are made of plastic. ~, 6· Shikou applied for the electrostatic management structure described in the first item of the patent scope, wherein the t-layer guide hole is coated with metal in the hole wall of the electrostatic conduction hole. The invention relates to an electrostatic management structure according to the first item of the patent scope, wherein the clothing system is provided by a mobile phone, a number of assistants and a computer 1 (four) 8: an electronic device electrostatic discharge protection structure, which includes - a second housing and a grounding end, the first housing having a first surface, wherein ti is first, wherein the i 13 1296916 is up to number. TW2262PA, the second housing has a second surface ^... The "face" and the surface of the second surface are connected to the second surface. The distance between the first and second housings is smaller than the length of the small conductive hole between the first housing and the second housing. a long sound hole along the surface distance, and the position of the static static conductive hole. The length 'the ground end corresponds to the static electricity therein, 9 the protective structure guide hole system according to item 8 of the patent application scope is along the first The surface of the second surface or the second surface is opened. The electrostatic structure is as disclosed in claim 8 of the invention. The via hole is adjacent to the first surface or the second surface. U The protection layer of the invention as described in claim 8 is directly connected to the grounding end. The grounding 12 is provided in one of the electronic devices as described in claim 8 of the patent scope. The protective structure housing and the second housing according to the eighth aspect of the present invention have the same material. 丨丨4 · The anti-speaking, as described in claim 13 of the patent application scope,纟^—The material of the casing and the second casing is plastic. /, π海第,... 15· The protective structure described in the above-mentioned patent (4), the guide hole is coated with metal in the electrostatic conduction hole. Within the wall of the hole. , " 16 · The protection structure described in item 8 of the patent scope, the device is selected from a mobile phone, a number of assistants and - (10) 14