KR20110026031A - Connector for low voltage differential signaling - Google Patents

Connector for low voltage differential signaling Download PDF

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Publication number
KR20110026031A
KR20110026031A KR1020090081912A KR20090081912A KR20110026031A KR 20110026031 A KR20110026031 A KR 20110026031A KR 1020090081912 A KR1020090081912 A KR 1020090081912A KR 20090081912 A KR20090081912 A KR 20090081912A KR 20110026031 A KR20110026031 A KR 20110026031A
Authority
KR
South Korea
Prior art keywords
actuator
housing
flexible circuit
circuit cable
connector
Prior art date
Application number
KR1020090081912A
Other languages
Korean (ko)
Inventor
김영래
Original Assignee
한국몰렉스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국몰렉스 주식회사 filed Critical 한국몰렉스 주식회사
Priority to KR1020090081912A priority Critical patent/KR20110026031A/en
Publication of KR20110026031A publication Critical patent/KR20110026031A/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/771—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/88—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting manually by rotating or pivoting connector housing parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The connector 100 for high-speed LCD signal transmission of the present invention is formed with a seating slot 111 is inserted into the front end portion of the flexible circuit cable (FPC / FCC) (1), the terminal insertion portion at the rear end A housing 110 in which the 113 is formed; An actuator (120) fitted to both ends of the shaft (121) in the housing (110) and selectively fixing the flexible circuit cable (1) while rotating with respect to the shaft (121); A plurality of ground pieces 131 coupled to the front of the housing 110 and elastically contacting the shield portion 1a of the flexible circuit cable 1 are formed at the front lower portion thereof, and the actuator 120 is disposed at the upper upper portion thereof. A metal shell 130 in which a plurality of elastic contact pieces 133 are elastically contacted with the shaft 121; A plurality of terminals 140 inserted into the terminal insertion part 113 of the housing 110 and connected to the flexible circuit cable 1; And a fitting nail 150 for supporting the actuator 120 in an elevated state.

LVDS, Metal Shell, Elastic Contact Piece, Ground Piece

Description

Connector for high speed LCD signal transmission {Connector for Low Voltage Differential Signaling}

The present invention relates to a connector for high-speed LV signal transmission, and more particularly, to a connector for high-speed LCD signal transmission that improves the shape of the metal shell to realize smooth rotation and rigid fixing of the actuator and enables high-speed transmission. It is about.

In general, Low Voltage Differential Signals (LVDS) refers to a general interface standard for high-speed data transmission, and more specifically, a transmission method for transmitting digital information to a flat panel display at high speed through copper wire.

LVDS is used for economical and efficient transmission because a small number of wires can be used between the panels of the motherboard, and the cable for LVDS connects the LCD panel and the main board. To connect these cables to the circuit board, a connector is required. These wire-to-board connectors are called LVDS connectors. A typical LVDS connector has terminals arranged in both longitudinal directions in a housing extending to both sides, and the housing is wrapped through a shell and connected to a circuit board. In particular, the shell (Shell) is coupled to the housing to block foreign substances and to close the electromagnetic wave and at the same time mechanical connection with the circuit board is made.

Conventionally, flexible cable connectors for connecting flexible circuit cables (FPC / FFC) are shown in FIGS. 1 and 2.

1 and 2, the conventional flexible cable connector is a housing 10 fixed on a printed circuit board (not shown) and formed of a synthetic resin material, and the housing 10 at the rear of the housing 10. A plurality of terminals 20 inserted into and fixed into the housing 10 and an actuator 30 fixing the FPC / FFC (not shown) inserted into the front of the housing 10 to the housing 10.

The front end of the housing 10 is formed with a seating slot 11 is fixed FPC / FFC is fixed, the rear end of the housing 10 is formed with a terminal insertion portion 12 is inserted into the terminal 20 is fixed .

Fixing arms 13 are formed at both sides of the housing 10, and fixing grooves 13a are formed at both ends of the actuator 30 inside the fixing arms 13.

In addition, fixing protrusions 31 rotatably fixed to the fixing grooves 13a formed inside the fixing arm 13 protrude from both rear end portions of the actuator 30, and actuators both sides of the front end portions of the actuator 30. A locking protrusion 32 is formed to protrude from both sides of the front portion of the housing 10 to lock the actuator 30 so as not to rotate when the 30 is positioned in the closed position.

Therefore, when the rear end is inserted between the fixing arms 13 in the state in which the actuator 30 is upright (open position), the fixing protrusion 31 of the actuator 30 is fixed to the fixing groove 13a of the housing 10. By being inserted into the actuator 30, the actuator 30 is fixed to the housing 10.

In order to connect the FPC / FFC on the assembled connector in this way, first, the actuator 30 is rotated to be in the open position, and the end of the FPC / FFC is seated on the seating slot 11 of the housing 10. By rotating the actuator 30 to the closed position, the FPC / FFC is connected to the terminal 20 in a fixed state by the actuator 30.

However, in the case of the conventional flexible cable connector configured as described above, the actuator is locked only by the locking protrusion protruding on both sides of the front end portion of the actuator in the closed position. Therefore, the fixing force of the actuator is so weak that when the FPC / FFC is connected to the terminal, if the front end of the actuator is slightly pulled up or the housing is impacted, the locking state of the actuator may be easily released. There is a possibility that the connection force between the FPC / FFC and the terminal may be weakened or released due to the weak fixing force.

The present invention is to solve the above-described problems, the effect that the bonding between the electrode and the terminal of the flexible circuit cable is enhanced by the elasticity of the upper and lower elastic contact of the metal shell when the actuator is rotated from 90 ° to 0 ° In addition, since the metal shell contacts remain in contact with the shield of the flexible circuit cable and is grounded through the ground of the metal shell, high-speed LV signals capable of transmitting high-speed LV signals by improving the electrical performance by the ground connection. The purpose is to provide a connector for transmission.

In order to achieve the above object, a connector for high-speed LVDS signal transmission according to the present invention includes a housing having a seating slot in which a front end portion of a flexible circuit cable is inserted, and a terminal insertion portion formed in a rear end; An actuator fitted to both ends of the shaft and selectively rotating the flexible circuit cable while rotating about the shaft; A metal shell coupled to the front of the housing, a plurality of ground pieces that are in elastic contact with the shield portion of the flexible circuit cable in the lower front, and a plurality of elastic contact pieces in elastic contact with the shaft of the actuator in the upper front ; A plurality of terminals inserted into the terminal insertion portion of the housing and connected to the flexible circuit cable; And a fitting nail for supporting the actuator in an elevated state.

The ground piece includes a ground part that is grounded and a contact part that is bent from the ground part by a letter “U” to be in contact with the shield part.

The elastic contact piece may be formed in two stages bent from the front portion of the metal shield.

As described above, in the present invention, after the electrical connection of the flexible circuit cable and the terminal, the metal shell acts as much as the space in which the actuator moves up and down due to the rotation and pressure contact of the actuator, the actuator rotates from 90 ° to 0 ° In this case, the bonding between the electrode and the terminal of the flexible circuit cable is enhanced not only by the elasticity of the elastic contact piece of the metal shell but also by the up and down elasticity, and the contact portion of the metal shell is in contact with the shield portion of the flexible circuit cable. Since it maintains the grounded state through the grounding part, it is possible to transmit high speed LVDS signal by improving the electrical performance by the ground connection.

Hereinafter, a high speed LVS signal transmission connector according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a connector for a signal to the LS signal according to the present invention, Figure 4 is a plan view showing a connector for the signal to the LS signal in accordance with the present invention, Figure 5 is a connector for a signal signal transmission to the LV in accordance with the present invention Figure 6 is a front view showing a connector for the signal transmission of the LV signal in accordance with the present invention, Figure 7 is a bottom view showing a connector for the signal transmission S in accordance with the present invention, Figure 8 is the present invention Fig. 9 is a cross-sectional view showing the open position of the actuator in the connector for signal transmission, and Fig. 9 is a longitudinal sectional view showing the closed position of the actuator in the connector for signal transmission according to the present invention.

1 to 7, and 8 and 9, the LCD signal transmission connector 100 according to the present invention, the end of the flexible circuit cable (FPC / FCC) (1) is inserted into the front end seat A seating slot 111 to be formed, and a housing 110 having a terminal insertion portion 113 formed at a rear end thereof; An actuator (120) fitted to both ends of the shaft (121) in the housing (110) and selectively fixing the flexible circuit cable (1) while rotating based on the shaft (121); A plurality of ground pieces 131 coupled to the front of the housing 110 and elastically contacting the shield portion 1a of the flexible circuit cable 1 are formed at the front lower portion thereof, and the actuator 120 is disposed at the upper upper portion thereof. A metal shell 130 in which a plurality of elastic contact pieces 133 are elastically contacted with the shaft 121; A plurality of terminals 140 inserted into the terminal insertion part 113 of the housing 110 and connected to the flexible circuit cable 1; And a fitting nail 150 for supporting the actuator 120 in an elevated state.

Looking at the configuration of the LCD signal transmission connector 100 according to the present invention in more detail as follows.

The housing 110 is fixed on a printed circuit board (not shown) and is formed of a synthetic resin material, and a seating slot 111 into which an end portion of a flexible circuit cable (FPC / FFC) 1 is inserted and seated at a front end thereof. The terminal insertion portion 113 is formed at the rear end thereof.

The actuator 120 is rotatably installed in the housing 110 to close the seating slot 111, and both ends of the shaft 121 of the actuator 120 are fitted into the housing 110. The actuator 120 selectively fixes the flexible circuit cable 1 while rotating based on the shaft 121.

The metal shell 130 is coupled to the front of the housing 110, a plurality of ground pieces 131 are formed in the lower portion of the front surface to be elastically in contact with the shield portion (1a) of the flexible circuit cable (1), the front A plurality of elastic contact pieces 133 that are in elastic contact with the shaft 121 of the actuator 120 is formed on the top.

Here, the ground piece 131 is a ground portion 131a which is grounded to the PCB (P) to be grounded, and a contact portion formed by bending the letter “U” from the ground portion 131a to be in contact with the shield portion 1a ( 131b).

In addition, the elastic contact piece 133 is formed in two steps bent from the front portion of the metal shield (130). Although not shown in the drawing, the elastic contact piece 133 may be bent in multiple stages. The reason for forming the elastic contact piece 133 in multiple stages in this way is the elastic contact piece. This is for the 133 to have elastic force and to elastically contact the shaft 121 of the actuator 120.

The terminal 140 is inserted into the terminal insertion portion 113 of the housing 110 and is elastically connected to the flexible circuit cable 1.

The fitting nail 150 is inserted and coupled to both sides of the housing 110 by supporting the actuator 120 in an elevated state.

Referring to the operation of the LCD signal transmission connector according to the present invention configured as described above are as follows.

When the end of the flexible circuit cable (FPC / FFC) 1 is inserted into the seating slot 111 of the housing 110, the electrode of the flexible circuit cable (FPC / FFC) 1 and the terminal 140 are connected. The connection and pressure contact state are maintained.

In addition, the ground piece 131 of the metal shell 130, more specifically, the contact part 131b is in contact with the shield part 1a of the flexible circuit cable (FPC / FFC) 1 so that the ground part ( Maintain the grounded state through 131a).

In the state where the actuator 120 stands vertically (open position) (see FIG. 8), the elastic contact piece 133 of the metal shell 130 does not press the shaft 121.

On the other hand, in the state in which the actuator 120 is rotated about the shaft 121 (closed position) (see FIG. 9), the elastic contact piece 133 elastically presses the shaft 121.

As described above, in the connector 100 for high-speed LCD signal transmission according to the present invention, after the electrical connection between the flexible circuit cable (FPC / FFC) 1 and the terminal 140, the actuator 120 is rotated and pressed. Due to the function and the structural difference between the components acting up and down, the metal shell 130 acts as much as the space in which the actuator 120 moves up and down, the actuator 120 from 90 ° to 0 ° When rotated, the bonding between the electrode of the flexible circuit cable (FPC / FFC) 1 and the terminal 140 is reinforced by the upper and lower elasticity of the elastic contact piece 133 of the metal shell 130. .

At the same time, the contact portion 131b of the ground piece 131 of the metal shell 130 is in contact with the shield portion 1a of the flexible circuit cable (FPC / FFC) 1 so that the metal shell 130 Since the grounded state is maintained through the grounding unit 131a, the high-speed LCD signal transmission is possible by improving the electrical performance by the ground connection.

On the other hand, Figures 10 to 13 is a graph showing the performance test data of the connector for high speed LCD signal transmission according to the present invention.

Figure 10 shows the insertion signal transmission loss according to the frequency, it was confirmed that the insertion signal transmission loss of the present invention (1) is smaller than the standard (2) in the frequency of approximately 500MHz or less.

11 shows the return loss according to the frequency, and it was confirmed that the present invention (1) had a smaller return loss than the standard (2) at a frequency of approximately 500 MHz or less.

12 shows Near End Cross Talk (NEXT) according to frequency, and it was confirmed that the present invention (1) significantly reduced near-end crosstalk than the standard (2).

FIG. 13 shows far end cross talk (FEXT) according to frequency, and it was confirmed that the far end crosstalk of the present invention (1) is significantly reduced than that of the standard (2).

Through the experimental data of the graph it was confirmed that the high-speed LCD signal transmission connector 100 of the present invention is suitable for the reference value of the transmission standard.

As described above, the rights of the present invention are not limited to the above-described embodiments, and are defined by the claims, and various modifications can be made within the scope of the claims by those skilled in the art. It is self evident.

1 is a perspective view showing a conventional flexible cable connector

Figure 2 is an exploded perspective view showing a conventional flexible cable connector

Figure 3 is a perspective view showing a connector for the signal transmission LVDS according to the present invention

Figure 4 is a plan view showing a connector for the signal transmission LVDS according to the present invention

Figure 5 is a front view showing a connector for a signal signal transmission according to the present invention

Figure 6 is a rear view showing the connector for the signal transmission elves according to the present invention

Figure 7 is a bottom view showing the connector for the LVDS signal transmission in accordance with the present invention

Figure 8 is a cross-sectional view showing the open position of the actuator in the connector for the signal transmission LVDS according to the present invention

Figure 9 is a longitudinal cross-sectional view showing the closed position of the actuator in the connector for the signal transmission elves according to the invention

10 is a graph showing the insertion signal transmission loss according to the frequency

11 is a graph showing the return loss with respect to frequency

12 is a graph showing near-end crosstalk with frequency.

13 is a graph showing far-end crosstalk with frequency

* Description of the main parts

1: flexible circuit cable

1a: shield part

110: housing

111: seating slot

113: terminal insertion section

120: actuator

121: shaft

130: metal shell

131: grounding

131a: ground portion

131b: contact

133: elastic contact piece

140: terminal

150: fitting nail

Claims (3)

A housing 110 having a seating slot 111 into which a terminal end of the flexible circuit cable 1 (FPC / FFC) is inserted and seated at a front end thereof, and a terminal insertion unit 113 formed at a rear end thereof; An actuator (120) fitted to both ends of the shaft (121) in the housing (110) and selectively fixing the flexible circuit cable (1) while rotating based on the shaft (121); A plurality of ground pieces 131 coupled to the front of the housing 110 and elastically contacting the shield portion 1a of the flexible circuit cable 1 are formed at the front lower portion thereof, and the actuator 120 is disposed at the upper upper portion thereof. A metal shell 130 in which a plurality of elastic contact pieces 133 are elastically contacted with the shaft 121; A plurality of terminals 140 inserted into the terminal insertion part 113 of the housing 110 and connected to the flexible circuit cable 1; And And a fitting nail (150) for supporting the actuator (120) in an elevated state. The method of claim 1, The ground piece 131 is formed of a grounding portion 131a which is grounded and a contact portion 131b which is bent from the grounding portion 131a and is in contact with the shield portion 1a. LVDS signal connector. The method according to claim 1 or 2, The elastic contact piece 133 is a double-sided signal transmission connector, characterized in that the two-stage bending formed from the front portion of the metal shield (130).
KR1020090081912A 2009-09-01 2009-09-01 Connector for low voltage differential signaling KR20110026031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090081912A KR20110026031A (en) 2009-09-01 2009-09-01 Connector for low voltage differential signaling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090081912A KR20110026031A (en) 2009-09-01 2009-09-01 Connector for low voltage differential signaling

Publications (1)

Publication Number Publication Date
KR20110026031A true KR20110026031A (en) 2011-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090081912A KR20110026031A (en) 2009-09-01 2009-09-01 Connector for low voltage differential signaling

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124548A (en) * 2014-08-13 2014-10-29 苏州伟聚电子科技有限公司 Ultra-thin FPC (flexible printed circuit board) and LVDS (low voltage differential signal) electric connector easy to mount
CN109643861A (en) * 2016-08-30 2019-04-16 莫列斯有限公司 FFC/FPC connector for high speed transmission of signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124548A (en) * 2014-08-13 2014-10-29 苏州伟聚电子科技有限公司 Ultra-thin FPC (flexible printed circuit board) and LVDS (low voltage differential signal) electric connector easy to mount
CN109643861A (en) * 2016-08-30 2019-04-16 莫列斯有限公司 FFC/FPC connector for high speed transmission of signals
CN109643861B (en) * 2016-08-30 2020-09-04 莫列斯有限公司 FFC/FPC connector for high-speed signal transmission

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