KR20210027603A - Cover type connector for inspection of display apparatus - Google Patents

Abstract

Disclosed is a cover-type connector for electrically connecting a flexible flat cable for inspection to a connection part of a driving printed circuit board of a display device. The cover-type connector comprises: an upper cover part; first and second side cover parts extending in a vertical direction from both corners of the upper cover part and disposed to face each other; a rear cover part connecting one edge of the first and second side cover parts; a space dividing part disposed under the upper cover part and connecting the first and second side cover parts; and an electrode part having a first electrode part formed on an upper surface of the space dividing part and a second electrode part extending along an inner surface of the rear cover part. According to the present invention, the flexible flat cable (FFC) for inspection can be stably connected to the driving printed circuit board even in repeated coupling and detachment.

Description

Cover type connector for inspection of display devices {COVER TYPE CONNECTOR FOR INSPECTION OF DISPLAY APPARATUS}

The present invention relates to a cover type connector for inspection of a display device that connects a flexible flat cable (FFC) and a driving printed circuit board (PCB) of a display device for screen inspection of a display device.

In the manufacturing process of display device products such as LCD, various product inspections are performed such as lighting inspection after cell assembly, screen inspection after circuit mounting (SMT/bonding), and final inspection. In particular, in the case of screen inspection after circuit mounting, a flexible flat cable (FFC) for inspection is connected to the driving printed circuit board of the display device. At this time, for inspection, the end of the flat flexible cable for inspection (FFC) is inserted into the connector of the driving printed circuit board of the display device, so that the electrode of the flat flexible cable for inspection (FFC) is connected to the connector of the driving printed circuit board. It is electrically connected to a negative pin, and inspection is continuously performed using a single flat flexible cable (FFC) for inspection.

If continuous inspection is performed using a single flat flexible cable (FFC) for inspection, the flat flexible cable (FFC) for inspection may be damaged due to repetitive coupling/detachment with the connector part of the driving printed circuit board of the display device. I can. For example, the electrode surface of the inspection flexible flat cable (FFC) may be roughened or damaged, and in this case, the pin of the driving printed circuit board in contact with it may be secondaryly damaged. In addition, when the inspection is performed using a damaged flat flexible cable (FFC), a problem of driving a defective screen of the display device may occur due to a decrease in electrical contact capability, and the contact resistance with the driving printed circuit board connector unit increases and/or A problem such as occurrence of a short between electrodes may occur, and in this case, an IC element, which is a circuit component of a printed circuit board, may be damaged.

Therefore, it is required to develop a technology capable of stably connecting the inspection flexible flat cable (FFC) and the driving printed circuit board even in repeated coupling and detachment.

It is an object of the present invention to provide a cover-type connector capable of stably connecting a flat flexible cable (FFC) for inspection and a driving printed circuit board even through repeated coupling and detachment for inspection of a display device.

A cover-type connector according to an embodiment of the present invention electrically connects a flat flexible cable (FFC) for inspection to a connection part of a driving printed circuit board of a display device, and includes an upper cover part; First and second side cover portions extending in a vertical direction from both corners of the upper cover portion parallel to a first horizontal direction and disposed to face each other; A rear cover part connecting one corners of the first and second side cover parts parallel to the vertical direction; A space dividing part disposed below the upper cover part and parallel thereto, and connecting the first side cover part and the second side cover part; And a first formed on the upper surface of the space dividing part and in contact with the wiring of the test flexible flat cable when the test flexible flat cable is inserted into the first space formed between the upper cover part and the space dividing part. The connection part is extended from the electrode part and the first electrode part along the inner surface of the rear cover part to the inside of the second space formed by the space dividing part, the first and second side cover parts, and the rear cover part. When accommodated, it includes an electrode portion having a second electrode portion in contact with a pin formed on an outer surface of the connection portion.

In an embodiment, a gap is formed between an inner edge of the space division part and the rear cover part, and the first electrode part and the second electrode part may be connected to each other through the gap. In this case, the first electrode portion may extend in a first horizontal direction on an upper surface of the space division portion, and the second electrode portion may extend in a vertical direction on an inner surface of the rear cover portion.

In one embodiment, the connection portion is a lower plate portion disposed on a printed circuit board of the driving printed circuit board, an upper plate portion disposed above the lower plate portion, a rear edge of the lower plate portion, and a rear portion of the upper plate portion A rear plate portion connecting corners, first and second side plate portions connecting side edge portions of the lower plate portion and side edge portions of the upper plate portion, respectively, and at least the pin formed on an outer surface of the rear plate portion. In this case, in a state in which the connection part is accommodated in the second space, the outer surface of the rear plate part may face the inner surface of the rear cover part, and the second electrode part may contact the pin.

In one embodiment, the cover-type connector may further include a fastening protrusion protruding from the inner surface of the rear cover part, and in this case, a fastening groove in which the fastening protrusion is inserted and fixed to the rear plate part is formed. I can.

In one embodiment, the fastening protrusion may have a shape whose diameter decreases toward the end region, and in this case, the fastening protrusion may be inserted into the fastening groove and fixed in a force-fitting manner.

In one embodiment, the second electrode part is formed in a middle region of the inner surface of the rear cover part, in this case, the fastening protrusions are edge regions respectively located on both sides of the middle region of the inner surface of the rear cover part. And first and second fastening protrusions respectively formed in, and the fastening groove may include first and second fastening grooves formed on the rear plate portion so that the first and second fastening protrusions are respectively inserted and fixed. have.

When connecting the driving printed circuit board and the inspection flexible flat cable using the cover-type connector of the present invention, the screen inspection of the display device can be performed without directly inserting the inspection flexible flat cable into the connection portion of the driving printed circuit board. Therefore, damage due to friction of pins formed on the connection portion of the driving printed circuit board can be fundamentally prevented. In addition, the cover-type connector can be stably coupled to the connection part of the driving printed circuit board through the fastening protrusion, and prevents damage to the components of the display device due to poor electrical contact and occurrence of shorts during the screen inspection process. can do.

1A is a perspective view for explaining a state in which a driving printed circuit board of a display device and a flat flexible cable (FFC) for inspection are electrically connected using the cover-type connector of the present invention, and FIG. 1B is a cover-type connector of the present invention. It is a perspective view for explaining the combination of a flexible flat cable for inspection (FFC).
2A and 2B are cross-sectional views taken along cutting lines AA' and B-B' shown in FIG. 1A.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual size for clarity of the present invention.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the existence of features, numbers, steps, actions, elements, or a combination thereof described in the specification, but one or more other features or numbers It is to be understood that the possibility of the presence or addition of, steps, actions, components, or combinations thereof is not preliminarily excluded.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessive formal meaning unless explicitly defined in this application. Does not.

1A is a perspective view illustrating a state in which a driving printed circuit board of a display device and a flat flexible cable (FFC) for inspection are electrically connected using a cover-type connector of the present invention, and FIG. 1B is a cover-type connector of the present invention. It is a perspective view for explaining the combination of the inspection flexible flat cable (FFC), Figures 2a and 2b are cross-sectional views taken along the cutting lines AA' and B-B' shown in Figure 1a.

1A, 1B, 2A, and 2B, a cover-type connector 100 according to an embodiment of the present invention includes an upper cover part 110, a first side cover part 120, and a second side cover part. 130, a rear cover part 140, a space dividing part 150, an electrode part 160, and a fastening protrusion 170 may be included, and the flexible flat cable 10 for inspection is connected to the driving printed circuit board. Can be electrically connected to (20).

The upper cover part 110 may have a plate structure having a predetermined thickness. In a state in which the inspection flexible flat cable 10 is electrically connected to the driving printed circuit board 20, the upper cover portion 110 is disposed parallel to the inspection flexible flat cable 10 Can be. In one embodiment, the upper cover part 110 is disposed parallel to a plane defined by a first horizontal direction (X) and a second horizontal direction (Y) perpendicular thereto, and the first horizontal direction (X) It may have a rectangular plate structure having a width to and a length in the second direction (Y).

The first side cover part 120 and the second side cover part 130 are respectively from the first and second horizontal edges of the upper cover part 110 parallel to the first direction X. It may extend in a vertical direction (Z) orthogonal to the directions (X, Y) and may be disposed to face each other. The first side cover part 120 and the second side cover part 130 may have the same shape and size.

In one embodiment, each of the first side cover part 120 and the second side cover part 130 is parallel to a plane defined by the first horizontal direction (X) and the vertical direction (Z). It is disposed and may have a rectangular plate structure having a width in the first direction X and a height in the third direction Z. A width of the first and second side cover parts 120 and 130 in the first direction X may be substantially the same as a width of the upper cover part 110 in the first direction X. have.

The rear cover part 140 may have a plate structure parallel to a plane defined by the second horizontal direction (Y) and the vertical direction (Z), and parallel to the vertical direction (Z) and corresponding to each other. The first edge of the first side cover part 120 and the first edge of the second side cover part 130 may be connected. In one embodiment, the rear cover part 140 may have a rectangular plate structure having a height in the vertical direction (Z) and a length in the second horizontal direction (Y), and the vertical direction (Z) The height of the first and second side cover parts 120 and 130 may be substantially the same as the height in the vertical direction Z, and the length in the second horizontal direction Y is the upper cover part It may be substantially the same as the length of (110) in the second horizontal direction (Y).

The space dividing part 150 may be spaced apart from and parallel to the upper cover part 110, and the first edge and the second side cover part 130 connected to the first side cover part 120 A rectangular parallelepiped plate including connected second corners may have a structure. In one embodiment, the space dividing unit 150 may have a rectangular plate structure having a width in the first horizontal direction (X) and a length in the second horizontal direction (Y). A width of the space dividing part 150 in the first horizontal direction X may be substantially the same as or less than a width of the upper cover part 110 in the first horizontal direction X. However, when the width of the space dividing part 150 in the first horizontal direction (X) is substantially the same as the width of the upper cover part 110 in the first horizontal direction (X), the space division In the region in which the electrode unit 160 to be described below is formed among the installments 150, the electrode unit 160 extends between the edge of the space dividing unit 150 and the inner surface of the rear cover unit 140. A gap may be formed. And the width of the space dividing part 150 in the second horizontal direction (Y) is substantially the same as the width of the upper cover part 110 in the second horizontal direction (Y), so that the spatial dividing part ( Both corners of 150) parallel to the first horizontal direction X may be connected to inner surfaces of the first and second side cover parts 120 and 130, respectively.

In a state in which the flexible flat cable for inspection 10 is electrically connected to the driving printed circuit board 20, a first space between the space dividing unit 150 and the upper cover unit 120 is provided for the inspection. One end of the flat flexible cable 10 may be inserted, and is formed by the space division part 150, the first and second side cover parts 120 and 130, and the rear cover part 140, and the front side The connection part 21 of the driving printed circuit board 20 may be accommodated in a second space with an open direction and a downward direction.

The electrode unit 160 may include a first electrode unit 161 and a second electrode unit 162, and electrically connect the test flexible flat cable 10 to the driving printed circuit board 20 I can make it.

The first electrode part 161 may be formed to extend along the first horizontal direction X on the upper surface of the space dividing part 150. When the test flexible flat cable 10 is inserted in the first space between the space division part 150 and the upper cover part 120, the lower part of the insertion end of the test flexible flat cable 10 The wiring 11 exposed on the surface may contact the first electrode part 161 and be electrically connected thereto.

The second electrode part 162 may extend from the first electrode part 161 and may be formed to extend along the vertical direction Z on the inner surface of the rear cover part 140. The driving printed circuit in a second space formed by the space dividing part 150, the first and second side cover parts 120 and 130, and the rear cover part 140 and opened in the front direction and the downward direction. When the connection part 21 of the substrate 20 is inserted and received, the second electrode part 162 is in contact with a pin 21d formed on the connection part 21 of the driving printed circuit board 20 and Can be electrically connected.

In one embodiment, the connection part 21 of the driving printed circuit board 20 is mounted on the printed circuit board 20 so as to protrude from the upper surface of the printed circuit board 20, and the printed circuit board ( A pin 21d electrically connected to the IC chip (not shown) of 20) is provided. For example, the connection part 21 may include a lower plate part 21a disposed on the printed circuit board 20, an upper plate part 21b disposed parallel to the lower plate part 21a, The rear plate portion 21c connecting the rear edge of the lower plate portion 21a and the rear edge of the upper plate portion 21b, side edge portions of the lower plate portion 21a, and the upper plate portion 21b And first and second side plate portions (not shown) respectively connecting the side edge portions of and at least a pin 21d formed on an outer surface of the rear plate portion 21c.

In a state in which the test flexible flat cable 10 is electrically connected to the driving printed circuit board 20, the upper plate part 21b is located under the space division part 150 of the cover connector 100. It may be disposed parallel to this, and the rear plate portion 21c may be disposed to face the rear cover portion 140 of the cover-type connector 100, and on the inner surface of the rear cover portion 140 The formed second electrode part 162 may contact and be electrically connected to the pin 21d formed on the outer surface of the rear plate part 21c.

Meanwhile, the pin 21d may also be formed on the upper surface of the lower plate part 21a. In this case, a space between the lower plate part 21a and the upper plate part 21b for the inspection When the flat flexible cable 10 is directly inserted, the pin 21d formed on the upper surface of the lower plate portion 21a directly contacts the wiring 11 of the flat flexible cable for inspection Can be connected to.

The first electrode part 161 and the second electrode part 162 may be connected to each other through a gap formed between the edge of the space dividing part 150 and the rear cover part 140. That is, the electrode unit 160 may include a plurality of linear electrode patterns that extend without interruption on an upper surface of the space dividing unit 150 and an inner surface of the rear cover unit 140, and the electrode pattern In the field, a portion formed on an upper surface of the space dividing portion 150 forms the first electrode portion 161, and a portion formed on an inner surface of the rear cover portion 140 is the second electrode portion. (162) can be formed.

Meanwhile, based on a center line parallel to the vertical direction Z, the second electrode part 162 may be formed in a middle area of the inner surface of the rear cover part 140, and both edge areas of the middle area The second electrode part 162 may not be formed in the field.

The fastening protrusion 170 may be formed to protrude from the edge region of the inner surface of the rear cover part 140, and the rear plate part 21c of the connection part 21 of the driving printed circuit board 20 A fastening groove into which the fastening protrusion 170 is inserted and fixed may be formed in the.

In one embodiment, in order to stably fix the cover-type connector 100 to the connection part 21 of the driving printed circuit board 20, the diameter of the fastening protrusion 170 may be formed to decrease toward the end. In addition, the fastening protrusion 170 may be inserted into and fixed to the fastening groove in a force-fitting manner.

In one embodiment, the fastening protrusion 170 may include first and second fastening protrusions respectively formed on both edge regions of the inner surface of the rear cover part 140, in this case, the rear plate part First and second fastening grooves to which the first and second fastening protrusions are respectively inserted and fixed may be formed in (21c).

When connecting the driving printed circuit board and the inspection flexible flat cable using the cover-type connector of the present invention, the screen inspection of the display device can be performed without directly inserting the inspection flexible flat cable into the connection portion of the driving printed circuit board. Therefore, damage due to friction of pins formed on the connection portion of the driving printed circuit board can be fundamentally prevented. In addition, the cover-type connector can be stably coupled to the connection part of the driving printed circuit board through the fastening protrusion, and prevents damage to the components of the display device due to poor electrical contact and occurrence of shorts during the screen inspection process. can do.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention described in the following claims. You will understand that you can.

100: cover connector 110: upper cover portion
120: first side cover portion 130: second side cover portion
140: rear cover portion 150: space division portion
160: electrode part 170: fastening protrusion

Claims (7)

In the cover type connector for electrically connecting an inspection flexible flat cable (FFC) to a connection part of a driving printed circuit board of a display device,
An upper cover part;
First and second side cover portions extending in a vertical direction from both corners of the upper cover portion parallel to a first horizontal direction and disposed to face each other;
A rear cover portion connecting one corners of the first and second side cover portions parallel to the vertical direction;
A space dividing part disposed below the upper cover part and parallel thereto, and connecting the first side cover part and the second side cover part; And
A first electrode formed on the upper surface of the space division part and in contact with the wiring of the test flexible flat cable when the test flexible flat cable is inserted into the first space formed between the upper cover part and the space division part The connection part is accommodated in a second space formed by the space dividing part, the first and second side cover parts, and the rear cover part by extending along the inner surface of the rear cover part from the part and the first electrode part. In some cases, a cover-type connector comprising an electrode portion having a second electrode portion in contact with a pin formed on an outer surface of the connection portion. The method of claim 1,
A gap is formed between the inner edge of the space division part and the rear cover part, and the first electrode part and the second electrode part are connected to each other through the gap. The method of claim 2,
The first electrode portion, wherein the first electrode portion extends in a first horizontal direction on an upper surface of the space dividing portion, and the second electrode portion extends in a vertical direction on an inner surface of the rear cover portion. The method of claim 1,
The connection part is a lower plate part disposed on the printed circuit board of the driving printed circuit board, an upper plate part disposed above the lower plate part, a rear plate connecting a rear edge of the lower plate part and a rear edge of the upper plate part A portion, first and second side plate portions respectively connecting side edge portions of the lower plate portion and side edge portions of the upper plate portion, and at least the pin formed on an outer surface of the rear plate portion,
In a state in which the connection part is accommodated in the second space, the rear plate part has an outer surface facing the inner surface of the rear cover part, and the second electrode part contacts the pin. The method of claim 4,
Further comprising a fastening protrusion protruding from the inner surface of the rear cover part,
The rear plate portion, characterized in that the fastening groove is formed in which the fastening protrusion is inserted and fixed, the cover type connector. The method of claim 5,
The fastening protrusion has a shape whose diameter decreases toward an end region,
The fastening protrusion is characterized in that inserted into and fixed to the fastening groove in a force-fitting manner, cover-type connector. The method of claim 5,
The second electrode part is formed in a middle region of the inner surface of the rear cover part,
The fastening protrusion includes first and second fastening protrusions respectively formed in edge regions respectively located on both sides of the middle region of the inner surface of the rear cover part,
The fastening groove, characterized in that it comprises first and second fastening grooves formed on the rear plate portion so that the first and second fastening protrusions are inserted and fixed, respectively.

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