CN209656750U

CN209656750U - A kind of chip of laser test device using novel probe

Info

Publication number: CN209656750U
Application number: CN201920250204.9U
Authority: CN
Inventors: 彭朝亮
Original assignee: Huaxin Zhisheng Microelectronics (chongqing) Co Ltd
Current assignee: Huaxin Zhisheng Microelectronics (chongqing) Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-11-19
Anticipated expiration: 2029-02-28

Abstract

The utility model discloses a kind of chip of laser test devices using novel probe, including bottom plate, boss, localization tool, needle stand, pcb board, needle body and chip, placing groove is offered on the roof of the localization tool, the chip is placed in placing groove, the surrounding of the placing groove symmetrically offers spring groove, second spring is fixedly installed on the side wall of each spring groove, the second spring is mounted on trapezoid block close to one end of chip, the trapezoid block is slidably connected in corresponding spring groove, each trapezoid block all extends to the outside of chip far from one end of ipsilateral second spring and contacts with each other with its side wall.Stable accurate positioning can be carried out to chip by the setting of each structure in this programme to fix, and avoided deviation occur when detection, while can increase the stability of backshank and syringe needle movement, reduced mobile deviation.

Description

A kind of chip of laser test device using novel probe

Technical field

The utility model relates to chip of laser the field of test technology more particularly to a kind of lasers using novel probe Apparatus for testing chip.

Background technique

Burn-in test to chip of laser be laser manufacture in critical step, in this step, need using Positioning fixture positions the chip of laser, is then in contact and is powered with chip using probe, wherein is usually Probe is mounted on to the top of chip, and its bottom is allow to be depressed into chip surface.

Through retrieving, China Patent No. CN208224429U discloses a kind of chip of laser test dress using novel probe It sets, which includes bottom plate, and plate upper surface is equipped with the boss of horizontal full-length, and rule is fixed with several needles on boss , multiple groups probe is fixed in each needle stand corresponding position, every group of probe and a chip are corresponding, and probe includes hollow cylinder knot The needle handle of structure is formed with cavity, the backshank of cavity upper end connecting cylinder shape and the cylindrical syringe needle that is slidably connected, needle inside needle handle Seat is equipped with several stepped holes, and stepped hole includes upper rank hole and the location hole of lower end of upper end, upper rank hole jacket needle handle, syringe needle Enter outside across location hole, backshank is electrically connected pcb board, and the length of needle handle and the ratio of needle length are 2: 1, the length of syringe needle Ratio with positioning hole length is 2: 1.

Above-mentioned test device has the drawback that localization tool is unstable to the positioning of chip in practical operation, shadow It rings detection normal operating to carry out, while stability is poor when probe is flexible, it is therefore desirable to improve.

Utility model content

Purpose of the utility model is to solve positioning of the localization tool in the prior art to chip is unstable, influence to examine It surveys normal operating to carry out, while stability poor disadvantage when probe is flexible, and a kind of laser using novel probe proposed Device apparatus for testing chip.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of chip of laser test device using novel probe, including bottom plate, boss, localization tool, needle stand, PCB Plate, needle body and chip offer placing groove on the roof of the localization tool, and the chip is placed in placing groove, described to put The surrounding for setting slot symmetrically offers spring groove, is fixedly installed with second spring on the side wall of each spring groove, and described Two springs are mounted on trapezoid block close to one end of chip, and the trapezoid block is slidably connected in corresponding spring groove, Mei Geti Shape block all extends to the outside of chip far from one end of ipsilateral second spring and contacts with each other with its side wall.

Preferably, the inside of each needle body offers telescopic cavity, is equipped with the first bullet in each telescopic cavity Spring, the both ends of each first spring are fixedly installed with limit plate, two sides of the limit plate far from the first spring It is respectively fixed with backshank and syringe needle, the backshank is located at the upside of needle body, and the syringe needle is located at the downside of needle body.

Preferably, the backshank extends to the outside of needle body far from one end of ipsilateral limit plate, and first spring is separate One end of ipsilateral limit plate extends to the outside of needle body, and the length ratio of the backshank and syringe needle is 1:2.

Preferably, it is symmetrically installed on the side wall of two limit plates there are two sliding block, on the side wall of the telescopic cavity The vertical chute to match with corresponding sliding block is offered respectively, and each sliding block, which is slided with corresponding the vertical chute, to be connected It connects.

Preferably, the backshank length is 3.4mm, and the length of the syringe needle is 1.7mm.

Preferably, sheet rubber is mounted on side wall of two trapezoid blocks far from ipsilateral second spring one end.

Compared with the prior art, the utility model has the beneficial effects that:

1, chip need to be only pressed when positioning and makes it into corresponding placing groove, can pass through the second bullet in four spring grooves Spring and trapezoid block are fixed, and then are fixed on chip stabilization accurately in placing groove.

2, by the way that sliding block is arranged on the side wall of limit plate, it can be ensured that backshank and the stable carry out telescopic moving of syringe needle, drop The deviation of low movement.

In conclusion can carry out stablizing accurate positioning fixation to chip by the setting of each structure in this programme, keep away Occur deviation when test free, while the stability of backshank and syringe needle movement can be increased, reduces mobile deviation.

Detailed description of the invention

Fig. 1 be the utility model proposes the overall structure of chip of laser test device using novel probe a kind of show It is intended to；

Fig. 2 be the utility model proposes a kind of chip of laser test device using novel probe localization tool and The scheme of installation of chip；

Fig. 3 be the utility model proposes a kind of chip of laser test device using novel probe needle body amplification Figure；

Fig. 4 be the utility model proposes a kind of chip of laser test device using novel probe part A structure Enlarged drawing；

Fig. 5 be the utility model proposes a kind of chip of laser test device using novel probe part B structure Enlarged drawing.

In figure: 1 bottom plate, 2 boss, 3 localization tools, 4 needle stands, 5 pcb boards, 6 needle bodies, 61 backshanks, 62 syringe needles, 63 first bullets Spring, 64 limit plates, 65 sliding blocks, 7 chips, 8 spring grooves, 9 second springs, 10 trapezoid blocks.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Referring to Fig.1-5, a kind of chip of laser test device using novel probe, including bottom plate 1, boss 2, positioning control Have 3, needle stand 4, pcb board 5, needle body 6 and chip 7, offers placing groove on the roof of localization tool 3, chip 7 is placed on placing groove Interior, the surrounding of placing groove symmetrically offers spring groove 8, and second spring 9 is fixedly installed on the side wall of each spring groove 8, the Two springs 9 are mounted on trapezoid block 10 close to one end of chip 7, and trapezoid block 10 is slidably connected in corresponding spring groove 8, each Trapezoid block 10 all extends to the outside of chip 7 far from one end of ipsilateral second spring 9 and contacts with each other with its side wall, and two trapezoidal Block 10 is mounted on sheet rubber on the side wall far from ipsilateral 9 one end of second spring, sheet rubber can avoid trapezoid block 10 and make to chip 7 At damage.

Above-mentioned bottom plate 1, boss 2, localization tool 3, needle stand 4, pcb board 5, needle body 6 and chip 7 concrete operations mechanism exist It is illustrated in the file of China Patent No. CN208224429U, therefore is repeated no more in this programme.

The inside of each needle body 6 offers telescopic cavity, and the first spring 63, each first bullet are equipped in each telescopic cavity The both ends of spring 63 are fixedly installed with limit plate 64, and two limit plates 64 are respectively fixed with backshank far from the side of the first spring 63 61 and syringe needle 62, backshank 61 be located at the upside of needle body 6, syringe needle 62 is located at the downside of needle body 6.

Backshank 61 extends to the outside of needle body 6 far from one end of ipsilateral limit plate 64, and the first spring 63 is far from ipsilateral limit One end of plate 64 extends to the outside of needle body 6, and the length ratio of backshank 61 and syringe needle 62 is 1:2, and 61 length of backshank is 3.4mm, The length of syringe needle 62 is 1.7mm.

Be symmetrically installed on the side wall of two limit plates 64 there are two sliding block 65, offered respectively on the side wall of telescopic cavity with The vertical chute that corresponding sliding block 65 matches, each sliding block 65 are slidably connected with corresponding the vertical chute.

Backshank 61 and syringe needle 62 are carried out by the sliding block 65 on 64 side wall of limit plate and the vertical chute in flexible groove sidewall It cooperates, so that stable telescopic moving can be realized, and mobile accuracy is high.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims

1. a kind of chip of laser test device using novel probe, including bottom plate (1), boss (2), localization tool (3), needle Seat (4), pcb board (5), needle body (6) and chip (7), which is characterized in that offer placement on the roof of the localization tool (3) Slot, the chip (7) are placed in placing groove, and the surrounding of the placing groove symmetrically offers spring groove (8), each spring It is fixedly installed on the side wall of slot (8) second spring (9), the second spring (9) is mounted on close to the one end of chip (7) Trapezoid block (10), the trapezoid block (10) are slidably connected in corresponding spring groove (8), and each trapezoid block (10) is far from ipsilateral the One end of two springs (9) all extends to the outside of chip (7) and contacts with each other with its side wall.

2. a kind of chip of laser test device using novel probe according to claim 1, which is characterized in that each The inside of the needle body (6) offers telescopic cavity, is equipped in each telescopic cavity the first spring (63), and each described The both ends of one spring (63) are fixedly installed with limit plate (64), and the one of two limit plates (64) separate first spring (63) Side is respectively fixed with backshank (61) and syringe needle (62), and the backshank (61) is located at the upside of needle body (6), and the syringe needle (62) is located at The downside of needle body (6).

3. a kind of chip of laser test device using novel probe according to claim 2, which is characterized in that described Backshank (61) extends to the outside of needle body (6) far from the one end of ipsilateral limit plate (64), and first spring (63) is far from ipsilateral One end of limit plate (64) extends to the outside of needle body (6), and the length ratio of the backshank (61) and syringe needle (62) is 1:2.

4. a kind of chip of laser test device using novel probe according to claim 3, which is characterized in that two Be symmetrically installed on the side wall of the limit plate (64) there are two sliding block (65), offered respectively on the side wall of the telescopic cavity with The vertical chute that corresponding sliding block (65) matches, each sliding block (65) are slidably connected with corresponding the vertical chute.

5. a kind of chip of laser test device using novel probe according to claim 4, which is characterized in that described Backshank (61) length is 3.4mm, and the length of the syringe needle (62) is 1.7mm.

6. a kind of chip of laser test device using novel probe according to claim 1, which is characterized in that two Sheet rubber is mounted on the side wall of separate ipsilateral second spring (9) one end of the trapezoid block (10).