CN216621032U

CN216621032U - A light module and whole membrane image detection machine of liquid crystal are swept to line for developing glass

Info

Publication number: CN216621032U
Application number: CN202220100559.1U
Authority: CN
Inventors: 朱庆华; 华卫华; 黄双平
Original assignee: Shenzhen Quanzhou Automation Equipment Technology Co ltd
Current assignee: Shenzhen Quanzhou Automation Equipment Technology Co ltd
Priority date: 2022-01-15
Filing date: 2022-01-15
Publication date: 2022-05-27
Anticipated expiration: 2032-01-15

Abstract

The utility model discloses a line scanning optical module for developing glass and a liquid crystal whole film image detector, which are used for detecting a developing circuit on the developing glass, wherein the line scanning optical module comprises a light source part, the light source part comprises a plurality of luminous pieces which are arranged side by side along the length direction, and the luminous pieces emit white light; the light guide part comprises a plurality of light guide circular truncated cones, the plurality of light guide circular truncated cones are arranged corresponding to the plurality of luminous elements along the axial direction and are positioned on the light emitting sides of the luminous elements; and light-shielding sheets disposed at both ends of the light guide portion in the longitudinal direction. The problem of the light source that the line scanned light module among the prior art provided after shining development glass, the formation of image is not obvious, leads to detection effect poor is solved.

Description

A light module and whole membrane image detection machine of liquid crystal are swept to line for developing glass

Technical Field

The utility model relates to the technical field of liquid crystal display manufacturing, in particular to a line scanning optical module for developing glass and a liquid crystal whole film image detector.

Background

In the production process of the liquid crystal screen, particularly in the manufacture of a black-and-white LCD screen, the whole transparent glass forms development glass after the development process is finished, and development lines are formed on the glass. And the developed lines may be subsequently etched to form the desired circuitry. The developing line may have poor etching due to foreign matter, scratches, and the like. For the defects, the line profile on the developing glass is usually checked manually through a high-power microscope, and the mass production on a production line is ensured after the first sample is good. However, the manual detection efficiency is low, and the detection of one piece of full mold glass can be completed within 30-60 minutes generally. Moreover, the field of view of the high power microscope is small, and omission easily occurs when the glass is moved manually. In addition, missed inspection is also prone to occur due to visual fatigue, insufficient skills, poor management and the like. Further, the products with poor batch quality flow into the subsequent process, and a large amount of waste is caused. Therefore, the liquid crystal whole film image detector is required to perform automatic detection.

Conventional liquid crystal full film image inspection machines typically employ a monochromatic light source to provide a light source for the camera. However, the lines on the developing glass for automatic detection are very fine, and the diameter can be as small as 7-10 um, so that the image data amount is huge. And a layer of photosensitive adhesive layer is arranged on the glass, the photosensitive adhesive layer after the development process can form film interference due to uneven coating, a large number of black-white ripples can be generated after the common monochromatic line is scanned and irradiates the surface of the development glass to form areas with different light and shade, and the development line shot by the camera is also imaged through black-white gray scale, so that the black-white ripples are easily confused with the development line, and the integrity of the whole development line is damaged. The existing liquid crystal whole film image detector is adopted, the effect is poor when a monochromatic linear array light source is adopted to detect a developing line, and the flowing defective products are led to involve material scrapping and manual loss.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a line scanning optical module for developing glass and a liquid crystal full-film image detector, which solve the problem of poor detection effect caused by the inconspicuous imaging after the developing glass is irradiated by the light source provided by the line scanning optical module in the prior art.

The technical scheme of the utility model is as follows:

a line scanning optical module for developing glass is used for detecting a developing circuit on the developing glass and comprises a light source part, a light source part and a light source module, wherein the light source part comprises a plurality of light-emitting pieces which are arranged side by side along the length direction, and the light-emitting pieces emit white light;

the light guide part comprises a plurality of light guide circular truncated cones, the plurality of light guide circular truncated cones are arranged corresponding to the plurality of luminous elements along the axial direction and are positioned on the light emitting sides of the luminous elements;

and light-shielding sheets disposed at both ends of the light guide portion in the longitudinal direction.

Further, the light source part is a light bar, the light bar comprises a lamp panel, the light emitting part is an LED lamp bead, and the LED lamp beads are arranged on the lamp panel; or

The light source unit includes: the light guide part is arranged on the front end of the optical fiber, and the front end of the optical fiber is used as the light emitting part and faces the light guide part.

Further, a light blocking film is arranged between the adjacent light guide circular truncated cones.

Further, when light source portion adopts the lamp strip, the line sweeps light module and still includes:

the lamp strip is arranged in the first accommodating cavity, and the light guide part is arranged in the second accommodating cavity;

and the transparent protective plate is arranged on the light emergent side of the light guide part and is positioned in the second accommodating cavity.

Further, the line scanning optical module further comprises:

the radiator is arranged in the first accommodating cavity and is positioned on the back of the light bar;

the fan is arranged on the shell and is positioned on one side, deviating from the light bar, of the heat radiator.

Further, the housing includes: the upper shell and the support frame are connected to the upper shell;

the first accommodating cavity is arranged in the upper shell, and the fan is arranged on the upper shell;

the second accommodating cavity is arranged in the supporting frame.

Furthermore, connecting plates are arranged on two sides of the supporting frame in the length direction, clamping grooves are formed in the connecting plates, the light guide part is clamped and embedded in the second accommodating cavity, and two ends of the light guide part in the length direction are clamped and embedded in the clamping grooves.

Based on the same conception, the utility model also provides a liquid crystal whole film image detector, which comprises: the machine table is horizontally arranged;

an XYZ direction moving assembly arranged on the machine table;

a camera assembly disposed on the XYZ-direction moving assembly; and

the line scanning module is detachably arranged on the XYZ direction moving assembly.

Furthermore, the shooting direction of the camera assembly and the light emitting direction of the line scanning light module are inclined to the vertical direction and are symmetrically arranged.

Further, the board includes load-bearing platform, load-bearing platform is the marble platform.

Has the advantages that: compared with the prior art, the line scanning light module for developing glass and the liquid crystal whole film image detector provided by the utility model emit white light towards the light guide part through the light source part, guide the light through the light guide part formed by the light guide circular truncated cones, the light guide circular truncated cones are arranged corresponding to the light emitting elements of the light source part, the light emitted by one light emitting element is emitted from the corresponding light guide circular truncated cone, the light emitted by the light source is changed into parallel light or quasi-parallel light through the corresponding light guide circular truncated cones, the axial length of the light guide circular truncated cones is short, the light mixing distance from the side surfaces is short, most of the light emitted by the light emitting elements can be emitted in parallel to form the parallel light or quasi-parallel light, the light cannot be obliquely emitted from the axial two ends of the light guide part through the light shading sheets at the two ends of the light guide part, and the emitted light is further parallel light or similar to the parallel light (the included angle is less than 10 degrees), parallel light shines the surface of the development glass that awaits measuring, because there is very little step between the profile edge of the development circuit on the development glass and the glass plane, when the step position was shone to the light of perpendicular to development glass, there is not stray light's influence, just there is not light reflection back camera lens in the step, the profile edge that the circuit was developed like this is shot by the camera and is formed like black, and the black limit of the edge after the development circuit formation of image is just very clear like this. The line shape on the developing glass can be clearly judged through the clear black edge. In the scattered light (scattering monochromatic light) adopted in the prior art, the incident angles of the light processed by the diffusion sheet are different, especially the side surface of the light guide part can emit light to form stray light, so that the outline edge of the developing line can reflect the light to enter the lens, and the light emitted from the outline side surface can be displayed on a photo, so that the brightness of the outline edge of the line is not obviously different from other areas, the outline of the line shot by a camera cannot be obviously displayed in black, and the outline cannot be easily identified. Therefore, by adopting the scheme, illumination can be well provided for imaging of the camera, so that the imaging of the camera can show an obvious line profile. The whole membrane image detection machine of liquid crystal that the light module formed is swept to line of this scheme of adoption can carry out clear formation of image to the circuit profile of defective products, is difficult for causing the omission, and detection effect is good, can in time reprocess behind the defective products discovery. Saving materials and cost. The problem of the white light source that the line scanned light module among the prior art provided after shining development glass, the formation of image is not obvious, leads to the detection effect poor is solved.

Drawings

FIG. 1 is an exploded view of an embodiment of a line scanning module for developing glass according to the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a line scanning module for developing glass according to the present invention;

FIG. 3 is an exploded view of a part of the structure of a liquid crystal full film image inspection machine according to the present invention;

FIG. 4 is a schematic view of a partial structure of a liquid crystal full film image inspection machine according to the present invention;

FIG. 5 is a schematic structural diagram of a light source unit according to an embodiment of the line scanning module for developing glass of the present invention;

FIG. 6 is a schematic structural diagram of a liquid crystal full film image detector with a marking device according to the present invention.

The reference numbers in the figures: 10. a line scanning module; 20. a machine platform; 30. an XYZ direction moving assembly; 40. a camera assembly; 41. an imaging section; 42. a lens; 50. a cartridge clip mechanism; 60. an area-array camera; 70. a marking device; 100. a light source unit; 110. a lamp panel; 120. a light emitting member; 130. an optical fiber; 140. a light emitting lamp; 150. a moving assembly; 200. a light guide part; 210. a light guide circular table; 400. a housing; 410. an upper shell; 411. a first accommodating cavity; 420. a support frame; 421. a second accommodating cavity; 422. a card slot; 430. a connecting plate; 431. a clamping groove; 500. a transparent protective plate; 600. a heat sink; 700. a fan; 800. an aviation terminal.

Detailed Description

The utility model provides a line scanning optical module for developing glass and a liquid crystal whole film image detector, and in order to make the purpose, technical scheme and effect of the utility model clearer and clearer, the utility model is further described in detail below by referring to the attached drawings and taking examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Aiming at the low efficiency of the existing manual detection, the detection of a piece of full mold glass can be completed within 30-60 minutes. Moreover, the field of view of the high power microscope is small, and omission easily occurs when the glass is moved manually. In addition, missed inspection is also prone to occur due to visual fatigue, insufficient skills, poor management and the like. And then lead to bad product in batches to flow into back end process, cause a large amount of condemned problems, this scheme provides a liquid crystal whole membrane image detection machine, and front end process accessible liquid crystal whole membrane image detection machine carries out automated inspection to replace the manual work, raise the efficiency, reduce and scrap. The lines after the development glass process are very fine, and the diameter can be as small as 7-10 um, so that the image data volume shot by the liquid crystal whole film image detection machine is huge. And the uneven thickness of the photosensitive adhesive layer coated on the surface of the developing glass can form film interference, and a large number of black and white ripples can be generated after the surface is irradiated by scanning light of a common monochromatic line to form areas with different light and shade, so that the areas are easily confused with a developing circuit, and the integrity of the whole developing circuit is damaged. The existing liquid crystal whole film image detector is adopted, and the effect is poor when a single-color linear array light source is adopted to detect the developing line. If the existing light source is not improved, the defects of the front-end process cannot be found in time, and the existing defects are effectively controlled, so that the flowing defective products involve material scrapping and manual loss.

In order to improve the problems, the scheme also provides a line scanning optical module for developing glass, which is applied to a liquid crystal whole film image detector and has a clear line outline imaging effect. The high-speed detection problem of the micron-sized resolution images of the full-mold developing glass is solved through a linear array camera with a large target surface and high resolution, an optical lens with high resolution, a specially designed light-emitting mode and a light source. The method comprises the following specific steps:

example one

As shown in fig. 1 and 2, the present embodiment discloses a line scanning module 10 for developing glass, which is used for detecting a line on the developing glass, and includes a light source 100, a light guide 200, and a light shielding sheet (not shown). For convenience of structural description, the projection profile of the line scanning module 10 on the horizontal plane is taken as a rectangle, the long side direction of the rectangle is the length direction, and the short side direction is the width direction. The light source unit 100 in this embodiment extends along the length direction, the light source unit 100 includes a plurality of light guide circular truncated cones 210, and is a plurality of the light guide circular truncated cones 210 axially correspond to the light emitting members 120 and are located on the light emitting side of the light emitting members 120, and the light emitting members 120 emit white light. Taking the example that the developing glass to be detected is positioned at the lower side of the light source part 100, the light source part 100 emits light downwards, the light guide part 200 is positioned below the light source part 100, and the light guide part 200 has the effect of converging the light of the light source part 100 into approximately parallel light, so that the light is concentrated and the brightness is improved. By emitting white light, the white light irradiates the photosensitive adhesive layer with uneven thickness, light is always reflected to form rainbow color, the reflected light is received by the camera, imaging is realized on a black-white photo, and dark spots cannot appear on the part with the reflected light in the photo. The original monochromatic light irradiates the photosensitive adhesive layer, and some light is not reflected, so that dark spots can appear. Therefore, in the present embodiment, white light is used as line scanning light, which has a significant effect of improving an image. And the light emitted by the light source is changed into parallel light or quasi-parallel light through the corresponding light guide circular truncated cone 210, and the axial length of the light guide circular truncated cone 210 is short, and the light mixing distance from the side surface is short, so that most of the light emitted by the light-emitting element 120 can be emitted in parallel, stable parallel light or quasi-parallel light (the included angle is less than 10 degrees) is formed, and the formed light is not easy to scatter. The light-shielding sheets are disposed at both ends of the light guide portion 200 in the longitudinal direction, and block light from both ends of the light guide portion 200. The light rays are not emitted obliquely from both ends in the axial direction of the light guide section 200, and thus the parallel light is not greatly affected. It is still ensured that the light rays emitted from the light guide part 200 are parallel light. Parallel light shines the surface of the development glass that awaits measuring, because there is very little step between the profile edge of the development circuit on the development glass and the glass plane, when the step position was shone to the light of perpendicular to development glass, there is not stray light's influence, just there is not light reflection back camera lens in the step, the profile edge that the circuit was developed like this is shot by the camera and is formed like black, and the black limit of the edge after the development circuit formation of image is just very clear. The line shape on the developing glass can be clearly judged through the clear black edge.

The light source 100 in this embodiment is a light bar, which specifically includes a lamp panel 110, and a plurality of lights are arranged on the lamp panel 110; lamp plate 110 extends along length direction and sets up, and is a plurality of illuminating part 120 sets up along the length direction interval on the lamp plate 110. This makes the light emitted from the light emitting member 120 linear in the longitudinal direction. Since the camera requires high-speed imaging and its exposure time is short, the brightness of light provided by the light source needs to be high. Therefore, the light emitting member 120 of the present scheme employs LED lamp beads, and is a high-brightness and low-heat-productivity LED lamp bead, and the high-brightness LED lamp bead emits a white high-brightness LED lamp.

Because the light source part 100 may need to select different light sources to match with the glass to be detected according to the type of the detected glass, the line scanning module can be designed to be detachable, so that the replacement can be realized. However, in order to facilitate replacement of the light source, for example, to change white light into monochromatic light, or to change the light source with stronger light, the light source 100 of the present embodiment may be replaced in another structure. The method specifically comprises the following steps: an optical fiber 130, and a light emitting lamp 140 positioned at a distal end of the optical fiber, wherein a distal end of the optical fiber 130 serves as a light emitting member facing the light guide portion. The luminescent lamp still adopts highlight LED lamp pearl as the light source like this, optic fibre is provided with a plurality ofly, and the terminal and the luminescent lamp phase-match of a plurality of optic fibres carry out the conduction with the light that the luminescent lamp sent to make light spread out from the optic fibre front end, the optic fibre front end is towards the light guide part. Thus, the luminescent lamp can be arranged outside the online sweeping light module 10 through the remote light transmission of the optical fiber, so that the luminescent lamp can be directly replaced when the lamp light needs to be replaced, and the connection structure and the position relation between the front end of the optical fiber and the light guide part can not be changed. The light source part is easier to replace and the operation is more convenient.

In addition, an interface may be provided at a connection portion between the end of the optical fiber 130 and the light emitting lamp 140, and the end of the optical fiber 130 and the light emitting lamp 140 may be detachably butted via the interface, so that the light emitting lamp 140 may be provided with various specifications, and the light emitting lamps may be respectively butted with the light emitting lamps. When light of different specifications is required, the corresponding light emitting lamp 140 can be connected to the end of the optical fiber 130 through the interface, which facilitates the replacement of the light emitting lamp 140.

In other embodiments, a moving assembly 150, such as a linear sliding table driven by a motor, or a screw rod and a nut driven by a motor, may be further provided. The moving assembly 150 is connected to the light emitting lamps 140 of different specifications, and the light emitting lamps of different specifications can be automatically moved to the interface of the optical fiber by the driving of the motor, and the light emitting lamps of required colors are connected to the optical fiber, thereby realizing the automatic switching of the light source.

Further, the light source unit 100 is set in a mode of guiding light by an optical fiber, and a light emitting lamp of the light source is not disposed near the lens and moves together with the lens. And the luminous lamp bead that the luminescent lamp that keeps away from the camera lens setting is supporting, and its size, light intensity, heat dissipation isoparametric do not receive near camera lens installation size's restriction, can provide the illuminating effect of higher intensity. Therefore, the optical fiber can be used as an external coaxial light source.

In this embodiment, the central axis of the cylindrical light guide portion 200 formed by the plurality of light guide circular truncated cones 210 is parallel to the length direction of the light bar; the light of the LED lamp beads is converged into the effect of approximate parallel light through the cylindrical light guide part 200, and the light is concentrated to improve the brightness. The light guide portion 200 is a glass light guide portion or a transparent acrylic light guide portion; thus, light guide unit 200 has high light transmittance and low manufacturing cost.

In another scheme of this embodiment, a light blocking film is disposed between adjacent light guide circular truncated cones 210, so that each light guide circular truncated cone 210 can be separated, and thus the side surface (axial side surface) between each light guide circular truncated cone 210 does not guide light, thereby avoiding light mixing and more stably ensuring that the emitted light is parallel light.

By adopting the parallel light path mode, for developing glass, the diffusion angle of a conventional linear light source in the axial direction of the light guide rod is large, so that the effect similar to a shadowless lamp is achieved. In this embodiment, the parallel film (diffusion film) is eliminated, and the quartz light guide rod is cold-polished and then cut into a wafer with a thickness of 3-10 mm to form the light guide circular table 210. This allows the outgoing light to be nearly collimated (at an angle of less than 10 °) also in the direction of the rod axis.

As shown in fig. 1, in this embodiment, a detailed structural description is given by taking a structure when the light source portion 100 adopts a light bar as an example, and the line scanning module 10 further includes: a housing 400 and a transparent protection plate 500. A first accommodating cavity 411 and a second accommodating cavity 421 communicated with the first accommodating cavity 411 are arranged in the housing 400, the second accommodating cavity 421 is arranged below the first accommodating cavity 411, the light bar is arranged in the first accommodating cavity 411, the inner wall profile of the second accommodating cavity 421 is matched with the light guide part 200, and the light guide part 200 is arranged in the second accommodating cavity 421. The transparent protective plate 500 extends along the length direction, and the transparent protective plate 500 is disposed at the lower portion of the light guide part 200 and located in the second receiving cavity 421. In a specific structure, the lower portion of the second accommodating chamber 421 is an opening, a clamping groove 422 is formed on an inner wall of the opening, and the transparent protection plate 500 is clamped in the clamping groove 422 and covers the opening. The housing 400 and the transparent protection plate 500 form a bracket, so that the light bar and the light guide part 200 can be protected.

As shown in fig. 1 and 2, the line scanning optical module 10 in this embodiment further includes: a heat sink 600, and a fan 700. The heat sink 600 is arranged in the first accommodating cavity 411, an opening is formed in the upper portion of the first accommodating cavity 411 on the back surface (above) of the light bar, and the heat sink 600 is filled in the first accommodating cavity 411 and arranged towards the opening; the fan 700 is disposed on the housing 400, and the fan 700 is located on a side (above) of the heat sink 600 facing away from the light bar. Set up radiator 600 at the back of lamp strip like this, set up fan 700 on radiator 600, radiator 600 conducts heat, conducts the heat on the lamp strip and the heat in the first holding chamber 411, bloies through fan 700, makes the heat on the radiator 600 in time transmit out to the realization is to the heat dissipation of lamp strip.

The line scanning optical module 10 further includes: the aviation terminal 800 is arranged on the shell 400, and the aviation terminal 800 is electrically connected with the light bar. Aviation terminal 800 is as the quick connector plug, can the external cable of high-speed joint to for the lamp strip power supply.

As shown in fig. 1 and 2, to facilitate assembly, the housing 400 includes: an upper case 410, and a support bracket 420 connected to the upper case 410; the first receiving cavity 411 is disposed in the upper case 410, and the fan 700 is disposed on the upper case 410; the second receiving cavity 421 is disposed in the supporting frame 420, and the transparent protection plate 500 is disposed on the supporting frame 420 and located at a lower opening (an opening of the second receiving cavity 421). The upper case 410 and the supporting frame 420 are spliced together, the light bar is fixed by the upper case 410, and the light guide part 200 and the transparent protection plate 500 are fixed by the supporting frame 420. The disassembly and the assembly of each part are facilitated, and the assembly efficiency is improved.

The supporting frame 420 is provided with connecting plates 430 at two sides in the length direction, the connecting plates 430 are provided with embedding grooves 431, the shading sheet is adhered to the inner walls of the embedding grooves 431, the light guide part 200 is embedded in the second accommodating cavity, and two ends in the length direction are embedded in the embedding grooves 431. The two ends of the light guide part 200 are clamped and embedded by the connecting plate 430, so that the light guide part 200 can be conveniently inserted into the second accommodating cavity, and the two ends of the second accommodating cavity are conveniently sealed by the connecting plate 430, so that the light guide part 200 is convenient to mount.

Therefore, in the embodiment, white light is emitted toward the light guide portion 200 by the light source portion 100, light is guided by the light guide portion 200 formed by the plurality of light guide circular truncated cones 210, the plurality of light guide circular truncated cones 210 are disposed corresponding to the light emitting elements 120 of the light source portion 100, light emitted by one light emitting element 120 is emitted from the corresponding light guide circular truncated cone 210, the light emitted by the light source is changed into parallel light or quasi-parallel light by the corresponding light guide circular truncated cone 210, the axial length of the light guide circular truncated cone 210 is short, and the light mixing distance from the side surface is short, so that most of light emitted by the light emitting element 120 is emitted in parallel to form parallel light or quasi-parallel light, and the light is prevented from being obliquely emitted from the two axial ends of the light guide portion 200 by the light shielding sheets at the two ends of the light guide portion 200, so that the emitted light is parallel light or quasi-parallel light (the included angle is smaller than 10 °), and the parallel light is irradiated to the surface of the development glass to be measured, because there is very little step between the outline edge of the development circuit on the development glass and the glass plane, when the light perpendicular to the development glass shines the step position, there is not stray light's influence, just there is not light reflection back to the camera lens in the step, the outline edge that the circuit was developed like this is shot by the camera and is like black, and the black limit of the edge after the development circuit formation of image is just very clear. The line shape on the developing glass can be clearly judged through the clear black edge. In the scattered light adopted in the prior art, the incident angles of partial light processed by the diffusion sheet are different, especially the side surface of the light guide part can emit light to form stray light, so that the outline edge of the developing circuit can reflect light to enter a lens, and the light emitted from the outline side surface can be displayed on a photo, so that the brightness of the outline edge of the circuit is not obviously different from other areas, the outline of the shooting circuit of a camera cannot be obviously displayed in black, and the outline cannot be easily identified. Therefore, by adopting the scheme, illumination can be well provided for imaging of the camera, so that the imaging of the camera can show an obvious line profile. The whole membrane image detection machine of liquid crystal that light module 10 formed is swept to line of this scheme of adoption can carry out clear formation of image to the circuit profile of defective products, is difficult for causing the omission, and detection effect is good, can in time reprocess behind the defective products discovery. Saving materials and cost. The problem of the white light source that line scanning optical module 10 provided among the prior art is after shining development glass, and the formation of image is not obvious, leads to the detection effect poor is solved.

Example two

As shown in fig. 3 and fig. 4, based on the same concept, the utility model further provides a liquid crystal whole film image detector, which includes: the stage 20, the XYZ-direction movement assembly 30, the camera assembly 40, and the line scanning module 10 in the first embodiment. The stage 20 is horizontally disposed, the XYZ direction movement assembly 30 is disposed on the stage 20, and the camera assembly 40 is disposed on the XYZ direction movement assembly 30; the line scanning module 10 is detachably disposed on the XYZ-direction movement assembly 30. The development glass that awaits measuring is placed on board 20 horizontally, move subassembly 30 through XYZ direction and drive camera subassembly 40 and line and sweep the light module at the X direction, the Y direction, and move in the Z direction, realize that camera subassembly 40 and line sweep the light module and sweep the development glass that awaits measuring in horizontal plane (XY plane), treat the development glass that detects and polish through line sweeping light module 10, and shoot immediately through camera subassembly 40, realize quick photo, and show the photo through outside computer, or inside display screen. The detection of the detected developing glass is realized.

The machine 20 includes a bearing platform, which is a marble platform. Adopt the marble platform to guarantee the plane portion of board 20, the marble does not have the internal stress, and when it bore the developing glass who treats the piece, can not influence the detection precision because of stress, but the marble vibration of buffering has moreover avoided in the testing process, and little vibration is to detecting the influence of structure. Paving a diffuse reflection basement membrane on the detection area of the marble platform; the high-brightness LED line light source with various wavelengths is adopted, and the pure black diffuse reflection (sub-light) bottom film is matched, so that the signal-to-noise ratio of the ITO circuit image is improved. The interference in the detection process is reduced, and the imaging quality is improved.

As shown in fig. 4, the camera module 40 of the present liquid crystal full film image inspection machine includes: an imaging section 41, and a lens 42 connected to the program section; the imaging part 41 adopts a line camera with a large target surface and high resolution, and under the condition of the same optical magnification, the view field range of the image is enlarged as much as possible to reach 16K (or more). The lens 42 employs a high-resolution optical lens 42. Specifically, a lens 42 with the size about 1.75 times is adopted to match with a linear array camera with a large target surface, so that the image resolution of 2um is achieved, and the circuit on the developing glass with the size of 7-10 um can be detected. Or the lens 42 with higher resolution, such as 3.5-5 times of the lens 42, can be used to improve the resolution to 1 um-0.7 um. The imaging effect is better, and the detection result is more accurate. A lens balance adjustment structure is designed, and a micrometer is used for adjusting the base of the lens 42.

As shown in fig. 4, the shooting direction of the camera assembly 40 and the light emitting direction of the line scanning module 10 in this embodiment are both inclined to the vertical direction and are symmetrically arranged. In high resolution, the brightness loss of the light source can be reduced by oblique lighting (instead of coaxial light), and the reflection intensity of the circuit on the developing glass can be improved. And the influence of the coaxial light half reflector on the imaging quality can be avoided, the light loss is further reduced, and the light brightness is improved. The XYZ-direction movement assembly 30 is provided with a cartridge clip mechanism 50, the cartridge clip mechanism 50 is arranged on the XYZ-direction movement assembly 30 and can be detachably connected with the line scanning module 10, and when the line scanning module 10 is inserted into the cartridge clip mechanism 50, the line scanning module 10 and the XYZ-direction movement assembly 30 are fixed; when the line scanning module 10 is pulled out from the cartridge clip mechanism 50, the light sources with different colors can be replaced quickly.

In addition, the liquid crystal whole-film image detector in the embodiment further comprises a grating ruler, and the grating ruler can be triggered to generate a photographing trigger signal, so that the starting positions of the multiple rows of collected images are consistent, and the jigsaw is consistent. The camera module 40 of the present embodiment includes an area-array camera 60 in addition to the line-scan camera. And the cooperative work is realized by adopting the functions of the area-array camera 60 and the line-scan camera FA (automatic focusing).

In another embodiment, the whole liquid crystal film image detector is further provided with a marking device 70, which can mark the error part of the circuit on the developing glass and indicate that the developing glass is defective in a more obvious way. For automatic control of the marking device 70, a movement driving device or an XYZ-direction movement assembly 30 may be provided, and the marking device is moved to a corresponding error position for marking by receiving a control command. The marking device can also be replaced by a modifying device to directly modify the error.

The whole liquid crystal film image detection machine in the embodiment has high test precision, the resolution exceeds that of a common microscope, micron-sized fine short circuits, broken circuits or other defects can be detected, and the identification capability of a common technician is exceeded. And the production efficiency is high, the detection of the whole mold glass can be completed within 1-5 minutes, and the efficiency is 20-30 times of the manual detection efficiency. The waiting time of the first inspection of the sample is greatly shortened, and the utilization rate of the assembly line is improved. When accidental defects occur, defects can be found in time, technological parameters can be adjusted, and large-batch defects caused by accumulation can be avoided. The quality is stable and reliable, does not depend on the skill level and the mental state of workers, and ensures the quality of the manufacturing process.

In summary, compared with the prior art, the line scanning module and the liquid crystal whole film image detector for developing glass provided by the utility model emit white light towards the light guide part through the light source part, the white light irradiates the photosensitive adhesive layer with uneven thickness, light is always reflected, the reflected light is received by the camera to realize imaging, and thus dark spots cannot appear in a picture. The light guide part formed by a plurality of light guide circular truncated cones guides light, the plurality of light guide circular truncated cones are arranged corresponding to each light-emitting element of the light source part, the light emitted by one light-emitting element is emitted from the corresponding light guide circular truncated cone, the light emitted by the light source is changed into parallel light or quasi-parallel light by the corresponding light guide circular truncated cone, the axial length of the light guide circular truncated cone is short, the light mixing distance from the side surface is short, so most of the light emitted by the light-emitting element can be emitted in parallel to form the parallel light or quasi-parallel light, the light cannot be obliquely emitted from the axial two ends of the light guide part by the light shading sheets at the two ends of the light guide part, the emitted light is parallel light or quasi-parallel light (the included angle is less than 10 degrees), the parallel light irradiates the surface of developing glass to be detected, and because a tiny step exists between the outline edge of a developing circuit on the developing glass and the glass plane, when the light perpendicular to the developing glass irradiates the step position, no stray light influence exists, no light is reflected back to the lens in the step, the image formed by the camera at the outline edge of the line developing is black, and the black edge of the developing line after imaging is very clear. The line shape on the developing glass can be clearly judged through the clear black edge. In the scattered light (scattering monochromatic light) adopted in the prior art, the incident angles of the light processed by the diffusion sheet are different, especially the side surface of the light guide part can emit light to form stray light, so that the outline edge of the developing line can reflect the light to enter the lens, and the light emitted from the outline side surface can be displayed on a photo, so that the brightness of the outline edge of the line is not obviously different from other areas, the outline of the line shot by a camera cannot be obviously displayed in black, and the outline cannot be easily identified. Therefore, by adopting the scheme, illumination can be well provided for imaging of the camera, so that the imaging of the camera can show an obvious line profile. The whole membrane image detection machine of liquid crystal that the light module formed is swept to line of this scheme of adoption can carry out clear formation of image to the circuit profile of defective products, is difficult for causing the omission, and detection effect is good, can in time reprocess behind the defective products discovery. Saving materials and cost. The problem of the white light source that the line scanned light module among the prior art provided after shining development glass, the formation of image is not obvious, leads to the detection effect poor is solved.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims

1. A line scanning optical module for developing glass is used for detecting a developing circuit on the developing glass and is characterized by comprising a light source part, a light source part and a light source part, wherein the light source part comprises a plurality of luminous pieces which are arranged side by side along the length direction, and the luminous pieces emit white light;

2. The line scanning light module of claim 1, wherein the light source part is a light bar, the light bar comprises a lamp panel, the light emitting element is an LED light bead, and the plurality of LED light beads are arranged on the lamp panel; or

3. The line scanning optical module according to claim 1, wherein a light blocking film is disposed between adjacent light guiding circular truncated cones.

4. The line-scanning module of claim 1, wherein when the light source section employs a light bar, the line-scanning module further comprises:

5. The line-scanning optical module of claim 4, further comprising:

6. The line scanning module of claim 5, wherein the housing comprises: the upper shell and the support frame are connected to the upper shell;

the second accommodating cavity is arranged in the supporting frame.

7. The line scanning module according to claim 6, wherein connecting plates are disposed on two sides of the supporting frame in the length direction, each connecting plate is provided with an insertion groove, the light guide portion is inserted into the second receiving cavity, and two ends of the light guide portion are inserted into the insertion grooves.

8. A liquid crystal whole film image detection machine is characterized by comprising: the machine table is horizontally arranged;

an XYZ direction moving assembly arranged on the machine table;

a camera assembly disposed on the XYZ-direction moving assembly; and

the line scan module for developing glass as claimed in any one of claims 1 to 7, which is disposed on the XYZ direction movement assembly.

9. The machine according to claim 8, wherein the camera module and the line scanning module are arranged symmetrically and inclined to the vertical direction.

10. The machine according to claim 8, wherein the machine comprises a carrying platform, and the carrying platform is a marble platform.