Display module detection device

Abstract

The present application relates to a display module detection device, which includes a mounting frame and a lens module, a chromaticity detection module, a defect detection module and a filter module, all of which are arranged on the mounting frame; wherein the lens module is used to photograph a workpiece to be measured, and the chromaticity detection module and the defect detection module are both used to receive the image acquired by the lens module; the filter module can slide between a first position and a second position, and when the filter module slides to the first position, the filter module is located between the lens module and the chromaticity detection module. The display module detection device provided by the present application, when detecting the chromaticity deviation of the workpiece to be measured, the filter module slides to the first position to obtain the specific imaging color brightness of the workpiece to be measured, and the chromaticity detection module and the defect detection module are integrated, so that the chromaticity deviation and surface defects of the workpiece to be measured can be detected at the same time, thereby improving the detection efficiency of the workpiece to be measured and reducing the detection cost of the workpiece to be measured.

Description

Technical Field

[0001] The present application relates to the field of optical detection technology, and in particular to a display module detection device. Background Art

[0002] With the rapid development of optical technology, the technology and product application scale of display devices have grown rapidly. The display technology has been continuously iteratively developed from LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), Mini LED (Mini Light Emitting Diode), and Micro LED (Micro Light Emitting Diode Display), which has put forward higher requirements for the performance and defect testing of display panels.

[0003] At present, in the process of performance and defect testing of display panels, a colorimeter is usually used to detect the color deviation of the display panel based on the imaging principle, and a camera is used to detect the uneven brightness (Mura defect) of the display panel. However, the detection of the above display panels requires the use of a variety of detection instruments, which seriously affects the detection efficiency of the display panel and increases the detection cost of the display panel. Summary of the invention

[0004] Based on this, it is necessary to provide a display module detection device to address the problems of low detection efficiency and high detection cost of existing display panels.

[0005] A display module detection device, comprising a mounting frame and a lens module, a chromaticity detection module, a defect detection module and a filter module all arranged on the mounting frame;

[0006] The lens module is used to photograph the workpiece to be tested, and the chromaticity detection module and the defect detection module are both used to receive the image acquired by the lens module;

[0007] The filter module can slide between a first position and a second position. When the filter module slides to the first position, the filter module is located between the lens module and the chromaticity detection module.

[0008] In one embodiment, when the filter module moves to the first position, the filter module is located between the lens module and the defect detection module, and when the filter module moves to the second position, the filter module avoids the chromaticity detection module and the defect detection module.

[0009] In one embodiment, the filter module includes a first driving member, a slide rail and a filter member, the slide rail is disposed on the mounting frame, the filter member is slidably disposed on the slide rail and is transmission-connected to the first driving member.

[0010] In one embodiment, the filter module also includes a slide, which is slidably disposed on the slide rail and is transmission-connected to the first driving member. The slide has at least three protruding bosses, and a plurality of the bosses are spaced apart on the slide, and the filter element is bonded to the plurality of the bosses.

[0011] In one embodiment, the colorimetry detection module includes a second driving member, a connecting arm, a reflector, an optical fiber and a spectrometer. The reflector is arranged on the second driving member via the connecting arm. The reflector can move between a third position and a fourth position. The optical fiber is used to receive the light beam reflected by the reflector and is connected to the spectrometer. When the reflector is rotated to the third position, the reflector can reflect the light beam in the image acquired by the lens module to the optical fiber. When the reflector is rotated to the fourth position, the reflector avoids the lens module.

[0012] In one embodiment, the defect detection module includes an upper shell, a lower shell, a camera module and a refrigeration component. A chamber for accommodating the camera module and the refrigeration component is formed inside the upper shell and the lower shell, and a first seal is provided at the connection between the upper shell and the lower shell. The lower shell is set on the mounting frame.

[0013] In one embodiment, the defect detection module also includes a fixing seat, a fine-adjustment member and an adapter. The fixing seat is arranged on the mounting frame, the lower shell and the fine-adjustment member are both arranged on the fixing seat, the fine-adjustment member is used to adjust the horizontality of the lower shell relative to the fixing seat, and the adapter is communicatively connected to the camera module.

[0014] In one embodiment, the display module detection device also includes a transmission assembly, the lens module is telescopically disposed on the mounting frame, the transmission assembly includes a first gear and a plurality of second gears, the plurality of second gears are simultaneously engaged with the same tooth groove of the first gear, and the installation directions of two adjacent second gears are opposite, the first gear is fixed to the lens module, and during the rotation of the first gear, the first gear can drive the lens module to extend and retract relative to the mounting frame.

[0015] In one of the embodiments, the display module detection device further includes a heat dissipation module, which is disposed on the mounting frame and close to the defect detection module, and the heat dissipation module includes a heat sink and a heat dissipation fan.

[0016] In one embodiment, the mounting frame includes an upper frame, a lower frame and a sealed cavity, the sealed cavity is connected between the upper frame and the lower frame, and a second sealing member is provided at the connection between the upper frame and the lower frame, and the sealed cavity is used to accommodate the colorimetry detection module, the defect detection module and the filter module.

[0017] In the above-mentioned display module detection device, the lens module shoots the workpiece to be measured (such as a display module), and the chromaticity detection module receives the image obtained by the lens module to obtain the imaging display brightness of the workpiece to be measured, and detects the chromaticity deviation of the workpiece to be measured. The defect detection module receives the image obtained by the lens module to obtain the surface defects of the workpiece to be measured. The display module detection device provided by the present application, when detecting the chromaticity deviation of the workpiece to be measured, the filter module slides to the first position to obtain the specific imaging color brightness of the workpiece to be measured, and the chromaticity detection module and the defect detection module are integrated, and the chromaticity deviation and surface defects of the workpiece to be measured can be detected at the same time, thereby improving the detection efficiency of the workpiece to be measured and reducing the detection cost of the workpiece to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the display module detection device provided in some embodiments.

[0019] Figure 2 It is a schematic diagram of the structure of the filter module provided in some embodiments.

[0020] Figure 3 It is a schematic diagram of the structure of the chromaticity detection module provided in some embodiments.

[0021] Figure 4 It is a schematic diagram of the structure of the chromaticity detection module provided in some embodiments.

[0022] Figure 5 It is a schematic diagram of the structure of the defect detection module provided in some embodiments.

[0023] Figure 6 It is a schematic diagram of the structure of the transmission assembly provided in some embodiments.

[0024] Figure 7 for Figure 6 A partial enlarged view of area A.

[0025] Figure 8 It is a schematic diagram of the structure in which the first gear provided in some embodiments rotates clockwise.

[0026] Fig. 9 for Figure 8 A partial enlarged view of area B in the middle.

[0027] Fig.10This is a schematic diagram of the structure in which the first gear provided in some embodiments rotates counterclockwise.

[0028] Fig.11 for Fig.10 A partial enlarged view of the middle C area.

[0029] Fig.12 It is a schematic diagram of the structure of the display module detection device provided in some embodiments.

[0030] Reference numerals:

[0031] 100. Display module detection device;

[0032] 110. Mounting frame; 111. Upper frame; 112. Lower frame; 113. Sealed cavity; 120. Lens module; 130. Chroma detection module; 131. Second drive member; 132. Connecting arm; 133. Reflector; 134. Optical fiber; 135. Relay lens; 136. Light shield; 140. Defect detection module; 141. Upper shell; 142. Lower shell; 143. Fixed seat; 144. Fine adjustment member; 145. Adapter; 150. Filter module; 151. First drive member; 152. Slide rail; 153. Filter member; 154. Slide; 160. Transmission assembly; 161. First gear; 162. Second gear; 163. Third drive member; 164. Transmission shaft; 170. Heat dissipation module; 171. Heat sink; 172. Cooling fan. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] The technical solution provided by the embodiments of the present application is described below in conjunction with the accompanying drawings.

[0040] See also Figure 1As shown, the present application provides a display module detection device 100, which includes a mounting frame 110, a lens module 120, a chromaticity detection module 130, a defect detection module 140 and a filter module 150. The lens module 120, the chromaticity detection module 130, the defect detection module 140 and the filter module 150 are all arranged on the mounting frame 110. The display module detection device 100 is used to detect the chromaticity deviation and surface defects of the workpiece to be tested (such as a display module).

[0041] The lens module 120 is used to photograph the workpiece to be measured. For example, the surface to be measured of the workpiece to be measured is facing the lens module 120, and the image of the workpiece to be measured is photographed by the lens module 120. The chromaticity detection module 130 is used to receive the image obtained by the lens module 120 to obtain the imaging display brightness of the workpiece to be measured, detect the chromaticity deviation of the workpiece to be measured, and when there is a deviation between the imaging display brightness of the workpiece to be measured and the color brightness seen by the human eye, the imaging display brightness of the workpiece to be measured can be adjusted in time to adjust the imaging display brightness of the workpiece to be measured to be closer to the color brightness observed by the human eye. The defect detection module 140 is used to receive the image obtained by the lens module 120 to obtain the surface defects of the workpiece to be measured. For example, when the brightness non-uniformity of the workpiece to be measured is detected, when the defect detection module 140 detects that the workpiece to be measured has a surface defect of uneven brightness, the Mura problem of the workpiece to be measured can be eliminated in time through the Demura compensation technology.

[0042] The filter module 150 can slide between a first position and a second position. When the filter module 150 slides to the first position, the filter module 150 is located between the lens module 120 and the chromaticity detection module 130. The filter module 150 transmits a light beam of a specific color to the chromaticity detection module 130 to obtain a specific imaging color brightness of the workpiece being measured.

[0043] The display module detection device 100 integrates the chromaticity detection module 130 and the defect detection module 140. The display module detection device 100 can detect the chromaticity deviation and surface defects of the workpiece at the same time, thereby improving the detection efficiency of the workpiece and reducing the detection cost of the workpiece.

[0044] Traditionally, the filter module is moved between the lens module and the color detection module by rotating the wheel. During the rotation of the filter module, it is difficult to ensure the horizontality between the filter module and the lens module due to the large rotation radius. In addition, the wheel is driven by a belt. During the long-term rotation, the belt is prone to produce dandruff, dust, etc., which pollutes the display module detection device. Based on this, in one embodiment, refer to Figure 1 and Figure 2As shown, when the filter module 150 moves to the first position, the filter module 150 is located between the lens module 120 and the defect detection module 140, and the filter module 150 can transmit an image of a specific color to the defect detection module 140 to obtain a specific imaging image of the workpiece being tested. When the filter module 150 moves to the second position, the filter module 150 avoids the chromaticity detection module 130 and the defect detection module 140. Exemplarily, the first position is the working position of the filter module 150, and the second position is the initial position of the filter module 150. When the filter module 150 needs to perform attenuation filtering on the light beam received by the chromaticity detection module 130, or needs to perform attenuation filtering on the image received by the defect detection module 140, the filter module 150 slides to the first position. When the filter module 150 does not need to perform attenuation filtering on the light beam received by the chromaticity detection module 130, or does not need to perform attenuation filtering on the image received by the defect detection module 140, the filter module 150 slides to the second position for reset.

[0045] Further, see Figure 1 and Figure 2 As shown, the filter module 150 includes a first driving member 151, a slide rail 152 and a filter 153. The slide rail 152 is arranged on the mounting frame 110, and the filter 153 is slidably arranged on the slide rail 152, and the filter 153 is transmission-connected with the first driving member 151. Exemplarily, the slide rail 152 extends from the first position toward the second position. When the filter 153 needs to slide between the first position and the second position, the first driving member 151 outputs power to the filter 153, and the filter 153 can move to the first position to filter the light beam or image, or move to the second position to perform a reset avoidance operation. Among them, the first driving member 151 can be a driving motor, a driving cylinder or other components capable of outputting power. The specific component type of the first driving member 151 is not limited by this application.

[0046] In this way, the slide rail 152 can ensure the stability of the filter 153 during the sliding process to ensure the horizontality between the filter 153 and the lens module 120, and the filter 153 slides on the slide rail 152 for a long time, and the filter 153 and the slide rail 152 will not generate debris, dust and other impurities, thereby avoiding the adverse phenomenon of contamination of the display module detection device 100.

[0047] If the filter 153 is placed on a supporting plane, due to process errors, the supporting plane may have a slight flatness error, resulting in the filter 153 not being able to be placed completely horizontally, and it is difficult to ensure the horizontality between the filter module 150 and the lens module 120. Figure 1 and Figure 2As shown, the filter module 150 further includes a slide 154, which is slidably disposed on the slide rail 152, and the slide 154 is transmission-connected with the first driving member 151. The slide 154 is protrudingly provided with at least three bosses (not shown in the figure), and preferably, the plurality of bosses are integrally formed on the slide 154 by injection molding, extrusion, etc., so as to simplify the molding process of arranging the plurality of bosses on the slide 154. The plurality of bosses are distributed on the slide 154 at intervals, and the filter 153 is bonded to the plurality of bosses by optical glue, and the filter 153 is indirectly slidably disposed on the slide rail 152 by the slide 154. In this way, since the filter 153 is disposed on the plurality of bosses, it is only necessary to ensure that the horizontal heights of the plurality of bosses and the bonding surface of the filter 153 are consistent, which can improve the horizontal reliability of the filter 153 placed on the slide 154, so as to ensure the horizontality between the filter 153 and the lens module 120.

[0048] In one embodiment, refer to Figure 1 , Figure 3 and Figure 4 As shown, the chromaticity detection module 130 includes a second driving member 131, a connecting arm 132, a reflector 133, an optical fiber 134 and a spectrometer (not shown in the figure). The reflector 133 is arranged on the second driving member 131 through the connecting arm 132, and the reflector 133 can move between the third position and the fourth position. The power is output to the connecting arm 132 through the second driving member 131, and the connecting arm 132 moves and drives the reflector 133 to move between the third position and the fourth position. Among them, the second driving member 131 can be a driving motor, a driving cylinder or other elements that can output power. The optical fiber 134 is used to receive the light beam reflected by the reflector 133, and the optical fiber 134 is connected to the spectrometer, and when the reflector 133 rotates to the third position, the reflector 133 can reflect the light beam of the lens module 120 to the optical fiber 134, and when the reflector 133 rotates to the fourth position, the reflector 133 avoids the lens module 120. For example, refer to Figure 1 As shown, the chromaticity detection module 130 is located between the lens module 120 and the defect detection module 140. When the chromaticity deviation detection of the workpiece to be measured is required, the reflector 133 moves to the third position to reflect the light beam of the workpiece to be measured obtained by the lens module 120 into the optical fiber 134 through the reflector 133. The optical fiber 134 transmits the light beam to the spectrometer, so that the light beam of the workpiece to be measured obtained by the lens module 120 is transmitted to the spectrometer according to the preset path to perform the chromaticity deviation detection of the workpiece to be measured. When the chromaticity deviation detection of the workpiece to be measured is completed, or when the surface defect detection of the workpiece to be measured is required, the reflector 133 moves to the fourth position to avoid the lens module 120 and avoid interference with the detection of the defect detection module 140.

[0049] Further, see Figure 1 , Figure 3 and Figure 4 As shown, the chromaticity detection module 130 also includes a relay lens 135 and a light shield 136. The relay lens 135 is arranged on the mounting frame 110. The relay lens 135 is connected to the optical fiber 134, and the relay lens 135 can receive the light beam reflected by the reflector 133, so as to transmit the light beam reflected by the reflector 133 to the optical fiber 134 through the relay lens 135. Through the cooperation of the reflector 133, the relay lens 135, and the optical fiber 134, the light beam of the workpiece to be measured obtained by the lens module 120 can be transmitted to the spectrometer according to the preset path, and the loss of the light beam during the transmission process can be avoided. The light shield 136 is arranged on the outside of the relay lens 135 to prevent the relay lens 135 from leaking light, and further avoid the loss of the light beam during the transmission process.

[0050] In one embodiment, refer to Figure 1 and Figure 5 As shown, the defect detection module 140 includes an upper shell 141, a lower shell 142, a camera module (not shown in the figure) and a refrigeration component (not shown in the figure). The upper shell 141 and the lower shell 142 are internally formed with a chamber for accommodating the camera module and the refrigeration component. The camera module can receive the image obtained by the lens module 120 to obtain the surface defects of the workpiece being measured. A first sealing component (not shown in the figure) is provided at the connection between the upper shell 141 and the lower shell 142. Exemplarily, the first sealing component is a sealing strip. A sealing groove is provided in the connection area of ​​the upper shell 141 close to the lower shell 142 and / or the connection area of ​​the lower shell 142 close to the upper shell 141. The sealing strip is pressed into the sealing groove to seal the chamber to ensure the stability of the working environment of the camera module and the refrigeration component. The refrigeration component can ensure that the temperature inside the chamber is in a relatively low temperature environment to avoid the camera module from being damaged or unable to work due to overheating during long-term operation.

[0051] It should be noted that, in order to improve the sealing performance of the internal environment of the chamber, the groove depth of the sealing groove can be set to be small, so that the first sealing member can be deformed to a greater extent during the process of pressing the first sealing member between the upper shell 141 and the lower shell 142, so as to increase the sealing reliability of the internal environment of the chamber. In addition, a sealant can be applied to the connection between the upper shell 141 and the lower shell 142 to further increase the sealing reliability of the internal environment of the chamber.

[0052] Further, see Figure 1 and Figure 5As shown, the defect detection module 140 also includes a fixing seat 143, a fine adjustment member 144 and an adapter 145. The fixing seat 143 is arranged on the mounting frame 110 by screwing, riveting, etc., the lower shell 142 and the fine adjustment member 144 are both arranged on the fixing seat 143, and the fine adjustment member 144 is used to adjust the horizontality of the lower shell 142 relative to the fixing seat 143. Exemplarily, the fine adjustment member 144 is a micrometer head, the camera module is fixed to the lower shell 142, the lower shell 142 is provided with a plurality of protrusions on the surface that matches the fixing seat 143, the fixing seat 143 is provided with a plurality of grooves on the surface that matches the lower shell 142, the plurality of protrusions correspond to the plurality of grooves, the position of the protrusions inserted into the grooves is adjusted by the fine adjustment member 144 to adjust the horizontality of the camera module, and ensure the horizontality between the camera module and the lens module 120, the image of the workpiece to be measured obtained by the lens module 120 can be transmitted to the camera module in a high-quality form, and the reliability of the camera module for the surface defects of the workpiece to be measured is improved, and the matching processing accuracy between the lower shell 142 and the fixing seat 143 is greatly reduced by adjusting the matching of the protrusions and the grooves. The adapter 145 is connected to the camera module for communication, and if the adapter 145 is a transfer PCB board, the image obtained by the camera module can be transmitted to the outside through the adapter 145, so as to obtain the surface defects of the workpiece to be measured.

[0053] In one embodiment, refer to Figure 1 , Figure 6 and Figure 7As shown, the display module detection device 100 also includes a transmission assembly 160. The lens module 120 is telescopically arranged on the mounting frame 110 to adjust the focal position of the lens module 120 relative to the workpiece to be measured, so as to ensure the imaging quality of each point of the workpiece to be measured by the lens module 120. The transmission assembly 160 includes a first gear 161 and a plurality of second gears 162, and the plurality of second gears 162 are simultaneously engaged with the same tooth groove of the first gear 161, and the installation directions of two adjacent second gears 162 are opposite. For example, when there are two second gears 162, one of the second gears 162 is installed in a clockwise direction, and the other second gear 162 is installed in a counterclockwise direction; for another example, when there are three second gears 162, the three second gears 162 are sequentially stacked in the tooth thickness direction, the second gear 162 in the middle position is installed in a clockwise direction, and the second gears 162 in the two side positions are installed in a counterclockwise direction, or the second gear 162 in the middle position is installed in a counterclockwise direction, and the second gears 162 in the two side positions are installed in a clockwise direction. The first gear 161 is fixed to the lens module 120, and during the rotation of the first gear 161, the first gear 161 can drive the lens module 120 to expand and contract relative to the fixed seat 143. Specifically, when the lens module 120 is performing multi-point imaging on the workpiece to be measured, since there will be deviations at each test point, the rotation of the first gear 161 can drive the lens module 120 to expand and contract relative to the fixed seat 143 to adjust the distance between the lens module 120 and the workpiece to be measured, and then adjust the focal position of the lens module 120 to ensure the imaging quality of each point of the workpiece to be measured by the lens module 120.

[0054] Normally, if the focusing of the lens module 120 is achieved by the mutual engagement of a first gear 161 and a second gear 162, due to the large gear backlash between the first gear 161 and the second gear 162, when the power source outputs power once, the second gear 162 drives the first gear 161 to rotate, causing the first gear 161 to rotate too much, and the single adjustment amount of the lens module 120 is too large, affecting the imaging quality of the lens module 120. In the above-mentioned display module detection device 100, the installation directions of two adjacent second gears 162 are opposite, and one of the second gears 162 can adjust and correct the gear backlash between the other second gear 162 and the first gear 161 during the installation process. When the two adjacent second gears 162 are simultaneously engaged with the same tooth groove of the first gear 161, the two adjacent second gears 162 can compensate for the gear backlash between them and the first gear 161, so as to adjust the meshing gap between the second gear 162 and the first gear 161 to be smaller, thereby improving the rotation adjustment accuracy of the first gear 161, so as to finely adjust the telescopic distance of the lens module 120, and further ensure the imaging quality of the lens module 120 at each point of the measured workpiece.

[0055] Among them, see Figure 1, Figure 6 and Figure 7 As shown, the transmission assembly 160 further includes a third driving member 163 and a transmission shaft 164. The transmission shaft 164 is transmission-connected to the output end of the third driving member 163, and a plurality of second gears 162 are sleeved on the transmission shaft 164 along the axial direction of the transmission shaft 164, and the plurality of second gears 162 are stacked along the tooth thickness direction to achieve the installation of the plurality of second gears 162. In this embodiment, the third driving member 163 may be a driving motor, a driving cylinder, or other components capable of outputting power. Specifically, when the third driving member 163 outputs power to the transmission shaft 164, the transmission shaft 164 rotates to drive the multiple second gears 162 to rotate synchronously, and the second gear 162 is used as a driving source to drive the first gear 161 to rotate, thereby driving the lens module 120 to extend and retract relative to the fixed seat 143 to adjust the distance between the lens module 120 and the workpiece to be measured, thereby ensuring the imaging quality of each point of the workpiece to be measured by the lens module 120, and multiple second gears 162 are arranged on the same side of the first gear 161, and the second gear 162 drives the first gear 161 to rotate unilaterally, thereby avoiding the second gear 162 from getting stuck, getting stuck, and other undesirable phenomena during the process of driving the first gear 161 to rotate.

[0056] The display module detection device mentioned above, see Figure 8 and Fig. 9 As shown, when the second gear 162 is used as a driving source to drive the first gear 161 to rotate clockwise, since the installation directions of the two adjacent second gears 162 are opposite, during the rotation of the first gear 161, the meshing backlash between the two adjacent second gears 162 and the first gear 161 compensates for each other, which can reduce the meshing gear backlash between the first gear 161 and the second gear 162. In addition, during the installation process, the preload forces of the two adjacent second gears 162 are in opposite directions, so the preload forces of the two adjacent second gears 162 offset each other, which can reduce the resistance of the second gear 162 to the first gear 161 and improve the rotation smoothness of the first gear 161. Similarly, refer to Fig.10 and Fig.11As shown, when the first gear 161 is driven counterclockwise by the second gear 162 as the driving source, since the installation directions of the two adjacent second gears 162 are opposite, during the rotation of the first gear 161, the meshing backlash between the two adjacent second gears 162 and the first gear 161 compensates for each other, which can reduce the meshing gear backlash between the first gear 161 and the second gear 162, and during the installation process, the pre-tightening force directions of the two adjacent second gears 162 are opposite, so the pre-tightening force of the two adjacent second gears 162 offsets each other, which can reduce the resistance of the second gear 162 to the first gear 161 and improve the rotation smoothness of the first gear 161. For example, if the meshing clearance between the first gear 161 and the second gear 162 is defined as d1 during the clockwise rotation of the first gear 161, and if the meshing clearance between the first gear 161 and the second gear 162 is defined as d2 during the counterclockwise rotation of the first gear 161, then d1=d2, and both d1 and d2 are smaller than the meshing clearance between the conventional first gear 161 and the second gear 162. Thus, in this embodiment, the meshing clearance between the first gear 161 and the second gear 162 is smaller, which can improve the rotation adjustment accuracy of the first gear 161, so as to finely adjust the telescopic distance of the lens module 120.

[0057] In one embodiment, refer to Figure 1 As shown, the display module detection device 100 further includes a heat dissipation module 170, which is disposed on the mounting frame 110 and is close to the defect detection module 140. Exemplarily, the heat dissipation module 170 includes a heat sink 171 and a heat dissipation fan 172. Since the display module detection device 100 generates heat during a long detection process, the heat sink 171 and the heat dissipation fan 172 can cooperate to dissipate heat from the display module detection device 100, thereby ensuring the stability of the working environment of the display module detection device 100.

[0058] Among them, since the cooling fan 172 dissipates heat for the display module detection device 100 by rotating, the cooling fan 172 will produce slight vibration during the rotation of the cooling fan 172, affecting the stable transmission of the light beam during the detection process of the chromaticity detection module 130, and the image quality obtained by the defect detection module 140 receiving the lens module 120. Based on this, a counterweight is provided on the cooling fan 172, and by adding or removing the counterweight on the cooling fan 172, it is ensured that the rotation center of gravity of the cooling fan 172 coincides with its rotation center of gravity as much as possible, so as to reduce the vibration and noise during the rotation of the cooling fan 172 by dynamic balancing, so that the lens module 120 light beam received by the lens module 120 is transmitted according to the preset path, and the image quality obtained by the defect detection module 140 receiving the lens module 120 is ensured, so as to improve the chromaticity deviation and surface defect detection accuracy of the display module detection device 100 for the workpiece under test.

[0059] In one embodiment, refer to Figure 1 and Fig.12 As shown, the mounting frame 110 includes an upper frame 111, a lower frame 112 and a sealed cavity 113. The sealed cavity 113 is connected between the upper frame 111 and the lower frame 112, and a second seal (not shown in the figure) is provided at the connection between the sealed cavity 113 and the upper frame 111 and the lower frame 112. For example, the second seal is a sealing strip, and the second seal is deformed to ensure the sealing of the mounting frame 110 through mutual extrusion between the upper frame 111, the lower frame 112 and the sealed cavity 113. The sealed cavity 113 is used to accommodate the chromaticity detection module 130, the defect detection module 140 and the filter module 150 to ensure the sealing stability of the working environment of the chromaticity detection module 130, the defect detection module 140 and the filter module 150.

[0060] It should be noted that the upper frame 111, the lower frame 112 and the sealed cavity 113 are detachably connected to facilitate the assembly of the mounting frame 110, and since the various components of the display module detection device 100 are installed on the mounting frame 110, when the various components in the display module detection device 100 fail or are damaged, it is convenient to maintain and replace the various components of the display module detection device 100, thereby reducing the use cost of the display module detection device 100.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display module detection device, characterized in that: The display module detection device includes a mounting frame and a lens module, a chromaticity detection module, a defect detection module and a filter module all arranged on the mounting frame; The lens module is used to photograph the workpiece to be tested, and the chromaticity detection module and the defect detection module are both used to receive the image acquired by the lens module; The filter module can slide between a first position and a second position. When the filter module slides to the first position, the filter module is located between the lens module and the chromaticity detection module. The colorimetry detection module comprises a reflector, an optical fiber and a spectrometer; the reflector can move between a third position and a fourth position; the optical fiber is used to receive the light beam reflected by the reflector and is connected to the spectrometer; when the reflector is rotated to the third position, the reflector can reflect the light beam in the image acquired by the lens module to the optical fiber; when the reflector is rotated to the fourth position, the reflector avoids the lens module.

2. The display module detection device according to claim 1, characterized in that: When the filter module moves to the first position, the filter module is located between the lens module and the defect detection module, and when the filter module moves to the second position, the filter module avoids the chromaticity detection module and the defect detection module.

3. The display module detection device according to claim 2, characterized in that: The filter module comprises a first driving member, a slide rail and a filter member. The slide rail is arranged on the mounting frame. The filter member is slidably arranged on the slide rail and is drivingly connected to the first driving member.

4. The display module detection device according to claim 3, characterized in that: The filter module also includes a slide, which is slidably arranged on the slide rail and is transmission-connected to the first driving member. The slide is protruding with at least three bosses, and a plurality of the bosses are spaced apart on the slide. The filter is bonded to the plurality of bosses.

5. The display module detection device according to any one of claims 3 or 4, characterized in that: The chromaticity detection module also includes a second driving member and a connecting arm, and the reflecting mirror is arranged on the second driving member through the connecting arm.

6. The display module detection device according to claim 1, characterized in that: The defect detection module includes an upper shell, a lower shell, a camera module and a refrigeration component. A chamber for accommodating the camera module and the refrigeration component is formed inside the upper shell and the lower shell, and a first sealing component is provided at the connection between the upper shell and the lower shell. The lower shell is arranged on the mounting frame.

7. The display module detection device according to claim 6, characterized in that: The defect detection module also includes a fixing seat, a fine-adjustment member and an adapter. The fixing seat is arranged on the mounting frame, the lower shell and the fine-adjustment member are both arranged on the fixing seat, the fine-adjustment member is used to adjust the horizontality of the lower shell relative to the fixing seat, and the adapter is communicatively connected to the camera module.

8. The display module detection device according to claim 1, characterized in that: The display module detection device also includes a transmission component. The lens module can be telescopically arranged on the mounting frame. The transmission component includes a first gear and multiple second gears. The multiple second gears are simultaneously engaged with the same tooth groove of the first gear, and the installation directions of two adjacent second gears are opposite. The first gear is fixed to the lens module, and during the rotation of the first gear, the first gear can drive the lens module to extend and retract relative to the mounting frame.

9. The display module detection device according to claim 1, characterized in that: The display module detection device also includes a heat dissipation module, which is arranged on the mounting frame and close to the defect detection module. The heat dissipation module includes a heat sink and a heat dissipation fan.

10. The display module detection device according to claim 1, characterized in that: The mounting frame includes an upper frame, a lower frame and a sealed cavity. The sealed cavity is connected between the upper frame and the lower frame, and a second sealing member is provided at the connection between the upper frame and the lower frame. The sealed cavity is used to accommodate the chromaticity detection module, the defect detection module and the filter module.

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