CN-121978118-A - OLED display screen defect detection production line and detection method

CN121978118ACN 121978118 ACN121978118 ACN 121978118ACN-121978118-A

Abstract

The invention relates to the technical field of visual inspection, in particular to a defect inspection production line and inspection method for an OLED display screen, which comprises a first elevator, wherein a frame is arranged on the left side of the first elevator, a conveying belt for conveying the OLED display screen is arranged on the frame, a second elevator is arranged on the left side of the frame, a first inspection box and a second inspection box which are identical in structure are symmetrically arranged in the middle of the frame, a CCD image inspection module is driven to swing along the radian of a curved surface of the curved surface display screen through a reciprocating swing mechanism, so that the curved surface display screen is conveniently and thoroughly shot, the occurrence of shooting dead angles is avoided, the accuracy of subsequent detection is improved, the reciprocating swing mechanism swings once, the reciprocating swing mechanism and a pressing mechanism are matched for use, the pressing mechanism is driven to swing synchronously, meanwhile, the curved surface display screen is shot under the pressing working condition, and the accuracy of subsequent inspection is improved.

Inventors

TANG CHUNCHAO
CHEN SHIZHOU
WU XIAOBO
LI HAIBO
ZHANG XIUPING
CHAI LIHUA

Assignees

四川雄富蕊能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20251022

Claims (10)

The OLED display screen defect detection production line comprises a first elevator (1) and is characterized in that a frame (2) is arranged on the left side of the first elevator (1), a conveying belt (3) for conveying an OLED display screen is arranged on the frame (2), a second elevator (6) is arranged on the left side of the frame (2), and a first detection box (4) and a second detection box (5) which are identical in structure are symmetrically arranged in the middle of the frame (2) in a left-right mode; Further comprises: the jacking clamping mechanisms (7) are symmetrically arranged in the middle of the frame (2) and used for clamping and fixing the OLED display screen; A pressing mechanism (9) provided inside the first detection box (4); The front and back symmetry fixed connection is at two roof (10) of the inside top surface of detection case (4), and two roof (10) bottom joint fixedly connected with electronic slide rail (11), electronic slide rail (11) bottom sliding connection have electronic slider (12), and electronic slider (12) bottom fixedly connected with curb plate (13), be provided with reciprocal swing mechanism (8) on curb plate (13), be provided with CCD image detection module (15) on reciprocal swing mechanism (8).
2. The OLED display screen defect detection production line according to claim 1, wherein the jacking clamping mechanism (7) comprises a hydraulic cylinder (71) fixedly installed on the frame (2), the output end of the hydraulic cylinder (71) is fixedly connected with a jacking plate (72), four corners of the top of the jacking plate (72) are respectively fixedly connected with a first connecting rod (73), the top of the first connecting rod (73) is fixedly connected with a supporting plate (74) for supporting an OLED display screen, the edge of the jacking plate (72) is fixedly provided with a first fixing plate (77), the top of the first fixing plate (77) is fixedly connected with an active extrusion wedge block (76), and a clamping assembly (75) is jointly arranged between the active extrusion wedge block (76) and the frame (2).
3. The OLED display screen defect detection production line according to claim 2, wherein the clamping assembly (75) comprises a limiting slide rail (754) fixedly connected to the frame (2), the limiting slide rail (754) is connected with a limiting slide block (755) in a sliding mode, the top of the limiting slide block (755) is fixedly connected with a mounting plate (753), two clamping rods (752) for centering and clamping the OLED display screen are symmetrically and fixedly connected to the top of the mounting plate (753), two driven pressed wedges (751) matched with the driving pressing wedges (76) are symmetrically arranged on one side, away from the OLED display screen, of the mounting plate (753), and a spring (756) is fixedly connected between one side, close to the OLED display screen, of the limiting slide rail (754) and the mounting plate (753).
4. The OLED display screen defect detection production line according to claim 1, wherein the reciprocating swing mechanism (8) comprises a power component (81) and a lifting adjusting component (82), the power component (81) is arranged on the side plate (13), the lifting adjusting component (82) is arranged on the power component (81), the power component (81) comprises a bearing seat fixedly connected to the bottom of the front side of the side plate (13), the top of the bearing seat is fixedly connected with a servo motor (813), the output end of the servo motor (813) is fixedly connected with a rotating disc (818), the top of the front side of the side plate (13) is rotatably provided with a rotating rod (811), the front end of the rotating rod (811) is fixedly sleeved with a swing arm (814), the front end of the swing arm (814) is fixedly provided with a triangular tooth block (812), a limit sliding groove (819) is formed in the swing arm (814), a limit pin which is slidingly connected to the edge of the rotating disc (818), the front side of the bearing seat is fixedly provided with a fixing frame (817), the top of the fixing frame (817) is rotatably connected with a connecting shaft (816), one end of the connecting shaft (816) is fixedly sleeved with a gear (815) meshed with the triangular tooth block (812).
5. The OLED display screen defect detection production line of claim 4, wherein the lifting adjusting assembly (82) comprises a swinging plate (824) fixedly arranged at the other end of the connecting shaft (816), a sliding sleeve (822) is slidably arranged on the swinging plate (824), a spring inserting rod (821) is arranged on the sliding sleeve (822), an installation arm (823) is fixedly arranged at the bottom of the front side of the sliding sleeve (822), a connecting block (826) is fixedly arranged at the bottom of the installation arm (823), a fixing ring (825) is fixedly arranged at the front side of the connecting block (826), the inner wall of the fixing ring (825) is fixedly connected with the outer wall of the CCD image detection module (15), and an arc-shaped hemispherical head (14) is fixedly arranged outside the fixing ring (825).
6. The OLED display screen defect detection production line according to claim 1, wherein the pressing mechanism (9) comprises an unlocking component (94) arranged on the right side inside a first detection box (4), a fixing rod (91) is arranged on the left side inside the first detection box (4), a limit sleeve (96) is fixedly arranged at one end of the fixing rod (91), an arc-shaped movable rod (93) penetrates through the limit sleeve (96) in a sliding mode, an automatic locking component (95) is arranged at the bottom end of the arc-shaped movable rod (93), and an extrusion component (92) is arranged between the automatic locking component (95) and the fixing rod (91).
7. The OLED display screen defect detection production line of claim 6, wherein the unlocking component (94) comprises a connecting plate (941) fixedly connected to the right side inside the first detection box (4), a U-shaped frame (942) is fixedly arranged at one end, away from the first detection box (4), of the connecting plate (941), and arc-shaped extrusion heads (943) are fixedly connected to two ends of the U-shaped frame (942) respectively.
8. The OLED display screen defect detection production line of claim 6, wherein the automatic locking assembly (95) comprises a clamping barrel (958) fixedly installed at the bottom end of an arc movable rod (93), two mounting sleeves (953) are fixedly installed on the front side and the rear side of the clamping barrel (958), a pull rod (955) is penetrated through the mounting sleeves (953) and the clamping barrel (958) in a co-moving mode, one end of the pull rod (955) located in the clamping barrel (958) is fixedly provided with an arc pressure receiving head (954), the middle part of the pull rod (955) is fixedly sleeved with a baffle plate (957), a fourth spring (956) is sleeved in the middle part of the pull rod (955), the fourth spring (956) is arranged between the baffle plate (957) and the inner side wall of the mounting sleeve (953), one end of the pull rod (955) away from the arc pressure receiving head (954) is fixedly provided with a second connecting rod (951), and one end of the second connecting rod (951) is fixedly provided with a squeezing plate (952).
9. The OLED display screen defect detection production line of claim 8, wherein the extrusion assembly (92) comprises a second fixing plate (921) fixedly arranged on the outer wall of the clamping barrel (958), a plurality of telescopic rods (924) are movably penetrated through the second fixing plate (921), one ends, far away from the second fixing plate (921), of the telescopic rods (924) are fixedly provided with fixing seats, the extrusion wheel (922) is rotatably arranged on the fixing seats, a second spring (923) is sleeved outside the telescopic rods (924), the second spring (923) is arranged between the fixing seats and the second fixing plate (921), a second hinging seat (927) is hinged to the left side of the top of the clamping barrel (958), a first hinging seat (925) is hinged to the bottom of the fixing rod (91), and a third spring (926) is fixedly arranged between the first hinging seat (925) and the second hinging seat (927).
An OLED display defect detection method, based on the OLED display defect detection line of any one of claims 1-9, comprising the steps of: S1, feeding a curved display screen, namely conveying and feeding the curved display screen by using a rack (2) and a conveying belt (3) on the rack; S2, jacking and clamping, namely jacking the curved display screen by using a jacking clamping mechanism (7) at the moment after feeding the material into the first detection box (4), and synchronously centering, clamping and fixing the curved display screen in the jacking process; s3, performing primary swing shooting, namely driving a CCD image detection module (15) to perform primary swing shooting along the curve of the curved display screen by using a reciprocating swing mechanism (8) after centering and clamping; S4, after primary swing shooting, synchronously shooting the curved display screen in the process of pressing the curved display screen under the matched use of the reciprocating swing mechanism (8) and the pressing mechanism (9), shooting the curved display screen again under the pressing working condition, transmitting the shot image into a database, comparing the shot image with the qualified curved display screen image in the database, if no scratch, foreign matters, white spots and light leakage phenomenon occur, indicating that the curved display screen is qualified, and if the phenomenon occurs, indicating that the display screen is unqualified; s5, automatic unlocking and resetting, namely automatically resetting the pressing mechanism (9) after detection is completed.

Description

OLED display screen defect detection production line and detection method Technical Field The invention belongs to the technical field of visual inspection, and particularly relates to an OLED display screen defect inspection production line and an OLED display screen defect inspection method. Background The OLED is an advanced self-luminous display technology, and by virtue of its excellent image quality and unique physical characteristics, the OLED display has become a mainstream choice of high-end display products such as smart phones, televisions, wearable devices, etc., and the OLED display includes multiple types such as curved surface display, straight surface display, and flexible display, especially the curved surface OLED display is already the main display of high-end electrical appliances, and the curved surface OLED display needs to be detected before leaving the factory, and the following problems exist in the detection process: 1. When the curved surface OLED display screen detects defects, the CCD image acquisition camera is used for image acquisition, the acquired images are compared and analyzed with the images of qualified products in the database, so that the defects of the display screen are obtained, however, because the display screen is curved, the CCD image acquisition camera is usually perpendicular to the display screen for shooting when acquiring the images, an included angle exists between the CCD image acquisition camera and the edge of the curved surface, the accuracy of shooting images is difficult to guarantee, and the accuracy of subsequent detection is reduced. 2. When detecting, compared with a traditional straight-face screen, the curved-face screen needs to be pressed for detection, whether the water ripple defect and the pressing injury exist in the pressed state or not is detected, the curved-face OLED display screen is in a curved-face state, the traditional top downward pressing mode is easy to cause display screen damage, the pressing angle is not perpendicular to the curved-face OLED display screen, namely the side face of the pressing head is contacted with the display screen, and the use condition of the display screen in the pressed state is difficult to thoroughly simulate. Disclosure of Invention The invention aims to solve the problems and provide an OLED display screen defect detection production line and an OLED display screen defect detection method which are simple in structure and reasonable in design. The invention realizes the above purpose through the following technical scheme: the OLED display screen defect detection production line comprises a first elevator, wherein a frame is arranged on the left side of the first elevator, a conveying belt for conveying an OLED display screen is arranged on the frame, a second elevator is arranged on the left side of the frame, and a first detection box and a second detection box which are identical in structure are symmetrically arranged in the middle of the frame; Further comprises: The jacking clamping mechanisms are symmetrically arranged in the middle of the frame and used for clamping and fixing the OLED display screen; The pressing mechanism is arranged in the first detection box; The front-back symmetry fixed connection is at two roof of the inside top surface of detection case, and two roof bottoms are the electronic slide rail of fixedly connected with jointly, and electronic slider bottom sliding connection has electronic slider, and electronic slider bottom fixedly connected with curb plate is provided with reciprocal swing mechanism on the curb plate, is provided with CCD image detection module on the reciprocal swing mechanism. Preferably, the jacking clamping mechanism comprises a hydraulic cylinder fixedly mounted on the frame, the output end of the hydraulic cylinder is fixedly connected with a jacking plate, four corners of the top of the jacking plate are respectively fixedly connected with a first connecting rod, the top of the first connecting rod is fixedly connected with a supporting plate for supporting the OLED display screen, the edge of the jacking plate is fixedly mounted with a first fixing plate, the top of the first fixing plate is fixedly connected with an active extrusion wedge block, and a clamping assembly is jointly arranged between the active extrusion wedge block and the frame. Preferably, the clamping assembly comprises a limiting sliding rail fixedly connected to the frame, the limiting sliding rail is slidably connected with a limiting sliding block, the top of the limiting sliding block is fixedly connected with a mounting plate, two clamping rods for centering and clamping the OLED display screen are symmetrically and fixedly connected to the top of the mounting plate, two driven compression wedges matched with the driving compression wedges are symmetrically arranged on one side, away from the OLED display screen, of the mounting plate, and a spring is fixedly connect