A probe automatic alignment method and device based on OLED display panel gamma production line

Abstract

The present invention discloses a method and device for automatic probe alignment based on an OLED display panel gamma production line, comprising the following steps: lighting the OLED display panel; wherein the brightness of the area where the point to be positioned on the OLED display panel is located is greater than that of the rest of the area, and the point to be positioned is the location on the OLED display panel that requires gamma adjustment; sequentially moving the optical probe to a number of set coordinate positions, and after the optical probe reaches the set coordinate position, collecting the brightness value of the position of the OLED display panel it faces; the set number of coordinate positions covers the area where the point to be positioned is located; comparing the magnitudes of all collected brightness values; and determining the coordinate position corresponding to the maximum brightness value as the coordinate of the point to be positioned. The present invention can achieve automated and high-precision positioning of the probe.

Description

Technical Field

[0001] The present invention belongs to the technical field of OLED display panels, and in particular relates to a method and device for automatic probe alignment based on an OLED display panel gamma production line. Background Art

[0002] With the development of OLED (Organic Light-Emitting Diodes) display panel related technologies, the market for OLED display panels has expanded rapidly. The expansion of the market and the increase in user demand have led to the emergence of various OLED screen display technologies, including the birth of hidden camera screens. In order to better make the display effect of this type of display panel conform to the human eye visual curve, it is necessary to perform gamma correction on multiple points of the screen (including the hidden camera area) in the factory. The gamma correction process in the OLED display panel production line requires multiple moves of the optical probe to specific points on the display panel, and in the production line, the coordinates of the optical probe that has been moved to the precise points multiple times need to be saved.

[0003] The existing technology generally adopts a multi-person collaborative approach when collecting point coordinates: one person A controls the display panel to light up, and the lit image is a general commonly used image; another person B controls the PLC to move the optical probe; another person C observes the probe position with the naked eye. When person C observes that the probe moves to the expected position, he notifies person B to save the coordinate point value.

[0004] The currently commonly used method for collecting point coordinates requires collaboration among multiple people from different departments, which consumes a lot of manpower. In addition, the coordinate positions are observed by the naked eye, and the probe movement accuracy cannot be accurately controlled. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology and to provide a method and device for automatic probe alignment based on an OLED display panel gamma production line, which can realize automatic and high-precision positioning of the probe position.

[0006] The technical solution adopted by the present invention is: a probe automatic alignment method based on an OLED display panel gamma production line, comprising the following steps:

[0007] Lighting up the OLED display panel, the brightness of the point to be located on the OLED display panel is higher than the brightness of the rest of the OLED display panel; the point is used to indicate the area of ​​the OLED display panel that requires gamma adjustment;

[0008] The optical probe is moved to a plurality of predetermined coordinate positions in sequence. After the optical probe reaches the predetermined coordinate position, the brightness value of the position of the OLED display panel facing the optical probe is collected. The predetermined coordinate positions cover the area where the point is located.

[0009] Compare the sizes of all collected brightness values;

[0010] Determine the coordinate position corresponding to the maximum brightness value as the coordinate position the optical probe should reach when performing gamma adjustment on that point.

[0011] In the above technical solution, the process of determining the coordinate position corresponding to the maximum brightness value as the coordinate position that the optical probe should reach when performing gamma adjustment on the point to be located includes: moving the optical probe to the coordinate position corresponding to the maximum brightness value, and the optical probe again collecting the brightness value of the OLED display panel corresponding to the coordinate position; comparing the brightness value collected this time with the maximum brightness value;

[0012] If the brightness value collected this time is within the set floating range centered on the maximum brightness value, the coordinate position corresponding to the maximum brightness value is output as the coordinate position that the optical probe should reach when gamma adjustment is performed on that point;

[0013] If the brightness value collected this time is outside the set floating range centered on the maximum brightness value, the optical probe will be moved again to the set coordinate positions and the subsequent steps will be executed again.

[0014] In the above technical solution, the process of lighting up the OLED display panel includes: customizing a dot map based on the parameter information of the OLED display panel; the dot map is used to characterize the size and resolution of the OLED display panel and the relative position and size of the area requiring gamma adjustment on the OLED display panel; and the OLED display panel loads and lights up the display dot map.

[0015] In the above technical solution, the point map is marked with several areas on the OLED display panel that require gamma adjustment; in the process of lighting up the OLED display panel, only one of the areas is selected as the point to be positioned; after determining the coordinate position that the optical probe should reach when gamma adjustment is performed on the point to be positioned, the next area is selected as the point to be positioned and all steps are executed again.

[0016] In the above technical solution, the process of marking the area requiring gamma adjustment on the dot map includes: setting the center position coordinates of the area requiring gamma adjustment on the OLED display panel on the dot map, and marking the area covered by a circle formed with the center coordinates as the center and a set radius as the area requiring gamma adjustment on the OLED display panel.

[0017] In the above technical solution, the area where the point to be located is displayed on the OLED display panel is displayed in white, and the rest of the area is displayed in black.

[0018] In the above technical solution, the process of moving the optical probe to several set coordinate positions in sequence includes: after moving the optical probe to the area of ​​the point to be located on the OLED display panel, recording the coordinate value of the optical probe as the initial coordinate; with the initial coordinate as the center, generating a coordinate matrix according to the set step distance; the optical probe automatically moves to the coordinate position corresponding to the coordinate matrix in sequence and collects the brightness value of the position of the OLED display panel it faces.

[0019] In the above technical solution, the process of moving the optical probe to the area of ​​the OLED display panel where the point to be located is located includes: manually moving the optical probe to align it with the brightest point observed by the naked eye in the area with higher brightness of the OLED display panel.

[0020] The present invention also provides an optical probe automatic alignment device based on an OLED display panel gamma production line, comprising an optical probe, a PG module, a host computer and a PLC;

[0021] The PG module is used to generate a point map, which is used to represent the relative positions of the points to be positioned on the OLED display panel. The points to be positioned are areas on the OLED display panel that require gamma adjustment.

[0022] The PG module sends the point map to the OLED display panel, the OLED display panel lights up and displays the point map, and the brightness of the point to be located on the OLED display panel is greater than that of the rest of the area;

[0023] The host computer generates a drive command based on the bitmap sent by the PG module and sends it to the PLC;

[0024] The PLC drives the optical probe to reach several set coordinate positions in the area where the point to be located is located according to the driving command sent by the host computer, and synchronously collects the brightness value of the position of the OLED display panel it faces and feeds it back to the host computer;

[0025] The host computer outputs the coordinate position corresponding to the maximum brightness value, which is used as the coordinate position that the optical probe should reach when gamma adjustment is performed on this point.

[0026] In the above technical solution, after the optical probe is manually moved to the brightest spot in the area of ​​the point to be located on the OLED display panel observed by the naked eye, the PLC records the coordinate value of the optical probe and feeds it back to the host computer; the host computer uses the coordinate value as the initial coordinate; the host computer uses the initial coordinate as the center and generates a coordinate matrix as the set coordinate position according to the set step distance; the PLC drives the optical probe to move to the set coordinate position in sequence and collects the brightness value of the position of the OLED display panel it faces.

[0027] The present invention has the beneficial effect of continuously and automatically positioning multiple optical probe measurement points that need to be positioned before or during the gamma adjustment process of the OLED display panel using a fully automated method, eliminating the need for multiple people to assist in control and setup. This saves manpower and improves efficiency. The point coordinates output by the present invention are calculated using data collected by the optical probe, and the positioning accuracy can be improved to (0.5mm), which can effectively improve the gamma adjustment accuracy and indirectly increase the production yield of OLED display panels.

[0028] After initially obtaining the coordinate values ​​of the points to be measured, the present invention performs data verification and re-collects and analyzes coordinate values ​​that do not meet the standards, further enhancing the positioning accuracy of the present invention. The present invention illuminates the OLED display panel to display a point map that clearly identifies the area of ​​the points to be measured with distinct color distinctions, effectively and clearly representing the area of ​​the points to be located. In the point map used by the present invention, a circle with a set radius, centered at the manually marked coordinate position, is formed to reflect the area where the points to be located are located, providing room for error tolerance for subsequent data collection. The present invention combines the coordinate information of the point map with the coordinate system built into the PLC to accurately calculate the coordinate values ​​of the points, further enhancing positioning accuracy. The present invention only displays one point at a time, avoiding unnecessary errors in the positioning process. The present invention proposes a method for determining the position of a point based on the brightness value collected by an optical probe. This method uses a unified method based on mathematical and physical relationships to determine the point position, effectively reducing errors caused by manual intervention. By collecting the brightness value corresponding to each position in the coordinate matrix, the present invention effectively covers the entire area of ​​the point, ensuring that the final collected data contains the brightness data of the points to be located. At the same time, the coordinate matrix can also eliminate the influence of manual intervention in the initial use of the method. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the process of the present invention;

[0030] Figure 2 A schematic diagram of the device of the present invention;

[0031] Figure 3 A diagram showing the process of using the device of the present invention;

[0032] Figure 4 FIG. a is a schematic diagram of the lighting position of this specific embodiment;

[0033] Figure 5 This is a schematic diagram b of the lighting position of this specific implementation example.

[0034] 1-lit OLED display panel, 2-Area A, 3-Area B. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation to the present invention.

[0036] like Figure 1 As shown, the present invention provides a probe automatic alignment method based on an OLED display panel gamma production line, comprising the following steps:

[0037] S1, lighting up the OLED display panel; wherein the brightness of the area where the point to be located on the OLED display panel is located is greater than that of the rest of the area, and the point to be located is used to indicate the location on the OLED display panel where gamma adjustment is required;

[0038] S2, sequentially moving the optical probe to a plurality of predetermined coordinate positions, and collecting the brightness value of the position of the OLED display panel facing the optical probe after the optical probe reaches the predetermined coordinate position; the predetermined plurality of coordinate positions cover the area where the point to be located is located;

[0039] S3, compare the sizes of all the collected brightness values;

[0040] S4, determining the coordinate position corresponding to the maximum brightness value as the coordinate position that the optical probe should reach when performing gamma adjustment on this point.

[0041] Specifically, the coordinate position finally determined is the coordinate position that the center of the optical probe should reach when the corresponding point is gamma-adjusted, and is the optimal alignment position when the optical probe is gamma-adjusted.

[0042] like Figure 2 As shown, the present invention provides a device for realizing a probe automatic alignment method based on an OLED display panel gamma production line, comprising: an optical probe, a PG module (signal generator module), a host computer and a PLC;

[0043] The PG module is used to generate a point map, which is used to represent the positions of the points to be positioned on the OLED display panel, and the points to be positioned are the positions on the OLED display panel that require gamma adjustment;

[0044] The PG module sends the point map to the OLED display panel, the OLED display panel lights up and displays the point map, and the brightness of the area where the point to be located on the OLED display panel is greater than that of the rest of the area;

[0045] The host computer generates a drive command based on the bitmap sent by the PG module and sends it to the PLC;

[0046] The PLC drives the optical probe to reach several set coordinate positions in the area where the point to be located is located according to the driving command sent by the host computer, and synchronously collects the brightness value of the position of the OLED display panel it faces and feeds it back to the host computer;

[0047] The host computer outputs the coordinate position corresponding to the maximum brightness value, which is used as the coordinate position that the optical probe should reach when gamma adjustment is performed on this point.

[0048] like Figure 3 As shown, the steps of using this specific embodiment are as follows:

[0049] Step 1: Load the PG software on the host computer. This application implements a common protocol interface between the PG module and the PLC. Running the PG module on the host computer, the PG module controls the PLC's (x, y, z) movement of the optical probe through the protocol interface.

[0050] Step 2: The PG module loads the test file corresponding to the OLED display panel module. The PG module extracts the parameter information of the OLED display panel from the test file and customizes the bitmap.

[0051] The dot map is used to characterize the size and resolution of the OLED display panel and the relative position and size of the area requiring gamma adjustment on the OLED display panel.

[0052] The point map marks several areas on the OLED display panel that require gamma adjustment; when lighting the OLED display panel, only one of the areas is selected as the point to be located; after the coordinate position that the optical probe should reach when gamma adjustment is performed on the point to be located, the next position is selected as the point to be located and all steps three and subsequent steps are performed again.

[0053] The process of marking the area requiring gamma adjustment on the OLED display panel on the dot map includes: setting the center position coordinates of the area requiring gamma adjustment on the OLED display panel according to the parameter information of the OLED display panel on the dot map, and marking the area covered by a circle formed with the center coordinates as the center and with a set radius as the area requiring gamma adjustment on the OLED display panel.

[0054] Specifically, the PG module extracts the parameter information of the OLED display panel from the test file to obtain the size, resolution and location information of the area on the OLED display panel that requires gamma adjustment. There are two areas on the OLED display panel that require gamma adjustment, with their centers at point A and point B. The PG module generates a point map based on the above information to characterize the overall plane area of ​​the OLED display panel, and divides area A and area B on the point map, which are respectively used to characterize the two points to be located. Among them, area A is a circular area with a diameter of approximately 2mm set with point A as the center; area B is a circular area with a diameter of approximately 2mm set with point B as the center.

[0055] The point map can be drawn manually through an interactive interface based on a PG module displayed on a host computer, or can be imported from outside.

[0056] Step 3: The OLED display panel is lit up and displays the point to be located by displaying the point map.

[0057] When the OLED display panel is lit, the dot map it displays is a black image as a whole, and only in the areas that need to be positioned as dots, such as Figure 4 Area A 2 shown or Figure 5 Area 3 in B is shown as a white circle; the remaining shaded areas represent the black image. The black image area is set to grayscale 0, which is completely black (0,0,0). The white circle area is set to grayscale 255, which is pure white (255,255,255).

[0058] Specifically, when area A 2 on the dot map is displayed as a white circle on the OLED display panel, the remaining areas (including area B 3 ) on the dot map are displayed as black on the OLED display panel.

[0059] After executing all subsequent steps and completing the acquisition of the coordinate values ​​of the brightest point in area A, return to step three to display area B as a white circle on the OLED display panel, and the remaining areas on the point map (including area A) are displayed as black on the OLED display panel. Execute all subsequent steps again to acquire the coordinate values ​​of the brightest point in area B.

[0060] In step 4, manually move the optical probe so that it aligns with the brightest point visible to the naked eye within the white circle on the OLED display panel. When the PLC detects that the optical probe has not moved for a set time, it determines that the optical probe is at its initial position during the positioning phase. The coordinates (x1, y1, z1) at that moment are collected and fed back to the host computer as the initial coordinates. The coordinates (x1, y1, z1) are in the PLC's built-in coordinate system. (x1, y1) reflect the relative plane position of the optical probe, while z1 reflects its relative height.

[0061] Step 5: Based on the size and accuracy of the OLED display panel, the PG module running in the host computer sets the step distance. The host computer uses the initial coordinates (x1, y1) as the center and generates a coordinate matrix based on the set step distance. All coordinate values ​​in this coordinate matrix are based on the PLC's built-in coordinate system.

[0062] The upper level generates drive instructions, which make the PLC drive the optical probe to automatically move to the coordinate positions corresponding to the coordinate matrix. During the movement of the optical probe, its vertical position is always maintained at the z1 position.

[0063] Each time the optical probe reaches a specified coordinate position, it collects the brightness value of the OLED display panel it is facing and feeds it back to the PLC. The PLC then feeds the received brightness value back to the host computer in real time. The host computer then synchronizes the received brightness value with the coordinate value in the coordinate matrix corresponding to the brightness value and sends feedback information to the PLC after the storage is complete.

[0064] When the PLC receives feedback information from the host computer that has saved the coordinate data and brightness data of the current position, it drives the optical probe to the next specified coordinate position.

[0065] Step 6: After the host computer determines that it has received the brightness value corresponding to each coordinate position in the coordinate matrix, it generates a coordinate brightness sampling table as shown in Table 1.

[0066] Table 1 Coordinate brightness sampling table

[0067] X\Lv\Y 1 2 3 4 5 6 7 8 9 10 1 48.66 351.7 727.2 741.8 757.2 773.1 718.6 661.7 268.3 26.73 2 59.15 469.5 805.1 1006 1041 1034 923.4 765.1 369.8 26.75 3 60.03 582 1113 1362 1495 1485 1344 1050 400.6 23.34 4 2.968 772.7 1374 1487 1497 1482 1498 1268 526.8 0.6593 5 78.92 646.7 1194 1445 1492 1487 1383 1103 396.1 10.1 6 88.7 528.6 881.4 1040 1105 1108 1057 792.2 372.9 19.76 7 71.33 402.6 766.9 785.9 798.6 797.2 785.1 710.7 290.6 21.72 8 16.49 229.6 555.7 744.4 737.3 758.7 728.3 433.3 155.8 0.6382 9 0.5127 33.68 245.2 455.3 575 551.3 420.7 170.7 7.291 0.44 10 0.3616 0.4697 0.9786 71.6 89.91 102.1 41.59 0.7609 0.4432 0.3321

[0068] By analyzing the sampling data shown in Table 1, the host computer can know that the coordinate position corresponding to the maximum brightness value (1497 nit) is (x4, y5).

[0069] An example of the correspondence between the actual xy coordinate values ​​of the coordinate matrix is ​​shown in Table 2:

[0070] Table 2 Coordinate matrix table

[0071] X|Y 1 2 3 4 5 6 7 8 9 10 1 48133|237743 48133|238143 48133|238543 48133|238943 48133|239343 48133|239743 48133|240143 48133|240543 48133|240943 48133|241343 2 48533|237743 48533|238143 48533|238543 48533|238943 48533|239343 48533|239743 48533|240143 48533|240543 48533|240943 48533|241343 3 48933|237743 48933|238143 48933|238543 48933|238943 48933|239343 48933|239743 48933|240143 48933|240543 48933|240943 48933|241343 4 49333|237743 49333|238143 49333|238543 49333|238943 49333|239343 49333|239743 49333|240143 49333|240543 49333|240943 49333|241343 5 49733|237743 49733|238143 49733|238543 49733|238943 49733|239343 49733|239743 49733|240143 49733|240543 49733|240943 49733|241343 6 50133|237743 50133|238143 50133|238543 50133|238943 50133|239343 50133|239743 50133|240143 50133|240543 50133|240943 50133|241343 7 50533|237743 50533|238143 50533|238543 50533|238943 50533|239343 50533|239743 50533|240143 50533|240543 50533|240943 50533|241343 8 50933|237743 50933|238143 50933|238543 50933|238943 50933|239343 50933|239743 50933|240143 50933|240543 50933|240943 50933|241343 9 51333|237743 51333|238143 51333|238543 51333|238943 51333|239343 51333|239743 51333|240143 51333|240543 51333|240943 51333|241343 10 51733|237743 51733|238143 51733|238543 51733|238943 51733|239343 51733|239743 51733|240143 51733|240543 51733|240943 51733|241343

[0072] Then send the coordinate value (49333|239343) of (x4,y5) to the PLC for storage.

[0073] In step 7, the PLC drives the optical probe to the position (x4, y5). The optical probe again collects the brightness value at this position and feeds it back to the host computer via the PLC. If the host computer determines that the collected brightness value is within the range of 1497 nits plus or minus 10 nits, the coordinate value corresponding to (x4, y5) is determined to be the coordinate value of the brightest point in area A.

[0074] If the host computer determines that the acquired brightness value is not within the range of 1497 nit plus or minus 10 nits, it uses (x4, y5) as the initial coordinates, regenerates the coordinate matrix based on the originally set step distance, and repeats steps 5 to 7 until the coordinate value of the brightest point in area A is determined. There is no need to repeat the step distance in step 5.

[0075] The PLC saves the final coordinate value of the brightest point in area A as the coordinate value of point A. It also serves as the coordinate position that the optical probe should reach when gamma adjustment is performed in area A. This coordinate value is the coordinate value in the PLC's built-in coordinate system.

[0076] Step 8: After the host computer determines the coordinate value of the brightest point in area A, it controls the display state of the bitmap on the OLED display panel through the PG module, so that area B is displayed as a white circle on the OLED display panel, and the rest of the area on the bitmap (including area A) is displayed as black on the OLED display panel. Figure 5 shown.

[0077] Based on the relative positions of points A and B set on the point map and the final coordinate value of point A, the host computer calculates the coordinate value of point B in the PLC's built-in coordinate system. This is used as the initial coordinate to regenerate the coordinate matrix. Steps 5 to 7 are then repeated to obtain the final coordinate value of point B, which serves as the coordinate position the optical probe should reach when performing gamma adjustment on area B. There is no need to repeat the step distance setting in step 5.

[0078] When adjusting the gamma of an OLED display panel, the PLC directly drives the optical probe to the designated point on the OLED display panel based on the final coordinate values ​​of points A and B saved in the memory. This eliminates the need for manual positioning operations, saving manpower and improving efficiency. At the same time, positioning accuracy can be increased to 0.5mm, effectively improving gamma adjustment accuracy and indirectly increasing the production yield of OLED display panels.

[0079] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0080] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0081] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art may still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

[0084] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An automatic alignment method for optical probes based on an OLED display panel gamma production line, characterized by: The following steps are involved: Lighting up the OLED display panel, wherein the brightness of the point to be located on the OLED display panel is higher than that of the rest of the OLED display panel; This point is used to indicate the area of ​​the OLED display panel that requires gamma adjustment; The optical probe is moved to a plurality of predetermined coordinate positions in sequence. After the optical probe reaches the predetermined coordinate position, the brightness value of the position of the OLED display panel facing the optical probe is collected. The predetermined coordinate positions cover the area where the point is located. Compare the sizes of all collected brightness values; Determine the coordinate position corresponding to the maximum brightness value as the coordinate position the optical probe should reach when performing gamma adjustment on that point.

2. The automatic alignment method for optical probes based on an OLED display panel gamma production line according to claim 1, characterized in that: The process of determining the coordinate position corresponding to the maximum brightness value as the coordinate position that the optical probe should reach when performing gamma adjustment on the point to be located includes: moving the optical probe to the coordinate position corresponding to the maximum brightness value, and the optical probe again collecting the brightness value of the OLED display panel corresponding to the coordinate position; and comparing the brightness value collected this time with the maximum brightness value; If the brightness value collected this time is within the set floating range centered on the maximum brightness value, the coordinate position corresponding to the maximum brightness value is output as the coordinate position that the optical probe should reach when gamma adjustment is performed on that point; If the brightness value collected this time is outside the set floating range centered on the maximum brightness value, the optical probe will be moved again to the set coordinate positions and the subsequent steps will be executed again.

3. The automatic alignment method for optical probes based on an OLED display panel gamma production line according to claim 1, characterized in that: The process of lighting up the OLED display panel includes: customizing a dot map based on the parameter information of the OLED display panel; the dot map is used to characterize the size and resolution of the OLED display panel and the relative position and size of the area on the OLED display panel that requires gamma adjustment; and loading and lighting the OLED display panel to display the dot map.

4. The method for automatic alignment of optical probes based on an OLED display panel gamma production line according to claim 3, characterized in that: The point map marks several areas on the OLED display panel that require gamma adjustment; when lighting the OLED display panel, only one of the areas is selected as the point to be positioned; after determining the coordinate position that the optical probe should reach when performing gamma adjustment on the point to be positioned, the next area is selected as the point to be positioned and all steps are performed again.

5. The automatic alignment method for optical probes based on an OLED display panel gamma production line according to claim 4, characterized in that: The process of marking the area requiring gamma adjustment on the dot map includes: setting the center position coordinates of the area requiring gamma adjustment on the OLED display panel on the dot map, and marking the area covered by a circle formed with the center coordinates as the center and a set radius as the area requiring gamma adjustment on the OLED display panel.

6. The method for automatic alignment of optical probes based on an OLED display panel gamma production line according to claim 1, characterized in that: The points to be positioned on the OLED display panel are displayed in white, and the rest of the area is displayed in black.

7. The method for automatic alignment of optical probes based on an OLED display panel gamma production line according to claim 1, characterized in that: The process of sequentially moving the optical probe to several set coordinate positions includes: after moving the optical probe to the area of ​​the point to be located on the OLED display panel, recording the coordinate value of the optical probe as the initial coordinate; using the initial coordinate as the center, generating a coordinate matrix according to the set step distance; the optical probe automatically moves to the coordinate position corresponding to the coordinate matrix in sequence and collects the brightness value of the position of the OLED display panel it faces.

8. The automatic alignment method for optical probes based on an OLED display panel gamma production line according to claim 7, characterized in that: The process of moving the optical probe to the area of ​​the OLED display panel where the point to be located is located includes: manually moving the optical probe to align it with the brightest point observed by the naked eye in the area with higher brightness of the OLED display panel.

9. An automatic alignment device for optical probes based on an OLED display panel gamma production line, characterized by: Including optical probe, PG module, host computer and PLC; The PG module is used to generate a point map, which is used to represent the relative positions of the points to be positioned on the OLED display panel. The points to be positioned are areas on the OLED display panel that require gamma adjustment. The PG module sends the point map to the OLED display panel, the OLED display panel lights up and displays the point map, and the brightness of the point to be located on the OLED display panel is greater than that of the rest of the area; The host computer generates a drive command based on the bitmap sent by the PG module and sends it to the PLC; The PLC drives the optical probe to reach several set coordinate positions in the area where the point to be located is located according to the driving command sent by the host computer, and synchronously collects the brightness value of the position of the OLED display panel it faces and feeds it back to the host computer; The host computer outputs the coordinate position corresponding to the maximum brightness value, which is used as the coordinate position that the optical probe should reach when gamma adjustment is performed on this point.

10. The optical probe automatic alignment device based on the OLED display panel gamma production line according to claim 9, characterized in that: After manually moving the optical probe to the brightest spot in the area of ​​the OLED display panel where the point to be located is located, which can be observed by the naked eye, the PLC records the coordinate value of the optical probe and feeds it back to the host computer; the host computer uses the coordinate value as the initial coordinate; the host computer uses the initial coordinate as the center and generates a coordinate matrix as the set coordinate position according to the set step distance; the PLC drives the optical probe to move to the set coordinate position in sequence and collects the brightness value of the position of the OLED display panel it faces.

Images