Method and system for rapidly detecting bad points of display screen

Abstract

The invention discloses a display screen bad point rapid detection method and system, and the method comprises the steps: making a first test picture, displaying a background of a first color on the first test picture, and displaying a group of first test points of a second color on each first partition; making a second test picture, displaying a background of a second color on the second test picture, and displaying a group of second test points of the first color on each second partition, the distance between the second test points being a critical distance; burning the first test picture and the second test picture into a drive IC of the smart watch; calling a first test picture and a second test picture, and comparing an abnormal point on an AMOLED display screen of the smart watch to be tested with a first test point of the first test picture or a second test point of the second test picture; the abnormal point is compared with the first test point or the second test point, so that an operator can quickly judge the bad point, manpower, material resources and time efficiency are greatly saved, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of rapid detection of bad points on a liquid crystal display screen, and in particular to a rapid detection method and system for bad points on a display screen. Background Art

[0002] AMOLED has bright display, high contrast and small screen, and is widely used in smart watch projects. Smart watches are becoming more and more comprehensive, integrating a series of functions such as touch, display, NFC payment, etc.

[0003] As a consumer product, AMOLED display smart watches have a large shipment volume. When the products are shipped to customers, white spots and black spots often appear. However, the operators of the customer's production line cannot quickly confirm the size of the smaller defective spots. They need to use two-dimensional equipment to measure the size of the above defective spots to determine whether they meet the requirements of the specification. However, due to the large shipment volume and urgent delivery time of AMOLED displays, it takes a lot of time, manpower and material resources to detect defective spots.

[0004] Therefore, in order to quickly determine the defective spots on AMOLED display products, it is necessary to optimize the defective spot detection scheme of existing AMOLED display products to meet market demand. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a method and system for quickly detecting bad spots on a display screen, so as to solve the problem that the detection efficiency of bad spots on existing AMOLED display screens is low and requires a lot of manpower and material resources.

[0006] In a first aspect, a method for quickly detecting bad spots on a display screen comprises: Step 100: Create a first test screen, display a background of a first color on the first test screen, obtain a plurality of first partitions of the first test screen, display a group of first test points of a second color on each of the first partitions, and the distance between the first test points is a critical distance; Step 200: create a second test screen, display a background of a second color on the second test screen, obtain a plurality of second subareas of the second test screen, display a group of second test points of a first color on each of the second subareas, and the distance between the second test points is a critical distance; Step 300: Burn the first test screen and the second test screen into the driver IC of the smart watch; Step 400: calling the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen to quickly determine whether it is a bad point; The critical distance is the minimum distance that is judged as a defective point.

[0007] Furthermore, the step 100 includes Step 110: Divide the first test screen into a first number of first partitions; Step 120: Display a set of first test points on each of the first partitions; The number of the group of first test points is 2, and the first number is 4.

[0008] Furthermore, the step 200 includes: Step 210: Divide the second test screen into a second number of second partitions; Step: 220, displaying a set of second test points on each of the second partitions; The number of the group of second test points is 2, and the size of the second number is 4.

[0009] Furthermore, the step 400 includes: Step 410: calling the first test screen, comparing any two abnormal points on the smart watch with a group of first test points on the first test screen, and determining whether they are bad points; Step 420: If it is not determined whether it is a bad point, call the second test screen, compare any two abnormal points on the smart watch with a group of second test points in the second test screen, and determine whether they are bad points.

[0010] Furthermore, the step 410 includes: Step 411, comparing the distance between any two abnormal points with the critical distance between the first test points; Step 412: If it is greater than the critical distance, it is determined to be a bad point. If it is less than the critical distance, it is not considered a bad point. If it cannot be determined, proceed to the next step.

[0011] Furthermore, the step 420 includes: Step 421, comparing the distance between any two abnormal points with the critical distance between the second test points; Step 422: If it is greater than the critical distance, it is determined to be a bad point; if it is less than the critical distance, it is not counted as a bad point.

[0012] Furthermore, the first color is white, the second color is black, and the critical distance is 2 mm.

[0013] In order to solve the above problem, a display screen bad point rapid detection system is also provided, which adopts the display screen bad point rapid detection method described in the first aspect, and comprises: A first production module is used to produce a first test picture, wherein the background of the first test picture is displayed in a first color, and a group of first test points of a second color are displayed on each first partition of the first test picture, and the distance between the first test points is a critical distance; A second production module is used to produce a second test picture, the background of the second test picture is displayed in a second color, a group of second test points of the first color are displayed on each second partition of the second test picture, and the distance between the second test points is a critical distance; A burning module, used for burning the first test picture and the second test picture into the driver IC of the smart watch; A detection module, used for calling the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen, so as to quickly determine whether it is a bad point; The critical distance is the minimum distance that is judged as a defective point.

[0014] Furthermore, the first production module includes: A first partitioning unit, configured to divide the first test picture into a first number of first partitions; The first display unit is used to display a group of first test points on each of the first partitions.

[0015] Furthermore, the second production module includes: A second dividing unit, configured to divide the second test picture into a second number of second partitions; The second display unit is used to display a group of second test points on each of the second subareas.

[0016] Compared with the prior art, the embodiments of the present application mainly have the following technical effects: by producing two test screens and corresponding multiple groups of test points, when an abnormal point that is difficult to judge appears on the production line of the client, by comparing it with the first test point in the first test screen or the second test point in the second test screen, the operator can quickly judge the defective point, which greatly saves manpower, material resources and time, thereby saving costs. AMOLED display products can meet the timeliness requirements of the current market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A flowchart of an embodiment of a method for quickly detecting bad spots on a display screen according to the present application; Figure 2 yes Figure 1 A flowchart of a specific implementation of S100; Figure 3 yes Figure 2 A flowchart of a specific implementation of S200; Figure 4 yes Figure 1 A flowchart of a specific implementation of S400; Figure 5 yes Figure 4 A flowchart of a specific implementation of S410; Figure 6 yes Figure 4 A flowchart of a specific implementation of S420; Figure 7 It is a structural schematic diagram of an embodiment of a display screen bad point rapid detection system according to the present application; Figure 8 is a schematic diagram of the pixel size structure in this application; Fig. 9 It is a schematic diagram of the smart watch partitions in this application. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] The purpose of the embodiments of the present application is to provide a method and system for quickly detecting bad spots on a display screen, so as to solve the problem that the detection efficiency of bad spots on existing AMOLED display screens is low and requires a lot of manpower and material resources.

[0024] First, as Figure 1 , Figure 1 A flowchart of an embodiment of a method for quickly detecting bad spots on a display screen according to the present application; a method for quickly detecting bad spots on a display screen includes: S100, creating a first test screen, displaying a background of a first color on the first test screen, acquiring a plurality of first partitions of the first test screen, displaying a group of first test points of a second color on each first partition, wherein the distance between the first test points is a critical distance.

[0025] In this embodiment, in the detection of bad spots, let the bad spot width be x and the length be y, then the bad spot size calculation formula is: φ=(x+y) / 2 (1), When the size is smaller than the first threshold, it is not counted as a bad point. When it is larger than the first threshold and the distance between two bad points is larger than the second threshold, it is counted as a bad point.

[0026] In this embodiment, the second threshold is the critical distance.

[0027] In a preferred embodiment, Figure 2 , Figure 2 yes Figure 1 A flowchart of a specific implementation of S100; S100 includes: S110, dividing the first test screen into a first number of first partitions; S120, displaying a group of first test points on each first partition; wherein the number of a group of first test points is 2, and the size of the first number is 4.

[0028] In this embodiment, the background of the first color may be a white background, and the first test point of the second color may be a black test point, so as to improve the contrast.

[0029] In this embodiment, if Fig. 9 , Fig. 9 This is a schematic diagram of the smart watch partitions in this application. The AA display area in the first test screen can be divided into four first partitions, which can be equally divided into four display areas of equal area, that is, four first partitions of equal area.

[0030] In this embodiment, two first test points are set in each first partition, and the first test points can be connected and the critical distance can be marked.

[0031] In this embodiment, the first threshold value may be selected as 0.1 mm, and the second threshold value may be selected as 2 mm, or other threshold values ​​that are more suitable in practice.

[0032] like Figure 8 , Figure 8 It is a schematic diagram of the pixel size structure in the present application; the size of the pixel of the AMOLED of the smart watch in the embodiment of the present application is 0.078*0.078, and its size is greater than the first threshold value 0.1mm.

[0033] S200, creating a second test screen, displaying a background of a second color on the second test screen, acquiring a plurality of second partitions of the second test screen, displaying a group of second test points of the first color on each second partition, and the distance between the second test points being a critical distance.

[0034] In a preferred embodiment, Figure 3 , Figure 3 yes Figure 2 A flowchart of a specific implementation of S200; S200 includes S210, dividing the second test screen into a second number of partitioned display areas; S220, displaying a group of second test points on each partitioned display area; wherein the number of a group of second test points is 2, and the size of the second number is 4.

[0035] In this embodiment, the background of the second color may be a black background, and the second test point of the first color may be a white test point, so as to improve the contrast.

[0036] In this embodiment, if Fig. 9 The AA display area in the second test screen can be divided into four second partitions, which can be equally divided into four display areas of equal areas, that is, four second partitions of equal areas.

[0037] In this embodiment, two second test points are set in each second partition, and the second test points can be connected and the critical distance can be marked.

[0038] In this embodiment, the first threshold value may be selected as 0.1 mm, and the second threshold value may be selected as 2 mm, or other threshold values ​​that are more suitable in practice.

[0039] S300, burning the first test picture and the second test picture into the driver IC of the smart watch.

[0040] S400, calling the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen to quickly determine whether it is a bad point; wherein the critical distance is the minimum distance determined as a bad point.

[0041] In the embodiment of the present application, the backgrounds and test points of the two test screens are displayed differently, but the critical distances between the test points are equal, both of which are the second threshold. Since the size of the pixels of the AMOLED display is already larger than the first threshold of 0.1 mm, the next step is to compare whether the distance between the test points is larger than the critical distance, that is, the second threshold.

[0042] In a preferred embodiment, Figure 4 , Figure 4 yes Figure 1 A flowchart of a specific implementation method of S400 in the figure; S400 includes: S410, calling the first test screen, comparing any two abnormal points on the smart watch with a group of first test points on the first test screen, and determining whether they are bad points; S420, if it is not determined whether they are bad points, calling the second test screen, comparing any two abnormal points on the smart watch with a group of second test points on the second test screen, and determining whether they are bad points.

[0043] In a preferred embodiment, Figure 5 , Figure 5 yes Figure 4 A flowchart of a specific implementation of S410; S410 includes: S411, comparing the distance between any two abnormal points with the critical distance between the first test points; S412, if it is greater than the critical distance, it is determined to be a bad point, if it is less than the critical distance, it is not counted as a bad point, if it cannot be determined, proceed to the next S.

[0044] Further, such as Figure 6 , Figure 6 yes Figure 4A flowchart of a specific implementation of S420; S420 includes: S421, comparing the distance between any two abnormal points with the critical distance between the second test points; S422, if it is greater than the critical distance, it is determined to be a bad point, if it is less than the critical distance, it is not counted as a bad point.

[0045] Furthermore, the first color is white, the second color is black, and the critical distance is 2 mm.

[0046] In order to solve the above problems, Figure 7 , Figure 7 1 is a schematic diagram of a structure of an embodiment of a display screen bad point rapid detection system 500 according to the present application; and also provides a display screen bad point rapid detection system, which adopts the display screen bad point rapid detection method of the first aspect, including: A first production module 501 is used to produce a first test screen, the background of the first test screen is displayed in a first color, a group of first test points of a second color are displayed on each first partition of the first test screen, and the distance between the first test points is a critical distance; A second production module 502 is used to produce a second test screen, the background of the second test screen is displayed in a second color, a group of second test points of the first color are displayed on each second subarea of ​​the second test screen, and the distance between the second test points is a critical distance; A burning module 503, used for burning the first test picture and the second test picture into the driver IC of the smart watch; The detection module 504 is used to call the first test screen and the second test screen, and compare the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen to quickly determine whether it is a bad point; The critical distance is the minimum distance that is judged as a defective point.

[0047] Furthermore, the first production module includes: a first division unit, used for dividing the first test screen into a first number of first partitions; and a first display unit, used for displaying a group of first test points on each of the first partitions.

[0048] Furthermore, the second production module includes: a second division unit, used for dividing the second test picture into a second number of second partitions; and a second display unit, used for displaying a group of second test points on each of the second partitions.

[0049] Compared with the prior art, the embodiments of the present application mainly have the following technical effects: by producing two test screens and corresponding multiple groups of test points, when an abnormal point that is difficult to judge appears on the production line of the client, by comparing it with the first test point in the first test screen or the second test point in the second test screen, the operator can quickly judge the defective point, which greatly saves manpower, material resources and time, thereby saving costs. AMOLED display products can meet the timeliness requirements of the current market.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for quickly detecting bad spots on a display screen, comprising: Creating a first test screen, displaying a background of a first color on the first test screen, acquiring a plurality of first subareas of the first test screen, and displaying a group of first test points of a second color on each of the first subareas, wherein the distance between the first test points is a critical distance; Creating a second test screen, displaying a background of a second color on the second test screen, acquiring a plurality of second subareas of the second test screen, and displaying a group of second test points of a first color on each of the second subareas, wherein the distance between the second test points is a critical distance; Burning the first test screen and the second test screen into the driver IC of the smart watch; Calling the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen, so as to quickly determine whether it is a bad point; The critical distance is the minimum distance that is judged as a defective point.

2. The method for quickly detecting bad spots on a display screen according to claim 1, characterized in that: The step of making a first test screen, displaying a background of a first color on the first test screen, acquiring a plurality of first partitions of the first test screen, and displaying a group of first test points of a second color on each of the first partitions, wherein the distance between the first test points is a critical distance, includes: Dividing the first test screen into a first number of first partitions; Displaying a set of first test points on each of the first partitions; The number of the group of first test points is 2, and the first number is 4.

3. The method for quickly detecting bad spots on a display screen according to claim 1, characterized in that: The step of making a second test screen, displaying a background of a second color on the second test screen, acquiring a plurality of second partitions of the second test screen, and displaying a group of second test points of a first color on each of the second partitions, wherein the distance between the second test points is a critical distance, includes: dividing the second test picture into a second number of second partitions; Displaying a set of second test points on each of the second subareas; The number of the group of second test points is 2, and the size of the second number is 4.

4. The method for quickly detecting bad spots on a display screen according to claim 1, characterized in that: The calling of the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen to quickly determine whether it is a bad point, includes: Calling a first test screen, comparing any two abnormal points on the smart watch with a group of first test points on the first test screen, and determining whether they are bad points; If it is not determined whether it is a bad point, the second test screen is called to compare any two abnormal points on the smart watch with a group of second test points in the second test screen to determine whether they are bad points.

5. The method for quickly detecting bad spots on a display screen according to claim 4, characterized in that: The calling of the first test screen, comparing any two abnormal points on the smart watch with a group of first test points on the first test screen, and determining whether they are bad points, includes: Compare the distance between any two abnormal points with the critical distance between the first test points; If it is greater than the critical distance, it is determined to be a defective point. If it is less than the critical distance, it is not counted as a defective point. If it cannot be determined, proceed to the next step.

6. The method for quickly detecting bad spots on a display screen according to claim 4, characterized in that: If it is not determined whether it is a bad point, calling the second test screen, comparing any two abnormal points on the smart watch with a group of second test points in the second test screen, and determining whether they are bad points, including: Compare the distance between any two abnormal points with the critical distance between the second test points; If it is greater than the critical distance, it is determined to be a defective point, and if it is less than the critical distance, it is not counted as a defective point.

7. The method for quickly detecting bad spots on a display screen according to any one of claims 1 to 6, characterized in that: The first color is white, the second color is black, and the critical distance is 2 mm.

8. A display screen bad point rapid detection system, using the display screen bad point rapid detection method according to claim 7, characterized in that: include: A first production module is used to produce a first test picture, wherein the background of the first test picture is displayed in a first color, and a group of first test points of a second color are displayed on each first partition of the first test picture, and the distance between the first test points is a critical distance; A second production module is used to produce a second test picture, the background of the second test picture is displayed in a second color, a group of second test points of the first color are displayed on each second partition of the second test picture, and the distance between the second test points is a critical distance; A burning module, used for burning the first test picture and the second test picture into the driver IC of the smart watch; A detection module, used for calling the first test screen and the second test screen, comparing the abnormal point on the AMOLED display screen of the smart watch to be tested with the first test point of the first test screen or the second test point of the second test screen, so as to quickly determine whether it is a bad point; The critical distance is the minimum distance that is judged as a defective point.

9. The display screen defect point rapid detection system according to claim 8, characterized in that: The first production module comprises: A first partitioning unit, configured to divide the first test picture into a first number of first partitions; The first display unit is used to display a group of first test points on each of the first partitions.

10. The display screen defect point rapid detection system according to claim 8, characterized in that: The second production module includes: A second dividing unit, configured to divide the second test picture into a second number of second partitions; The second display unit is used to display a group of second test points on each of the second subareas.

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