Crosstalk test method and system for mobile phone display screen

Abstract

The invention provides a Crosstalk test method and system for a mobile phone display screen, and the method comprises the steps: 10, inputting a signal on a to-be-tested display screen, so as to display a detection image; step 20, performing crosstalk detection on the display screen to be detected by using the detection picture; wherein the center of the detection picture is provided with a cross-shaped detection white block, the gray-scale value of the cross-shaped detection white block is 256, and the gray-scale value of the background bottom color of the detection picture is 128. The cross-shaped detection white block is provided with multiple steps, and multiple white blocks with different proportions are used as test pictures at the same time. And multiple white blocks with different proportions are used as test pictures at the same time, so that the crosstalk degree change caused by different steps can be tested. Through the display picture, the influence of 1 / 2 and 1 / 3 white blocks on the upper and lower sides can be observed at the same time, and the 1 / 2 picture and the 1 / 3 picture do not need to be switched back and forth. The test efficiency is improved. And the strict degree difference between 1 / 2 white blocks and 1 / 3 white blocks can be conveniently compared.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen testing, and in particular to a crosstalk testing method and system for a mobile phone display screen. Background Art

[0002] In the process of producing TFT-LCD, the detection of cross-display crosstalk is a very important link. Only qualified products can be shipped. If cross-display crosstalk is detected (i.e., poor display caused by cross-display crosstalk), it is necessary to make design or process improvements until the cross-display crosstalk is eliminated or reduced. In the mobile phone LCD test, the switch of a certain pixel point affects the display effect of another pixel point due to the inability to completely close the display switch of the TFT liquid crystal box, which is the display cross-display crosstalk phenomenon.

[0003] In the prior art, in the process of detecting crosstalk of liquid crystal display panels, the more common detection pattern is generally to display a white block in the middle of a 127 gray background image, and the white block can be a 1 / 3 white block or a 1 / 2 white block. Among them, the 1 / 2 white block has more white pixels in the middle, and the impact on the upper and lower parts is greater than that of the 1 / 3 white block, that is, the 1 / 2 white block is more stringent for detecting crosstalk. Therefore, it is necessary to switch back and forth between the 1 / 2 image and the 1 / 3 image during the detection.

[0004] All pixels in other areas except the white block have the same color and grayscale value. If the brightness of the horizontal (or vertical) area in the middle area of ​​the LCD panel using this detection screen is higher than that of other areas, it indicates that crosstalk exists in the LCD panel; otherwise, the performance of the LCD panel is relatively good and there is no crosstalk.

[0005] The Chinese patent "CN115002268A A mobile phone display screen crosstalk test method and system" reduces the missed detection rate, but the detection efficiency is low. Summary of the invention

[0006] The present invention provides a crosstalk testing method and system for a mobile phone display screen, which can improve the detection efficiency and the detection accuracy.

[0007] Specifically, a crosstalk test method for a mobile phone display is proposed, comprising:

[0008] Step 10: Input a signal on the display screen to be tested to display the test screen;

[0009] Step 20: Use the detection image to perform crosstalk detection on the display screen to be tested;

[0010] Among them, a cross-shaped detection white block is set in the center of the detection screen, the grayscale value of the cross-shaped detection white block is 256, and the grayscale value of the background color of the detection screen is 128.

[0011] As a preferred technical solution, the cross-shaped detection white block is provided with multiple steps, and multiple white blocks with different proportions are used as the test screen at the same time.

[0012] As a preferred technical solution, step 10 also includes:

[0013] Step 101: inputting signals to the gate lines and the data lines, and displaying a first rectangular detection white block in the central area of ​​the detection screen;

[0014] Step 102: inputting signals to the gate lines and the data lines, and displaying a second rectangular detection white block in the central area of ​​the detection screen;

[0015] The second rectangular detection white block overlaps with the first rectangular detection white block to form a second-order cross detection white block, and the length and width of the first rectangular detection white block are different from those of the second rectangular detection white block.

[0016] As a preferred technical solution, step 10 also includes:

[0017] Step 103: inputting signals to the gate lines and the data lines, and displaying a third rectangular detection white block in the central area of ​​the detection screen;

[0018] Step 104: Overlap the third rectangular detection white block and display it on the second-order cross-shaped detection white block, so as to form a third-order cross-shaped detection white block.

[0019] As a preferred technical solution, step 103 and step 104 are repeated multiple times to form an N-order cross-shaped white block detection.

[0020] As a preferred technical solution, the first rectangular detection white block, the second rectangular detection white block and the third rectangular detection white block are rectangular blocks arranged vertically.

[0021] As a preferred technical solution, the length of the first rectangular detection white block is 1 / 2 of the length of the display screen, and the width of the first rectangular detection white block is 1 / 2 of the width of the display screen.

[0022] As a preferred technical solution, the width of the second rectangular detection white block is 1 / 3 of the width of the display screen.

[0023] As a preferred technical solution, the width of the third rectangular detection white block is smaller than the width of the second rectangular detection white block, and the length of the third rectangular detection white block is larger than the length of the second rectangular detection white block.

[0024] On the other hand, a crosstalk test system for a mobile phone display screen is also proposed. Using the test method as described above, the system includes: a display screen to be tested, a signal unit, and a control unit;

[0025] The signal unit is used to input electrical signals to the gate lines and data lines of the display screen to be tested, so as to drive the display screen to be tested to display;

[0026] The control unit is used to set the central area of ​​the display screen of the display screen to be tested as a cross-shaped detection white block; wherein the cross-shaped detection white block is set to include multiple steps, with multiple white blocks of different proportions serving as the test screen at the same time.

[0027] Compared with the prior art, the present invention has achieved the following technical effects:

[0028] (1) A cross-shaped detection white block is set in the center of the detection screen. The grayscale value of the cross-shaped detection white block is 256, and the grayscale value of the background color of the detection screen is 128. The cross-shaped detection white block is set with multiple steps, and multiple white blocks with different proportions are used as the test screen at the same time. Using multiple white blocks with different proportions as the test screen at the same time is conducive to testing the changes in the degree of crosstalk caused by different steps.

[0029] (2) Through this display screen, the impact of 1 / 2 and 1 / 3 white blocks on the upper and lower sides can be observed at the same time, without switching between 1 / 2 and 1 / 3 screens. This speeds up the test efficiency. It is also convenient to compare the strictness differences between 1 / 2 and 1 / 3 white blocks. By directly observing the cross, it is easy to determine how strict the crosstalk is and how serious the crosstalk defect is, making it easier for process workers to detect mobile phone displays with crosstalk, reducing the missed detection rate.

[0030] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a crosstalk test method for a mobile phone display screen proposed in Example 1 of the present invention Figure 1 ;

[0032] Figure 2 A schematic diagram of a crosstalk test method for a mobile phone display screen proposed in Example 1 of the present invention Figure 2 ;

[0033] Figure 3 A schematic diagram of a crosstalk test method for a mobile phone display screen proposed in Example 1 of the present invention Figure 3 ;

[0034] Figure 4 This is a schematic diagram of the detection screen proposed in Example 1 of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of a crosstalk test system for a mobile phone display screen proposed in Example 2 of the present invention.

[0036] Description of reference numerals:

[0037] The cross detects a white block 10; the first rectangle detects a white block 101; the second rectangle detects a white block 102; the third rectangle detects a white block 103;

[0038] Display screen to be tested 20; signal unit 30; control unit 40. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0040] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0041] The term "including" and its variations used in the present invention are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0042] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0043] Example 1

[0044] like Figure 1-3 As shown, a crosstalk test method for a mobile phone display screen is proposed in an embodiment of the present invention.

[0045] Specifically include:

[0046] Step 10: Input a signal on the display screen 20 to be tested to display a test screen;

[0047] Step 20: Perform crosstalk detection on the display screen 20 to be tested using the detection image;

[0048] A cross-shaped detection white block 10 is provided at the center of the detection screen, the grayscale value of the cross-shaped detection white block 10 is 256, and the grayscale value of the background color of the detection screen is 128.

[0049] Preferably, Figure 4 As shown, the cross-shaped detection white block 10 is provided with multiple steps, and multiple white blocks with different proportions are used as test images at the same time. Using multiple white blocks with different proportions as test images at the same time is conducive to testing the changes in crosstalk caused by different steps.

[0050] like Figure 2 As shown, preferably, step 10 also includes:

[0051] Step 101: inputting signals to the gate lines and the data lines, and displaying a first rectangular detection white block 101 in the central area of ​​the detection screen;

[0052] Step 102: inputting signals to the gate lines and the data lines, and displaying a second rectangular detection white block 102 in the central area of ​​the detection screen;

[0053] The second rectangular detection white block 102 and the first rectangular detection white block 101 overlap to form a second-order cross detection white block 10 , and the length and width of the first rectangular detection white block 101 and the second rectangular detection white block 102 are different.

[0054] like Figure 3 As shown, preferably, step 10 also includes:

[0055] Step 103: inputting signals to the gate lines and the data lines, and displaying a third rectangular detection white block 103 in the central area of ​​the detection screen;

[0056] Step 104 : Overlap the third rectangular detection white block 103 on the second-order cross detection white block 10 to form a third-order cross detection white block 10 .

[0057] Preferably, step 103 and step 104 are repeated multiple times to form an N-order cross-shaped detection white block 10 .

[0058] Preferably, continue to refer to Figure 2 , the first rectangular detection white block 101, the second rectangular detection white block 102 and the third rectangular detection white block 103 are rectangular blocks arranged vertically.

[0059] Preferably, the length of the first rectangular detection white block 101 is 1 / 2 of the length of the display screen, and the width of the first rectangular detection white block 101 is 1 / 2 of the width of the display screen.

[0060] Preferably, the width of the second rectangular detection white block 102 is 1 / 3 of the width of the display screen.

[0061] Preferably, the width of the third rectangular detection white block 103 is smaller than the width of the second rectangular detection white block 102 , and the length of the third rectangular detection white block 103 is greater than the length of the second rectangular detection white block 102 .

[0062] Through this display screen, you can simultaneously observe the impact of 1 / 2 and 1 / 3 white blocks on the upper and lower parts without switching between 1 / 2 and 1 / 3 screens. This speeds up the test efficiency. It is also convenient to compare the strictness differences between 1 / 2 and 1 / 3 white blocks. By directly observing the cross, you can easily get the specific strictness and the severity of the crosstalk defect, making it easier for process workers to detect mobile phone displays with crosstalk and reduce the missed detection rate.

[0063] Example 2

[0064] like Figure 5 As shown, a crosstalk test system for a mobile phone display screen proposed in this embodiment uses the test method in Example 1. Specifically, the system includes: a display screen to be tested 20, a signal unit 30, and a control unit 40.

[0065] The signal unit 30 is used to input electrical signals to the gate lines and data lines of the display screen 20 to be tested, so as to drive the display screen 20 to be tested to display.

[0066] The control unit 40 is used to set the center area of ​​the display screen of the display screen 20 to be tested as a cross-shaped detection white block 10 .

[0067] The cross-shaped detection white block 10 is set to include multiple steps, and multiple white blocks with different proportions are used as test images at the same time. The grayscale value of the cross-shaped detection white block 10 is 256, and the grayscale value of the background color of the detection image is 128. Multiple white blocks with different proportions are used as test images at the same time. Using multiple white blocks with different proportions as test images at the same time is conducive to testing the changes in the degree of crosstalk caused by different steps.

[0068] like Figure 4 As shown, the second rectangular detection white block 102 overlaps with the first rectangular detection white block 101 to form a second-order cross detection white block 10, and the length and width of the first rectangular detection white block 101 and the second rectangular detection white block 102 are different.

[0069] The length of the first rectangular detection white block 101 is 1 / 2 of the length of the display screen, the width of the first rectangular detection white block 101 is 1 / 2 of the width of the display screen, and the width of the second rectangular detection white block 102 is 1 / 3 of the width of the display screen.

[0070] Preferably, the width of the third rectangular detection white block 103 is smaller than the width of the second rectangular detection white block 102 , and the length of the third rectangular detection white block 103 is greater than the length of the second rectangular detection white block 102 .

[0071] Through this display screen, you can simultaneously observe the impact of 1 / 2 and 1 / 3 white blocks on the upper and lower parts without switching between 1 / 2 and 1 / 3 screens. This speeds up the test efficiency. It is also convenient to compare the strictness differences between 1 / 2 and 1 / 3 white blocks. By directly observing the cross, you can easily get the specific strictness and the severity of the crosstalk defect, making it easier for process workers to detect mobile phone displays with crosstalk and reduce the missed detection rate.

[0072] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A crosstalk test method for a mobile phone display, characterized in that: include: Step 10: Input a signal on the display screen to be tested to display the test screen; Step 20: using the detection image to perform crosstalk detection on the display screen to be tested; Among them, a cross-shaped detection white block is set in the center of the detection image, the grayscale value of the cross-shaped detection white block is 256, and the grayscale value of the background color of the detection image is 128.

2. A crosstalk test method for a mobile phone display screen according to claim 1, characterized in that: The cross-shaped detection white block is provided with multiple steps, and multiple white blocks with different proportions are used as the test screen at the same time.

3. A crosstalk test method for a mobile phone display screen according to claim 2, characterized in that: The step 10 further comprises: Step 101: inputting signals to the gate lines and the data lines, and displaying a first rectangular detection white block in the central area of ​​the detection screen; Step 102: inputting signals to the gate lines and the data lines, and displaying a second rectangular detection white block in the central area of ​​the detection screen; The second rectangular detection white block overlaps with the first rectangular detection white block to form a second-order cross detection white block, and the first rectangular detection white block and the second rectangular detection white block have different lengths and widths.

4. A crosstalk test method for a mobile phone display screen according to claim 3, characterized in that: The step 10 further comprises: Step 103: inputting signals to the gate lines and the data lines, and displaying a third rectangular detection white block in the central area of ​​the detection screen; Step 104: Overlap the third rectangular detection white block and display it on the second-order cross detection white block, so as to form a third-order cross detection white block.

5. A crosstalk test method for a mobile phone display screen according to claim 4, characterized in that: The steps 103 and 104 are repeated multiple times to form an N-step cross-shaped white block detection.

6. A crosstalk test method for a mobile phone display screen according to claim 4, characterized in that: The first rectangular detection white block, the second rectangular detection white block and the third rectangular detection white block are rectangular blocks arranged vertically.

7. A crosstalk test method for a mobile phone display screen according to claim 6, characterized in that: The length of the first rectangular detection white block is 1 / 2 of the length of the display screen, and the width of the first rectangular detection white block is 1 / 2 of the width of the display screen.

8. A crosstalk test method for a mobile phone display screen according to claim 6, characterized in that: The width of the second rectangular detection white block is 1 / 3 of the width of the display screen.

9. A crosstalk test method for a mobile phone display screen according to claim 6, characterized in that: The width of the third rectangular detection white block is smaller than the width of the second rectangular detection white block, and the length of the third rectangular detection white block is larger than the length of the second rectangular detection white block.

10. A crosstalk test system for a mobile phone display screen, using the test method according to any one of claims 1 to 9, characterized in that: include: Display screen, signal unit and control unit to be tested; The signal unit is used to input electrical signals to the gate lines and data lines of the display screen to be tested, so as to drive the display screen to be tested to display; The control unit is used to set the center area of ​​the display screen of the display screen to be tested as a cross-shaped detection white block; The cross-shaped detection white block is configured to include multiple steps, and multiple white blocks with different proportions are used as the test picture at the same time.

Images