Method, device, system and test fixture for determining the degree of light leakage of a display panel

Abstract

A method, apparatus, system, and testing fixture for determining the degree of light leakage in a display panel are disclosed. When a light leakage detection device detects a light leakage sub-region within multiple sub-regions of the display panel, it determines the degree of light leakage based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of light leakage by inspectors, the reliability and accuracy of determining the degree of light leakage in a display panel are effectively improved because the light leakage detection device can automatically determine the degree of light leakage based on the brightness of the sub-regions.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a method, apparatus, system and testing fixture for determining the light leakage level of a display panel. Background Technology

[0002] During the manufacturing process of display panels, factors such as process errors may cause light leakage in the display area. Therefore, after the display panel is manufactured, inspection personnel can determine the severity of light leakage based on experience, and thus determine whether the display panel meets the factory requirements for shipment.

[0003] However, the reliability of testers' judgment of the severity of light leakage in display panels based on experience is low. Summary of the Invention

[0004] This disclosure provides a method, apparatus, system, and testing fixture for determining the degree of light leakage in a display panel, which can solve the problem of low reliability in related technologies where testing personnel rely on experience to judge the severity of light leakage in a display panel. The technical solution is as follows:

[0005] On one hand, a method for determining the degree of light leakage in a display panel is provided, applied to a light leakage detection device, wherein the display area of ​​the display panel includes multiple sub-regions; the method includes:

[0006] When the display area displays the target color, the brightness of each of the sub-regions is obtained;

[0007] If a light leakage sub-region is detected in the plurality of sub-regions, the light leakage degree of the display panel is determined based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region.

[0008] Optionally, the brightness of the light-leaking sub-region is greater than or equal to a brightness threshold, and the degree of light leakage is positively correlated with the brightness of the light-leaking sub-region and negatively correlated with the average brightness of the plurality of sub-regions.

[0009] Optionally, the brightness threshold L satisfies: L=L0+J;

[0010] Wherein, L0 is the average brightness of the plurality of sub-regions, and J is the minimum visual difference in brightness.

[0011] Optionally, the minimum brightness visual difference J satisfies:

[0012] Alternatively, the minimum visual difference J in brightness satisfies: J = K × L0;

[0013] Wherein, n is an integer greater than or equal to 3, K0 is greater than or equal to 0.01 and less than or equal to 0.05, K1 is greater than or equal to 0.01 and less than or equal to 0.03, K2 is greater than or equal to 0 and less than or equal to 0.001, and K is greater than or equal to 0.01 and less than or equal to 0.03.

[0014] Optionally, n equals 3, and K3 is greater than or equal to 0 and less than or equal to 0.001.

[0015] Optionally, the target color is black.

[0016] Optionally, determining the light leakage level of the display panel based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region includes:

[0017] Determine a first ratio between the brightness of the light-leaking sub-region and the average brightness of the plurality of sub-regions;

[0018] Determine a second ratio between the area of ​​the photoleakage region and the area of ​​the display region;

[0019] The light leakage degree of the display panel is determined based on the first ratio and the second ratio, wherein the light leakage degree is positively correlated with the first ratio and the second ratio.

[0020] Optionally, at least two of the multiple sub-regions contain light leakage sub-regions; determining the light leakage degree of the display panel based on the first ratio and the second ratio includes:

[0021] The product of the first ratio and the second ratio for each of the photon leakage regions is determined to obtain at least two products;

[0022] The light leakage level of the display panel is determined based on the sum of the at least two products.

[0023] Optionally, when acquiring the image of the target color displayed in the display area, the brightness of each sub-region includes:

[0024] The first brightness of each sub-region when the display area displays the target color without applying force to the display panel, and the second brightness of each sub-region when the display area displays the target color with force applied to the display panel by a test fixture;

[0025] Determining the light leakage level of the display panel based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region includes:

[0026] A first light leakage degree of the display panel is determined based on the average value of the first brightness of the plurality of sub-regions and the first brightness of the light leakage sub-region; and a second light leakage degree of the display panel is determined based on the average value of the second brightness of the plurality of sub-regions and the second brightness of the light leakage sub-region.

[0027] The method further includes:

[0028] Based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under the applied force, a first light leakage sensitivity caused by a unit deformation is determined. The first light leakage sensitivity is negatively correlated with both the first light leakage degree and the deformation, and positively correlated with the second light leakage degree.

[0029] Optionally, the first light leakage sensitivity ΔM satisfies:

[0030] Wherein, M1 is the second light leakage degree, M0 is the first light leakage degree, and f is the deformation.

[0031] Optionally, the step of obtaining the second brightness of each sub-region when the display area displays a target color image while applying force to the display panel through a test fixture includes:

[0032] When a first force is applied to the display panel through the test fixture, the first target brightness of each sub-region is obtained when the display area displays the target color; and when a second force is applied to the display panel through the test fixture, the second target brightness of each sub-region is obtained when the display area displays the target color, wherein the direction of the first force and the direction of the second force are opposite.

[0033] Determining the second light leakage degree of the display panel based on the average second brightness of the plurality of sub-regions and the second brightness of the light leakage sub-regions includes:

[0034] Based on the average value of the first target brightness of the plurality of sub-regions and the first target brightness of the light leakage sub-region, the first target light leakage degree of the display panel is determined, and based on the average value of the second target brightness of the plurality of sub-regions and the second target brightness of the light leakage sub-region, the second target light leakage degree of the display panel is determined;

[0035] The determination of the first light leakage sensitivity per unit deformation based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under the applied force includes:

[0036] Based on the first light leakage degree, the first target light leakage degree, and the first deformation of the display panel under the first force, a first reference light leakage sensitivity caused by a unit of the first deformation is determined, and based on the first light leakage degree, the second target light leakage degree, and the second deformation of the display panel under the second force, a second reference light leakage sensitivity caused by a unit of the second deformation is determined.

[0037] The method further includes:

[0038] The average value of the first reference light leakage sensitivity and the second reference light leakage sensitivity is determined as the second light leakage sensitivity caused by a unit of first deformation and a unit of second deformation.

[0039] On the other hand, a device for determining the light leakage degree of a display panel is provided, applied to a light leakage detection device, wherein the display area of ​​the display panel includes multiple sub-regions; the device includes:

[0040] The acquisition module is used to acquire the brightness of each sub-region when the display area displays an image of the target color;

[0041] The determination module is used to determine the degree of light leakage of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region if a light leakage sub-region is detected in the multiple sub-regions.

[0042] In another aspect, a test fixture for a display panel is provided, the test fixture comprising: a hollow frame, an adjustment component, and an external force application component;

[0043] The frame is used to fix the display panel;

[0044] The adjustment component is movably connected to the frame and fixedly connected to the external force application component. The adjustment component is used to adjust the position of the external force application component within the frame.

[0045] The external force application component is used to apply a force to the display panel.

[0046] Optionally, the test fixture may further include a first fixing plate and a second fixing plate;

[0047] The first fixing plate and the first side of the frame are used to clamp the first side of the display panel;

[0048] The second fixing plate and the second side of the frame are used to clamp the second side of the display panel;

[0049] The adjustment assembly includes a first adjustment rod and at least one fixing member. The first adjustment rod is provided with at least one first through hole, and the third side of the frame is provided with a plurality of adjustment holes. Each fixing member is used to pass through one of the first through holes and connect to one of the adjustment holes.

[0050] The first side and the third side intersect the second side, respectively.

[0051] Optionally, the test fixture may further include a first bolt and a second bolt;

[0052] A second through hole is provided on both the first fixing plate and the first side of the frame, and the first bolt is used to pass through the first through hole and connect to the first side of the frame;

[0053] Both the second fixing plate and the second side of the frame are provided with a third through hole, and the second bolt is used to pass through the third through hole and connect to the second side of the frame.

[0054] Optionally, the external force application assembly includes: a third fixing plate, a second adjusting rod, a clamping member, a contact member, and an adjusting member;

[0055] The third fixing plate is fixedly connected to the first adjusting rod, and the third fixing plate is provided with a fourth through hole. One end of the second adjusting rod is used to pass through the fourth through hole, and the other end of the second adjusting rod is used to adjust the length of the part of the second adjusting rod that extends out of the fourth through hole.

[0056] The clamping member is fixedly connected to the contact member, and the clamping member is used to clamp the display panel;

[0057] The adjusting member is connected to the first adjusting rod and the clamping member respectively. The adjusting member is used to adjust the position of the clamping member in a direction perpendicular to the display surface of the display panel, so that the contact member fixedly connected to the clamping member contacts one end of the second adjusting rod.

[0058] Optionally, the adjusting component includes: a fourth fixing plate and a first screw;

[0059] The fourth fixing plate is fixedly connected to the first adjusting rod. The fourth fixing plate is provided with a sixth through hole. One end of the first screw passes through the sixth through hole and is fixedly connected to the clamping member. The first screw is used to adjust the position of the clamping member along a direction perpendicular to the display surface of the display panel.

[0060] Optionally, the clamping member includes two fifth fixing plates that are disposed opposite to each other and fixedly connected, a second screw, and a movable plate located between the two fifth fixing plates;

[0061] One of the fifth fixed plates is provided with a seventh through hole, and one end of the second screw passes through the seventh through hole and is fixedly connected to the movable plate. The second screw is used to adjust the distance between the movable plate and any of the fifth fixed plates.

[0062] In another aspect, a system for determining the light leakage level of a display panel is provided, the system comprising: a device for determining the light leakage level of a display panel as described above, and a test fixture as described above.

[0063] In another aspect, a computer-readable storage medium is provided, wherein instructions are stored therein, which are loaded and executed by a processor to implement the method for determining the light leakage level of a display panel as described above.

[0064] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0065] This disclosure provides a method, apparatus, system, and testing fixture for determining the light leakage level of a display panel. When a light leakage detection device detects light leakage sub-regions within multiple sub-regions of a display panel, it can determine the light leakage level of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of light leakage by inspectors, the method provided in this disclosure effectively improves the reliability and accuracy of determining the light leakage level of a display panel because the light leakage detection device can automatically determine the light leakage level of the display panel based on the brightness of the sub-regions. Attached Figure Description

[0066] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 This is a flowchart of a method for determining the light leakage level of a display panel according to an embodiment of this disclosure;

[0068] Figure 2 This is a flowchart of another method for determining the light leakage level of a display panel provided in this embodiment of the present disclosure;

[0069] Figure 3 This is a schematic diagram of multiple detection points provided in an embodiment of this disclosure;

[0070] Figure 4 This is a flowchart of another method for determining the light leakage degree of a display panel provided in this disclosure embodiment;

[0071] Figure 5 This is a flowchart of another method for determining the light leakage level of a display panel provided in this disclosure embodiment;

[0072] Figure 6 This is a schematic diagram of the average brightness of a display area and the brightness of a light-leaking sub-region provided in an embodiment of this disclosure;

[0073] Figure 7 This is a schematic diagram illustrating the relationship between the average brightness and the minimum brightness difference of a display area, provided in an embodiment of this disclosure.

[0074] Figure 8 This is a block diagram of a device for determining the light leakage level of a display panel according to an embodiment of this disclosure;

[0075] Figure 9 This is a block diagram of a determining module provided in an embodiment of this disclosure;

[0076] Figure 10 This is a schematic diagram of the structure of a test fixture for a display panel provided in an embodiment of this disclosure;

[0077] Figure 11 This is a schematic diagram of the structure of another test fixture for a display panel provided in an embodiment of this disclosure;

[0078] Figure 12 This is a top view of an adjustment component and an external force application component provided in an embodiment of this disclosure;

[0079] Figure 13 This is a top view of a test fixture for a display panel provided in an embodiment of this disclosure;

[0080] Figure 14 This is a schematic diagram of the structure of an adjustment component and an external force application component provided in an embodiment of this disclosure;

[0081] Figure 15 This is a schematic diagram of the structure of an external force application component provided in an embodiment of this disclosure;

[0082] Figure 16 This is a schematic diagram of a system for determining the light leakage level of a display panel according to an embodiment of this disclosure;

[0083] Figure 17 This is a schematic diagram of the structure of a light leakage detection device provided in an embodiment of this disclosure.

[0084] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0085] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0086] Figure 1 This is a flowchart illustrating a method for determining the degree of light leakage in a display panel according to an embodiment of this disclosure. This method can be applied to a light leakage detection device, which can be a device with data processing capabilities, such as a computer. Figure 1 As shown, the method may include:

[0087] Step 101: Obtain the brightness of each sub-region when the display area shows the target color.

[0088] In this embodiment, the display area of ​​the display panel can be divided into multiple sub-regions, the sum of the areas of the multiple sub-regions being equal to the area of ​​the display area. During light leakage detection, the display area of ​​the display panel can be controlled to display an image of the target color. The light leakage detection device can acquire the brightness of each sub-region when the display area displays an image of the target color.

[0089] In this embodiment of the disclosure, the light leakage detection device can establish a connection with a brightness detection device. The brightness detection device can detect the brightness of each sub-region when the display area displays an image of the target color, and can send the brightness of each sub-region to the light leakage detection device. Each sub-region may include one or more pixels.

[0090] Optionally, the brightness detection device can be a surface imaging optical device or a point measurement optical device. The surface imaging optical device has a detection accuracy at the micrometer level, meaning it can detect the brightness of pixels at the micrometer level. The point measurement optical device has a detection accuracy at the millimeter level, meaning it can detect the brightness of detection points at the millimeter level.

[0091] Step 102: Detect whether there are light-leaking sub-regions in multiple sub-regions.

[0092] After acquiring the brightness of multiple sub-regions, the light leakage detection device can detect whether there are any light leakage sub-regions within those sub-regions based on their brightness. If a light leakage sub-region is detected, the device can proceed to step 103. If no light leakage sub-region is detected, it can be determined that the display panel does not leak light, and the process ends.

[0093] Optionally, the light leakage detection device can detect whether there are any sub-regions with a brightness greater than or equal to a brightness threshold among the multiple sub-regions. If they exist, the light leakage detection device can identify the sub-region with a brightness greater than or equal to the brightness threshold as a light leakage sub-region. If they do not exist, the light leakage detection device can determine that there are no light leakage sub-regions among the multiple sub-regions, and thus determine that the display panel does not leak light.

[0094] Step 103: Determine the light leakage level of the display panel based on the average brightness of multiple sub-regions and the brightness of the light leakage sub-regions.

[0095] After identifying light leakage sub-regions in multiple sub-regions, the light leakage detection device can determine the average brightness of these multiple sub-regions, and based on the average brightness of these multiple sub-regions and the brightness of the light leakage sub-regions, determine the degree of light leakage of the display panel.

[0096] The light leakage degree of the display panel is positively correlated with the brightness of the light leakage sub-region and negatively correlated with the average brightness of multiple sub-regions. That is, the higher the brightness of the light leakage sub-region, the lower the average brightness of the multiple sub-regions, and the more severe the light leakage degree of the display panel; the lower the brightness of the light leakage sub-region, the higher the average brightness of the multiple sub-regions, and the less severe the light leakage degree of the display panel.

[0097] In summary, this disclosure provides a method for determining the degree of light leakage in a display panel. When a light leakage detection device detects light leakage sub-regions within multiple sub-regions of the display panel, it can determine the degree of light leakage based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of light leakage by inspectors, the method provided in this disclosure effectively improves the reliability and accuracy of determining the degree of light leakage in a display panel because the light leakage detection device can automatically determine the degree of light leakage based on the brightness of the sub-regions.

[0098] Figure 2 This is a flowchart illustrating another method for determining the degree of light leakage in a display panel, provided in an embodiment of this disclosure. This method can be applied to a light leakage detection device, which can be a computer. Figure 2 As shown, the method may include:

[0099] Step 201: Obtain the brightness of each sub-region when the display area shows the target color.

[0100] In this embodiment, the display area of ​​the display panel can be divided into multiple sub-regions. During light leakage detection, the display area of ​​the display panel can be controlled to display an image of a target color. The light leakage detection device can acquire the brightness of each sub-region when the display area displays the target color image. Optionally, the target color can be black, thereby increasing the brightness difference between the light leakage sub-region and other sub-regions when light leakage sub-regions exist among multiple sub-regions, ensuring the reliability of the identified light leakage sub-regions.

[0101] In this embodiment of the disclosure, the light leakage detection device can establish a connection with a brightness detection device. The brightness detection device can detect the brightness of each sub-region when the display area displays an image of the target color, and can send the brightness of each sub-region to the light leakage detection device. Each sub-region may include one or more pixels.

[0102] Optionally, the brightness detection device can be a surface imaging optical device or a point measurement optical device. The surface imaging optical device has a detection accuracy at the micrometer level, meaning it can detect the brightness of pixels at the micrometer level. The point measurement optical device has a detection accuracy at the millimeter level, meaning it can detect the brightness of detection points at the millimeter level.

[0103] If the brightness detection device is a planar imaging optical device, it can detect the brightness of each pixel in the display area when the target color is displayed. Then, the brightness detection device can determine the average brightness of the multiple pixels as the brightness of the sub-region composed of those pixels, and transmit the brightness of this sub-region to the light leakage detection device. Accordingly, the brightness of each sub-region obtained by the light leakage detection device is the average brightness of the multiple pixels included in that sub-region.

[0104] Alternatively, the brightness detection device can directly transmit the brightness of each detected pixel to the light leakage detection device. The light leakage detection device can then determine the brightness of each sub-region based on the sub-region division method and the brightness of each pixel.

[0105] If the brightness detection device is a point-type optical measurement device, it can detect the brightness of each detection point in the display area when the target color is displayed, and transmit the brightness of each detection point to the light leakage detection device. In this scenario, the sub-regions included in the display area can be divided based on the position of the detection points, and each sub-region can include one or more detection points. If each sub-region includes one detection point, the detection point can be located at the center point of the sub-region. Accordingly, the light leakage detection device can determine the brightness of each detection point as the brightness of the sub-region where the detection point is located. If the sub-region includes multiple detection points, the light leakage detection device can determine the average brightness of the multiple detection points as the brightness of the sub-region.

[0106] Figure 3 This is a schematic diagram of multiple detection points provided in an embodiment of this disclosure. For example... Figure 3 As shown, this point-based measurement optical device can detect the brightness of multiple detection points in the display area 00. The number of detection points that the point-based measurement optical device can detect is related to its performance. Furthermore, since the area of ​​the display area 00 is fixed, the more detection points the point-based measurement optical device can detect, the more sub-regions the display area 00 can be divided into, the smaller the area of ​​each sub-region, and the higher the accuracy of brightness detection.

[0107] Step 202: Detect whether there are light-leaking sub-regions in multiple sub-regions.

[0108] After acquiring the brightness of multiple sub-regions, the light leakage detection device can detect whether there are any light leakage sub-regions within those sub-regions based on their brightness. If a light leakage sub-region is detected, the light leakage detection device can proceed to step 203. If no light leakage sub-region is detected, it can be determined that the display panel does not leak light, and the process ends.

[0109] In this embodiment of the disclosure, the light leakage detection device can detect whether there is a sub-region with a brightness greater than or equal to a brightness threshold among the plurality of sub-regions. If it exists, the light leakage detection device can identify the sub-region with a brightness greater than or equal to the brightness threshold as a light leakage sub-region. If it does not exist, the light leakage detection device can determine that there is no light leakage sub-region among the plurality of sub-regions.

[0110] Optionally, the brightness threshold L can satisfy: L = L0 + J, where L0 is the average brightness of the multiple sub-regions, and J is the minimum perceptible brightness difference. This minimum perceptible brightness difference is the minimum increment of the light leakage sub-region that the human eye can perceive when the average brightness of the multiple sub-regions is L0. By using the brightness of the multiple sub-regions to determine the brightness threshold, compared to using a fixed brightness threshold, the flexibility and reliability of the brightness threshold determination are improved, thereby increasing the reliability of the determined light leakage sub-regions.

[0111] Optionally, the minimum visual difference J of brightness can satisfy: Alternatively, the minimum visual difference J of brightness can satisfy: J = K × L0.

[0112] Where n is an integer greater than or equal to 3. For example, n can be 3. K0 is greater than or equal to 0.01 and less than or equal to 0.05. K1 is greater than or equal to 0.01 and less than or equal to 0.03. K2 is greater than or equal to 0 and less than or equal to 0.001. When n is 3, K3 is greater than or equal to 0 and less than or equal to 0.001. K is greater than or equal to 0.01 and less than or equal to 0.03. For example, K0 can be equal to 0.02889, K1 can be equal to 0.02087, K2 can be equal to 0.000891, and when n is 3, K3 can be equal to 0.000031.

[0113] Step 203: Determine the first ratio of the brightness of the light-leaking sub-region to the average brightness of multiple sub-regions.

[0114] After detecting light leakage sub-regions in multiple sub-regions, the light leakage detection device can determine the average brightness of the multiple sub-regions and a first ratio A between the brightness L of the light leakage sub-region and the average value L0. This first ratio A satisfies:

[0115] It is understandable that if there are multiple light leakage sub-regions in the multiple sub-regions, then for each light leakage sub-region, the light leakage detection device can determine the first ratio A of the brightness of the light leakage sub-region to the average value L0, thereby obtaining multiple first ratios A.

[0116] In one optional implementation of this disclosure, if multiple light leakage sub-regions exist within the multiple sub-regions, and the brightness of these multiple light leakage sub-regions is within the same brightness range, the light leakage detection device can use the brightness of the light leakage sub-region with the median brightness to represent the brightness of the multiple light leakage sub-regions. Accordingly, the light leakage detection device only needs to calculate a first ratio A for one light leakage sub-region, and can determine this first ratio A as the first ratio for other light leakage sub-regions. This effectively reduces computational complexity. The light leakage detection device pre-stores multiple brightness ranges. The median brightness is the median value of the multiple brightness values ​​of the multiple light leakage sub-regions within the same brightness range, arranged in ascending order.

[0117] In another optional implementation of this disclosure, if multiple light leakage sub-regions exist within the plurality of sub-regions, and the brightness of at least two light leakage sub-regions is different from each other, the light leakage detection device can divide the plurality of light leakage sub-regions into multiple light leakage sub-region groups. Each light leakage sub-region group includes one or more light leakage sub-regions, and the brightness of each light leakage sub-region within each group is within the same brightness range. Accordingly, the light leakage detection device can determine the brightness of each light leakage sub-region group, and then determine a first ratio A for each light leakage sub-region group.

[0118] In this implementation, on the one hand, the light leakage detection device can group multiple light leakage sub-regions based on pre-stored fixed brightness ranges. Furthermore, the brightness of each group of light leakage sub-regions can be the brightness of the light leakage sub-region with the median brightness within that group, or it can be the average of the brightness range within which the group of light leakage sub-regions is located. The average of the brightness range refers to the average of the upper and lower brightness values ​​within that range. The median brightness is the median value of the multiple brightness values ​​of the multiple light leakage sub-regions included in a light leakage sub-region group, arranged in ascending order.

[0119] On the other hand, the light leakage detection device can determine the minimum brightness L in these multiple sub-regions. min and maximum brightness L max Based on the minimum and maximum brightness, N brightness ranges are determined, and multiple leaky photon regions can be grouped based on these N brightness ranges.

[0120] For example, the lower limit of the h-th brightness range in the N brightness ranges divided by the light leakage detection device in ascending order of brightness can be L. min +(h-1)×G, the upper limit of brightness can be L. max +h×G, where h is a positive integer not greater than N. Furthermore, the brightness of a group of leaky photon regions whose brightness falls within the h-th brightness range can be...

[0121] Step 204: Determine the second ratio of the area of ​​the photoleakage region to the area of ​​the display region.

[0122] The light leakage detection device can also determine that a second ratio X between the area S of the light leakage sub-region and the area S0 of the display area satisfies:

[0123] It is understandable that if there are multiple light leakage sub-regions in the multiple sub-regions, then for each light leakage sub-region, the light leakage detection device can determine a second ratio X between the area of ​​the light leakage sub-region and the area S0 of the display area, thereby obtaining multiple second ratios X.

[0124] If multiple light leakage sub-regions exist within the multiple sub-regions, and these multiple light leakage sub-regions are divided into multiple light leakage sub-region groups, the light leakage detection device can further determine the area of ​​each light leakage sub-region group, and then determine the second ratio X of each light leakage sub-region group. The area of ​​each light leakage sub-region group can be equal to the sum of the areas of all the light leakage sub-regions included in that group.

[0125] Optionally, in this embodiment of the disclosure, the area of ​​the photoleakage sub-region can be represented by the number of pixels included in the photoleakage sub-region, and the area of ​​the display area can be represented by the number of pixels included in the display area.

[0126] Step 205: Determine the light leakage level of the display panel based on the first ratio and the second ratio.

[0127] After determining the first ratio and the second ratio, the light leakage detection device can determine the degree of light leakage of the display panel based on the first ratio and the second ratio. The degree of light leakage of the display panel is positively correlated with both the first and second ratios. That is, the larger the first ratio, the more severe the light leakage of the display panel; the smaller the first ratio, the less severe the light leakage. Similarly, the larger the second ratio, the more severe the light leakage; the smaller the second ratio, the less severe the light leakage. For example, the degree of light leakage M of the display panel can satisfy the following condition: M = A × X.

[0128] In this embodiment of the disclosure, if there are multiple light leakage sub-regions in the multiple sub-regions, the light leakage detection device can determine the product of the first ratio and the second ratio of each light leakage sub-region to obtain multiple products, and determine the light leakage degree of the display panel based on the sum of the multiple products.

[0129] For example, assuming that the multiple sub-regions include P (P is an integer greater than 1) light leakage sub-regions, the light leakage detection device can determine that the light leakage degree M of the display panel satisfies:

[0130]

[0131] Among them, A i X is the first ratio of the brightness of the i-th leaky sub-region to the average brightness of multiple sub-regions. i It is the second ratio of the area of ​​the i-th leaky photon region to the area of ​​the display region, where i is an integer greater than 0 and less than or equal to P.

[0132] Alternatively, assuming that the P light-leaking sub-regions can be divided into Z (Z is an integer greater than 1) groups of light-leaking sub-regions, then the light leakage detection device can determine that the light leakage degree M of the display panel satisfies:

[0133]

[0134] Among them, A v X is the first ratio of the brightness of the v-th leaky sub-region group to the average brightness L0 of the multiple sub-regions. v It is the second ratio of the area of ​​the vth leaky photon region group to the area of ​​the display area, where v is an integer greater than 0 and less than or equal to Z.

[0135] In this embodiment of the disclosure, multiple light leakage sub-regions are divided into multiple groups according to brightness, and the light leakage degree of the display panel is determined based on the brightness and area of ​​the multiple groups of light leakage sub-regions. This can effectively reduce the computational complexity while ensuring the reliability of the determined light leakage degree.

[0136] In summary, the embodiments of this disclosure provide a method for determining the degree of light leakage of a display panel. When a light leakage detection device detects the presence of light leakage sub-regions in multiple sub-regions, it can determine the degree of light leakage of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of the degree of light leakage by inspection personnel, the method provided by the embodiments of this disclosure effectively improves the reliability and accuracy of determining the degree of light leakage of a display panel.

[0137] Figure 4 This is a flowchart illustrating another method for determining the degree of light leakage in a display panel, provided in an embodiment of this disclosure. This method can be applied to a light leakage detection device, which can be a computer. Figure 4 As shown, the method may include:

[0138] Step 401: Without applying any force to the display panel, obtain the first brightness of each sub-region when the display area displays the target color.

[0139] In this embodiment of the disclosure, without applying any force to the display panel, the light leakage detection device can obtain the first brightness of each sub-region when the display area displays a picture of the target color.

[0140] Step 402: Detect whether there are light leakage sub-regions in the multiple sub-regions obtained without applying force to the display panel.

[0141] After acquiring the first brightness of each area, the light leakage detection device can detect whether there are light leakage sub-regions in the multiple sub-regions acquired without applying force to the display panel. If a light leakage sub-region is detected in the multiple sub-regions acquired without applying force to the display panel, the light leakage detection device can proceed to step 403. If no light leakage sub-region is detected in the multiple sub-regions acquired without applying force to the display panel, the light leakage detection device can determine the first light leakage level of the display panel as 0 and proceed to step 407.

[0142] Step 403: Determine the first light leakage degree of the display panel based on the average value of the first brightness of multiple sub-regions and the first brightness of the light leakage sub-region.

[0143] After detecting the presence of light leakage sub-regions in multiple sub-regions acquired without applying force to the display panel, the light leakage detection device can determine the average value of the first brightness of the multiple sub-regions, and determine the first light leakage degree of the display panel based on the average value of the first brightness of the multiple sub-regions and the first brightness of the light leakage sub-region. Then, the light leakage detection device can perform step 407.

[0144] In this embodiment of the disclosure, without applying any force to the display panel, when the light leakage detection device detects light leakage sub-regions in multiple sub-regions, it can determine the degree of light leakage of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared with the manual determination of the light leakage degree of the display panel by inspection personnel in related technologies, this effectively improves the reliability, accuracy, and efficiency of determining the light leakage degree of the display panel.

[0145] Step 404: While applying force to the display panel through the test fixture, obtain the second brightness of each sub-region when the display area displays the target color.

[0146] When a force is applied to the display panel using a test fixture, the light leakage detection device can also acquire the second brightness of each sub-region when the display area displays the target color. The direction of the applied force is perpendicular to the surface of the display panel.

[0147] Step 405: Detect whether there are light leakage sub-regions in multiple sub-regions when a force is applied to the display panel.

[0148] When a force is applied to the display panel using a test fixture, the light leakage detection device, after acquiring the second brightness of each sub-region when the display area shows the target color, can detect whether there are light leakage sub-regions in multiple sub-regions under the condition of applying force to the display panel. If a light leakage sub-region is detected among the multiple sub-regions acquired under the condition of applying force to the display panel, the light leakage detection device can proceed to step 406. If no light leakage sub-region is detected among the multiple sub-regions acquired under the condition of applying force to the display panel, the process can end.

[0149] Step 406: Determine the second light leakage degree of the display panel based on the average value of the second brightness of multiple sub-regions and the second brightness of the light leakage sub-region.

[0150] After the light leakage detection device detects the presence of light leakage sub-regions in multiple sub-regions acquired when a force is applied to the display panel, it can determine the second degree of light leakage of the display panel based on the average second brightness of the multiple sub-regions and the second brightness of the light leakage sub-regions.

[0151] In this embodiment, after the display panel is installed in the display device, the components surrounding the display panel may exert forces on it. This could result in a situation where the display panel had no light leakage before installation, but develops light leakage after installation. Alternatively, the light leakage might be minor before installation but more severe after installation. The method provided in this embodiment applies forces to the display panel using a test fixture to simulate the forces exerted on it by the surrounding components after installation. This allows the light leakage detection device to predict the degree of light leakage after installation. For display panels with predicted severe light leakage, inspectors can promptly repair them, preventing severe light leakage after installation and ensuring the reliability of the display device.

[0152] Step 407: Based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under force, determine the first light leakage sensitivity caused by the unit deformation.

[0153] After determining the first and second light leakage levels, the light leakage detection device can determine the first light leakage sensitivity per unit deformation based on these levels and the deformation of the display panel under the applied force. This allows for the prediction of the impact of the unit deformation on the light leakage level of the display panel. Specifically, the first light leakage sensitivity is negatively correlated with both the first light leakage level and the deformation, and positively correlated with the second light leakage level. For example, the deformation can be 1 millimeter (mm).

[0154] Optionally, the first light leakage sensitivity ΔM can satisfy: Wherein, M1 is the second light leakage level, M0 is the first light leakage level, and f is the deformation.

[0155] The specific implementation process of steps 401 to 406 above can be referred to the relevant description of steps 301 to 305 above, and will not be repeated in this embodiment.

[0156] In summary, the embodiments of this disclosure provide a method for determining the degree of light leakage in a display panel. When a light leakage detection device detects light leakage sub-regions in multiple sub-regions, it can determine the degree of light leakage in the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of the degree of light leakage by inspection personnel, the solution provided in this application effectively improves the reliability and accuracy of determining the degree of light leakage in a display panel.

[0157] After the display panel is installed into the display device, it is subjected to pressure from surrounding foam in a first direction and tension from tape in a second direction. Both directions are perpendicular to the surface of the display panel and are opposite in direction. The following embodiment will illustrate this by using the application of a first force and a second force to the display panel via a test fixture to determine the second light leakage sensitivity caused by unit deformation. This will predict the degree of light leakage caused by unit deformation under forces in two different directions after the display panel is installed into the display device.

[0158] Figure 5 This is a flowchart illustrating another method for determining the degree of light leakage in a display panel, provided in an embodiment of this disclosure. This method can be applied to a light leakage detection device, which can be a computer. Figure 5 As shown, the method may include:

[0159] Step 501: When a first force is applied to the display panel through the test fixture, the first target brightness of each sub-region is obtained when the display area displays the target color.

[0160] In this embodiment of the disclosure, the second brightness may include a first target brightness and a second target brightness.

[0161] Step 502: Detect whether there are light leakage sub-regions in multiple sub-regions when a first force is applied to the display panel.

[0162] After acquiring the first target brightness of each area, the light leakage detection device can detect whether there are light leakage sub-regions in the multiple sub-regions acquired under the condition of applying a first force to the display panel. If a light leakage sub-region is detected in the multiple sub-regions acquired under the condition of applying a first force to the display panel, the light leakage detection device can proceed to step 503. If no light leakage sub-region is detected in the multiple sub-regions acquired without applying a first force to the display panel, the process can end.

[0163] Step 503: Determine the first target light leakage degree of the display panel based on the average value of the first target brightness of multiple sub-regions and the first target brightness of the light leakage sub-region.

[0164] In this embodiment of the disclosure, the second light leakage level may include a first target light leakage level and a second target light leakage level.

[0165] Step 504: Based on the first light leakage degree, the first target light leakage degree, and the first deformation of the display panel under the first force, determine the first reference light leakage sensitivity caused by the unit first deformation.

[0166] Optionally, the first reference leakage sensitivity Δm1 can satisfy: Wherein, m1 represents the first target light leakage degree, M0 represents the first light leakage degree, and f1 represents the first deformation, which can be 1 mm. In this embodiment of the present disclosure, the aforementioned first light leakage sensitivity may include a first reference light leakage sensitivity and a second reference light leakage sensitivity.

[0167] Step 505: When a second force is applied to the display panel through the test fixture, the second target brightness of each sub-region is obtained when the display area displays the target color.

[0168] The direction of the second force is opposite to that of the first force, and the magnitude of the second force may be the same as or different from that of the first force.

[0169] Step 506: Detect whether there are light leakage sub-regions in multiple sub-regions when a second force is applied to the display panel.

[0170] After acquiring the second target brightness of each area, the light leakage detection device can detect whether there are light leakage sub-regions in the multiple sub-regions acquired under the condition of applying a second force to the display panel. If a light leakage sub-region is detected in the multiple sub-regions acquired under the condition of applying a second force to the display panel, the light leakage detection device can proceed to step 507. If no light leakage sub-region is detected in the multiple sub-regions acquired without applying a second force to the display panel, the process can end.

[0171] Step 507: Determine the second target light leakage degree of the display panel based on the average value of the second target brightness of multiple sub-regions and the second target brightness of the light leakage sub-region.

[0172] Step 508: Based on the first light leakage degree, the second target light leakage degree, and the second deformation of the display panel under the second force, determine the second reference light leakage sensitivity caused by the unit second deformation.

[0173] Optionally, the second reference leakage sensitivity Δm2 can satisfy: Wherein, m2 is the light leakage degree of the second target, M0 is the light leakage degree of the first target, and f2 is the second deformation, which can be 1 mm.

[0174] Step 509: Determine the average value of the first reference light leakage sensitivity and the second reference light leakage sensitivity as the second light leakage sensitivity caused by a unit of first deformation and a unit of second deformation.

[0175] In this embodiment, after determining the first reference light leakage sensitivity and the second reference light leakage sensitivity, the light leakage detection device can determine the average value of the first reference light leakage sensitivity and the second reference light leakage sensitivity as the second light leakage sensitivity caused by a unit first deformation and a unit second deformation. This second light leakage sensitivity Δm can satisfy:

[0176] The specific implementation process of steps 501 to 508 can be referred to steps 301 to 305 and step 407 above. The embodiments disclosed herein will not be repeated here.

[0177] In this embodiment, the display panel can be a liquid crystal display panel, which may include a first glass substrate and a second glass substrate located on both sides of the liquid crystal. Referring to Table 1, if the thickness of the first glass substrate is 0.4 mm and the thickness of the second glass substrate is 0.5 mm, the light leakage detection device can determine that after applying a first force and a second force to the display panel through the test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 15.96%.

[0178] If the thickness of the first glass substrate and the thickness of the second glass substrate are both 0.3 mm, the light leakage detection device can determine that after applying the first force and the second force to the display panel through the test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 8.41%. Since this 8.41% is less than 15.96%, it can be determined that after reducing the thickness of the first glass substrate and the thickness of the second glass substrate, the light leakage of the display panel is reduced.

[0179] Table 1

[0180]

[0181] Referring to Table 1, before the glass substrate is thinned, the light leakage sensitivity of the display panel determined by the method provided in this embodiment is ranked as 2, which is considered poor by human observation. After the glass substrate is thinned, the light leakage degree of the display panel determined by the method provided in this embodiment is ranked as 1, which is considered good by human observation. Therefore, ranking result 1 > ranking result 2. It can be seen that the light leakage sensitivity of the display panel determined by the method provided in this embodiment is basically consistent with the results observed by human eyes.

[0182] Referring to Table 2, if the first type of sealant is used in the display panel, and the Young's modulus of the first type of sealant is greater than or equal to 3.0 and less than or equal to 3.2, the light leakage detection device can determine that after applying the first force and the second force to the display panel through the test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 26.08%.

[0183] If the second type of sealant is used in the display panel, and the Young's modulus of the second type of sealant is greater than or equal to 2.0 and less than or equal to 2.2, the light leakage detection device can determine that after applying the first force and the second force to the display panel through the test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 20.72%.

[0184] If the third type of sealant is used in the display panel, and the Young's modulus of the third type of sealant is greater than or equal to 1.5 and less than or equal to 1.7, the light leakage detection device can determine that after applying the first force and the second force to the display panel through the test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 15.47%.

[0185] If the display panel uses a type 4 sealant with a Young's modulus greater than or equal to 0.8 and less than or equal to 1.0, the light leakage detection equipment can determine that after applying a first force and a second force to the display panel through a test fixture, the second light leakage sensitivity caused by the unit first deformation and the unit second deformation is 13.87%. Therefore, it can be seen that reducing the Young's modulus of the sealant can effectively improve the light leakage level of the display panel.

[0186] Table 2

[0187]

[0188] Referring to Table 2, it can be seen that for the display panel using the first type of sealant, the light leakage sensitivity ranking result determined by the method provided in this embodiment is 4, which is considered very poor by the human eye; for the display panel using the second type of sealant, the light leakage sensitivity ranking result determined by the method provided in this embodiment is 3, which is also considered very poor by the human eye; for the display panel using the third type of sealant, the light leakage sensitivity ranking result determined by the method provided in this embodiment is 2, which is considered good by the human eye; and for the display panel using the fourth type of sealant, the light leakage sensitivity ranking result determined by the method provided in this embodiment is 1, which is considered good by the human eye. The ranking result is: 1 > 2 > 3 > 4.

[0189] As shown in Table 2, the light leakage sensitivity of the display panel determined by the method provided in this embodiment is basically consistent with the results observed by the human eye. Furthermore, for the display panel using the first type of sealant, the ranking result of the light leakage sensitivity determined by the method provided in this embodiment is 4; for the display panel using the second type of sealant, the ranking result is 3. However, the results observed by the human eye for both the display panel using the first type of sealant and the display panel using the second type of sealant are very poor. This indicates that the human eye cannot further distinguish between these similar levels of light leakage sensitivity, while the method provided in this embodiment can accurately distinguish the light leakage sensitivity of the display panel when the sealant is of the first type or the second type.

[0190] As can be seen from the above analysis, when the light leakage sensitivity of the display panel is predicted to be severe using the method provided in this embodiment, the light leakage path of the display panel can be improved by reducing the thickness of the glass substrates on both sides of the liquid crystal, and / or the light leakage sensitivity of the display panel can be improved by reducing the Young's modulus of the sealant, thereby reducing the light leakage degree of the display panel. It should be noted that the above-mentioned human eye observation results are the result of the human eye's evaluation of the light leakage degree of the display panel installed on the display device, and the display panel did not have light leakage before being installed on the display device.

[0191] The following explains how to determine whether a sub-region is a light leakage sub-region. The optical characteristic of light leakage is that, when displaying an image of the target color, there are areas around the display area with a brightness higher than the average brightness of the display area, perceptible to the human eye. The Weber factor K in Weber's law satisfies: I0 represents the intensity of the original stimulus, and ΔI0 represents the stimulus increment that can elicit a difference in sensation. Based on this Weber factor, we can obtain, refer to... Figure 6 Assuming the average brightness of the display area is I1, when the leaky photon area can be distinguished from the display area, the brightness of the leaky photon area is I1 + ΔI1, where ΔI1 is the minimum brightness difference that can just cause differential sensory stimulation in the human visual system (HVS). Figure 7 This is a schematic diagram illustrating the relationship between the average brightness and the minimum brightness difference of a display area, provided in an embodiment of this disclosure. For example... Figure 7 As shown in the diagram, the horizontal axis x represents log(I1), and the vertical axis y represents... Depend on Figure 7 As can be seen from the diagram, the average brightness I1 and the difference between the lowest brightness ΔI1 in the display area within the constant region 001 are linearly related, which conforms to Weber's law. Therefore, based on Weber's law and the optical characterization of light leakage, it can be determined that the brightness of the light leakage sub-region must be greater than or equal to I1 + ΔI1.

[0192] In this embodiment of the disclosure, by displaying images of different brightness on the display panel and having multiple testers observe the images of different brightness, the minimum brightness difference observed by the multiple testers is obtained. Then, the formula for the minimum perceptible brightness difference J can be fitted based on these multiple minimum difference values. Optionally, during the display of images of different brightness, the brightness of the photoleakage area of ​​the display panel is greater than 0 and not greater than 20 nits.

[0193] The following explains the derivation process of the light leakage degree M of the display panel. The physical characterization of the light leakage degree M of the display panel can be defined as the ratio of the radiant energy of the leaking photon region to the radiant energy of the display region, that is, the ratio of the light leakage degree M of the display panel to the radiant energy of the leaking photon region. Q1 represents the radiant energy of the light leakage area, and Q0 represents the total radiant energy of the display area. Since the light energy Q satisfies Q = Φ × t, where Φ is the luminous flux and t is time, and the luminous flux Φ satisfies Φ = H × w, where H is the luminous intensity and w is the solid angle, and the luminous intensity H satisfies H = l × s, where l is the brightness and s is the area, it can be deduced that the light energy Q satisfies Q = l × s × w × t. Therefore, the light leakage degree M of the display panel satisfies: Where L is the brightness of the photoleak region, S is the area of ​​the photoleak region, Ω is the solid angle of the photoleak region, and T is the viewing time of the photoleak region. L0 is the brightness of the display area, S0 is the area of ​​the photoleak region, Ω0 is the solid angle of the display area, and T0 is the viewing time of the display area.

[0194] Since the time it takes for the human eye to view the entire display area and the photoleakage area is the same, i.e., T = T0, and the human eye's viewing angle remains constant, with the line of sight approximately perpendicular to the display panel surface, the solid angle of the photoleakage area and the solid angle of the display area can be approximately the same, i.e., Ω = Ω0. Therefore, it can be deduced that the light leakage degree M of the display panel satisfies: That is, M = A × X,

[0195] In summary, the embodiments of this disclosure provide a method for determining the degree of light leakage in a display panel. When a light leakage detection device detects light leakage sub-regions in multiple sub-regions, it can determine the degree of light leakage in the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of the degree of light leakage by inspection personnel, the solution provided in this application effectively improves the reliability and accuracy of determining the degree of light leakage in a display panel.

[0196] It should be noted that the order of steps in the method for determining the light leakage level of the display panel provided in this embodiment can be appropriately adjusted, and steps can also be deleted as needed. For example, steps 404 to 407, or steps 501 to 509, can be deleted as needed. Any variations that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application, and therefore will not be elaborated further.

[0197] Figure 8 This is a block diagram of a device for determining the light leakage level of a display panel according to an embodiment of this disclosure. This device can be applied to a light leakage detection equipment, and the display area of ​​the display panel includes multiple sub-regions. For example... Figure 8 As shown, the device may include:

[0198] The acquisition module 801 is used to acquire the brightness of each sub-region when the display area displays the target color of the image.

[0199] The determination module 802 is used to determine the degree of light leakage of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region if light leakage sub-regions are detected in multiple sub-regions.

[0200] In summary, the embodiments of this disclosure provide a device for determining the light leakage degree of a display panel. When the light leakage detection device detects the presence of light leakage sub-regions in multiple sub-regions, it can determine the light leakage degree of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of the light leakage degree by inspection personnel, the solution provided in this application effectively improves the reliability and accuracy of determining the light leakage degree of a display panel.

[0201] Optionally, the brightness of the light-leaking sub-region is greater than or equal to the brightness threshold, the degree of light leakage is positively correlated with the brightness of the light-leaking sub-region, and negatively correlated with the average brightness of multiple sub-regions.

[0202] Optionally, the brightness threshold L satisfies: L=L0+J.

[0203] Where L0 is the average brightness of multiple sub-regions, and J is the minimum visual difference in brightness.

[0204] Optionally, the minimum visual difference J of brightness satisfies:

[0205] Alternatively, the minimum visual difference J in brightness satisfies: J = K × L0.

[0206] Where n is an integer greater than or equal to 3, K0 is greater than or equal to 0.01 and less than or equal to 0.05, K1 is greater than or equal to 0.01 and less than or equal to 0.03, K2 is greater than or equal to 0 and less than or equal to 0.001, and K is greater than or equal to 0.01 and less than or equal to 0.03.

[0207] Optionally, n equals 3, K3 is greater than or equal to 0, and less than or equal to 0.001.

[0208] Optional, the target color is black.

[0209] refer to Figure 9 The determining module 802 includes:

[0210] The first determining submodule 8021 is used to determine a first ratio between the brightness of the light leakage sub-region and the average brightness of multiple sub-regions.

[0211] The second determining submodule 8022 is used to determine a second ratio between the area of ​​the light leakage sub-region and the area of ​​the display area.

[0212] The third determining submodule 8023 is used to determine the light leakage degree of the display panel based on the first ratio and the second ratio. The light leakage degree is positively correlated with the first ratio and also positively correlated with the second ratio.

[0213] Optionally, at least two light-leaking sub-regions exist within the multiple sub-regions; this third determining sub-module is used for:

[0214] Determine the product of the first ratio and the second ratio for each leaking photon region to obtain at least two products.

[0215] The degree of light leakage of the display panel is determined based on the sum of at least two products.

[0216] Optionally, module 801 is used for:

[0217] The first brightness of each sub-region when the display area displays the target color without applying force to the display panel, and the second brightness of each sub-region when the display area displays the target color with force applied to the display panel by the test fixture.

[0218] Determine module 802, used for:

[0219] A first light leakage degree of the display panel is determined based on the average first brightness of multiple sub-regions and the first brightness of the light leakage sub-region, and a second light leakage degree of the display panel is determined based on the average second brightness of multiple sub-regions and the second brightness of the light leakage sub-region.

[0220] Optionally, the determining module 802 is further configured to determine a first light leakage sensitivity caused by a unit deformation based on a first light leakage degree, a second light leakage degree, and the deformation of the display panel under force. The first light leakage sensitivity is negatively correlated with both the first light leakage degree and the deformation, and positively correlated with the second light leakage degree.

[0221] Optionally, the first light leakage sensitivity ΔM satisfies:

[0222] Where M1 represents the second degree of light leakage, M0 represents the first degree of light leakage, and f represents the deformation.

[0223] Optionally, module 801 is used for:

[0224] When a first force is applied to the display panel through a test fixture, a first target brightness of each sub-region is obtained when the display area displays a target color; and when a second force is applied to the display panel through a test fixture, a second target brightness of each sub-region is obtained when the display area displays a target color, wherein the directions of the first force and the second force are opposite.

[0225] Determine module 802, used for:

[0226] The first target light leakage degree of the display panel is determined based on the average value of the first target brightness of multiple sub-regions and the first target brightness of the light leakage sub-region, and the second target light leakage degree of the display panel is determined based on the average value of the second target brightness of multiple sub-regions and the second target brightness of the light leakage sub-region.

[0227] Based on the first light leakage degree, the first target light leakage degree, and the first deformation of the display panel under the first force, a first reference light leakage sensitivity caused by a unit of the first deformation is determined, and based on the first light leakage degree, the second target light leakage degree, and the second deformation of the display panel under the second force, a second reference light leakage sensitivity caused by a unit of the second deformation is determined.

[0228] The average of the first reference light leakage sensitivity and the second reference light leakage sensitivity is determined as the second light leakage sensitivity caused by a unit of first deformation and a unit of second deformation.

[0229] In summary, the embodiments of this disclosure provide a device for determining the light leakage degree of a display panel. When the light leakage detection device detects the presence of light leakage sub-regions in multiple sub-regions, it can determine the light leakage degree of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region. Compared to manual determination of the light leakage degree by inspection personnel, the solution provided in this application effectively improves the reliability and accuracy of determining the light leakage degree of a display panel.

[0230] Figure 10 This is a schematic diagram of a test fixture for a display panel provided in an embodiment of this disclosure. This test fixture can be used to apply force to the display panel. Figure 10 As shown, the test fixture may include a hollow frame 01, an adjustment component 02, and an external force application component 03.

[0231] The frame 01 is used to fix the display panel 1. The adjustment component 02 is movably connected to the frame 01 and fixedly connected to the external force application component 03. The adjustment component 02 is used to adjust the position of the external force application component 03 within the frame 01. The external force application component 03 is used to apply a force to the display panel 1.

[0232] In this embodiment of the disclosure, the active connection may refer to the fact that the relative position of the adjustment component 02 and the frame 01 is not fixed.

[0233] As an optional implementation, the active connection can be a detachable connection; as another optional implementation, the active connection refers to the fact that the adjustment component 02 and the frame 01 can be rotatably connected. For example, the adjustment component 02 can rotate relative to the frame 01, thereby adjusting the position of the external force application component 03 within the frame.

[0234] In summary, the embodiments of this disclosure provide a test fixture for a display panel, which can be used to apply force to the display panel. Because the adjustment component in this test fixture can adjust the position of the external force application component within the frame, it is applicable to display panels of different sizes, offering high flexibility in use.

[0235] refer to Figure 11 and Figure 12 The test fixture may further include a first fixing plate 04 and a second fixing plate 05. The first fixing plate 04 and the first side 011 of the frame are used to clamp the first side of the display panel 1, and the second fixing plate 05 and the second side 012 of the frame are used to clamp the second side of the display panel 1. This achieves the following: the first side of the display panel 1 is engaged between the first fixing plate 04 and the first side 011 of the frame, and the second side of the display panel 1 is engaged between the second fixing plate 05 and the second side 012 of the frame. The first side of the display panel 1 is parallel to the first side 011 of the frame 01, and the second side of the display panel 1 is parallel to the second side 012 of the frame 01.

[0236] The adjusting assembly 02 may include a first adjusting rod 021 and at least one fixing member 022, wherein the first adjusting rod 021 is provided with at least one first through hole. Figure 12 (Not shown). The third side 013 of the frame 01 is provided with multiple adjustment holes 014, and each fastener 022 is used to pass through a first through hole and connect to an adjustment hole 014. The first side 011 and the third side 013 intersect the second side 012 respectively. Optionally, both the frame and the display panel can be quadrilaterals, such as rectangles, and the first side 011 can be perpendicular to the second side 012 and parallel to the third side 013.

[0237] Optionally, a plurality of adjustment hole groups are provided on the third side 013 of the frame 01, each adjustment hole group including a plurality of adjustment holes 014 arranged along the extending direction of the third side 013, and the plurality of adjustment hole groups are arranged along the extending direction of the second side 012. For example, refer to Figure 11 The third side 013 is provided with two sets of adjustment holes arranged along the extension direction of the second side 012.

[0238] The first adjusting rod 021 may be provided with at least one group of first through holes. Each group of first through holes includes multiple first through holes arranged along the extension direction of the third side 013, and the multiple groups of first through holes are arranged along the extension direction of the second side 012. Accordingly, each fixing member 022 can pass through one of the first through holes. For example, the third side 013 may be provided with two groups of first through holes arranged along the extension direction of the third side 013, and each group of first through holes includes two first through holes. Accordingly, the adjusting assembly 02 may include four fixing members 022.

[0239] Optionally, the plurality of first through holes in each first through hole group can be connected along the extension direction of the second side 012, for example, referring to Figure 11 Each first through-hole group includes two first through-holes connected along the extension direction of the second side 012. This ensures that the position of the external force application component within the frame can be flexibly adjusted, thereby ensuring applicability to display panels of different sizes and providing high flexibility in use.

[0240] refer to Figure 11 and Figure 13 The test fixture may also include a first bolt 06 and a second bolt 07.

[0241] A second through hole is provided on both the first fixing plate 04 and the first side 011 of the frame 01. Figure 11 and Figure 13 (Not shown). The first bolt 06 is used to connect to the first side 011 of the frame 01 through the second through hole. Both the second fixing plate 05 and the second side 012 of the frame 01 have third through holes, and the second bolt 07 is used to connect to the second side 012 of the frame 01 through the third through holes. By rotating the first and second bolts, the distance between the frame and the fixing plate can be effectively adjusted, thereby making the test fixture suitable for display panels of different thicknesses, offering high flexibility in use.

[0242] Optionally, multiple second through holes may be provided on the first fixing plate 04 and the first side 011 of the frame 01. Figure 11 and Figure 13 (Not shown), the plurality of second through holes are arranged along the extending direction of the first side 011. Accordingly, the test fixture may include a plurality of first bolts 06, each of which is used to connect through the first side 011 of the corresponding first through hole frame.

[0243] Optionally, multiple third through holes may be provided on the second fixing plate 05 and the second side 012 of the frame 01. Figure 11 and Figure 13(Not shown), the plurality of third through holes are arranged along the extension direction of the second side 012. Accordingly, the test fixture may include a plurality of second bolts 07, each of which is used to connect to the second side of the frame through the corresponding third through hole.

[0244] refer to Figure 14 and Figure 15 The external force application component 03 may include a third fixing plate 031, a second adjusting rod 032, a clamping member 033, a contact member 034, and an adjusting member 035.

[0245] The third fixing plate 031 is fixedly connected to the first adjusting rod 021, and the third fixing plate 031 is provided with a fourth through hole. Figure 14 and Figure 15 (Not shown). One end a of the second adjusting rod 032 is used to pass through the fourth through hole, and the other end b of the second adjusting rod 032 is used to adjust the length of the portion of the second adjusting rod 032 extending from the fourth through hole. The extension direction of the second adjusting rod 032 is perpendicular to the display surface of the display panel 1. Optionally, the second adjusting rod 032 can be a micrometer, and the other end of the second adjusting rod 032 can be a knob.

[0246] The clamping member 033 is fixedly connected to the contact member 034, and the clamping member 033 is used to clamp the display panel 1. The clamping member 033 is used to clamp the top corner of the display panel 1, which is the angle where the third side and the fourth side of the display panel 1 intersect. Optionally, the display panel 1 can be rectangular, and the third side of the display panel 1 is parallel to the first side of the display panel 1 and perpendicular to the fourth side of the display panel 1.

[0247] The adjusting member 035 is connected to the first adjusting rod 021 and the clamping member 033 respectively. The adjusting member 035 is used to adjust the position of the clamping member 033 in a direction perpendicular to the display surface of the display panel 1, so that the contact member 034 fixedly connected to the clamping member 033 contacts one end a of the second adjusting rod 032, thereby applying a force to the display panel 1 clamped by the clamping member 033, so that the display panel 1 will deform under the action of the force.

[0248] refer to Figure 14 The adjusting member 035 may include a fourth fixing plate 0351 and a first screw 0352. The fourth fixing plate 0351 is fixedly connected to the first adjusting rod 021, and a sixth through hole (not shown in the figure) is provided on the fourth fixing plate 0351. One end of the first screw 0352 passes through the sixth through hole and is fixedly connected to the clamping member 033. The first screw 0352 is used to adjust the position of the clamping member 033 along a direction perpendicular to the display surface of the display panel 1.

[0249] The clamping member 033 may include two fifth fixing plates that are arranged opposite to each other and fixedly connected, a second screw 0331, and a movable plate 0332 located between the two fifth fixing plates.

[0250] The fifth fixing plate 0333 has a seventh through hole (not shown in the figure). One end of the second screw 0331 passes through the seventh through hole and is fixedly connected to the movable plate 0332. The second screw 0331 is used to adjust the distance between the movable plate 0332 and any of the fifth fixing plates, so as to clamp the display panel 1 between the fifth fixing plate 0333 and the movable plate 0332, or clamp the display panel 1 between the movable plate 0332 and another fifth fixing plate 0334.

[0251] In this embodiment, the process of applying a first force and a second force to the display panel 1 using a test fixture is described below. First, the first edge of the display panel 1 is engaged in the groove of the first edge 011 of the frame 01, and the second edge of the display panel 1 is engaged in the groove of the second edge 012 of the frame 01. Then, the top corner of the display panel 1 is placed between a movable plate 0332 and a fifth fixed plate 0333, and the distance between the movable plate 0332 and the fixed plate 0333 is reduced by rotating the second screw 0331 to ensure that the display panel 1 is clamped between the movable plate 0332 and the fifth fixed plate 0333. Next, the first screw 0352 is rotated to move the clamping member 033 and the contact member 034 along a first direction until the distance between one end a of the second adjusting rod 032 of the contact member 034 is greater than a first length. Then, the other end b of the second adjusting rod 032 is rotated to adjust the length of one end a of the second adjusting rod 032 extending from the fourth through hole from the target length to the first length. Then, the first screw 0352 is rotated to drive the clamping member 033 and the contact member 034 to move along the second direction until the contact member 034 contacts one end a of the second adjusting rod 032, thereby applying a first force to the display panel 1, and the display panel 1 generates a first deformation along the first direction under the action of the first force.

[0252] Specifically, when the length of one end a of the second adjusting rod 032 extending from the fourth through hole is the target length, if the contact member 034 contacts one end a of the second adjusting rod 032, the display panel held by the clamping member 033 will not deform. The first direction is the direction away from the other end b of the second adjusting rod 032, and the second direction is the direction closer to the other end b of the second adjusting rod 032. For example, if the first deformation is 1mm, this achieves a 1mm deformation of the display panel along the first direction under the action of the first force, that is, a downward pressure is applied to the display panel, and the display panel is pressed down by 1mm under the action of the pressure.

[0253] Next, the other end b of the second adjusting rod 032 is rotated to adjust the length of one end a of the second adjusting rod 032 extending from the fourth through hole from the first length to the second length. Then, the first screw 0352 is rotated, causing the first screw 0352 to move the clamping member 033 and the contact member 034 along the second direction until the contact member 034 contacts one end a of the second adjusting rod 032, thereby applying a second force to the display panel 1. Under the action of this second force, the display panel 1 undergoes a second deformation along the second direction. This second length is less than the first length and the target length. For example, if the second deformation is 1 mm, the display panel undergoes a 1 mm deformation along the second direction under the action of the second force, i.e., an upward pulling force is applied to the display panel, and the display panel moves upward by 1 mm under the action of this pulling force.

[0254] In this embodiment of the disclosure, all of the above-mentioned through holes can be threaded holes.

[0255] In summary, the embodiments of this disclosure provide a test fixture for a display panel, which can be used to apply force to the display panel. Because the adjustment component in this test fixture can adjust the position of the external force application component within the frame, it is applicable to display panels of different sizes, offering high flexibility in use.

[0256] This disclosure provides a system for determining the light leakage level of a display panel, which may include a light leakage detection device and Figures 10 to 15 Any of the test fixtures shown. The light leakage detection device may include... Figure 8 , Figure 9 or Figure 9 Device 80 for determining the light leakage level of the display panel shown.

[0257] like Figure 16 As shown, the system may also include a bracket 2, a brightness detection device 3, and a support platform 4. The bracket 2 is used to hold the test fixture 0, and the support platform 4 is used to support the brightness detection device 3. The detection surface of the brightness detection device 3 is parallel to the display surface of the display panel 1, thereby ensuring that the brightness detection device 3 can accurately detect the brightness of each sub-area.

[0258] Optionally, if the brightness detection device 3 is a surface-type photographic optical device, then the detection surface is the imaging surface of the surface-type photographic optical device. When acquiring the brightness of multiple sub-regions, the system needs to be placed in a darkroom.

[0259] This application provides a light leakage detection device, such as... Figure 17As shown, the light leakage detection device may include: a memory 901, a processor 902, and a computer program 9011 stored in the memory 901. When the processor 902 executes the computer program 9011, it implements the method for determining the degree of light leakage of the display panel provided in the above-described method embodiment. For example... Figure 1 , Figure 2 , Figure 4 or Figure 5 The method shown.

[0260] This application provides a computer-readable storage medium storing instructions that, when executed by a processor, implement the method for determining the light leakage level of a display panel provided in the above-described method embodiments. Figure 1 , Figure 2 , Figure 4 or Figure 5 The method shown.

[0261] This application provides a computer program product containing instructions. When the computer program product is run on a computer, it causes the computer to execute the method for determining the light leakage level of a display panel provided in the above-described method embodiments, for example... Figure 1 , Figure 2 , Figure 4 or Figure 5 The method shown.

[0262] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," "sixth," and "seventh" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the embodiments of this application, the term "at least one" means one or more. In the embodiments of this application, the term "multiple" means two or more. In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0263] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for determining the light leakage degree of a display panel, characterized in that, Applied to a light leakage detection device, the display panel's display area includes multiple sub-regions; the method includes: When the display area displays the target color, the brightness of each of the sub-regions is obtained; If a light leakage sub-region is detected in the plurality of sub-regions, the light leakage degree of the display panel is determined based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region; The step of determining the light leakage degree of the display panel based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region includes: Determine a first ratio between the brightness of the light-leaking sub-region and the average brightness of the plurality of sub-regions; Determine a second ratio between the area of ​​the photoleakage region and the area of ​​the display region; The light leakage degree of the display panel is determined based on the first ratio and the second ratio, wherein the light leakage degree is positively correlated with the first ratio and the second ratio.

2. The method according to claim 1, characterized in that, The brightness of the light-leaking sub-region is greater than or equal to the brightness threshold. The degree of light leakage is positively correlated with the brightness of the light-leaking sub-region and negatively correlated with the average brightness of the multiple sub-regions.

3. The method according to claim 2, characterized in that, The brightness threshold L satisfy: ; Among them, the L 0 represents the average brightness of the plurality of sub-regions. J This represents the minimum visual difference in brightness.

4. The method according to claim 3, characterized in that, The minimum visual difference in brightness J satisfy: ; Alternatively, the minimum visual difference in brightness J satisfy: ; Among them, the n The integer is greater than or equal to 3. K 0 is greater than or equal to 0.01 and less than or equal to 0.05, the K 1 is greater than or equal to 0.01 and less than or equal to 0.03, the K 2 is greater than or equal to 0 and less than or equal to 0.001; K It is greater than or equal to 0.01 and less than or equal to 0.

03.

5. The method according to claim 4, characterized in that, The n Equal to 3, the stated K 3 is greater than or equal to 0 and less than or equal to 0.

001.

6. The method according to claim 1, characterized in that, The target color is black.

7. The method according to claim 1, characterized in that, At least two of the light-leaking sub-regions exist among the plurality of sub-regions; determining the light-leaking degree of the display panel based on the first ratio and the second ratio includes: The product of the first ratio and the second ratio for each of the photon leakage regions is determined to obtain at least two products; The light leakage level of the display panel is determined based on the sum of the at least two products.

8. A method for determining the light leakage degree of a display panel, characterized in that, Applied to a light leakage detection device, the display panel's display area includes multiple sub-regions; the method includes: When the display area displays the target color, the brightness of each of the sub-regions is obtained; If a light leakage sub-region is detected in the plurality of sub-regions, the light leakage degree of the display panel is determined based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region; Wherein, when acquiring the image of the target color displayed in the display area, the brightness of each sub-region includes: The first brightness of each sub-region when the display area displays the target color without applying force to the display panel, and the second brightness of each sub-region when the display area displays the target color with force applied to the display panel by a test fixture; The step of determining the light leakage degree of the display panel based on the average brightness of the plurality of sub-regions and the brightness of the light leakage sub-region includes: A first light leakage degree of the display panel is determined based on the average value of the first brightness of the plurality of sub-regions and the first brightness of the light leakage sub-region; and a second light leakage degree of the display panel is determined based on the average value of the second brightness of the plurality of sub-regions and the second brightness of the light leakage sub-region. The method further includes: Based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under the applied force, a first light leakage sensitivity caused by a unit deformation is determined. The first light leakage sensitivity is negatively correlated with both the first light leakage degree and the deformation, and positively correlated with the second light leakage degree.

9. The method according to claim 8, characterized in that, First light leakage sensitivity satisfy: ; Among them, the M 1 represents the second degree of light leakage. M 0 represents the first light leakage level, the f Let be the deformation variable.

10. The method according to claim 8, characterized in that, The step of obtaining the second brightness of each sub-region when the display area displays a target color image under the condition that a force is applied to the display panel through a test fixture includes: When a first force is applied to the display panel through the test fixture, the first target brightness of each sub-region is obtained when the display area displays the target color; and when a second force is applied to the display panel through the test fixture, the second target brightness of each sub-region is obtained when the display area displays the target color, wherein the direction of the first force and the direction of the second force are opposite. Determining the second light leakage degree of the display panel based on the average second brightness of the plurality of sub-regions and the second brightness of the light leakage sub-regions includes: Based on the average value of the first target brightness of the plurality of sub-regions and the first target brightness of the light leakage sub-region, the first target light leakage degree of the display panel is determined, and based on the average value of the second target brightness of the plurality of sub-regions and the second target brightness of the light leakage sub-region, the second target light leakage degree of the display panel is determined; The determination of the first light leakage sensitivity per unit deformation based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under the applied force includes: Based on the first light leakage degree, the first target light leakage degree, and the first deformation of the display panel under the first force, a first reference light leakage sensitivity caused by a unit of the first deformation is determined, and based on the first light leakage degree, the second target light leakage degree, and the second deformation of the display panel under the second force, a second reference light leakage sensitivity caused by a unit of the second deformation is determined. The method further includes: The average value of the first reference light leakage sensitivity and the second reference light leakage sensitivity is determined as the second light leakage sensitivity caused by a unit of first deformation and a unit of second deformation.

11. A device for determining the light leakage degree of a display panel, characterized in that, An apparatus for detecting light leakage, wherein the display panel comprises multiple sub-regions; the device includes: The acquisition module is used to acquire the brightness of each sub-region when the display area displays an image of the target color; The determination module is used to determine the degree of light leakage of the display panel based on the average brightness of the multiple sub-regions and the brightness of the light leakage sub-region if a light leakage sub-region is detected in the multiple sub-regions. The determining module includes: The first determining submodule is used to determine a first ratio between the brightness of the light leakage sub-region and the average brightness of the plurality of sub-regions; The second determining submodule is used to determine a second ratio between the area of ​​the light leakage sub-region and the area of ​​the display area; The third determining submodule is used to determine the light leakage degree of the display panel based on the first ratio and the second ratio, wherein the light leakage degree is positively correlated with the first ratio and positively correlated with the second ratio; or, The acquisition module is further configured to: acquire the first brightness of each sub-region when the display area displays the target color without applying force to the display panel, and acquire the second brightness of each sub-region when the display area displays the target color with force applied to the display panel by a test fixture; The determining module is further configured to: determine a first light leakage degree of the display panel based on the average value of the first brightness of the plurality of sub-regions and the first brightness of the light leakage sub-region, and determine a second light leakage degree of the display panel based on the average value of the second brightness of the plurality of sub-regions and the second brightness of the light leakage sub-region; Based on the first light leakage degree, the second light leakage degree, and the deformation of the display panel under the applied force, a first light leakage sensitivity caused by a unit deformation is determined. The first light leakage sensitivity is negatively correlated with both the first light leakage degree and the deformation, and positively correlated with the second light leakage degree.

12. A test fixture for a display panel, characterized in that, The test fixture includes: a hollow frame, an adjustment component, and an external force application component; The frame is used to fix the display panel; The adjustment component is movably connected to the frame and fixedly connected to the external force application component. The adjustment component is used to adjust the position of the external force application component within the frame. The external force application component is used to apply a force to the display panel; The external force application component includes: a third fixing plate, a second adjusting rod, a clamping member, a contact member, and an adjusting member; The third fixing plate is fixedly connected to the first adjusting rod of the adjusting assembly, and the third fixing plate is provided with a fourth through hole. One end of the second adjusting rod is used to pass through the fourth through hole, and the other end of the second adjusting rod is used to adjust the length of the part of the second adjusting rod that extends out of the fourth through hole. The clamping member is fixedly connected to the contact member, and the clamping member is used to clamp the display panel; The adjusting member is connected to the first adjusting rod and the clamping member respectively. The adjusting member is used to adjust the position of the clamping member in a direction perpendicular to the display surface of the display panel, so that the contact member fixedly connected to the clamping member contacts one end of the second adjusting rod.

13. The test fixture according to claim 12, characterized in that, The test fixture also includes a first fixing plate and a second fixing plate; The first fixing plate and the first side of the frame are used to clamp the first side of the display panel; The second fixing plate and the second side of the frame are used to clamp the second side of the display panel; The adjustment assembly includes a first adjustment rod and at least one fixing member. The first adjustment rod is provided with at least one first through hole, and the third side of the frame is provided with a plurality of adjustment holes. Each fixing member is used to pass through one of the first through holes and connect to one of the adjustment holes. The first side and the third side intersect the second side, respectively.

14. The test fixture according to claim 13, characterized in that, The test fixture also includes a first bolt and a second bolt; A second through hole is provided on both the first fixing plate and the first side of the frame, and the first bolt is used to pass through the second through hole and connect to the first side of the frame; Both the second fixing plate and the second side of the frame are provided with a third through hole, and the second bolt is used to pass through the third through hole and connect to the second side of the frame.

15. The test fixture according to claim 12, characterized in that, The adjusting component includes: a fourth fixing plate and a first screw; The fourth fixing plate is fixedly connected to the first adjusting rod. The fourth fixing plate is provided with a sixth through hole. One end of the first screw passes through the sixth through hole and is fixedly connected to the clamping member. The first screw is used to adjust the position of the clamping member along a direction perpendicular to the display surface of the display panel.

16. The test fixture according to claim 15, characterized in that, The clamping component includes two fifth fixing plates that are arranged opposite to each other and fixedly connected, a second screw, and a movable plate located between the two fifth fixing plates; One of the fifth fixed plates is provided with a seventh through hole, and one end of the second screw passes through the seventh through hole and is fixedly connected to the movable plate. The second screw is used to adjust the distance between the movable plate and any of the fifth fixed plates.

17. A system for determining the light leakage degree of a display panel, characterized in that, The system includes: a device for determining the light leakage level of a display panel as described in claim 11, and a test fixture as described in any one of claims 12 to 16.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that are loaded and executed by a processor to implement the method for determining the light leakage level of a display panel as described in any one of claims 1 to 10.

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