CN220323666U - Brightness testing device - Google Patents

Abstract

The application provides a light testing device, the light testing device is used for providing light to display panel. The light testing device comprises a workbench, a light source assembly and a light guide tube assembly, wherein the display panel, the light source assembly and the light guide tube assembly are arranged on the workbench, the light source assembly is arranged at one end of the light guide tube assembly, the display panel is arranged at one end of the light guide tube assembly opposite to the light source assembly, the light source assembly provides light to the light guide tube assembly, and the light guide tube assembly guides the light emitted by the light source assembly to a target testing area of the display panel so as to carry out light testing on the display panel. Therefore, the light emitted by the light source assembly is guided to the target test area of the display panel through the light guide tube assembly, so that the light emitted by the light source assembly is prevented from irradiating the rest test areas except the target test area of the display panel, errors of the brightness test are reduced, and the result of the brightness test is more accurate.

Description

Brightness testing device

Technical Field

The application relates to the technical field of display, in particular to a brightness testing device.

Background

Liquid crystal display devices such as liquid crystal displays (Liquid Crystal Display, LCD) are widely used in the display field because of their thin body, power saving, no radiation, soft picture, etc.

The lcd device generally includes a backlight module for providing backlight and a display panel for displaying images, and due to the light leakage current of the semiconductor devices in the display panel under the illumination of the backlight, the display panel may have problems such as screen flashing and uneven display (Mura). Therefore, in the process of manufacturing the display panel, the brightness test is usually performed on the display panel. In the light test, the display panel is generally divided into a plurality of test areas, and the test device sequentially provides light to the plurality of test areas. However, when the conventional test device supplies light to the target test area of the display panel, the light irradiates the test area near the target test area in the display panel, resulting in a larger error of the test result.

Therefore, how to solve the problem that the light provided by the testing device to the display panel irradiates other testing areas outside the target testing area in the light test is a urgent need for those skilled in the art.

Disclosure of Invention

In view of the foregoing deficiencies of the prior art, an object of the present application is to provide a light testing device, which aims to solve the problem that light provided to a display panel by the testing device is irradiated outside a target testing area in a light test.

In order to solve the technical problem, the embodiment of the application provides a light testing device for providing light to a display panel, the light testing device comprises a workbench, a light source assembly and a light guide tube assembly, the display panel the light source assembly and the light guide tube assembly set up in on the workbench, the light source assembly set up in the one end of light guide tube assembly, the display panel set up in the light guide tube assembly is facing away from the one end of light source assembly. The light source assembly provides light to the light guide tube assembly, and the light guide tube assembly guides the light emitted by the light source assembly to a target test area of the display panel so as to carry out brightness test on the display panel.

In summary, according to the light testing device provided by the embodiment of the application, the light emitted by the light source assembly is guided to the target testing area of the display panel through the light guide tube assembly, so that the light emitted by the light source assembly is prevented from being irradiated to the rest testing areas of the display panel except the target testing area, the error of the light testing is reduced, and the result of the light testing is more accurate.

In an exemplary embodiment, the light guide tube assembly includes a plurality of light guide tubes and a plurality of connectors, the plurality of light guide tubes are arranged side by side and sequentially at intervals, the openings of the plurality of light guide tubes are aligned with each other, and the connectors are connected between bottoms of two adjacent light guide tubes.

In an exemplary embodiment, the light testing device further includes at least one light control element, each of the light control elements is disposed between a pair of adjacent light guide cylinders and located on the connecting member, and the light control element controls an area of the light emitted from the light guide cylinder assembly.

In an exemplary embodiment, the light control element includes a light shielding region and a light transmitting region, the light shielding region is surrounded on a peripheral side of the light transmitting region, the light shielding region blocks light transmitted in the light guide tube from passing through, and the light transmitting region allows light transmitted in the light guide tube to pass through.

In an exemplary embodiment, the brightness testing device further includes at least one filter element, each filter element being disposed between another pair of adjacent light guide cylinders and on the connector, the filter element adjusting brightness of the light.

In an exemplary embodiment, the light brightness testing device further includes a plurality of limiting structures, the limiting structures are disposed on outer walls of two adjacent light guiding cylinders, the two limiting structures are disposed opposite to each other, the plurality of limiting structures limit the light control element between the two adjacent light guiding cylinders and limit the light filtering element between the two adjacent light guiding cylinders.

In an exemplary embodiment, each of the limiting structures includes a first limiting member, a second limiting member and a third limiting member, where the first limiting member and the second limiting member of one limiting structure are respectively connected to outer walls of one ends of two adjacent light guide cylinders facing each other, and the third limiting member is connected between the first limiting member and the second limiting member.

In an exemplary embodiment, the light source assembly includes a base, a support column and a light shield, the base is disposed on the workbench, opposite ends of the support column are respectively connected to the base and the light shield, and the light shield is located at one end of the light guide tube assembly opposite to the display panel. The light source assembly comprises a light guide tube assembly, a light shield, a light source, a light guide tube assembly and a light guide tube assembly, wherein the light shield is provided with an opening at one end facing the light guide tube assembly, the light source is positioned in the light shield and is exposed out of the opening, and the light source emits light and transmits the light to the light guide tube assembly.

In an exemplary embodiment, the light testing device further comprises at least one bracket disposed on the table, the light guide tube assembly being disposed on the bracket.

In an exemplary embodiment, the support includes a bottom plate, a support body, a first pillar and a second pillar, the bottom plate set up in on the workstation, the support body connect in the bottom plate is facing away from one side of workstation, the one end of first pillar, the one end of second pillar with the support body is facing away from the one end of bottom plate is connected, the first pillar is facing away from the one end of support body with the second pillar is facing away from the one end of support body looks interval setting, the light guide section of thick bamboo subassembly is placed in between the first pillar and the second pillar.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a first embodiment of a light testing device disclosed in the present application;

fig. 2 is a schematic diagram of a second perspective structure of the light testing device according to the embodiment of the present application.

FIG. 3 is a schematic elevational view of the bracket shown in FIG. 1;

FIG. 4 is an enlarged schematic view of structure IV in the light testing apparatus shown in FIG. 1;

FIG. 5 is a schematic side view of a portion of the light guide assembly of the light testing device of FIG. 1;

FIG. 6 is a schematic front view of the light control device shown in FIG. 5;

FIG. 7 is a schematic front view of the filter element shown in FIG. 5;

FIG. 8 is a schematic top view of a light guide assembly of the light testing device of FIG. 1;

FIG. 9 is an enlarged schematic view of structure VIIII of the light guide assembly of FIG. 8;

fig. 10 is a cross-sectional view of the light guide tube assembly of fig. 9 along the X-X direction.

Reference numerals illustrate:

10-a workbench; 20-a light source assembly; 21-a base; 22-supporting columns; 23-a light shield; 23 a-opening holes; 25-a light source; 30-a light guide barrel assembly; 31-a light guide tube; 32-a connector; 50-a bracket; 51-a bottom plate; 52-a support; 53-a first leg; 54-a second leg; 60-a light control element; 61-a light shielding region; 62-a light-transmitting region; 70-a filter element; 90-limiting structure; 91-a first stop; 92-a second limiting piece; 93-a third limiting piece; 100-a brightness testing device; 200-a display panel; 210-an array substrate; 220-color film substrate; 240-flexible circuit board; 250-circuit board.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus, directional terms are used for better, more clear description and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," "may be" or "including" as used in this application mean the presence of the corresponding function, operation, element, etc. disclosed, but not limited to other one or more additional functions, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. It will also be understood that the meaning of "at least one" as described herein is one and more, such as one, two or three, etc., and the meaning of "a plurality" is at least two, such as two or three, etc., unless specifically defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of a first perspective structure of a light testing device according to an embodiment of the present application, and fig. 2 is a schematic diagram of a second perspective structure of the light testing device according to an embodiment of the present application. The brightness testing device 100 provided in the embodiment of the present application is configured to provide light to the display panel 200 to perform a brightness test on the display panel 200, where the display panel 200 includes a plurality of testing areas. The light testing device 100 includes a workbench 10, a light source assembly 20 and a light guide tube assembly 30, the display panel 200, the light source assembly 20 and the light guide tube assembly 30 are located on the workbench 10, the light source assembly 20 is disposed at one end of the light guide tube assembly 30, and the display panel 200 is disposed at one end of the light guide tube assembly 30 opposite to the light source assembly 20, that is, the light guide tube assembly 30 is located between the display panel 200 and the light source assembly 20. The light source assembly 20 provides light to the light guide tube assembly 30, and the light guide tube assembly 30 can transmit light for guiding the light emitted from the light source assembly 20 to the target test area of the display panel 200.

In this embodiment, the target test area may be any one or more of a plurality of the test areas, and the test area where the light test is expected to be performed is the target test area. The light testing device 100 can perform a light test only on one or more of the plurality of test areas of the display panel 200 at a time.

It can be appreciated that, the light emitted by the light source assembly 20 is guided to the target test area of the display panel 200 by the light guide tube assembly 30, so that the light emitted by the light source assembly 20 is prevented from irradiating the rest test areas of the display panel 200 except the target test area, the test error is reduced, the target test area is aligned with the light source assembly 20 more accurately, the position of the light irradiated to the target test area is more accurate, and the result of the brightness test is more accurate. Moreover, the light emitted from the light source assembly 20 is strong light, and the light guide tube assembly 30 makes the light emitted from the light source assembly 20 directionally propagate to the target test area of the display panel 200, so as to prevent the light from irradiating the experimenter during the brightness test, and protect eyes of the experimenter. Meanwhile, the brightness testing device 100 of the present application has the advantages of simple design, convenient operation, strong practicability and the like.

It will be further appreciated that, during the light test, the display panel 200 may be held by a moving device (not shown) at all times, and after the light test is completed on the target test area, the moving device drives the display panel 200 to move at a predetermined speed, so that the light guide assembly 30 is aligned with the next test area to perform the light test on the next test area.

In this embodiment, referring to fig. 1 and 2, the display panel 200 includes an array substrate 210 and a color film substrate 220 that are stacked, the array substrate 210 is disposed towards the light guide tube assembly 30, and the color film substrate 220 is disposed on a side of the array substrate 210 opposite to the light guide tube assembly 30. The display panel 200 further includes a liquid crystal layer (not shown) disposed between the array substrate 210 and the color film substrate 220. The array substrate 210 drives liquid crystal molecules in the liquid crystal layer to deflect according to the image signal so as to adjust the transmittance of the liquid crystal layer; the color film substrate 220 is used for realizing color display. The array substrate 210 is provided with a plurality of semiconductor elements therein, so as to test the influence of the leakage current of the semiconductor elements in the array substrate 210 on the display panel 200 under the irradiation of light, and therefore, the array substrate 210 is disposed towards the light guide tube assembly 30.

In an exemplary embodiment, the display panel 200 further includes at least one flexible circuit board 240 and a circuit board 250, one end of the flexible circuit board 240 is connected to the array substrate 210 to make an electrical connection, the other end of the flexible circuit board 240 is connected to the circuit board 250 to make an electrical connection, the circuit board 250 is used to provide the image signal to the array substrate 210 through the flexible circuit board 240, and the flexible circuit board 240 is used to transmit the image signal to the array substrate 210.

In an exemplary embodiment, the flexible circuit board 240 may be a Chip On Film (COF), and the circuit board 250 may be a printed circuit board assembly (Printed Circuit Board Assembly, PCBA).

In an exemplary embodiment, the length of the light guide tube assembly 30 may be 100cm to 150cm, for example, 100cm, 103cm, 110cm, 125cm, 137cm, 150cm, or other values, which are not particularly limited herein. Wherein, the length of the light guiding barrel assembly 30 is as follows: the distance between the end of the light guide tube assembly 30 facing the display panel 200 and the end of the light guide tube assembly 30 facing the light source assembly 20.

In this embodiment, referring to fig. 1, the light source assembly 20 includes a base 21, a support column 22 and a light shield 23, the base 21 is disposed on the workbench 10 and is detachably and fixedly connected with the workbench 10, the support column 22 is disposed on a side of the base 21 opposite to the workbench 10, one end of the support column 22 is connected with the base 21, the light shield 23 is connected to an end of the support column 22 opposite to the base 21 and is located on an end of the light guide tube assembly 30 opposite to the display panel 200, and the light shield 23 and the light guide tube assembly 30 are alternately disposed. That is, the base 21 is detachably and fixedly connected with the workbench 10, one end of the support column 22 is fixedly connected with the base 21, the other end of the support column 22 opposite to the support column is fixedly connected with the light shielding cover 23, and the light shielding cover 23 is located at a position of the light guiding barrel assembly 30 opposite to the display panel 200 and is arranged at a distance from the light guiding barrel assembly 30.

In an exemplary embodiment, the overall shape of the base 21 may be a plate-like structure, such as a circular plate, an elliptical plate, or other polygonal plates, which is not particularly limited in this application, and the base 21 shown in fig. 1 is a circular plate. The overall shape of the support column 22 may be a columnar structure, such as a cylinder, a prism, etc., which is not particularly limited in this application, wherein the support column 22 shown in fig. 1 is a cylinder.

In an exemplary embodiment, referring to fig. 2, an opening 23a is formed at an end of the light shielding cover 23 facing the light guiding barrel assembly 30, that is, an end of the light shielding cover 23 facing the light guiding barrel assembly 30 is not closed to form an open end of the opening 23 a. The light source assembly 20 further includes a light source 25, wherein the light source 25 is disposed in the light shield 23 and is exposed from the opening 23a, i.e. the space between the light source 25 and the light guide tube assembly 30 is not blocked. The light source 25 is configured to emit the light and transmit the light to the light guide tube assembly 30. The light shield 23 is used for supporting the light source 25 and shielding the light emitted by the light source 25, so that the light is emitted only from the position of the opening 23a of the light shield 23. The inner wall of the light shielding cover 23 (i.e. the wall of the opening 23 a) may be provided with a reflective material to enhance the brightness of the light.

In an exemplary embodiment, an end of the light shielding cover 23 opposite to the light guiding barrel assembly 30 is closed, and the overall shape of the light shielding cover 23 may be a thin shell structure, for example, a hollow round table, a hollow cylinder, etc., which is not particularly limited in this application. The light shield 23 shown in fig. 2 is a hollow circular truncated cone.

In this embodiment, referring to fig. 1 and 2, the light testing device 100 further includes at least one bracket 50, the bracket 50 is disposed on the workbench 10 and detachably and fixedly connected to the workbench 10, the light guide tube assembly 30 is disposed on the bracket 50, and the bracket 50 is used for supporting the light guide tube assembly 30 and adjusting the position of the light guide tube assembly 30.

In an exemplary embodiment, referring to fig. 3, fig. 3 is a schematic front view of the stand shown in fig. 1, the stand 50 includes a base plate 51, a supporting body 52, a first supporting column 53 and a second supporting column 54, the base plate 51 is disposed on the table 10 and is detachably and fixedly connected to the table 10, the supporting body 52 is disposed on a side of the base plate 51 opposite to the table 10, and one end of the supporting body 52 is connected to the base plate 51. The first support 53 and the second support 54 are disposed at an end of the support 52 opposite to the bottom plate 51, and one end of the first support 53 and one end of the second support 54 are connected to an end of the support 52 opposite to the bottom plate 51, that is, one end of the support 52 is connected to the bottom plate 51, and the other end of the support 52 opposite to the first support 53 is connected to the second support 54. The end of the first pillar 53 opposite to the supporting body 52 and the end of the second pillar 54 opposite to the supporting body 52 are arranged at intervals, that is, the first pillar 53 and the second pillar 54 are arranged at an included angle, and the light guide tube assembly 30 is disposed between the first pillar 53 and the second pillar 54.

In an exemplary embodiment, the support body 52, the first support leg 53 and the second support leg 54 have an overall shape of a "Y" shape. The light guide tube assembly 30 is disposed between the first leg 53 and the second leg 54.

In an exemplary embodiment, the overall shape of the bottom plate 51 may be a plate-like structure, for example, a circular plate, an elliptical plate, or other polygonal plate, which is not particularly limited in this application, and the bottom plate 51 shown in fig. 3 is a rectangular plate. The overall shapes of the supporting body 52, the first supporting post 53 and the second supporting post 54 may be cylindrical structures, such as cylinders, prisms, etc., which are not particularly limited in this application, and the supporting body 52, the first supporting post 53 and the second supporting post 54 shown in fig. 3 are all cylinders.

In the embodiment of the present application, referring to fig. 4 and 5, fig. 4 is an enlarged schematic view of a structure IV in the light testing device shown in fig. 1, and fig. 5 is a schematic side view of a portion of a light guiding tube assembly of the light testing device shown in fig. 1. The light guiding barrel assembly 30 includes a plurality of light guiding barrels 31 and a plurality of connecting members 32, the light guiding barrels 31 are arranged side by side and at intervals in sequence, the openings of the light guiding barrels 31 are aligned with each other, and the openings of the light guiding barrels 31 are connected in a straight line. Each connecting piece 32 connects two adjacent light guiding barrels 31, that is, two adjacent light guiding barrels 31 are connected through the connecting piece 32, specifically, the connecting piece 32 is connected between the bottoms of two adjacent light guiding barrels 31, wherein the bottom of the light guiding barrel 31 is a part of the side wall of the light guiding barrel 31 closest to the workbench 10. That is, the connecting member 32 is connected between the partial side walls of the adjacent two light guide cylinders 31 facing the table 10.

It is understood that the light guide 31 may be a hollow cylindrical structure, for example, a hollow cylinder or a hollow prism, and the opposite ends of the light guide 31 have openings, respectively, and the openings of the light guide 31 are aligned with the light sources 25, so that the light emitted by the light sources 25 can be sequentially transmitted through the light guide 31 to the target test area of the display panel 200.

In an exemplary embodiment, the opening of the light guide tube 31 is matched with the aperture of the opening 23a of the light shield 23, specifically, the shape of the opening of the light guide tube 31 is the same as the shape of the aperture of the opening 23a of the light shield 23, and the size of the opening of the light guide tube 31 is the same as the size of the aperture of the opening 23a of the light shield 23.

In an exemplary embodiment, the plurality of light guide cylinders 31 and the plurality of connecting pieces 32 may be formed by forming a plurality of hollow portions on the light guide cylinder assembly 30, and the portions of the hollow portions that do not penetrate through the light guide cylinder assembly 30 are the connecting pieces 32.

In an exemplary embodiment, the gap between two adjacent light guide cylinders 31 may be 0.5mm to 1.5mm, for example, 0.5mm, 0.63mm, 0.88mm, 1mm, 1.2mm, 1.5mm, or other values, which are not particularly limited in this application. The gap between two adjacent light guide cylinders 31 is the width of the connecting piece 32. The diameter of the light guide tube 31 may be 4cm to 8cm, for example, 4cm, 4.5cm, 5cm, 5.8cm, 6cm, 6.3cm, 7cm, 7.4cm, 8cm, or other values, which are not particularly limited in this application. The height of the connector 32 may be the wall thickness of the light guide 31.

In the embodiment of the present application, referring to fig. 4 and 5, the brightness testing device 100 further includes at least one light control element 60 and at least one light filtering element 70. The light control element 60 may be disposed between a pair of adjacent light guide cylinders 31 and located on the connecting member 32, and the light filtering element 70 may be disposed between another pair of adjacent light guide cylinders 31 and located on the connecting member 32. The light control element 60 is configured to control an outgoing area of the light beam from the light guide tube assembly 30, and the filter element 70 has a certain transmittance and is configured to adjust brightness of the light beam. Wherein, two adjacent light guide cylinders 31 may be referred to as a pair of adjacent light guide cylinders 31.

It can be understood that referring to fig. 6, fig. 6 is a schematic front view of the light control device shown in fig. 5. The light control element 60 includes a light shielding region 61 and a light transmitting region 62, the light shielding region 61 is surrounded on the periphery of the light transmitting region 62, the light shielding region 61 is used for shielding light, that is, the light shielding region 61 blocks light transmitted in the light guiding tube 31 from passing through, the light transmitting region 62 is used for transmitting light, and the light transmitting region 62 allows light transmitted in the light guiding tube 30 to pass through. The number of the light control elements 60 is plural, the areas of the light transmission areas 62 of at least part of the light control elements 60 of the plurality of light control elements 60 are different, and the light emission area of the light from the light guide tube assembly 30 is adjusted by placing different light control elements 60 between two adjacent light guide tubes 31. The number of the light filtering elements 70 is a plurality, at least a part of the number of the light filtering elements 70 of the plurality of light filtering elements 70 has different light transmittance, and one light filtering element 70 or a plurality of light filtering elements 70 may be disposed on the light guiding barrel assembly 30, where the plurality of light filtering elements 70 may be respectively placed between a plurality of pairs of adjacent light guiding barrels 31. The area and brightness of the light emitted from the light guide tube assembly 30 can be adjusted in real time through the above technical scheme.

In an exemplary embodiment, the thickness of the gap between two adjacent light guide cylinders 31 may be matched with the thickness of the light control element 60 placed therein, and the thickness of the gap between two adjacent light guide cylinders 31 may be matched with the thickness of the light filtering element 70 placed therein to avoid light leakage at the gap. The gaps between the adjacent two light guide cylinders 31, which are not placed in the light control element 60 or the light filtering element 70, may be placed with transparent plates that are transparent in the thickness direction, the peripheral sides of the transparent plates are opaque, and the thickness of the transparent plates is matched with the thickness of the gaps between the adjacent two light guide cylinders 31, so as to avoid light leakage at the gaps.

In an exemplary embodiment, the light control element 60 includes a first light transmissive element and a light shielding film disposed on a portion of a surface of the first light transmissive element, such that the light control element 60 has the light shielding region 61 and the light transmissive region 62, an area of the light shielding film covering the first light transmissive element may be adjusted, and the light shielding film may be black paint. The filter element 70 includes a second light-transmitting element and a semipermeable membrane, and the semipermeable membrane is disposed on the surface of the second light-transmitting element, so that the filter element 70 has a certain transmittance, and the transmittance of the semipermeable membrane can be adjusted. The material of the first light-transmitting element and the material of the second light-transmitting element can be transparent resin or transparent glass.

In an exemplary embodiment, referring to fig. 6 and 7, fig. 7 is a schematic front view of the optical filter element shown in fig. 5, the overall shapes of the light control element 60 and the optical filter element 70 may be plate-shaped structures, such as a circular plate, an elliptical plate or other polygonal plates, which are not particularly limited herein, wherein the light control element 60 shown in fig. 6 and the optical filter element 70 shown in fig. 7 are rectangular plates. The overall shape of the light-transmitting region 62 may be circular, elliptical or polygonal, which is not particularly limited in this application, and the light-transmitting region 62 shown in fig. 6 is circular.

In an exemplary embodiment, after the light control element 60 is disposed between two adjacent light guide cylinders 31 (i.e., a pair of adjacent light guide cylinders 31), the height of the light control element 60 is higher than the height of the light guide cylinders 31, i.e., the side of the light control element 60 facing away from the connecting piece 32 extends out of the light guide cylinders 31, so as to facilitate the placement and removal of the light control element 60. After the filter element 70 is disposed between two adjacent light guide cylinders 31, the height of the filter element 70 is higher than the height of the light guide cylinders 31, i.e. one side of the filter element 70 facing away from the connecting piece 32 extends out of the light guide cylinders 31, so as to facilitate the insertion and removal of the filter element 70.

In this embodiment, referring to fig. 8, fig. 8 is a schematic top view of a light guide tube assembly of the light testing device shown in fig. 1, referring to fig. 9, and fig. 9 is an enlarged schematic view of a structure VIIII of the light guide tube assembly shown in fig. 8. As shown in fig. 4, 5, 8 and 9, the light testing device 100 further includes a plurality of limiting structures 90, each limiting structure 90 is disposed on the outer wall of any two adjacent light guiding cylinders 31, the positions of two limiting structures 90 correspond to the position of one connecting piece 32, and the two limiting structures 90 are disposed opposite to each other. That is, the front projection of one connecting piece 32 on the workbench 10 is located between the front projections of two opposite limiting structures 90 on the workbench 10, and the front projections of two opposite limiting structures 90 on the workbench 10 are spaced. The limiting structures 90 are used for limiting the light control element 60 between two adjacent light guide cylinders 31 and limiting the light filtering element 70 between two adjacent light guide cylinders 31, so as to prevent the light control element 60 and the light filtering element 70 from loosening or tilting, and further prevent the light control element 60 and the light filtering element 70 from sliding off from the light guide cylinder assembly 30.

In an exemplary embodiment, referring to fig. 9 and 10, fig. 10 is a cross-sectional view of the light guide tube assembly shown in fig. 9 along the X-X direction. The limiting structure 90 includes a first limiting member 91, a second limiting member 92, and a third limiting member 93 connected between the first limiting member 91 and the second limiting member 92. The first limiting member 91 is connected to an outer wall of one end of one light guiding barrel 31, and the second limiting member 92 is connected to an outer wall of an end of an adjacent other light guiding barrel 31, that is, the first limiting member 91 and the second limiting member 92 of one limiting structure 90 are respectively connected to outer walls of ends of two adjacent light guiding barrels 31 facing each other. The third limiting member 93 is connected between an edge of the first limiting member 91 facing away from the light guiding tube 31 and an edge of the second limiting member 92 facing away from the light guiding tube 31.

It can be understood that the bottom of the light control element 60 in the length direction is supported by the connecting piece 32, two sides of the light control element 60 in the thickness direction are limited by two adjacent light guide cylinders 31, and two sides of the light control element 60 in the width direction are limited by two oppositely arranged limiting structures 90. The bottom of the filter element 70 in the length direction is supported by the connector 32, two sides of the filter element 70 in the thickness direction are limited by two adjacent light guide cylinders 31, and two sides of the filter element 70 in the width direction are limited by two limiting structures 90 which are oppositely arranged.

In an exemplary embodiment, the limiting structure 90 may have a "concave" shape in a top view, and the openings of the two opposing limiting structures 90 face each other. Both sides of the light control element 60 in the width direction are respectively located between the first limiting member 91 and the second limiting member 92 of the two opposite limiting structures 90. Both sides of the filter element 70 in the width direction are respectively located between the first limiting member 91 and the second limiting member 92 of the two opposite limiting structures 90.

In an exemplary embodiment, the first stoppers 91 of the two opposite limiting structures 90 may be disposed in parallel, the second stoppers 92 of the two opposite limiting structures 90 may be disposed in parallel, and the third stoppers 93 of the two opposite limiting structures 90 may be disposed in parallel.

As shown in fig. 1 and 2, in an exemplary embodiment, before the brightness test device 100 is used to perform the brightness test on the display panel 200, the positions of the bracket 50 and the light source assembly 20 are adjusted according to the size of the display panel 200, and the light guide tube assembly 30 is placed on the bracket 50 such that opposite ends of the light guide tube assembly 30 are aligned with the light source 25 of the light source assembly 20 and the target test area of the display panel 200, respectively. The light source 25 of the light source assembly 20 is energized, the light source 25 emits the light, the light control element 60 is disposed between a pair of adjacent light guide cylinders 31 to adjust the outgoing area of the light from the light guide cylinder assembly 30, and the filter element 70 is disposed between at least a pair of adjacent light guide cylinders 31 to adjust the brightness of the light. When the brightness test device 100 is used to perform the brightness test on the display panel 200, the light emitted by the light source assembly 20 irradiates the target detection area of the display panel 200, the circuit board 250 provides image signals to the array substrate 210, the color film substrate 220 displays a picture, and an experimenter observes whether the picture has a splash screen, a non-uniform display, and the like. After the detection of the target detection area is completed, the moving device drives the display panel 200 to move at a predetermined speed, so that the light guide tube assembly 30 is aligned with the next test area, and the light test is performed on the next test area. Through the above-mentioned brightness test performed on the real panel, it can be measured whether the light leakage current of the semiconductor devices in the array substrate 210 can cause problems such as the display panel 200 having a flash screen and uneven display.

In summary, the brightness testing device 100 provided in the embodiments of the present application is configured to provide light to the display panel 200 to perform brightness testing on the display panel 200. The light testing device 100 includes a workbench 10, a light source assembly 20 and a light guide tube assembly 30, the display panel 200, the light source assembly 20 and the light guide tube assembly 30 are located on the workbench 10, the light source assembly 20 is disposed at one end of the light guide tube assembly 30, and the display panel 200 is disposed at one end of the light guide tube assembly 30 opposite to the light source assembly 20. The light source assembly 20 provides light to the light guide tube assembly 30, and the light guide tube assembly 30 is used for guiding the light emitted by the light source assembly 20 to the target test area of the display panel 200, so that the light emitted by the light source assembly 20 is prevented from irradiating the rest of test areas of the display panel 200 except the target test area, errors of the brightness test are reduced, and the result of the brightness test is more accurate. In addition, the reliability of the display panel 200 can be more comprehensively evaluated by the light testing apparatus 100, and problems of the display panel 200 can be found during the manufacturing process of the display panel 200, so as to reduce customer complaints and improve product competitiveness.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto. Those skilled in the art will recognize that the implementations of all or part of the procedures described in the embodiments described above and in accordance with the equivalent arrangements of the claims are within the scope of the present application.

Claims (10)

1. The utility model provides a bright testing arrangement for provide light to display panel, its characterized in that, bright testing arrangement includes workstation, light source subassembly and light guide tube subassembly, display panel the light source subassembly and light guide tube subassembly set up in on the workstation, the light source subassembly set up in the one end of light guide tube subassembly, display panel set up in the light guide tube subassembly is facing away from the one end of light source subassembly, the light source subassembly provides light to light guide tube subassembly, the light guide tube subassembly will the light guide that the light source subassembly sent is to the target test area of display panel, in order to right display panel carries out bright test.

2. The light testing device of claim 1, wherein the light guiding barrel assembly comprises a plurality of light guiding barrels and a plurality of connecting pieces, the plurality of light guiding barrels are arranged side by side and sequentially at intervals, the openings of the plurality of light guiding barrels are aligned with each other, and the connecting pieces are connected between the bottoms of two adjacent light guiding barrels.

3. The light testing device of claim 2, further comprising at least one light control element, each light control element disposed between a pair of adjacent light guide cylinders and on the connector, the light control element controlling an area of the light exiting the light guide cylinder assembly.

4. The light testing device according to claim 3, wherein the light control element comprises a light shielding region and a light transmitting region, the light shielding region is surrounded on the periphery of the light transmitting region, the light shielding region blocks the light transmitted in the light guiding tube from passing, and the light transmitting region allows the light transmitted in the light guiding tube to pass.

5. The light testing device of claim 3, further comprising at least one filter element, each filter element disposed between another pair of adjacent light guide cylinders and on the connector, the filter element adjusting the brightness of the light.

6. The light testing device of claim 5, further comprising a plurality of limiting structures disposed on outer walls of two adjacent light guiding barrels, the two limiting structures disposed opposite each other, the plurality of limiting structures limiting the light control element between the two adjacent light guiding barrels and the light filtering element between the two adjacent light guiding barrels.

7. The light testing device of claim 6, wherein each of the limiting structures comprises a first limiting member, a second limiting member and a third limiting member, the first limiting member and the second limiting member of one limiting structure are respectively connected with the outer walls of the ends of the adjacent two light guide cylinders facing each other, and the third limiting member is connected between the first limiting member and the second limiting member.

8. The light testing device of any one of claims 1-7, wherein the light source assembly comprises a base, a support column and a light shield, the base is arranged on the workbench, opposite ends of the support column are respectively connected with the base and the light shield, and the light shield is positioned at one end of the light guide cylinder assembly opposite to the display panel;

the light source assembly comprises a light guide tube assembly, a light shield, a light source, a light guide tube assembly and a light guide tube assembly, wherein the light shield is provided with an opening at one end facing the light guide tube assembly, the light source is positioned in the light shield and is exposed out of the opening, and the light source emits light and transmits the light to the light guide tube assembly.

9. The light testing device of any one of claims 1-7, further comprising at least one bracket disposed on the table, the light guide cartridge assembly disposed on the bracket.

10. The light testing device of claim 9, wherein the bracket comprises a base plate, a support body, a first support column and a second support column, the base plate is arranged on the workbench, the support body is connected to one side of the base plate opposite to the workbench, one end of the first support column, one end of the second support column are connected with one end of the support body opposite to the base plate, one end of the first support column opposite to the support body is arranged at a distance from one end of the second support column opposite to the support body, and the light guide cylinder assembly is arranged between the first support column and the second support column.