Light guide plate detection jig and light guide plate detection workbench
By setting the light source and light exit surface in the light guide plate detection fixture, the light is concentrated against the light inlet part of the light guide plate, the problem of insufficient light in the light guide plate detection is solved, the detection accuracy and efficiency are improved, and the backlight brightness is avoided too high risk.
Patent Information
- Application Number
- CN202322953746.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-01
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2033-11-01
AI Technical Summary
In the prior art, when the light guide plate quality is detected, the light entering the light guide plate is insufficient, resulting in low detection accuracy and efficiency, and excessive backlight brightness will damage the eyes of the detector.
Design a light guide plate detection fixture, including a base plate and a light source, the light source is arranged at the end of the light source of the base plate, and the light exit surface is used to abut the light inlet part of the light guide plate, and the light enters concentratedly from the light inlet part on the side of the light guide plate to improve the guidance Brightness of the light plate.
Light up the light guide plate by concentrated light, improve detection accuracy and efficiency, increase factory yield, and avoid eye damage caused by excessive backlight brightness.
Smart Images
Figure CN222529235U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of light guide plate detection equipment, and in particular to a light guide plate detection fixture and a light guide plate detection workbench. Background Art
[0002] After the light guide plate is processed and manufactured, defects are inevitable, such as breakage and cracking caused by poor injection molding, burrs and cloaks on the edge of the light guide plate, and surface scratches and black spots. In order to screen out unqualified light guide plates with these defects, it is necessary to conduct quality inspections on the produced light guide plates.
[0003] In the prior art, a light guide plate is usually placed on a backlight (surface light source) and the light transmittance of the light guide plate is used to detect the light guide plate. However, especially when the backlight is a surface light source, fewer lines enter the light guide plate, which results in insufficient brightness of the light guide plate during detection, making it impossible to accurately detect the above defects, resulting in low detection efficiency. The backlight brightness outside the area covered by the light guide plate is too high, which can cause eye damage to the inspector.
[0004] Therefore, the prior art has defects and shortcomings and needs further improvement and development. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of this application is to provide a light guide plate inspection jig and a light guide plate inspection workbench, aiming to solve the problem in the prior art that insufficient light enters the light guide plate during quality inspection of the light guide plate, resulting in low quality inspection accuracy and efficiency.
[0006] The technical solution adopted by the present application to solve the technical problem is as follows: a light guide plate detection fixture, used to detect a light guide plate, the light guide plate having a light incident portion, wherein the light guide plate detection fixture comprises:
[0007] A bottom plate, wherein the bottom plate is provided with a light source end and a bottom end, and the light source end and the bottom end are arranged opposite to each other along the length direction;
[0008] A light source is arranged at the light source end, a surface of the light source facing the bottom end is arranged as a light emitting surface, and the light emitting surface is used to abut against the light incident portion.
[0009] Optionally, the light source includes a light-emitting plate and a fixed plate which are arranged on the base plate in sequence from bottom to top along the height direction; the light-emitting surface is set as the end surface of the light-emitting plate facing the bottom end; the distance between the end surface of the fixed plate facing the bottom end and the bottom end is smaller than the distance between the light-emitting surface and the bottom end.
[0010] Optionally, the fixing plate has a clamping portion protruding toward the bottom end relative to the light-emitting plate, and the clamping portion is used to cooperate with the bottom plate to clamp the light guide plate.
[0011] Optionally, the clamping portion has a first clamping end and a second clamping end that are arranged opposite to each other along the length direction, the first clamping end is arranged close to the light-emitting board, and the distance between the clamping portion and the base plate is gradually reduced from the second clamping end to the first clamping end.
[0012] Optionally, the light source includes a light-emitting plate and a fixed plate arranged on the base plate in sequence from bottom to top along the height direction; the light-emitting surface is set as the end surface of the light-emitting plate facing the bottom end, and the end surface of the fixed plate facing the bottom end is set flush with the light-emitting surface.
[0013] Optionally, corresponding fixing through holes are provided at both ends of the base plate, the light-emitting plate and the fixing plate along the width direction, and fixing bolts are provided in the through holes.
[0014] Optionally, the end surface of the bottom plate where the light source is disposed is configured as a reflective surface.
[0015] Optionally, the light guide plate detection jig further includes a support frame, the support frame is connected to the end surface of the base plate facing away from the light source, and the support frame is configured as a telescopic rod or a triangular plate.
[0016] Optionally, when the support frame is configured as a telescopic rod, the support frame is configured at the light source end;
[0017] When the support frame is configured as a triangular plate, the triangular plate is disposed at the bottom end.
[0018] Another technical solution adopted by the present application to solve the technical problem is as follows: a light guide plate detection workbench, which includes the light guide plate detection fixture as described above.
[0019] Beneficial effects:
[0020] The present application provides a light guide plate inspection jig and a light guide plate inspection workbench. The light guide plate inspection jig arranges a light source (linear light source) at the light source end, and places the light entrance portion of the side of the light guide plate against the light exit surface of the linear light source. Light enters the light guide plate from the light entrance portion of the side of the light guide plate in a concentrated manner, while light generated by the backlight enters the light guide plate locally. This improves the brightness of the light guide plate, the inspection accuracy and the inspection efficiency, increases the factory yield of the light guide plate, and avoids the problem of excessive backlight brightness outside the light guide plate coverage area, which may cause eye damage to the inspector. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional structural schematic diagram of the light guide plate detection fixture provided in this application;
[0022] Figure 2 is a schematic diagram of the three-dimensional structure of the light guide plate detection fixture provided in the present application from another perspective;
[0023] Figure 3 This application Figure 2 A magnified schematic diagram of part A in FIG.
[0024] Figure 4 is a side view schematic diagram of the light guide plate detection fixture provided in the present application;
[0025] Figure 5 is a side view schematic diagram of a deformation structure of a light guide plate detection fixture provided in the present application;
[0026] Figure 6 is a top view schematic diagram of the light guide plate detection fixture provided in this application;
[0027] Figure 7 is a schematic diagram of the three-dimensional structure of the light guide plate detection fixture provided in the present application from another perspective;
[0028] Figure 8 is a schematic diagram of the three-dimensional structure of the light guide plate detection fixture provided in the present application from another perspective;
[0029] Fig. 9 is a side view schematic diagram of another deformed structure of the light guide plate detection fixture provided in the present application;
[0030] Description of reference numerals:
[0031] 10. Light guide plate detection fixture; 11. Bottom plate; 12. Light source; 13. Support frame; 111. Light source end; 112. Bottom end; 113. Reflective surface; 121. Light emitting surface; 122. Light emitting plate; 123. Fixing plate; 124. Fixing through hole; 125. Fixing bolt. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.
[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0035] See also Figures 1 to 8In the first embodiment of the present application, based on the prior art, when inspecting the quality of a light guide plate, insufficient light enters the light guide plate, resulting in low quality inspection accuracy and efficiency, a light guide plate inspection jig 10 is proposed for inspecting the light guide plate, the light guide plate inspection jig 10 comprising: a bottom plate 11 and a light source 12; the bottom plate 11 is provided with a light source end 111 and a bottom end 112, the light source end 111 and the bottom end 112 are arranged opposite to each other along the length direction; the light source 12 is arranged at the light source end 111, and the end surface of the light source 12 facing the bottom end 112 is arranged as a light emitting surface 121, the light emitting surface 121 is used to abut against the light entrance portion of the side of the light guide plate, the light source 12 provides light for the light guide plate, the light enters from the light entrance portion on the side of the light guide plate, and then the light can be concentrated from the light entrance portion to enter the light guide plate, the concentrated light illuminates the light guide plate, so as to inspect the light guide plate For inspection; it can be understood that there is no need to place the light guide plate at the upper end relative to the backlight, and the light entrance part of the light guide plate is placed against the light entrance surface of the light source 12, and the light enters the light guide plate through the light entrance part. The illuminated light guide plate has high brightness, and defects such as cracking of the light guide plate, burrs and cloaks on the edge of the light guide plate, and surface scratches and black spots can be detected; the light guide plate is placed at the upper end relative to the backlight for inspection, and only the local backlight light covered by the light guide plate can enter the light guide plate, and the brightness of the light guide plate is insufficient. By inspecting the light guide plate with the light guide plate detection fixture 10, the light can enter the light guide plate through the light entrance part, which can overcome the defect of missed detection due to insufficient brightness of the light guide plate, improve detection accuracy and efficiency, increase factory yield, and avoid the problem of excessive backlight brightness outside the light guide plate coverage area, which may cause eye damage to the inspector.
[0036] See also Figures 3 to 5 In some embodiments, the light source 12 includes a light-emitting plate 122 and a fixed plate 123 which are sequentially arranged on the base plate 11 from bottom to top along the height direction; the light-emitting surface 121 is arranged as the end surface of the light-emitting plate 122 facing the bottom end 112. During detection, the light incident portion of the light guide plate is placed against the light incident surface of the light source 12, and the light generated by the light-emitting plate 122 is concentratedly emitted through the light-emitting surface 121, enters the light incident portion to illuminate the light guide plate, and the quality of the light guide plate can be detected; in order to prevent the light guide plate from being displaced during detection, the distance between the end surface of the fixed plate 123 facing the bottom end 112 and the bottom end 112 is set to be smaller than the distance between the light-emitting surface 121 and the bottom end 112, and the fixed plate 123 has a clamping portion, which protrudes relative to the light-emitting plate 122 along the direction toward the bottom end 112; it can be understood that the clamping portion cooperates with the base plate 11 to clamp the light incident portion to prevent the light guide plate from being displaced during the detection process.
[0037] Please continue reading Figures 3 to 5In some embodiments, in order to better clamp the light incident portion and prevent the light guide plate from being displaced during the detection process, the clamping portion is provided with a clamping first end and a clamping second end which are relatively arranged along the length direction, the clamping first end is arranged close to the light-emitting plate 122, and the clamping second end is arranged away from the light-emitting plate 122. The distance between the clamping portion and the base plate 11 is arranged to decrease from the clamping second end to the clamping first end. The light guide plate is inserted into the gap between the clamping portion and the base plate 11 from the clamping second end. As the insertion depth increases, the distance between the clamping portion and the base plate 11 gradually decreases, and the friction force gradually increases. It can be understood that by increasing the friction force of the light incident portion, the light guide plate can be prevented from being displaced during the detection process.
[0038] Please continue reading Figures 3 to 5 In some embodiments, the light source 12 includes a light emitting plate 122 and a fixed plate 123 which are sequentially arranged on the base plate 11 from bottom to top along the height direction; the light emitting surface 121 is set as the end surface of the light emitting plate 122 facing the bottom end 112, and the end surface of the fixed plate 123 facing the bottom end 112 is flush with the light emitting surface 121, providing a larger abutment area for the light guide plate, making it convenient for the inspector to abut the light guide plate against the light surface and adjust it to the corresponding position, and at the same time enabling the light guide plate inspection fixture 10 to adapt to light guide plates of different models.
[0039] Please continue reading Figures 4 to 7 In some embodiments, corresponding fixing through holes 124 are provided at both ends of the bottom plate 11, the light-emitting plate 122 and the fixing plate 123 along the width direction, and fixing bolts 125 are provided in the through holes. The fixing bolts 125 cooperate with nuts or internal threads of the fixing through holes 124 to fix the light guide plate and the fixing plate 123 to the light source end 111 from bottom to top along the height direction, thereby improving the stability of the light guide plate detection fixture 10 and preventing the light source 12 from loosening when using the light guide plate detection fixture 10, thereby affecting the detection efficiency.
[0040] See also Figure 8 In some embodiments, the end face of the bottom plate 11 provided with the light source 12 is set as a reflective surface 113, and the reflective surface 113 is used to reflect the light emitted by the light guide plate back to the light guide plate, thereby increasing the brightness of the light guide plate and improving the accuracy of defect detection; when in use, the light generated by the light-emitting plate 122 is concentratedly emitted through the light-emitting surface 121, enters the light incident part to illuminate the light guide plate, and the backlight generated by the light guide plate enters the light guide plate after being reflected by the reflective surface 113, which can make the light guide plate brighter, thereby improving the detection accuracy and efficiency, and increasing the factory yield.
[0041] Please continue reading Figure 5 and Fig. 9In some embodiments, the light guide plate detection jig 10 further includes a support frame 13, the support frame 13 is connected to the end face of the bottom plate 11 away from the light source 12, and the support frame 13 is configured as a telescopic rod or a triangular plate; when the support frame 13 is configured as a telescopic rod, the support frame 13 is disposed at the light source end 111, and the telescopic rod can adjust the use angle of the light guide plate detection jig 10, providing convenience for detection personnel and improving detection efficiency; when the support frame 13 is configured as a triangular plate, the triangular plate is disposed at the bottom end 112, and the triangular plate can improve the stability of the light guide plate detection jig 10, so that the light guide plate detection jig 10 will not be deformed or loosened, especially when detecting a large-area light guide plate, the detection personnel do not need to hold the light guide plate detection jig 10 by hand, and can directly place the light guide plate against the light emitting surface 121 for detection.
[0042] A light guide plate inspection workbench is provided in the second embodiment of the present application, and the light guide plate inspection workbench includes the light guide plate inspection fixture 10 provided in the above-mentioned first embodiment of the present application. It can be seen that the light guide plate inspection work platform provided in this embodiment is convenient for inspectors to inspect light guide plates, and the inspection efficiency is high.
[0043] Specifically, the support frame 13 supports the light guide plate inspection jig 10 so that it forms an acute angle with the light guide plate inspection work platform. The support frame 13, the light guide plate inspection jig 10 and the light guide plate inspection work platform form a stable triangle, and the light guide plate inspection jig 10 is stably placed on the light guide plate inspection work platform. When using the light guide plate inspection jig 10, the light incident part of the light guide plate is placed against the light incident surface of the light source 12, and the light guide plate is lit, and the light guide plate can be quality inspected.
[0044] In summary, the present application provides a light guide plate inspection jig and a light guide plate inspection workbench, the light guide plate inspection jig comprising: a bottom plate, the bottom plate is provided with a light source end and a bottom end, the light source end and the bottom end are arranged opposite to each other along the length direction; a light source, the light source is arranged at the light source end, the side of the light source facing the bottom end is arranged as a light emitting surface, the light emitting surface is used to abut against the light entrance portion. By arranging a light source (linear light source) at the light source end, the light entrance portion of the side of the light guide plate is abutted against the light exit surface of the linear light source, and the light enters concentratedly from the light entrance portion of the side of the light guide plate, relative to the light generated by the backlight partially entering the light guide plate, thereby improving the brightness of the light guide plate, the detection accuracy and the detection efficiency, increasing the factory yield rate of the light guide plate, and avoiding the problem of excessive backlight brightness outside the light guide plate coverage area, which causes eye damage to the inspector.
[0045] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.
Claims
1. A light guide plate inspection jig, used for inspecting a light guide plate, wherein the light guide plate has a light incident portion, characterized in that: Light guide plate inspection fixture includes: A bottom plate, wherein the bottom plate is provided with a light source end and a bottom end, and the light source end and the bottom end are arranged opposite to each other along the length direction; A light source is arranged at the light source end, a surface of the light source facing the bottom end is arranged as a light emitting surface, and the light emitting surface is used to abut against the light incident portion.
2. The light guide plate detection fixture according to claim 1, characterized in that: The light source includes a light-emitting plate and a fixed plate which are sequentially arranged on the base plate from bottom to top along the height direction; the light-emitting surface is arranged as the end surface of the light-emitting plate facing the bottom end; the distance between the end surface of the fixed plate facing the bottom end and the bottom end is smaller than the distance between the light-emitting surface and the bottom end.
3. The light guide plate detection fixture according to claim 2, characterized in that: The fixing plate has a clamping portion which is arranged to protrude toward the bottom end relative to the light-emitting plate, and the clamping portion is used to cooperate with the bottom plate to clamp the light guide plate.
4. The light guide plate detection fixture according to claim 3, characterized in that: The clamping portion has a clamping first end and a clamping second end which are arranged opposite to each other along the length direction. The clamping first end is arranged close to the light-emitting board. The distance between the clamping portion and the base plate decreases from the clamping second end to the clamping first end.
5. The light guide plate detection fixture according to claim 1, characterized in that: The light source includes a light emitting plate and a fixing plate which are sequentially arranged on the bottom plate from bottom to top along the height direction; the light emitting surface is arranged as the end surface of the light emitting plate facing the bottom end, and the end surface of the fixing plate facing the bottom end is arranged flush with the light emitting surface.
6. The light guide plate detection fixture according to any one of claims 2 or 5, characterized in that: The bottom plate, the light emitting plate and the fixing plate are provided with corresponding fixing through holes at both ends along the width direction, and fixing bolts are provided in the through holes.
7. The light guide plate detection fixture according to claim 1, characterized in that: The end surface of the bottom plate provided with the light source is configured as a reflective surface.
8. The light guide plate detection fixture according to claim 1, characterized in that: The light guide plate detection fixture further includes a support frame, which is connected to the end surface of the bottom plate away from the light source, and the support frame is configured as a telescopic rod or a triangular plate.
9. The light guide plate detection fixture according to claim 8, characterized in that: When the support frame is configured as a telescopic rod, the support frame is disposed at the light source end; When the support frame is configured as a triangular plate, the triangular plate is disposed at the bottom end.
10. A light guide plate detection workbench, characterized in that: It comprises the light guide plate detection fixture as described in any one of claims 1 to 9.