Backlight detection jig

Abstract

The application relates to the technical field of backlight detection jigs, and specifically provides a backlight detection jig, which comprises a jig body, a backlight placing groove arranged on the jig body and used for placing and fixing a backlight to be detected, a golden finger placing groove arranged on the jig body and communicated with the backlight placing groove and used for placing a golden finger of the backlight, an electrification groove arranged on the jig body and communicated with the golden finger placing groove and used for electrifying the golden finger, a pressing piece hinged to the electrification groove and used for fixing the golden finger in the electrification groove, and a detection switch group comprising an illumination switch, a red light switch, a green light switch and a blue light switch. The illumination detection circuit and the three-primary-color illumination circuit originally belonging to two sets of clamps are unified to one station; the detection switch group can quickly switch the whole lamp illumination mode and the three-primary-color color detection mode without replacing the jig, the link of transferring the product between different jigs is omitted, and the backlight failure rate is reduced.

Description

Technical Field

[0001] This application relates to the field of backlight testing fixture technology, and more particularly to a backlight testing fixture. Background Technology

[0002] Backlight illumination and backlight tri-color light (red, green, and blue) detection are both important backlight testing items. However, currently, backlight illumination and backlight tri-color light detection require different fixtures, i.e., dual-station and dual-detection fixtures are needed. This not only increases costs, but also increases the probability of product defects when transferring between different fixtures.

[0003] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a backlight detection fixture, which aims to solve the problem that the backlight illumination detection and tri-color light detection in the prior art require two different fixtures to be completed, resulting in high cost and increased product defect rate for backlight illumination detection and tri-color light detection.

[0005] The technical solution adopted in this application to solve the technical problem is as follows: A backlight testing fixture is used to perform illumination testing and three-color light detection on a backlight, wherein the backlight testing fixture includes: Fixture body; A backlight placement slot is provided on the fixture body, and the backlight placement slot is used to place and fix the backlight source to be tested; A gold finger placement slot is provided on the fixture body, and the gold finger placement slot is connected to the backlight placement slot. The gold finger placement slot is used to place the gold fingers of the backlight. An electrical channel is provided on the fixture body and is connected to the gold finger placement slot. The electrical channel is used to provide power to the gold finger. A clamping member, which is hinged to the power-conducting groove, is used to fix the gold fingers located in the power-conducting groove; The detection switch group includes a light switch, a red light switch, a green light switch, and a blue light switch.

[0006] Optionally, the backlight placement slot includes a light source limiting section, a pick-and-place section, and a tail limiting section connected in sequence; The light source limiting section and the tail limiting section are used to cooperate in fixing the backlight located in the gold finger placement slot; The light source limiting section is connected to the gold finger placement slot; The pick-and-place section has pick-and-place clearance grooves on both sides along its width direction, and the depth of the pick-and-place clearance grooves is greater than the bottom of the groove at the pick-and-place section.

[0007] Optionally, a first arc-shaped anti-collision groove is provided at the corners of the two groove walls opposite to the tail limiting section; a second arc-shaped anti-collision groove is provided at the corners of the two groove walls opposite to the light source limiting section.

[0008] Optionally, a first anti-collision layer is provided on the bottom and side walls of the gold finger placement groove.

[0009] Optionally, the light switch is set to white, and when the light switch is pressed, the backlight detection fixture performs a light-up test on the backlight. The red light switch is set to red. When the red light switch is pressed, the backlight detection fixture performs a red light test on the backlight. The green light switch is set to green. When the green light switch is pressed, the backlight detection fixture performs a green light test on the backlight. The blue light switch is set to blue. When the blue light switch is pressed, the backlight detection fixture performs a blue light test on the backlight.

[0010] Optionally, the backlight detection fixture further includes: A voltage regulating component is disposed on the fixture body and located on the end face opposite to the backlight placement slot, and is enclosed by a removable bottom shell.

[0011] Optionally, the backlight detection fixture further includes: A voltage detection component is used to detect the current power supply voltage of the backlight detection fixture.

[0012] Optionally, the clamping element includes: Pressure plate; A hinge, the hinge being used to attach the pressure plate to the fixture body; An abutment block is disposed on the end face of the pressure plate facing the gold finger, and the abutment block is used to fix the gold finger.

[0013] Optionally, the pressure plate is configured as a transparent plate.

[0014] Optionally, the pressure plate includes: Pressure plate body; A gripping post, which is detachably connected to the pressure plate body.

[0015] Another technical solution adopted by this application to solve the technical problem is as follows: an in-vehicle display device, which includes the in-vehicle backlight as described above.

[0016] Beneficial effects: This application provides a backlight testing fixture. By sequentially creating a backlight placement slot, a gold finger placement slot, and a power-conducting slot on the fixture body, and placing a clamping component at the power-conducting slot, the fixture integrates a lighting switch and three light switches (red, green, and blue) into a single station. This unifies the lighting detection circuit and the three-primary-color lighting circuit, which were originally separated into two sets of fixtures, into one station. The backlight placement slot precisely positions the backlight under test, avoiding displacement and drops caused by secondary clamping. The gold finger placement slot, in conjunction with the power-conducting slot and the clamping component, uniformly clamps and reliably conducts multi-pin ports in one operation, eliminating wear and poor contact caused by repeated insertion and removal. The detection switch group quickly switches between the whole-lamp lighting mode and the three-primary-color color-by-color detection mode without changing the fixture, significantly reducing testing time. This compact, integrated structure not only saves on the procurement, maintenance, and floor space costs of a complete testing fixture and corresponding station, but also eliminates the need to transfer products between different fixtures, fundamentally reducing the potential defect rate of backlight scratches, electrostatic discharge failures, and other issues. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the backlight testing fixture provided in this application; Figure 2 This is a three-dimensional structural schematic diagram of the backlight detection fixture provided in this application from another perspective; Figure 3 This is a three-dimensional structural diagram of the fixture body of the backlight detection fixture provided in this application; Explanation of reference numerals in the attached figures: 10. Backlight testing fixture; 11. Fixture body; 12. Backlight placement slot; 13. Gold finger placement slot; 14. Power supply slot; 15. Clamping component; 16. Detection switch assembly; 17. Voltage adjustment assembly; 18. Voltage detection assembly; 121. Light source limiting section; 122. Pick-up and placement section; 123. Tail limiting section; 124. Pick-up and placement clearance slot; 125. First arc anti-collision slot; 126. Second arc anti-collision slot; 141. Contact electrode; 151. Pressure plate; 152. Hinge component; 154. Pressure plate body; 155. Holding column; 161. Illumination switch; 162. Red light switch; 163. Blue light switch; 164. Green light switch. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In existing technologies, backlights must undergo illumination detection and tri-color light (red, green, and blue) detection, which require two different fixtures. This necessitates a dual-station, dual-detection fixture setup, increasing costs and increasing the probability of product defects when transferring between different fixtures. Therefore, based on existing illumination and tri-color light illumination circuits, this paper proposes integrating the illumination and tri-color light detection functions of the backlight into a single fixture. This allows for simultaneous illumination and tri-color light detection using a single backlight monitoring fixture, reducing the cumbersome and time-consuming process of performing illumination and tri-color light detection through two separate processes and fixtures. Consequently, this approach saves on the cost of backlight illumination and tri-color light detection, improves their efficiency, and ultimately increases the overall yield rate of the backlight product.

[0022] Please combine Figures 1 to 3The first embodiment of this application provides a backlight testing fixture 10 for performing lighting tests and three-color light detection on a backlight. The backlight testing fixture 10 includes a fixture body 11, a backlight placement slot 12, a gold finger placement slot 13, a power supply slot 14, a clamping member 15, and a detection switch group 16. The backlight placement slot 12 is disposed on the fixture body 11 and is used to place and fix the backlight to be tested, realizing rapid positioning and bearing of the backlight. The gold finger placement slot 13 is disposed on the fixture body 11, and the gold finger... The mounting slot 13 and the backlight mounting slot 12 are connected. The gold finger mounting slot 13 is used to place the gold fingers of the backlight, thereby preventing the gold fingers from being bent or damaged due to the height difference between the surface of the fixture body 11 and the backlight mounting slot 12. The power supply slot 14 is disposed on the fixture body 11 and is connected to the gold finger mounting slot 13. The power supply slot 14 is used to supply power to the gold fingers. It is known that the power supply slot 14 is provided with contact electrodes 141 electrically connected to the gold fingers. The contact electrodes 141 are electrically connected to the existing lighting circuit and the three-color light lighting circuit. The clamping member 15 is hinged to the energized groove 14 to fix the gold fingers located in the energized groove 14, thereby realizing the connection between the backlight under test and the lighting circuit and the three-color light lighting circuit; the detection switch group 16 includes a lighting switch 161, a red light switch 162, a green light switch 164, and a blue light switch 163; the lighting switch 161 is electrically connected to the lighting circuit, and the red light switch 162, green light switch 164, and blue light switch 163 are all electrically connected to the three-color light lighting circuit; when the clamping member 15 connects the power supply contacts of the gold fingers to the contact electrodes 14 in the energized groove 14... 1. After tightening the electrical connection; press the light switch 161 to connect the backlight and the lighting circuit, and the backlight will be lit up emitting white light for subsequent lighting detection; press the red light switch 162 to connect the backlight and the three-color light lighting circuit, and the backlight will be lit up emitting red light for subsequent red light detection; press the green light switch 164 to connect the backlight and the three-color light lighting circuit, and the backlight will be lit up emitting green light for subsequent green light detection; press the blue light switch 163 to connect the backlight and the three-color light lighting circuit, and the backlight will be lit up emitting blue light for subsequent blue light detection.

[0023] In some embodiments, the gold finger placement slot 13 includes a light source limiting section 121, a pick-and-place section 122, and a tail limiting section 123 connected in sequence; the light source limiting section 121 and the tail limiting section 123 are used to cooperate in fixing the backlight located in the gold finger placement slot 13; the light source limiting section 121 is connected to the gold finger placement slot 13; the pick-and-place section 122 is provided with pick-and-place clearance slots 124 on both sides along the width direction, and the depth of the pick-and-place clearance slots 124 is greater than the bottom of the slot at the pick-and-place section 122; thus, the backlight can be quickly and efficiently placed and fixed in the backlight placement slot, and can be conveniently and quickly removed from the backlight placement slot 12; when removing the backlight, the side of the backlight can be effectively fixed through the pick-and-place clearance slots 124 in the pick-and-place section 122, thereby allowing the backlight to be quickly removed.

[0024] In some embodiments, the two corners of the light source limiting section 121 away from the two groove walls of the tail limiting section 123 are provided with first arc-shaped anti-collision grooves 125, thereby effectively preventing the backlight from colliding with the corners of the light source limiting section 121; the two corners of the tail limiting section 123 away from the two groove walls of the light source limiting section 121 are provided with second arc-shaped anti-collision grooves 126, thereby effectively preventing the backlight from colliding with the corners of the tail limiting section 123.

[0025] In some embodiments, a first anti-collision layer is provided on the bottom and side walls of the gold finger placement groove 13, thereby providing one-step protection for the backlight and further reducing the probability of backlight collision damage.

[0026] In some embodiments, the illumination switch 161 is set to white. When the illumination switch 161 is pressed, the backlight detection fixture 10 performs an illumination test on the backlight, thus visually displaying the operation button for the illumination test and reducing the difficulty of operation. The red light switch 162 is set to red. When the red light switch 162 is pressed, the backlight detection fixture 10 performs a red light test on the backlight, thus visually displaying the red light detection operation button for the three-color light test and reducing the difficulty of operation. The green light switch 164 is set to green. When the green light switch 164 is pressed, the backlight detection fixture 10 performs a green light test on the backlight, thus visually displaying the green light detection operation button for the three-color light test and reducing the difficulty of operation. The blue light switch 163 is set to blue. When the blue light switch 163 is pressed, the backlight detection fixture 10 performs a blue light test on the backlight, thus visually displaying the blue light detection operation button for the three-color light test and reducing the difficulty of operation.

[0027] In some embodiments, the backlight detection fixture 10 further includes a voltage adjustment component 17. The voltage adjustment component 17 is disposed on the fixture body 11 and located on the opposite end face of the backlight placement slot 12, and is enclosed by a removable bottom shell. By setting the voltage adjustment component 17, the power supply voltage of the backlight detection fixture 10 can be adjusted according to different types of backlights, increasing the applicability range of the backlight detection fixture 10. Furthermore, since the voltage adjustment component 17 is located inside the fixture, except for specialized process debugging personnel, testing personnel cannot arbitrarily adjust the voltage of the backlight detection fixture 10 during operation, avoiding product dead light abnormalities caused by voltage differences due to different product requirements. Specifically, the voltage adjustment component 17 has resistors on the four branches corresponding to the lighting circuit and the three-color light lighting circuit (red light lighting circuit, green light lighting circuit, and blue light lighting circuit), which controls the total voltage while meeting the voltage requirements of each branch. Moreover, it has better voltage stability than existing fixture power supplies and avoids cross-circuit lighting during the lighting process.

[0028] In some embodiments, the backlight testing fixture 10 further includes a voltage detection component 18, which is used to detect the current power supply voltage of the backlight testing fixture 10. By setting the voltage detection component 18, the current power supply voltage of the backlight testing fixture 10 can be detected before each shift of workers, thereby avoiding mismatch between the power supply voltage of the backlight testing fixture 10 and the backlight to be tested, which could cause damage to the backlight. At the same time, after detecting the current power supply voltage of the backlight testing fixture 10 by the voltage detection component 18, the power supply voltage of the backlight testing fixture can be adjusted to a suitable voltage by the voltage adjustment component 17.

[0029] In some embodiments, the clamping member 15 includes a pressure plate 151, a hinge 152, and an abutment block. The hinge 152 is used to connect the pressure plate 151 to the fixture body 11. The abutment block is disposed on the end face of the pressure plate 151 facing the gold finger and is used to fix the gold finger. After the backlight is placed in the backlight placement slot 12, the pressure plate 151 is pressed down, thereby lifting the abutment block and placing the gold finger in the gold finger placement slot 13 and the power supply slot 14. Then, the pressure plate 151 is released, so that the abutment block, under the action of the hinge 152, electrically connects the gold finger to the contact electrode 141 in the power supply slot 14, thereby facilitating and accurately ensuring the power-on operation of the backlight and providing assurance for lighting detection and three-color light detection. Furthermore, the pressure plate 151 is set as a transparent plate, thereby facilitating the observation of the relative position of the clamping member 15 and the abutment block.

[0030] Furthermore, the pressure plate 151 includes a pressure plate body 154 and a gripping post 155. The gripping post 155 is detachably connected to the pressure plate body 154. By setting the gripping post 155, it is easier to operate the clamping member 15 to clamp the gold fingers of the backlight, and thus it is easier to perform tri-color light detection and lighting detection on the backlight through the backlight detection fixture 10.

[0031] In summary, this application provides a backlight testing fixture for performing illumination testing and three-color light detection on a backlight. It includes: a fixture body; a backlight placement slot disposed on the fixture body for placing and fixing the backlight to be tested; a gold finger placement slot disposed on the fixture body and connected to the backlight placement slot for placing the gold fingers of the backlight; a power-conducting slot disposed on the fixture body and connected to the gold finger placement slot for energizing the gold fingers; a clamping member hinged to the power-conducting slot for fixing the gold fingers located in the power-conducting slot; and a detection switch group including an illumination switch, a red light switch, a green light switch, and a blue light switch. By sequentially creating backlight placement slots, gold finger placement slots, and power-conducting slots on the fixture body, and placing clamping components at the power-conducting slots, and integrating a lighting switch and three light switches (red, green, and blue) into the same fixture, the lighting detection circuit and the three-primary-color lighting circuit, originally belonging to two separate fixtures, are unified into one station. The backlight placement slot precisely positions the backlight under test, avoiding displacement and drops caused by secondary clamping. The gold finger placement slot, together with the power-conducting slot and clamping components, uniformly clamps and reliably conducts multi-pin ports in one go, eliminating wear and poor contact caused by repeated insertion and removal. The detection switch group can quickly switch between the whole-lamp lighting mode and the three-primary-color color-by-color detection mode without changing the fixture, significantly reducing testing time. This compact, integrated structure not only saves the purchase, maintenance, and floor space costs of a complete set of testing fixtures and corresponding stations, but also eliminates the step of transferring products between different fixtures, fundamentally reducing the potential defect rate of backlight scratches, electrostatic discharge failures, etc.

[0032] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A backlight testing fixture for performing illumination testing and three-color light detection on a backlight, characterized in that, The backlight detection fixture includes: Fixture body; A backlight placement slot is provided on the fixture body, and the backlight placement slot is used to place and fix the backlight source to be tested; A gold finger placement slot is provided on the fixture body, and the gold finger placement slot is connected to the backlight placement slot. The gold finger placement slot is used to place the gold fingers of the backlight. An electrical channel is provided on the fixture body and is connected to the gold finger placement slot. The electrical channel is used to provide power to the gold finger. A clamping member, which is hinged to the power-conducting groove, is used to fix the gold fingers located in the power-conducting groove; The detection switch group includes a light switch, a red light switch, a green light switch, and a blue light switch.

2. The backlight detection fixture according to claim 1, characterized in that, The backlight placement slot includes a light source limiting section, a pick-and-place section and a tail limiting section connected in sequence; The light source limiting section and the tail limiting section are used to cooperate in fixing the backlight located in the gold finger placement slot; The light source limiting section is connected to the gold finger placement slot; The pick-and-place section has pick-and-place clearance grooves on both sides along its width direction, and the depth of the pick-and-place clearance grooves is greater than the bottom of the groove at the pick-and-place section.

3. The backlight detection fixture according to claim 2, characterized in that, At the corners of the two groove walls of the light source limiting section away from the tail limiting section, a first arc-shaped anti-collision groove is provided; at the corners of the two groove walls of the tail limiting section away from the light source limiting section, a second arc-shaped anti-collision groove is provided.

4. The backlight detection fixture according to claim 2, characterized in that, The bottom and side walls of the gold finger placement groove are each provided with a first anti-collision layer.

5. The backlight detection fixture according to claim 1, characterized in that, The light switch is set to white. When the light switch is pressed, the backlight detection fixture performs a light-up test on the backlight. The red light switch is set to red. When the red light switch is pressed, the backlight detection fixture performs a red light test on the backlight. The green light switch is set to green. When the green light switch is pressed, the backlight detection fixture performs a green light test on the backlight. The blue light switch is set to blue. When the blue light switch is pressed, the backlight detection fixture performs a blue light test on the backlight.

6. The backlight detection fixture according to claim 1, characterized in that, The backlight detection fixture also includes: A voltage regulating component is disposed on the fixture body and located on the end face opposite to the backlight placement slot, and is enclosed by a removable bottom shell.

7. The backlight detection fixture according to claim 1, characterized in that, The backlight detection fixture also includes: A voltage detection component is used to detect the current power supply voltage of the backlight detection fixture.

8. The backlight detection fixture according to claim 7, characterized in that, The clamping element includes: Pressure plate; A hinge, the hinge being used to attach the pressure plate to the fixture body; An abutment block is disposed on the end face of the pressure plate facing the gold finger, and the abutment block is used to fix the gold finger.

9. The backlight detection fixture according to claim 8, characterized in that, The pressure plate is made of transparent material.

10. The backlight detection fixture according to claim 8, characterized in that, The pressure plate includes: Pressure plate body; A gripping post, which is detachably connected to the pressure plate body.

Images