CN221101668U - Display screen detecting system - Google Patents
Display screen detecting system Download PDFInfo
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- CN221101668U CN221101668U CN202323023253.4U CN202323023253U CN221101668U CN 221101668 U CN221101668 U CN 221101668U CN 202323023253 U CN202323023253 U CN 202323023253U CN 221101668 U CN221101668 U CN 221101668U
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- lighting
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- voltage
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- 239000011324 bead Substances 0.000 claims abstract description 58
- 238000009792 diffusion process Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The utility model provides a display screen detection system, which comprises a lighting tester, a display screen electrically connected with the lighting tester, and a voltage/current meter, wherein the display screen comprises a backlight plate and a display plate connected with the backlight plate, the backlight plate comprises a diffusion sheet, a light guide sheet and a glue iron sheet which are sequentially arranged along the direction far away from the display plate, a plurality of equidistant LED lamp beads are arranged on one side surface of the light guide sheet, light emitted by the LED lamp beads is diffused into the plane of the display plate through the light guide sheet and the diffusion sheet, so that the display plate is normally displayed, the lighting tester is used for lighting the LED lamp beads, the voltage/current meter is electrically connected with the lighting tester to measure the lighting voltage and the lighting current of the lighting tester in real time, and an early warning device is arranged in the voltage/current meter and alarms when the lighting voltage or the lighting current exceeds a threshold value.
Description
Technical Field
The utility model relates to the technical field of liquid crystal display screen testing, in particular to a display screen detection system.
Background
With the rapid development of the electronic industry, electronic products increasingly enter the work and life of people; LCDs (Liquid CRYSTAL DISPLAY), also known as Liquid crystal displays, are flat, ultra-thin display devices, and have low power consumption, and are therefore favored by engineers.
The liquid crystal display itself does not give out light, but just can realize normal display through being connected with external light source, before the product leaves the factory, need carry out the optical lighting test to the product to verify whether liquid crystal display is qualified, current testing arrangement mainly through the process: the external light source is lightened through the power supply, light emitted by the external light source is diffused to the display screen, so that the display screen displays normally, whether the luminous brightness of the display screen reaches the preset requirement is tested, and if the luminous brightness of the display screen meets the preset requirement, the product test is qualified.
However, the existing external light source mainly comprises a plurality of lamp beads arranged on the same plane, when the lamp beads arranged on the plane are damaged individually, light emitted by the lamp beads is diffused to the display screen, the brightness of the display screen is not changed obviously, and operators are difficult to identify the damaged lamp beads in the testing process, so that the product quality is affected.
Disclosure of utility model
Based on the above, the utility model aims to provide a display screen detection system so as to solve the technical problems in the prior art.
The utility model provides a display screen detection system, which comprises a lighting tester, a display screen and a voltage/current meter, wherein the display screen and the voltage/current meter are electrically connected with the lighting tester, the display screen comprises a backlight plate and a display plate connected with the backlight plate, the backlight plate comprises a diffusion sheet, a light guide sheet and a rubber sheet which are sequentially arranged along the direction far away from the display plate, a plurality of equidistant LED lamp beads are arranged on one side surface of the light guide sheet, light emitted by the LED lamp beads is diffused into the plane of the display plate through the light guide sheet and the diffusion sheet, so that the display plate normally displays, the lighting tester is used for lighting the LED lamp beads, the voltage/current meter is electrically connected with the lighting tester, so that the lighting voltage and the lighting current of the lighting tester are measured in real time, and an early warning device is arranged in the voltage/current meter, and the early warning device alarms when the lighting voltage or the lighting current exceeds a threshold value.
Preferably, the lighting tester is electrically connected with the display screen through an adapter plate.
Preferably, one end of the diffusion sheet, which is far away from the light guide sheet, is connected with a brightness enhancement sheet and a shading rubber frame, and the brightness enhancement sheet is used for improving the display brightness of the display panel.
Preferably, a reflective sheet is connected between the light guide sheet and the ductile iron sheet, and the reflective sheet is used for improving light emitted along the diffusion sheet.
Preferably, the lighting tester is provided with an adjusting key, and the adjusting key is used for adjusting the lighting voltage and the lighting current of the lighting tester.
Preferably, a side of the light guide plate is provided with an FPC, the FPC is electrically connected with a plurality of LED lamp beads, and the lighting tester is connected with the FPC to light a plurality of LED lamp beads.
Preferably, the dimension of the light guide plate in the length direction is larger than the dimension of the diffusion plate in the length direction, and a plurality of LED lamp beads are fixedly arranged in the area, which is not covered by the diffusion plate, of the light guide plate.
The beneficial effects of the utility model are as follows: the display screen detection system provided by the utility model comprises the lighting tester, the display screen electrically connected with the lighting tester, the voltage/current meter, and the LED lamp beads arranged on one side surface of the light guide sheet, so that when the display screen is detected, when the lamp beads are damaged, the workers can find the lamp beads in time conveniently. Further, a voltmeter is electrically connected to the lighting tester for measuring the lighting voltage and the lighting current of the lighting tester. The lighting voltage and the lighting current of the lighting tester are measured in real time through the voltage/current meter, so that the lamp beads can emit light and can reduce the light superposition among the lamp beads, and the lamp beads are convenient for workers to find damaged in time. Further, in the display screen detection system provided by the embodiment, the early warning device is installed in the voltmeter/ammeter, and when the lighting current or the lighting voltage exceeds the threshold value, the early warning device gives an alarm to remind a worker to adjust the output voltage/current of the lighting tester, so that the display screen detection system is suitable for large-scale popularization.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic diagram of a display screen detection system according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the display screen in FIG. 1;
FIG. 3 is a schematic diagram of the backlight plate structure in FIG. 2;
FIG. 4 is an exploded view of the backlight assembly of FIG. 3.
Description of main reference numerals:
10. Lighting up a lamp tester; 11. an adapter plate; 12. adjusting the keys; 20. a display screen; 21. a backlight plate; 211. a diffusion sheet; 212. a light guide sheet; 213. a sheet of iron glue; 214. LED lamp beads; 215. a light enhancement sheet; 216. a shading rubber frame; 217. a reflection sheet; 218. an FPC; a light enhancement sheet; 22. a display panel; 30. a voltmeter/ammeter; 31. an early warning device.
The utility model will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Specifically, as shown in fig. 1 to fig. 4, in the embodiment of the present utility model, the display screen detection system provided in the present embodiment includes a lighting tester 10, a display screen 20 electrically connected to the lighting tester, and a voltage/current meter 30, where the display screen 20 includes a backlight plate 21 and a display plate 22 connected to the backlight plate 21, the backlight plate 21 includes a diffusion sheet 211, a light guide sheet 212, and a glue iron sheet 213 sequentially disposed along a direction away from the display plate 22, a plurality of equidistant LED lamp beads 214 are disposed on a surface of the light guide sheet 212, and light emitted by the plurality of LED lamp beads 214 is diffused into a plane of the display plate 22 through the light guide sheet 212 and the diffusion sheet 211, so that the display plate 22 displays normally, the lighting tester 10 is used to light the plurality of LED lamp beads 214, the voltage/current meter 30 is electrically connected to the lighting tester 10, and an early warning device 31 is installed in the voltage/current meter 30 to measure in real time, and when the lighting voltage or the lighting current exceeds a threshold value.
Optionally, in this embodiment, the display screen is a liquid crystal display screen, and includes a backlight plate 21 and a display plate 22 connected to the backlight plate 21, where light emitted by the backlight plate 21 is diffused to a surface of the display plate 22, so that the display plate displays normally, specifically, the backlight plate 21 includes a diffusion sheet 211, a light guide sheet 212 and a glue iron sheet 213 stacked and connected in sequence, the glue iron sheet 213 is used to improve strength of the backlight plate 21, a plurality of LED lamp beads 214 are disposed on a surface of one side of the light guide sheet 212, and light emitted by the LED lamp beads 214 is diffused to a surface of the display plate 22 through the diffusion sheet 211 and the light guide sheet 212; specifically, the LED lamp beads 214 are arranged on one side surface of the light guide 212, so that when the display screen is detected, the lamp beads are damaged, and the detection is convenient for workers to find in time. Further, the voltmeter 30 is electrically connected to the lighting tester 10 for measuring the lighting voltage and the lighting current of the lighting tester 10.
Preferably, in the present embodiment, when the display screen is detected, the output voltage/current of the lighting tester 10 may be appropriately adjusted so that the LED beads 214 can emit light, and the light emitting areas thereof can be separated from each other. It will be appreciated that when the output voltage/current of the lighting tester 10 is too small, the light emitted by each LED bead 214 is weak, and it is difficult for a worker to distinguish between the damaged bead and the normal light-emitting bead, when the output voltage/current of the lighting tester 10 is too large, the light emitted by each LED bead 214 is strong, and when there is a damaged bead between two light-emitting beads, the light emitted by the light-emitting beads on both sides of the damaged bead may overlap each other, so that the damaged bead will be covered by the damaged bead, which is unfavorable for the worker to identify the damaged bead. In a further embodiment, the display screen detection system provided in this embodiment is provided with an early warning device 31 in the voltmeter 30, and when the lighting voltage or the lighting current exceeds the threshold value, the early warning device alarms to remind the staff to adjust the output voltage/current of the lighting tester 10.
Optionally, in this embodiment, the lighting tester 10 is electrically connected to the display screen 20 through the adapter plate 11. Optionally, one end of the diffusion sheet 211 away from the light guide sheet 212 is connected with a light enhancement sheet 215 and a light shielding glue frame 216, when the backlight 21 is connected with the display panel 22, the light enhancement sheet 215 is disposed close to the display panel 22, and the light enhancement sheet 215 improves the display brightness of the display panel. The light shielding rubber frame 216 is adhered to the periphery of the light enhancement film 215, so that light measurement overflow can be effectively prevented. Further, a reflective sheet 217 is connected between the light guide 212 and the iron glue sheet 213, that is, the reflective sheet 217 and the diffusion sheet 211 are respectively disposed at two ends of the light guide 212, the light emitted by the light guide 212 is reflected on the reflective sheet 217 and then emitted along the diffusion sheet, so that the light is reduced to be absorbed by the iron glue, the light emitted along the diffusion sheet 211 is improved, that is, the light diffused onto the display panel 22 is improved, and the display effect of the display screen is improved.
Optionally, in this embodiment, the lighting tester 10 is provided with an adjusting key 12, and the adjusting key 12 is used for adjusting the lighting voltage and the lighting current of the lighting tester 10, so that the lamp beads can emit light and reduce the light superposition between the lamp beads, and the staff can find the damaged lamp beads in time conveniently. When the light beads emit weak light and the early warning device in the voltage/current meter 30 alarms, a worker can increase the lighting voltage and the lighting current by adjusting the key 12; when the lamp beads emit light strongly and the precaution device in the voltage/current meter 30 alarms, the staff can reduce the lighting voltage and the lighting current by adjusting the keys 12. So as to facilitate the staff to find out the damaged lamp beads in time. Optionally, a side surface of the light guide 212 is provided with an FPC218, the FPC218 is electrically connected with the LED lamp beads 214, the lighting tester 10 is connected with the FPC218 to light the LED lamp beads 214, that is, the FPC218 and the LED lamp beads 214 are disposed on the same side of the light guide 212, and optionally, the size of the light guide 212 in the length direction is greater than the size of the diffusion sheet 211 in the length direction, and the LED lamp beads 214 are fixedly disposed on the light guide 212 in the area not covered by the diffusion sheet 211.
In summary, the display screen detection system provided in this embodiment includes a lighting tester 10, a display screen 20 electrically connected to the lighting tester, and a voltage/current meter 30, where the lighting tester 10 is connected to the display screen through an adapter plate 11, and LED lamp beads 214 are disposed on a side surface of a light guide 212, so that when the display screen is detected, when the lamp beads are damaged, it is convenient for a worker to find in time. Further, the voltmeter 30 is electrically connected to the lighting tester 10 for measuring the lighting voltage and the lighting current of the lighting tester 10. The voltage/current meter 30 measures the lighting voltage and the lighting current of the lighting lamp beads 214 of the lighting lamp measuring machine 10 in real time, so that the lamp beads can emit light and reduce the light superposition between the lamp beads, and the staff can find the damaged lamp beads in time conveniently. In a further embodiment, the display screen detection system provided in this embodiment is provided with an early warning device 31 in the voltmeter 30, and when the lighting voltage or the lighting current exceeds the threshold value, the early warning device alarms to remind the staff to adjust the output voltage/current of the lighting tester 10.
It should be noted that the foregoing implementation procedure is only for illustrating the feasibility of the present application, but this does not represent that the display screen detection system of the present application has only a few implementation procedures, and instead, the display screen detection system of the present application can be incorporated into the feasible implementation of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some 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 utility model. 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.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (7)
1. The utility model provides a display screen detecting system, its characterized in that, including the survey machine of lighting a lamp, with the display screen, voltage/ampere meter that the survey machine of lighting a lamp is electrically connected, the display screen include the back light plate and with the display panel that the back light plate is connected, the back light plate includes along keeping away from diffuser, light guide and the glued iron piece that the display panel direction set gradually, one side surface of light guide is equipped with a plurality of equidistance LED lamp pearl, a plurality of LED lamp pearl sends the light pass through the light guide with the diffuser diffuses to in the display panel plane for make the display panel normal display, the survey machine of lighting a lamp pearl of lighting a lamp is used for lighting a plurality of, voltage/ampere meter with the survey machine of lighting a lamp is electrically connected, in order to measure in real time the lighting voltage and the lighting current of survey machine, install the early warning device in the voltage/ampere meter, when lighting voltage or the lighting current exceeds the threshold value, the early warning device reports to the police.
2. The display screen detection system according to claim 1, wherein the lighting tester is electrically connected to the display screen through an adapter plate.
3. The display screen detection system according to claim 1, wherein one end of the diffusion sheet away from the light guide sheet is connected with a brightness enhancement sheet and a shading rubber frame, and the brightness enhancement sheet is used for improving the display brightness of the display panel.
4. The display screen detection system of claim 1, wherein a reflective sheet is connected between the light guide sheet and the glue sheet, the reflective sheet being configured to enhance light emitted along the diffuser.
5. The display screen detection system according to claim 1, wherein the lighting tester is provided with an adjustment key for adjusting a lighting voltage and a lighting current of the lighting tester.
6. The display screen detection system according to claim 1, wherein an FPC is disposed on a side surface of the light guide sheet, the FPC is electrically connected to the plurality of LED beads, and the lighting tester is connected to the FPC to light the plurality of LED beads.
7. The display screen detection system according to claim 1, wherein the dimension of the light guide sheet in the length direction is greater than the dimension of the diffusion sheet in the length direction, and a plurality of the LED beads are fixedly arranged on the light guide sheet in an area not covered by the diffusion sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323023253.4U CN221101668U (en) | 2023-11-08 | 2023-11-08 | Display screen detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323023253.4U CN221101668U (en) | 2023-11-08 | 2023-11-08 | Display screen detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221101668U true CN221101668U (en) | 2024-06-07 |
Family
ID=91326041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323023253.4U Active CN221101668U (en) | 2023-11-08 | 2023-11-08 | Display screen detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221101668U (en) |
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2023
- 2023-11-08 CN CN202323023253.4U patent/CN221101668U/en active Active
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