CN215067128U - Online performance testing device for liquid crystal display drive board - Google Patents
Online performance testing device for liquid crystal display drive board Download PDFInfo
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- CN215067128U CN215067128U CN202121526108.6U CN202121526108U CN215067128U CN 215067128 U CN215067128 U CN 215067128U CN 202121526108 U CN202121526108 U CN 202121526108U CN 215067128 U CN215067128 U CN 215067128U
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Abstract
The utility model relates to the technical field of LCD screen drive boards, and discloses an online performance testing device of an LCD screen drive board, which can avoid the displacement looseness by placing the LCD screen drive board to be tested into a first positioning groove of an upper support plate and realizing the accurate positioning of the LCD screen drive board to be tested through a positioning block, the first positioning groove and a second positioning groove, thereby improving the testing precision, and can display the testing values of voltage and current and the detected defective products through a display screen module by electrically connecting a testing probe respectively arranged on a lower needle plate and an upper needle plate with a testing contact butt on the LCD screen drive board to be tested, and the testing probe is respectively electrically connected with a testing machine, thereby effectively avoiding the box body from damaging the testing probe on the upper needle plate in the transportation process, the method is simple to operate, labor intensity is reduced, detection speed is high, detection accuracy is high, and practicability is high.
Description
Technical Field
The utility model relates to a LCD screen drive plate technical field, in particular to online capability test device of LCD screen drive plate.
Background
The lcd panel driver board is often referred to as an a/D (analog/digital) board, in a sense reflecting the primary function performed by the driver board. The liquid crystal screen driving board is a functional module which completes conversion from an analog signal to a digital signal (or from one digital signal to another digital signal), and simultaneously drives the liquid crystal screen to display an image under the control of the image control unit. The liquid crystal screen driving board generally comprises a main control chip, an MCU (micro control unit) microcontroller, a ROM (read only memory), a power module, a power interface, a VGA (video graphics array) video signal input interface, an OSD (on screen display) keypad interface, a high-voltage board interface, an LVDS (low voltage differential signaling)/TTL (transistor-transistor logic) screen driving signal interface and the like.
The principle of the liquid crystal screen driving board is that video signals sent from a display card of a computer host are sent to a main control chip of the driving board through a VGA video signal input interface on the driving board, and the main control chip controls the liquid crystal screen to display images according to data related to the liquid crystal screen in the MCU. Meanwhile, the MCU microcontroller realizes power control, functional operation and the like of the whole machine. Therefore, the liquid crystal panel driving board is also called a main board of the liquid crystal display. The damage of the liquid crystal screen driving plate can cause the failure phenomena of incapability of starting up, black screen, white screen, patterned screen, ripple interference, key failure and the like, and the liquid crystal screen driving plate occupies a larger proportion in the failure of the liquid crystal display. Therefore, in the manufacturing process of the liquid crystal display driving board, the following performance tests are generally required to be performed on the liquid crystal display driving board:
(1) open circuit, short circuit and connection fault of the element and the network connection;
(2) missing, bad, and plug-in errors;
(3) performing parameter test on all the simulation devices (whether the requirements of specifications are exceeded or not);
(4) detecting a function of a partial Integrated Circuit (IC);
(5) detecting LSI, VLSI connection or welding failure;
(6) the memory or other device with online programming errors is detected.
The qualified rear of detection can leave the factory, however, present liquid crystal screen drive plate capability test adopts manual operation to go on mostly, complex operation, inefficiency.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a liquid crystal screen drive plate performance test device on line, aim at solving the most manual operation that adopts of current liquid crystal screen drive plate performance test and go on, complex operation, the technical problem of inefficiency.
In order to achieve the above object, the present invention provides an online performance testing device for a liquid crystal display driving board, comprising a box body, a cylinder, a lower carrier plate, a lower needle plate, a driving board, an upper carrier plate, an upper needle plate, a protection plate, a testing probe, a positioning block, a display screen bracket, a display screen casing and a display screen module, wherein the cylinder is vertically arranged on two sides of an internal cavity of the box body in parallel, the upper end wall of the box body is concavely provided with a first open slot, the lower needle plate is fixed on the upper end part of the first open slot through a screw detachable manner, the upper carrier plate is arranged on the upper end wall of the lower needle plate through a screw detachable manner, the upper end wall of the driving board is concavely provided with a second open slot, the upper needle plate is arranged on the lower end part of the second open slot through a screw detachable manner, the upper carrier plate is fixed on the lower end wall of the upper needle plate through a screw detachable manner, the two ends of the driving plate are respectively fixedly connected with a cylinder rod of the cylinder, the driving plate is driven by the cylinder to move up and down, a supporting column is vertically and convexly arranged on four vertex angles of the upper end wall of the driving plate respectively, the protecting plate is respectively and fixedly connected with the upper end parts of the supporting columns, the protecting plate is arranged above the second opening groove, the lower supporting plate and the upper supporting plate are respectively and oppositely concavely provided with a first positioning groove and a second positioning groove which are matched with the driving plate of the liquid crystal screen to be detected, the driving plate of the liquid crystal screen to be detected is respectively and detachably embedded in the first positioning groove and the second positioning groove, the bottom of the first positioning groove and the lower needle plate are respectively and oppositely and concavely provided with a plurality of mutually communicated first inserting holes, and the bottom of the second positioning groove and the upper needle plate are respectively and oppositely and concavely provided with a plurality of mutually communicated second inserting holes, the testing probe is embedded in the first inserting hole and the second inserting hole respectively, the positioning blocks are arranged in an L-shaped structure, the positioning blocks are arranged at four vertex angles of the upper end wall of the lower support plate respectively, the inner side wall of each positioning block can be abutted to the outer side walls of the four vertex angles of the liquid crystal screen driving plate to be tested respectively, the display screen support is vertically arranged at the rear end part of the upper end wall of the box body, the display screen shell is arranged at the upper end part of the display screen support, the display screen module is embedded in the front end part of the display screen shell, an industrial personal computer, an electromagnetic valve and a testing machine are arranged in the box body, the electromagnetic valve is electrically connected with the air cylinder and the industrial personal computer respectively, the testing machine is electrically connected with the testing probe and the industrial personal computer respectively, a power supply interface is arranged at the rear end part of the box body, a starting button is arranged at the front end part of the box body, Reset button and switch, just display screen module, power source, start button, reset button and switch equally divide respectively with the industrial computer electricity is connected.
Furthermore, the automatic transmission device further comprises a guide shaft and a sliding sleeve, wherein the guide shaft is vertically arranged on four bottom corners of the lower end wall of the drive plate respectively, the sliding sleeve is embedded on the upper end wall of the box body respectively, and the guide shaft is arranged in the sliding sleeve in a penetrating mode in a vertical sliding mode respectively.
Further, still include ya keli panel, ya keli panel lid is located the front end portion setting of display screen module.
Furthermore, a handle is respectively arranged on two side walls of the box body.
The lower support plate and the lower needle plate are respectively provided with a first positioning hole and a second positioning hole in a concave mode, the two ends of the lower support plate and the two ends of the lower needle plate are opposite to each other, and the positioning pins are detachably embedded in the first positioning holes and the second positioning holes respectively.
Furthermore, a handle groove is concavely arranged on two sides of the upper end wall of the upper carrier plate.
Adopt the technical scheme of the utility model, following beneficial effect has: the technical proposal of the utility model is that the LCD screen driving board to be tested is placed in the first positioning groove of the upper support board, the starting button is pressed, the cylinder drives the driving board to move downwards, the upper support board is buckled on the upper end wall of the lower support board, thereby the LCD screen driving board to be tested is pressed and fixed, and the accurate positioning of the LCD screen driving board to be tested is realized through the positioning block, the first positioning groove and the second positioning groove, thereby the displacement looseness is avoided, the testing precision is improved, the testing probes which are respectively arranged on the lower needle board and the upper needle board are electrically connected with the testing contact butt on the LCD screen driving board to be tested, the testing probes are respectively electrically connected with the testing machine, thereby the online testing of various electrical properties of the LCD screen driving board is completed, and the testing values of voltage and current and the detected defective products can be displayed through the display screen module, thereby the operator is reminded, directly perceived, the protection shield of drive plate upper end can effectively avoid the box to bump the test probe on the needle board in handling, has prolonged test probe's life, and easy operation has reduced intensity of labour, and detection speed is fast, detects the rate of accuracy height, can improve the quality of LCD screen drive plate greatly, and the practicality is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an online performance testing device for a liquid crystal display driver board according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a part of an online performance testing apparatus for a liquid crystal display driver board according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a part of the device for testing online performance of a liquid crystal display driver board according to an embodiment of the present invention;
fig. 4 is a schematic partial structural diagram of another view angle of the device for testing online performance of a liquid crystal display driver board according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another part of an online performance testing apparatus for a liquid crystal display driver board according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a lcd screen drive board to be tested of an lcd screen drive board online performance testing apparatus according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a liquid crystal screen drive plate online performance test device.
As shown in fig. 1 to 6, in an embodiment of the present invention, the device for testing the online performance of the lcd panel driving board comprises a box 101, a cylinder 102, a lower board 103, a lower board 104, a driving board 105, an upper board 106, an upper board 107, a protection board 108, a test probe (not shown), a positioning block 109, a display screen bracket 110, a display screen casing 111, and a display screen module (not shown), wherein the cylinder 102 is vertically disposed on two sides of an internal cavity of the box 101 in parallel, an upper end wall of the box 101 is recessed with a first open slot (not shown), the lower board 103 is detachably fixed on an upper end portion of the first open slot by screws, the upper board 103 is detachably disposed on an upper end wall of the lower board 104 by screws, an upper end wall of the driving board 105 is recessed with a second open slot 1051, the upper board 107 is detachably disposed on a lower end portion of the second open slot 1051 by screws, the upper carrier plate 106 is detachably fixed on the lower end wall of the upper needle plate 107 by screws, two ends of the drive plate 105 are respectively fixedly connected with a cylinder rod of the cylinder 102, the drive plate 105 is driven by the cylinder 102 to move up and down, a support column 1052 is vertically and convexly arranged at four top corners of the upper end wall of the drive plate 105, the protection plate 108 is respectively fixedly connected with the upper end part of the support column 1052, the protection plate 108 is arranged above the second opening groove 1051, the lower carrier plate 103 and the upper carrier plate 106 are respectively oppositely and concavely provided with a first positioning groove 1031 and a second positioning groove 1061 which are matched with the liquid crystal screen drive plate 200 to be tested, the liquid crystal screen 200 to be tested is respectively and detachably embedded in the first positioning groove 1031 and the second positioning groove 1061, the bottom of the first positioning groove 1031 and the lower needle plate 104 are respectively and oppositely and concavely provided with a plurality of first inserting holes 112 which are mutually communicated, the bottom of the second positioning groove 1061 and the upper pin 107 are respectively and oppositely provided with a plurality of second inserting holes 113 which are communicated with each other, the test probes are respectively embedded in the first inserting holes 112 and the second inserting holes 113, the positioning blocks 109 are all arranged in an L-shaped structure, the positioning blocks 109 are respectively arranged at four vertex angles of the upper end wall of the lower carrier plate 103, the inner side walls of the positioning blocks 109 can be respectively abutted against the outer side walls of the four vertex angles of the liquid crystal screen drive plate 200 to be tested, the display screen bracket 110 is vertically arranged at the rear end part of the upper end wall of the box body 101, the display screen shell 111 is arranged at the upper end part of the display screen bracket 110, the display screen module is embedded at the front end part of the display screen shell 111, and the box body 101 is internally provided with an industrial personal computer (not shown), an electromagnetic valve (not shown) and a testing machine (not shown), the electromagnetic valves are respectively and electrically connected with the air cylinder 102 and the industrial personal computer, the testing machine is respectively and electrically connected with the testing probe and the industrial personal computer, a power interface (not shown) is arranged at the rear end of the box body 101, a starting button 1011, a reset button 1012 and a power switch 1013 are arranged at the front end of the box body 101, and the display screen module, the power interface, the starting button 1011, the reset button 1012 and the power switch 1013 are respectively and electrically connected with the industrial personal computer.
Specifically, the device further comprises guide shafts 114 and sliding sleeves 115, wherein the guide shafts 114 are respectively vertically arranged on four bottom corners of the lower end wall of the driving plate 105, the sliding sleeves 115 are respectively embedded on the upper end wall of the box body 101, and the guide shafts 114 are respectively arranged in the sliding sleeves 115 in a penetrating manner in a vertical sliding manner.
Specifically, still include ya keli panel 116, ya keli panel lid is located the front end setting of display screen module.
Specifically, a handle 117 is disposed on each of two side walls of the box 101.
Specifically, the device further comprises a positioning pin 118, a first positioning hole (not shown) and a second positioning hole (not shown) are respectively and oppositely recessed at two ends of the lower carrier plate 103 and the lower needle plate 104, and the positioning pin 118 is respectively and detachably embedded in the first positioning hole and the second positioning hole.
Specifically, a handle groove 1032 is concavely arranged on two sides of the upper end wall of the upper carrier plate 103, so that the liquid crystal screen driving board to be tested can be conveniently taken and placed.
Specifically, the utility model, by placing the LCD screen driving board to be tested into the first positioning groove of the upper carrier plate, pressing the start button, the cylinder drives the driving board to move downwards, the upper carrier plate is buckled on the upper end wall of the lower carrier plate, thereby compressing and fixing the LCD screen driving board to be tested, and realizing the accurate positioning of the LCD screen driving board to be tested through the positioning block, the first positioning groove and the second positioning groove, avoiding the displacement looseness, improving the testing precision, through the test probes respectively installed on the lower needle plate and the upper needle plate and the test contact butt electric connection on the LCD screen driving board to be tested, the test probes are respectively connected with the testing machine, thereby completing the on-line test of various electrical properties of the LCD screen driving board, and the test values of voltage and current and the detected defective products can be displayed through the display screen module, prompting the operator, intuitionally and clearly, the protection shield of drive plate upper end portion can effectively avoid the box to bump the test probe on the needle board in handling, has prolonged test probe's life, and easy operation has reduced intensity of labour, and detection speed is fast, detects the rate of accuracy height, can improve the quality of LCD screen drive plate greatly, and the practicality is strong.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (6)
1. The device for testing the online performance of the liquid crystal display driving board is characterized by comprising a box body, a cylinder, a lower supporting board, a lower needle plate, a driving board, an upper supporting board, an upper needle plate, a protective plate, a testing probe, a positioning block, a display screen support, a display screen shell and a display screen module, wherein the cylinder is vertically arranged on two sides of an inner cavity of the box body in parallel, the upper end wall of the box body is concavely provided with a first open slot, the lower needle plate is fixed on the upper end part of the first open slot through a screw in a detachable manner, the upper supporting board is arranged on the upper end wall of the lower needle plate through a screw in a detachable manner, the upper end wall of the driving board is concavely provided with a second open slot, the upper needle plate is arranged on the lower end part of the second open slot through a screw in a detachable manner, the upper supporting board is fixed on the lower end wall of the upper needle plate through a screw in a detachable manner, the two ends of the driving plate are respectively fixedly connected with a cylinder rod of the cylinder, the driving plate is driven by the cylinder to move up and down, a supporting column is vertically and convexly arranged on four vertex angles of the upper end wall of the driving plate respectively, the protecting plate is respectively and fixedly connected with the upper end parts of the supporting columns, the protecting plate is arranged above the second opening groove, the lower supporting plate and the upper supporting plate are respectively and oppositely concavely provided with a first positioning groove and a second positioning groove which are matched with the driving plate of the liquid crystal screen to be detected, the driving plate of the liquid crystal screen to be detected is respectively and detachably embedded in the first positioning groove and the second positioning groove, the bottom of the first positioning groove and the lower needle plate are respectively and oppositely and concavely provided with a plurality of mutually communicated first inserting holes, and the bottom of the second positioning groove and the upper needle plate are respectively and oppositely and concavely provided with a plurality of mutually communicated second inserting holes, the testing probe is embedded in the first inserting hole and the second inserting hole respectively, the positioning blocks are arranged in an L-shaped structure, the positioning blocks are arranged at four vertex angles of the upper end wall of the lower support plate respectively, the inner side wall of each positioning block can be abutted to the outer side walls of the four vertex angles of the liquid crystal screen driving plate to be tested respectively, the display screen support is vertically arranged at the rear end part of the upper end wall of the box body, the display screen shell is arranged at the upper end part of the display screen support, the display screen module is embedded in the front end part of the display screen shell, an industrial personal computer, an electromagnetic valve and a testing machine are arranged in the box body, the electromagnetic valve is electrically connected with the air cylinder and the industrial personal computer respectively, the testing machine is electrically connected with the testing probe and the industrial personal computer respectively, a power supply interface is arranged at the rear end part of the box body, a starting button is arranged at the front end part of the box body, Reset button and switch, just display screen module, power source, start button, reset button and switch equally divide respectively with the industrial computer electricity is connected.
2. The device for testing the online performance of the liquid crystal display driving board according to claim 1, further comprising guide shafts and sliding sleeves, wherein the guide shafts are respectively vertically arranged on four bottom corners of the lower end wall of the driving board, the sliding sleeves are respectively embedded on the upper end wall of the box body, and the guide shafts are respectively arranged in the sliding sleeves in a penetrating manner in a vertically sliding manner.
3. The device for testing the online performance of the liquid crystal display driving board according to claim 1, further comprising an acrylic panel, wherein the acrylic panel is arranged at the front end of the display screen module in a covering manner.
4. The device for testing the online performance of the liquid crystal display driving board according to claim 1, wherein handles are respectively arranged on two side walls of the box body.
5. The device for testing the on-line performance of the liquid crystal display driving board according to claim 1, further comprising positioning pins, wherein a first positioning hole and a second positioning hole are respectively formed in the two opposite ends of the lower carrier board and the lower pin board in a concave manner, and the positioning pins are respectively and detachably embedded in the first positioning hole and the second positioning hole.
6. The on-line performance testing device of the liquid crystal screen driving board according to claim 1, wherein a handle groove is concavely formed on both sides of an upper end wall of the upper carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526108.6U CN215067128U (en) | 2021-07-06 | 2021-07-06 | Online performance testing device for liquid crystal display drive board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526108.6U CN215067128U (en) | 2021-07-06 | 2021-07-06 | Online performance testing device for liquid crystal display drive board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215067128U true CN215067128U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121526108.6U Active CN215067128U (en) | 2021-07-06 | 2021-07-06 | Online performance testing device for liquid crystal display drive board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215067128U (en) |
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2021
- 2021-07-06 CN CN202121526108.6U patent/CN215067128U/en active Active
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