CN217605982U

CN217605982U - LCD screen short-term test frock

Info

Publication number: CN217605982U
Application number: CN202220379517.6U
Authority: CN
Inventors: 王俊; 曾坪
Original assignee: Chengdu Delta Biotechnology Co ltd
Current assignee: Chengdu Delta Biotechnology Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-10-18
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a LCD screen short-term test frock, including frock casing and the LCD screen that awaits measuring, including board and display screen pin interface in a poor light, board and display screen pin interface in a poor light are fixed in on the frock casing, the LCD screen that awaits measuring is located the board top in a poor light, and pegs graft with the frock casing through display screen pin interface, be equipped with power source on the frock casing, be equipped with integrated circuit in the frock casing, integrated circuit is connected with board, display screen pin interface, power source electricity respectively in a poor light. Compared with the prior art, the utility model has the advantages of: the utility model discloses simple structure, manufacturing is convenient. Before medical equipment assembles, the staff just can carry out the inspection alone to the LCD screen through the frock, and testing process convenient and fast has avoided the equipment flow of doing over again because of the problem of LCD screen itself causes moreover, has improved work efficiency greatly.

Description

LCD screen short-term test frock

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a LCD screen short-term test frock.

Background

Most of the existing medical equipment is provided with an LCD display screen, and in the process of assembling and leaving factory of the medical equipment, the display detection of the LCD screen needs to be electrified for display and needs to be polished by a backlight plate, and the LCD display screen is generally operated and detected after the equipment is assembled. If the LCD screen has a display problem and needs to be disassembled for replacement and assembly, the medical equipment has more parts, electrical devices and circuits, the disassembly and the assembly are very troublesome, and the working efficiency is very low. Therefore, in order to improve the detection efficiency of the LCD screen, a tool capable of rapidly detecting the LCD screen before assembly is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solve above-mentioned problem, just can be to the LCD screen short-term test frock of LCD screen short-term test before medical equipment assembles.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a LCD screen short-term test frock, includes frock casing and the LCD screen that awaits measuring, including board and display screen pin interface in a poor light, board and display screen pin interface in a poor light are fixed in on the frock casing, the LCD screen that awaits measuring is located the board in a poor light top, and pegs graft with the frock casing through display screen pin interface, be equipped with power source on the frock casing, be equipped with integrated circuit in the frock casing, integrated circuit is connected with board in a poor light, display screen pin interface, power source electricity respectively.

Preferably, the integrated circuit comprises a microcontroller, an LCD driver and a power circuit, the microcontroller is respectively in electrical signal connection with the backlight plate and the LCD driver, the LCD driver is in electrical signal connection with the display screen pin interface, and the power circuit is respectively in electrical connection with the microcontroller, the LCD driver, the backlight plate and the power interface.

Preferably, the power supply circuit comprises a switching power supply circuit, a voltage stabilizing circuit and a bidirectional voltage converter, wherein a 220V VC power supply accessed by the power supply interface is reduced to 24V DC through the switching power supply circuit, enters the bidirectional voltage converter after passing through the voltage stabilizing circuit, is converted into two paths of power supplies of 3.3V and 5V by the bidirectional voltage converter for output, the 3.3V power supply supplies power for the microcontroller, and the 5V power supply supplies power for the backlight panel and the LCD driver.

Preferably, the backlight plate is matched with the shape of the LCD screen to be tested, and the pin interface of the display screen is matched with the pin of the LCD screen to be tested.

Preferably, the backlight plate is horizontally arranged at the top of the tool shell and is fixed on the tool shell through a limiting screw.

Preferably, after the LCD screen to be tested is inserted into the pin interface of the display screen, a gap is reserved between the LCD screen to be tested and the backlight plate.

Preferably, the top of the limiting screw is higher than the backlight plate, and the LCD screen to be tested is supported on the tool shell through the limiting screw.

Compared with the prior art, the utility model has the advantages of: the utility model discloses simple structure, manufacturing is convenient. Before medical equipment assembles, the staff just can carry out the inspection alone to the LCD screen through the frock, and testing process convenient and fast has avoided the equipment flow of doing over again because of the problem of LCD screen itself causes moreover, has improved work efficiency greatly.

Drawings

FIG. 1 is a schematic view of the structure of the tool of the present invention;

fig. 2 is a schematic block circuit diagram of the present invention;

fig. 3 is a wiring diagram of the switching power supply circuit of the present invention;

FIG. 4 is a wiring diagram of the voltage stabilizing circuit of the present invention;

fig. 5 is a wiring diagram of the bidirectional voltage converter of the present invention;

fig. 6 is a wiring diagram of the microcontroller according to the present invention;

fig. 7 is a wiring diagram of the LCD driver of the present invention;

fig. 8 is a wiring diagram of the LCD driver of the present invention;

fig. 9 is a wiring diagram of the switching power supply circuit of the present invention.

In the figure: 1. a tool shell; 2. a backlight plate; 3. a display screen pin interface; 4. a limit screw; 5. and a power interface.

Detailed Description

The present invention will be further explained below.

Example (b): the utility model provides a LCD screen short-term test frock, refers to fig. 1, includes frock casing 1 and the LCD screen that awaits measuring, including board 2 and display screen pin interface 3 in a poor light, board 2 in a poor light and display screen pin interface 3 are fixed in on the frock casing 1, the LCD screen that awaits measuring is located board 2 in a poor light top, and pegs graft with frock casing 1 through display screen pin interface 3, be equipped with power source 5 on the frock casing 1, be equipped with integrated circuit in the frock casing 1, integrated circuit is connected with board 2 in a poor light, display screen pin interface 3, power source 5 electricity respectively.

The integrated circuit comprises a microcontroller, an LCD driver and a power circuit, wherein the microcontroller is respectively in electric signal connection with the backlight plate 2 and the LCD driver, the LCD driver is in electric signal connection with the display screen pin interface 3, and the power circuit is respectively in electric connection with the microcontroller, the LCD driver, the backlight plate 2 and the power interface 5. And a power supply switch is arranged on the power supply circuit and arranged on the tool shell 1. Because the LCD screen to be tested has two groups of pins, two LCD drivers u6 and u7 and the display screen pin interface 3 are correspondingly arranged.

Examine time measuring, insert display screen pin interface 3 with the LCD screen that awaits measuring earlier, open switch, backlight 2 lights, and microcontroller, LCD driver drive LCD screen display that awaits measuring observe the LCD screen that awaits measuring show normally can, do not have the problem to change down a LCD screen inspect can, very convenient and fast.

The schematic block diagram of the integrated circuit is shown in fig. 2, the detailed circuit interface diagrams are shown in fig. 3 to 8, and the circuit interface of the LCD screen to be tested is shown in fig. 9.

The power supply circuit comprises a switch power supply circuit, a voltage stabilizing circuit and a bidirectional voltage converter, wherein a 220V VC power supply accessed by the power supply interface is reduced to 24V DC through the switch power supply circuit, enters the bidirectional voltage converter through the voltage stabilizing circuit, is converted into two paths of power supplies of 3.3V and 5V by the bidirectional voltage converter for output, and the output is 3.3V and 5VThe 3V power supply supplies power for the microcontroller, and the 5V power supply supplies power for the backlight plate 2 and the LCD driver. The power input requirement is 12V-24V +/-10%, 5V and 3.3V power supplies are required in the system, stable power output is provided through a switching power supply circuit and a voltage stabilizing circuit, and the bidirectional voltage converter provides stable power supplies for various electrical appliance elements. The voltage reducer chip adopts LMR14020SDDA, and the voltage stabilizer chip adoptsLM1117IMPX-3.3/NOPBThe device has the functions of reducing and stabilizing voltage; the LCD driver adopts HT1621, HT1621 is a segment code LCD dynamic control chip, a synchronous serial interface can control at most 128 segments of driving modes, can select 1/2, 1/3, 1/4Duty, 1/2 and 1/3Bias, has the power supply voltage of 2.4-5.2V, does not need an external oscillating circuit, and is simple and easy to use; the bidirectional voltage converter adopts a TXS0108E high-speed full-duplex 8-way level conversion module 8-bit bidirectional voltage converter; the microcontroller employs STM32F103RCT6, and STM32F103RCT6 is an embedded-microcontroller Integrated Circuit (IC).

The backlight plate 2 is matched with the LCD screen to be detected in shape, and the whole back of the LCD screen can be illuminated after the LCD screen to be detected is placed on the backlight plate, so that the inspection operation can be conveniently carried out; the pin interface 3 of the display screen is matched with the pins of the LCD screen to be tested, so that the LCD screen to be tested can be conveniently inserted.

The backlight plate 2 level sets up in 1 top of frock casing, and the LCD screen level that awaits measuring is placed on backlight plate 2, and the manual observation of being convenient for, on backlight plate 2 was fixed in frock casing 1 through stop screw 4, should not punch fixedly on the backlight plate 2, can respectively establish 2 stop screw 4 on four corners of backlight plate 2, with backlight plate 2 from the side locking, can spacing fixed. After the LCD screen to be tested is inserted into the pin interface 3 of the display screen, a gap is reserved between the LCD screen to be tested and the backlight plate 2, and the back abrasion of the LCD screen is avoided. The top of the limit screw 4 is higher than the backlight plate 2, the LCD screen to be tested is supported on the tool shell 1 through the limit screw 4, the pin part of the LCD screen to be tested is not prevented from being bent, and 4 protruding heads of the limit screw can provide a supporting point for the inserted LCD screen to be tested.

The above introduces a detailed description of the LCD screen rapid detection tool provided by the present invention, and a specific example is applied herein to explain the principle and implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and core idea of the present invention; while the invention has been described with reference to specific embodiments and applications, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a LCD screen short-term test frock, includes the frock casing and awaits measuring the LCD screen, its characterized in that: the LCD screen to be tested is positioned above the backlight plate and is connected with the tool shell in an inserting mode through the display screen pin interface, the tool shell is provided with a power supply interface, and the tool shell is internally provided with an integrated circuit which is respectively and electrically connected with the backlight plate, the display screen pin interface and the power supply interface.

2. The LCD screen short-term test frock of claim 1, its characterized in that: the integrated circuit comprises a microcontroller, an LCD driver and a power circuit, wherein the microcontroller is respectively in electric signal connection with the backlight plate and the LCD driver, the LCD driver is in electric signal connection with a display screen pin interface, and the power circuit is respectively in electric connection with the microcontroller, the LCD driver, the backlight plate and a power interface.

3. The LCD screen short-term test frock of claim 2, its characterized in that: the power supply circuit is composed of a switch power supply circuit, a voltage stabilizing circuit and a bidirectional voltage converter, a 220V VC power supply accessed by the power supply interface is reduced to 24V DC through the switch power supply circuit, enters the bidirectional voltage converter after passing through the voltage stabilizing circuit, is converted into two paths of power supplies of 3.3V and 5V by the bidirectional voltage converter for output, the 3.3V power supply supplies power for the microcontroller, and the 5V power supply supplies power for the backlight plate and the LCD driver.

4. The LCD screen short-term test frock of claim 1, its characterized in that: the backlight plate is matched with the shape of the LCD screen to be tested, and the pin interface of the display screen is matched with the pin of the LCD screen to be tested.

5. The LCD screen short-term test frock of claim 1, its characterized in that: the backlight plate is horizontally arranged at the top of the tool shell and is fixed on the tool shell through a limiting screw.

6. The LCD screen short-term test frock of claim 1, its characterized in that: and a gap is reserved between the LCD screen to be tested and the backlight plate after the LCD screen to be tested is inserted into the pin interface of the display screen.

7. The LCD screen short-term test frock of claim 5, its characterized in that: the top of the limiting screw is higher than the backlight plate, and the LCD screen to be tested is supported on the tool shell through the limiting screw.