CN219225878U

CN219225878U - Antistatic integrated liquid crystal display panel

Info

Publication number: CN219225878U
Application number: CN202223186643.9U
Authority: CN
Inventors: ***
Original assignee: Yantai Tejing Electronics Co ltd
Current assignee: Yantai Tejing Electronics Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-20
Anticipated expiration: 2032-11-29

Abstract

The utility model provides an antistatic integrated liquid crystal display panel which comprises a power module, a driving control board, an effective static discharge circuit, a TVS circuit, a panel and a PVC film arranged on the panel, wherein the driving control board is arranged on the inner side of the panel, and the PVC film is arranged on one side of the panel away from the driving control board. The utility model adopts an effective static discharge circuit and a TVS loop to restrain the electric quick transient impulse interference. The signal port and the data port are added with small resistance and small capacitance to form a decoupling network, so that the stability of data transmission is improved, meanwhile, possible electrostatic discharge impact on a control line or a data line can be buffered through the resistance, and the resistive-capacitive network form of the discrete element has a very good effect even on high-standard high-voltage static electricity and pulse group tests.

Description

Antistatic integrated liquid crystal display panel

Technical Field

The utility model belongs to the technical field of liquid crystal display panels, and particularly relates to an antistatic integrated liquid crystal display panel.

Background

At present, the liquid crystal display device gradually replaces the traditional cathode ray tube display device for computers, and is very suitable for being applied to desktop computers, notebook computers, personal digital assistants, mobile phones, televisions and various office automation and audio-visual equipment due to the characteristics of light weight, thinness, small size and the like. Generally, a liquid crystal display device includes a liquid crystal display panel for displaying a picture and a backlight module for providing a light source required for the display of the liquid crystal display panel.

When stronger external static electricity invades the liquid crystal display panel, the leading-out end is exposed to the outside, the path of the external static electricity entering the driving line and the driving integrated circuit chip is still provided, and the discharging and conducting capacity of the static electricity discharging protection unit is limited, so when the external static electricity is stronger, part of the external static electricity still enters the driving line and the driving integrated circuit chip, and along with the miniaturization development trend of the driving line and the driving integrated circuit chip of the liquid crystal display panel, the antistatic capacity of the driving line and the driving integrated circuit chip is reduced, even if a smaller amount of external static electricity still damages the driving line and the driving integrated circuit chip, and the antistatic capacity of the liquid crystal display panel adopting the static electricity protecting measure is also lower.

Disclosure of Invention

The utility model provides an antistatic integrated liquid crystal display panel with reasonable design and simple structure aiming at the technical problems of the prior liquid crystal display panel.

In order to achieve the above purpose, the utility model adopts the technical scheme that the antistatic integrated liquid crystal display panel comprises a power module, a drive control board, an effective static discharge circuit, a TVS circuit, a panel and a PVC film arranged on the panel, wherein the drive control board is arranged on the inner side of the panel, and the PVC film is arranged on one side of the panel away from the drive control board.

Preferably, the drive control board includes RA8835, a serial MCU interface including pins SCL, SDI, SDO, SCS, and RA8835 including pin DR, RD, WR, CS, and a serial Flash/ROM including pin SFCL, SFDI, SFDO.

Preferably, the panel is made of aluminum alloy plate, the panel is provided with an input hole for inputting and passing through, a display hole for placing a screen, and a wiring hole is arranged on one side of the display hole.

Preferably, the PVC film is provided with a shielding wiring layer, a key wiring layer, an insulating layer, a conductive printing layer and a PVC pattern layer in sequence, and the PVC film is provided with a transparent conductive film at the position of the display hole of the panel.

Preferably, an ESD bi-directional anti-static diode is provided between the drive control board and the power module.

Preferably, the drive control board is provided with a plurality of small resistors.

Preferably, the power supply module bridges the bidirectional fast transient diode between VCC and GND.

Compared with the prior art, the utility model has the advantages and positive effects that the utility model adopts an effective static discharge circuit and a TVS loop to inhibit the electric fast transient impulse interference. The signal port and the data port are added with small resistance and small capacitance to form a decoupling network, so that the stability of data transmission is improved, meanwhile, possible electrostatic discharge impact on a control line or a data line can be buffered through the resistance, and the resistive-capacitive network form of the discrete element has a very good effect even on high-standard high-voltage static electricity and pulse group tests.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a liquid crystal display panel;

FIG. 2 is a schematic view of a PVC film structure;

FIG. 3 is a schematic diagram of a logical portion of a user interface;

FIG. 4 is a serial Flash/ROM schematic;

FIG. 5 is a schematic diagram of a liquid crystal display;

FIG. 6 is a schematic diagram of a serial MCU interface;

FIG. 7 is a drive control board diagram;

in the above figures, 1, panel; 11. an input hole; 12. a display hole; 13. a wiring hole; 2. a PVC film; 21. shielding wiring layers; 22. a key wiring layer; 23. an insulating layer; 24. a conductive printed layer; 25. PVC pattern layer.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

An embodiment, as shown in fig. 1 to 7, an antistatic integrated liquid crystal display panel 1 includes a power module, a driving control board, an effective static discharge circuit, a TVS circuit, a panel 1, and a PVC film 2 disposed on the panel 1, wherein the driving control board is disposed on the inner side of the panel 1, and the PVC film 2 is disposed on one side of the panel 1 away from the driving control board.

In order to realize the function of controlling the liquid crystal display by the drive control board, in this embodiment, the drive control board includes RA8835, a serial MCU interface and a serial Flash/ROM, the serial MCU interface includes pins SCL, SDI, SDO, SCS, RA8835 includes pin DR, RD, WR, CS, the serial Flash/ROM includes pins SFCL, SFDI, SFDO, DR as a data bus for data transmission and reception, RD as a read control signal, WR as a read/write control signal, CS as a chip selection control signal, SCL as an SPL clock, including serial 3-wrie, 4-wrie or IIC interface clocks, SDL as IIC data or 4-wrie SPL data input, SDO as 3-wrie SPL data, 4-wrie SPL data output, SCS as SPL chip selection, sfsfcl as an external Flash/ROM serial interface, SFDI as external Flash/rormspl data input, SFDO as external Flash/mspl data output.

In order to improve the whole electromagnetic interference shielding capability of the panel 1 as far as possible and to have the strength capable of bearing the pressing force of the membrane switch, the panel 1 adopts an aluminum alloy plate, an input hole 11 for inputting and passing through and a display hole 12 for placing a screen are arranged on the panel 1, a wiring hole 13 is arranged on one side of the display hole 12, the aluminum alloy plate has the advantages of light weight and strong bending deformation resistance, the input hole 11 is arranged, information can be conveniently input, the display hole 12 is used for installing a liquid crystal display screen, and the wiring hole 13 is used for connecting various circuits.

In order to realize the function of the PVC film 2, in this embodiment, the PVC film 2 is sequentially provided with a shielding wiring layer 21, a key wiring layer 22, an insulating layer 23, a conductive printing layer 24 and a PVC pattern layer 25, the PVC film 2 is provided with a transparent conductive film at the display hole 12 of the panel 1, and when the PVC film 2 is attached to the panel 1, a transparent conductive film with a sheet resistance of 15 ohms needs to be flatly pressed between the transparent PVC at the liquid crystal display position and the display hole 12, so that the high-voltage electrostatic impact of the display window can be effectively shielded.

In order to prevent the drive control board from being damaged, in this embodiment, an ESD bidirectional antistatic diode is provided between the drive control board and the power module, and the ESD bidirectional antistatic diode is provided for an overvoltage-preventing and antistatic protection element.

In order to buffer the electrostatic discharge impact, in this embodiment, the driving control board is provided with a plurality of small resistors, the signal and data ports are added with small resistors and small capacitors to form a decoupling network, so as to improve the stability of data transmission, and meanwhile, the possible electrostatic discharge impact on the control line or the data line can be buffered through the resistors.

In order to protect the circuit, in this embodiment, the power module is connected across the bidirectional fast transient diode between VCC and GND, and the bidirectional fast transient diode is provided to provide an additional path for current, so as to avoid the possibility of breaking down the switch or burning out the circuit when the circuit voltage is too high, and at this time, the TVS provides a current path through this diode, so that the TVS releases the extra electricity, but does not discharge fully, does not conduct, and does not break down, and the diode works in a reverse bias state in normal times, which is almost equivalent to an open circuit, so that the electrical appliance can still work normally.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The utility model provides an antistatic integrated form liquid crystal display panel, its characterized in that includes power module, drive control panel, effective static electricity discharge circuit, TVS return circuit, panel and the PVC membrane of setting on the panel, the drive control panel sets up in the panel inboard, the PVC membrane sets up in the panel one side of keeping away from the drive control panel.

2. The antistatic integrated liquid crystal display panel of claim 1, wherein the drive control board comprises RA8835, a serial MCU interface comprising pin SCL, SDI, SDO, SCS, and a serial Flash/ROM comprising pin DR, RD, WR, CS, and wherein the serial Flash/ROM comprises pin SFCL, SFDI, SFDO.

3. The antistatic integrated liquid crystal display panel according to claim 2, wherein the panel is made of an aluminum alloy plate, an input hole for inputting and passing through and a display hole for placing a screen are formed in the panel, and a wiring hole is formed in one side of the display hole.

4. The antistatic integrated liquid crystal display panel according to claim 3, wherein the PVC film is provided with a shielding wiring layer, a key wiring layer, an insulating layer, a conductive printing layer and a PVC pattern layer in this order, and the PVC film is provided with a transparent conductive film at a panel display hole position.

5. The integrated liquid crystal display panel of claim 4, wherein an ESD bi-directional anti-static diode is disposed between the driving control board and the power module.

6. The antistatic integrated liquid crystal display panel according to claim 5, wherein the driving control board is provided with a plurality of small resistors and capacitors.

7. The integrated anti-static lcd panel of claim 6, wherein the power module is connected across a bi-directional fast transient diode between VCC and GND.