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CN-224216968-U - LCD (liquid crystal display) module with enhanced antistatic performance

CN224216968UCN 224216968 UCN224216968 UCN 224216968UCN-224216968-U

Abstract

The utility model relates to an LCD (liquid crystal display) module with enhanced antistatic performance, which comprises a display screen, a driving chip, a PCB (printed circuit board), a iron frame, a conductive zebra strip and a PE (polyethylene) foam pad. The driving chip selects a chip with higher antistatic performance and a protection circuit is arranged at the port, and the TVS diode is connected in series with the power supply port of the PCB. The iron frame is made of galvanized material or stainless iron material and is reliably grounded with the PCB circuit board through the conductive zebra stripes. The distance between the pin electrode of the display screen and the iron frame at the position of fixing the screwed pins is larger than 0.5 mm, and a PE foam pad is arranged between the display screen and the iron frame. Through the design, the antistatic performance of the module is effectively improved, display interference or damage caused by static invasion is prevented, and the module has the advantages of simple structure and reliable performance.

Inventors

  • LIN JINJI

Assignees

  • 厦门高卓立光电有限公司

Dates

Publication Date
20260508
Application Date
20250429

Claims (10)

  1. 1. An LCD liquid crystal display module having enhanced antistatic properties, comprising: a display screen (1); The driving chip (2), the port of the driving chip (2) is provided with a protection circuit (21); The driving chip (2) is arranged on the PCB (3), and a TVS diode (7) is connected in series with a power supply port of the PCB (3); The iron frame (4) is in conductive connection with the PCB (3) through a conductive zebra stripe (5); the conductive zebra stripes (5) are arranged between the display screen (1) and the PCB (printed circuit board) (3) and are used for reliably grounding the iron frame (4) and the PCB (printed circuit board) (3); The PE foam pad (6) is arranged between the display screen (1) and the iron frame (4) and is used for isolating and buffering static electricity; The distance between the pin electrode of the display screen (1) and the iron frame (4) at the fixed pin screwing position is H, and H is larger than 0.5mm.
  2. 2. The LCD module of claim 1, wherein the driving chip (2) has an antistatic rating of 4000V or more under HBM (Human Body Model).
  3. 3. The LCD module with enhanced anti-static performance according to claim 1, wherein the TVS diode (7) is a bi-directional TVS diode (7) with a rated reverse breakdown voltage of between 5V and 12V.
  4. 4. An LCD liquid crystal display module with enhanced antistatic properties according to claim 1, characterized in that the iron frame (4) is a galvanized iron frame.
  5. 5. An LCD liquid crystal display module with enhanced antistatic properties according to claim 1, characterized in that the conductive zebra stripes (5) are made of carbon-based conductive material.
  6. 6. An LCD liquid crystal display module with enhanced antistatic properties according to claim 1, characterized in that the PE foam pad (6) has a thickness of 0.2 mm to 0.5 mm.
  7. 7. An LCD liquid crystal display module with enhanced antistatic properties according to claim 1, characterized in that the PCB circuit board (3) is provided with an antistatic protective coating in the area close to the lead electrodes.
  8. 8. An LCD liquid crystal display module with enhanced antistatic properties according to claim 1, characterized in that the display screen (1) is an ITO electrode liquid crystal screen and the surface resistance value of the ITO electrode is more than 50 ohm per square.
  9. 9. An LCD liquid crystal display module with enhanced antistatic performance according to claim 1, wherein the iron frame (4) is elastically pressed onto the PCB circuit board (3) by the conductive zebra stripes (5).
  10. 10. The LCD liquid crystal display module with enhanced antistatic performance according to claim 1, wherein a conductive foam is disposed between the iron frame (4) and the PCB (3), so as to further enhance the ground conduction effect.

Description

LCD (liquid crystal display) module with enhanced antistatic performance Technical Field The utility model relates to the technical field of liquid crystal display modules, in particular to an LCD liquid crystal display module with enhanced antistatic performance. Background The main components of the display module are resistor, capacitor, TVS diode, driving IC, connecting conductor, display screen and fixed iron frame. The display screen is usually determined through the content to be displayed, a special driving IC is selected, an external component is selected through the driving IC, a TVS diode is added on a power supply of the driving chip to prevent static electricity from damaging the driving chip through a power end, the components are combined on a PCB to form what is commonly called COB, then the display screen is placed in a fixed iron frame, a conductive zebra strip is placed, the COB is covered, and the COB is pressed and then the iron frame feet are screwed for fixation. At present, LCD modules are widely used in various electronic devices, and static electricity is usually generated on the LCD modules. The antistatic effect of the conventional LCD module is mostly unsatisfactory. The existence of static electricity has a great influence on the quality of the LCD module, for example, static electricity is easy to be stricken to the inner side of the LCD module along the edge of the LCD module, so that the display effect of the LCD module can be interfered, and the display screen can be seriously and directly disabled. Therefore, the antistatic capability is a major consideration in the manufacturing process of the LCD module. In view of this, the present inventors have specifically devised an LCD liquid crystal display module with enhanced antistatic performance, and this results. Disclosure of utility model (One) solving the technical problems The application aims to provide an LCD (liquid crystal display) module with enhanced antistatic performance, which at least solves the problem of display interference or screen failure caused by static invasion in the use process of the LCD module. (II) technical scheme In order to solve the technical problems, the utility model provides the following technical scheme: the application provides an LCD liquid crystal display module with enhanced antistatic performance, comprising: A display screen; The port of the driving chip is provided with a protection circuit; The driving chip is arranged on the PCB, and a TVS diode is connected in series with a power supply port of the PCB; The iron frame is in conductive connection with the PCB through a conductive zebra stripe; The conductive zebra stripes are arranged between the display screen and the PCB and are used for reliably grounding connection between the iron frame and the PCB; the PE foam pad is arranged between the display screen and the iron frame and used for isolating and buffering static electricity; The distance between the pin electrode of the display screen and the iron frame at the fixed pin screwing position is H, and H is larger than 0.5mm. In a further scheme, the antistatic grade of the driving chip meets the HBM (Human Body Model) standard and is more than or equal to 4000V. In a further scheme, the TVS diode is a bidirectional TVS diode, and the rated reverse breakdown voltage is between 5V and 12V. In a further scheme, the iron frame is a galvanized iron material frame. In a further aspect, the conductive zebra stripes are made of carbon-based conductive material. In a further aspect, the PE foam pad has a thickness of 0.2 millimeters to 0.5 millimeters. In a further scheme, an antistatic protective coating is arranged on the PCB in a region close to the pin electrode. In a further scheme, the display screen is an ITO electrode liquid crystal screen, and the surface resistance value of the ITO electrode is greater than 50 ohms per square. In a further scheme, the iron frame is elastically pressed on the PCB through the conductive zebra stripes. In a further scheme, conductive foam is arranged between the iron frame and the PCB, so that the grounding conduction effect is further enhanced. (III) beneficial effects Compared with the prior art, the utility model has the following beneficial effects: Through adopting the drive chip that antistatic performance is higher and the port has protection circuit in the liquid crystal display module, establish ties TVS diode at PCB power supply port, use galvanized or stainless iron material to make the chase and realize reliable ground connection through electrically conductive zebra stripes, set up PE bubble cotton pad and carry out physical isolation and keep being greater than 0.5 millimeter safe interval between pin electrode and chase, built a circuit protection, the comprehensive antistatic system that structural optimization and material selection combined together, effectively blocked static along the module edge invasion and disturbed or d