CN219642037U

CN219642037U - ITO (indium tin oxide) wiring metal-plated black-and-white liquid crystal display screen

Info

Publication number: CN219642037U
Application number: CN202321280908.3U
Authority: CN
Inventors: 俞希轮
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-09-05
Anticipated expiration: 2033-05-24

Abstract

The utility model discloses a black-and-white liquid crystal display screen plated with metal on ITO wiring, comprising: the liquid crystal display screen is characterized in that a driving IC and an FPC are bound on the liquid crystal display screen, an ITO wiring used for connection is arranged between the driving IC and the FPC, an impedance piece used for reducing load is arranged on the ITO wiring, the impedance and loss of the ITO wiring are reduced, the load is reduced, and the problems of display contrast and cross effect of the liquid crystal display screen are controlled.

Description

ITO (indium tin oxide) wiring metal-plated black-and-white liquid crystal display screen

Technical Field

The utility model relates to the technical field of liquid crystal display screens, in particular to a black-and-white liquid crystal display screen with ITO wiring metal plating.

Background

A display screen is a digital display technology that can filter light sources through liquid crystal and color filters to produce images on a flat panel. Compared with the traditional Cathode Ray Tube (CRT) display screen, the LCD display screen has the advantages of small occupied space, low power consumption, low radiation, no flicker, reduced visual fatigue and the like, and is widely applied.

In the prior art, black-and-white liquid crystal display panels generally use ITO glass as a substrate, and ITO is etched to form a connection between a driving IC and an FPC on the liquid crystal display panel. However, the etched ITO trace has a larger resistance, and especially in the case of more pins bound to the FPC, the impedance value of the ITO trace exceeds the requirement of the driving IC specification, which may cause problems such as low contrast ratio or serious cross effect on the display of the liquid crystal display, and affect the normal use of the liquid crystal display.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a black-and-white liquid crystal display screen with ITO wiring metal plating.

The aim of the utility model is realized by the following technical scheme:

a black and white liquid crystal display of ITO trace metallization, comprising: the liquid crystal display comprises a liquid crystal display screen, wherein a driving IC and an FPC are bound on the liquid crystal display screen, an ITO wiring used for connection is arranged between the driving IC and the FPC, and an impedance piece used for reducing load is arranged on the ITO wiring.

In one embodiment, the liquid crystal display includes an upper polarizer, an upper glass, a lower glass and a lower polarizer, which are sequentially disposed, and the driving IC and the FPC are bound to the lower glass.

In one embodiment, the impedance element is molybdenum aluminum molybdenum, and the molybdenum aluminum molybdenum is plated on one side of the ITO wire, which is away from the lower glass layer.

In one embodiment, the molybdenum aluminum molybdenum is plated on the surface of the ITO wire in a sputtering mode.

In one embodiment, the driving IC and the FPC are both disposed on a side of the lower glass facing the upper glass, and the driving IC is located below the FPC.

In one embodiment, an ITO pin is disposed on top of the lower glass layer, and the FPC is aligned and bound to the ITO pin.

In one embodiment, the mounting positions of the driving IC and the FPC are provided with protective silica gel for protection, and the protective silica gel covers the outer sides of the driving IC and the FPC.

Compared with the prior art, the utility model has at least the following advantages:

according to the black-and-white liquid crystal display screen plated with the metal on the ITO wiring, the molybdenum, aluminum and molybdenum are plated on the surface of the ITO wiring, so that the impedance and loss of the ITO wiring are reduced, the load is reduced, the problems of display contrast and cross effect of the liquid crystal display screen are well controlled, and the reality effect of the liquid crystal display screen is better. Secondly, since the ITO wiring impedance and loss become smaller, the drive IC can drive a larger-sized liquid crystal display under the same conditions.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described.

FIG. 1 is a schematic diagram of a black and white LCD screen with ITO wiring metal plating provided by the utility model;

FIG. 2 is a schematic diagram of the front surface of a black-and-white LCD screen with ITO wiring metal plating provided by the utility model;

fig. 3 is a schematic diagram of the structure of an ITO trace in a black-and-white lcd screen with a metal plated on the ITO trace.

Description of the drawings: 10. a liquid crystal display; 11. a polaroid is arranged on the upper surface of the substrate; 12. upper glass; 13. a lower layer of glass; 14. a lower polarizer; 20. an ITO pin; 30. an FPC; 40. a driving IC; 50. protecting the silica gel; 60. ITO wiring; 70. molybdenum, aluminum and molybdenum.

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.

Referring to fig. 1, a black-and-white liquid crystal display screen with ITO wiring metal plating is disclosed, the black-and-white liquid crystal display screen comprises a liquid crystal display screen 10, wherein the liquid crystal display screen 10 comprises an upper polarizer 11, an upper glass 12, a lower glass 13 and a lower polarizer 14 which are sequentially arranged, a liquid crystal material is filled between the upper glass 12 and the lower glass 13, and the upper glass 12 and the lower glass 13 are respectively attached to the upper polarizer 11 and the lower polarizer 14 after being attached to the liquid crystal material.

Referring to fig. 1 and 2, the upper glass 12 and the lower glass 13 are ITO glass, and ITO is indium tin metal oxide, and has conductivity. The top of lower floor glass 13 is provided with a plurality of ITO pins 20, and a plurality of ITO pins 20 are equidistant to be distributed along the length direction of lower floor glass 13, and a plurality of ITO pins 20 all are located the middle part position of lower floor glass 13. The ITO pins 20 are bound with the FPC30, the FPC30 is a flexible circuit board, and the plurality of ITO pins 20 are bound with metal pads on the FPC30 in an alignment manner so as to realize signal conduction.

Referring to fig. 1 and 2, a driving IC40 for driving the liquid crystal display 10 is provided on the lower glass 13, the driving IC40 is located under the plurality of ITO pins 20, and the driving IC40 is located on a side of the lower glass 13 facing the upper glass 12. The mounting positions of the drive IC40 and the FPC30 are covered with the protective silica gel 50, the protective silica gel 50 covers the exposed positions of the outer sides of the drive IC40 and the FPC30, the protective silica gel 50 can further protect the drive IC40 and the ITO pins 20, and the possibility that the mounting areas of the drive IC40 and the FPC30 are in contact with external conditions is reduced.

Referring to fig. 3, an ITO trace 60 for connecting the driving IC40 and the FPC30 is provided between the driving IC40 and the FPC30, the ITO trace 60 is etched on the lower glass 13, and both ends of the ITO trace 60 are connected to the driving IC40 and the FPC30, respectively.

Referring to fig. 3, a metal coating of molybdenum, aluminum and molybdenum 70 is disposed on a side of the ITO trace 60 facing away from the lower glass 13, and the molybdenum, aluminum and molybdenum 70 is plated on the surface of the ITO trace 60 by sputtering, i.e. on the side of the ITO trace 60 facing away from the lower glass 13. The surface resistance of the upper and lower glass layers 13 of the liquid crystal display screen 10 is at least 7 ohms, and the surface resistance of the molybdenum aluminum molybdenum 70 is about 0.3 ohms, and under the condition that the driving IC40 is not replaced, the molybdenum aluminum molybdenum 70 is plated on the ITO wiring 60, so that the impedance and the loss of the ITO wiring 60 are reduced, the load is reduced, and the problems of the display contrast and the cross effect of the liquid crystal display screen 10 are well controlled. Second, since the impedance and loss of the ITO wiring 60 become small, the driving IC40 can drive the larger-sized liquid crystal display panel 10 under the same conditions.

Referring to fig. 3, the driving IC40 is mounted by a packaging technology of COG, which is a process of packaging the driving IC40 onto the lower glass 13, so that the driving IC40 can drive some large-sized liquid crystal display panels 10, thereby achieving the effects of optimizing the structure and reducing the material cost.

The above 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 various modifications and improvements can be made without departing from the spirit of the utility model, which are 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

1. A black and white liquid crystal display screen with ITO trace metallization, comprising: the liquid crystal display (10), bind on liquid crystal display (10) and have drive IC (40) and FPC (30), drive IC (40) with be provided with ITO wiring (60) that are used for connecting between FPC (30), be provided with the impedance piece that is used for reducing the load on ITO wiring (60).

2. The black and white liquid crystal display of claim 1, wherein the liquid crystal display (10) comprises an upper polarizer (11), an upper glass (12), a lower glass (13) and a lower polarizer (14) which are sequentially arranged, and the driving IC (40) and the FPC (30) are bound to the lower glass (13).

3. A black and white liquid crystal display with an ITO trace being metallized according to claim 2, characterized in that the impedance element is molybdenum aluminum molybdenum (70), the molybdenum aluminum molybdenum (70) being plated on the side of the ITO trace (60) facing away from the underlying glass (13).

4. A black and white liquid crystal display of an ITO trace metallization according to claim 3, characterized in that the molybdenum aluminum molybdenum (70) is plated onto the surface of the ITO trace (60) by sputtering.

5. The black and white liquid crystal display of claim 2, wherein the driving IC (40) and the FPC (30) are disposed on a side of the lower glass (13) facing the upper glass (12), and the driving IC (40) is disposed below the FPC (30).

6. The black and white liquid crystal display of claim 5, wherein the top of the lower glass (13) is provided with an ITO pin (20), and the FPC (30) is aligned and bonded to the ITO pin (20).

7. The black and white liquid crystal display of claim 6, wherein the mounting positions of the driving IC (40) and the FPC (30) are provided with a protective silicone (50) for protection, and the protective silicone (50) covers the outer sides of the driving IC (40) and the FPC (30).