Examination of The Liquid Crystal Display Module

Views: 324     Author: Reshine Display     Publish Time: 2024-01-30      Origin: Site


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Examination of The Liquid Crystal Display Module

1. How Can the Liquid Crystal Display Module Be Troubleshooted While It's in Use?

Liquid crystal display modules are extensively and widely used in many applications. However, did you know that improper installation techniques, inappropriate settings, inappropriate use, or unqualified accessories can occasionally cause a qualified liquid crystal display module to fail while it is in use? The following are the causes and debugging techniques:

1.1 The liquid crystal display module's abnormal and erratic displays are eliminated

The back electrode being suspended, the drive being DC, the power supply fluctuating, the contact being poor, the battery running low, etc. could all be the cause of the chaotic display. It can be excluded for a variety of reasons.

1.2 Removal of the LCD module's ambiguous display

Following assembly, the pen segments that aren't supposed to be visible are also displayed in a way that makes them hard to read. One possible explanation is that the lead isn't clean. Using a dry muslin cloth, wipe it off.

The glass surface is conductive and the weather is excessively humid. Once the room dries out, it can be restored. After a dependable reinstallation, the segment electrode, also known as the common electrode, is suspended and may be removed. The AC square wave's asymmetrical upper and lower amplitudes lead to an ambiguous cutoff when it is extinguished. To solve it, change the square wave's amplitude.

Simply replace the conductive rubber strips if they are incorrect and the insulation is not performing well.

1.3 Removing the LCD module's low contrast

The LCD display module's extremely low contrast, the appearance of a negative image, a disorganized display, or any combination of these issues are typically caused by the back electrode's suspension, which is fixable.

1.4 Removal of the liquid crystal display module's sporadic display

The display is sporadic, the function is disorganized, and it cannot be adjusted. The battery needs to be changed right now because the power supply voltage is abnormal and the battery is depleted.

1.5 Removal of the LCD module's disorganized display

Eliminate any external interference as it could potentially confuse the LCD module.

1.6 LCD module excludes "Handwriting"

Several hours or days of use result in the electrodes changing color and appearing as "writing" in black or brown, and the liquid crystal cell producing bubbles that prevent the display. This is a result of an electrochemical reaction brought on by the driving voltage's excessively high direct current component. Examine the circuit, take out the overly strong DC component, and install a new LCD module in its place. Related product: 10.1 Lvds TFT LCD Modules.

The liquid crystal display device can be heated to a temperature higher than storage when the "writing" first appears. This can be done even if the liquid crystal display module's display surface is completely black. Once the device has naturally cooled, the "writing" should generally disappear.

1.7 Complete removal of the liquid crystal display module's display

Every pixel is visible, but the decoder is functioning normally. Usually, one of two things happens: either the back electrode is connected to DC or it is not connected correctly.

1.8 The causes of the LCD module's lack of stroke display and its removal

Poor assembly contact is caused by dirty conductive rubber and electrode leads. After cleaning, the two aforementioned items only need to be reassembled.

2. Liquid Crystal Display Module Luminance and Visual Angle Analysis

2.1 Liquid Crystal LCD Module Brightness

Something in between a solid and a liquid is called a liquid crystal. It needs additional light sources because it is unable to emit light on its own. As a result, the brightness of the liquid crystal display module is correlated with the number of lamps.

The upper and lower lamps of the first liquid crystal display module were the only two in number. As of right now, the most expensive of the popular types has six lamps, while the lowest has four. There are three different ways to arrange the four lamps in a design. The first involves placing a lamp on each of the four sides, which has the drawback of creating shadowy areas in the center.

The four lamps should be arranged parallel from top to bottom as the solution. The final placement form is a "U"-shaped one made up of two tubes that are two lamps hidden. Three lamps are used in the six-lamp design. To create the illusion of six lamps, the LCD module manufacturer bends each of the three lamps into a "U" shape before placing them in parallel.

2.2 The Liquid Crystal LCD Display Module's Viewing Angle

The liquid crystal display module's viewing angle is uncomfortable. The output light becomes directional when it travels through the liquid crystal, polarizer, and orientation layer caused by the backlight source. Put another way, because the majority of the light from the LCD is emitted vertically, it is impossible to see the original color when viewing it from a wider angle. You will only be able to see all black or all white.

3. The TFT LCD Screen Design Process

The display interface for human-computer interaction is an essential component in the design of electronic products. Since TFT LCD screens are currently in high demand, what makes a TFT display screen? What steps are involved in designing a TFT display?

3.1 TFT display screen components

The front frame, polarizer, color filter, liquid crystal, TFT glass, diffuser, driver integrated circuit, plastic frame, backlight, rear panel, main control board, and other components make up the TFT display. Thus, the design of the LCD display is also more difficult and time-consuming.

3.2 The TFT display screen was designed using the following methodology

By the customer's submitted drawings, we must first confirm with the customer if a special design is required. Next, we created the machine's overall display screen scheme based on the specifications provided by the client. Following a period of constant communication, we forwarded the TFT display screen assembly drawing to the client for verification. Once the customer has verified that our drawings are accurate, they will formally proceed to the project approval phase, where they will carry out research and development on samples. Following receipt of the TFT display screen sample, the customer will debug the entire machine and, following one pass, move on to the next small batch stage.

Reshine Display can satisfy customers' dependability needs thanks to its expert product testing tools and reliability standards. It is a very competent producer of touch and display screens for industrial use.

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