imaging technology tft lcd zc853400 manufacturer

Luckily, technology delivers the tools doctors need to make the most accurate diagnosis possible. Perhaps nowhere is this more prominent than in medical imaging displays.

Such displays make it easy for medical professionals to peer into a patient’s body to better understand the ailment. For instance, computed tomography (CT) and magnetic resonance imaging (MRI) have become mainstream tests, saving doctors from guesswork and enabling them to save countless lives.

Moreover, medical imaging technology is not only crucial to diagnosis, but also for monitoring a confined patient’s condition. Enter any ward or patient room and you’ll see patient monitoring equipment keeping track of a person’s heart rate, blood pressure and other vital signs. Advanced imaging technologies are also needed in operating rooms, where high-quality screens help guide complicated surgical procedures by doctors.

Given the ubiquity of display technology in the medical field, it’s not surprising that it has become a burgeoning market. According to data from NPD Display Search, the medical imaging display market is expected to grow by 5 per cent this year. As Tom Fender of NPD states, “Technology continues to advance at a rapid pace, creating new medical imaging procedures that require sophisticated, high resolution and larger display solutions.”

To satisfy this demand, manufacturers are using more advanced technologies to aid medical professionals. Once such example are screens that utilize TFT LCD display technology. TFT is short for thin film transistor. In such screens each pixel contains its own tiny transistor. As a result, the screen can refresh the image several times per second, guaranteeing the most accurate image possible–a benefit for doctors, no doubt.

The great thing about this technology is that you can order screens in custom sizes, ranging from 3.5 to 12.1 inches. Regardless of the device’s size, there is always a TFT LCD display for it.

Of course, if you’re looking for a TFT module, be sure to work only with trusted suppliers like Microtips Technology, which not only distributes but also manufactures their own modules. With their help, you can create the perfect screen for any and all medical imaging equipment in your hospital.

The TFT LCD monitor is a flat and ultra-thin display device, composed of a certain number of colors or black and white pixels, which are placed in front of the light source or the reflective surface. LCD displays are favored by engineers because of their low power consumption and are suitable for electronic devices that run on batteries. Its main working principle is to stimulate the liquid crystal molecules to generate dots, lines and surfaces with the back light tube to form a picture.

Traditional CRT monitors use picture tube technology for imaging, so they need a built-in vacuum picture tube and an electron gun at the end, so that the length is generally more than 30 cm, and the volume of the entire display is larger. The uart display TFT LCD uses liquid crystal material, and then applies the corresponding imaging technology to display, without installing a picture tube inside the display, so that the volume is small.

The traditional CRT display is limited by display technology, and its size is smaller than the display area of the fluorescent screen. However, due to the different imaging principles of liquid crystal displays, the marked size is the actual display area.

The CRT display adopts cathode picture tube imaging. The electron beam contained in it will generate a lot of static electricity and radiation during operation, and the faster the electron beam runs, the greater the radiation. Long-term use will cause damage to the eyes and skin, such as eye myopia, skin allergies and other problems. However, because the LCD display uses liquid crystal material, it does not need to use electron beams when working, so there are no problems of static electricity and radiation that affect vision. In addition, the formation of a picture of the CRT display is formed by scanning, and only when the scanning frequency reaches a certain value, there is no flicker, while the TFT LCD display display does not need the scanning process, and a picture is formed almost at the same time, even if the refreshed frequency is very low, there is no flicker at all.

In addition to the power consumption of the circuit and the picture tube, the CRT display also has the power consumption of the display screen, while the tft lcd power consumption is mainly on the backlight and the circuit, and the power consumption of the display screen can be ignored. In addition, because the liquid crystal display does not use a picture tube and an electron gun for imaging like a CRT display, it does not need to consider the high radiation effect caused by increasing the electron beam emitted by the electron gun, but only obtains the brightness through the backlight emitted by the fluorescent tube. Therefore, it has a stronger anti-interference ability, and even in an environment with concentrated light, it will present a good display effect.

The traditional CRT monitor mostly adopts the analog display mode, and the displayed signal output adopts the analog output mode, which may cause the loss of the image during the transmission process, resulting in the decline of the picture quality. Outputting digital signals will not cause signal loss, but at present, most LCD monitors still use VGA interfaces for analog monitors, and only a few manufacturers have set up digital video signal interfaces.

Due to the different materials and technologies used in TFT liquid crystal displays, some of its parameters are generally relatively fixed, which requires more intelligent performance adjustment of the display. In this regard, each manufacturer has its own mature technology.

LCD (liquid crystal display) is the most widely used display technology. They are used for automotive, appliance, telecommunication, home appliance, industrial, consumer electronic, military etc. But LCD displays have some drawbacks, such as slow response, narrow viewing angle, lower contrast etc. One annoying phenomenon often complained about by users is image sticking.

If a fixed image remains on a display for a long period of time, the faint outline of that image will persist on the screen for some time before it finally disappears. Normally, it happens to LCD and plasma screens, but for the purpose of our discussion, we will focus on TFT LCD displays. Image sticking is also referred to as “image persistence”, “image retention”, “ghosting” or “burn-in image.”

An LCD screen includes a thin layer of liquid crystal material sandwiched between two electrodes on glass substrates, with two polarizers on each side. A polarizer is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. The electrodes need to be transparent so the most popular material is ITO (indium tin oxide). Since an LCD can’t emit light itself, normally a backlight is placed behind an LCD screen in order to be seen in a dark environment. The light sources used for a backlight can be LED (light emitting diode) or CCFL (cold cathode fluorescent lamps). The LED backlight is the most popular. Of course, if you want a color display, a layer of RGB color filter can be made into an LCD cell. A touch panel can also be added in front of an LCD display.

When an electric field is applied to the liquid crystal molecules, they become untwisted. When the polarized light reaches the layer of liquid crystal molecules, the light passes straight through without being twisted. When it reaches the second polarizer, it will also pass through, meaning the viewer sees the display as bright. Because LCD technology uses electric fields instead of electric current (electron passes through), it has low power consumption.

The cause of LCD image sticking is due to an accumulation of ionic impurities inside the liquid crystal materials. When slight DC voltage occurs, the charged impurities will move the electrodes and build up a reversed voltage field. When the power is removed, the reversed voltage will kick in to make the LCD molecules twisted different from the other part of the LCD, which shows up as the image sticking. The longer the time, the more impurities will migrate, the larger the reversed voltage will be, and the imaging sticking will appear worse.

For LCD manufacturers, try to protect liquid crystal materials exposed to the air by using nitrogen gas or dried air to avoid absorbing moisture that can create a huge amount of impurities in the liquid crystal material, as water is an excellent solvent. Controlling the humidity of the fab is also very important, as is selecting the right liquid crystal materials and their manufacturers. Different liquid crystal materials have different moisture absorbing abilities. Different liquid crystal material factories have different capabilities in terms of controlling impurities. Despite the fact that high purity can mean high in cost, using higher purity liquid crystal materials and designing the circuitry to get rid of DC in LCD display drivers can avoid an image sticking issue.

Unlike the “burn-in” issue common with CRTs, an image sticking issue is not permanent. It will eventually recover after some time. One way to expedite erasing a retained image is to have a screen on in an all-black pattern for 4-6 hours. If you want to make it even faster, the display can be put into an environment with a temperature of around 35 to 50°C for 1-2 hours. As this elevated temperature is within the working temperature range, it will not damage the LCD panels.

Non-contact thermal imaging devices can quickly measure and display temperature reading on TFT LCD screen. So, a large number of people can be checked individually and quickly.

Suitable for different environments – high brightness, wide viewing angle, weather proof and anti-UV measurement enable TFT display working in both indoor and outdoor settings.

3.5 inch colour LCD from Topway is such TFT LCD that fits for handheld thermal imaging device. The screen features 480×320 resolution and 262K colors, can nicely present thermal image in fine details. Very low power consumption and compact in size make it perfect for hand-held thermal imaging application.

As we are transitioning out of the epidemic phase, businesses are re-opening. We see more and more information robots deployed across shopping malls, office buildings, transportation hubs, etc. These robots usually have infrared camera and TFT LCD touch screen installed. And they become the first line defence to weed out potential COVID-19 virus carrier. Moreover, the high-definition colour TFT LCD touch screen turns the robot into shopping guide, information desk, and advertising carrier, etc.

A Smart TFT LCD Display from Topway is perfect for thermal imaging device’s screen. Smart TFT LCD display embeds LCD driver, controller and MCU, sets engineer free from tedious UI & touch screen programming. HMT121ATA-D is a 12-inch Smart LCD display module with 1024 x 768 high-definition resolution, multi-touches capacitive touch screen.

Using touch screen LCD has become a normal practice in modern society. We are very much used to such Human Machine Interface. From cell phone display to thermal imaging system’s screen, TFT LCD display is a necessity in our day-to-day lives.