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Monitor Display Panel - pjwij745s - 08-26-2021
BOE monitor display panels cover a full range of products from 18.5 inches to 43 inches, with high image quality, wide viewing angles, high refresh rate, low power consumption, a borderless design, and other features. Resolution of up to 8K can be achieved. The products are widely used in entertainment, office, professional design, and other fields.
BOE LCD panel offers super sharp pictures and great color. But do the pros outweigh the cons when it comes to LCD TV displays? Before deciding on a thumbs up or thumbs down, you should understand how an LCD display works.
Liquid crystal display (LCD), electronic display device that operates by applying a varying electric voltage to a layer of liquid crystal, thereby inducing changes in its optical properties. LCDs are commonly used for portable electronic games, as viewfinders for digital cameras and camcorders, in video projection systems, for electronic billboards, as monitors for computers, and in flat-panel televisions.
Electro-optical effects in liquid crystals
Liquid crystals are materials with a structure that is intermediate between that of liquids and crystalline solids. As in liquids, the molecules of a liquid crystal can flow past one another. As in solid crystals, however, they arrange themselves in recognizably ordered patterns. In common with solid crystals, liquid crystals can exhibit polymorphism; i.e., they can take on different structural patterns, each with unique properties. LCDs utilize either nematic or smectic liquid crystals. The molecules of nematic liquid crystals align themselves with their axes in parallel, as shown in the figure. Smectic liquid crystals, on the other hand, arrange themselves in layered sheets; within different smectic phases, as shown in the figure, the molecules may take on different alignments relative to the plane of the sheets. (For further details on the physics of liquid crystalline matter, see the article liquid crystal.)
The optical properties of liquid crystals depend on the direction light travels through a layer of the material. An electric field (induced by a small electric voltage) can change the orientation of molecules in a layer of liquid crystal and thus affect its optical properties. Such a process is termed an electro-optical effect, and it forms the basis for LCDs. For nematic LCDs, the change in optical properties results from orienting the molecular axes either along or perpendicular to the applied electric field, the preferred direction being determined by the details of the molecule’s chemical structure. Liquid crystal materials that align either parallel or perpendicular to an applied field can be selected to suit particular applications. The small electric voltages necessary to orient liquid crystal molecules have been a key feature of the commercial success of LCDs; other display technologies have rarely matched their low power consumption.
Mechanics of an LCD display
The LCD consists of a large number of pixels, or picture elements, consisting of liquid crystal molecules held between two sets of transparent electrodes.
The liquid crystals react in predictable ways when the electrical charge running between those electrodes is changed — meaning they twist and move in ways that let different amounts (and colors) of light through the crystals. The LCD has a control system that translates your video signals into the proper charges for each electrode. A light source shines through the TV LCD panel and creates your picture.
When compared to the other type of flat-panel display (plasma), LCDs tend to be found on the smaller size of the spectrum. You’ll rarely find a plasma TV smaller than 42 inches, but you can find LCDs at sizes as small as 13 inches.
Benefits of LCD displays
LCD displays have some strong points when it comes to playing video:
· Extremely high resolutions: LCDs can easily reach HDTV resolutions (in fact, most LCD displays do). You can find a 1080p-capable LCD display in all but the smallest sizes — while many plasma displays are still 720p.
· Excellent color: LCDs offer exceptional reproduction of colors, with the potential for beautifully re-created colors across the spectrum. This differs from other flat-panel displays (such as plasma systems), which often tend to display certain colors inaccurately.
· Great picture: The newest and most expensive LCDs use an LED (light emitting diode) instead of a traditional bulb for their light source. These LEDs produce a higher-quality picture because the LED itself emits a more natural (closer to daylight) light than a bulb (which tends to be yellowish, not true white).
· Energy efficiency: LCD HDTVs are perhaps the greenest HDTVs. Compared to plasmas, LCD HDTVs use less electricity to run. You can probably expect to use about 30 percent less power for an LCD than for a similar-sized plasma.
· PC monitor-capable: Most LCD television displays can also do double-duty as a PC monitor, plugging directly into any PC with a standard PC video cable.
· No burn-in: If you play a lot of video games, watch the stock ticker on MSNBC, or do other things with your display that involve a lot of static content (images that don’t change or move around) on a CRT display, you can end up with those images permanently burned into the phosphors on your screen. Because LCDs use a separate backlight instead of creating their own light with phosphors, they are immune to this problem (plasmas are not, by the way).
· Inherently progressive: Unlike direct-view systems, LCDs don’t display their picture using electron guns scanning lines across a screen. Instead, LCDs use millions of tiny transistors that can be individually controlled by the “brains” inside the display. This means that LCDs can easily handle progressive-scan sources, such as progressive-scan DVD and HDTV.
We learned in school that there are three common states of matter: solid, liquid or gaseous. Solids act the way they do because their molecules always maintain their orientation and stay in the same position with respect to one another. The molecules in liquids are just the opposite: They can change their orientation and move anywhere in the liquid. But there are some substances that can exist in an odd state that is sort of like a liquid and sort of like a solid. When they are in this state, their molecules tend to maintain their orientation, like the molecules in a solid, but also move around to different positions, like the molecules in a liquid. This means that liquid crystals are neither a solid nor a liquid. That's how they ended up with their seemingly contradictory name.
So, do liquid crystals act like solids or liquids or something else? It turns out that liquid crystals are closer to a liquid state than a solid. It takes a fair amount of heat to change a suitable substance from a solid into a liquid crystal, and it only takes a little more heat to turn that same liquid crystal into a real liquid. This explains why liquid crystals are very sensitive to temperature and why they are used to make thermometers and mood rings. It also explains why a laptop computer display may act funny in cold weather or during a hot day at the beach.
Drawbacks of LCD displays
Consider the following problem areas before you buy an LCD system as your primary display in a home theater:
Slightly more expensive for their size: Inch for viewing inch, LCDs tend to be a bit more expensive than plasma flat-panels.
Poor reproduction of blacks: Compared with direct-view tube displays, LCDs do a poor job of reproducing black images. Darker screen images never show up as true black, but rather as various shades of gray, and actions happening in these darker areas are difficult to discern.
Limited viewing angle: Although they are getting better due to some intensive efforts by manufacturers, LCDs typically have a poor viewing angle. If you are not sitting almost directly in front of the screen, you don’t get a good picture.
Limited brightness: Because LCDs use a backlight shining through the liquid crystal, most of the light is absorbed. As a result, the LCD displays have lower contrast and are harder to view in a brightly lit room (the picture appears washed out), compared with plasma TVs. LCD TVs with LED backlights do better in this regard.
SEOUL (Reuters) - Samsung Electronics’ display unit said on Tuesday it will extend production of liquid crystal display (LCD) panels for TVs and monitors, as more people sought home entertainment during the coronavirus pandemic.
Samsung Display’s decision to extend LCD production in South Korea for an unspecified period of time overrides its announcement in March that it would end all production by the end of the year to focus on more advanced technology.
Samsung Display said the length of the extension would depend on profitability considerations and market conditions. It had said in late October that it was considering a “short-term” extension.
Local media outlet IT Chosun reported earlier on Tuesday that production would be extended by a year at the request of Samsung Electronics’ set manufacturing division, citing unnamed tech industry sources.
A spokeswoman for Samsung Display declined to comment on the IT Chosun report.
The stay-at-home trend sparked by the coronavirus pandemic led to a 30% quarter-on-quarter spike in global panel demand in the third quarter of the year amid more TV and notebook demand, according to technology research firm TrendForce.
However, the firm added that the influx of more production capacities from Chinese LCD makers was likely to worsen a supply glut next year.
SAMSUNG LCD panel is in both South Korea and China, but it earlier this year sold a majority stake in its Suzhou LCD production unit to TCL Technology Group Corp’s China Star Optoelectronics Technology unit.
LG Display has changed its CEO in its bid to reorganise its businesses amid declining LCD profits and lackluster OLED display panel sales.
The company, which is the display panel-making affiliate of LG Group, approved the motion to name LG Chem President Jeong Ho-young as its new CEO in an emergency board meeting on Monday, LG Display said in a statement.
Current CEO and Vice Chairman Han Sang-beom had expressed his desire to resign in order to take responsibility for the company's recent profits decline, LG said.
Jeong is expected to officially take over the CEO position in the shareholders meeting in March next year but will become the acting CEO on Tuesday.
The move is highly unusual as it normally makes leadership changes during its group-wide year-end reshuffle.
LG Display had once been a profit darling for the group, but its fortunes have drastically changed since 2018 from intensifying competition in both its traditional LCD business as well as the newer OLED one.
It is losing out to Chinese rival BOE in the LCD market, while its large-sized OLED display panel business has suffered from slower than expected sales from increased competition by Samsung's QLED counterpart.
LG Electronics' TV business saw its operating profit halved in the second quarter from slower than expected OLED TV sales.
In regards to the small-sized LCD and OLED display panels used in smartphones and tablets, Chinese clients are increasingly relying on local suppliers over LG. At the same time, the South Korean tech giant cannot match Samsung's volume and yield rate when it comes to providing display panels for the more profitable mobile OLEDs.
LG Display posted operating losses of 369 billion won in the second quarter of 2019 with revenues of 5.35 trillion won, which was much lower than analysts' expectations.
But the company has increased the production capacity of its OLED factories in China and South Korea, with the goal of moving 10 million large-sized panels by 2022 to decrease unit cost and increase sales.
LG Display has also commenced the restructuring of its LCD business, halting some of its factory lines and lowering production output, and will likely now make even tougher measures under new leadership.
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