Tag: Plasma LCD
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Foreword: The battle for liquid crystal plasma power has been around for a long time
In the contrast between plasma TVs and LCD TVs, power consumption is often a focus of both PKs and one of the factors that many consumers will consider when purchasing flat-panel TVs. In particular, the problem of energy consumption is now attracting more and more attention from all over the world. As a mass consumer product, the power consumption problem of TV is certainly not negligible.
For the average consumer, we usually only know about the rated power consumption indicated in the TV's manual. In fact, this can't really understand the actual power consumption of LCD TVs and plasma TVs. It is not particularly suitable, especially for plasma TVs and LCD TVs with automatic brightness control. The actual power used is often less than the rated rating. Power consumption. For example, the current rated power consumption of the 42-inch LCD TV is about 230W, while the rated power consumption of the 42-inch plasma TV is about 300W. In fact, it is far lower than this value in actual use.
The debate between plasma TV and LCD TV has not stopped
At present, there are two kinds of talks about the power consumption of LCD TVs and plasma TVs. The first type of speech is mainly based on the rated power consumption of the label, indicating that the plasma power consumption is too large, and the 52-inch level reaches 400-500W, as opposed to A generator, the power consumption is not used; the second statement is explained from the principle of plasma, indicating that since the plasma TV adopts the active light display mode, each pixel is equivalent to a small light bulb, then When the dark scene scene is displayed, in fact, some of the pixels of the plasma are directly turned off, instead of relying on the backlight of the bright light like the liquid crystal, so that the power consumption will be greatly reduced, even more than the LCD TV. Power saving.
Plasma LCD, who is more energy efficient?
First of all, we can be sure that in the actual application process, the power consumption of plasma TV is obviously affected by the brightness of the screen. When watching the program, the power consumption of the plasma TV changes at any time, so the actual power consumption of the plasma TV and the LCD TV The actual power consumption cannot be determined by parameters alone.
So who is the power consumption of LCD TV plasma TV? I am here to express my views here, if there are different opinions, you can leave a message below to discuss.
· LCD plasma standby energy consumption is less than 1W
When it comes to power consumption, we start with the standby power of plasma TVs and LCD TVs. In the current flat-panel TV market, we can see that many manufacturers are promoting less than 1W of standby power, which is one of the TV energy-saving measures. So, in fact, what is the power consumption of LCD TVs and plasma TVs?
Recently, I tested the standby power of a 47-inch LCD TV and a 50-inch plasma TV. Because they are all large-size products, if their standby power is below 1W, then for small-size flat-panel TVs. Said that it should be lower than them.
·Test model
·Changhong PT50718 plasma TV
Standby power consumption is less than 1W
·Philips 47PFL5609 LCD TV
The measured standby power is also less than 1W.
Editor's comment: The standby energy consumption of flat-panel TVs is a point of concern in energy consumption requirements. Although there are no clear requirements in China at present, there are related labels in foreign countries, such as the Energy Star that came into effect in November 2008. The 3.0 version of the TV specification for standby power consumption is less than 1W. Although this standard is not mandatory, it still has a high guiding significance in the market.
From the author's test results of two large-size LCD TVs and plasmas, both have reached this requirement, and I believe that with the development of technology, it will take less than four years to reduce the standby energy consumption of flat-panel TVs. Below 0.5W.
Play cable signal status
For standby power consumption, current mainstream LCD TVs and plasma TVs can all maintain a good level. Next, let's take a look at how the energy consumption of LCD TVs changes when playing cable TV programs.
In this article, we also mentioned two arguments about energy consumption: the first type of speech is mainly based on the rated power consumption of the label, indicating that the plasma power consumption is too large, 52 inches to 400-500W, compared to one Generator, power consumption is not used.
The second statement is explained from the principle of plasma, which means that since the plasma TV adopts the active light-emitting display mode, each pixel point is equivalent to a small light bulb, and when the dark scene scene is displayed, the plasma portion is actually Pixels are turned off directly, instead of relying on a bright backlight like a liquid crystal, which reduces power consumption even more than LCD TVs.
After watching the test of playing cable TV programs, I believe that everyone will have some opinions on these two statements.
· Plasma TV broadcast cable TV program energy consumption test
The plasma TV we tested this time is still a 50-inch large flat panel Changhong PT50718. First of all, we can see from the following figure that the rated power consumption of the Changhong PT50718 plasma TV is 380W. Is there such a large size in actual use?
Changhong PT50718 rated power consumption is 380W
Look at the power consumption of cable TV is about 289W
Through actual tests, when watching cable TV programs through Changhong PT50718 plasma TV, its power is as far as the second statement, and it consumes far less than the rated power consumption of 380W, only at 290W. Jumping left and right.
·LCD TV broadcast cable TV program energy consumption test
The 50-inch plasma TV Changhong PT50718 consumes only 290W when watching cable TV programs. What is the LCD TV? First, let's first look at the rated power consumption of the Philips 47PFL5609 LCD TV.
The nameplate shows that the Philips 47PFL5609 has a rated power consumption of 265W.
Look at the power consumption of cable TV is about 227W
In the actual test, the power consumption of the Philips 47PFL5609 is actually beating, and the value jumps around 220W.
Edit Comment: Through the above test, we can see that with the development of technology, the rated power consumption of plasma TV has been reduced, such as Changhong PT50718 plasma TV rated power consumption is only 380W, compared to 50-inch plasma TV 400 two years ago The rated power consumption of -500W has been lowered a lot. In addition, the actual power consumption of the plasma TV varies with the degree of brightness of the screen. In actual daily use, it is difficult to reach the value of the rated power consumption.
It is also incorrect for the plasma camp to constantly attack the power consumption of LCD TVs. Most LCD TVs now have automatic brightness control, so the actual power consumption is the same as that of plasma TVs.
Play the movie "Fame Name" power consumption comparison
After watching the power consumption of watching cable TV, let's take a look at the power consumption of the Philips 47PFL5609 LCD TV and Changhong PT50718 plasma TV. The film selected by the author is "The Name of the Project".
· Changhong PT50718 plasma TV watch the movie "name", the instantaneous power is about 330W
When watching the movie "The Name of the Cast", the instantaneous power is about 330W.
· Philips 47PFL5609 LCD TV when watching "name", the maximum power consumption is about 228W, the minimum is only about 156W
When watching "Fame Name", the maximum power consumption is about 228W, and the minimum is only about 156W.
Through the above comparison, we can once again conclude that the current instantaneous power of plasma TVs and mainstream LCD TVs are changing with the changes of TV screens. Because the size of the two is different, the comparison of power consumption is not particularly accurate. The author also made a more accurate test of the actual power consumption of each film on the 42-inch LCD TV and 42-inch plasma TV. Let's take a look.
Play the same film LCD plasma power consumption PK
The author selected the LCD TV and the plasma TV to be 42-inch products. The TV on the left is plasma, and the TV on the right is LCD. The first line of the meter shows the continuous play time accumulation; the second line shows the instantaneous power consumption; the third line shows the meter power.
Both play the same movie at the same time, measuring the accumulated time, instantaneous power, and power consumption (kW/hour).
The TV on the left is plasma, and the TV on the right is LCD.
Instrument used for testing
·The actual power consumption of playing HD movies
Here, the two 42-inch flat-panel TVs I chose are priced at around 5,000 yuan and belong to the same brand. Of course, if you choose a different TV grade, the final test results may still have some changes.
Through the comparison test of these two products, we can see that the plasma and LCD TVs have similar power consumption when watching the same movie, especially watching dark scenes such as "The Matrix". In the movie, the plasma TV consumes less power.
Written in the end: Through this article we can understand: First, the standby power consumption of almost all flat-panel TVs can be kept below 1W, and the performance is better. Second, in addition to the plasma TV can change with the change of the picture scene, the power consumption of the current mainstream LCD TV can also change with the change of the scene. Third, comparing LCD TVs and plasma TVs of the same size and the same grade, when they watch the same movie, the power consumption is not much different. Most of the time, the plasma TV is slightly higher than the LCD TV, but when playing a movie with more dark scenes. The power consumption of plasma TVs is smaller than that of LCD TVs.
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