What is the difference between plasma TV and LCD TV

The full name of Plasma TV is PlasmaDisplayPanel, which is called Plasma TV in Chinese. It is a device that injects a mixed gas between two ultra-thin glass plates and applies voltage to use phosphor to emit light for imaging. Compared with CRT display, it has the characteristics of high resolution, large screen, ultra-thin, rich and bright colors. Compared with LCD, it has the characteristics of high brightness, high contrast, large viewing angle, bright colors and rich interfaces.

Plasma display technology can be divided into two categories: direct-current PDP with electrodes in direct contact with gas and alternating-current PDP with dielectric layer covered on the electrodes according to their working methods. There are three main types of color PDPs researched and developed: single substrate type (also known as surface discharge type) AC PDP, dual type (also known as opposite discharge type) AC PDP and pulse storage DC PDP.

1. Good color reproduction ability and natural display color;

2. The dynamic range of dark field is large, and the image has a rich sense of hierarchy;

3. Small image tailing time and high dynamic clarity;

4. Large viewing angle and good brightness uniformity;

5. It is easy to realize large screen.

1. The screen size is small, and there is no small size model;

2. Larger volume, larger weight, and higher power consumption;

3. Due to the high temperature discharge, the screen burning phenomenon is easy to occur;

4. The screen brightness is low and the graininess is obvious;

5. The heat is large and the noise is obvious.

The panel of the plasma screen is mainly composed of two parts, one is the front panel process (FrontProcess) close to the user side, which includes the glass substrate (GlassSubstrate), transparent electrode (TransparentElectrode), Bus electrode (Bus-Electrode), transparent Dielectric layer (DielectricLayer), MgO film (MgOThinFilm). The other is the Rear Process, which includes a phosphor layer (PhosphorLayer), a partition wall (BarrierRib), a transparent dielectric layer (DielectricLayer), an addressing electrode (AddressElectrode), and a glass substrate (GlassSubstrate) . Therefore, the phosphorescent quality responsible for luminescence is not on the side close to the user, but on the inner part. Since the control circuit must be sandwiched between the front panel process and the rear panel process, the front and rear panels need to be accurately aligned and matched with the control circuit during the panel assembly process to ensure that there is no problem in light emission. In this step, you will find that the LCD panel needs a backlight module, but the PDP does not, because it is self-luminous. Only the panel is not enough, because it also needs a high-voltage drive circuit and a control circuit with different functions to meet the basic needs of the screen. If you buy a plasma TV, most of them will be equipped with a dedicated TV box, because whether it is video input or Tuner, most of them are designed in the TV box, so a complete plasma TV includes a plasma screen and a TV box.

Liquid crystal display (LCD) is abbreviated as LCD (Liquid Crystal Display). It uses a substance between solid and liquid, an organic compound with regular molecular arrangement, which is a transparent liquid state when heated, and a turbid solid state of crystalline particles after cooling.

The arrangement of liquid crystal molecules used in liquid crystal displays is similar to that of thin matchsticks, which are called NemaTIc liquid crystals. The liquid crystal displays manufactured using such liquid crystals are also called LCDs (LiquidCrystalDisplay). In LCD TVs, a voltage is added to the liquid crystal between the two glasses, and the screen is reproduced through molecular arrangement changes and zigzag changes. The screen is made by the collision of electron groups to create the screen and form the screen through the perspective reflection of external light.

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