A few days ago, a friend asked me: what is the difference between OLED and led? I told him that the materials used are different. Led uses metal materials, while OLED uses organic materials; OLED is more advanced. It can emit light independently without light irradiation, and the contrast is better. The LED used usually needs backlight irradiation to see things
It must be clear that OLED and LED are not a concept. Recently, we must frequently see the term “led”. Although it is only one letter different from OLED, they actually describe completely different things. We all know that the liquid crystal panel emits light through the backlight and produces various colors through the refraction of liquid crystal molecules. The liquid crystal molecules themselves cannot emit light, while the LED only refers to the backlight. OLED itself can emit light, so it does not need a backlight.
OLED is really popular in the past two years and is also popular among consumers. Let me briefly popularize the concepts of OLED and LCD. LCD (liquid crystal display) refers to the “liquid crystal display” technology. LCD TV is what we often call LCD TV. Under the action of electric field, the arrangement of liquid crystal molecules will change, so as to change the transmittance of external light source. Therefore, the unit in the LCD display needs an external light source to obtain brightness. This technology has a relatively long history and is also a very common TV technology.
OLED (organic light emitting diode) can be regarded as a new generation of display technology, and it is also a more competitive display technology in the current TV industry. Through the organic light-emitting diode, when the current passes through, the OLED panel can emit light by itself without the support of “backlight”. Therefore, OLED TV will be much lighter than LCD TV and better than LCD in display performance. The specific comparison between the two will be explained below according to several aspects given by the subject.
Contrast: refers to the contrast between the brightest and darkest areas of the image, which is the main factor affecting the overall image quality. The higher the contrast, the stronger the sense of hierarchy. In terms of the ability to display the darkest color, i.e. black, the LCD screen cannot be controlled for each pixel, so some light will leak when displaying the black picture, and the ultimate pure black cannot be obtained; OLED technology can completely turn off the corresponding sub-pixel and return its brightness to zero. The black in the image is basically close to pure black. Therefore, the dark light scene on the screen is deeper and the corresponding high light scene is more transparent. If the demand for film viewing is high, the picture effect presented by OLED TV will be more natural and realistic.
Response speed: usually refers to the response speed of each pixel to the input signal, that is, the time required for the pixel to turn from dark to light or from light to dark. The shorter the time, the less likely it is to cause motion blur and drag. As LCD TV will have the shadow of the previous picture when switching pictures, residual shadows will be generated. The response speed of OLED is much shorter than that of LCD, and the residual image can not be seen by the naked eye. Therefore, OLED has great advantages in the expressiveness of high-speed dynamic pictures. The OLED screen will be smoother and higher definition no matter watching fierce ball games or blinking game pictures.
Power consumption: the OLED screen does not need backlight, and adopts very thin organic material coating and glass substrate. When there is current passing through, these organic materials will emit light, and there will be no power consumption where there is no need to emit light during picture presentation. The LCD screen needs a backlight, so no matter which area will consume power during display, so the power consumption of OLED is smaller than that of LCD.
Viewing angle: it is divided into horizontal viewing angle and vertical viewing angle. In short, the TV looks best in this angle. The maximum viewing angle of OLED can reach 84 degrees, and the picture is still undistorted even when viewed from a large viewing angle; At present, the maximum viewing angle of the best LCD panel is only 54 degrees, and the viewing effect from the side will be reduced. Therefore, LCD TV with smaller viewing angle has greater restrictions on the viewing position of users.
Seismic resistance: LCD display screen can not be bent because it is equipped with liquid crystal, while OLED screen is a solid-state structure and belongs to non vacuum all solid-state components. The characteristics of material composition make the latter have better seismic performance and not afraid of falling.
Overall, OLED TV has better performance than LCD TV in all aspects, but the price is also relatively high. If you pay great attention to audio-visual experience, it is recommended to choose OLED TV. Now OLED technology is becoming mature, and there are many price friendly products to choose from. However, if the budget is not high and the use requirements are not so high, LCD is an option with high cost performance. You can buy it according to your own needs