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The difference between LCD and OLED screens

  LCD liquid crystal display For (Liquid Crystal Display) is a kind of digital clock and many portable computers Display types.

  LCD display uses two pieces of polarized material, between them is a liquid crystal solution. When current passes through the liquid, the crystals are rearranged so that light cannot pass through them. Therefore, each crystal is like a shutter, allowing light to pass through and blocking it.

  Liquid crystal display (LCD) At present, science and technology information products are developing toward the goal of being light, thin, short, and small. Of course, display products with a long history in computer peripherals are no exception. With the ease of carrying and handling as the prerequisite, traditional display methods such as CRT video tube displays and LED display panels are subject to factors such as excessive volume or huge power consumption, and cannot meet the actual needs of users.

  The development of liquid crystal display technology is in line with the current trend of information products. Whether it is a right-angle display, low power consumption, small size, or zero radiation, it can allow users to enjoy the best visual environment.


  Organic Light Emitting Diode [OLED(Organic Light

  -Emitting Diode)], also known as organic electro-laser display

  shows, organic light-emitting semiconductor, refers to organic semiconductor materials

  and luminescent materials are driven by an electric field through carrier injection

  and recombination leads to the phenomenon of luminescence.

  Generally speaking, OLEDs can be divided into two types according to light-emitting materials: small molecule OLEDs and polymer OLEDs (also known as PLEDs). OLED is a device that uses a multilayer organic thin-film structure to generate electroluminescence. It is easy to manufacture and only requires a low driving voltage. These main features make OLED very prominent in meeting the application of flat-panel displays.

  The OLED display is lighter and thinner than LCD, has high brightness, low power consumption, fast response, high definition, good flexibility, and high luminous efficiency, which can meet the new demands of consumers for display technology. More and more display manufacturers around the world have invested in research and development, which has greatly promoted the industrialization process of OLED.

  LCD disadvantages

  Since the LCD relies on the entire backlight layer to emit light, the backlight easily leaks from the gap between the screen and the frame (light leakage), and the liquid crystal layer cannot be completely closed. When the LCD displays black, part of the light will pass through the color layer, so The display black of the LCD presents a grayish-black, and the OLED can achieve a pure black effect by turning off the pixels in the black area. The color contrast of LCD is not as high as that of OLED.

  LCD is much thicker than OLED due to the backlight layer and liquid crystal layer, and it cannot be bent greatly. This is one of the reasons why most mobile phone manufacturers choose OLED screens.

  The LCD screen emits light by the backlight, so no matter which area is required to be displayed when it is displayed, it consumes electricity. The OLED has self-luminous characteristics, the luminescent material does not emit light when displaying black, and does not need to be driven, so the OLED screen is more power-efficient.

  The conversion of the luminous color of the backlight module of the LCD requires the conversion of RGB sub-pixels, while the OLED is an organic material that emits light, and the change speed is much faster. Therefore, the response time of LCD is inherently inferior to that of OLED. In many cases, we feel that OLED is more convenient.

  LED is a light source screen, the peak spectrum of the light source is this short-wave blue light (450 nanometers), the longer the viewing time, the greater the damage to human eyes. The wavelength of blue light produced by OLED screens is between 460-480 nanometers. According to the physical principle that the shorter the wavelength, the higher the energy, OLED screens produce less energy than LCD screens, so blue light is less harmful to human eyes...

  OLED disadvantages

  Although OLED has fewer shortcomings, it is indeed the most deadly. Compared with the inorganic materials of LCD, OLED's organic materials age much faster and have a shorter service life.

  Since each pixel of OLED is self-luminous, unlike LCD, the working time of each pixel of OLED is different. If a pixel takes a long time to display blue, then its blue attenuation will be more than There are many other pixels. When the blue is displayed in the future, the blue of this pixel will be lighter than the others, and the same red and green are the same. Therefore, a phenomenon that is very easy to occur in OLED is screen burn-in.

  The control voltage that OLED cannot use to adjust the brightness requires constant switching, and the switching is too high for a certain number of times to be invisible to the naked eye. When the screen is turned off for a long time under low brightness, the naked eye will find that the screen is turned on and off. At this time, some people will feel obvious discomfort.

  Due to the different arrangement of OLED screen pixels, OLED is not as clear as LCD at the same resolution.

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