Organic light emitting diodes and CSTN can be easily distinguished from each other in screen color. Because the organic light-emitting diode is a kind of self-luminous material without background light source, its color is uniform and bright, which is close to the original effect. However, CSTN is worse than organic light emitting diodes in color gradation and light transmittance. When displaying a pure black picture, CSTN still emits a very slight background light, which makes the whole color appear asymmetric, which is also a typical performance of CSTN. The CSTN color screen, which is flooded in the market, is far less bright in color and brightness than the organic light-emitting diode screen. Many users of CSTN screen products feedback that the machine can't see the content clearly in the sun, and there is a tailing phenomenon in playing moving pictures.
2. The difference between a wide perspective and a limited perspective.
The viewing angle of organic light-emitting diodes is very large, which can reach 170. No matter at any angle, we can clearly see the fonts and colors on the display screen. At the same time, organic light-emitting diodes can also see the contents displayed on the screen in the sun. However, CSTN can't achieve this effect. Its viewing angle is far less than that of organic light-emitting diodes, and it can only see the colors inside from the front of the screen. From other angles, CSTN cannot clearly display the color of the screen, and the screen will darken in the sun. From another perspective, we can see that the viewing angle of CSTN screen is very narrow. From the perspective of sensory comparison, the clarity and sharpness of OLED screen are several times higher than CSTN. Compared with color contrast and saturation, organic light-emitting diodes show the characteristics of bright colors and vivid pictures, while CSTN screens are dim, dull and dull, which is the biggest difference between them and the easiest to identify. Let's take a look at the comparison pictures, as shown in figure 1 and figure 2.
3. Power effect
Organic light-emitting diodes (OLEDs) have been considered as the mainstream display technology of the next generation because of their superior performance. It has the advantages of thinness, high definition, fast refresh rate, low energy consumption, low temperature resistance, excellent seismic performance, low potential manufacturing cost, flexibility and environmental protection design. During the playing time of the machine, MP3 with organic light-emitting diode screen is very energy-saving. The OLED screen is made of very thin organic material coating and glass substrate, and the current automatically emits light, which not only saves electricity, but also makes the screen thinner. The machine with CSTN screen belongs to reflective LCD.
4. Price Grid
In the current international market, the price of an OLED screen is about 13 ~ 14, while the price of a CSTN screen is about 5 ~ 6. In terms of price, it may be difficult for consumers to recognize the characteristics of the product, but it is necessary to remind consumers that if the same MP3 is equipped with an organic light-emitting diode screen, if the price difference is around 100 yuan, it is entirely possible that the merchant is making false propaganda.