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- Aug 09, 2018 -

LCDs require backlight support during display, and light is transmitted through two layers of glass and substrate and various optical films, alignment films, and color filters to produce polarized light, which is inevitable in brightness and color. 

The TFT we are talking about is the abbreviation of Thin-Film Transistor. In the LCD, the TFT deposits a film on the glass substrate as a channel region, and improves the image quality through thin film transistor technology.

The TFT is configured with a semiconductor switching device for each pixel, and each pixel can be directly controlled by a dot pulse. 

And because each node is relatively independent, continuous control is also possible. 

The TFT can control each independent pixel on the screen, so that the screen information can be displayed with high speed, high brightness and high contrast. The reaction time of the general TFT is about 80 milliseconds, and the viewing angle can reach about 130 degrees. 

The application is more extensive.

The advantage of TFT is that it can achieve visual satisfaction in terms of color saturation and reduction, and the speed of reaction when swiping is also remarkable. 

But its shortcoming is also a fatal phenomenon, and the power consumption is relatively high compared to other screens.

Speaking of OLED is not that complicated. 

OLED is the abbreviation of Organic Light-Emitting Diode. Unlike LCD, OLED has self-luminous characteristics, wide viewing angle, high contrast, low power consumption, high reaction rate, full color, and simple process. 


According to the driving method, OLED can be divided into passive OLED (PMOLED) and active OLED (AMOLED).

AMOLED uses a Pentile pixel arrangement, which results in a stronger graininess at the same resolution. 

And because of the loss of backlight support, the brightness of the AMOLED screen can only be supported by pixels that can self-illuminate, so the performance of the AMOLED screen is generally in an outdoor environment.

At present, AMOLED screens have been developed to three generations: AMOLED, Super AMOLED, and Super AMOLED Plus. 

Compared with the traditional AMOLED, the Super AMOLED eliminates the architectural design of the touch sensing layer and the display layer, and is directly a native touch panel, which can bring more sensitive operation and a response speed of one thousandth of other materials. 

In addition, the absence of a glass cover also gives a better display under the sun, and the color expression is more beautiful. 

It can be said to make up for all the shortcomings of the previous two screen materials.

Super AMOLED Plus further improves the way of Pentile pixel arrangement in the previous Super AMOLED screen. The RGB arrangement is more delicate, and solves the problem of large display particles that are criticized by the majority of users. 

After the HD Super AMOLED, HD Super AMOLED PLUS, Full HD Super AMOLED, and Quarter HD Super AMOLED, in addition to the improved resolution, the display effect is also developing in a more refined direction.

Simply put, TFT, IPS are all screen display technologies, which are still LCD screens in the final analysis; various AMOLED screens are branches of OLEDs. 

Whether it is LCD or OLED, the display effect, energy consumption, etc. are improved with the improvement of technology. As long as the concept is not confused, we can effectively place the slogans of those bells and whistles when buying the machine.