What is the difference between QVGA display and TFT display?
Author:Zhang Huifa Time:2021-10-14 16:51 Browse(306)
QVGA is Q, or quarter. As the name suggests, QVGA is one fourth of the size of VGA. The resolution of the output on the LCD screen is 240 × 320 pixels. It should be noted that it is wrong for some media to regard QVGA screen as the same material as TFT, TFD and other LCDs. The statement of QVGA screen is common in some Japanese mobile phones, and most of the smart phone screens using Microsoft PPC operating system are 320 × 240 pixel QVGA screen.
QVGA is Q, or quarter. As the name suggests, QVGA is one fourth of the size of VGA.
that is, the resolution of the output on the LCD screen is 240 × 320 pixels.

What is the difference between QVGA display and TFT display?

it should be noted that it is wrong for some media to regard QVGA screen as the same material as TFT, TFD and other LCDs.
the statement of QVGA screen is common in some Japanese mobile phones, and most of the smart phone screens using Microsoft PPC operating system are 320 pixels × 240 pixel QVGA screen.


TFT (thin film transistor) screen, which is also commonly used in high-end color screen mobile phones, is divided into 65536 colors and 260000 colors, 16 million colors, and its display effect is very excellent.


the so-called QVGA LCD technology.
is that the output resolution on the LCD screen is 240 × The resolution has nothing to do with the size of the screen itself.
for example,
if the 2.1-inch LCD screen can display 240 × 320 resolution image is called "QVGA 2.1 inch LCD screen"; If the 3.8-inch LCD screen can display 240 × The image of 320 is called "QVGA 3.8 inch LCD". Although the above two cases have the same resolution, due to different sizes, the actual visual effect is also different. Generally speaking, a picture with a small screen will be smaller, It means that each LCD pixel on the LCD is driven by a thin film transistor integrated behind it.
this paper introduces the design of a thin film transistorTFT belongs to the active matrix liquid crystal display.
it is one of the best LCD color display devices, and its effect is close to that of CRT, Nowadays, TFT is the mainstream display device on laptops and desktops.
every pixel of TFT is controlled by the integrated TFT.
it is an active pixel.
therefore.
not only the speed can be greatly improved, but also the contrast and brightness can be greatly improved, At the same time, the resolution has also reached a very high level.


I have made it very clear: "TFT belongs to active matrix liquid crystal display.
is one of the best LCD color display devices at present, and its effect is close to that of CRT display.
.
in this paper, we introduce the principle of TFT color display
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