1
00:00:00,100 --> 00:00:03,533
In this class, we talk about backlight power supply chips,
2
00:00:03,600 --> 00:00:05,633
which are also called backlight chips
3
00:00:06,266 --> 00:00:09,966
The backlight chip provides a power supply of more than 15 V
4
00:00:10,000 --> 00:00:13,066
for the backlight group of the LCD backlight screen
5
00:00:13,800 --> 00:00:17,700
It lights up the backlight to provide a light source to the display,
6
00:00:18,366 --> 00:00:21,933
and at the same time it changes the brightness of the display
7
00:00:21,933 --> 00:00:24,033
according to changes in the environment
8
00:00:24,200 --> 00:00:24,966
For example,
9
00:00:24,966 --> 00:00:27,600
the one framed in the left picture is a backlight chip
10
00:00:28,266 --> 00:00:32,600
The picture shows an inductor, a backlight chip, a diode
11
00:00:34,200 --> 00:00:37,866
The location characteristics of the backlight chip in the mainboard
12
00:00:38,233 --> 00:00:41,733
It is a small chip plus a large inductor, plus a diode,
13
00:00:41,866 --> 00:00:43,700
we call it a three-piece set
14
00:00:44,433 --> 00:00:48,133
When we see that there is a diode, an inductor, a small chip,
15
00:00:48,466 --> 00:00:50,366
we know that the chip is the backlight chip
16
00:00:51,133 --> 00:00:55,266
This picture shows a backlight power supply chip on the mainboard of the mobile phone
17
00:00:55,700 --> 00:00:59,300
This is a diode, this is an energy storage inductor
18
00:00:59,566 --> 00:01:03,833
The surface of the backlight chip is generally printed with codes starting with
19
00:01:03,833 --> 00:01:12,800
D5, D6, D7, D8, D9, AL62, or AL65, etc.
20
00:01:12,933 --> 00:01:15,433
These are the codes of common backlight chips
21
00:01:16,733 --> 00:01:19,900
For example, this is a code starting with D8,
22
00:01:20,066 --> 00:01:22,166
this is a code starting with D9,
23
00:01:22,433 --> 00:01:25,133
this is a code starting with AL65
24
00:01:25,566 --> 00:01:27,533
Okay, that's all for this lesson
