Lamp of illumination of a matrix

The lamp is made of illumination of a matrix of the laptop is 15.6 inch. If you have a broken matrix you can make from the illumination of such lamp. The backlight is powered from 12 volts, is connected 3 battery 18650 in parallel through step-up Converter got 12 volts. But it's not necessary, you can connect the batteries in series and get 12 volts. How to highlight search for articles on the Internet, because all are different.
The backlight is rotated vertically 180 degrees. Will not loose