When you have some LCD panel from old laptop or monitor or TV, there are lot of interesting projects you can try to do. However lot of projects are limited on usability of panel and it’s condition. Anyway last week I got 2 broken LCD panels from laptop and I was too excited to do something interesting with it. Since both panels are broken I’m going to make good old Illuminated Picture Frame or Backlit Picture Frame withing those. So if you got working LCD panel you can try some other projects like, Smart Mirror or Secret Monitor and projects like those.
So my plan was remove LCD or TFT panel from it’s back panel and power up that backlit panel alone and make picture frame withing it.
My LCD panels are comes from Dell inspiron series laptops, so it’s contains LED back lit panel which is suitable for my project. Unless your panel is too old or too good, model number isn’t going to be problem. If your panel too old it will contain florescent bulbs to illuminate back lit panel instead LED’s on newer panels. It won’t be problem but those will consume more energy than LED panels and unlike LED’s you will need special driving circuit to use it. If your panel is too good, if it’s something like OLED or AMOLED panels, you won’t be able to find separable backlit panal and you have to go for another project to try.
If you got separate your panel from it’s housing or from whatever it’s source like these you are good to go.
First step is separate back lit panel from whole unit. It’s depend on type of panel and usually panel is stick together by tapes or ticks. In this panel, it’s easily separated after all tapes removed.
After separate you can see there is some connectors coming from back lit panel witch is used to power up panel. Usually those connectors connected to LCD control board by somehow. You should be carefully separate those from each other.
Next thing is find paths and power up back lit panel. In my case there is 5 lines comes from panel and I assumed widest line for V 0 ( Ground ) and others are different set of led +V Lines. Anyway in this step I have connected this to the power supply and tried to power up panel by starting with 3V but couldn’t get anything up to 19V. So I deiced to break through panel and see what it’s made of.
After break through I found one LED strip with 3 set of 9 LED series, which is total 27 Led’s on the line. And also I found out I need 27V (3V * 9LED) for the power up this strip in rough estimation and unfortunately it’s turns out I don’t have the right equipments to make enough voltage to run this panel.
So for now I’m stuck with this step but I’m going to find solution for that pretty soon. So if you have same problem and couldn’t power up panel, remember that dissemble back lit panel will almost screwed the panel. It will be not same as before it was.