A liquid crystal display device and a forming method of the electrode plate are disclosed. The forming method of the electrode plate includes providing one or more bottom plane electrodes, one or more conductive layers and a dielectric layer, floating the bottom plane electrodes, electrically connecting the conductive layers and an electrode of a thin film transistor, positioning the dielectric layer between the bottom plane electrodes and the conductive layers, utilizing the conductive layers, the dielectric layer and the bottom plane electrodes to form a coupling capacitor, and adjusting the capacitance of the coupling capacitor to control the voltage on the bottom plane electrodes. Therefore, the liquid crystal display device makes every sub-pixel have a predetermined voltage-transmittance characteristic curve by controlling the voltage on the bottom plane electrodes.
A light source for a backlight unit is disclosed. The light source includes a plurality of light emitting diode modules arranged in a manner corresponding to an array, in which each of the light emitting diode modules includes a plurality of light emitting diodes. The array includes a plurality of columns and rows. Preferably, the light emitting diodes of the light emitting diode module of any two adjacent columns are arranged in a different manner, and the light emitting diodes of the light emitting diode module of any two adjacent rows are arranged in a different manner.