Display device having both organic electroluminescent display panel as backlight source and liquid crystal display panel

A display device, comprising:

• a liquid crystal display panel, comprising:
• a color film substrate on which a plurality of color filter blocks of various colors arranged in an array are formed, each of the plurality of color filter blocks presenting a single color;
• an array substrate which is aligned and assembled with the color film substrate, on which array substrate there are formed with thin film transistor switches, pixel electrodes and a common electrode all arranged in an array;
• and
• a liquid crystal layer encapsulated between the color film substrate and the array substrate;
• and
• an organic electroluminescent display panel provided opposite to the liquid crystal display panel and configured to function as a backlight source for the liquid crystal display panel,
• wherein the liquid crystal display panel has a display region defined therein, and comprises a plurality of pixel units arranged in an array and located in the display region, each of the plurality of pixel units comprising a plurality of sub-pixel units;
• each color filter block presenting a single color and located on the color film substrate, and a respective thin film transistor switch, a respective pixel electrode and the common electrode which are provided corresponding to the color filter block and located on the array substrate, as well as liquid crystal molecules provided in a respective portion of the liquid crystal layer between the color filter block and the respective thin film transistor switch, the respective pixel electrode and the common electrode cooperatively define a respective one of the plurality of sub-pixel units, collectively;
• the organic electroluminescent display panel has a light-emitting region defined therein and opposite to the display region, and comprises a plurality of light-emitting units arranged in an array and located in the light-emitting region, each of the plurality of light-emitting units comprising a plurality of light-emitting sub-units;
• and
• wherein an area of each of the plurality of sub-pixel units is smaller than an area of a corresponding one of the plurality of light-emitting sub-units at least partially overlapping therewith;
• wherein the plurality of the pixel units and the plurality of light-emitting units are provided in one-to-one correspondence with each other, and each of the plurality of the pixel units has an area identical to that of each of the plurality of light-emitting units;
• the area of each of the plurality of sub-pixel units is equal to 1/2 of the area of each of the plurality of light-emitting sub units;
• and
• each of the plurality of light-emitting sub units is provided corresponding to two corresponding sub-pixel units of the plurality of sub-pixel units;
• wherein in each of the plurality of pixel units, the plurality of sub-pixel units comprise:
• a first sub-pixel unit, a second sub-pixel unit, a third sub-pixel unit and a fourth sub-pixel unit;
• wherein in each of the plurality of light-emitting units, the plurality of light-emitting sub-units comprise:
• a first light-emitting sub-unit configured to emit a first light, and a second light-emitting sub-unit configured to emit a second light;
• the first light-emitting sub-unit is arranged corresponding to the first sub-pixel unit and the second sub pixel unit to transmit the first light through the first sub pixel unit and the second sub-pixel unit respectively, and then to display a first color and a second color respectively;
• the second light-emitting sub unit is arranged corresponding to the third sub pixel unit and the fourth sub-pixel unit to transmit the second light through the third sub pixel unit and the fourth sub-pixel unit respectively, and then to display a third color and a fourth color respectively.