Chiplet display device with serial control

A digital display apparatus, comprising:

• (a) a display substrate having a display area on a process side of the display substrate;
• (b) an array of pixels formed on the display substrate process side in the display area, each pixel including a first electrode, one or more layers of light-emitting material located over the first electrode, and a second electrode located over the one or more layers of light-emitting material, wherein the pixels emit light in response to a current provided through the first and second electrodes;
• (c) a plurality of chiplets located on the process side of the display substrate in the display area beneath the pixels, each chiplet including a chiplet substrate separate and distinct from the display substrate, an electrode connection pad, and a signal connection pad formed over the chiplet substrate, the electrode connection pad connected to one of the first or second electrodes and wherein each chiplet includes one or more pixel circuits formed in the chiplet and electrically connected to the corresponding electrode connection pad and the corresponding signal connection pad where each chiplet controls a plurality of pixels;
• (d) means for providing a serial digital image signal including one or more digital luminance values to the signal connection pad(s) of the chiplets;
• and
• (e) wherein each pixel circuit includes a digital luminance value converter circuit for converting at least one digital luminance value to a continuously valued analog pixel-driving signal that controls the luminance of the pixel which is directly connected to the at least one electrode connector and further includes one or more store-and-forward circuits having an input and an output.