Chiplet display with multiple passive-matrix controllers
View Patent ↗A display device includes a substrate having a display area; row electrodes formed over the substrate in the display area extending in a row direction and column electrodes formed over the substrate in the display area extending in a column direction different from the row direction, the row and column electrodes overlapping to form pixels; wherein the pixels are divided into two or more separate pixel groups, each pixel group having group row electrodes and separate group column electrodes; two or more spaced column driver chiplets located in the display area, each column driver chiplet uniquely connected to a different pixel group wherein in at least one of the column driver chiplets is located between pixel groups, and the two or more spaced column driver chiplets adapted to drive the group column electrodes of the one pixel group; and one or more row driver(s) connected to the row electrodes.
1. A display device, comprising:
a) a substrate having a display area;
b) an adhesion layer formed over the substrate;
c) one or more column driver chiplets located over the substrate and buried in the adhesion layer;
d) one or more pairs of row driver chiplets located over the substrate and buried in the adhesion layer;
e) a plurality of row electrodes formed over the adhesion layer in the display area extending in a row direction and a plurality of column electrodes formed over the adhesion layer in the display area extending in a column direction different from the row direction, the row and column electrodes overlapping to form pixels;
f) wherein the pixels are divided into two or more separate pixel groups, each pixel group having group row electrodes and separate group column electrodes,
wherein each of the one or more column driver chiplets is located between two different pixel groups and is associated with one of the two different pixel groups, and each of the one or more column driver chiplets is adapted to drive the group column electrodes of an associated pixel group and wherein the column driver chiplets and the pairs of row driver chiplets cooperatively drive the column and row electrodes, respectively, to activate the pixels, and wherein each of the plurality of row electrodes is driven in parallel by one of the pairs of row driver chiplets and wherein the display device is in a top-emitter configuration.
2. The display device of claim 1 , wherein each of the one or more pairs of row driver chiplets further include a reset circuit responsive to a reset signal to enable a single row and a shifting circuit that receives a row select signal to progressively and uniquely enable a single row.
3. The display device of claim 1 , wherein each of the one or more column driver chiplets comprises a plurality of data value registers and a plurality of column drivers wherein each or the plurality of column drivers drives a column electrode with a current corresponding to a data value stored in one of the plurality of data value registers.