Digital display system including pixel-driving circuit formed on interposer
A pixel-driving circuit for driving a digital display device, the pixel-driving circuit formed on an interposer that is electrically connected to a display substrate through a plurality of bumps. The pixel-driving circuit comprises a row terminal connected to a row bump connected to a row line of a row-driving circuit among the plurality of bumps, a column terminal connected to a column bump connected to a column line of a column-driving circuit among the plurality of bumps, a common element that shares at least one of the row terminal or the column terminal for L (Lis a positive integer greater than or equal to 2) display pixels formed on the interposer, and L pixel individual elements connected to the common element and driving a plurality of light emitters included in each of the L display pixels.
1 . A pixel-driving circuit for driving a digital display device, the pixel-driving circuit formed on an interposer that is electrically connected to a display substrate through a plurality of bumps, wherein the pixel-driving circuit comprises:
a row terminal connected to a row bump connected to a row line of a row-driving circuit among the plurality of bumps;
a column terminal connected to a column bump connected to a column line of a column-driving circuit among the plurality of bumps;
a common element that shares at least one of the row terminal or the column terminal for L (L is a positive integer greater than or equal to 2) display pixels formed on the interposer; and
L pixel individual elements connected to the common element and driving a plurality of light emitters included in each of the L display pixels,
wherein each of the L pixel individual elements comprises a pixel-embedded memory for storing video data to illuminate the L display pixels,
wherein the common element comprises a power generator for generating power for the pixel-driving circuit; and at least one of a column signal distributor for distributing a signal input through the column terminal to the L pixel individual elements or a row signal distributor for distributing a signal input through the row terminal to the L pixel individual elements, and
wherein each of the L pixel individual elements comprises a pixel-embedded memory for storing video data input through the column signal distributor.
2 . The pixel-driving circuit according to claim 1 , wherein the interposer is one of a film interposer, a glass interposer, or a silicon interposer.
3 . The pixel-driving circuit according to claim 1 , further comprising at least one sensor disposed on a sensor area formed on the interposer.
4 . The pixel-driving circuit according to claim 1 , wherein sub-pixel areas where a plurality of light emitters of each of the L display pixels are disposed are formed at a corner or outside of a display pixel so that the sub-pixel areas are adjacent to each other.
5 . A digital display device, comprising:
M×N display pixels arranged in M (M is a positive integer) rows and N (N is a positive integer) columns; and
a plurality of pixel-driving circuits for driving the display pixels, wherein the M×N display pixels are divided into a plurality of macro pixels comprising m×n (m is a positive integer less than M, n is a positive integer less than N) display pixels;
each of the macro pixels is grouped with each of the corresponding pixel-driving circuits to form a plurality of groups, and the groups are formed on a plurality of interposers that are electrically connected to a substrate through a plurality of bumps; and
each of the pixel-driving circuits is connected to at least one corresponding row line and at least one corresponding column line, and a signal input through at least one line of the row and column lines is distributed to the m×n display pixels within a macro pixel grouped into the same group,
wherein each pixel-driving circuit comprises a pixel-embedded memory for storing video data to illuminate a m×n display pixels in a corresponding macro pixel,
wherein each of the pixel-driving circuits comprises a common element that shares m×n display pixels within a macro pixel grouped into the same group and at least one line of the row and column lines; and m×n pixel individual elements for driving a plurality of light emitters comprised in each of the m×n display pixels within the macro pixel connected to the common element and grouped into the same group, and
wherein a number of the row and column lines shared with the m×n display pixels is determined based on at least one of a fill factor and an application type of a pixel-driving circuit, and the fill factor is determined based on size design conditions of a pixel area of the display substrate and a sub-pixel area where the light emitters are disposed.
6 . The digital display device according to claim 5 , wherein the application type of the pixel-driving circuit is divided into a large-area display, a monitor display, and a mobile display, and
the fill factor is determined to have a small value in an order of a large-area display, a monitor display, and a mobile display.
7 . The digital display device according to claim 5 , wherein the interposer is any one of a film interposer, a glass interposer, and a silicon interposer.
8 . The digital display device according to claim 5 , wherein each of the pixel-driving circuits further comprises at least one sensor disposed on a sensor area formed on a corresponding interposer.
9 . The digital display device according to claim 5 , wherein each of the display pixels is disposed on a pixel area formed on a corresponding interposer;
the pixel area comprises sub-pixel areas where a plurality of light emitters are disposed and a non-active area excluding the sub-pixel areas; and
each of the macro pixels comprises a pixel-driving circuit area where a pixel-driving circuit is disposed, and at least a portion of the pixel-driving circuit area overlaps a plurality of non-active areas.
10 . The digital display device according to claim 9 , wherein the sub-pixel areas are formed at a corner or outside of a display pixel so that the sub-pixel areas are adjacent to each other.
11 . The digital display device according to claim 5 , wherein each of the m×n pixel individual elements comprises the pixel-embedded memory for storing the video data input through the column signal distributor; and
a pixel driver for controlling driving of the light emitters based on the video data and a driving signal input through the row signal distributor.