Display panel redundancy schemes
Display panel redundancy schemes and methods of operation are described. In an embodiment, and display panel includes an array of drivers (e.g. microdrivers), each of which including multiple portions to independently receive control and pixel bits. In an embodiment, each driver portion is to control a group of redundant emission elements.
1. A display panel comprising:
a first driver arranged in a first row of drivers;
a second driver arranged in a second row of drivers;
wherein each of the first and second drivers includes a first portion and a second portion, and the first and second portions including independent logic to independently receive both control and pixel bits and select only the first portion of the first driver or the second portion of the second driver to be active;
a plurality of pixels; and
wherein the second portion of the first driver is to drive a first group of LEDs including multiple different emission colors in the plurality of pixels, and the first portion of the second driver is to drive a redundant group of LEDs with the same multiple different emission colors as the first group of LEDs and in the same plurality of pixels.
2. The display panel of claim 1 , wherein the first group of LEDs is in a first row, and the redundant group of LEDs is arranged in a second row parallel with the first row.
3. The display panel of claim 1 , wherein the first group of LEDs and the redundant group of LEDs are staggered.
4. The display panel of claim 1 , wherein the first driver is a first driver chip and the second driver is a second driver chip.
5. The display panel of claim 1 , further comprising a common cathode line formed on top of and in electrical connection with the plurality of LEDs.
6. The display panel of claim 1 , further comprising:
a first data register in the first portion of the first driver to store first control bits and first pixel bits from a first data input and a first data clock input; and
a second data register in the second portion of the second driver to store second control bits and second pixel bits from a second data input and a second data clock input.
7. The display panel of claim 6 , wherein:
the first data input and the second data input are connected to a first column driver chip;
the first data clock input is connected to a first row driver chip; and
the second data clock input is connected to a second row driver chip.
8. The display panel of claim 7 , further comprising a first emission counter reset input for the first driver to provide an asynchronous reset signal to emission control logic for the first and second portions of the first driver, and a second emission counter reset input for the second driver provide an asynchronous reset signal to emission control logic for the first and second portions of the second driver.
9. The display panel of claim 1
wherein the first driver and the second driver are part of an array of drivers arranged in rows and columns;
wherein the plurality of pixels is arranged in a display row of a plurality of display rows;
wherein each driver includes a first portion and a second portion, the second portion to control a corresponding display row adjacent the second portion, and the first portion to control a corresponding display row adjacent the first portion; and
a plurality of rows of emission clock lines, wherein each row of emission clock lines is to control a row of first driver portions and a row of second driver portions on opposite sides of a corresponding display row.
10. The display panel of claim 9 , further comprising:
a plurality of rows of data clock lines; and
a plurality of rows of emission counter reset lines;
wherein the data clock and the emission counter reset lines are to program control bits of adjacent rows of drivers, and the emission clock line and the emission counter reset line are to control emission timing.
11. The display panel of claim 10 , wherein each data clock line for each corresponding display row is connected to a first portion of a driver above the corresponding display row and a second portion of a driver under the corresponding display row.
12. The display panel of claim 10 , wherein each emission counter reset row controls a single row of drivers.
13. The display panel of claim 9 , further comprising:
an emission clock routing path running between second portions of laterally adjacent drivers in the row of drivers.
14. The display panel of claim 9 , further comprising a column of row drivers, wherein each row of emission clock lines runs from a single row driver to a second portion of a row driver and a first portion of a row driver on opposite sides of a corresponding display row.
15. The display panel of claim 1 , wherein each driver in the first row of drivers is configured so the first portion and the second portion are inactive.
16. The display panel of claim 15 , wherein each driver in second row of drivers is configured so the first portion and the second portion are active.
17. The display panel of claim 1 , wherein each driver in the first row of drivers is configured so the second portion is active.
18. The display panel of claim 17 , wherein each driver in the second row of drivers is configured so the first portion is active.