US 2022/0028337 A1 · DISPLAY DEVICE WITH FEEDBACK VIA SERIAL CONNECTIONS BETWEEN DISTRIBUTED DRIVER CIRCUITS

Abstract

Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of zone integrated circuits that are distributed in the display area. The zone integrated circuits may comprise integrated LED and driver circuits and may include sensor circuits. The zone integrated circuits are arranged in groups that are coupled to each other and to the control circuit in a serial communication chain via serial communication lines. The control circuit provides control signals that control the driver circuits to drive the LED zones and may provide commands to request readback data from the zone integrated circuits. Responsive to the commands, the zone integrated circuits output readback data to the control circuit via the serial communication chain.

Claims20

Dependent claims

A driver circuit for a display device comprising:

control logic to operate in an operational mode during which the control logic obtains a driver control signal and controls a driver current to an LED zone based on the driver control signal;
an LED driving output pin to drive the driver current during the operational mode;
and
a data input pin to receive commands or data from a previous driver circuit in a serial communication chain during the operational mode;
a data output pin to output readback data to a next driver circuit in the serial communication chain during the operational mode responsive to the commands including a readback command for the driver circuit, the readback data propagated through the serial communication chain back to a control circuit;
and
a ground pin to provide a path to ground.

4 more elements

A zone integrated circuit for a display device comprising:

one or more LEDs of an LED zone;
a driver circuit stacked under the one or more LEDs on a substrate in an integrated package, the driver circuit comprising:
control logic to operate in an operational mode during which the control logic obtains a driver control signal and controls a driver current to an LED zone based on the driver control signal;
an LED driving output pin to drive the driver current during the operational mode;
a data input pin to receive commands or data from a previous driver circuit in a serial communication chain during the operational mode;
a data output pin to output readback data to a next driver circuit in the serial communication chain during the operational mode responsive to the commands including a readback command for the driver circuit, the readback data propagated through the serial communication chain back to a control circuit;
and
a ground pin to provide a path to ground.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/498,672Filed 11 Oct 2021

Priority

22 May 2020

Published

27 Jan 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification28 codes

G01K 1/026
Means for indicating or recording specially adapted for thermometers: arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G01J 1/44
Using electric radiation detectors: electric circuits
G01K 13/00
Thermometers specially adapted for specific purposes

Family

Application63/029,389Us provisional application · filed 22 May 2020

Application63/042,548Us provisional application · filed 22 Jun 2020

Application63/059,737Us provisional application · filed 31 Jul 2020

Application17/067,427Continuation · filed 9 Oct 2020

Application17/498,672Continuation

US 11,211,001 B2Related patent

US 2021/0366391 A1Published application

US 2022/0028337 A1This patent

From the US filing history. Foreign family members aren’t listed.

Display device with feedback via serial connections between distributed driver circuits

Life of this patent

Display device with feedback via serial connections between distributed driver circuits

Life of this patent

Abstract

Claims20