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US 10,854,129 B2Granted
Hybrid architecture for zero border display
AssigneeApple Inc.
InventorsXiang Lu, Mahdi Farrokh Baroughi, Xiaofeng Wang, Derek K. Shaeffer, Henry C. Jen, Hopil Bae
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Abstract
Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.
Claims18
A display panel comprising:
- a bus column of global signal lines;
- a plurality of rows of row function signal lines;
- and
- a plurality of rows of pixel driver chips, each row of pixel driver chips connected to a corresponding row of row function signal lines, each pixel driver chip connected to a corresponding matrix of light emitting diodes (LEDs), and each row of pixel driver chips comprising:
- a group of backbone hybrid pixel driver chips;
- and
- a group of LED driving pixel driver chips;
- wherein the bus column of global signal lines is coupled to the group of backbone hybrid pixel driver chips for each row of pixel driver chips and each separate backbone hybrid pixel driver chip includes an input connected to a corresponding global signal line and an output connected to a corresponding row function signal line within a corresponding row of row function signal lines to transmit a corresponding manipulated signal to the corresponding row of pixel driver chips.
5 more elements
A hybrid pixel driver chip comprising:
- vertical selection token (VST) inputs;
- VST clock inputs;
- a VST driver circuitry coupled to the VST inputs and the VST clock inputs, the VST driver circuitry further including a token output and a token latch output;
- a signal modulator circuitry coupled to the token output and the token latch output, the signal modulator circuitry further including a plurality of multiplexers coupled to a plurality of global signal inputs, and a plurality of internal signal outputs from the plurality of multiplexers;
- a multiplexer driver circuitry including a multiplexer coupled with the plurality of internal signal outputs, and a multiplexer output;
- and
- an LED driving circuitry coupled with a data input and one or more of the plurality of internal signal outputs, the LED driving circuitry additionally including a plurality of output drivers.
4 more elements
A method of programming a display comprising:
- propagating vertical selection token (VST) signals to a row of pixel driver chips, wherein each pixel driver chip within the row of pixel driver chips is connected to a corresponding matrix of light emitting diodes (LEDs), and the row of pixel driver chips includes a backbone hybrid pixel driver chip and a group of LED driving pixel driver chips;
- receiving token driver configuration data with the backbone hybrid pixel driver chip;
- receiving a global configuration update pulse with the backbone hybrid pixel driver chip;
- receiving row driver configuration data with the token activated backbone hybrid pixel driver chip;
- and
- transmitting a manipulated configuration update signal from the backbone hybrid pixel driver chip to the row of pixel driver chips.
3 more elements
Dependencies are inferred from the claim text.