公开(公告)号：US20250078731A1

公开(公告)日：2025-03-06

申请号：US18618916

申请日：2024-03-27

Applicant: Apple Inc.

Inventor： Baris Posat ,  Rajesh Velayuthan ,  Hooman Torabi Parizi ,  Young Don Bae ,  Hasan Akyol

IPC: G09G3/32

Abstract: In an embodiment, an electronic display may include an electronic display panel that includes a plurality of display pixels configured to emit light; a first pre-charge voltage source; and a second pre-charge voltage source; and a microdriver that may include: a capacitor coupled at a first terminal to the first pre-charge voltage source and coupled at a second terminal to the second pre-charge voltage source; and a buffer. The buffer may include a positive input terminal coupled to the first pre-charge voltage source and the capacitor; an output terminal coupled to a plurality of driving circuits; and a negative input terminal coupled to the output terminal.

公开(公告)号：US20250095605A1

公开(公告)日：2025-03-20

申请号：US18625158

申请日：2024-04-02

Applicant: Apple Inc.

Inventor： Baris Posat ,  John T. Wetherell ,  Hasan Akyol ,  Mahdi Farrokh Baroughi ,  Hopil Bae

IPC: G09G5/00

Abstract: Electronic displays may display a frame of image content by controlling emissions of display pixels. To this end, the electronic display may include one or more column drivers that drive the display pixels to emit light. The column drivers may be collectively compensated by common components, such as a single sampling capacitor and/or an analog buffer, which may reduce a size of the column drivers. In another example, the column drivers may include cascode transistors with increased width-to-length ratio and share a common n-well. Each transistor may be compensated by a respective capacitor, however a size of each sampling capacitor may be reduced, thereby reducing a size of the column driver. Moreover, a size of a level shifter may be reduced by operating transistors of the level shifter with sub-threshold voltage. Furthermore, a resolution of the electronic display may be improved by extending a pulse of an emission clock signal.

公开(公告)号：US20240105525A1

公开(公告)日：2024-03-28

申请号：US18358559

申请日：2023-07-25

Applicant: Apple Inc.

Inventor： Imran Hashim ,  Xiang Lu ,  Stanley B. Wang ,  Xuchun Liu ,  Mahdi Farrokh Baroughi ,  Yongjie Jiang ,  Hopil Bae ,  Hasan Akyol ,  Baris Posat ,  John T. Wetherell ,  Lei Wu

IPC: G09G3/32 ,  H01L25/075 ,  H01L33/62

CPC classification number: G09G3/32 ,  H01L25/0753 ,  H01L33/62 ,  H01L2933/0066

Abstract: Test structures and methods of testing pixel driver chip donor wafers are described. In an embodiment, a redistribution layer is formed over a pixel driver chip donor wafer and probed to determine known good dies, followed by removal of the RDL. In other embodiments, test routing is formed in the pixel driver chip using a polycide material or doped region in the semiconductor wafer.

公开(公告)号：US20240105089A1

公开(公告)日：2024-03-28

申请号：US18470290

申请日：2023-09-19

Applicant: Apple Inc.

Inventor： William Matthew Pender Paul ,  Mario Martinis ,  Jiayi Jin ,  Yongjie Jiang ,  Baris Posat ,  Mojtaba Fallahpour ,  Haitao Li ,  James G. Horiuchi ,  Giovanni Azzellino ,  Weijun Yao ,  Stanley B. Wang ,  Mahdi Farrokh Baroughi

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2330/021

Abstract: Electronic displays and electronic devices including such electronic displays and antennas are provided for improved transmission of signals through circuitry of the electronic display. The electronic display may include multiple power supply tiles that are separated with non-conductive gaps to reduce circulation of eddy currents induced by the transmission signals. Moreover, voltage supply routing paths within the power supply tiles may be grouped to provide non-conductive gaps within the power supply tiles. Accordingly, the antenna may provide the transmission signals through the electronic display with improved efficiency based on reducing surface currents (e.g., eddy currents) on the electronic display.

公开(公告)号：US20250095548A1

公开(公告)日：2025-03-20

申请号：US18625162

申请日：2024-04-02

Applicant: Apple Inc.

Inventor： Baris Posat ,  John T Wetherell ,  Hasan Akyol ,  Mahdi Farrokh Baroughi

IPC: G09G3/32 ,  G09G3/20

Abstract: Electronic displays may display a frame of image content by controlling emissions of display pixels. To this end, the electronic display may include one or more column drivers that drive the display pixels to emit light. The column drivers may be collectively compensated by common components, such as a single sampling capacitor and/or an analog buffer, which may reduce a size of the column drivers. In another example, the column drivers may include cascode transistors with increased width-to-length ratio and share a common n-well. Each transistor may be compensated by a respective capacitor, however a size of each sampling capacitor may be reduced, thereby reducing a size of the column driver. Moreover, a size of a level shifter may be reduced by operating transistors of the level shifter with sub-threshold voltage. Furthermore, a resolution of the electronic display may be improved by extending a pulse of an emission clock signal.