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公开(公告)号:US20250022407A1
公开(公告)日:2025-01-16
申请号:US18742756
申请日:2024-06-13
Applicant: Apple Inc.
Inventor: Majid Gharghi , Tore Nauta , Saif Choudhary , Chuang Qian , Hopil Bae , Mahdi Farrokh Baroughi , Xia Li , Patrick B Bennett , Ze Yuan
IPC: G09G3/32
Abstract: A pulse width modulation and amplitude modulation driving system for a display panel, including related circuits and methods of operation, are described. In an embodiment, a display panel includes a thin film transistor layer comprising a plurality of subpixel circuits. Each subpixel circuit may include a drive transistor, a comparator, and a switch. A plurality of light emitting diodes (LEDs), such as micro-LEDs, may be connected to the plurality of subpixel circuits. Each subpixel circuit can control an LED based on a current amplitude controlled by the drive transistor and a current pulse width controlled by the comparator and the switch. Other aspects are also described and claimed.
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公开(公告)号:US11645976B2
公开(公告)日:2023-05-09
申请号:US17648074
申请日:2022-01-14
Applicant: Apple Inc.
Inventor: Derek K. Shaeffer , Mahdi Farrokh Baroughi , Xiaofeng Wang , Sam S. Li , John T. Wetherell , Henry C. Jen , Xiang Lu , Hasan Akyol , Hopil Bae , Xiang Fang , Hjalmar Edzer Ayco Huitema , Tore Nauta
IPC: G09G3/3216 , H01L27/32 , G09G3/20 , H05B45/20
CPC classification number: G09G3/3216 , G09G3/2003 , H01L27/3281 , H05B45/20 , G09G2310/0243 , G09G2310/0264
Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.
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公开(公告)号:US20230091644A1
公开(公告)日:2023-03-23
申请号:US17853261
申请日:2022-06-29
Applicant: Apple Inc.
Inventor: Thomas Charisoulis , Saif Choudhary , Xia Li , Tore Nauta
IPC: G09G3/20 , G09G3/3233
Abstract: A display system of a display includes a first light emitting diode, a second light emitting diode, a current source, and at least one transistor. The first and the second light emitting diodes emit light. The current source provides a constant current to the first light emitting diode and the second light emitting diode. Moreover, the at least one transistor removes the current or shunts the current towards the first light emitting diode, the second light emitting diode, or both. Removing the current or shunting the current towards the first light emitting diode, the second light emitting diode, or both, may blend outputs of the first light emitting diode and the second light emitting diode.
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公开(公告)号:US11568787B2
公开(公告)日:2023-01-31
申请号:US17465056
申请日:2021-09-02
Applicant: Apple Inc.
Inventor: Kapil V. Sakariya , Tore Nauta , Hopil Bae , Henry C. Jen
Abstract: Methods and apparatuses relating to controlling an emission of a display panel. In one embodiment, a display driver hardware circuit includes row selection logic to select a number of rows in an emission group of a display panel, wherein the number of rows is adjustable from a single row to a full panel of the display panel, column selection logic to select a number of columns in the emission group of the display panel, wherein the number of columns is adjustable from a single column to the full panel of the display panel, and emission logic to select a number of pulses per data frame to be displayed, wherein the number of pulses per data frame is adjustable from one to a plurality and a pulse length is adjustable from a continuous duty cycle to a non-continuous duty cycle.
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公开(公告)号:US11138918B2
公开(公告)日:2021-10-05
申请号:US17088903
申请日:2020-11-04
Applicant: Apple Inc.
Inventor: Kapil V. Sakariya , Tore Nauta , Hopil Bae , Henry C. Jen
Abstract: Methods and apparatuses relating to controlling an emission of a display panel. In one embodiment, a display driver hardware circuit includes row selection logic to select a number of rows in an emission group of a display panel, wherein the number of rows is adjustable from a single row to a full panel of the display panel, column selection logic to select a number of columns in the emission group of the display panel, wherein the number of columns is adjustable from a single column to the full panel of the display panel, and emission logic to select a number of pulses per data frame to be displayed, wherein the number of pulses per data frame is adjustable from one to a plurality and a pulse length is adjustable from a continuous duty cycle to a non-continuous duty cycle.
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公开(公告)号:US10395594B1
公开(公告)日:2019-08-27
申请号:US15247661
申请日:2016-08-25
Applicant: Apple Inc.
Inventor: Thomas Charisoulis , Tore Nauta , Kapil Sakariya , Jean-Jacques P. Drolet
IPC: G09G3/3241 , G09G3/20 , G09G3/3275 , G09G3/3258 , H01L29/786 , H01L27/12 , H01L27/32 , H01L25/16
Abstract: Methods, systems, and apparatuses for controlling an emission of the light emitting devices are described herein. The light emitting devices may be light emitting diode (LED) devices including μLED devices or organic LED (OLED) devices. Emission control of the LED may be performed using a micro-scale driving circuit (e.g., μDriver) containing drive transistors for constant current driving of the light emitting devices. One embodiment provides for a display driver hardware circuit including emission logic, the emission logic including comparator logic to compare a data voltage from a storage capacitor to a voltage ramp provided via the TFT backplane, the comparator logic to cause the emission logic to generate an emission pulse to an LED device, and wherein the integrated circuit is to switch and drive a plurality of LED devices. In one embodiment each of the plurality of LED devices is a subpixel for a display device.
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公开(公告)号:US12159574B2
公开(公告)日:2024-12-03
申请号:US18295619
申请日:2023-04-04
Applicant: Apple Inc.
Inventor: Derek K. Shaeffer , Mahdi Farrokh Baroughi , Xiaofeng Wang , Sam S. Li , John T. Wetherell , Henry C. Jen , Xiang Lu , Hasan Akyol , Hopil Bae , Xiang Fang , Hjalmar Edzer Ayco Huitema , Tore Nauta
IPC: G09G3/3216 , G09G3/20 , H05B45/20 , H10K59/17
Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.
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公开(公告)号:US20230178526A1
公开(公告)日:2023-06-08
申请号:US17997509
申请日:2021-05-03
Applicant: Apple Inc.
Inventor: Xia Li , Tore Nauta , Gilbert Huppert , Dongwoo Shin , Hjalmar Edzer Ayco Huitema , Ruize Xu , Wei Lin , Nathan K. Gupta , Kian Kerman , Elmar Gehlen , Jin Yan , Se Hyun Ahn , Young Cheol Yang , Arnoldus Alvin Barlian , Ran He , Francois R. Jacob , Brent J. Bollman , Wei-Liang Hsu , Di Liu , Jonathan P. Mar
IPC: H01L25/075 , G02B5/30 , H01L27/15
CPC classification number: H01L25/0753 , G02B5/3033 , H01L27/153
Abstract: Display structures and methods of manufacture of display structure including a display panel with a curved three-dimensional film contour are described. In an embodiment, a display panel includes display area with a main body area and a plurality of petals extending from the main body area. The petals are folded into a curved three-dimensional (3D) film contour, and are separated by corresponding trenches between petals. The trenches may be filled with various seam hiding materials to visually obscure the trenches.
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公开(公告)号:US20230086380A1
公开(公告)日:2023-03-23
申请号:US17887148
申请日:2022-08-12
Applicant: Apple Inc.
Inventor: Thomas Charisoulis , Saif Choudhary , Xia Li , Tore Nauta , Kapil V Sakariya
Abstract: A display system of a display includes multiple primary light emitting diodes and multiple secondary light emitting diodes. The multiple primary light emitting diodes may emit light, in which at least a first primary light emitting diode of the multiple primary light emitting diodes is shorted. Moreover, the multiple secondary light emitting diodes may emit light. At least a first secondary light emitting diode of the multiple secondary light emitting diodes is associated with the first primary light emitting diode, and the first secondary light emitting diode may emit light based at least in part on the first primary light emitting diode being shorted.
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公开(公告)号:US11568789B2
公开(公告)日:2023-01-31
申请号:US17338475
申请日:2021-06-03
Applicant: Apple Inc.
Inventor: Kapil V. Sakariya , Tore Nauta , Hopil Bae , Henry C. Jen , James E. Pedder , Sunggu Kang , Shingo Hatanaka , Xiang Lu , Mahdi Farrokh Baroughi , Hasan Akyol , Saif Choudhary , Ion Bita
Abstract: 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.
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