公开(公告)号：US09940873B2

公开(公告)日：2018-04-10

申请号：US14535604

申请日：2014-11-07

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Chin-Wei Lin ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Young Bae Park

IPC: G09G5/10 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/3266 ,  G11C19/18 ,  G11C19/28 ,  G09G3/20 ,  H03K5/15

CPC classification number: G09G3/3233 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/2081 ,  G09G3/3225 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/028 ,  G09G2360/16 ,  G11C19/184 ,  G11C19/28 ,  H03K5/15093

Abstract: An organic light-emitting diode display may have an array of pixel circuits. Each pixel circuit may contain an organic light-emitting diode that emits light, a drive transistor that controls current flow through the diode, and additional transistors such as switching transistors for loading data into the pixel circuit and emission transistors for enabling and disabling current flow through the drive transistor and diode. Gate driver circuitry may produce emission control signals that control the emission transistors. Display driver circuitry may generate a start signal with a digitally controlled pulse width. The start signal may be applied to shift register circuitry in the gate driver circuitry. The pulse width of the start signal may be adjusted to adjust the luminance of the display.

公开(公告)号：US20180075808A1

公开(公告)日：2018-03-15

申请号：US15384096

申请日：2016-12-19

Applicant: Apple Inc.

Inventor： Keitaro Yamashita ,  Abbas Jamshidi Roudbari ,  Shin-Hung Yeh ,  Tsung-Ting Tsai ,  Shih-Chang Chang ,  Ting-Kuo Chang ,  Ki Yeol Byun ,  Warren S. Rieutort-Louis

IPC: G09G3/3266

CPC classification number: G09G3/3266 ,  G09G2300/0413 ,  G09G2310/0205 ,  G09G2310/0213 ,  G09G2310/0221 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2310/04 ,  G09G2340/0414 ,  G09G2340/0435

Abstract: An electronic device may include a display such as a light-emitting diode display. The electronic device may be a head-mounted device that provides a virtual reality or augmented reality environment to a user. To reduce artifacts in the display, a display may be operable in both a normal scanning mode and a partial scanning mode. In the normal scanning mode, every row of the display may be enabled to emit light in each frame. In the partial scanning mode, only a subset of the rows of the display may be enabled to emit light in each frame. The display may have a higher refresh rate in the partial scanning mode than in the normal scanning mode. To ensure uniform transistor stress across the display, the scanning driver for the display may scan the disabled rows in the partial scanning mode even though the rows will not be used to emit light.

公开(公告)号：US09799713B2

公开(公告)日：2017-10-24

申请号：US15168601

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Jae Won Choi ,  Shih Chang Chang ,  Young Bae Park ,  ZhiFeng Zhan ,  Chieh-Wei Chen ,  Tsung-Ting Tsai ,  Chin-Wei Lin ,  Paul S. Drzaic

IPC: H01L27/32 ,  H01L51/52 ,  H01L27/12

CPC classification number: H01L27/3258 ,  H01L27/1248 ,  H01L27/3246 ,  H01L51/5253

Abstract: A display may have an array of pixels formed from organic light-emitting diodes and thin-film transistor circuitry. A planarization layer may be interposed between the thin-film transistor circuitry and the organic light-emitting diodes. To protect the organic light-emitting diodes from photoactive compounds that may be outgassed from the planarization layer, an inorganic barrier layer may be interposed between the planarization layer and the organic light-emitting diodes. The inorganic barrier layer may be formed on top of and/or below a pixel definition layer that defines light-emitting zones for the organic light-emitting diodes. In another suitable arrangement, the inorganic barrier layer may itself define light-emitting zones and may be used in place of a polymer-based pixel definition layer. The inorganic barrier layer may include trenches in which the emissive material of the light-emitting diodes is formed.

公开(公告)号：US20170025489A1

公开(公告)日：2017-01-26

申请号：US15168601

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Jae Won Choi ,  Shih Chang Chang ,  Young Bae Park ,  ZhiFeng Zhan ,  Chieh-Wei Chen ,  Tsung-Ting Tsai ,  Chin-Wei Lin ,  Paul S. Drzaic

IPC: H01L27/32 ,  H01L51/52

CPC classification number: H01L27/3258 ,  H01L27/1248 ,  H01L27/3246 ,  H01L51/5253

Abstract: A display may have an array of pixels formed from organic light-emitting diodes and thin-film transistor circuitry. A planarization layer may be interposed between the thin-film transistor circuitry and the organic light-emitting diodes. To protect the organic light-emitting diodes from photoactive compounds that may be outgassed from the planarization layer, an inorganic barrier layer may be interposed between the planarization layer and the organic light-emitting diodes. The inorganic barrier layer may be formed on top of and/or below a pixel definition layer that defines light-emitting zones for the organic light-emitting diodes. In another suitable arrangement, the inorganic barrier layer may itself define light-emitting zones and may be used in place of a polymer-based pixel definition layer. The inorganic barrier layer may include trenches in which the emissive material of the light-emitting diodes is formed.

Abstract translation: 显示器可以具有由有机发光二极管和薄膜晶体管电路形成的像素阵列。 平坦化层可以介于薄膜晶体管电路和有机发光二极管之间。 为了保护有机发光二极管免受可能从平坦化层脱气的光活性化合物，可以在平坦化层和有机发光二极管之间插入无机阻挡层。 无机阻挡层可以形成在限定有机发光二极管的发光区域的像素限定层的顶部和/或下方。 在另一合适的布置中，无机阻挡层本身可以限定发光区域，并且可以用来代替基于聚合物的像素限定层。 无机阻挡层可以包括其中形成发光二极管的发光材料的沟槽。

公开(公告)号：US20160275845A1

公开(公告)日：2016-09-22

申请号：US14687081

申请日：2015-04-15

Applicant: Apple Inc.

Inventor： Tsung-Ting Tsai ,  Chin-Wei Lin ,  Shih Chang Chang

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2018 ,  G09G3/2003 ,  G09G3/2014 ,  G09G3/2081 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0626 ,  G09G2320/064 ,  G09G2320/0666

Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may load data into the pixels via data lines that extend along the columns. The display driver circuitry may include gate driver circuitry that supplies horizontal control signals to rows of the pixels. The horizontal control signals may include emission enable signals for controlling emission enable transistors and scan signals for controlling switching transistors. During an emission phase of operation for the display, the emission enable signal may be pulse-width modulated by the emission control gate driver circuits in the gate driver circuitry to control the output of the light-emitting diodes. The emission control gate driver circuits may be controlled using an emission start signal and a pair of two-phase clocks.

Abstract translation: 显示器可以具有排列成行和列的像素阵列。 显示驱动器电路可以通过沿列延伸的数据线将数据加载到像素中。 显示驱动器电路可以包括将水平控制信号提供给像素行的栅极驱动器电路。 水平控制信号可以包括用于控制发射使能晶体管的发射使能信号和用于控制开关晶体管的扫描信号。 在显示器的操作的发光阶段期间，发光使能信号可以由栅极驱动器电路中的发光控制栅极驱动电路进行脉冲宽度调制，以控制发光二极管的输出。 可以使用发射开始信号和一对两相时钟来控制发射控制栅极驱动器电路。

公开(公告)号：US20150145849A1

公开(公告)日：2015-05-28

申请号：US14444581

申请日：2014-07-28

Applicant: Apple Inc.

Inventor： Jae Won Choi ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Vasudha Gupta ,  Young Bae Park

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/045

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensation and programming operations. Each display pixel may have five p-type transistor and two capacitors. One of the five p-type transistors may serve as the drive transistor and may be compensated using the remaining four of the p-type transistors and the two capacitors. A first of the capacitors may be coupled between the gate and source of the drive transistor. A second of the capacitors may have a terminal coupled to the source. Alternatively, each display pixel may have six p-type transistors and a single capacitor. The six p-type transistors may include a drive transistor having a gate coupled to the capacitor.

Abstract translation: 显示器可以具有有机发光二极管显示像素阵列。 每个显示像素可以具有在驱动晶体管的控制下发光的发光二极管。 每个显示像素还可以具有用于补偿和编程操作的控制晶体管。 每个显示像素可以具有五个p型晶体管和两个电容器。 五个p型晶体管中的一个可以用作驱动晶体管，并且可以使用剩余的四个p型晶体管和两个电容器进行补偿。 电容器中的第一个可以耦合在驱动晶体管的栅极和源极之间。 电容器中的第二个可以具有耦合到源极的端子。 或者，每个显示像素可以具有六个p型晶体管和单个电容器。 六个p型晶体管可以包括具有耦合到电容器的栅极的驱动晶体管。

公开(公告)号：US12288522B1

公开(公告)日：2025-04-29

申请号：US18350621

申请日：2023-07-11

Applicant: Apple Inc.

Inventor： Shyuan Yang ,  Salman Kabir ,  Ricardo A Peterson ,  Warren S Rieutort-Louis ,  Ting-Kuo Chang ,  Qing Li ,  Yuchi Che ,  Tsung-Ting Tsai ,  Feng Wen ,  Abbas Jamshidi Roudbari ,  Kyounghwan Kim ,  Graeme M Williams ,  Kingsuk Brahma ,  Yue Jack Chu ,  Junbo Wu ,  Chieh-Wei Chen ,  Bo-Ren Wang ,  Injae Hwang ,  Wenbing Hu

IPC: G09G3/3258

Abstract: An electronic device includes a display and a sensor underneath the display. The display has a full pixel density region and a reduced pixel density region. Compared to pixels in the full pixel density region, pixels in the reduced pixel density region can be controlled using overdriven power supply voltages, overdriven scan control signals, different initialization and reset voltages, and can include capacitors and transistors with different physical and electrical characteristics. Gate drivers provide scan signals to pixels in the full pixel density region, whereas overdrive buffers provide overdrive scan signals to pixels in the reduced pixel density region. The pixels in the full pixel density region and the pixels in the reduced pixel density region can be controlled using different black level or gamma settings for each color channel and can be adjusted physically to match luminance, color, as well as to mitigate differences in temperature and aging impact.

公开(公告)号：US12207512B2

公开(公告)日：2025-01-21

申请号：US18513132

申请日：2023-11-17

Applicant: Apple Inc.

Inventor： Cheng-Ho Yu ,  Chin-Wei Lin ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shih-Chang Chang ,  Yu Cheng Chen ,  John Z. Zhong

IPC: H10K59/131 ,  G06F3/044 ,  G09G3/3233 ,  G09G3/3266 ,  H10K59/10 ,  H10K59/40 ,  H10K59/88

Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.

公开(公告)号：US12019835B2

公开(公告)日：2024-06-25

申请号：US17807059

申请日：2022-06-15

Applicant: Apple Inc.

Inventor： Tiffany Tang Moy ,  Tsung-Ting Tsai ,  Warren S. A. Rieutort-Louis ,  Aleksandr N. Polyakov ,  Chuang Qian ,  Sabino Joseph Pietrangelo, II ,  Abbas Jamshidi-Roudbari ,  Rui Liu ,  Yurii Morozov

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0445 ,  G06F2203/04112

Abstract: Visibility of the metal mesh touch electrodes can be mitigated using one or more mitigation techniques. In some examples, the boundary between touch electrodes and/or the boundary between a touch electrode and a routing trace of another touch electrode and/or the boundary between two routing traces can be non-linear. In some examples, dummy cuts can be made within an area of a touch electrode region (e.g., while maintaining the same electrical potential for the touch electrode region). In some examples, notches can be made in the metal mesh. In some examples, the location of cuts and/or notches can be optimized to mitigate visibility of the metal mesh. In some examples, some or all of the visibility mitigations may be used in combination in a touch screen.

公开(公告)号：US20240128274A1

公开(公告)日：2024-04-18

申请号：US18533741

申请日：2023-12-08

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Jae Won Choi ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Young Bae Park

IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1368 ,  H10K59/121 ,  H10K59/126

CPC classification number: H01L27/1225 ,  G02F1/13624 ,  G02F1/1368 ,  H01L27/1222 ,  H01L27/1251 ,  H01L27/1255 ,  H10K59/1213 ,  H10K59/126 ,  G02F1/13454

Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.