公开(公告)号：US11429336B2

公开(公告)日：2022-08-30

申请号：US17442884

申请日：2019-07-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Mario E. Campos ,  Hsing-Hung Hsieh ,  Cheng-Hua Yu

IPC: G06F3/14 ,  G06F9/54 ,  G06F1/16 ,  G09G5/00

Abstract: A portable computing device may comprise an internal central processing unit (CPU), an internal graphics processing unit (GPU), a communications port to communicate with an external computing device, a first electronic display connected to the internal GPU, a second electronic display connected to the internal GPU, a touch input device to receive touch inputs from a user, and a display mode control unit. The control unit may cause the portable computing device to selectively operate in a dual display operational mode, a direct input operational mode, and an indirect input operational mode.

公开(公告)号：US20220100037A1

公开(公告)日：2022-03-31

申请号：US17418991

申请日：2019-03-05

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Super Liao ,  Kuan-Ting Wu ,  Cheng-Hua Yu

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/1335

Abstract: A lighting system may include a light guide to receive light from a light source; and a reflector plate including a frustrum structure formed on the surface of the reflector plate to receive refracted light from the light guide.

公开(公告)号：US10162211B2

公开(公告)日：2018-12-25

申请号：US15748870

申请日：2015-10-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kuan-Ting Wu ,  Wei-Kuang Chu ,  Cheng-Hua Yu

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1343

Abstract: The present subject matter relates to display devices. In an example implementation, a display device comprises a display unit having color pixels and tracks of a black matrix covering spaces between the color pixels. The display device also comprises a display control layer over the display unit. The display control layer has longitudinal channels separated by transparent substrates and overlapping the tracks of the black matrix in one direction. The longitudinal channels comprise a first set of channels filled with undoped bi-stable liquid crystals to control a view angle of a display from the display unit, and a second set of channels filled with doped bi-stable liquid crystals to control absorption of blue/ultraviolet (UV) light from the display unit.

公开(公告)号：US20180224693A1

公开(公告)日：2018-08-09

申请号：US15748870

申请日：2015-10-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kuan-Ting Wu ,  Wei-Kuang Chu ,  Cheng-Hua Yu

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/1333

CPC classification number: G02F1/133512 ,  G02F1/13338 ,  G02F1/133509 ,  G02F1/1343 ,  G02F2201/086 ,  G02F2203/62

Abstract: The present subject matter relates to display devices. In an example implementation, a display device comprises a display unit having color pixels and tracks of a black matrix covering spaces between the color pixels. The display device also comprises a display control layer over the display unit. The display control layer has longitudinal channels separated by transparent substrates and overlapping the tracks of the black matrix in one direction. The longitudinal channels comprise a first set of channels filled with undoped bi-stable liquid crystals to control a view angle of a display from the display unit, and a second set of channels filled with doped bi-stable liquid crystals to control absorption of blue/ultraviolet (UV) light from the display unit.

公开(公告)号：US20220374187A1

公开(公告)日：2022-11-24

申请号：US17882029

申请日：2022-08-05

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Mario E. Campos ,  Hsing-Hung Hsieh ,  Cheng-Hua Yu

IPC: G06F3/14 ,  G06F1/16 ,  G06F9/54 ,  G09G5/00

Abstract: A portable computing device may comprise an internal central processing unit (CPU), an internal graphics processing unit (GPU), a communications port to communicate with an external computing device, a first electronic display connected to the internal GPU, a second electronic display connected to the internal GPU, a touch input device to receive touch inputs from a user, and a display mode control unit. The control unit may cause the portable computing device to selectively operate in a dual display operational mode, a direct input operational mode, and an indirect input operational mode.

公开(公告)号：US20210375174A1

公开(公告)日：2021-12-02

申请号：US16650006

申请日：2017-12-14

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Hsing-Hung Hsieh ,  Cheng-Hua Yu ,  Mario E. Campos

IPC: G09G3/20

Abstract: In one example, a display device can include a gate line break across a plurality of gate lines, a first source driver positioned on a first side of the gate line break, a first gate driver positioned on the first side of the gate line break, a second source driver positioned on a second side of the gate line break, and a second gate driver positioned on the second side of the gate line break.

公开(公告)号：US20210312875A1

公开(公告)日：2021-10-07

申请号：US17042158

申请日：2018-11-27

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Hsing-Hung Hsieh ,  Cheng-Hua Yu ,  Ann Alejandro Villegas

IPC: G09G3/34 ,  G02F1/13357

Abstract: A controller to control the light intensity of a first light source and a second light source based on a video signal of a video to be displayed on the display, the decay curve, and usage data regarding the first light source and second light source.

公开(公告)号：US20210035481A1

公开(公告)日：2021-02-04

申请号：US16980500

申请日：2018-04-24

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Lee Atkinson ,  Cheng-Hua Yu

IPC: G09G3/20 ,  G06F3/01 ,  G06F3/0488 ,  G02B27/01

Abstract: A display device includes pixels, a serial-to-parallel converter (SPC), a row driver, a column driver, and a switch. The pixels are arranged in rows and columns which include a first column and a first row. A first pixel resides at an intersection of the first row and first column. The SPC extracts, from a signal sent by a graphics controller, pixel data and a command. The row driver initiates a refresh of the pixels residing in the first row based on the pixel data. The column driver transmits the pixel data to the first column. During the refresh, the switch allows transmission of the pixel data to the first pixel when the command indicates that the first pixel is to be refreshed and prevents transmission of pixel data to the first pixel when the command indicates that the first pixel is not to be refreshed.

公开(公告)号：US20230064571A1

公开(公告)日：2023-03-02

申请号：US17796727

申请日：2020-01-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Shih-Jen Chang ,  Jyun-Cheng Lin ,  Cheng-Hua Yu ,  Hogan Hote Yeh

IPC: G06F3/0354

Abstract: Examples of nibs for styluses are described. In an example, the nib is made of a base material (for example, a polyamide or a polycarbonate), a conductive material (for example, carbon fiber), and a grey color controlling material (for example, a white powder). The base material is in a range of 70 weight percentage (wt %) to 75 wt %. The conductive material is in a range of 15 wt % to 20 wt %. The grey color controlling material in a range of 5 wt % to 10 wt %.

公开(公告)号：US11373570B2

公开(公告)日：2022-06-28

申请号：US16650006

申请日：2017-12-14

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Hsing-Hung Hsieh ,  Cheng-Hua Yu ,  Mario E. Campos

IPC: G09G3/20

Abstract: In one example, a display device can include a gate line break across a plurality of gate lines, a first source driver positioned on a first side of the gate line break, a first gate driver positioned on the first side of the gate line break, a second source driver positioned on a second side of the gate line break, and a second gate driver positioned on the second side of the gate line break.